From a0dd6773038f3fd2bd1b4f7ec193887cffc49046 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 23 Nov 2017 11:10:47 +0000 Subject: phy: tegra: remove redundant self assignment of 'map' The assignment of map to itself is redundant and can be removed. Detected with Coccinelle. Signed-off-by: Colin Ian King Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/tegra/xusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index 63e916d4d069..11aa5902a9ac 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -418,7 +418,7 @@ tegra_xusb_port_find_lane(struct tegra_xusb_port *port, { struct tegra_xusb_lane *lane, *match = ERR_PTR(-ENODEV); - for (map = map; map->type; map++) { + for (; map->type; map++) { if (port->index != map->port) continue; -- cgit v1.2.1 From f3d96f8d23d8e6d0b7642ee946b9b2ac3418fb4d Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Wed, 3 Jan 2018 16:49:44 +0800 Subject: phy: sun4i-usb: add support for R40 USB PHY Allwinner R40 features a USB PHY like the one in A64, but with 3 PHYs. Add support for it. Signed-off-by: Icenowy Zheng Acked-by: Maxime Ripard Acked-by: Rob Herring Tested-by: Hermann Lauer Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt | 1 + drivers/phy/allwinner/phy-sun4i-usb.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt index c1ce5a0a652e..07ca4ec4a745 100644 --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt @@ -11,6 +11,7 @@ Required properties: * allwinner,sun8i-a33-usb-phy * allwinner,sun8i-a83t-usb-phy * allwinner,sun8i-h3-usb-phy + * allwinner,sun8i-r40-usb-phy * allwinner,sun8i-v3s-usb-phy * allwinner,sun50i-a64-usb-phy - reg : a list of offset + length pairs diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index aa857be692cf..bee798892b21 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -112,6 +112,7 @@ enum sun4i_usb_phy_type { sun8i_a33_phy, sun8i_a83t_phy, sun8i_h3_phy, + sun8i_r40_phy, sun8i_v3s_phy, sun50i_a64_phy, }; @@ -919,6 +920,16 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = { .phy0_dual_route = true, }; +static const struct sun4i_usb_phy_cfg sun8i_r40_cfg = { + .num_phys = 3, + .type = sun8i_r40_phy, + .disc_thresh = 3, + .phyctl_offset = REG_PHYCTL_A33, + .dedicated_clocks = true, + .enable_pmu_unk1 = true, + .phy0_dual_route = true, +}; + static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = { .num_phys = 1, .type = sun8i_v3s_phy, @@ -948,6 +959,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = { { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg }, { .compatible = "allwinner,sun8i-a83t-usb-phy", .data = &sun8i_a83t_cfg }, { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg }, + { .compatible = "allwinner,sun8i-r40-usb-phy", .data = &sun8i_r40_cfg }, { .compatible = "allwinner,sun8i-v3s-usb-phy", .data = &sun8i_v3s_cfg }, { .compatible = "allwinner,sun50i-a64-usb-phy", .data = &sun50i_a64_cfg}, -- cgit v1.2.1 From 94ccae556741b3b1e2e526ee41426ed890500cd5 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 24 Jan 2018 13:47:35 +0800 Subject: dt-bindings: hisilicon: add doc for Hi3798CV200 peripheral controller It adds bindings doc for Hi3798CV200 peripheral controller. Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- .../bindings/arm/hisilicon/hisilicon.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt index 7111fbc82a4e..199cd36fe1ba 100644 --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt @@ -74,6 +74,29 @@ Example: reboot-offset = <0x4>; }; +----------------------------------------------------------------------- +Hisilicon Hi3798CV200 Peripheral Controller + +The Hi3798CV200 Peripheral Controller controls peripherals, queries +their status, and configures some functions of peripherals. + +Required properties: +- compatible: Should contain "hisilicon,hi3798cv200-perictrl", "syscon" + and "simple-mfd". +- reg: Register address and size of Peripheral Controller. +- #address-cells: Should be 1. +- #size-cells: Should be 1. + +Examples: + + perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "syscon", + "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + }; + ----------------------------------------------------------------------- Hisilicon Hi6220 system controller -- cgit v1.2.1 From 5669f91a086ca377a5f5b15885d03482435006d6 Mon Sep 17 00:00:00 2001 From: Jianguo Sun Date: Wed, 24 Jan 2018 13:47:36 +0800 Subject: dt-bindings: add bindings doc for hi3798cv200 combphy It adds the device tree bindings for PCIE/SATA/USB3 combo PHY found on HiSilicon STB SoCs. Signed-off-by: Jianguo Sun Signed-off-by: Shawn Guo Acked-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-hi3798cv200-combphy.txt | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt diff --git a/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt b/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt new file mode 100644 index 000000000000..17b0c761370a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt @@ -0,0 +1,59 @@ +HiSilicon STB PCIE/SATA/USB3 PHY + +Required properties: +- compatible: Should be "hisilicon,hi3798cv200-combphy" +- reg: Should be the address space for COMBPHY configuration and state + registers in peripheral controller, e.g. PERI_COMBPHY0_CFG and + PERI_COMBPHY0_STATE for COMBPHY0 Hi3798CV200 SoC. +- #phy-cells: Should be 1. The cell number is used to select the phy mode + as defined in . +- clocks: The phandle to clock provider and clock specifier pair. +- resets: The phandle to reset controller and reset specifier pair. + +Refer to phy/phy-bindings.txt for the generic PHY binding properties. + +Optional properties: +- hisilicon,fixed-mode: If the phy device doesn't support mode select + but a fixed mode setting, the property should be present to specify + the particular mode. +- hisilicon,mode-select-bits: If the phy device support mode select, + this property should be present to specify the register bits in + peripheral controller, as a 3 integers tuple: + . + +Notes: +- Between hisilicon,fixed-mode and hisilicon,mode-select-bits, one and only + one of them should be present. +- The device node should be a child of peripheral controller that contains + COMBPHY configuration/state and PERI_CTRL register used to select PHY mode. + Refer to arm/hisilicon/hisilicon.txt for the parent peripheral controller + bindings. + +Examples: + +perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "syscon", + "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x8a20000 0x1000>; + + combphy0: phy@850 { + compatible = "hisilicon,hi3798cv200-combphy"; + reg = <0x850 0x8>; + #phy-cells = <1>; + clocks = <&crg HISTB_COMBPHY0_CLK>; + resets = <&crg 0x188 4>; + hisilicon,fixed-mode = ; + }; + + combphy1: phy@858 { + compatible = "hisilicon,hi3798cv200-combphy"; + reg = <0x858 0x8>; + #phy-cells = <1>; + clocks = <&crg HISTB_COMBPHY1_CLK>; + resets = <&crg 0x188 12>; + hisilicon,mode-select-bits = <0x0008 11 (0x3 << 11)>; + }; +}; -- cgit v1.2.1 From d0bffd17a3fc49396518591eae42580530aecd25 Mon Sep 17 00:00:00 2001 From: Jianguo Sun Date: Wed, 24 Jan 2018 13:47:37 +0800 Subject: phy: add combo phy driver for HiSilicon STB SoCs Add combo phy driver for HiSilicon STB SoCs. This phy can be used as pcie-phy, sata-phy or usb-phy. Changes for v5: - Add bindings doc for Hi3798CV200 peripheral controller, and refer to the bindings of this parent node in combphy bindings doc. Changes for v4: - Instead of relying on device id, add a new property hisilicon,fixed-mode for combphy device that doesn't support mode select but a fixed phy mode. - Move combphy mode select register bits definition to device tree, as it may vary from one device to another. Changes for v3: - Make combphy device be child of peripheral controller and use 'reg' property for mapping combphy configuration registers. - Kill "hisilicon,peripheral-syscon" property, since parent node is just the syscon controller now. - Check combphy id to handle the quirk that combphy0 can not configure mode but always works in USB3 mode. - Unify phy .init and .exit hooks for different combphy instances and work modes, as the only quirk we need to handle is that combphy0 can only work in USB3 mode. - Better naming for clock and reset, 'ref' to 'ref_clk', 'por' to 'por_rst'. Changes for v2: - Move DT bindings into a separate patch. - Drop the spurious newline from drivers/phy/Makefile. - Use the phy type defines in dt-bindings/phy/phy.h. - Use PTR_ERR_OR_ZERO() for checking return from devm_of_phy_provider_register(). - Add USB3 phy support. Signed-off-by: Jianguo Sun Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 9 + drivers/phy/hisilicon/Makefile | 1 + drivers/phy/hisilicon/phy-histb-combphy.c | 289 ++++++++++++++++++++++++++++++ 3 files changed, 299 insertions(+) create mode 100644 drivers/phy/hisilicon/phy-histb-combphy.c diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index 6164c4cd0f65..d9afe2b12827 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -11,6 +11,15 @@ config PHY_HI6220_USB To compile this driver as a module, choose M here. +config PHY_HISTB_COMBPHY + tristate "HiSilicon STB SoCs COMBPHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST + select GENERIC_PHY + select MFD_SYSCON + help + Enable this to support the HISILICON STB SoCs COMBPHY. + If unsure, say N. + config PHY_HIX5HD2_SATA tristate "HIX5HD2 SATA PHY Driver" depends on ARCH_HIX5HD2 && OF && HAS_IOMEM diff --git a/drivers/phy/hisilicon/Makefile b/drivers/phy/hisilicon/Makefile index 541b348187a8..5e8e2dfa8c37 100644 --- a/drivers/phy/hisilicon/Makefile +++ b/drivers/phy/hisilicon/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o +obj-$(CONFIG_PHY_HISTB_COMBPHY) += phy-histb-combphy.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o diff --git a/drivers/phy/hisilicon/phy-histb-combphy.c b/drivers/phy/hisilicon/phy-histb-combphy.c new file mode 100644 index 000000000000..5777b3120017 --- /dev/null +++ b/drivers/phy/hisilicon/phy-histb-combphy.c @@ -0,0 +1,289 @@ +/* + * COMBPHY driver for HiSilicon STB SoCs + * + * Copyright (C) 2016-2017 HiSilicon Co., Ltd. http://www.hisilicon.com + * + * Authors: Jianguo Sun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define COMBPHY_MODE_PCIE 0 +#define COMBPHY_MODE_USB3 1 +#define COMBPHY_MODE_SATA 2 + +#define COMBPHY_CFG_REG 0x0 +#define COMBPHY_BYPASS_CODEC BIT(31) +#define COMBPHY_TEST_WRITE BIT(24) +#define COMBPHY_TEST_DATA_SHIFT 20 +#define COMBPHY_TEST_DATA_MASK GENMASK(23, 20) +#define COMBPHY_TEST_ADDR_SHIFT 12 +#define COMBPHY_TEST_ADDR_MASK GENMASK(16, 12) +#define COMBPHY_CLKREF_OUT_OEN BIT(0) + +struct histb_combphy_mode { + int fixed; + int select; + u32 reg; + u32 shift; + u32 mask; +}; + +struct histb_combphy_priv { + void __iomem *mmio; + struct regmap *syscon; + struct reset_control *por_rst; + struct clk *ref_clk; + struct phy *phy; + struct histb_combphy_mode mode; +}; + +static void nano_register_write(struct histb_combphy_priv *priv, + u32 addr, u32 data) +{ + void __iomem *reg = priv->mmio + COMBPHY_CFG_REG; + u32 val; + + /* Set up address and data for the write */ + val = readl(reg); + val &= ~COMBPHY_TEST_ADDR_MASK; + val |= addr << COMBPHY_TEST_ADDR_SHIFT; + val &= ~COMBPHY_TEST_DATA_MASK; + val |= data << COMBPHY_TEST_DATA_SHIFT; + writel(val, reg); + + /* Flip strobe control to trigger the write */ + val &= ~COMBPHY_TEST_WRITE; + writel(val, reg); + val |= COMBPHY_TEST_WRITE; + writel(val, reg); +} + +static int is_mode_fixed(struct histb_combphy_mode *mode) +{ + return (mode->fixed != PHY_NONE) ? true : false; +} + +static int histb_combphy_set_mode(struct histb_combphy_priv *priv) +{ + struct histb_combphy_mode *mode = &priv->mode; + struct regmap *syscon = priv->syscon; + u32 hw_sel; + + if (is_mode_fixed(mode)) + return 0; + + switch (mode->select) { + case PHY_TYPE_SATA: + hw_sel = COMBPHY_MODE_SATA; + break; + case PHY_TYPE_PCIE: + hw_sel = COMBPHY_MODE_PCIE; + break; + case PHY_TYPE_USB3: + hw_sel = COMBPHY_MODE_USB3; + break; + default: + return -EINVAL; + } + + return regmap_update_bits(syscon, mode->reg, mode->mask, + hw_sel << mode->shift); +} + +static int histb_combphy_init(struct phy *phy) +{ + struct histb_combphy_priv *priv = phy_get_drvdata(phy); + u32 val; + int ret; + + ret = histb_combphy_set_mode(priv); + if (ret) + return ret; + + /* Clear bypass bit to enable encoding/decoding */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val &= ~COMBPHY_BYPASS_CODEC; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + ret = clk_prepare_enable(priv->ref_clk); + if (ret) + return ret; + + reset_control_deassert(priv->por_rst); + + /* Enable EP clock */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val |= COMBPHY_CLKREF_OUT_OEN; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + /* Need to wait for EP clock stable */ + mdelay(5); + + /* Configure nano phy registers as suggested by vendor */ + nano_register_write(priv, 0x1, 0x8); + nano_register_write(priv, 0xc, 0x9); + nano_register_write(priv, 0x1a, 0x4); + + return 0; +} + +static int histb_combphy_exit(struct phy *phy) +{ + struct histb_combphy_priv *priv = phy_get_drvdata(phy); + u32 val; + + /* Disable EP clock */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val &= ~COMBPHY_CLKREF_OUT_OEN; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + reset_control_assert(priv->por_rst); + clk_disable_unprepare(priv->ref_clk); + + return 0; +} + +static const struct phy_ops histb_combphy_ops = { + .init = histb_combphy_init, + .exit = histb_combphy_exit, + .owner = THIS_MODULE, +}; + +static struct phy *histb_combphy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct histb_combphy_priv *priv = dev_get_drvdata(dev); + struct histb_combphy_mode *mode = &priv->mode; + + if (args->args_count < 1) { + dev_err(dev, "invalid number of arguments\n"); + return ERR_PTR(-EINVAL); + } + + mode->select = args->args[0]; + + if (mode->select < PHY_TYPE_SATA || mode->select > PHY_TYPE_USB3) { + dev_err(dev, "invalid phy mode select argument\n"); + return ERR_PTR(-EINVAL); + } + + if (is_mode_fixed(mode) && mode->select != mode->fixed) { + dev_err(dev, "mode select %d mismatch fixed phy mode %d\n", + mode->select, mode->fixed); + return ERR_PTR(-EINVAL); + } + + return priv->phy; +} + +static int histb_combphy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct histb_combphy_priv *priv; + struct device_node *np = dev->of_node; + struct histb_combphy_mode *mode; + struct resource *res; + u32 vals[3]; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->mmio = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->mmio)) { + ret = PTR_ERR(priv->mmio); + return ret; + } + + priv->syscon = syscon_node_to_regmap(np->parent); + if (IS_ERR(priv->syscon)) { + dev_err(dev, "failed to find peri_ctrl syscon regmap\n"); + return PTR_ERR(priv->syscon); + } + + mode = &priv->mode; + mode->fixed = PHY_NONE; + + ret = of_property_read_u32(np, "hisilicon,fixed-mode", &mode->fixed); + if (ret == 0) + dev_dbg(dev, "found fixed phy mode %d\n", mode->fixed); + + ret = of_property_read_u32_array(np, "hisilicon,mode-select-bits", + vals, ARRAY_SIZE(vals)); + if (ret == 0) { + if (is_mode_fixed(mode)) { + dev_err(dev, "found select bits for fixed mode phy\n"); + return -EINVAL; + } + + mode->reg = vals[0]; + mode->shift = vals[1]; + mode->mask = vals[2]; + dev_dbg(dev, "found mode select bits\n"); + } else { + if (!is_mode_fixed(mode)) { + dev_err(dev, "no valid select bits found for non-fixed phy\n"); + return -ENODEV; + } + } + + priv->ref_clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->ref_clk)) { + dev_err(dev, "failed to find ref clock\n"); + return PTR_ERR(priv->ref_clk); + } + + priv->por_rst = devm_reset_control_get(dev, NULL); + if (IS_ERR(priv->por_rst)) { + dev_err(dev, "failed to get poweron reset\n"); + return PTR_ERR(priv->por_rst); + } + + priv->phy = devm_phy_create(dev, NULL, &histb_combphy_ops); + if (IS_ERR(priv->phy)) { + dev_err(dev, "failed to create combphy\n"); + return PTR_ERR(priv->phy); + } + + dev_set_drvdata(dev, priv); + phy_set_drvdata(priv->phy, priv); + + phy_provider = devm_of_phy_provider_register(dev, histb_combphy_xlate); + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id histb_combphy_of_match[] = { + { .compatible = "hisilicon,hi3798cv200-combphy" }, + { }, +}; +MODULE_DEVICE_TABLE(of, histb_combphy_of_match); + +static struct platform_driver histb_combphy_driver = { + .probe = histb_combphy_probe, + .driver = { + .name = "combphy", + .of_match_table = histb_combphy_of_match, + }, +}; +module_platform_driver(histb_combphy_driver); + +MODULE_DESCRIPTION("HiSilicon STB COMBPHY driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From 22072e83ebd510fb6a090aef9d65ccfda9b1e7e4 Mon Sep 17 00:00:00 2001 From: Souptick Joarder Date: Wed, 14 Feb 2018 23:18:48 +0530 Subject: usb: host: ehci: Use dma_pool_zalloc() Use dma_pool_zalloc() instead of dma_pool_alloc + memset Signed-off-by: Souptick Joarder Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-mem.c | 3 +-- drivers/usb/host/ehci-sched.c | 6 ++---- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index 21307d862af6..4c6c08b675b5 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -73,10 +73,9 @@ static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, gfp_t flags) if (!qh) goto done; qh->hw = (struct ehci_qh_hw *) - dma_pool_alloc(ehci->qh_pool, flags, &dma); + dma_pool_zalloc(ehci->qh_pool, flags, &dma); if (!qh->hw) goto fail; - memset(qh->hw, 0, sizeof *qh->hw); qh->qh_dma = dma; // INIT_LIST_HEAD (&qh->qh_list); INIT_LIST_HEAD (&qh->qtd_list); diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index e56db44708bc..28e2a338b481 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1287,7 +1287,7 @@ itd_urb_transaction( } else { alloc_itd: spin_unlock_irqrestore(&ehci->lock, flags); - itd = dma_pool_alloc(ehci->itd_pool, mem_flags, + itd = dma_pool_zalloc(ehci->itd_pool, mem_flags, &itd_dma); spin_lock_irqsave(&ehci->lock, flags); if (!itd) { @@ -1297,7 +1297,6 @@ itd_urb_transaction( } } - memset(itd, 0, sizeof(*itd)); itd->itd_dma = itd_dma; itd->frame = NO_FRAME; list_add(&itd->itd_list, &sched->td_list); @@ -2081,7 +2080,7 @@ sitd_urb_transaction( } else { alloc_sitd: spin_unlock_irqrestore(&ehci->lock, flags); - sitd = dma_pool_alloc(ehci->sitd_pool, mem_flags, + sitd = dma_pool_zalloc(ehci->sitd_pool, mem_flags, &sitd_dma); spin_lock_irqsave(&ehci->lock, flags); if (!sitd) { @@ -2091,7 +2090,6 @@ sitd_urb_transaction( } } - memset(sitd, 0, sizeof(*sitd)); sitd->sitd_dma = sitd_dma; sitd->frame = NO_FRAME; list_add(&sitd->sitd_list, &iso_sched->td_list); -- cgit v1.2.1 From b382a5c3c592a53cdf0097e314dc9936f7eae16d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 16 Feb 2018 20:55:30 -0800 Subject: USB: chaoskey: Use kasprintf() over strcpy()/strcat() Instead of kmalloc() with manually calculated values followed by multiple strcpy()/strcat() calls, just fold it all into a single kasprintf() call. Signed-off-by: Kees Cook Reviewed-by: Keith Packard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/chaoskey.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c index 716cb515523e..cf5828ce927a 100644 --- a/drivers/usb/misc/chaoskey.c +++ b/drivers/usb/misc/chaoskey.c @@ -168,14 +168,10 @@ static int chaoskey_probe(struct usb_interface *interface, */ if (udev->product && udev->serial) { - dev->name = kmalloc(strlen(udev->product) + 1 + - strlen(udev->serial) + 1, GFP_KERNEL); + dev->name = kasprintf(GFP_KERNEL, "%s-%s", udev->product, + udev->serial); if (dev->name == NULL) goto out; - - strcpy(dev->name, udev->product); - strcat(dev->name, "-"); - strcat(dev->name, udev->serial); } dev->interface = interface; -- cgit v1.2.1 From e4c4835171a537d7acb66b21c6f6a046409aa586 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Thu, 1 Mar 2018 08:55:53 +0100 Subject: usb: usb-skeleton: make MODULE_LICENSE and SPDX tag match GPL v2 is the original license according to the old license text. See f64cdd0e94f1faf3b7f2b03af71f70dc6d8da0c2. Signed-off-by: Marcus Folkesson Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usb-skeleton.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 26ca0ec01fd5..c3ddd0f1f449 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -640,4 +640,4 @@ static struct usb_driver skel_driver = { module_usb_driver(skel_driver); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From cc9debf84ab359aae2becfb4bc9341f7574fe97b Mon Sep 17 00:00:00 2001 From: Kirill Kapranov Date: Sat, 17 Feb 2018 23:02:10 +0200 Subject: USB: adutux: Delete a misleading comment Delete a misleading comment to an obvious definition. Signed-off-by: Kirill Kapranov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/adutux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index 4b8712733fc7..f7a2fe42396f 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -54,7 +54,7 @@ MODULE_DEVICE_TABLE(usb, device_table); /* we can have up to this number of device plugged in at once */ #define MAX_DEVICES 16 -#define COMMAND_TIMEOUT (2*HZ) /* 60 second timeout for a command */ +#define COMMAND_TIMEOUT (2*HZ) /* * The locking scheme is a vanilla 3-lock: -- cgit v1.2.1 From f8ba22a39e985c93e278709b1d5f20857a26b49b Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 16 Jan 2018 16:26:56 +0530 Subject: phy: qcom-qmp: Fix phy pipe clock gating Pipe clock comes out of the phy and is available as long as the phy is turned on. Clock controller fails to gate this clock after the phy is turned off and generates a warning. / # [ 33.048561] gcc_usb3_phy_pipe_clk status stuck at 'on' [ 33.048585] ------------[ cut here ]------------ [ 33.052621] WARNING: CPU: 1 PID: 18 at ../drivers/clk/qcom/clk-branch.c:97 clk_branch_wait+0xf0/0x108 [ 33.057384] Modules linked in: [ 33.066497] CPU: 1 PID: 18 Comm: kworker/1:0 Tainted: G W 4.12.0-rc7-00024-gfe926e34c36d-dirty #96 [ 33.069451] Hardware name: Qualcomm Technologies, Inc. DB820c (DT) ... [ 33.278565] [] clk_branch_wait+0xf0/0x108 [ 33.286375] [] clk_branch2_disable+0x28/0x34 [ 33.291761] [] clk_core_disable+0x5c/0x88 [ 33.297660] [] clk_core_disable_lock+0x20/0x34 [ 33.303129] [] clk_disable+0x1c/0x24 [ 33.309384] [] qcom_qmp_phy_poweroff+0x20/0x48 [ 33.314328] [] phy_power_off+0x80/0xdc [ 33.320492] [] dwc3_core_exit+0x94/0xa0 [ 33.325784] [] dwc3_suspend_common+0x50/0x60 [ 33.331080] [] dwc3_runtime_suspend+0x48/0x6c [ 33.336810] [] pm_generic_runtime_suspend+0x28/0x38 [ 33.342627] [] __rpm_callback+0x150/0x254 [ 33.349222] [] rpm_callback+0x24/0x78 [ 33.354604] [] rpm_suspend+0xe0/0x4e4 [ 33.359813] [] pm_runtime_work+0xdc/0xf0 [ 33.365028] [] process_one_work+0x12c/0x28c [ 33.370576] [] worker_thread+0x58/0x3b8 [ 33.376393] [] kthread+0x100/0x12c [ 33.381776] [] ret_from_fork+0x10/0x50 Fix this by disabling it as the first thing in phy_exit(). Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Signed-off-by: Vivek Gautam Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index e17f0351ccc2..2526971f9929 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -751,8 +751,6 @@ static int qcom_qmp_phy_poweroff(struct phy *phy) struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; - clk_disable_unprepare(qphy->pipe_clk); - regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); return 0; @@ -936,6 +934,8 @@ static int qcom_qmp_phy_exit(struct phy *phy) const struct qmp_phy_cfg *cfg = qmp->cfg; int i = cfg->num_clks; + clk_disable_unprepare(qphy->pipe_clk); + /* PHY reset */ qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); -- cgit v1.2.1 From 10939b10741d2f022d5fc01915b264160395f32e Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 16 Jan 2018 16:26:57 +0530 Subject: phy: qcom-qmp: Adapt to clk_bulk_* APIs Move from using array of clocks to clk_bulk_* APIs that are available now. Signed-off-by: Vivek Gautam Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 50 ++++++++++++------------------------- 1 file changed, 16 insertions(+), 34 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 2526971f9929..5fed1aed019c 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -555,7 +555,7 @@ struct qcom_qmp { struct device *dev; void __iomem *serdes; - struct clk **clks; + struct clk_bulk_data *clks; struct reset_control **resets; struct regulator_bulk_data *vregs; @@ -857,22 +857,19 @@ static int qcom_qmp_phy_init(struct phy *phy) void __iomem *pcs = qphy->pcs; void __iomem *status; unsigned int mask, val; - int ret, i; + int ret; dev_vdbg(qmp->dev, "Initializing QMP phy\n"); - for (i = 0; i < qmp->cfg->num_clks; i++) { - ret = clk_prepare_enable(qmp->clks[i]); - if (ret) { - dev_err(qmp->dev, "failed to enable %s clk, err=%d\n", - qmp->cfg->clk_list[i], ret); - goto err_clk; - } + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + return ret; } ret = qcom_qmp_phy_com_init(qmp); if (ret) - goto err_clk; + goto err_com_init; if (cfg->has_lane_rst) { ret = reset_control_deassert(qphy->lane_rst); @@ -920,9 +917,8 @@ err_pcs_ready: reset_control_assert(qphy->lane_rst); err_lane_rst: qcom_qmp_phy_com_exit(qmp); -err_clk: - while (--i >= 0) - clk_disable_unprepare(qmp->clks[i]); +err_com_init: + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return ret; } @@ -932,7 +928,6 @@ static int qcom_qmp_phy_exit(struct phy *phy) struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; const struct qmp_phy_cfg *cfg = qmp->cfg; - int i = cfg->num_clks; clk_disable_unprepare(qphy->pipe_clk); @@ -950,8 +945,7 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); - while (--i >= 0) - clk_disable_unprepare(qmp->clks[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return 0; } @@ -1000,29 +994,17 @@ static int qcom_qmp_phy_reset_init(struct device *dev) static int qcom_qmp_phy_clk_init(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); - int ret, i; + int num = qmp->cfg->num_clks; + int i; - qmp->clks = devm_kcalloc(dev, qmp->cfg->num_clks, - sizeof(*qmp->clks), GFP_KERNEL); + qmp->clks = devm_kcalloc(dev, num, sizeof(*qmp->clks), GFP_KERNEL); if (!qmp->clks) return -ENOMEM; - for (i = 0; i < qmp->cfg->num_clks; i++) { - struct clk *_clk; - const char *name = qmp->cfg->clk_list[i]; - - _clk = devm_clk_get(dev, name); - if (IS_ERR(_clk)) { - ret = PTR_ERR(_clk); - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to get %s clk, %d\n", - name, ret); - return ret; - } - qmp->clks[i] = _clk; - } + for (i = 0; i < num; i++) + qmp->clks[i].id = qmp->cfg->clk_list[i]; - return 0; + return devm_clk_bulk_get(dev, num, qmp->clks); } /* -- cgit v1.2.1 From 717dab9d670eb0015c40f91e105c89537abd5f6a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:26:58 +0530 Subject: phy: qcom-qmp: Power-on PHY before initialization PHY regulators which are enabled from power_on() must be ON before turning-on clocks and initializing it as part of init(). As most of the core drivers perform power_on() after init(), move PHY regulators enable to com_init() and use power_on() to only enable pipe_clk. This pipe_clk is output from PHY and some core drivers e.g. PCIe follow specific sequence after phy_init() that mandates pipe_clk to be enabled from power_on() only. On similar lines move clk_enable from init() to com_init() which executes once for multi lane PHYs. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 61 +++++++++++++++---------------------- 1 file changed, 24 insertions(+), 37 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 5fed1aed019c..1b82cea7a79b 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -724,36 +724,13 @@ static int qcom_qmp_phy_poweron(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; - int num = qmp->cfg->num_vregs; int ret; - dev_vdbg(&phy->dev, "Powering on QMP phy\n"); - - /* turn on regulator supplies */ - ret = regulator_bulk_enable(num, qmp->vregs); - if (ret) { - dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); - return ret; - } - ret = clk_prepare_enable(qphy->pipe_clk); - if (ret) { + if (ret) dev_err(qmp->dev, "pipe_clk enable failed, err=%d\n", ret); - regulator_bulk_disable(num, qmp->vregs); - return ret; - } - return 0; -} - -static int qcom_qmp_phy_poweroff(struct phy *phy) -{ - struct qmp_phy *qphy = phy_get_drvdata(phy); - struct qcom_qmp *qmp = qphy->qmp; - - regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); - - return 0; + return ret; } static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) @@ -768,6 +745,19 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) return 0; } + /* turn on regulator supplies */ + ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs); + if (ret) { + dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); + goto err_reg_enable; + } + + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + goto err_clk_enable; + } + for (i = 0; i < cfg->num_resets; i++) { ret = reset_control_deassert(qmp->resets[i]); if (ret) { @@ -812,6 +802,10 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) err_rst: while (--i >= 0) reset_control_assert(qmp->resets[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); +err_clk_enable: + regulator_bulk_disable(cfg->num_vregs, qmp->vregs); +err_reg_enable: mutex_unlock(&qmp->phy_mutex); return ret; @@ -841,6 +835,10 @@ static int qcom_qmp_phy_com_exit(struct qcom_qmp *qmp) while (--i >= 0) reset_control_assert(qmp->resets[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + + regulator_bulk_disable(cfg->num_vregs, qmp->vregs); + mutex_unlock(&qmp->phy_mutex); return 0; @@ -861,15 +859,9 @@ static int qcom_qmp_phy_init(struct phy *phy) dev_vdbg(qmp->dev, "Initializing QMP phy\n"); - ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); - if (ret) { - dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); - return ret; - } - ret = qcom_qmp_phy_com_init(qmp); if (ret) - goto err_com_init; + return ret; if (cfg->has_lane_rst) { ret = reset_control_deassert(qphy->lane_rst); @@ -917,8 +909,6 @@ err_pcs_ready: reset_control_assert(qphy->lane_rst); err_lane_rst: qcom_qmp_phy_com_exit(qmp); -err_com_init: - clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return ret; } @@ -945,8 +935,6 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); - clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); - return 0; } @@ -1060,7 +1048,6 @@ static const struct phy_ops qcom_qmp_phy_gen_ops = { .init = qcom_qmp_phy_init, .exit = qcom_qmp_phy_exit, .power_on = qcom_qmp_phy_poweron, - .power_off = qcom_qmp_phy_poweroff, .owner = THIS_MODULE, }; -- cgit v1.2.1 From 937e17f36a32fc2ec01b9f99bac5b80acf22923c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:26:59 +0530 Subject: phy: qcom-qusb2: Power-on PHY before initialization PHY must be powered on before turning ON clocks and attempting to initialize it. Driver is exposing separate init and power_on routines for this. Apparently USB dwc3 core driver performs power-on after init. Also, poweron and init for QUSB2 PHY need to be executed together always, hence remove poweron callback from phy_ops and explicitly perform this from init, similar changes needed for poweroff. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 47 +++++++++++------------------------ 1 file changed, 15 insertions(+), 32 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 6c575244c0fb..4a5b2a1d2bba 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -195,54 +195,31 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4); } -static int qusb2_phy_poweron(struct phy *phy) +static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); - int num = ARRAY_SIZE(qphy->vregs); + unsigned int val; + unsigned int clk_scheme; int ret; - dev_vdbg(&phy->dev, "%s(): Powering-on QUSB2 phy\n", __func__); + dev_vdbg(&phy->dev, "%s(): Initializing QUSB2 phy\n", __func__); /* turn on regulator supplies */ - ret = regulator_bulk_enable(num, qphy->vregs); + ret = regulator_bulk_enable(ARRAY_SIZE(qphy->vregs), qphy->vregs); if (ret) return ret; ret = clk_prepare_enable(qphy->iface_clk); if (ret) { dev_err(&phy->dev, "failed to enable iface_clk, %d\n", ret); - regulator_bulk_disable(num, qphy->vregs); - return ret; + goto poweroff_phy; } - return 0; -} - -static int qusb2_phy_poweroff(struct phy *phy) -{ - struct qusb2_phy *qphy = phy_get_drvdata(phy); - - clk_disable_unprepare(qphy->iface_clk); - - regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); - - return 0; -} - -static int qusb2_phy_init(struct phy *phy) -{ - struct qusb2_phy *qphy = phy_get_drvdata(phy); - unsigned int val; - unsigned int clk_scheme; - int ret; - - dev_vdbg(&phy->dev, "%s(): Initializing QUSB2 phy\n", __func__); - /* enable ahb interface clock to program phy */ ret = clk_prepare_enable(qphy->cfg_ahb_clk); if (ret) { dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret); - return ret; + goto disable_iface_clk; } /* Perform phy reset */ @@ -344,6 +321,11 @@ assert_phy_reset: reset_control_assert(qphy->phy_reset); disable_ahb_clk: clk_disable_unprepare(qphy->cfg_ahb_clk); +disable_iface_clk: + clk_disable_unprepare(qphy->iface_clk); +poweroff_phy: + regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + return ret; } @@ -361,6 +343,9 @@ static int qusb2_phy_exit(struct phy *phy) reset_control_assert(qphy->phy_reset); clk_disable_unprepare(qphy->cfg_ahb_clk); + clk_disable_unprepare(qphy->iface_clk); + + regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); return 0; } @@ -368,8 +353,6 @@ static int qusb2_phy_exit(struct phy *phy) static const struct phy_ops qusb2_phy_gen_ops = { .init = qusb2_phy_init, .exit = qusb2_phy_exit, - .power_on = qusb2_phy_poweron, - .power_off = qusb2_phy_poweroff, .owner = THIS_MODULE, }; -- cgit v1.2.1 From c6549f0eefc4d492954af11421d359265c155a91 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:00 +0530 Subject: phy: qcom-qmp: Fix PHY block reset sequence PHY block or asynchronous reset requires signal to be asserted before de-asserting. Driver is only de-asserting signal which is already low, hence reset operation is a no-op. Fix this by asserting signal first. Also, resetting requires PHY clocks to be turned ON only after reset is finished. Fix that as well. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 1b82cea7a79b..ecff2616dc84 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -752,13 +752,16 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) goto err_reg_enable; } - ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); - if (ret) { - dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); - goto err_clk_enable; + for (i = 0; i < cfg->num_resets; i++) { + ret = reset_control_assert(qmp->resets[i]); + if (ret) { + dev_err(qmp->dev, "%s reset assert failed\n", + cfg->reset_list[i]); + goto err_rst_assert; + } } - for (i = 0; i < cfg->num_resets; i++) { + for (i = cfg->num_resets - 1; i >= 0; i--) { ret = reset_control_deassert(qmp->resets[i]); if (ret) { dev_err(qmp->dev, "%s reset deassert failed\n", @@ -767,6 +770,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) } } + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + goto err_rst; + } + if (cfg->has_phy_com_ctrl) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); @@ -791,7 +800,7 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) if (ret) { dev_err(qmp->dev, "phy common block init timed-out\n"); - goto err_rst; + goto err_com_init; } } @@ -799,11 +808,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) return 0; +err_com_init: + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); err_rst: - while (--i >= 0) + while (++i < cfg->num_resets) reset_control_assert(qmp->resets[i]); - clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); -err_clk_enable: +err_rst_assert: regulator_bulk_disable(cfg->num_vregs, qmp->vregs); err_reg_enable: mutex_unlock(&qmp->phy_mutex); -- cgit v1.2.1 From 76ddd300892a7e7c957c3ce0db5958c1c4866139 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:01 +0530 Subject: phy: qcom-qmp: Move SERDES/PCS START after PHY reset Driver is currently performing PHY reset after starting SERDES/PCS. As per hardware datasheet reset must be done before starting PHY. Hence, update the sequence. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index ecff2616dc84..edb6bbe95558 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -896,12 +896,12 @@ static int qcom_qmp_phy_init(struct phy *phy) if (cfg->has_pwrdn_delay) usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); - /* start SerDes and Phy-Coding-Sublayer */ - qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); - /* Pull PHY out of reset state */ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + /* start SerDes and Phy-Coding-Sublayer */ + qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); + status = pcs + cfg->regs[QPHY_PCS_READY_STATUS]; mask = cfg->mask_pcs_ready; -- cgit v1.2.1 From c71dabf27c3ac124c87a96681e4df5d49ea59dc4 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:02 +0530 Subject: phy: qcom-qusb2: Add support for different register layouts New version of QUSB2 PHY has some registers offset changed. Add support to have register layout for a target and update the same in phy_configuration. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 149 +++++++++++++++++++++++++--------- 1 file changed, 109 insertions(+), 40 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 4a5b2a1d2bba..b65635fba0e7 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -37,17 +37,10 @@ #define QUSB2PHY_PLL_AUTOPGM_CTL1 0x1c #define QUSB2PHY_PLL_PWR_CTRL 0x18 -#define QUSB2PHY_PLL_STATUS 0x38 +/* QUSB2PHY_PLL_STATUS register bits */ #define PLL_LOCKED BIT(5) -#define QUSB2PHY_PORT_TUNE1 0x80 -#define QUSB2PHY_PORT_TUNE2 0x84 -#define QUSB2PHY_PORT_TUNE3 0x88 -#define QUSB2PHY_PORT_TUNE4 0x8c -#define QUSB2PHY_PORT_TUNE5 0x90 -#define QUSB2PHY_PORT_TEST2 0x9c - -#define QUSB2PHY_PORT_POWERDOWN 0xb4 +/* QUSB2PHY_PORT_POWERDOWN register bits */ #define CLAMP_N_EN BIT(5) #define FREEZIO_N BIT(1) #define POWER_DOWN BIT(0) @@ -59,6 +52,11 @@ struct qusb2_phy_init_tbl { unsigned int offset; unsigned int val; + /* + * register part of layout ? + * if yes, then offset gives index in the reg-layout + */ + int in_layout; }; #define QUSB2_PHY_INIT_CFG(o, v) \ @@ -67,15 +65,50 @@ struct qusb2_phy_init_tbl { .val = v, \ } +#define QUSB2_PHY_INIT_CFG_L(o, v) \ + { \ + .offset = o, \ + .val = v, \ + .in_layout = 1, \ + } + +/* set of registers with offsets different per-PHY */ +enum qusb2phy_reg_layout { + QUSB2PHY_PLL_STATUS, + QUSB2PHY_PORT_TUNE1, + QUSB2PHY_PORT_TUNE2, + QUSB2PHY_PORT_TUNE3, + QUSB2PHY_PORT_TUNE4, + QUSB2PHY_PORT_TUNE5, + QUSB2PHY_PORT_TEST1, + QUSB2PHY_PORT_TEST2, + QUSB2PHY_PORT_POWERDOWN, + QUSB2PHY_INTR_CTRL, +}; + +static const unsigned int msm8996_regs_layout[] = { + [QUSB2PHY_PLL_STATUS] = 0x38, + [QUSB2PHY_PORT_TUNE1] = 0x80, + [QUSB2PHY_PORT_TUNE2] = 0x84, + [QUSB2PHY_PORT_TUNE3] = 0x88, + [QUSB2PHY_PORT_TUNE4] = 0x8c, + [QUSB2PHY_PORT_TUNE5] = 0x90, + [QUSB2PHY_PORT_TEST2] = 0x9c, + [QUSB2PHY_PORT_POWERDOWN] = 0xb4, +}; + static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE1, 0xf8), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE2, 0xb3), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE3, 0x83), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE4, 0xc0), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0xf8), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0xb3), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0x83), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0xc0), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_TUNE, 0x30), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL1, 0x79), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL2, 0x21), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TEST2, 0x14), + + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TEST2, 0x14), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_AUTOPGM_CTL1, 0x9f), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00), }; @@ -86,11 +119,27 @@ struct qusb2_phy_cfg { unsigned int tbl_num; /* offset to PHY_CLK_SCHEME register in TCSR map */ unsigned int clk_scheme_offset; + + /* array of registers with different offsets */ + const unsigned int *regs; + unsigned int mask_core_ready; + unsigned int disable_ctrl; + + /* true if PHY has PLL_TEST register to select clk_scheme */ + bool has_pll_test; + + /* true if TUNE1 register must be updated by fused value, else TUNE2 */ + bool update_tune1_with_efuse; }; static const struct qusb2_phy_cfg msm8996_phy_cfg = { - .tbl = msm8996_init_tbl, - .tbl_num = ARRAY_SIZE(msm8996_init_tbl), + .tbl = msm8996_init_tbl, + .tbl_num = ARRAY_SIZE(msm8996_init_tbl), + .regs = msm8996_regs_layout, + + .has_pll_test = true, + .disable_ctrl = (CLAMP_N_EN | FREEZIO_N | POWER_DOWN), + .mask_core_ready = PLL_LOCKED, }; static const char * const qusb2_phy_vreg_names[] = { @@ -160,26 +209,32 @@ static inline void qusb2_clrbits(void __iomem *base, u32 offset, u32 val) static inline void qcom_qusb2_phy_configure(void __iomem *base, + const unsigned int *regs, const struct qusb2_phy_init_tbl tbl[], int num) { int i; - for (i = 0; i < num; i++) - writel(tbl[i].val, base + tbl[i].offset); + for (i = 0; i < num; i++) { + if (tbl[i].in_layout) + writel(tbl[i].val, base + regs[tbl[i].offset]); + else + writel(tbl[i].val, base + tbl[i].offset); + } } /* * Fetches HS Tx tuning value from nvmem and sets the - * QUSB2PHY_PORT_TUNE2 register. + * QUSB2PHY_PORT_TUNE1/2 register. * For error case, skip setting the value and use the default value. */ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) { struct device *dev = &qphy->phy->dev; + const struct qusb2_phy_cfg *cfg = qphy->cfg; u8 *val; /* - * Read efuse register having TUNE2 parameter's high nibble. + * Read efuse register having TUNE2/1 parameter's high nibble. * If efuse register shows value as 0x0, or if we fail to find * a valid efuse register settings, then use default value * as 0xB for high nibble that we have already set while @@ -191,14 +246,21 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) return; } - /* Fused TUNE2 value is the higher nibble only */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4); + /* Fused TUNE1/2 value is the higher nibble only */ + if (cfg->update_tune1_with_efuse) + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE1], + val[0] << 0x4); + else + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE2], + val[0] << 0x4); + } static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); - unsigned int val; + const struct qusb2_phy_cfg *cfg = qphy->cfg; + unsigned int val = 0; unsigned int clk_scheme; int ret; @@ -239,20 +301,23 @@ static int qusb2_phy_init(struct phy *phy) } /* Disable the PHY */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, - CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_POWERDOWN], + qphy->cfg->disable_ctrl); - /* save reset value to override reference clock scheme later */ - val = readl(qphy->base + QUSB2PHY_PLL_TEST); + if (cfg->has_pll_test) { + /* save reset value to override reference clock scheme later */ + val = readl(qphy->base + QUSB2PHY_PLL_TEST); + } - qcom_qusb2_phy_configure(qphy->base, qphy->cfg->tbl, - qphy->cfg->tbl_num); + qcom_qusb2_phy_configure(qphy->base, cfg->regs, cfg->tbl, + cfg->tbl_num); /* Set efuse value for tuning the PHY */ qusb2_phy_set_tune2_param(qphy); /* Enable the PHY */ - qusb2_clrbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, POWER_DOWN); + qusb2_clrbits(qphy->base, cfg->regs[QUSB2PHY_PORT_POWERDOWN], + POWER_DOWN); /* Required to get phy pll lock successfully */ usleep_range(150, 160); @@ -285,27 +350,31 @@ static int qusb2_phy_init(struct phy *phy) } if (!qphy->has_se_clk_scheme) { - val &= ~CLK_REF_SEL; ret = clk_prepare_enable(qphy->ref_clk); if (ret) { dev_err(&phy->dev, "failed to enable ref clk, %d\n", ret); goto assert_phy_reset; } - } else { - val |= CLK_REF_SEL; } - writel(val, qphy->base + QUSB2PHY_PLL_TEST); + if (cfg->has_pll_test) { + if (!qphy->has_se_clk_scheme) + val &= ~CLK_REF_SEL; + else + val |= CLK_REF_SEL; + + writel(val, qphy->base + QUSB2PHY_PLL_TEST); - /* ensure above write is through */ - readl(qphy->base + QUSB2PHY_PLL_TEST); + /* ensure above write is through */ + readl(qphy->base + QUSB2PHY_PLL_TEST); + } /* Required to get phy pll lock successfully */ usleep_range(100, 110); - val = readb(qphy->base + QUSB2PHY_PLL_STATUS); - if (!(val & PLL_LOCKED)) { + val = readb(qphy->base + cfg->regs[QUSB2PHY_PLL_STATUS]); + if (!(val & cfg->mask_core_ready)) { dev_err(&phy->dev, "QUSB2PHY pll lock failed: status reg = %x\n", val); ret = -EBUSY; @@ -334,8 +403,8 @@ static int qusb2_phy_exit(struct phy *phy) struct qusb2_phy *qphy = phy_get_drvdata(phy); /* Disable the PHY */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, - CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + qusb2_setbits(qphy->base, qphy->cfg->regs[QUSB2PHY_PORT_POWERDOWN], + qphy->cfg->disable_ctrl); if (!qphy->has_se_clk_scheme) clk_disable_unprepare(qphy->ref_clk); -- cgit v1.2.1 From ecf66ac2a06b16c7de00361c659b123b541e5f6a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:03 +0530 Subject: dt-bindings: phy-qcom-qusb2: Update binding for QUSB2 V2 version Update generic compatible string for QUSB2 V2 PHY. This will allow all targets using QUSB2 V2 use same string. Acked-by: Rob Herring Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt index aa0fcb05acb3..42c97426836e 100644 --- a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt @@ -4,7 +4,10 @@ Qualcomm QUSB2 phy controller QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets. Required properties: - - compatible: compatible list, contains "qcom,msm8996-qusb2-phy". + - compatible: compatible list, contains + "qcom,msm8996-qusb2-phy" for 14nm PHY on msm8996, + "qcom,qusb2-v2-phy" for QUSB2 V2 PHY. + - reg: offset and length of the PHY register set. - #phy-cells: must be 0. -- cgit v1.2.1 From 4a705d9b3ea0947ac1e9c55830f72aaf65c17027 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:04 +0530 Subject: phy: qcom-qusb2: Add support for QUSB2 V2 version Use register layout to add additional registers present on QUSB2 PHY V2 version for PHY initialization. Other than new registers on V2, following two register's offset and bit definitions are different: POWERDOWN control and PLL_STATUS. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 64 +++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index b65635fba0e7..9b0d1ff89f97 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -40,15 +40,34 @@ /* QUSB2PHY_PLL_STATUS register bits */ #define PLL_LOCKED BIT(5) +/* QUSB2PHY_PLL_COMMON_STATUS_ONE register bits */ +#define CORE_READY_STATUS BIT(0) + /* QUSB2PHY_PORT_POWERDOWN register bits */ #define CLAMP_N_EN BIT(5) #define FREEZIO_N BIT(1) #define POWER_DOWN BIT(0) +/* QUSB2PHY_PWR_CTRL1 register bits */ +#define PWR_CTRL1_VREF_SUPPLY_TRIM BIT(5) +#define PWR_CTRL1_CLAMP_N_EN BIT(1) + #define QUSB2PHY_REFCLK_ENABLE BIT(0) #define PHY_CLK_SCHEME_SEL BIT(0) +#define QUSB2PHY_PLL_ANALOG_CONTROLS_TWO 0x04 +#define QUSB2PHY_PLL_CLOCK_INVERTERS 0x18c +#define QUSB2PHY_PLL_CMODE 0x2c +#define QUSB2PHY_PLL_LOCK_DELAY 0x184 +#define QUSB2PHY_PLL_DIGITAL_TIMERS_TWO 0xb4 +#define QUSB2PHY_PLL_BIAS_CONTROL_1 0x194 +#define QUSB2PHY_PLL_BIAS_CONTROL_2 0x198 +#define QUSB2PHY_PWR_CTRL2 0x214 +#define QUSB2PHY_IMP_CTRL1 0x220 +#define QUSB2PHY_IMP_CTRL2 0x224 +#define QUSB2PHY_CHG_CTRL2 0x23c + struct qusb2_phy_init_tbl { unsigned int offset; unsigned int val; @@ -113,6 +132,38 @@ static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00), }; +static const unsigned int qusb2_v2_regs_layout[] = { + [QUSB2PHY_PLL_STATUS] = 0x1a0, + [QUSB2PHY_PORT_TUNE1] = 0x240, + [QUSB2PHY_PORT_TUNE2] = 0x244, + [QUSB2PHY_PORT_TUNE3] = 0x248, + [QUSB2PHY_PORT_TUNE4] = 0x24c, + [QUSB2PHY_PORT_TUNE5] = 0x250, + [QUSB2PHY_PORT_TEST2] = 0x258, + [QUSB2PHY_PORT_POWERDOWN] = 0x210, +}; + +static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = { + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_ANALOG_CONTROLS_TWO, 0x03), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CLOCK_INVERTERS, 0x7c), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CMODE, 0x80), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_LOCK_DELAY, 0x0a), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_DIGITAL_TIMERS_TWO, 0x19), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_1, 0x40), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_2, 0x20), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PWR_CTRL2, 0x21), + QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL1, 0x0), + QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL2, 0x58), + + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0x30), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0x29), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0xca), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0x04), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE5, 0x03), + + QUSB2_PHY_INIT_CFG(QUSB2PHY_CHG_CTRL2, 0x0), +}; + struct qusb2_phy_cfg { const struct qusb2_phy_init_tbl *tbl; /* number of entries in the table */ @@ -142,6 +193,16 @@ static const struct qusb2_phy_cfg msm8996_phy_cfg = { .mask_core_ready = PLL_LOCKED, }; +static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { + .tbl = qusb2_v2_init_tbl, + .tbl_num = ARRAY_SIZE(qusb2_v2_init_tbl), + .regs = qusb2_v2_regs_layout, + + .disable_ctrl = (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN | + POWER_DOWN), + .mask_core_ready = CORE_READY_STATUS, +}; + static const char * const qusb2_phy_vreg_names[] = { "vdda-pll", "vdda-phy-dpdm", }; @@ -429,6 +490,9 @@ static const struct of_device_id qusb2_phy_of_match_table[] = { { .compatible = "qcom,msm8996-qusb2-phy", .data = &msm8996_phy_cfg, + }, { + .compatible = "qcom,qusb2-v2-phy", + .data = &qusb2_v2_phy_cfg, }, { }, }; -- cgit v1.2.1 From e2248617ec157061131c69a54e896d6a298bfe2c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:05 +0530 Subject: phy: qcom-qmp: Move register offsets to header file New revision (v3) of QMP PHY uses different offsets for almost all of the registers. Hence, move these definitions to header file so that updated offsets can be added for QMP v3. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 119 +-------------------------------- drivers/phy/qualcomm/phy-qcom-qmp.h | 128 ++++++++++++++++++++++++++++++++++++ 2 files changed, 129 insertions(+), 118 deletions(-) create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp.h diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index edb6bbe95558..2a1117b1abeb 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -31,124 +31,7 @@ #include -/* QMP PHY QSERDES COM registers */ -#define QSERDES_COM_BG_TIMER 0x00c -#define QSERDES_COM_SSC_EN_CENTER 0x010 -#define QSERDES_COM_SSC_ADJ_PER1 0x014 -#define QSERDES_COM_SSC_ADJ_PER2 0x018 -#define QSERDES_COM_SSC_PER1 0x01c -#define QSERDES_COM_SSC_PER2 0x020 -#define QSERDES_COM_SSC_STEP_SIZE1 0x024 -#define QSERDES_COM_SSC_STEP_SIZE2 0x028 -#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 -#define QSERDES_COM_CLK_ENABLE1 0x038 -#define QSERDES_COM_SYS_CLK_CTRL 0x03c -#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 -#define QSERDES_COM_PLL_IVCO 0x048 -#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c -#define QSERDES_COM_LOCK_CMP2_MODE0 0x050 -#define QSERDES_COM_LOCK_CMP3_MODE0 0x054 -#define QSERDES_COM_LOCK_CMP1_MODE1 0x058 -#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c -#define QSERDES_COM_LOCK_CMP3_MODE1 0x060 -#define QSERDES_COM_BG_TRIM 0x070 -#define QSERDES_COM_CLK_EP_DIV 0x074 -#define QSERDES_COM_CP_CTRL_MODE0 0x078 -#define QSERDES_COM_CP_CTRL_MODE1 0x07c -#define QSERDES_COM_PLL_RCTRL_MODE0 0x084 -#define QSERDES_COM_PLL_RCTRL_MODE1 0x088 -#define QSERDES_COM_PLL_CCTRL_MODE0 0x090 -#define QSERDES_COM_PLL_CCTRL_MODE1 0x094 -#define QSERDES_COM_BIAS_EN_CTRL_BY_PSM 0x0a8 -#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac -#define QSERDES_COM_RESETSM_CNTRL 0x0b4 -#define QSERDES_COM_RESTRIM_CTRL 0x0bc -#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 -#define QSERDES_COM_LOCK_CMP_EN 0x0c8 -#define QSERDES_COM_LOCK_CMP_CFG 0x0cc -#define QSERDES_COM_DEC_START_MODE0 0x0d0 -#define QSERDES_COM_DEC_START_MODE1 0x0d4 -#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc -#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 -#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 -#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 -#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec -#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 -#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 -#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c -#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 -#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 -#define QSERDES_COM_VCO_TUNE_CTRL 0x124 -#define QSERDES_COM_VCO_TUNE_MAP 0x128 -#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c -#define QSERDES_COM_VCO_TUNE2_MODE0 0x130 -#define QSERDES_COM_VCO_TUNE1_MODE1 0x134 -#define QSERDES_COM_VCO_TUNE2_MODE1 0x138 -#define QSERDES_COM_VCO_TUNE_TIMER1 0x144 -#define QSERDES_COM_VCO_TUNE_TIMER2 0x148 -#define QSERDES_COM_BG_CTRL 0x170 -#define QSERDES_COM_CLK_SELECT 0x174 -#define QSERDES_COM_HSCLK_SEL 0x178 -#define QSERDES_COM_CORECLK_DIV 0x184 -#define QSERDES_COM_CORE_CLK_EN 0x18c -#define QSERDES_COM_C_READY_STATUS 0x190 -#define QSERDES_COM_CMN_CONFIG 0x194 -#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c -#define QSERDES_COM_DEBUG_BUS0 0x1a0 -#define QSERDES_COM_DEBUG_BUS1 0x1a4 -#define QSERDES_COM_DEBUG_BUS2 0x1a8 -#define QSERDES_COM_DEBUG_BUS3 0x1ac -#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 -#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc - -/* QMP PHY TX registers */ -#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 -#define QSERDES_TX_DEBUG_BUS_SEL 0x064 -#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 -#define QSERDES_TX_LANE_MODE 0x094 -#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac - -/* QMP PHY RX registers */ -#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 -#define QSERDES_RX_UCDR_SO_GAIN 0x01c -#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 -#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 -#define QSERDES_RX_RX_TERM_BW 0x090 -#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 -#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 -#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc -#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 -#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 -#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c -#define QSERDES_RX_SIGDET_ENABLES 0x110 -#define QSERDES_RX_SIGDET_CNTRL 0x114 -#define QSERDES_RX_SIGDET_LVL 0x118 -#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c -#define QSERDES_RX_RX_BAND 0x120 -#define QSERDES_RX_RX_INTERFACE_MODE 0x12c - -/* QMP PHY PCS registers */ -#define QPHY_POWER_DOWN_CONTROL 0x04 -#define QPHY_TXDEEMPH_M6DB_V0 0x24 -#define QPHY_TXDEEMPH_M3P5DB_V0 0x28 -#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 -#define QPHY_RX_IDLE_DTCT_CNTRL 0x58 -#define QPHY_POWER_STATE_CONFIG1 0x60 -#define QPHY_POWER_STATE_CONFIG2 0x64 -#define QPHY_POWER_STATE_CONFIG4 0x6c -#define QPHY_LOCK_DETECT_CONFIG1 0x80 -#define QPHY_LOCK_DETECT_CONFIG2 0x84 -#define QPHY_LOCK_DETECT_CONFIG3 0x88 -#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 -#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 -#define QPHY_PLL_LOCK_CHK_DLY_TIME_AUXCLK_LSB 0x1A8 -#define QPHY_OSC_DTCT_ACTIONS 0x1AC -#define QPHY_RX_SIGDET_LVL 0x1D8 -#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC -#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 +#include "phy-qcom-qmp.h" /* QPHY_SW_RESET bit */ #define SW_RESET BIT(0) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h new file mode 100644 index 000000000000..84d7038dcc09 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2017, The Linux Foundation. All rights reserved. + */ + +#ifndef QCOM_PHY_QMP_H_ +#define QCOM_PHY_QMP_H_ + +/* Only for QMP V2 PHY - QSERDES COM registers */ +#define QSERDES_COM_BG_TIMER 0x00c +#define QSERDES_COM_SSC_EN_CENTER 0x010 +#define QSERDES_COM_SSC_ADJ_PER1 0x014 +#define QSERDES_COM_SSC_ADJ_PER2 0x018 +#define QSERDES_COM_SSC_PER1 0x01c +#define QSERDES_COM_SSC_PER2 0x020 +#define QSERDES_COM_SSC_STEP_SIZE1 0x024 +#define QSERDES_COM_SSC_STEP_SIZE2 0x028 +#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 +#define QSERDES_COM_CLK_ENABLE1 0x038 +#define QSERDES_COM_SYS_CLK_CTRL 0x03c +#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 +#define QSERDES_COM_PLL_IVCO 0x048 +#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c +#define QSERDES_COM_LOCK_CMP2_MODE0 0x050 +#define QSERDES_COM_LOCK_CMP3_MODE0 0x054 +#define QSERDES_COM_LOCK_CMP1_MODE1 0x058 +#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c +#define QSERDES_COM_LOCK_CMP3_MODE1 0x060 +#define QSERDES_COM_BG_TRIM 0x070 +#define QSERDES_COM_CLK_EP_DIV 0x074 +#define QSERDES_COM_CP_CTRL_MODE0 0x078 +#define QSERDES_COM_CP_CTRL_MODE1 0x07c +#define QSERDES_COM_PLL_RCTRL_MODE0 0x084 +#define QSERDES_COM_PLL_RCTRL_MODE1 0x088 +#define QSERDES_COM_PLL_CCTRL_MODE0 0x090 +#define QSERDES_COM_PLL_CCTRL_MODE1 0x094 +#define QSERDES_COM_BIAS_EN_CTRL_BY_PSM 0x0a8 +#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac +#define QSERDES_COM_RESETSM_CNTRL 0x0b4 +#define QSERDES_COM_RESTRIM_CTRL 0x0bc +#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 +#define QSERDES_COM_LOCK_CMP_EN 0x0c8 +#define QSERDES_COM_LOCK_CMP_CFG 0x0cc +#define QSERDES_COM_DEC_START_MODE0 0x0d0 +#define QSERDES_COM_DEC_START_MODE1 0x0d4 +#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc +#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 +#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 +#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 +#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec +#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 +#define QSERDES_COM_VCO_TUNE_CTRL 0x124 +#define QSERDES_COM_VCO_TUNE_MAP 0x128 +#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c +#define QSERDES_COM_VCO_TUNE2_MODE0 0x130 +#define QSERDES_COM_VCO_TUNE1_MODE1 0x134 +#define QSERDES_COM_VCO_TUNE2_MODE1 0x138 +#define QSERDES_COM_VCO_TUNE_TIMER1 0x144 +#define QSERDES_COM_VCO_TUNE_TIMER2 0x148 +#define QSERDES_COM_BG_CTRL 0x170 +#define QSERDES_COM_CLK_SELECT 0x174 +#define QSERDES_COM_HSCLK_SEL 0x178 +#define QSERDES_COM_CORECLK_DIV 0x184 +#define QSERDES_COM_CORE_CLK_EN 0x18c +#define QSERDES_COM_C_READY_STATUS 0x190 +#define QSERDES_COM_CMN_CONFIG 0x194 +#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c +#define QSERDES_COM_DEBUG_BUS0 0x1a0 +#define QSERDES_COM_DEBUG_BUS1 0x1a4 +#define QSERDES_COM_DEBUG_BUS2 0x1a8 +#define QSERDES_COM_DEBUG_BUS3 0x1ac +#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 +#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc + +/* Only for QMP V2 PHY - TX registers */ +#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 +#define QSERDES_TX_DEBUG_BUS_SEL 0x064 +#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 +#define QSERDES_TX_LANE_MODE 0x094 +#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac + +/* Only for QMP V2 PHY - RX registers */ +#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 +#define QSERDES_RX_UCDR_SO_GAIN 0x01c +#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 +#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 +#define QSERDES_RX_RX_TERM_BW 0x090 +#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 +#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 +#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc +#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 +#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 +#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c +#define QSERDES_RX_SIGDET_ENABLES 0x110 +#define QSERDES_RX_SIGDET_CNTRL 0x114 +#define QSERDES_RX_SIGDET_LVL 0x118 +#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c +#define QSERDES_RX_RX_BAND 0x120 +#define QSERDES_RX_RX_INTERFACE_MODE 0x12c + +/* Only for QMP V2 PHY - PCS registers */ +#define QPHY_POWER_DOWN_CONTROL 0x04 +#define QPHY_TXDEEMPH_M6DB_V0 0x24 +#define QPHY_TXDEEMPH_M3P5DB_V0 0x28 +#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 +#define QPHY_RX_IDLE_DTCT_CNTRL 0x58 +#define QPHY_POWER_STATE_CONFIG1 0x60 +#define QPHY_POWER_STATE_CONFIG2 0x64 +#define QPHY_POWER_STATE_CONFIG4 0x6c +#define QPHY_LOCK_DETECT_CONFIG1 0x80 +#define QPHY_LOCK_DETECT_CONFIG2 0x84 +#define QPHY_LOCK_DETECT_CONFIG3 0x88 +#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 +#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 +#define QPHY_PLL_LOCK_CHK_DLY_TIME_AUXCLK_LSB 0x1A8 +#define QPHY_OSC_DTCT_ACTIONS 0x1AC +#define QPHY_RX_SIGDET_LVL 0x1D8 +#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC +#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 + +#endif -- cgit v1.2.1 From 9c7761a360df08451bf61a5ea8a7b131c611ffd2 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:06 +0530 Subject: phy: qcom-qmp: Add register offsets for QMP V3 PHY Registers offsets for QMP V3 PHY are changed from previous versions (1/2), update same in header file. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.h | 149 ++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h index 84d7038dcc09..944269a62761 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.h +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -125,4 +125,153 @@ #define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC #define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 +/* Only for QMP V3 PHY - DP COM registers */ +#define QPHY_V3_DP_COM_PHY_MODE_CTRL 0x00 +#define QPHY_V3_DP_COM_SW_RESET 0x04 +#define QPHY_V3_DP_COM_POWER_DOWN_CTRL 0x08 +#define QPHY_V3_DP_COM_SWI_CTRL 0x0c +#define QPHY_V3_DP_COM_TYPEC_CTRL 0x10 +#define QPHY_V3_DP_COM_TYPEC_PWRDN_CTRL 0x14 +#define QPHY_V3_DP_COM_RESET_OVRD_CTRL 0x1c + +/* Only for QMP V3 PHY - QSERDES COM registers */ +#define QSERDES_V3_COM_BG_TIMER 0x00c +#define QSERDES_V3_COM_SSC_EN_CENTER 0x010 +#define QSERDES_V3_COM_SSC_ADJ_PER1 0x014 +#define QSERDES_V3_COM_SSC_ADJ_PER2 0x018 +#define QSERDES_V3_COM_SSC_PER1 0x01c +#define QSERDES_V3_COM_SSC_PER2 0x020 +#define QSERDES_V3_COM_SSC_STEP_SIZE1 0x024 +#define QSERDES_V3_COM_SSC_STEP_SIZE2 0x028 +#define QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN 0x034 +#define QSERDES_V3_COM_CLK_ENABLE1 0x038 +#define QSERDES_V3_COM_SYS_CLK_CTRL 0x03c +#define QSERDES_V3_COM_SYSCLK_BUF_ENABLE 0x040 +#define QSERDES_V3_COM_PLL_IVCO 0x048 +#define QSERDES_V3_COM_LOCK_CMP1_MODE0 0x098 +#define QSERDES_V3_COM_LOCK_CMP2_MODE0 0x09c +#define QSERDES_V3_COM_LOCK_CMP3_MODE0 0x0a0 +#define QSERDES_V3_COM_LOCK_CMP1_MODE1 0x0a4 +#define QSERDES_V3_COM_LOCK_CMP2_MODE1 0x0a8 +#define QSERDES_V3_COM_LOCK_CMP3_MODE1 0x0ac +#define QSERDES_V3_COM_CLK_EP_DIV 0x05c +#define QSERDES_V3_COM_CP_CTRL_MODE0 0x060 +#define QSERDES_V3_COM_CP_CTRL_MODE1 0x064 +#define QSERDES_V3_COM_PLL_RCTRL_MODE0 0x068 +#define QSERDES_V3_COM_PLL_RCTRL_MODE1 0x06c +#define QSERDES_V3_COM_PLL_CCTRL_MODE0 0x070 +#define QSERDES_V3_COM_PLL_CCTRL_MODE1 0x074 +#define QSERDES_V3_COM_SYSCLK_EN_SEL 0x080 +#define QSERDES_V3_COM_RESETSM_CNTRL 0x088 +#define QSERDES_V3_COM_RESETSM_CNTRL2 0x08c +#define QSERDES_V3_COM_LOCK_CMP_EN 0x090 +#define QSERDES_V3_COM_LOCK_CMP_CFG 0x094 +#define QSERDES_V3_COM_DEC_START_MODE0 0x0b0 +#define QSERDES_V3_COM_DEC_START_MODE1 0x0b4 +#define QSERDES_V3_COM_DIV_FRAC_START1_MODE0 0x0b8 +#define QSERDES_V3_COM_DIV_FRAC_START2_MODE0 0x0bc +#define QSERDES_V3_COM_DIV_FRAC_START3_MODE0 0x0c0 +#define QSERDES_V3_COM_DIV_FRAC_START1_MODE1 0x0c4 +#define QSERDES_V3_COM_DIV_FRAC_START2_MODE1 0x0c8 +#define QSERDES_V3_COM_DIV_FRAC_START3_MODE1 0x0cc +#define QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0 0x0d8 +#define QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0 0x0dc +#define QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE1 0x0e0 +#define QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE1 0x0e4 +#define QSERDES_V3_COM_VCO_TUNE_CTRL 0x0ec +#define QSERDES_V3_COM_VCO_TUNE_MAP 0x0f0 +#define QSERDES_V3_COM_VCO_TUNE1_MODE0 0x0f4 +#define QSERDES_V3_COM_VCO_TUNE2_MODE0 0x0f8 +#define QSERDES_V3_COM_VCO_TUNE1_MODE1 0x0fc +#define QSERDES_V3_COM_VCO_TUNE2_MODE1 0x100 +#define QSERDES_V3_COM_VCO_TUNE_TIMER1 0x11c +#define QSERDES_V3_COM_VCO_TUNE_TIMER2 0x120 +#define QSERDES_V3_COM_CLK_SELECT 0x138 +#define QSERDES_V3_COM_HSCLK_SEL 0x13c +#define QSERDES_V3_COM_CORECLK_DIV_MODE0 0x148 +#define QSERDES_V3_COM_CORECLK_DIV_MODE1 0x14c +#define QSERDES_V3_COM_CORE_CLK_EN 0x154 +#define QSERDES_V3_COM_C_READY_STATUS 0x158 +#define QSERDES_V3_COM_CMN_CONFIG 0x15c +#define QSERDES_V3_COM_SVS_MODE_CLK_SEL 0x164 +#define QSERDES_V3_COM_DEBUG_BUS0 0x168 +#define QSERDES_V3_COM_DEBUG_BUS1 0x16c +#define QSERDES_V3_COM_DEBUG_BUS2 0x170 +#define QSERDES_V3_COM_DEBUG_BUS3 0x174 +#define QSERDES_V3_COM_DEBUG_BUS_SEL 0x178 + +/* Only for QMP V3 PHY - TX registers */ +#define QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX 0x044 +#define QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX 0x048 +#define QSERDES_V3_TX_DEBUG_BUS_SEL 0x058 +#define QSERDES_V3_TX_HIGHZ_DRVR_EN 0x060 +#define QSERDES_V3_TX_LANE_MODE_1 0x08c +#define QSERDES_V3_TX_RCV_DETECT_LVL_2 0x0a4 + +/* Only for QMP V3 PHY - RX registers */ +#define QSERDES_V3_RX_UCDR_SO_GAIN_HALF 0x00c +#define QSERDES_V3_RX_UCDR_SO_GAIN 0x014 +#define QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN 0x030 +#define QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE 0x034 +#define QSERDES_V3_RX_RX_TERM_BW 0x07c +#define QSERDES_V3_RX_RX_EQ_GAIN2_LSB 0x0c8 +#define QSERDES_V3_RX_RX_EQ_GAIN2_MSB 0x0cc +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d4 +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3 0x0d8 +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4 0x0dc +#define QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x0f8 +#define QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x0fc +#define QSERDES_V3_RX_SIGDET_ENABLES 0x100 +#define QSERDES_V3_RX_SIGDET_CNTRL 0x104 +#define QSERDES_V3_RX_SIGDET_LVL 0x108 +#define QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL 0x10c +#define QSERDES_V3_RX_RX_BAND 0x110 +#define QSERDES_V3_RX_RX_INTERFACE_MODE 0x11c + +/* Only for QMP V3 PHY - PCS registers */ +#define QPHY_V3_PCS_POWER_DOWN_CONTROL 0x004 +#define QPHY_V3_PCS_TXMGN_V0 0x00c +#define QPHY_V3_PCS_TXMGN_V1 0x010 +#define QPHY_V3_PCS_TXMGN_V2 0x014 +#define QPHY_V3_PCS_TXMGN_V3 0x018 +#define QPHY_V3_PCS_TXMGN_V4 0x01c +#define QPHY_V3_PCS_TXMGN_LS 0x020 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V0 0x024 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0 0x028 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V1 0x02c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V1 0x030 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V2 0x034 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V2 0x038 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V3 0x03c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V3 0x040 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V4 0x044 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V4 0x048 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_LS 0x04c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_LS 0x050 +#define QPHY_V3_PCS_ENDPOINT_REFCLK_DRIVE 0x054 +#define QPHY_V3_PCS_RX_IDLE_DTCT_CNTRL 0x058 +#define QPHY_V3_PCS_RATE_SLEW_CNTRL 0x05c +#define QPHY_V3_PCS_POWER_STATE_CONFIG1 0x060 +#define QPHY_V3_PCS_POWER_STATE_CONFIG2 0x064 +#define QPHY_V3_PCS_POWER_STATE_CONFIG4 0x06c +#define QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L 0x070 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H 0x074 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L 0x078 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H 0x07c +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG1 0x080 +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG2 0x084 +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG3 0x088 +#define QPHY_V3_PCS_TSYNC_RSYNC_TIME 0x08c +#define QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK 0x0a0 +#define QPHY_V3_PCS_LP_WAKEUP_DLY_TIME_AUXCLK 0x0a4 +#define QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK 0x0b0 +#define QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME 0x0b8 +#define QPHY_V3_PCS_RXEQTRAINING_RUN_TIME 0x0bc +#define QPHY_V3_PCS_FLL_CNTRL1 0x0c4 +#define QPHY_V3_PCS_FLL_CNTRL2 0x0c8 +#define QPHY_V3_PCS_FLL_CNT_VAL_L 0x0cc +#define QPHY_V3_PCS_FLL_CNT_VAL_H_TOL 0x0d0 +#define QPHY_V3_PCS_FLL_MAN_CODE 0x0d4 +#define QPHY_V3_PCS_RX_SIGDET_LVL 0x1d8 + #endif -- cgit v1.2.1 From 8587b220f05e4f09e6b2b7c0c078b9ee7f8cfd9e Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:07 +0530 Subject: dt-bindings: phy-qcom-qmp: Update bindings for QMP V3 USB PHY Update compatible string and clock names for QMP version V3 USB PHY. Acked-by: Rob Herring Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt index b6a9f2b92bab..dcf1b8f691d5 100644 --- a/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt @@ -8,7 +8,8 @@ Required properties: - compatible: compatible list, contains: "qcom,ipq8074-qmp-pcie-phy" for PCIe phy on IPQ8074 "qcom,msm8996-qmp-pcie-phy" for 14nm PCIe phy on msm8996, - "qcom,msm8996-qmp-usb3-phy" for 14nm USB3 phy on msm8996. + "qcom,msm8996-qmp-usb3-phy" for 14nm USB3 phy on msm8996, + "qcom,qmp-v3-usb3-phy" for USB3 QMP V3 phy. - reg: offset and length of register set for PHY's common serdes block. @@ -25,10 +26,13 @@ Required properties: - clock-names: "cfg_ahb" for phy config clock, "aux" for phy aux clock, "ref" for 19.2 MHz ref clk, + "com_aux" for phy common block aux clock, For "qcom,msm8996-qmp-pcie-phy" must contain: "aux", "cfg_ahb", "ref". For "qcom,msm8996-qmp-usb3-phy" must contain: "aux", "cfg_ahb", "ref". + For "qcom,qmp-v3-usb3-phy" must contain: + "aux", "cfg_ahb", "ref", "com_aux". - resets: a list of phandles and reset controller specifier pairs, one for each entry in reset-names. -- cgit v1.2.1 From efb05a50c956b4ccd09c8401eed53bf3894d4026 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:08 +0530 Subject: phy: qcom-qmp: Add support for QMP V3 USB3 PHY QMP V3 USB3 PHY is a DisplayPort (DP) and USB combo PHY with dual RX/TX lanes to support type-c. There is a separate block DP_COM for configuration related to type-c or DP. Add support for dp_com region and secondary rx/tx lanes initialization. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 223 +++++++++++++++++++++++++++++++++++- 1 file changed, 220 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 2a1117b1abeb..55b83974b531 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -47,6 +47,21 @@ /* QPHY_COM_PCS_READY_STATUS bit */ #define PCS_READY BIT(0) +/* QPHY_V3_DP_COM_RESET_OVRD_CTRL register bits */ +/* DP PHY soft reset */ +#define SW_DPPHY_RESET BIT(0) +/* mux to select DP PHY reset control, 0:HW control, 1: software reset */ +#define SW_DPPHY_RESET_MUX BIT(1) +/* USB3 PHY soft reset */ +#define SW_USB3PHY_RESET BIT(2) +/* mux to select USB3 PHY reset control, 0:HW control, 1: software reset */ +#define SW_USB3PHY_RESET_MUX BIT(3) + +/* QPHY_V3_DP_COM_PHY_MODE_CTRL register bits */ +#define USB3_MODE BIT(0) /* enables USB3 mode */ +#define DP_MODE BIT(1) /* enables DP mode */ + + #define PHY_INIT_COMPLETE_TIMEOUT 1000 #define POWER_DOWN_DELAY_US_MIN 10 #define POWER_DOWN_DELAY_US_MAX 11 @@ -122,6 +137,12 @@ static const unsigned int usb3phy_regs_layout[] = { [QPHY_PCS_READY_STATUS] = 0x17c, }; +static const unsigned int qmp_v3_usb3phy_regs_layout[] = { + [QPHY_SW_RESET] = 0x00, + [QPHY_START_CTRL] = 0x08, + [QPHY_PCS_READY_STATUS] = 0x174, +}; + static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), @@ -350,6 +371,112 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_pcs_tbl[] = { QMP_PHY_INIT_CFG_L(QPHY_START_CTRL, 0x3), }; +static const struct qmp_phy_init_tbl qmp_v3_usb3_serdes_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_IVCO, 0x07), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_EN_SEL, 0x14), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN, 0x08), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_SELECT, 0x30), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYS_CLK_CTRL, 0x02), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_RESETSM_CNTRL2, 0x08), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CMN_CONFIG, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SVS_MODE_CLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_HSCLK_SEL, 0x80), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DEC_START_MODE0, 0x82), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START1_MODE0, 0xab), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START2_MODE0, 0xea), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START3_MODE0, 0x02), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CP_CTRL_MODE0, 0x06), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_RCTRL_MODE0, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_CCTRL_MODE0, 0x36), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0, 0x3f), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE2_MODE0, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE1_MODE0, 0xc9), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORECLK_DIV_MODE0, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP3_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP2_MODE0, 0x34), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP1_MODE0, 0x15), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_EN, 0x04), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORE_CLK_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_CFG, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_BUF_ENABLE, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_EN_CENTER, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER1, 0x31), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER1, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER2, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE1, 0x85), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE2, 0x07), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_tx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_TX_HIGHZ_DRVR_EN, 0x10), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RCV_DETECT_LVL_2, 0x12), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_LANE_MODE_1, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX, 0x09), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX, 0x06), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_rx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4e), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4, 0x18), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_CNTRL, 0x03), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x75), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_pcs_tbl[] = { + /* FLL settings */ + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL2, 0x83), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_L, 0x09), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_H_TOL, 0xa2), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_MAN_CODE, 0x40), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL1, 0x02), + + /* Lock Det settings */ + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG1, 0xd1), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG2, 0x1f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG3, 0x47), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_POWER_STATE_CONFIG2, 0x1b), + + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0xba), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V0, 0x9f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V1, 0x9f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V2, 0xb7), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V3, 0x4e), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V4, 0x65), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_LS, 0x6b), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V0, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V1, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V1, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V2, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V2, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V3, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V3, 0x1d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V4, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V4, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_LS, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_LS, 0x0d), + + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RATE_SLEW_CNTRL, 0x02), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TSYNC_RSYNC_TIME, 0x44), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L, 0xe7), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H, 0x03), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L, 0x40), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H, 0x00), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME, 0x75), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK, 0x86), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_RUN_TIME, 0x13), +}; + /* struct qmp_phy_cfg - per-PHY initialization config */ struct qmp_phy_cfg { /* phy-type - PCIE/UFS/USB */ @@ -394,6 +521,12 @@ struct qmp_phy_cfg { /* power_down delay in usec */ int pwrdn_delay_min; int pwrdn_delay_max; + + /* true, if PHY has a separate DP_COM control block */ + bool has_phy_dp_com_ctrl; + /* Register offset of secondary tx/rx lanes for USB DP combo PHY */ + unsigned int tx_b_lane_offset; + unsigned int rx_b_lane_offset; }; /** @@ -424,6 +557,7 @@ struct qmp_phy { * * @dev: device * @serdes: iomapped memory space for phy's serdes + * @dp_com: iomapped memory space for phy's dp_com control block * * @clks: array of clocks required by phy * @resets: array of resets required by phy @@ -437,6 +571,7 @@ struct qmp_phy { struct qcom_qmp { struct device *dev; void __iomem *serdes; + void __iomem *dp_com; struct clk_bulk_data *clks; struct reset_control **resets; @@ -478,6 +613,10 @@ static const char * const msm8996_phy_clk_l[] = { "aux", "cfg_ahb", "ref", }; +static const char * const qmp_v3_phy_clk_l[] = { + "aux", "cfg_ahb", "ref", "com_aux", +}; + /* list of resets */ static const char * const msm8996_pciephy_reset_l[] = { "phy", "common", "cfg", @@ -584,6 +723,38 @@ static const struct qmp_phy_cfg ipq8074_pciephy_cfg = { .pwrdn_delay_max = 1005, /* us */ }; +static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = { + .type = PHY_TYPE_USB3, + .nlanes = 1, + + .serdes_tbl = qmp_v3_usb3_serdes_tbl, + .serdes_tbl_num = ARRAY_SIZE(qmp_v3_usb3_serdes_tbl), + .tx_tbl = qmp_v3_usb3_tx_tbl, + .tx_tbl_num = ARRAY_SIZE(qmp_v3_usb3_tx_tbl), + .rx_tbl = qmp_v3_usb3_rx_tbl, + .rx_tbl_num = ARRAY_SIZE(qmp_v3_usb3_rx_tbl), + .pcs_tbl = qmp_v3_usb3_pcs_tbl, + .pcs_tbl_num = ARRAY_SIZE(qmp_v3_usb3_pcs_tbl), + .clk_list = qmp_v3_phy_clk_l, + .num_clks = ARRAY_SIZE(qmp_v3_phy_clk_l), + .reset_list = msm8996_usb3phy_reset_l, + .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), + .vreg_list = msm8996_phy_vreg_l, + .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), + .regs = qmp_v3_usb3phy_regs_layout, + + .start_ctrl = SERDES_START | PCS_START, + .pwrdn_ctrl = SW_PWRDN, + .mask_pcs_ready = PHYSTATUS, + + .pwrdn_delay_min = POWER_DOWN_DELAY_US_MIN, + .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX, + + .has_phy_dp_com_ctrl = true, + .tx_b_lane_offset = 0x400, + .rx_b_lane_offset = 0x400, +}; + static void qcom_qmp_phy_configure(void __iomem *base, const unsigned int *regs, const struct qmp_phy_init_tbl tbl[], @@ -620,6 +791,7 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) { const struct qmp_phy_cfg *cfg = qmp->cfg; void __iomem *serdes = qmp->serdes; + void __iomem *dp_com = qmp->dp_com; int ret, i; mutex_lock(&qmp->phy_mutex); @@ -663,6 +835,23 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); + if (cfg->has_phy_dp_com_ctrl) { + qphy_setbits(dp_com, QPHY_V3_DP_COM_POWER_DOWN_CTRL, + SW_PWRDN); + /* override hardware control for reset of qmp phy */ + qphy_setbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL, + SW_DPPHY_RESET_MUX | SW_DPPHY_RESET | + SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET); + + qphy_setbits(dp_com, QPHY_V3_DP_COM_PHY_MODE_CTRL, + USB3_MODE | DP_MODE); + + /* bring both QMP USB and QMP DP PHYs PCS block out of reset */ + qphy_clrbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL, + SW_DPPHY_RESET_MUX | SW_DPPHY_RESET | + SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET); + } + /* Serdes configuration */ qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl, cfg->serdes_tbl_num); @@ -746,6 +935,7 @@ static int qcom_qmp_phy_init(struct phy *phy) void __iomem *tx = qphy->tx; void __iomem *rx = qphy->rx; void __iomem *pcs = qphy->pcs; + void __iomem *dp_com = qmp->dp_com; void __iomem *status; unsigned int mask, val; int ret; @@ -767,7 +957,16 @@ static int qcom_qmp_phy_init(struct phy *phy) /* Tx, Rx, and PCS configurations */ qcom_qmp_phy_configure(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num); + /* Configuration for other LANE for USB-DP combo PHY */ + if (cfg->has_phy_dp_com_ctrl) + qcom_qmp_phy_configure(tx + cfg->tx_b_lane_offset, cfg->regs, + cfg->tx_tbl, cfg->tx_tbl_num); + qcom_qmp_phy_configure(rx, cfg->regs, cfg->rx_tbl, cfg->rx_tbl_num); + if (cfg->has_phy_dp_com_ctrl) + qcom_qmp_phy_configure(rx + cfg->rx_b_lane_offset, cfg->regs, + cfg->rx_tbl, cfg->rx_tbl_num); + qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num); /* @@ -781,6 +980,8 @@ static int qcom_qmp_phy_init(struct phy *phy) /* Pull PHY out of reset state */ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + if (cfg->has_phy_dp_com_ctrl) + qphy_clrbits(dp_com, QPHY_V3_DP_COM_SW_RESET, SW_RESET); /* start SerDes and Phy-Coding-Sublayer */ qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); @@ -1031,6 +1232,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = { }, { .compatible = "qcom,ipq8074-qmp-pcie-phy", .data = &ipq8074_pciephy_cfg, + }, { + .compatible = "qcom,qmp-v3-usb3-phy", + .data = &qmp_v3_usb3phy_cfg, }, { }, }; @@ -1054,6 +1258,11 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) qmp->dev = dev; dev_set_drvdata(dev, qmp); + /* Get the specific init parameters of QMP phy */ + qmp->cfg = of_device_get_match_data(dev); + if (!qmp->cfg) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) @@ -1062,10 +1271,18 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) /* per PHY serdes; usually located at base address */ qmp->serdes = base; - mutex_init(&qmp->phy_mutex); + /* per PHY dp_com; if PHY has dp_com control block */ + if (qmp->cfg->has_phy_dp_com_ctrl) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "dp_com"); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); - /* Get the specific init parameters of QMP phy */ - qmp->cfg = of_device_get_match_data(dev); + qmp->dp_com = base; + } + + mutex_init(&qmp->phy_mutex); ret = qcom_qmp_phy_clk_init(dev); if (ret) -- cgit v1.2.1 From 3b3cd24ae61b3bbe9d3cecaff33e7cb3250ce47a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:09 +0530 Subject: phy: Add USB speed related PHY modes Add following USB speed related PHY modes: LS (Low Speed), FS (Full Speed), HS (High Speed), SS (Super Speed) Speed related information is required by some QCOM PHY drivers to program PHY monitor resume/remote-wakeup events in suspended state. Speed is needed in order to set correct polarity of wakeup events for detection. E.g. QUSB2 PHY monitors DP/DM line state depending on whether speed is LS or FS/HS to detect resume. Similarly QMP USB3 PHY in SS mode should monitor RX terminations attach/detach and LFPS events depending on SSPHY is active or not. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 2 ++ include/linux/phy/phy.h | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8f6e8e28996d..09ac8afb97ac 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -351,6 +351,8 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode) mutex_lock(&phy->mutex); ret = phy->ops->set_mode(phy, mode); + if (!ret) + phy->attrs.mode = mode; mutex_unlock(&phy->mutex); return ret; diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 4f8423a948d5..485469e6fa7f 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -25,7 +25,15 @@ struct phy; enum phy_mode { PHY_MODE_INVALID, PHY_MODE_USB_HOST, + PHY_MODE_USB_HOST_LS, + PHY_MODE_USB_HOST_FS, + PHY_MODE_USB_HOST_HS, + PHY_MODE_USB_HOST_SS, PHY_MODE_USB_DEVICE, + PHY_MODE_USB_DEVICE_LS, + PHY_MODE_USB_DEVICE_FS, + PHY_MODE_USB_DEVICE_HS, + PHY_MODE_USB_DEVICE_SS, PHY_MODE_USB_OTG, PHY_MODE_SGMII, PHY_MODE_10GKR, @@ -61,6 +69,7 @@ struct phy_ops { */ struct phy_attrs { u32 bus_width; + enum phy_mode mode; }; /** @@ -144,6 +153,10 @@ int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); int phy_set_mode(struct phy *phy, enum phy_mode mode); +static inline enum phy_mode phy_get_mode(struct phy *phy) +{ + return phy->attrs.mode; +} int phy_reset(struct phy *phy); int phy_calibrate(struct phy *phy); static inline int phy_get_bus_width(struct phy *phy) @@ -260,6 +273,11 @@ static inline int phy_set_mode(struct phy *phy, enum phy_mode mode) return -ENOSYS; } +static inline enum phy_mode phy_get_mode(struct phy *phy) +{ + return PHY_MODE_INVALID; +} + static inline int phy_reset(struct phy *phy) { if (!phy) -- cgit v1.2.1 From 891a96f65ac3b12883ddbc6d1a9adf6e54dc903c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:10 +0530 Subject: phy: qcom-qusb2: Add support for runtime PM Disable clocks and enable DP/DM wakeup interrupts when suspending PHY. Core driver should notify speed to PHY driver to enable appropriate DP/DM wakeup interrupts polarity in suspend state. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 176 ++++++++++++++++++++++++++++++++++ 1 file changed, 176 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 9b0d1ff89f97..f1e4a644814b 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -56,6 +56,18 @@ #define PHY_CLK_SCHEME_SEL BIT(0) +/* QUSB2PHY_INTR_CTRL register bits */ +#define DMSE_INTR_HIGH_SEL BIT(4) +#define DPSE_INTR_HIGH_SEL BIT(3) +#define CHG_DET_INTR_EN BIT(2) +#define DMSE_INTR_EN BIT(1) +#define DPSE_INTR_EN BIT(0) + +/* QUSB2PHY_PLL_CORE_INPUT_OVERRIDE register bits */ +#define CORE_PLL_EN_FROM_RESET BIT(4) +#define CORE_RESET BIT(5) +#define CORE_RESET_MUX BIT(6) + #define QUSB2PHY_PLL_ANALOG_CONTROLS_TWO 0x04 #define QUSB2PHY_PLL_CLOCK_INVERTERS 0x18c #define QUSB2PHY_PLL_CMODE 0x2c @@ -93,6 +105,7 @@ struct qusb2_phy_init_tbl { /* set of registers with offsets different per-PHY */ enum qusb2phy_reg_layout { + QUSB2PHY_PLL_CORE_INPUT_OVERRIDE, QUSB2PHY_PLL_STATUS, QUSB2PHY_PORT_TUNE1, QUSB2PHY_PORT_TUNE2, @@ -112,8 +125,10 @@ static const unsigned int msm8996_regs_layout[] = { [QUSB2PHY_PORT_TUNE3] = 0x88, [QUSB2PHY_PORT_TUNE4] = 0x8c, [QUSB2PHY_PORT_TUNE5] = 0x90, + [QUSB2PHY_PORT_TEST1] = 0xb8, [QUSB2PHY_PORT_TEST2] = 0x9c, [QUSB2PHY_PORT_POWERDOWN] = 0xb4, + [QUSB2PHY_INTR_CTRL] = 0xbc, }; static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { @@ -133,14 +148,17 @@ static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { }; static const unsigned int qusb2_v2_regs_layout[] = { + [QUSB2PHY_PLL_CORE_INPUT_OVERRIDE] = 0xa8, [QUSB2PHY_PLL_STATUS] = 0x1a0, [QUSB2PHY_PORT_TUNE1] = 0x240, [QUSB2PHY_PORT_TUNE2] = 0x244, [QUSB2PHY_PORT_TUNE3] = 0x248, [QUSB2PHY_PORT_TUNE4] = 0x24c, [QUSB2PHY_PORT_TUNE5] = 0x250, + [QUSB2PHY_PORT_TEST1] = 0x254, [QUSB2PHY_PORT_TEST2] = 0x258, [QUSB2PHY_PORT_POWERDOWN] = 0x210, + [QUSB2PHY_INTR_CTRL] = 0x230, }; static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = { @@ -175,12 +193,16 @@ struct qusb2_phy_cfg { const unsigned int *regs; unsigned int mask_core_ready; unsigned int disable_ctrl; + unsigned int autoresume_en; /* true if PHY has PLL_TEST register to select clk_scheme */ bool has_pll_test; /* true if TUNE1 register must be updated by fused value, else TUNE2 */ bool update_tune1_with_efuse; + + /* true if PHY has PLL_CORE_INPUT_OVERRIDE register to reset PLL */ + bool has_pll_override; }; static const struct qusb2_phy_cfg msm8996_phy_cfg = { @@ -191,6 +213,7 @@ static const struct qusb2_phy_cfg msm8996_phy_cfg = { .has_pll_test = true, .disable_ctrl = (CLAMP_N_EN | FREEZIO_N | POWER_DOWN), .mask_core_ready = PLL_LOCKED, + .autoresume_en = BIT(3), }; static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { @@ -201,6 +224,8 @@ static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { .disable_ctrl = (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN | POWER_DOWN), .mask_core_ready = CORE_READY_STATUS, + .has_pll_override = true, + .autoresume_en = BIT(0), }; static const char * const qusb2_phy_vreg_names[] = { @@ -226,6 +251,8 @@ static const char * const qusb2_phy_vreg_names[] = { * * @cfg: phy config data * @has_se_clk_scheme: indicate if PHY has single-ended ref clock scheme + * @phy_initialized: indicate if PHY has been initialized + * @mode: current PHY mode */ struct qusb2_phy { struct phy *phy; @@ -242,6 +269,8 @@ struct qusb2_phy { const struct qusb2_phy_cfg *cfg; bool has_se_clk_scheme; + bool phy_initialized; + enum phy_mode mode; }; static inline void qusb2_setbits(void __iomem *base, u32 offset, u32 val) @@ -317,6 +346,133 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) } +static int qusb2_phy_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + + qphy->mode = mode; + + return 0; +} + +static int __maybe_unused qusb2_phy_runtime_suspend(struct device *dev) +{ + struct qusb2_phy *qphy = dev_get_drvdata(dev); + const struct qusb2_phy_cfg *cfg = qphy->cfg; + u32 intr_mask; + + dev_vdbg(dev, "Suspending QUSB2 Phy, mode:%d\n", qphy->mode); + + if (!qphy->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + /* + * Enable DP/DM interrupts to detect line state changes based on current + * speed. In other words, enable the triggers _opposite_ of what the + * current D+/D- levels are e.g. if currently D+ high, D- low + * (HS 'J'/Suspend), configure the mask to trigger on D+ low OR D- high + */ + intr_mask = DPSE_INTR_EN | DMSE_INTR_EN; + switch (qphy->mode) { + case PHY_MODE_USB_HOST_HS: + case PHY_MODE_USB_HOST_FS: + case PHY_MODE_USB_DEVICE_HS: + case PHY_MODE_USB_DEVICE_FS: + intr_mask |= DMSE_INTR_HIGH_SEL; + break; + case PHY_MODE_USB_HOST_LS: + case PHY_MODE_USB_DEVICE_LS: + intr_mask |= DPSE_INTR_HIGH_SEL; + break; + default: + /* No device connected, enable both DP/DM high interrupt */ + intr_mask |= DMSE_INTR_HIGH_SEL; + intr_mask |= DPSE_INTR_HIGH_SEL; + break; + } + + writel(intr_mask, qphy->base + cfg->regs[QUSB2PHY_INTR_CTRL]); + + /* hold core PLL into reset */ + if (cfg->has_pll_override) { + qusb2_setbits(qphy->base, + cfg->regs[QUSB2PHY_PLL_CORE_INPUT_OVERRIDE], + CORE_PLL_EN_FROM_RESET | CORE_RESET | + CORE_RESET_MUX); + } + + /* enable phy auto-resume only if device is connected on bus */ + if (qphy->mode != PHY_MODE_INVALID) { + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TEST1], + cfg->autoresume_en); + /* Autoresume bit has to be toggled in order to enable it */ + qusb2_clrbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TEST1], + cfg->autoresume_en); + } + + if (!qphy->has_se_clk_scheme) + clk_disable_unprepare(qphy->ref_clk); + + clk_disable_unprepare(qphy->cfg_ahb_clk); + clk_disable_unprepare(qphy->iface_clk); + + return 0; +} + +static int __maybe_unused qusb2_phy_runtime_resume(struct device *dev) +{ + struct qusb2_phy *qphy = dev_get_drvdata(dev); + const struct qusb2_phy_cfg *cfg = qphy->cfg; + int ret; + + dev_vdbg(dev, "Resuming QUSB2 phy, mode:%d\n", qphy->mode); + + if (!qphy->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + ret = clk_prepare_enable(qphy->iface_clk); + if (ret) { + dev_err(dev, "failed to enable iface_clk, %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(qphy->cfg_ahb_clk); + if (ret) { + dev_err(dev, "failed to enable cfg ahb clock, %d\n", ret); + goto disable_iface_clk; + } + + if (!qphy->has_se_clk_scheme) { + clk_prepare_enable(qphy->ref_clk); + if (ret) { + dev_err(dev, "failed to enable ref clk, %d\n", ret); + goto disable_ahb_clk; + } + } + + writel(0x0, qphy->base + cfg->regs[QUSB2PHY_INTR_CTRL]); + + /* bring core PLL out of reset */ + if (cfg->has_pll_override) { + qusb2_clrbits(qphy->base, + cfg->regs[QUSB2PHY_PLL_CORE_INPUT_OVERRIDE], + CORE_RESET | CORE_RESET_MUX); + } + + return 0; + +disable_ahb_clk: + clk_disable_unprepare(qphy->cfg_ahb_clk); +disable_iface_clk: + clk_disable_unprepare(qphy->iface_clk); + + return ret; +} + static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); @@ -441,6 +597,7 @@ static int qusb2_phy_init(struct phy *phy) ret = -EBUSY; goto disable_ref_clk; } + qphy->phy_initialized = true; return 0; @@ -477,12 +634,15 @@ static int qusb2_phy_exit(struct phy *phy) regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + qphy->phy_initialized = false; + return 0; } static const struct phy_ops qusb2_phy_gen_ops = { .init = qusb2_phy_init, .exit = qusb2_phy_exit, + .set_mode = qusb2_phy_set_mode, .owner = THIS_MODULE, }; @@ -498,6 +658,11 @@ static const struct of_device_id qusb2_phy_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, qusb2_phy_of_match_table); +static const struct dev_pm_ops qusb2_phy_pm_ops = { + SET_RUNTIME_PM_OPS(qusb2_phy_runtime_suspend, + qusb2_phy_runtime_resume, NULL) +}; + static int qusb2_phy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -575,11 +740,19 @@ static int qusb2_phy_probe(struct platform_device *pdev) qphy->cell = NULL; dev_dbg(dev, "failed to lookup tune2 hstx trim value\n"); } + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + /* + * Prevent runtime pm from being ON by default. Users can enable + * it using power/control in sysfs. + */ + pm_runtime_forbid(dev); generic_phy = devm_phy_create(dev, NULL, &qusb2_phy_gen_ops); if (IS_ERR(generic_phy)) { ret = PTR_ERR(generic_phy); dev_err(dev, "failed to create phy, %d\n", ret); + pm_runtime_disable(dev); return ret; } qphy->phy = generic_phy; @@ -590,6 +763,8 @@ static int qusb2_phy_probe(struct platform_device *pdev) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QUSB2 phy\n"); + else + pm_runtime_disable(dev); return PTR_ERR_OR_ZERO(phy_provider); } @@ -598,6 +773,7 @@ static struct platform_driver qusb2_phy_driver = { .probe = qusb2_phy_probe, .driver = { .name = "qcom-qusb2-phy", + .pm = &qusb2_phy_pm_ops, .of_match_table = qusb2_phy_of_match_table, }, }; -- cgit v1.2.1 From ac0d239936bd87d044d34037a9b581ca260269e3 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:11 +0530 Subject: phy: qcom-qmp: Add support for runtime PM Disable clocks and enable PHY autonomous mode to detect wakeup events when PHY is suspended. Core driver should notify speed to PHY driver to enable LFPS and/or RX_DET interrupts. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 177 +++++++++++++++++++++++++++++++++++- drivers/phy/qualcomm/phy-qcom-qmp.h | 3 + 2 files changed, 179 insertions(+), 1 deletion(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 55b83974b531..ba6c5b2e4898 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -61,6 +61,19 @@ #define USB3_MODE BIT(0) /* enables USB3 mode */ #define DP_MODE BIT(1) /* enables DP mode */ +/* QPHY_PCS_AUTONOMOUS_MODE_CTRL register bits */ +#define ARCVR_DTCT_EN BIT(0) +#define ALFPS_DTCT_EN BIT(1) +#define ARCVR_DTCT_EVENT_SEL BIT(4) + +/* QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR register bits */ +#define IRQ_CLEAR BIT(0) + +/* QPHY_PCS_LFPS_RXTERM_IRQ_STATUS register bits */ +#define RCVR_DETECT BIT(0) + +/* QPHY_V3_PCS_MISC_CLAMP_ENABLE register bits */ +#define CLAMP_EN BIT(0) /* enables i/o clamp_n */ #define PHY_INIT_COMPLETE_TIMEOUT 1000 #define POWER_DOWN_DELAY_US_MIN 10 @@ -108,6 +121,9 @@ enum qphy_reg_layout { QPHY_SW_RESET, QPHY_START_CTRL, QPHY_PCS_READY_STATUS, + QPHY_PCS_AUTONOMOUS_MODE_CTRL, + QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR, + QPHY_PCS_LFPS_RXTERM_IRQ_STATUS, }; static const unsigned int pciephy_regs_layout[] = { @@ -135,12 +151,18 @@ static const unsigned int usb3phy_regs_layout[] = { [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x17c, + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0x0d4, + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x0d8, + [QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x178, }; static const unsigned int qmp_v3_usb3phy_regs_layout[] = { [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x174, + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0x0d8, + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x0dc, + [QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x170, }; static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { @@ -536,6 +558,7 @@ struct qmp_phy_cfg { * @tx: iomapped memory space for lane's tx * @rx: iomapped memory space for lane's rx * @pcs: iomapped memory space for lane's pcs + * @pcs_misc: iomapped memory space for lane's pcs_misc * @pipe_clk: pipe lock * @index: lane index * @qmp: QMP phy to which this lane belongs @@ -546,6 +569,7 @@ struct qmp_phy { void __iomem *tx; void __iomem *rx; void __iomem *pcs; + void __iomem *pcs_misc; struct clk *pipe_clk; unsigned int index; struct qcom_qmp *qmp; @@ -567,6 +591,8 @@ struct qmp_phy { * @phys: array of per-lane phy descriptors * @phy_mutex: mutex lock for PHY common block initialization * @init_count: phy common block initialization count + * @phy_initialized: indicate if PHY has been initialized + * @mode: current PHY mode */ struct qcom_qmp { struct device *dev; @@ -582,6 +608,8 @@ struct qcom_qmp { struct mutex phy_mutex; int init_count; + bool phy_initialized; + enum phy_mode mode; }; static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val) @@ -995,6 +1023,7 @@ static int qcom_qmp_phy_init(struct phy *phy) dev_err(qmp->dev, "phy initialization timed-out\n"); goto err_pcs_ready; } + qmp->phy_initialized = true; return ret; @@ -1029,6 +1058,128 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); + qmp->phy_initialized = false; + + return 0; +} + +static int qcom_qmp_phy_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + + qmp->mode = mode; + + return 0; +} + +static void qcom_qmp_phy_enable_autonomous_mode(struct qmp_phy *qphy) +{ + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *pcs = qphy->pcs; + void __iomem *pcs_misc = qphy->pcs_misc; + u32 intr_mask; + + if (qmp->mode == PHY_MODE_USB_HOST_SS || + qmp->mode == PHY_MODE_USB_DEVICE_SS) + intr_mask = ARCVR_DTCT_EN | ALFPS_DTCT_EN; + else + intr_mask = ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL; + + /* Clear any pending interrupts status */ + qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + /* Writing 1 followed by 0 clears the interrupt */ + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], + ARCVR_DTCT_EN | ALFPS_DTCT_EN | ARCVR_DTCT_EVENT_SEL); + + /* Enable required PHY autonomous mode interrupts */ + qphy_setbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], intr_mask); + + /* Enable i/o clamp_n for autonomous mode */ + if (pcs_misc) + qphy_clrbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN); +} + +static void qcom_qmp_phy_disable_autonomous_mode(struct qmp_phy *qphy) +{ + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *pcs = qphy->pcs; + void __iomem *pcs_misc = qphy->pcs_misc; + + /* Disable i/o clamp_n on resume for normal mode */ + if (pcs_misc) + qphy_setbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN); + + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], + ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL | ALFPS_DTCT_EN); + + qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + /* Writing 1 followed by 0 clears the interrupt */ + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); +} + +static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + struct qmp_phy *qphy = qmp->phys[0]; + const struct qmp_phy_cfg *cfg = qmp->cfg; + + dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode); + + /* Supported only for USB3 PHY */ + if (cfg->type != PHY_TYPE_USB3) + return 0; + + if (!qmp->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + qcom_qmp_phy_enable_autonomous_mode(qphy); + + clk_disable_unprepare(qphy->pipe_clk); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + + return 0; +} + +static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + struct qmp_phy *qphy = qmp->phys[0]; + const struct qmp_phy_cfg *cfg = qmp->cfg; + int ret = 0; + + dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode); + + /* Supported only for USB3 PHY */ + if (cfg->type != PHY_TYPE_USB3) + return 0; + + if (!qmp->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + return ret; + } + + ret = clk_prepare_enable(qphy->pipe_clk); + if (ret) { + dev_err(dev, "pipe_clk enable failed, err=%d\n", ret); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + return ret; + } + + qcom_qmp_phy_disable_autonomous_mode(qphy); + return 0; } @@ -1142,6 +1293,7 @@ static const struct phy_ops qcom_qmp_phy_gen_ops = { .init = qcom_qmp_phy_init, .exit = qcom_qmp_phy_exit, .power_on = qcom_qmp_phy_poweron, + .set_mode = qcom_qmp_phy_set_mode, .owner = THIS_MODULE, }; @@ -1160,7 +1312,8 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) /* * Get memory resources for each phy lane: - * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2. + * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2; and + * pcs_misc (optional) -> 3. */ qphy->tx = of_iomap(np, 0); if (!qphy->tx) @@ -1174,6 +1327,10 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) if (!qphy->pcs) return -ENOMEM; + qphy->pcs_misc = of_iomap(np, 3); + if (!qphy->pcs_misc) + dev_vdbg(dev, "PHY pcs_misc-reg not used\n"); + /* * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3 * based phys, so they essentially have pipe clock. So, @@ -1240,6 +1397,11 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table); +static const struct dev_pm_ops qcom_qmp_phy_pm_ops = { + SET_RUNTIME_PM_OPS(qcom_qmp_phy_runtime_suspend, + qcom_qmp_phy_runtime_resume, NULL) +}; + static int qcom_qmp_phy_probe(struct platform_device *pdev) { struct qcom_qmp *qmp; @@ -1308,12 +1470,21 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) return -ENOMEM; id = 0; + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + /* + * Prevent runtime pm from being ON by default. Users can enable + * it using power/control in sysfs. + */ + pm_runtime_forbid(dev); + for_each_available_child_of_node(dev->of_node, child) { /* Create per-lane phy */ ret = qcom_qmp_phy_create(dev, child, id); if (ret) { dev_err(dev, "failed to create lane%d phy, %d\n", id, ret); + pm_runtime_disable(dev); return ret; } @@ -1325,6 +1496,7 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) if (ret) { dev_err(qmp->dev, "failed to register pipe clock source\n"); + pm_runtime_disable(dev); return ret; } id++; @@ -1333,6 +1505,8 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QMP phy\n"); + else + pm_runtime_disable(dev); return PTR_ERR_OR_ZERO(phy_provider); } @@ -1341,6 +1515,7 @@ static struct platform_driver qcom_qmp_phy_driver = { .probe = qcom_qmp_phy_probe, .driver = { .name = "qcom-qmp-phy", + .pm = &qcom_qmp_phy_pm_ops, .of_match_table = qcom_qmp_phy_of_match_table, }, }; diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h index 944269a62761..d1c6905d0439 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.h +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -274,4 +274,7 @@ #define QPHY_V3_PCS_FLL_MAN_CODE 0x0d4 #define QPHY_V3_PCS_RX_SIGDET_LVL 0x1d8 +/* Only for QMP V3 PHY - PCS_MISC registers */ +#define QPHY_V3_PCS_MISC_CLAMP_ENABLE 0x0c + #endif -- cgit v1.2.1 From 3405bd71015e87ec255f968dc9a510785ff5e0ee Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:12 +0530 Subject: phy: add SPDX identifier to QMP and QUSB2 PHY drivers The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 11 +---------- drivers/phy/qualcomm/phy-qcom-qusb2.c | 10 +--------- 2 files changed, 2 insertions(+), 19 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index ba6c5b2e4898..6470c5d61d1c 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -1,15 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2017, The Linux Foundation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index f1e4a644814b..94afeac1a19e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2017, The Linux Foundation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include -- cgit v1.2.1 From fee7e1d50c6e6da1d99035181ba5a5c88f5bb526 Mon Sep 17 00:00:00 2001 From: Ulf Magnusson Date: Mon, 5 Feb 2018 02:21:27 +0100 Subject: phy: Remove SOC_EXYNOS4212 dep. from PHY_EXYNOS4X12_USB Exynos4212 support was removed by commit bca9085e0ae9 ("ARM: dts: exynos: remove Exynos4212 support (dead code)"). Remove the SOC_EXYNOS4212 dependency from PHY_EXYNOS4X12_USB. Discovered with the https://github.com/ulfalizer/Kconfiglib/blob/master/examples/list_undefined.py script. Signed-off-by: Ulf Magnusson Acked-by: Krzysztof Kozlowski Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/samsung/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/samsung/Kconfig b/drivers/phy/samsung/Kconfig index b7e0645a7bd9..2a5d33cb0e7e 100644 --- a/drivers/phy/samsung/Kconfig +++ b/drivers/phy/samsung/Kconfig @@ -49,7 +49,7 @@ config PHY_EXYNOS4210_USB2 config PHY_EXYNOS4X12_USB2 bool depends on PHY_SAMSUNG_USB2 - default SOC_EXYNOS3250 || SOC_EXYNOS4212 || SOC_EXYNOS4412 + default SOC_EXYNOS3250 || SOC_EXYNOS4412 config PHY_EXYNOS5250_USB2 bool -- cgit v1.2.1 From a4781c2a74b249cad814ceea7272997bbd20051e Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 11 Jan 2018 10:40:26 +0800 Subject: phy: rockchip-emmc: retry calpad busy trimming It turns out that 5us isn't enough for all cases, so let's retry some more times to wait for caldone. Signed-off-by: Shawn Lin Tested-by: Ziyuan Xu Signed-off-by: Caesar Wang Reviewed-by: Douglas Anderson Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-emmc.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-emmc.c b/drivers/phy/rockchip/phy-rockchip-emmc.c index f1b24f18e9b2..b0d10934413f 100644 --- a/drivers/phy/rockchip/phy-rockchip-emmc.c +++ b/drivers/phy/rockchip/phy-rockchip-emmc.c @@ -76,6 +76,10 @@ #define PHYCTRL_OTAPDLYSEL_MASK 0xf #define PHYCTRL_OTAPDLYSEL_SHIFT 0x7 +#define PHYCTRL_IS_CALDONE(x) \ + ((((x) >> PHYCTRL_CALDONE_SHIFT) & \ + PHYCTRL_CALDONE_MASK) == PHYCTRL_CALDONE_DONE) + struct rockchip_emmc_phy { unsigned int reg_offset; struct regmap *reg_base; @@ -90,6 +94,7 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) unsigned int freqsel = PHYCTRL_FREQSEL_200M; unsigned long rate; unsigned long timeout; + int ret; /* * Keep phyctrl_pdb and phyctrl_endll low to allow @@ -160,17 +165,19 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) PHYCTRL_PDB_SHIFT)); /* - * According to the user manual, it asks driver to - * wait 5us for calpad busy trimming + * According to the user manual, it asks driver to wait 5us for + * calpad busy trimming. However it is documented that this value is + * PVT(A.K.A process,voltage and temperature) relevant, so some + * failure cases are found which indicates we should be more tolerant + * to calpad busy trimming. */ - udelay(5); - regmap_read(rk_phy->reg_base, - rk_phy->reg_offset + GRF_EMMCPHY_STATUS, - &caldone); - caldone = (caldone >> PHYCTRL_CALDONE_SHIFT) & PHYCTRL_CALDONE_MASK; - if (caldone != PHYCTRL_CALDONE_DONE) { - pr_err("rockchip_emmc_phy_power: caldone timeout.\n"); - return -ETIMEDOUT; + ret = regmap_read_poll_timeout(rk_phy->reg_base, + rk_phy->reg_offset + GRF_EMMCPHY_STATUS, + caldone, PHYCTRL_IS_CALDONE(caldone), + 0, 50); + if (ret) { + pr_err("%s: caldone failed, ret=%d\n", __func__, ret); + return ret; } /* Set the frequency of the DLL operation */ -- cgit v1.2.1 From 95cc6e7217963bdd58f5ff737a574bea1c6f170b Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 11 Jan 2018 10:40:27 +0800 Subject: phy: rockchip-emmc: use regmap_read_poll_timeout to poll dllrdy Just use the API instead of open-coding it, no functional change intended. Signed-off-by: Shawn Lin Reviewed-by: Brian Norris Signed-off-by: Caesar Wang Reviewed-by: Douglas Anderson Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-emmc.c | 33 +++++++++++--------------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-emmc.c b/drivers/phy/rockchip/phy-rockchip-emmc.c index b0d10934413f..b237360f95f6 100644 --- a/drivers/phy/rockchip/phy-rockchip-emmc.c +++ b/drivers/phy/rockchip/phy-rockchip-emmc.c @@ -79,6 +79,9 @@ #define PHYCTRL_IS_CALDONE(x) \ ((((x) >> PHYCTRL_CALDONE_SHIFT) & \ PHYCTRL_CALDONE_MASK) == PHYCTRL_CALDONE_DONE) +#define PHYCTRL_IS_DLLRDY(x) \ + ((((x) >> PHYCTRL_DLLRDY_SHIFT) & \ + PHYCTRL_DLLRDY_MASK) == PHYCTRL_DLLRDY_DONE) struct rockchip_emmc_phy { unsigned int reg_offset; @@ -93,7 +96,6 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) unsigned int dllrdy; unsigned int freqsel = PHYCTRL_FREQSEL_200M; unsigned long rate; - unsigned long timeout; int ret; /* @@ -217,28 +219,15 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) * NOTE: There appear to be corner cases where the DLL seems to take * extra long to lock for reasons that aren't understood. In some * extreme cases we've seen it take up to over 10ms (!). We'll be - * generous and give it 50ms. We still busy wait here because: - * - In most cases it should be super fast. - * - This is not called lots during normal operation so it shouldn't - * be a power or performance problem to busy wait. We expect it - * only at boot / resume. In both cases, eMMC is probably on the - * critical path so busy waiting a little extra time should be OK. + * generous and give it 50ms. */ - timeout = jiffies + msecs_to_jiffies(50); - do { - udelay(1); - - regmap_read(rk_phy->reg_base, - rk_phy->reg_offset + GRF_EMMCPHY_STATUS, - &dllrdy); - dllrdy = (dllrdy >> PHYCTRL_DLLRDY_SHIFT) & PHYCTRL_DLLRDY_MASK; - if (dllrdy == PHYCTRL_DLLRDY_DONE) - break; - } while (!time_after(jiffies, timeout)); - - if (dllrdy != PHYCTRL_DLLRDY_DONE) { - pr_err("rockchip_emmc_phy_power: dllrdy timeout.\n"); - return -ETIMEDOUT; + ret = regmap_read_poll_timeout(rk_phy->reg_base, + rk_phy->reg_offset + GRF_EMMCPHY_STATUS, + dllrdy, PHYCTRL_IS_DLLRDY(dllrdy), + 0, 50 * USEC_PER_MSEC); + if (ret) { + pr_err("%s: dllrdy failed. ret=%d\n", __func__, ret); + return ret; } return 0; -- cgit v1.2.1 From becaf17a58473e358e056ada2642e895aae93b0e Mon Sep 17 00:00:00 2001 From: Dov Levenglick Date: Fri, 2 Feb 2018 18:34:50 +0200 Subject: phy: fix structure documentation Add missing documentation of structure members and modify the order of documentation to match that of the structure declaration. Signed-off-by: Dov Levenglick Signed-off-by: Kishon Vijay Abraham I --- include/linux/phy/phy.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 485469e6fa7f..c9d14eeee7f5 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -81,7 +81,8 @@ struct phy_attrs { * @mutex: mutex to protect phy_ops * @init_count: used to protect when the PHY is used by multiple consumers * @power_count: used to protect when the PHY is used by multiple consumers - * @phy_attrs: used to specify PHY specific attributes + * @attrs: used to specify PHY specific attributes + * @pwr: power regulator associated with the phy */ struct phy { struct device dev; @@ -97,9 +98,10 @@ struct phy { /** * struct phy_provider - represents the phy provider * @dev: phy provider device + * @children: can be used to override the default (dev->of_node) child node * @owner: the module owner having of_xlate - * @of_xlate: function pointer to obtain phy instance from phy pointer * @list: to maintain a linked list of PHY providers + * @of_xlate: function pointer to obtain phy instance from phy pointer */ struct phy_provider { struct device *dev; @@ -110,6 +112,13 @@ struct phy_provider { struct of_phandle_args *args); }; +/** + * struct phy_lookup - PHY association in list of phys managed by the phy driver + * @node: list node + * @dev_id: the device of the association + * @con_id: connection ID string on device + * @phy: the phy of the association + */ struct phy_lookup { struct list_head node; const char *dev_id; -- cgit v1.2.1 From d2eced94562f9d69705887e497fee0d17c3099eb Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:41 +0100 Subject: dt-bindings: phy: meson-gxl-usb2-phy: add the reset line and clock The OTG capable USB2 PHY has a reset line (which is shared with other components, such as the USB3 PHY for example) and a clock (which are both part of different registers). Add the properties for the reset line and clocks as optional ones since not all PHYs have them (currently only the OTG capable PHY is known to use these). Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt b/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt index a105494a0fc9..b84a02ebffdf 100644 --- a/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt +++ b/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt @@ -6,6 +6,10 @@ Required properties: - #phys-cells: must be 0 (see phy-bindings.txt in this directory) Optional properties: +- clocks: a phandle to the clock of this PHY +- clock-names: must be "phy" +- resets: a phandle to the reset line of this PHY +- reset-names: must be "phy" - phy-supply: see phy-bindings.txt in this directory -- cgit v1.2.1 From cba1372812fbc740e57c1982970210ab2b804226 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:44 +0100 Subject: phy: amlogic: phy-meson-gxl-usb2: don't log an error on -EPROBE_DEFER devm_phy_create can return -EPROBE_DEFER if the phy-supply is not ready yet. Silence this warning as the driver framework will re-attempt registering the PHY - this second try works without any errors. So only log actual errors to keep the kernel log free of misleading error messages. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index e90c4ee25dfe..d68c30d3b510 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -210,6 +210,7 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) struct phy_meson_gxl_usb2_priv *priv; struct phy *phy; void __iomem *base; + int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -242,8 +243,11 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops); if (IS_ERR(phy)) { - dev_err(dev, "failed to create PHY\n"); - return PTR_ERR(phy); + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to create PHY\n"); + + return ret; } phy_set_drvdata(phy, priv); -- cgit v1.2.1 From bc4a0241d4e1e2381f4c3b53ad0199324549e0a8 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:42 +0100 Subject: phy: amlogic: phy-meson-gxl-usb2: support the clock and reset line The Meson GXL USB2 PHYs require an additional clock (USB) which has to be enabled. If that clock is disabled then all PHY registers read 0x0. Luckily for us that clock is always enabled (either by harddware defaults, the bootrom, or any of the bootloaders before u-boot/BL3-3). The OTG capable USB2 PHY additionally has a reset line (USB_OTG, which is shared with other components, such as the USB3 PHY for example). Extend the driver so it handles this clock and the shared reset line. We only trigger the reset during the .init phase since it's a shared reset line, so triggering it during the driver's .reset implementation would effectively also only trigger it once anyways. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 44 ++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index d68c30d3b510..a92a3fd51e16 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -11,11 +11,13 @@ * along with this program. If not, see . */ +#include #include #include #include #include #include +#include #include #include #include @@ -99,6 +101,8 @@ struct phy_meson_gxl_usb2_priv { struct regmap *regmap; enum phy_mode mode; int is_enabled; + struct clk *clk; + struct reset_control *reset; }; static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { @@ -108,6 +112,31 @@ static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { .max_register = U2P_R3, }; +static int phy_meson_gxl_usb2_init(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = reset_control_reset(priv->reset); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk); + if (ret) + return ret; + + return 0; +} + +static int phy_meson_gxl_usb2_exit(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + + clk_disable_unprepare(priv->clk); + + return 0; +} + static int phy_meson_gxl_usb2_reset(struct phy *phy) { struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); @@ -195,6 +224,8 @@ static int phy_meson_gxl_usb2_power_on(struct phy *phy) } static const struct phy_ops phy_meson_gxl_usb2_ops = { + .init = phy_meson_gxl_usb2_init, + .exit = phy_meson_gxl_usb2_exit, .power_on = phy_meson_gxl_usb2_power_on, .power_off = phy_meson_gxl_usb2_power_off, .set_mode = phy_meson_gxl_usb2_set_mode, @@ -241,6 +272,19 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); + priv->clk = devm_clk_get(dev, "phy"); + if (IS_ERR(priv->clk)) { + ret = PTR_ERR(priv->clk); + if (ret == -ENOENT) + priv->clk = NULL; + else + return ret; + } + + priv->reset = devm_reset_control_get_optional_shared(dev, "phy"); + if (IS_ERR(priv->reset)) + return PTR_ERR(priv->reset); + phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops); if (IS_ERR(phy)) { ret = PTR_ERR(phy); -- cgit v1.2.1 From 05818862bc27255e335ee6085d6ce57b6cb01f99 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:43 +0100 Subject: phy: amlogic: phy-meson-gxl-usb2: default to host mode The USB2 PHY can switch between PHY_MODE_USB_HOST and PHY_MODE_USB_DEVICE. However, it cannot do it on it's own since it requires re-routing of the corresponding USB pins from dwc3 (which is used for host-mode) to dwc2 (which is used for device-mode). Thus we don't need to auto-detect the mode based on the USB controller, which simplifies the driver code. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/Kconfig | 1 - drivers/phy/amlogic/phy-meson-gxl-usb2.c | 15 ++------------- 2 files changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index cb8f4501652b..ef3625cd25bb 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -18,7 +18,6 @@ config PHY_MESON_GXL_USB2 default ARCH_MESON depends on OF && (ARCH_MESON || COMPILE_TEST) depends on USB_SUPPORT - select USB_COMMON select GENERIC_PHY select REGMAP_MMIO help diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index a92a3fd51e16..f062fc7f0a3a 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -20,7 +20,6 @@ #include #include #include -#include /* bits [31:27] are read-only */ #define U2P_R0 0x0 @@ -254,18 +253,8 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); - switch (of_usb_get_dr_mode_by_phy(dev->of_node, -1)) { - case USB_DR_MODE_PERIPHERAL: - priv->mode = PHY_MODE_USB_DEVICE; - break; - case USB_DR_MODE_OTG: - priv->mode = PHY_MODE_USB_OTG; - break; - case USB_DR_MODE_HOST: - default: - priv->mode = PHY_MODE_USB_HOST; - break; - } + /* start in host mode */ + priv->mode = PHY_MODE_USB_HOST; priv->regmap = devm_regmap_init_mmio(dev, base, &phy_meson_gxl_usb2_regmap_conf); -- cgit v1.2.1 From ae91a799fb3cbc6e07718da97b40eb75f782dbaf Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:45 +0100 Subject: phy: amlogic: phy-meson-gxl-usb2: rename some of the U2P_R2 registers The U2P_R2 register provides "test mode" functionality for bits 17:0. These are only used during SoC development and should be left untouched on production SoC versions. Rename these register definitions to indicate that these are for "test mode" only. While here, also merge the definitions for U2P_R2_DATA_IN_MASK and U2P_R2_DATA_IN_EN_MASK (bits 0:7) because Amlogic's internal documentation suggests that these bits belong together. The old definition was not taken from the documentation but rather from a struct definition in the Amlogic GPL kernel sources. No functional changes. Suggested-by: Yixun Lan Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index f062fc7f0a3a..9f9b5414b97a 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -71,12 +71,11 @@ /* bits [31:14] are read-only */ #define U2P_R2 0x8 - #define U2P_R2_DATA_IN_MASK GENMASK(3, 0) - #define U2P_R2_DATA_IN_EN_MASK GENMASK(7, 4) - #define U2P_R2_ADDR_MASK GENMASK(11, 8) - #define U2P_R2_DATA_OUT_SEL BIT(12) - #define U2P_R2_CLK BIT(13) - #define U2P_R2_DATA_OUT_MASK GENMASK(17, 14) + #define U2P_R2_TESTDATA_IN_MASK GENMASK(7, 0) + #define U2P_R2_TESTADDR_MASK GENMASK(11, 8) + #define U2P_R2_TESTDATA_OUT_SEL BIT(12) + #define U2P_R2_TESTCLK BIT(13) + #define U2P_R2_TESTDATA_OUT_MASK GENMASK(17, 14) #define U2P_R2_ACA_PIN_RANGE_C BIT(18) #define U2P_R2_ACA_PIN_RANGE_B BIT(19) #define U2P_R2_ACA_PIN_RANGE_A BIT(20) -- cgit v1.2.1 From ec082f7021bf66ccd3028fe48b59a669730cf76d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:18 +0200 Subject: USB: dwc2: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: John Youn Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/debugfs.c | 84 ++++------------------------------------------ 1 file changed, 6 insertions(+), 78 deletions(-) diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index f4650a88be78..5e0d7f2bd2af 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -170,19 +170,7 @@ static int state_show(struct seq_file *seq, void *v) return 0; } - -static int state_open(struct inode *inode, struct file *file) -{ - return single_open(file, state_show, inode->i_private); -} - -static const struct file_operations state_fops = { - .owner = THIS_MODULE, - .open = state_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(state); /** * fifo_show - debugfs: show the fifo information @@ -219,19 +207,7 @@ static int fifo_show(struct seq_file *seq, void *v) return 0; } - -static int fifo_open(struct inode *inode, struct file *file) -{ - return single_open(file, fifo_show, inode->i_private); -} - -static const struct file_operations fifo_fops = { - .owner = THIS_MODULE, - .open = fifo_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(fifo); static const char *decode_direction(int is_in) { @@ -303,19 +279,7 @@ static int ep_show(struct seq_file *seq, void *v) return 0; } - -static int ep_open(struct inode *inode, struct file *file) -{ - return single_open(file, ep_show, inode->i_private); -} - -static const struct file_operations ep_fops = { - .owner = THIS_MODULE, - .open = ep_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ep); /** * dwc2_hsotg_create_debug - create debugfs directory and files @@ -770,19 +734,7 @@ static int params_show(struct seq_file *seq, void *v) return 0; } - -static int params_open(struct inode *inode, struct file *file) -{ - return single_open(file, params_show, inode->i_private); -} - -static const struct file_operations params_fops = { - .owner = THIS_MODULE, - .open = params_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(params); static int hw_params_show(struct seq_file *seq, void *v) { @@ -817,19 +769,7 @@ static int hw_params_show(struct seq_file *seq, void *v) return 0; } - -static int hw_params_open(struct inode *inode, struct file *file) -{ - return single_open(file, hw_params_show, inode->i_private); -} - -static const struct file_operations hw_params_fops = { - .owner = THIS_MODULE, - .open = hw_params_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(hw_params); static int dr_mode_show(struct seq_file *seq, void *v) { @@ -840,19 +780,7 @@ static int dr_mode_show(struct seq_file *seq, void *v) seq_printf(seq, "%s\n", dr_mode); return 0; } - -static int dr_mode_open(struct inode *inode, struct file *file) -{ - return single_open(file, dr_mode_show, inode->i_private); -} - -static const struct file_operations dr_mode_fops = { - .owner = THIS_MODULE, - .open = dr_mode_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(dr_mode); int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) { -- cgit v1.2.1 From 8802559e9372fb2fdc47abf35c97b460316b4d67 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:20 +0200 Subject: USB: gadget: bcm63xx: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Kevin Cernekee Cc: Florian Fainelli Cc: bcm-kernel-feedback-list@broadcom.com Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/bcm63xx_udc.c | 33 ++++----------------------------- 1 file changed, 4 insertions(+), 29 deletions(-) diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c index 465ccd1104de..3a8df8601074 100644 --- a/drivers/usb/gadget/udc/bcm63xx_udc.c +++ b/drivers/usb/gadget/udc/bcm63xx_udc.c @@ -2158,6 +2158,7 @@ static int bcm63xx_usbd_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(bcm63xx_usbd_dbg); /* * bcm63xx_iudma_dbg_show - Show IUDMA status and descriptors. @@ -2238,33 +2239,7 @@ static int bcm63xx_iudma_dbg_show(struct seq_file *s, void *p) return 0; } - -static int bcm63xx_usbd_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, bcm63xx_usbd_dbg_show, inode->i_private); -} - -static int bcm63xx_iudma_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, bcm63xx_iudma_dbg_show, inode->i_private); -} - -static const struct file_operations usbd_dbg_fops = { - .owner = THIS_MODULE, - .open = bcm63xx_usbd_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations iudma_dbg_fops = { - .owner = THIS_MODULE, - .open = bcm63xx_iudma_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - +DEFINE_SHOW_ATTRIBUTE(bcm63xx_iudma_dbg); /** * bcm63xx_udc_init_debugfs - Create debugfs entries. @@ -2282,11 +2257,11 @@ static void bcm63xx_udc_init_debugfs(struct bcm63xx_udc *udc) goto err_root; usbd = debugfs_create_file("usbd", 0400, root, udc, - &usbd_dbg_fops); + &bcm63xx_usbd_dbg_fops); if (!usbd) goto err_usbd; iudma = debugfs_create_file("iudma", 0400, root, udc, - &iudma_dbg_fops); + &bcm63xx_iudma_dbg_fops); if (!iudma) goto err_iudma; -- cgit v1.2.1 From 688d4ca31796f53934d326363f667e897216e91d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:21 +0200 Subject: USB: gadget: gr: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/gr_udc.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c index b3fb1bbdb854..ca83c15d8ea4 100644 --- a/drivers/usb/gadget/udc/gr_udc.c +++ b/drivers/usb/gadget/udc/gr_udc.c @@ -179,8 +179,7 @@ static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) seq_puts(seq, "\n"); } - -static int gr_seq_show(struct seq_file *seq, void *v) +static int gr_dfs_show(struct seq_file *seq, void *v) { struct gr_udc *dev = seq->private; u32 control = gr_read32(&dev->regs->control); @@ -203,19 +202,7 @@ static int gr_seq_show(struct seq_file *seq, void *v) return 0; } - -static int gr_dfs_open(struct inode *inode, struct file *file) -{ - return single_open(file, gr_seq_show, inode->i_private); -} - -static const struct file_operations gr_dfs_fops = { - .owner = THIS_MODULE, - .open = gr_dfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(gr_dfs); static void gr_dfs_create(struct gr_udc *dev) { -- cgit v1.2.1 From 5aaa036b18709157270f762c929a70494ad09828 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:22 +0200 Subject: USB: gadget: pxa25x: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Daniel Mack Cc: Haojian Zhuang Cc: Robert Jarzmik Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/pxa25x_udc.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c index 0e3f5faa000e..d4be53559f2e 100644 --- a/drivers/usb/gadget/udc/pxa25x_udc.c +++ b/drivers/usb/gadget/udc/pxa25x_udc.c @@ -1233,8 +1233,7 @@ static const struct usb_gadget_ops pxa25x_udc_ops = { #ifdef CONFIG_USB_GADGET_DEBUG_FS -static int -udc_seq_show(struct seq_file *m, void *_d) +static int udc_debug_show(struct seq_file *m, void *_d) { struct pxa25x_udc *dev = m->private; unsigned long flags; @@ -1335,25 +1334,12 @@ done: local_irq_restore(flags); return 0; } - -static int -udc_debugfs_open(struct inode *inode, struct file *file) -{ - return single_open(file, udc_seq_show, inode->i_private); -} - -static const struct file_operations debug_fops = { - .open = udc_debugfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; +DEFINE_SHOW_ATTRIBUTE(udc_debug); #define create_debug_files(dev) \ do { \ dev->debugfs_udc = debugfs_create_file(dev->gadget.name, \ - S_IRUGO, NULL, dev, &debug_fops); \ + S_IRUGO, NULL, dev, &udc_debug_fops); \ } while (0) #define remove_debug_files(dev) debugfs_remove(dev->debugfs_udc) -- cgit v1.2.1 From 2247276989a16f84fc00930b407ab648b0b52cf6 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:23 +0200 Subject: USB: gadget: pxa27x: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Daniel Mack Cc: Haojian Zhuang Cc: Robert Jarzmik Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/pxa27x_udc.c | 42 +++---------------------------------- 1 file changed, 3 insertions(+), 39 deletions(-) diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index fadcf2653c3d..a58242e901df 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -131,6 +131,7 @@ static int state_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(state_dbg); static int queues_dbg_show(struct seq_file *s, void *p) { @@ -163,6 +164,7 @@ static int queues_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(queues_dbg); static int eps_dbg_show(struct seq_file *s, void *p) { @@ -199,45 +201,7 @@ static int eps_dbg_show(struct seq_file *s, void *p) return 0; } - -static int eps_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, eps_dbg_show, inode->i_private); -} - -static int queues_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, queues_dbg_show, inode->i_private); -} - -static int state_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, state_dbg_show, inode->i_private); -} - -static const struct file_operations state_dbg_fops = { - .owner = THIS_MODULE, - .open = state_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations queues_dbg_fops = { - .owner = THIS_MODULE, - .open = queues_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations eps_dbg_fops = { - .owner = THIS_MODULE, - .open = eps_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(eps_dbg); static void pxa_init_debugfs(struct pxa_udc *udc) { -- cgit v1.2.1 From 6d5b53c1fd5c3d57c92667c8ff644557bcdb9656 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 15 Feb 2018 13:03:38 +0200 Subject: usb: dwc3: debugfs: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Reviewed-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debugfs.c | 79 ++++++++++++++++++---------------------------- 1 file changed, 30 insertions(+), 49 deletions(-) diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 00e65530c81e..c4c0dcb3f589 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -487,8 +487,8 @@ static const struct file_operations dwc3_link_state_fops = { }; struct dwc3_ep_file_map { - char name[25]; - int (*show)(struct seq_file *s, void *unused); + const char name[25]; + const struct file_operations *const fops; }; static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused) @@ -596,7 +596,7 @@ static int dwc3_event_queue_show(struct seq_file *s, void *unused) return 0; } -static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused) +static int dwc3_transfer_type_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; @@ -632,7 +632,7 @@ out: return 0; } -static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) +static int dwc3_trb_ring_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; @@ -670,58 +670,39 @@ out: return 0; } -static struct dwc3_ep_file_map map[] = { - { "tx_fifo_queue", dwc3_tx_fifo_queue_show, }, - { "rx_fifo_queue", dwc3_rx_fifo_queue_show, }, - { "tx_request_queue", dwc3_tx_request_queue_show, }, - { "rx_request_queue", dwc3_rx_request_queue_show, }, - { "rx_info_queue", dwc3_rx_info_queue_show, }, - { "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, }, - { "event_queue", dwc3_event_queue_show, }, - { "transfer_type", dwc3_ep_transfer_type_show, }, - { "trb_ring", dwc3_ep_trb_ring_show, }, +DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); +DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); + +static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { + { "tx_fifo_queue", &dwc3_tx_fifo_queue_fops, }, + { "rx_fifo_queue", &dwc3_rx_fifo_queue_fops, }, + { "tx_request_queue", &dwc3_tx_request_queue_fops, }, + { "rx_request_queue", &dwc3_rx_request_queue_fops, }, + { "rx_info_queue", &dwc3_rx_info_queue_fops, }, + { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, }, + { "event_queue", &dwc3_event_queue_fops, }, + { "transfer_type", &dwc3_transfer_type_fops, }, + { "trb_ring", &dwc3_trb_ring_fops, }, }; -static int dwc3_endpoint_open(struct inode *inode, struct file *file) -{ - const char *file_name = file_dentry(file)->d_iname; - struct dwc3_ep_file_map *f_map; - int i; - - for (i = 0; i < ARRAY_SIZE(map); i++) { - f_map = &map[i]; - - if (strcmp(f_map->name, file_name) == 0) - break; - } - - return single_open(file, f_map->show, inode->i_private); -} - -static const struct file_operations dwc3_endpoint_fops = { - .open = dwc3_endpoint_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep, - struct dentry *parent, int type) -{ - struct dentry *file; - struct dwc3_ep_file_map *ep_file = &map[type]; - - file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep, - &dwc3_endpoint_fops); -} - static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, struct dentry *parent) { int i; - for (i = 0; i < ARRAY_SIZE(map); i++) - dwc3_debugfs_create_endpoint_file(dep, parent, i); + for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) { + const struct file_operations *fops = dwc3_ep_file_map[i].fops; + const char *name = dwc3_ep_file_map[i].name; + + debugfs_create_file(name, S_IRUGO, parent, dep, fops); + } } static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep, -- cgit v1.2.1 From ddd05979f89cbbbd94dd4186f5ed5b2262cc1d9f Mon Sep 17 00:00:00 2001 From: Souptick Joarder Date: Wed, 14 Feb 2018 23:59:13 +0530 Subject: usb: gadget: udc: bdc: Use dma_pool_zalloc Use dma_pool_zalloc instead of dma_pool_alloc + memset Signed-off-by: Souptick Joarder Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/bdc/bdc_ep.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c index f40d4c13cfa4..03149b9d7ea7 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_ep.c +++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c @@ -151,7 +151,7 @@ static int ep_bd_list_alloc(struct bdc_ep *ep) if (!bd_table) goto fail; - bd_table->start_bd = dma_pool_alloc(bdc->bd_table_pool, + bd_table->start_bd = dma_pool_zalloc(bdc->bd_table_pool, GFP_ATOMIC, &dma); if (!bd_table->start_bd) { @@ -167,7 +167,6 @@ static int ep_bd_list_alloc(struct bdc_ep *ep) (unsigned long long)bd_table->dma, prev_table); ep->bd_list.bd_table_array[index] = bd_table; - memset(bd_table->start_bd, 0, bd_p_tab * sizeof(struct bdc_bd)); if (prev_table) chain_table(prev_table, bd_table, bd_p_tab); -- cgit v1.2.1 From 9556f70c00534a0160d6456026c59d84407449f2 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 12 Feb 2018 00:24:05 -0200 Subject: usb: phy: mxs: Staticize mxs_charger_secondary_detection() mxs_charger_secondary_detection() is only used in this file, so make it static. This fixes the following sparse warning: drivers/usb/phy/phy-mxs-usb.c:581:23: warning: symbol 'mxs_charger_secondary_detection' was not declared. Should it be static? Acked-by: Jun Li Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-mxs-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index fbec863350f6..e5aa24c1e4fd 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -578,7 +578,7 @@ static enum usb_charger_type mxs_charger_primary_detection(struct mxs_phy *x) * It must be called after DP is pulled up, which is used to * differentiate DCP and CDP. */ -enum usb_charger_type mxs_charger_secondary_detection(struct mxs_phy *x) +static enum usb_charger_type mxs_charger_secondary_detection(struct mxs_phy *x) { struct regmap *regmap = x->regmap_anatop; int val; -- cgit v1.2.1 From 6eb5ac2e99545b574b7a6422037ae790213b27ef Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Mon, 12 Feb 2018 00:19:11 +0100 Subject: usb: phy: ab8500: use correct enum type The local variable event is of type enum usb_phy_events. Use the same enum value USB_EVENT_NONE instead of UX500_MUSB_NONE. This avoids a warning when building with clang: drivers/usb/phy/phy-ab8500-usb.c:906:30: warning: implicit conversion from enumeration type 'enum ux500_musb_vbus_id_status' to different enumeration type 'enum usb_phy_events' [-Wenum-conversion] enum usb_phy_events event = UX500_MUSB_NONE; ~~~~~ ^~~~~~~~~~~~~~~ Signed-off-by: Stefan Agner Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-ab8500-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 87295313a10c..55655ec4c588 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -889,7 +889,7 @@ static int abx500_usb_link_status_update(struct ab8500_usb *ab) static irqreturn_t ab8500_usb_disconnect_irq(int irq, void *data) { struct ab8500_usb *ab = (struct ab8500_usb *) data; - enum usb_phy_events event = UX500_MUSB_NONE; + enum usb_phy_events event = USB_EVENT_NONE; /* Link status will not be updated till phy is disabled. */ if (ab->mode == USB_HOST) { -- cgit v1.2.1 From ac87e560f7c0f91b62012e9a159c0681a373b922 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 6 Feb 2018 09:50:40 +0100 Subject: usb: gadget: udc: change comparison to bitshift when dealing with a mask Due to a typo, the mask was destroyed by a comparison instead of a bit shift. Reported-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/goku_udc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/goku_udc.h b/drivers/usb/gadget/udc/goku_udc.h index 26601bf4e7a9..70023d401079 100644 --- a/drivers/usb/gadget/udc/goku_udc.h +++ b/drivers/usb/gadget/udc/goku_udc.h @@ -25,7 +25,7 @@ struct goku_udc_regs { # define INT_EP1DATASET 0x00040 # define INT_EP2DATASET 0x00080 # define INT_EP3DATASET 0x00100 -#define INT_EPnNAK(n) (0x00100 < (n)) /* 0 < n < 4 */ +#define INT_EPnNAK(n) (0x00100 << (n)) /* 0 < n < 4 */ # define INT_EP1NAK 0x00200 # define INT_EP2NAK 0x00400 # define INT_EP3NAK 0x00800 -- cgit v1.2.1 From a127f4f228104d391a6aa62a9a57b2ba697f90c2 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 26 Jan 2018 15:39:00 +0000 Subject: USB: gadget: function: remove redundant initialization of 'tv_nexus' Pointer tv_nexus is being initialized a value and this is never read and is later being updated with the same value. Remove the redundant initialization so that the assignment to tv_nexus is performed later and more local to when it is being read. Cleans up clang warning: drivers/usb/gadget/function/f_tcm.c:1097:25: warning: Value stored to 'tv_nexus' during its initialization is never read Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_tcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index da81cf16b850..d78dbb73bde8 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1094,7 +1094,7 @@ static int usbg_submit_command(struct f_uas *fu, struct command_iu *cmd_iu = cmdbuf; struct usbg_cmd *cmd; struct usbg_tpg *tpg = fu->tpg; - struct tcm_usbg_nexus *tv_nexus = tpg->tpg_nexus; + struct tcm_usbg_nexus *tv_nexus; u32 cmd_len; u16 scsi_tag; -- cgit v1.2.1 From 13431c60705f385b7f1c7bb749a93b84cf55c83f Mon Sep 17 00:00:00 2001 From: Ladislav Michl Date: Mon, 22 Jan 2018 17:05:21 +0100 Subject: usb: gadget: udc: atmel: Use devm_ioremap_resource() As devm_ioremap_resource() checks for valid resource, make use of it instead of testing ourselves. As a bonus memory region is requested. Acked-by: Nicolas Ferre Signed-off-by: Ladislav Michl Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 34 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 075eaaa8a408..f420710abdd7 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -2272,7 +2272,7 @@ static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, static int usba_udc_probe(struct platform_device *pdev) { - struct resource *regs, *fifo; + struct resource *res; struct clk *pclk, *hclk; struct usba_udc *udc; int irq, ret, i; @@ -2284,10 +2284,18 @@ static int usba_udc_probe(struct platform_device *pdev) udc->gadget = usba_gadget_template; INIT_LIST_HEAD(&udc->gadget.ep_list); - regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); - fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); - if (!regs || !fifo) - return -ENXIO; + res = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); + udc->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(udc->regs)) + return PTR_ERR(udc->regs); + dev_info(&pdev->dev, "MMIO registers at %pR mapped at %p\n", + res, udc->regs); + + res = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); + udc->fifo = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(udc->fifo)) + return PTR_ERR(udc->fifo); + dev_info(&pdev->dev, "FIFO at %pR mapped at %p\n", res, udc->fifo); irq = platform_get_irq(pdev, 0); if (irq < 0) @@ -2307,22 +2315,6 @@ static int usba_udc_probe(struct platform_device *pdev) udc->hclk = hclk; udc->vbus_pin = -ENODEV; - ret = -ENOMEM; - udc->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); - if (!udc->regs) { - dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n"); - return ret; - } - dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n", - (unsigned long)regs->start, udc->regs); - udc->fifo = devm_ioremap(&pdev->dev, fifo->start, resource_size(fifo)); - if (!udc->fifo) { - dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n"); - return ret; - } - dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n", - (unsigned long)fifo->start, udc->fifo); - platform_set_drvdata(pdev, udc); /* Make sure we start from a clean slate */ -- cgit v1.2.1 From f3768997013e1c7d625ca427150644f80eb5900e Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Mon, 25 Dec 2017 15:17:45 +0400 Subject: usb: dwc2: eliminate irq parameter from dwc2_gadget_init The irq is available in hsotg already, so there's no need to pass it as separate function parameter. Signed-off-by: Vardan Mikayelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 4 ++-- drivers/usb/dwc2/gadget.c | 7 +++---- drivers/usb/dwc2/platform.c | 2 +- 3 files changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index cd77af3b1565..8f77034f2ecf 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1180,7 +1180,7 @@ void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg); int dwc2_hsotg_remove(struct dwc2_hsotg *hsotg); int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2); int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2); -int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq); +int dwc2_gadget_init(struct dwc2_hsotg *hsotg); void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, bool reset); void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg); @@ -1199,7 +1199,7 @@ static inline int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2) { return 0; } static inline int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2) { return 0; } -static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) +static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg) { return 0; } static inline void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, bool reset) {} diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 5bcad1d869b5..c661597714c9 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4606,9 +4606,8 @@ static void dwc2_hsotg_dump(struct dwc2_hsotg *hsotg) /** * dwc2_gadget_init - init function for gadget * @dwc2: The data structure for the DWC2 driver. - * @irq: The IRQ number for the controller. */ -int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) +int dwc2_gadget_init(struct dwc2_hsotg *hsotg) { struct device *dev = hsotg->dev; int epnum; @@ -4649,8 +4648,8 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) return ret; } - ret = devm_request_irq(hsotg->dev, irq, dwc2_hsotg_irq, IRQF_SHARED, - dev_name(hsotg->dev), hsotg); + ret = devm_request_irq(hsotg->dev, hsotg->irq, dwc2_hsotg_irq, + IRQF_SHARED, dev_name(hsotg->dev), hsotg); if (ret < 0) { dev_err(dev, "cannot claim IRQ for gadget\n"); return ret; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 4703478f702f..9f39b15e7605 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -439,7 +439,7 @@ static int dwc2_driver_probe(struct platform_device *dev) goto error; if (hsotg->dr_mode != USB_DR_MODE_HOST) { - retval = dwc2_gadget_init(hsotg, hsotg->irq); + retval = dwc2_gadget_init(hsotg); if (retval) goto error; hsotg->gadget_enabled = 1; -- cgit v1.2.1 From 5d6ae4f0da8a64a185074dabb1b2f8c148efa741 Mon Sep 17 00:00:00 2001 From: Chris Dickens Date: Sun, 31 Dec 2017 18:59:42 -0800 Subject: usb: gadget: composite: fix incorrect handling of OS desc requests When handling an OS descriptor request, one of the first operations is to zero out the request buffer using the wLength from the setup packet. There is no bounds checking, so a wLength > 4096 would clobber memory adjacent to the request buffer. Fix this by taking the min of wLength and the request buffer length prior to the memset. While at it, define the buffer length in a header file so that magic numbers don't appear throughout the code. When returning data to the host, the data length should be the min of the wLength and the valid data we have to return. Currently we are returning wLength, thus requests for a wLength greater than the amount of data in the OS descriptor buffer would return invalid (albeit zero'd) data following the valid descriptor data. Fix this by counting the number of bytes when constructing the data and using this when determining the length of the request. Signed-off-by: Chris Dickens Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 40 +++++++++++++++++++--------------------- include/linux/usb/composite.h | 3 +++ 2 files changed, 22 insertions(+), 21 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 77c7ecca816a..b8b629c615d3 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1422,7 +1422,7 @@ static int count_ext_compat(struct usb_configuration *c) return res; } -static void fill_ext_compat(struct usb_configuration *c, u8 *buf) +static int fill_ext_compat(struct usb_configuration *c, u8 *buf) { int i, count; @@ -1449,10 +1449,12 @@ static void fill_ext_compat(struct usb_configuration *c, u8 *buf) buf += 23; } count += 24; - if (count >= 4096) - return; + if (count + 24 >= USB_COMP_EP0_OS_DESC_BUFSIZ) + return count; } } + + return count; } static int count_ext_prop(struct usb_configuration *c, int interface) @@ -1497,25 +1499,20 @@ static int fill_ext_prop(struct usb_configuration *c, int interface, u8 *buf) struct usb_os_desc *d; struct usb_os_desc_ext_prop *ext_prop; int j, count, n, ret; - u8 *start = buf; f = c->interface[interface]; + count = 10; /* header length */ for (j = 0; j < f->os_desc_n; ++j) { if (interface != f->os_desc_table[j].if_id) continue; d = f->os_desc_table[j].os_desc; if (d) list_for_each_entry(ext_prop, &d->ext_prop, entry) { - /* 4kB minus header length */ - n = buf - start; - if (n >= 4086) - return 0; - - count = ext_prop->data_len + + n = ext_prop->data_len + ext_prop->name_len + 14; - if (count > 4086 - n) - return -EINVAL; - usb_ext_prop_put_size(buf, count); + if (count + n >= USB_COMP_EP0_OS_DESC_BUFSIZ) + return count; + usb_ext_prop_put_size(buf, n); usb_ext_prop_put_type(buf, ext_prop->type); ret = usb_ext_prop_put_name(buf, ext_prop->name, ext_prop->name_len); @@ -1541,11 +1538,12 @@ static int fill_ext_prop(struct usb_configuration *c, int interface, u8 *buf) default: return -EINVAL; } - buf += count; + buf += n; + count += n; } } - return 0; + return count; } /* @@ -1827,6 +1825,7 @@ unknown: req->complete = composite_setup_complete; buf = req->buf; os_desc_cfg = cdev->os_desc_config; + w_length = min_t(u16, w_length, USB_COMP_EP0_OS_DESC_BUFSIZ); memset(buf, 0, w_length); buf[5] = 0x01; switch (ctrl->bRequestType & USB_RECIP_MASK) { @@ -1850,8 +1849,8 @@ unknown: count += 16; /* header */ put_unaligned_le32(count, buf); buf += 16; - fill_ext_compat(os_desc_cfg, buf); - value = w_length; + value = fill_ext_compat(os_desc_cfg, buf); + value = min_t(u16, w_length, value); } break; case USB_RECIP_INTERFACE: @@ -1880,8 +1879,7 @@ unknown: interface, buf); if (value < 0) return value; - - value = w_length; + value = min_t(u16, w_length, value); } break; } @@ -2156,8 +2154,8 @@ int composite_os_desc_req_prepare(struct usb_composite_dev *cdev, goto end; } - /* OS feature descriptor length <= 4kB */ - cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL); + cdev->os_desc_req->buf = kmalloc(USB_COMP_EP0_OS_DESC_BUFSIZ, + GFP_KERNEL); if (!cdev->os_desc_req->buf) { ret = -ENOMEM; usb_ep_free_request(ep0, cdev->os_desc_req); diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index cef0e44601f8..4b6b9283fa7b 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -54,6 +54,9 @@ /* big enough to hold our biggest descriptor */ #define USB_COMP_EP0_BUFSIZ 1024 +/* OS feature descriptor length <= 4kB */ +#define USB_COMP_EP0_OS_DESC_BUFSIZ 4096 + #define USB_MS_TO_HS_INTERVAL(x) (ilog2((x * 1000 / 125)) + 1) struct usb_configuration; -- cgit v1.2.1 From 636ba13aec8a0198d3fa4e2246e291a19694b50f Mon Sep 17 00:00:00 2001 From: Chris Dickens Date: Sun, 31 Dec 2017 18:59:43 -0800 Subject: usb: gadget: composite: remove duplicated code in OS desc handling When the host wants to fetch OS descriptors, it sends two requests. The first is only for the header and the second for the full amount specified by the header in the first request. The OS descriptor handling code is distinguishing the header-only requests based on the wLength of the setup packet, but the same code is executed in both cases to construct the actual header. Simplify this by always constructing the header and then filling out the rest of the request if the wLength is greater than the size of the header. Also remove the duplicate code for queueing the request to ep0 by adding a goto label. Signed-off-by: Chris Dickens Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 72 +++++++++++++----------------------------- 1 file changed, 22 insertions(+), 50 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index b8b629c615d3..1924e20f6e8c 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1427,6 +1427,7 @@ static int fill_ext_compat(struct usb_configuration *c, u8 *buf) int i, count; count = 16; + buf += 16; for (i = 0; i < c->next_interface_id; ++i) { struct usb_function *f; int j; @@ -1502,6 +1503,7 @@ static int fill_ext_prop(struct usb_configuration *c, int interface, u8 *buf) f = c->interface[interface]; count = 10; /* header length */ + buf += 10; for (j = 0; j < f->os_desc_n; ++j) { if (interface != f->os_desc_table[j].if_id) continue; @@ -1833,22 +1835,14 @@ unknown: if (w_index != 0x4 || (w_value >> 8)) break; buf[6] = w_index; - if (w_length == 0x10) { - /* Number of ext compat interfaces */ - count = count_ext_compat(os_desc_cfg); - buf[8] = count; - count *= 24; /* 24 B/ext compat desc */ - count += 16; /* header */ - put_unaligned_le32(count, buf); - value = w_length; - } else { - /* "extended compatibility ID"s */ - count = count_ext_compat(os_desc_cfg); - buf[8] = count; - count *= 24; /* 24 B/ext compat desc */ - count += 16; /* header */ - put_unaligned_le32(count, buf); - buf += 16; + /* Number of ext compat interfaces */ + count = count_ext_compat(os_desc_cfg); + buf[8] = count; + count *= 24; /* 24 B/ext compat desc */ + count += 16; /* header */ + put_unaligned_le32(count, buf); + value = w_length; + if (w_length > 0x10) { value = fill_ext_compat(os_desc_cfg, buf); value = min_t(u16, w_length, value); } @@ -1858,46 +1852,23 @@ unknown: break; interface = w_value & 0xFF; buf[6] = w_index; - if (w_length == 0x0A) { - count = count_ext_prop(os_desc_cfg, - interface); - put_unaligned_le16(count, buf + 8); - count = len_ext_prop(os_desc_cfg, - interface); - put_unaligned_le32(count, buf); - - value = w_length; - } else { - count = count_ext_prop(os_desc_cfg, - interface); - put_unaligned_le16(count, buf + 8); - count = len_ext_prop(os_desc_cfg, - interface); - put_unaligned_le32(count, buf); - buf += 10; + count = count_ext_prop(os_desc_cfg, + interface); + put_unaligned_le16(count, buf + 8); + count = len_ext_prop(os_desc_cfg, + interface); + put_unaligned_le32(count, buf); + value = w_length; + if (w_length > 0x0A) { value = fill_ext_prop(os_desc_cfg, interface, buf); - if (value < 0) - return value; - value = min_t(u16, w_length, value); + if (value >= 0) + value = min_t(u16, w_length, value); } break; } - if (value >= 0) { - req->length = value; - req->context = cdev; - req->zero = value < w_length; - value = composite_ep0_queue(cdev, req, - GFP_ATOMIC); - if (value < 0) { - DBG(cdev, "ep_queue --> %d\n", value); - req->status = 0; - composite_setup_complete(gadget->ep0, - req); - } - } - return value; + goto check_value; } VDBG(cdev, @@ -1971,6 +1942,7 @@ try_fun_setup: goto done; } +check_value: /* respond with data transfer before status phase? */ if (value >= 0 && value != USB_GADGET_DELAYED_STATUS) { req->length = value; -- cgit v1.2.1 From c53439fbd15600ecd48bfec446c2018e4fa6e241 Mon Sep 17 00:00:00 2001 From: "Tobin C. Harding" Date: Fri, 9 Mar 2018 17:11:14 +1100 Subject: usb: usbtest: Remove stack VLA usage The kernel would like to have all stack VLA usage removed[1]. We already have a pre-processor constant defined MAX_SGLEN. We can use this instead of the variable param-sglen. [1]: https://lkml.org/lkml/2018/3/7/621 Signed-off-by: Tobin C. Harding Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usbtest.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 90028ef541e3..9e1142b8b91b 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -2028,11 +2028,14 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param, unsigned i; unsigned long packets = 0; int status = 0; - struct urb *urbs[param->sglen]; + struct urb *urbs[MAX_SGLEN]; if (!param->sglen || param->iterations > UINT_MAX / param->sglen) return -EINVAL; + if (param->sglen > MAX_SGLEN) + return -EINVAL; + memset(&context, 0, sizeof(context)); context.count = param->iterations * param->sglen; context.dev = dev; -- cgit v1.2.1 From 351a8d4837ae0d61744e64262c3a80ab92ff3e42 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 29 Jan 2018 00:04:18 +0000 Subject: usbip: Correct maximum value of CONFIG_USBIP_VHCI_HC_PORTS Now that usbip supports USB3, the maximum number of ports allowed on a hub is 15 (USB_SS_MAXPORTS), not 31 (USB_MAXCHILDREN). Reported-by: Gianluigi Tiesi Reported-by: Borissh1983 References: https://bugs.debian.org/878866 Fixes: 1c9de5bf4286 ("usbip: vhci-hcd: Add USB3 SuperSpeed support") Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/usbip/Kconfig b/drivers/usb/usbip/Kconfig index eeefa29f8aa2..a20b65cb6678 100644 --- a/drivers/usb/usbip/Kconfig +++ b/drivers/usb/usbip/Kconfig @@ -27,7 +27,7 @@ config USBIP_VHCI_HCD config USBIP_VHCI_HC_PORTS int "Number of ports per USB/IP virtual host controller" - range 1 31 + range 1 15 default 8 depends on USBIP_VHCI_HCD ---help--- -- cgit v1.2.1 From 65f4b15cf4db1d6bc7fbe5a49e48f6969af8cd2d Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 26 Jan 2018 15:07:12 +0000 Subject: USB: wusbcore: remove redundant re-assignment to pointer 'dev' Pointer dev is initialized and then re-assigned with the same value a little later, hence the second assignment is redundant and can be removed. Cleans up clang warning: drivers/usb/wusbcore/wa-nep.c:88:17: warning: Value stored to 'dev' during its initialization is never read Signed-off-by: Colin Ian King Reviewed-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-nep.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/wusbcore/wa-nep.c b/drivers/usb/wusbcore/wa-nep.c index 9fdcb6b84abf..5f0656db5482 100644 --- a/drivers/usb/wusbcore/wa-nep.c +++ b/drivers/usb/wusbcore/wa-nep.c @@ -93,7 +93,6 @@ static void wa_notif_dispatch(struct work_struct *ws) goto out; /* screw it */ #endif atomic_dec(&wa->notifs_queued); /* Throttling ctl */ - dev = &wa->usb_iface->dev; size = nw->size; itr = nw->data; -- cgit v1.2.1 From 0c60b14860fe5f7086d4d9458a7f23ea1d09fcfa Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Tue, 27 Feb 2018 15:23:55 -0700 Subject: usbip: tools usbip_attach: Fix cryptic error messages Attach device error message is cryptic and useless. Fix it to be informative. Signed-off-by: Shuah Khan Reviewed-by: Krzysztof Opasiak Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/src/usbip_attach.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/usb/usbip/src/usbip_attach.c b/tools/usb/usbip/src/usbip_attach.c index 7f07b2d50f59..f60738735398 100644 --- a/tools/usb/usbip/src/usbip_attach.c +++ b/tools/usb/usbip/src/usbip_attach.c @@ -195,7 +195,8 @@ static int attach_device(char *host, char *busid) rhport = query_import_device(sockfd, busid); if (rhport < 0) { - err("query"); + err("Attach request for Device %s. Is this device exported?", + busid); return -1; } -- cgit v1.2.1 From 8fe8f5821c4ebd1c80099ff0d2b197fd17581a2c Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Tue, 27 Feb 2018 15:23:56 -0700 Subject: usbip: tools usbip_network: Fix cryptic error messages Kernel and tool version mismatch message is cryptic. Fix it to be informative. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/src/usbip_network.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/usb/usbip/src/usbip_network.c b/tools/usb/usbip/src/usbip_network.c index b4c37e76a6e0..90325fa8bc38 100644 --- a/tools/usb/usbip/src/usbip_network.c +++ b/tools/usb/usbip/src/usbip_network.c @@ -179,8 +179,8 @@ int usbip_net_recv_op_common(int sockfd, uint16_t *code) PACK_OP_COMMON(0, &op_common); if (op_common.version != USBIP_VERSION) { - dbg("version mismatch: %d %d", op_common.version, - USBIP_VERSION); + err("USBIP Kernel and tool version mismatch: %d %d:", + op_common.version, USBIP_VERSION); goto err; } -- cgit v1.2.1 From f6bcbf2e24eb10275b6614ccd9cab3e7d93748de Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 7 Mar 2018 13:42:24 -0700 Subject: usbip: tools: add more error codes for usbip request/reply messages Currently ST_OK and ST_NA are the only values defined to communicate status of a request from a client. Add more error codes to clearly indicate what failed. For example, when client sends request to import a device that isn't export-able, server can send a specific error code to the client. Existing defines are moved to a common header in libsrc to be included in the libusbip_la-usbip_common.o to be used by all the usbip tools. Supporting interface to print error strings is added to the common lib. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/libsrc/usbip_common.c | 23 +++++++++++++++++++++++ tools/usb/usbip/libsrc/usbip_common.h | 11 +++++++++++ tools/usb/usbip/src/usbip_network.h | 4 +--- 3 files changed, 35 insertions(+), 3 deletions(-) diff --git a/tools/usb/usbip/libsrc/usbip_common.c b/tools/usb/usbip/libsrc/usbip_common.c index 001bb8e8f668..bb424638d75b 100644 --- a/tools/usb/usbip/libsrc/usbip_common.c +++ b/tools/usb/usbip/libsrc/usbip_common.c @@ -66,6 +66,29 @@ const char *usbip_speed_string(int num) return "Unknown Speed"; } +struct op_common_status_string { + int num; + char *desc; +}; + +static struct op_common_status_string op_common_status_strings[] = { + { ST_OK, "Request Completed Successfully" }, + { ST_NA, "Request Failed" }, + { ST_DEV_BUSY, "Device busy (exported)" }, + { ST_DEV_ERR, "Device in error state" }, + { ST_NODEV, "Device not found" }, + { ST_ERROR, "Unexpected response" }, + { 0, NULL} +}; + +const char *usbip_op_common_status_string(int status) +{ + for (int i = 0; op_common_status_strings[i].desc != NULL; i++) + if (op_common_status_strings[i].num == status) + return op_common_status_strings[i].desc; + + return "Unknown Op Common Status"; +} #define DBG_UDEV_INTEGER(name)\ dbg("%-20s = %x", to_string(name), (int) udev->name) diff --git a/tools/usb/usbip/libsrc/usbip_common.h b/tools/usb/usbip/libsrc/usbip_common.h index e45ec9d2fdbc..73a367a7fa10 100644 --- a/tools/usb/usbip/libsrc/usbip_common.h +++ b/tools/usb/usbip/libsrc/usbip_common.h @@ -43,6 +43,16 @@ #define SYSFS_PATH_MAX 256 #define SYSFS_BUS_ID_SIZE 32 +/* Defines for op_code status in server/client op_common PDUs */ +#define ST_OK 0x00 +#define ST_NA 0x01 + /* Device requested for import is not available */ +#define ST_DEV_BUSY 0x02 + /* Device requested for import is in error state */ +#define ST_DEV_ERR 0x03 +#define ST_NODEV 0x04 +#define ST_ERROR 0x05 + extern int usbip_use_syslog; extern int usbip_use_stderr; extern int usbip_use_debug ; @@ -130,6 +140,7 @@ int read_usb_interface(struct usbip_usb_device *udev, int i, const char *usbip_speed_string(int num); const char *usbip_status_string(int32_t status); +const char *usbip_op_common_status_string(int status); int usbip_names_init(char *); void usbip_names_free(void); diff --git a/tools/usb/usbip/src/usbip_network.h b/tools/usb/usbip/src/usbip_network.h index 7032687621d3..b6a2f9be888c 100644 --- a/tools/usb/usbip/src/usbip_network.h +++ b/tools/usb/usbip/src/usbip_network.h @@ -27,9 +27,7 @@ struct op_common { #define OP_REPLY (0x00 << 8) uint16_t code; - /* add more error code */ -#define ST_OK 0x00 -#define ST_NA 0x01 + /* status codes defined in usbip_common.h */ uint32_t status; /* op_code status (for reply) */ } __attribute__((packed)); -- cgit v1.2.1 From c207a10d2f0bddf691920c0d73b7e8a83e6e2fb6 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 7 Mar 2018 13:42:25 -0700 Subject: usbip: usbip_host_common: Use new error codes to return request status Currently ST_OK and ST_NA are the only values used to communicate status of a request from a client. Use new error codes to clearly indicate what failed. For example, when client sends request to import a device that isn't export-able, send ST_DEV_BUSY to the client. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/libsrc/usbip_host_common.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/usb/usbip/libsrc/usbip_host_common.c b/tools/usb/usbip/libsrc/usbip_host_common.c index 6ff7b601f854..dc93fadbee96 100644 --- a/tools/usb/usbip/libsrc/usbip_host_common.c +++ b/tools/usb/usbip/libsrc/usbip_host_common.c @@ -234,14 +234,17 @@ int usbip_export_device(struct usbip_exported_device *edev, int sockfd) switch (edev->status) { case SDEV_ST_ERROR: dbg("status SDEV_ST_ERROR"); + ret = ST_DEV_ERR; break; case SDEV_ST_USED: dbg("status SDEV_ST_USED"); + ret = ST_DEV_BUSY; break; default: dbg("status unknown: 0x%x", edev->status); + ret = -1; } - return -1; + return ret; } /* only the first interface is true */ -- cgit v1.2.1 From ad81b15d561692df1ce2a57dce391d39633209b1 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 7 Mar 2018 13:42:26 -0700 Subject: usbip: tools: change to use new error codes in server reply messages Changed usbip_network, usbip_attach, usbip_list, and usbipd to use and propagate the new error codes in server reply messages. usbip_net_recv_op_common() is changed to take a pointer to status return the status returned in the op_common.status to callers. usbip_attach and usbip_list use the common interface to print error messages to indicate why the request failed. With this change the messages say why a request failed: - when a client requests a device that is already exported: usbip attach -r server_name -b 3-10.2 usbip: error: Attach Request for 3-10.2 failed - Device busy (exported) - when a client requests a device that isn't exportable, usbip attach -r server_name -b 3-10.4 usbip: error: Attach Request for 3-10.4 failed - Device not found Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/src/usbip_attach.c | 11 +++++------ tools/usb/usbip/src/usbip_list.c | 6 ++++-- tools/usb/usbip/src/usbip_network.c | 6 +++++- tools/usb/usbip/src/usbip_network.h | 2 +- tools/usb/usbip/src/usbipd.c | 18 +++++++++--------- 5 files changed, 24 insertions(+), 19 deletions(-) diff --git a/tools/usb/usbip/src/usbip_attach.c b/tools/usb/usbip/src/usbip_attach.c index f60738735398..ba88728483ff 100644 --- a/tools/usb/usbip/src/usbip_attach.c +++ b/tools/usb/usbip/src/usbip_attach.c @@ -135,6 +135,7 @@ static int query_import_device(int sockfd, char *busid) struct op_import_request request; struct op_import_reply reply; uint16_t code = OP_REP_IMPORT; + int status; memset(&request, 0, sizeof(request)); memset(&reply, 0, sizeof(reply)); @@ -157,9 +158,10 @@ static int query_import_device(int sockfd, char *busid) } /* receive a reply */ - rc = usbip_net_recv_op_common(sockfd, &code); + rc = usbip_net_recv_op_common(sockfd, &code, &status); if (rc < 0) { - err("recv op_common"); + err("Attach Request for %s failed - %s\n", + busid, usbip_op_common_status_string(status)); return -1; } @@ -194,11 +196,8 @@ static int attach_device(char *host, char *busid) } rhport = query_import_device(sockfd, busid); - if (rhport < 0) { - err("Attach request for Device %s. Is this device exported?", - busid); + if (rhport < 0) return -1; - } close(sockfd); diff --git a/tools/usb/usbip/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c index d65a9f444174..8d4ccf4b9480 100644 --- a/tools/usb/usbip/src/usbip_list.c +++ b/tools/usb/usbip/src/usbip_list.c @@ -62,6 +62,7 @@ static int get_exported_devices(char *host, int sockfd) struct usbip_usb_interface uintf; unsigned int i; int rc, j; + int status; rc = usbip_net_send_op_common(sockfd, OP_REQ_DEVLIST, 0); if (rc < 0) { @@ -69,9 +70,10 @@ static int get_exported_devices(char *host, int sockfd) return -1; } - rc = usbip_net_recv_op_common(sockfd, &code); + rc = usbip_net_recv_op_common(sockfd, &code, &status); if (rc < 0) { - dbg("usbip_net_recv_op_common failed"); + err("Exported Device List Request failed - %s\n", + usbip_op_common_status_string(status)); return -1; } diff --git a/tools/usb/usbip/src/usbip_network.c b/tools/usb/usbip/src/usbip_network.c index 90325fa8bc38..8ffcd47d9638 100644 --- a/tools/usb/usbip/src/usbip_network.c +++ b/tools/usb/usbip/src/usbip_network.c @@ -163,7 +163,7 @@ int usbip_net_send_op_common(int sockfd, uint32_t code, uint32_t status) return 0; } -int usbip_net_recv_op_common(int sockfd, uint16_t *code) +int usbip_net_recv_op_common(int sockfd, uint16_t *code, int *status) { struct op_common op_common; int rc; @@ -191,10 +191,14 @@ int usbip_net_recv_op_common(int sockfd, uint16_t *code) if (op_common.code != *code) { dbg("unexpected pdu %#0x for %#0x", op_common.code, *code); + /* return error status */ + *status = ST_ERROR; goto err; } } + *status = op_common.status; + if (op_common.status != ST_OK) { dbg("request failed at peer: %d", op_common.status); goto err; diff --git a/tools/usb/usbip/src/usbip_network.h b/tools/usb/usbip/src/usbip_network.h index b6a2f9be888c..555215eae43e 100644 --- a/tools/usb/usbip/src/usbip_network.h +++ b/tools/usb/usbip/src/usbip_network.h @@ -174,7 +174,7 @@ void usbip_net_pack_usb_interface(int pack, struct usbip_usb_interface *uinf); ssize_t usbip_net_recv(int sockfd, void *buff, size_t bufflen); ssize_t usbip_net_send(int sockfd, void *buff, size_t bufflen); int usbip_net_send_op_common(int sockfd, uint32_t code, uint32_t status); -int usbip_net_recv_op_common(int sockfd, uint16_t *code); +int usbip_net_recv_op_common(int sockfd, uint16_t *code, int *status); int usbip_net_set_reuseaddr(int sockfd); int usbip_net_set_nodelay(int sockfd); int usbip_net_set_keepalive(int sockfd); diff --git a/tools/usb/usbip/src/usbipd.c b/tools/usb/usbip/src/usbipd.c index c6dad2a13c80..f8ff735eb100 100644 --- a/tools/usb/usbip/src/usbipd.c +++ b/tools/usb/usbip/src/usbipd.c @@ -107,7 +107,7 @@ static int recv_request_import(int sockfd) struct usbip_usb_device pdu_udev; struct list_head *i; int found = 0; - int error = 0; + int status = ST_OK; int rc; memset(&req, 0, sizeof(req)); @@ -133,22 +133,21 @@ static int recv_request_import(int sockfd) usbip_net_set_nodelay(sockfd); /* export device needs a TCP/IP socket descriptor */ - rc = usbip_export_device(edev, sockfd); - if (rc < 0) - error = 1; + status = usbip_export_device(edev, sockfd); + if (status < 0) + status = ST_NA; } else { info("requested device not found: %s", req.busid); - error = 1; + status = ST_NODEV; } - rc = usbip_net_send_op_common(sockfd, OP_REP_IMPORT, - (!error ? ST_OK : ST_NA)); + rc = usbip_net_send_op_common(sockfd, OP_REP_IMPORT, status); if (rc < 0) { dbg("usbip_net_send_op_common failed: %#0x", OP_REP_IMPORT); return -1; } - if (error) { + if (status) { dbg("import request busid %s: failed", req.busid); return -1; } @@ -251,8 +250,9 @@ static int recv_pdu(int connfd) { uint16_t code = OP_UNSPEC; int ret; + int status; - ret = usbip_net_recv_op_common(connfd, &code); + ret = usbip_net_recv_op_common(connfd, &code, &status); if (ret < 0) { dbg("could not receive opcode: %#0x", code); return -1; -- cgit v1.2.1 From ccefd976f921a280327b17b2896bc809baa7b672 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Tue, 2 Jan 2018 15:50:49 +0000 Subject: typec: tcpm: Add PD Rev 3.0 definitions to PD header This commit adds definitions for PD Rev 3.0 messages, including APDO PPS and extended message support for TCPM. Signed-off-by: Adam Thomson Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/pd.h | 185 ++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 174 insertions(+), 11 deletions(-) diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h index b3d41d7409b3..ff359bdfdc7b 100644 --- a/include/linux/usb/pd.h +++ b/include/linux/usb/pd.h @@ -35,6 +35,13 @@ enum pd_ctrl_msg_type { PD_CTRL_WAIT = 12, PD_CTRL_SOFT_RESET = 13, /* 14-15 Reserved */ + PD_CTRL_NOT_SUPP = 16, + PD_CTRL_GET_SOURCE_CAP_EXT = 17, + PD_CTRL_GET_STATUS = 18, + PD_CTRL_FR_SWAP = 19, + PD_CTRL_GET_PPS_STATUS = 20, + PD_CTRL_GET_COUNTRY_CODES = 21, + /* 22-31 Reserved */ }; enum pd_data_msg_type { @@ -43,13 +50,39 @@ enum pd_data_msg_type { PD_DATA_REQUEST = 2, PD_DATA_BIST = 3, PD_DATA_SINK_CAP = 4, - /* 5-14 Reserved */ + PD_DATA_BATT_STATUS = 5, + PD_DATA_ALERT = 6, + PD_DATA_GET_COUNTRY_INFO = 7, + /* 8-14 Reserved */ PD_DATA_VENDOR_DEF = 15, + /* 16-31 Reserved */ +}; + +enum pd_ext_msg_type { + /* 0 Reserved */ + PD_EXT_SOURCE_CAP_EXT = 1, + PD_EXT_STATUS = 2, + PD_EXT_GET_BATT_CAP = 3, + PD_EXT_GET_BATT_STATUS = 4, + PD_EXT_BATT_CAP = 5, + PD_EXT_GET_MANUFACTURER_INFO = 6, + PD_EXT_MANUFACTURER_INFO = 7, + PD_EXT_SECURITY_REQUEST = 8, + PD_EXT_SECURITY_RESPONSE = 9, + PD_EXT_FW_UPDATE_REQUEST = 10, + PD_EXT_FW_UPDATE_RESPONSE = 11, + PD_EXT_PPS_STATUS = 12, + PD_EXT_COUNTRY_INFO = 13, + PD_EXT_COUNTRY_CODES = 14, + /* 15-31 Reserved */ }; #define PD_REV10 0x0 #define PD_REV20 0x1 +#define PD_REV30 0x2 +#define PD_MAX_REV PD_REV30 +#define PD_HEADER_EXT_HDR BIT(15) #define PD_HEADER_CNT_SHIFT 12 #define PD_HEADER_CNT_MASK 0x7 #define PD_HEADER_ID_SHIFT 9 @@ -59,18 +92,19 @@ enum pd_data_msg_type { #define PD_HEADER_REV_MASK 0x3 #define PD_HEADER_DATA_ROLE BIT(5) #define PD_HEADER_TYPE_SHIFT 0 -#define PD_HEADER_TYPE_MASK 0xf +#define PD_HEADER_TYPE_MASK 0x1f -#define PD_HEADER(type, pwr, data, id, cnt) \ +#define PD_HEADER(type, pwr, data, rev, id, cnt, ext_hdr) \ ((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) | \ ((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) | \ ((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) | \ - (PD_REV20 << PD_HEADER_REV_SHIFT) | \ + (rev << PD_HEADER_REV_SHIFT) | \ (((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) | \ - (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT)) + (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT) | \ + ((ext_hdr) ? PD_HEADER_EXT_HDR : 0)) #define PD_HEADER_LE(type, pwr, data, id, cnt) \ - cpu_to_le16(PD_HEADER((type), (pwr), (data), (id), (cnt))) + cpu_to_le16(PD_HEADER((type), (pwr), (data), PD_REV20, (id), (cnt), (0))) static inline unsigned int pd_header_cnt(u16 header) { @@ -102,16 +136,75 @@ static inline unsigned int pd_header_msgid_le(__le16 header) return pd_header_msgid(le16_to_cpu(header)); } +static inline unsigned int pd_header_rev(u16 header) +{ + return (header >> PD_HEADER_REV_SHIFT) & PD_HEADER_REV_MASK; +} + +static inline unsigned int pd_header_rev_le(__le16 header) +{ + return pd_header_rev(le16_to_cpu(header)); +} + +#define PD_EXT_HDR_CHUNKED BIT(15) +#define PD_EXT_HDR_CHUNK_NUM_SHIFT 11 +#define PD_EXT_HDR_CHUNK_NUM_MASK 0xf +#define PD_EXT_HDR_REQ_CHUNK BIT(10) +#define PD_EXT_HDR_DATA_SIZE_SHIFT 0 +#define PD_EXT_HDR_DATA_SIZE_MASK 0x1ff + +#define PD_EXT_HDR(data_size, req_chunk, chunk_num, chunked) \ + ((((data_size) & PD_EXT_HDR_DATA_SIZE_MASK) << PD_EXT_HDR_DATA_SIZE_SHIFT) | \ + ((req_chunk) ? PD_EXT_HDR_REQ_CHUNK : 0) | \ + (((chunk_num) & PD_EXT_HDR_CHUNK_NUM_MASK) << PD_EXT_HDR_CHUNK_NUM_SHIFT) | \ + ((chunked) ? PD_EXT_HDR_CHUNKED : 0)) + +#define PD_EXT_HDR_LE(data_size, req_chunk, chunk_num, chunked) \ + cpu_to_le16(PD_EXT_HDR((data_size), (req_chunk), (chunk_num), (chunked))) + +static inline unsigned int pd_ext_header_chunk_num(u16 ext_header) +{ + return (ext_header >> PD_EXT_HDR_CHUNK_NUM_SHIFT) & + PD_EXT_HDR_CHUNK_NUM_MASK; +} + +static inline unsigned int pd_ext_header_data_size(u16 ext_header) +{ + return (ext_header >> PD_EXT_HDR_DATA_SIZE_SHIFT) & + PD_EXT_HDR_DATA_SIZE_MASK; +} + +static inline unsigned int pd_ext_header_data_size_le(__le16 ext_header) +{ + return pd_ext_header_data_size(le16_to_cpu(ext_header)); +} + #define PD_MAX_PAYLOAD 7 +#define PD_EXT_MAX_CHUNK_DATA 26 /** - * struct pd_message - PD message as seen on wire - * @header: PD message header - * @payload: PD message payload - */ + * struct pd_chunked_ext_message_data - PD chunked extended message data as + * seen on wire + * @header: PD extended message header + * @data: PD extended message data + */ +struct pd_chunked_ext_message_data { + __le16 header; + u8 data[PD_EXT_MAX_CHUNK_DATA]; +} __packed; + +/** + * struct pd_message - PD message as seen on wire + * @header: PD message header + * @payload: PD message payload + * @ext_msg: PD message chunked extended message data + */ struct pd_message { __le16 header; - __le32 payload[PD_MAX_PAYLOAD]; + union { + __le32 payload[PD_MAX_PAYLOAD]; + struct pd_chunked_ext_message_data ext_msg; + }; } __packed; /* PDO: Power Data Object */ @@ -121,6 +214,7 @@ enum pd_pdo_type { PDO_TYPE_FIXED = 0, PDO_TYPE_BATT = 1, PDO_TYPE_VAR = 2, + PDO_TYPE_APDO = 3, }; #define PDO_TYPE_SHIFT 30 @@ -174,6 +268,34 @@ enum pd_pdo_type { (PDO_TYPE(PDO_TYPE_VAR) | PDO_VAR_MIN_VOLT(min_mv) | \ PDO_VAR_MAX_VOLT(max_mv) | PDO_VAR_MAX_CURR(max_ma)) +enum pd_apdo_type { + APDO_TYPE_PPS = 0, +}; + +#define PDO_APDO_TYPE_SHIFT 28 /* Only valid value currently is 0x0 - PPS */ +#define PDO_APDO_TYPE_MASK 0x3 + +#define PDO_APDO_TYPE(t) ((t) << PDO_APDO_TYPE_SHIFT) + +#define PDO_PPS_APDO_MAX_VOLT_SHIFT 17 /* 100mV units */ +#define PDO_PPS_APDO_MIN_VOLT_SHIFT 8 /* 100mV units */ +#define PDO_PPS_APDO_MAX_CURR_SHIFT 0 /* 50mA units */ + +#define PDO_PPS_APDO_VOLT_MASK 0xff +#define PDO_PPS_APDO_CURR_MASK 0x7f + +#define PDO_PPS_APDO_MIN_VOLT(mv) \ + ((((mv) / 100) & PDO_PPS_APDO_VOLT_MASK) << PDO_PPS_APDO_MIN_VOLT_SHIFT) +#define PDO_PPS_APDO_MAX_VOLT(mv) \ + ((((mv) / 100) & PDO_PPS_APDO_VOLT_MASK) << PDO_PPS_APDO_MAX_VOLT_SHIFT) +#define PDO_PPS_APDO_MAX_CURR(ma) \ + ((((ma) / 50) & PDO_PPS_APDO_CURR_MASK) << PDO_PPS_APDO_MAX_CURR_SHIFT) + +#define PDO_PPS_APDO(min_mv, max_mv, max_ma) \ + (PDO_TYPE(PDO_TYPE_APDO) | PDO_APDO_TYPE(APDO_TYPE_PPS) | \ + PDO_PPS_APDO_MIN_VOLT(min_mv) | PDO_PPS_APDO_MAX_VOLT(max_mv) | \ + PDO_PPS_APDO_MAX_CURR(max_ma)) + static inline enum pd_pdo_type pdo_type(u32 pdo) { return (pdo >> PDO_TYPE_SHIFT) & PDO_TYPE_MASK; @@ -204,6 +326,29 @@ static inline unsigned int pdo_max_power(u32 pdo) return ((pdo >> PDO_BATT_MAX_PWR_SHIFT) & PDO_PWR_MASK) * 250; } +static inline enum pd_apdo_type pdo_apdo_type(u32 pdo) +{ + return (pdo >> PDO_APDO_TYPE_SHIFT) & PDO_APDO_TYPE_MASK; +} + +static inline unsigned int pdo_pps_apdo_min_voltage(u32 pdo) +{ + return ((pdo >> PDO_PPS_APDO_MIN_VOLT_SHIFT) & + PDO_PPS_APDO_VOLT_MASK) * 100; +} + +static inline unsigned int pdo_pps_apdo_max_voltage(u32 pdo) +{ + return ((pdo >> PDO_PPS_APDO_MAX_VOLT_SHIFT) & + PDO_PPS_APDO_VOLT_MASK) * 100; +} + +static inline unsigned int pdo_pps_apdo_max_current(u32 pdo) +{ + return ((pdo >> PDO_PPS_APDO_MAX_CURR_SHIFT) & + PDO_PPS_APDO_CURR_MASK) * 50; +} + /* RDO: Request Data Object */ #define RDO_OBJ_POS_SHIFT 28 #define RDO_OBJ_POS_MASK 0x7 @@ -237,6 +382,24 @@ static inline unsigned int pdo_max_power(u32 pdo) (RDO_OBJ(idx) | (flags) | \ RDO_BATT_OP_PWR(op_mw) | RDO_BATT_MAX_PWR(max_mw)) +#define RDO_PROG_VOLT_MASK 0x7ff +#define RDO_PROG_CURR_MASK 0x7f + +#define RDO_PROG_VOLT_SHIFT 9 +#define RDO_PROG_CURR_SHIFT 0 + +#define RDO_PROG_VOLT_MV_STEP 20 +#define RDO_PROG_CURR_MA_STEP 50 + +#define PDO_PROG_OUT_VOLT(mv) \ + ((((mv) / RDO_PROG_VOLT_MV_STEP) & RDO_PROG_VOLT_MASK) << RDO_PROG_VOLT_SHIFT) +#define PDO_PROG_OP_CURR(ma) \ + ((((ma) / RDO_PROG_CURR_MA_STEP) & RDO_PROG_CURR_MASK) << RDO_PROG_CURR_SHIFT) + +#define RDO_PROG(idx, out_mv, op_ma, flags) \ + (RDO_OBJ(idx) | (flags) | \ + PDO_PROG_OUT_VOLT(out_mv) | PDO_PROG_OP_CURR(op_ma)) + static inline unsigned int rdo_index(u32 rdo) { return (rdo >> RDO_OBJ_POS_SHIFT) & RDO_OBJ_POS_MASK; -- cgit v1.2.1 From 456ebb4f221e98f507cc945690a670a79682c029 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Tue, 2 Jan 2018 15:50:50 +0000 Subject: typec: tcpm: Add ADO header for Alert message handling This commit adds a header providing definitions for handling Alert messages. Currently the header only focuses on handling incoming alerts. Signed-off-by: Adam Thomson Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/pd_ado.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 include/linux/usb/pd_ado.h diff --git a/include/linux/usb/pd_ado.h b/include/linux/usb/pd_ado.h new file mode 100644 index 000000000000..9aa1cf31c93c --- /dev/null +++ b/include/linux/usb/pd_ado.h @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2017 Dialog Semiconductor + * + * Author: Adam Thomson + */ + +#ifndef __LINUX_USB_PD_ADO_H +#define __LINUX_USB_PD_ADO_H + +/* ADO : Alert Data Object */ +#define USB_PD_ADO_TYPE_SHIFT 24 +#define USB_PD_ADO_TYPE_MASK 0xff +#define USB_PD_ADO_FIXED_BATT_SHIFT 20 +#define USB_PD_ADO_FIXED_BATT_MASK 0xf +#define USB_PD_ADO_HOT_SWAP_BATT_SHIFT 16 +#define USB_PD_ADO_HOT_SWAP_BATT_MASK 0xf + +#define USB_PD_ADO_TYPE_BATT_STATUS_CHANGE BIT(1) +#define USB_PD_ADO_TYPE_OCP BIT(2) +#define USB_PD_ADO_TYPE_OTP BIT(3) +#define USB_PD_ADO_TYPE_OP_COND_CHANGE BIT(4) +#define USB_PD_ADO_TYPE_SRC_INPUT_CHANGE BIT(5) +#define USB_PD_ADO_TYPE_OVP BIT(6) + +static inline unsigned int usb_pd_ado_type(u32 ado) +{ + return (ado >> USB_PD_ADO_TYPE_SHIFT) & USB_PD_ADO_TYPE_MASK; +} + +static inline unsigned int usb_pd_ado_fixed_batt(u32 ado) +{ + return (ado >> USB_PD_ADO_FIXED_BATT_SHIFT) & + USB_PD_ADO_FIXED_BATT_MASK; +} + +static inline unsigned int usb_pd_ado_hot_swap_batt(u32 ado) +{ + return (ado >> USB_PD_ADO_HOT_SWAP_BATT_SHIFT) & + USB_PD_ADO_HOT_SWAP_BATT_MASK; +} +#endif /* __LINUX_USB_PD_ADO_H */ -- cgit v1.2.1 From 02cad961cae556357e4a63b11f849e80418c1ffc Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Tue, 2 Jan 2018 15:50:51 +0000 Subject: typec: tcpm: Add SDB header for Status message handling This commit adds a header providing definitions for handling Status messages. Currently the header only focuses on handling incoming Status messages. Signed-off-by: Adam Thomson Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/pd_ext_sdb.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/linux/usb/pd_ext_sdb.h diff --git a/include/linux/usb/pd_ext_sdb.h b/include/linux/usb/pd_ext_sdb.h new file mode 100644 index 000000000000..0eb83ce19597 --- /dev/null +++ b/include/linux/usb/pd_ext_sdb.h @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2017 Dialog Semiconductor + * + * Author: Adam Thomson + */ + +#ifndef __LINUX_USB_PD_EXT_SDB_H +#define __LINUX_USB_PD_EXT_SDB_H + +/* SDB : Status Data Block */ +enum usb_pd_ext_sdb_fields { + USB_PD_EXT_SDB_INTERNAL_TEMP = 0, + USB_PD_EXT_SDB_PRESENT_INPUT, + USB_PD_EXT_SDB_PRESENT_BATT_INPUT, + USB_PD_EXT_SDB_EVENT_FLAGS, + USB_PD_EXT_SDB_TEMP_STATUS, + USB_PD_EXT_SDB_DATA_SIZE, +}; + +/* Event Flags */ +#define USB_PD_EXT_SDB_EVENT_OCP BIT(1) +#define USB_PD_EXT_SDB_EVENT_OTP BIT(2) +#define USB_PD_EXT_SDB_EVENT_OVP BIT(3) +#define USB_PD_EXT_SDB_EVENT_CF_CV_MODE BIT(4) + +#define USB_PD_EXT_SDB_PPS_EVENTS (USB_PD_EXT_SDB_EVENT_OCP | \ + USB_PD_EXT_SDB_EVENT_OTP | \ + USB_PD_EXT_SDB_EVENT_OVP) + +#endif /* __LINUX_USB_PD_EXT_SDB_H */ -- cgit v1.2.1 From e8c56f274da4d2ac8ba55e482f41b73148d5f885 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:17 +0200 Subject: USB: chipidea: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Peter Chen Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/debug.c | 65 ++++---------------------------------------- 1 file changed, 5 insertions(+), 60 deletions(-) diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c index c9e1a165ed82..ce648cb3ed94 100644 --- a/drivers/usb/chipidea/debug.c +++ b/drivers/usb/chipidea/debug.c @@ -45,18 +45,7 @@ static int ci_device_show(struct seq_file *s, void *data) return 0; } - -static int ci_device_open(struct inode *inode, struct file *file) -{ - return single_open(file, ci_device_show, inode->i_private); -} - -static const struct file_operations ci_device_fops = { - .open = ci_device_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ci_device); /** * ci_port_test_show: reads port test mode @@ -156,18 +145,7 @@ static int ci_qheads_show(struct seq_file *s, void *data) return 0; } - -static int ci_qheads_open(struct inode *inode, struct file *file) -{ - return single_open(file, ci_qheads_show, inode->i_private); -} - -static const struct file_operations ci_qheads_fops = { - .open = ci_qheads_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ci_qheads); /** * ci_requests_show: DMA contents of all requests currently queued (all endpts) @@ -204,18 +182,7 @@ static int ci_requests_show(struct seq_file *s, void *data) return 0; } - -static int ci_requests_open(struct inode *inode, struct file *file) -{ - return single_open(file, ci_requests_show, inode->i_private); -} - -static const struct file_operations ci_requests_fops = { - .open = ci_requests_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ci_requests); static int ci_otg_show(struct seq_file *s, void *unused) { @@ -278,18 +245,7 @@ static int ci_otg_show(struct seq_file *s, void *unused) return 0; } - -static int ci_otg_open(struct inode *inode, struct file *file) -{ - return single_open(file, ci_otg_show, inode->i_private); -} - -static const struct file_operations ci_otg_fops = { - .open = ci_otg_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ci_otg); static int ci_role_show(struct seq_file *s, void *data) { @@ -376,18 +332,7 @@ static int ci_registers_show(struct seq_file *s, void *unused) return 0; } - -static int ci_registers_open(struct inode *inode, struct file *file) -{ - return single_open(file, ci_registers_show, inode->i_private); -} - -static const struct file_operations ci_registers_fops = { - .open = ci_registers_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ci_registers); /** * dbg_create_files: initializes the attribute interface -- cgit v1.2.1 From fd9197ef4438a4696e13305af967b9d9ace7125d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:18 +0200 Subject: USB: dwc2: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: John Youn Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/debugfs.c | 84 ++++------------------------------------------ 1 file changed, 6 insertions(+), 78 deletions(-) diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index f4650a88be78..5e0d7f2bd2af 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -170,19 +170,7 @@ static int state_show(struct seq_file *seq, void *v) return 0; } - -static int state_open(struct inode *inode, struct file *file) -{ - return single_open(file, state_show, inode->i_private); -} - -static const struct file_operations state_fops = { - .owner = THIS_MODULE, - .open = state_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(state); /** * fifo_show - debugfs: show the fifo information @@ -219,19 +207,7 @@ static int fifo_show(struct seq_file *seq, void *v) return 0; } - -static int fifo_open(struct inode *inode, struct file *file) -{ - return single_open(file, fifo_show, inode->i_private); -} - -static const struct file_operations fifo_fops = { - .owner = THIS_MODULE, - .open = fifo_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(fifo); static const char *decode_direction(int is_in) { @@ -303,19 +279,7 @@ static int ep_show(struct seq_file *seq, void *v) return 0; } - -static int ep_open(struct inode *inode, struct file *file) -{ - return single_open(file, ep_show, inode->i_private); -} - -static const struct file_operations ep_fops = { - .owner = THIS_MODULE, - .open = ep_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ep); /** * dwc2_hsotg_create_debug - create debugfs directory and files @@ -770,19 +734,7 @@ static int params_show(struct seq_file *seq, void *v) return 0; } - -static int params_open(struct inode *inode, struct file *file) -{ - return single_open(file, params_show, inode->i_private); -} - -static const struct file_operations params_fops = { - .owner = THIS_MODULE, - .open = params_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(params); static int hw_params_show(struct seq_file *seq, void *v) { @@ -817,19 +769,7 @@ static int hw_params_show(struct seq_file *seq, void *v) return 0; } - -static int hw_params_open(struct inode *inode, struct file *file) -{ - return single_open(file, hw_params_show, inode->i_private); -} - -static const struct file_operations hw_params_fops = { - .owner = THIS_MODULE, - .open = hw_params_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(hw_params); static int dr_mode_show(struct seq_file *seq, void *v) { @@ -840,19 +780,7 @@ static int dr_mode_show(struct seq_file *seq, void *v) seq_printf(seq, "%s\n", dr_mode); return 0; } - -static int dr_mode_open(struct inode *inode, struct file *file) -{ - return single_open(file, dr_mode_show, inode->i_private); -} - -static const struct file_operations dr_mode_fops = { - .owner = THIS_MODULE, - .open = dr_mode_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(dr_mode); int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) { -- cgit v1.2.1 From efb85c4d24b4a551ce9bab5b4d2d6c54c9882d90 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:19 +0200 Subject: USB: musb: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Acked-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_debugfs.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c index 7cf5a1bbdaff..025b2c8630df 100644 --- a/drivers/usb/musb/musb_debugfs.c +++ b/drivers/usb/musb/musb_debugfs.c @@ -112,11 +112,7 @@ static int musb_regdump_show(struct seq_file *s, void *unused) pm_runtime_put_autosuspend(musb->controller); return 0; } - -static int musb_regdump_open(struct inode *inode, struct file *file) -{ - return single_open(file, musb_regdump_show, inode->i_private); -} +DEFINE_SHOW_ATTRIBUTE(musb_regdump); static int musb_test_mode_show(struct seq_file *s, void *unused) { @@ -161,13 +157,6 @@ static int musb_test_mode_show(struct seq_file *s, void *unused) return 0; } -static const struct file_operations musb_regdump_fops = { - .open = musb_regdump_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int musb_test_mode_open(struct inode *inode, struct file *file) { return single_open(file, musb_test_mode_show, inode->i_private); -- cgit v1.2.1 From b5c293982cb948104827566652023e3c9d971a0b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:20 +0200 Subject: USB: gadget: bcm63xx: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Kevin Cernekee Cc: Florian Fainelli Cc: bcm-kernel-feedback-list@broadcom.com Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/bcm63xx_udc.c | 33 ++++----------------------------- 1 file changed, 4 insertions(+), 29 deletions(-) diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c index 465ccd1104de..3a8df8601074 100644 --- a/drivers/usb/gadget/udc/bcm63xx_udc.c +++ b/drivers/usb/gadget/udc/bcm63xx_udc.c @@ -2158,6 +2158,7 @@ static int bcm63xx_usbd_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(bcm63xx_usbd_dbg); /* * bcm63xx_iudma_dbg_show - Show IUDMA status and descriptors. @@ -2238,33 +2239,7 @@ static int bcm63xx_iudma_dbg_show(struct seq_file *s, void *p) return 0; } - -static int bcm63xx_usbd_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, bcm63xx_usbd_dbg_show, inode->i_private); -} - -static int bcm63xx_iudma_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, bcm63xx_iudma_dbg_show, inode->i_private); -} - -static const struct file_operations usbd_dbg_fops = { - .owner = THIS_MODULE, - .open = bcm63xx_usbd_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations iudma_dbg_fops = { - .owner = THIS_MODULE, - .open = bcm63xx_iudma_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - +DEFINE_SHOW_ATTRIBUTE(bcm63xx_iudma_dbg); /** * bcm63xx_udc_init_debugfs - Create debugfs entries. @@ -2282,11 +2257,11 @@ static void bcm63xx_udc_init_debugfs(struct bcm63xx_udc *udc) goto err_root; usbd = debugfs_create_file("usbd", 0400, root, udc, - &usbd_dbg_fops); + &bcm63xx_usbd_dbg_fops); if (!usbd) goto err_usbd; iudma = debugfs_create_file("iudma", 0400, root, udc, - &iudma_dbg_fops); + &bcm63xx_iudma_dbg_fops); if (!iudma) goto err_iudma; -- cgit v1.2.1 From 40d2589aa45c663e46813ec1aed24d8f37501186 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:21 +0200 Subject: USB: gadget: gr: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/gr_udc.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c index b3fb1bbdb854..ca83c15d8ea4 100644 --- a/drivers/usb/gadget/udc/gr_udc.c +++ b/drivers/usb/gadget/udc/gr_udc.c @@ -179,8 +179,7 @@ static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) seq_puts(seq, "\n"); } - -static int gr_seq_show(struct seq_file *seq, void *v) +static int gr_dfs_show(struct seq_file *seq, void *v) { struct gr_udc *dev = seq->private; u32 control = gr_read32(&dev->regs->control); @@ -203,19 +202,7 @@ static int gr_seq_show(struct seq_file *seq, void *v) return 0; } - -static int gr_dfs_open(struct inode *inode, struct file *file) -{ - return single_open(file, gr_seq_show, inode->i_private); -} - -static const struct file_operations gr_dfs_fops = { - .owner = THIS_MODULE, - .open = gr_dfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(gr_dfs); static void gr_dfs_create(struct gr_udc *dev) { -- cgit v1.2.1 From aaabe7a8fdcae0854dd3a05f6207d90b2ba6b284 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:22 +0200 Subject: USB: gadget: pxa25x: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Daniel Mack Cc: Haojian Zhuang Signed-off-by: Andy Shevchenko Acked-by: Robert Jarzmik Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/pxa25x_udc.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c index 0e3f5faa000e..d4be53559f2e 100644 --- a/drivers/usb/gadget/udc/pxa25x_udc.c +++ b/drivers/usb/gadget/udc/pxa25x_udc.c @@ -1233,8 +1233,7 @@ static const struct usb_gadget_ops pxa25x_udc_ops = { #ifdef CONFIG_USB_GADGET_DEBUG_FS -static int -udc_seq_show(struct seq_file *m, void *_d) +static int udc_debug_show(struct seq_file *m, void *_d) { struct pxa25x_udc *dev = m->private; unsigned long flags; @@ -1335,25 +1334,12 @@ done: local_irq_restore(flags); return 0; } - -static int -udc_debugfs_open(struct inode *inode, struct file *file) -{ - return single_open(file, udc_seq_show, inode->i_private); -} - -static const struct file_operations debug_fops = { - .open = udc_debugfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; +DEFINE_SHOW_ATTRIBUTE(udc_debug); #define create_debug_files(dev) \ do { \ dev->debugfs_udc = debugfs_create_file(dev->gadget.name, \ - S_IRUGO, NULL, dev, &debug_fops); \ + S_IRUGO, NULL, dev, &udc_debug_fops); \ } while (0) #define remove_debug_files(dev) debugfs_remove(dev->debugfs_udc) -- cgit v1.2.1 From 35a7e0a2efe6714f68c92fb03e760264929f6dc5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:23 +0200 Subject: USB: gadget: pxa27x: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Daniel Mack Cc: Haojian Zhuang Signed-off-by: Andy Shevchenko Acked-by: Robert Jarzmik Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/pxa27x_udc.c | 42 +++---------------------------------- 1 file changed, 3 insertions(+), 39 deletions(-) diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index fadcf2653c3d..a58242e901df 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -131,6 +131,7 @@ static int state_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(state_dbg); static int queues_dbg_show(struct seq_file *s, void *p) { @@ -163,6 +164,7 @@ static int queues_dbg_show(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(queues_dbg); static int eps_dbg_show(struct seq_file *s, void *p) { @@ -199,45 +201,7 @@ static int eps_dbg_show(struct seq_file *s, void *p) return 0; } - -static int eps_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, eps_dbg_show, inode->i_private); -} - -static int queues_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, queues_dbg_show, inode->i_private); -} - -static int state_dbg_open(struct inode *inode, struct file *file) -{ - return single_open(file, state_dbg_show, inode->i_private); -} - -static const struct file_operations state_dbg_fops = { - .owner = THIS_MODULE, - .open = state_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations queues_dbg_fops = { - .owner = THIS_MODULE, - .open = queues_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; - -static const struct file_operations eps_dbg_fops = { - .owner = THIS_MODULE, - .open = eps_dbg_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(eps_dbg); static void pxa_init_debugfs(struct pxa_udc *udc) { -- cgit v1.2.1 From 513f6750c433c49856490e341a9610d502607393 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:24 +0200 Subject: USB: host: fhci: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/fhci-dbg.c | 26 ++------------------------ 1 file changed, 2 insertions(+), 24 deletions(-) diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c index fafa91189e45..ebf9bb219f75 100644 --- a/drivers/usb/host/fhci-dbg.c +++ b/drivers/usb/host/fhci-dbg.c @@ -55,6 +55,7 @@ static int fhci_dfs_regs_show(struct seq_file *s, void *v) return 0; } +DEFINE_SHOW_ATTRIBUTE(fhci_dfs_regs); static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v) { @@ -75,30 +76,7 @@ static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v) return 0; } - -static int fhci_dfs_regs_open(struct inode *inode, struct file *file) -{ - return single_open(file, fhci_dfs_regs_show, inode->i_private); -} - -static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file) -{ - return single_open(file, fhci_dfs_irq_stat_show, inode->i_private); -} - -static const struct file_operations fhci_dfs_regs_fops = { - .open = fhci_dfs_regs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations fhci_dfs_irq_stat_fops = { - .open = fhci_dfs_irq_stat_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(fhci_dfs_irq_stat); void fhci_dfs_create(struct fhci_hcd *fhci) { -- cgit v1.2.1 From 64cfe860678f0d541468872d106bc26edfe33ff8 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:25 +0200 Subject: USB: host: imx21: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/imx21-dbg.c | 65 ++++---------------------------------------- 1 file changed, 5 insertions(+), 60 deletions(-) diff --git a/drivers/usb/host/imx21-dbg.c b/drivers/usb/host/imx21-dbg.c index b964f9a51d87..a213ed6f07b5 100644 --- a/drivers/usb/host/imx21-dbg.c +++ b/drivers/usb/host/imx21-dbg.c @@ -245,6 +245,7 @@ static int debug_status_show(struct seq_file *s, void *v) return 0; } +DEFINE_SHOW_ATTRIBUTE(debug_status); static int debug_dmem_show(struct seq_file *s, void *v) { @@ -266,6 +267,7 @@ static int debug_dmem_show(struct seq_file *s, void *v) return 0; } +DEFINE_SHOW_ATTRIBUTE(debug_dmem); static int debug_etd_show(struct seq_file *s, void *v) { @@ -334,6 +336,7 @@ static int debug_etd_show(struct seq_file *s, void *v) return 0; } +DEFINE_SHOW_ATTRIBUTE(debug_etd); static void debug_statistics_show_one(struct seq_file *s, const char *name, struct debug_stats *stats) @@ -368,6 +371,7 @@ static int debug_statistics_show(struct seq_file *s, void *v) return 0; } +DEFINE_SHOW_ATTRIBUTE(debug_statistics); static void debug_isoc_show_one(struct seq_file *s, const char *name, int index, struct debug_isoc_trace *trace) @@ -409,66 +413,7 @@ static int debug_isoc_show(struct seq_file *s, void *v) return 0; } - -static int debug_status_open(struct inode *inode, struct file *file) -{ - return single_open(file, debug_status_show, inode->i_private); -} - -static int debug_dmem_open(struct inode *inode, struct file *file) -{ - return single_open(file, debug_dmem_show, inode->i_private); -} - -static int debug_etd_open(struct inode *inode, struct file *file) -{ - return single_open(file, debug_etd_show, inode->i_private); -} - -static int debug_statistics_open(struct inode *inode, struct file *file) -{ - return single_open(file, debug_statistics_show, inode->i_private); -} - -static int debug_isoc_open(struct inode *inode, struct file *file) -{ - return single_open(file, debug_isoc_show, inode->i_private); -} - -static const struct file_operations debug_status_fops = { - .open = debug_status_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations debug_dmem_fops = { - .open = debug_dmem_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations debug_etd_fops = { - .open = debug_etd_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations debug_statistics_fops = { - .open = debug_statistics_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations debug_isoc_fops = { - .open = debug_isoc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(debug_isoc); static void create_debug_files(struct imx21 *imx21) { -- cgit v1.2.1 From 0a9e8adea7946ef5fcb9f433dad0df7b512111d9 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:26 +0200 Subject: USB: host: isp116x: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Cc: Olav Kongas Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp116x-hcd.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 5f9234b9cf7b..4602ed801f0a 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1168,7 +1168,7 @@ static void dump_int(struct seq_file *s, char *label, u32 mask) mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); } -static int isp116x_show_dbg(struct seq_file *s, void *unused) +static int isp116x_debug_show(struct seq_file *s, void *unused) { struct isp116x *isp116x = s->private; @@ -1196,18 +1196,7 @@ static int isp116x_show_dbg(struct seq_file *s, void *unused) return 0; } - -static int isp116x_open_seq(struct inode *inode, struct file *file) -{ - return single_open(file, isp116x_show_dbg, inode->i_private); -} - -static const struct file_operations isp116x_debug_fops = { - .open = isp116x_open_seq, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(isp116x_debug); static int create_debug_file(struct isp116x *isp116x) { -- cgit v1.2.1 From e23500dd34f2094e48dc6b53971b94dad5e8cfbf Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:28 +0200 Subject: USB: host: whci: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/whci/debug.c | 48 ++++++------------------------------------- 1 file changed, 6 insertions(+), 42 deletions(-) diff --git a/drivers/usb/host/whci/debug.c b/drivers/usb/host/whci/debug.c index f154e5791bfd..8ddfe3f1f693 100644 --- a/drivers/usb/host/whci/debug.c +++ b/drivers/usb/host/whci/debug.c @@ -72,7 +72,7 @@ static void qset_print(struct seq_file *s, struct whc_qset *qset) } } -static int di_print(struct seq_file *s, void *p) +static int di_show(struct seq_file *s, void *p) { struct whc *whc = s->private; int d; @@ -91,8 +91,9 @@ static int di_print(struct seq_file *s, void *p) } return 0; } +DEFINE_SHOW_ATTRIBUTE(di); -static int asl_print(struct seq_file *s, void *p) +static int asl_show(struct seq_file *s, void *p) { struct whc *whc = s->private; struct whc_qset *qset; @@ -103,8 +104,9 @@ static int asl_print(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(asl); -static int pzl_print(struct seq_file *s, void *p) +static int pzl_show(struct seq_file *s, void *p) { struct whc *whc = s->private; struct whc_qset *qset; @@ -118,45 +120,7 @@ static int pzl_print(struct seq_file *s, void *p) } return 0; } - -static int di_open(struct inode *inode, struct file *file) -{ - return single_open(file, di_print, inode->i_private); -} - -static int asl_open(struct inode *inode, struct file *file) -{ - return single_open(file, asl_print, inode->i_private); -} - -static int pzl_open(struct inode *inode, struct file *file) -{ - return single_open(file, pzl_print, inode->i_private); -} - -static const struct file_operations di_fops = { - .open = di_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static const struct file_operations asl_fops = { - .open = asl_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static const struct file_operations pzl_fops = { - .open = pzl_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; +DEFINE_SHOW_ATTRIBUTE(pzl); void whc_dbg_init(struct whc *whc) { -- cgit v1.2.1 From 9e902c598b9253032dbc03f18a9af55fcd245a17 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:29 +0200 Subject: USB: typec: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Reviewed-by: Guenter Roeck Reviewed-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/fusb302/fusb302.c | 17 +++-------------- drivers/usb/typec/tcpm.c | 17 +++-------------- 2 files changed, 6 insertions(+), 28 deletions(-) diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c index 9ce4756adad6..da179aaf789e 100644 --- a/drivers/usb/typec/fusb302/fusb302.c +++ b/drivers/usb/typec/fusb302/fusb302.c @@ -199,7 +199,7 @@ static void fusb302_log(struct fusb302_chip *chip, const char *fmt, ...) va_end(args); } -static int fusb302_seq_show(struct seq_file *s, void *v) +static int fusb302_debug_show(struct seq_file *s, void *v) { struct fusb302_chip *chip = (struct fusb302_chip *)s->private; int tail; @@ -216,18 +216,7 @@ static int fusb302_seq_show(struct seq_file *s, void *v) return 0; } - -static int fusb302_debug_open(struct inode *inode, struct file *file) -{ - return single_open(file, fusb302_seq_show, inode->i_private); -} - -static const struct file_operations fusb302_debug_operations = { - .open = fusb302_debug_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(fusb302_debug); static struct dentry *rootdir; @@ -242,7 +231,7 @@ static int fusb302_debugfs_init(struct fusb302_chip *chip) chip->dentry = debugfs_create_file(dev_name(chip->dev), S_IFREG | 0444, rootdir, - chip, &fusb302_debug_operations); + chip, &fusb302_debug_fops); return 0; } diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index f4d563ee7690..a163ba55b061 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -506,7 +506,7 @@ static void tcpm_log_source_caps(struct tcpm_port *port) } } -static int tcpm_seq_show(struct seq_file *s, void *v) +static int tcpm_debug_show(struct seq_file *s, void *v) { struct tcpm_port *port = (struct tcpm_port *)s->private; int tail; @@ -523,18 +523,7 @@ static int tcpm_seq_show(struct seq_file *s, void *v) return 0; } - -static int tcpm_debug_open(struct inode *inode, struct file *file) -{ - return single_open(file, tcpm_seq_show, inode->i_private); -} - -static const struct file_operations tcpm_debug_operations = { - .open = tcpm_debug_open, - .llseek = seq_lseek, - .read = seq_read, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(tcpm_debug); static struct dentry *rootdir; @@ -550,7 +539,7 @@ static int tcpm_debugfs_init(struct tcpm_port *port) port->dentry = debugfs_create_file(dev_name(port->dev), S_IFREG | 0444, rootdir, - port, &tcpm_debug_operations); + port, &tcpm_debug_fops); return 0; } -- cgit v1.2.1 From 092bd5c2b939e63e0e02249f7695ca828fa05049 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Feb 2018 18:08:30 +0200 Subject: uwb: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/uwb/uwb-debug.c | 32 ++++---------------------------- 1 file changed, 4 insertions(+), 28 deletions(-) diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 991374b13571..f1622bae13be 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -206,7 +206,7 @@ static const struct file_operations command_fops = { .owner = THIS_MODULE, }; -static int reservations_print(struct seq_file *s, void *p) +static int reservations_show(struct seq_file *s, void *p) { struct uwb_rc *rc = s->private; struct uwb_rsv *rsv; @@ -240,21 +240,9 @@ static int reservations_print(struct seq_file *s, void *p) return 0; } +DEFINE_SHOW_ATTRIBUTE(reservations); -static int reservations_open(struct inode *inode, struct file *file) -{ - return single_open(file, reservations_print, inode->i_private); -} - -static const struct file_operations reservations_fops = { - .open = reservations_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static int drp_avail_print(struct seq_file *s, void *p) +static int drp_avail_show(struct seq_file *s, void *p) { struct uwb_rc *rc = s->private; @@ -264,19 +252,7 @@ static int drp_avail_print(struct seq_file *s, void *p) return 0; } - -static int drp_avail_open(struct inode *inode, struct file *file) -{ - return single_open(file, drp_avail_print, inode->i_private); -} - -static const struct file_operations drp_avail_fops = { - .open = drp_avail_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; +DEFINE_SHOW_ATTRIBUTE(drp_avail); static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel) { -- cgit v1.2.1 From 687ca6395f10ac8a54fd5285dda91ed9efac9e23 Mon Sep 17 00:00:00 2001 From: Kirill Kapranov Date: Sat, 17 Feb 2018 23:01:40 +0200 Subject: USB: adutux: Add waiting in transfer abortion Add waiting for an URB transmit finish that let the last URB to be sent (to be not discarded) during 'release' procedure. W/o this waiting,the last frame will be nearly always lost. A test case: an attempt of sending a single frame: echo -en "\001mk255" >/dev/adutux0 Signed-off-by: Kirill Kapranov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/adutux.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index f7a2fe42396f..b3160afe0458 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -132,6 +132,8 @@ static void adu_abort_transfers(struct adu_device *dev) spin_lock_irqsave(&dev->buflock, flags); if (!dev->out_urb_finished) { spin_unlock_irqrestore(&dev->buflock, flags); + wait_event_timeout(dev->write_wait, dev->out_urb_finished, + COMMAND_TIMEOUT); usb_kill_urb(dev->interrupt_out_urb); } else spin_unlock_irqrestore(&dev->buflock, flags); -- cgit v1.2.1 From 57edd462270bf2c50049b73774cb5915e2f12aa8 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 1 Mar 2018 13:15:28 +0200 Subject: usb: Don't disable Latency tolerance Messaging (LTM) before port reset Disabing Latency Tolerance Messaging before port reset is unnecessary. LTM is automatically disabled at port reset. If host can't communicate with the device the LTM message will fail, and the hub driver will unnecessarily do a logical disconnect. Broken communication is ofter the reason for a reset in the first place. Additionally we can't guarantee device is in a configured state, epecially in reset-resume case when root hub lost power. LTM can't be modified unless device is in a configured state. Just remove LTM disabling before port reset. Details about LTM and port reset in USB 3 specification: USB 3 spec section 9.4.5 "The LTM Enable field can be modified by the SetFeature() and ClearFeature() requests using the LTM_ENABLE feature selector. This field is reset to zero when the device is reset." USB 3 spec section 9.4.1 "The device shall process a Clear Feature (U1_Enable or U2_Enable or LTM_Enable) only if the device is in the configured state." Signed-off-by: Mathias Nyman Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c5c1f6cf3228..ac7bab772a3a 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -5505,21 +5505,15 @@ static int usb_reset_and_verify_device(struct usb_device *udev) if (udev->usb2_hw_lpm_enabled == 1) usb_set_usb2_hardware_lpm(udev, 0); - /* Disable LPM and LTM while we reset the device and reinstall the alt - * settings. Device-initiated LPM settings, and system exit latency - * settings are cleared when the device is reset, so we have to set - * them up again. + /* Disable LPM while we reset the device and reinstall the alt settings. + * Device-initiated LPM, and system exit latency settings are cleared + * when the device is reset, so we have to set them up again. */ ret = usb_unlocked_disable_lpm(udev); if (ret) { dev_err(&udev->dev, "%s Failed to disable LPM\n", __func__); goto re_enumerate_no_bos; } - ret = usb_disable_ltm(udev); - if (ret) { - dev_err(&udev->dev, "%s Failed to disable LTM\n", __func__); - goto re_enumerate_no_bos; - } bos = udev->bos; udev->bos = NULL; -- cgit v1.2.1 From 161c3bc30f3a07458f91f15e35d5b2e91fa617cc Mon Sep 17 00:00:00 2001 From: Alex Hung Date: Sun, 4 Mar 2018 21:57:06 -0800 Subject: usb: clarify ACPI spec version and section number for _UPC & _PLD ACPI spec inserts sections for new features frequently and section numbers are changed. It is easy to refer to ACPI spec if ACPI version is available in comments. There are no functional changes. Signed-off-by: Alex Hung Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/usb-acpi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 84da17460568..e221861b3187 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -90,8 +90,8 @@ static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle, acpi_status status; /* - * According to ACPI Spec 9.13. PLD indicates whether usb port is - * user visible and _UPC indicates whether it is connectable. If + * According to 9.14 in ACPI Spec 6.2. _PLD indicates whether usb port + * is user visible and _UPC indicates whether it is connectable. If * the port was visible and connectable, it could be freely connected * and disconnected with USB devices. If no visible and connectable, * a usb device is directly hard-wired to the port. If no visible and -- cgit v1.2.1 From 01812ba34a9a7756a46a54f25ba0f02e727ff35c Mon Sep 17 00:00:00 2001 From: Himanshu Jha Date: Thu, 8 Mar 2018 00:08:24 +0530 Subject: usb: isp1760: Use kasprintf Use kasprintf instead of combination of kmalloc and sprintf and therefore avoid unnecessary computation of string length. Also, remove the useless local variable. Signed-off-by: Himanshu Jha Reviewed-by: Kees Cook Signed-off-by: Greg Kroah-Hartman --- drivers/usb/isp1760/isp1760-udc.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c index bac4ef5d9512..1714b2258b54 100644 --- a/drivers/usb/isp1760/isp1760-udc.c +++ b/drivers/usb/isp1760/isp1760-udc.c @@ -1441,7 +1441,6 @@ int isp1760_udc_register(struct isp1760_device *isp, int irq, unsigned long irqflags) { struct isp1760_udc *udc = &isp->udc; - const char *devname; int ret; udc->irq = -1; @@ -1455,13 +1454,10 @@ int isp1760_udc_register(struct isp1760_device *isp, int irq, if (ret < 0) return ret; - devname = dev_name(isp->dev); - udc->irqname = kmalloc(strlen(devname) + 7, GFP_KERNEL); + udc->irqname = kasprintf(GFP_KERNEL, "%s (udc)", dev_name(isp->dev)); if (!udc->irqname) return -ENOMEM; - sprintf(udc->irqname, "%s (udc)", devname); - ret = request_irq(irq, isp1760_udc_irq, IRQF_SHARED | irqflags, udc->irqname, udc); if (ret < 0) -- cgit v1.2.1 From 05db0dcc70c61bb51d01845e558bd43add5d55bb Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:02 +0100 Subject: dt-bindings: usb: add the documentation for USB HCDs A USB HCD may have several PHYs which need to be configured before the the HCD starts working. This adds the documentation for such a USB HCD as well as a reference to the new "usb-hcd.txt" from all bindings that implement a USB HCD which support one USB PHY per port. Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt | 5 ++++- Documentation/devicetree/bindings/usb/mediatek,mtu3.txt | 5 ++++- Documentation/devicetree/bindings/usb/usb-ehci.txt | 6 ++++-- Documentation/devicetree/bindings/usb/usb-hcd.txt | 9 +++++++++ Documentation/devicetree/bindings/usb/usb-ohci.txt | 6 ++++-- Documentation/devicetree/bindings/usb/usb-uhci.txt | 3 +++ Documentation/devicetree/bindings/usb/usb-xhci.txt | 5 +++++ 7 files changed, 33 insertions(+), 6 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/usb-hcd.txt diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt index 88d9f4a4b280..266c2d917a28 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt @@ -32,7 +32,7 @@ Required properties: "mcu_ck": mcu_bus clock for register access, "dma_ck": dma_bus clock for data transfer by DMA - - phys : a list of phandle + phy specifier pairs + - phys : see usb-hcd.txt in the current directory Optional properties: - wakeup-source : enable USB remote wakeup; @@ -52,6 +52,9 @@ Optional properties: See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt - imod-interval-ns: default interrupt moderation interval is 5000ns +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Example: usb30: usb@11270000 { compatible = "mediatek,mt8173-xhci"; diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt index d589a1ef96a1..3382b5cb471d 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt @@ -17,7 +17,7 @@ Required properties: - clock-names : must contain "sys_ck" for clock of controller, the following clocks are optional: "ref_ck", "mcu_ck" and "dam_ck"; - - phys : a list of phandle + phy specifier pairs + - phys : see usb-hcd.txt in the current directory - dr_mode : should be one of "host", "peripheral" or "otg", refer to usb/generic.txt @@ -53,6 +53,9 @@ Optional properties: - mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0, bit1 for u3port1, ... etc; +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Sub-nodes: The xhci should be added as subnode to mtu3 as shown in the following example if host mode is enabled. The DT binding details of xhci can be found in: diff --git a/Documentation/devicetree/bindings/usb/usb-ehci.txt b/Documentation/devicetree/bindings/usb/usb-ehci.txt index 3efde12b5d68..0f1b75386207 100644 --- a/Documentation/devicetree/bindings/usb/usb-ehci.txt +++ b/Documentation/devicetree/bindings/usb/usb-ehci.txt @@ -16,10 +16,12 @@ Optional properties: - has-transaction-translator : boolean, set this if EHCI have a Transaction Translator built into the root hub. - clocks : a list of phandle + clock specifier pairs - - phys : phandle + phy specifier pair - - phy-names : "usb" + - phys : see usb-hcd.txt in the current directory - resets : phandle + reset specifier pair +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Example (Sequoia 440EPx): ehci@e0000300 { compatible = "ibm,usb-ehci-440epx", "usb-ehci"; diff --git a/Documentation/devicetree/bindings/usb/usb-hcd.txt b/Documentation/devicetree/bindings/usb/usb-hcd.txt new file mode 100644 index 000000000000..50529b838c9c --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb-hcd.txt @@ -0,0 +1,9 @@ +Generic USB HCD (Host Controller Device) Properties + +Optional properties: +- phys: a list of all USB PHYs on this HCD + +Example: + &usb1 { + phys = <&usb2_phy1>, <&usb3_phy1>; + }; diff --git a/Documentation/devicetree/bindings/usb/usb-ohci.txt b/Documentation/devicetree/bindings/usb/usb-ohci.txt index 09e70c875bc6..a8d2103d1f3d 100644 --- a/Documentation/devicetree/bindings/usb/usb-ohci.txt +++ b/Documentation/devicetree/bindings/usb/usb-ohci.txt @@ -13,10 +13,12 @@ Optional properties: - remote-wakeup-connected: remote wakeup is wired on the platform - num-ports : u32, to override the detected port count - clocks : a list of phandle + clock specifier pairs -- phys : phandle + phy specifier pair -- phy-names : "usb" +- phys : see usb-hcd.txt in the current directory - resets : a list of phandle + reset specifier pairs +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Example: ohci0: usb@1c14400 { diff --git a/Documentation/devicetree/bindings/usb/usb-uhci.txt b/Documentation/devicetree/bindings/usb/usb-uhci.txt index 298133416c97..cc2e6f7d602e 100644 --- a/Documentation/devicetree/bindings/usb/usb-uhci.txt +++ b/Documentation/devicetree/bindings/usb/usb-uhci.txt @@ -6,6 +6,9 @@ Required properties: - reg : Should contain 1 register ranges(address and length) - interrupts : UHCI controller interrupt +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Example: uhci@d8007b00 { diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt index e2ea59bbca93..2f7663bb69ff 100644 --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt @@ -32,6 +32,11 @@ Optional properties: - usb3-lpm-capable: determines if platform is USB3 LPM capable - quirk-broken-port-ped: set if the controller has broken port disable mechanism - imod-interval-ns: default interrupt moderation interval is 5000ns + - phys : see usb-hcd.txt in the current directory + +additionally the properties from usb-hcd.txt (in the current directory) are +supported. + Example: usb@f0931000 { -- cgit v1.2.1 From 4e88d4c083016454f179686529ae65d70b933b58 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:03 +0100 Subject: usb: add a flag to skip PHY initialization to struct usb_hcd The USB HCD core driver parses the device-tree node for "phys" and "usb-phys" properties. It also manages the power state of these PHYs automatically. However, drivers may opt-out of this behavior by setting "phy" or "usb_phy" in struct usb_hcd to a non-null value. An example where this is required is the "Qualcomm USB2 controller", implemented by the chipidea driver. The hardware requires that the PHY is only powered on after the "reset completed" event from the controller is received. A follow-up patch will allow the USB HCD core driver to manage more than one PHY. Add a new "skip_phy_initialization" bitflag to struct usb_hcd so drivers can opt-out of any PHY management provided by the USB HCD core driver. This also updates the existing drivers so they use the new flag if they want to opt out of the PHY management provided by the USB HCD core driver. This means that for these drivers the new "multiple PHY" handling (which will be added in a follow-up patch) will be disabled as well. Signed-off-by: Martin Blumenstingl Acked-by: Peter Chen Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/host.c | 6 ++---- drivers/usb/core/hcd.c | 4 ++-- drivers/usb/host/ehci-fsl.c | 2 ++ drivers/usb/host/ehci-platform.c | 4 ++-- drivers/usb/host/ehci-tegra.c | 1 + drivers/usb/host/ohci-omap.c | 1 + drivers/usb/host/ohci-platform.c | 4 ++-- drivers/usb/host/xhci-plat.c | 1 + include/linux/usb/hcd.h | 6 ++++++ 9 files changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 19d60ed7e41f..af45aa3222b5 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -124,10 +124,8 @@ static int host_start(struct ci_hdrc *ci) hcd->power_budget = ci->platdata->power_budget; hcd->tpl_support = ci->platdata->tpl_support; - if (ci->phy) - hcd->phy = ci->phy; - else - hcd->usb_phy = ci->usb_phy; + if (ci->phy || ci->usb_phy) + hcd->skip_phy_initialization = 1; ehci = hcd_to_ehci(hcd); ehci->caps = ci->hw_bank.cap; diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index fc32391a34d5..f2307470a31e 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2727,7 +2727,7 @@ int usb_add_hcd(struct usb_hcd *hcd, int retval; struct usb_device *rhdev; - if (IS_ENABLED(CONFIG_USB_PHY) && !hcd->usb_phy) { + if (IS_ENABLED(CONFIG_USB_PHY) && !hcd->skip_phy_initialization) { struct usb_phy *phy = usb_get_phy_dev(hcd->self.sysdev, 0); if (IS_ERR(phy)) { @@ -2745,7 +2745,7 @@ int usb_add_hcd(struct usb_hcd *hcd, } } - if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->skip_phy_initialization) { struct phy *phy = phy_get(hcd->self.sysdev, "usb"); if (IS_ERR(phy)) { diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index c5094cb88cd5..0a9fd2022acf 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -155,6 +155,8 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev) retval = -ENODEV; goto err2; } + + hcd->skip_phy_initialization = 1; } #endif return retval; diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index b065a960adc2..b91eea8c73ae 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -219,9 +219,9 @@ static int ehci_platform_probe(struct platform_device *dev) if (IS_ERR(priv->phys[phy_num])) { err = PTR_ERR(priv->phys[phy_num]); goto err_put_hcd; - } else if (!hcd->phy) { + } else { /* Avoiding phy_get() in usb_add_hcd() */ - hcd->phy = priv->phys[phy_num]; + hcd->skip_phy_initialization = 1; } } diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index c809f7d2f08f..a6f4389f7e88 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -461,6 +461,7 @@ static int tegra_ehci_probe(struct platform_device *pdev) goto cleanup_clk_en; } hcd->usb_phy = u_phy; + hcd->skip_phy_initialization = 1; tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node, "nvidia,needs-double-reset"); diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index 0201c49bc4fc..d8d35d456456 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -230,6 +230,7 @@ static int ohci_omap_reset(struct usb_hcd *hcd) } else { return -EPROBE_DEFER; } + hcd->skip_phy_initialization = 1; ohci->start_hnp = start_hnp; } #endif diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c index 1e6c954f4b3f..62ef36a9333f 100644 --- a/drivers/usb/host/ohci-platform.c +++ b/drivers/usb/host/ohci-platform.c @@ -186,9 +186,9 @@ static int ohci_platform_probe(struct platform_device *dev) if (IS_ERR(priv->phys[phy_num])) { err = PTR_ERR(priv->phys[phy_num]); goto err_put_hcd; - } else if (!hcd->phy) { + } else { /* Avoiding phy_get() in usb_add_hcd() */ - hcd->phy = priv->phys[phy_num]; + hcd->skip_phy_initialization = 1; } } diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 6f038306c14d..6700e5ee82ad 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -284,6 +284,7 @@ static int xhci_plat_probe(struct platform_device *pdev) ret = usb_phy_init(hcd->usb_phy); if (ret) goto put_usb3_hcd; + hcd->skip_phy_initialization = 1; } ret = usb_add_hcd(hcd, irq, IRQF_SHARED); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 176900528822..693502c84c04 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -151,6 +151,12 @@ struct usb_hcd { unsigned msix_enabled:1; /* driver has MSI-X enabled? */ unsigned msi_enabled:1; /* driver has MSI enabled? */ unsigned remove_phy:1; /* auto-remove USB phy */ + /* + * do not manage the PHY state in the HCD core, instead let the driver + * handle this (for example if the PHY can only be turned on after a + * specific event) + */ + unsigned skip_phy_initialization:1; /* The next flag is a stopgap, to be removed when all the HCDs * support the new root-hub polling mechanism. */ -- cgit v1.2.1 From 07dbff0ddbd86c08c42088e9f996c2650095d684 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:04 +0100 Subject: usb: core: add a wrapper for the USB PHYs on the HCD Many SoC platforms have separate devices for the USB PHY which are registered through the generic PHY framework. These PHYs have to be enabled to make the USB controller actually work. They also have to be disabled again on shutdown/suspend. Currently (at least) the following HCI platform drivers are using custom code to obtain all PHYs via devicetree for the roothub/controller and disable/enable them when required: - ehci-platform.c has ehci_platform_power_{on,off} - xhci-mtk.c has xhci_mtk_phy_{init,exit,power_on,power_off} - ohci-platform.c has ohci_platform_power_{on,off} With this new wrapper the USB PHYs can be specified directly in the USB controller's devicetree node (just like on the drivers listed above). This allows SoCs like the Amlogic Meson GXL family to operate correctly once this is wired up correctly. These SoCs use a dwc3 controller and require all USB PHYs to be initialized (if one of the USB PHYs it not initialized then none of USB port works at all). Signed-off-by: Martin Blumenstingl Tested-by: Yixun Lan Cc: Chunfeng Yun Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/Makefile | 2 +- drivers/usb/core/phy.c | 158 ++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/core/phy.h | 7 ++ 3 files changed, 166 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/core/phy.c create mode 100644 drivers/usb/core/phy.h diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile index 92c9cefb4317..18e874b0441e 100644 --- a/drivers/usb/core/Makefile +++ b/drivers/usb/core/Makefile @@ -6,7 +6,7 @@ usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o usbcore-y += devio.o notify.o generic.o quirks.o devices.o -usbcore-y += port.o +usbcore-y += phy.o port.o usbcore-$(CONFIG_OF) += of.o usbcore-$(CONFIG_USB_PCI) += hcd-pci.o diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c new file mode 100644 index 000000000000..09b7c43c0ea4 --- /dev/null +++ b/drivers/usb/core/phy.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * A wrapper for multiple PHYs which passes all phy_* function calls to + * multiple (actual) PHY devices. This is comes handy when initializing + * all PHYs on a HCD and to keep them all in the same state. + * + * Copyright (C) 2018 Martin Blumenstingl + */ + +#include +#include +#include +#include + +#include "phy.h" + +struct usb_phy_roothub { + struct phy *phy; + struct list_head list; +}; + +static struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev) +{ + struct usb_phy_roothub *roothub_entry; + + roothub_entry = devm_kzalloc(dev, sizeof(*roothub_entry), GFP_KERNEL); + if (!roothub_entry) + return ERR_PTR(-ENOMEM); + + INIT_LIST_HEAD(&roothub_entry->list); + + return roothub_entry; +} + +static int usb_phy_roothub_add_phy(struct device *dev, int index, + struct list_head *list) +{ + struct usb_phy_roothub *roothub_entry; + struct phy *phy = devm_of_phy_get_by_index(dev, dev->of_node, index); + + if (IS_ERR_OR_NULL(phy)) { + if (!phy || PTR_ERR(phy) == -ENODEV) + return 0; + else + return PTR_ERR(phy); + } + + roothub_entry = usb_phy_roothub_alloc(dev); + if (IS_ERR(roothub_entry)) + return PTR_ERR(roothub_entry); + + roothub_entry->phy = phy; + + list_add_tail(&roothub_entry->list, list); + + return 0; +} + +struct usb_phy_roothub *usb_phy_roothub_init(struct device *dev) +{ + struct usb_phy_roothub *phy_roothub; + struct usb_phy_roothub *roothub_entry; + struct list_head *head; + int i, num_phys, err; + + num_phys = of_count_phandle_with_args(dev->of_node, "phys", + "#phy-cells"); + if (num_phys <= 0) + return NULL; + + phy_roothub = usb_phy_roothub_alloc(dev); + if (IS_ERR(phy_roothub)) + return phy_roothub; + + for (i = 0; i < num_phys; i++) { + err = usb_phy_roothub_add_phy(dev, i, &phy_roothub->list); + if (err) + goto err_out; + } + + head = &phy_roothub->list; + + list_for_each_entry(roothub_entry, head, list) { + err = phy_init(roothub_entry->phy); + if (err) + goto err_exit_phys; + } + + return phy_roothub; + +err_exit_phys: + list_for_each_entry_continue_reverse(roothub_entry, head, list) + phy_exit(roothub_entry->phy); + +err_out: + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(usb_phy_roothub_init); + +int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub) +{ + struct usb_phy_roothub *roothub_entry; + struct list_head *head; + int err, ret = 0; + + if (!phy_roothub) + return 0; + + head = &phy_roothub->list; + + list_for_each_entry(roothub_entry, head, list) { + err = phy_exit(roothub_entry->phy); + if (err) + ret = ret; + } + + return ret; +} +EXPORT_SYMBOL_GPL(usb_phy_roothub_exit); + +int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub) +{ + struct usb_phy_roothub *roothub_entry; + struct list_head *head; + int err; + + if (!phy_roothub) + return 0; + + head = &phy_roothub->list; + + list_for_each_entry(roothub_entry, head, list) { + err = phy_power_on(roothub_entry->phy); + if (err) + goto err_out; + } + + return 0; + +err_out: + list_for_each_entry_continue_reverse(roothub_entry, head, list) + phy_power_off(roothub_entry->phy); + + return err; +} +EXPORT_SYMBOL_GPL(usb_phy_roothub_power_on); + +void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub) +{ + struct usb_phy_roothub *roothub_entry; + + if (!phy_roothub) + return; + + list_for_each_entry_reverse(roothub_entry, &phy_roothub->list, list) + phy_power_off(roothub_entry->phy); +} +EXPORT_SYMBOL_GPL(usb_phy_roothub_power_off); diff --git a/drivers/usb/core/phy.h b/drivers/usb/core/phy.h new file mode 100644 index 000000000000..6fde59bfbff8 --- /dev/null +++ b/drivers/usb/core/phy.h @@ -0,0 +1,7 @@ +struct usb_phy_roothub; + +struct usb_phy_roothub *usb_phy_roothub_init(struct device *dev); +int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub); + +int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub); +void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub); -- cgit v1.2.1 From 178a0bce05cbc17a27f9cba78258c5d12adc980c Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:05 +0100 Subject: usb: core: hcd: integrate the PHY wrapper into the HCD core This integrates the PHY wrapper into the core hcd infrastructure. Multiple PHYs which are part of the HCD's device tree node are now managed (= powered on/off when needed), by the new usb_phy_roothub code. Suspend and resume is also supported, however not for runtime/auto-suspend (which is triggered for example when no devices are connected to the USB bus). This is needed on some SoCs (for example Amlogic Meson GXL) because if the PHYs are disabled during auto-suspend then devices which are plugged in afterwards are not seen by the host. One example where this is required is the Amlogic GXL and GXM SoCs: They are using a dwc3 USB controller with up to three ports enabled on the internal roothub. Each port has it's own PHY which must be enabled (if one of the PHYs is left disabled then none of the USB ports works at all). The new logic works on the Amlogic GXL and GXM SoCs because the dwc3 driver internally creates a xhci-hcd which then registers a HCD which then triggers our new PHY wrapper. USB controller drivers can opt out of this by setting "skip_phy_initialization" in struct usb_hcd to true. This is identical to how it works for a single USB PHY, so the "multiple PHY" handling is disabled for drivers that opted out of the management logic of a single PHY. Signed-off-by: Martin Blumenstingl Acked-by: Alan Stern Acked-by: Chunfeng Yun Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 31 +++++++++++++++++++++++++++++++ include/linux/usb/hcd.h | 1 + 2 files changed, 32 insertions(+) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index f2307470a31e..32797c25ac3b 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -37,6 +37,7 @@ #include #include "usb.h" +#include "phy.h" /*-------------------------------------------------------------------------*/ @@ -2260,6 +2261,9 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) usb_set_device_state(rhdev, USB_STATE_SUSPENDED); hcd->state = HC_STATE_SUSPENDED; + if (!PMSG_IS_AUTO(msg)) + usb_phy_roothub_power_off(hcd->phy_roothub); + /* Did we race with a root-hub wakeup event? */ if (rhdev->do_remote_wakeup) { char buffer[6]; @@ -2296,6 +2300,13 @@ int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) dev_dbg(&rhdev->dev, "skipped %s of dead bus\n", "resume"); return 0; } + + if (!PMSG_IS_AUTO(msg)) { + status = usb_phy_roothub_power_on(hcd->phy_roothub); + if (status) + return status; + } + if (!hcd->driver->bus_resume) return -ENOENT; if (HCD_RH_RUNNING(hcd)) @@ -2333,6 +2344,7 @@ int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) } } else { hcd->state = old_state; + usb_phy_roothub_power_off(hcd->phy_roothub); dev_dbg(&rhdev->dev, "bus %s fail, err %d\n", "resume", status); if (status != -ESHUTDOWN) @@ -2769,6 +2781,18 @@ int usb_add_hcd(struct usb_hcd *hcd, } } + if (!hcd->skip_phy_initialization) { + hcd->phy_roothub = usb_phy_roothub_init(hcd->self.sysdev); + if (IS_ERR(hcd->phy_roothub)) { + retval = PTR_ERR(hcd->phy_roothub); + goto err_phy_roothub_init; + } + + retval = usb_phy_roothub_power_on(hcd->phy_roothub); + if (retval) + goto err_usb_phy_roothub_power_on; + } + dev_info(hcd->self.controller, "%s\n", hcd->product_desc); /* Keep old behaviour if authorized_default is not in [0, 1]. */ @@ -2933,6 +2957,10 @@ err_allocate_root_hub: err_register_bus: hcd_buffer_destroy(hcd); err_create_buf: + usb_phy_roothub_power_off(hcd->phy_roothub); +err_usb_phy_roothub_power_on: + usb_phy_roothub_exit(hcd->phy_roothub); +err_phy_roothub_init: if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); @@ -3017,6 +3045,9 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_deregister_bus(&hcd->self); hcd_buffer_destroy(hcd); + usb_phy_roothub_power_off(hcd->phy_roothub); + usb_phy_roothub_exit(hcd->phy_roothub); + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 693502c84c04..a042675e03ba 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -104,6 +104,7 @@ struct usb_hcd { */ struct usb_phy *usb_phy; struct phy *phy; + struct usb_phy_roothub *phy_roothub; /* Flags that need to be manipulated atomically because they can * change while the host controller is running. Always use -- cgit v1.2.1 From 6ae9f5062aa6f5a301c16715c601c05bc9aa450e Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:06 +0100 Subject: usb: host: xhci-mtk: remove custom USB PHY handling The new PHY wrapper is now wired up in the core HCD code. This means that PHYs are now controlled (initialized, enabled, disabled, exited) without requiring any host-driver specific code. Remove the custom USB PHY handling from the xhci-mtk driver as the core HCD code now handles this. Signed-off-by: Martin Blumenstingl Tested-by: Sean Wang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mtk.c | 98 +-------------------------------------------- 1 file changed, 2 insertions(+), 96 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index b0ab4d5e2751..7334da9e9779 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -352,62 +351,6 @@ static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = { static struct hc_driver __read_mostly xhci_mtk_hc_driver; -static int xhci_mtk_phy_init(struct xhci_hcd_mtk *mtk) -{ - int i; - int ret; - - for (i = 0; i < mtk->num_phys; i++) { - ret = phy_init(mtk->phys[i]); - if (ret) - goto exit_phy; - } - return 0; - -exit_phy: - for (; i > 0; i--) - phy_exit(mtk->phys[i - 1]); - - return ret; -} - -static int xhci_mtk_phy_exit(struct xhci_hcd_mtk *mtk) -{ - int i; - - for (i = 0; i < mtk->num_phys; i++) - phy_exit(mtk->phys[i]); - - return 0; -} - -static int xhci_mtk_phy_power_on(struct xhci_hcd_mtk *mtk) -{ - int i; - int ret; - - for (i = 0; i < mtk->num_phys; i++) { - ret = phy_power_on(mtk->phys[i]); - if (ret) - goto power_off_phy; - } - return 0; - -power_off_phy: - for (; i > 0; i--) - phy_power_off(mtk->phys[i - 1]); - - return ret; -} - -static void xhci_mtk_phy_power_off(struct xhci_hcd_mtk *mtk) -{ - unsigned int i; - - for (i = 0; i < mtk->num_phys; i++) - phy_power_off(mtk->phys[i]); -} - static int xhci_mtk_ldos_enable(struct xhci_hcd_mtk *mtk) { int ret; @@ -488,8 +431,6 @@ static int xhci_mtk_probe(struct platform_device *pdev) struct xhci_hcd *xhci; struct resource *res; struct usb_hcd *hcd; - struct phy *phy; - int phy_num; int ret = -ENODEV; int irq; @@ -529,16 +470,6 @@ static int xhci_mtk_probe(struct platform_device *pdev) return ret; } - mtk->num_phys = of_count_phandle_with_args(node, - "phys", "#phy-cells"); - if (mtk->num_phys > 0) { - mtk->phys = devm_kcalloc(dev, mtk->num_phys, - sizeof(*mtk->phys), GFP_KERNEL); - if (!mtk->phys) - return -ENOMEM; - } else { - mtk->num_phys = 0; - } pm_runtime_enable(dev); pm_runtime_get_sync(dev); device_enable_async_suspend(dev); @@ -596,23 +527,6 @@ static int xhci_mtk_probe(struct platform_device *pdev) mtk->has_ippc = false; } - for (phy_num = 0; phy_num < mtk->num_phys; phy_num++) { - phy = devm_of_phy_get_by_index(dev, node, phy_num); - if (IS_ERR(phy)) { - ret = PTR_ERR(phy); - goto put_usb2_hcd; - } - mtk->phys[phy_num] = phy; - } - - ret = xhci_mtk_phy_init(mtk); - if (ret) - goto put_usb2_hcd; - - ret = xhci_mtk_phy_power_on(mtk); - if (ret) - goto exit_phys; - device_init_wakeup(dev, true); xhci = hcd_to_xhci(hcd); @@ -630,7 +544,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) dev_name(dev), hcd); if (!xhci->shared_hcd) { ret = -ENOMEM; - goto power_off_phys; + goto disable_device_wakeup; } ret = usb_add_hcd(hcd, irq, IRQF_SHARED); @@ -653,13 +567,9 @@ put_usb3_hcd: xhci_mtk_sch_exit(mtk); usb_put_hcd(xhci->shared_hcd); -power_off_phys: - xhci_mtk_phy_power_off(mtk); +disable_device_wakeup: device_init_wakeup(dev, false); -exit_phys: - xhci_mtk_phy_exit(mtk); - put_usb2_hcd: usb_put_hcd(hcd); @@ -682,8 +592,6 @@ static int xhci_mtk_remove(struct platform_device *dev) struct xhci_hcd *xhci = hcd_to_xhci(hcd); usb_remove_hcd(xhci->shared_hcd); - xhci_mtk_phy_power_off(mtk); - xhci_mtk_phy_exit(mtk); device_init_wakeup(&dev->dev, false); usb_remove_hcd(hcd); @@ -718,7 +626,6 @@ static int __maybe_unused xhci_mtk_suspend(struct device *dev) del_timer_sync(&xhci->shared_hcd->rh_timer); xhci_mtk_host_disable(mtk); - xhci_mtk_phy_power_off(mtk); xhci_mtk_clks_disable(mtk); usb_wakeup_set(mtk, true); return 0; @@ -732,7 +639,6 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) usb_wakeup_set(mtk, false); xhci_mtk_clks_enable(mtk); - xhci_mtk_phy_power_on(mtk); xhci_mtk_host_enable(mtk); xhci_dbg(xhci, "%s: restart port polling\n", __func__); -- cgit v1.2.1 From 27b3df4139d5589c366196b6ade79f8ea0d32b42 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:07 +0100 Subject: usb: host: ehci-platform: remove custom USB PHY handling The new PHY wrapper is now wired up in the core HCD code. This means that PHYs are now controlled (initialized, enabled, disabled, exited) without requiring any host-driver specific code. Remove the custom USB PHY handling from the ehci-platform driver as the core HCD code now handles this. Signed-off-by: Martin Blumenstingl Acked-by: Alan Stern Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-platform.c | 55 +++------------------------------------- 1 file changed, 4 insertions(+), 51 deletions(-) diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index b91eea8c73ae..4c306fb6b069 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -27,7 +27,6 @@ #include #include #include -#include #include #include #include @@ -44,8 +43,6 @@ struct ehci_platform_priv { struct clk *clks[EHCI_MAX_CLKS]; struct reset_control *rsts; - struct phy **phys; - int num_phys; bool reset_on_resume; }; @@ -80,7 +77,7 @@ static int ehci_platform_power_on(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); - int clk, ret, phy_num; + int clk, ret; for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) { ret = clk_prepare_enable(priv->clks[clk]); @@ -88,24 +85,8 @@ static int ehci_platform_power_on(struct platform_device *dev) goto err_disable_clks; } - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - ret = phy_init(priv->phys[phy_num]); - if (ret) - goto err_exit_phy; - ret = phy_power_on(priv->phys[phy_num]); - if (ret) { - phy_exit(priv->phys[phy_num]); - goto err_exit_phy; - } - } - return 0; -err_exit_phy: - while (--phy_num >= 0) { - phy_power_off(priv->phys[phy_num]); - phy_exit(priv->phys[phy_num]); - } err_disable_clks: while (--clk >= 0) clk_disable_unprepare(priv->clks[clk]); @@ -117,12 +98,7 @@ static void ehci_platform_power_off(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); - int clk, phy_num; - - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - phy_power_off(priv->phys[phy_num]); - phy_exit(priv->phys[phy_num]); - } + int clk; for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--) if (priv->clks[clk]) @@ -149,7 +125,7 @@ static int ehci_platform_probe(struct platform_device *dev) struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); struct ehci_platform_priv *priv; struct ehci_hcd *ehci; - int err, irq, phy_num, clk = 0; + int err, irq, clk = 0; if (usb_disabled()) return -ENODEV; @@ -202,29 +178,6 @@ static int ehci_platform_probe(struct platform_device *dev) "has-transaction-translator")) hcd->has_tt = 1; - priv->num_phys = of_count_phandle_with_args(dev->dev.of_node, - "phys", "#phy-cells"); - - if (priv->num_phys > 0) { - priv->phys = devm_kcalloc(&dev->dev, priv->num_phys, - sizeof(struct phy *), GFP_KERNEL); - if (!priv->phys) - return -ENOMEM; - } else - priv->num_phys = 0; - - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - priv->phys[phy_num] = devm_of_phy_get_by_index( - &dev->dev, dev->dev.of_node, phy_num); - if (IS_ERR(priv->phys[phy_num])) { - err = PTR_ERR(priv->phys[phy_num]); - goto err_put_hcd; - } else { - /* Avoiding phy_get() in usb_add_hcd() */ - hcd->skip_phy_initialization = 1; - } - } - for (clk = 0; clk < EHCI_MAX_CLKS; clk++) { priv->clks[clk] = of_clk_get(dev->dev.of_node, clk); if (IS_ERR(priv->clks[clk])) { @@ -306,7 +259,7 @@ err_reset: err_put_clks: while (--clk >= 0) clk_put(priv->clks[clk]); -err_put_hcd: + if (pdata == &ehci_platform_defaults) dev->dev.platform_data = NULL; -- cgit v1.2.1 From 1255dfd18799c28b4178e91adecaffce3c1110a3 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:08 +0100 Subject: usb: host: ohci-platform: remove custom USB PHY handling The new PHY wrapper is now wired up in the core HCD code. This means that PHYs are now controlled (initialized, enabled, disabled, exited) without requiring any host-driver specific code. Remove the custom USB PHY handling from the ohci-platform driver as the core HCD code now handles this. Signed-off-by: Martin Blumenstingl Acked-by: Alan Stern Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-platform.c | 56 ++++------------------------------------ 1 file changed, 5 insertions(+), 51 deletions(-) diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c index 62ef36a9333f..65a1c3fdc88c 100644 --- a/drivers/usb/host/ohci-platform.c +++ b/drivers/usb/host/ohci-platform.c @@ -21,7 +21,7 @@ #include #include #include -#include +#include #include #include #include @@ -38,8 +38,6 @@ struct ohci_platform_priv { struct clk *clks[OHCI_MAX_CLKS]; struct reset_control *resets; - struct phy **phys; - int num_phys; }; static const char hcd_name[] = "ohci-platform"; @@ -48,7 +46,7 @@ static int ohci_platform_power_on(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd); - int clk, ret, phy_num; + int clk, ret; for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) { ret = clk_prepare_enable(priv->clks[clk]); @@ -56,24 +54,8 @@ static int ohci_platform_power_on(struct platform_device *dev) goto err_disable_clks; } - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - ret = phy_init(priv->phys[phy_num]); - if (ret) - goto err_exit_phy; - ret = phy_power_on(priv->phys[phy_num]); - if (ret) { - phy_exit(priv->phys[phy_num]); - goto err_exit_phy; - } - } - return 0; -err_exit_phy: - while (--phy_num >= 0) { - phy_power_off(priv->phys[phy_num]); - phy_exit(priv->phys[phy_num]); - } err_disable_clks: while (--clk >= 0) clk_disable_unprepare(priv->clks[clk]); @@ -85,12 +67,7 @@ static void ohci_platform_power_off(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd); - int clk, phy_num; - - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - phy_power_off(priv->phys[phy_num]); - phy_exit(priv->phys[phy_num]); - } + int clk; for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--) if (priv->clks[clk]) @@ -117,7 +94,7 @@ static int ohci_platform_probe(struct platform_device *dev) struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev); struct ohci_platform_priv *priv; struct ohci_hcd *ohci; - int err, irq, phy_num, clk = 0; + int err, irq, clk = 0; if (usb_disabled()) return -ENODEV; @@ -169,29 +146,6 @@ static int ohci_platform_probe(struct platform_device *dev) of_property_read_u32(dev->dev.of_node, "num-ports", &ohci->num_ports); - priv->num_phys = of_count_phandle_with_args(dev->dev.of_node, - "phys", "#phy-cells"); - - if (priv->num_phys > 0) { - priv->phys = devm_kcalloc(&dev->dev, priv->num_phys, - sizeof(struct phy *), GFP_KERNEL); - if (!priv->phys) - return -ENOMEM; - } else - priv->num_phys = 0; - - for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { - priv->phys[phy_num] = devm_of_phy_get_by_index( - &dev->dev, dev->dev.of_node, phy_num); - if (IS_ERR(priv->phys[phy_num])) { - err = PTR_ERR(priv->phys[phy_num]); - goto err_put_hcd; - } else { - /* Avoiding phy_get() in usb_add_hcd() */ - hcd->skip_phy_initialization = 1; - } - } - for (clk = 0; clk < OHCI_MAX_CLKS; clk++) { priv->clks[clk] = of_clk_get(dev->dev.of_node, clk); if (IS_ERR(priv->clks[clk])) { @@ -277,7 +231,7 @@ err_reset: err_put_clks: while (--clk >= 0) clk_put(priv->clks[clk]); -err_put_hcd: + if (pdata == &ohci_platform_defaults) dev->dev.platform_data = NULL; -- cgit v1.2.1 From ad70f937e9d0bdc580e390db3a047f9e58863b6e Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 22:43:09 +0100 Subject: usb: core: hcd: remove support for initializing a single PHY With the new PHY wrapper in place we can now handle multiple PHYs. Remove the code which handles only one generic PHY as this is now covered (with support for multiple PHYs as well as suspend/resume support) by the new PHY wrapper. Signed-off-by: Martin Blumenstingl Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 37 ------------------------------------- include/linux/usb/hcd.h | 1 - 2 files changed, 38 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 32797c25ac3b..5a92d8f7c484 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2757,30 +2757,6 @@ int usb_add_hcd(struct usb_hcd *hcd, } } - if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->skip_phy_initialization) { - struct phy *phy = phy_get(hcd->self.sysdev, "usb"); - - if (IS_ERR(phy)) { - retval = PTR_ERR(phy); - if (retval == -EPROBE_DEFER) - goto err_phy; - } else { - retval = phy_init(phy); - if (retval) { - phy_put(phy); - goto err_phy; - } - retval = phy_power_on(phy); - if (retval) { - phy_exit(phy); - phy_put(phy); - goto err_phy; - } - hcd->phy = phy; - hcd->remove_phy = 1; - } - } - if (!hcd->skip_phy_initialization) { hcd->phy_roothub = usb_phy_roothub_init(hcd->self.sysdev); if (IS_ERR(hcd->phy_roothub)) { @@ -2961,13 +2937,6 @@ err_create_buf: err_usb_phy_roothub_power_on: usb_phy_roothub_exit(hcd->phy_roothub); err_phy_roothub_init: - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { - phy_power_off(hcd->phy); - phy_exit(hcd->phy); - phy_put(hcd->phy); - hcd->phy = NULL; - } -err_phy: if (hcd->remove_phy && hcd->usb_phy) { usb_phy_shutdown(hcd->usb_phy); usb_put_phy(hcd->usb_phy); @@ -3048,12 +3017,6 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_phy_roothub_power_off(hcd->phy_roothub); usb_phy_roothub_exit(hcd->phy_roothub); - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { - phy_power_off(hcd->phy); - phy_exit(hcd->phy); - phy_put(hcd->phy); - hcd->phy = NULL; - } if (hcd->remove_phy && hcd->usb_phy) { usb_phy_shutdown(hcd->usb_phy); usb_put_phy(hcd->usb_phy); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index a042675e03ba..aef50cb2ed1b 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -103,7 +103,6 @@ struct usb_hcd { * other external phys should be software-transparent */ struct usb_phy *usb_phy; - struct phy *phy; struct usb_phy_roothub *phy_roothub; /* Flags that need to be manipulated atomically because they can -- cgit v1.2.1 From cf6e06cddf29722a4e54b9d66df24c381b231600 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 2 Mar 2018 11:20:47 +0100 Subject: usb: typec: Start using ERR_PTR In order to allow the USB Type-C Class driver take care of things like muxes and other possible dependencies for the port drivers, returning ERR_PTR instead of NULL from the registration functions in case of failure. The reason for taking over control of the muxes for example is because handling them in the port drivers would be just boilerplate. Signed-off-by: Heikki Krogerus Reviewed-by: Hans de Goede Reviewed-by: Guenter Roeck Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm.c | 16 +++++++++------- drivers/usb/typec/tps6598x.c | 15 ++++++++------- drivers/usb/typec/typec.c | 44 +++++++++++++++++++++---------------------- drivers/usb/typec/ucsi/ucsi.c | 31 ++++++++++++++++++------------ 4 files changed, 58 insertions(+), 48 deletions(-) diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index a163ba55b061..cd48a99ee913 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -1033,7 +1033,7 @@ static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, break; case CMDT_RSP_ACK: /* silently drop message if we are not connected */ - if (!port->partner) + if (IS_ERR_OR_NULL(port->partner)) break; switch (cmd) { @@ -3732,8 +3732,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->port_type = tcpc->config->type; port->typec_port = typec_register_port(port->dev, &port->typec_caps); - if (!port->typec_port) { - err = -ENOMEM; + if (IS_ERR(port->typec_port)) { + err = PTR_ERR(port->typec_port); goto out_destroy_wq; } @@ -3742,15 +3742,17 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) i = 0; while (paltmode->svid && i < ARRAY_SIZE(port->port_altmode)) { - port->port_altmode[i] = - typec_port_register_altmode(port->typec_port, - paltmode); - if (!port->port_altmode[i]) { + struct typec_altmode *alt; + + alt = typec_port_register_altmode(port->typec_port, + paltmode); + if (IS_ERR(alt)) { tcpm_log(port, "%s: failed to register port alternate mode 0x%x", dev_name(dev), paltmode->svid); break; } + port->port_altmode[i] = alt; i++; paltmode++; } diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 2719f5d382f7..37a15c14a6c6 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -158,15 +158,15 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status) desc.identity = &tps->partner_identity; } - tps->partner = typec_register_partner(tps->port, &desc); - if (!tps->partner) - return -ENODEV; - typec_set_pwr_opmode(tps->port, mode); typec_set_pwr_role(tps->port, TPS_STATUS_PORTROLE(status)); typec_set_vconn_role(tps->port, TPS_STATUS_VCONN(status)); typec_set_data_role(tps->port, TPS_STATUS_DATAROLE(status)); + tps->partner = typec_register_partner(tps->port, &desc); + if (IS_ERR(tps->partner)) + return PTR_ERR(tps->partner); + if (desc.identity) typec_partner_set_identity(tps->partner); @@ -175,7 +175,8 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status) static void tps6598x_disconnect(struct tps6598x *tps, u32 status) { - typec_unregister_partner(tps->partner); + if (!IS_ERR(tps->partner)) + typec_unregister_partner(tps->partner); tps->partner = NULL; typec_set_pwr_opmode(tps->port, TYPEC_PWR_MODE_USB); typec_set_pwr_role(tps->port, TPS_STATUS_PORTROLE(status)); @@ -418,8 +419,8 @@ static int tps6598x_probe(struct i2c_client *client) tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; tps->port = typec_register_port(&client->dev, &tps->typec_cap); - if (!tps->port) - return -ENODEV; + if (IS_ERR(tps->port)) + return PTR_ERR(tps->port); if (status & TPS_STATUS_PLUG_PRESENT) { ret = tps6598x_connect(tps, status); diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c index 735726ced602..dc28ad868d93 100644 --- a/drivers/usb/typec/typec.c +++ b/drivers/usb/typec/typec.c @@ -386,7 +386,7 @@ typec_register_altmode(struct device *parent, alt = kzalloc(sizeof(*alt), GFP_KERNEL); if (!alt) - return NULL; + return ERR_PTR(-ENOMEM); alt->svid = desc->svid; alt->n_modes = desc->n_modes; @@ -402,7 +402,7 @@ typec_register_altmode(struct device *parent, dev_err(parent, "failed to register alternate mode (%d)\n", ret); put_device(&alt->dev); - return NULL; + return ERR_PTR(ret); } return alt; @@ -417,7 +417,7 @@ typec_register_altmode(struct device *parent, */ void typec_unregister_altmode(struct typec_altmode *alt) { - if (alt) + if (!IS_ERR_OR_NULL(alt)) device_unregister(&alt->dev); } EXPORT_SYMBOL_GPL(typec_unregister_altmode); @@ -509,7 +509,7 @@ EXPORT_SYMBOL_GPL(typec_partner_register_altmode); * * Registers a device for USB Type-C Partner described in @desc. * - * Returns handle to the partner on success or NULL on failure. + * Returns handle to the partner on success or ERR_PTR on failure. */ struct typec_partner *typec_register_partner(struct typec_port *port, struct typec_partner_desc *desc) @@ -519,7 +519,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, partner = kzalloc(sizeof(*partner), GFP_KERNEL); if (!partner) - return NULL; + return ERR_PTR(-ENOMEM); partner->usb_pd = desc->usb_pd; partner->accessory = desc->accessory; @@ -542,7 +542,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, if (ret) { dev_err(&port->dev, "failed to register partner (%d)\n", ret); put_device(&partner->dev); - return NULL; + return ERR_PTR(ret); } return partner; @@ -557,7 +557,7 @@ EXPORT_SYMBOL_GPL(typec_register_partner); */ void typec_unregister_partner(struct typec_partner *partner) { - if (partner) + if (!IS_ERR_OR_NULL(partner)) device_unregister(&partner->dev); } EXPORT_SYMBOL_GPL(typec_unregister_partner); @@ -587,7 +587,7 @@ static const struct device_type typec_plug_dev_type = { * the plug lists in response to Discover Modes command need to be listed in an * array in @desc. * - * Returns handle to the alternate mode on success or NULL on failure. + * Returns handle to the alternate mode on success or ERR_PTR on failure. */ struct typec_altmode * typec_plug_register_altmode(struct typec_plug *plug, @@ -606,7 +606,7 @@ EXPORT_SYMBOL_GPL(typec_plug_register_altmode); * Cable Plug represents a plug with electronics in it that can response to USB * Power Delivery SOP Prime or SOP Double Prime packages. * - * Returns handle to the cable plug on success or NULL on failure. + * Returns handle to the cable plug on success or ERR_PTR on failure. */ struct typec_plug *typec_register_plug(struct typec_cable *cable, struct typec_plug_desc *desc) @@ -617,7 +617,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, plug = kzalloc(sizeof(*plug), GFP_KERNEL); if (!plug) - return NULL; + return ERR_PTR(-ENOMEM); sprintf(name, "plug%d", desc->index); @@ -631,7 +631,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, if (ret) { dev_err(&cable->dev, "failed to register plug (%d)\n", ret); put_device(&plug->dev); - return NULL; + return ERR_PTR(ret); } return plug; @@ -646,7 +646,7 @@ EXPORT_SYMBOL_GPL(typec_register_plug); */ void typec_unregister_plug(struct typec_plug *plug) { - if (plug) + if (!IS_ERR_OR_NULL(plug)) device_unregister(&plug->dev); } EXPORT_SYMBOL_GPL(typec_unregister_plug); @@ -724,7 +724,7 @@ EXPORT_SYMBOL_GPL(typec_cable_set_identity); * Registers a device for USB Type-C Cable described in @desc. The cable will be * parent for the optional cable plug devises. * - * Returns handle to the cable on success or NULL on failure. + * Returns handle to the cable on success or ERR_PTR on failure. */ struct typec_cable *typec_register_cable(struct typec_port *port, struct typec_cable_desc *desc) @@ -734,7 +734,7 @@ struct typec_cable *typec_register_cable(struct typec_port *port, cable = kzalloc(sizeof(*cable), GFP_KERNEL); if (!cable) - return NULL; + return ERR_PTR(-ENOMEM); cable->type = desc->type; cable->active = desc->active; @@ -757,7 +757,7 @@ struct typec_cable *typec_register_cable(struct typec_port *port, if (ret) { dev_err(&port->dev, "failed to register cable (%d)\n", ret); put_device(&cable->dev); - return NULL; + return ERR_PTR(ret); } return cable; @@ -772,7 +772,7 @@ EXPORT_SYMBOL_GPL(typec_register_cable); */ void typec_unregister_cable(struct typec_cable *cable) { - if (cable) + if (!IS_ERR_OR_NULL(cable)) device_unregister(&cable->dev); } EXPORT_SYMBOL_GPL(typec_unregister_cable); @@ -1256,7 +1256,7 @@ EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); * This routine is used to register an alternate mode that @port is capable of * supporting. * - * Returns handle to the alternate mode on success or NULL on failure. + * Returns handle to the alternate mode on success or ERR_PTR on failure. */ struct typec_altmode * typec_port_register_altmode(struct typec_port *port, @@ -1273,7 +1273,7 @@ EXPORT_SYMBOL_GPL(typec_port_register_altmode); * * Registers a device for USB Type-C Port described in @cap. * - * Returns handle to the port on success or NULL on failure. + * Returns handle to the port on success or ERR_PTR on failure. */ struct typec_port *typec_register_port(struct device *parent, const struct typec_capability *cap) @@ -1285,12 +1285,12 @@ struct typec_port *typec_register_port(struct device *parent, port = kzalloc(sizeof(*port), GFP_KERNEL); if (!port) - return NULL; + return ERR_PTR(-ENOMEM); id = ida_simple_get(&typec_index_ida, 0, 0, GFP_KERNEL); if (id < 0) { kfree(port); - return NULL; + return ERR_PTR(id); } if (cap->type == TYPEC_PORT_DFP) @@ -1326,7 +1326,7 @@ struct typec_port *typec_register_port(struct device *parent, if (ret) { dev_err(parent, "failed to register port (%d)\n", ret); put_device(&port->dev); - return NULL; + return ERR_PTR(ret); } return port; @@ -1341,7 +1341,7 @@ EXPORT_SYMBOL_GPL(typec_register_port); */ void typec_unregister_port(struct typec_port *port) { - if (port) + if (!IS_ERR_OR_NULL(port)) device_unregister(&port->dev); } EXPORT_SYMBOL_GPL(typec_unregister_port); diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 79046fe66426..69d544cfcd45 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -260,38 +260,45 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con) static int ucsi_register_partner(struct ucsi_connector *con) { - struct typec_partner_desc partner; + struct typec_partner_desc desc; + struct typec_partner *partner; if (con->partner) return 0; - memset(&partner, 0, sizeof(partner)); + memset(&desc, 0, sizeof(desc)); switch (con->status.partner_type) { case UCSI_CONSTAT_PARTNER_TYPE_DEBUG: - partner.accessory = TYPEC_ACCESSORY_DEBUG; + desc.accessory = TYPEC_ACCESSORY_DEBUG; break; case UCSI_CONSTAT_PARTNER_TYPE_AUDIO: - partner.accessory = TYPEC_ACCESSORY_AUDIO; + desc.accessory = TYPEC_ACCESSORY_AUDIO; break; default: break; } - partner.usb_pd = con->status.pwr_op_mode == UCSI_CONSTAT_PWR_OPMODE_PD; + desc.usb_pd = con->status.pwr_op_mode == UCSI_CONSTAT_PWR_OPMODE_PD; - con->partner = typec_register_partner(con->port, &partner); - if (!con->partner) { - dev_err(con->ucsi->dev, "con%d: failed to register partner\n", - con->num); - return -ENODEV; + partner = typec_register_partner(con->port, &desc); + if (IS_ERR(partner)) { + dev_err(con->ucsi->dev, + "con%d: failed to register partner (%ld)\n", con->num, + PTR_ERR(partner)); + return PTR_ERR(partner); } + con->partner = partner; + return 0; } static void ucsi_unregister_partner(struct ucsi_connector *con) { + if (!con->partner) + return; + typec_unregister_partner(con->partner); con->partner = NULL; } @@ -606,8 +613,8 @@ static int ucsi_register_port(struct ucsi *ucsi, int index) /* Register the connector */ con->port = typec_register_port(ucsi->dev, cap); - if (!con->port) - return -ENODEV; + if (IS_ERR(con->port)) + return PTR_ERR(con->port); /* Get the status */ UCSI_CMD_GET_CONNECTOR_STATUS(ctrl, con->num); -- cgit v1.2.1 From b27560e4d9e5240b5544c9c5650c7442e482646e Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Thu, 8 Mar 2018 13:37:05 +0800 Subject: usb: core: Add "quirks" parameter for usbcore Trying quirks in usbcore needs to rebuild the driver or the entire kernel if it's builtin. It can save a lot of time if usbcore has similar ability like "usbhid.quirks=" and "usb-storage.quirks=". Rename the original quirk detection function to "static" as we introduce this new "dynamic" function. Now users can use "usbcore.quirks=" as short term workaround before the next kernel release. Also, the quirk parameter can XOR the builtin quirks for debugging purpose. This is inspired by usbhid and usb-storage. Signed-off-by: Kai-Heng Feng Signed-off-by: Greg Kroah-Hartman --- Documentation/admin-guide/kernel-parameters.txt | 55 ++++++++ drivers/usb/core/quirks.c | 177 +++++++++++++++++++++++- drivers/usb/core/usb.c | 1 + drivers/usb/core/usb.h | 1 + 4 files changed, 229 insertions(+), 5 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1d1d53f85ddd..70a7398c20e2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4368,6 +4368,61 @@ usbcore.nousb [USB] Disable the USB subsystem + usbcore.quirks= + [USB] A list of quirks entries to supplement or + override the built-in usb core quirk list. List + entries are separated by commas. Each entry has + the form VID:PID:Flags where VID and PID are Vendor + and Product ID values (4-digit hex numbers) and + Flags is a set of characters, each corresponding + to a common usb core quirk flag as follows: + a = USB_QUIRK_STRING_FETCH_255 (string + descriptors must not be fetched using + a 255-byte read); + b = USB_QUIRK_RESET_RESUME (device can't resume + correctly so reset it instead); + c = USB_QUIRK_NO_SET_INTF (device can't handle + Set-Interface requests); + d = USB_QUIRK_CONFIG_INTF_STRINGS (device can't + handle its Configuration or Interface + strings); + e = USB_QUIRK_RESET (device can't be reset + (e.g morph devices), don't use reset); + f = USB_QUIRK_HONOR_BNUMINTERFACES (device has + more interface descriptions than the + bNumInterfaces count, and can't handle + talking to these interfaces); + g = USB_QUIRK_DELAY_INIT (device needs a pause + during initialization, after we read + the device descriptor); + h = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL (For + high speed and super speed interrupt + endpoints, the USB 2.0 and USB 3.0 spec + require the interval in microframes (1 + microframe = 125 microseconds) to be + calculated as interval = 2 ^ + (bInterval-1). + Devices with this quirk report their + bInterval as the result of this + calculation instead of the exponent + variable used in the calculation); + i = USB_QUIRK_DEVICE_QUALIFIER (device can't + handle device_qualifier descriptor + requests); + j = USB_QUIRK_IGNORE_REMOTE_WAKEUP (device + generates spurious wakeup, ignore + remote wakeup capability); + k = USB_QUIRK_NO_LPM (device can't handle Link + Power Management); + l = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL + (Device reports its bInterval as linear + frames instead of the USB 2.0 + calculation); + m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs + to be disconnected before suspend to + prevent spurious wakeup) + Example: quirks=0781:5580:bk,0a5c:5834:gij + usbhid.mousepoll= [USBHID] The interval which mice are to be polled at. diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index f4a548471f0f..42faaeead81b 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -11,6 +11,143 @@ #include #include "usb.h" +struct quirk_entry { + u16 vid; + u16 pid; + u32 flags; +}; + +static DEFINE_MUTEX(quirk_mutex); + +static struct quirk_entry *quirk_list; +static unsigned int quirk_count; + +static char quirks_param[128]; + +static int quirks_param_set(const char *val, const struct kernel_param *kp) +{ + char *p, *field; + u16 vid, pid; + u32 flags; + size_t i; + + mutex_lock(&quirk_mutex); + + if (!val || !*val) { + quirk_count = 0; + kfree(quirk_list); + quirk_list = NULL; + goto unlock; + } + + for (quirk_count = 1, i = 0; val[i]; i++) + if (val[i] == ',') + quirk_count++; + + if (quirk_list) { + kfree(quirk_list); + quirk_list = NULL; + } + + quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry), + GFP_KERNEL); + if (!quirk_list) { + mutex_unlock(&quirk_mutex); + return -ENOMEM; + } + + for (i = 0, p = (char *)val; p && *p;) { + /* Each entry consists of VID:PID:flags */ + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &vid)) + break; + + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &pid)) + break; + + field = strsep(&p, ","); + if (!field || !*field) + break; + + /* Collect the flags */ + for (flags = 0; *field; field++) { + switch (*field) { + case 'a': + flags |= USB_QUIRK_STRING_FETCH_255; + break; + case 'b': + flags |= USB_QUIRK_RESET_RESUME; + break; + case 'c': + flags |= USB_QUIRK_NO_SET_INTF; + break; + case 'd': + flags |= USB_QUIRK_CONFIG_INTF_STRINGS; + break; + case 'e': + flags |= USB_QUIRK_RESET; + break; + case 'f': + flags |= USB_QUIRK_HONOR_BNUMINTERFACES; + break; + case 'g': + flags |= USB_QUIRK_DELAY_INIT; + break; + case 'h': + flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL; + break; + case 'i': + flags |= USB_QUIRK_DEVICE_QUALIFIER; + break; + case 'j': + flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP; + break; + case 'k': + flags |= USB_QUIRK_NO_LPM; + break; + case 'l': + flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL; + break; + case 'm': + flags |= USB_QUIRK_DISCONNECT_SUSPEND; + break; + /* Ignore unrecognized flag characters */ + } + } + + quirk_list[i++] = (struct quirk_entry) + { .vid = vid, .pid = pid, .flags = flags }; + } + + if (i < quirk_count) + quirk_count = i; + +unlock: + mutex_unlock(&quirk_mutex); + + return param_set_copystring(val, kp); +} + +static const struct kernel_param_ops quirks_param_ops = { + .set = quirks_param_set, + .get = param_get_string, +}; + +static struct kparam_string quirks_param_string = { + .maxlen = sizeof(quirks_param), + .string = quirks_param, +}; + +module_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644); +MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks"); + /* Lists of quirky USB devices, split in device quirks and interface quirks. * Device quirks are applied at the very beginning of the enumeration process, * right after reading the device descriptor. They can thus only match on device @@ -320,8 +457,8 @@ static int usb_amd_resume_quirk(struct usb_device *udev) return 0; } -static u32 __usb_detect_quirks(struct usb_device *udev, - const struct usb_device_id *id) +static u32 usb_detect_static_quirks(struct usb_device *udev, + const struct usb_device_id *id) { u32 quirks = 0; @@ -339,21 +476,43 @@ static u32 __usb_detect_quirks(struct usb_device *udev, return quirks; } +static u32 usb_detect_dynamic_quirks(struct usb_device *udev) +{ + u16 vid = le16_to_cpu(udev->descriptor.idVendor); + u16 pid = le16_to_cpu(udev->descriptor.idProduct); + int i, flags = 0; + + mutex_lock(&quirk_mutex); + + for (i = 0; i < quirk_count; i++) { + if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { + flags = quirk_list[i].flags; + break; + } + } + + mutex_unlock(&quirk_mutex); + + return flags; +} + /* * Detect any quirks the device has, and do any housekeeping for it if needed. */ void usb_detect_quirks(struct usb_device *udev) { - udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); + udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); /* * Pixart-based mice would trigger remote wakeup issue on AMD * Yangtze chipset, so set them as RESET_RESUME flag. */ if (usb_amd_resume_quirk(udev)) - udev->quirks |= __usb_detect_quirks(udev, + udev->quirks |= usb_detect_static_quirks(udev, usb_amd_resume_quirk_list); + udev->quirks ^= usb_detect_dynamic_quirks(udev); + if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", udev->quirks); @@ -372,7 +531,7 @@ void usb_detect_interface_quirks(struct usb_device *udev) { u32 quirks; - quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); + quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); if (quirks == 0) return; @@ -380,3 +539,11 @@ void usb_detect_interface_quirks(struct usb_device *udev) quirks); udev->quirks |= quirks; } + +void usb_release_quirk_list(void) +{ + mutex_lock(&quirk_mutex); + kfree(quirk_list); + quirk_list = NULL; + mutex_unlock(&quirk_mutex); +} diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 2f5fbc56a9dd..0adb6345ff2e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -1259,6 +1259,7 @@ static void __exit usb_exit(void) if (usb_disabled()) return; + usb_release_quirk_list(); usb_deregister_device_driver(&usb_generic_driver); usb_major_cleanup(); usb_deregister(&usbfs_driver); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 149cc7480971..546a2219454b 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -36,6 +36,7 @@ extern void usb_deauthorize_interface(struct usb_interface *); extern void usb_authorize_interface(struct usb_interface *); extern void usb_detect_quirks(struct usb_device *udev); extern void usb_detect_interface_quirks(struct usb_device *udev); +extern void usb_release_quirk_list(void); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, -- cgit v1.2.1 From 8f94390226487bcb86c554ddc12eef0d27bdec3b Mon Sep 17 00:00:00 2001 From: ShuFan Lee Date: Tue, 6 Mar 2018 09:50:32 +0800 Subject: staging: typec: handle vendor defined part and modify drp toggling flow Handle vendor defined behavior in tcpci_init, tcpci_set_vconn, tcpci_start_drp_toggling and export tcpci_irq. More operations can be extended in tcpci_data if needed. According to TCPCI specification, 4.4.5.2 ROLE_CONTROL, TCPC shall not start DRP toggling until subsequently the TCPM writes to the COMMAND register to start DRP toggling. DRP toggling flow is changed as following: - Write DRP = 1, Rp level and RC.CCx to Rd/Rd or Rp/Rp - Set LOOK4CONNECTION command Signed-off-by: ShuFan Lee Reviewed-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- drivers/staging/typec/tcpci.c | 127 +++++++++++++++++++++++++++++++++--------- drivers/staging/typec/tcpci.h | 15 +++++ 2 files changed, 116 insertions(+), 26 deletions(-) diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c index 9bd4412356c9..804374056a1e 100644 --- a/drivers/staging/typec/tcpci.c +++ b/drivers/staging/typec/tcpci.c @@ -21,7 +21,6 @@ struct tcpci { struct device *dev; - struct i2c_client *client; struct tcpm_port *port; @@ -30,6 +29,12 @@ struct tcpci { bool controls_vbus; struct tcpc_dev tcpc; + struct tcpci_data *data; +}; + +struct tcpci_chip { + struct tcpci *tcpci; + struct tcpci_data data; }; static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc) @@ -37,8 +42,7 @@ static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc) return container_of(tcpc, struct tcpci, tcpc); } -static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, - u16 *val) +static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, u16 *val) { return regmap_raw_read(tcpci->regmap, reg, val, sizeof(u16)); } @@ -98,9 +102,17 @@ static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc, enum typec_cc_status cc) { + int ret; struct tcpci *tcpci = tcpc_to_tcpci(tcpc); unsigned int reg = TCPC_ROLE_CTRL_DRP; + /* Handle vendor drp toggling */ + if (tcpci->data->start_drp_toggling) { + ret = tcpci->data->start_drp_toggling(tcpci, tcpci->data, cc); + if (ret < 0) + return ret; + } + switch (cc) { default: case TYPEC_CC_RP_DEF: @@ -117,7 +129,17 @@ static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc, break; } - return regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (cc == TYPEC_CC_RD) + reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + else + reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT); + ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + return regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_LOOK4CONNECTION); } static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink) @@ -178,6 +200,13 @@ static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable) struct tcpci *tcpci = tcpc_to_tcpci(tcpc); int ret; + /* Handle vendor set vconn */ + if (tcpci->data->set_vconn) { + ret = tcpci->data->set_vconn(tcpci, tcpci->data, enable); + if (ret < 0) + return ret; + } + ret = regmap_write(tcpci->regmap, TCPC_POWER_CTRL, enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); if (ret < 0) @@ -323,6 +352,13 @@ static int tcpci_init(struct tcpc_dev *tcpc) if (time_after(jiffies, timeout)) return -ETIMEDOUT; + /* Handle vendor init */ + if (tcpci->data->init) { + ret = tcpci->data->init(tcpci, tcpci->data); + if (ret < 0) + return ret; + } + /* Clear all events */ ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff); if (ret < 0) @@ -344,9 +380,8 @@ static int tcpci_init(struct tcpc_dev *tcpc) return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg); } -static irqreturn_t tcpci_irq(int irq, void *dev_id) +irqreturn_t tcpci_irq(struct tcpci *tcpci) { - struct tcpci *tcpci = dev_id; u16 status; tcpci_read16(tcpci, TCPC_ALERT, &status); @@ -412,6 +447,14 @@ static irqreturn_t tcpci_irq(int irq, void *dev_id) return IRQ_HANDLED; } +EXPORT_SYMBOL_GPL(tcpci_irq); + +static irqreturn_t _tcpci_irq(int irq, void *dev_id) +{ + struct tcpci *tcpci = dev_id; + + return tcpci_irq(tcpci); +} static const struct regmap_config tcpci_regmap_config = { .reg_bits = 8, @@ -435,22 +478,18 @@ static int tcpci_parse_config(struct tcpci *tcpci) return 0; } -static int tcpci_probe(struct i2c_client *client, - const struct i2c_device_id *i2c_id) +struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data) { struct tcpci *tcpci; int err; - tcpci = devm_kzalloc(&client->dev, sizeof(*tcpci), GFP_KERNEL); + tcpci = devm_kzalloc(dev, sizeof(*tcpci), GFP_KERNEL); if (!tcpci) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - tcpci->client = client; - tcpci->dev = &client->dev; - i2c_set_clientdata(client, tcpci); - tcpci->regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config); - if (IS_ERR(tcpci->regmap)) - return PTR_ERR(tcpci->regmap); + tcpci->dev = dev; + tcpci->data = data; + tcpci->regmap = data->regmap; tcpci->tcpc.init = tcpci_init; tcpci->tcpc.get_vbus = tcpci_get_vbus; @@ -467,27 +506,63 @@ static int tcpci_probe(struct i2c_client *client, err = tcpci_parse_config(tcpci); if (err < 0) - return err; + return ERR_PTR(err); + + tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc); + if (PTR_ERR_OR_ZERO(tcpci->port)) + return ERR_CAST(tcpci->port); + + return tcpci; +} +EXPORT_SYMBOL_GPL(tcpci_register_port); + +void tcpci_unregister_port(struct tcpci *tcpci) +{ + tcpm_unregister_port(tcpci->port); +} +EXPORT_SYMBOL_GPL(tcpci_unregister_port); + +static int tcpci_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + struct tcpci_chip *chip; + int err; + u16 val = 0; - /* Disable chip interrupts */ - tcpci_write16(tcpci, TCPC_ALERT_MASK, 0); + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->data.regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config); + if (IS_ERR(chip->data.regmap)) + return PTR_ERR(chip->data.regmap); - err = devm_request_threaded_irq(tcpci->dev, client->irq, NULL, - tcpci_irq, + /* Disable chip interrupts before requesting irq */ + err = regmap_raw_write(chip->data.regmap, TCPC_ALERT_MASK, &val, + sizeof(u16)); + if (err < 0) + return err; + + err = devm_request_threaded_irq(&client->dev, client->irq, NULL, + _tcpci_irq, IRQF_ONESHOT | IRQF_TRIGGER_LOW, - dev_name(tcpci->dev), tcpci); + dev_name(&client->dev), chip); if (err < 0) return err; - tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc); - return PTR_ERR_OR_ZERO(tcpci->port); + chip->tcpci = tcpci_register_port(&client->dev, &chip->data); + if (PTR_ERR_OR_ZERO(chip->tcpci)) + return PTR_ERR(chip->tcpci); + + i2c_set_clientdata(client, chip); + return 0; } static int tcpci_remove(struct i2c_client *client) { - struct tcpci *tcpci = i2c_get_clientdata(client); + struct tcpci_chip *chip = i2c_get_clientdata(client); - tcpm_unregister_port(tcpci->port); + tcpci_unregister_port(chip->tcpci); return 0; } diff --git a/drivers/staging/typec/tcpci.h b/drivers/staging/typec/tcpci.h index fdfb06cc3b86..a2c1754ca222 100644 --- a/drivers/staging/typec/tcpci.h +++ b/drivers/staging/typec/tcpci.h @@ -59,6 +59,7 @@ #define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) #define TCPC_CC_STATUS 0x1d +#define TCPC_CC_STATUS_DRPRST BIT(5) #define TCPC_CC_STATUS_TERM BIT(4) #define TCPC_CC_STATUS_CC2_SHIFT 2 #define TCPC_CC_STATUS_CC2_MASK 0x3 @@ -121,4 +122,18 @@ #define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 #define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 +struct tcpci; +struct tcpci_data { + struct regmap *regmap; + int (*init)(struct tcpci *tcpci, struct tcpci_data *data); + int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data, + bool enable); + int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data, + enum typec_cc_status cc); +}; + +struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data); +void tcpci_unregister_port(struct tcpci *tcpci); +irqreturn_t tcpci_irq(struct tcpci *tcpci); + #endif /* __LINUX_USB_TCPCI_H */ -- cgit v1.2.1 From d7119224bfe6e8efbf821a52db7da9530d790f07 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Fri, 19 Jan 2018 17:25:41 +0800 Subject: phy: allwinner: sun4i-usb: poll vbus changes on A23/A33 when driving VBUS The AXP223 PMIC, like the AXP221, does not generate VBUS change interrupts when N_VBUSEN is used to drive VBUS for the OTG port on the board. This was not noticed until recently, as most A23/A33 boards use a GPIO pin that does not support interrupts for OTG ID detection. This forces the driver to use polling. However the A33-OlinuXino uses a pin that does support interrupts, so the driver uses them. However the VBUS interrupt never fires, and the driver never gets to update the VBUS status. This results in musb timing out waiting for VBUS to rise. This was worked around for the AXP221 by resorting to polling changes in commit 91d96f06a760 ("phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31"). This patch adds the A23 and A33 to the list of SoCs that need the workaround. Fixes: fc1f45ed3043 ("phy-sun4i-usb: Add support for the usb-phys on the sun8i-a33 SoC") Fixes: 123dfdbcfaf5 ("phy-sun4i-usb: Add support for the usb-phys on the sun8i-a23 SoC") Cc: # 4.3.x: 68dbc2ce77bb phy-sun4i-usb: Use of_match_node to get model specific config data Cc: # 4.3.x: 5cf700ac9d50 phy: phy-sun4i-usb: Fix optional gpios failing probe Cc: # 4.3.x: 04e59a0211ff phy-sun4i-usb: Fix irq free conditions to match request conditions Cc: # 4.3.x: 91d96f06a760 phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31 Cc: # 4.3.x Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/allwinner/phy-sun4i-usb.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index bee798892b21..d4dcd39b8d76 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -411,11 +411,13 @@ static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data) return true; /* - * The A31 companion pmic (axp221) does not generate vbus change - * interrupts when the board is driving vbus, so we must poll + * The A31/A23/A33 companion pmics (AXP221/AXP223) do not + * generate vbus change interrupts when the board is driving + * vbus using the N_VBUSEN pin on the pmic, so we must poll * when using the pmic for vbus-det _and_ we're driving vbus. */ - if (data->cfg->type == sun6i_a31_phy && + if ((data->cfg->type == sun6i_a31_phy || + data->cfg->type == sun8i_a33_phy) && data->vbus_power_supply && data->phys[0].regulator_on) return true; @@ -886,7 +888,7 @@ static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = { static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = { .num_phys = 2, - .type = sun4i_a10_phy, + .type = sun6i_a31_phy, .disc_thresh = 3, .phyctl_offset = REG_PHYCTL_A10, .dedicated_clocks = true, -- cgit v1.2.1 From 7d287a5d5f809ee34fd510bec8beeb1bb1eb07cb Mon Sep 17 00:00:00 2001 From: ShuFan Lee Date: Mon, 12 Mar 2018 19:55:24 +0800 Subject: staging: typec: modify parameter of tcpci_irq The parameter, dev_id, of tcpci_irq should be tcpci_chip. Remove definition of TCPC_CC_STATUS_DRPRST in tcpci.h. Fixes: 8f9439022648("staging: typec: handle vendor defined part and modify drp toggling flow") Signed-off-by: ShuFan Lee Reviewed-by: Li Jun Tested-by: Li Jun Signed-off-by: Greg Kroah-Hartman --- drivers/staging/typec/tcpci.c | 4 ++-- drivers/staging/typec/tcpci.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c index 804374056a1e..076d97eaff6f 100644 --- a/drivers/staging/typec/tcpci.c +++ b/drivers/staging/typec/tcpci.c @@ -451,9 +451,9 @@ EXPORT_SYMBOL_GPL(tcpci_irq); static irqreturn_t _tcpci_irq(int irq, void *dev_id) { - struct tcpci *tcpci = dev_id; + struct tcpci_chip *chip = dev_id; - return tcpci_irq(tcpci); + return tcpci_irq(chip->tcpci); } static const struct regmap_config tcpci_regmap_config = { diff --git a/drivers/staging/typec/tcpci.h b/drivers/staging/typec/tcpci.h index a2c1754ca222..34c865f0dcf6 100644 --- a/drivers/staging/typec/tcpci.h +++ b/drivers/staging/typec/tcpci.h @@ -59,7 +59,6 @@ #define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) #define TCPC_CC_STATUS 0x1d -#define TCPC_CC_STATUS_DRPRST BIT(5) #define TCPC_CC_STATUS_TERM BIT(4) #define TCPC_CC_STATUS_CC2_SHIFT 2 #define TCPC_CC_STATUS_CC2_MASK 0x3 -- cgit v1.2.1 From 95713fb8aa039e9cd89ff545b62bd2a860c36e39 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 12 Mar 2018 16:30:40 +0100 Subject: Revert "usb: core: Add "quirks" parameter for usbcore" This reverts commit b27560e4d9e5240b5544c9c5650c7442e482646e as it breaks the build for some arches :( Reported-by: kbuild test robot Cc: Kai-Heng Feng Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1d1d53f85ddd..70a7398c20e2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4368,6 +4368,61 @@ usbcore.nousb [USB] Disable the USB subsystem + usbcore.quirks= + [USB] A list of quirks entries to supplement or + override the built-in usb core quirk list. List + entries are separated by commas. Each entry has + the form VID:PID:Flags where VID and PID are Vendor + and Product ID values (4-digit hex numbers) and + Flags is a set of characters, each corresponding + to a common usb core quirk flag as follows: + a = USB_QUIRK_STRING_FETCH_255 (string + descriptors must not be fetched using + a 255-byte read); + b = USB_QUIRK_RESET_RESUME (device can't resume + correctly so reset it instead); + c = USB_QUIRK_NO_SET_INTF (device can't handle + Set-Interface requests); + d = USB_QUIRK_CONFIG_INTF_STRINGS (device can't + handle its Configuration or Interface + strings); + e = USB_QUIRK_RESET (device can't be reset + (e.g morph devices), don't use reset); + f = USB_QUIRK_HONOR_BNUMINTERFACES (device has + more interface descriptions than the + bNumInterfaces count, and can't handle + talking to these interfaces); + g = USB_QUIRK_DELAY_INIT (device needs a pause + during initialization, after we read + the device descriptor); + h = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL (For + high speed and super speed interrupt + endpoints, the USB 2.0 and USB 3.0 spec + require the interval in microframes (1 + microframe = 125 microseconds) to be + calculated as interval = 2 ^ + (bInterval-1). + Devices with this quirk report their + bInterval as the result of this + calculation instead of the exponent + variable used in the calculation); + i = USB_QUIRK_DEVICE_QUALIFIER (device can't + handle device_qualifier descriptor + requests); + j = USB_QUIRK_IGNORE_REMOTE_WAKEUP (device + generates spurious wakeup, ignore + remote wakeup capability); + k = USB_QUIRK_NO_LPM (device can't handle Link + Power Management); + l = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL + (Device reports its bInterval as linear + frames instead of the USB 2.0 + calculation); + m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs + to be disconnected before suspend to + prevent spurious wakeup) + Example: quirks=0781:5580:bk,0a5c:5834:gij + usbhid.mousepoll= [USBHID] The interval which mice are to be polled at. diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index f4a548471f0f..42faaeead81b 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -11,6 +11,143 @@ #include #include "usb.h" +struct quirk_entry { + u16 vid; + u16 pid; + u32 flags; +}; + +static DEFINE_MUTEX(quirk_mutex); + +static struct quirk_entry *quirk_list; +static unsigned int quirk_count; + +static char quirks_param[128]; + +static int quirks_param_set(const char *val, const struct kernel_param *kp) +{ + char *p, *field; + u16 vid, pid; + u32 flags; + size_t i; + + mutex_lock(&quirk_mutex); + + if (!val || !*val) { + quirk_count = 0; + kfree(quirk_list); + quirk_list = NULL; + goto unlock; + } + + for (quirk_count = 1, i = 0; val[i]; i++) + if (val[i] == ',') + quirk_count++; + + if (quirk_list) { + kfree(quirk_list); + quirk_list = NULL; + } + + quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry), + GFP_KERNEL); + if (!quirk_list) { + mutex_unlock(&quirk_mutex); + return -ENOMEM; + } + + for (i = 0, p = (char *)val; p && *p;) { + /* Each entry consists of VID:PID:flags */ + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &vid)) + break; + + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &pid)) + break; + + field = strsep(&p, ","); + if (!field || !*field) + break; + + /* Collect the flags */ + for (flags = 0; *field; field++) { + switch (*field) { + case 'a': + flags |= USB_QUIRK_STRING_FETCH_255; + break; + case 'b': + flags |= USB_QUIRK_RESET_RESUME; + break; + case 'c': + flags |= USB_QUIRK_NO_SET_INTF; + break; + case 'd': + flags |= USB_QUIRK_CONFIG_INTF_STRINGS; + break; + case 'e': + flags |= USB_QUIRK_RESET; + break; + case 'f': + flags |= USB_QUIRK_HONOR_BNUMINTERFACES; + break; + case 'g': + flags |= USB_QUIRK_DELAY_INIT; + break; + case 'h': + flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL; + break; + case 'i': + flags |= USB_QUIRK_DEVICE_QUALIFIER; + break; + case 'j': + flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP; + break; + case 'k': + flags |= USB_QUIRK_NO_LPM; + break; + case 'l': + flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL; + break; + case 'm': + flags |= USB_QUIRK_DISCONNECT_SUSPEND; + break; + /* Ignore unrecognized flag characters */ + } + } + + quirk_list[i++] = (struct quirk_entry) + { .vid = vid, .pid = pid, .flags = flags }; + } + + if (i < quirk_count) + quirk_count = i; + +unlock: + mutex_unlock(&quirk_mutex); + + return param_set_copystring(val, kp); +} + +static const struct kernel_param_ops quirks_param_ops = { + .set = quirks_param_set, + .get = param_get_string, +}; + +static struct kparam_string quirks_param_string = { + .maxlen = sizeof(quirks_param), + .string = quirks_param, +}; + +module_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644); +MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks"); + /* Lists of quirky USB devices, split in device quirks and interface quirks. * Device quirks are applied at the very beginning of the enumeration process, * right after reading the device descriptor. They can thus only match on device @@ -320,8 +457,8 @@ static int usb_amd_resume_quirk(struct usb_device *udev) return 0; } -static u32 __usb_detect_quirks(struct usb_device *udev, - const struct usb_device_id *id) +static u32 usb_detect_static_quirks(struct usb_device *udev, + const struct usb_device_id *id) { u32 quirks = 0; @@ -339,21 +476,43 @@ static u32 __usb_detect_quirks(struct usb_device *udev, return quirks; } +static u32 usb_detect_dynamic_quirks(struct usb_device *udev) +{ + u16 vid = le16_to_cpu(udev->descriptor.idVendor); + u16 pid = le16_to_cpu(udev->descriptor.idProduct); + int i, flags = 0; + + mutex_lock(&quirk_mutex); + + for (i = 0; i < quirk_count; i++) { + if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { + flags = quirk_list[i].flags; + break; + } + } + + mutex_unlock(&quirk_mutex); + + return flags; +} + /* * Detect any quirks the device has, and do any housekeeping for it if needed. */ void usb_detect_quirks(struct usb_device *udev) { - udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); + udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); /* * Pixart-based mice would trigger remote wakeup issue on AMD * Yangtze chipset, so set them as RESET_RESUME flag. */ if (usb_amd_resume_quirk(udev)) - udev->quirks |= __usb_detect_quirks(udev, + udev->quirks |= usb_detect_static_quirks(udev, usb_amd_resume_quirk_list); + udev->quirks ^= usb_detect_dynamic_quirks(udev); + if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", udev->quirks); @@ -372,7 +531,7 @@ void usb_detect_interface_quirks(struct usb_device *udev) { u32 quirks; - quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); + quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); if (quirks == 0) return; @@ -380,3 +539,11 @@ void usb_detect_interface_quirks(struct usb_device *udev) quirks); udev->quirks |= quirks; } + +void usb_release_quirk_list(void) +{ + mutex_lock(&quirk_mutex); + kfree(quirk_list); + quirk_list = NULL; + mutex_unlock(&quirk_mutex); +} diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 2f5fbc56a9dd..0adb6345ff2e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -1259,6 +1259,7 @@ static void __exit usb_exit(void) if (usb_disabled()) return; + usb_release_quirk_list(); usb_deregister_device_driver(&usb_generic_driver); usb_major_cleanup(); usb_deregister(&usbfs_driver); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 149cc7480971..546a2219454b 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -36,6 +36,7 @@ extern void usb_deauthorize_interface(struct usb_interface *); extern void usb_authorize_interface(struct usb_interface *); extern void usb_detect_quirks(struct usb_device *udev); extern void usb_detect_interface_quirks(struct usb_device *udev); +extern void usb_release_quirk_list(void); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, --- Documentation/admin-guide/kernel-parameters.txt | 55 -------- drivers/usb/core/quirks.c | 177 +----------------------- drivers/usb/core/usb.c | 1 - drivers/usb/core/usb.h | 1 - 4 files changed, 5 insertions(+), 229 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 70a7398c20e2..1d1d53f85ddd 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4368,61 +4368,6 @@ usbcore.nousb [USB] Disable the USB subsystem - usbcore.quirks= - [USB] A list of quirks entries to supplement or - override the built-in usb core quirk list. List - entries are separated by commas. Each entry has - the form VID:PID:Flags where VID and PID are Vendor - and Product ID values (4-digit hex numbers) and - Flags is a set of characters, each corresponding - to a common usb core quirk flag as follows: - a = USB_QUIRK_STRING_FETCH_255 (string - descriptors must not be fetched using - a 255-byte read); - b = USB_QUIRK_RESET_RESUME (device can't resume - correctly so reset it instead); - c = USB_QUIRK_NO_SET_INTF (device can't handle - Set-Interface requests); - d = USB_QUIRK_CONFIG_INTF_STRINGS (device can't - handle its Configuration or Interface - strings); - e = USB_QUIRK_RESET (device can't be reset - (e.g morph devices), don't use reset); - f = USB_QUIRK_HONOR_BNUMINTERFACES (device has - more interface descriptions than the - bNumInterfaces count, and can't handle - talking to these interfaces); - g = USB_QUIRK_DELAY_INIT (device needs a pause - during initialization, after we read - the device descriptor); - h = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL (For - high speed and super speed interrupt - endpoints, the USB 2.0 and USB 3.0 spec - require the interval in microframes (1 - microframe = 125 microseconds) to be - calculated as interval = 2 ^ - (bInterval-1). - Devices with this quirk report their - bInterval as the result of this - calculation instead of the exponent - variable used in the calculation); - i = USB_QUIRK_DEVICE_QUALIFIER (device can't - handle device_qualifier descriptor - requests); - j = USB_QUIRK_IGNORE_REMOTE_WAKEUP (device - generates spurious wakeup, ignore - remote wakeup capability); - k = USB_QUIRK_NO_LPM (device can't handle Link - Power Management); - l = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL - (Device reports its bInterval as linear - frames instead of the USB 2.0 - calculation); - m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs - to be disconnected before suspend to - prevent spurious wakeup) - Example: quirks=0781:5580:bk,0a5c:5834:gij - usbhid.mousepoll= [USBHID] The interval which mice are to be polled at. diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 42faaeead81b..f4a548471f0f 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -11,143 +11,6 @@ #include #include "usb.h" -struct quirk_entry { - u16 vid; - u16 pid; - u32 flags; -}; - -static DEFINE_MUTEX(quirk_mutex); - -static struct quirk_entry *quirk_list; -static unsigned int quirk_count; - -static char quirks_param[128]; - -static int quirks_param_set(const char *val, const struct kernel_param *kp) -{ - char *p, *field; - u16 vid, pid; - u32 flags; - size_t i; - - mutex_lock(&quirk_mutex); - - if (!val || !*val) { - quirk_count = 0; - kfree(quirk_list); - quirk_list = NULL; - goto unlock; - } - - for (quirk_count = 1, i = 0; val[i]; i++) - if (val[i] == ',') - quirk_count++; - - if (quirk_list) { - kfree(quirk_list); - quirk_list = NULL; - } - - quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry), - GFP_KERNEL); - if (!quirk_list) { - mutex_unlock(&quirk_mutex); - return -ENOMEM; - } - - for (i = 0, p = (char *)val; p && *p;) { - /* Each entry consists of VID:PID:flags */ - field = strsep(&p, ":"); - if (!field) - break; - - if (kstrtou16(field, 16, &vid)) - break; - - field = strsep(&p, ":"); - if (!field) - break; - - if (kstrtou16(field, 16, &pid)) - break; - - field = strsep(&p, ","); - if (!field || !*field) - break; - - /* Collect the flags */ - for (flags = 0; *field; field++) { - switch (*field) { - case 'a': - flags |= USB_QUIRK_STRING_FETCH_255; - break; - case 'b': - flags |= USB_QUIRK_RESET_RESUME; - break; - case 'c': - flags |= USB_QUIRK_NO_SET_INTF; - break; - case 'd': - flags |= USB_QUIRK_CONFIG_INTF_STRINGS; - break; - case 'e': - flags |= USB_QUIRK_RESET; - break; - case 'f': - flags |= USB_QUIRK_HONOR_BNUMINTERFACES; - break; - case 'g': - flags |= USB_QUIRK_DELAY_INIT; - break; - case 'h': - flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL; - break; - case 'i': - flags |= USB_QUIRK_DEVICE_QUALIFIER; - break; - case 'j': - flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP; - break; - case 'k': - flags |= USB_QUIRK_NO_LPM; - break; - case 'l': - flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL; - break; - case 'm': - flags |= USB_QUIRK_DISCONNECT_SUSPEND; - break; - /* Ignore unrecognized flag characters */ - } - } - - quirk_list[i++] = (struct quirk_entry) - { .vid = vid, .pid = pid, .flags = flags }; - } - - if (i < quirk_count) - quirk_count = i; - -unlock: - mutex_unlock(&quirk_mutex); - - return param_set_copystring(val, kp); -} - -static const struct kernel_param_ops quirks_param_ops = { - .set = quirks_param_set, - .get = param_get_string, -}; - -static struct kparam_string quirks_param_string = { - .maxlen = sizeof(quirks_param), - .string = quirks_param, -}; - -module_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644); -MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks"); - /* Lists of quirky USB devices, split in device quirks and interface quirks. * Device quirks are applied at the very beginning of the enumeration process, * right after reading the device descriptor. They can thus only match on device @@ -457,8 +320,8 @@ static int usb_amd_resume_quirk(struct usb_device *udev) return 0; } -static u32 usb_detect_static_quirks(struct usb_device *udev, - const struct usb_device_id *id) +static u32 __usb_detect_quirks(struct usb_device *udev, + const struct usb_device_id *id) { u32 quirks = 0; @@ -476,43 +339,21 @@ static u32 usb_detect_static_quirks(struct usb_device *udev, return quirks; } -static u32 usb_detect_dynamic_quirks(struct usb_device *udev) -{ - u16 vid = le16_to_cpu(udev->descriptor.idVendor); - u16 pid = le16_to_cpu(udev->descriptor.idProduct); - int i, flags = 0; - - mutex_lock(&quirk_mutex); - - for (i = 0; i < quirk_count; i++) { - if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { - flags = quirk_list[i].flags; - break; - } - } - - mutex_unlock(&quirk_mutex); - - return flags; -} - /* * Detect any quirks the device has, and do any housekeeping for it if needed. */ void usb_detect_quirks(struct usb_device *udev) { - udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); + udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); /* * Pixart-based mice would trigger remote wakeup issue on AMD * Yangtze chipset, so set them as RESET_RESUME flag. */ if (usb_amd_resume_quirk(udev)) - udev->quirks |= usb_detect_static_quirks(udev, + udev->quirks |= __usb_detect_quirks(udev, usb_amd_resume_quirk_list); - udev->quirks ^= usb_detect_dynamic_quirks(udev); - if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", udev->quirks); @@ -531,7 +372,7 @@ void usb_detect_interface_quirks(struct usb_device *udev) { u32 quirks; - quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); + quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); if (quirks == 0) return; @@ -539,11 +380,3 @@ void usb_detect_interface_quirks(struct usb_device *udev) quirks); udev->quirks |= quirks; } - -void usb_release_quirk_list(void) -{ - mutex_lock(&quirk_mutex); - kfree(quirk_list); - quirk_list = NULL; - mutex_unlock(&quirk_mutex); -} diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 0adb6345ff2e..2f5fbc56a9dd 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -1259,7 +1259,6 @@ static void __exit usb_exit(void) if (usb_disabled()) return; - usb_release_quirk_list(); usb_deregister_device_driver(&usb_generic_driver); usb_major_cleanup(); usb_deregister(&usbfs_driver); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 546a2219454b..149cc7480971 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -36,7 +36,6 @@ extern void usb_deauthorize_interface(struct usb_interface *); extern void usb_authorize_interface(struct usb_interface *); extern void usb_detect_quirks(struct usb_device *udev); extern void usb_detect_interface_quirks(struct usb_device *udev); -extern void usb_release_quirk_list(void); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, -- cgit v1.2.1 From 28af04b4a7879a027cb23c1d616a60e31ff4af7c Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 10 Jan 2018 13:17:13 -0800 Subject: usb: gadget: mass_storage: Set max_speed to SSP Increase max_speed of the mass_storage driver for UDCs that support SuperSpeed Plus. The composite driver will pass this value to UDC core to set the device speed on probe (actual speed may be different depending on whether the USB controller supports it or other external factors). Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/mass_storage.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/legacy/mass_storage.c b/drivers/usb/gadget/legacy/mass_storage.c index ef3d25259b0e..fd5595ac5bf7 100644 --- a/drivers/usb/gadget/legacy/mass_storage.c +++ b/drivers/usb/gadget/legacy/mass_storage.c @@ -225,7 +225,7 @@ static int msg_unbind(struct usb_composite_dev *cdev) static struct usb_composite_driver msg_driver = { .name = "g_mass_storage", .dev = &msg_device_desc, - .max_speed = USB_SPEED_SUPER, + .max_speed = USB_SPEED_SUPER_PLUS, .needs_serial = 1, .strings = dev_strings, .bind = msg_bind, -- cgit v1.2.1 From 4058ebf33cb0be88ca516f968eda24ab7b6b93e4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 12 Jan 2018 11:05:02 +0100 Subject: usb: gadget: ffs: Execute copy_to_user() with USER_DS set When using a AIO read() operation on the function FS gadget driver a URB is submitted asynchronously and on URB completion the received data is copied to the userspace buffer associated with the read operation. This is done from a kernel worker thread invoking copy_to_user() (through copy_to_iter()). And while the user space process memory is made available to the kernel thread using use_mm(), some architecture require in addition to this that the operation runs with USER_DS set. Otherwise the userspace memory access will fail. For example on ARM64 with Privileged Access Never (PAN) and User Access Override (UAO) enabled the following crash occurs. Internal error: Accessing user space memory with fs=KERNEL_DS: 9600004f [#1] SMP Modules linked in: CPU: 2 PID: 1636 Comm: kworker/2:1 Not tainted 4.9.0-04081-g8ab2dfb-dirty #487 Hardware name: ZynqMP ZCU102 Rev1.0 (DT) Workqueue: events ffs_user_copy_worker task: ffffffc87afc8080 task.stack: ffffffc87a00c000 PC is at __arch_copy_to_user+0x190/0x220 LR is at copy_to_iter+0x78/0x3c8 [...] [] __arch_copy_to_user+0x190/0x220 [] ffs_user_copy_worker+0x70/0x130 [] process_one_work+0x1dc/0x460 [] worker_thread+0x50/0x4b0 [] kthread+0xd8/0xf0 [] ret_from_fork+0x10/0x50 Address this by placing a set_fs(USER_DS) before of the copy operation and revert it again once the copy operation has finished. This patch is analogous to commit d7ffde35e31a ("vhost: use USER_DS in vhost_worker thread") which addresses the same underlying issue. Signed-off-by: Lars-Peter Clausen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index c2592d883f67..e33e8ca5a120 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -758,9 +758,13 @@ static void ffs_user_copy_worker(struct work_struct *work) bool kiocb_has_eventfd = io_data->kiocb->ki_flags & IOCB_EVENTFD; if (io_data->read && ret > 0) { + mm_segment_t oldfs = get_fs(); + + set_fs(USER_DS); use_mm(io_data->mm); ret = ffs_copy_to_iter(io_data->buf, ret, &io_data->data); unuse_mm(io_data->mm); + set_fs(oldfs); } io_data->kiocb->ki_complete(io_data->kiocb, ret, ret); -- cgit v1.2.1 From 946ef68ad4e45aa048a5fb41ce8823ed29da866a Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 12 Jan 2018 11:26:16 +0100 Subject: usb: gadget: ffs: Let setup() return USB_GADGET_DELAYED_STATUS Some UDC drivers (like the DWC3) expect that the response to a setup() request is queued from within the setup function itself so that it is available as soon as setup() has completed. Upon receiving a setup request the function fs driver creates an event that is made available to userspace. And only once userspace has acknowledged that event the response to the setup request is queued. So it violates the requirement of those UDC drivers and random failures can be observed. This is basically a race condition and if userspace is able to read the event and queue the response fast enough all is good. But if it is not, for example because other processes are currently scheduled to run, the USB host that sent the setup request will observe an error. To avoid this the gadget framework provides the USB_GADGET_DELAYED_STATUS return code. If a setup() callback returns this value the UDC driver is aware that response is not yet available and can uses the appropriate methods to handle this case. Since in the case of function fs the response will never be available when the setup() function returns make sure that this status code is used. This fixed random occasional failures that were previously observed on a DWC3 based system under high system load. Signed-off-by: Lars-Peter Clausen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index e33e8ca5a120..fb2a027f0208 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -3243,7 +3243,7 @@ static int ffs_func_setup(struct usb_function *f, __ffs_event_add(ffs, FUNCTIONFS_SETUP); spin_unlock_irqrestore(&ffs->ev.waitq.lock, flags); - return 0; + return USB_GADGET_DELAYED_STATUS; } static bool ffs_func_req_match(struct usb_function *f, -- cgit v1.2.1 From d14ccaba8dc7aa1f137ef93349b08196ce0f0347 Mon Sep 17 00:00:00 2001 From: Gevorg Sahakyan Date: Tue, 16 Jan 2018 16:21:46 +0400 Subject: usb: dwc2: Remove version check in GSNPSID MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Only check the ID portion of the GSNPSID register and don’t check the version. This will allow the driver to work with version 4.00a and later of the DWC_hsotg IP. Acked-by: John Youn Signed-off-by: Gevorg Sahakyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 5 +++++ drivers/usb/dwc2/hw.h | 1 + drivers/usb/dwc2/params.c | 11 +++++------ 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 8f77034f2ecf..679a2e092169 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -956,6 +956,11 @@ struct dwc2_hsotg { #define DWC2_FS_IOT_REV_1_00a 0x5531100a #define DWC2_HS_IOT_REV_1_00a 0x5532100a + /* DWC OTG HW Core ID */ +#define DWC2_OTG_ID 0x4f540000 +#define DWC2_FS_IOT_ID 0x55310000 +#define DWC2_HS_IOT_ID 0x55320000 + #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) union dwc2_hcd_internal_flags { u32 d32; diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 2c906d8ee465..43a3fb00f14f 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -231,6 +231,7 @@ #define GUID HSOTG_REG(0x003c) #define GSNPSID HSOTG_REG(0x0040) #define GHWCFG1 HSOTG_REG(0x0044) +#define GSNPSID_ID_MASK GENMASK(31, 16) #define GHWCFG2 HSOTG_REG(0x0048) #define GHWCFG2_OTG_ENABLE_IC_USB BIT(31) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 03fd20f0b496..82f5846d7671 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -646,14 +646,13 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) /* * Attempt to ensure this device is really a DWC_otg Controller. * Read and verify the GSNPSID register contents. The value should be - * 0x45f42xxx or 0x45f43xxx, which corresponds to either "OT2" or "OT3", - * as in "OTG version 2.xx" or "OTG version 3.xx". + * 0x45f4xxxx, 0x5531xxxx or 0x5532xxxx */ + hw->snpsid = dwc2_readl(hsotg->regs + GSNPSID); - if ((hw->snpsid & 0xfffff000) != 0x4f542000 && - (hw->snpsid & 0xfffff000) != 0x4f543000 && - (hw->snpsid & 0xffff0000) != 0x55310000 && - (hw->snpsid & 0xffff0000) != 0x55320000) { + if ((hw->snpsid & GSNPSID_ID_MASK) != DWC2_OTG_ID && + (hw->snpsid & GSNPSID_ID_MASK) != DWC2_FS_IOT_ID && + (hw->snpsid & GSNPSID_ID_MASK) != DWC2_HS_IOT_ID) { dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n", hw->snpsid); return -ENODEV; -- cgit v1.2.1 From 79d6b8c51cb85e27f189e0ffd0b68a0162477e47 Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Fri, 19 Jan 2018 14:39:31 +0400 Subject: usb: dwc2: Update bit polling functionality Move dwc2_hsotg_wait_bit_set function to core.c so it can be used anywhere in the code. Added dwc2_hsotg_wait_bit_clear function in core.c. Replace all the parts of register bit polling code with dwc2_hsotg_wait_bit_set or dwc2_hsotg_wait_bit_clear functions calls depends on code logic. Acked-by: John Youn Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 108 +++++++++++++++++++++++++++------------------- drivers/usb/dwc2/core.h | 5 +++ drivers/usb/dwc2/gadget.c | 38 ++-------------- drivers/usb/dwc2/hcd.c | 18 +++----- 4 files changed, 79 insertions(+), 90 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 82a7d98c3436..6294cee64e60 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -317,7 +317,6 @@ static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg) int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait) { u32 greset; - int count = 0; bool wait_for_host_mode = false; dev_vdbg(hsotg->dev, "%s()\n", __func__); @@ -346,29 +345,19 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait) greset = dwc2_readl(hsotg->regs + GRSTCTL); greset |= GRSTCTL_CSFTRST; dwc2_writel(greset, hsotg->regs + GRSTCTL); - do { - udelay(1); - greset = dwc2_readl(hsotg->regs + GRSTCTL); - if (++count > 50) { - dev_warn(hsotg->dev, - "%s() HANG! Soft Reset GRSTCTL=%0x\n", - __func__, greset); - return -EBUSY; - } - } while (greset & GRSTCTL_CSFTRST); + + if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_CSFTRST, 50)) { + dev_warn(hsotg->dev, "%s: HANG! Soft Reset timeout GRSTCTL GRSTCTL_CSFTRST\n", + __func__); + return -EBUSY; + } /* Wait for AHB master IDLE state */ - count = 0; - do { - udelay(1); - greset = dwc2_readl(hsotg->regs + GRSTCTL); - if (++count > 50) { - dev_warn(hsotg->dev, - "%s() HANG! AHB Idle GRSTCTL=%0x\n", - __func__, greset); - return -EBUSY; - } - } while (!(greset & GRSTCTL_AHBIDLE)); + if (dwc2_hsotg_wait_bit_set(hsotg, GRSTCTL, GRSTCTL_AHBIDLE, 50)) { + dev_warn(hsotg->dev, "%s: HANG! AHB Idle timeout GRSTCTL GRSTCTL_AHBIDLE\n", + __func__); + return -EBUSY; + } if (wait_for_host_mode && !skip_wait) dwc2_wait_for_mode(hsotg, true); @@ -683,7 +672,6 @@ void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg) void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num) { u32 greset; - int count = 0; dev_vdbg(hsotg->dev, "Flush Tx FIFO %d\n", num); @@ -691,17 +679,9 @@ void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num) greset |= num << GRSTCTL_TXFNUM_SHIFT & GRSTCTL_TXFNUM_MASK; dwc2_writel(greset, hsotg->regs + GRSTCTL); - do { - greset = dwc2_readl(hsotg->regs + GRSTCTL); - if (++count > 10000) { - dev_warn(hsotg->dev, - "%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n", - __func__, greset, - dwc2_readl(hsotg->regs + GNPTXSTS)); - break; - } - udelay(1); - } while (greset & GRSTCTL_TXFFLSH); + if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_TXFFLSH, 10000)) + dev_warn(hsotg->dev, "%s: HANG! timeout GRSTCTL GRSTCTL_TXFFLSH\n", + __func__); /* Wait for at least 3 PHY Clocks */ udelay(1); @@ -715,22 +695,16 @@ void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num) void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg) { u32 greset; - int count = 0; dev_vdbg(hsotg->dev, "%s()\n", __func__); greset = GRSTCTL_RXFFLSH; dwc2_writel(greset, hsotg->regs + GRSTCTL); - do { - greset = dwc2_readl(hsotg->regs + GRSTCTL); - if (++count > 10000) { - dev_warn(hsotg->dev, "%s() HANG! GRSTCTL=%0x\n", - __func__, greset); - break; - } - udelay(1); - } while (greset & GRSTCTL_RXFFLSH); + /* Wait for RxFIFO flush done */ + if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_RXFFLSH, 10000)) + dev_warn(hsotg->dev, "%s: HANG! timeout GRSTCTL GRSTCTL_RXFFLSH\n", + __func__); /* Wait for at least 3 PHY Clocks */ udelay(1); @@ -825,6 +799,52 @@ bool dwc2_hw_is_device(struct dwc2_hsotg *hsotg) (op_mode == GHWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE); } +/** + * dwc2_hsotg_wait_bit_set - Waits for bit to be set. + * @hsotg: Programming view of DWC_otg controller. + * @offset: Register's offset where bit/bits must be set. + * @mask: Mask of the bit/bits which must be set. + * @timeout: Timeout to wait. + * + * Return: 0 if bit/bits are set or -ETIMEDOUT in case of timeout. + */ +int dwc2_hsotg_wait_bit_set(struct dwc2_hsotg *hsotg, u32 offset, u32 mask, + u32 timeout) +{ + u32 i; + + for (i = 0; i < timeout; i++) { + if (dwc2_readl(hsotg->regs + offset) & mask) + return 0; + udelay(1); + } + + return -ETIMEDOUT; +} + +/** + * dwc2_hsotg_wait_bit_clear - Waits for bit to be clear. + * @hsotg: Programming view of DWC_otg controller. + * @offset: Register's offset where bit/bits must be set. + * @mask: Mask of the bit/bits which must be set. + * @timeout: Timeout to wait. + * + * Return: 0 if bit/bits are set or -ETIMEDOUT in case of timeout. + */ +int dwc2_hsotg_wait_bit_clear(struct dwc2_hsotg *hsotg, u32 offset, u32 mask, + u32 timeout) +{ + u32 i; + + for (i = 0; i < timeout; i++) { + if (!(dwc2_readl(hsotg->regs + offset) & mask)) + return 0; + udelay(1); + } + + return -ETIMEDOUT; +} + MODULE_DESCRIPTION("DESIGNWARE HS OTG Core"); MODULE_AUTHOR("Synopsys, Inc."); MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 679a2e092169..1b6e4ccda617 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1142,6 +1142,11 @@ extern const struct of_device_id dwc2_of_match_table[]; int dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg); int dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg); +/* Common polling functions */ +int dwc2_hsotg_wait_bit_set(struct dwc2_hsotg *hs_otg, u32 reg, u32 bit, + u32 timeout); +int dwc2_hsotg_wait_bit_clear(struct dwc2_hsotg *hs_otg, u32 reg, u32 bit, + u32 timeout); /* Parameters */ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg); int dwc2_init_params(struct dwc2_hsotg *hsotg); diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index c661597714c9..f163f7426ed0 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -252,6 +252,7 @@ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg) unsigned int ep; unsigned int addr; int timeout; + u32 val; u32 *txfsz = hsotg->params.g_tx_fifo_size; @@ -2495,30 +2496,13 @@ bad_mps: */ static void dwc2_hsotg_txfifo_flush(struct dwc2_hsotg *hsotg, unsigned int idx) { - int timeout; - int val; - dwc2_writel(GRSTCTL_TXFNUM(idx) | GRSTCTL_TXFFLSH, hsotg->regs + GRSTCTL); /* wait until the fifo is flushed */ - timeout = 100; - - while (1) { - val = dwc2_readl(hsotg->regs + GRSTCTL); - - if ((val & (GRSTCTL_TXFFLSH)) == 0) - break; - - if (--timeout == 0) { - dev_err(hsotg->dev, - "%s: timeout flushing fifo (GRSTCTL=%08x)\n", - __func__, val); - break; - } - - udelay(1); - } + if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_TXFFLSH, 100)) + dev_warn(hsotg->dev, "%s: timeout flushing fifo GRSTCTL_TXFFLSH\n", + __func__); } /** @@ -3676,20 +3660,6 @@ irq_retry: return IRQ_HANDLED; } -static int dwc2_hsotg_wait_bit_set(struct dwc2_hsotg *hs_otg, u32 reg, - u32 bit, u32 timeout) -{ - u32 i; - - for (i = 0; i < timeout; i++) { - if (dwc2_readl(hs_otg->regs + reg) & bit) - return 0; - udelay(1); - } - - return -ETIMEDOUT; -} - static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, struct dwc2_hsotg_ep *hs_ep) { diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index a5d72fcd1603..516929220aa5 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2403,24 +2403,18 @@ static void dwc2_core_host_init(struct dwc2_hsotg *hsotg) /* Halt all channels to put them into a known state */ for (i = 0; i < num_channels; i++) { - int count = 0; - hcchar = dwc2_readl(hsotg->regs + HCCHAR(i)); hcchar |= HCCHAR_CHENA | HCCHAR_CHDIS; hcchar &= ~HCCHAR_EPDIR; dwc2_writel(hcchar, hsotg->regs + HCCHAR(i)); dev_dbg(hsotg->dev, "%s: Halt channel %d\n", __func__, i); - do { - hcchar = dwc2_readl(hsotg->regs + HCCHAR(i)); - if (++count > 1000) { - dev_err(hsotg->dev, - "Unable to clear enable on channel %d\n", - i); - break; - } - udelay(1); - } while (hcchar & HCCHAR_CHENA); + + if (dwc2_hsotg_wait_bit_clear(hsotg, HCCHAR(i), + HCCHAR_CHENA, 1000)) { + dev_warn(hsotg->dev, "Unable to clear enable on channel %d\n", + i); + } } } -- cgit v1.2.1 From d1ac8c802dce92971d1cc81f82a3466b2104e787 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:39:57 +0400 Subject: usb: dwc2: Use AHB burst size parameter In dwc2_hsotg_core_init_disconnected() function used AHB burst size parameter, instead of calculating already calculated value. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index f163f7426ed0..3cc1e3747b7d 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3278,7 +3278,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, if (using_dma(hsotg)) { dwc2_writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | - (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT), + hsotg->params.ahbcfg, hsotg->regs + GAHBCFG); /* Set DDMA mode support in the core if needed */ -- cgit v1.2.1 From 1b52d2fac4075e8e32a95ad81b521fdab1e1678c Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:40:23 +0400 Subject: usb: dwc2: Set AHB burst size to INCR Changed AHB burst size from INCR4 to INCR by default. With this value driver shows excellent DMA performance. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 2 +- drivers/usb/dwc2/params.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 1b6e4ccda617..cc9bf68b5e7c 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -408,7 +408,7 @@ enum dwc2_ep0_state { * @ahbcfg: This field allows the default value of the GAHBCFG * register to be overridden * -1 - GAHBCFG value will be set to 0x06 - * (INCR4, default) + * (INCR, default) * all others - GAHBCFG value will be overridden with * this value * Not all bits can be controlled like this, the diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 82f5846d7671..430325510812 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -280,7 +280,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->hibernation = false; p->max_packet_count = hw->max_packet_count; p->max_transfer_size = hw->max_transfer_size; - p->ahbcfg = GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT; + p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT; if ((hsotg->dr_mode == USB_DR_MODE_HOST) || (hsotg->dr_mode == USB_DR_MODE_OTG)) { -- cgit v1.2.1 From 1b4977c793d3d9818ff04df1a09f3c60166626fa Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:40:49 +0400 Subject: usb: dwc2: Update dwc2_handle_incomplete_isoc_in() function Disabled only that ISOC endpoints,for which interrupt bit was set in the DAINTMSK register. This will allow to minimize incomplete ISOC IN interrupt handling. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 3cc1e3747b7d..8e42537847d4 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3412,14 +3412,21 @@ static void dwc2_gadget_handle_incomplete_isoc_in(struct dwc2_hsotg *hsotg) { struct dwc2_hsotg_ep *hs_ep; u32 epctrl; + u32 daintmsk; u32 idx; dev_dbg(hsotg->dev, "Incomplete isoc in interrupt received:\n"); + daintmsk = dwc2_readl(hsotg->regs + DAINTMSK); + for (idx = 1; idx <= hsotg->num_of_eps; idx++) { hs_ep = hsotg->eps_in[idx]; + /* Proceed only unmasked ISOC EPs */ + if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk)) + continue; + epctrl = dwc2_readl(hsotg->regs + DIEPCTL(idx)); - if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous && + if ((epctrl & DXEPCTL_EPENA) && dwc2_gadget_target_frame_elapsed(hs_ep)) { epctrl |= DXEPCTL_SNAK; epctrl |= DXEPCTL_EPDIS; -- cgit v1.2.1 From 689efb2619b58fa21da6c9b96b74f5d1fb8d2b46 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:41:16 +0400 Subject: usb: dwc2: Update dwc2_handle_incomplete_isoc_out() function In 'for' loop skipped masked and non-ISOC EPs. Also breaked 'for' loop after setting SGOUTNAK in DCTL,when one enabled EP was detected. This will allow to minimize incomplete ISOC OUT interrupt handling. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 8e42537847d4..2ffc380ddb62 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3455,16 +3455,24 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg) { u32 gintsts; u32 gintmsk; + u32 daintmsk; u32 epctrl; struct dwc2_hsotg_ep *hs_ep; int idx; dev_dbg(hsotg->dev, "%s: GINTSTS_INCOMPL_SOOUT\n", __func__); + daintmsk = dwc2_readl(hsotg->regs + DAINTMSK); + daintmsk >>= DAINT_OUTEP_SHIFT; + for (idx = 1; idx <= hsotg->num_of_eps; idx++) { hs_ep = hsotg->eps_out[idx]; + /* Proceed only unmasked ISOC EPs */ + if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk)) + continue; + epctrl = dwc2_readl(hsotg->regs + DOEPCTL(idx)); - if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous && + if ((epctrl & DXEPCTL_EPENA) && dwc2_gadget_target_frame_elapsed(hs_ep)) { /* Unmask GOUTNAKEFF interrupt */ gintmsk = dwc2_readl(hsotg->regs + GINTMSK); @@ -3472,8 +3480,10 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg) dwc2_writel(gintmsk, hsotg->regs + GINTMSK); gintsts = dwc2_readl(hsotg->regs + GINTSTS); - if (!(gintsts & GINTSTS_GOUTNAKEFF)) + if (!(gintsts & GINTSTS_GOUTNAKEFF)) { __orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK); + break; + } } } -- cgit v1.2.1 From d84845522d93f92e2278c082f195f83ebd7dfe26 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:41:42 +0400 Subject: usb: dwc2: Update GINTSTS_GOUTNAKEFF interrupt handling Disabled only unmasked endpoints based on DAINTMSK register. This will allow to minimize GINTSTS_GOUTNAKEFF interrupt handling. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2ffc380ddb62..4509b2eb3eca 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3628,8 +3628,11 @@ irq_retry: u8 idx; u32 epctrl; u32 gintmsk; + u32 daintmsk; struct dwc2_hsotg_ep *hs_ep; + daintmsk = dwc2_readl(hsotg->regs + DAINTMSK); + daintmsk >>= DAINT_OUTEP_SHIFT; /* Mask this interrupt */ gintmsk = dwc2_readl(hsotg->regs + GINTMSK); gintmsk &= ~GINTSTS_GOUTNAKEFF; @@ -3638,9 +3641,13 @@ irq_retry: dev_dbg(hsotg->dev, "GOUTNakEff triggered\n"); for (idx = 1; idx <= hsotg->num_of_eps; idx++) { hs_ep = hsotg->eps_out[idx]; + /* Proceed only unmasked ISOC EPs */ + if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk)) + continue; + epctrl = dwc2_readl(hsotg->regs + DOEPCTL(idx)); - if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous) { + if (epctrl & DXEPCTL_EPENA) { epctrl |= DXEPCTL_SNAK; epctrl |= DXEPCTL_EPDIS; dwc2_writel(epctrl, hsotg->regs + DOEPCTL(idx)); -- cgit v1.2.1 From abd064a19d81001412281501819622d1568309e0 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:42:08 +0400 Subject: usb: dwc2: Rename bit set/clear function names Renamed __orr32 and __bic32 function names to more descriptive dwc2_set_bit and dwc2_clear_bit respectively. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 44 ++++++++++++++++++++++---------------------- 1 file changed, 22 insertions(+), 22 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 4509b2eb3eca..481684385bfe 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -47,12 +47,12 @@ static inline struct dwc2_hsotg *to_hsotg(struct usb_gadget *gadget) return container_of(gadget, struct dwc2_hsotg, gadget); } -static inline void __orr32(void __iomem *ptr, u32 val) +static inline void dwc2_set_bit(void __iomem *ptr, u32 val) { dwc2_writel(dwc2_readl(ptr) | val, ptr); } -static inline void __bic32(void __iomem *ptr, u32 val) +static inline void dwc2_clear_bit(void __iomem *ptr, u32 val) { dwc2_writel(dwc2_readl(ptr) & ~val, ptr); } @@ -3237,7 +3237,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, dwc2_hsotg_init_fifo(hsotg); if (!is_usb_reset) - __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SFTDISCON); dcfg |= DCFG_EPMISCNT(1); @@ -3283,7 +3283,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, /* Set DDMA mode support in the core if needed */ if (using_desc_dma(hsotg)) - __orr32(hsotg->regs + DCFG, DCFG_DESCDMA_EN); + dwc2_set_bit(hsotg->regs + DCFG, DCFG_DESCDMA_EN); } else { dwc2_writel(((hsotg->dedicated_fifos) ? @@ -3316,7 +3316,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, /* Enable BNA interrupt for DDMA */ if (using_desc_dma(hsotg)) - __orr32(hsotg->regs + DOEPMSK, DOEPMSK_BNAMSK); + dwc2_set_bit(hsotg->regs + DOEPMSK, DOEPMSK_BNAMSK); dwc2_writel(0, hsotg->regs + DAINTMSK); @@ -3340,9 +3340,9 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, dwc2_hsotg_ctrl_epint(hsotg, 0, 1, 1); if (!is_usb_reset) { - __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); udelay(10); /* see openiboot */ - __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); + dwc2_clear_bit(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); } dev_dbg(hsotg->dev, "DCTL=0x%08x\n", dwc2_readl(hsotg->regs + DCTL)); @@ -3369,7 +3369,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, val = DCTL_CGOUTNAK | DCTL_CGNPINNAK; if (!is_usb_reset) val |= DCTL_SFTDISCON; - __orr32(hsotg->regs + DCTL, val); + dwc2_set_bit(hsotg->regs + DCTL, val); /* must be at-least 3ms to allow bus to see disconnect */ mdelay(3); @@ -3386,13 +3386,13 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, static void dwc2_hsotg_core_disconnect(struct dwc2_hsotg *hsotg) { /* set the soft-disconnect bit */ - __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SFTDISCON); } void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg) { /* remove the soft-disconnect and let's go */ - __bic32(hsotg->regs + DCTL, DCTL_SFTDISCON); + dwc2_clear_bit(hsotg->regs + DCTL, DCTL_SFTDISCON); } /** @@ -3481,7 +3481,7 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg) gintsts = dwc2_readl(hsotg->regs + GINTSTS); if (!(gintsts & GINTSTS_GOUTNAKEFF)) { - __orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SGOUTNAK); break; } } @@ -3542,7 +3542,7 @@ irq_retry: dwc2_hsotg_disconnect(hsotg); /* Reset device address to zero */ - __bic32(hsotg->regs + DCFG, DCFG_DEVADDR_MASK); + dwc2_clear_bit(hsotg->regs + DCFG, DCFG_DEVADDR_MASK); if (usb_status & GOTGCTL_BSESVLD && connected) dwc2_hsotg_core_init_disconnected(hsotg, true); @@ -3660,7 +3660,7 @@ irq_retry: if (gintsts & GINTSTS_GINNAKEFF) { dev_info(hsotg->dev, "GINNakEff triggered\n"); - __orr32(hsotg->regs + DCTL, DCTL_CGNPINNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_CGNPINNAK); dwc2_hsotg_dump(hsotg); } @@ -3700,7 +3700,7 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, if (hs_ep->dir_in) { if (hsotg->dedicated_fifos || hs_ep->periodic) { - __orr32(hsotg->regs + epctrl_reg, DXEPCTL_SNAK); + dwc2_set_bit(hsotg->regs + epctrl_reg, DXEPCTL_SNAK); /* Wait for Nak effect */ if (dwc2_hsotg_wait_bit_set(hsotg, epint_reg, DXEPINT_INEPNAKEFF, 100)) @@ -3708,7 +3708,7 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, "%s: timeout DIEPINT.NAKEFF\n", __func__); } else { - __orr32(hsotg->regs + DCTL, DCTL_SGNPINNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SGNPINNAK); /* Wait for Nak effect */ if (dwc2_hsotg_wait_bit_set(hsotg, GINTSTS, GINTSTS_GINNAKEFF, 100)) @@ -3718,7 +3718,7 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, } } else { if (!(dwc2_readl(hsotg->regs + GINTSTS) & GINTSTS_GOUTNAKEFF)) - __orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SGOUTNAK); /* Wait for global nak to take effect */ if (dwc2_hsotg_wait_bit_set(hsotg, GINTSTS, @@ -3728,7 +3728,7 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, } /* Disable ep */ - __orr32(hsotg->regs + epctrl_reg, DXEPCTL_EPDIS | DXEPCTL_SNAK); + dwc2_set_bit(hsotg->regs + epctrl_reg, DXEPCTL_EPDIS | DXEPCTL_SNAK); /* Wait for ep to be disabled */ if (dwc2_hsotg_wait_bit_set(hsotg, epint_reg, DXEPINT_EPDISBLD, 100)) @@ -3736,7 +3736,7 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, "%s: timeout DOEPCTL.EPDisable\n", __func__); /* Clear EPDISBLD interrupt */ - __orr32(hsotg->regs + epint_reg, DXEPINT_EPDISBLD); + dwc2_set_bit(hsotg->regs + epint_reg, DXEPINT_EPDISBLD); if (hs_ep->dir_in) { unsigned short fifo_index; @@ -3751,11 +3751,11 @@ static void dwc2_hsotg_ep_stop_xfr(struct dwc2_hsotg *hsotg, /* Clear Global In NP NAK in Shared FIFO for non periodic ep */ if (!hsotg->dedicated_fifos && !hs_ep->periodic) - __orr32(hsotg->regs + DCTL, DCTL_CGNPINNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_CGNPINNAK); } else { /* Remove global NAKs */ - __orr32(hsotg->regs + DCTL, DCTL_CGOUTNAK); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_CGOUTNAK); } } @@ -4177,7 +4177,7 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) dwc2_writel(0, hsotg->regs + DAINTMSK); /* Be in disconnected state until gadget is registered */ - __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); + dwc2_set_bit(hsotg->regs + DCTL, DCTL_SFTDISCON); /* setup fifos */ @@ -4199,7 +4199,7 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) dwc2_writel(usbcfg, hsotg->regs + GUSBCFG); if (using_dma(hsotg)) - __orr32(hsotg->regs + GAHBCFG, GAHBCFG_DMA_EN); + dwc2_set_bit(hsotg->regs + GAHBCFG, GAHBCFG_DMA_EN); } /** -- cgit v1.2.1 From e890f1dae3ae15525f1331bcb749f2b5f4d08cd5 Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Fri, 19 Jan 2018 14:42:35 +0400 Subject: usb: dwc2: Delete unused functionality Deleted dwc2_hcd_dump_frrem() function, because it used undefined parameters from dwc2_hsotg structure. The function body was in #ifdef statement and was never compiled. Also removed that parameters from dwc2_hsotg structure, which were used only in dwc2_hcd_dump_frrem() function. And also delete dwc2_sample_frrem macro, because without dwc2_hcd_dump_frrem() function it's lose its purpose. Acked-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 18 ------------- drivers/usb/dwc2/hcd.c | 70 ------------------------------------------------- drivers/usb/dwc2/hcd.h | 56 --------------------------------------- 3 files changed, 144 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index cc9bf68b5e7c..939ee1e538d0 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1021,24 +1021,6 @@ struct dwc2_hsotg { struct kmem_cache *desc_gen_cache; struct kmem_cache *desc_hsisoc_cache; -#ifdef DEBUG - u32 frrem_samples; - u64 frrem_accum; - - u32 hfnum_7_samples_a; - u64 hfnum_7_frrem_accum_a; - u32 hfnum_0_samples_a; - u64 hfnum_0_frrem_accum_a; - u32 hfnum_other_samples_a; - u64 hfnum_other_frrem_accum_a; - - u32 hfnum_7_samples_b; - u64 hfnum_7_frrem_accum_b; - u32 hfnum_0_samples_b; - u64 hfnum_0_frrem_accum_b; - u32 hfnum_other_samples_b; - u64 hfnum_other_frrem_accum_b; -#endif #endif /* CONFIG_USB_DWC2_HOST || CONFIG_USB_DWC2_DUAL_ROLE */ #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 516929220aa5..6cfd64ffcd7c 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3996,7 +3996,6 @@ void dwc2_hcd_dump_state(struct dwc2_hsotg *hsotg) (p_tx_status & TXSTS_QSPCAVAIL_MASK) >> TXSTS_QSPCAVAIL_SHIFT); dev_dbg(hsotg->dev, " P Tx FIFO Space Avail: %d\n", (p_tx_status & TXSTS_FSPCAVAIL_MASK) >> TXSTS_FSPCAVAIL_SHIFT); - dwc2_hcd_dump_frrem(hsotg); dwc2_dump_global_registers(hsotg); dwc2_dump_host_registers(hsotg); dev_dbg(hsotg->dev, @@ -4005,75 +4004,6 @@ void dwc2_hcd_dump_state(struct dwc2_hsotg *hsotg) #endif } -/* - * NOTE: This function will be removed once the peripheral controller code - * is integrated and the driver is stable - */ -void dwc2_hcd_dump_frrem(struct dwc2_hsotg *hsotg) -{ -#ifdef DWC2_DUMP_FRREM - dev_dbg(hsotg->dev, "Frame remaining at SOF:\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->frrem_samples, hsotg->frrem_accum, - hsotg->frrem_samples > 0 ? - hsotg->frrem_accum / hsotg->frrem_samples : 0); - dev_dbg(hsotg->dev, "\n"); - dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 7):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_7_samples, - hsotg->hfnum_7_frrem_accum, - hsotg->hfnum_7_samples > 0 ? - hsotg->hfnum_7_frrem_accum / hsotg->hfnum_7_samples : 0); - dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 0):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_0_samples, - hsotg->hfnum_0_frrem_accum, - hsotg->hfnum_0_samples > 0 ? - hsotg->hfnum_0_frrem_accum / hsotg->hfnum_0_samples : 0); - dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 1-6):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_other_samples, - hsotg->hfnum_other_frrem_accum, - hsotg->hfnum_other_samples > 0 ? - hsotg->hfnum_other_frrem_accum / hsotg->hfnum_other_samples : - 0); - dev_dbg(hsotg->dev, "\n"); - dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 7):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_7_samples_a, hsotg->hfnum_7_frrem_accum_a, - hsotg->hfnum_7_samples_a > 0 ? - hsotg->hfnum_7_frrem_accum_a / hsotg->hfnum_7_samples_a : 0); - dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 0):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_0_samples_a, hsotg->hfnum_0_frrem_accum_a, - hsotg->hfnum_0_samples_a > 0 ? - hsotg->hfnum_0_frrem_accum_a / hsotg->hfnum_0_samples_a : 0); - dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 1-6):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_other_samples_a, hsotg->hfnum_other_frrem_accum_a, - hsotg->hfnum_other_samples_a > 0 ? - hsotg->hfnum_other_frrem_accum_a / hsotg->hfnum_other_samples_a - : 0); - dev_dbg(hsotg->dev, "\n"); - dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 7):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_7_samples_b, hsotg->hfnum_7_frrem_accum_b, - hsotg->hfnum_7_samples_b > 0 ? - hsotg->hfnum_7_frrem_accum_b / hsotg->hfnum_7_samples_b : 0); - dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 0):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_0_samples_b, hsotg->hfnum_0_frrem_accum_b, - (hsotg->hfnum_0_samples_b > 0) ? - hsotg->hfnum_0_frrem_accum_b / hsotg->hfnum_0_samples_b : 0); - dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 1-6):\n"); - dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", - hsotg->hfnum_other_samples_b, hsotg->hfnum_other_frrem_accum_b, - (hsotg->hfnum_other_samples_b > 0) ? - hsotg->hfnum_other_frrem_accum_b / hsotg->hfnum_other_samples_b - : 0); -#endif -} - struct wrapper_priv_data { struct dwc2_hsotg *hsotg; }; diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h index ad60e46e66e1..96a9da5fb202 100644 --- a/drivers/usb/dwc2/hcd.h +++ b/drivers/usb/dwc2/hcd.h @@ -783,19 +783,6 @@ int dwc2_hcd_is_b_host(struct dwc2_hsotg *hsotg); */ void dwc2_hcd_dump_state(struct dwc2_hsotg *hsotg); -/** - * dwc2_hcd_dump_frrem() - Dumps the average frame remaining at SOF - * - * @hsotg: The DWC2 HCD - * - * This can be used to determine average interrupt latency. Frame remaining is - * also shown for start transfer and two additional sample points. - * - * NOTE: This function will be removed once the peripheral controller code - * is integrated and the driver is stable - */ -void dwc2_hcd_dump_frrem(struct dwc2_hsotg *hsotg); - /* URB interface */ /* Transfer flags */ @@ -813,47 +800,4 @@ int dwc2_host_get_speed(struct dwc2_hsotg *hsotg, void *context); void dwc2_host_complete(struct dwc2_hsotg *hsotg, struct dwc2_qtd *qtd, int status); -#ifdef DEBUG -/* - * Macro to sample the remaining PHY clocks left in the current frame. This - * may be used during debugging to determine the average time it takes to - * execute sections of code. There are two possible sample points, "a" and - * "b", so the _letter_ argument must be one of these values. - * - * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For - * example, "cat /sys/devices/lm0/hcd_frrem". - */ -#define dwc2_sample_frrem(_hcd_, _qh_, _letter_) \ -do { \ - struct hfnum_data _hfnum_; \ - struct dwc2_qtd *_qtd_; \ - \ - _qtd_ = list_entry((_qh_)->qtd_list.next, struct dwc2_qtd, \ - qtd_list_entry); \ - if (usb_pipeint(_qtd_->urb->pipe) && \ - (_qh_)->start_active_frame != 0 && !_qtd_->complete_split) { \ - _hfnum_.d32 = dwc2_readl((_hcd_)->regs + HFNUM); \ - switch (_hfnum_.b.frnum & 0x7) { \ - case 7: \ - (_hcd_)->hfnum_7_samples_##_letter_++; \ - (_hcd_)->hfnum_7_frrem_accum_##_letter_ += \ - _hfnum_.b.frrem; \ - break; \ - case 0: \ - (_hcd_)->hfnum_0_samples_##_letter_++; \ - (_hcd_)->hfnum_0_frrem_accum_##_letter_ += \ - _hfnum_.b.frrem; \ - break; \ - default: \ - (_hcd_)->hfnum_other_samples_##_letter_++; \ - (_hcd_)->hfnum_other_frrem_accum_##_letter_ += \ - _hfnum_.b.frrem; \ - break; \ - } \ - } \ -} while (0) -#else -#define dwc2_sample_frrem(_hcd_, _qh_, _letter_) do {} while (0) -#endif - #endif /* __DWC2_HCD_H__ */ -- cgit v1.2.1 From 9d729a7a7ac531b1de335d7b9ae8bd4de8036ab9 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:43:27 +0400 Subject: usb: dwc2: Remove unnecessary debug prints Removed unnecessary debug prints about DMA mode for host side from dwc2_gahbcfg_init() function. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 6cfd64ffcd7c..d4b61330dfbb 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -308,22 +308,10 @@ static int dwc2_gahbcfg_init(struct dwc2_hsotg *hsotg) break; } - dev_dbg(hsotg->dev, "host_dma:%d dma_desc_enable:%d\n", - hsotg->params.host_dma, - hsotg->params.dma_desc_enable); - - if (hsotg->params.host_dma) { - if (hsotg->params.dma_desc_enable) - dev_dbg(hsotg->dev, "Using Descriptor DMA mode\n"); - else - dev_dbg(hsotg->dev, "Using Buffer DMA mode\n"); - } else { - dev_dbg(hsotg->dev, "Using Slave mode\n"); - hsotg->params.dma_desc_enable = false; - } - if (hsotg->params.host_dma) ahbcfg |= GAHBCFG_DMA_EN; + else + hsotg->params.dma_desc_enable = false; dwc2_writel(ahbcfg, hsotg->regs + GAHBCFG); -- cgit v1.2.1 From a82c7abdf8fc3b09c4a0ed2eee6d43ecef2ccdb0 Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Fri, 19 Jan 2018 14:43:53 +0400 Subject: usb: dwc2: hcd: Fix host channel halt flow According databook in Buffer and External DMA mode non-split periodic channels can't be halted. Acked-by: John Youn Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index d4b61330dfbb..2cb4f4f3981f 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -977,6 +977,24 @@ void dwc2_hc_halt(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan, if (dbg_hc(chan)) dev_vdbg(hsotg->dev, "%s()\n", __func__); + + /* + * In buffer DMA or external DMA mode channel can't be halted + * for non-split periodic channels. At the end of the next + * uframe/frame (in the worst case), the core generates a channel + * halted and disables the channel automatically. + */ + if ((hsotg->params.g_dma && !hsotg->params.g_dma_desc) || + hsotg->hw_params.arch == GHWCFG2_EXT_DMA_ARCH) { + if (!chan->do_split && + (chan->ep_type == USB_ENDPOINT_XFER_ISOC || + chan->ep_type == USB_ENDPOINT_XFER_INT)) { + dev_err(hsotg->dev, "%s() Channel can't be halted\n", + __func__); + return; + } + } + if (halt_status == DWC2_HC_XFER_NO_HALT_STATUS) dev_err(hsotg->dev, "!!! halt_status = %d !!!\n", halt_status); -- cgit v1.2.1 From 92a8dd26464e1f21f1d869ec53717bd2c1200d63 Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Fri, 19 Jan 2018 14:44:20 +0400 Subject: usb: dwc2: host: Fix transaction errors in host mode Added missing GUSBCFG programming in host mode, which fixes transaction errors issue on HiKey and Altera Cyclone V boards. These field even if was programmed in device mode (in function dwc2_hsotg_core_init_disconnected()) will be resetting to POR values after core soft reset applied. So, each time when switching to host mode required to set this field to correct value. Acked-by: John Youn Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 2cb4f4f3981f..6f7f9c73b596 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2328,10 +2328,22 @@ static int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup) */ static void dwc2_core_host_init(struct dwc2_hsotg *hsotg) { - u32 hcfg, hfir, otgctl; + u32 hcfg, hfir, otgctl, usbcfg; dev_dbg(hsotg->dev, "%s(%p)\n", __func__, hsotg); + /* Set HS/FS Timeout Calibration to 7 (max available value). + * The number of PHY clocks that the application programs in + * this field is added to the high/full speed interpacket timeout + * duration in the core to account for any additional delays + * introduced by the PHY. This can be required, because the delay + * introduced by the PHY in generating the linestate condition + * can vary from one PHY to another. + */ + usbcfg = dwc2_readl(hsotg->regs + GUSBCFG); + usbcfg |= GUSBCFG_TOUTCAL(7); + dwc2_writel(usbcfg, hsotg->regs + GUSBCFG); + /* Restart the Phy Clock */ dwc2_writel(0, hsotg->regs + PCGCTL); -- cgit v1.2.1 From 8f55fd6041323dd528e85d4303519d053110a5d4 Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Fri, 19 Jan 2018 14:44:46 +0400 Subject: usb: dwc2: Change TxFIFO and RxFIFO flushing flow Before flushing fifos required to check AHB master state and lush when AHB master is in IDLE state. Acked-by: John Youn Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 6294cee64e60..e85f2d230da4 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -675,6 +675,11 @@ void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num) dev_vdbg(hsotg->dev, "Flush Tx FIFO %d\n", num); + /* Wait for AHB master IDLE state */ + if (dwc2_hsotg_wait_bit_set(hsotg, GRSTCTL, GRSTCTL_AHBIDLE, 10000)) + dev_warn(hsotg->dev, "%s: HANG! AHB Idle GRSCTL\n", + __func__); + greset = GRSTCTL_TXFFLSH; greset |= num << GRSTCTL_TXFNUM_SHIFT & GRSTCTL_TXFNUM_MASK; dwc2_writel(greset, hsotg->regs + GRSTCTL); @@ -698,6 +703,11 @@ void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg) dev_vdbg(hsotg->dev, "%s()\n", __func__); + /* Wait for AHB master IDLE state */ + if (dwc2_hsotg_wait_bit_set(hsotg, GRSTCTL, GRSTCTL_AHBIDLE, 10000)) + dev_warn(hsotg->dev, "%s: HANG! AHB Idle GRSCTL\n", + __func__); + greset = GRSTCTL_RXFFLSH; dwc2_writel(greset, hsotg->regs + GRSTCTL); -- cgit v1.2.1 From b10129de2ef40613bdaaa6993bda5360fbaa3224 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 19 Jan 2018 14:45:12 +0400 Subject: usb: dwc2: pci: Replace kzalloc() with devm_kzalloc() Use devm_kzalloc() and remove the unnecessary kfree(). Acked-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/pci.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c index 3ecc951a1aea..8c6a65188412 100644 --- a/drivers/usb/dwc2/pci.c +++ b/drivers/usb/dwc2/pci.c @@ -83,7 +83,6 @@ static void dwc2_pci_remove(struct pci_dev *pci) platform_device_unregister(glue->dwc2); usb_phy_generic_unregister(glue->phy); - kfree(glue); pci_set_drvdata(pci, NULL); } @@ -147,7 +146,7 @@ static int dwc2_pci_probe(struct pci_dev *pci, goto err; } - glue = kzalloc(sizeof(*glue), GFP_KERNEL); + glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) return -ENOMEM; -- cgit v1.2.1 From a127cccd869b4418dcfaefe96bfa672287b32719 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 19 Jan 2018 14:45:38 +0400 Subject: usb: dwc2: pci: Move usb_phy_generic_register() Move usb_phy_generic_register() function call to the top, to simplify error handling. If this fails we can simply return instead of cleaning up. Acked-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/pci.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c index 8c6a65188412..11b8ffb6656b 100644 --- a/drivers/usb/dwc2/pci.c +++ b/drivers/usb/dwc2/pci.c @@ -104,6 +104,13 @@ static int dwc2_pci_probe(struct pci_dev *pci, pci_set_master(pci); + phy = usb_phy_generic_register(); + if (IS_ERR(phy)) { + dev_err(dev, "error registering generic PHY (%ld)\n", + PTR_ERR(phy)); + return PTR_ERR(phy); + } + dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); if (!dwc2) { dev_err(dev, "couldn't allocate dwc2 device\n"); @@ -129,13 +136,6 @@ static int dwc2_pci_probe(struct pci_dev *pci, dwc2->dev.parent = dev; - phy = usb_phy_generic_register(); - if (IS_ERR(phy)) { - dev_err(dev, "error registering generic PHY (%ld)\n", - PTR_ERR(phy)); - return PTR_ERR(phy); - } - ret = dwc2_pci_quirks(pci, dwc2); if (ret) goto err; -- cgit v1.2.1 From fb50aacdcf124d98ed93d4cc87867aa60011b52d Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 19 Jan 2018 14:46:04 +0400 Subject: usb: dwc2: pci: Move devm_kzalloc() before platform_device_add() After platform_device_add(), if we error out, we must do platform_device_unregister(), which also does the put. So lets move devm_kzalloc() to simplify error handling and avoid calling of platform_device_unregister(). Acked-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/pci.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c index 11b8ffb6656b..0943f0d40fe4 100644 --- a/drivers/usb/dwc2/pci.c +++ b/drivers/usb/dwc2/pci.c @@ -140,16 +140,16 @@ static int dwc2_pci_probe(struct pci_dev *pci, if (ret) goto err; + glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; + ret = platform_device_add(dwc2); if (ret) { dev_err(dev, "failed to register dwc2 device\n"); goto err; } - glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); - if (!glue) - return -ENOMEM; - glue->phy = phy; glue->dwc2 = dwc2; pci_set_drvdata(pci, glue); -- cgit v1.2.1 From ecd29dabb2ba2e4a29339bf55129fd1058107206 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 19 Jan 2018 14:46:30 +0400 Subject: usb: dwc2: pci: Handle error cleanup in probe The probe function doesn't properly handle errors. Fix it so that it properly handles cleanup. Acked-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/pci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c index 0943f0d40fe4..7f21747007f1 100644 --- a/drivers/usb/dwc2/pci.c +++ b/drivers/usb/dwc2/pci.c @@ -114,7 +114,7 @@ static int dwc2_pci_probe(struct pci_dev *pci, dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); if (!dwc2) { dev_err(dev, "couldn't allocate dwc2 device\n"); - return -ENOMEM; + goto err; } memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); @@ -131,7 +131,7 @@ static int dwc2_pci_probe(struct pci_dev *pci, ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc2 device\n"); - return ret; + goto err; } dwc2->dev.parent = dev; @@ -142,7 +142,7 @@ static int dwc2_pci_probe(struct pci_dev *pci, glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) - return -ENOMEM; + goto err; ret = platform_device_add(dwc2); if (ret) { -- cgit v1.2.1 From 12814a3f8f9b247531d7863170cc82b3fe4218fd Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Tue, 6 Feb 2018 19:07:38 +0400 Subject: usb: dwc2: Fix interval type issue The maximum value that unsigned char can hold is 255, meanwhile the maximum value of interval is 2^(bIntervalMax-1)=2^15. Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 939ee1e538d0..db5c02bd4420 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -217,7 +217,7 @@ struct dwc2_hsotg_ep { unsigned char dir_in; unsigned char index; unsigned char mc; - unsigned char interval; + u16 interval; unsigned int halted:1; unsigned int periodic:1; -- cgit v1.2.1 From 7c55984e191f0f5436c1cd1d1e1a3c297458cfba Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Thu, 1 Feb 2018 10:34:31 +0100 Subject: usb: gadget: udc: atmel: remove code related to platform stuff With the removal of AVR platforms, code related to platform stuff is useless. Signed-off-by: Ludovic Desroches Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 73 +-------------------------------- 1 file changed, 2 insertions(+), 71 deletions(-) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index f420710abdd7..1c4d52dbdf71 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -2019,7 +2019,6 @@ static int atmel_usba_stop(struct usb_gadget *gadget) return 0; } -#ifdef CONFIG_OF static void at91sam9rl_toggle_bias(struct usba_udc *udc, int is_on) { regmap_update_bits(udc->pmc, AT91_CKGR_UCKR, AT91_PMC_BIASEN, @@ -2204,71 +2203,6 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, err: return ERR_PTR(ret); } -#else -static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, - struct usba_udc *udc) -{ - return ERR_PTR(-ENOSYS); -} -#endif - -static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, - struct usba_udc *udc) -{ - struct usba_platform_data *pdata = dev_get_platdata(&pdev->dev); - struct usba_ep *eps; - int i; - - if (!pdata) - return ERR_PTR(-ENXIO); - - eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * pdata->num_ep, - GFP_KERNEL); - if (!eps) - return ERR_PTR(-ENOMEM); - - udc->gadget.ep0 = &eps[0].ep; - - udc->vbus_pin = pdata->vbus_pin; - udc->vbus_pin_inverted = pdata->vbus_pin_inverted; - udc->num_ep = pdata->num_ep; - - INIT_LIST_HEAD(&eps[0].ep.ep_list); - - for (i = 0; i < pdata->num_ep; i++) { - struct usba_ep *ep = &eps[i]; - - ep->ep_regs = udc->regs + USBA_EPT_BASE(i); - ep->dma_regs = udc->regs + USBA_DMA_BASE(i); - ep->fifo = udc->fifo + USBA_FIFO_BASE(i); - ep->ep.ops = &usba_ep_ops; - ep->ep.name = pdata->ep[i].name; - ep->fifo_size = pdata->ep[i].fifo_size; - usb_ep_set_maxpacket_limit(&ep->ep, ep->fifo_size); - ep->udc = udc; - INIT_LIST_HEAD(&ep->queue); - ep->nr_banks = pdata->ep[i].nr_banks; - ep->index = pdata->ep[i].index; - ep->can_dma = pdata->ep[i].can_dma; - ep->can_isoc = pdata->ep[i].can_isoc; - - if (i == 0) { - ep->ep.caps.type_control = true; - } else { - ep->ep.caps.type_iso = ep->can_isoc; - ep->ep.caps.type_bulk = true; - ep->ep.caps.type_int = true; - } - - ep->ep.caps.dir_in = true; - ep->ep.caps.dir_out = true; - - if (i) - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - } - - return eps; -} static int usba_udc_probe(struct platform_device *pdev) { @@ -2327,10 +2261,7 @@ static int usba_udc_probe(struct platform_device *pdev) usba_writel(udc, CTRL, USBA_DISABLE_MASK); clk_disable_unprepare(pclk); - if (pdev->dev.of_node) - udc->usba_ep = atmel_udc_of_init(pdev, udc); - else - udc->usba_ep = usba_udc_pdata(pdev, udc); + udc->usba_ep = atmel_udc_of_init(pdev, udc); toggle_bias(udc, 0); @@ -2454,7 +2385,7 @@ static struct platform_driver udc_driver = { .driver = { .name = "atmel_usba_udc", .pm = &usba_udc_pm_ops, - .of_match_table = of_match_ptr(atmel_udc_dt_ids), + .of_match_table = atmel_udc_dt_ids, }, }; -- cgit v1.2.1 From 3df034081021fa4b6967ce3364bc7d867ec1c870 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Thu, 1 Feb 2018 10:34:32 +0100 Subject: usb: gadget: udc: atmel: convert to use GPIO descriptors Use GPIO descriptors instead of relying on the old method. Include irq.h header since it is needed and was indirectly included through of_gpio.h. Reviewed-by: Linus Walleij Signed-off-by: Ludovic Desroches Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 51 ++++++++++++++------------------- drivers/usb/gadget/udc/atmel_usba_udc.h | 4 ++- 2 files changed, 25 insertions(+), 30 deletions(-) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 1c4d52dbdf71..27c16399c7e8 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -23,7 +23,8 @@ #include #include #include -#include +#include +#include #include "atmel_usba_udc.h" #define USBA_VBUS_IRQFLAGS (IRQF_ONESHOT \ @@ -415,8 +416,8 @@ static inline void usba_int_enb_set(struct usba_udc *udc, u32 val) static int vbus_is_present(struct usba_udc *udc) { - if (gpio_is_valid(udc->vbus_pin)) - return gpio_get_value(udc->vbus_pin) ^ udc->vbus_pin_inverted; + if (udc->vbus_pin) + return gpiod_get_value(udc->vbus_pin) ^ udc->vbus_pin_inverted; /* No Vbus detection: Assume always present */ return 1; @@ -1975,8 +1976,8 @@ static int atmel_usba_start(struct usb_gadget *gadget, mutex_lock(&udc->vbus_mutex); - if (gpio_is_valid(udc->vbus_pin)) - enable_irq(gpio_to_irq(udc->vbus_pin)); + if (udc->vbus_pin) + enable_irq(gpiod_to_irq(udc->vbus_pin)); /* If Vbus is present, enable the controller and wait for reset */ udc->vbus_prev = vbus_is_present(udc); @@ -1990,8 +1991,8 @@ static int atmel_usba_start(struct usb_gadget *gadget, return 0; err: - if (gpio_is_valid(udc->vbus_pin)) - disable_irq(gpio_to_irq(udc->vbus_pin)); + if (udc->vbus_pin) + disable_irq(gpiod_to_irq(udc->vbus_pin)); mutex_unlock(&udc->vbus_mutex); @@ -2006,8 +2007,8 @@ static int atmel_usba_stop(struct usb_gadget *gadget) { struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget); - if (gpio_is_valid(udc->vbus_pin)) - disable_irq(gpio_to_irq(udc->vbus_pin)); + if (udc->vbus_pin) + disable_irq(gpiod_to_irq(udc->vbus_pin)); if (fifo_mode == 0) udc->configured_ep = 1; @@ -2054,7 +2055,6 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, { u32 val; const char *name; - enum of_gpio_flags flags; struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; struct device_node *pp; @@ -2074,9 +2074,9 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, udc->num_ep = 0; - udc->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, - &flags); - udc->vbus_pin_inverted = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; + udc->vbus_pin = devm_gpiod_get_optional(&pdev->dev, "atmel,vbus", + GPIOD_IN); + udc->vbus_pin_inverted = gpiod_is_active_low(udc->vbus_pin); if (fifo_mode == 0) { pp = NULL; @@ -2247,7 +2247,6 @@ static int usba_udc_probe(struct platform_device *pdev) udc->pdev = pdev; udc->pclk = pclk; udc->hclk = hclk; - udc->vbus_pin = -ENODEV; platform_set_drvdata(pdev, udc); @@ -2277,24 +2276,18 @@ static int usba_udc_probe(struct platform_device *pdev) } udc->irq = irq; - if (gpio_is_valid(udc->vbus_pin)) { - if (!devm_gpio_request(&pdev->dev, udc->vbus_pin, "atmel_usba_udc")) { - irq_set_status_flags(gpio_to_irq(udc->vbus_pin), - IRQ_NOAUTOEN); - ret = devm_request_threaded_irq(&pdev->dev, - gpio_to_irq(udc->vbus_pin), NULL, + if (udc->vbus_pin) { + irq_set_status_flags(gpiod_to_irq(udc->vbus_pin), IRQ_NOAUTOEN); + ret = devm_request_threaded_irq(&pdev->dev, + gpiod_to_irq(udc->vbus_pin), NULL, usba_vbus_irq_thread, USBA_VBUS_IRQFLAGS, "atmel_usba_udc", udc); if (ret) { - udc->vbus_pin = -ENODEV; + udc->vbus_pin = NULL; dev_warn(&udc->pdev->dev, "failed to request vbus irq; " "assuming always on\n"); } - } else { - /* gpio_request fail so use -EINVAL for gpio_is_valid */ - udc->vbus_pin = -EINVAL; - } } ret = usb_add_gadget_udc(&pdev->dev, &udc->gadget); @@ -2346,9 +2339,9 @@ static int usba_udc_suspend(struct device *dev) * Device may wake up. We stay clocked if we failed * to request vbus irq, assuming always on. */ - if (gpio_is_valid(udc->vbus_pin)) { + if (udc->vbus_pin) { usba_stop(udc); - enable_irq_wake(gpio_to_irq(udc->vbus_pin)); + enable_irq_wake(gpiod_to_irq(udc->vbus_pin)); } out: @@ -2364,8 +2357,8 @@ static int usba_udc_resume(struct device *dev) if (!udc->driver) return 0; - if (device_may_wakeup(dev) && gpio_is_valid(udc->vbus_pin)) - disable_irq_wake(gpio_to_irq(udc->vbus_pin)); + if (device_may_wakeup(dev) && udc->vbus_pin) + disable_irq_wake(gpiod_to_irq(udc->vbus_pin)); /* If Vbus is present, enable the controller and wait for reset */ mutex_lock(&udc->vbus_mutex); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index 860a00a6fdd0..969ce8f3c3e2 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -7,6 +7,8 @@ #ifndef __LINUX_USB_GADGET_USBA_UDC_H__ #define __LINUX_USB_GADGET_USBA_UDC_H__ +#include + /* USB register offsets */ #define USBA_CTRL 0x0000 #define USBA_FNUM 0x0004 @@ -323,7 +325,7 @@ struct usba_udc { struct platform_device *pdev; const struct usba_udc_errata *errata; int irq; - int vbus_pin; + struct gpio_desc *vbus_pin; int vbus_pin_inverted; int num_ep; int configured_ep; -- cgit v1.2.1 From 42c6a25235677ad3568af080b0569e05a9f849fc Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Mon, 12 Feb 2018 21:20:08 +0100 Subject: usb: dwc2: Print error if unable to set DMA coherent mask We better print an error in case probing of dwc2 fails on setting the DMA coherent mask. Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/platform.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 9f39b15e7605..65e1af5e491a 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -382,8 +382,10 @@ static int dwc2_driver_probe(struct platform_device *dev) if (!dev->dev.dma_mask) dev->dev.dma_mask = &dev->dev.coherent_dma_mask; retval = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32)); - if (retval) + if (retval) { + dev_err(&dev->dev, "can't set coherent DMA mask: %d\n", retval); return retval; + } res = platform_get_resource(dev, IORESOURCE_MEM, 0); hsotg->regs = devm_ioremap_resource(&dev->dev, res); -- cgit v1.2.1 From 66e77a24a8c36ff83f0a12f44d23d8141e82fa3b Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Wed, 24 Jan 2018 17:40:29 +0400 Subject: usb: dwc2: Add ACG support to the driver Added function for supporting Active Clock Gating functionality in the driver. PCGCCTL1 (Power and Clock Control) register will be used for controlling the core`s active clock gating feature, and the previously reserved 12th bit in GHWCFG4 now indicates that the controller supports the Dynamic Power Reduction (Active Clock Gating) during no traffic scenarios such as L0, idle, resume and suspend states. dwc2_enable_acg() function sets GATEEN bit in PCGCCTL1 register and enables ACG, if it supported. According to ACG functional specification, enabling of ACG feature in host mode done in host initialization, before turning Vbus on, specifically in dwc2_core_host_init function. Enabling of ACG feature in device mode done in device initialization, before clearing the SftDiscon bit in DCTL. This bit was cleared in dwc2_hsotg_core_connect() function.So dwc2_enable_acg() called before dwc2_core_connect() calls. Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 14 ++++++++++++++ drivers/usb/dwc2/core.h | 4 ++++ drivers/usb/dwc2/gadget.c | 12 ++++++++++-- drivers/usb/dwc2/hcd.c | 5 +++++ drivers/usb/dwc2/hw.h | 5 +++++ drivers/usb/dwc2/params.c | 3 +++ 6 files changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index e85f2d230da4..204506f92620 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -498,6 +498,20 @@ int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg) return 0; } +/* + * dwc2_enable_acg - enable active clock gating feature + */ +void dwc2_enable_acg(struct dwc2_hsotg *hsotg) +{ + if (hsotg->params.acg_enable) { + u32 pcgcctl1 = dwc2_readl(hsotg->regs + PCGCCTL1); + + dev_dbg(hsotg->dev, "Enabling Active Clock Gating\n"); + pcgcctl1 |= PCGCCTL1_GATEEN; + dwc2_writel(pcgcctl1, hsotg->regs + PCGCCTL1); + } +} + /** * dwc2_dump_host_registers() - Prints the host registers * diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index db5c02bd4420..a7033b9f20f5 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -479,6 +479,7 @@ struct dwc2_core_params { bool enable_dynamic_fifo; bool en_multiple_tx_fifo; bool i2c_enable; + bool acg_enable; bool ulpi_fs_ls; bool ts_dline; bool reload_ctl; @@ -587,6 +588,7 @@ struct dwc2_hw_params { unsigned hs_phy_type:2; unsigned fs_phy_type:2; unsigned i2c_enable:1; + unsigned acg_enable:1; unsigned num_dev_ep:4; unsigned num_dev_in_eps : 4; unsigned num_dev_perio_in_ep:4; @@ -1115,6 +1117,8 @@ void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg); void dwc2_enable_global_interrupts(struct dwc2_hsotg *hcd); void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd); +void dwc2_enable_acg(struct dwc2_hsotg *hsotg); + /* This function should be called on every hardware interrupt. */ irqreturn_t dwc2_handle_common_intr(int irq, void *dev); diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 481684385bfe..47b098380f10 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4346,6 +4346,8 @@ static int dwc2_hsotg_pullup(struct usb_gadget *gadget, int is_on) if (is_on) { hsotg->enabled = 1; dwc2_hsotg_core_init_disconnected(hsotg, false); + /* Enable ACG feature in device mode,if supported */ + dwc2_enable_acg(hsotg); dwc2_hsotg_core_connect(hsotg); } else { dwc2_hsotg_core_disconnect(hsotg); @@ -4378,8 +4380,11 @@ static int dwc2_hsotg_vbus_session(struct usb_gadget *gadget, int is_active) hsotg->op_state = OTG_STATE_B_PERIPHERAL; dwc2_hsotg_core_init_disconnected(hsotg, false); - if (hsotg->enabled) + if (hsotg->enabled) { + /* Enable ACG feature in device mode,if supported */ + dwc2_enable_acg(hsotg); dwc2_hsotg_core_connect(hsotg); + } } else { dwc2_hsotg_core_disconnect(hsotg); dwc2_hsotg_disconnect(hsotg); @@ -4744,8 +4749,11 @@ int dwc2_hsotg_resume(struct dwc2_hsotg *hsotg) spin_lock_irqsave(&hsotg->lock, flags); dwc2_hsotg_core_init_disconnected(hsotg, false); - if (hsotg->enabled) + if (hsotg->enabled) { + /* Enable ACG feature in device mode,if supported */ + dwc2_enable_acg(hsotg); dwc2_hsotg_core_connect(hsotg); + } spin_unlock_irqrestore(&hsotg->lock, flags); } diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 6f7f9c73b596..edcc9058274a 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2436,6 +2436,9 @@ static void dwc2_core_host_init(struct dwc2_hsotg *hsotg) } } + /* Enable ACG feature in host mode, if supported */ + dwc2_enable_acg(hsotg); + /* Turn on the vbus power */ dev_dbg(hsotg->dev, "Init: Port Power? op_state=%d\n", hsotg->op_state); if (hsotg->op_state == OTG_STATE_A_HOST) { @@ -3302,6 +3305,8 @@ static void dwc2_conn_id_status_change(struct work_struct *work) spin_lock_irqsave(&hsotg->lock, flags); dwc2_hsotg_core_init_disconnected(hsotg, false); spin_unlock_irqrestore(&hsotg->lock, flags); + /* Enable ACG feature in device mode,if supported */ + dwc2_enable_acg(hsotg); dwc2_hsotg_core_connect(hsotg); } else { host: diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 43a3fb00f14f..bfb85519af32 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -310,6 +310,7 @@ #define GHWCFG4_NUM_DEV_MODE_CTRL_EP_SHIFT 16 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK (0x3 << 14) #define GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT 14 +#define GHWCFG4_ACG_SUPPORTED BIT(12) #define GHWCFG4_UTMI_PHY_DATA_WIDTH_8 0 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_16 1 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16 2 @@ -645,6 +646,10 @@ #define PCGCTL_GATEHCLK BIT(1) #define PCGCTL_STOPPCLK BIT(0) +#define PCGCCTL1 HSOTG_REG(0xe04) +#define PCGCCTL1_TIMER (0x3 << 1) +#define PCGCCTL1_GATEEN BIT(0) + #define EPFIFO(_a) HSOTG_REG(0x1000 + ((_a) * 0x1000)) /* Host Mode Registers */ diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 430325510812..f0f877c4528d 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -272,6 +272,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->enable_dynamic_fifo = hw->enable_dynamic_fifo; p->en_multiple_tx_fifo = hw->en_multiple_tx_fifo; p->i2c_enable = hw->i2c_enable; + p->acg_enable = hw->acg_enable; p->ulpi_fs_ls = false; p->ts_dline = false; p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a); @@ -526,6 +527,7 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg) CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo); CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo); CHECK_BOOL(i2c_enable, hw->i2c_enable); + CHECK_BOOL(acg_enable, hw->acg_enable); CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a)); CHECK_RANGE(max_packet_count, 15, hw->max_packet_count, @@ -716,6 +718,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ); hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >> GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT; + hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED); /* fifo sizes */ hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >> -- cgit v1.2.1 From 600a490e180fb95e487b180f00985567c00fa9a9 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Wed, 24 Jan 2018 17:40:56 +0400 Subject: usb: dwc2: Backup and restore PCGCCTL1 register Backup PCGCCTL1 register when entering hibernation mode and restore it after exiting from hibernation, to keep active ACG feature. Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 2 ++ drivers/usb/dwc2/core.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 204506f92620..346150922dbd 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -80,6 +80,7 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) gr->gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); gr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); gr->gdfifocfg = dwc2_readl(hsotg->regs + GDFIFOCFG); + gr->pcgcctl1 = dwc2_readl(hsotg->regs + PCGCCTL1); for (i = 0; i < MAX_EPS_CHANNELS; i++) gr->dtxfsiz[i] = dwc2_readl(hsotg->regs + DPTXFSIZN(i)); @@ -119,6 +120,7 @@ static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) dwc2_writel(gr->gnptxfsiz, hsotg->regs + GNPTXFSIZ); dwc2_writel(gr->hptxfsiz, hsotg->regs + HPTXFSIZ); dwc2_writel(gr->gdfifocfg, hsotg->regs + GDFIFOCFG); + dwc2_writel(gr->pcgcctl1, hsotg->regs + PCGCCTL1); for (i = 0; i < MAX_EPS_CHANNELS; i++) dwc2_writel(gr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i)); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index a7033b9f20f5..f6daa58446ae 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -628,6 +628,7 @@ struct dwc2_gregs_backup { u32 gi2cctl; u32 hptxfsiz; u32 pcgcctl; + u32 pcgcctl1; u32 gdfifocfg; u32 dtxfsiz[MAX_EPS_CHANNELS]; u32 gpwrdn; -- cgit v1.2.1 From 391f8081d20bf1fcffc5556f94f3cf75c4d14e01 Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:41:22 +0400 Subject: usb: dwc2: Rename GLPMCFG... definitions Make field names of GLPMCFG register in definitions to be the same with the databook. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hw.h | 38 ++++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 18 deletions(-) diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index bfb85519af32..38391e48351f 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -322,28 +322,30 @@ #define GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT 0 #define GLPMCFG HSOTG_REG(0x0054) -#define GLPMCFG_INV_SEL_HSIC BIT(31) -#define GLPMCFG_HSIC_CONNECT BIT(30) -#define GLPMCFG_RETRY_COUNT_STS_MASK (0x7 << 25) -#define GLPMCFG_RETRY_COUNT_STS_SHIFT 25 -#define GLPMCFG_SEND_LPM BIT(24) -#define GLPMCFG_RETRY_COUNT_MASK (0x7 << 21) -#define GLPMCFG_RETRY_COUNT_SHIFT 21 -#define GLPMCFG_LPM_CHAN_INDEX_MASK (0xf << 17) -#define GLPMCFG_LPM_CHAN_INDEX_SHIFT 17 -#define GLPMCFG_SLEEP_STATE_RESUMEOK BIT(16) -#define GLPMCFG_PRT_SLEEP_STS BIT(15) -#define GLPMCFG_LPM_RESP_MASK (0x3 << 13) -#define GLPMCFG_LPM_RESP_SHIFT 13 +#define GLPMCFG_INVSELHSIC BIT(31) +#define GLPMCFG_HSICCON BIT(30) +#define GLPMCFG_RSTRSLPSTS BIT(29) +#define GLPMCFG_ENBESL BIT(28) +#define GLPMCFG_LPM_RETRYCNT_STS_MASK (0x7 << 25) +#define GLPMCFG_LPM_RETRYCNT_STS_SHIFT 25 +#define GLPMCFG_SNDLPM BIT(24) +#define GLPMCFG_RETRY_CNT_MASK (0x7 << 21) +#define GLPMCFG_RETRY_CNT_SHIFT 21 +#define GLPMCFG_LPM_CHNL_INDX_MASK (0xf << 17) +#define GLPMCFG_LPM_CHNL_INDX_SHIFT 17 +#define GLPMCFG_L1RESUMEOK BIT(16) +#define GLPMCFG_SLPSTS BIT(15) +#define GLPMCFG_COREL1RES_MASK (0x3 << 13) +#define GLPMCFG_COREL1RES_SHIFT 13 #define GLPMCFG_HIRD_THRES_MASK (0x1f << 8) #define GLPMCFG_HIRD_THRES_SHIFT 8 -#define GLPMCFG_HIRD_THRES_EN (0x10 << 8) -#define GLPMCFG_EN_UTMI_SLEEP BIT(7) -#define GLPMCFG_REM_WKUP_EN BIT(6) +#define GLPMCFG_HIRD_THRES_EN (0x10 << 8) +#define GLPMCFG_ENBLSLPM BIT(7) +#define GLPMCFG_BREMOTEWAKE BIT(6) #define GLPMCFG_HIRD_MASK (0xf << 2) #define GLPMCFG_HIRD_SHIFT 2 -#define GLPMCFG_APPL_RESP BIT(1) -#define GLPMCFG_LPM_CAP_EN BIT(0) +#define GLPMCFG_APPL1RES BIT(1) +#define GLPMCFG_LPMCAP BIT(0) #define GPWRDN HSOTG_REG(0x0058) #define GPWRDN_MULT_VAL_ID_BC_MASK (0x1f << 24) -- cgit v1.2.1 From 6f80b6de0ecf65077b53c86967c714d42f4299e0 Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:41:48 +0400 Subject: usb: dwc2: Add core parameters for LPM support Add lpm, lpm_clock_gating, besl, hird_threshold_en and hird_threshold core parameters. These will indicate LPM and LPM Errata support as well as chosen L1 sleeping mode for the core and PHY. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 20 ++++++++++++++++++++ drivers/usb/dwc2/debugfs.c | 5 +++++ drivers/usb/dwc2/params.c | 13 +++++++++++++ 3 files changed, 38 insertions(+) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index f6daa58446ae..bd6672b8c2ff 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -427,6 +427,19 @@ enum dwc2_ep0_state { * needed. * 0 - No (default) * 1 - Yes + * @lpm: Enable LPM support. + * 0 - No + * 1 - Yes + * @lpm_clock_gating: Enable core PHY clock gating. + * 0 - No + * 1 - Yes + * @besl: Enable LPM Errata support. + * 0 - No + * 1 - Yes + * @hird_threshold_en: HIRD or HIRD Threshold enable. + * 0 - No + * 1 - Yes + * @hird_threshold: Value of BESL or HIRD Threshold. * @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO * register. * 0 - Deactivate the transceiver (default) @@ -486,6 +499,11 @@ struct dwc2_core_params { bool uframe_sched; bool external_id_pin_ctl; bool hibernation; + bool lpm; + bool lpm_clock_gating; + bool besl; + bool hird_threshold_en; + u8 hird_threshold; bool activate_stm_fs_transceiver; u16 max_packet_count; u32 max_transfer_size; @@ -595,6 +613,7 @@ struct dwc2_hw_params { unsigned total_fifo_size:16; unsigned power_optimized:1; unsigned utmi_phy_data_width:2; + unsigned lpm_mode:1; u32 snpsid; u32 dev_ep_dirs; u32 g_tx_fifo_size[MAX_EPS_CHANNELS]; @@ -950,6 +969,7 @@ struct dwc2_hsotg { /* DWC OTG HW Release versions */ #define DWC2_CORE_REV_2_71a 0x4f54271a +#define DWC2_CORE_REV_2_80a 0x4f54280a #define DWC2_CORE_REV_2_90a 0x4f54290a #define DWC2_CORE_REV_2_91a 0x4f54291a #define DWC2_CORE_REV_2_92a 0x4f54292a diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index 5e0d7f2bd2af..c475ac5eb213 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -719,6 +719,11 @@ static int params_show(struct seq_file *seq, void *v) print_param(seq, p, uframe_sched); print_param(seq, p, external_id_pin_ctl); print_param(seq, p, hibernation); + print_param(seq, p, lpm); + print_param(seq, p, lpm_clock_gating); + print_param(seq, p, besl); + print_param(seq, p, hird_threshold_en); + print_param(seq, p, hird_threshold); print_param(seq, p, host_dma); print_param(seq, p, g_dma); print_param(seq, p, g_dma_desc); diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index f0f877c4528d..827f7f81a27c 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -279,6 +279,11 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->uframe_sched = true; p->external_id_pin_ctl = false; p->hibernation = false; + p->lpm = true; + p->lpm_clock_gating = true; + p->besl = true; + p->hird_threshold_en = true; + p->hird_threshold = 4; p->max_packet_count = hw->max_packet_count; p->max_transfer_size = hw->max_transfer_size; p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT; @@ -529,6 +534,13 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg) CHECK_BOOL(i2c_enable, hw->i2c_enable); CHECK_BOOL(acg_enable, hw->acg_enable); CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a)); + CHECK_BOOL(lpm, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_80a)); + CHECK_BOOL(lpm, hw->lpm_mode); + CHECK_BOOL(lpm_clock_gating, hsotg->params.lpm); + CHECK_BOOL(besl, hsotg->params.lpm); + CHECK_BOOL(besl, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a)); + CHECK_BOOL(hird_threshold_en, hsotg->params.lpm); + CHECK_RANGE(hird_threshold, 0, hsotg->params.besl ? 12 : 7, 0); CHECK_RANGE(max_packet_count, 15, hw->max_packet_count, hw->max_packet_count); @@ -707,6 +719,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C); hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >> GHWCFG3_DFIFO_DEPTH_SHIFT; + hw->lpm_mode = !!(hwcfg3 & GHWCFG3_OTG_LPM_EN); /* hwcfg4 */ hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN); -- cgit v1.2.1 From 273d576c4d41d0577551176040c9c78d30c0cf16 Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:42:14 +0400 Subject: usb: dwc2: gadget: Add functionality to exit from LPM L1 state Add a function which will be called if device is in L1 sleep state and Resume/Remote Wakeup Detected interrupt is asserted. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core_intr.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index ab3fa1630853..6baa0c937bff 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -335,6 +335,53 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) } } +/** + * dwc2_wakeup_from_lpm_l1 - Exit the device from LPM L1 state + * + * @hsotg: Programming view of DWC_otg controller + * + */ +static void dwc2_wakeup_from_lpm_l1(struct dwc2_hsotg *hsotg) +{ + u32 glpmcfg; + u32 i = 0; + + if (hsotg->lx_state != DWC2_L1) { + dev_err(hsotg->dev, "Core isn't in DWC2_L1 state\n"); + return; + } + + glpmcfg = dwc2_readl(hsotg->regs + GLPMCFG); + if (dwc2_is_device_mode(hsotg)) { + dev_dbg(hsotg->dev, "Exit from L1 state\n"); + glpmcfg &= ~GLPMCFG_ENBLSLPM; + glpmcfg &= ~GLPMCFG_HIRD_THRES_EN; + dwc2_writel(glpmcfg, hsotg->regs + GLPMCFG); + + do { + glpmcfg = dwc2_readl(hsotg->regs + GLPMCFG); + + if (!(glpmcfg & (GLPMCFG_COREL1RES_MASK | + GLPMCFG_L1RESUMEOK | GLPMCFG_SLPSTS))) + break; + + udelay(1); + } while (++i < 200); + + if (i == 200) { + dev_err(hsotg->dev, "Failed to exit L1 sleep state in 200us.\n"); + return; + } + } else { + /* TODO */ + dev_err(hsotg->dev, "Host side LPM is not supported.\n"); + return; + } + + /* Change to L0 state */ + hsotg->lx_state = DWC2_L0; +} + /* * This interrupt indicates that the DWC_otg controller has detected a * resume or remote wakeup sequence. If the DWC_otg controller is in @@ -352,6 +399,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) dev_dbg(hsotg->dev, "++Resume or Remote Wakeup Detected Interrupt++\n"); dev_dbg(hsotg->dev, "%s lxstate = %d\n", __func__, hsotg->lx_state); + if (hsotg->lx_state == DWC2_L1) { + dwc2_wakeup_from_lpm_l1(hsotg); + return; + } + if (dwc2_is_device_mode(hsotg)) { dev_dbg(hsotg->dev, "DSTS=0x%0x\n", dwc2_readl(hsotg->regs + DSTS)); -- cgit v1.2.1 From d2521849d695a2c1f849611f39349faa70eed85f Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:42:40 +0400 Subject: usb: dwc2: gadget: LPM interrupt handler This interrupt indicates that an LPM transaction was received on the USB bus. After getting this interrupt we are going from L0 state to L1 state. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core_intr.c | 63 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 6baa0c937bff..5ad3c9df85f5 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -531,6 +531,67 @@ skip_power_saving: } } +/** + * dwc2_handle_lpm_intr - GINTSTS_LPMTRANRCVD Interrupt handler + * + * @hsotg: Programming view of DWC_otg controller + * + */ +static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg) +{ + u32 glpmcfg; + u32 pcgcctl; + u32 hird; + u32 hird_thres; + u32 hird_thres_en; + u32 enslpm; + + /* Clear interrupt */ + dwc2_writel(GINTSTS_LPMTRANRCVD, hsotg->regs + GINTSTS); + + glpmcfg = dwc2_readl(hsotg->regs + GLPMCFG); + + if (!(glpmcfg & GLPMCFG_LPMCAP)) { + dev_err(hsotg->dev, "Unexpected LPM interrupt\n"); + return; + } + + hird = (glpmcfg & GLPMCFG_HIRD_MASK) >> GLPMCFG_HIRD_SHIFT; + hird_thres = (glpmcfg & GLPMCFG_HIRD_THRES_MASK & + ~GLPMCFG_HIRD_THRES_EN) >> GLPMCFG_HIRD_THRES_SHIFT; + hird_thres_en = glpmcfg & GLPMCFG_HIRD_THRES_EN; + enslpm = glpmcfg & GLPMCFG_SNDLPM; + + if (dwc2_is_device_mode(hsotg)) { + dev_dbg(hsotg->dev, "HIRD_THRES_EN = %d\n", hird_thres_en); + + if (hird_thres_en && hird >= hird_thres) { + dev_dbg(hsotg->dev, "L1 with utmi_l1_suspend_n\n"); + } else if (enslpm) { + dev_dbg(hsotg->dev, "L1 with utmi_sleep_n\n"); + } else { + dev_dbg(hsotg->dev, "Entering Sleep with L1 Gating\n"); + + pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); + pcgcctl |= PCGCTL_ENBL_SLEEP_GATING; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + } + /** + * Examine prt_sleep_sts after TL1TokenTetry period max (10 us) + */ + udelay(10); + + glpmcfg = dwc2_readl(hsotg->regs + GLPMCFG); + + if (glpmcfg & GLPMCFG_SLPSTS) { + /* Save the current state */ + hsotg->lx_state = DWC2_L1; + dev_dbg(hsotg->dev, + "Core is in L1 sleep glpmcfg=%08x\n", glpmcfg); + } + } +} + #define GINTMSK_COMMON (GINTSTS_WKUPINT | GINTSTS_SESSREQINT | \ GINTSTS_CONIDSTSCHNG | GINTSTS_OTGINT | \ GINTSTS_MODEMIS | GINTSTS_DISCONNINT | \ @@ -605,6 +666,8 @@ irqreturn_t dwc2_handle_common_intr(int irq, void *dev) dwc2_handle_wakeup_detected_intr(hsotg); if (gintsts & GINTSTS_USBSUSP) dwc2_handle_usb_suspend_intr(hsotg); + if (gintsts & GINTSTS_LPMTRANRCVD) + dwc2_handle_lpm_intr(hsotg); if (gintsts & GINTSTS_PRTINT) { /* -- cgit v1.2.1 From 376f04015944785d0634a288c9e1d1adb4439162 Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:43:06 +0400 Subject: usb: dwc2: Enable LPM Transaction Received interrupt Enable "LPM Transaction Received" interrupt for receive an interrupt when host will send LPM token. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core_intr.c | 5 +++-- drivers/usb/dwc2/gadget.c | 3 ++- drivers/usb/dwc2/hcd.c | 3 +++ 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 5ad3c9df85f5..23599e798e24 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -560,7 +560,7 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg) hird_thres = (glpmcfg & GLPMCFG_HIRD_THRES_MASK & ~GLPMCFG_HIRD_THRES_EN) >> GLPMCFG_HIRD_THRES_SHIFT; hird_thres_en = glpmcfg & GLPMCFG_HIRD_THRES_EN; - enslpm = glpmcfg & GLPMCFG_SNDLPM; + enslpm = glpmcfg & GLPMCFG_ENBLSLPM; if (dwc2_is_device_mode(hsotg)) { dev_dbg(hsotg->dev, "HIRD_THRES_EN = %d\n", hird_thres_en); @@ -595,7 +595,8 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg) #define GINTMSK_COMMON (GINTSTS_WKUPINT | GINTSTS_SESSREQINT | \ GINTSTS_CONIDSTSCHNG | GINTSTS_OTGINT | \ GINTSTS_MODEMIS | GINTSTS_DISCONNINT | \ - GINTSTS_USBSUSP | GINTSTS_PRTINT) + GINTSTS_USBSUSP | GINTSTS_PRTINT | \ + GINTSTS_LPMTRANRCVD) /* * This function returns the Core Interrupt register diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 47b098380f10..ddfe6a94a12a 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3266,7 +3266,8 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF | GINTSTS_USBRST | GINTSTS_RESETDET | GINTSTS_ENUMDONE | GINTSTS_OTGINT | - GINTSTS_USBSUSP | GINTSTS_WKUPINT; + GINTSTS_USBSUSP | GINTSTS_WKUPINT | + GINTSTS_LPMTRANRCVD; if (!using_desc_dma(hsotg)) intmsk |= GINTSTS_INCOMPL_SOIN | GINTSTS_INCOMPL_SOOUT; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index edcc9058274a..bbd3185a7364 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -91,6 +91,9 @@ static void dwc2_enable_common_interrupts(struct dwc2_hsotg *hsotg) intmsk |= GINTSTS_WKUPINT | GINTSTS_USBSUSP | GINTSTS_SESSREQINT; + if (dwc2_is_device_mode(hsotg) && hsotg->params.lpm) + intmsk |= GINTSTS_LPMTRANRCVD; + dwc2_writel(intmsk, hsotg->regs + GINTMSK); } -- cgit v1.2.1 From 21b0340580f14d6e657439f7b7ce8cb98842dcaa Mon Sep 17 00:00:00 2001 From: Sevak Arakelyan Date: Wed, 24 Jan 2018 17:43:32 +0400 Subject: usb: dwc2: gadget: Configure the core to enable LPM Configure core in device mode to support LPM according to programming guide. Device will start giving valid responses for LPM tokens. After this patch device side LPM will start working. Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 2 ++ drivers/usb/dwc2/core_intr.c | 1 + drivers/usb/dwc2/gadget.c | 26 ++++++++++++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index bd6672b8c2ff..96799a399393 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1209,6 +1209,7 @@ int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg); +void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg); #else static inline int dwc2_hsotg_remove(struct dwc2_hsotg *dwc2) { return 0; } @@ -1236,6 +1237,7 @@ static inline int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg) { return 0; } static inline int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg) { return 0; } +static inline void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) {} #endif #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 23599e798e24..a8e43948f807 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -372,6 +372,7 @@ static void dwc2_wakeup_from_lpm_l1(struct dwc2_hsotg *hsotg) dev_err(hsotg->dev, "Failed to exit L1 sleep state in 200us.\n"); return; } + dwc2_gadget_init_lpm(hsotg); } else { /* TODO */ dev_err(hsotg->dev, "Host side LPM is not supported.\n"); diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index ddfe6a94a12a..706fecf16b52 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3372,6 +3372,9 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, val |= DCTL_SFTDISCON; dwc2_set_bit(hsotg->regs + DCTL, val); + /* configure the core to support LPM */ + dwc2_gadget_init_lpm(hsotg); + /* must be at-least 3ms to allow bus to see disconnect */ mdelay(3); @@ -4862,3 +4865,26 @@ int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) return 0; } + +/** + * dwc2_gadget_init_lpm - Configure the core to support LPM in device mode + * + * @hsotg: Programming view of DWC_otg controller + * + */ +void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) +{ + u32 val; + + if (!hsotg->params.lpm) + return; + + val = GLPMCFG_LPMCAP | GLPMCFG_APPL1RES; + val |= hsotg->params.hird_threshold_en ? GLPMCFG_HIRD_THRES_EN : 0; + val |= hsotg->params.lpm_clock_gating ? GLPMCFG_ENBLSLPM : 0; + val |= hsotg->params.hird_threshold << GLPMCFG_HIRD_THRES_SHIFT; + val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0; + dwc2_writel(val, hsotg->regs + GLPMCFG); + dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg->regs + + GLPMCFG)); +} -- cgit v1.2.1 From c655557c12ded72a41a8d04e868a10b74d957f22 Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Wed, 24 Jan 2018 17:43:58 +0400 Subject: usb: dwc2: Add call_gadget() function call Added call_gadget() function call when entering to L1 state to inform gadget that core is in L1 state. Did the same thing when exiting from L1 state to inform gadget that core is in L0 state. Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core_intr.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index a8e43948f807..46b32ec7d343 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -381,6 +381,9 @@ static void dwc2_wakeup_from_lpm_l1(struct dwc2_hsotg *hsotg) /* Change to L0 state */ hsotg->lx_state = DWC2_L0; + + /* Inform gadget to exit from L1 */ + call_gadget(hsotg, resume); } /* @@ -589,6 +592,9 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg) hsotg->lx_state = DWC2_L1; dev_dbg(hsotg->dev, "Core is in L1 sleep glpmcfg=%08x\n", glpmcfg); + + /* Inform gadget that we are in L1 state */ + call_gadget(hsotg, suspend); } } } -- cgit v1.2.1 From 88b02f2cb1e13e1ab161c5cb2d5c69f76fe05be2 Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Wed, 24 Jan 2018 17:44:25 +0400 Subject: usb: dwc2: Add core state checking Added core state checking in dwc2_hsotg_ep_queue() function to make sure that application will submit requests only in L0 state. Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 706fecf16b52..d67f9aeedf84 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1297,8 +1297,8 @@ static int dwc2_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, req->zero, req->short_not_ok); /* Prevent new request submission when controller is suspended */ - if (hs->lx_state == DWC2_L2) { - dev_dbg(hs->dev, "%s: don't submit request while suspended\n", + if (hs->lx_state != DWC2_L0) { + dev_dbg(hs->dev, "%s: submit request only in active state\n", __func__); return -EAGAIN; } -- cgit v1.2.1 From c1d5df69f55b997b327e68c24be43cf6686304bb Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 23 Jan 2018 09:45:31 -0600 Subject: usb: dwc2: gadget: Use true and false for boolean values Assign true or false to boolean variables instead of an integer value. This issue was detected with the help of Coccinelle. Acked-by: John Youn Signed-off-by: Gustavo A. R. Silva Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index d67f9aeedf84..5d91ff948972 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -116,10 +116,10 @@ static inline void dwc2_gadget_incr_frame_num(struct dwc2_hsotg_ep *hs_ep) { hs_ep->target_frame += hs_ep->interval; if (hs_ep->target_frame > DSTS_SOFFN_LIMIT) { - hs_ep->frame_overrun = 1; + hs_ep->frame_overrun = true; hs_ep->target_frame &= DSTS_SOFFN_LIMIT; } else { - hs_ep->frame_overrun = 0; + hs_ep->frame_overrun = false; } } -- cgit v1.2.1 From a5d411962c444377d0de0dc89502dbaf2e2a34e2 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 11 Feb 2018 22:15:15 +0100 Subject: dt-bindings: usb: add support for dwc3 controller on Amlogic Meson GX Amlogic Meson GX SoCs (GXL and AXG) come with a (host-only) dwc3 USB controller. This requires a clock to be enabled and a reset line to be pulsed to get the hardware into a known state. Add the documentation for this IP block, similar to "qcom,dwc3.txt". Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Tested-by: Yixun Lan Signed-off-by: Felipe Balbi --- .../devicetree/bindings/usb/amlogic,dwc3.txt | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/amlogic,dwc3.txt diff --git a/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt b/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt new file mode 100644 index 000000000000..9a8b631904fd --- /dev/null +++ b/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt @@ -0,0 +1,42 @@ +Amlogic Meson GX DWC3 USB SoC controller + +Required properties: +- compatible: depending on the SoC this should contain one of: + * amlogic,meson-axg-dwc3 + * amlogic,meson-gxl-dwc3 +- clocks: a handle for the "USB general" clock +- clock-names: must be "usb_general" +- resets: a handle for the shared "USB OTG" reset line +- reset-names: must be "usb_otg" + +Required child node: +A child node must exist to represent the core DWC3 IP block. The name of +the node is not important. The content of the node is defined in dwc3.txt. + +PHY documentation is provided in the following places: +- Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt +- Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt + +Example device nodes: + usb0: usb@ff500000 { + compatible = "amlogic,meson-axg-dwc3"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + clocks = <&clkc CLKID_USB>; + clock-names = "usb_general"; + resets = <&reset RESET_USB_OTG>; + reset-names = "usb_otg"; + + dwc3: dwc3@ff500000 { + compatible = "snps,dwc3"; + reg = <0x0 0xff500000 0x0 0x100000>; + interrupts = ; + dr_mode = "host"; + maximum-speed = "high-speed"; + snps,dis_u2_susphy_quirk; + phys = <&usb3_phy>, <&usb2_phy0>; + phy-names = "usb2-phy", "usb3-phy"; + }; + }; -- cgit v1.2.1 From ff0a632f08759e31f45b06fee27bc71c826c6b11 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 11 Feb 2018 22:15:16 +0100 Subject: usb: dwc3: of-simple: add support for shared and pulsed reset lines Some SoCs (such as Amlogic Meson GXL for example) share the reset line with other components (in case of the Meson GXL example there's a shared reset line between the USB2 PHYs, USB3 PHYs and the dwc3 controller). Additionally SoC implementations may prefer a reset pulse over level resets. For now this falls back to the old defaults, which are: - reset lines are exclusive - level resets are being used Signed-off-by: Martin Blumenstingl Tested-by: Yixun Lan Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-of-simple.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index e54c3622eb28..b6d35413c00d 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -27,6 +27,7 @@ struct dwc3_of_simple { struct clk **clks; int num_clocks; struct reset_control *resets; + bool pulse_resets; }; static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count) @@ -83,6 +84,7 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) int ret; int i; + bool shared_resets = false; simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL); if (!simple) @@ -91,16 +93,22 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) platform_set_drvdata(pdev, simple); simple->dev = dev; - simple->resets = of_reset_control_array_get_optional_exclusive(np); + simple->resets = of_reset_control_array_get(np, shared_resets, true); if (IS_ERR(simple->resets)) { ret = PTR_ERR(simple->resets); dev_err(dev, "failed to get device resets, err=%d\n", ret); return ret; } - ret = reset_control_deassert(simple->resets); - if (ret) - goto err_resetc_put; + if (simple->pulse_resets) { + ret = reset_control_reset(simple->resets); + if (ret) + goto err_resetc_put; + } else { + ret = reset_control_deassert(simple->resets); + if (ret) + goto err_resetc_put; + } ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np, "clocks", "#clock-cells")); @@ -124,7 +132,8 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) return 0; err_resetc_assert: - reset_control_assert(simple->resets); + if (!simple->pulse_resets) + reset_control_assert(simple->resets); err_resetc_put: reset_control_put(simple->resets); @@ -145,7 +154,9 @@ static int dwc3_of_simple_remove(struct platform_device *pdev) } simple->num_clocks = 0; - reset_control_assert(simple->resets); + if (!simple->pulse_resets) + reset_control_assert(simple->resets); + reset_control_put(simple->resets); pm_runtime_put_sync(dev); -- cgit v1.2.1 From e8284db48f1f5fde93285479d18ae528ec27dce4 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 11 Feb 2018 22:15:17 +0100 Subject: usb: dwc3: of-simple: add support for the Amlogic Meson GXL and AXG SoCs Amlogic Meson GXL and AXG SoCs come with a (host-only) dwc3 USB controller. To use this controller a clock has to be enabled and a reset line has to be pulsed. Enabling the clock works identical to other SoCs. However, the reset line has to be pulsed (using reset_control_reset) instead of using a level reset (reset_control_{assert,deassert}). Signed-off-by: Martin Blumenstingl Tested-by: Yixun Lan Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-of-simple.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index b6d35413c00d..cb2ee96fd3e8 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -93,6 +93,12 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) platform_set_drvdata(pdev, simple); simple->dev = dev; + if (of_device_is_compatible(np, "amlogic,meson-axg-dwc3") || + of_device_is_compatible(np, "amlogic,meson-gxl-dwc3")) { + shared_resets = true; + simple->pulse_resets = true; + } + simple->resets = of_reset_control_array_get(np, shared_resets, true); if (IS_ERR(simple->resets)) { ret = PTR_ERR(simple->resets); @@ -207,6 +213,8 @@ static const struct of_device_id of_dwc3_simple_match[] = { { .compatible = "xlnx,zynqmp-dwc3" }, { .compatible = "cavium,octeon-7130-usb-uctl" }, { .compatible = "sprd,sc9860-dwc3" }, + { .compatible = "amlogic,meson-axg-dwc3" }, + { .compatible = "amlogic,meson-gxl-dwc3" }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, of_dwc3_simple_match); -- cgit v1.2.1 From 4cff75c7fe3dc86f374ec37e028750a62723dc2e Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 27 Feb 2018 13:29:11 +0200 Subject: usb: dwc3: core.h: add some register definitions Add OTG and GHWPARAMS6 register definitions Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 82 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 860d2bc184d1..0d4c698e125d 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -201,6 +201,15 @@ #define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) #define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) +/* Global Status Register */ +#define DWC3_GSTS_OTG_IP BIT(10) +#define DWC3_GSTS_BC_IP BIT(9) +#define DWC3_GSTS_ADP_IP BIT(8) +#define DWC3_GSTS_HOST_IP BIT(7) +#define DWC3_GSTS_DEVICE_IP BIT(6) +#define DWC3_GSTS_CSR_TIMEOUT BIT(5) +#define DWC3_GSTS_BUS_ERR_ADDR_VLD BIT(4) + /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST BIT(31) #define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS BIT(30) @@ -286,6 +295,11 @@ #define DWC3_MAX_HIBER_SCRATCHBUFS 15 /* Global HWPARAMS6 Register */ +#define DWC3_GHWPARAMS6_BCSUPPORT BIT(14) +#define DWC3_GHWPARAMS6_OTG3SUPPORT BIT(13) +#define DWC3_GHWPARAMS6_ADPSUPPORT BIT(12) +#define DWC3_GHWPARAMS6_HNPSUPPORT BIT(11) +#define DWC3_GHWPARAMS6_SRPSUPPORT BIT(10) #define DWC3_GHWPARAMS6_EN_FPGA BIT(7) /* Global HWPARAMS7 Register */ @@ -467,6 +481,74 @@ #define DWC3_DEV_IMOD_INTERVAL_SHIFT 0 #define DWC3_DEV_IMOD_INTERVAL_MASK (0xffff << 0) +/* OTG Configuration Register */ +#define DWC3_OCFG_DISPWRCUTTOFF BIT(5) +#define DWC3_OCFG_HIBDISMASK BIT(4) +#define DWC3_OCFG_SFTRSTMASK BIT(3) +#define DWC3_OCFG_OTGVERSION BIT(2) +#define DWC3_OCFG_HNPCAP BIT(1) +#define DWC3_OCFG_SRPCAP BIT(0) + +/* OTG CTL Register */ +#define DWC3_OCTL_OTG3GOERR BIT(7) +#define DWC3_OCTL_PERIMODE BIT(6) +#define DWC3_OCTL_PRTPWRCTL BIT(5) +#define DWC3_OCTL_HNPREQ BIT(4) +#define DWC3_OCTL_SESREQ BIT(3) +#define DWC3_OCTL_TERMSELIDPULSE BIT(2) +#define DWC3_OCTL_DEVSETHNPEN BIT(1) +#define DWC3_OCTL_HSTSETHNPEN BIT(0) + +/* OTG Event Register */ +#define DWC3_OEVT_DEVICEMODE BIT(31) +#define DWC3_OEVT_XHCIRUNSTPSET BIT(27) +#define DWC3_OEVT_DEVRUNSTPSET BIT(26) +#define DWC3_OEVT_HIBENTRY BIT(25) +#define DWC3_OEVT_CONIDSTSCHNG BIT(24) +#define DWC3_OEVT_HRRCONFNOTIF BIT(23) +#define DWC3_OEVT_HRRINITNOTIF BIT(22) +#define DWC3_OEVT_ADEVIDLE BIT(21) +#define DWC3_OEVT_ADEVBHOSTEND BIT(20) +#define DWC3_OEVT_ADEVHOST BIT(19) +#define DWC3_OEVT_ADEVHNPCHNG BIT(18) +#define DWC3_OEVT_ADEVSRPDET BIT(17) +#define DWC3_OEVT_ADEVSESSENDDET BIT(16) +#define DWC3_OEVT_BDEVBHOSTEND BIT(11) +#define DWC3_OEVT_BDEVHNPCHNG BIT(10) +#define DWC3_OEVT_BDEVSESSVLDDET BIT(9) +#define DWC3_OEVT_BDEVVBUSCHNG BIT(8) +#define DWC3_OEVT_BSESSVLD BIT(3) +#define DWC3_OEVT_HSTNEGSTS BIT(2) +#define DWC3_OEVT_SESREQSTS BIT(1) +#define DWC3_OEVT_ERROR BIT(0) + +/* OTG Event Enable Register */ +#define DWC3_OEVTEN_XHCIRUNSTPSETEN BIT(27) +#define DWC3_OEVTEN_DEVRUNSTPSETEN BIT(26) +#define DWC3_OEVTEN_HIBENTRYEN BIT(25) +#define DWC3_OEVTEN_CONIDSTSCHNGEN BIT(24) +#define DWC3_OEVTEN_HRRCONFNOTIFEN BIT(23) +#define DWC3_OEVTEN_HRRINITNOTIFEN BIT(22) +#define DWC3_OEVTEN_ADEVIDLEEN BIT(21) +#define DWC3_OEVTEN_ADEVBHOSTENDEN BIT(20) +#define DWC3_OEVTEN_ADEVHOSTEN BIT(19) +#define DWC3_OEVTEN_ADEVHNPCHNGEN BIT(18) +#define DWC3_OEVTEN_ADEVSRPDETEN BIT(17) +#define DWC3_OEVTEN_ADEVSESSENDDETEN BIT(16) +#define DWC3_OEVTEN_BDEVBHOSTENDEN BIT(11) +#define DWC3_OEVTEN_BDEVHNPCHNGEN BIT(10) +#define DWC3_OEVTEN_BDEVSESSVLDDETEN BIT(9) +#define DWC3_OEVTEN_BDEVVBUSCHNGEN BIT(8) + +/* OTG Status Register */ +#define DWC3_OSTS_DEVRUNSTP BIT(13) +#define DWC3_OSTS_XHCIRUNSTP BIT(12) +#define DWC3_OSTS_PERIPHERALSTATE BIT(4) +#define DWC3_OSTS_XHCIPRTPOWER BIT(3) +#define DWC3_OSTS_BSESVLD BIT(2) +#define DWC3_OSTS_VBUSVLD BIT(1) +#define DWC3_OSTS_CONIDSTS BIT(0) + /* Structures */ struct dwc3_trb; -- cgit v1.2.1 From daaecc6541d014dca073473ec8a4120c0babbeb4 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 27 Feb 2018 12:54:37 +0200 Subject: usb: dwc3: prevent setting PRTCAP to OTG from debugfs We don't support PRTCAP == OTG yet, so prevent user from setting it via debugfs. Fixes: 41ce1456e1db ("usb: dwc3: core: make dwc3_set_mode() work properly") Cc: # v4.12+ Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index f1d838a4acd6..b014c87a7319 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -119,6 +119,9 @@ static void __dwc3_set_mode(struct work_struct *work) if (dwc->dr_mode != USB_DR_MODE_OTG) return; + if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG) + return; + switch (dwc->current_dr_role) { case DWC3_GCTL_PRTCAP_HOST: dwc3_host_exit(dwc); -- cgit v1.2.1 From 3589cce2b92ba8a11372f2c707adc9eb623efa67 Mon Sep 17 00:00:00 2001 From: Jaejoong Kim Date: Tue, 27 Feb 2018 11:04:22 +0900 Subject: usb: gadget: udc: Use scnprintf() instead of snprintf() The show() method should use scnprintf() not snprintf() because snprintf() may returns a value that exceeds its second argument. Signed-off-by: Jaejoong Kim Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 4 ++-- drivers/usb/gadget/udc/dummy_hcd.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 1f8b19d9cf97..50988b21a21b 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1482,7 +1482,7 @@ ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ - return snprintf(buf, PAGE_SIZE, "%s\n", \ + return scnprintf(buf, PAGE_SIZE, "%s\n", \ usb_speed_string(udc->gadget->param)); \ } \ static DEVICE_ATTR_RO(name) @@ -1497,7 +1497,7 @@ ssize_t name##_show(struct device *dev, \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ struct usb_gadget *gadget = udc->gadget; \ \ - return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \ + return scnprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \ } \ static DEVICE_ATTR_RO(name) diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index e744d4b7bfed..baf72f95f0f1 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -2366,7 +2366,7 @@ static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb) { int ep = usb_pipeendpoint(urb->pipe); - return snprintf(buf, size, + return scnprintf(buf, size, "urb/%p %s ep%d%s%s len %d/%d\n", urb, ({ char *s; -- cgit v1.2.1 From 5864470a6e6bf2d4d67fb719b012f88ea48eb656 Mon Sep 17 00:00:00 2001 From: Mike Looijmans Date: Wed, 21 Feb 2018 16:04:01 +0100 Subject: usb: phy-generic: Use gpiod_set_value_cansleep The nop_reset and shutdown methods are called in a context that can sleep, so use gpiod_set_value_cansleep instead of gpiod_set_value. If you've connected the reset line to a GPIO expander, you'd get a kernel "slowpath" warning with gpiod_set_value. Signed-off-by: Mike Looijmans Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-generic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 74ba88297991..a53b89be5324 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -63,9 +63,9 @@ static void nop_reset(struct usb_phy_generic *nop) if (!nop->gpiod_reset) return; - gpiod_set_value(nop->gpiod_reset, 1); + gpiod_set_value_cansleep(nop->gpiod_reset, 1); usleep_range(10000, 20000); - gpiod_set_value(nop->gpiod_reset, 0); + gpiod_set_value_cansleep(nop->gpiod_reset, 0); } /* interface to regulator framework */ @@ -159,7 +159,7 @@ void usb_gen_phy_shutdown(struct usb_phy *phy) { struct usb_phy_generic *nop = dev_get_drvdata(phy->dev); - gpiod_set_value(nop->gpiod_reset, 1); + gpiod_set_value_cansleep(nop->gpiod_reset, 1); if (!IS_ERR(nop->clk)) clk_disable_unprepare(nop->clk); -- cgit v1.2.1 From 43bcf64e5cdc3da44363eb2be157c3c99b5d4e7c Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Sun, 17 Dec 2017 20:02:39 +0300 Subject: usb: phy: tegra: Increase PHY clock stabilization timeout This fixes "utmi_phy_clk_enable: timeout waiting for phy to stabilize" error message. Signed-off-by: Dmitry Osipenko Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-tegra-usb.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c index f668bfb708d3..0e8d23e51732 100644 --- a/drivers/usb/phy/phy-tegra-usb.c +++ b/drivers/usb/phy/phy-tegra-usb.c @@ -16,7 +16,7 @@ #include #include #include -#include +#include #include #include #include @@ -305,14 +305,10 @@ static int utmip_pad_power_off(struct tegra_usb_phy *phy) static int utmi_wait_register(void __iomem *reg, u32 mask, u32 result) { - unsigned long timeout = 2000; - do { - if ((readl(reg) & mask) == result) - return 0; - udelay(1); - timeout--; - } while (timeout); - return -1; + u32 tmp; + + return readl_poll_timeout(reg, tmp, (tmp & mask) == result, + 2000, 6000); } static void utmi_phy_clk_disable(struct tegra_usb_phy *phy) -- cgit v1.2.1 From f09cc79b4b338e3bb60370f5443f475d2248bcca Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 27 Feb 2018 13:30:19 +0200 Subject: usb: dwc3: add dual role support using OTG block This is useful on platforms (e.g. TI AM437x) that don't have ID available on a GPIO but do have the OTG block. We can obtain the ID state via the OTG block and use it for dual-role switching. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 67 ++++++- drivers/usb/dwc3/core.h | 29 +++ drivers/usb/dwc3/drd.c | 489 ++++++++++++++++++++++++++++++++++++++++++++++-- 3 files changed, 557 insertions(+), 28 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index b014c87a7319..e8890c0201a5 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -89,10 +89,7 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc) return 0; } -static void dwc3_event_buffers_cleanup(struct dwc3 *dwc); -static int dwc3_event_buffers_setup(struct dwc3 *dwc); - -static void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) +void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) { u32 reg; @@ -110,16 +107,19 @@ static void __dwc3_set_mode(struct work_struct *work) unsigned long flags; int ret; - if (!dwc->desired_dr_role) + if (dwc->dr_mode != USB_DR_MODE_OTG) return; - if (dwc->desired_dr_role == dwc->current_dr_role) + if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_OTG) + dwc3_otg_update(dwc, 0); + + if (!dwc->desired_dr_role) return; - if (dwc->dr_mode != USB_DR_MODE_OTG) + if (dwc->desired_dr_role == dwc->current_dr_role) return; - if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG) + if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG && dwc->edev) return; switch (dwc->current_dr_role) { @@ -130,6 +130,13 @@ static void __dwc3_set_mode(struct work_struct *work) dwc3_gadget_exit(dwc); dwc3_event_buffers_cleanup(dwc); break; + case DWC3_GCTL_PRTCAP_OTG: + dwc3_otg_exit(dwc); + spin_lock_irqsave(&dwc->lock, flags); + dwc->desired_otg_role = DWC3_OTG_ROLE_IDLE; + spin_unlock_irqrestore(&dwc->lock, flags); + dwc3_otg_update(dwc, 1); + break; default: break; } @@ -165,9 +172,14 @@ static void __dwc3_set_mode(struct work_struct *work) if (ret) dev_err(dwc->dev, "failed to initialize peripheral\n"); break; + case DWC3_GCTL_PRTCAP_OTG: + dwc3_otg_init(dwc); + dwc3_otg_update(dwc, 0); + break; default: break; } + } void dwc3_set_mode(struct dwc3 *dwc, u32 mode) @@ -351,7 +363,7 @@ static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) * * Returns 0 on success otherwise negative errno. */ -static int dwc3_event_buffers_setup(struct dwc3 *dwc) +int dwc3_event_buffers_setup(struct dwc3 *dwc) { struct dwc3_event_buffer *evt; @@ -368,7 +380,7 @@ static int dwc3_event_buffers_setup(struct dwc3 *dwc) return 0; } -static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) +void dwc3_event_buffers_cleanup(struct dwc3 *dwc) { struct dwc3_event_buffer *evt; @@ -1329,6 +1341,20 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) if (!PMSG_IS_AUTO(msg)) dwc3_core_exit(dwc); break; + case DWC3_GCTL_PRTCAP_OTG: + /* do nothing during runtime_suspend */ + if (PMSG_IS_AUTO(msg)) + break; + + if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { + spin_lock_irqsave(&dwc->lock, flags); + dwc3_gadget_suspend(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + } + + dwc3_otg_exit(dwc); + dwc3_core_exit(dwc); + break; default: /* do nothing */ break; @@ -1359,6 +1385,27 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) if (ret) return ret; } + break; + case DWC3_GCTL_PRTCAP_OTG: + /* nothing to do on runtime_resume */ + if (PMSG_IS_AUTO(msg)) + break; + + ret = dwc3_core_init(dwc); + if (ret) + return ret; + + dwc3_set_prtcap(dwc, dwc->current_dr_role); + + dwc3_otg_init(dwc); + if (dwc->current_otg_role == DWC3_OTG_ROLE_HOST) { + dwc3_otg_host_init(dwc); + } else if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { + spin_lock_irqsave(&dwc->lock, flags); + dwc3_gadget_resume(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + } + break; default: /* do nothing */ diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 0d4c698e125d..09243a680a0d 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -58,6 +58,11 @@ #define DWC3_DEVICE_EVENT_CMD_CMPL 10 #define DWC3_DEVICE_EVENT_OVERFLOW 11 +/* Controller's role while using the OTG block */ +#define DWC3_OTG_ROLE_IDLE 0 +#define DWC3_OTG_ROLE_HOST 1 +#define DWC3_OTG_ROLE_DEVICE 2 + #define DWC3_GEVNTCOUNT_MASK 0xfffc #define DWC3_GEVNTCOUNT_EHB BIT(31) #define DWC3_GSNPSID_MASK 0xffff0000 @@ -863,6 +868,10 @@ struct dwc3_scratchpad_array { * @regs_size: address space size * @fladj: frame length adjustment * @irq_gadget: peripheral controller's IRQ number + * @otg_irq: IRQ number for OTG IRQs + * @current_otg_role: current role of operation while using the OTG block + * @desired_otg_role: desired role of operation while using the OTG block + * @otg_restart_host: flag that OTG controller needs to restart host * @nr_scratch: number of scratch buffers * @u1u2: only used on revisions <1.83a for workaround * @maximum_speed: maximum speed requested (mainly for testing purposes) @@ -996,6 +1005,10 @@ struct dwc3 { u32 fladj; u32 irq_gadget; + u32 otg_irq; + u32 current_otg_role; + u32 desired_otg_role; + bool otg_restart_host; u32 nr_scratch; u32 u1u2; u32 maximum_speed; @@ -1257,6 +1270,7 @@ struct dwc3_gadget_ep_cmd_params { #define DWC3_HAS_OTG BIT(3) /* prototypes */ +void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode); void dwc3_set_mode(struct dwc3 *dwc, u32 mode); u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type); @@ -1274,6 +1288,9 @@ static inline bool dwc3_is_usb31(struct dwc3 *dwc) bool dwc3_has_imod(struct dwc3 *dwc); +int dwc3_event_buffers_setup(struct dwc3 *dwc); +void dwc3_event_buffers_cleanup(struct dwc3 *dwc); + #if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_host_init(struct dwc3 *dwc); void dwc3_host_exit(struct dwc3 *dwc); @@ -1317,11 +1334,23 @@ static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc, #if IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_drd_init(struct dwc3 *dwc); void dwc3_drd_exit(struct dwc3 *dwc); +void dwc3_otg_init(struct dwc3 *dwc); +void dwc3_otg_exit(struct dwc3 *dwc); +void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus); +void dwc3_otg_host_init(struct dwc3 *dwc); #else static inline int dwc3_drd_init(struct dwc3 *dwc) { return 0; } static inline void dwc3_drd_exit(struct dwc3 *dwc) { } +static inline void dwc3_otg_init(struct dwc3 *dwc) +{ } +static inline void dwc3_otg_exit(struct dwc3 *dwc) +{ } +static inline void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus) +{ } +static inline void dwc3_otg_host_init(struct dwc3 *dwc) +{ } #endif /* power management interface */ diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index cc8ab9a8e9d2..1d8c557e97e0 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -8,22 +8,423 @@ */ #include +#include #include "debug.h" #include "core.h" #include "gadget.h" -static void dwc3_drd_update(struct dwc3 *dwc) +static void dwc3_otg_disable_events(struct dwc3 *dwc, u32 disable_mask) +{ + u32 reg = dwc3_readl(dwc->regs, DWC3_OEVTEN); + + reg &= ~(disable_mask); + dwc3_writel(dwc->regs, DWC3_OEVTEN, reg); +} + +static void dwc3_otg_enable_events(struct dwc3 *dwc, u32 enable_mask) +{ + u32 reg = dwc3_readl(dwc->regs, DWC3_OEVTEN); + + reg |= (enable_mask); + dwc3_writel(dwc->regs, DWC3_OEVTEN, reg); +} + +static void dwc3_otg_clear_events(struct dwc3 *dwc) +{ + u32 reg = dwc3_readl(dwc->regs, DWC3_OEVT); + + dwc3_writel(dwc->regs, DWC3_OEVTEN, reg); +} + +#define DWC3_OTG_ALL_EVENTS (DWC3_OEVTEN_XHCIRUNSTPSETEN | \ + DWC3_OEVTEN_DEVRUNSTPSETEN | DWC3_OEVTEN_HIBENTRYEN | \ + DWC3_OEVTEN_CONIDSTSCHNGEN | DWC3_OEVTEN_HRRCONFNOTIFEN | \ + DWC3_OEVTEN_HRRINITNOTIFEN | DWC3_OEVTEN_ADEVIDLEEN | \ + DWC3_OEVTEN_ADEVBHOSTENDEN | DWC3_OEVTEN_ADEVHOSTEN | \ + DWC3_OEVTEN_ADEVHNPCHNGEN | DWC3_OEVTEN_ADEVSRPDETEN | \ + DWC3_OEVTEN_ADEVSESSENDDETEN | DWC3_OEVTEN_BDEVBHOSTENDEN | \ + DWC3_OEVTEN_BDEVHNPCHNGEN | DWC3_OEVTEN_BDEVSESSVLDDETEN | \ + DWC3_OEVTEN_BDEVVBUSCHNGEN) + +static irqreturn_t dwc3_otg_thread_irq(int irq, void *_dwc) { + struct dwc3 *dwc = _dwc; + + spin_lock(&dwc->lock); + if (dwc->otg_restart_host) { + dwc3_otg_host_init(dwc); + dwc->otg_restart_host = 0; + } + + spin_unlock(&dwc->lock); + + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); + + return IRQ_HANDLED; +} + +static irqreturn_t dwc3_otg_irq(int irq, void *_dwc) +{ + u32 reg; + struct dwc3 *dwc = _dwc; + irqreturn_t ret = IRQ_NONE; + + reg = dwc3_readl(dwc->regs, DWC3_OEVT); + if (reg) { + /* ignore non OTG events, we can't disable them in OEVTEN */ + if (!(reg & DWC3_OTG_ALL_EVENTS)) { + dwc3_writel(dwc->regs, DWC3_OEVT, reg); + return IRQ_NONE; + } + + if (dwc->current_otg_role == DWC3_OTG_ROLE_HOST && + !(reg & DWC3_OEVT_DEVICEMODE)) + dwc->otg_restart_host = 1; + dwc3_writel(dwc->regs, DWC3_OEVT, reg); + ret = IRQ_WAKE_THREAD; + } + + return ret; +} + +static void dwc3_otgregs_init(struct dwc3 *dwc) +{ + u32 reg; + + /* + * Prevent host/device reset from resetting OTG core. + * If we don't do this then xhci_reset (USBCMD.HCRST) will reset + * the signal outputs sent to the PHY, the OTG FSM logic of the + * core and also the resets to the VBUS filters inside the core. + */ + reg = dwc3_readl(dwc->regs, DWC3_OCFG); + reg |= DWC3_OCFG_SFTRSTMASK; + dwc3_writel(dwc->regs, DWC3_OCFG, reg); + + /* Disable hibernation for simplicity */ + reg = dwc3_readl(dwc->regs, DWC3_GCTL); + reg &= ~DWC3_GCTL_GBLHIBERNATIONEN; + dwc3_writel(dwc->regs, DWC3_GCTL, reg); + + /* + * Initialize OTG registers as per + * Figure 11-4 OTG Driver Overall Programming Flow + */ + /* OCFG.SRPCap = 0, OCFG.HNPCap = 0 */ + reg = dwc3_readl(dwc->regs, DWC3_OCFG); + reg &= ~(DWC3_OCFG_SRPCAP | DWC3_OCFG_HNPCAP); + dwc3_writel(dwc->regs, DWC3_OCFG, reg); + /* OEVT = FFFF */ + dwc3_otg_clear_events(dwc); + /* OEVTEN = 0 */ + dwc3_otg_disable_events(dwc, DWC3_OTG_ALL_EVENTS); + /* OEVTEN.ConIDStsChngEn = 1. Instead we enable all events */ + dwc3_otg_enable_events(dwc, DWC3_OTG_ALL_EVENTS); + /* + * OCTL.PeriMode = 1, OCTL.DevSetHNPEn = 0, OCTL.HstSetHNPEn = 0, + * OCTL.HNPReq = 0 + */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg |= DWC3_OCTL_PERIMODE; + reg &= ~(DWC3_OCTL_DEVSETHNPEN | DWC3_OCTL_HSTSETHNPEN | + DWC3_OCTL_HNPREQ); + dwc3_writel(dwc->regs, DWC3_OCTL, reg); +} + +static int dwc3_otg_get_irq(struct dwc3 *dwc) +{ + struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); + int irq; + + irq = platform_get_irq_byname(dwc3_pdev, "otg"); + if (irq > 0) + goto out; + + if (irq == -EPROBE_DEFER) + goto out; + + irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3"); + if (irq > 0) + goto out; + + if (irq == -EPROBE_DEFER) + goto out; + + irq = platform_get_irq(dwc3_pdev, 0); + if (irq > 0) + goto out; + + if (irq != -EPROBE_DEFER) + dev_err(dwc->dev, "missing OTG IRQ\n"); + + if (!irq) + irq = -EINVAL; + +out: + return irq; +} + +void dwc3_otg_init(struct dwc3 *dwc) +{ + u32 reg; + + /* + * As per Figure 11-4 OTG Driver Overall Programming Flow, + * block "Initialize GCTL for OTG operation". + */ + /* GCTL.PrtCapDir=2'b11 */ + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_OTG); + /* GUSB2PHYCFG0.SusPHY=0 */ + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); + reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + + /* Initialize OTG registers */ + dwc3_otgregs_init(dwc); +} + +void dwc3_otg_exit(struct dwc3 *dwc) +{ + /* disable all OTG IRQs */ + dwc3_otg_disable_events(dwc, DWC3_OTG_ALL_EVENTS); + /* clear all events */ + dwc3_otg_clear_events(dwc); +} + +/* should be called before Host controller driver is started */ +void dwc3_otg_host_init(struct dwc3 *dwc) +{ + u32 reg; + + /* As per Figure 11-10 A-Device Flow Diagram */ + /* OCFG.HNPCap = 0, OCFG.SRPCap = 0. Already 0 */ + + /* + * OCTL.PeriMode=0, OCTL.TermSelDLPulse = 0, + * OCTL.DevSetHNPEn = 0, OCTL.HstSetHNPEn = 0 + */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg &= ~(DWC3_OCTL_PERIMODE | DWC3_OCTL_TERMSELIDPULSE | + DWC3_OCTL_DEVSETHNPEN | DWC3_OCTL_HSTSETHNPEN); + dwc3_writel(dwc->regs, DWC3_OCTL, reg); + + /* + * OCFG.DisPrtPwrCutoff = 0/1 + */ + reg = dwc3_readl(dwc->regs, DWC3_OCFG); + reg &= ~DWC3_OCFG_DISPWRCUTTOFF; + dwc3_writel(dwc->regs, DWC3_OCFG, reg); + + /* + * OCFG.SRPCap = 1, OCFG.HNPCap = GHWPARAMS6.HNP_CAP + * We don't want SRP/HNP for simple dual-role so leave + * these disabled. + */ + + /* + * OEVTEN.OTGADevHostEvntEn = 1 + * OEVTEN.OTGADevSessEndDetEvntEn = 1 + * We don't want HNP/role-swap so leave these disabled. + */ + + /* GUSB2PHYCFG.ULPIAutoRes = 1/0, GUSB2PHYCFG.SusPHY = 1 */ + if (!dwc->dis_u2_susphy_quirk) { + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); + reg |= DWC3_GUSB2PHYCFG_SUSPHY; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + } + + /* Set Port Power to enable VBUS: OCTL.PrtPwrCtl = 1 */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg |= DWC3_OCTL_PRTPWRCTL; + dwc3_writel(dwc->regs, DWC3_OCTL, reg); +} + +/* should be called after Host controller driver is stopped */ +static void dwc3_otg_host_exit(struct dwc3 *dwc) +{ + u32 reg; + + /* + * Exit from A-device flow as per + * Figure 11-4 OTG Driver Overall Programming Flow + */ + + /* + * OEVTEN.OTGADevBHostEndEvntEn=0, OEVTEN.OTGADevHNPChngEvntEn=0 + * OEVTEN.OTGADevSessEndDetEvntEn=0, + * OEVTEN.OTGADevHostEvntEn = 0 + * But we don't disable any OTG events + */ + + /* OCTL.HstSetHNPEn = 0, OCTL.PrtPwrCtl=0 */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg &= ~(DWC3_OCTL_HSTSETHNPEN | DWC3_OCTL_PRTPWRCTL); + dwc3_writel(dwc->regs, DWC3_OCTL, reg); +} + +/* should be called before the gadget controller driver is started */ +static void dwc3_otg_device_init(struct dwc3 *dwc) +{ + u32 reg; + + /* As per Figure 11-20 B-Device Flow Diagram */ + + /* + * OCFG.HNPCap = GHWPARAMS6.HNP_CAP, OCFG.SRPCap = 1 + * but we keep them 0 for simple dual-role operation. + */ + reg = dwc3_readl(dwc->regs, DWC3_OCFG); + /* OCFG.OTGSftRstMsk = 0/1 */ + reg |= DWC3_OCFG_SFTRSTMASK; + dwc3_writel(dwc->regs, DWC3_OCFG, reg); + /* + * OCTL.PeriMode = 1 + * OCTL.TermSelDLPulse = 0/1, OCTL.HNPReq = 0 + * OCTL.DevSetHNPEn = 0, OCTL.HstSetHNPEn = 0 + */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg |= DWC3_OCTL_PERIMODE; + reg &= ~(DWC3_OCTL_TERMSELIDPULSE | DWC3_OCTL_HNPREQ | + DWC3_OCTL_DEVSETHNPEN | DWC3_OCTL_HSTSETHNPEN); + dwc3_writel(dwc->regs, DWC3_OCTL, reg); + /* OEVTEN.OTGBDevSesVldDetEvntEn = 1 */ + dwc3_otg_enable_events(dwc, DWC3_OEVTEN_BDEVSESSVLDDETEN); + /* GUSB2PHYCFG.ULPIAutoRes = 0, GUSB2PHYCFG0.SusPHY = 1 */ + if (!dwc->dis_u2_susphy_quirk) { + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); + reg |= DWC3_GUSB2PHYCFG_SUSPHY; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + } + /* GCTL.GblHibernationEn = 0. Already 0. */ +} + +/* should be called after the gadget controller driver is stopped */ +static void dwc3_otg_device_exit(struct dwc3 *dwc) +{ + u32 reg; + + /* + * Exit from B-device flow as per + * Figure 11-4 OTG Driver Overall Programming Flow + */ + + /* + * OEVTEN.OTGBDevHNPChngEvntEn = 0 + * OEVTEN.OTGBDevVBusChngEvntEn = 0 + * OEVTEN.OTGBDevBHostEndEvntEn = 0 + */ + dwc3_otg_disable_events(dwc, DWC3_OEVTEN_BDEVHNPCHNGEN | + DWC3_OEVTEN_BDEVVBUSCHNGEN | + DWC3_OEVTEN_BDEVBHOSTENDEN); + + /* OCTL.DevSetHNPEn = 0, OCTL.HNPReq = 0, OCTL.PeriMode=1 */ + reg = dwc3_readl(dwc->regs, DWC3_OCTL); + reg &= ~(DWC3_OCTL_DEVSETHNPEN | DWC3_OCTL_HNPREQ); + reg |= DWC3_OCTL_PERIMODE; + dwc3_writel(dwc->regs, DWC3_OCTL, reg); +} + +void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus) +{ + int ret; + u32 reg; int id; + unsigned long flags; - id = extcon_get_state(dwc->edev, EXTCON_USB_HOST); - if (id < 0) - id = 0; + if (dwc->dr_mode != USB_DR_MODE_OTG) + return; - dwc3_set_mode(dwc, id ? - DWC3_GCTL_PRTCAP_HOST : - DWC3_GCTL_PRTCAP_DEVICE); + /* don't do anything if debug user changed role to not OTG */ + if (dwc->current_dr_role != DWC3_GCTL_PRTCAP_OTG) + return; + + if (!ignore_idstatus) { + reg = dwc3_readl(dwc->regs, DWC3_OSTS); + id = !!(reg & DWC3_OSTS_CONIDSTS); + + dwc->desired_otg_role = id ? DWC3_OTG_ROLE_DEVICE : + DWC3_OTG_ROLE_HOST; + } + + if (dwc->desired_otg_role == dwc->current_otg_role) + return; + + switch (dwc->current_otg_role) { + case DWC3_OTG_ROLE_HOST: + dwc3_host_exit(dwc); + spin_lock_irqsave(&dwc->lock, flags); + dwc3_otg_host_exit(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + break; + case DWC3_OTG_ROLE_DEVICE: + dwc3_gadget_exit(dwc); + spin_lock_irqsave(&dwc->lock, flags); + dwc3_event_buffers_cleanup(dwc); + dwc3_otg_device_exit(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + break; + default: + break; + } + + spin_lock_irqsave(&dwc->lock, flags); + + dwc->current_otg_role = dwc->desired_otg_role; + + spin_unlock_irqrestore(&dwc->lock, flags); + + switch (dwc->desired_otg_role) { + case DWC3_OTG_ROLE_HOST: + spin_lock_irqsave(&dwc->lock, flags); + dwc3_otgregs_init(dwc); + dwc3_otg_host_init(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + ret = dwc3_host_init(dwc); + if (ret) { + dev_err(dwc->dev, "failed to initialize host\n"); + } else { + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, true); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, + PHY_MODE_USB_HOST); + } + break; + case DWC3_OTG_ROLE_DEVICE: + spin_lock_irqsave(&dwc->lock, flags); + dwc3_otgregs_init(dwc); + dwc3_otg_device_init(dwc); + dwc3_event_buffers_setup(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, false); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, + PHY_MODE_USB_DEVICE); + ret = dwc3_gadget_init(dwc); + if (ret) + dev_err(dwc->dev, "failed to initialize peripheral\n"); + break; + default: + break; + } +} + +static void dwc3_drd_update(struct dwc3 *dwc) +{ + int id; + + if (dwc->edev) { + id = extcon_get_state(dwc->edev, EXTCON_USB_HOST); + if (id < 0) + id = 0; + dwc3_set_mode(dwc, id ? + DWC3_GCTL_PRTCAP_HOST : + DWC3_GCTL_PRTCAP_DEVICE); + } } static int dwc3_drd_notifier(struct notifier_block *nb, @@ -40,11 +441,11 @@ static int dwc3_drd_notifier(struct notifier_block *nb, int dwc3_drd_init(struct dwc3 *dwc) { - int ret; + int ret, irq; - if (dwc->dev->of_node) { - if (of_property_read_bool(dwc->dev->of_node, "extcon")) - dwc->edev = extcon_get_edev_by_phandle(dwc->dev, 0); + if (dwc->dev->of_node && + of_property_read_bool(dwc->dev->of_node, "extcon")) { + dwc->edev = extcon_get_edev_by_phandle(dwc->dev, 0); if (IS_ERR(dwc->edev)) return PTR_ERR(dwc->edev); @@ -56,19 +457,71 @@ int dwc3_drd_init(struct dwc3 *dwc) dev_err(dwc->dev, "couldn't register cable notifier\n"); return ret; } - } - dwc3_drd_update(dwc); + dwc3_drd_update(dwc); + } else { + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_OTG); + dwc->current_dr_role = DWC3_GCTL_PRTCAP_OTG; + + /* use OTG block to get ID event */ + irq = dwc3_otg_get_irq(dwc); + if (irq < 0) + return irq; + + dwc->otg_irq = irq; + + /* disable all OTG IRQs */ + dwc3_otg_disable_events(dwc, DWC3_OTG_ALL_EVENTS); + /* clear all events */ + dwc3_otg_clear_events(dwc); + + ret = request_threaded_irq(dwc->otg_irq, dwc3_otg_irq, + dwc3_otg_thread_irq, + IRQF_SHARED, "dwc3-otg", dwc); + if (ret) { + dev_err(dwc->dev, "failed to request irq #%d --> %d\n", + dwc->otg_irq, ret); + ret = -ENODEV; + return ret; + } + + dwc3_otg_init(dwc); + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); + } return 0; } void dwc3_drd_exit(struct dwc3 *dwc) { - extcon_unregister_notifier(dwc->edev, EXTCON_USB_HOST, - &dwc->edev_nb); + unsigned long flags; + + if (dwc->edev) + extcon_unregister_notifier(dwc->edev, EXTCON_USB_HOST, + &dwc->edev_nb); + + cancel_work_sync(&dwc->drd_work); + + /* debug user might have changed role, clean based on current role */ + switch (dwc->current_dr_role) { + case DWC3_GCTL_PRTCAP_HOST: + dwc3_host_exit(dwc); + break; + case DWC3_GCTL_PRTCAP_DEVICE: + dwc3_gadget_exit(dwc); + dwc3_event_buffers_cleanup(dwc); + break; + case DWC3_GCTL_PRTCAP_OTG: + dwc3_otg_exit(dwc); + spin_lock_irqsave(&dwc->lock, flags); + dwc->desired_otg_role = DWC3_OTG_ROLE_IDLE; + spin_unlock_irqrestore(&dwc->lock, flags); + dwc3_otg_update(dwc, 1); + break; + default: + break; + } - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); - flush_work(&dwc->drd_work); - dwc3_gadget_exit(dwc); + if (!dwc->edev) + free_irq(dwc->otg_irq, dwc); } -- cgit v1.2.1 From 7455f8b7f0b3f3409f50e52ae6fd23fbd1a611dd Mon Sep 17 00:00:00 2001 From: John Youn Date: Wed, 24 Jan 2018 17:44:51 +0400 Subject: usb: dwc2: Enable LPM Set 'lpm_capable' flag in the gadget structure so indicating that LPM is supported. Signed-off-by: John Youn Signed-off-by: Sevak Arakelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 5d91ff948972..adf162cb9998 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4624,6 +4624,10 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg) hsotg->gadget.max_speed = USB_SPEED_HIGH; hsotg->gadget.ops = &dwc2_hsotg_gadget_ops; hsotg->gadget.name = dev_name(dev); + + if (hsotg->params.lpm) + hsotg->gadget.lpm_capable = true; + if (hsotg->dr_mode == USB_DR_MODE_OTG) hsotg->gadget.is_otg = 1; else if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) -- cgit v1.2.1 From 41ba9b9b95beb8bb101a40c6badbbe49da6af9cd Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:06:36 +0400 Subject: usb: dwc2: Rename hibernation to partial_power_down No-op change, only rename. This code was misnamed originally. It was only responsible for partial power down and not for hibernation. Rename core_params->hibernation to core_params->power_down, dwc2_set_param_hibernation() to dwc2_set_param_power_down(). Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 14 +++++++------- drivers/usb/dwc2/core.h | 12 ++++++------ drivers/usb/dwc2/core_intr.c | 14 +++++++------- drivers/usb/dwc2/debugfs.c | 2 +- drivers/usb/dwc2/gadget.c | 6 +++--- drivers/usb/dwc2/hcd.c | 26 +++++++++++++------------- drivers/usb/dwc2/params.c | 2 +- 7 files changed, 38 insertions(+), 38 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 346150922dbd..34d22d13c1dc 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -128,17 +128,17 @@ static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) } /** - * dwc2_exit_hibernation() - Exit controller from Partial Power Down. + * dwc2_exit_partial_power_down() - Exit controller from Partial Power Down. * * @hsotg: Programming view of the DWC_otg controller * @restore: Controller registers need to be restored */ -int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, bool restore) +int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore) { u32 pcgcctl; int ret = 0; - if (!hsotg->params.hibernation) + if (!hsotg->params.power_down) return -ENOTSUPP; pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); @@ -182,16 +182,16 @@ int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, bool restore) } /** - * dwc2_enter_hibernation() - Put controller in Partial Power Down. + * dwc2_enter_partial_power_down() - Put controller in Partial Power Down. * * @hsotg: Programming view of the DWC_otg controller */ -int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg) +int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg) { u32 pcgcctl; int ret = 0; - if (!hsotg->params.hibernation) + if (!hsotg->params.power_down) return -ENOTSUPP; /* Backup all registers */ @@ -220,7 +220,7 @@ int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg) /* * Clear any pending interrupts since dwc2 will not be able to - * clear them after entering hibernation. + * clear them after entering partial_power_down. */ dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 96799a399393..eaf055e6ce9b 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -421,9 +421,9 @@ enum dwc2_ep0_state { * case. * 0 - No (default) * 1 - Yes - * @hibernation: Specifies whether the controller support hibernation. - * If hibernation is enabled, the controller will enter - * hibernation in both peripheral and host mode when + * @power_down: Specifies whether the controller support power_down. + * If power_down is enabled, the controller will enter + * power_down in both peripheral and host mode when * needed. * 0 - No (default) * 1 - Yes @@ -498,7 +498,7 @@ struct dwc2_core_params { bool reload_ctl; bool uframe_sched; bool external_id_pin_ctl; - bool hibernation; + bool power_down; bool lpm; bool lpm_clock_gating; bool besl; @@ -1117,8 +1117,8 @@ static inline bool dwc2_is_hs_iot(struct dwc2_hsotg *hsotg) */ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait); int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg); -int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg); -int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, bool restore); +int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg); +int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore); bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host); void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg); diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 46b32ec7d343..41d7dda40cb1 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -321,10 +321,10 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) if (dwc2_is_device_mode(hsotg)) { if (hsotg->lx_state == DWC2_L2) { - ret = dwc2_exit_hibernation(hsotg, true); + ret = dwc2_exit_partial_power_down(hsotg, true); if (ret && (ret != -ENOTSUPP)) dev_err(hsotg->dev, - "exit hibernation failed\n"); + "exit power_down failed\n"); } /* @@ -417,16 +417,16 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) /* Clear Remote Wakeup Signaling */ dctl &= ~DCTL_RMTWKUPSIG; dwc2_writel(dctl, hsotg->regs + DCTL); - ret = dwc2_exit_hibernation(hsotg, true); + ret = dwc2_exit_partial_power_down(hsotg, true); if (ret && (ret != -ENOTSUPP)) - dev_err(hsotg->dev, "exit hibernation failed\n"); + dev_err(hsotg->dev, "exit power_down failed\n"); call_gadget(hsotg, resume); } /* Change to L0 state */ hsotg->lx_state = DWC2_L0; } else { - if (hsotg->params.hibernation) + if (hsotg->params.power_down) return; if (hsotg->lx_state != DWC2_L1) { @@ -497,11 +497,11 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg) return; } - ret = dwc2_enter_hibernation(hsotg); + ret = dwc2_enter_partial_power_down(hsotg); if (ret) { if (ret != -ENOTSUPP) dev_err(hsotg->dev, - "enter hibernation failed\n"); + "enter power_down failed\n"); goto skip_power_saving; } diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index c475ac5eb213..58c691f882a8 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -718,7 +718,7 @@ static int params_show(struct seq_file *seq, void *v) print_param_hex(seq, p, ahbcfg); print_param(seq, p, uframe_sched); print_param(seq, p, external_id_pin_ctl); - print_param(seq, p, hibernation); + print_param(seq, p, power_down); print_param(seq, p, lpm); print_param(seq, p, lpm_clock_gating); print_param(seq, p, besl); diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index adf162cb9998..a43478d65b3f 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3527,7 +3527,7 @@ irq_retry: /* This event must be used only if controller is suspended */ if (hsotg->lx_state == DWC2_L2) { - dwc2_exit_hibernation(hsotg, true); + dwc2_exit_partial_power_down(hsotg, true); hsotg->lx_state = DWC2_L0; } } @@ -4374,11 +4374,11 @@ static int dwc2_hsotg_vbus_session(struct usb_gadget *gadget, int is_active) spin_lock_irqsave(&hsotg->lock, flags); /* - * If controller is hibernated, it must exit from hibernation + * If controller is hibernated, it must exit from power_down * before being initialized / de-initialized */ if (hsotg->lx_state == DWC2_L2) - dwc2_exit_hibernation(hsotg, false); + dwc2_exit_partial_power_down(hsotg, false); if (is_active) { hsotg->op_state = OTG_STATE_B_PERIPHERAL; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index bbd3185a7364..280b3d5f0ca7 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3397,10 +3397,10 @@ static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) hsotg->bus_suspended = true; /* - * If hibernation is supported, Phy clock will be suspended + * If power_down is supported, Phy clock will be suspended * after registers are backuped. */ - if (!hsotg->params.hibernation) { + if (!hsotg->params.power_down) { /* Suspend the Phy Clock */ pcgctl = dwc2_readl(hsotg->regs + PCGCTL); pcgctl |= PCGCTL_STOPPCLK; @@ -3432,10 +3432,10 @@ static void dwc2_port_resume(struct dwc2_hsotg *hsotg) spin_lock_irqsave(&hsotg->lock, flags); /* - * If hibernation is supported, Phy clock is already resumed + * If power_down is supported, Phy clock is already resumed * after registers restore. */ - if (!hsotg->params.hibernation) { + if (!hsotg->params.power_down) { pcgctl = dwc2_readl(hsotg->regs + PCGCTL); pcgctl &= ~PCGCTL_STOPPCLK; dwc2_writel(pcgctl, hsotg->regs + PCGCTL); @@ -4364,7 +4364,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) if (hsotg->op_state == OTG_STATE_B_PERIPHERAL) goto unlock; - if (!hsotg->params.hibernation) + if (!hsotg->params.power_down) goto skip_power_saving; /* @@ -4378,12 +4378,12 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) dwc2_writel(hprt0, hsotg->regs + HPRT0); } - /* Enter hibernation */ - ret = dwc2_enter_hibernation(hsotg); + /* Enter partial_power_down */ + ret = dwc2_enter_partial_power_down(hsotg); if (ret) { if (ret != -ENOTSUPP) dev_err(hsotg->dev, - "enter hibernation failed\n"); + "enter partial_power_down failed\n"); goto skip_power_saving; } @@ -4394,7 +4394,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) spin_lock_irqsave(&hsotg->lock, flags); } - /* After entering hibernation, hardware is no more accessible */ + /* After entering partial_power_down, hardware is no more accessible */ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); skip_power_saving: @@ -4419,7 +4419,7 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) if (hsotg->lx_state != DWC2_L2) goto unlock; - if (!hsotg->params.hibernation) { + if (!hsotg->params.power_down) { hsotg->lx_state = DWC2_L0; goto unlock; } @@ -4441,10 +4441,10 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) spin_lock_irqsave(&hsotg->lock, flags); } - /* Exit hibernation */ - ret = dwc2_exit_hibernation(hsotg, true); + /* Exit partial_power_down */ + ret = dwc2_exit_partial_power_down(hsotg, true); if (ret && (ret != -ENOTSUPP)) - dev_err(hsotg->dev, "exit hibernation failed\n"); + dev_err(hsotg->dev, "exit partial_power_down failed\n"); hsotg->lx_state = DWC2_L0; diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 827f7f81a27c..c64b1ad50712 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -278,7 +278,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a); p->uframe_sched = true; p->external_id_pin_ctl = false; - p->hibernation = false; + p->power_down = false; p->lpm = true; p->lpm_clock_gating = true; p->besl = true; -- cgit v1.2.1 From 631a23108c1a90b726ca99f1f90d48a91737f43d Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:07:05 +0400 Subject: usb: dwc2: Add hibernation field into dwc2_hw_params Add parameter and it's initialization, needed for hibernation. Reimplement dwc2_set_param_power_down() to support hibernation too. Now 'power_down' parameter can be initialized with 0, 1 or 2. 0 - No 1 - Partial power down 2 - Hibernation Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 2 +- drivers/usb/dwc2/core.h | 12 ++++++++++-- drivers/usb/dwc2/hcd.c | 4 ++-- drivers/usb/dwc2/params.c | 34 ++++++++++++++++++++++++++++++++++ 4 files changed, 47 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 34d22d13c1dc..915fe6752b8d 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -138,7 +138,7 @@ int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore) u32 pcgcctl; int ret = 0; - if (!hsotg->params.power_down) + if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) return -ENOTSUPP; pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index eaf055e6ce9b..386a03056763 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -426,7 +426,8 @@ enum dwc2_ep0_state { * power_down in both peripheral and host mode when * needed. * 0 - No (default) - * 1 - Yes + * 1 - Partial power down + * 2 - Hibernation * @lpm: Enable LPM support. * 0 - No * 1 - Yes @@ -498,7 +499,12 @@ struct dwc2_core_params { bool reload_ctl; bool uframe_sched; bool external_id_pin_ctl; - bool power_down; + + int power_down; +#define DWC2_POWER_DOWN_PARAM_NONE 0 +#define DWC2_POWER_DOWN_PARAM_PARTIAL 1 +#define DWC2_POWER_DOWN_PARAM_HIBERNATION 2 + bool lpm; bool lpm_clock_gating; bool besl; @@ -579,6 +585,7 @@ struct dwc2_core_params { * 2 - FS pins shared with UTMI+ pins * 3 - FS pins shared with ULPI pins * @total_fifo_size: Total internal RAM for FIFOs (bytes) + * @hibernation Is hibernation enabled? * @utmi_phy_data_width UTMI+ PHY data width * 0 - 8 bits * 1 - 16 bits @@ -612,6 +619,7 @@ struct dwc2_hw_params { unsigned num_dev_perio_in_ep:4; unsigned total_fifo_size:16; unsigned power_optimized:1; + unsigned hibernation:1; unsigned utmi_phy_data_width:2; unsigned lpm_mode:1; u32 snpsid; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 280b3d5f0ca7..ee4654b64c7f 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4364,7 +4364,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) if (hsotg->op_state == OTG_STATE_B_PERIPHERAL) goto unlock; - if (!hsotg->params.power_down) + if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) goto skip_power_saving; /* @@ -4419,7 +4419,7 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) if (hsotg->lx_state != DWC2_L2) goto unlock; - if (!hsotg->params.power_down) { + if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) { hsotg->lx_state = DWC2_L0; goto unlock; } diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index c64b1ad50712..daf0f9ac7149 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -469,6 +469,38 @@ static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg) dwc2_set_param_phy_utmi_width(hsotg); } +static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg) +{ + int param = hsotg->params.power_down; + + switch (param) { + case DWC2_POWER_DOWN_PARAM_NONE: + break; + case DWC2_POWER_DOWN_PARAM_PARTIAL: + if (hsotg->hw_params.power_optimized) + break; + dev_dbg(hsotg->dev, + "Partial power down isn't supported by HW\n"); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + case DWC2_POWER_DOWN_PARAM_HIBERNATION: + if (hsotg->hw_params.hibernation) + break; + dev_dbg(hsotg->dev, + "Hibernation isn't supported by HW\n"); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + default: + dev_err(hsotg->dev, + "%s: Invalid parameter power_down=%d\n", + __func__, param); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + } + + hsotg->params.power_down = param; +} + static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg) { int fifo_count; @@ -529,6 +561,7 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg) dwc2_check_param_phy_type(hsotg); dwc2_check_param_speed(hsotg); dwc2_check_param_phy_utmi_width(hsotg); + dwc2_check_param_power_down(hsotg); CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo); CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo); CHECK_BOOL(i2c_enable, hw->i2c_enable); @@ -729,6 +762,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) GHWCFG4_NUM_IN_EPS_SHIFT; hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA); hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ); + hw->hibernation = !!(hwcfg4 & GHWCFG4_HIBER); hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >> GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT; hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED); -- cgit v1.2.1 From af7c2bd37867f51e8e3975b98a0d4ee8802d5110 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:07:33 +0400 Subject: usb: dwc2: gadget: Moved dtxfsiz backup array place Moved dtxfsiz from dwc2_gregs_backup to dwc2_dregs_backup, because it is device register. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 8 ++------ drivers/usb/dwc2/core.h | 4 ++-- drivers/usb/dwc2/gadget.c | 2 ++ 3 files changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 915fe6752b8d..84990a82363b 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -67,7 +67,8 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) { struct dwc2_gregs_backup *gr; - int i; + + dev_dbg(hsotg->dev, "%s\n", __func__); /* Backup global regs */ gr = &hsotg->gr_backup; @@ -81,8 +82,6 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) gr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); gr->gdfifocfg = dwc2_readl(hsotg->regs + GDFIFOCFG); gr->pcgcctl1 = dwc2_readl(hsotg->regs + PCGCCTL1); - for (i = 0; i < MAX_EPS_CHANNELS; i++) - gr->dtxfsiz[i] = dwc2_readl(hsotg->regs + DPTXFSIZN(i)); gr->valid = true; return 0; @@ -98,7 +97,6 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) { struct dwc2_gregs_backup *gr; - int i; dev_dbg(hsotg->dev, "%s\n", __func__); @@ -121,8 +119,6 @@ static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) dwc2_writel(gr->hptxfsiz, hsotg->regs + HPTXFSIZ); dwc2_writel(gr->gdfifocfg, hsotg->regs + GDFIFOCFG); dwc2_writel(gr->pcgcctl1, hsotg->regs + PCGCCTL1); - for (i = 0; i < MAX_EPS_CHANNELS; i++) - dwc2_writel(gr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i)); return 0; } diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 386a03056763..aa69f2838fcd 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -642,7 +642,6 @@ struct dwc2_hw_params { * @gi2cctl: Backup of GI2CCTL register * @hptxfsiz: Backup of HPTXFSIZ register * @gdfifocfg: Backup of GDFIFOCFG register - * @dtxfsiz: Backup of DTXFSIZ registers for each endpoint * @gpwrdn: Backup of GPWRDN register */ struct dwc2_gregs_backup { @@ -657,7 +656,6 @@ struct dwc2_gregs_backup { u32 pcgcctl; u32 pcgcctl1; u32 gdfifocfg; - u32 dtxfsiz[MAX_EPS_CHANNELS]; u32 gpwrdn; bool valid; }; @@ -676,6 +674,7 @@ struct dwc2_gregs_backup { * @doepctl: Backup of DOEPCTL register * @doeptsiz: Backup of DOEPTSIZ register * @doepdma: Backup of DOEPDMA register + * @dtxfsiz: Backup of DTXFSIZ registers for each endpoint */ struct dwc2_dregs_backup { u32 dcfg; @@ -689,6 +688,7 @@ struct dwc2_dregs_backup { u32 doepctl[MAX_EPS_CHANNELS]; u32 doeptsiz[MAX_EPS_CHANNELS]; u32 doepdma[MAX_EPS_CHANNELS]; + u32 dtxfsiz[MAX_EPS_CHANNELS]; bool valid; }; diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index a43478d65b3f..89c6714241ee 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4815,6 +4815,7 @@ int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg) dr->doeptsiz[i] = dwc2_readl(hsotg->regs + DOEPTSIZ(i)); dr->doepdma[i] = dwc2_readl(hsotg->regs + DOEPDMA(i)); + dr->dtxfsiz[i] = dwc2_readl(hsotg->regs + DPTXFSIZN(i)); } dr->valid = true; return 0; @@ -4855,6 +4856,7 @@ int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) dwc2_writel(dr->diepctl[i], hsotg->regs + DIEPCTL(i)); dwc2_writel(dr->dieptsiz[i], hsotg->regs + DIEPTSIZ(i)); dwc2_writel(dr->diepdma[i], hsotg->regs + DIEPDMA(i)); + dwc2_writel(dr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i)); /* Restore OUT EPs */ dwc2_writel(dr->doepctl[i], hsotg->regs + DOEPCTL(i)); -- cgit v1.2.1 From 9a5d2816b8560320ac625e8ae6cfc0d36ea0f52b Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:08:00 +0400 Subject: usb: dwc2: gadget: Fix dwc2_restore_device_registers Add parameter remote_wakeup to dwc2_restore_device_registers() to be able to restore device registers according to programming guide for dwc-otg. It says that in case of rem_wakeup DCTL must not be restored here. Remove setting of DCTL_PWRONPRGDONE from this function, because it will be done in function responsible for exiting from hibernation. WA for enabled EPx's IN and OUT in DDMA mode. On entering to hibernation wrong value read and saved from DIEPDMAx, as result BNA interrupt asserted on hibernation exit by restoring from saved area. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 2 +- drivers/usb/dwc2/core.h | 5 +++-- drivers/usb/dwc2/gadget.c | 38 ++++++++++++++++++++++++++------------ 3 files changed, 30 insertions(+), 15 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 84990a82363b..bb17a4577902 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -165,7 +165,7 @@ int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore) return ret; } } else { - ret = dwc2_restore_device_registers(hsotg); + ret = dwc2_restore_device_registers(hsotg, 0); if (ret) { dev_err(hsotg->dev, "%s: failed to restore device registers\n", __func__); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index aa69f2838fcd..85e083f021dc 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1213,7 +1213,7 @@ void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2); int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode); #define dwc2_is_device_connected(hsotg) (hsotg->connected) int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg); -int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg); +int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, int remote_wakeup); int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg); @@ -1237,7 +1237,8 @@ static inline int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, #define dwc2_is_device_connected(hsotg) (0) static inline int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg) { return 0; } -static inline int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) +static inline int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, + int remote_wakeup) { return 0; } static inline int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg) { return 0; } diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 89c6714241ee..379d6e1baaaa 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4827,11 +4827,13 @@ int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg) * if controller power were disabled. * * @hsotg: Programming view of the DWC_otg controller + * @remote_wakeup: Indicates whether resume is initiated by Device or Host. + * + * Return: 0 if successful, negative error code otherwise */ -int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) +int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, int remote_wakeup) { struct dwc2_dregs_backup *dr; - u32 dctl; int i; dev_dbg(hsotg->dev, "%s\n", __func__); @@ -4845,30 +4847,42 @@ int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg) } dr->valid = false; - dwc2_writel(dr->dcfg, hsotg->regs + DCFG); - dwc2_writel(dr->dctl, hsotg->regs + DCTL); + if (!remote_wakeup) + dwc2_writel(dr->dctl, hsotg->regs + DCTL); + dwc2_writel(dr->daintmsk, hsotg->regs + DAINTMSK); dwc2_writel(dr->diepmsk, hsotg->regs + DIEPMSK); dwc2_writel(dr->doepmsk, hsotg->regs + DOEPMSK); for (i = 0; i < hsotg->num_of_eps; i++) { /* Restore IN EPs */ - dwc2_writel(dr->diepctl[i], hsotg->regs + DIEPCTL(i)); dwc2_writel(dr->dieptsiz[i], hsotg->regs + DIEPTSIZ(i)); dwc2_writel(dr->diepdma[i], hsotg->regs + DIEPDMA(i)); + dwc2_writel(dr->doeptsiz[i], hsotg->regs + DOEPTSIZ(i)); + /** WA for enabled EPx's IN in DDMA mode. On entering to + * hibernation wrong value read and saved from DIEPDMAx, + * as result BNA interrupt asserted on hibernation exit + * by restoring from saved area. + */ + if (hsotg->params.g_dma_desc && + (dr->diepctl[i] & DXEPCTL_EPENA)) + dr->diepdma[i] = hsotg->eps_in[i]->desc_list_dma; dwc2_writel(dr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i)); - + dwc2_writel(dr->diepctl[i], hsotg->regs + DIEPCTL(i)); /* Restore OUT EPs */ - dwc2_writel(dr->doepctl[i], hsotg->regs + DOEPCTL(i)); dwc2_writel(dr->doeptsiz[i], hsotg->regs + DOEPTSIZ(i)); + /* WA for enabled EPx's OUT in DDMA mode. On entering to + * hibernation wrong value read and saved from DOEPDMAx, + * as result BNA interrupt asserted on hibernation exit + * by restoring from saved area. + */ + if (hsotg->params.g_dma_desc && + (dr->doepctl[i] & DXEPCTL_EPENA)) + dr->doepdma[i] = hsotg->eps_out[i]->desc_list_dma; dwc2_writel(dr->doepdma[i], hsotg->regs + DOEPDMA(i)); + dwc2_writel(dr->doepctl[i], hsotg->regs + DOEPCTL(i)); } - /* Set the Power-On Programming done bit */ - dctl = dwc2_readl(hsotg->regs + DCTL); - dctl |= DCTL_PWRONPRGDONE; - dwc2_writel(dctl, hsotg->regs + DCTL); - return 0; } -- cgit v1.2.1 From 20fe440982e72dc6440297d7111d71ac2cda70dd Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:08:27 +0400 Subject: usb: dwc2: core: Add hibernated flag Added a flag to indicate that core is in hibernation, it is used to determine the hibernation state of the core. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 2 ++ drivers/usb/dwc2/platform.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 85e083f021dc..31b1be0df02b 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -810,6 +810,7 @@ struct dwc2_hregs_backup { * @hcd_enabled Host mode sub-driver initialization indicator. * @gadget_enabled Peripheral mode sub-driver initialization indicator. * @ll_hw_enabled Status of low-level hardware resources. + * @hibernated: True if core is hibernated * @phy: The otg phy transceiver structure for phy control. * @uphy: The otg phy transceiver structure for old USB phy * control. @@ -947,6 +948,7 @@ struct dwc2_hsotg { unsigned int hcd_enabled:1; unsigned int gadget_enabled:1; unsigned int ll_hw_enabled:1; + unsigned int hibernated:1; struct phy *phy; struct usb_phy *uphy; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 65e1af5e491a..7d80e6360a5a 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -458,6 +458,7 @@ static int dwc2_driver_probe(struct platform_device *dev) } platform_set_drvdata(dev, hsotg); + hsotg->hibernated = 0; dwc2_debugfs_init(hsotg); -- cgit v1.2.1 From fa389a6d77264ae1b1263dc83c63503593e21ca9 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:08:53 +0400 Subject: usb: dwc2: gadget: Add remote_wakeup_allowed flag It will be set once corresponding set_feature command comes. True if device is allowed to wake-up host by remote-wakeup signalling. This is preparation for remote wake-up support implementation, it will not be implemented until gadget stack provide interface for bringing remote wake-up signalling. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 3 +++ drivers/usb/dwc2/gadget.c | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 31b1be0df02b..3c9dcf3b1b7d 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -928,6 +928,8 @@ struct dwc2_hregs_backup { * @ctrl_req: Request for EP0 control packets. * @ep0_state: EP0 control transfers state * @test_mode: USB test mode requested by the host + * @remote_wakeup_allowed: True if device is allowed to wake-up host by + * remote-wakeup signalling * @setup_desc_dma: EP0 setup stage desc chain DMA address * @setup_desc: EP0 setup stage desc chain pointer * @ctrl_in_desc_dma: EP0 IN data phase desc chain DMA address @@ -1082,6 +1084,7 @@ struct dwc2_hsotg { struct usb_gadget gadget; unsigned int enabled:1; unsigned int connected:1; + unsigned int remote_wakeup_allowed:1; struct dwc2_hsotg_ep *eps_in[MAX_EPS_CHANNELS]; struct dwc2_hsotg_ep *eps_out[MAX_EPS_CHANNELS]; #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */ diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 379d6e1baaaa..838e0929db59 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1640,6 +1640,10 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg, switch (recip) { case USB_RECIP_DEVICE: switch (wValue) { + case USB_DEVICE_REMOTE_WAKEUP: + hsotg->remote_wakeup_allowed = 1; + break; + case USB_DEVICE_TEST_MODE: if ((wIndex & 0xff) != 0) return -EINVAL; @@ -4624,6 +4628,7 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg) hsotg->gadget.max_speed = USB_SPEED_HIGH; hsotg->gadget.ops = &dwc2_hsotg_gadget_ops; hsotg->gadget.name = dev_name(dev); + hsotg->remote_wakeup_allowed = 0; if (hsotg->params.lpm) hsotg->gadget.lpm_capable = true; -- cgit v1.2.1 From 66a360962952822764c57240d5787d68e2b41c13 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:09:19 +0400 Subject: usb: dwc2: Changes in registers backup/restore functions Move hptxfsiz to host register's backup/restore functions, not needed to have it in global register's backup/restore functions. Add backup for glpmcfg, and read/write for gi2cctl and pcgcctl. As requires programming guide. Affected functions: dwc2_backup_host_registers() dwc2_restore_host_registers() dwc2_backup_global_registers() dwc2_restore_global_registers() Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 8 ++++++-- drivers/usb/dwc2/core.h | 6 ++++-- drivers/usb/dwc2/hcd.c | 2 ++ 3 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index bb17a4577902..69c19706334d 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -79,9 +79,11 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) gr->gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); gr->grxfsiz = dwc2_readl(hsotg->regs + GRXFSIZ); gr->gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); - gr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); gr->gdfifocfg = dwc2_readl(hsotg->regs + GDFIFOCFG); gr->pcgcctl1 = dwc2_readl(hsotg->regs + PCGCCTL1); + gr->glpmcfg = dwc2_readl(hsotg->regs + GLPMCFG); + gr->gi2cctl = dwc2_readl(hsotg->regs + GI2CCTL); + gr->pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); gr->valid = true; return 0; @@ -116,9 +118,11 @@ static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) dwc2_writel(gr->gahbcfg, hsotg->regs + GAHBCFG); dwc2_writel(gr->grxfsiz, hsotg->regs + GRXFSIZ); dwc2_writel(gr->gnptxfsiz, hsotg->regs + GNPTXFSIZ); - dwc2_writel(gr->hptxfsiz, hsotg->regs + HPTXFSIZ); dwc2_writel(gr->gdfifocfg, hsotg->regs + GDFIFOCFG); dwc2_writel(gr->pcgcctl1, hsotg->regs + PCGCCTL1); + dwc2_writel(gr->glpmcfg, hsotg->regs + GLPMCFG); + dwc2_writel(gr->pcgcctl, hsotg->regs + PCGCTL); + dwc2_writel(gr->gi2cctl, hsotg->regs + GI2CCTL); return 0; } diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 3c9dcf3b1b7d..73287ee70a37 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -640,7 +640,7 @@ struct dwc2_hw_params { * @grxfsiz: Backup of GRXFSIZ register * @gnptxfsiz: Backup of GNPTXFSIZ register * @gi2cctl: Backup of GI2CCTL register - * @hptxfsiz: Backup of HPTXFSIZ register + * @glpmcfg: Backup of GLPMCFG register * @gdfifocfg: Backup of GDFIFOCFG register * @gpwrdn: Backup of GPWRDN register */ @@ -652,7 +652,7 @@ struct dwc2_gregs_backup { u32 grxfsiz; u32 gnptxfsiz; u32 gi2cctl; - u32 hptxfsiz; + u32 glpmcfg; u32 pcgcctl; u32 pcgcctl1; u32 gdfifocfg; @@ -700,6 +700,7 @@ struct dwc2_dregs_backup { * @hcintmsk: Backup of HCINTMSK register * @hptr0: Backup of HPTR0 register * @hfir: Backup of HFIR register + * @hptxfsiz: Backup of HPTXFSIZ register */ struct dwc2_hregs_backup { u32 hcfg; @@ -707,6 +708,7 @@ struct dwc2_hregs_backup { u32 hcintmsk[MAX_EPS_CHANNELS]; u32 hprt0; u32 hfir; + u32 hptxfsiz; bool valid; }; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index ee4654b64c7f..44dbcacd02e6 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5318,6 +5318,7 @@ int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg) hr->hprt0 = dwc2_read_hprt0(hsotg); hr->hfir = dwc2_readl(hsotg->regs + HFIR); + hr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); hr->valid = true; return 0; @@ -5354,6 +5355,7 @@ int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg) dwc2_writel(hr->hprt0, hsotg->regs + HPRT0); dwc2_writel(hr->hfir, hsotg->regs + HFIR); + dwc2_writel(hr->hptxfsiz, hsotg->regs + HPTXFSIZ); hsotg->frame_number = 0; return 0; -- cgit v1.2.1 From 94d2666c588cefc86709822153fa11ab770ada54 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:09:46 +0400 Subject: usb: dwc2: Add helper functions for restore routine Add common (host/device) helper functions, which will be called while exiting from hibernation, from both sides. dwc2_restore_essential_regs() dwc2_hib_restore_common() Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 136 ++++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc2/core.h | 3 ++ 2 files changed, 139 insertions(+) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 69c19706334d..b3e3e69f87cd 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -241,6 +241,142 @@ int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg) return ret; } +/** + * dwc2_restore_essential_regs() - Restore essiential regs of core. + * + * @hsotg: Programming view of the DWC_otg controller + * @rmode: Restore mode, enabled in case of remote-wakeup. + * @is_host: Host or device mode. + */ +static void dwc2_restore_essential_regs(struct dwc2_hsotg *hsotg, int rmode, + int is_host) +{ + u32 pcgcctl; + struct dwc2_gregs_backup *gr; + struct dwc2_dregs_backup *dr; + struct dwc2_hregs_backup *hr; + + gr = &hsotg->gr_backup; + dr = &hsotg->dr_backup; + hr = &hsotg->hr_backup; + + dev_dbg(hsotg->dev, "%s: restoring essential regs\n", __func__); + + /* Load restore values for [31:14] bits */ + pcgcctl = (gr->pcgcctl & 0xffffc000); + /* If High Speed */ + if (is_host) { + if (!(pcgcctl & PCGCTL_P2HD_PRT_SPD_MASK)) + pcgcctl |= BIT(17); + } else { + if (!(pcgcctl & PCGCTL_P2HD_DEV_ENUM_SPD_MASK)) + pcgcctl |= BIT(17); + } + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + + /* Umnask global Interrupt in GAHBCFG and restore it */ + dwc2_writel(gr->gahbcfg | GAHBCFG_GLBL_INTR_EN, hsotg->regs + GAHBCFG); + + /* Clear all pending interupts */ + dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); + + /* Unmask restore done interrupt */ + dwc2_writel(GINTSTS_RESTOREDONE, hsotg->regs + GINTMSK); + + /* Restore GUSBCFG and HCFG/DCFG */ + dwc2_writel(gr->gusbcfg, hsotg->regs + GUSBCFG); + + if (is_host) { + dwc2_writel(hr->hcfg, hsotg->regs + HCFG); + if (rmode) + pcgcctl |= PCGCTL_RESTOREMODE; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + + pcgcctl |= PCGCTL_ESS_REG_RESTORED; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + } else { + dwc2_writel(dr->dcfg, hsotg->regs + DCFG); + if (!rmode) + pcgcctl |= PCGCTL_RESTOREMODE | PCGCTL_RSTPDWNMODULE; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + + pcgcctl |= PCGCTL_ESS_REG_RESTORED; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + } +} + +/** + * dwc2_hib_restore_common() - Common part of restore routine. + * + * @hsotg: Programming view of the DWC_otg controller + * @rem_wakeup: Remote-wakeup, enabled in case of remote-wakeup. + * @is_host: Host or device mode. + */ +void dwc2_hib_restore_common(struct dwc2_hsotg *hsotg, int rem_wakeup, + int is_host) +{ + u32 gpwrdn; + + /* Switch-on voltage to the core */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PWRDNSWTCH; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Reset core */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PWRDNRSTN; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Enable restore from PMU */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_RESTORE; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Disable Power Down Clamp */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PWRDNCLMP; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(50); + + if (!is_host && rem_wakeup) + udelay(70); + + /* Deassert reset core */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PWRDNRSTN; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Disable PMU interrupt */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PMUINTSEL; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Set Restore Essential Regs bit in PCGCCTL register */ + dwc2_restore_essential_regs(hsotg, rem_wakeup, is_host); + + /* + * Wait For Restore_done Interrupt. This mechanism of polling the + * interrupt is introduced to avoid any possible race conditions + */ + if (dwc2_hsotg_wait_bit_set(hsotg, GINTSTS, GINTSTS_RESTOREDONE, + 20000)) { + dev_dbg(hsotg->dev, + "%s: Restore Done wan't generated here\n", + __func__); + } else { + dev_dbg(hsotg->dev, "restore done generated here\n"); + } +} + /** * dwc2_wait_for_mode() - Waits for the controller mode. * @hsotg: Programming view of the DWC_otg controller. diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 73287ee70a37..59dac9a1bc8d 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1153,6 +1153,9 @@ void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg); void dwc2_enable_global_interrupts(struct dwc2_hsotg *hcd); void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd); +void dwc2_hib_restore_common(struct dwc2_hsotg *hsotg, int rem_wakeup, + int is_host); + void dwc2_enable_acg(struct dwc2_hsotg *hsotg); /* This function should be called on every hardware interrupt. */ -- cgit v1.2.1 From c5c403dc43365d1669e5a36829356b1bfddbd39e Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:10:13 +0400 Subject: usb: dwc2: Add host/device hibernation functions Add host/device hibernation functions which must be wrapped by core's dwc2_enter_hibernation()/dwc2_exit_hibernation() functions. Make dwc2_backup_global_registers dwc2_restore_global_register non-static to use them in both host/gadget sides. Added function names: dwc2_gadget_enter_hibernation() dwc2_gadget_exit_hibernation() dwc2_host_enter_hibernation() dwc2_host_exit_hibernation() Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 4 +- drivers/usb/dwc2/core.h | 18 ++++ drivers/usb/dwc2/gadget.c | 176 ++++++++++++++++++++++++++++++++++++ drivers/usb/dwc2/hcd.c | 223 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 419 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index b3e3e69f87cd..73b05a8ccba1 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -64,7 +64,7 @@ * * @hsotg: Programming view of the DWC_otg controller */ -static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) +int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) { struct dwc2_gregs_backup *gr; @@ -96,7 +96,7 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) * * @hsotg: Programming view of the DWC_otg controller */ -static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) +int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) { struct dwc2_gregs_backup *gr; diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 59dac9a1bc8d..b04c794c6f13 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1155,6 +1155,8 @@ void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd); void dwc2_hib_restore_common(struct dwc2_hsotg *hsotg, int rem_wakeup, int is_host); +int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg); +int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg); void dwc2_enable_acg(struct dwc2_hsotg *hsotg); @@ -1224,6 +1226,9 @@ int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode); #define dwc2_is_device_connected(hsotg) (hsotg->connected) int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg); int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, int remote_wakeup); +int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg); +int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, + int rem_wakeup, int reset); int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg); @@ -1250,6 +1255,11 @@ static inline int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg) static inline int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, int remote_wakeup) { return 0; } +static inline int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg) +{ return 0; } +static inline int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, + int rem_wakeup, int reset) +{ return 0; } static inline int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg) { return 0; } static inline int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg) @@ -1267,6 +1277,9 @@ void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force); void dwc2_hcd_start(struct dwc2_hsotg *hsotg); int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg); int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg); +int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg); +int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, + int rem_wakeup, int reset); #else static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg) { return 0; } @@ -1283,6 +1296,11 @@ static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg) { return 0; } static inline int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg) { return 0; } +static inline int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) +{ return 0; } +static inline int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, + int rem_wakeup, int reset) +{ return 0; } #endif diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 838e0929db59..6c32bf26e48e 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4913,3 +4913,179 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg->regs + GLPMCFG)); } + +/** + * dwc2_gadget_enter_hibernation() - Put controller in Hibernation. + * + * @hsotg: Programming view of the DWC_otg controller + * + * Return non-zero if failed to enter to hibernation. + */ +int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg) +{ + u32 gpwrdn; + int ret = 0; + + /* Change to L2(suspend) state */ + hsotg->lx_state = DWC2_L2; + dev_dbg(hsotg->dev, "Start of hibernation completed\n"); + ret = dwc2_backup_global_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to backup global registers\n", + __func__); + return ret; + } + ret = dwc2_backup_device_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to backup device registers\n", + __func__); + return ret; + } + + gpwrdn = GPWRDN_PWRDNRSTN; + gpwrdn |= GPWRDN_PMUACTV; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Set flag to indicate that we are in hibernation */ + hsotg->hibernated = 1; + + /* Enable interrupts from wake up logic */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PMUINTSEL; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Unmask device mode interrupts in GPWRDN */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_RST_DET_MSK; + gpwrdn |= GPWRDN_LNSTSCHG_MSK; + gpwrdn |= GPWRDN_STS_CHGINT_MSK; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Enable Power Down Clamp */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PWRDNCLMP; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Switch off VDD */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PWRDNSWTCH; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Save gpwrdn register for further usage if stschng interrupt */ + hsotg->gr_backup.gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + dev_dbg(hsotg->dev, "Hibernation completed\n"); + + return ret; +} + +/** + * dwc2_gadget_exit_hibernation() + * This function is for exiting from Device mode hibernation by host initiated + * resume/reset and device initiated remote-wakeup. + * + * @hsotg: Programming view of the DWC_otg controller + * @rem_wakeup: indicates whether resume is initiated by Device or Host. + * @param reset: indicates whether resume is initiated by Reset. + * + * Return non-zero if failed to exit from hibernation. + */ +int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, + int rem_wakeup, int reset) +{ + u32 pcgcctl; + u32 gpwrdn; + u32 dctl; + int ret = 0; + struct dwc2_gregs_backup *gr; + struct dwc2_dregs_backup *dr; + + gr = &hsotg->gr_backup; + dr = &hsotg->dr_backup; + + if (!hsotg->hibernated) { + dev_dbg(hsotg->dev, "Already exited from Hibernation\n"); + return 1; + } + dev_dbg(hsotg->dev, + "%s: called with rem_wakeup = %d reset = %d\n", + __func__, rem_wakeup, reset); + + dwc2_hib_restore_common(hsotg, rem_wakeup, 0); + + if (!reset) { + /* Clear all pending interupts */ + dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); + } + + /* De-assert Restore */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_RESTORE; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + if (!rem_wakeup) { + pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); + pcgcctl &= ~PCGCTL_RSTPDWNMODULE; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + } + + /* Restore GUSBCFG, DCFG and DCTL */ + dwc2_writel(gr->gusbcfg, hsotg->regs + GUSBCFG); + dwc2_writel(dr->dcfg, hsotg->regs + DCFG); + dwc2_writel(dr->dctl, hsotg->regs + DCTL); + + /* De-assert Wakeup Logic */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PMUACTV; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + + if (rem_wakeup) { + udelay(10); + /* Start Remote Wakeup Signaling */ + dwc2_writel(dr->dctl | DCTL_RMTWKUPSIG, hsotg->regs + DCTL); + } else { + udelay(50); + /* Set Device programming done bit */ + dctl = dwc2_readl(hsotg->regs + DCTL); + dctl |= DCTL_PWRONPRGDONE; + dwc2_writel(dctl, hsotg->regs + DCTL); + } + /* Wait for interrupts which must be cleared */ + mdelay(2); + /* Clear all pending interupts */ + dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); + + /* Restore global registers */ + ret = dwc2_restore_global_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to restore registers\n", + __func__); + return ret; + } + + /* Restore device registers */ + ret = dwc2_restore_device_registers(hsotg, rem_wakeup); + if (ret) { + dev_err(hsotg->dev, "%s: failed to restore device registers\n", + __func__); + return ret; + } + + if (rem_wakeup) { + mdelay(10); + dctl = dwc2_readl(hsotg->regs + DCTL); + dctl &= ~DCTL_RMTWKUPSIG; + dwc2_writel(dctl, hsotg->regs + DCTL); + } + + hsotg->hibernated = 0; + hsotg->lx_state = DWC2_L0; + dev_dbg(hsotg->dev, "Hibernation recovery completes here\n"); + + return ret; +} diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 44dbcacd02e6..f045ee3c927e 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5360,3 +5360,226 @@ int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg) return 0; } + +/** + * dwc2_host_enter_hibernation() - Put controller in Hibernation. + * + * @hsotg: Programming view of the DWC_otg controller + */ +int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) +{ + unsigned long flags; + int ret = 0; + u32 hprt0; + u32 pcgcctl; + u32 gusbcfg; + u32 gpwrdn; + + dev_dbg(hsotg->dev, "Preparing host for hibernation\n"); + ret = dwc2_backup_global_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to backup global registers\n", + __func__); + return ret; + } + ret = dwc2_backup_host_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to backup host registers\n", + __func__); + return ret; + } + + /* Enter USB Suspend Mode */ + hprt0 = dwc2_readl(hsotg->regs + HPRT0); + hprt0 |= HPRT0_SUSP; + hprt0 &= ~HPRT0_ENA; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + + /* Wait for the HPRT0.PrtSusp register field to be set */ + if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 300)) + dev_warn(hsotg->dev, "Suspend wasn't genereted\n"); + + /* + * We need to disable interrupts to prevent servicing of any IRQ + * during going to hibernation + */ + spin_lock_irqsave(&hsotg->lock, flags); + hsotg->lx_state = DWC2_L2; + + gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); + if (gusbcfg & GUSBCFG_ULPI_UTMI_SEL) { + /* ULPI interface */ + /* Suspend the Phy Clock */ + pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); + pcgcctl |= PCGCTL_STOPPCLK; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PMUACTV; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + } else { + /* UTMI+ Interface */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PMUACTV; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); + pcgcctl |= PCGCTL_STOPPCLK; + dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); + udelay(10); + } + + /* Enable interrupts from wake up logic */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PMUINTSEL; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Unmask host mode interrupts in GPWRDN */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_DISCONN_DET_MSK; + gpwrdn |= GPWRDN_LNSTSCHG_MSK; + gpwrdn |= GPWRDN_STS_CHGINT_MSK; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Enable Power Down Clamp */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PWRDNCLMP; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Switch off VDD */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn |= GPWRDN_PWRDNSWTCH; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + + hsotg->hibernated = 1; + hsotg->bus_suspended = 1; + dev_dbg(hsotg->dev, "Host hibernation completed\n"); + spin_unlock_irqrestore(&hsotg->lock, flags); + return ret; +} + +/* + * dwc2_host_exit_hibernation() + * + * @hsotg: Programming view of the DWC_otg controller + * @rem_wakeup: indicates whether resume is initiated by Device or Host. + * @param reset: indicates whether resume is initiated by Reset. + * + * Return: non-zero if failed to enter to hibernation. + * + * This function is for exiting from Host mode hibernation by + * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup. + */ +int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, + int reset) +{ + u32 gpwrdn; + u32 hprt0; + int ret = 0; + struct dwc2_gregs_backup *gr; + struct dwc2_hregs_backup *hr; + + gr = &hsotg->gr_backup; + hr = &hsotg->hr_backup; + + dev_dbg(hsotg->dev, + "%s: called with rem_wakeup = %d reset = %d\n", + __func__, rem_wakeup, reset); + + dwc2_hib_restore_common(hsotg, rem_wakeup, 1); + hsotg->hibernated = 0; + + /* + * This step is not described in functional spec but if not wait for + * this delay, mismatch interrupts occurred because just after restore + * core is in Device mode(gintsts.curmode == 0) + */ + mdelay(100); + + /* Clear all pending interupts */ + dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); + + /* De-assert Restore */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_RESTORE; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + /* Restore GUSBCFG, HCFG */ + dwc2_writel(gr->gusbcfg, hsotg->regs + GUSBCFG); + dwc2_writel(hr->hcfg, hsotg->regs + HCFG); + + /* De-assert Wakeup Logic */ + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn &= ~GPWRDN_PMUACTV; + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + udelay(10); + + hprt0 = hr->hprt0; + hprt0 |= HPRT0_PWR; + hprt0 &= ~HPRT0_ENA; + hprt0 &= ~HPRT0_SUSP; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + + hprt0 = hr->hprt0; + hprt0 |= HPRT0_PWR; + hprt0 &= ~HPRT0_ENA; + hprt0 &= ~HPRT0_SUSP; + + if (reset) { + hprt0 |= HPRT0_RST; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + + /* Wait for Resume time and then program HPRT again */ + mdelay(60); + hprt0 &= ~HPRT0_RST; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + } else { + hprt0 |= HPRT0_RES; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + + /* Wait for Resume time and then program HPRT again */ + mdelay(100); + hprt0 &= ~HPRT0_RES; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + } + /* Clear all interrupt status */ + hprt0 = dwc2_readl(hsotg->regs + HPRT0); + hprt0 |= HPRT0_CONNDET; + hprt0 |= HPRT0_ENACHG; + hprt0 &= ~HPRT0_ENA; + dwc2_writel(hprt0, hsotg->regs + HPRT0); + + hprt0 = dwc2_readl(hsotg->regs + HPRT0); + + /* Clear all pending interupts */ + dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); + + /* Restore global registers */ + ret = dwc2_restore_global_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to restore registers\n", + __func__); + return ret; + } + + /* Restore host registers */ + ret = dwc2_restore_host_registers(hsotg); + if (ret) { + dev_err(hsotg->dev, "%s: failed to restore host registers\n", + __func__); + return ret; + } + + hsotg->hibernated = 0; + hsotg->bus_suspended = 0; + hsotg->lx_state = DWC2_L0; + dev_dbg(hsotg->dev, "Host hibernation restore complete\n"); + return ret; +} -- cgit v1.2.1 From 624815ce322dda89714d887c6445dbd6ca45af31 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:10:39 +0400 Subject: usb: dwc2: Add dwc2_enter_hibernation(), dwc2_exit_hibernation() These are wrapper functions which are calling device or host enter/exit hibernation functions. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 38 ++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc2/core.h | 3 +++ 2 files changed, 41 insertions(+) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 73b05a8ccba1..280ecddf82cb 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -448,6 +448,44 @@ static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg) return true; } +/* + * dwc2_enter_hibernation() - Common function to enter hibernation. + * + * @hsotg: Programming view of the DWC_otg controller + * @is_host: True if core is in host mode. + * + * Return: 0 if successful, negative error code otherwise + */ +int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host) +{ + if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_HIBERNATION) + return -ENOTSUPP; + + if (is_host) + return dwc2_host_enter_hibernation(hsotg); + else + return dwc2_gadget_enter_hibernation(hsotg); +} + +/* + * dwc2_exit_hibernation() - Common function to exit from hibernation. + * + * @hsotg: Programming view of the DWC_otg controller + * @rem_wakeup: Remote-wakeup, enabled in case of remote-wakeup. + * @reset: Enabled in case of restore with reset. + * @is_host: True if core is in host mode. + * + * Return: 0 if successful, negative error code otherwise + */ +int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, + int reset, int is_host) +{ + if (is_host) + return dwc2_host_exit_hibernation(hsotg, rem_wakeup, reset); + else + return dwc2_gadget_exit_hibernation(hsotg, rem_wakeup, reset); +} + /* * Do core a soft reset of the core. Be careful with this because it * resets all the internal state machines of the core. diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index b04c794c6f13..cc7856496a4f 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1134,6 +1134,9 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait); int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg); int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg); int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore); +int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host); +int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, + int reset, int is_host); bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host); void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg); -- cgit v1.2.1 From 97861781dafffe5a9c9cbd0d2a14c9e7ae81d27b Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:11:07 +0400 Subject: usb: dwc2: Allow entering hibernation from USB_SUSPEND interrupt Do changes to allow entering hibernated state from USB_SUSPEND interrupt. All code is added under if conditions and mustn't impact existing functionality. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core_intr.c | 52 +++++++++++++++++++++++++++----------------- 1 file changed, 32 insertions(+), 20 deletions(-) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 41d7dda40cb1..d01581594ce5 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -484,32 +484,44 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg) * state is active */ dsts = dwc2_readl(hsotg->regs + DSTS); - dev_dbg(hsotg->dev, "DSTS=0x%0x\n", dsts); + dev_dbg(hsotg->dev, "%s: DSTS=0x%0x\n", __func__, dsts); dev_dbg(hsotg->dev, - "DSTS.Suspend Status=%d HWCFG4.Power Optimize=%d\n", + "DSTS.Suspend Status=%d HWCFG4.Power Optimize=%d HWCFG4.Hibernation=%d\n", !!(dsts & DSTS_SUSPSTS), - hsotg->hw_params.power_optimized); - if ((dsts & DSTS_SUSPSTS) && hsotg->hw_params.power_optimized) { - /* Ignore suspend request before enumeration */ - if (!dwc2_is_device_connected(hsotg)) { - dev_dbg(hsotg->dev, - "ignore suspend request before enumeration\n"); - return; + hsotg->hw_params.power_optimized, + hsotg->hw_params.hibernation); + + /* Ignore suspend request before enumeration */ + if (!dwc2_is_device_connected(hsotg)) { + dev_dbg(hsotg->dev, + "ignore suspend request before enumeration\n"); + return; + } + if (dsts & DSTS_SUSPSTS) { + if (hsotg->hw_params.power_optimized) { + ret = dwc2_enter_partial_power_down(hsotg); + if (ret) { + if (ret != -ENOTSUPP) + dev_err(hsotg->dev, + "%s: enter partial_power_down failed\n", + __func__); + goto skip_power_saving; + } + + udelay(100); + + /* Ask phy to be suspended */ + if (!IS_ERR_OR_NULL(hsotg->uphy)) + usb_phy_set_suspend(hsotg->uphy, true); } - ret = dwc2_enter_partial_power_down(hsotg); - if (ret) { - if (ret != -ENOTSUPP) + if (hsotg->hw_params.hibernation) { + ret = dwc2_enter_hibernation(hsotg, 0); + if (ret && ret != -ENOTSUPP) dev_err(hsotg->dev, - "enter power_down failed\n"); - goto skip_power_saving; + "%s: enter hibernation failed\n", + __func__); } - - udelay(100); - - /* Ask phy to be suspended */ - if (!IS_ERR_OR_NULL(hsotg->uphy)) - usb_phy_set_suspend(hsotg->uphy, true); skip_power_saving: /* * Change to L2 (suspend) state before releasing -- cgit v1.2.1 From 65c9c4c6b01fe6febf516586489679770a0d8443 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:11:35 +0400 Subject: usb: dwc2: Add dwc2_handle_gpwrdn_intr() handler The GPWRDN interrupts are those that occur in both Host and Device mode while core is in hibernated state. Export dwc2_core_init to be able to use it in GPWRDN_IDSTS interrupt handler. Here we have duplicated init functions in host and gadget sides so I have left things as it was(used corresponing functions for host and gadget), maybe in the future we'll resolve this problem and will use dwc2_core_init for both sides. Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 3 ++ drivers/usb/dwc2/core_intr.c | 117 +++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc2/hcd.c | 2 +- 3 files changed, 121 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index cc7856496a4f..ca3c7030b38e 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1278,6 +1278,7 @@ int dwc2_hcd_get_future_frame_number(struct dwc2_hsotg *hsotg, int us); void dwc2_hcd_connect(struct dwc2_hsotg *hsotg); void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force); void dwc2_hcd_start(struct dwc2_hsotg *hsotg); +int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup); int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg); int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg); int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg); @@ -1293,6 +1294,8 @@ static inline void dwc2_hcd_connect(struct dwc2_hsotg *hsotg) {} static inline void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force) {} static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {} static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {} +static inline int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup) +{ return 0; } static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg) { return 0; } static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index d01581594ce5..2982a155734d 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -642,6 +642,116 @@ static u32 dwc2_read_common_intr(struct dwc2_hsotg *hsotg) return 0; } +/* + * GPWRDN interrupt handler. + * + * The GPWRDN interrupts are those that occur in both Host and + * Device mode while core is in hibernated state. + */ +static void dwc2_handle_gpwrdn_intr(struct dwc2_hsotg *hsotg) +{ + u32 gpwrdn; + int linestate; + + gpwrdn = dwc2_readl(hsotg->regs + GPWRDN); + /* clear all interrupt */ + dwc2_writel(gpwrdn, hsotg->regs + GPWRDN); + linestate = (gpwrdn & GPWRDN_LINESTATE_MASK) >> GPWRDN_LINESTATE_SHIFT; + dev_dbg(hsotg->dev, + "%s: dwc2_handle_gpwrdwn_intr called gpwrdn= %08x\n", __func__, + gpwrdn); + + if ((gpwrdn & GPWRDN_DISCONN_DET) && + (gpwrdn & GPWRDN_DISCONN_DET_MSK) && !linestate) { + u32 gpwrdn_tmp; + + dev_dbg(hsotg->dev, "%s: GPWRDN_DISCONN_DET\n", __func__); + + /* Switch-on voltage to the core */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp &= ~GPWRDN_PWRDNSWTCH; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + udelay(10); + + /* Reset core */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp &= ~GPWRDN_PWRDNRSTN; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + udelay(10); + + /* Disable Power Down Clamp */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp &= ~GPWRDN_PWRDNCLMP; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + udelay(10); + + /* Deassert reset core */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp |= GPWRDN_PWRDNRSTN; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + udelay(10); + + /* Disable PMU interrupt */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp &= ~GPWRDN_PMUINTSEL; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + + /* De-assert Wakeup Logic */ + gpwrdn_tmp = dwc2_readl(hsotg->regs + GPWRDN); + gpwrdn_tmp &= ~GPWRDN_PMUACTV; + dwc2_writel(gpwrdn_tmp, hsotg->regs + GPWRDN); + + hsotg->hibernated = 0; + + if (gpwrdn & GPWRDN_IDSTS) { + hsotg->op_state = OTG_STATE_B_PERIPHERAL; + dwc2_core_init(hsotg, false); + dwc2_enable_global_interrupts(hsotg); + dwc2_hsotg_core_init_disconnected(hsotg, false); + dwc2_hsotg_core_connect(hsotg); + } else { + hsotg->op_state = OTG_STATE_A_HOST; + + /* Initialize the Core for Host mode */ + dwc2_core_init(hsotg, false); + dwc2_enable_global_interrupts(hsotg); + dwc2_hcd_start(hsotg); + } + } + + if ((gpwrdn & GPWRDN_LNSTSCHG) && + (gpwrdn & GPWRDN_LNSTSCHG_MSK) && linestate) { + dev_dbg(hsotg->dev, "%s: GPWRDN_LNSTSCHG\n", __func__); + if (hsotg->hw_params.hibernation && + hsotg->hibernated) { + if (gpwrdn & GPWRDN_IDSTS) { + dwc2_exit_hibernation(hsotg, 0, 0, 0); + call_gadget(hsotg, resume); + } else { + dwc2_exit_hibernation(hsotg, 1, 0, 1); + } + } + } + if ((gpwrdn & GPWRDN_RST_DET) && (gpwrdn & GPWRDN_RST_DET_MSK)) { + dev_dbg(hsotg->dev, "%s: GPWRDN_RST_DET\n", __func__); + if (!linestate && (gpwrdn & GPWRDN_BSESSVLD)) + dwc2_exit_hibernation(hsotg, 0, 1, 0); + } + if ((gpwrdn & GPWRDN_STS_CHGINT) && + (gpwrdn & GPWRDN_STS_CHGINT_MSK) && linestate) { + dev_dbg(hsotg->dev, "%s: GPWRDN_STS_CHGINT\n", __func__); + if (hsotg->hw_params.hibernation && + hsotg->hibernated) { + if (gpwrdn & GPWRDN_IDSTS) { + dwc2_exit_hibernation(hsotg, 0, 0, 0); + call_gadget(hsotg, resume); + } else { + dwc2_exit_hibernation(hsotg, 1, 0, 1); + } + } + } +} + /* * Common interrupt handler * @@ -672,6 +782,13 @@ irqreturn_t dwc2_handle_common_intr(int irq, void *dev) if (gintsts & ~GINTSTS_PRTINT) retval = IRQ_HANDLED; + /* In case of hibernated state gintsts must not work */ + if (hsotg->hibernated) { + dwc2_handle_gpwrdn_intr(hsotg); + retval = IRQ_HANDLED; + goto out; + } + if (gintsts & GINTSTS_MODEMIS) dwc2_handle_mode_mismatch_intr(hsotg); if (gintsts & GINTSTS_OTGINT) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index f045ee3c927e..4fbd0d3c668c 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2241,7 +2241,7 @@ static int dwc2_hcd_endpoint_reset(struct dwc2_hsotg *hsotg, * @hsotg: Programming view of the DWC_otg controller * @initial_setup: If true then this is the first init for this instance. */ -static int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup) +int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup) { u32 usbcfg, otgctl; int retval; -- cgit v1.2.1 From f260b2508557dc2ffbe45192510b5dfdef44a21d Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:12:02 +0400 Subject: usb: dwc2: Change hub-control to allow hibernation Affected cases: ClearPortFeature's USB_PORT_FEAT_SUSPEND SetPortFeature's USB_PORT_FEAT_SUSPEND USB_PORT_FEAT_RESET Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 4fbd0d3c668c..66c074265dab 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3506,8 +3506,12 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, dev_dbg(hsotg->dev, "ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); - if (hsotg->bus_suspended) - dwc2_port_resume(hsotg); + if (hsotg->bus_suspended) { + if (hsotg->hibernated) + dwc2_exit_hibernation(hsotg, 0, 0, 1); + else + dwc2_port_resume(hsotg); + } break; case USB_PORT_FEAT_POWER: @@ -3715,7 +3719,10 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, "SetPortFeature - USB_PORT_FEAT_SUSPEND\n"); if (windex != hsotg->otg_port) goto error; - dwc2_port_suspend(hsotg, windex); + if (hsotg->params.power_down == 2) + dwc2_enter_hibernation(hsotg, 1); + else + dwc2_port_suspend(hsotg, windex); break; case USB_PORT_FEAT_POWER: @@ -3727,6 +3734,9 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, break; case USB_PORT_FEAT_RESET: + if (hsotg->params.power_down == 2 && + hsotg->hibernated) + dwc2_exit_hibernation(hsotg, 0, 1, 1); hprt0 = dwc2_read_hprt0(hsotg); dev_dbg(hsotg->dev, "SetPortFeature - USB_PORT_FEAT_RESET\n"); -- cgit v1.2.1 From 03ea6d6e9e1ff1b0222eb723eee5990d3511cc4d Mon Sep 17 00:00:00 2001 From: John Youn Date: Fri, 16 Feb 2018 14:12:28 +0400 Subject: usb: dwc2: Enable power down Enable the power down option based on the core capability. Signed-off-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: Artur Petrosyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index daf0f9ac7149..6c7588a2f485 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -252,6 +252,20 @@ static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg) p->g_tx_fifo_size[i] = depth_average; } +static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg) +{ + int val; + + if (hsotg->hw_params.hibernation) + val = 2; + else if (hsotg->hw_params.power_optimized) + val = 1; + else + val = 0; + + hsotg->params.power_down = val; +} + /** * dwc2_set_default_params() - Set all core parameters to their * auto-detected default values. @@ -266,6 +280,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) dwc2_set_param_phy_type(hsotg); dwc2_set_param_speed(hsotg); dwc2_set_param_phy_utmi_width(hsotg); + dwc2_set_param_power_down(hsotg); p->phy_ulpi_ddr = false; p->phy_ulpi_ext_vbus = false; @@ -278,7 +293,6 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a); p->uframe_sched = true; p->external_id_pin_ctl = false; - p->power_down = false; p->lpm = true; p->lpm_clock_gating = true; p->besl = true; -- cgit v1.2.1 From 13b1f8e25bfd1d6b96278421f934efdd35be9d5b Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 12:56:03 +0400 Subject: usb: dwc2: Force mode optimizations If the dr_mode is USB_DR_MODE_OTG, forcing the mode is needed during driver probe to get the host and device specific HW parameters. Then we clear the force mode bits so that the core operates in OTG mode. The force mode bits should not be touched at any other time during the driver lifetime and they should be preserved whenever the GUSBCFG register is written to. The force mode bit values will persist across soft resets of the core. If the dr_mode is either USB_DR_MODE_HOST or USB_DR_MODE_PERIPHERAL, the force mode is set just once at probe to configure the core as either a host or peripheral. Given the above, we no longer need any other reset delays, force delays, or any forced modes anywhere else in the driver. So replace all calls to dwc2_core_reset_and_force_dr_mode() with dwc2_core_reset() and remove all other unnecessary delays. Also remove the dwc2_force_mode_if_needed() function since the "if needed" part is already taken care of by the polling in dwc2_force_mode(). Finally, remove all other calls to dwc2_clear_force_mode(). Tested-by: Stefan Wahren Signed-off-by: John Youn Signed-off-by: Vardan Mikayelyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 61 +++++++++++---------------------------------- drivers/usb/dwc2/core.h | 6 ++--- drivers/usb/dwc2/hcd.c | 6 ++--- drivers/usb/dwc2/params.c | 12 ++------- drivers/usb/dwc2/platform.c | 9 ++++++- 5 files changed, 29 insertions(+), 65 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 280ecddf82cb..cf1faf2443d0 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -541,14 +541,14 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait) return 0; } -/* - * Force the mode of the controller. +/** + * dwc2_force_mode() - Force the mode of the controller. * * Forcing the mode is needed for two cases: * * 1) If the dr_mode is set to either HOST or PERIPHERAL we force the * controller to stay in a particular mode regardless of ID pin - * changes. We do this usually after a core reset. + * changes. We do this once during probe. * * 2) During probe we want to read reset values of the hw * configuration registers that are only available in either host or @@ -565,7 +565,7 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait) * the filter is configured and enabled. We poll the current mode of * the controller to account for this delay. */ -static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) +void dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) { u32 gusbcfg; u32 set; @@ -577,17 +577,17 @@ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) * Force mode has no effect if the hardware is not OTG. */ if (!dwc2_hw_is_otg(hsotg)) - return false; + return; /* * If dr_mode is either peripheral or host only, there is no * need to ever force the mode to the opposite mode. */ if (WARN_ON(host && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)) - return false; + return; if (WARN_ON(!host && hsotg->dr_mode == USB_DR_MODE_HOST)) - return false; + return; gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); @@ -599,7 +599,7 @@ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); dwc2_wait_for_mode(hsotg, host); - return true; + return; } /** @@ -615,6 +615,11 @@ void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) { u32 gusbcfg; + if (!dwc2_hw_is_otg(hsotg)) + return; + + dev_dbg(hsotg->dev, "Clearing force mode bits\n"); + gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); gusbcfg &= ~GUSBCFG_FORCEHOSTMODE; gusbcfg &= ~GUSBCFG_FORCEDEVMODE; @@ -629,16 +634,13 @@ void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) */ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) { - bool ret; - switch (hsotg->dr_mode) { case USB_DR_MODE_HOST: - ret = dwc2_force_mode(hsotg, true); /* * NOTE: This is required for some rockchip soc based * platforms on their host-only dwc2. */ - if (!ret) + if (!dwc2_hw_is_otg(hsotg)) msleep(50); break; @@ -655,25 +657,6 @@ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) } } -/* - * Do core a soft reset of the core. Be careful with this because it - * resets all the internal state machines of the core. - * - * Additionally this will apply force mode as per the hsotg->dr_mode - * parameter. - */ -int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg) -{ - int retval; - - retval = dwc2_core_reset(hsotg, false); - if (retval) - return retval; - - dwc2_force_dr_mode(hsotg); - return 0; -} - /* * dwc2_enable_acg - enable active clock gating feature */ @@ -910,22 +893,6 @@ void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg) udelay(1); } -/* - * Forces either host or device mode if the controller is not - * currently in that mode. - * - * Returns true if the mode was forced. - */ -bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host) -{ - if (host && dwc2_is_host_mode(hsotg)) - return false; - else if (!host && dwc2_is_device_mode(hsotg)) - return false; - - return dwc2_force_mode(hsotg, host); -} - bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg) { if (dwc2_readl(hsotg->regs + GSNPSID) == 0xffffffff) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index ca3c7030b38e..bef182993fa0 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -1131,15 +1131,13 @@ static inline bool dwc2_is_hs_iot(struct dwc2_hsotg *hsotg) * and the DWC_otg controller */ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait); -int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg); int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg); int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore); int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host); int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, - int reset, int is_host); + int reset, int is_host); -bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host); -void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg); +void dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host); void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg); bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg); diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 66c074265dab..7341d5abe8e1 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -141,7 +141,7 @@ static int dwc2_fs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) dwc2_writel(usbcfg, hsotg->regs + GUSBCFG); /* Reset after a PHY select */ - retval = dwc2_core_reset_and_force_dr_mode(hsotg); + retval = dwc2_core_reset(hsotg, false); if (retval) { dev_err(hsotg->dev, @@ -239,7 +239,7 @@ static int dwc2_hs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) dwc2_writel(usbcfg, hsotg->regs + GUSBCFG); /* Reset after setting the PHY parameters */ - retval = dwc2_core_reset_and_force_dr_mode(hsotg); + retval = dwc2_core_reset(hsotg, false); if (retval) { dev_err(hsotg->dev, "%s: Reset failed, aborting", __func__); @@ -2270,7 +2270,7 @@ int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup) * needed to in order to properly detect various parameters). */ if (!initial_setup) { - retval = dwc2_core_reset_and_force_dr_mode(hsotg); + retval = dwc2_core_reset(hsotg, false); if (retval) { dev_err(hsotg->dev, "%s(): Reset failed, aborting\n", __func__); diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 6c7588a2f485..b3871fcafe1e 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -640,19 +640,15 @@ static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg) struct dwc2_hw_params *hw = &hsotg->hw_params; u32 gnptxfsiz; u32 hptxfsiz; - bool forced; if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) return; - forced = dwc2_force_mode_if_needed(hsotg, true); + dwc2_force_mode(hsotg, true); gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); - if (forced) - dwc2_clear_force_mode(hsotg); - hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT; hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >> @@ -667,14 +663,13 @@ static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg) static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg) { struct dwc2_hw_params *hw = &hsotg->hw_params; - bool forced; u32 gnptxfsiz; int fifo, fifo_count; if (hsotg->dr_mode == USB_DR_MODE_HOST) return; - forced = dwc2_force_mode_if_needed(hsotg, false); + dwc2_force_mode(hsotg, false); gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); @@ -686,9 +681,6 @@ static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg) FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT; } - if (forced) - dwc2_clear_force_mode(hsotg); - hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT; } diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 7d80e6360a5a..4c0819554bcd 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -427,13 +427,20 @@ static int dwc2_driver_probe(struct platform_device *dev) * Reset before dwc2_get_hwparams() then it could get power-on real * reset value form registers. */ - dwc2_core_reset_and_force_dr_mode(hsotg); + retval = dwc2_core_reset(hsotg, false); + if (retval) + goto error; /* Detect config values from hardware */ retval = dwc2_get_hwparams(hsotg); if (retval) goto error; + /* + * For OTG cores, set the force mode bits to reflect the value + * of dr_mode. Force mode bits should not be touched at any + * other time after this. + */ dwc2_force_dr_mode(hsotg); retval = dwc2_init_params(hsotg); -- cgit v1.2.1 From 531ef5ebea96394ddb7f554d4d88e017dde30a59 Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Tue, 13 Feb 2018 09:28:12 +0100 Subject: usb: dwc2: add support for host mode external vbus supply This patch adds a way to enable an external vbus supply in host mode, when dwc2 drvvbus signal is not used. This patch is very similar to the one done in U-Boot dwc2 driver [1]. It also adds dynamic vbus supply management depending on the role and state of the core. [1] https://lists.denx.de/pipermail/u-boot/2017-March/283434.html Signed-off-by: Amelie Delaunay Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 2 ++ drivers/usb/dwc2/hcd.c | 26 ++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index bef182993fa0..d83be5651f87 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -819,6 +819,7 @@ struct dwc2_hregs_backup { * @plat: The platform specific configuration data. This can be * removed once all SoCs support usb transceiver. * @supplies: Definition of USB power supplies + * @vbus_supply: Regulator supplying vbus. * @phyif: PHY interface width * @lock: Spinlock that protects all the driver data structures * @priv: Stores a pointer to the struct usb_hcd @@ -958,6 +959,7 @@ struct dwc2_hsotg { struct usb_phy *uphy; struct dwc2_hsotg_plat *plat; struct regulator_bulk_data supplies[DWC2_NUM_SUPPLIES]; + struct regulator *vbus_supply; u32 phyif; spinlock_t lock; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 7341d5abe8e1..dcfda5eb4cac 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -356,6 +356,23 @@ static void dwc2_gusbcfg_init(struct dwc2_hsotg *hsotg) dwc2_writel(usbcfg, hsotg->regs + GUSBCFG); } +static int dwc2_vbus_supply_init(struct dwc2_hsotg *hsotg) +{ + hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus"); + if (IS_ERR(hsotg->vbus_supply)) + return 0; + + return regulator_enable(hsotg->vbus_supply); +} + +static int dwc2_vbus_supply_exit(struct dwc2_hsotg *hsotg) +{ + if (hsotg->vbus_supply) + return regulator_disable(hsotg->vbus_supply); + + return 0; +} + /** * dwc2_enable_host_interrupts() - Enables the Host mode interrupts * @@ -3275,6 +3292,7 @@ static void dwc2_conn_id_status_change(struct work_struct *work) /* B-Device connector (Device Mode) */ if (gotgctl & GOTGCTL_CONID_B) { + dwc2_vbus_supply_exit(hsotg); /* Wait for switch to device mode */ dev_dbg(hsotg->dev, "connId B\n"); if (hsotg->bus_suspended) { @@ -4323,6 +4341,9 @@ static int _dwc2_hcd_start(struct usb_hcd *hcd) } spin_unlock_irqrestore(&hsotg->lock, flags); + + dwc2_vbus_supply_init(hsotg); + return 0; } @@ -4350,6 +4371,8 @@ static void _dwc2_hcd_stop(struct usb_hcd *hcd) clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); spin_unlock_irqrestore(&hsotg->lock, flags); + dwc2_vbus_supply_exit(hsotg); + usleep_range(1000, 3000); } @@ -4386,6 +4409,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) hprt0 |= HPRT0_SUSP; hprt0 &= ~HPRT0_PWR; dwc2_writel(hprt0, hsotg->regs + HPRT0); + dwc2_vbus_supply_exit(hsotg); } /* Enter partial_power_down */ @@ -4466,6 +4490,8 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) spin_unlock_irqrestore(&hsotg->lock, flags); dwc2_port_resume(hsotg); } else { + dwc2_vbus_supply_init(hsotg); + /* Wait for controller to correctly update D+/D- level */ usleep_range(3000, 5000); -- cgit v1.2.1 From 365b7673c34fed58b0a04ee4a7a51102c65ccd2e Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Fri, 19 Jan 2018 14:43:01 +0400 Subject: usb: dwc2: Make dwc2_force_mode() static Declared dwc2_force_mode() function as static, because it was used only in core.c file, for fixing sparse error. Acked-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index cf1faf2443d0..18a0a1771289 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -611,7 +611,7 @@ void dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) * the force mode. We only need to call this once during probe if * dr_mode == OTG. */ -void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) +static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) { u32 gusbcfg; -- cgit v1.2.1 From 498f0478aba425ba5555a72e72fe1ce9ee45a0bd Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 9 Mar 2018 14:47:04 +0200 Subject: usb: dwc3: Prevent indefinite sleep in _dwc3_set_mode during suspend/resume In the following test we get stuck by sleeping forever in _dwc3_set_mode() after which dual-role switching doesn't work. On dra7-evm's dual-role port, - Load g_zero gadget driver and enumerate to host - suspend to mem - disconnect USB cable to host and connect otg cable with Pen drive in it. - resume system - we sleep indefinitely in _dwc3_set_mode due to. dwc3_gadget_exit()->usb_del_gadget_udc()->udc_stop()-> dwc3_gadget_stop()->wait_event_lock_irq() To fix this instead of waiting indefinitely with wait_event_lock_irq() we use wait_event_interruptible_lock_irq_timeout() and print and error message if there was a timeout. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2bda4eb1e9ac..7c3a6e4ea2a6 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1950,6 +1950,7 @@ static int dwc3_gadget_stop(struct usb_gadget *g) struct dwc3 *dwc = gadget_to_dwc(g); unsigned long flags; int epnum; + u32 tmo_eps = 0; spin_lock_irqsave(&dwc->lock, flags); @@ -1960,6 +1961,7 @@ static int dwc3_gadget_stop(struct usb_gadget *g) for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) { struct dwc3_ep *dep = dwc->eps[epnum]; + int ret; if (!dep) continue; @@ -1967,9 +1969,24 @@ static int dwc3_gadget_stop(struct usb_gadget *g) if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) continue; - wait_event_lock_irq(dep->wait_end_transfer, - !(dep->flags & DWC3_EP_END_TRANSFER_PENDING), - dwc->lock); + ret = wait_event_interruptible_lock_irq_timeout(dep->wait_end_transfer, + !(dep->flags & DWC3_EP_END_TRANSFER_PENDING), + dwc->lock, msecs_to_jiffies(5)); + + if (ret <= 0) { + /* Timed out or interrupted! There's nothing much + * we can do so we just log here and print which + * endpoints timed out at the end. + */ + tmo_eps |= 1 << epnum; + dep->flags &= DWC3_EP_END_TRANSFER_PENDING; + } + } + + if (tmo_eps) { + dev_err(dwc->dev, + "end transfer timed out on endpoints 0x%x [bitmap]\n", + tmo_eps); } out: -- cgit v1.2.1 From 07b8dc5523d2af82064a31a919ace75c67308cff Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 13 Mar 2018 15:50:24 +0000 Subject: usb: dwc2: fix spelling mistake: "genereted" -> "generated" Trivial fix to spelling mistake in dev_warn warning message text. Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index dcfda5eb4cac..190f95964000 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5433,7 +5433,7 @@ int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) /* Wait for the HPRT0.PrtSusp register field to be set */ if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 300)) - dev_warn(hsotg->dev, "Suspend wasn't genereted\n"); + dev_warn(hsotg->dev, "Suspend wasn't generated\n"); /* * We need to disable interrupts to prevent servicing of any IRQ -- cgit v1.2.1 From 124380cb0e7a5fb704a81d135e5b7b4904c1ef95 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Fri, 23 Feb 2018 00:40:11 +0300 Subject: phy: lpc18xx-usb-otg: error handling in lpc18xx_usb_otg_phy_power_on() If regmap_update_bits() fails in lpc18xx_usb_otg_phy_power_on(), lpc->clk is left enabled. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-lpc18xx-usb-otg.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/phy/phy-lpc18xx-usb-otg.c b/drivers/phy/phy-lpc18xx-usb-otg.c index 3b7a71eb5b7e..7de280a45421 100644 --- a/drivers/phy/phy-lpc18xx-usb-otg.c +++ b/drivers/phy/phy-lpc18xx-usb-otg.c @@ -60,8 +60,14 @@ static int lpc18xx_usb_otg_phy_power_on(struct phy *phy) return ret; /* The bit in CREG is cleared to enable the PHY */ - return regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, + ret = regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, LPC18XX_CREG_CREG0_USB0PHY, 0); + if (ret) { + clk_disable(lpc->clk); + return ret; + } + + return 0; } static int lpc18xx_usb_otg_phy_power_off(struct phy *phy) -- cgit v1.2.1 From 4036325609abf29f0dfdffb6e598c56645820f4e Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:38 +0800 Subject: phy: phy-mtk-tphy: keep default value of mcu_bus_ck_gate_en The default value of mcu_bus_ck_gate_en is 1, if clear it, will prevent system to enter deep idle mode, so keep its default value and without affecting PCIe function. Signed-off-by: Chunfeng Yun Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/mediatek/phy-mtk-tphy.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 1e96d0740ef5..6073c25eb3f2 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -688,8 +688,7 @@ static void pcie_phy_instance_power_on(struct mtk_tphy *tphy, u32 tmp; tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLD); - tmp &= ~(P3C_FORCE_IP_SW_RST | P3C_MCU_BUS_CK_GATE_EN | - P3C_REG_IP_SW_RST); + tmp &= ~(P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST); writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLD); tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLE); -- cgit v1.2.1 From 8833ebf4f8530834ff8f95f309145f5e2da02999 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:39 +0800 Subject: phy: phy-mtk-tphy: add configurable parameters for slew rate calibrate There are two parameters, ref_clk and coefficient, for U2 slew rate calibrate which may vary on different SoCs, here allow them to be configurable Signed-off-by: Chunfeng Yun Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/mediatek/phy-mtk-tphy.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 6073c25eb3f2..38c281b5abbb 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -306,6 +306,8 @@ struct mtk_tphy { const struct mtk_phy_pdata *pdata; struct mtk_phy_instance **phys; int nphys; + int src_ref_clk; /* MHZ, reference clock for slew rate calibrate */ + int src_coef; /* coefficient for slew rate calibrate */ }; static void hs_slew_rate_calibrate(struct mtk_tphy *tphy, @@ -360,16 +362,17 @@ static void hs_slew_rate_calibrate(struct mtk_tphy *tphy, writel(tmp, fmreg + U3P_U2FREQ_FMMONR1); if (fm_out) { - /* ( 1024 / FM_OUT ) x reference clock frequency x 0.028 */ - tmp = U3P_FM_DET_CYCLE_CNT * U3P_REF_CLK * U3P_SLEW_RATE_COEF; - tmp /= fm_out; + /* ( 1024 / FM_OUT ) x reference clock frequency x coef */ + tmp = tphy->src_ref_clk * tphy->src_coef; + tmp = (tmp * U3P_FM_DET_CYCLE_CNT) / fm_out; calibration_val = DIV_ROUND_CLOSEST(tmp, U3P_SR_COEF_DIVISOR); } else { /* if FM detection fail, set default value */ calibration_val = 4; } - dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d\n", - instance->index, fm_out, calibration_val); + dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d (clk:%d, coef:%d)\n", + instance->index, fm_out, calibration_val, + tphy->src_ref_clk, tphy->src_coef); /* set HS slew rate */ tmp = readl(com + U3P_USBPHYACR5); @@ -1041,6 +1044,13 @@ static int mtk_tphy_probe(struct platform_device *pdev) tphy->u3phya_ref = NULL; } + tphy->src_ref_clk = U3P_REF_CLK; + tphy->src_coef = U3P_SLEW_RATE_COEF; + /* update parameters of slew rate calibrate if exist */ + device_property_read_u32(dev, "mediatek,src-ref-clk-mhz", + &tphy->src_ref_clk); + device_property_read_u32(dev, "mediatek,src-coef", &tphy->src_coef); + port = 0; for_each_child_of_node(np, child_np) { struct mtk_phy_instance *instance; -- cgit v1.2.1 From c55fbcb8cf6b3653103f046232ada503e482b57d Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:40 +0800 Subject: dt-bindings: phy-mtk-tphy: add properties for U2 slew rate calibrate Add two properties of ref_clk and coefficient used by U2 slew rate calibrate which may vary on different SoCs Signed-off-by: Chunfeng Yun Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt index 41e09ed2ca70..0d34b2b4a6b7 100644 --- a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt +++ b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt @@ -27,6 +27,10 @@ Optional properties (controller (parent) node): - reg : offset and length of register shared by multiple ports, exclude port's private register. It is needed on mt2701 and mt8173, but not on mt2712. + - mediatek,src-ref-clk-mhz : frequency of reference clock for slew rate + calibrate + - mediatek,src-coef : coefficient for slew rate calibrate, depends on + SoC process Required properties (port (child) node): - reg : address and length of the register set for the port. -- cgit v1.2.1 From ae3f672cab5d1fef9fc4c6436e9d7e347eba0b13 Mon Sep 17 00:00:00 2001 From: Alexander Monakov Date: Sun, 4 Mar 2018 21:18:07 +0300 Subject: phy: berlin-usb: adjust USB_PHY_RX_CTRL init flags Make the value written into the USB_PHY_RX_CTRL configuration register match 0xAA79 value written by manufacturer-supplied kernels for Sony NSZ-GS7 (Berlin2 SoC), Google Chromecast and Valve Steam Link (BG2CD). This fixes timeouts communicating to the internal hub on Steam Link. Cc: Kishon Vijay Abraham I Cc: Antoine Tenart Signed-off-by: Alexander Monakov Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/marvell/phy-berlin-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/marvell/phy-berlin-usb.c b/drivers/phy/marvell/phy-berlin-usb.c index 2017751ede26..8f2b5cae360f 100644 --- a/drivers/phy/marvell/phy-berlin-usb.c +++ b/drivers/phy/marvell/phy-berlin-usb.c @@ -127,7 +127,7 @@ static int phy_berlin_usb_power_on(struct phy *phy) writel(V2I_VCO_RATIO(0x5) | R_ROTATE_0 | ANA_TEST_DC_CTRL(0x5), priv->base + USB_PHY_ANALOG); writel(PHASE_FREEZE_DLY_4_CL | ACK_LENGTH_16_CL | SQ_LENGTH_12 | - DISCON_THRESHOLD_260 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) | + DISCON_THRESHOLD_270 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) | INTPL_CUR_30, priv->base + USB_PHY_RX_CTRL); writel(TX_VDD12_13 | TX_OUT_AMP(0x3), priv->base + USB_PHY_TX_CTRL1); -- cgit v1.2.1 From 324e46cee18739efbbed49b30a9100cb7bd0d35e Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 19:46:59 +0100 Subject: dt-bindings: phy: Add support for the USB3 PHY on Amlogic Meson GXL SoCs Amlogic Meson GXL SoCs use a dwc3 controller with two (GXM - a variant for GXL, has three) USB2 ports. The first USB2 port supports host and peripheral (also called "device") mode. While the dwc3 controller has no USB3 port enabled we still need the USB3 PHY to be initialized. Otherwise high-speed USB transfers (for example with a USB flash drive) may time out (most often seen on boards with mainline u-boot, where the bootloader does not initialize the USB3 PHY registers). Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Kishon Vijay Abraham I --- .../devicetree/bindings/phy/meson-gxl-usb3-phy.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt diff --git a/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt b/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt new file mode 100644 index 000000000000..114947e1de3d --- /dev/null +++ b/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt @@ -0,0 +1,31 @@ +* Amlogic Meson GXL and GXM USB3 PHY and OTG detection binding + +Required properties: +- compatible: Should be "amlogic,meson-gxl-usb3-phy" +- #phys-cells: must be 0 (see phy-bindings.txt in this directory) +- reg: The base address and length of the registers +- interrupts: the interrupt specifier for the OTG detection +- clocks: phandles to the clocks for + - the USB3 PHY + - and peripheral mode/OTG detection +- clock-names: must contain "phy" and "peripheral" +- resets: phandle to the reset lines for: + - the USB3 PHY and + - peripheral mode/OTG detection +- reset-names: must contain "phy" and "peripheral" + +Optional properties: +- phy-supply: see phy-bindings.txt in this directory + + +Example: + usb3_phy0: phy@78080 { + compatible = "amlogic,meson-gxl-usb3-phy"; + #phy-cells = <0>; + reg = <0x0 0x78080 0x0 0x20>; + interrupts = ; + clocks = <&clkc CLKID_USB_OTG>, <&clkc_AO CLKID_AO_CEC_32K>; + clock-names = "phy", "peripheral"; + resets = <&reset RESET_USB_OTG>, <&reset RESET_USB_OTG>; + reset-names = "phy", "peripheral"; + }; -- cgit v1.2.1 From 115de9fd682ccdc6b7c3142287339dbada7a7807 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 19:47:00 +0100 Subject: phy: amlogic: add USB3 PHY support for Meson GXL and GXM This adds a new driver for the USB3 PHY found on Meson GXL and GXM SoCs (both SoCs are using the same USB PHY register layout). Unfortunately there is no documentation for this PHY in the public S905X datasheet (published for example by Khadas). What we know so far about this PHY: - even though the Meson GXL and GXM SoCs do not expose an USB3 port (the dwc3 controller only has USB2 ports enabled) we need to initialize the USB3 PHY (specifically USB_R1_U3H_FLADJ_30MHZ_REG_MASK). Without this initialization high-speed USB devices (especially USB hard disks and thumb drives, slower devices like mice do not seem to be affected) - on some boards the USB3 PHY starts in "device mode" - we want to bring it into a known state (by switching it to host mode for now). - it is responsible for the OTG detection and for switching the first USB2 PHY between host and peripheral (aka device) mode. an interrupt can be used to detect changes between host and device mode. There are five inputs to this register area: - the clock and reset line for the USB3 PHY itself - the clock and reset line for the peripheral mode and OTG detection logic (on the GXL and GXM SoCs these are the same clock and reset line as for the USB3 PHY itself, but Amlogic sees this as two different components - even though they share the same register space - so they have to be passed individually to allow specifying different inputs on other SoCs if needed) - the interrupt for the OTG detection logic The whole OTG detection logic is not implemented yet. Signed-off-by: Martin Blumenstingl Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/Kconfig | 12 ++ drivers/phy/amlogic/Makefile | 1 + drivers/phy/amlogic/phy-meson-gxl-usb3.c | 282 +++++++++++++++++++++++++++++++ 3 files changed, 295 insertions(+) create mode 100644 drivers/phy/amlogic/phy-meson-gxl-usb3.c diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index ef3625cd25bb..23fe1cda2f70 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -24,3 +24,15 @@ config PHY_MESON_GXL_USB2 Enable this to support the Meson USB2 PHYs found in Meson GXL and GXM SoCs. If unsure, say N. + +config PHY_MESON_GXL_USB3 + tristate "Meson GXL and GXM USB3 PHY drivers" + default ARCH_MESON + depends on OF && (ARCH_MESON || COMPILE_TEST) + depends on USB_SUPPORT + select GENERIC_PHY + select REGMAP_MMIO + help + Enable this to support the Meson USB3 PHY and OTG detection + IP block found in Meson GXL and GXM SoCs. + If unsure, say N. diff --git a/drivers/phy/amlogic/Makefile b/drivers/phy/amlogic/Makefile index cfdc98715c30..4fd8848c194d 100644 --- a/drivers/phy/amlogic/Makefile +++ b/drivers/phy/amlogic/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_PHY_MESON8B_USB2) += phy-meson8b-usb2.o obj-$(CONFIG_PHY_MESON_GXL_USB2) += phy-meson-gxl-usb2.o +obj-$(CONFIG_PHY_MESON_GXL_USB3) += phy-meson-gxl-usb3.o diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb3.c b/drivers/phy/amlogic/phy-meson-gxl-usb3.c new file mode 100644 index 000000000000..d37d94ddf9c0 --- /dev/null +++ b/drivers/phy/amlogic/phy-meson-gxl-usb3.c @@ -0,0 +1,282 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Meson GXL USB3 PHY and OTG mode detection driver + * + * Copyright (C) 2018 Martin Blumenstingl + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define USB_R0 0x00 + #define USB_R0_P30_FSEL_MASK GENMASK(5, 0) + #define USB_R0_P30_PHY_RESET BIT(6) + #define USB_R0_P30_TEST_POWERDOWN_HSP BIT(7) + #define USB_R0_P30_TEST_POWERDOWN_SSP BIT(8) + #define USB_R0_P30_ACJT_LEVEL_MASK GENMASK(13, 9) + #define USB_R0_P30_TX_BOOST_LEVEL_MASK GENMASK(16, 14) + #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) + #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) + #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) + #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) + #define USB_R0_U2D_ACT BIT(31) + +#define USB_R1 0x04 + #define USB_R1_U3H_BIGENDIAN_GS BIT(0) + #define USB_R1_U3H_PME_ENABLE BIT(1) + #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(6, 2) + #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(11, 7) + #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(15, 12) + #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) + #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) + #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) + #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) + #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) + +#define USB_R2 0x08 + #define USB_R2_P30_CR_DATA_IN_MASK GENMASK(15, 0) + #define USB_R2_P30_CR_READ BIT(16) + #define USB_R2_P30_CR_WRITE BIT(17) + #define USB_R2_P30_CR_CAP_ADDR BIT(18) + #define USB_R2_P30_CR_CAP_DATA BIT(19) + #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) + #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) + +#define USB_R3 0x0c + #define USB_R3_P30_SSC_ENABLE BIT(0) + #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) + #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) + #define USB_R3_P30_REF_SSP_EN BIT(13) + #define USB_R3_P30_LOS_BIAS_MASK GENMASK(18, 16) + #define USB_R3_P30_LOS_LEVEL_MASK GENMASK(23, 19) + #define USB_R3_P30_MPLL_MULTIPLIER_MASK GENMASK(30, 24) + +#define USB_R4 0x10 + #define USB_R4_P21_PORT_RESET_0 BIT(0) + #define USB_R4_P21_SLEEP_M0 BIT(1) + #define USB_R4_MEM_PD_MASK GENMASK(3, 2) + #define USB_R4_P21_ONLY BIT(4) + +#define USB_R5 0x14 + #define USB_R5_ID_DIG_SYNC BIT(0) + #define USB_R5_ID_DIG_REG BIT(1) + #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) + #define USB_R5_ID_DIG_EN_0 BIT(4) + #define USB_R5_ID_DIG_EN_1 BIT(5) + #define USB_R5_ID_DIG_CURR BIT(6) + #define USB_R5_ID_DIG_IRQ BIT(7) + #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) + #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) + +/* read-only register */ +#define USB_R6 0x18 + #define USB_R6_P30_CR_DATA_OUT_MASK GENMASK(15, 0) + #define USB_R6_P30_CR_ACK BIT(16) + +struct phy_meson_gxl_usb3_priv { + struct regmap *regmap; + enum phy_mode mode; + struct clk *clk_phy; + struct clk *clk_peripheral; + struct reset_control *reset; +}; + +static const struct regmap_config phy_meson_gxl_usb3_regmap_conf = { + .reg_bits = 8, + .val_bits = 32, + .reg_stride = 4, + .max_register = USB_R6, +}; + +static int phy_meson_gxl_usb3_power_on(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, + USB_R5_ID_DIG_EN_0); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, + USB_R5_ID_DIG_EN_1); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_TH_MASK, + FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); + + return 0; +} + +static int phy_meson_gxl_usb3_power_off(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, 0); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, 0); + + return 0; +} + +static int phy_meson_gxl_usb3_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + switch (mode) { + case PHY_MODE_USB_HOST: + regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, 0); + regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, + 0); + break; + + case PHY_MODE_USB_DEVICE: + regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, + USB_R0_U2D_ACT); + regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, + USB_R4_P21_SLEEP_M0); + break; + + default: + dev_err(&phy->dev, "unsupported PHY mode %d\n", mode); + return -EINVAL; + } + + priv->mode = mode; + + return 0; +} + +static int phy_meson_gxl_usb3_init(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = reset_control_reset(priv->reset); + if (ret) + goto err; + + ret = clk_prepare_enable(priv->clk_phy); + if (ret) + goto err; + + ret = clk_prepare_enable(priv->clk_peripheral); + if (ret) + goto err_disable_clk_phy; + + ret = phy_meson_gxl_usb3_set_mode(phy, priv->mode); + if (ret) + goto err_disable_clk_peripheral; + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_FLADJ_30MHZ_REG_MASK, + FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); + + return 0; + +err_disable_clk_peripheral: + clk_disable_unprepare(priv->clk_peripheral); +err_disable_clk_phy: + clk_disable_unprepare(priv->clk_phy); +err: + return ret; +} + +static int phy_meson_gxl_usb3_exit(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + clk_disable_unprepare(priv->clk_peripheral); + clk_disable_unprepare(priv->clk_phy); + + return 0; +} + +static const struct phy_ops phy_meson_gxl_usb3_ops = { + .power_on = phy_meson_gxl_usb3_power_on, + .power_off = phy_meson_gxl_usb3_power_off, + .set_mode = phy_meson_gxl_usb3_set_mode, + .init = phy_meson_gxl_usb3_init, + .exit = phy_meson_gxl_usb3_exit, + .owner = THIS_MODULE, +}; + +static int phy_meson_gxl_usb3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct phy_meson_gxl_usb3_priv *priv; + struct resource *res; + struct phy *phy; + struct phy_provider *phy_provider; + void __iomem *base; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + priv->regmap = devm_regmap_init_mmio(dev, base, + &phy_meson_gxl_usb3_regmap_conf); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + + priv->clk_phy = devm_clk_get(dev, "phy"); + if (IS_ERR(priv->clk_phy)) + return PTR_ERR(priv->clk_phy); + + priv->clk_peripheral = devm_clk_get(dev, "peripheral"); + if (IS_ERR(priv->clk_peripheral)) + return PTR_ERR(priv->clk_peripheral); + + priv->reset = devm_reset_control_array_get_shared(dev); + if (IS_ERR(priv->reset)) + return PTR_ERR(priv->reset); + + /* + * default to host mode as hardware defaults and/or boot-loader + * behavior can result in this PHY starting up in device mode. this + * default and the initialization in phy_meson_gxl_usb3_init ensure + * that we reproducibly start in a known mode on all devices. + */ + priv->mode = PHY_MODE_USB_HOST; + + phy = devm_phy_create(dev, np, &phy_meson_gxl_usb3_ops); + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to create PHY\n"); + + return ret; + } + + phy_set_drvdata(phy, priv); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id phy_meson_gxl_usb3_of_match[] = { + { .compatible = "amlogic,meson-gxl-usb3-phy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, phy_meson_gxl_usb3_of_match); + +static struct platform_driver phy_meson_gxl_usb3_driver = { + .probe = phy_meson_gxl_usb3_probe, + .driver = { + .name = "phy-meson-gxl-usb3", + .of_match_table = phy_meson_gxl_usb3_of_match, + }, +}; +module_platform_driver(phy_meson_gxl_usb3_driver); + +MODULE_AUTHOR("Martin Blumenstingl "); +MODULE_DESCRIPTION("Meson GXL USB3 PHY and OTG detection driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From bb0e500bedb8aaab986878aa90b99582d201576c Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 6 Mar 2018 20:18:49 +0900 Subject: phy: add 'depends on HAS_IOMEM' to fix unmet dependency These configs select MFD_SYSCON, but do not depend on HAS_IOMEM. Compile testing on architecture without HAS_IOMEM causes "unmet direct dependencies" in Kconfig phase. Detected by "make ARCH=score allyesconfig". Signed-off-by: Masahiro Yamada Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 1 + drivers/phy/ralink/Kconfig | 1 + drivers/phy/rockchip/Kconfig | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index d9afe2b12827..5458e6c9b230 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -4,6 +4,7 @@ config PHY_HI6220_USB tristate "hi6220 USB PHY support" depends on (ARCH_HISI && ARM64) || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help diff --git a/drivers/phy/ralink/Kconfig b/drivers/phy/ralink/Kconfig index b17635b407bc..14fd219535ef 100644 --- a/drivers/phy/ralink/Kconfig +++ b/drivers/phy/ralink/Kconfig @@ -4,6 +4,7 @@ config PHY_RALINK_USB tristate "Ralink USB PHY driver" depends on RALINK || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig index f5325b2b679e..0e15119ddfc6 100644 --- a/drivers/phy/rockchip/Kconfig +++ b/drivers/phy/rockchip/Kconfig @@ -29,6 +29,7 @@ config PHY_ROCKCHIP_INNO_USB2 config PHY_ROCKCHIP_PCIE tristate "Rockchip PCIe PHY Driver" depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help -- cgit v1.2.1 From 194303d60b68a8038979560e5f4ca493bbb3cf37 Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Fri, 2 Mar 2018 15:56:24 +0100 Subject: dt-bindings: phy: add support for STM32 USB PHY Controller (USBPHYC) This patch adds the device tree bindings description for STM32 USBPHYC (USB PHY Controller). Signed-off-by: Amelie Delaunay Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../devicetree/bindings/phy/phy-stm32-usbphyc.txt | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt diff --git a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt new file mode 100644 index 000000000000..725ae71ae653 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt @@ -0,0 +1,73 @@ +STMicroelectronics STM32 USB HS PHY controller + +The STM32 USBPHYC block contains a dual port High Speed UTMI+ PHY and a UTMI +switch. It controls PHY configuration and status, and the UTMI+ switch that +selects either OTG or HOST controller for the second PHY port. It also sets +PLL configuration. + +USBPHYC + |_ PLL + | + |_ PHY port#1 _________________ HOST controller + | _ | + | / 1|________________| + |_ PHY port#2 ----| |________________ + | \_0| | + |_ UTMI switch_______| OTG controller + + +Phy provider node +================= + +Required properties: +- compatible: must be "st,stm32mp1-usbphyc" +- reg: address and length of the usb phy control register set +- clocks: phandle + clock specifier for the PLL phy clock +- #address-cells: number of address cells for phys sub-nodes, must be <1> +- #size-cells: number of size cells for phys sub-nodes, must be <0> + +Optional properties: +- assigned-clocks: phandle + clock specifier for the PLL phy clock +- assigned-clock-parents: the PLL phy clock parent +- resets: phandle + reset specifier + +Required nodes: one sub-node per port the controller provides. + +Phy sub-nodes +============== + +Required properties: +- reg: phy port index +- phy-supply: phandle to the regulator providing 3V3 power to the PHY, + see phy-bindings.txt in the same directory. +- vdda1v1-supply: phandle to the regulator providing 1V1 power to the PHY +- vdda1v8-supply: phandle to the regulator providing 1V8 power to the PHY +- #phy-cells: see phy-bindings.txt in the same directory, must be <0> for PHY + port#1 and must be <1> for PHY port#2, to select USB controller + + +Example: + usbphyc: usb-phy@5a006000 { + compatible = "st,stm32mp1-usbphyc"; + reg = <0x5a006000 0x1000>; + clocks = <&rcc_clk USBPHY_K>; + resets = <&rcc_rst USBPHY_R>; + #address-cells = <1>; + #size-cells = <0>; + + usbphyc_port0: usb-phy@0 { + reg = <0>; + phy-supply = <&vdd_usb>; + vdda1v1-supply = <®11>; + vdda1v8-supply = <®18> + #phy-cells = <0>; + }; + + usbphyc_port1: usb-phy@1 { + reg = <1>; + phy-supply = <&vdd_usb>; + vdda1v1-supply = <®11>; + vdda1v8-supply = <®18> + #phy-cells = <1>; + }; + }; -- cgit v1.2.1 From 94c358da3a0545205c6c6a50ae26141f1c73acfa Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Fri, 2 Mar 2018 15:56:25 +0100 Subject: phy: stm32: add support for STM32 USB PHY Controller (USBPHYC) This patch adds phy transceiver driver for STM32 USB PHY Controller (USBPHYC) that provides dual port High-Speed phy for OTG (single port) and EHCI/OHCI host controller (two ports). One port of the phy is shared between the two USB controllers through a UTMI+ switch. [fengguang.wu@intel.com: Make stm32_usbphyc_get_pll_params() to be static] Signed-off-by: Fengguang Wu Signed-off-by: Amelie Delaunay Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/st/Kconfig | 14 ++ drivers/phy/st/Makefile | 1 + drivers/phy/st/phy-stm32-usbphyc.c | 461 +++++++++++++++++++++++++++++++++++++ 3 files changed, 476 insertions(+) create mode 100644 drivers/phy/st/phy-stm32-usbphyc.c diff --git a/drivers/phy/st/Kconfig b/drivers/phy/st/Kconfig index 0814d3f87ec6..609719bdfa50 100644 --- a/drivers/phy/st/Kconfig +++ b/drivers/phy/st/Kconfig @@ -31,3 +31,17 @@ config PHY_STIH407_USB help Enable this support to enable the picoPHY device used by USB2 and USB3 controllers on STMicroelectronics STiH407 SoC families. + +config PHY_STM32_USBPHYC + tristate "STMicroelectronics STM32 USB HS PHY Controller driver" + depends on ARCH_STM32 || COMPILE_TEST + select GENERIC_PHY + help + Enable this to support the High-Speed USB transceivers that are part + of some STMicroelectronics STM32 SoCs. + + This driver controls the entire USB PHY block: the USB PHY controller + (USBPHYC) and the two 8-bit wide UTMI+ interfaces. First interface is + used by an HS USB Host controller, and the second one is shared + between an HS USB OTG controller and an HS USB Host controller, + selected by a USB switch. diff --git a/drivers/phy/st/Makefile b/drivers/phy/st/Makefile index e2adfe2166d2..c0091ad1fd48 100644 --- a/drivers/phy/st/Makefile +++ b/drivers/phy/st/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_PHY_MIPHY28LP) += phy-miphy28lp.o obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o +obj-$(CONFIG_PHY_STM32_USBPHYC) += phy-stm32-usbphyc.o diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c new file mode 100644 index 000000000000..bc4e78a19c91 --- /dev/null +++ b/drivers/phy/st/phy-stm32-usbphyc.c @@ -0,0 +1,461 @@ +// SPDX-Licence-Identifier: GPL-2.0 +/* + * STMicroelectronics STM32 USB PHY Controller driver + * + * Copyright (C) 2018 STMicroelectronics + * Author(s): Amelie Delaunay . + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define STM32_USBPHYC_PLL 0x0 +#define STM32_USBPHYC_MISC 0x8 +#define STM32_USBPHYC_VERSION 0x3F4 + +/* STM32_USBPHYC_PLL bit fields */ +#define PLLNDIV GENMASK(6, 0) +#define PLLFRACIN GENMASK(25, 10) +#define PLLEN BIT(26) +#define PLLSTRB BIT(27) +#define PLLSTRBYP BIT(28) +#define PLLFRACCTL BIT(29) +#define PLLDITHEN0 BIT(30) +#define PLLDITHEN1 BIT(31) + +/* STM32_USBPHYC_MISC bit fields */ +#define SWITHOST BIT(0) + +/* STM32_USBPHYC_VERSION bit fields */ +#define MINREV GENMASK(3, 0) +#define MAJREV GENMASK(7, 4) + +static const char * const supplies_names[] = { + "vdda1v1", /* 1V1 */ + "vdda1v8", /* 1V8 */ +}; + +#define NUM_SUPPLIES ARRAY_SIZE(supplies_names) + +#define PLL_LOCK_TIME_US 100 +#define PLL_PWR_DOWN_TIME_US 5 +#define PLL_FVCO_MHZ 2880 +#define PLL_INFF_MIN_RATE_HZ 19200000 +#define PLL_INFF_MAX_RATE_HZ 38400000 +#define HZ_PER_MHZ 1000000L + +struct pll_params { + u8 ndiv; + u16 frac; +}; + +struct stm32_usbphyc_phy { + struct phy *phy; + struct stm32_usbphyc *usbphyc; + struct regulator_bulk_data supplies[NUM_SUPPLIES]; + u32 index; + bool active; +}; + +struct stm32_usbphyc { + struct device *dev; + void __iomem *base; + struct clk *clk; + struct reset_control *rst; + struct stm32_usbphyc_phy **phys; + int nphys; + int switch_setup; + bool pll_enabled; +}; + +static inline void stm32_usbphyc_set_bits(void __iomem *reg, u32 bits) +{ + writel_relaxed(readl_relaxed(reg) | bits, reg); +} + +static inline void stm32_usbphyc_clr_bits(void __iomem *reg, u32 bits) +{ + writel_relaxed(readl_relaxed(reg) & ~bits, reg); +} + +static void stm32_usbphyc_get_pll_params(u32 clk_rate, struct pll_params *pll_params) +{ + unsigned long long fvco, ndiv, frac; + + /* _ + * | FVCO = INFF*2*(NDIV + FRACT/2^16) when DITHER_DISABLE[1] = 1 + * | FVCO = 2880MHz + * < + * | NDIV = integer part of input bits to set the LDF + * |_FRACT = fractional part of input bits to set the LDF + * => PLLNDIV = integer part of (FVCO / (INFF*2)) + * => PLLFRACIN = fractional part of(FVCO / INFF*2) * 2^16 + * <=> PLLFRACIN = ((FVCO / (INFF*2)) - PLLNDIV) * 2^16 + */ + fvco = (unsigned long long)PLL_FVCO_MHZ * HZ_PER_MHZ; + + ndiv = fvco; + do_div(ndiv, (clk_rate * 2)); + pll_params->ndiv = (u8)ndiv; + + frac = fvco * (1 << 16); + do_div(frac, (clk_rate * 2)); + frac = frac - (ndiv * (1 << 16)); + pll_params->frac = (u16)frac; +} + +static int stm32_usbphyc_pll_init(struct stm32_usbphyc *usbphyc) +{ + struct pll_params pll_params; + u32 clk_rate = clk_get_rate(usbphyc->clk); + u32 ndiv, frac; + u32 usbphyc_pll; + + if ((clk_rate < PLL_INFF_MIN_RATE_HZ) || + (clk_rate > PLL_INFF_MAX_RATE_HZ)) { + dev_err(usbphyc->dev, "input clk freq (%dHz) out of range\n", + clk_rate); + return -EINVAL; + } + + stm32_usbphyc_get_pll_params(clk_rate, &pll_params); + ndiv = FIELD_PREP(PLLNDIV, pll_params.ndiv); + frac = FIELD_PREP(PLLFRACIN, pll_params.frac); + + usbphyc_pll = PLLDITHEN1 | PLLDITHEN0 | PLLSTRBYP | ndiv; + + if (pll_params.frac) + usbphyc_pll |= PLLFRACCTL | frac; + + writel_relaxed(usbphyc_pll, usbphyc->base + STM32_USBPHYC_PLL); + + dev_dbg(usbphyc->dev, "input clk freq=%dHz, ndiv=%lu, frac=%lu\n", + clk_rate, FIELD_GET(PLLNDIV, usbphyc_pll), + FIELD_GET(PLLFRACIN, usbphyc_pll)); + + return 0; +} + +static bool stm32_usbphyc_has_one_phy_active(struct stm32_usbphyc *usbphyc) +{ + int i; + + for (i = 0; i < usbphyc->nphys; i++) + if (usbphyc->phys[i]->active) + return true; + + return false; +} + +static int stm32_usbphyc_pll_enable(struct stm32_usbphyc *usbphyc) +{ + void __iomem *pll_reg = usbphyc->base + STM32_USBPHYC_PLL; + bool pllen = (readl_relaxed(pll_reg) & PLLEN); + int ret; + + /* Check if one phy port has already configured the pll */ + if (pllen && stm32_usbphyc_has_one_phy_active(usbphyc)) + return 0; + + if (pllen) { + stm32_usbphyc_clr_bits(pll_reg, PLLEN); + /* Wait for minimum width of powerdown pulse (ENABLE = Low) */ + udelay(PLL_PWR_DOWN_TIME_US); + } + + ret = stm32_usbphyc_pll_init(usbphyc); + if (ret) + return ret; + + stm32_usbphyc_set_bits(pll_reg, PLLEN); + + /* Wait for maximum lock time */ + udelay(PLL_LOCK_TIME_US); + + if (!(readl_relaxed(pll_reg) & PLLEN)) { + dev_err(usbphyc->dev, "PLLEN not set\n"); + return -EIO; + } + + return 0; +} + +static int stm32_usbphyc_pll_disable(struct stm32_usbphyc *usbphyc) +{ + void __iomem *pll_reg = usbphyc->base + STM32_USBPHYC_PLL; + + /* Check if other phy port active */ + if (stm32_usbphyc_has_one_phy_active(usbphyc)) + return 0; + + stm32_usbphyc_clr_bits(pll_reg, PLLEN); + /* Wait for minimum width of powerdown pulse (ENABLE = Low) */ + udelay(PLL_PWR_DOWN_TIME_US); + + if (readl_relaxed(pll_reg) & PLLEN) { + dev_err(usbphyc->dev, "PLL not reset\n"); + return -EIO; + } + + return 0; +} + +static int stm32_usbphyc_phy_init(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + struct stm32_usbphyc *usbphyc = usbphyc_phy->usbphyc; + int ret; + + ret = stm32_usbphyc_pll_enable(usbphyc); + if (ret) + return ret; + + usbphyc_phy->active = true; + + return 0; +} + +static int stm32_usbphyc_phy_exit(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + struct stm32_usbphyc *usbphyc = usbphyc_phy->usbphyc; + + usbphyc_phy->active = false; + + return stm32_usbphyc_pll_disable(usbphyc); +} + +static int stm32_usbphyc_phy_power_on(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + return regulator_bulk_enable(NUM_SUPPLIES, usbphyc_phy->supplies); +} + +static int stm32_usbphyc_phy_power_off(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + return regulator_bulk_disable(NUM_SUPPLIES, usbphyc_phy->supplies); +} + +static const struct phy_ops stm32_usbphyc_phy_ops = { + .init = stm32_usbphyc_phy_init, + .exit = stm32_usbphyc_phy_exit, + .power_on = stm32_usbphyc_phy_power_on, + .power_off = stm32_usbphyc_phy_power_off, + .owner = THIS_MODULE, +}; + +static void stm32_usbphyc_switch_setup(struct stm32_usbphyc *usbphyc, + u32 utmi_switch) +{ + if (!utmi_switch) + stm32_usbphyc_clr_bits(usbphyc->base + STM32_USBPHYC_MISC, + SWITHOST); + else + stm32_usbphyc_set_bits(usbphyc->base + STM32_USBPHYC_MISC, + SWITHOST); + usbphyc->switch_setup = utmi_switch; +} + +static struct phy *stm32_usbphyc_of_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct stm32_usbphyc *usbphyc = dev_get_drvdata(dev); + struct stm32_usbphyc_phy *usbphyc_phy = NULL; + struct device_node *phynode = args->np; + + int port = 0; + + for (port = 0; port < usbphyc->nphys; port++) { + if (phynode == usbphyc->phys[port]->phy->dev.of_node) { + usbphyc_phy = usbphyc->phys[port]; + break; + } + } + if (!usbphyc_phy) { + dev_err(dev, "failed to find phy\n"); + return ERR_PTR(-EINVAL); + } + + if (((usbphyc_phy->index == 0) && (args->args_count != 0)) || + ((usbphyc_phy->index == 1) && (args->args_count != 1))) { + dev_err(dev, "invalid number of cells for phy port%d\n", + usbphyc_phy->index); + return ERR_PTR(-EINVAL); + } + + /* Configure the UTMI switch for PHY port#2 */ + if (usbphyc_phy->index == 1) { + if (usbphyc->switch_setup < 0) { + stm32_usbphyc_switch_setup(usbphyc, args->args[0]); + } else { + if (args->args[0] != usbphyc->switch_setup) { + dev_err(dev, "phy port1 already used\n"); + return ERR_PTR(-EBUSY); + } + } + } + + return usbphyc_phy->phy; +} + +static int stm32_usbphyc_probe(struct platform_device *pdev) +{ + struct stm32_usbphyc *usbphyc; + struct device *dev = &pdev->dev; + struct device_node *child, *np = dev->of_node; + struct resource *res; + struct phy_provider *phy_provider; + u32 version; + int ret, port = 0; + + usbphyc = devm_kzalloc(dev, sizeof(*usbphyc), GFP_KERNEL); + if (!usbphyc) + return -ENOMEM; + usbphyc->dev = dev; + dev_set_drvdata(dev, usbphyc); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + usbphyc->base = devm_ioremap_resource(dev, res); + if (IS_ERR(usbphyc->base)) + return PTR_ERR(usbphyc->base); + + usbphyc->clk = devm_clk_get(dev, 0); + if (IS_ERR(usbphyc->clk)) { + ret = PTR_ERR(usbphyc->clk); + dev_err(dev, "clk get failed: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(usbphyc->clk); + if (ret) { + dev_err(dev, "clk enable failed: %d\n", ret); + return ret; + } + + usbphyc->rst = devm_reset_control_get(dev, 0); + if (!IS_ERR(usbphyc->rst)) { + reset_control_assert(usbphyc->rst); + udelay(2); + reset_control_deassert(usbphyc->rst); + } + + usbphyc->switch_setup = -EINVAL; + usbphyc->nphys = of_get_child_count(np); + usbphyc->phys = devm_kcalloc(dev, usbphyc->nphys, + sizeof(*usbphyc->phys), GFP_KERNEL); + if (!usbphyc->phys) { + ret = -ENOMEM; + goto clk_disable; + } + + for_each_child_of_node(np, child) { + struct stm32_usbphyc_phy *usbphyc_phy; + struct phy *phy; + u32 index; + int i; + + phy = devm_phy_create(dev, child, &stm32_usbphyc_phy_ops); + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, + "failed to create phy%d: %d\n", i, ret); + goto put_child; + } + + usbphyc_phy = devm_kzalloc(dev, sizeof(*usbphyc_phy), + GFP_KERNEL); + if (!usbphyc_phy) { + ret = -ENOMEM; + goto put_child; + } + + for (i = 0; i < NUM_SUPPLIES; i++) + usbphyc_phy->supplies[i].supply = supplies_names[i]; + + ret = devm_regulator_bulk_get(&phy->dev, NUM_SUPPLIES, + usbphyc_phy->supplies); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(&phy->dev, + "failed to get regulators: %d\n", ret); + goto put_child; + } + + ret = of_property_read_u32(child, "reg", &index); + if (ret || index > usbphyc->nphys) { + dev_err(&phy->dev, "invalid reg property: %d\n", ret); + goto put_child; + } + + usbphyc->phys[port] = usbphyc_phy; + phy_set_bus_width(phy, 8); + phy_set_drvdata(phy, usbphyc_phy); + + usbphyc->phys[port]->phy = phy; + usbphyc->phys[port]->usbphyc = usbphyc; + usbphyc->phys[port]->index = index; + usbphyc->phys[port]->active = false; + + port++; + } + + phy_provider = devm_of_phy_provider_register(dev, + stm32_usbphyc_of_xlate); + if (IS_ERR(phy_provider)) { + ret = PTR_ERR(phy_provider); + dev_err(dev, "failed to register phy provider: %d\n", ret); + goto clk_disable; + } + + version = readl_relaxed(usbphyc->base + STM32_USBPHYC_VERSION); + dev_info(dev, "registered rev:%lu.%lu\n", + FIELD_GET(MAJREV, version), FIELD_GET(MINREV, version)); + + return 0; + +put_child: + of_node_put(child); +clk_disable: + clk_disable_unprepare(usbphyc->clk); + + return ret; +} + +static int stm32_usbphyc_remove(struct platform_device *pdev) +{ + struct stm32_usbphyc *usbphyc = dev_get_drvdata(&pdev->dev); + + clk_disable_unprepare(usbphyc->clk); + + return 0; +} + +static const struct of_device_id stm32_usbphyc_of_match[] = { + { .compatible = "st,stm32mp1-usbphyc", }, + { }, +}; +MODULE_DEVICE_TABLE(of, stm32_usbphyc_of_match); + +static struct platform_driver stm32_usbphyc_driver = { + .probe = stm32_usbphyc_probe, + .remove = stm32_usbphyc_remove, + .driver = { + .of_match_table = stm32_usbphyc_of_match, + .name = "stm32-usbphyc", + } +}; +module_platform_driver(stm32_usbphyc_driver); + +MODULE_DESCRIPTION("STMicroelectronics STM32 USBPHYC driver"); +MODULE_AUTHOR("Amelie Delaunay "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From b1ba68f33c0caa937032615833e3321d03d877b4 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:43 +0900 Subject: dt-bindings: rcar-gen3-phy-usb2: Add bindings for r8a77965 This patch adds support for r8a77965 (R-Car M3-N). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt index 99b651b33110..dbd137c079e2 100644 --- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt @@ -8,6 +8,8 @@ Required properties: SoC. "renesas,usb2-phy-r8a7796" if the device is a part of an R8A7796 SoC. + "renesas,usb2-phy-r8a77965" if the device is a part of an + R8A77965 SoC. "renesas,usb2-phy-r8a77995" if the device is a part of an R8A77995 SoC. "renesas,rcar-gen3-usb2-phy" for a generic R-Car Gen3 compatible device. -- cgit v1.2.1 From 44e42df6b91813c9d271044e35a7642402abf98c Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:44 +0900 Subject: phy: rcar-gen3-usb2: Add support for r8a77965 This patch adds support for r8a77965 (R-Car M3-N). This SoC has dedicated pins. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/renesas/phy-rcar-gen3-usb2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 9c90e7d67e0a..fb8f05e39cf7 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -396,6 +396,10 @@ static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { .compatible = "renesas,usb2-phy-r8a7796", .data = (void *)RCAR_GEN3_PHY_HAS_DEDICATED_PINS, }, + { + .compatible = "renesas,usb2-phy-r8a77965", + .data = (void *)RCAR_GEN3_PHY_HAS_DEDICATED_PINS, + }, { .compatible = "renesas,rcar-gen3-usb2-phy", }, -- cgit v1.2.1 From 0147b57e731f128d68469d8032d53c0da89c8aae Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:45 +0900 Subject: dt-bindings: rcar-gen3-phy-usb3: Add bindings for r8a77965 This patch adds bindings for r8a77965 (R-Car M3-N). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt index f94cea48f6b1..47dd296ecead 100644 --- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt @@ -11,6 +11,8 @@ Required properties: SoC. "renesas,r8a7796-usb3-phy" if the device is a part of an R8A7796 SoC. + "renesas,r8a77965-usb3-phy" if the device is a part of an + R8A77965 SoC. "renesas,rcar-gen3-usb3-phy" for a generic R-Car Gen3 compatible device. -- cgit v1.2.1 From d581ba62f34be6a190116523521875a021109b02 Mon Sep 17 00:00:00 2001 From: Pengcheng Li Date: Fri, 9 Mar 2018 22:47:00 +0800 Subject: dt-bindings: add bindings doc for HiSilicon INNO USB2 PHY It adds device tree bindings document for HiSilicon INNO USB2 PHY. Signed-off-by: Pengcheng Li Signed-off-by: Jiancheng Xue Signed-off-by: Shawn Guo Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../devicetree/bindings/phy/phy-hisi-inno-usb2.txt | 71 ++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt diff --git a/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt new file mode 100644 index 000000000000..0d70c8341095 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt @@ -0,0 +1,71 @@ +Device tree bindings for HiSilicon INNO USB2 PHY + +Required properties: +- compatible: Should be one of the following strings: + "hisilicon,inno-usb2-phy", + "hisilicon,hi3798cv200-usb2-phy". +- reg: Should be the address space for PHY configuration register in peripheral + controller, e.g. PERI_USB0 for USB 2.0 PHY01 on Hi3798CV200 SoC. +- clocks: The phandle and clock specifier pair for INNO USB2 PHY device + reference clock. +- resets: The phandle and reset specifier pair for INNO USB2 PHY device reset + signal. +- #address-cells: Must be 1. +- #size-cells: Must be 0. + +The INNO USB2 PHY device should be a child node of peripheral controller that +contains the PHY configuration register, and each device suppports up to 2 PHY +ports which are represented as child nodes of INNO USB2 PHY device. + +Required properties for PHY port node: +- reg: The PHY port instance number. +- #phy-cells: Defined by generic PHY bindings. Must be 0. +- resets: The phandle and reset specifier pair for PHY port reset signal. + +Refer to phy/phy-bindings.txt for the generic PHY binding properties + +Example: + +perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x8a20000 0x1000>; + + usb2_phy1: usb2-phy@120 { + compatible = "hisilicon,hi3798cv200-usb2-phy"; + reg = <0x120 0x4>; + clocks = <&crg HISTB_USB2_PHY1_REF_CLK>; + resets = <&crg 0xbc 4>; + #address-cells = <1>; + #size-cells = <0>; + + usb2_phy1_port0: phy@0 { + reg = <0>; + #phy-cells = <0>; + resets = <&crg 0xbc 8>; + }; + + usb2_phy1_port1: phy@1 { + reg = <1>; + #phy-cells = <0>; + resets = <&crg 0xbc 9>; + }; + }; + + usb2_phy2: usb2-phy@124 { + compatible = "hisilicon,hi3798cv200-usb2-phy"; + reg = <0x124 0x4>; + clocks = <&crg HISTB_USB2_PHY2_REF_CLK>; + resets = <&crg 0xbc 6>; + #address-cells = <1>; + #size-cells = <0>; + + usb2_phy2_port0: phy@0 { + reg = <0>; + #phy-cells = <0>; + resets = <&crg 0xbc 10>; + }; + }; +}; -- cgit v1.2.1 From ba8b0ee81fbbc249e60f84bf097bd56e8047c742 Mon Sep 17 00:00:00 2001 From: Pengcheng Li Date: Fri, 9 Mar 2018 22:47:01 +0800 Subject: phy: add inno-usb2-phy driver for hi3798cv200 SoC It adds inno-usb2-phy driver for hi3798cv200 SoC USB 2.0 support. One inno-usb2-phy device can support up to two PHY ports. While there is device level reference clock and power reset to be controlled, each PHY port has its own utmi reset that needs to assert/de-assert as needed. Hi3798cv200 needs to access PHY port0 register via particular peripheral syscon controller register to control PHY, like turning on PHY clock. Signed-off-by: Pengcheng Li Signed-off-by: Jiancheng Xue Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 10 ++ drivers/phy/hisilicon/Makefile | 1 + drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 197 +++++++++++++++++++++++++++++ 3 files changed, 208 insertions(+) create mode 100644 drivers/phy/hisilicon/phy-hisi-inno-usb2.c diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index 5458e6c9b230..b40ee54a1a50 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -21,6 +21,16 @@ config PHY_HISTB_COMBPHY Enable this to support the HISILICON STB SoCs COMBPHY. If unsure, say N. +config PHY_HISI_INNO_USB2 + tristate "HiSilicon INNO USB2 PHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST + select GENERIC_PHY + select MFD_SYSCON + help + Support for INNO USB2 PHY on HiSilicon SoCs. This Phy supports + USB 1.5Mb/s, USB 12Mb/s, USB 480Mb/s speeds. It supports one + USB host port to accept one USB device. + config PHY_HIX5HD2_SATA tristate "HIX5HD2 SATA PHY Driver" depends on ARCH_HIX5HD2 && OF && HAS_IOMEM diff --git a/drivers/phy/hisilicon/Makefile b/drivers/phy/hisilicon/Makefile index 5e8e2dfa8c37..f662a4fe18d8 100644 --- a/drivers/phy/hisilicon/Makefile +++ b/drivers/phy/hisilicon/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o obj-$(CONFIG_PHY_HISTB_COMBPHY) += phy-histb-combphy.o +obj-$(CONFIG_PHY_HISI_INNO_USB2) += phy-hisi-inno-usb2.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c new file mode 100644 index 000000000000..524381249a2b --- /dev/null +++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c @@ -0,0 +1,197 @@ +/* + * HiSilicon INNO USB2 PHY Driver. + * + * Copyright (c) 2016-2017 HiSilicon Technologies Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include + +#define INNO_PHY_PORT_NUM 2 +#define REF_CLK_STABLE_TIME 100 /* unit:us */ +#define UTMI_CLK_STABLE_TIME 200 /* unit:us */ +#define TEST_CLK_STABLE_TIME 2 /* unit:ms */ +#define PHY_CLK_STABLE_TIME 2 /* unit:ms */ +#define UTMI_RST_COMPLETE_TIME 2 /* unit:ms */ +#define POR_RST_COMPLETE_TIME 300 /* unit:us */ +#define PHY_TEST_DATA GENMASK(7, 0) +#define PHY_TEST_ADDR GENMASK(15, 8) +#define PHY_TEST_PORT GENMASK(18, 16) +#define PHY_TEST_WREN BIT(21) +#define PHY_TEST_CLK BIT(22) /* rising edge active */ +#define PHY_TEST_RST BIT(23) /* low active */ +#define PHY_CLK_ENABLE BIT(2) + +struct hisi_inno_phy_port { + struct reset_control *utmi_rst; + struct hisi_inno_phy_priv *priv; +}; + +struct hisi_inno_phy_priv { + void __iomem *mmio; + struct clk *ref_clk; + struct reset_control *por_rst; + struct hisi_inno_phy_port ports[INNO_PHY_PORT_NUM]; +}; + +static void hisi_inno_phy_write_reg(struct hisi_inno_phy_priv *priv, + u8 port, u32 addr, u32 data) +{ + void __iomem *reg = priv->mmio; + u32 val; + + val = (data & PHY_TEST_DATA) | + ((addr << 8) & PHY_TEST_ADDR) | + ((port << 16) & PHY_TEST_PORT) | + PHY_TEST_WREN | PHY_TEST_RST; + writel(val, reg); + + val |= PHY_TEST_CLK; + writel(val, reg); + + val &= ~PHY_TEST_CLK; + writel(val, reg); +} + +static void hisi_inno_phy_setup(struct hisi_inno_phy_priv *priv) +{ + /* The phy clk is controlled by the port0 register 0x06. */ + hisi_inno_phy_write_reg(priv, 0, 0x06, PHY_CLK_ENABLE); + msleep(PHY_CLK_STABLE_TIME); +} + +static int hisi_inno_phy_init(struct phy *phy) +{ + struct hisi_inno_phy_port *port = phy_get_drvdata(phy); + struct hisi_inno_phy_priv *priv = port->priv; + int ret; + + ret = clk_prepare_enable(priv->ref_clk); + if (ret) + return ret; + udelay(REF_CLK_STABLE_TIME); + + reset_control_deassert(priv->por_rst); + udelay(POR_RST_COMPLETE_TIME); + + /* Set up phy registers */ + hisi_inno_phy_setup(priv); + + reset_control_deassert(port->utmi_rst); + udelay(UTMI_RST_COMPLETE_TIME); + + return 0; +} + +static int hisi_inno_phy_exit(struct phy *phy) +{ + struct hisi_inno_phy_port *port = phy_get_drvdata(phy); + struct hisi_inno_phy_priv *priv = port->priv; + + reset_control_assert(port->utmi_rst); + reset_control_assert(priv->por_rst); + clk_disable_unprepare(priv->ref_clk); + + return 0; +} + +static const struct phy_ops hisi_inno_phy_ops = { + .init = hisi_inno_phy_init, + .exit = hisi_inno_phy_exit, + .owner = THIS_MODULE, +}; + +static int hisi_inno_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct hisi_inno_phy_priv *priv; + struct phy_provider *provider; + struct device_node *child; + struct resource *res; + int i = 0; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->mmio = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->mmio)) { + ret = PTR_ERR(priv->mmio); + return ret; + } + + priv->ref_clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->ref_clk)) + return PTR_ERR(priv->ref_clk); + + priv->por_rst = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(priv->por_rst)) + return PTR_ERR(priv->por_rst); + + for_each_child_of_node(np, child) { + struct reset_control *rst; + struct phy *phy; + + rst = of_reset_control_get_exclusive(child, NULL); + if (IS_ERR(rst)) + return PTR_ERR(rst); + priv->ports[i].utmi_rst = rst; + priv->ports[i].priv = priv; + + phy = devm_phy_create(dev, child, &hisi_inno_phy_ops); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + phy_set_bus_width(phy, 8); + phy_set_drvdata(phy, &priv->ports[i]); + i++; + + if (i > INNO_PHY_PORT_NUM) { + dev_warn(dev, "Support %d ports in maximum\n", i); + break; + } + } + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + return PTR_ERR_OR_ZERO(provider); +} + +static const struct of_device_id hisi_inno_phy_of_match[] = { + { .compatible = "hisilicon,inno-usb2-phy", }, + { .compatible = "hisilicon,hi3798cv200-usb2-phy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, hisi_inno_phy_of_match); + +static struct platform_driver hisi_inno_phy_driver = { + .probe = hisi_inno_phy_probe, + .driver = { + .name = "hisi-inno-phy", + .of_match_table = hisi_inno_phy_of_match, + } +}; +module_platform_driver(hisi_inno_phy_driver); + +MODULE_DESCRIPTION("HiSilicon INNO USB2 PHY Driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From 5d1ebbda0318b1ba55eaa1fae3fd867af17b0774 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 8 Mar 2018 18:37:50 -0800 Subject: phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4 Let's add support for the GPIO controlled USB PHY on the MDM6600 modem. It is used on some Motorola Mapphone series of phones and tablets such as Droid 4. The MDM6600 is hardwired to the first OHCI port in the Droid 4 case, and is controlled by several GPIOs. The USB PHY is integrated into the MDM6600 device it seems. We know this as we get L3 errors from omap-usb-host if trying to use the PHY before MDM6600 is configured. The GPIOs controlling MDM6600 are used to power device on and off, to configure the USB start-up mode (normal mode versus USB flashing), and they also tell the state of the MDM6600 device. The two start-up mode GPIOs are dual-purposed and used for out of band (OOB) wake-up for USB and TS 27.010 serial mux. But we need to configure the USB start-up mode first to get MDM6600 booted in the right mode to be usable in the first place. Note that the Motorola Mapphone Linux kernel tree has a "radio-ctrl" driver for modems. But it really does not control the radio at all, it just controls the modem power and start-up mode for USB. So I came to the conclusion that we're better off having this done in the USB PHY driver. For adding support for USB flashing mode, we can later on add a kernel module option for flash_mode=1 or something similar. Also note that currently there is no PM runtime support for the OHCI on omap variant SoCs. So for low(er) power idle states, currenty both ohci-platform and phy-mapphone-mdm6600 must be unloaded or unbound. For reference here is what I measured for total power consumption on an idle Droid 4 with and without USB related MDM6600 modules: idle lcd off phy-mapphone-mdm6600 ohci-platform 153mW 284mW 344mW So it seems that MDM6600 is currently not yet idling even with it's radio turned off, but that's something that is beyond the control of this USB PHY driver. This patch does get us to the point where modem data and GPS are usable with libqmi and ModemManager for example. Voice calls need more audio driver work. Cc: devicetree@vger.kernel.org Cc: Mark Rutland Cc: Marcel Partap Cc: Michael Scott Cc: Rob Herring Reviewed-by: Rob Herring Signed-off-by: Tony Lindgren Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-mapphone-mdm6600.txt | 29 ++ drivers/phy/motorola/Kconfig | 8 + drivers/phy/motorola/Makefile | 1 + drivers/phy/motorola/phy-mapphone-mdm6600.c | 542 +++++++++++++++++++++ 4 files changed, 580 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt create mode 100644 drivers/phy/motorola/phy-mapphone-mdm6600.c diff --git a/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt b/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt new file mode 100644 index 000000000000..29427d4f047a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt @@ -0,0 +1,29 @@ +Device tree binding documentation for Motorola Mapphone MDM6600 USB PHY + +Required properties: +- compatible Must be "motorola,mapphone-mdm6600" +- enable-gpios GPIO to enable the USB PHY +- power-gpios GPIO to power on the device +- reset-gpios GPIO to reset the device +- motorola,mode-gpios Two GPIOs to configure MDM6600 USB start-up mode for + normal mode versus USB flashing mode +- motorola,cmd-gpios Three GPIOs to control the power state of the MDM6600 +- motorola,status-gpios Three GPIOs to read the power state of the MDM6600 + +Example: + +usb-phy { + compatible = "motorola,mapphone-mdm6600"; + enable-gpios = <&gpio3 31 GPIO_ACTIVE_LOW>; + power-gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio2 17 GPIO_ACTIVE_HIGH>; + motorola,mode-gpios = <&gpio5 20 GPIO_ACTIVE_HIGH>, + <&gpio5 21 GPIO_ACTIVE_HIGH>; + motorola,cmd-gpios = <&gpio4 7 GPIO_ACTIVE_HIGH>, + <&gpio4 8 GPIO_ACTIVE_HIGH>, + <&gpio5 14 GPIO_ACTIVE_HIGH>; + motorola,status-gpios = <&gpio2 20 GPIO_ACTIVE_HIGH>, + <&gpio2 21 GPIO_ACTIVE_HIGH>, + <&gpio2 23 GPIO_ACTIVE_HIGH>; + #phy-cells = <0>; +}; diff --git a/drivers/phy/motorola/Kconfig b/drivers/phy/motorola/Kconfig index 6bb7d6bdf1bf..82651524ffb9 100644 --- a/drivers/phy/motorola/Kconfig +++ b/drivers/phy/motorola/Kconfig @@ -10,3 +10,11 @@ config PHY_CPCAP_USB help Enable this for USB to work on Motorola phones and tablets such as Droid 4. + +config PHY_MAPPHONE_MDM6600 + tristate "Motorola Mapphone MDM6600 modem USB PHY driver" + depends on OF && USB_SUPPORT + select GENERIC_PHY + help + Enable this for MDM6600 USB modem to work on Motorola phones + and tablets such as Droid 4. diff --git a/drivers/phy/motorola/Makefile b/drivers/phy/motorola/Makefile index b6cd618d671a..3514f985b355 100644 --- a/drivers/phy/motorola/Makefile +++ b/drivers/phy/motorola/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_PHY_CPCAP_USB) += phy-cpcap-usb.o +obj-$(CONFIG_PHY_MAPPHONE_MDM6600) += phy-mapphone-mdm6600.o diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c new file mode 100644 index 000000000000..5439dd90d0dd --- /dev/null +++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c @@ -0,0 +1,542 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Motorola Mapphone MDM6600 modem GPIO controlled USB PHY driver + * Copyright (C) 2018 Tony Lindgren + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define PHY_MDM6600_PHY_DELAY_MS 4000 /* PHY enable 2.2s to 3.5s */ +#define PHY_MDM6600_ENABLED_DELAY_MS 8000 /* 8s more total for MDM6600 */ + +enum phy_mdm6600_ctrl_lines { + PHY_MDM6600_ENABLE, /* USB PHY enable */ + PHY_MDM6600_POWER, /* Device power */ + PHY_MDM6600_RESET, /* Device reset */ + PHY_MDM6600_NR_CTRL_LINES, +}; + +enum phy_mdm6600_bootmode_lines { + PHY_MDM6600_MODE0, /* out USB mode0 and OOB wake */ + PHY_MDM6600_MODE1, /* out USB mode1, in OOB wake */ + PHY_MDM6600_NR_MODE_LINES, +}; + +enum phy_mdm6600_cmd_lines { + PHY_MDM6600_CMD0, + PHY_MDM6600_CMD1, + PHY_MDM6600_CMD2, + PHY_MDM6600_NR_CMD_LINES, +}; + +enum phy_mdm6600_status_lines { + PHY_MDM6600_STATUS0, + PHY_MDM6600_STATUS1, + PHY_MDM6600_STATUS2, + PHY_MDM6600_NR_STATUS_LINES, +}; + +/* + * MDM6600 command codes. These are based on Motorola Mapphone Linux + * kernel tree. + */ +enum phy_mdm6600_cmd { + PHY_MDM6600_CMD_BP_PANIC_ACK, + PHY_MDM6600_CMD_DATA_ONLY_BYPASS, /* Reroute USB to CPCAP PHY */ + PHY_MDM6600_CMD_FULL_BYPASS, /* Reroute USB to CPCAP PHY */ + PHY_MDM6600_CMD_NO_BYPASS, /* Request normal USB mode */ + PHY_MDM6600_CMD_BP_SHUTDOWN_REQ, /* Request device power off */ + PHY_MDM6600_CMD_BP_UNKNOWN_5, + PHY_MDM6600_CMD_BP_UNKNOWN_6, + PHY_MDM6600_CMD_UNDEFINED, +}; + +/* + * MDM6600 status codes. These are based on Motorola Mapphone Linux + * kernel tree. + */ +enum phy_mdm6600_status { + PHY_MDM6600_STATUS_PANIC, /* Seems to be really off */ + PHY_MDM6600_STATUS_PANIC_BUSY_WAIT, + PHY_MDM6600_STATUS_QC_DLOAD, + PHY_MDM6600_STATUS_RAM_DOWNLOADER, /* MDM6600 USB flashing mode */ + PHY_MDM6600_STATUS_PHONE_CODE_AWAKE, /* MDM6600 normal USB mode */ + PHY_MDM6600_STATUS_PHONE_CODE_ASLEEP, + PHY_MDM6600_STATUS_SHUTDOWN_ACK, + PHY_MDM6600_STATUS_UNDEFINED, +}; + +static const char * const +phy_mdm6600_status_name[] = { + "off", "busy", "qc_dl", "ram_dl", "awake", + "asleep", "shutdown", "undefined", +}; + +struct phy_mdm6600 { + struct device *dev; + struct phy *generic_phy; + struct phy_provider *phy_provider; + struct gpio_desc *ctrl_gpios[PHY_MDM6600_NR_CTRL_LINES]; + struct gpio_descs *mode_gpios; + struct gpio_descs *status_gpios; + struct gpio_descs *cmd_gpios; + struct delayed_work bootup_work; + struct delayed_work status_work; + struct completion ack; + bool enabled; /* mdm6600 phy enabled */ + bool running; /* mdm6600 boot done */ + int status; +}; + +static int phy_mdm6600_init(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -EPROBE_DEFER; + + gpiod_set_value_cansleep(enable_gpio, 0); + + return 0; +} + +static int phy_mdm6600_power_on(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -ENODEV; + + gpiod_set_value_cansleep(enable_gpio, 1); + + return 0; +} + +static int phy_mdm6600_power_off(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -ENODEV; + + gpiod_set_value_cansleep(enable_gpio, 0); + + return 0; +} + +static const struct phy_ops gpio_usb_ops = { + .init = phy_mdm6600_init, + .power_on = phy_mdm6600_power_on, + .power_off = phy_mdm6600_power_off, + .owner = THIS_MODULE, +}; + +/** + * phy_mdm6600_cmd() - send a command request to mdm6600 + * @ddata: device driver data + * + * Configures the three command request GPIOs to the specified value. + */ +static void phy_mdm6600_cmd(struct phy_mdm6600 *ddata, int val) +{ + int values[PHY_MDM6600_NR_CMD_LINES]; + int i; + + val &= (1 << PHY_MDM6600_NR_CMD_LINES) - 1; + for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) + values[i] = (val & BIT(i)) >> i; + + gpiod_set_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, + ddata->cmd_gpios->desc, values); +} + +/** + * phy_mdm6600_status() - read mdm6600 status lines + * @ddata: device driver data + */ +static void phy_mdm6600_status(struct work_struct *work) +{ + struct phy_mdm6600 *ddata; + struct device *dev; + int values[PHY_MDM6600_NR_STATUS_LINES]; + int error, i, val = 0; + + ddata = container_of(work, struct phy_mdm6600, status_work.work); + dev = ddata->dev; + + error = gpiod_get_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, + ddata->status_gpios->desc, + values); + if (error) + return; + + for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) { + val |= values[i] << i; + dev_dbg(ddata->dev, "XXX %s: i: %i values[i]: %i val: %i\n", + __func__, i, values[i], val); + } + ddata->status = val; + + dev_info(dev, "modem status: %i %s\n", + ddata->status, + phy_mdm6600_status_name[ddata->status & 7]); + complete(&ddata->ack); +} + +static irqreturn_t phy_mdm6600_irq_thread(int irq, void *data) +{ + struct phy_mdm6600 *ddata = data; + + schedule_delayed_work(&ddata->status_work, msecs_to_jiffies(10)); + + return IRQ_HANDLED; +} + +/** + * phy_mdm6600_wakeirq_thread - handle mode1 line OOB wake after booting + * @irq: interrupt + * @data: interrupt handler data + * + * GPIO mode1 is used initially as output to configure the USB boot + * mode for mdm6600. After booting it is used as input for OOB wake + * signal from mdm6600 to the SoC. Just use it for debug info only + * for now. + */ +static irqreturn_t phy_mdm6600_wakeirq_thread(int irq, void *data) +{ + struct phy_mdm6600 *ddata = data; + struct gpio_desc *mode_gpio1; + + mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; + dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", + gpiod_get_value(mode_gpio1)); + + return IRQ_HANDLED; +} + +/** + * phy_mdm6600_init_irq() - initialize mdm6600 status IRQ lines + * @ddata: device driver data + */ +static void phy_mdm6600_init_irq(struct phy_mdm6600 *ddata) +{ + struct device *dev = ddata->dev; + int i, error, irq; + + for (i = PHY_MDM6600_STATUS0; + i <= PHY_MDM6600_STATUS2; i++) { + struct gpio_desc *gpio = ddata->status_gpios->desc[i]; + + irq = gpiod_to_irq(gpio); + if (irq <= 0) + continue; + + error = devm_request_threaded_irq(dev, irq, NULL, + phy_mdm6600_irq_thread, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "mdm6600", + ddata); + if (error) + dev_warn(dev, "no modem status irq%i: %i\n", + irq, error); + } +} + +struct phy_mdm6600_map { + const char *name; + int direction; +}; + +static const struct phy_mdm6600_map +phy_mdm6600_ctrl_gpio_map[PHY_MDM6600_NR_CTRL_LINES] = { + { "enable", GPIOD_OUT_LOW, }, /* low = phy disabled */ + { "power", GPIOD_OUT_LOW, }, /* low = off */ + { "reset", GPIOD_OUT_HIGH, }, /* high = reset */ +}; + +/** + * phy_mdm6600_init_lines() - initialize mdm6600 GPIO lines + * @ddata: device driver data + */ +static int phy_mdm6600_init_lines(struct phy_mdm6600 *ddata) +{ + struct device *dev = ddata->dev; + int i; + + /* MDM6600 control lines */ + for (i = 0; i < ARRAY_SIZE(phy_mdm6600_ctrl_gpio_map); i++) { + const struct phy_mdm6600_map *map = + &phy_mdm6600_ctrl_gpio_map[i]; + struct gpio_desc **gpio = &ddata->ctrl_gpios[i]; + + *gpio = devm_gpiod_get(dev, map->name, map->direction); + if (IS_ERR(*gpio)) { + dev_info(dev, "gpio %s error %li\n", + map->name, PTR_ERR(*gpio)); + return PTR_ERR(*gpio); + } + } + + /* MDM6600 USB start-up mode output lines */ + ddata->mode_gpios = devm_gpiod_get_array(dev, "motorola,mode", + GPIOD_OUT_LOW); + if (IS_ERR(ddata->mode_gpios)) + return PTR_ERR(ddata->mode_gpios); + + if (ddata->mode_gpios->ndescs != PHY_MDM6600_NR_MODE_LINES) + return -EINVAL; + + /* MDM6600 status input lines */ + ddata->status_gpios = devm_gpiod_get_array(dev, "motorola,status", + GPIOD_IN); + if (IS_ERR(ddata->status_gpios)) + return PTR_ERR(ddata->status_gpios); + + if (ddata->status_gpios->ndescs != PHY_MDM6600_NR_STATUS_LINES) + return -EINVAL; + + /* MDM6600 cmd output lines */ + ddata->cmd_gpios = devm_gpiod_get_array(dev, "motorola,cmd", + GPIOD_OUT_LOW); + if (IS_ERR(ddata->cmd_gpios)) + return PTR_ERR(ddata->cmd_gpios); + + if (ddata->cmd_gpios->ndescs != PHY_MDM6600_NR_CMD_LINES) + return -EINVAL; + + return 0; +} + +/** + * phy_mdm6600_device_power_on() - power on mdm6600 device + * @ddata: device driver data + * + * To get the integrated USB phy in MDM6600 takes some hoops. We must ensure + * the shared USB bootmode GPIOs are configured, then request modem start-up, + * reset and power-up.. And then we need to recycle the shared USB bootmode + * GPIOs as they are also used for Out of Band (OOB) wake for the USB and + * TS 27.010 serial mux. + */ +static int phy_mdm6600_device_power_on(struct phy_mdm6600 *ddata) +{ + struct gpio_desc *mode_gpio0, *mode_gpio1, *reset_gpio, *power_gpio; + int error = 0, wakeirq; + + mode_gpio0 = ddata->mode_gpios->desc[PHY_MDM6600_MODE0]; + mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; + reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; + power_gpio = ddata->ctrl_gpios[PHY_MDM6600_POWER]; + + /* + * Shared GPIOs must be low for normal USB mode. After booting + * they are used for OOB wake signaling. These can be also used + * to configure USB flashing mode later on based on a module + * parameter. + */ + gpiod_set_value_cansleep(mode_gpio0, 0); + gpiod_set_value_cansleep(mode_gpio1, 0); + + /* Request start-up mode */ + phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_NO_BYPASS); + + /* Request a reset first */ + gpiod_set_value_cansleep(reset_gpio, 0); + msleep(100); + + /* Toggle power GPIO to request mdm6600 to start */ + gpiod_set_value_cansleep(power_gpio, 1); + msleep(100); + gpiod_set_value_cansleep(power_gpio, 0); + + /* + * Looks like the USB PHY needs between 2.2 to 4 seconds. + * If we try to use it before that, we will get L3 errors + * from omap-usb-host trying to access the PHY. See also + * phy_mdm6600_init() for -EPROBE_DEFER. + */ + msleep(PHY_MDM6600_PHY_DELAY_MS); + ddata->enabled = true; + + /* Booting up the rest of MDM6600 will take total about 8 seconds */ + dev_info(ddata->dev, "Waiting for power up request to complete..\n"); + if (wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS))) { + if (ddata->status > PHY_MDM6600_STATUS_PANIC && + ddata->status < PHY_MDM6600_STATUS_SHUTDOWN_ACK) + dev_info(ddata->dev, "Powered up OK\n"); + } else { + ddata->enabled = false; + error = -ETIMEDOUT; + dev_err(ddata->dev, "Timed out powering up\n"); + } + + /* Reconfigure mode1 GPIO as input for OOB wake */ + gpiod_direction_input(mode_gpio1); + + wakeirq = gpiod_to_irq(mode_gpio1); + if (wakeirq <= 0) + return wakeirq; + + error = devm_request_threaded_irq(ddata->dev, wakeirq, NULL, + phy_mdm6600_wakeirq_thread, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "mdm6600-wake", + ddata); + if (error) + dev_warn(ddata->dev, "no modem wakeirq irq%i: %i\n", + wakeirq, error); + + ddata->running = true; + + return error; +} + +/** + * phy_mdm6600_device_power_off() - power off mdm6600 device + * @ddata: device driver data + */ +static void phy_mdm6600_device_power_off(struct phy_mdm6600 *ddata) +{ + struct gpio_desc *reset_gpio = + ddata->ctrl_gpios[PHY_MDM6600_RESET]; + + ddata->enabled = false; + phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_BP_SHUTDOWN_REQ); + msleep(100); + + gpiod_set_value_cansleep(reset_gpio, 1); + + dev_info(ddata->dev, "Waiting for power down request to complete.. "); + if (wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(5000))) { + if (ddata->status == PHY_MDM6600_STATUS_PANIC) + dev_info(ddata->dev, "Powered down OK\n"); + } else { + dev_err(ddata->dev, "Timed out powering down\n"); + } +} + +static void phy_mdm6600_deferred_power_on(struct work_struct *work) +{ + struct phy_mdm6600 *ddata; + int error; + + ddata = container_of(work, struct phy_mdm6600, bootup_work.work); + + error = phy_mdm6600_device_power_on(ddata); + if (error) + dev_err(ddata->dev, "Device not functional\n"); +} + +static const struct of_device_id phy_mdm6600_id_table[] = { + { .compatible = "motorola,mapphone-mdm6600", }, + {}, +}; +MODULE_DEVICE_TABLE(of, phy_mdm6600_id_table); + +static int phy_mdm6600_probe(struct platform_device *pdev) +{ + struct phy_mdm6600 *ddata; + int error; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + INIT_DELAYED_WORK(&ddata->bootup_work, + phy_mdm6600_deferred_power_on); + INIT_DELAYED_WORK(&ddata->status_work, phy_mdm6600_status); + init_completion(&ddata->ack); + + ddata->dev = &pdev->dev; + platform_set_drvdata(pdev, ddata); + + error = phy_mdm6600_init_lines(ddata); + if (error) + return error; + + phy_mdm6600_init_irq(ddata); + + ddata->generic_phy = devm_phy_create(ddata->dev, NULL, &gpio_usb_ops); + if (IS_ERR(ddata->generic_phy)) { + error = PTR_ERR(ddata->generic_phy); + goto cleanup; + } + + phy_set_drvdata(ddata->generic_phy, ddata); + + ddata->phy_provider = + devm_of_phy_provider_register(ddata->dev, + of_phy_simple_xlate); + if (IS_ERR(ddata->phy_provider)) { + error = PTR_ERR(ddata->phy_provider); + goto cleanup; + } + + schedule_delayed_work(&ddata->bootup_work, 0); + + /* + * See phy_mdm6600_device_power_on(). We should be able + * to remove this eventually when ohci-platform can deal + * with -EPROBE_DEFER. + */ + msleep(PHY_MDM6600_PHY_DELAY_MS + 500); + + return 0; + +cleanup: + phy_mdm6600_device_power_off(ddata); + return error; +} + +static int phy_mdm6600_remove(struct platform_device *pdev) +{ + struct phy_mdm6600 *ddata = platform_get_drvdata(pdev); + struct gpio_desc *reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; + + if (!ddata->running) + wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS)); + + gpiod_set_value_cansleep(reset_gpio, 1); + phy_mdm6600_device_power_off(ddata); + + cancel_delayed_work_sync(&ddata->bootup_work); + cancel_delayed_work_sync(&ddata->status_work); + + return 0; +} + +static struct platform_driver phy_mdm6600_driver = { + .probe = phy_mdm6600_probe, + .remove = phy_mdm6600_remove, + .driver = { + .name = "phy-mapphone-mdm6600", + .of_match_table = of_match_ptr(phy_mdm6600_id_table), + }, +}; + +module_platform_driver(phy_mdm6600_driver); + +MODULE_ALIAS("platform:gpio_usb"); +MODULE_AUTHOR("Tony Lindgren "); +MODULE_DESCRIPTION("mdm6600 gpio usb phy driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From 0fbc47d9e426a934668dbfeb0db26da6f0b7f35c Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Fri, 16 Feb 2018 13:09:51 +0100 Subject: phy: rockchip-typec: deprecate some DT properties for various register fields. Adding properties for various register fields in the DT doesn't scale and this information should be in the driver instead. Before this patch these registers (description below) were specified in the DT, every register node contained 3 sections: offset, enable bit, write mask bit. - rockchip,typec-conn-dir : the register of type-c connector direction, for type-c phy0, it must be <0xe580 0 16>; for type-c phy1, it must be <0xe58c 0 16>; - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable control. for type-c phy0, it must be <0xe580 3 19>; for type-c phy1, it must be <0xe58c 3 19>; - rockchip,external-psm : the register of type-c phy external psm clock selection. for type-c phy0, it must be <0xe588 14 30>; for type-c phy1, it must be <0xe594 14 30>; - rockchip,pipe-status : the register of type-c phy pipe status. for type-c phy0, it must be <0xe5c0 0 0>; for type-c phy1, it must be <0xe5c0 16 16>; After this patch these register definitions are in the driver. So can be removed from the DT. Note that there are 2 type-c phys for RK3399 with different offsets, the driver checks the phy base address of the running instance and applies the right offsets. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 112 +++++++++++++++++------------- 1 file changed, 63 insertions(+), 49 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 7492c8978217..5f660f6b9f95 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -355,7 +355,16 @@ struct usb3phy_reg { u32 write_enable; }; +/** + * struct rockchip_usb3phy_port_cfg: usb3-phy port configuration. + * @reg: the base address for usb3-phy config. + * @typec_conn_dir: the register of type-c connector direction. + * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. + * @external_psm: the register of type-c phy external psm clock. + * @pipe_status: the register of type-c phy pipe status. + */ struct rockchip_usb3phy_port_cfg { + unsigned int reg; struct usb3phy_reg typec_conn_dir; struct usb3phy_reg usb3tousb2_en; struct usb3phy_reg external_psm; @@ -372,7 +381,7 @@ struct rockchip_typec_phy { struct reset_control *uphy_rst; struct reset_control *pipe_rst; struct reset_control *tcphy_rst; - struct rockchip_usb3phy_port_cfg port_cfgs; + const struct rockchip_usb3phy_port_cfg *port_cfgs; /* mutex to protect access to individual PHYs */ struct mutex lock; @@ -424,6 +433,24 @@ struct phy_reg dp_pll_cfg[] = { { 0x4, CMN_DIAG_PLL1_INCLK_CTRL }, }; +static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { + { + .reg = 0xff7c0000, + .typec_conn_dir = { 0xe580, 0, 16 }, + .usb3tousb2_en = { 0xe580, 3, 19 }, + .external_psm = { 0xe588, 14, 30 }, + .pipe_status = { 0xe5c0, 0, 0 }, + }, + { + .reg = 0xff800000, + .typec_conn_dir = { 0xe58c, 0, 16 }, + .usb3tousb2_en = { 0xe58c, 3, 19 }, + .external_psm = { 0xe594, 14, 30 }, + .pipe_status = { 0xe5c0, 16, 16 }, + }, + { /* sentinel */ } +}; + static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy) { u32 i, rdata; @@ -691,7 +718,7 @@ static void tcphy_dp_aux_calibration(struct rockchip_typec_phy *tcphy) static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; int ret, i; u32 val; @@ -821,7 +848,7 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) static int rockchip_usb3_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; const struct usb3phy_reg *reg = &cfg->pipe_status; int timeout, new_mode, ret = 0; u32 val; @@ -984,51 +1011,9 @@ static const struct phy_ops rockchip_dp_phy_ops = { .owner = THIS_MODULE, }; -static int tcphy_get_param(struct device *dev, - struct usb3phy_reg *reg, - const char *name) -{ - u32 buffer[3]; - int ret; - - ret = of_property_read_u32_array(dev->of_node, name, buffer, 3); - if (ret) { - dev_err(dev, "Can not parse %s\n", name); - return ret; - } - - reg->offset = buffer[0]; - reg->enable_bit = buffer[1]; - reg->write_enable = buffer[2]; - return 0; -} - static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, struct device *dev) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; - int ret; - - ret = tcphy_get_param(dev, &cfg->typec_conn_dir, - "rockchip,typec-conn-dir"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->usb3tousb2_en, - "rockchip,usb3tousb2-en"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->external_psm, - "rockchip,external-psm"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->pipe_status, - "rockchip,pipe-status"); - if (ret) - return ret; - tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (IS_ERR(tcphy->grf_regs)) { @@ -1071,7 +1056,7 @@ static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, static void typec_phy_pre_init(struct rockchip_typec_phy *tcphy) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; reset_control_assert(tcphy->tcphy_rst); reset_control_assert(tcphy->uphy_rst); @@ -1092,17 +1077,43 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev) struct rockchip_typec_phy *tcphy; struct phy_provider *phy_provider; struct resource *res; - int ret; + const struct rockchip_usb3phy_port_cfg *phy_cfgs; + const struct of_device_id *match; + int index, ret; tcphy = devm_kzalloc(dev, sizeof(*tcphy), GFP_KERNEL); if (!tcphy) return -ENOMEM; + match = of_match_device(dev->driver->of_match_table, dev); + if (!match || !match->data) { + dev_err(dev, "phy configs are not assigned!\n"); + return -EINVAL; + } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); tcphy->base = devm_ioremap_resource(dev, res); if (IS_ERR(tcphy->base)) return PTR_ERR(tcphy->base); + phy_cfgs = match->data; + /* find out a proper config which can be matched with dt. */ + index = 0; + while (phy_cfgs[index].reg) { + if (phy_cfgs[index].reg == res->start) { + tcphy->port_cfgs = &phy_cfgs[index]; + break; + } + + ++index; + } + + if (!tcphy->port_cfgs) { + dev_err(dev, "no phy-config can be matched with %s node\n", + np->name); + return -EINVAL; + } + ret = tcphy_parse_dt(tcphy, dev); if (ret) return ret; @@ -1162,8 +1173,11 @@ static int rockchip_typec_phy_remove(struct platform_device *pdev) } static const struct of_device_id rockchip_typec_phy_dt_ids[] = { - { .compatible = "rockchip,rk3399-typec-phy" }, - {} + { + .compatible = "rockchip,rk3399-typec-phy", + .data = &rk3399_usb3phy_port_cfgs + }, + { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rockchip_typec_phy_dt_ids); -- cgit v1.2.1 From 6912d4f40bc7b8a40604f2fa02bb5545e39d1a35 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Fri, 16 Feb 2018 13:09:52 +0100 Subject: dt-bindings: phy-rockchip-typec: deprecate some register properties. As now the following register properties are in the driver, document as deprecated these properties and recommend to not use them on new bindings. The deprecated properties are: - rockchip,typec-conn-dir : the register of type-c connector direction - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable control. - rockchip,external-psm : the register of type-c phy external psm clock selection. - rockchip,pipe-status : the register of type-c phy pipe status. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../devicetree/bindings/phy/phy-rockchip-typec.txt | 33 +++++----------------- 1 file changed, 7 insertions(+), 26 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt index 6ea867e3176f..f95cd492d6fc 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt @@ -16,24 +16,6 @@ Required properties: "uphy", "uphy-pipe", "uphy-tcphy" - extcon : extcon specifier for the Power Delivery -Note, there are 2 type-c phys for RK3399, and they are almost identical, except -these registers(description below), every register node contains 3 sections: -offset, enable bit, write mask bit. - - rockchip,typec-conn-dir : the register of type-c connector direction, - for type-c phy0, it must be <0xe580 0 16>; - for type-c phy1, it must be <0xe58c 0 16>; - - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable - control. - for type-c phy0, it must be <0xe580 3 19>; - for type-c phy1, it must be <0xe58c 3 19>; - - rockchip,external-psm : the register of type-c phy external psm clock - selection. - for type-c phy0, it must be <0xe588 14 30>; - for type-c phy1, it must be <0xe594 14 30>; - - rockchip,pipe-status : the register of type-c phy pipe status. - for type-c phy0, it must be <0xe5c0 0 0>; - for type-c phy1, it must be <0xe5c0 16 16>; - Required nodes : a sub-node is required for each port the phy provides. The sub-node name is used to identify dp or usb3 port, and shall be the following entries: @@ -43,6 +25,13 @@ Required nodes : a sub-node is required for each port the phy provides. Required properties (port (child) node): - #phy-cells : must be 0, See ./phy-bindings.txt for details. +Deprecated properties, do not use in new device tree sources, these +properties are determined by the compatible value: + - rockchip,typec-conn-dir + - rockchip,usb3tousb2-en + - rockchip,external-psm + - rockchip,pipe-status + Example: tcphy0: phy@ff7c0000 { compatible = "rockchip,rk3399-typec-phy"; @@ -58,10 +47,6 @@ Example: <&cru SRST_UPHY0_PIPE_L00>, <&cru SRST_P_UPHY0_TCPHY>; reset-names = "uphy", "uphy-pipe", "uphy-tcphy"; - rockchip,typec-conn-dir = <0xe580 0 16>; - rockchip,usb3tousb2-en = <0xe580 3 19>; - rockchip,external-psm = <0xe588 14 30>; - rockchip,pipe-status = <0xe5c0 0 0>; tcphy0_dp: dp-port { #phy-cells = <0>; @@ -86,10 +71,6 @@ Example: <&cru SRST_UPHY1_PIPE_L00>, <&cru SRST_P_UPHY1_TCPHY>; reset-names = "uphy", "uphy-pipe", "uphy-tcphy"; - rockchip,typec-conn-dir = <0xe58c 0 16>; - rockchip,usb3tousb2-en = <0xe58c 3 19>; - rockchip,external-psm = <0xe594 14 30>; - rockchip,pipe-status = <0xe5c0 16 16>; tcphy1_dp: dp-port { #phy-cells = <0>; -- cgit v1.2.1 From f293f7409f6b2850d45a9fb8689003d8fa6fe453 Mon Sep 17 00:00:00 2001 From: William wu Date: Fri, 16 Feb 2018 13:09:53 +0100 Subject: phy: rockchip-typec: enable usb3 host during usb3 phy power on We have forced usb3 to work in usb2 only mode in firmware by setting usb3tousb2_en (bit3 of GRF_USB3PHY0/1_CON0) to 1, and setting host_u3_port_disable (bit0 of GRF_USB3OTG0/1_CON1) to 1 and host_u3_port (bit15~12 of GRF_USB3OTG0/1_CON1) to 0. So we need to re-enable usb3 host. Note that the RK3399 TRM suggests that we should keep the whole usb3 controller in reset for the duration of the Type-C PHY initialization. However, it's hard to assert the reset in the current framework of reset. And according to the TRM, it doesn't require that we should clear the usb3tousb2 bit before pipe ready. So let's enable the usb3 host after pipe ready to avoid the Type-C PHY initialization failure. Signed-off-by: William wu Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 5f660f6b9f95..54dc52a948ef 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -362,6 +362,8 @@ struct usb3phy_reg { * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. * @external_psm: the register of type-c phy external psm clock. * @pipe_status: the register of type-c phy pipe status. + * @usb3_host_disable: the register of type-c usb3 host disable. + * @usb3_host_port: the register of type-c usb3 host port. */ struct rockchip_usb3phy_port_cfg { unsigned int reg; @@ -369,6 +371,8 @@ struct rockchip_usb3phy_port_cfg { struct usb3phy_reg usb3tousb2_en; struct usb3phy_reg external_psm; struct usb3phy_reg pipe_status; + struct usb3phy_reg usb3_host_disable; + struct usb3phy_reg usb3_host_port; }; struct rockchip_typec_phy { @@ -440,6 +444,8 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .usb3tousb2_en = { 0xe580, 3, 19 }, .external_psm = { 0xe588, 14, 30 }, .pipe_status = { 0xe5c0, 0, 0 }, + .usb3_host_disable = { 0x2434, 0, 16 }, + .usb3_host_port = { 0x2434, 12, 28 }, }, { .reg = 0xff800000, @@ -447,6 +453,8 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .usb3tousb2_en = { 0xe58c, 3, 19 }, .external_psm = { 0xe594, 14, 30 }, .pipe_status = { 0xe5c0, 16, 16 }, + .usb3_host_disable = { 0x2444, 0, 16 }, + .usb3_host_port = { 0x2444, 12, 28 }, }, { /* sentinel */ } }; @@ -879,6 +887,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) regmap_read(tcphy->grf_regs, reg->offset, &val); if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); + /* enable usb3 host */ + property_enable(tcphy, &cfg->usb3_host_disable, 0); + property_enable(tcphy, &cfg->usb3_host_port, 1); goto unlock_ret; } usleep_range(10, 20); -- cgit v1.2.1 From 5eac5e9c0f515f8e452321b159b4093065dfc757 Mon Sep 17 00:00:00 2001 From: Chris Zhong Date: Fri, 16 Feb 2018 13:09:54 +0100 Subject: phy: rockchip-typec: force to USB2 if DP at 4 lanes mode The usb3tousb2_en BIT will be clear to 0 in probe(), it make USB controller work at USB3 mode, and if the USB phy is turned on with DP only mode(4 lanes DP), the rockchip_usb3_phy_power_on() will return directly, so usb3_host_disable and usb3_host_port these 2 BIT will keep a same value as coreboot. In coreboot, these 3 BITs are set as USB2 mode, but now one of the bits is changed to USB3, it make USB controller work at a unknown status. These 3 BITs should be changed to USB2, if the Type-C works at 4 lanes mode, and then switch it back to USB3 mode, when USB disconnect. Signed-off-by: Chris Zhong Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 54dc52a948ef..9bc4d4bd46d3 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -853,6 +853,18 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) return mode; } +static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy, + bool value) +{ + struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; + + property_enable(tcphy, &cfg->usb3tousb2_en, value); + property_enable(tcphy, &cfg->usb3_host_disable, value); + property_enable(tcphy, &cfg->usb3_host_port, !value); + + return 0; +} + static int rockchip_usb3_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); @@ -870,8 +882,10 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) } /* DP-only mode; fall back to USB2 */ - if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) + if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) { + tcphy_cfg_usb3_to_usb2_only(tcphy, true); goto unlock_ret; + } if (tcphy->mode == new_mode) goto unlock_ret; @@ -887,9 +901,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) regmap_read(tcphy->grf_regs, reg->offset, &val); if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); + /* enable usb3 host */ - property_enable(tcphy, &cfg->usb3_host_disable, 0); - property_enable(tcphy, &cfg->usb3_host_port, 1); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); goto unlock_ret; } usleep_range(10, 20); @@ -910,6 +924,7 @@ static int rockchip_usb3_phy_power_off(struct phy *phy) struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); mutex_lock(&tcphy->lock); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); if (tcphy->mode == MODE_DISCONNECT) goto unlock; -- cgit v1.2.1 From 866d4087f30170187b2d456e7f40cd4e7f29041b Mon Sep 17 00:00:00 2001 From: Chris Zhong Date: Fri, 16 Feb 2018 13:09:55 +0100 Subject: phy: rockchip-typec: support DP phy switch There are 2 Type-c PHYs in RK3399, but only one DP controller. Hence only one PHY can connect to DP controller at one time, the other should be disconnected. The GRF_SOC_CON26 register has a switch bit to do it, set this bit means enable PHY 1, clear this bit means enable PHY 0. Signed-off-by: Chris Zhong Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 9bc4d4bd46d3..1c79785a5439 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -364,6 +364,7 @@ struct usb3phy_reg { * @pipe_status: the register of type-c phy pipe status. * @usb3_host_disable: the register of type-c usb3 host disable. * @usb3_host_port: the register of type-c usb3 host port. + * @uphy_dp_sel: the register of type-c phy DP select control. */ struct rockchip_usb3phy_port_cfg { unsigned int reg; @@ -373,6 +374,7 @@ struct rockchip_usb3phy_port_cfg { struct usb3phy_reg pipe_status; struct usb3phy_reg usb3_host_disable; struct usb3phy_reg usb3_host_port; + struct usb3phy_reg uphy_dp_sel; }; struct rockchip_typec_phy { @@ -446,6 +448,7 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .pipe_status = { 0xe5c0, 0, 0 }, .usb3_host_disable = { 0x2434, 0, 16 }, .usb3_host_port = { 0x2434, 12, 28 }, + .uphy_dp_sel = { 0x6268, 19, 19 }, }, { .reg = 0xff800000, @@ -455,6 +458,7 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .pipe_status = { 0xe5c0, 16, 16 }, .usb3_host_disable = { 0x2444, 0, 16 }, .usb3_host_port = { 0x2444, 12, 28 }, + .uphy_dp_sel = { 0x6268, 3, 19 }, }, { /* sentinel */ } }; @@ -856,7 +860,7 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy, bool value) { - struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; property_enable(tcphy, &cfg->usb3tousb2_en, value); property_enable(tcphy, &cfg->usb3_host_disable, value); @@ -947,6 +951,7 @@ static const struct phy_ops rockchip_usb3_phy_ops = { static int rockchip_dp_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; int new_mode, ret = 0; u32 val; @@ -979,6 +984,8 @@ static int rockchip_dp_phy_power_on(struct phy *phy) if (ret) goto unlock_ret; + property_enable(tcphy, &cfg->uphy_dp_sel, 1); + ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL, val, val & DP_MODE_A2, 1000, PHY_MODE_SET_TIMEOUT); -- cgit v1.2.1 From 21bf9bc2a99e7b519b0035155209aeea2bc90696 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Thu, 1 Mar 2018 16:25:11 +0100 Subject: dt-bindings: phy-rockchip-typec: move extcon property to be optional. The extcon property is used to detect the cable-state but some boards just connect the type-c phy to a regular USB-A connector without any power-delivery and thus no controller reporting the cable-state. So the extcon property is not really a required property, move it to be optional instead. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt index f95cd492d6fc..960da7fcaa9e 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt @@ -14,6 +14,8 @@ Required properties: - resets : a list of phandle + reset specifier pairs - reset-names : string reset name, must be: "uphy", "uphy-pipe", "uphy-tcphy" + +Optional properties: - extcon : extcon specifier for the Power Delivery Required nodes : a sub-node is required for each port the phy provides. -- cgit v1.2.1 From ec1fcd7b7e6f50dd6e259ca76c6e41e2346b3afe Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Thu, 1 Mar 2018 16:25:10 +0100 Subject: phy: rockchip-typec: fall back to working in host-mode if extcon is missing. Right now the rockchip type-c phy does fail probing when no extcon is detected. Some boards get the cable-state via the extcon interface and have this supported, other boards seem to use the fusb302 chip or another but the driver currently does not seem to utilize the extcon interface to report the cable-state. And, other, just connect the type-c to a standard USB-A port so use no controller at all. A missing extcon shouldn't fail to probe, instead, should just fall back to working in host-mode if it cannot get the extcon. Fixes: c301b327aea898af ("arm64: dts: rockchip: add usb3-phy otg-port support for rk3399") Reported-by: Vicente Bergas Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 1c79785a5439..76a4b58ec771 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -821,6 +821,9 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) u8 mode; int ret; + if (!edev) + return MODE_DFP_USB; + ufp = extcon_get_state(edev, EXTCON_USB); dp = extcon_get_state(edev, EXTCON_DISP_DP); @@ -1159,9 +1162,13 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev) tcphy->extcon = extcon_get_edev_by_phandle(dev, 0); if (IS_ERR(tcphy->extcon)) { - if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER) - dev_err(dev, "Invalid or missing extcon\n"); - return PTR_ERR(tcphy->extcon); + if (PTR_ERR(tcphy->extcon) == -ENODEV) { + tcphy->extcon = NULL; + } else { + if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER) + dev_err(dev, "Invalid or missing extcon\n"); + return PTR_ERR(tcphy->extcon); + } } pm_runtime_enable(dev); -- cgit v1.2.1 From e7f4da4c44fe74e1c9277bac9b12ea1ef4eb70db Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 14 Mar 2018 11:02:18 +0100 Subject: phy: tegra: xusb: Uncomment register write The reason why this was originally commented out is no longer clear. The UPHY driver for SATA works fine with or without this change. The reset value of the XDIGCLK_EN bit is 0, so unless programmed by the bootloader this shouldn't make a difference anyway. Define a macro for this bit and uncomment the code. This also fixes a coverity issue brought to my attention by Rohith because not only is the XDIGCLK_EN field modification commented out, but also the register write which causes none of the earlier modifications of the register value to be written to the register and the value being overwritten. Reported-by: Rohith Seelaboyina Signed-off-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/tegra/xusb-tegra210.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/phy/tegra/xusb-tegra210.c b/drivers/phy/tegra/xusb-tegra210.c index 9d0689ebd28c..05bee32a3a4d 100644 --- a/drivers/phy/tegra/xusb-tegra210.c +++ b/drivers/phy/tegra/xusb-tegra210.c @@ -169,6 +169,7 @@ #define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN (1 << 0) #define XUSB_PADCTL_UPHY_PLL_P0_CTL4 0x36c +#define XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN (1 << 19) #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_EN (1 << 15) #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT 12 #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_MASK 0x3 @@ -537,11 +538,8 @@ static int tegra210_sata_uphy_enable(struct tegra_xusb_padctl *padctl, bool usb) value |= (XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SATA_VAL << XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT); - /* XXX PLL0_XDIGCLK_EN */ - /* - value &= ~(1 << 19); + value &= ~XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN; padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL4); - */ value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1); value &= ~((XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_MASK << -- cgit v1.2.1 From 29f653393e740b159933b03de25f929bec7b31b7 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 16 Mar 2018 16:32:58 +0200 Subject: usb: xhci: Clean up error code in xhci_dbc_tty_register_device() tty_port_register_device() returns error pointers on error, never NULL. The IS_ERR_OR_NULL() function returns either 1 or 0 so it means we return 1 on error instead of a proper error code. The caller only checks for zero vs non-zero so this doesn't affect runtime. Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbgtty.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index 8d47b6fbf973..6f534b6decef 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -443,9 +443,10 @@ int xhci_dbc_tty_register_device(struct xhci_hcd *xhci) xhci_dbc_tty_init_port(xhci, port); tty_dev = tty_port_register_device(&port->port, dbc_tty_driver, 0, NULL); - ret = IS_ERR_OR_NULL(tty_dev); - if (ret) + if (IS_ERR(tty_dev)) { + ret = PTR_ERR(tty_dev); goto register_fail; + } ret = kfifo_alloc(&port->write_fifo, DBC_WRITE_BUF_SIZE, GFP_KERNEL); if (ret) -- cgit v1.2.1 From 5fee5a5afa9ff1e4a242a492d5ce181974fbd969 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Fri, 16 Mar 2018 16:32:59 +0200 Subject: usb: xhci: Remove ep_trb from xhci_cleanup_halted_endpoint() Function argument ep_trb for xhci_cleanup_halted_endpoint() isn't needed anymore. Cleanup it. Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index daa94c3aed80..642a07022e7a 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1815,8 +1815,7 @@ struct xhci_segment *trb_in_td(struct xhci_hcd *xhci, static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, - unsigned int stream_id, - struct xhci_td *td, union xhci_trb *ep_trb, + unsigned int stream_id, struct xhci_td *td, enum xhci_ep_reset_type reset_type) { struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; @@ -1957,8 +1956,7 @@ static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td, * The class driver clears the device side halt later. */ xhci_cleanup_halted_endpoint(xhci, slot_id, ep_index, - ep_ring->stream_id, td, ep_trb, - EP_HARD_RESET); + ep_ring->stream_id, td, EP_HARD_RESET); } else { /* Update ring dequeue pointer */ while (ep_ring->dequeue != td->last_trb) @@ -2318,7 +2316,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, case COMP_INVALID_STREAM_TYPE_ERROR: case COMP_INVALID_STREAM_ID_ERROR: xhci_cleanup_halted_endpoint(xhci, slot_id, ep_index, 0, - NULL, NULL, EP_SOFT_RESET); + NULL, EP_SOFT_RESET); goto cleanup; case COMP_RING_UNDERRUN: case COMP_RING_OVERRUN: @@ -2584,8 +2582,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, xhci_cleanup_halted_endpoint(xhci, slot_id, ep_index, ep_ring->stream_id, - td, ep_trb, - EP_HARD_RESET); + td, EP_HARD_RESET); goto cleanup; } -- cgit v1.2.1 From 0c341910cb3d2376cd438b074634b173af8a2a52 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Fri, 16 Mar 2018 16:33:00 +0200 Subject: usb: xhci: Remove ep_trb from finish_td() Function argument ep_trb for finish_td() isn't needed anymore. Cleanup it. Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 642a07022e7a..88071c4444c6 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1921,7 +1921,7 @@ static int xhci_td_cleanup(struct xhci_hcd *xhci, struct xhci_td *td, } static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td, - union xhci_trb *ep_trb, struct xhci_transfer_event *event, + struct xhci_transfer_event *event, struct xhci_virt_ep *ep, int *status) { struct xhci_virt_device *xdev; @@ -2081,7 +2081,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, td->urb->actual_length = requested; finish_td: - return finish_td(xhci, td, ep_trb, event, ep, status); + return finish_td(xhci, td, event, ep, status); } /* @@ -2168,7 +2168,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, td->urb->actual_length += frame->actual_length; - return finish_td(xhci, td, ep_trb, event, ep, status); + return finish_td(xhci, td, event, ep, status); } static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, @@ -2258,7 +2258,7 @@ finish_td: remaining); td->urb->actual_length = 0; } - return finish_td(xhci, td, ep_trb, event, ep, status); + return finish_td(xhci, td, event, ep, status); } /* -- cgit v1.2.1 From a400efe455f7b61ac9a801ac8d0d01f8c8d82dd5 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 16 Mar 2018 16:33:01 +0200 Subject: xhci: zero usb device slot_id member when disabling and freeing a xhci slot set udev->slot_id to zero when disabling and freeing the xhci slot. Prevents usb core from calling xhci with a stale slot id. xHC controller may be reset during resume to recover from some error. All slots are unusable as they are disabled and freed. xhci driver starts slot enumeration again from 1 in the order they are enabled. In the worst case a stale udev->slot_id for one device matches a newly enabled slot_id for a different device, causing us to perform a action on the wrong device. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 332420d10be9..e5ace8995b3b 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -913,6 +913,8 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) if (dev->out_ctx) xhci_free_container_ctx(xhci, dev->out_ctx); + if (dev->udev && dev->udev->slot_id) + dev->udev->slot_id = 0; kfree(xhci->devs[slot_id]); xhci->devs[slot_id] = NULL; } -- cgit v1.2.1 From a38fe33889095c5d7b1eb094d977fc3f2bab7ebd Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 16 Mar 2018 16:33:02 +0200 Subject: xhci: Don't always run the default stop endpoint command completion handler The default stop endpoint completion handler will give back cancelled URBs, and clean, or move past those canceller TRBs on the ring. This is not always the preferred action. If the stop endpoint command issuer is waiting for a completion skip the default handler and just call the completion. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 88071c4444c6..86476c6a8abc 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1436,7 +1436,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, case TRB_STOP_RING: WARN_ON(slot_id != TRB_TO_SLOT_ID( le32_to_cpu(cmd_trb->generic.field[3]))); - xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, event); + if (!cmd->completion) + xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, event); break; case TRB_SET_DEQ: WARN_ON(slot_id != TRB_TO_SLOT_ID( -- cgit v1.2.1 From 15febf5eede9ff9d3180d257441e9a2fbb3f0ae6 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 16 Mar 2018 16:33:03 +0200 Subject: xhci: refactor xhci_urb_enqueue a bit with minor changes make the local ep_state variable a pointer to the actual ring ep_state. This allows us to read fresh ep_state values every time, will be useful later. Also move the streams check out from bulk only case. Even if only bulk tranfers can use streams we shouldn't continue if those flags are set. Main reason for this change is really code readability and grouping functionality Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 25d4b748a56f..f9d8a32d8ceb 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1287,7 +1287,8 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag struct xhci_hcd *xhci = hcd_to_xhci(hcd); unsigned long flags; int ret = 0; - unsigned int slot_id, ep_index, ep_state; + unsigned int slot_id, ep_index; + unsigned int *ep_state; struct urb_priv *urb_priv; int num_tds; @@ -1297,6 +1298,7 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag slot_id = urb->dev->slot_id; ep_index = xhci_get_endpoint_index(&urb->ep->desc); + ep_state = &xhci->devs[slot_id]->eps[ep_index].ep_state; if (!HCD_HW_ACCESSIBLE(hcd)) { if (!in_interrupt()) @@ -1348,6 +1350,12 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag ret = -ESHUTDOWN; goto free_priv; } + if (*ep_state & (EP_GETTING_STREAMS | EP_GETTING_NO_STREAMS)) { + xhci_warn(xhci, "WARN: Can't enqueue URB, ep in streams transition state %x\n", + *ep_state); + ret = -EINVAL; + goto free_priv; + } switch (usb_endpoint_type(&urb->ep->desc)) { @@ -1356,23 +1364,13 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag slot_id, ep_index); break; case USB_ENDPOINT_XFER_BULK: - ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; - if (ep_state & (EP_GETTING_STREAMS | EP_GETTING_NO_STREAMS)) { - xhci_warn(xhci, "WARN: Can't enqueue URB, ep in streams transition state %x\n", - ep_state); - ret = -EINVAL; - break; - } ret = xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); break; - - case USB_ENDPOINT_XFER_INT: ret = xhci_queue_intr_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); break; - case USB_ENDPOINT_XFER_ISOC: ret = xhci_queue_isoc_tx_prepare(xhci, GFP_ATOMIC, urb, slot_id, ep_index); -- cgit v1.2.1 From f5249461b504d35aa1a40140983b7ec415807d9e Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 16 Mar 2018 16:33:04 +0200 Subject: xhci: Clear the host side toggle manually when endpoint is soft reset Some devices use a clear endpoint halt request as a soft reset, even if the endpoint is not halted. This will clear the toggle and sequence on the device side. xHCI however refuses to reset a non-halted endpoint, so instead we need to issue a configure endpoint command on xHCI to clear its host side toggle and sequence, and get it in sync with the device side. This is a respin of a old patch that was reverted as it had a stale endpoint context dequeue value which caused regression. commit 27082e2654dc ("xhci: Clear the host side toggle manually when endpoint is 'soft reset'") Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 5 ++- drivers/usb/host/xhci.c | 105 ++++++++++++++++++++++++++++++++++++------- drivers/usb/host/xhci.h | 2 + 3 files changed, 95 insertions(+), 17 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 86476c6a8abc..91a1a824673d 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1829,9 +1829,10 @@ static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); - if (reset_type == EP_HARD_RESET) + if (reset_type == EP_HARD_RESET) { + ep->ep_state |= EP_HARD_CLEAR_TOGGLE; xhci_cleanup_stalled_ring(xhci, ep_index, stream_id, td); - + } xhci_ring_cmd_db(xhci); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index f9d8a32d8ceb..05b22b8bc19f 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1356,6 +1356,11 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag ret = -EINVAL; goto free_priv; } + if (*ep_state & EP_SOFT_CLEAR_TOGGLE) { + xhci_warn(xhci, "Can't enqueue URB while manually clearing toggle\n"); + ret = -EINVAL; + goto free_priv; + } switch (usb_endpoint_type(&urb->ep->desc)) { @@ -2869,33 +2874,103 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, unsigned int ep_index, } } -/* Called when clearing halted device. The core should have sent the control - * message to clear the device halt condition. The host side of the halt should - * already be cleared with a reset endpoint command issued when the STALL tx - * event was received. +/* + * Called after usb core issues a clear halt control message. + * The host side of the halt should already be cleared by a reset endpoint + * command issued when the STALL event was received. * - * Context: in_interrupt + * The reset endpoint command may only be issued to endpoints in the halted + * state. For software that wishes to reset the data toggle or sequence number + * of an endpoint that isn't in the halted state this function will issue a + * configure endpoint command with the Drop and Add bits set for the target + * endpoint. Refer to the additional note in xhci spcification section 4.6.8. */ static void xhci_endpoint_reset(struct usb_hcd *hcd, - struct usb_host_endpoint *ep) + struct usb_host_endpoint *host_ep) { struct xhci_hcd *xhci; + struct usb_device *udev; + struct xhci_virt_device *vdev; + struct xhci_virt_ep *ep; + struct xhci_input_control_ctx *ctrl_ctx; + struct xhci_command *stop_cmd, *cfg_cmd; + unsigned int ep_index; + unsigned long flags; + u32 ep_flag; xhci = hcd_to_xhci(hcd); + if (!host_ep->hcpriv) + return; + udev = (struct usb_device *) host_ep->hcpriv; + vdev = xhci->devs[udev->slot_id]; + ep_index = xhci_get_endpoint_index(&host_ep->desc); + ep = &vdev->eps[ep_index]; + + /* Bail out if toggle is already being cleared by a endpoint reset */ + if (ep->ep_state & EP_HARD_CLEAR_TOGGLE) { + ep->ep_state &= ~EP_HARD_CLEAR_TOGGLE; + return; + } + /* Only interrupt and bulk ep's use data toggle, USB2 spec 5.5.4-> */ + if (usb_endpoint_xfer_control(&host_ep->desc) || + usb_endpoint_xfer_isoc(&host_ep->desc)) + return; + + ep_flag = xhci_get_endpoint_flag(&host_ep->desc); + + if (ep_flag == SLOT_FLAG || ep_flag == EP0_FLAG) + return; + + stop_cmd = xhci_alloc_command(xhci, true, GFP_NOWAIT); + if (!stop_cmd) + return; + + cfg_cmd = xhci_alloc_command_with_ctx(xhci, true, GFP_NOWAIT); + if (!cfg_cmd) + goto cleanup; + + spin_lock_irqsave(&xhci->lock, flags); + + /* block queuing new trbs and ringing ep doorbell */ + ep->ep_state |= EP_SOFT_CLEAR_TOGGLE; /* - * We might need to implement the config ep cmd in xhci 4.8.1 note: - * The Reset Endpoint Command may only be issued to endpoints in the - * Halted state. If software wishes reset the Data Toggle or Sequence - * Number of an endpoint that isn't in the Halted state, then software - * may issue a Configure Endpoint Command with the Drop and Add bits set - * for the target endpoint. that is in the Stopped state. + * Make sure endpoint ring is empty before resetting the toggle/seq. + * Driver is required to synchronously cancel all transfer request. + * Stop the endpoint to force xHC to update the output context */ - /* For now just print debug to follow the situation */ - xhci_dbg(xhci, "Endpoint 0x%x ep reset callback called\n", - ep->desc.bEndpointAddress); + if (!list_empty(&ep->ring->td_list)) { + dev_err(&udev->dev, "EP not empty, refuse reset\n"); + spin_unlock_irqrestore(&xhci->lock, flags); + goto cleanup; + } + xhci_queue_stop_endpoint(xhci, stop_cmd, udev->slot_id, ep_index, 0); + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + wait_for_completion(stop_cmd->completion); + + spin_lock_irqsave(&xhci->lock, flags); + + /* config ep command clears toggle if add and drop ep flags are set */ + ctrl_ctx = xhci_get_input_control_ctx(cfg_cmd->in_ctx); + xhci_setup_input_ctx_for_config_ep(xhci, cfg_cmd->in_ctx, vdev->out_ctx, + ctrl_ctx, ep_flag, ep_flag); + xhci_endpoint_copy(xhci, cfg_cmd->in_ctx, vdev->out_ctx, ep_index); + + xhci_queue_configure_endpoint(xhci, cfg_cmd, cfg_cmd->in_ctx->dma, + udev->slot_id, false); + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + wait_for_completion(cfg_cmd->completion); + + ep->ep_state &= ~EP_SOFT_CLEAR_TOGGLE; + xhci_free_command(xhci, cfg_cmd); +cleanup: + xhci_free_command(xhci, stop_cmd); } static int xhci_check_streams_endpoint(struct xhci_hcd *xhci, diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e4d7d3d06a75..9f236da1093d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -921,6 +921,8 @@ struct xhci_virt_ep { #define EP_HAS_STREAMS (1 << 4) /* Transitioning the endpoint to not using streams, don't enqueue URBs */ #define EP_GETTING_NO_STREAMS (1 << 5) +#define EP_HARD_CLEAR_TOGGLE (1 << 6) +#define EP_SOFT_CLEAR_TOGGLE (1 << 7) /* ---- Related to URB cancellation ---- */ struct list_head cancelled_td_list; /* Watchdog timer for stop endpoint command to cancel URBs */ -- cgit v1.2.1 From 0ee78c101425aae681c631ba59c6ac7f44b1d83a Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 16 Mar 2018 16:33:06 +0200 Subject: xhci: Show what USB release number the xHC supports from protocol capablity xhci driver displays the supported xHC USB revision in a message during driver load: "Host supports USB 3.1 Enhanced SuperSpeed" Get the USB minor revision number from the xhci protocol capability. This will show the correct supported revisions for new USB 3.2 and later hosts Don't rely on the SBRN (serial bus revision number) register, it's often showing 0x30 (USB3.0) for hosts that support USB 3.1 Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 05b22b8bc19f..fe0a8377b301 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4838,6 +4838,7 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) * quirks */ struct device *dev = hcd->self.sysdev; + unsigned int minor_rev; int retval; /* Accept arbitrarily long scatter-gather lists */ @@ -4865,12 +4866,19 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) */ hcd->has_tt = 1; } else { - /* Some 3.1 hosts return sbrn 0x30, can't rely on sbrn alone */ - if (xhci->sbrn == 0x31 || xhci->usb3_rhub.min_rev >= 1) { - xhci_info(xhci, "Host supports USB 3.1 Enhanced SuperSpeed\n"); + /* + * Some 3.1 hosts return sbrn 0x30, use xhci supported protocol + * minor revision instead of sbrn + */ + minor_rev = xhci->usb3_rhub.min_rev; + if (minor_rev) { hcd->speed = HCD_USB31; hcd->self.root_hub->speed = USB_SPEED_SUPER_PLUS; } + xhci_info(xhci, "Host supports USB 3.%x %s SuperSpeed\n", + minor_rev, + minor_rev ? "Enhanced" : ""); + /* xHCI private pointer was set in xhci_pci_probe for the second * registered roothub. */ -- cgit v1.2.1 From 7bb9aedac66cc768b255e60f97a137935dd818d8 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 16 Mar 2018 16:17:23 +0200 Subject: USB: host: sl811: Re-use DEFINE_SHOW_ATTRIBUTE() macro ...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/sl811-hcd.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index fa88a903fa2e..5b061e599948 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -1381,7 +1381,7 @@ static void dump_irq(struct seq_file *s, char *label, u8 mask) (mask & SL11H_INTMASK_DP) ? " dp" : ""); } -static int sl811h_show(struct seq_file *s, void *unused) +static int sl811h_debug_show(struct seq_file *s, void *unused) { struct sl811 *sl811 = s->private; struct sl811h_ep *ep; @@ -1491,25 +1491,14 @@ static int sl811h_show(struct seq_file *s, void *unused) return 0; } - -static int sl811h_open(struct inode *inode, struct file *file) -{ - return single_open(file, sl811h_show, inode->i_private); -} - -static const struct file_operations debug_ops = { - .open = sl811h_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(sl811h_debug); /* expect just one sl811 per system */ static void create_debug_file(struct sl811 *sl811) { sl811->debug_file = debugfs_create_file("sl811h", S_IRUGO, usb_debug_root, sl811, - &debug_ops); + &sl811h_debug_fops); } static void remove_debug_file(struct sl811 *sl811) -- cgit v1.2.1 From 225b3dc92da1a3198cf687b13435fef952757a8f Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Fri, 16 Mar 2018 08:21:08 -0500 Subject: USB: wusbcore: crypto: Remove VLA usage In preparation to enabling -Wvla, remove VLA and replace it with dynamic memory allocation instead. The use of stack Variable Length Arrays needs to be avoided, as they can be a vector for stack exhaustion, which can be both a runtime bug or a security flaw. Also, in general, as code evolves it is easy to lose track of how big a VLA can get. Thus, we can end up having runtime failures that are hard to debug. Also, fixed as part of the directive to remove all VLAs from the kernel: https://lkml.org/lkml/2018/3/7/621 Notice that in this particular case, an alternative to kzalloc is kcalloc, in which case the code would look as follows instead: iv = kcalloc(crypto_skcipher_ivsize(tfm_cbc), sizeof(*iv), GFP_KERNEL); but if the data type of _iv_ never changes, or the type size is always one byte, kzalloc is good enough. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/crypto.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 4c00be2d1993..aff50eb09ca9 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -202,7 +202,7 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, struct scatterlist sg[4], sg_dst; void *dst_buf; size_t dst_size; - u8 iv[crypto_skcipher_ivsize(tfm_cbc)]; + u8 *iv; size_t zero_padding; /* @@ -224,7 +224,9 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, if (!dst_buf) goto error_dst_buf; - memset(iv, 0, sizeof(iv)); + iv = kzalloc(crypto_skcipher_ivsize(tfm_cbc), GFP_KERNEL); + if (!iv) + goto error_iv; /* Setup B0 */ scratch->b0.flags = 0x59; /* Format B0 */ @@ -276,6 +278,8 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, bytewise_xor(mic, &scratch->ax, iv, 8); result = 8; error_cbc_crypt: + kfree(iv); +error_iv: kfree(dst_buf); error_dst_buf: return result; -- cgit v1.2.1 From 7642d8386ac71af0666c425264c4d7380269f62c Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 18 Mar 2018 15:47:40 +0100 Subject: usb: dwc3: ep0: remove redundant assignment In dwc3_request *r = NULL; r = A; the first assignment has no effect. Remove it. Signed-off-by: Heinrich Schuchardt Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 18be31d5743a..5a991bca8ed7 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -814,7 +814,7 @@ out: static void dwc3_ep0_complete_data(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { - struct dwc3_request *r = NULL; + struct dwc3_request *r; struct usb_request *ur; struct dwc3_trb *trb; struct dwc3_ep *ep0; -- cgit v1.2.1 From c3a65808f04a8426481b63a4fbd9392f009f6330 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 7 Mar 2018 17:40:48 +0100 Subject: USB: serial: option: reimplement interface masking Reimplement interface masking using device flags stored directly in the device-id table. This will make it easier to add and maintain device-id entries by using a more compact and readable notation compared to the current implementation (which manages pairs of masks in separate blacklist structs). Two convenience macros are used to flag an interface as either reserved or as not supporting modem-control requests: { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM), .driver_info = NCTRL(0) | RSVD(3) }, For now, we limit the highest maskable interface number to seven, which allows for (up to 16) additional device flags to be added later should need arise. Note that this will likely need to be backported to stable in order to make future device-id backports more manageable. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 446 +++++++++++++++----------------------------- 1 file changed, 152 insertions(+), 294 deletions(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 2d8d9150da0c..b331baec3a0b 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -548,151 +548,15 @@ static void option_instat_callback(struct urb *urb); #define WETELECOM_PRODUCT_6802 0x6802 #define WETELECOM_PRODUCT_WMD300 0x6803 -struct option_blacklist_info { - /* bitmask of interface numbers blacklisted for send_setup */ - const unsigned long sendsetup; - /* bitmask of interface numbers that are reserved */ - const unsigned long reserved; -}; -static const struct option_blacklist_info four_g_w14_blacklist = { - .sendsetup = BIT(0) | BIT(1), -}; +/* Device flags */ -static const struct option_blacklist_info four_g_w100_blacklist = { - .sendsetup = BIT(1) | BIT(2), - .reserved = BIT(3), -}; +/* Interface does not support modem-control requests */ +#define NCTRL(ifnum) ((BIT(ifnum) & 0xff) << 8) -static const struct option_blacklist_info alcatel_x200_blacklist = { - .sendsetup = BIT(0) | BIT(1), - .reserved = BIT(4), -}; +/* Interface is reserved */ +#define RSVD(ifnum) ((BIT(ifnum) & 0xff) << 0) -static const struct option_blacklist_info zte_0037_blacklist = { - .sendsetup = BIT(0) | BIT(1), -}; - -static const struct option_blacklist_info zte_k3765_z_blacklist = { - .sendsetup = BIT(0) | BIT(1) | BIT(2), - .reserved = BIT(4), -}; - -static const struct option_blacklist_info zte_ad3812_z_blacklist = { - .sendsetup = BIT(0) | BIT(1) | BIT(2), -}; - -static const struct option_blacklist_info zte_mc2718_z_blacklist = { - .sendsetup = BIT(1) | BIT(2) | BIT(3) | BIT(4), -}; - -static const struct option_blacklist_info zte_mc2716_z_blacklist = { - .sendsetup = BIT(1) | BIT(2) | BIT(3), -}; - -static const struct option_blacklist_info zte_me3620_mbim_blacklist = { - .reserved = BIT(2) | BIT(3) | BIT(4), -}; - -static const struct option_blacklist_info zte_me3620_xl_blacklist = { - .reserved = BIT(3) | BIT(4) | BIT(5), -}; - -static const struct option_blacklist_info zte_zm8620_x_blacklist = { - .reserved = BIT(3) | BIT(4) | BIT(5), -}; - -static const struct option_blacklist_info huawei_cdc12_blacklist = { - .reserved = BIT(1) | BIT(2), -}; - -static const struct option_blacklist_info net_intf0_blacklist = { - .reserved = BIT(0), -}; - -static const struct option_blacklist_info net_intf1_blacklist = { - .reserved = BIT(1), -}; - -static const struct option_blacklist_info net_intf2_blacklist = { - .reserved = BIT(2), -}; - -static const struct option_blacklist_info net_intf3_blacklist = { - .reserved = BIT(3), -}; - -static const struct option_blacklist_info net_intf4_blacklist = { - .reserved = BIT(4), -}; - -static const struct option_blacklist_info net_intf5_blacklist = { - .reserved = BIT(5), -}; - -static const struct option_blacklist_info net_intf6_blacklist = { - .reserved = BIT(6), -}; - -static const struct option_blacklist_info zte_mf626_blacklist = { - .sendsetup = BIT(0) | BIT(1), - .reserved = BIT(4), -}; - -static const struct option_blacklist_info zte_1255_blacklist = { - .reserved = BIT(3) | BIT(4), -}; - -static const struct option_blacklist_info simcom_sim7100e_blacklist = { - .reserved = BIT(5) | BIT(6), -}; - -static const struct option_blacklist_info telit_me910_blacklist = { - .sendsetup = BIT(0), - .reserved = BIT(1) | BIT(3), -}; - -static const struct option_blacklist_info telit_me910_dual_modem_blacklist = { - .sendsetup = BIT(0), - .reserved = BIT(3), -}; - -static const struct option_blacklist_info telit_le910_blacklist = { - .sendsetup = BIT(0), - .reserved = BIT(1) | BIT(2), -}; - -static const struct option_blacklist_info telit_le920_blacklist = { - .sendsetup = BIT(0), - .reserved = BIT(1) | BIT(5), -}; - -static const struct option_blacklist_info telit_le920a4_blacklist_1 = { - .sendsetup = BIT(0), - .reserved = BIT(1), -}; - -static const struct option_blacklist_info telit_le922_blacklist_usbcfg0 = { - .sendsetup = BIT(2), - .reserved = BIT(0) | BIT(1) | BIT(3), -}; - -static const struct option_blacklist_info telit_le922_blacklist_usbcfg3 = { - .sendsetup = BIT(0), - .reserved = BIT(1) | BIT(2) | BIT(3), -}; - -static const struct option_blacklist_info cinterion_rmnet2_blacklist = { - .reserved = BIT(4) | BIT(5), -}; - -static const struct option_blacklist_info yuga_clm920_nc5_blacklist = { - .reserved = BIT(1) | BIT(4), -}; - -static const struct option_blacklist_info quectel_ep06_blacklist = { - .reserved = BIT(4) | BIT(5), -}; static const struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, @@ -726,26 +590,26 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GKE) }, { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) }, { USB_DEVICE(QUANTA_VENDOR_ID, 0xea42), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c05, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c1f, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c23, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173S6, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1750, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1441, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1442, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, + .driver_info = RSVD(1) | RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, + .driver_info = RSVD(1) | RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x14ac, 0xff, 0xff, 0xff), /* Huawei E1820 */ - .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4605, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, + .driver_info = RSVD(1) | RSVD(2) }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0xff, 0xff) }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x01, 0x01) }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x01, 0x02) }, @@ -1190,67 +1054,67 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */ { USB_DEVICE_AND_INTERFACE_INFO(QUALCOMM_VENDOR_ID, 0x6001, 0xff, 0xff, 0xff), /* 4G LTE usb-modem U901 */ - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ /* Quectel products using Qualcomm vendor ID */ { USB_DEVICE(QUALCOMM_VENDOR_ID, QUECTEL_PRODUCT_UC15)}, { USB_DEVICE(QUALCOMM_VENDOR_ID, QUECTEL_PRODUCT_UC20), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, /* Yuga products use Qualcomm vendor ID */ { USB_DEVICE(QUALCOMM_VENDOR_ID, YUGA_PRODUCT_CLM920_NC5), - .driver_info = (kernel_ulong_t)&yuga_clm920_nc5_blacklist }, + .driver_info = RSVD(1) | RSVD(4) }, /* Quectel products using Quectel vendor ID */ { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC21), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC25), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_BG96), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EP06), - .driver_info = (kernel_ulong_t)&quectel_ep06_blacklist }, + .driver_info = RSVD(4) | RSVD(5) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6004) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6005) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CGU_628A) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHE_628S), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_301), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_628), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_628S) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDU_680) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDU_685A) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_720S), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7002), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_629K), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7004), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7005) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CGU_629), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_629S), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_720I), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7212), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7213), - .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + .driver_info = RSVD(0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7251), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7252), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7253), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864G) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_CC864_DUAL) }, @@ -1258,38 +1122,38 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_DE910_DUAL) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UE910_V2) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG0), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 }, + .driver_info = RSVD(0) | RSVD(1) | NCTRL(2) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG1), - .driver_info = (kernel_ulong_t)&telit_le910_blacklist }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG2), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG3), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) }, { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG5, 0xff), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 }, + .driver_info = RSVD(0) | RSVD(1) | NCTRL(2) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910), - .driver_info = (kernel_ulong_t)&telit_me910_blacklist }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM), - .driver_info = (kernel_ulong_t)&telit_me910_dual_modem_blacklist }, + .driver_info = NCTRL(0) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910), - .driver_info = (kernel_ulong_t)&telit_le910_blacklist }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920), - .driver_info = (kernel_ulong_t)&telit_le920_blacklist }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(5) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1207) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1208), - .driver_info = (kernel_ulong_t)&telit_le920a4_blacklist_1 }, + .driver_info = NCTRL(0) | RSVD(1) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1211), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1212), - .driver_info = (kernel_ulong_t)&telit_le920a4_blacklist_1 }, + .driver_info = NCTRL(0) | RSVD(1) }, { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1213, 0xff) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1214), - .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 }, + .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0003, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0004, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0005, 0xff, 0xff, 0xff) }, @@ -1305,58 +1169,58 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0010, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0011, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0012, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0013, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0016, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0017, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0018, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0019, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0020, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0021, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0022, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0023, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0024, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0025, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0028, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0029, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0030, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff, - 0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_mf626_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff, 0xff, 0xff), + .driver_info = NCTRL(0) | NCTRL(1) | RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0032, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0033, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0034, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0037, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_0037_blacklist }, + .driver_info = NCTRL(0) | NCTRL(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0038, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0039, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0040, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0042, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0043, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0044, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0048, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0049, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0050, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0051, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0052, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0054, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0055, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0056, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0057, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0058, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0061, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0062, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0063, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0064, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0065, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0066, 0xff, 0xff, 0xff) }, @@ -1381,26 +1245,26 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0096, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0097, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0104, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0105, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0106, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0108, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0113, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0117, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0118, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0121, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0122, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0123, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0124, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0125, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0126, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0128, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0135, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0136, 0xff, 0xff, 0xff) }, @@ -1416,50 +1280,50 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0155, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0156, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0157, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0158, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0159, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0161, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0162, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0164, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0165, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0167, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0189, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0191, 0xff, 0xff, 0xff), /* ZTE EuFi890 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0196, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0197, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0199, 0xff, 0xff, 0xff), /* ZTE MF820S */ - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0200, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0201, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0254, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0257, 0xff, 0xff, 0xff), /* ZTE MF821 */ - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0265, 0xff, 0xff, 0xff), /* ONDA MT8205 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0284, 0xff, 0xff, 0xff), /* ZTE MF880 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0317, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0326, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0330, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0395, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0412, 0xff, 0xff, 0xff), /* Telewell TW-LTE 4G */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0414, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0417, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1012, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1018, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1021, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1057, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1058, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1059, 0xff, 0xff, 0xff) }, @@ -1576,23 +1440,23 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1170, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1244, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1245, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1246, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1247, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1248, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1249, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1250, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1251, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1252, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1253, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1254, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1255, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_1255_blacklist }, + .driver_info = RSVD(3) | RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1256, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1257, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1258, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1259, 0xff, 0xff, 0xff) }, @@ -1607,7 +1471,7 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1268, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1269, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1270, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1271, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1272, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1273, 0xff, 0xff, 0xff) }, @@ -1643,17 +1507,17 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1303, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1333, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1401, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1402, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1424, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1425, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1426, 0xff, 0xff, 0xff), /* ZTE MF91 */ - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1428, 0xff, 0xff, 0xff), /* Telewell TW-LTE 4G v2 */ - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1533, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1534, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1535, 0xff, 0xff, 0xff) }, @@ -1671,8 +1535,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1596, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1598, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1600, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff, - 0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_k3765_z_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff, 0xff, 0xff), + .driver_info = NCTRL(0) | NCTRL(1) | NCTRL(2) | RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2003, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0014, 0xff, 0xff, 0xff) }, /* ZTE CDMA products */ @@ -1683,20 +1547,20 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0073, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0094, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0130, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + .driver_info = RSVD(1) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0133, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0141, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0147, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0152, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0168, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0170, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0176, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0178, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff42, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff43, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff44, 0xff, 0xff, 0xff) }, @@ -1848,19 +1712,19 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710T, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2718, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_mc2718_z_blacklist }, + .driver_info = NCTRL(1) | NCTRL(2) | NCTRL(3) | NCTRL(4) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AD3812, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist }, + .driver_info = NCTRL(0) | NCTRL(1) | NCTRL(2) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist }, + .driver_info = NCTRL(1) | NCTRL(2) | NCTRL(3) }, { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_L), - .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist }, + .driver_info = RSVD(3) | RSVD(4) | RSVD(5) }, { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_MBIM), - .driver_info = (kernel_ulong_t)&zte_me3620_mbim_blacklist }, + .driver_info = RSVD(2) | RSVD(3) | RSVD(4) }, { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_X), - .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist }, + .driver_info = RSVD(3) | RSVD(4) | RSVD(5) }, { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ZM8620_X), - .driver_info = (kernel_ulong_t)&zte_zm8620_x_blacklist }, + .driver_info = RSVD(3) | RSVD(4) | RSVD(5) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) }, @@ -1880,37 +1744,34 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(ALINK_VENDOR_ID, ALINK_PRODUCT_PH300) }, { USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) }, { USB_DEVICE(ALINK_VENDOR_ID, SIMCOM_PRODUCT_SIM7100E), - .driver_info = (kernel_ulong_t)&simcom_sim7100e_blacklist }, + .driver_info = RSVD(5) | RSVD(6) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S_X200), - .driver_info = (kernel_ulong_t)&alcatel_x200_blacklist - }, + .driver_info = NCTRL(0) | NCTRL(1) | RSVD(4) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X220_X500D), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE(ALCATEL_VENDOR_ID, 0x0052), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE(ALCATEL_VENDOR_ID, 0x00b6), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE(ALCATEL_VENDOR_ID, 0x00b7), - .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + .driver_info = RSVD(5) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_L100V), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_L800MA), - .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, + .driver_info = RSVD(2) }, { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) }, { USB_DEVICE(TLAYTECH_VENDOR_ID, TLAYTECH_PRODUCT_TEU800) }, { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14), - .driver_info = (kernel_ulong_t)&four_g_w14_blacklist - }, + .driver_info = NCTRL(0) | NCTRL(1) }, { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W100), - .driver_info = (kernel_ulong_t)&four_g_w100_blacklist - }, + .driver_info = NCTRL(1) | NCTRL(2) | RSVD(3) }, {USB_DEVICE(LONGCHEER_VENDOR_ID, FUJISOFT_PRODUCT_FS040U), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist}, + .driver_info = RSVD(3)}, { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, SPEEDUP_PRODUCT_SU9800, 0xff) }, { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, 0x9801, 0xff), - .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + .driver_info = RSVD(3) }, { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, 0x9803, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(LONGCHEER_VENDOR_ID, ZOOM_PRODUCT_4597) }, { USB_DEVICE(LONGCHEER_VENDOR_ID, IBALL_3_5G_CONNECT) }, { USB_DEVICE(HAIER_VENDOR_ID, HAIER_PRODUCT_CE100) }, @@ -1936,14 +1797,14 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_E) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_P) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX, 0xff) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLXX), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8_2RMNET, 0xff), - .driver_info = (kernel_ulong_t)&cinterion_rmnet2_blacklist }, + .driver_info = RSVD(4) | RSVD(5) }, { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8_AUDIO, 0xff), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_2RMNET, 0xff) }, { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_AUDIO, 0xff) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) }, @@ -1953,20 +1814,20 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) }, /* HC28 enumerates with Siemens or Cinterion VID depending on FW revision */ { USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC28_MDMNET) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD100), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD120), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD140), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD145) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD155), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD200), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD160), - .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + .driver_info = RSVD(6) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD500), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(CELOT_VENDOR_ID, CELOT_PRODUCT_CT680M) }, /* CT-650 CDMA 450 1xEVDO modem */ { USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_GT_B3730, USB_CLASS_CDC_DATA, 0x00, 0x00) }, /* Samsung GT-B3730 LTE USB modem.*/ { USB_DEVICE(YUGA_VENDOR_ID, YUGA_PRODUCT_CEM600) }, @@ -2043,9 +1904,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T_600E) }, { USB_DEVICE_AND_INTERFACE_INFO(TPLINK_VENDOR_ID, TPLINK_PRODUCT_LTE, 0xff, 0x00, 0x00) }, /* TP-Link LTE Module */ { USB_DEVICE(TPLINK_VENDOR_ID, TPLINK_PRODUCT_MA180), - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(TPLINK_VENDOR_ID, 0x9000), /* TP-Link MA260 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE(CHANGHONG_VENDOR_ID, CHANGHONG_PRODUCT_CH690) }, { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d01, 0xff) }, /* D-Link DWM-156 (variant) */ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d02, 0xff) }, @@ -2053,9 +1914,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) }, /* D-Link DWM-158 */ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d0e, 0xff) }, /* D-Link DWM-157 C1 */ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff), /* D-Link DWM-222 */ - .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + .driver_info = RSVD(4) }, { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/A3 */ @@ -2115,7 +1976,7 @@ static int option_probe(struct usb_serial *serial, struct usb_interface_descriptor *iface_desc = &serial->interface->cur_altsetting->desc; struct usb_device_descriptor *dev_desc = &serial->dev->descriptor; - const struct option_blacklist_info *blacklist; + unsigned long device_flags = id->driver_info; /* Never bind to the CD-Rom emulation interface */ if (iface_desc->bInterfaceClass == 0x08) @@ -2126,9 +1987,7 @@ static int option_probe(struct usb_serial *serial, * the same class/subclass/protocol as the serial interfaces. Look at * the Windows driver .INF files for reserved interface numbers. */ - blacklist = (void *)id->driver_info; - if (blacklist && test_bit(iface_desc->bInterfaceNumber, - &blacklist->reserved)) + if (device_flags & RSVD(iface_desc->bInterfaceNumber)) return -ENODEV; /* * Don't bind network interface on Samsung GT-B3730, it is handled by @@ -2139,8 +1998,8 @@ static int option_probe(struct usb_serial *serial, iface_desc->bInterfaceClass != USB_CLASS_CDC_DATA) return -ENODEV; - /* Store the blacklist info so we can use it during attach. */ - usb_set_serial_data(serial, (void *)blacklist); + /* Store the device flags so we can use them during attach. */ + usb_set_serial_data(serial, (void *)device_flags); return 0; } @@ -2148,22 +2007,21 @@ static int option_probe(struct usb_serial *serial, static int option_attach(struct usb_serial *serial) { struct usb_interface_descriptor *iface_desc; - const struct option_blacklist_info *blacklist; struct usb_wwan_intf_private *data; + unsigned long device_flags; data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL); if (!data) return -ENOMEM; - /* Retrieve blacklist info stored at probe. */ - blacklist = usb_get_serial_data(serial); + /* Retrieve device flags stored at probe. */ + device_flags = (unsigned long)usb_get_serial_data(serial); iface_desc = &serial->interface->cur_altsetting->desc; - if (!blacklist || !test_bit(iface_desc->bInterfaceNumber, - &blacklist->sendsetup)) { + if (!(device_flags & NCTRL(iface_desc->bInterfaceNumber))) data->use_send_setup = 1; - } + spin_lock_init(&data->susp_lock); usb_set_serial_data(serial, data); -- cgit v1.2.1 From a0bf2ef9783d55f60bac1492f225c3a4fe2b363c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 7 Mar 2018 11:49:55 +0100 Subject: USB: serial: option: drop redundant interface-class test Drop redundant interface-class test for Samsung GT-B3730 modems for which we only match and probe the CDC data interface. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index b331baec3a0b..1f5145d714d6 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1975,7 +1975,6 @@ static int option_probe(struct usb_serial *serial, { struct usb_interface_descriptor *iface_desc = &serial->interface->cur_altsetting->desc; - struct usb_device_descriptor *dev_desc = &serial->dev->descriptor; unsigned long device_flags = id->driver_info; /* Never bind to the CD-Rom emulation interface */ @@ -1989,14 +1988,6 @@ static int option_probe(struct usb_serial *serial, */ if (device_flags & RSVD(iface_desc->bInterfaceNumber)) return -ENODEV; - /* - * Don't bind network interface on Samsung GT-B3730, it is handled by - * a separate module. - */ - if (dev_desc->idVendor == cpu_to_le16(SAMSUNG_VENDOR_ID) && - dev_desc->idProduct == cpu_to_le16(SAMSUNG_PRODUCT_GT_B3730) && - iface_desc->bInterfaceClass != USB_CLASS_CDC_DATA) - return -ENODEV; /* Store the device flags so we can use them during attach. */ usb_set_serial_data(serial, (void *)device_flags); -- cgit v1.2.1 From 9b284d8e648b9a6a297409d2adb34bcebf695818 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 7 Mar 2018 11:49:56 +0100 Subject: USB: serial: option: use mass-storage class define Use the USB class define rather than a magic number when refusing to bind to mass-storage interfaces. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 1f5145d714d6..c3f252283ab9 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1978,7 +1978,7 @@ static int option_probe(struct usb_serial *serial, unsigned long device_flags = id->driver_info; /* Never bind to the CD-Rom emulation interface */ - if (iface_desc->bInterfaceClass == 0x08) + if (iface_desc->bInterfaceClass == USB_CLASS_MASS_STORAGE) return -ENODEV; /* -- cgit v1.2.1 From edb92eaf1d478ac52e7d258af35739c76c03efea Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:36:17 -0700 Subject: usb: core: urb: Check SSP isoc ep comp descriptor The maximum bytes per interval for USB SuperSpeed Plus can be set by isoc endpoint companion descriptor when it is above 48K. If the descriptor is provided, then use its value. USB 3.1 spec 9.6.8 Acked-by: Felipe Balbi Signed-off-by: Thinh Nguyen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/urb.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 796c9b149728..f51750bcd152 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -433,6 +433,14 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) max *= mult; } + if (dev->speed == USB_SPEED_SUPER_PLUS && + USB_SS_SSP_ISOC_COMP(ep->ss_ep_comp.bmAttributes)) { + struct usb_ssp_isoc_ep_comp_descriptor *isoc_ep_comp; + + isoc_ep_comp = &ep->ssp_isoc_ep_comp; + max = le32_to_cpu(isoc_ep_comp->dwBytesPerInterval); + } + /* "high bandwidth" mode, 1-3 packets/uframe? */ if (dev->speed == USB_SPEED_HIGH) max *= usb_endpoint_maxp_mult(&ep->desc); -- cgit v1.2.1 From ca5a2e9a774b0a18815f23cd9cbb923966a2d8bc Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 19 Mar 2018 13:06:02 -0700 Subject: MAINTAINERS: Update maintainer for dwc2 Update to show Minas Harutyunyan as the new maintainer for dwc2. Signed-off-by: John Youn Acked-by: Minas Harutyunyan Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 205c8fc12a9c..2bee7ac161e8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4121,7 +4121,7 @@ S: Supported F: drivers/mtd/nand/denali* DESIGNWARE USB2 DRD IP DRIVER -M: John Youn +M: Minas Harutyunyan L: linux-usb@vger.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git S: Maintained -- cgit v1.2.1 From 027bd6cafd9a1e3a109b5e5682c85ac84e804a8d Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Tue, 20 Mar 2018 00:26:06 +0800 Subject: usb: core: Add "quirks" parameter for usbcore Trying quirks in usbcore needs to rebuild the driver or the entire kernel if it's builtin. It can save a lot of time if usbcore has similar ability like "usbhid.quirks=" and "usb-storage.quirks=". Rename the original quirk detection function to "static" as we introduce this new "dynamic" function. Now users can use "usbcore.quirks=" as short term workaround before the next kernel release. Also, the quirk parameter can XOR the builtin quirks for debugging purpose. This is inspired by usbhid and usb-storage. Signed-off-by: Kai-Heng Feng Signed-off-by: Greg Kroah-Hartman --- Documentation/admin-guide/kernel-parameters.txt | 56 ++++++++ drivers/usb/core/quirks.c | 178 +++++++++++++++++++++++- drivers/usb/core/usb.c | 1 + drivers/usb/core/usb.h | 1 + 4 files changed, 231 insertions(+), 5 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1d1d53f85ddd..e00cdd313dc2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4368,6 +4368,62 @@ usbcore.nousb [USB] Disable the USB subsystem + usbcore.quirks= + [USB] A list of quirk entries to augment the built-in + usb core quirk list. List entries are separated by + commas. Each entry has the form + VendorID:ProductID:Flags. The IDs are 4-digit hex + numbers and Flags is a set of letters. Each letter + will change the built-in quirk; setting it if it is + clear and clearing it if it is set. The letters have + the following meanings: + a = USB_QUIRK_STRING_FETCH_255 (string + descriptors must not be fetched using + a 255-byte read); + b = USB_QUIRK_RESET_RESUME (device can't resume + correctly so reset it instead); + c = USB_QUIRK_NO_SET_INTF (device can't handle + Set-Interface requests); + d = USB_QUIRK_CONFIG_INTF_STRINGS (device can't + handle its Configuration or Interface + strings); + e = USB_QUIRK_RESET (device can't be reset + (e.g morph devices), don't use reset); + f = USB_QUIRK_HONOR_BNUMINTERFACES (device has + more interface descriptions than the + bNumInterfaces count, and can't handle + talking to these interfaces); + g = USB_QUIRK_DELAY_INIT (device needs a pause + during initialization, after we read + the device descriptor); + h = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL (For + high speed and super speed interrupt + endpoints, the USB 2.0 and USB 3.0 spec + require the interval in microframes (1 + microframe = 125 microseconds) to be + calculated as interval = 2 ^ + (bInterval-1). + Devices with this quirk report their + bInterval as the result of this + calculation instead of the exponent + variable used in the calculation); + i = USB_QUIRK_DEVICE_QUALIFIER (device can't + handle device_qualifier descriptor + requests); + j = USB_QUIRK_IGNORE_REMOTE_WAKEUP (device + generates spurious wakeup, ignore + remote wakeup capability); + k = USB_QUIRK_NO_LPM (device can't handle Link + Power Management); + l = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL + (Device reports its bInterval as linear + frames instead of the USB 2.0 + calculation); + m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs + to be disconnected before suspend to + prevent spurious wakeup) + Example: quirks=0781:5580:bk,0a5c:5834:gij + usbhid.mousepoll= [USBHID] The interval which mice are to be polled at. diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 54b019e267c5..6fb8d5433268 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -6,11 +6,149 @@ * Copyright (c) 2007 Greg Kroah-Hartman */ +#include #include #include #include #include "usb.h" +struct quirk_entry { + u16 vid; + u16 pid; + u32 flags; +}; + +static DEFINE_MUTEX(quirk_mutex); + +static struct quirk_entry *quirk_list; +static unsigned int quirk_count; + +static char quirks_param[128]; + +static int quirks_param_set(const char *val, const struct kernel_param *kp) +{ + char *p, *field; + u16 vid, pid; + u32 flags; + size_t i; + + mutex_lock(&quirk_mutex); + + if (!val || !*val) { + quirk_count = 0; + kfree(quirk_list); + quirk_list = NULL; + goto unlock; + } + + for (quirk_count = 1, i = 0; val[i]; i++) + if (val[i] == ',') + quirk_count++; + + if (quirk_list) { + kfree(quirk_list); + quirk_list = NULL; + } + + quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry), + GFP_KERNEL); + if (!quirk_list) { + mutex_unlock(&quirk_mutex); + return -ENOMEM; + } + + for (i = 0, p = (char *)val; p && *p;) { + /* Each entry consists of VID:PID:flags */ + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &vid)) + break; + + field = strsep(&p, ":"); + if (!field) + break; + + if (kstrtou16(field, 16, &pid)) + break; + + field = strsep(&p, ","); + if (!field || !*field) + break; + + /* Collect the flags */ + for (flags = 0; *field; field++) { + switch (*field) { + case 'a': + flags |= USB_QUIRK_STRING_FETCH_255; + break; + case 'b': + flags |= USB_QUIRK_RESET_RESUME; + break; + case 'c': + flags |= USB_QUIRK_NO_SET_INTF; + break; + case 'd': + flags |= USB_QUIRK_CONFIG_INTF_STRINGS; + break; + case 'e': + flags |= USB_QUIRK_RESET; + break; + case 'f': + flags |= USB_QUIRK_HONOR_BNUMINTERFACES; + break; + case 'g': + flags |= USB_QUIRK_DELAY_INIT; + break; + case 'h': + flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL; + break; + case 'i': + flags |= USB_QUIRK_DEVICE_QUALIFIER; + break; + case 'j': + flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP; + break; + case 'k': + flags |= USB_QUIRK_NO_LPM; + break; + case 'l': + flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL; + break; + case 'm': + flags |= USB_QUIRK_DISCONNECT_SUSPEND; + break; + /* Ignore unrecognized flag characters */ + } + } + + quirk_list[i++] = (struct quirk_entry) + { .vid = vid, .pid = pid, .flags = flags }; + } + + if (i < quirk_count) + quirk_count = i; + +unlock: + mutex_unlock(&quirk_mutex); + + return param_set_copystring(val, kp); +} + +static const struct kernel_param_ops quirks_param_ops = { + .set = quirks_param_set, + .get = param_get_string, +}; + +static struct kparam_string quirks_param_string = { + .maxlen = sizeof(quirks_param), + .string = quirks_param, +}; + +module_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644); +MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks"); + /* Lists of quirky USB devices, split in device quirks and interface quirks. * Device quirks are applied at the very beginning of the enumeration process, * right after reading the device descriptor. They can thus only match on device @@ -321,8 +459,8 @@ static int usb_amd_resume_quirk(struct usb_device *udev) return 0; } -static u32 __usb_detect_quirks(struct usb_device *udev, - const struct usb_device_id *id) +static u32 usb_detect_static_quirks(struct usb_device *udev, + const struct usb_device_id *id) { u32 quirks = 0; @@ -340,21 +478,43 @@ static u32 __usb_detect_quirks(struct usb_device *udev, return quirks; } +static u32 usb_detect_dynamic_quirks(struct usb_device *udev) +{ + u16 vid = le16_to_cpu(udev->descriptor.idVendor); + u16 pid = le16_to_cpu(udev->descriptor.idProduct); + int i, flags = 0; + + mutex_lock(&quirk_mutex); + + for (i = 0; i < quirk_count; i++) { + if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { + flags = quirk_list[i].flags; + break; + } + } + + mutex_unlock(&quirk_mutex); + + return flags; +} + /* * Detect any quirks the device has, and do any housekeeping for it if needed. */ void usb_detect_quirks(struct usb_device *udev) { - udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); + udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); /* * Pixart-based mice would trigger remote wakeup issue on AMD * Yangtze chipset, so set them as RESET_RESUME flag. */ if (usb_amd_resume_quirk(udev)) - udev->quirks |= __usb_detect_quirks(udev, + udev->quirks |= usb_detect_static_quirks(udev, usb_amd_resume_quirk_list); + udev->quirks ^= usb_detect_dynamic_quirks(udev); + if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", udev->quirks); @@ -373,7 +533,7 @@ void usb_detect_interface_quirks(struct usb_device *udev) { u32 quirks; - quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); + quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); if (quirks == 0) return; @@ -381,3 +541,11 @@ void usb_detect_interface_quirks(struct usb_device *udev) quirks); udev->quirks |= quirks; } + +void usb_release_quirk_list(void) +{ + mutex_lock(&quirk_mutex); + kfree(quirk_list); + quirk_list = NULL; + mutex_unlock(&quirk_mutex); +} diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 2f5fbc56a9dd..0adb6345ff2e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -1259,6 +1259,7 @@ static void __exit usb_exit(void) if (usb_disabled()) return; + usb_release_quirk_list(); usb_deregister_device_driver(&usb_generic_driver); usb_major_cleanup(); usb_deregister(&usbfs_driver); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 149cc7480971..546a2219454b 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -36,6 +36,7 @@ extern void usb_deauthorize_interface(struct usb_interface *); extern void usb_authorize_interface(struct usb_interface *); extern void usb_detect_quirks(struct usb_device *udev); extern void usb_detect_interface_quirks(struct usb_device *udev); +extern void usb_release_quirk_list(void); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, -- cgit v1.2.1 From e3cb7bde9a6a8bfdee5917facf00afb98fee1821 Mon Sep 17 00:00:00 2001 From: Daniel Gimpelevich Date: Tue, 20 Mar 2018 03:58:47 -0700 Subject: USB: misc: uss720: more vendor/product ID's Reporting two more VID/PID pairs that work with this driver, having used an informational webpage as a buying guide now. The page listed additional working VID/PID pairs but did not include these two. None were upstreamed. Also taking this opportunity to sort the pairs numerically. Of the two such cables now in my possession, one is white, bearing the In-System Design ISD-103 label on one side, sold as an Epson CAEUL0002 "USB to Parallel Smart Cable For Apple Macintosh Computers" (04b8:0002), and the other is black, bearing the In-System Design ISD-101 label on one side, sold as an early Belkin F5U002 (05ab:0002). Signed-off-by: Daniel Gimpelevich Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/uss720.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 263c97fec708..de9a502491c2 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -769,10 +769,15 @@ static void uss720_disconnect(struct usb_interface *intf) /* table of cables that work through this driver */ static const struct usb_device_id uss720_table[] = { { USB_DEVICE(0x047e, 0x1001) }, + { USB_DEVICE(0x04b8, 0x0002) }, + { USB_DEVICE(0x04b8, 0x0003) }, + { USB_DEVICE(0x050d, 0x0002) }, + { USB_DEVICE(0x050d, 0x1202) }, { USB_DEVICE(0x0557, 0x2001) }, + { USB_DEVICE(0x05ab, 0x0002) }, + { USB_DEVICE(0x06c6, 0x0100) }, { USB_DEVICE(0x0729, 0x1284) }, { USB_DEVICE(0x1293, 0x0002) }, - { USB_DEVICE(0x050d, 0x0002) }, { } /* Terminating entry */ }; -- cgit v1.2.1 From de948a74ad6f0eefddf36d765b8f2dd6df82caa0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 22 Mar 2018 10:45:20 +0200 Subject: usb: dwc3: Makefile: fix link error on randconfig If building a kernel without FTRACE but with TRACING, dwc3.ko fails to link due to missing trace events. Fix this by using the correct Kconfig symbol on Makefile. Reported-by: Randy Dunlap Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 7ac725038f8d..025bc68094fc 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -6,7 +6,7 @@ obj-$(CONFIG_USB_DWC3) += dwc3.o dwc3-y := core.o -ifneq ($(CONFIG_FTRACE),) +ifneq ($(CONFIG_TRACING),) dwc3-y += trace.o endif -- cgit v1.2.1 From cabdf83dadfb3d83eec31e0f0638a92dbd716435 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Mon, 19 Mar 2018 13:07:35 -0700 Subject: usb: dwc3: pci: Properly cleanup resource Platform device is allocated before adding resources. Make sure to properly cleanup on error case. Cc: Fixes: f1c7e7108109 ("usb: dwc3: convert to pcim_enable_device()") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 3ba11136ebf0..c961a94d136b 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -222,7 +222,7 @@ static int dwc3_pci_probe(struct pci_dev *pci, ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); - return ret; + goto err; } dwc->pci = pci; -- cgit v1.2.1 From fab3833338779e1e668bd58d1f76d601657304b8 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:33:48 -0700 Subject: usb: dwc3: Add SoftReset PHY synchonization delay From DWC_usb31 programming guide section 1.3.2, once DWC3_DCTL_CSFTRST bit is cleared, we must wait at least 50ms before accessing the PHY domain (synchronization delay). Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index e8890c0201a5..5491d9678d70 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -244,7 +244,7 @@ static int dwc3_core_soft_reset(struct dwc3 *dwc) do { reg = dwc3_readl(dwc->regs, DWC3_DCTL); if (!(reg & DWC3_DCTL_CSFTRST)) - return 0; + goto done; udelay(1); } while (--retries); @@ -253,6 +253,17 @@ static int dwc3_core_soft_reset(struct dwc3 *dwc) phy_exit(dwc->usb2_generic_phy); return -ETIMEDOUT; + +done: + /* + * For DWC_usb31 controller, once DWC3_DCTL_CSFTRST bit is cleared, + * we must wait at least 50ms before accessing the PHY domain + * (synchronization delay). DWC_usb31 programming guide section 1.3.2. + */ + if (dwc3_is_usb31(dwc)) + msleep(50); + + return 0; } /* -- cgit v1.2.1 From 0cab8d26d6e5e053b2bed3356992aaa71dc93628 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:33:54 -0700 Subject: usb: dwc3: Update DWC_usb31 GTXFIFOSIZ reg fields Update two GTXFIFOSIZ bit fields for the DWC_usb31 controller. TXFDEP is a 15-bit value instead of 16-bit value, and bit 15 is TXFRAMNUM. The GTXFIFOSIZ register for DWC_usb31 is as follows: +-------+-----------+----------------------------------+ | BITS | Name | Description | +=======+===========+==================================+ | 31:16 | TXFSTADDR | Transmit FIFOn RAM Start Address | | 15 | TXFRAMNUM | Asynchronous/Periodic TXFIFO | | 14:0 | TXFDEP | TXFIFO Depth | +-------+-----------+----------------------------------+ Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 09243a680a0d..1ecdc062df58 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -255,6 +255,8 @@ #define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1) /* Global TX Fifo Size Register */ +#define DWC31_GTXFIFOSIZ_TXFRAMNUM BIT(15) /* DWC_usb31 only */ +#define DWC31_GTXFIFOSIZ_TXFDEF(n) ((n) & 0x7fff) /* DWC_usb31 only */ #define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff) #define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) -- cgit v1.2.1 From d548a61767fad7a0e6d89b118daeed2f5b8a8c2f Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:34:00 -0700 Subject: usb: dwc3: Check IP revision for GTXFIFOSIZ DWC_usb31 controller has different GTXFIFOSIZE bit field for TXFDEF. Check for DWC_usb31 IP revision to read the appropriate bit fields. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7c3a6e4ea2a6..1431a88437af 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2118,7 +2118,10 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 total) mdwidth /= 8; size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num)); - size = DWC3_GTXFIFOSIZ_TXFDEF(size); + if (dwc3_is_usb31(dwc)) + size = DWC31_GTXFIFOSIZ_TXFDEF(size); + else + size = DWC3_GTXFIFOSIZ_TXFDEF(size); /* FIFO Depth is in MDWDITH bytes. Multiply */ size *= mdwidth; -- cgit v1.2.1 From 2fbc5bdc8fd1afa6d47223f6a4251f04c7d8fe7c Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:34:07 -0700 Subject: usb: dwc3: Add DWC_usb31 GRXTHRCFG bit fields Add new GRXTHRCFG bit field macros for DWC_usb31. The GRXTHRCFG register fields for DWC_usb31 is as follows: +-------+--------------------------+----------------------------------+ | BITS | Name | Description | +=======+==========================+==================================+ | 31:27 | reserved | | | 26 | UsbRxPktCntSel | Async ESS receive packet | | | | threshold enable | | 25:21 | UsbRxPktCnt | Async ESS receive packet | | | | threshold count | | 20:16 | UsbMaxRxBurstSize | Async ESS Max receive burst size | | 15 | UsbRxThrNumPktSel_HS_Prd | HS high bandwidth periodic | | | | receive packet threshold enable | | 14:13 | UsbRxThrNumPkt_HS_Prd | HS high bandwidth periodic | | | | receive packet threshold count | | 12:11 | reserved | | | 10 | UsbRxThrNumPktSel_Prd | Periodic ESS receive packet | | | | threshold enable | | 9:5 | UsbRxThrNumPkt_Prd | Periodic ESS receive packet | | | | threshold count | | 4:0 | UsbMaxRxBurstSize_Prd | Max periodic ESS RX burst size | +-------+--------------------------+----------------------------------+ Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 1ecdc062df58..8c3f28f3eff8 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -178,6 +178,16 @@ #define DWC3_GRXTHRCFG_RXPKTCNT(n) (((n) & 0xf) << 24) #define DWC3_GRXTHRCFG_PKTCNTSEL BIT(29) +/* Global RX Threshold Configuration Register for DWC_usb31 only */ +#define DWC31_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 16) +#define DWC31_GRXTHRCFG_RXPKTCNT(n) (((n) & 0x1f) << 21) +#define DWC31_GRXTHRCFG_PKTCNTSEL BIT(26) +#define DWC31_RXTHRNUMPKTSEL_HS_PRD BIT(15) +#define DWC31_RXTHRNUMPKT_HS_PRD(n) (((n) & 0x3) << 13) +#define DWC31_RXTHRNUMPKTSEL_PRD BIT(10) +#define DWC31_RXTHRNUMPKT_PRD(n) (((n) & 0x1f) << 5) +#define DWC31_MAXRXBURSTSIZE_PRD(n) ((n) & 0x1f) + /* Global Configuration Register */ #define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) #define DWC3_GCTL_U2RSTECN BIT(16) -- cgit v1.2.1 From 01b0e2cc7d89b6aa4084993634b3ea673caff4e8 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:34:13 -0700 Subject: usb: dwc3: gadget: Check IP revision for GRXTHRCFG DWC_usb31 controller has a different UsbRxPktCnt bit fields from GRXTHRCFG register. Check for DWC_usb31 IP revision to read the appropriate value. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1431a88437af..19cf9c0eef12 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1858,7 +1858,11 @@ static int __dwc3_gadget_start(struct dwc3 *dwc) * bursts of data without going through any sort of endpoint throttling. */ reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); - reg &= ~DWC3_GRXTHRCFG_PKTCNTSEL; + if (dwc3_is_usb31(dwc)) + reg &= ~DWC31_GRXTHRCFG_PKTCNTSEL; + else + reg &= ~DWC3_GRXTHRCFG_PKTCNTSEL; + dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); dwc3_gadget_setup_nump(dwc); -- cgit v1.2.1 From 6743e817a4de3b70354dde588a3382f7202e5fa2 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:34:20 -0700 Subject: usb: dwc3: Add DWC_usb31 GTXTHRCFG reg fields Add new GTXTHRCFG bit field macros for DWC_usb31. The GTXTHRCFG register fields for DWC_usb31 is as follows: +-------+--------------------------+-----------------------------------+ | BITS | Name | Description | +=======+==========================+===================================+ | 31:27 | reserved | | | 26 | UsbTxPktCntSel | Async ESS transmit packet | | | | threshold enable | | 25:21 | UsbTxPktCnt | Async ESS transmit packet | | | | threshold count | | 20:16 | UsbMaxTxBurstSize | Async ESS Max transmit burst size | | 15 | UsbTxThrNumPktSel_HS_Prd | HS high bandwidth periodic | | | | transmit packet threshold enable | | 14:13 | UsbTxThrNumPkt_HS_Prd | HS high bandwidth periodic | | | | transmit packet threshold count | | 12:11 | reserved | | | 10 | UsbTxThrNumPktSel_Prd | Periodic ESS transmit packet | | | | threshold enable | | 9:5 | UsbTxThrNumPkt_Prd | Periodic ESS transmit packet | | | | threshold count | | 4:0 | UsbMaxTxBurstSize_Prd | Max periodic ESS TX burst size | +-------+--------------------------+-----------------------------------+ Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 8c3f28f3eff8..ce9edcf17738 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -188,6 +188,16 @@ #define DWC31_RXTHRNUMPKT_PRD(n) (((n) & 0x1f) << 5) #define DWC31_MAXRXBURSTSIZE_PRD(n) ((n) & 0x1f) +/* Global TX Threshold Configuration Register for DWC_usb31 only */ +#define DWC31_GTXTHRCFG_MAXTXBURSTSIZE(n) (((n) & 0x1f) << 16) +#define DWC31_GTXTHRCFG_TXPKTCNT(n) (((n) & 0x1f) << 21) +#define DWC31_GTXTHRCFG_PKTCNTSEL BIT(26) +#define DWC31_TXTHRNUMPKTSEL_HS_PRD BIT(15) +#define DWC31_TXTHRNUMPKT_HS_PRD(n) (((n) & 0x3) << 13) +#define DWC31_TXTHRNUMPKTSEL_PRD BIT(10) +#define DWC31_TXTHRNUMPKT_PRD(n) (((n) & 0x1f) << 5) +#define DWC31_MAXTXBURSTSIZE_PRD(n) ((n) & 0x1f) + /* Global Configuration Register */ #define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) #define DWC3_GCTL_U2RSTECN BIT(16) -- cgit v1.2.1 From 48f80609e536bc9be12c64e4c6c69625baee7b02 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:35:38 -0700 Subject: usb: dwc3: Make TX/RX threshold configurable DWC_usb31 periodic transfer at 48K+ bytes per interval may need modification to the TX/RX packet threshold to achieve optimal result. Add properties to make it configurable. By default, periodic ESS TX and RX threshold are not enabled. To enable TX or RX threshold (host mode only), both packet threshold count and max burst size properties must be set to a valid non-zero value 1-16. DWC_usb31 programming guide section 1.2.3 and 1.2.4. Cc: John Youn Reviewed-by: Rob Herring Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- Documentation/devicetree/bindings/usb/dwc3.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt index 44e8bab159ad..0dbd3083e7dd 100644 --- a/Documentation/devicetree/bindings/usb/dwc3.txt +++ b/Documentation/devicetree/bindings/usb/dwc3.txt @@ -57,6 +57,22 @@ Optional properties: - snps,quirk-frame-length-adjustment: Value for GFLADJ_30MHZ field of GFLADJ register for post-silicon frame length adjustment when the fladj_30mhz_sdbnd signal is invalid or incorrect. + - snps,rx-thr-num-pkt-prd: periodic ESS RX packet threshold count - host mode + only. Set this and rx-max-burst-prd to a valid, + non-zero value 1-16 (DWC_usb31 programming guide + section 1.2.4) to enable periodic ESS RX threshold. + - snps,rx-max-burst-prd: max periodic ESS RX burst size - host mode only. Set + this and rx-thr-num-pkt-prd to a valid, non-zero value + 1-16 (DWC_usb31 programming guide section 1.2.4) to + enable periodic ESS RX threshold. + - snps,tx-thr-num-pkt-prd: periodic ESS TX packet threshold count - host mode + only. Set this and tx-max-burst-prd to a valid, + non-zero value 1-16 (DWC_usb31 programming guide + section 1.2.3) to enable periodic ESS TX threshold. + - snps,tx-max-burst-prd: max periodic ESS TX burst size - host mode only. Set + this and tx-thr-num-pkt-prd to a valid, non-zero value + 1-16 (DWC_usb31 programming guide section 1.2.3) to + enable periodic ESS TX threshold. - tx-fifo-resize: determines if the FIFO *has* to be reallocated. -- cgit v1.2.1 From 938a5ad1d3055c6d3993e99557477f5cd5ce3f64 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:35:44 -0700 Subject: usb: dwc3: Check for ESS TX/RX threshold config Check and configure TX/RX threshold for DWC_usb31. Update dwc3 structure with new fields to store these threshold configurations. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc3/core.h | 8 +++++++ 2 files changed, 63 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 5491d9678d70..7c8d3bedf802 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -872,6 +872,43 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); } + /* + * Must config both number of packets and max burst settings to enable + * RX and/or TX threshold. + */ + if (dwc3_is_usb31(dwc) && dwc->dr_mode == USB_DR_MODE_HOST) { + u8 rx_thr_num = dwc->rx_thr_num_pkt_prd; + u8 rx_maxburst = dwc->rx_max_burst_prd; + u8 tx_thr_num = dwc->tx_thr_num_pkt_prd; + u8 tx_maxburst = dwc->tx_max_burst_prd; + + if (rx_thr_num && rx_maxburst) { + reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); + reg |= DWC31_RXTHRNUMPKTSEL_PRD; + + reg &= ~DWC31_RXTHRNUMPKT_PRD(~0); + reg |= DWC31_RXTHRNUMPKT_PRD(rx_thr_num); + + reg &= ~DWC31_MAXRXBURSTSIZE_PRD(~0); + reg |= DWC31_MAXRXBURSTSIZE_PRD(rx_maxburst); + + dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); + } + + if (tx_thr_num && tx_maxburst) { + reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG); + reg |= DWC31_TXTHRNUMPKTSEL_PRD; + + reg &= ~DWC31_TXTHRNUMPKT_PRD(~0); + reg |= DWC31_TXTHRNUMPKT_PRD(tx_thr_num); + + reg &= ~DWC31_MAXTXBURSTSIZE_PRD(~0); + reg |= DWC31_MAXTXBURSTSIZE_PRD(tx_maxburst); + + dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg); + } + } + return 0; err4: @@ -1042,6 +1079,10 @@ static void dwc3_get_properties(struct dwc3 *dwc) u8 lpm_nyet_threshold; u8 tx_de_emphasis; u8 hird_threshold; + u8 rx_thr_num_pkt_prd; + u8 rx_max_burst_prd; + u8 tx_thr_num_pkt_prd; + u8 tx_max_burst_prd; /* default to highest possible threshold */ lpm_nyet_threshold = 0xff; @@ -1076,6 +1117,14 @@ static void dwc3_get_properties(struct dwc3 *dwc) &hird_threshold); dwc->usb3_lpm_capable = device_property_read_bool(dev, "snps,usb3_lpm_capable"); + device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd", + &rx_thr_num_pkt_prd); + device_property_read_u8(dev, "snps,rx-max-burst-prd", + &rx_max_burst_prd); + device_property_read_u8(dev, "snps,tx-thr-num-pkt-prd", + &tx_thr_num_pkt_prd); + device_property_read_u8(dev, "snps,tx-max-burst-prd", + &tx_max_burst_prd); dwc->disable_scramble_quirk = device_property_read_bool(dev, "snps,disable_scramble_quirk"); @@ -1126,6 +1175,12 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->hird_threshold = hird_threshold | (dwc->is_utmi_l1_suspend << 4); + dwc->rx_thr_num_pkt_prd = rx_thr_num_pkt_prd; + dwc->rx_max_burst_prd = rx_max_burst_prd; + + dwc->tx_thr_num_pkt_prd = tx_thr_num_pkt_prd; + dwc->tx_max_burst_prd = tx_max_burst_prd; + dwc->imod_interval = 0; } diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index ce9edcf17738..28d6f6511f6f 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -929,6 +929,10 @@ struct dwc3_scratchpad_array { * @test_mode_nr: test feature selector * @lpm_nyet_threshold: LPM NYET response threshold * @hird_threshold: HIRD threshold + * @rx_thr_num_pkt_prd: periodic ESS receive packet count + * @rx_max_burst_prd: max periodic ESS receive burst size + * @tx_thr_num_pkt_prd: periodic ESS transmit packet count + * @tx_max_burst_prd: max periodic ESS transmit burst size * @hsphy_interface: "utmi" or "ulpi" * @connected: true when we're connected to a host, false otherwise * @delayed_status: true when gadget driver asks for delayed status @@ -1096,6 +1100,10 @@ struct dwc3 { u8 test_mode_nr; u8 lpm_nyet_threshold; u8 hird_threshold; + u8 rx_thr_num_pkt_prd; + u8 rx_max_burst_prd; + u8 tx_thr_num_pkt_prd; + u8 tx_max_burst_prd; const char *hsphy_interface; -- cgit v1.2.1 From 80b776340c78cb2b5755e9a1a04add640c23b436 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:35:51 -0700 Subject: usb: dwc3: Dump LSP and BMU debug info Dump LSP and BMU debug info. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 5 +++++ drivers/usb/dwc3/debugfs.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 28d6f6511f6f..4f3b43809917 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -105,6 +105,11 @@ #define DWC3_GHWPARAMS7 0xc15c #define DWC3_GDBGFIFOSPACE 0xc160 #define DWC3_GDBGLTSSM 0xc164 +#define DWC3_GDBGBMU 0xc16c +#define DWC3_GDBGLSPMUX 0xc170 +#define DWC3_GDBGLSP 0xc174 +#define DWC3_GDBGEPINFO0 0xc178 +#define DWC3_GDBGEPINFO1 0xc17c #define DWC3_GPRTBIMAP_HS0 0xc180 #define DWC3_GPRTBIMAP_HS1 0xc184 #define DWC3_GPRTBIMAP_FS0 0xc188 diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index c4c0dcb3f589..2f07be1e1f31 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -81,6 +81,11 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GHWPARAMS7), dump_register(GDBGFIFOSPACE), dump_register(GDBGLTSSM), + dump_register(GDBGBMU), + dump_register(GDBGLSPMUX), + dump_register(GDBGLSP), + dump_register(GDBGEPINFO0), + dump_register(GDBGEPINFO1), dump_register(GPRTBIMAP_HS0), dump_register(GPRTBIMAP_HS1), dump_register(GPRTBIMAP_FS0), -- cgit v1.2.1 From 2f3090c6a8f24d92ea569b099c5bdb5679dcf08a Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 16 Mar 2018 15:35:57 -0700 Subject: usb: dwc3: Check controller type before setting speed DWC_usb3 speed can only be set up to SuperSpeed. Limit the setting to SuperSpeed only should the value be higher. Otherwise, the controller will read an invalid speed value and set the device to an incorrect speed. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 19cf9c0eef12..550ee952c0d1 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2044,7 +2044,10 @@ static void dwc3_gadget_set_speed(struct usb_gadget *g, reg |= DWC3_DCFG_SUPERSPEED; break; case USB_SPEED_SUPER_PLUS: - reg |= DWC3_DCFG_SUPERSPEED_PLUS; + if (dwc3_is_usb31(dwc)) + reg |= DWC3_DCFG_SUPERSPEED_PLUS; + else + reg |= DWC3_DCFG_SUPERSPEED; break; default: dev_err(dwc->dev, "invalid speed (%d)\n", speed); -- cgit v1.2.1 From 7d11c3ac66694097a1f409bc3559664c48390d73 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 16 Mar 2018 16:44:27 +0200 Subject: usb: dwc3: core: Fix broken system suspend/resume on AM437x On TI's AM437x, the DWC3 controller looses state after a system suspend/resume. We are re-initializing the controller but we miss restoring the PRTCAP register. This causes USB host to break on AM437x after a system suspend/resume. Fix this by restoring the PRTCAP register on system resume. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 7c8d3bedf802..814c986fc7be 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1440,6 +1440,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) if (ret) return ret; + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_resume(dwc); spin_unlock_irqrestore(&dwc->lock, flags); @@ -1450,6 +1451,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) ret = dwc3_core_init(dwc); if (ret) return ret; + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); } break; case DWC3_GCTL_PRTCAP_OTG: -- cgit v1.2.1 From 2f710c1bb666ffd68ed44db190238d4660766f2d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 22 Mar 2018 11:22:24 +0100 Subject: usb: phy: ab8500: Drop AB8540/9540 support The AB8540 was an evolved version of the AB8500, but it was never mass produced or put into products, only reference designs exist. The upstream support was never completed and it is unlikely that this will happen so drop the support for now to simplify maintenance of the AB8500. Cc: Loic Pallardy Signed-off-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-ab8500-usb.c | 506 --------------------------------------- 1 file changed, 506 deletions(-) diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 55655ec4c588..66143ab8c043 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -29,17 +29,12 @@ /* Bank AB8500_USB */ #define AB8500_USB_LINE_STAT_REG 0x80 #define AB8505_USB_LINE_STAT_REG 0x94 -#define AB8540_USB_LINK_STAT_REG 0x94 -#define AB9540_USB_LINK_STAT_REG 0x94 -#define AB8540_USB_OTG_CTL_REG 0x87 #define AB8500_USB_PHY_CTRL_REG 0x8A -#define AB8540_VBUS_CTRL_REG 0x82 /* Bank AB8500_DEVELOPMENT */ #define AB8500_BANK12_ACCESS 0x00 /* Bank AB8500_DEBUG */ -#define AB8540_DEBUG 0x32 #define AB8500_USB_PHY_TUNE1 0x05 #define AB8500_USB_PHY_TUNE2 0x06 #define AB8500_USB_PHY_TUNE3 0x07 @@ -53,10 +48,6 @@ #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) #define AB8500_BIT_WD_CTRL_KICK (1 << 1) #define AB8500_BIT_SOURCE2_VBUSDET (1 << 7) -#define AB8540_BIT_OTG_CTL_VBUS_VALID_ENA (1 << 0) -#define AB8540_BIT_OTG_CTL_ID_HOST_ENA (1 << 1) -#define AB8540_BIT_OTG_CTL_ID_DEV_ENA (1 << 5) -#define AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA (1 << 0) #define AB8500_WD_KICK_DELAY_US 100 /* usec */ #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ @@ -113,68 +104,6 @@ enum ab8505_usb_link_status { USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505, }; -enum ab8540_usb_link_status { - USB_LINK_NOT_CONFIGURED_8540 = 0, - USB_LINK_STD_HOST_NC_8540, - USB_LINK_STD_HOST_C_NS_8540, - USB_LINK_STD_HOST_C_S_8540, - USB_LINK_CDP_8540, - USB_LINK_RESERVED0_8540, - USB_LINK_RESERVED1_8540, - USB_LINK_DEDICATED_CHG_8540, - USB_LINK_ACA_RID_A_8540, - USB_LINK_ACA_RID_B_8540, - USB_LINK_ACA_RID_C_NM_8540, - USB_LINK_RESERVED2_8540, - USB_LINK_RESERVED3_8540, - USB_LINK_HM_IDGND_8540, - USB_LINK_CHARGERPORT_NOT_OK_8540, - USB_LINK_CHARGER_DM_HIGH_8540, - USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540, - USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540, - USB_LINK_STD_UPSTREAM_8540, - USB_LINK_CHARGER_SE1_8540, - USB_LINK_CARKIT_CHGR_1_8540, - USB_LINK_CARKIT_CHGR_2_8540, - USB_LINK_ACA_DOCK_CHGR_8540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8540, - USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8540, - USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8540, - USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8540 -}; - -enum ab9540_usb_link_status { - USB_LINK_NOT_CONFIGURED_9540 = 0, - USB_LINK_STD_HOST_NC_9540, - USB_LINK_STD_HOST_C_NS_9540, - USB_LINK_STD_HOST_C_S_9540, - USB_LINK_CDP_9540, - USB_LINK_RESERVED0_9540, - USB_LINK_RESERVED1_9540, - USB_LINK_DEDICATED_CHG_9540, - USB_LINK_ACA_RID_A_9540, - USB_LINK_ACA_RID_B_9540, - USB_LINK_ACA_RID_C_NM_9540, - USB_LINK_RESERVED2_9540, - USB_LINK_RESERVED3_9540, - USB_LINK_HM_IDGND_9540, - USB_LINK_CHARGERPORT_NOT_OK_9540, - USB_LINK_CHARGER_DM_HIGH_9540, - USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540, - USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540, - USB_LINK_STD_UPSTREAM_9540, - USB_LINK_CHARGER_SE1_9540, - USB_LINK_CARKIT_CHGR_1_9540, - USB_LINK_CARKIT_CHGR_2_9540, - USB_LINK_ACA_DOCK_CHGR_9540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_9540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_9540, - USB_LINK_SAMSUNG_UART_CBL_PHY_EN_9540, - USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_9540, - USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_9540 -}; - enum ab8500_usb_mode { USB_IDLE = 0, USB_PERIPHERAL, @@ -192,10 +121,6 @@ enum ab8500_usb_mode { #define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3) /* Enable setting regulators voltage */ #define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4) -/* Enable the check_vbus_status workaround */ -#define AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS (1 << 5) -/* Enable the vbus host workaround */ -#define AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK (1 << 6) struct ab8500_usb { struct usb_phy phy; @@ -203,7 +128,6 @@ struct ab8500_usb { struct ab8500 *ab8500; unsigned vbus_draw; struct work_struct phy_dis_work; - struct work_struct vbus_event_work; enum ab8500_usb_mode mode; struct clk *sysclk; struct regulator *v_ape; @@ -342,15 +266,6 @@ static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, bit, bit); - - if (ab->flags & AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK) { - if (sel_host) - abx500_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_OTG_CTL_REG, - AB8540_BIT_OTG_CTL_VBUS_VALID_ENA | - AB8540_BIT_OTG_CTL_ID_HOST_ENA | - AB8540_BIT_OTG_CTL_ID_DEV_ENA); - } } static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) @@ -395,263 +310,6 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) -static int ab9540_usb_link_status_update(struct ab8500_usb *ab, - enum ab9540_usb_link_status lsts) -{ - enum ux500_musb_vbus_id_status event = 0; - - dev_dbg(ab->dev, "ab9540_usb_link_status_update %d\n", lsts); - - if (ab->previous_link_status_state == USB_LINK_HM_IDGND_9540 && - (lsts == USB_LINK_STD_HOST_C_NS_9540 || - lsts == USB_LINK_STD_HOST_NC_9540)) - return 0; - - if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_9540 && - (lsts == USB_LINK_STD_HOST_NC_9540)) - return 0; - - ab->previous_link_status_state = lsts; - - switch (lsts) { - case USB_LINK_ACA_RID_B_9540: - event = UX500_MUSB_RIDB; - case USB_LINK_NOT_CONFIGURED_9540: - case USB_LINK_RESERVED0_9540: - case USB_LINK_RESERVED1_9540: - case USB_LINK_RESERVED2_9540: - case USB_LINK_RESERVED3_9540: - if (ab->mode == USB_PERIPHERAL) - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - if (event != UX500_MUSB_RIDB) - event = UX500_MUSB_NONE; - /* Fallback to default B_IDLE as nothing is connected. */ - ab->phy.otg->state = OTG_STATE_B_IDLE; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - break; - - case USB_LINK_ACA_RID_C_NM_9540: - event = UX500_MUSB_RIDC; - case USB_LINK_STD_HOST_NC_9540: - case USB_LINK_STD_HOST_C_NS_9540: - case USB_LINK_STD_HOST_C_S_9540: - case USB_LINK_CDP_9540: - if (ab->mode == USB_HOST) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (ab->mode == USB_IDLE) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (event != UX500_MUSB_RIDC) - event = UX500_MUSB_VBUS; - break; - - case USB_LINK_ACA_RID_A_9540: - event = UX500_MUSB_RIDA; - case USB_LINK_HM_IDGND_9540: - case USB_LINK_STD_UPSTREAM_9540: - if (ab->mode == USB_PERIPHERAL) { - ab->mode = USB_HOST; - ab8500_usb_peri_phy_dis(ab); - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - if (ab->mode == USB_IDLE) { - ab->mode = USB_HOST; - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - ab->phy.otg->default_a = true; - if (event != UX500_MUSB_RIDA) - event = UX500_MUSB_ID; - - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - break; - - case USB_LINK_DEDICATED_CHG_9540: - ab->mode = USB_DEDICATED_CHG; - event = UX500_MUSB_CHARGER; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); - break; - - case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540: - case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540: - if (!(is_ab9540_2p0_or_earlier(ab->ab8500))) { - event = UX500_MUSB_NONE; - if (ab->mode == USB_HOST) { - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_host_phy_dis(ab); - ab->mode = USB_IDLE; - } - if (ab->mode == USB_PERIPHERAL) { - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_peri_phy_dis(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, - &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - } - } - break; - - default: - break; - } - - return 0; -} - -static int ab8540_usb_link_status_update(struct ab8500_usb *ab, - enum ab8540_usb_link_status lsts) -{ - enum ux500_musb_vbus_id_status event = 0; - - dev_dbg(ab->dev, "ab8540_usb_link_status_update %d\n", lsts); - - if (ab->enabled_charging_detection) { - /* Disable USB Charger detection */ - abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_VBUS_CTRL_REG, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, 0x00); - ab->enabled_charging_detection = false; - } - - /* - * Spurious link_status interrupts are seen in case of a - * disconnection of a device in IDGND and RIDA stage - */ - if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8540 && - (lsts == USB_LINK_STD_HOST_C_NS_8540 || - lsts == USB_LINK_STD_HOST_NC_8540)) - return 0; - - if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8540 && - (lsts == USB_LINK_STD_HOST_NC_8540)) - return 0; - - ab->previous_link_status_state = lsts; - - switch (lsts) { - case USB_LINK_ACA_RID_B_8540: - event = UX500_MUSB_RIDB; - case USB_LINK_NOT_CONFIGURED_8540: - case USB_LINK_RESERVED0_8540: - case USB_LINK_RESERVED1_8540: - case USB_LINK_RESERVED2_8540: - case USB_LINK_RESERVED3_8540: - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - if (event != UX500_MUSB_RIDB) - event = UX500_MUSB_NONE; - /* - * Fallback to default B_IDLE as nothing - * is connected - */ - ab->phy.otg->state = OTG_STATE_B_IDLE; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - break; - - case USB_LINK_ACA_RID_C_NM_8540: - event = UX500_MUSB_RIDC; - case USB_LINK_STD_HOST_NC_8540: - case USB_LINK_STD_HOST_C_NS_8540: - case USB_LINK_STD_HOST_C_S_8540: - case USB_LINK_CDP_8540: - if (ab->mode == USB_IDLE) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (event != UX500_MUSB_RIDC) - event = UX500_MUSB_VBUS; - break; - - case USB_LINK_ACA_RID_A_8540: - case USB_LINK_ACA_DOCK_CHGR_8540: - event = UX500_MUSB_RIDA; - case USB_LINK_HM_IDGND_8540: - case USB_LINK_STD_UPSTREAM_8540: - if (ab->mode == USB_IDLE) { - ab->mode = USB_HOST; - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - ab->phy.otg->default_a = true; - if (event != UX500_MUSB_RIDA) - event = UX500_MUSB_ID; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - break; - - case USB_LINK_DEDICATED_CHG_8540: - ab->mode = USB_DEDICATED_CHG; - event = UX500_MUSB_CHARGER; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); - break; - - case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540: - case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540: - event = UX500_MUSB_NONE; - if (ab->mode == USB_HOST) { - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_host_phy_dis(ab); - ab->mode = USB_IDLE; - } - if (ab->mode == USB_PERIPHERAL) { - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_peri_phy_dis(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - } - break; - - default: - event = UX500_MUSB_NONE; - break; - } - - return 0; -} - static int ab8505_usb_link_status_update(struct ab8500_usb *ab, enum ab8505_usb_link_status lsts) { @@ -858,20 +516,6 @@ static int abx500_usb_link_status_update(struct ab8500_usb *ab) AB8500_USB, AB8505_USB_LINE_STAT_REG, ®); lsts = (reg >> 3) & 0x1F; ret = ab8505_usb_link_status_update(ab, lsts); - } else if (is_ab8540(ab->ab8500)) { - enum ab8540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_LINK_STAT_REG, ®); - lsts = (reg >> 3) & 0xFF; - ret = ab8540_usb_link_status_update(ab, lsts); - } else if (is_ab9540(ab->ab8500)) { - enum ab9540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB9540_USB_LINK_STAT_REG, ®); - lsts = (reg >> 3) & 0xFF; - ret = ab9540_usb_link_status_update(ab, lsts); } return ret; @@ -946,69 +590,6 @@ static void ab8500_usb_phy_disable_work(struct work_struct *work) ab8500_usb_peri_phy_dis(ab); } -/* Check if VBUS is set and linkstatus has not detected a cable. */ -static bool ab8500_usb_check_vbus_status(struct ab8500_usb *ab) -{ - u8 isource2; - u8 reg; - enum ab8540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_INTERRUPT, AB8500_IT_SOURCE2_REG, - &isource2); - - /* If Vbus is below 3.6V abort */ - if (!(isource2 & AB8500_BIT_SOURCE2_VBUSDET)) - return false; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_LINK_STAT_REG, - ®); - - lsts = (reg >> 3) & 0xFF; - - /* Check if linkstatus has detected a cable */ - if (lsts) - return false; - - return true; -} - -/* re-trigger charger detection again with watchdog re-kick. */ -static void ab8500_usb_vbus_turn_on_event_work(struct work_struct *work) -{ - struct ab8500_usb *ab = container_of(work, struct ab8500_usb, - vbus_event_work); - - if (ab->mode != USB_IDLE) - return; - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - AB8500_BIT_WD_CTRL_ENABLE); - - udelay(100); - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK); - - udelay(100); - - /* Disable Main watchdog */ - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - 0x0); - - /* Enable USB Charger detection */ - abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_VBUS_CTRL_REG, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA); - - ab->enabled_charging_detection = true; -} - static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend) { /* TODO */ @@ -1256,66 +837,6 @@ static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) err); } -static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) -{ - int err; - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE1, 0xCC); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register ret=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register ret=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 register ret=%d\n", - err); -} - -static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) -{ - int err; - - /* Enable the PBT/Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); -} - static int ab8500_usb_probe(struct platform_device *pdev) { struct ab8500_usb *ab; @@ -1362,17 +883,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | AB8500_USB_FLAG_USE_VBUS_DET_IRQ | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - } else if (is_ab8540(ab->ab8500)) { - ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | - AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS | - AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK | - AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - } else if (is_ab9540(ab->ab8500)) { - ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | - AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - if (is_ab9540_2p0_or_earlier(ab->ab8500)) - ab->flags |= AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | - AB8500_USB_FLAG_USE_VBUS_DET_IRQ; } /* Disable regulator voltage setting for AB8500 <= v2.0 */ @@ -1384,8 +894,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); - INIT_WORK(&ab->vbus_event_work, ab8500_usb_vbus_turn_on_event_work); - err = ab8500_usb_regulator_get(ab); if (err) return err; @@ -1412,12 +920,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) else if (is_ab8505(ab->ab8500)) /* Phy tuning values for AB8505 */ ab8500_usb_set_ab8505_tuning_values(ab); - else if (is_ab8540(ab->ab8500)) - /* Phy tuning values for AB8540 */ - ab8500_usb_set_ab8540_tuning_values(ab); - else if (is_ab9540(ab->ab8500)) - /* Phy tuning values for AB9540 */ - ab8500_usb_set_ab9540_tuning_values(ab); /* Needed to enable ID detection. */ ab8500_usb_wd_workaround(ab); @@ -1428,11 +930,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) */ ab8500_usb_restart_phy(ab); - if (ab->flags & AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS) { - if (ab8500_usb_check_vbus_status(ab)) - schedule_work(&ab->vbus_event_work); - } - abx500_usb_link_status_update(ab); dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev); @@ -1445,7 +942,6 @@ static int ab8500_usb_remove(struct platform_device *pdev) struct ab8500_usb *ab = platform_get_drvdata(pdev); cancel_work_sync(&ab->phy_dis_work); - cancel_work_sync(&ab->vbus_event_work); usb_remove_phy(&ab->phy); @@ -1459,8 +955,6 @@ static int ab8500_usb_remove(struct platform_device *pdev) static const struct platform_device_id ab8500_usb_devtype[] = { { .name = "ab8500-usb", }, - { .name = "ab8540-usb", }, - { .name = "ab9540-usb", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype); -- cgit v1.2.1 From 1cbd53c8cd85a63383a075347abee8f6e3f14fbe Mon Sep 17 00:00:00 2001 From: Richard Leitner Date: Tue, 20 Mar 2018 11:17:13 +0100 Subject: usb: core: introduce per-port over-current counters For some userspace applications information on the number of over-current conditions at specific USB hub ports is relevant. In our case we have a series of USB hardware (using the cp210x driver) which communicates using a proprietary protocol. These devices sometimes trigger an over-current situation on some hubs. In case of such an over-current situation the USB devices offer an interface for reducing the max used power. As these conditions are quite rare and imply performance reductions of the device we don't want to reduce the max power always. Therefore give user-space applications the possibility to react adequately by introducing an over_current_counter in the usb port struct which is exported via sysfs. Signed-off-by: Richard Leitner Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-bus-usb | 10 ++++++++++ drivers/usb/core/hub.c | 4 +++- drivers/usb/core/hub.h | 1 + drivers/usb/core/port.c | 10 ++++++++++ 4 files changed, 24 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 0bd731cbb50c..c702c78f24d8 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -189,6 +189,16 @@ Description: The file will read "hotplug", "wired" and "not used" if the information is available, and "unknown" otherwise. +What: /sys/bus/usb/devices/.../(hub interface)/portX/over_current_count +Date: February 2018 +Contact: Richard Leitner +Description: + Most hubs are able to detect over-current situations on their + ports and report them to the kernel. This attribute is to expose + the number of over-current situation occurred on a specific port + to user space. This file will contain an unsigned 32 bit value + which wraps to 0 after its maximum is reached. + What: /sys/bus/usb/devices/.../(hub interface)/portX/usb3_lpm_permit Date: November 2015 Contact: Lu Baolu diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index ac7bab772a3a..aaeef03c0d83 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -5104,8 +5104,10 @@ static void port_event(struct usb_hub *hub, int port1) if (portchange & USB_PORT_STAT_C_OVERCURRENT) { u16 status = 0, unused; + port_dev->over_current_count++; - dev_dbg(&port_dev->dev, "over-current change\n"); + dev_dbg(&port_dev->dev, "over-current change #%u\n", + port_dev->over_current_count); usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_OVER_CURRENT); msleep(100); /* Cool down */ diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 2a700ccc868c..4dc769ee9c74 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -96,6 +96,7 @@ struct usb_port { enum usb_port_connect_type connect_type; usb_port_location_t location; struct mutex status_lock; + u32 over_current_count; u8 portnum; unsigned int is_superspeed:1; unsigned int usb3_lpm_u1_permit:1; diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 1a01e9ad3804..6979bde87d31 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -41,6 +41,15 @@ static ssize_t connect_type_show(struct device *dev, } static DEVICE_ATTR_RO(connect_type); +static ssize_t over_current_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_port *port_dev = to_usb_port(dev); + + return sprintf(buf, "%u\n", port_dev->over_current_count); +} +static DEVICE_ATTR_RO(over_current_count); + static ssize_t usb3_lpm_permit_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -109,6 +118,7 @@ static DEVICE_ATTR_RW(usb3_lpm_permit); static struct attribute *port_dev_attrs[] = { &dev_attr_connect_type.attr, + &dev_attr_over_current_count.attr, NULL, }; -- cgit v1.2.1 From 2699126bcf18db672451b82b26a1c8e954784fad Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 21 Mar 2018 20:21:56 -0600 Subject: usbip: tools: usbipd: exclude exported devices from exportable device list usbipd includes exported devices in response to exportable device list. Exclude exported devices from exportable device list to avoid: - import requests for devices that are exported only to fail the request. - revealing devices that are imported by a client to another client. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- tools/usb/usbip/src/usbipd.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/tools/usb/usbip/src/usbipd.c b/tools/usb/usbip/src/usbipd.c index f8ff735eb100..32864c52942d 100644 --- a/tools/usb/usbip/src/usbipd.c +++ b/tools/usb/usbip/src/usbipd.c @@ -175,10 +175,21 @@ static int send_reply_devlist(int connfd) struct list_head *j; int rc, i; + /* + * Exclude devices that are already exported to a client from + * the exportable device list to avoid: + * - import requests for devices that are exported only to + * fail the request. + * - revealing devices that are imported by a client to + * another client. + */ + reply.ndev = 0; /* number of exported devices */ list_for_each(j, &driver->edev_list) { - reply.ndev += 1; + edev = list_entry(j, struct usbip_exported_device, node); + if (edev->status != SDEV_ST_USED) + reply.ndev += 1; } info("exportable devices: %d", reply.ndev); @@ -197,6 +208,9 @@ static int send_reply_devlist(int connfd) list_for_each(j, &driver->edev_list) { edev = list_entry(j, struct usbip_exported_device, node); + if (edev->status == SDEV_ST_USED) + continue; + dump_usb_device(&edev->udev); memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev)); usbip_net_pack_usb_device(1, &pdu_udev); -- cgit v1.2.1 From f2d9b66d84f3ff5ea3aff111e6a403e04fa8bf37 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 20 Mar 2018 15:57:02 +0300 Subject: drivers: base: Unified device connection lookup Several frameworks - clk, gpio, phy, pmw, etc. - maintain lookup tables for describing connections and provide custom API for handling them. This introduces a single generic lookup table and API for the connections. The motivation for this commit is centralizing the connection lookup, but the goal is to ultimately extract the connection descriptions also from firmware by using the fwnode_graph_* functions and other mechanisms that are available. Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- Documentation/driver-api/device_connection.rst | 43 ++++++++ drivers/base/Makefile | 3 +- drivers/base/devcon.c | 136 +++++++++++++++++++++++++ include/linux/device.h | 22 ++++ 4 files changed, 203 insertions(+), 1 deletion(-) create mode 100644 Documentation/driver-api/device_connection.rst create mode 100644 drivers/base/devcon.c diff --git a/Documentation/driver-api/device_connection.rst b/Documentation/driver-api/device_connection.rst new file mode 100644 index 000000000000..affbc5566ab0 --- /dev/null +++ b/Documentation/driver-api/device_connection.rst @@ -0,0 +1,43 @@ +================== +Device connections +================== + +Introduction +------------ + +Devices often have connections to other devices that are outside of the direct +child/parent relationship. A serial or network communication controller, which +could be a PCI device, may need to be able to get a reference to its PHY +component, which could be attached for example to the I2C bus. Some device +drivers need to be able to control the clocks or the GPIOs for their devices, +and so on. + +Device connections are generic descriptions of any type of connection between +two separate devices. + +Device connections alone do not create a dependency between the two devices. +They are only descriptions which are not tied to either of the devices directly. +A dependency between the two devices exists only if one of the two endpoint +devices requests a reference to the other. The descriptions themselves can be +defined in firmware (not yet supported) or they can be built-in. + +Usage +----- + +Device connections should exist before device ``->probe`` callback is called for +either endpoint device in the description. If the connections are defined in +firmware, this is not a problem. It should be considered if the connection +descriptions are "built-in", and need to be added separately. + +The connection description consists of the names of the two devices with the +connection, i.e. the endpoints, and unique identifier for the connection which +is needed if there are multiple connections between the two devices. + +After a description exists, the devices in it can request reference to the other +endpoint device, or they can request the description itself. + +API +--- + +.. kernel-doc:: drivers/base/devcon.c + : functions: device_connection_find_match device_connection_find device_connection_add device_connection_remove diff --git a/drivers/base/Makefile b/drivers/base/Makefile index e32a52490051..12a7f64d35a9 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -5,7 +5,8 @@ obj-y := component.o core.o bus.o dd.o syscore.o \ driver.o class.o platform.o \ cpu.o firmware.o init.o map.o devres.o \ attribute_container.o transport_class.o \ - topology.o container.o property.o cacheinfo.o + topology.o container.o property.o cacheinfo.o \ + devcon.o obj-$(CONFIG_DEVTMPFS) += devtmpfs.o obj-$(CONFIG_DMA_CMA) += dma-contiguous.o obj-y += power/ diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c new file mode 100644 index 000000000000..d427e806cd73 --- /dev/null +++ b/drivers/base/devcon.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * Device connections + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus + */ + +#include + +static DEFINE_MUTEX(devcon_lock); +static LIST_HEAD(devcon_list); + +/** + * device_connection_find_match - Find physical connection to a device + * @dev: Device with the connection + * @con_id: Identifier for the connection + * @data: Data for the match function + * @match: Function to check and convert the connection description + * + * Find a connection with unique identifier @con_id between @dev and another + * device. @match will be used to convert the connection description to data the + * caller is expecting to be returned. + */ +void *device_connection_find_match(struct device *dev, const char *con_id, + void *data, + void *(*match)(struct device_connection *con, + int ep, void *data)) +{ + const char *devname = dev_name(dev); + struct device_connection *con; + void *ret = NULL; + int ep; + + if (!match) + return NULL; + + mutex_lock(&devcon_lock); + + list_for_each_entry(con, &devcon_list, list) { + ep = match_string(con->endpoint, 2, devname); + if (ep < 0) + continue; + + if (con_id && strcmp(con->id, con_id)) + continue; + + ret = match(con, !ep, data); + if (ret) + break; + } + + mutex_unlock(&devcon_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(device_connection_find_match); + +extern struct bus_type platform_bus_type; +extern struct bus_type pci_bus_type; +extern struct bus_type i2c_bus_type; +extern struct bus_type spi_bus_type; + +static struct bus_type *generic_match_buses[] = { + &platform_bus_type, +#ifdef CONFIG_PCI + &pci_bus_type, +#endif +#ifdef CONFIG_I2C + &i2c_bus_type, +#endif +#ifdef CONFIG_SPI_MASTER + &spi_bus_type, +#endif + NULL, +}; + +/* This tries to find the device from the most common bus types by name. */ +static void *generic_match(struct device_connection *con, int ep, void *data) +{ + struct bus_type *bus; + struct device *dev; + + for (bus = generic_match_buses[0]; bus; bus++) { + dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]); + if (dev) + return dev; + } + + /* + * We only get called if a connection was found, tell the caller to + * wait for the other device to show up. + */ + return ERR_PTR(-EPROBE_DEFER); +} + +/** + * device_connection_find - Find two devices connected together + * @dev: Device with the connection + * @con_id: Identifier for the connection + * + * Find a connection with unique identifier @con_id between @dev and + * another device. On success returns handle to the device that is connected + * to @dev, with the reference count for the found device incremented. Returns + * NULL if no matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a + * connection was found but the other device has not been enumerated yet. + */ +struct device *device_connection_find(struct device *dev, const char *con_id) +{ + return device_connection_find_match(dev, con_id, NULL, generic_match); +} +EXPORT_SYMBOL_GPL(device_connection_find); + +/** + * device_connection_add - Register a connection description + * @con: The connection description to be registered + */ +void device_connection_add(struct device_connection *con) +{ + mutex_lock(&devcon_lock); + list_add_tail(&con->list, &devcon_list); + mutex_unlock(&devcon_lock); +} +EXPORT_SYMBOL_GPL(device_connection_add); + +/** + * device_connections_remove - Unregister connection description + * @con: The connection description to be unregistered + */ +void device_connection_remove(struct device_connection *con) +{ + mutex_lock(&devcon_lock); + list_del(&con->list); + mutex_unlock(&devcon_lock); +} +EXPORT_SYMBOL_GPL(device_connection_remove); diff --git a/include/linux/device.h b/include/linux/device.h index b093405ed525..204ff64279fd 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -729,6 +729,28 @@ struct device_dma_parameters { unsigned long segment_boundary_mask; }; +/** + * struct device_connection - Device Connection Descriptor + * @endpoint: The names of the two devices connected together + * @id: Unique identifier for the connection + * @list: List head, private, for internal use only + */ +struct device_connection { + const char *endpoint[2]; + const char *id; + struct list_head list; +}; + +void *device_connection_find_match(struct device *dev, const char *con_id, + void *data, + void *(*match)(struct device_connection *con, + int ep, void *data)); + +struct device *device_connection_find(struct device *dev, const char *con_id); + +void device_connection_add(struct device_connection *con); +void device_connection_remove(struct device_connection *con); + /** * enum device_link_state - Device link states. * @DL_STATE_NONE: The presence of the drivers is not being tracked. -- cgit v1.2.1 From bdecb33af34f79cbfbb656661210f77c8b8b5b5f Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 20 Mar 2018 15:57:03 +0300 Subject: usb: typec: API for controlling USB Type-C Multiplexers USB Type-C connectors consist of various muxes and switches that route the pins on the connector to the right locations. The USB Type-C drivers need to be able to control the muxes, as they are the ones that know things like the cable plug orientation, and the current mode that was negotiated with the partner. This introduces a small API for registering and controlling cable plug orientation switches, and separate small API for registering and controlling pin multiplexer/demultiplexer switches that are needed with Accessory/Alternate Modes. Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- Documentation/driver-api/usb/typec.rst | 73 +- drivers/usb/typec/Makefile | 1 + drivers/usb/typec/class.c | 1435 ++++++++++++++++++++++++++++++++ drivers/usb/typec/mux.c | 191 +++++ drivers/usb/typec/typec.c | 1365 ------------------------------ include/linux/usb/typec.h | 14 + include/linux/usb/typec_mux.h | 55 ++ 7 files changed, 1758 insertions(+), 1376 deletions(-) create mode 100644 drivers/usb/typec/class.c create mode 100644 drivers/usb/typec/mux.c delete mode 100644 drivers/usb/typec/typec.c create mode 100644 include/linux/usb/typec_mux.h diff --git a/Documentation/driver-api/usb/typec.rst b/Documentation/driver-api/usb/typec.rst index 8a7249f2ff04..feb31946490b 100644 --- a/Documentation/driver-api/usb/typec.rst +++ b/Documentation/driver-api/usb/typec.rst @@ -61,7 +61,7 @@ Registering the ports The port drivers will describe every Type-C port they control with struct typec_capability data structure, and register them with the following API: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_register_port typec_unregister_port When registering the ports, the prefer_role member in struct typec_capability @@ -80,7 +80,7 @@ typec_partner_desc. The class copies the details of the partner during registration. The class offers the following API for registering/unregistering partners. -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_register_partner typec_unregister_partner The class will provide a handle to struct typec_partner if the registration was @@ -92,7 +92,7 @@ should include handle to struct usb_pd_identity instance. The class will then create a sysfs directory for the identity under the partner device. The result of Discover Identity command can then be reported with the following API: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_partner_set_identity Registering Cables @@ -113,7 +113,7 @@ typec_cable_desc and about a plug in struct typec_plug_desc. The class copies the details during registration. The class offers the following API for registering/unregistering cables and their plugs: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_register_cable typec_unregister_cable typec_register_plug typec_unregister_plug The class will provide a handle to struct typec_cable and struct typec_plug if @@ -125,7 +125,7 @@ include handle to struct usb_pd_identity instance. The class will then create a sysfs directory for the identity under the cable device. The result of Discover Identity command can then be reported with the following API: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_cable_set_identity Notifications @@ -135,7 +135,7 @@ When the partner has executed a role change, or when the default roles change during connection of a partner or cable, the port driver must use the following APIs to report it to the class: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_set_data_role typec_set_pwr_role typec_set_vconn_role typec_set_pwr_opmode Alternate Modes @@ -150,7 +150,7 @@ and struct typec_altmode_desc which is a container for all the supported modes. Ports that support Alternate Modes need to register each SVID they support with the following API: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_port_register_altmode If a partner or cable plug provides a list of SVIDs as response to USB Power @@ -159,12 +159,12 @@ registered. API for the partners: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_partner_register_altmode API for the Cable Plugs: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_plug_register_altmode So ports, partners and cable plugs will register the alternate modes with their @@ -172,11 +172,62 @@ own functions, but the registration will always return a handle to struct typec_altmode on success, or NULL. The unregistration will happen with the same function: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_unregister_altmode If a partner or cable plug enters or exits a mode, the port driver needs to notify the class with the following API: -.. kernel-doc:: drivers/usb/typec/typec.c +.. kernel-doc:: drivers/usb/typec/class.c :functions: typec_altmode_update_active + +Multiplexer/DeMultiplexer Switches +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +USB Type-C connectors may have one or more mux/demux switches behind them. Since +the plugs can be inserted right-side-up or upside-down, a switch is needed to +route the correct data pairs from the connector to the USB controllers. If +Alternate or Accessory Modes are supported, another switch is needed that can +route the pins on the connector to some other component besides USB. USB Type-C +Connector Class supplies an API for registering those switches. + +.. kernel-doc:: drivers/usb/typec/mux.c + :functions: typec_switch_register typec_switch_unregister typec_mux_register typec_mux_unregister + +In most cases the same physical mux will handle both the orientation and mode. +However, as the port drivers will be responsible for the orientation, and the +alternate mode drivers for the mode, the two are always separated into their +own logical components: "mux" for the mode and "switch" for the orientation. + +When a port is registered, USB Type-C Connector Class requests both the mux and +the switch for the port. The drivers can then use the following API for +controlling them: + +.. kernel-doc:: drivers/usb/typec/class.c + :functions: typec_set_orientation typec_set_mode + +If the connector is dual-role capable, there may also be a switch for the data +role. USB Type-C Connector Class does not supply separate API for them. The +port drivers can use USB Role Class API with those. + +Illustration of the muxes behind a connector that supports an alternate mode: + + ------------------------ + | Connector | + ------------------------ + | | + ------------------------ + \ Orientation / + -------------------- + | + -------------------- + / Mode \ + ------------------------ + / \ + ------------------------ -------------------- + | Alt Mode | / USB Role \ + ------------------------ ------------------------ + / \ + ------------------------ ------------------------ + | USB Host | | USB Device | + ------------------------ ------------------------ diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile index bb3138a6eaac..56b2e9516ec1 100644 --- a/drivers/usb/typec/Makefile +++ b/drivers/usb/typec/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_TYPEC) += typec.o +typec-y := class.o mux.o obj-$(CONFIG_TYPEC_TCPM) += tcpm.o obj-y += fusb302/ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c new file mode 100644 index 000000000000..2620a694704f --- /dev/null +++ b/drivers/usb/typec/class.c @@ -0,0 +1,1435 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * USB Type-C Connector Class + * + * Copyright (C) 2017, Intel Corporation + * Author: Heikki Krogerus + */ + +#include +#include +#include +#include +#include +#include + +struct typec_mode { + int index; + u32 vdo; + char *desc; + enum typec_port_type roles; + + struct typec_altmode *alt_mode; + + unsigned int active:1; + + char group_name[6]; + struct attribute_group group; + struct attribute *attrs[5]; + struct device_attribute vdo_attr; + struct device_attribute desc_attr; + struct device_attribute active_attr; + struct device_attribute roles_attr; +}; + +struct typec_altmode { + struct device dev; + u16 svid; + int n_modes; + struct typec_mode modes[ALTMODE_MAX_MODES]; + const struct attribute_group *mode_groups[ALTMODE_MAX_MODES]; +}; + +struct typec_plug { + struct device dev; + enum typec_plug_index index; +}; + +struct typec_cable { + struct device dev; + enum typec_plug_type type; + struct usb_pd_identity *identity; + unsigned int active:1; +}; + +struct typec_partner { + struct device dev; + unsigned int usb_pd:1; + struct usb_pd_identity *identity; + enum typec_accessory accessory; +}; + +struct typec_port { + unsigned int id; + struct device dev; + + int prefer_role; + enum typec_data_role data_role; + enum typec_role pwr_role; + enum typec_role vconn_role; + enum typec_pwr_opmode pwr_opmode; + enum typec_port_type port_type; + struct mutex port_type_lock; + + enum typec_orientation orientation; + struct typec_switch *sw; + struct typec_mux *mux; + + const struct typec_capability *cap; +}; + +#define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev) +#define to_typec_plug(_dev_) container_of(_dev_, struct typec_plug, dev) +#define to_typec_cable(_dev_) container_of(_dev_, struct typec_cable, dev) +#define to_typec_partner(_dev_) container_of(_dev_, struct typec_partner, dev) +#define to_altmode(_dev_) container_of(_dev_, struct typec_altmode, dev) + +static const struct device_type typec_partner_dev_type; +static const struct device_type typec_cable_dev_type; +static const struct device_type typec_plug_dev_type; +static const struct device_type typec_port_dev_type; + +#define is_typec_partner(_dev_) (_dev_->type == &typec_partner_dev_type) +#define is_typec_cable(_dev_) (_dev_->type == &typec_cable_dev_type) +#define is_typec_plug(_dev_) (_dev_->type == &typec_plug_dev_type) +#define is_typec_port(_dev_) (_dev_->type == &typec_port_dev_type) + +static DEFINE_IDA(typec_index_ida); +static struct class *typec_class; + +/* ------------------------------------------------------------------------- */ +/* Common attributes */ + +static const char * const typec_accessory_modes[] = { + [TYPEC_ACCESSORY_NONE] = "none", + [TYPEC_ACCESSORY_AUDIO] = "analog_audio", + [TYPEC_ACCESSORY_DEBUG] = "debug", +}; + +static struct usb_pd_identity *get_pd_identity(struct device *dev) +{ + if (is_typec_partner(dev)) { + struct typec_partner *partner = to_typec_partner(dev); + + return partner->identity; + } else if (is_typec_cable(dev)) { + struct typec_cable *cable = to_typec_cable(dev); + + return cable->identity; + } + return NULL; +} + +static ssize_t id_header_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->id_header); +} +static DEVICE_ATTR_RO(id_header); + +static ssize_t cert_stat_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->cert_stat); +} +static DEVICE_ATTR_RO(cert_stat); + +static ssize_t product_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->product); +} +static DEVICE_ATTR_RO(product); + +static struct attribute *usb_pd_id_attrs[] = { + &dev_attr_id_header.attr, + &dev_attr_cert_stat.attr, + &dev_attr_product.attr, + NULL +}; + +static const struct attribute_group usb_pd_id_group = { + .name = "identity", + .attrs = usb_pd_id_attrs, +}; + +static const struct attribute_group *usb_pd_id_groups[] = { + &usb_pd_id_group, + NULL, +}; + +static void typec_report_identity(struct device *dev) +{ + sysfs_notify(&dev->kobj, "identity", "id_header"); + sysfs_notify(&dev->kobj, "identity", "cert_stat"); + sysfs_notify(&dev->kobj, "identity", "product"); +} + +/* ------------------------------------------------------------------------- */ +/* Alternate Modes */ + +/** + * typec_altmode_update_active - Report Enter/Exit mode + * @alt: Handle to the alternate mode + * @mode: Mode index + * @active: True when the mode has been entered + * + * If a partner or cable plug executes Enter/Exit Mode command successfully, the + * drivers use this routine to report the updated state of the mode. + */ +void typec_altmode_update_active(struct typec_altmode *alt, int mode, + bool active) +{ + struct typec_mode *m = &alt->modes[mode]; + char dir[6]; + + if (m->active == active) + return; + + m->active = active; + snprintf(dir, sizeof(dir), "mode%d", mode); + sysfs_notify(&alt->dev.kobj, dir, "active"); + kobject_uevent(&alt->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_altmode_update_active); + +/** + * typec_altmode2port - Alternate Mode to USB Type-C port + * @alt: The Alternate Mode + * + * Returns handle to the port that a cable plug or partner with @alt is + * connected to. + */ +struct typec_port *typec_altmode2port(struct typec_altmode *alt) +{ + if (is_typec_plug(alt->dev.parent)) + return to_typec_port(alt->dev.parent->parent->parent); + if (is_typec_partner(alt->dev.parent)) + return to_typec_port(alt->dev.parent->parent); + if (is_typec_port(alt->dev.parent)) + return to_typec_port(alt->dev.parent); + + return NULL; +} +EXPORT_SYMBOL_GPL(typec_altmode2port); + +static ssize_t +typec_altmode_vdo_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + vdo_attr); + + return sprintf(buf, "0x%08x\n", mode->vdo); +} + +static ssize_t +typec_altmode_desc_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + desc_attr); + + return sprintf(buf, "%s\n", mode->desc ? mode->desc : ""); +} + +static ssize_t +typec_altmode_active_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + active_attr); + + return sprintf(buf, "%s\n", mode->active ? "yes" : "no"); +} + +static ssize_t +typec_altmode_active_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + active_attr); + struct typec_port *port = typec_altmode2port(mode->alt_mode); + bool activate; + int ret; + + if (!port->cap->activate_mode) + return -EOPNOTSUPP; + + ret = kstrtobool(buf, &activate); + if (ret) + return ret; + + ret = port->cap->activate_mode(port->cap, mode->index, activate); + if (ret) + return ret; + + return size; +} + +static ssize_t +typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + roles_attr); + ssize_t ret; + + switch (mode->roles) { + case TYPEC_PORT_DFP: + ret = sprintf(buf, "source\n"); + break; + case TYPEC_PORT_UFP: + ret = sprintf(buf, "sink\n"); + break; + case TYPEC_PORT_DRP: + default: + ret = sprintf(buf, "source sink\n"); + break; + } + return ret; +} + +static void typec_init_modes(struct typec_altmode *alt, + const struct typec_mode_desc *desc, bool is_port) +{ + int i; + + for (i = 0; i < alt->n_modes; i++, desc++) { + struct typec_mode *mode = &alt->modes[i]; + + /* Not considering the human readable description critical */ + mode->desc = kstrdup(desc->desc, GFP_KERNEL); + if (desc->desc && !mode->desc) + dev_err(&alt->dev, "failed to copy mode%d desc\n", i); + + mode->alt_mode = alt; + mode->vdo = desc->vdo; + mode->roles = desc->roles; + mode->index = desc->index; + sprintf(mode->group_name, "mode%d", desc->index); + + sysfs_attr_init(&mode->vdo_attr.attr); + mode->vdo_attr.attr.name = "vdo"; + mode->vdo_attr.attr.mode = 0444; + mode->vdo_attr.show = typec_altmode_vdo_show; + + sysfs_attr_init(&mode->desc_attr.attr); + mode->desc_attr.attr.name = "description"; + mode->desc_attr.attr.mode = 0444; + mode->desc_attr.show = typec_altmode_desc_show; + + sysfs_attr_init(&mode->active_attr.attr); + mode->active_attr.attr.name = "active"; + mode->active_attr.attr.mode = 0644; + mode->active_attr.show = typec_altmode_active_show; + mode->active_attr.store = typec_altmode_active_store; + + mode->attrs[0] = &mode->vdo_attr.attr; + mode->attrs[1] = &mode->desc_attr.attr; + mode->attrs[2] = &mode->active_attr.attr; + + /* With ports, list the roles that the mode is supported with */ + if (is_port) { + sysfs_attr_init(&mode->roles_attr.attr); + mode->roles_attr.attr.name = "supported_roles"; + mode->roles_attr.attr.mode = 0444; + mode->roles_attr.show = typec_altmode_roles_show; + + mode->attrs[3] = &mode->roles_attr.attr; + } + + mode->group.attrs = mode->attrs; + mode->group.name = mode->group_name; + + alt->mode_groups[i] = &mode->group; + } +} + +static ssize_t svid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_altmode *alt = to_altmode(dev); + + return sprintf(buf, "%04x\n", alt->svid); +} +static DEVICE_ATTR_RO(svid); + +static struct attribute *typec_altmode_attrs[] = { + &dev_attr_svid.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_altmode); + +static void typec_altmode_release(struct device *dev) +{ + struct typec_altmode *alt = to_altmode(dev); + int i; + + for (i = 0; i < alt->n_modes; i++) + kfree(alt->modes[i].desc); + kfree(alt); +} + +static const struct device_type typec_altmode_dev_type = { + .name = "typec_alternate_mode", + .groups = typec_altmode_groups, + .release = typec_altmode_release, +}; + +static struct typec_altmode * +typec_register_altmode(struct device *parent, + const struct typec_altmode_desc *desc) +{ + struct typec_altmode *alt; + int ret; + + alt = kzalloc(sizeof(*alt), GFP_KERNEL); + if (!alt) + return ERR_PTR(-ENOMEM); + + alt->svid = desc->svid; + alt->n_modes = desc->n_modes; + typec_init_modes(alt, desc->modes, is_typec_port(parent)); + + alt->dev.parent = parent; + alt->dev.groups = alt->mode_groups; + alt->dev.type = &typec_altmode_dev_type; + dev_set_name(&alt->dev, "svid-%04x", alt->svid); + + ret = device_register(&alt->dev); + if (ret) { + dev_err(parent, "failed to register alternate mode (%d)\n", + ret); + put_device(&alt->dev); + return ERR_PTR(ret); + } + + return alt; +} + +/** + * typec_unregister_altmode - Unregister Alternate Mode + * @alt: The alternate mode to be unregistered + * + * Unregister device created with typec_partner_register_altmode(), + * typec_plug_register_altmode() or typec_port_register_altmode(). + */ +void typec_unregister_altmode(struct typec_altmode *alt) +{ + if (!IS_ERR_OR_NULL(alt)) + device_unregister(&alt->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_altmode); + +/* ------------------------------------------------------------------------- */ +/* Type-C Partners */ + +static ssize_t accessory_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_partner *p = to_typec_partner(dev); + + return sprintf(buf, "%s\n", typec_accessory_modes[p->accessory]); +} +static DEVICE_ATTR_RO(accessory_mode); + +static ssize_t supports_usb_power_delivery_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_partner *p = to_typec_partner(dev); + + return sprintf(buf, "%s\n", p->usb_pd ? "yes" : "no"); +} +static DEVICE_ATTR_RO(supports_usb_power_delivery); + +static struct attribute *typec_partner_attrs[] = { + &dev_attr_accessory_mode.attr, + &dev_attr_supports_usb_power_delivery.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_partner); + +static void typec_partner_release(struct device *dev) +{ + struct typec_partner *partner = to_typec_partner(dev); + + kfree(partner); +} + +static const struct device_type typec_partner_dev_type = { + .name = "typec_partner", + .groups = typec_partner_groups, + .release = typec_partner_release, +}; + +/** + * typec_partner_set_identity - Report result from Discover Identity command + * @partner: The partner updated identity values + * + * This routine is used to report that the result of Discover Identity USB power + * delivery command has become available. + */ +int typec_partner_set_identity(struct typec_partner *partner) +{ + if (!partner->identity) + return -EINVAL; + + typec_report_identity(&partner->dev); + return 0; +} +EXPORT_SYMBOL_GPL(typec_partner_set_identity); + +/** + * typec_partner_register_altmode - Register USB Type-C Partner Alternate Mode + * @partner: USB Type-C Partner that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register each alternate mode individually that + * @partner has listed in response to Discover SVIDs command. The modes for a + * SVID listed in response to Discover Modes command need to be listed in an + * array in @desc. + * + * Returns handle to the alternate mode on success or NULL on failure. + */ +struct typec_altmode * +typec_partner_register_altmode(struct typec_partner *partner, + const struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&partner->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_partner_register_altmode); + +/** + * typec_register_partner - Register a USB Type-C Partner + * @port: The USB Type-C Port the partner is connected to + * @desc: Description of the partner + * + * Registers a device for USB Type-C Partner described in @desc. + * + * Returns handle to the partner on success or ERR_PTR on failure. + */ +struct typec_partner *typec_register_partner(struct typec_port *port, + struct typec_partner_desc *desc) +{ + struct typec_partner *partner; + int ret; + + partner = kzalloc(sizeof(*partner), GFP_KERNEL); + if (!partner) + return ERR_PTR(-ENOMEM); + + partner->usb_pd = desc->usb_pd; + partner->accessory = desc->accessory; + + if (desc->identity) { + /* + * Creating directory for the identity only if the driver is + * able to provide data to it. + */ + partner->dev.groups = usb_pd_id_groups; + partner->identity = desc->identity; + } + + partner->dev.class = typec_class; + partner->dev.parent = &port->dev; + partner->dev.type = &typec_partner_dev_type; + dev_set_name(&partner->dev, "%s-partner", dev_name(&port->dev)); + + ret = device_register(&partner->dev); + if (ret) { + dev_err(&port->dev, "failed to register partner (%d)\n", ret); + put_device(&partner->dev); + return ERR_PTR(ret); + } + + return partner; +} +EXPORT_SYMBOL_GPL(typec_register_partner); + +/** + * typec_unregister_partner - Unregister a USB Type-C Partner + * @partner: The partner to be unregistered + * + * Unregister device created with typec_register_partner(). + */ +void typec_unregister_partner(struct typec_partner *partner) +{ + if (!IS_ERR_OR_NULL(partner)) + device_unregister(&partner->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_partner); + +/* ------------------------------------------------------------------------- */ +/* Type-C Cable Plugs */ + +static void typec_plug_release(struct device *dev) +{ + struct typec_plug *plug = to_typec_plug(dev); + + kfree(plug); +} + +static const struct device_type typec_plug_dev_type = { + .name = "typec_plug", + .release = typec_plug_release, +}; + +/** + * typec_plug_register_altmode - Register USB Type-C Cable Plug Alternate Mode + * @plug: USB Type-C Cable Plug that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register each alternate mode individually that @plug + * has listed in response to Discover SVIDs command. The modes for a SVID that + * the plug lists in response to Discover Modes command need to be listed in an + * array in @desc. + * + * Returns handle to the alternate mode on success or ERR_PTR on failure. + */ +struct typec_altmode * +typec_plug_register_altmode(struct typec_plug *plug, + const struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&plug->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_plug_register_altmode); + +/** + * typec_register_plug - Register a USB Type-C Cable Plug + * @cable: USB Type-C Cable with the plug + * @desc: Description of the cable plug + * + * Registers a device for USB Type-C Cable Plug described in @desc. A USB Type-C + * Cable Plug represents a plug with electronics in it that can response to USB + * Power Delivery SOP Prime or SOP Double Prime packages. + * + * Returns handle to the cable plug on success or ERR_PTR on failure. + */ +struct typec_plug *typec_register_plug(struct typec_cable *cable, + struct typec_plug_desc *desc) +{ + struct typec_plug *plug; + char name[8]; + int ret; + + plug = kzalloc(sizeof(*plug), GFP_KERNEL); + if (!plug) + return ERR_PTR(-ENOMEM); + + sprintf(name, "plug%d", desc->index); + + plug->index = desc->index; + plug->dev.class = typec_class; + plug->dev.parent = &cable->dev; + plug->dev.type = &typec_plug_dev_type; + dev_set_name(&plug->dev, "%s-%s", dev_name(cable->dev.parent), name); + + ret = device_register(&plug->dev); + if (ret) { + dev_err(&cable->dev, "failed to register plug (%d)\n", ret); + put_device(&plug->dev); + return ERR_PTR(ret); + } + + return plug; +} +EXPORT_SYMBOL_GPL(typec_register_plug); + +/** + * typec_unregister_plug - Unregister a USB Type-C Cable Plug + * @plug: The cable plug to be unregistered + * + * Unregister device created with typec_register_plug(). + */ +void typec_unregister_plug(struct typec_plug *plug) +{ + if (!IS_ERR_OR_NULL(plug)) + device_unregister(&plug->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_plug); + +/* Type-C Cables */ + +static ssize_t +type_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct typec_cable *cable = to_typec_cable(dev); + + return sprintf(buf, "%s\n", cable->active ? "active" : "passive"); +} +static DEVICE_ATTR_RO(type); + +static const char * const typec_plug_types[] = { + [USB_PLUG_NONE] = "unknown", + [USB_PLUG_TYPE_A] = "type-a", + [USB_PLUG_TYPE_B] = "type-b", + [USB_PLUG_TYPE_C] = "type-c", + [USB_PLUG_CAPTIVE] = "captive", +}; + +static ssize_t plug_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_cable *cable = to_typec_cable(dev); + + return sprintf(buf, "%s\n", typec_plug_types[cable->type]); +} +static DEVICE_ATTR_RO(plug_type); + +static struct attribute *typec_cable_attrs[] = { + &dev_attr_type.attr, + &dev_attr_plug_type.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_cable); + +static void typec_cable_release(struct device *dev) +{ + struct typec_cable *cable = to_typec_cable(dev); + + kfree(cable); +} + +static const struct device_type typec_cable_dev_type = { + .name = "typec_cable", + .groups = typec_cable_groups, + .release = typec_cable_release, +}; + +/** + * typec_cable_set_identity - Report result from Discover Identity command + * @cable: The cable updated identity values + * + * This routine is used to report that the result of Discover Identity USB power + * delivery command has become available. + */ +int typec_cable_set_identity(struct typec_cable *cable) +{ + if (!cable->identity) + return -EINVAL; + + typec_report_identity(&cable->dev); + return 0; +} +EXPORT_SYMBOL_GPL(typec_cable_set_identity); + +/** + * typec_register_cable - Register a USB Type-C Cable + * @port: The USB Type-C Port the cable is connected to + * @desc: Description of the cable + * + * Registers a device for USB Type-C Cable described in @desc. The cable will be + * parent for the optional cable plug devises. + * + * Returns handle to the cable on success or ERR_PTR on failure. + */ +struct typec_cable *typec_register_cable(struct typec_port *port, + struct typec_cable_desc *desc) +{ + struct typec_cable *cable; + int ret; + + cable = kzalloc(sizeof(*cable), GFP_KERNEL); + if (!cable) + return ERR_PTR(-ENOMEM); + + cable->type = desc->type; + cable->active = desc->active; + + if (desc->identity) { + /* + * Creating directory for the identity only if the driver is + * able to provide data to it. + */ + cable->dev.groups = usb_pd_id_groups; + cable->identity = desc->identity; + } + + cable->dev.class = typec_class; + cable->dev.parent = &port->dev; + cable->dev.type = &typec_cable_dev_type; + dev_set_name(&cable->dev, "%s-cable", dev_name(&port->dev)); + + ret = device_register(&cable->dev); + if (ret) { + dev_err(&port->dev, "failed to register cable (%d)\n", ret); + put_device(&cable->dev); + return ERR_PTR(ret); + } + + return cable; +} +EXPORT_SYMBOL_GPL(typec_register_cable); + +/** + * typec_unregister_cable - Unregister a USB Type-C Cable + * @cable: The cable to be unregistered + * + * Unregister device created with typec_register_cable(). + */ +void typec_unregister_cable(struct typec_cable *cable) +{ + if (!IS_ERR_OR_NULL(cable)) + device_unregister(&cable->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_cable); + +/* ------------------------------------------------------------------------- */ +/* USB Type-C ports */ + +static const char * const typec_roles[] = { + [TYPEC_SINK] = "sink", + [TYPEC_SOURCE] = "source", +}; + +static const char * const typec_data_roles[] = { + [TYPEC_DEVICE] = "device", + [TYPEC_HOST] = "host", +}; + +static const char * const typec_port_types[] = { + [TYPEC_PORT_DFP] = "source", + [TYPEC_PORT_UFP] = "sink", + [TYPEC_PORT_DRP] = "dual", +}; + +static const char * const typec_port_types_drp[] = { + [TYPEC_PORT_DFP] = "dual [source] sink", + [TYPEC_PORT_UFP] = "dual source [sink]", + [TYPEC_PORT_DRP] = "[dual] source sink", +}; + +static ssize_t +preferred_role_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int role; + int ret; + + if (port->cap->type != TYPEC_PORT_DRP) { + dev_dbg(dev, "Preferred role only supported with DRP ports\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->try_role) { + dev_dbg(dev, "Setting preferred role not supported\n"); + return -EOPNOTSUPP; + } + + role = sysfs_match_string(typec_roles, buf); + if (role < 0) { + if (sysfs_streq(buf, "none")) + role = TYPEC_NO_PREFERRED_ROLE; + else + return -EINVAL; + } + + ret = port->cap->try_role(port->cap, role); + if (ret) + return ret; + + port->prefer_role = role; + return size; +} + +static ssize_t +preferred_role_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type != TYPEC_PORT_DRP) + return 0; + + if (port->prefer_role < 0) + return 0; + + return sprintf(buf, "%s\n", typec_roles[port->prefer_role]); +} +static DEVICE_ATTR_RW(preferred_role); + +static ssize_t data_role_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret; + + if (!port->cap->dr_set) { + dev_dbg(dev, "data role swapping not supported\n"); + return -EOPNOTSUPP; + } + + ret = sysfs_match_string(typec_data_roles, buf); + if (ret < 0) + return ret; + + mutex_lock(&port->port_type_lock); + if (port->port_type != TYPEC_PORT_DRP) { + dev_dbg(dev, "port type fixed at \"%s\"", + typec_port_types[port->port_type]); + ret = -EOPNOTSUPP; + goto unlock_and_ret; + } + + ret = port->cap->dr_set(port->cap, ret); + if (ret) + goto unlock_and_ret; + + ret = size; +unlock_and_ret: + mutex_unlock(&port->port_type_lock); + return ret; +} + +static ssize_t data_role_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type == TYPEC_PORT_DRP) + return sprintf(buf, "%s\n", port->data_role == TYPEC_HOST ? + "[host] device" : "host [device]"); + + return sprintf(buf, "[%s]\n", typec_data_roles[port->data_role]); +} +static DEVICE_ATTR_RW(data_role); + +static ssize_t power_role_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret; + + if (!port->cap->pd_revision) { + dev_dbg(dev, "USB Power Delivery not supported\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->pr_set) { + dev_dbg(dev, "power role swapping not supported\n"); + return -EOPNOTSUPP; + } + + if (port->pwr_opmode != TYPEC_PWR_MODE_PD) { + dev_dbg(dev, "partner unable to swap power role\n"); + return -EIO; + } + + ret = sysfs_match_string(typec_roles, buf); + if (ret < 0) + return ret; + + mutex_lock(&port->port_type_lock); + if (port->port_type != TYPEC_PORT_DRP) { + dev_dbg(dev, "port type fixed at \"%s\"", + typec_port_types[port->port_type]); + ret = -EOPNOTSUPP; + goto unlock_and_ret; + } + + ret = port->cap->pr_set(port->cap, ret); + if (ret) + goto unlock_and_ret; + + ret = size; +unlock_and_ret: + mutex_unlock(&port->port_type_lock); + return ret; +} + +static ssize_t power_role_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type == TYPEC_PORT_DRP) + return sprintf(buf, "%s\n", port->pwr_role == TYPEC_SOURCE ? + "[source] sink" : "source [sink]"); + + return sprintf(buf, "[%s]\n", typec_roles[port->pwr_role]); +} +static DEVICE_ATTR_RW(power_role); + +static ssize_t +port_type_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret; + enum typec_port_type type; + + if (!port->cap->port_type_set || port->cap->type != TYPEC_PORT_DRP) { + dev_dbg(dev, "changing port type not supported\n"); + return -EOPNOTSUPP; + } + + ret = sysfs_match_string(typec_port_types, buf); + if (ret < 0) + return ret; + + type = ret; + mutex_lock(&port->port_type_lock); + + if (port->port_type == type) { + ret = size; + goto unlock_and_ret; + } + + ret = port->cap->port_type_set(port->cap, type); + if (ret) + goto unlock_and_ret; + + port->port_type = type; + ret = size; + +unlock_and_ret: + mutex_unlock(&port->port_type_lock); + return ret; +} + +static ssize_t +port_type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type == TYPEC_PORT_DRP) + return sprintf(buf, "%s\n", + typec_port_types_drp[port->port_type]); + + return sprintf(buf, "[%s]\n", typec_port_types[port->cap->type]); +} +static DEVICE_ATTR_RW(port_type); + +static const char * const typec_pwr_opmodes[] = { + [TYPEC_PWR_MODE_USB] = "default", + [TYPEC_PWR_MODE_1_5A] = "1.5A", + [TYPEC_PWR_MODE_3_0A] = "3.0A", + [TYPEC_PWR_MODE_PD] = "usb_power_delivery", +}; + +static ssize_t power_operation_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + return sprintf(buf, "%s\n", typec_pwr_opmodes[port->pwr_opmode]); +} +static DEVICE_ATTR_RO(power_operation_mode); + +static ssize_t vconn_source_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + bool source; + int ret; + + if (!port->cap->pd_revision) { + dev_dbg(dev, "VCONN swap depends on USB Power Delivery\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->vconn_set) { + dev_dbg(dev, "VCONN swapping not supported\n"); + return -EOPNOTSUPP; + } + + ret = kstrtobool(buf, &source); + if (ret) + return ret; + + ret = port->cap->vconn_set(port->cap, (enum typec_role)source); + if (ret) + return ret; + + return size; +} + +static ssize_t vconn_source_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + return sprintf(buf, "%s\n", + port->vconn_role == TYPEC_SOURCE ? "yes" : "no"); +} +static DEVICE_ATTR_RW(vconn_source); + +static ssize_t supported_accessory_modes_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + ssize_t ret = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(port->cap->accessory); i++) { + if (port->cap->accessory[i]) + ret += sprintf(buf + ret, "%s ", + typec_accessory_modes[port->cap->accessory[i]]); + } + + if (!ret) + return sprintf(buf, "none\n"); + + buf[ret - 1] = '\n'; + + return ret; +} +static DEVICE_ATTR_RO(supported_accessory_modes); + +static ssize_t usb_typec_revision_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + u16 rev = port->cap->revision; + + return sprintf(buf, "%d.%d\n", (rev >> 8) & 0xff, (rev >> 4) & 0xf); +} +static DEVICE_ATTR_RO(usb_typec_revision); + +static ssize_t usb_power_delivery_revision_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *p = to_typec_port(dev); + + return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff); +} +static DEVICE_ATTR_RO(usb_power_delivery_revision); + +static struct attribute *typec_attrs[] = { + &dev_attr_data_role.attr, + &dev_attr_power_operation_mode.attr, + &dev_attr_power_role.attr, + &dev_attr_preferred_role.attr, + &dev_attr_supported_accessory_modes.attr, + &dev_attr_usb_power_delivery_revision.attr, + &dev_attr_usb_typec_revision.attr, + &dev_attr_vconn_source.attr, + &dev_attr_port_type.attr, + NULL, +}; +ATTRIBUTE_GROUPS(typec); + +static int typec_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + int ret; + + ret = add_uevent_var(env, "TYPEC_PORT=%s", dev_name(dev)); + if (ret) + dev_err(dev, "failed to add uevent TYPEC_PORT\n"); + + return ret; +} + +static void typec_release(struct device *dev) +{ + struct typec_port *port = to_typec_port(dev); + + ida_simple_remove(&typec_index_ida, port->id); + typec_switch_put(port->sw); + typec_mux_put(port->mux); + kfree(port); +} + +static const struct device_type typec_port_dev_type = { + .name = "typec_port", + .groups = typec_groups, + .uevent = typec_uevent, + .release = typec_release, +}; + +/* --------------------------------------- */ +/* Driver callbacks to report role updates */ + +/** + * typec_set_data_role - Report data role change + * @port: The USB Type-C Port where the role was changed + * @role: The new data role + * + * This routine is used by the port drivers to report data role changes. + */ +void typec_set_data_role(struct typec_port *port, enum typec_data_role role) +{ + if (port->data_role == role) + return; + + port->data_role = role; + sysfs_notify(&port->dev.kobj, NULL, "data_role"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_data_role); + +/** + * typec_set_pwr_role - Report power role change + * @port: The USB Type-C Port where the role was changed + * @role: The new data role + * + * This routine is used by the port drivers to report power role changes. + */ +void typec_set_pwr_role(struct typec_port *port, enum typec_role role) +{ + if (port->pwr_role == role) + return; + + port->pwr_role = role; + sysfs_notify(&port->dev.kobj, NULL, "power_role"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_pwr_role); + +/** + * typec_set_pwr_role - Report VCONN source change + * @port: The USB Type-C Port which VCONN role changed + * @role: Source when @port is sourcing VCONN, or Sink when it's not + * + * This routine is used by the port drivers to report if the VCONN source is + * changes. + */ +void typec_set_vconn_role(struct typec_port *port, enum typec_role role) +{ + if (port->vconn_role == role) + return; + + port->vconn_role = role; + sysfs_notify(&port->dev.kobj, NULL, "vconn_source"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_vconn_role); + +static int partner_match(struct device *dev, void *data) +{ + return is_typec_partner(dev); +} + +/** + * typec_set_pwr_opmode - Report changed power operation mode + * @port: The USB Type-C Port where the mode was changed + * @opmode: New power operation mode + * + * This routine is used by the port drivers to report changed power operation + * mode in @port. The modes are USB (default), 1.5A, 3.0A as defined in USB + * Type-C specification, and "USB Power Delivery" when the power levels are + * negotiated with methods defined in USB Power Delivery specification. + */ +void typec_set_pwr_opmode(struct typec_port *port, + enum typec_pwr_opmode opmode) +{ + struct device *partner_dev; + + if (port->pwr_opmode == opmode) + return; + + port->pwr_opmode = opmode; + sysfs_notify(&port->dev.kobj, NULL, "power_operation_mode"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); + + partner_dev = device_find_child(&port->dev, NULL, partner_match); + if (partner_dev) { + struct typec_partner *partner = to_typec_partner(partner_dev); + + if (opmode == TYPEC_PWR_MODE_PD && !partner->usb_pd) { + partner->usb_pd = 1; + sysfs_notify(&partner_dev->kobj, NULL, + "supports_usb_power_delivery"); + } + put_device(partner_dev); + } +} +EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); + +/* ------------------------------------------ */ +/* API for Multiplexer/DeMultiplexer Switches */ + +/** + * typec_set_orientation - Set USB Type-C cable plug orientation + * @port: USB Type-C Port + * @orientation: USB Type-C cable plug orientation + * + * Set cable plug orientation for @port. + */ +int typec_set_orientation(struct typec_port *port, + enum typec_orientation orientation) +{ + int ret; + + if (port->sw) { + ret = port->sw->set(port->sw, orientation); + if (ret) + return ret; + } + + port->orientation = orientation; + + return 0; +} +EXPORT_SYMBOL_GPL(typec_set_orientation); + +/** + * typec_set_mode - Set mode of operation for USB Type-C connector + * @port: USB Type-C port for the connector + * @mode: Operation mode for the connector + * + * Set mode @mode for @port. This function will configure the muxes needed to + * enter @mode. + */ +int typec_set_mode(struct typec_port *port, int mode) +{ + return port->mux ? port->mux->set(port->mux, mode) : 0; +} +EXPORT_SYMBOL_GPL(typec_set_mode); + +/* --------------------------------------- */ + +/** + * typec_port_register_altmode - Register USB Type-C Port Alternate Mode + * @port: USB Type-C Port that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register an alternate mode that @port is capable of + * supporting. + * + * Returns handle to the alternate mode on success or ERR_PTR on failure. + */ +struct typec_altmode * +typec_port_register_altmode(struct typec_port *port, + const struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&port->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_port_register_altmode); + +/** + * typec_register_port - Register a USB Type-C Port + * @parent: Parent device + * @cap: Description of the port + * + * Registers a device for USB Type-C Port described in @cap. + * + * Returns handle to the port on success or ERR_PTR on failure. + */ +struct typec_port *typec_register_port(struct device *parent, + const struct typec_capability *cap) +{ + struct typec_port *port; + int role; + int ret; + int id; + + port = kzalloc(sizeof(*port), GFP_KERNEL); + if (!port) + return ERR_PTR(-ENOMEM); + + id = ida_simple_get(&typec_index_ida, 0, 0, GFP_KERNEL); + if (id < 0) { + kfree(port); + return ERR_PTR(id); + } + + port->sw = typec_switch_get(cap->fwnode ? &port->dev : parent); + if (IS_ERR(port->sw)) { + ret = PTR_ERR(port->sw); + goto err_switch; + } + + port->mux = typec_mux_get(cap->fwnode ? &port->dev : parent); + if (IS_ERR(port->mux)) { + ret = PTR_ERR(port->mux); + goto err_mux; + } + + if (cap->type == TYPEC_PORT_DFP) + role = TYPEC_SOURCE; + else if (cap->type == TYPEC_PORT_UFP) + role = TYPEC_SINK; + else + role = cap->prefer_role; + + if (role == TYPEC_SOURCE) { + port->data_role = TYPEC_HOST; + port->pwr_role = TYPEC_SOURCE; + port->vconn_role = TYPEC_SOURCE; + } else { + port->data_role = TYPEC_DEVICE; + port->pwr_role = TYPEC_SINK; + port->vconn_role = TYPEC_SINK; + } + + port->id = id; + port->cap = cap; + port->port_type = cap->type; + mutex_init(&port->port_type_lock); + port->prefer_role = cap->prefer_role; + + port->dev.class = typec_class; + port->dev.parent = parent; + port->dev.fwnode = cap->fwnode; + port->dev.type = &typec_port_dev_type; + dev_set_name(&port->dev, "port%d", id); + + ret = device_register(&port->dev); + if (ret) { + dev_err(parent, "failed to register port (%d)\n", ret); + put_device(&port->dev); + return ERR_PTR(ret); + } + + return port; + +err_mux: + typec_switch_put(port->sw); + +err_switch: + ida_simple_remove(&typec_index_ida, port->id); + kfree(port); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(typec_register_port); + +/** + * typec_unregister_port - Unregister a USB Type-C Port + * @port: The port to be unregistered + * + * Unregister device created with typec_register_port(). + */ +void typec_unregister_port(struct typec_port *port) +{ + if (!IS_ERR_OR_NULL(port)) + device_unregister(&port->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_port); + +static int __init typec_init(void) +{ + typec_class = class_create(THIS_MODULE, "typec"); + return PTR_ERR_OR_ZERO(typec_class); +} +subsys_initcall(typec_init); + +static void __exit typec_exit(void) +{ + class_destroy(typec_class); + ida_destroy(&typec_index_ida); +} +module_exit(typec_exit); + +MODULE_AUTHOR("Heikki Krogerus "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("USB Type-C Connector Class"); diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c new file mode 100644 index 000000000000..f89093bd7185 --- /dev/null +++ b/drivers/usb/typec/mux.c @@ -0,0 +1,191 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * USB Type-C Multiplexer/DeMultiplexer Switch support + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus + * Hans de Goede + */ + +#include +#include +#include +#include + +static DEFINE_MUTEX(switch_lock); +static DEFINE_MUTEX(mux_lock); +static LIST_HEAD(switch_list); +static LIST_HEAD(mux_list); + +static void *typec_switch_match(struct device_connection *con, int ep, + void *data) +{ + struct typec_switch *sw; + + list_for_each_entry(sw, &switch_list, entry) + if (!strcmp(con->endpoint[ep], dev_name(sw->dev))) + return sw; + + /* + * We only get called if a connection was found, tell the caller to + * wait for the switch to show up. + */ + return ERR_PTR(-EPROBE_DEFER); +} + +/** + * typec_switch_get - Find USB Type-C orientation switch + * @dev: The caller device + * + * Finds a switch linked with @dev. Returns a reference to the switch on + * success, NULL if no matching connection was found, or + * ERR_PTR(-EPROBE_DEFER) when a connection was found but the switch + * has not been enumerated yet. + */ +struct typec_switch *typec_switch_get(struct device *dev) +{ + struct typec_switch *sw; + + mutex_lock(&switch_lock); + sw = device_connection_find_match(dev, "typec-switch", NULL, + typec_switch_match); + if (!IS_ERR_OR_NULL(sw)) + get_device(sw->dev); + mutex_unlock(&switch_lock); + + return sw; +} +EXPORT_SYMBOL_GPL(typec_switch_get); + +/** + * typec_put_switch - Release USB Type-C orientation switch + * @sw: USB Type-C orientation switch + * + * Decrement reference count for @sw. + */ +void typec_switch_put(struct typec_switch *sw) +{ + if (!IS_ERR_OR_NULL(sw)) + put_device(sw->dev); +} +EXPORT_SYMBOL_GPL(typec_switch_put); + +/** + * typec_switch_register - Register USB Type-C orientation switch + * @sw: USB Type-C orientation switch + * + * This function registers a switch that can be used for routing the correct + * data pairs depending on the cable plug orientation from the USB Type-C + * connector to the USB controllers. USB Type-C plugs can be inserted + * right-side-up or upside-down. + */ +int typec_switch_register(struct typec_switch *sw) +{ + mutex_lock(&switch_lock); + list_add_tail(&sw->entry, &switch_list); + mutex_unlock(&switch_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(typec_switch_register); + +/** + * typec_switch_unregister - Unregister USB Type-C orientation switch + * @sw: USB Type-C orientation switch + * + * Unregister switch that was registered with typec_switch_register(). + */ +void typec_switch_unregister(struct typec_switch *sw) +{ + mutex_lock(&switch_lock); + list_del(&sw->entry); + mutex_unlock(&switch_lock); +} +EXPORT_SYMBOL_GPL(typec_switch_unregister); + +/* ------------------------------------------------------------------------- */ + +static void *typec_mux_match(struct device_connection *con, int ep, void *data) +{ + struct typec_mux *mux; + + list_for_each_entry(mux, &mux_list, entry) + if (!strcmp(con->endpoint[ep], dev_name(mux->dev))) + return mux; + + /* + * We only get called if a connection was found, tell the caller to + * wait for the switch to show up. + */ + return ERR_PTR(-EPROBE_DEFER); +} + +/** + * typec_mux_get - Find USB Type-C Multiplexer + * @dev: The caller device + * + * Finds a mux linked to the caller. This function is primarily meant for the + * Type-C drivers. Returns a reference to the mux on success, NULL if no + * matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a connection + * was found but the mux has not been enumerated yet. + */ +struct typec_mux *typec_mux_get(struct device *dev) +{ + struct typec_mux *mux; + + mutex_lock(&mux_lock); + mux = device_connection_find_match(dev, "typec-mux", NULL, + typec_mux_match); + if (!IS_ERR_OR_NULL(mux)) + get_device(mux->dev); + mutex_unlock(&mux_lock); + + return mux; +} +EXPORT_SYMBOL_GPL(typec_mux_get); + +/** + * typec_mux_put - Release handle to a Multiplexer + * @mux: USB Type-C Connector Multiplexer/DeMultiplexer + * + * Decrements reference count for @mux. + */ +void typec_mux_put(struct typec_mux *mux) +{ + if (!IS_ERR_OR_NULL(mux)) + put_device(mux->dev); +} +EXPORT_SYMBOL_GPL(typec_mux_put); + +/** + * typec_mux_register - Register Multiplexer routing USB Type-C pins + * @mux: USB Type-C Connector Multiplexer/DeMultiplexer + * + * USB Type-C connectors can be used for alternate modes of operation besides + * USB when Accessory/Alternate Modes are supported. With some of those modes, + * the pins on the connector need to be reconfigured. This function registers + * multiplexer switches routing the pins on the connector. + */ +int typec_mux_register(struct typec_mux *mux) +{ + mutex_lock(&mux_lock); + list_add_tail(&mux->entry, &mux_list); + mutex_unlock(&mux_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(typec_mux_register); + +/** + * typec_mux_unregister - Unregister Multiplexer Switch + * @sw: USB Type-C Connector Multiplexer/DeMultiplexer + * + * Unregister mux that was registered with typec_mux_register(). + */ +void typec_mux_unregister(struct typec_mux *mux) +{ + mutex_lock(&mux_lock); + list_del(&mux->entry); + mutex_unlock(&mux_lock); +} +EXPORT_SYMBOL_GPL(typec_mux_unregister); diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c deleted file mode 100644 index dc28ad868d93..000000000000 --- a/drivers/usb/typec/typec.c +++ /dev/null @@ -1,1365 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * USB Type-C Connector Class - * - * Copyright (C) 2017, Intel Corporation - * Author: Heikki Krogerus - */ - -#include -#include -#include -#include -#include - -struct typec_mode { - int index; - u32 vdo; - char *desc; - enum typec_port_type roles; - - struct typec_altmode *alt_mode; - - unsigned int active:1; - - char group_name[6]; - struct attribute_group group; - struct attribute *attrs[5]; - struct device_attribute vdo_attr; - struct device_attribute desc_attr; - struct device_attribute active_attr; - struct device_attribute roles_attr; -}; - -struct typec_altmode { - struct device dev; - u16 svid; - int n_modes; - struct typec_mode modes[ALTMODE_MAX_MODES]; - const struct attribute_group *mode_groups[ALTMODE_MAX_MODES]; -}; - -struct typec_plug { - struct device dev; - enum typec_plug_index index; -}; - -struct typec_cable { - struct device dev; - enum typec_plug_type type; - struct usb_pd_identity *identity; - unsigned int active:1; -}; - -struct typec_partner { - struct device dev; - unsigned int usb_pd:1; - struct usb_pd_identity *identity; - enum typec_accessory accessory; -}; - -struct typec_port { - unsigned int id; - struct device dev; - - int prefer_role; - enum typec_data_role data_role; - enum typec_role pwr_role; - enum typec_role vconn_role; - enum typec_pwr_opmode pwr_opmode; - enum typec_port_type port_type; - struct mutex port_type_lock; - - const struct typec_capability *cap; -}; - -#define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev) -#define to_typec_plug(_dev_) container_of(_dev_, struct typec_plug, dev) -#define to_typec_cable(_dev_) container_of(_dev_, struct typec_cable, dev) -#define to_typec_partner(_dev_) container_of(_dev_, struct typec_partner, dev) -#define to_altmode(_dev_) container_of(_dev_, struct typec_altmode, dev) - -static const struct device_type typec_partner_dev_type; -static const struct device_type typec_cable_dev_type; -static const struct device_type typec_plug_dev_type; -static const struct device_type typec_port_dev_type; - -#define is_typec_partner(_dev_) (_dev_->type == &typec_partner_dev_type) -#define is_typec_cable(_dev_) (_dev_->type == &typec_cable_dev_type) -#define is_typec_plug(_dev_) (_dev_->type == &typec_plug_dev_type) -#define is_typec_port(_dev_) (_dev_->type == &typec_port_dev_type) - -static DEFINE_IDA(typec_index_ida); -static struct class *typec_class; - -/* Common attributes */ - -static const char * const typec_accessory_modes[] = { - [TYPEC_ACCESSORY_NONE] = "none", - [TYPEC_ACCESSORY_AUDIO] = "analog_audio", - [TYPEC_ACCESSORY_DEBUG] = "debug", -}; - -static struct usb_pd_identity *get_pd_identity(struct device *dev) -{ - if (is_typec_partner(dev)) { - struct typec_partner *partner = to_typec_partner(dev); - - return partner->identity; - } else if (is_typec_cable(dev)) { - struct typec_cable *cable = to_typec_cable(dev); - - return cable->identity; - } - return NULL; -} - -static ssize_t id_header_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct usb_pd_identity *id = get_pd_identity(dev); - - return sprintf(buf, "0x%08x\n", id->id_header); -} -static DEVICE_ATTR_RO(id_header); - -static ssize_t cert_stat_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct usb_pd_identity *id = get_pd_identity(dev); - - return sprintf(buf, "0x%08x\n", id->cert_stat); -} -static DEVICE_ATTR_RO(cert_stat); - -static ssize_t product_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct usb_pd_identity *id = get_pd_identity(dev); - - return sprintf(buf, "0x%08x\n", id->product); -} -static DEVICE_ATTR_RO(product); - -static struct attribute *usb_pd_id_attrs[] = { - &dev_attr_id_header.attr, - &dev_attr_cert_stat.attr, - &dev_attr_product.attr, - NULL -}; - -static const struct attribute_group usb_pd_id_group = { - .name = "identity", - .attrs = usb_pd_id_attrs, -}; - -static const struct attribute_group *usb_pd_id_groups[] = { - &usb_pd_id_group, - NULL, -}; - -static void typec_report_identity(struct device *dev) -{ - sysfs_notify(&dev->kobj, "identity", "id_header"); - sysfs_notify(&dev->kobj, "identity", "cert_stat"); - sysfs_notify(&dev->kobj, "identity", "product"); -} - -/* ------------------------------------------------------------------------- */ -/* Alternate Modes */ - -/** - * typec_altmode_update_active - Report Enter/Exit mode - * @alt: Handle to the alternate mode - * @mode: Mode index - * @active: True when the mode has been entered - * - * If a partner or cable plug executes Enter/Exit Mode command successfully, the - * drivers use this routine to report the updated state of the mode. - */ -void typec_altmode_update_active(struct typec_altmode *alt, int mode, - bool active) -{ - struct typec_mode *m = &alt->modes[mode]; - char dir[6]; - - if (m->active == active) - return; - - m->active = active; - snprintf(dir, sizeof(dir), "mode%d", mode); - sysfs_notify(&alt->dev.kobj, dir, "active"); - kobject_uevent(&alt->dev.kobj, KOBJ_CHANGE); -} -EXPORT_SYMBOL_GPL(typec_altmode_update_active); - -/** - * typec_altmode2port - Alternate Mode to USB Type-C port - * @alt: The Alternate Mode - * - * Returns handle to the port that a cable plug or partner with @alt is - * connected to. - */ -struct typec_port *typec_altmode2port(struct typec_altmode *alt) -{ - if (is_typec_plug(alt->dev.parent)) - return to_typec_port(alt->dev.parent->parent->parent); - if (is_typec_partner(alt->dev.parent)) - return to_typec_port(alt->dev.parent->parent); - if (is_typec_port(alt->dev.parent)) - return to_typec_port(alt->dev.parent); - - return NULL; -} -EXPORT_SYMBOL_GPL(typec_altmode2port); - -static ssize_t -typec_altmode_vdo_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_mode *mode = container_of(attr, struct typec_mode, - vdo_attr); - - return sprintf(buf, "0x%08x\n", mode->vdo); -} - -static ssize_t -typec_altmode_desc_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_mode *mode = container_of(attr, struct typec_mode, - desc_attr); - - return sprintf(buf, "%s\n", mode->desc ? mode->desc : ""); -} - -static ssize_t -typec_altmode_active_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_mode *mode = container_of(attr, struct typec_mode, - active_attr); - - return sprintf(buf, "%s\n", mode->active ? "yes" : "no"); -} - -static ssize_t -typec_altmode_active_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_mode *mode = container_of(attr, struct typec_mode, - active_attr); - struct typec_port *port = typec_altmode2port(mode->alt_mode); - bool activate; - int ret; - - if (!port->cap->activate_mode) - return -EOPNOTSUPP; - - ret = kstrtobool(buf, &activate); - if (ret) - return ret; - - ret = port->cap->activate_mode(port->cap, mode->index, activate); - if (ret) - return ret; - - return size; -} - -static ssize_t -typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_mode *mode = container_of(attr, struct typec_mode, - roles_attr); - ssize_t ret; - - switch (mode->roles) { - case TYPEC_PORT_DFP: - ret = sprintf(buf, "source\n"); - break; - case TYPEC_PORT_UFP: - ret = sprintf(buf, "sink\n"); - break; - case TYPEC_PORT_DRP: - default: - ret = sprintf(buf, "source sink\n"); - break; - } - return ret; -} - -static void typec_init_modes(struct typec_altmode *alt, - const struct typec_mode_desc *desc, bool is_port) -{ - int i; - - for (i = 0; i < alt->n_modes; i++, desc++) { - struct typec_mode *mode = &alt->modes[i]; - - /* Not considering the human readable description critical */ - mode->desc = kstrdup(desc->desc, GFP_KERNEL); - if (desc->desc && !mode->desc) - dev_err(&alt->dev, "failed to copy mode%d desc\n", i); - - mode->alt_mode = alt; - mode->vdo = desc->vdo; - mode->roles = desc->roles; - mode->index = desc->index; - sprintf(mode->group_name, "mode%d", desc->index); - - sysfs_attr_init(&mode->vdo_attr.attr); - mode->vdo_attr.attr.name = "vdo"; - mode->vdo_attr.attr.mode = 0444; - mode->vdo_attr.show = typec_altmode_vdo_show; - - sysfs_attr_init(&mode->desc_attr.attr); - mode->desc_attr.attr.name = "description"; - mode->desc_attr.attr.mode = 0444; - mode->desc_attr.show = typec_altmode_desc_show; - - sysfs_attr_init(&mode->active_attr.attr); - mode->active_attr.attr.name = "active"; - mode->active_attr.attr.mode = 0644; - mode->active_attr.show = typec_altmode_active_show; - mode->active_attr.store = typec_altmode_active_store; - - mode->attrs[0] = &mode->vdo_attr.attr; - mode->attrs[1] = &mode->desc_attr.attr; - mode->attrs[2] = &mode->active_attr.attr; - - /* With ports, list the roles that the mode is supported with */ - if (is_port) { - sysfs_attr_init(&mode->roles_attr.attr); - mode->roles_attr.attr.name = "supported_roles"; - mode->roles_attr.attr.mode = 0444; - mode->roles_attr.show = typec_altmode_roles_show; - - mode->attrs[3] = &mode->roles_attr.attr; - } - - mode->group.attrs = mode->attrs; - mode->group.name = mode->group_name; - - alt->mode_groups[i] = &mode->group; - } -} - -static ssize_t svid_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_altmode *alt = to_altmode(dev); - - return sprintf(buf, "%04x\n", alt->svid); -} -static DEVICE_ATTR_RO(svid); - -static struct attribute *typec_altmode_attrs[] = { - &dev_attr_svid.attr, - NULL -}; -ATTRIBUTE_GROUPS(typec_altmode); - -static void typec_altmode_release(struct device *dev) -{ - struct typec_altmode *alt = to_altmode(dev); - int i; - - for (i = 0; i < alt->n_modes; i++) - kfree(alt->modes[i].desc); - kfree(alt); -} - -static const struct device_type typec_altmode_dev_type = { - .name = "typec_alternate_mode", - .groups = typec_altmode_groups, - .release = typec_altmode_release, -}; - -static struct typec_altmode * -typec_register_altmode(struct device *parent, - const struct typec_altmode_desc *desc) -{ - struct typec_altmode *alt; - int ret; - - alt = kzalloc(sizeof(*alt), GFP_KERNEL); - if (!alt) - return ERR_PTR(-ENOMEM); - - alt->svid = desc->svid; - alt->n_modes = desc->n_modes; - typec_init_modes(alt, desc->modes, is_typec_port(parent)); - - alt->dev.parent = parent; - alt->dev.groups = alt->mode_groups; - alt->dev.type = &typec_altmode_dev_type; - dev_set_name(&alt->dev, "svid-%04x", alt->svid); - - ret = device_register(&alt->dev); - if (ret) { - dev_err(parent, "failed to register alternate mode (%d)\n", - ret); - put_device(&alt->dev); - return ERR_PTR(ret); - } - - return alt; -} - -/** - * typec_unregister_altmode - Unregister Alternate Mode - * @alt: The alternate mode to be unregistered - * - * Unregister device created with typec_partner_register_altmode(), - * typec_plug_register_altmode() or typec_port_register_altmode(). - */ -void typec_unregister_altmode(struct typec_altmode *alt) -{ - if (!IS_ERR_OR_NULL(alt)) - device_unregister(&alt->dev); -} -EXPORT_SYMBOL_GPL(typec_unregister_altmode); - -/* ------------------------------------------------------------------------- */ -/* Type-C Partners */ - -static ssize_t accessory_mode_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_partner *p = to_typec_partner(dev); - - return sprintf(buf, "%s\n", typec_accessory_modes[p->accessory]); -} -static DEVICE_ATTR_RO(accessory_mode); - -static ssize_t supports_usb_power_delivery_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_partner *p = to_typec_partner(dev); - - return sprintf(buf, "%s\n", p->usb_pd ? "yes" : "no"); -} -static DEVICE_ATTR_RO(supports_usb_power_delivery); - -static struct attribute *typec_partner_attrs[] = { - &dev_attr_accessory_mode.attr, - &dev_attr_supports_usb_power_delivery.attr, - NULL -}; -ATTRIBUTE_GROUPS(typec_partner); - -static void typec_partner_release(struct device *dev) -{ - struct typec_partner *partner = to_typec_partner(dev); - - kfree(partner); -} - -static const struct device_type typec_partner_dev_type = { - .name = "typec_partner", - .groups = typec_partner_groups, - .release = typec_partner_release, -}; - -/** - * typec_partner_set_identity - Report result from Discover Identity command - * @partner: The partner updated identity values - * - * This routine is used to report that the result of Discover Identity USB power - * delivery command has become available. - */ -int typec_partner_set_identity(struct typec_partner *partner) -{ - if (!partner->identity) - return -EINVAL; - - typec_report_identity(&partner->dev); - return 0; -} -EXPORT_SYMBOL_GPL(typec_partner_set_identity); - -/** - * typec_partner_register_altmode - Register USB Type-C Partner Alternate Mode - * @partner: USB Type-C Partner that supports the alternate mode - * @desc: Description of the alternate mode - * - * This routine is used to register each alternate mode individually that - * @partner has listed in response to Discover SVIDs command. The modes for a - * SVID listed in response to Discover Modes command need to be listed in an - * array in @desc. - * - * Returns handle to the alternate mode on success or NULL on failure. - */ -struct typec_altmode * -typec_partner_register_altmode(struct typec_partner *partner, - const struct typec_altmode_desc *desc) -{ - return typec_register_altmode(&partner->dev, desc); -} -EXPORT_SYMBOL_GPL(typec_partner_register_altmode); - -/** - * typec_register_partner - Register a USB Type-C Partner - * @port: The USB Type-C Port the partner is connected to - * @desc: Description of the partner - * - * Registers a device for USB Type-C Partner described in @desc. - * - * Returns handle to the partner on success or ERR_PTR on failure. - */ -struct typec_partner *typec_register_partner(struct typec_port *port, - struct typec_partner_desc *desc) -{ - struct typec_partner *partner; - int ret; - - partner = kzalloc(sizeof(*partner), GFP_KERNEL); - if (!partner) - return ERR_PTR(-ENOMEM); - - partner->usb_pd = desc->usb_pd; - partner->accessory = desc->accessory; - - if (desc->identity) { - /* - * Creating directory for the identity only if the driver is - * able to provide data to it. - */ - partner->dev.groups = usb_pd_id_groups; - partner->identity = desc->identity; - } - - partner->dev.class = typec_class; - partner->dev.parent = &port->dev; - partner->dev.type = &typec_partner_dev_type; - dev_set_name(&partner->dev, "%s-partner", dev_name(&port->dev)); - - ret = device_register(&partner->dev); - if (ret) { - dev_err(&port->dev, "failed to register partner (%d)\n", ret); - put_device(&partner->dev); - return ERR_PTR(ret); - } - - return partner; -} -EXPORT_SYMBOL_GPL(typec_register_partner); - -/** - * typec_unregister_partner - Unregister a USB Type-C Partner - * @partner: The partner to be unregistered - * - * Unregister device created with typec_register_partner(). - */ -void typec_unregister_partner(struct typec_partner *partner) -{ - if (!IS_ERR_OR_NULL(partner)) - device_unregister(&partner->dev); -} -EXPORT_SYMBOL_GPL(typec_unregister_partner); - -/* ------------------------------------------------------------------------- */ -/* Type-C Cable Plugs */ - -static void typec_plug_release(struct device *dev) -{ - struct typec_plug *plug = to_typec_plug(dev); - - kfree(plug); -} - -static const struct device_type typec_plug_dev_type = { - .name = "typec_plug", - .release = typec_plug_release, -}; - -/** - * typec_plug_register_altmode - Register USB Type-C Cable Plug Alternate Mode - * @plug: USB Type-C Cable Plug that supports the alternate mode - * @desc: Description of the alternate mode - * - * This routine is used to register each alternate mode individually that @plug - * has listed in response to Discover SVIDs command. The modes for a SVID that - * the plug lists in response to Discover Modes command need to be listed in an - * array in @desc. - * - * Returns handle to the alternate mode on success or ERR_PTR on failure. - */ -struct typec_altmode * -typec_plug_register_altmode(struct typec_plug *plug, - const struct typec_altmode_desc *desc) -{ - return typec_register_altmode(&plug->dev, desc); -} -EXPORT_SYMBOL_GPL(typec_plug_register_altmode); - -/** - * typec_register_plug - Register a USB Type-C Cable Plug - * @cable: USB Type-C Cable with the plug - * @desc: Description of the cable plug - * - * Registers a device for USB Type-C Cable Plug described in @desc. A USB Type-C - * Cable Plug represents a plug with electronics in it that can response to USB - * Power Delivery SOP Prime or SOP Double Prime packages. - * - * Returns handle to the cable plug on success or ERR_PTR on failure. - */ -struct typec_plug *typec_register_plug(struct typec_cable *cable, - struct typec_plug_desc *desc) -{ - struct typec_plug *plug; - char name[8]; - int ret; - - plug = kzalloc(sizeof(*plug), GFP_KERNEL); - if (!plug) - return ERR_PTR(-ENOMEM); - - sprintf(name, "plug%d", desc->index); - - plug->index = desc->index; - plug->dev.class = typec_class; - plug->dev.parent = &cable->dev; - plug->dev.type = &typec_plug_dev_type; - dev_set_name(&plug->dev, "%s-%s", dev_name(cable->dev.parent), name); - - ret = device_register(&plug->dev); - if (ret) { - dev_err(&cable->dev, "failed to register plug (%d)\n", ret); - put_device(&plug->dev); - return ERR_PTR(ret); - } - - return plug; -} -EXPORT_SYMBOL_GPL(typec_register_plug); - -/** - * typec_unregister_plug - Unregister a USB Type-C Cable Plug - * @plug: The cable plug to be unregistered - * - * Unregister device created with typec_register_plug(). - */ -void typec_unregister_plug(struct typec_plug *plug) -{ - if (!IS_ERR_OR_NULL(plug)) - device_unregister(&plug->dev); -} -EXPORT_SYMBOL_GPL(typec_unregister_plug); - -/* Type-C Cables */ - -static ssize_t -type_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct typec_cable *cable = to_typec_cable(dev); - - return sprintf(buf, "%s\n", cable->active ? "active" : "passive"); -} -static DEVICE_ATTR_RO(type); - -static const char * const typec_plug_types[] = { - [USB_PLUG_NONE] = "unknown", - [USB_PLUG_TYPE_A] = "type-a", - [USB_PLUG_TYPE_B] = "type-b", - [USB_PLUG_TYPE_C] = "type-c", - [USB_PLUG_CAPTIVE] = "captive", -}; - -static ssize_t plug_type_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct typec_cable *cable = to_typec_cable(dev); - - return sprintf(buf, "%s\n", typec_plug_types[cable->type]); -} -static DEVICE_ATTR_RO(plug_type); - -static struct attribute *typec_cable_attrs[] = { - &dev_attr_type.attr, - &dev_attr_plug_type.attr, - NULL -}; -ATTRIBUTE_GROUPS(typec_cable); - -static void typec_cable_release(struct device *dev) -{ - struct typec_cable *cable = to_typec_cable(dev); - - kfree(cable); -} - -static const struct device_type typec_cable_dev_type = { - .name = "typec_cable", - .groups = typec_cable_groups, - .release = typec_cable_release, -}; - -/** - * typec_cable_set_identity - Report result from Discover Identity command - * @cable: The cable updated identity values - * - * This routine is used to report that the result of Discover Identity USB power - * delivery command has become available. - */ -int typec_cable_set_identity(struct typec_cable *cable) -{ - if (!cable->identity) - return -EINVAL; - - typec_report_identity(&cable->dev); - return 0; -} -EXPORT_SYMBOL_GPL(typec_cable_set_identity); - -/** - * typec_register_cable - Register a USB Type-C Cable - * @port: The USB Type-C Port the cable is connected to - * @desc: Description of the cable - * - * Registers a device for USB Type-C Cable described in @desc. The cable will be - * parent for the optional cable plug devises. - * - * Returns handle to the cable on success or ERR_PTR on failure. - */ -struct typec_cable *typec_register_cable(struct typec_port *port, - struct typec_cable_desc *desc) -{ - struct typec_cable *cable; - int ret; - - cable = kzalloc(sizeof(*cable), GFP_KERNEL); - if (!cable) - return ERR_PTR(-ENOMEM); - - cable->type = desc->type; - cable->active = desc->active; - - if (desc->identity) { - /* - * Creating directory for the identity only if the driver is - * able to provide data to it. - */ - cable->dev.groups = usb_pd_id_groups; - cable->identity = desc->identity; - } - - cable->dev.class = typec_class; - cable->dev.parent = &port->dev; - cable->dev.type = &typec_cable_dev_type; - dev_set_name(&cable->dev, "%s-cable", dev_name(&port->dev)); - - ret = device_register(&cable->dev); - if (ret) { - dev_err(&port->dev, "failed to register cable (%d)\n", ret); - put_device(&cable->dev); - return ERR_PTR(ret); - } - - return cable; -} -EXPORT_SYMBOL_GPL(typec_register_cable); - -/** - * typec_unregister_cable - Unregister a USB Type-C Cable - * @cable: The cable to be unregistered - * - * Unregister device created with typec_register_cable(). - */ -void typec_unregister_cable(struct typec_cable *cable) -{ - if (!IS_ERR_OR_NULL(cable)) - device_unregister(&cable->dev); -} -EXPORT_SYMBOL_GPL(typec_unregister_cable); - -/* ------------------------------------------------------------------------- */ -/* USB Type-C ports */ - -static const char * const typec_roles[] = { - [TYPEC_SINK] = "sink", - [TYPEC_SOURCE] = "source", -}; - -static const char * const typec_data_roles[] = { - [TYPEC_DEVICE] = "device", - [TYPEC_HOST] = "host", -}; - -static const char * const typec_port_types[] = { - [TYPEC_PORT_DFP] = "source", - [TYPEC_PORT_UFP] = "sink", - [TYPEC_PORT_DRP] = "dual", -}; - -static const char * const typec_port_types_drp[] = { - [TYPEC_PORT_DFP] = "dual [source] sink", - [TYPEC_PORT_UFP] = "dual source [sink]", - [TYPEC_PORT_DRP] = "[dual] source sink", -}; - -static ssize_t -preferred_role_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_port *port = to_typec_port(dev); - int role; - int ret; - - if (port->cap->type != TYPEC_PORT_DRP) { - dev_dbg(dev, "Preferred role only supported with DRP ports\n"); - return -EOPNOTSUPP; - } - - if (!port->cap->try_role) { - dev_dbg(dev, "Setting preferred role not supported\n"); - return -EOPNOTSUPP; - } - - role = sysfs_match_string(typec_roles, buf); - if (role < 0) { - if (sysfs_streq(buf, "none")) - role = TYPEC_NO_PREFERRED_ROLE; - else - return -EINVAL; - } - - ret = port->cap->try_role(port->cap, role); - if (ret) - return ret; - - port->prefer_role = role; - return size; -} - -static ssize_t -preferred_role_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - if (port->cap->type != TYPEC_PORT_DRP) - return 0; - - if (port->prefer_role < 0) - return 0; - - return sprintf(buf, "%s\n", typec_roles[port->prefer_role]); -} -static DEVICE_ATTR_RW(preferred_role); - -static ssize_t data_role_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_port *port = to_typec_port(dev); - int ret; - - if (!port->cap->dr_set) { - dev_dbg(dev, "data role swapping not supported\n"); - return -EOPNOTSUPP; - } - - ret = sysfs_match_string(typec_data_roles, buf); - if (ret < 0) - return ret; - - mutex_lock(&port->port_type_lock); - if (port->port_type != TYPEC_PORT_DRP) { - dev_dbg(dev, "port type fixed at \"%s\"", - typec_port_types[port->port_type]); - ret = -EOPNOTSUPP; - goto unlock_and_ret; - } - - ret = port->cap->dr_set(port->cap, ret); - if (ret) - goto unlock_and_ret; - - ret = size; -unlock_and_ret: - mutex_unlock(&port->port_type_lock); - return ret; -} - -static ssize_t data_role_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - if (port->cap->type == TYPEC_PORT_DRP) - return sprintf(buf, "%s\n", port->data_role == TYPEC_HOST ? - "[host] device" : "host [device]"); - - return sprintf(buf, "[%s]\n", typec_data_roles[port->data_role]); -} -static DEVICE_ATTR_RW(data_role); - -static ssize_t power_role_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_port *port = to_typec_port(dev); - int ret; - - if (!port->cap->pd_revision) { - dev_dbg(dev, "USB Power Delivery not supported\n"); - return -EOPNOTSUPP; - } - - if (!port->cap->pr_set) { - dev_dbg(dev, "power role swapping not supported\n"); - return -EOPNOTSUPP; - } - - if (port->pwr_opmode != TYPEC_PWR_MODE_PD) { - dev_dbg(dev, "partner unable to swap power role\n"); - return -EIO; - } - - ret = sysfs_match_string(typec_roles, buf); - if (ret < 0) - return ret; - - mutex_lock(&port->port_type_lock); - if (port->port_type != TYPEC_PORT_DRP) { - dev_dbg(dev, "port type fixed at \"%s\"", - typec_port_types[port->port_type]); - ret = -EOPNOTSUPP; - goto unlock_and_ret; - } - - ret = port->cap->pr_set(port->cap, ret); - if (ret) - goto unlock_and_ret; - - ret = size; -unlock_and_ret: - mutex_unlock(&port->port_type_lock); - return ret; -} - -static ssize_t power_role_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - if (port->cap->type == TYPEC_PORT_DRP) - return sprintf(buf, "%s\n", port->pwr_role == TYPEC_SOURCE ? - "[source] sink" : "source [sink]"); - - return sprintf(buf, "[%s]\n", typec_roles[port->pwr_role]); -} -static DEVICE_ATTR_RW(power_role); - -static ssize_t -port_type_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_port *port = to_typec_port(dev); - int ret; - enum typec_port_type type; - - if (!port->cap->port_type_set || port->cap->type != TYPEC_PORT_DRP) { - dev_dbg(dev, "changing port type not supported\n"); - return -EOPNOTSUPP; - } - - ret = sysfs_match_string(typec_port_types, buf); - if (ret < 0) - return ret; - - type = ret; - mutex_lock(&port->port_type_lock); - - if (port->port_type == type) { - ret = size; - goto unlock_and_ret; - } - - ret = port->cap->port_type_set(port->cap, type); - if (ret) - goto unlock_and_ret; - - port->port_type = type; - ret = size; - -unlock_and_ret: - mutex_unlock(&port->port_type_lock); - return ret; -} - -static ssize_t -port_type_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - if (port->cap->type == TYPEC_PORT_DRP) - return sprintf(buf, "%s\n", - typec_port_types_drp[port->port_type]); - - return sprintf(buf, "[%s]\n", typec_port_types[port->cap->type]); -} -static DEVICE_ATTR_RW(port_type); - -static const char * const typec_pwr_opmodes[] = { - [TYPEC_PWR_MODE_USB] = "default", - [TYPEC_PWR_MODE_1_5A] = "1.5A", - [TYPEC_PWR_MODE_3_0A] = "3.0A", - [TYPEC_PWR_MODE_PD] = "usb_power_delivery", -}; - -static ssize_t power_operation_mode_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - return sprintf(buf, "%s\n", typec_pwr_opmodes[port->pwr_opmode]); -} -static DEVICE_ATTR_RO(power_operation_mode); - -static ssize_t vconn_source_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) -{ - struct typec_port *port = to_typec_port(dev); - bool source; - int ret; - - if (!port->cap->pd_revision) { - dev_dbg(dev, "VCONN swap depends on USB Power Delivery\n"); - return -EOPNOTSUPP; - } - - if (!port->cap->vconn_set) { - dev_dbg(dev, "VCONN swapping not supported\n"); - return -EOPNOTSUPP; - } - - ret = kstrtobool(buf, &source); - if (ret) - return ret; - - ret = port->cap->vconn_set(port->cap, (enum typec_role)source); - if (ret) - return ret; - - return size; -} - -static ssize_t vconn_source_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct typec_port *port = to_typec_port(dev); - - return sprintf(buf, "%s\n", - port->vconn_role == TYPEC_SOURCE ? "yes" : "no"); -} -static DEVICE_ATTR_RW(vconn_source); - -static ssize_t supported_accessory_modes_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_port *port = to_typec_port(dev); - ssize_t ret = 0; - int i; - - for (i = 0; i < ARRAY_SIZE(port->cap->accessory); i++) { - if (port->cap->accessory[i]) - ret += sprintf(buf + ret, "%s ", - typec_accessory_modes[port->cap->accessory[i]]); - } - - if (!ret) - return sprintf(buf, "none\n"); - - buf[ret - 1] = '\n'; - - return ret; -} -static DEVICE_ATTR_RO(supported_accessory_modes); - -static ssize_t usb_typec_revision_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_port *port = to_typec_port(dev); - u16 rev = port->cap->revision; - - return sprintf(buf, "%d.%d\n", (rev >> 8) & 0xff, (rev >> 4) & 0xf); -} -static DEVICE_ATTR_RO(usb_typec_revision); - -static ssize_t usb_power_delivery_revision_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct typec_port *p = to_typec_port(dev); - - return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff); -} -static DEVICE_ATTR_RO(usb_power_delivery_revision); - -static struct attribute *typec_attrs[] = { - &dev_attr_data_role.attr, - &dev_attr_power_operation_mode.attr, - &dev_attr_power_role.attr, - &dev_attr_preferred_role.attr, - &dev_attr_supported_accessory_modes.attr, - &dev_attr_usb_power_delivery_revision.attr, - &dev_attr_usb_typec_revision.attr, - &dev_attr_vconn_source.attr, - &dev_attr_port_type.attr, - NULL, -}; -ATTRIBUTE_GROUPS(typec); - -static int typec_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - int ret; - - ret = add_uevent_var(env, "TYPEC_PORT=%s", dev_name(dev)); - if (ret) - dev_err(dev, "failed to add uevent TYPEC_PORT\n"); - - return ret; -} - -static void typec_release(struct device *dev) -{ - struct typec_port *port = to_typec_port(dev); - - ida_simple_remove(&typec_index_ida, port->id); - kfree(port); -} - -static const struct device_type typec_port_dev_type = { - .name = "typec_port", - .groups = typec_groups, - .uevent = typec_uevent, - .release = typec_release, -}; - -/* --------------------------------------- */ -/* Driver callbacks to report role updates */ - -/** - * typec_set_data_role - Report data role change - * @port: The USB Type-C Port where the role was changed - * @role: The new data role - * - * This routine is used by the port drivers to report data role changes. - */ -void typec_set_data_role(struct typec_port *port, enum typec_data_role role) -{ - if (port->data_role == role) - return; - - port->data_role = role; - sysfs_notify(&port->dev.kobj, NULL, "data_role"); - kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); -} -EXPORT_SYMBOL_GPL(typec_set_data_role); - -/** - * typec_set_pwr_role - Report power role change - * @port: The USB Type-C Port where the role was changed - * @role: The new data role - * - * This routine is used by the port drivers to report power role changes. - */ -void typec_set_pwr_role(struct typec_port *port, enum typec_role role) -{ - if (port->pwr_role == role) - return; - - port->pwr_role = role; - sysfs_notify(&port->dev.kobj, NULL, "power_role"); - kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); -} -EXPORT_SYMBOL_GPL(typec_set_pwr_role); - -/** - * typec_set_pwr_role - Report VCONN source change - * @port: The USB Type-C Port which VCONN role changed - * @role: Source when @port is sourcing VCONN, or Sink when it's not - * - * This routine is used by the port drivers to report if the VCONN source is - * changes. - */ -void typec_set_vconn_role(struct typec_port *port, enum typec_role role) -{ - if (port->vconn_role == role) - return; - - port->vconn_role = role; - sysfs_notify(&port->dev.kobj, NULL, "vconn_source"); - kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); -} -EXPORT_SYMBOL_GPL(typec_set_vconn_role); - -static int partner_match(struct device *dev, void *data) -{ - return is_typec_partner(dev); -} - -/** - * typec_set_pwr_opmode - Report changed power operation mode - * @port: The USB Type-C Port where the mode was changed - * @opmode: New power operation mode - * - * This routine is used by the port drivers to report changed power operation - * mode in @port. The modes are USB (default), 1.5A, 3.0A as defined in USB - * Type-C specification, and "USB Power Delivery" when the power levels are - * negotiated with methods defined in USB Power Delivery specification. - */ -void typec_set_pwr_opmode(struct typec_port *port, - enum typec_pwr_opmode opmode) -{ - struct device *partner_dev; - - if (port->pwr_opmode == opmode) - return; - - port->pwr_opmode = opmode; - sysfs_notify(&port->dev.kobj, NULL, "power_operation_mode"); - kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); - - partner_dev = device_find_child(&port->dev, NULL, partner_match); - if (partner_dev) { - struct typec_partner *partner = to_typec_partner(partner_dev); - - if (opmode == TYPEC_PWR_MODE_PD && !partner->usb_pd) { - partner->usb_pd = 1; - sysfs_notify(&partner_dev->kobj, NULL, - "supports_usb_power_delivery"); - } - put_device(partner_dev); - } -} -EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); - -/* --------------------------------------- */ - -/** - * typec_port_register_altmode - Register USB Type-C Port Alternate Mode - * @port: USB Type-C Port that supports the alternate mode - * @desc: Description of the alternate mode - * - * This routine is used to register an alternate mode that @port is capable of - * supporting. - * - * Returns handle to the alternate mode on success or ERR_PTR on failure. - */ -struct typec_altmode * -typec_port_register_altmode(struct typec_port *port, - const struct typec_altmode_desc *desc) -{ - return typec_register_altmode(&port->dev, desc); -} -EXPORT_SYMBOL_GPL(typec_port_register_altmode); - -/** - * typec_register_port - Register a USB Type-C Port - * @parent: Parent device - * @cap: Description of the port - * - * Registers a device for USB Type-C Port described in @cap. - * - * Returns handle to the port on success or ERR_PTR on failure. - */ -struct typec_port *typec_register_port(struct device *parent, - const struct typec_capability *cap) -{ - struct typec_port *port; - int role; - int ret; - int id; - - port = kzalloc(sizeof(*port), GFP_KERNEL); - if (!port) - return ERR_PTR(-ENOMEM); - - id = ida_simple_get(&typec_index_ida, 0, 0, GFP_KERNEL); - if (id < 0) { - kfree(port); - return ERR_PTR(id); - } - - if (cap->type == TYPEC_PORT_DFP) - role = TYPEC_SOURCE; - else if (cap->type == TYPEC_PORT_UFP) - role = TYPEC_SINK; - else - role = cap->prefer_role; - - if (role == TYPEC_SOURCE) { - port->data_role = TYPEC_HOST; - port->pwr_role = TYPEC_SOURCE; - port->vconn_role = TYPEC_SOURCE; - } else { - port->data_role = TYPEC_DEVICE; - port->pwr_role = TYPEC_SINK; - port->vconn_role = TYPEC_SINK; - } - - port->id = id; - port->cap = cap; - port->port_type = cap->type; - mutex_init(&port->port_type_lock); - port->prefer_role = cap->prefer_role; - - port->dev.class = typec_class; - port->dev.parent = parent; - port->dev.fwnode = cap->fwnode; - port->dev.type = &typec_port_dev_type; - dev_set_name(&port->dev, "port%d", id); - - ret = device_register(&port->dev); - if (ret) { - dev_err(parent, "failed to register port (%d)\n", ret); - put_device(&port->dev); - return ERR_PTR(ret); - } - - return port; -} -EXPORT_SYMBOL_GPL(typec_register_port); - -/** - * typec_unregister_port - Unregister a USB Type-C Port - * @port: The port to be unregistered - * - * Unregister device created with typec_register_port(). - */ -void typec_unregister_port(struct typec_port *port) -{ - if (!IS_ERR_OR_NULL(port)) - device_unregister(&port->dev); -} -EXPORT_SYMBOL_GPL(typec_unregister_port); - -static int __init typec_init(void) -{ - typec_class = class_create(THIS_MODULE, "typec"); - return PTR_ERR_OR_ZERO(typec_class); -} -subsys_initcall(typec_init); - -static void __exit typec_exit(void) -{ - class_destroy(typec_class); - ida_destroy(&typec_index_ida); -} -module_exit(typec_exit); - -MODULE_AUTHOR("Heikki Krogerus "); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("USB Type-C Connector Class"); diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index 0d44ce6af08f..2408e5c2ed91 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -60,6 +60,12 @@ enum typec_accessory { #define TYPEC_MAX_ACCESSORY 3 +enum typec_orientation { + TYPEC_ORIENTATION_NONE, + TYPEC_ORIENTATION_NORMAL, + TYPEC_ORIENTATION_REVERSE, +}; + /* * struct usb_pd_identity - USB Power Delivery identity data * @id_header: ID Header VDO @@ -185,6 +191,8 @@ struct typec_partner_desc { * @pd_revision: USB Power Delivery Specification revision if supported * @prefer_role: Initial role preference * @accessory: Supported Accessory Modes + * @sw: Cable plug orientation switch + * @mux: Multiplexer switch for Alternate/Accessory Modes * @fwnode: Optional fwnode of the port * @try_role: Set data role preference for DRP port * @dr_set: Set Data Role @@ -202,6 +210,8 @@ struct typec_capability { int prefer_role; enum typec_accessory accessory[TYPEC_MAX_ACCESSORY]; + struct typec_switch *sw; + struct typec_mux *mux; struct fwnode_handle *fwnode; int (*try_role)(const struct typec_capability *, @@ -245,4 +255,8 @@ void typec_set_pwr_role(struct typec_port *port, enum typec_role role); void typec_set_vconn_role(struct typec_port *port, enum typec_role role); void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode); +int typec_set_orientation(struct typec_port *port, + enum typec_orientation orientation); +int typec_set_mode(struct typec_port *port, int mode); + #endif /* __LINUX_USB_TYPEC_H */ diff --git a/include/linux/usb/typec_mux.h b/include/linux/usb/typec_mux.h new file mode 100644 index 000000000000..12c1b057834b --- /dev/null +++ b/include/linux/usb/typec_mux.h @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 + +#ifndef __USB_TYPEC_MUX +#define __USB_TYPEC_MUX + +#include +#include + +struct device; + +/** + * struct typec_switch - USB Type-C cable orientation switch + * @dev: Switch device + * @entry: List entry + * @set: Callback to the driver for setting the orientation + * + * USB Type-C pin flipper switch routing the correct data pairs from the + * connector to the USB controller depending on the orientation of the cable + * plug. + */ +struct typec_switch { + struct device *dev; + struct list_head entry; + + int (*set)(struct typec_switch *sw, enum typec_orientation orientation); +}; + +/** + * struct typec_switch - USB Type-C connector pin mux + * @dev: Mux device + * @entry: List entry + * @set: Callback to the driver for setting the state of the mux + * + * Pin Multiplexer/DeMultiplexer switch routing the USB Type-C connector pins to + * different components depending on the requested mode of operation. Used with + * Accessory/Alternate modes. + */ +struct typec_mux { + struct device *dev; + struct list_head entry; + + int (*set)(struct typec_mux *mux, int state); +}; + +struct typec_switch *typec_switch_get(struct device *dev); +void typec_switch_put(struct typec_switch *sw); +int typec_switch_register(struct typec_switch *sw); +void typec_switch_unregister(struct typec_switch *sw); + +struct typec_mux *typec_mux_get(struct device *dev); +void typec_mux_put(struct typec_mux *mux); +int typec_mux_register(struct typec_mux *mux); +void typec_mux_unregister(struct typec_mux *mux); + +#endif /* __USB_TYPEC_MUX */ -- cgit v1.2.1 From fde0aa6c175a4d8aa19e82b86ae0f9278bc8563b Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 20 Mar 2018 15:57:04 +0300 Subject: usb: common: Small class for USB role switches USB role switch is a device that can be used to choose the data role for USB connector. With dual-role capable USB controllers, the controller itself will be the switch, but on some platforms the USB host and device controllers are separate IPs and there is a mux between them and the connector. On those platforms the mux driver will need to register the switch. With USB Type-C connectors, the host-to-device relationship is negotiated over the Configuration Channel (CC). That means the USB Type-C drivers need to be in control of the role switch. The class provides a simple API for the USB Type-C drivers for the control. For other types of USB connectors (mainly microAB) the class provides user space control via sysfs attribute file that can be used to request role swapping from the switch. Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-class-usb_role | 21 ++ drivers/usb/Kconfig | 3 + drivers/usb/common/Makefile | 1 + drivers/usb/common/roles.c | 305 +++++++++++++++++++++++++ include/linux/usb/role.h | 53 +++++ 5 files changed, 383 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-usb_role create mode 100644 drivers/usb/common/roles.c create mode 100644 include/linux/usb/role.h diff --git a/Documentation/ABI/testing/sysfs-class-usb_role b/Documentation/ABI/testing/sysfs-class-usb_role new file mode 100644 index 000000000000..3b810a425a52 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-usb_role @@ -0,0 +1,21 @@ +What: /sys/class/usb_role/ +Date: Jan 2018 +Contact: Heikki Krogerus +Description: + Place in sysfs for USB Role Switches. USB Role Switch is a + device that can select the data role (host or device) for USB + port. + +What: /sys/class/usb_role//role +Date: Jan 2018 +Contact: Heikki Krogerus +Description: + The current role of the switch. This attribute can be used for + requesting role swapping with non-USB Type-C ports. With USB + Type-C ports, the ABI defined for USB Type-C connector class + must be used. + + Valid values: + - none + - host + - device diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 148f3ee70286..f278958e04ca 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -203,4 +203,7 @@ config USB_ULPI_BUS To compile this driver as a module, choose M here: the module will be called ulpi. +config USB_ROLE_SWITCH + tristate + endif # USB_SUPPORT diff --git a/drivers/usb/common/Makefile b/drivers/usb/common/Makefile index 0a7c45e85481..fb4d5ef4165c 100644 --- a/drivers/usb/common/Makefile +++ b/drivers/usb/common/Makefile @@ -9,3 +9,4 @@ usb-common-$(CONFIG_USB_LED_TRIG) += led.o obj-$(CONFIG_USB_OTG_FSM) += usb-otg-fsm.o obj-$(CONFIG_USB_ULPI_BUS) += ulpi.o +obj-$(CONFIG_USB_ROLE_SWITCH) += roles.o diff --git a/drivers/usb/common/roles.c b/drivers/usb/common/roles.c new file mode 100644 index 000000000000..15cc76e22123 --- /dev/null +++ b/drivers/usb/common/roles.c @@ -0,0 +1,305 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * USB Role Switch Support + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus + * Hans de Goede + */ + +#include +#include +#include +#include +#include + +static struct class *role_class; + +struct usb_role_switch { + struct device dev; + struct mutex lock; /* device lock*/ + enum usb_role role; + + /* From descriptor */ + struct device *usb2_port; + struct device *usb3_port; + struct device *udc; + usb_role_switch_set_t set; + usb_role_switch_get_t get; + bool allow_userspace_control; +}; + +#define to_role_switch(d) container_of(d, struct usb_role_switch, dev) + +/** + * usb_role_switch_set_role - Set USB role for a switch + * @sw: USB role switch + * @role: USB role to be switched to + * + * Set USB role @role for @sw. + */ +int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role) +{ + int ret; + + if (IS_ERR_OR_NULL(sw)) + return 0; + + mutex_lock(&sw->lock); + + ret = sw->set(sw->dev.parent, role); + if (!ret) + sw->role = role; + + mutex_unlock(&sw->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(usb_role_switch_set_role); + +/** + * usb_role_switch_get_role - Get the USB role for a switch + * @sw: USB role switch + * + * Depending on the role-switch-driver this function returns either a cached + * value of the last set role, or reads back the actual value from the hardware. + */ +enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw) +{ + enum usb_role role; + + if (IS_ERR_OR_NULL(sw)) + return USB_ROLE_NONE; + + mutex_lock(&sw->lock); + + if (sw->get) + role = sw->get(sw->dev.parent); + else + role = sw->role; + + mutex_unlock(&sw->lock); + + return role; +} +EXPORT_SYMBOL_GPL(usb_role_switch_get_role); + +static int __switch_match(struct device *dev, const void *name) +{ + return !strcmp((const char *)name, dev_name(dev)); +} + +static void *usb_role_switch_match(struct device_connection *con, int ep, + void *data) +{ + struct device *dev; + + dev = class_find_device(role_class, NULL, con->endpoint[ep], + __switch_match); + + return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER); +} + +/** + * usb_role_switch_get - Find USB role switch linked with the caller + * @dev: The caller device + * + * Finds and returns role switch linked with @dev. The reference count for the + * found switch is incremented. + */ +struct usb_role_switch *usb_role_switch_get(struct device *dev) +{ + return device_connection_find_match(dev, "usb-role-switch", NULL, + usb_role_switch_match); +} +EXPORT_SYMBOL_GPL(usb_role_switch_get); + +/** + * usb_role_switch_put - Release handle to a switch + * @sw: USB Role Switch + * + * Decrement reference count for @sw. + */ +void usb_role_switch_put(struct usb_role_switch *sw) +{ + if (!IS_ERR_OR_NULL(sw)) + put_device(&sw->dev); +} +EXPORT_SYMBOL_GPL(usb_role_switch_put); + +static umode_t +usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n) +{ + struct device *dev = container_of(kobj, typeof(*dev), kobj); + struct usb_role_switch *sw = to_role_switch(dev); + + if (sw->allow_userspace_control) + return attr->mode; + + return 0; +} + +static const char * const usb_roles[] = { + [USB_ROLE_NONE] = "none", + [USB_ROLE_HOST] = "host", + [USB_ROLE_DEVICE] = "device", +}; + +static ssize_t +role_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_role_switch *sw = to_role_switch(dev); + enum usb_role role = usb_role_switch_get_role(sw); + + return sprintf(buf, "%s\n", usb_roles[role]); +} + +static ssize_t role_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct usb_role_switch *sw = to_role_switch(dev); + int ret; + + ret = sysfs_match_string(usb_roles, buf); + if (ret < 0) { + bool res; + + /* Extra check if the user wants to disable the switch */ + ret = kstrtobool(buf, &res); + if (ret || res) + return -EINVAL; + } + + ret = usb_role_switch_set_role(sw, ret); + if (ret) + return ret; + + return size; +} +static DEVICE_ATTR_RW(role); + +static struct attribute *usb_role_switch_attrs[] = { + &dev_attr_role.attr, + NULL, +}; + +static const struct attribute_group usb_role_switch_group = { + .is_visible = usb_role_switch_is_visible, + .attrs = usb_role_switch_attrs, +}; + +static const struct attribute_group *usb_role_switch_groups[] = { + &usb_role_switch_group, + NULL, +}; + +static int +usb_role_switch_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + int ret; + + ret = add_uevent_var(env, "USB_ROLE_SWITCH=%s", dev_name(dev)); + if (ret) + dev_err(dev, "failed to add uevent USB_ROLE_SWITCH\n"); + + return ret; +} + +static void usb_role_switch_release(struct device *dev) +{ + struct usb_role_switch *sw = to_role_switch(dev); + + kfree(sw); +} + +static const struct device_type usb_role_dev_type = { + .name = "usb_role_switch", + .groups = usb_role_switch_groups, + .uevent = usb_role_switch_uevent, + .release = usb_role_switch_release, +}; + +/** + * usb_role_switch_register - Register USB Role Switch + * @parent: Parent device for the switch + * @desc: Description of the switch + * + * USB Role Switch is a device capable or choosing the role for USB connector. + * On platforms where the USB controller is dual-role capable, the controller + * driver will need to register the switch. On platforms where the USB host and + * USB device controllers behind the connector are separate, there will be a + * mux, and the driver for that mux will need to register the switch. + * + * Returns handle to a new role switch or ERR_PTR. The content of @desc is + * copied. + */ +struct usb_role_switch * +usb_role_switch_register(struct device *parent, + const struct usb_role_switch_desc *desc) +{ + struct usb_role_switch *sw; + int ret; + + if (!desc || !desc->set) + return ERR_PTR(-EINVAL); + + sw = kzalloc(sizeof(*sw), GFP_KERNEL); + if (!sw) + return ERR_PTR(-ENOMEM); + + mutex_init(&sw->lock); + + sw->allow_userspace_control = desc->allow_userspace_control; + sw->usb2_port = desc->usb2_port; + sw->usb3_port = desc->usb3_port; + sw->udc = desc->udc; + sw->set = desc->set; + sw->get = desc->get; + + sw->dev.parent = parent; + sw->dev.class = role_class; + sw->dev.type = &usb_role_dev_type; + dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent)); + + ret = device_register(&sw->dev); + if (ret) { + put_device(&sw->dev); + return ERR_PTR(ret); + } + + /* TODO: Symlinks for the host port and the device controller. */ + + return sw; +} +EXPORT_SYMBOL_GPL(usb_role_switch_register); + +/** + * usb_role_switch_unregister - Unregsiter USB Role Switch + * @sw: USB Role Switch + * + * Unregister switch that was registered with usb_role_switch_register(). + */ +void usb_role_switch_unregister(struct usb_role_switch *sw) +{ + if (!IS_ERR_OR_NULL(sw)) + device_unregister(&sw->dev); +} +EXPORT_SYMBOL_GPL(usb_role_switch_unregister); + +static int __init usb_roles_init(void) +{ + role_class = class_create(THIS_MODULE, "usb_role"); + return PTR_ERR_OR_ZERO(role_class); +} +subsys_initcall(usb_roles_init); + +static void __exit usb_roles_exit(void) +{ + class_destroy(role_class); +} +module_exit(usb_roles_exit); + +MODULE_AUTHOR("Heikki Krogerus "); +MODULE_AUTHOR("Hans de Goede "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("USB Role Class"); diff --git a/include/linux/usb/role.h b/include/linux/usb/role.h new file mode 100644 index 000000000000..edc51be4a77c --- /dev/null +++ b/include/linux/usb/role.h @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0 + +#ifndef __LINUX_USB_ROLE_H +#define __LINUX_USB_ROLE_H + +#include + +struct usb_role_switch; + +enum usb_role { + USB_ROLE_NONE, + USB_ROLE_HOST, + USB_ROLE_DEVICE, +}; + +typedef int (*usb_role_switch_set_t)(struct device *dev, enum usb_role role); +typedef enum usb_role (*usb_role_switch_get_t)(struct device *dev); + +/** + * struct usb_role_switch_desc - USB Role Switch Descriptor + * @usb2_port: Optional reference to the host controller port device (USB2) + * @usb3_port: Optional reference to the host controller port device (USB3) + * @udc: Optional reference to the peripheral controller device + * @set: Callback for setting the role + * @get: Callback for getting the role (optional) + * @allow_userspace_control: If true userspace may change the role through sysfs + * + * @usb2_port and @usb3_port will point to the USB host port and @udc to the USB + * device controller behind the USB connector with the role switch. If + * @usb2_port, @usb3_port and @udc are included in the description, the + * reference count for them should be incremented by the caller of + * usb_role_switch_register() before registering the switch. + */ +struct usb_role_switch_desc { + struct device *usb2_port; + struct device *usb3_port; + struct device *udc; + usb_role_switch_set_t set; + usb_role_switch_get_t get; + bool allow_userspace_control; +}; + +int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role); +enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw); +struct usb_role_switch *usb_role_switch_get(struct device *dev); +void usb_role_switch_put(struct usb_role_switch *sw); + +struct usb_role_switch * +usb_role_switch_register(struct device *parent, + const struct usb_role_switch_desc *desc); +void usb_role_switch_unregister(struct usb_role_switch *sw); + +#endif /* __LINUX_USB_ROLE_H */ -- cgit v1.2.1 From ceeb162500c3480b660a47d509db7955a7913271 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 20 Mar 2018 15:57:05 +0300 Subject: usb: typec: Separate the definitions for data and power roles USB Type-C specification v1.2 separated the power and data roles more clearly. Dual-Role-Data term was introduced, and the meaning of DRP was changed from "Dual-Role-Port" to "Dual-Role-Power". In order to allow the port drivers to describe the capabilities of the ports more clearly according to the newest specifications, introducing separate definitions for the data roles. Reviewed-by: Guenter Roeck Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/class.c | 56 ++++++++++++++++++++++--------------- drivers/usb/typec/fusb302/fusb302.c | 1 + drivers/usb/typec/tcpm.c | 9 +++--- drivers/usb/typec/tps6598x.c | 26 +++++++++++------ drivers/usb/typec/typec_wcove.c | 1 + drivers/usb/typec/ucsi/ucsi.c | 13 +++++++-- include/linux/usb/tcpm.h | 1 + include/linux/usb/typec.h | 14 ++++++++-- 8 files changed, 80 insertions(+), 41 deletions(-) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 2620a694704f..53df10df2f9d 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -282,10 +282,10 @@ typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, ssize_t ret; switch (mode->roles) { - case TYPEC_PORT_DFP: + case TYPEC_PORT_SRC: ret = sprintf(buf, "source\n"); break; - case TYPEC_PORT_UFP: + case TYPEC_PORT_SNK: ret = sprintf(buf, "sink\n"); break; case TYPEC_PORT_DRP: @@ -797,14 +797,14 @@ static const char * const typec_data_roles[] = { }; static const char * const typec_port_types[] = { - [TYPEC_PORT_DFP] = "source", - [TYPEC_PORT_UFP] = "sink", + [TYPEC_PORT_SRC] = "source", + [TYPEC_PORT_SNK] = "sink", [TYPEC_PORT_DRP] = "dual", }; static const char * const typec_port_types_drp[] = { - [TYPEC_PORT_DFP] = "dual [source] sink", - [TYPEC_PORT_UFP] = "dual source [sink]", + [TYPEC_PORT_SRC] = "dual [source] sink", + [TYPEC_PORT_SNK] = "dual source [sink]", [TYPEC_PORT_DRP] = "[dual] source sink", }; @@ -875,9 +875,7 @@ static ssize_t data_role_store(struct device *dev, return ret; mutex_lock(&port->port_type_lock); - if (port->port_type != TYPEC_PORT_DRP) { - dev_dbg(dev, "port type fixed at \"%s\"", - typec_port_types[port->port_type]); + if (port->cap->data != TYPEC_PORT_DRD) { ret = -EOPNOTSUPP; goto unlock_and_ret; } @@ -897,7 +895,7 @@ static ssize_t data_role_show(struct device *dev, { struct typec_port *port = to_typec_port(dev); - if (port->cap->type == TYPEC_PORT_DRP) + if (port->cap->data == TYPEC_PORT_DRD) return sprintf(buf, "%s\n", port->data_role == TYPEC_HOST ? "[host] device" : "host [device]"); @@ -1328,7 +1326,6 @@ struct typec_port *typec_register_port(struct device *parent, const struct typec_capability *cap) { struct typec_port *port; - int role; int ret; int id; @@ -1354,21 +1351,36 @@ struct typec_port *typec_register_port(struct device *parent, goto err_mux; } - if (cap->type == TYPEC_PORT_DFP) - role = TYPEC_SOURCE; - else if (cap->type == TYPEC_PORT_UFP) - role = TYPEC_SINK; - else - role = cap->prefer_role; - - if (role == TYPEC_SOURCE) { - port->data_role = TYPEC_HOST; + switch (cap->type) { + case TYPEC_PORT_SRC: port->pwr_role = TYPEC_SOURCE; port->vconn_role = TYPEC_SOURCE; - } else { - port->data_role = TYPEC_DEVICE; + break; + case TYPEC_PORT_SNK: port->pwr_role = TYPEC_SINK; port->vconn_role = TYPEC_SINK; + break; + case TYPEC_PORT_DRP: + if (cap->prefer_role != TYPEC_NO_PREFERRED_ROLE) + port->pwr_role = cap->prefer_role; + else + port->pwr_role = TYPEC_SINK; + break; + } + + switch (cap->data) { + case TYPEC_PORT_DFP: + port->data_role = TYPEC_HOST; + break; + case TYPEC_PORT_UFP: + port->data_role = TYPEC_DEVICE; + break; + case TYPEC_PORT_DRD: + if (cap->prefer_role == TYPEC_SOURCE) + port->data_role = TYPEC_HOST; + else + port->data_role = TYPEC_DEVICE; + break; } port->id = id; diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c index 06794c06330f..82bf7c0ed53c 100644 --- a/drivers/usb/typec/fusb302/fusb302.c +++ b/drivers/usb/typec/fusb302/fusb302.c @@ -1219,6 +1219,7 @@ static const struct tcpc_config fusb302_tcpc_config = { .max_snk_mw = 15000, .operating_snk_mw = 2500, .type = TYPEC_PORT_DRP, + .data = TYPEC_PORT_DRD, .default_role = TYPEC_SINK, .alt_modes = NULL, }; diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index 4c0fc5493d58..62e710bb6367 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -345,7 +345,7 @@ static enum tcpm_state tcpm_default_state(struct tcpm_port *port) else if (port->tcpc->config->default_role == TYPEC_SINK) return SNK_UNATTACHED; /* Fall through to return SRC_UNATTACHED */ - } else if (port->port_type == TYPEC_PORT_UFP) { + } else if (port->port_type == TYPEC_PORT_SNK) { return SNK_UNATTACHED; } return SRC_UNATTACHED; @@ -2179,7 +2179,7 @@ static inline enum tcpm_state unattached_state(struct tcpm_port *port) return SRC_UNATTACHED; else return SNK_UNATTACHED; - } else if (port->port_type == TYPEC_PORT_DFP) { + } else if (port->port_type == TYPEC_PORT_SRC) { return SRC_UNATTACHED; } @@ -3469,11 +3469,11 @@ static int tcpm_port_type_set(const struct typec_capability *cap, if (!port->connected) { tcpm_set_state(port, PORT_RESET, 0); - } else if (type == TYPEC_PORT_UFP) { + } else if (type == TYPEC_PORT_SNK) { if (!(port->pwr_role == TYPEC_SINK && port->data_role == TYPEC_DEVICE)) tcpm_set_state(port, PORT_RESET, 0); - } else if (type == TYPEC_PORT_DFP) { + } else if (type == TYPEC_PORT_SRC) { if (!(port->pwr_role == TYPEC_SOURCE && port->data_role == TYPEC_HOST)) tcpm_set_state(port, PORT_RESET, 0); @@ -3641,6 +3641,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->typec_caps.prefer_role = tcpc->config->default_role; port->typec_caps.type = tcpc->config->type; + port->typec_caps.data = tcpc->config->data; port->typec_caps.revision = 0x0120; /* Type-C spec release 1.2 */ port->typec_caps.pd_revision = 0x0200; /* USB-PD spec release 2.0 */ port->typec_caps.dr_set = tcpm_dr_set; diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 37a15c14a6c6..8b8406867c02 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -393,31 +393,39 @@ static int tps6598x_probe(struct i2c_client *client) if (ret < 0) return ret; + tps->typec_cap.revision = USB_TYPEC_REV_1_2; + tps->typec_cap.pd_revision = 0x200; + tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; + tps->typec_cap.pr_set = tps6598x_pr_set; + tps->typec_cap.dr_set = tps6598x_dr_set; + switch (TPS_SYSCONF_PORTINFO(conf)) { case TPS_PORTINFO_SINK_ACCESSORY: case TPS_PORTINFO_SINK: - tps->typec_cap.type = TYPEC_PORT_UFP; + tps->typec_cap.type = TYPEC_PORT_SNK; + tps->typec_cap.data = TYPEC_PORT_UFP; break; case TPS_PORTINFO_DRP_UFP_DRD: case TPS_PORTINFO_DRP_DFP_DRD: - tps->typec_cap.dr_set = tps6598x_dr_set; - /* fall through */ + tps->typec_cap.type = TYPEC_PORT_DRP; + tps->typec_cap.data = TYPEC_PORT_DRD; + break; case TPS_PORTINFO_DRP_UFP: + tps->typec_cap.type = TYPEC_PORT_DRP; + tps->typec_cap.data = TYPEC_PORT_UFP; + break; case TPS_PORTINFO_DRP_DFP: - tps->typec_cap.pr_set = tps6598x_pr_set; tps->typec_cap.type = TYPEC_PORT_DRP; + tps->typec_cap.data = TYPEC_PORT_DFP; break; case TPS_PORTINFO_SOURCE: - tps->typec_cap.type = TYPEC_PORT_DFP; + tps->typec_cap.type = TYPEC_PORT_SRC; + tps->typec_cap.data = TYPEC_PORT_DFP; break; default: return -ENODEV; } - tps->typec_cap.revision = USB_TYPEC_REV_1_2; - tps->typec_cap.pd_revision = 0x200; - tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; - tps->port = typec_register_port(&client->dev, &tps->typec_cap); if (IS_ERR(tps->port)) return PTR_ERR(tps->port); diff --git a/drivers/usb/typec/typec_wcove.c b/drivers/usb/typec/typec_wcove.c index 2e990e0d917d..19cca7f1b2c5 100644 --- a/drivers/usb/typec/typec_wcove.c +++ b/drivers/usb/typec/typec_wcove.c @@ -572,6 +572,7 @@ static struct tcpc_config wcove_typec_config = { .operating_snk_mw = 15000, .type = TYPEC_PORT_DRP, + .data = TYPEC_PORT_DRD, .default_role = TYPEC_SINK, }; diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 69d544cfcd45..bf0977fbd100 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -592,11 +592,18 @@ static int ucsi_register_port(struct ucsi *ucsi, int index) return ret; if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DRP) - cap->type = TYPEC_PORT_DRP; + cap->data = TYPEC_PORT_DRD; else if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DFP) - cap->type = TYPEC_PORT_DFP; + cap->data = TYPEC_PORT_DFP; else if (con->cap.op_mode & UCSI_CONCAP_OPMODE_UFP) - cap->type = TYPEC_PORT_UFP; + cap->data = TYPEC_PORT_UFP; + + if (con->cap.provider && con->cap.consumer) + cap->type = TYPEC_PORT_DRP; + else if (con->cap.provider) + cap->type = TYPEC_PORT_SRC; + else if (con->cap.consumer) + cap->type = TYPEC_PORT_SNK; cap->revision = ucsi->cap.typec_version; cap->pd_revision = ucsi->cap.pd_version; diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index ca1c0b57f03f..5a5e1d8c5b65 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -91,6 +91,7 @@ struct tcpc_config { unsigned int operating_snk_mw; enum typec_port_type type; + enum typec_port_data data; enum typec_role default_role; bool try_role_hw; /* try.{src,snk} implemented in hardware */ diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index 2408e5c2ed91..672b39bb0adc 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -22,9 +22,15 @@ struct typec_port; struct fwnode_handle; enum typec_port_type { + TYPEC_PORT_SRC, + TYPEC_PORT_SNK, + TYPEC_PORT_DRP, +}; + +enum typec_port_data { TYPEC_PORT_DFP, TYPEC_PORT_UFP, - TYPEC_PORT_DRP, + TYPEC_PORT_DRD, }; enum typec_plug_type { @@ -186,10 +192,11 @@ struct typec_partner_desc { /* * struct typec_capability - USB Type-C Port Capabilities - * @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role) + * @type: Supported power role of the port + * @data: Supported data role of the port * @revision: USB Type-C Specification release. Binary coded decimal * @pd_revision: USB Power Delivery Specification revision if supported - * @prefer_role: Initial role preference + * @prefer_role: Initial role preference (DRP ports). * @accessory: Supported Accessory Modes * @sw: Cable plug orientation switch * @mux: Multiplexer switch for Alternate/Accessory Modes @@ -205,6 +212,7 @@ struct typec_partner_desc { */ struct typec_capability { enum typec_port_type type; + enum typec_port_data data; u16 revision; /* 0120H = "1.2" */ u16 pd_revision; /* 0300H = "3.0" */ int prefer_role; -- cgit v1.2.1 From c6962c29729cc64177f56a466766daa7de9f87ac Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:06 +0300 Subject: usb: typec: tcpm: Set USB role switch to device mode when configured as such Setting the mux to MUX_NONE and the switch to USB_SWITCH_DISCONNECT when the data-role is device is not correct. Plenty of devices support operating as USB device through a (separate) USB device controller. We really need 2 different versions of USB_SWITCH_CONNECT, USB_SWITCH_CONNECT_HOST and USB_SWITCH_DEVICE. Rather then modifying the tcpc_usb_switch enum for this, simply remove it and switch to the usb_role enum which provides exactly this, this will save use needing to convert betweent the 2 enums when calling an usb-role-switch driver later. Besides switching to the usb_role type, this commit also actually sets the mux to TYPEC_MUX_USB and the switch to USB_ROLE_DEVICE instead of setting both to none when the data-role is device. This commit also makes tcpm_reset_port() call tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE) so that the mux and switch do _not_ stay in their last mode after a detach. Signed-off-by: Hans de Goede Reviewed-by: Guenter Roeck Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm.c | 22 +++++++++++----------- include/linux/usb/tcpm.h | 8 ++------ 2 files changed, 13 insertions(+), 17 deletions(-) diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index 62e710bb6367..2519b0d17f1f 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -604,15 +604,15 @@ void tcpm_pd_transmit_complete(struct tcpm_port *port, EXPORT_SYMBOL_GPL(tcpm_pd_transmit_complete); static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, - enum tcpc_usb_switch config) + enum usb_role usb_role) { int ret = 0; - tcpm_log(port, "Requesting mux mode %d, config %d, polarity %d", - mode, config, port->polarity); + tcpm_log(port, "Requesting mux mode %d, usb-role %d, polarity %d", + mode, usb_role, port->polarity); if (port->tcpc->mux) - ret = port->tcpc->mux->set(port->tcpc->mux, mode, config, + ret = port->tcpc->mux->set(port->tcpc->mux, mode, usb_role, port->polarity); return ret; @@ -728,14 +728,15 @@ static int tcpm_set_attached_state(struct tcpm_port *port, bool attached) static int tcpm_set_roles(struct tcpm_port *port, bool attached, enum typec_role role, enum typec_data_role data) { + enum usb_role usb_role; int ret; if (data == TYPEC_HOST) - ret = tcpm_mux_set(port, TYPEC_MUX_USB, - TCPC_USB_SWITCH_CONNECT); + usb_role = USB_ROLE_HOST; else - ret = tcpm_mux_set(port, TYPEC_MUX_NONE, - TCPC_USB_SWITCH_DISCONNECT); + usb_role = USB_ROLE_DEVICE; + + ret = tcpm_mux_set(port, TYPEC_MUX_USB, usb_role); if (ret < 0) return ret; @@ -2028,7 +2029,7 @@ out_disable_vconn: out_disable_pd: port->tcpc->set_pd_rx(port->tcpc, false); out_disable_mux: - tcpm_mux_set(port, TYPEC_MUX_NONE, TCPC_USB_SWITCH_DISCONNECT); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); return ret; } @@ -2072,6 +2073,7 @@ static void tcpm_reset_port(struct tcpm_port *port) tcpm_init_vconn(port); tcpm_set_current_limit(port, 0, 0); tcpm_set_polarity(port, TYPEC_POLARITY_CC1); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); tcpm_set_attached_state(port, false); port->try_src_count = 0; port->try_snk_count = 0; @@ -2122,8 +2124,6 @@ static int tcpm_snk_attach(struct tcpm_port *port) static void tcpm_snk_detach(struct tcpm_port *port) { tcpm_detach(port); - - /* XXX: (Dis)connect SuperSpeed mux? */ } static int tcpm_acc_attach(struct tcpm_port *port) diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index 5a5e1d8c5b65..3e8bdaa5085a 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -16,6 +16,7 @@ #define __LINUX_USB_TCPM_H #include +#include #include #include "pd.h" @@ -98,11 +99,6 @@ struct tcpc_config { const struct typec_altmode_desc *alt_modes; }; -enum tcpc_usb_switch { - TCPC_USB_SWITCH_CONNECT, - TCPC_USB_SWITCH_DISCONNECT, -}; - /* Mux state attributes */ #define TCPC_MUX_USB_ENABLED BIT(0) /* USB enabled */ #define TCPC_MUX_DP_ENABLED BIT(1) /* DP enabled */ @@ -119,7 +115,7 @@ enum tcpc_mux_mode { struct tcpc_mux_dev { int (*set)(struct tcpc_mux_dev *dev, enum tcpc_mux_mode mux_mode, - enum tcpc_usb_switch usb_config, + enum usb_role usb_role, enum typec_cc_polarity polarity); bool dfp_only; void *priv_data; -- cgit v1.2.1 From 2000016c94b4f724cb5851486b9f9a94e8da32fc Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:07 +0300 Subject: usb: typec: tcpm: Use new Type-C switch/mux and usb-role-switch functions Remove the unused (not implemented anywhere) tcpc_mux_dev abstraction and replace it with calling the new typec_set_orientation, usb_role_switch_set and typec_set_mode functions. Signed-off-by: Hans de Goede Reviewed-by: Guenter Roeck Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/Kconfig | 1 + drivers/usb/typec/fusb302/fusb302.c | 1 - drivers/usb/typec/tcpm.c | 46 ++++++++++++++++++++++++++++--------- include/linux/usb/tcpm.h | 10 -------- 4 files changed, 36 insertions(+), 22 deletions(-) diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index bcb2744c5977..a2a0684e7c82 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -48,6 +48,7 @@ if TYPEC config TYPEC_TCPM tristate "USB Type-C Port Controller Manager" depends on USB + select USB_ROLE_SWITCH help The Type-C Port Controller Manager provides a USB PD and USB Type-C state machine for use with Type-C Port Controllers. diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c index 82bf7c0ed53c..703617129067 100644 --- a/drivers/usb/typec/fusb302/fusb302.c +++ b/drivers/usb/typec/fusb302/fusb302.c @@ -1239,7 +1239,6 @@ static void init_tcpc_dev(struct tcpc_dev *fusb302_tcpc_dev) fusb302_tcpc_dev->set_roles = tcpm_set_roles; fusb302_tcpc_dev->start_drp_toggling = tcpm_start_drp_toggling; fusb302_tcpc_dev->pd_transmit = tcpm_pd_transmit; - fusb302_tcpc_dev->mux = NULL; } static const char * const cc_polarity_name[] = { diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index 2519b0d17f1f..677d12138dbd 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -176,6 +177,7 @@ struct tcpm_port { struct typec_port *typec_port; struct tcpc_dev *tcpc; + struct usb_role_switch *role_sw; enum typec_role vconn_role; enum typec_role pwr_role; @@ -604,18 +606,25 @@ void tcpm_pd_transmit_complete(struct tcpm_port *port, EXPORT_SYMBOL_GPL(tcpm_pd_transmit_complete); static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, - enum usb_role usb_role) + enum usb_role usb_role, + enum typec_orientation orientation) { - int ret = 0; + int ret; - tcpm_log(port, "Requesting mux mode %d, usb-role %d, polarity %d", - mode, usb_role, port->polarity); + tcpm_log(port, "Requesting mux mode %d, usb-role %d, orientation %d", + mode, usb_role, orientation); - if (port->tcpc->mux) - ret = port->tcpc->mux->set(port->tcpc->mux, mode, usb_role, - port->polarity); + ret = typec_set_orientation(port->typec_port, orientation); + if (ret) + return ret; - return ret; + if (port->role_sw) { + ret = usb_role_switch_set_role(port->role_sw, usb_role); + if (ret) + return ret; + } + + return typec_set_mode(port->typec_port, mode); } static int tcpm_set_polarity(struct tcpm_port *port, @@ -728,15 +737,21 @@ static int tcpm_set_attached_state(struct tcpm_port *port, bool attached) static int tcpm_set_roles(struct tcpm_port *port, bool attached, enum typec_role role, enum typec_data_role data) { + enum typec_orientation orientation; enum usb_role usb_role; int ret; + if (port->polarity == TYPEC_POLARITY_CC1) + orientation = TYPEC_ORIENTATION_NORMAL; + else + orientation = TYPEC_ORIENTATION_REVERSE; + if (data == TYPEC_HOST) usb_role = USB_ROLE_HOST; else usb_role = USB_ROLE_DEVICE; - ret = tcpm_mux_set(port, TYPEC_MUX_USB, usb_role); + ret = tcpm_mux_set(port, TYPEC_MUX_USB, usb_role, orientation); if (ret < 0) return ret; @@ -2029,7 +2044,8 @@ out_disable_vconn: out_disable_pd: port->tcpc->set_pd_rx(port->tcpc, false); out_disable_mux: - tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE, + TYPEC_ORIENTATION_NONE); return ret; } @@ -2073,7 +2089,8 @@ static void tcpm_reset_port(struct tcpm_port *port) tcpm_init_vconn(port); tcpm_set_current_limit(port, 0, 0); tcpm_set_polarity(port, TYPEC_POLARITY_CC1); - tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE, + TYPEC_ORIENTATION_NONE); tcpm_set_attached_state(port, false); port->try_src_count = 0; port->try_snk_count = 0; @@ -3653,6 +3670,12 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->partner_desc.identity = &port->partner_ident; port->port_type = tcpc->config->type; + port->role_sw = usb_role_switch_get(port->dev); + if (IS_ERR(port->role_sw)) { + err = PTR_ERR(port->role_sw); + goto out_destroy_wq; + } + port->typec_port = typec_register_port(port->dev, &port->typec_caps); if (IS_ERR(port->typec_port)) { err = PTR_ERR(port->typec_port); @@ -3688,6 +3711,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) return port; out_destroy_wq: + usb_role_switch_put(port->role_sw); destroy_workqueue(port->wq); return ERR_PTR(err); } diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index 3e8bdaa5085a..f0d839daeaea 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -16,7 +16,6 @@ #define __LINUX_USB_TCPM_H #include -#include #include #include "pd.h" @@ -113,14 +112,6 @@ enum tcpc_mux_mode { TCPC_MUX_DP_ENABLED, }; -struct tcpc_mux_dev { - int (*set)(struct tcpc_mux_dev *dev, enum tcpc_mux_mode mux_mode, - enum usb_role usb_role, - enum typec_cc_polarity polarity); - bool dfp_only; - void *priv_data; -}; - /** * struct tcpc_dev - Port configuration and callback functions * @config: Pointer to port configuration @@ -172,7 +163,6 @@ struct tcpc_dev { int (*try_role)(struct tcpc_dev *dev, int role); int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type, const struct pd_message *msg); - struct tcpc_mux_dev *mux; }; struct tcpm_port; -- cgit v1.2.1 From d0a0fa9d74b9ba3b24b43fd50c318c27dc34c06f Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 20 Mar 2018 15:57:08 +0300 Subject: xhci: Add option to get next extended capability in list by passing id = 0 Modify xhci_find_next_ext_cap(base, offset, id) to return the next capability offset if 0 is passed for id. Otherwise it will behave as previously and return the offset of the next capability with matching id capability id 0 is not used by xHCI (reserved) This is useful when we want to loop through all capabilities. Signed-off-by: Mathias Nyman Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ext-caps.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index bf7316e130d3..631e7cc62604 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -84,7 +84,8 @@ * @base PCI MMIO registers base address. * @start address at which to start looking, (0 or HCC_PARAMS to start at * beginning of list) - * @id Extended capability ID to search for. + * @id Extended capability ID to search for, or 0 for the next + * capability * * Returns the offset of the next matching extended capability structure. * Some capabilities can occur several times, e.g., the XHCI_EXT_CAPS_PROTOCOL, @@ -110,7 +111,7 @@ static inline int xhci_find_next_ext_cap(void __iomem *base, u32 start, int id) val = readl(base + offset); if (val == ~0) return 0; - if (XHCI_EXT_CAPS_ID(val) == id && offset != start) + if (offset != start && (id == 0 || XHCI_EXT_CAPS_ID(val) == id)) return offset; next = XHCI_EXT_CAPS_NEXT(val); -- cgit v1.2.1 From fa31b3cb2ae143aa6e26974fcbe75689da60bdbe Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:09 +0300 Subject: xhci: Add Intel extended cap / otg phy mux handling The xHCI controller on various Intel SoCs has an extended cap mmio-range which contains registers to control the muxing to the xHCI (host mode) or the dwc3 (device mode) and vbus-detection for the otg usb-phy. Having a role-sw driver included in the xHCI code (under drivers/usb/host) is not desirable. So this commit adds a simple handler for this extended capability, which creates a platform device with the caps mmio region as resource, this allows us to write a separate platform role-sw driver for the role-switch. Note this commit adds a call to the new xhci_ext_cap_init() function to xhci_pci_probe(), it is added here because xhci_ext_cap_init() must be called only once. If in the future we also want to handle ext-caps on non pci xHCI HCDs from xhci_ext_cap_init() a call to it should also be added to other bus probe paths. Signed-off-by: Hans de Goede Acked-by: Mathias Nyman Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Makefile | 2 +- drivers/usb/host/xhci-ext-caps.c | 90 ++++++++++++++++++++++++++++++++++++++++ drivers/usb/host/xhci-ext-caps.h | 2 + drivers/usb/host/xhci-pci.c | 5 +++ drivers/usb/host/xhci.h | 2 + 5 files changed, 100 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/host/xhci-ext-caps.c diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 4ede4ce12366..8a8cffe0b445 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -11,7 +11,7 @@ fhci-y += fhci-mem.o fhci-tds.o fhci-sched.o fhci-$(CONFIG_FHCI_DEBUG) += fhci-dbg.o -xhci-hcd-y := xhci.o xhci-mem.o +xhci-hcd-y := xhci.o xhci-mem.o xhci-ext-caps.o xhci-hcd-y += xhci-ring.o xhci-hub.o xhci-dbg.o xhci-hcd-y += xhci-trace.o diff --git a/drivers/usb/host/xhci-ext-caps.c b/drivers/usb/host/xhci-ext-caps.c new file mode 100644 index 000000000000..399113f9fc5c --- /dev/null +++ b/drivers/usb/host/xhci-ext-caps.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * XHCI extended capability handling + * + * Copyright (c) 2017 Hans de Goede + */ + +#include +#include "xhci.h" + +#define USB_SW_DRV_NAME "intel_xhci_usb_sw" +#define USB_SW_RESOURCE_SIZE 0x400 + +static void xhci_intel_unregister_pdev(void *arg) +{ + platform_device_unregister(arg); +} + +static int xhci_create_intel_xhci_sw_pdev(struct xhci_hcd *xhci, u32 cap_offset) +{ + struct usb_hcd *hcd = xhci_to_hcd(xhci); + struct device *dev = hcd->self.controller; + struct platform_device *pdev; + struct resource res = { 0, }; + int ret; + + pdev = platform_device_alloc(USB_SW_DRV_NAME, PLATFORM_DEVID_NONE); + if (!pdev) { + xhci_err(xhci, "couldn't allocate %s platform device\n", + USB_SW_DRV_NAME); + return -ENOMEM; + } + + res.start = hcd->rsrc_start + cap_offset; + res.end = res.start + USB_SW_RESOURCE_SIZE - 1; + res.name = USB_SW_DRV_NAME; + res.flags = IORESOURCE_MEM; + + ret = platform_device_add_resources(pdev, &res, 1); + if (ret) { + dev_err(dev, "couldn't add resources to intel_xhci_usb_sw pdev\n"); + platform_device_put(pdev); + return ret; + } + + pdev->dev.parent = dev; + + ret = platform_device_add(pdev); + if (ret) { + dev_err(dev, "couldn't register intel_xhci_usb_sw pdev\n"); + platform_device_put(pdev); + return ret; + } + + ret = devm_add_action_or_reset(dev, xhci_intel_unregister_pdev, pdev); + if (ret) { + dev_err(dev, "couldn't add unregister action for intel_xhci_usb_sw pdev\n"); + return ret; + } + + return 0; +} + +int xhci_ext_cap_init(struct xhci_hcd *xhci) +{ + void __iomem *base = &xhci->cap_regs->hc_capbase; + u32 offset, val; + int ret; + + offset = xhci_find_next_ext_cap(base, 0, 0); + + while (offset) { + val = readl(base + offset); + + switch (XHCI_EXT_CAPS_ID(val)) { + case XHCI_EXT_CAPS_VENDOR_INTEL: + if (xhci->quirks & XHCI_INTEL_USB_ROLE_SW) { + ret = xhci_create_intel_xhci_sw_pdev(xhci, + offset); + if (ret) + return ret; + } + break; + } + offset = xhci_find_next_ext_cap(base, offset, 0); + } + + return 0; +} +EXPORT_SYMBOL_GPL(xhci_ext_cap_init); diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index 631e7cc62604..268328c20681 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -39,6 +39,8 @@ #define XHCI_EXT_CAPS_ROUTE 5 /* IDs 6-9 reserved */ #define XHCI_EXT_CAPS_DEBUG 10 +/* Vendor caps */ +#define XHCI_EXT_CAPS_VENDOR_INTEL 192 /* USB Legacy Support Capability - section 7.1.1 */ #define XHCI_HC_BIOS_OWNED (1 << 16) #define XHCI_HC_OS_OWNED (1 << 24) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index d9f831b67e57..f17b7eab66cf 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -178,6 +178,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { xhci->quirks |= XHCI_SSIC_PORT_UNUSED; + xhci->quirks |= XHCI_INTEL_USB_ROLE_SW; } if (pdev->vendor == PCI_VENDOR_ID_INTEL && (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || @@ -311,6 +312,10 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) goto dealloc_usb2_hcd; } + retval = xhci_ext_cap_init(xhci); + if (retval) + goto put_usb3_hcd; + retval = usb_add_hcd(xhci->shared_hcd, dev->irq, IRQF_SHARED); if (retval) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 8acc8f8d790f..05c909b04f14 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1829,6 +1829,7 @@ struct xhci_hcd { #define XHCI_ASMEDIA_MODIFY_FLOWCONTROL (1 << 28) #define XHCI_HW_LPM_DISABLE (1 << 29) #define XHCI_SUSPEND_DELAY (1 << 30) +#define XHCI_INTEL_USB_ROLE_SW (1 << 31) unsigned int num_active_eps; unsigned int limit_active_eps; @@ -2024,6 +2025,7 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks); void xhci_init_driver(struct hc_driver *drv, const struct xhci_driver_overrides *over); int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id); +int xhci_ext_cap_init(struct xhci_hcd *xhci); int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup); int xhci_resume(struct xhci_hcd *xhci, bool hibernated); -- cgit v1.2.1 From f6fb9ec02be1c1718596622263a88ff5490d2e95 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:10 +0300 Subject: usb: roles: Add Intel xHCI USB role switch driver Various Intel SoCs (Cherry Trail, Broxton and others) have an internal USB role switch for swiching the OTG USB data lines between the xHCI host controller and the dwc3 gadget controller. Note on some Cherry Trail systems there is ACPI/AML code listening to edge interrupts on the id-pin (through an _AIE ACPI method) and switching the role between ROLE_HOST and ROLE_NONE based on the id-pin. Note it does not set the role to ROLE_DEVICE, because device-mode is usually not used under Windows. The presence of AML code which modifies the cfg0 reg (on some systems) means that our read/write/modify of cfg0 may race with the AML code doing the same to avoid this we take the global ACPI lock while doing the read/write/modify. Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 6 + drivers/usb/Kconfig | 2 + drivers/usb/Makefile | 2 + drivers/usb/roles/Kconfig | 14 ++ drivers/usb/roles/Makefile | 1 + drivers/usb/roles/intel-xhci-usb-role-switch.c | 192 +++++++++++++++++++++++++ 6 files changed, 217 insertions(+) create mode 100644 drivers/usb/roles/Kconfig create mode 100644 drivers/usb/roles/Makefile create mode 100644 drivers/usb/roles/intel-xhci-usb-role-switch.c diff --git a/MAINTAINERS b/MAINTAINERS index 2bee7ac161e8..d5065cf747e3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14408,6 +14408,12 @@ S: Maintained F: Documentation/hid/hiddev.txt F: drivers/hid/usbhid/ +USB INTEL XHCI ROLE MUX DRIVER +M: Hans de Goede +L: linux-usb@vger.kernel.org +S: Maintained +F: drivers/usb/roles/intel-xhci-usb-role-switch.c + USB ISP116X DRIVER M: Olav Kongas L: linux-usb@vger.kernel.org diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index f278958e04ca..75f7fb151f71 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -171,6 +171,8 @@ source "drivers/usb/gadget/Kconfig" source "drivers/usb/typec/Kconfig" +source "drivers/usb/roles/Kconfig" + config USB_LED_TRIG bool "USB LED Triggers" depends on LEDS_CLASS && LEDS_TRIGGERS diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 060643a1b5c8..7d1b8c82b208 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -65,3 +65,5 @@ obj-$(CONFIG_USB_COMMON) += common/ obj-$(CONFIG_USBIP_CORE) += usbip/ obj-$(CONFIG_TYPEC) += typec/ + +obj-$(CONFIG_USB_ROLE_SWITCH) += roles/ diff --git a/drivers/usb/roles/Kconfig b/drivers/usb/roles/Kconfig new file mode 100644 index 000000000000..f5a5e6f79f1b --- /dev/null +++ b/drivers/usb/roles/Kconfig @@ -0,0 +1,14 @@ +if USB_ROLE_SWITCH + +config USB_ROLES_INTEL_XHCI + tristate "Intel XHCI USB Role Switch" + depends on ACPI && X86 + help + Driver for the internal USB role switch for switching the USB data + lines between the xHCI host controller and the dwc3 gadget controller + found on various Intel SoCs. + + To compile the driver as a module, choose M here: the module will + be called intel-xhci-usb-role-switch. + +endif # USB_ROLE_SWITCH diff --git a/drivers/usb/roles/Makefile b/drivers/usb/roles/Makefile new file mode 100644 index 000000000000..e44b179ba275 --- /dev/null +++ b/drivers/usb/roles/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_USB_ROLES_INTEL_XHCI) += intel-xhci-usb-role-switch.o diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c new file mode 100644 index 000000000000..58c1b60a33c1 --- /dev/null +++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Intel XHCI (Cherry Trail, Broxton and others) USB OTG role switch driver + * + * Copyright (c) 2016-2017 Hans de Goede + * + * Loosely based on android x86 kernel code which is: + * + * Copyright (C) 2014 Intel Corp. + * + * Author: Wu, Hao + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* register definition */ +#define DUAL_ROLE_CFG0 0x68 +#define SW_VBUS_VALID BIT(24) +#define SW_IDPIN_EN BIT(21) +#define SW_IDPIN BIT(20) + +#define DUAL_ROLE_CFG1 0x6c +#define HOST_MODE BIT(29) + +#define DUAL_ROLE_CFG1_POLL_TIMEOUT 1000 + +#define DRV_NAME "intel_xhci_usb_sw" + +struct intel_xhci_usb_data { + struct usb_role_switch *role_sw; + void __iomem *base; +}; + +struct intel_xhci_acpi_match { + const char *hid; + int hrv; +}; + +/* + * ACPI IDs for PMICs which do not support separate data and power role + * detection (USB ACA detection for micro USB OTG), we allow userspace to + * change the role manually on these. + */ +static const struct intel_xhci_acpi_match allow_userspace_ctrl_ids[] = { + { "INT33F4", 3 }, /* X-Powers AXP288 PMIC */ +}; + +static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role) +{ + struct intel_xhci_usb_data *data = dev_get_drvdata(dev); + unsigned long timeout; + acpi_status status; + u32 glk, val; + + /* + * On many CHT devices ACPI event (_AEI) handlers read / modify / + * write the cfg0 register, just like we do. Take the ACPI lock + * to avoid us racing with the AML code. + */ + status = acpi_acquire_global_lock(ACPI_WAIT_FOREVER, &glk); + if (ACPI_FAILURE(status) && status != AE_NOT_CONFIGURED) { + dev_err(dev, "Error could not acquire lock\n"); + return -EIO; + } + + /* Set idpin value as requested */ + val = readl(data->base + DUAL_ROLE_CFG0); + switch (role) { + case USB_ROLE_NONE: + val |= SW_IDPIN; + val &= ~SW_VBUS_VALID; + break; + case USB_ROLE_HOST: + val &= ~SW_IDPIN; + val &= ~SW_VBUS_VALID; + break; + case USB_ROLE_DEVICE: + val |= SW_IDPIN; + val |= SW_VBUS_VALID; + break; + } + val |= SW_IDPIN_EN; + + writel(val, data->base + DUAL_ROLE_CFG0); + + acpi_release_global_lock(glk); + + /* In most case it takes about 600ms to finish mode switching */ + timeout = jiffies + msecs_to_jiffies(DUAL_ROLE_CFG1_POLL_TIMEOUT); + + /* Polling on CFG1 register to confirm mode switch.*/ + do { + val = readl(data->base + DUAL_ROLE_CFG1); + if (!!(val & HOST_MODE) == (role == USB_ROLE_HOST)) + return 0; + + /* Interval for polling is set to about 5 - 10 ms */ + usleep_range(5000, 10000); + } while (time_before(jiffies, timeout)); + + dev_warn(dev, "Timeout waiting for role-switch\n"); + return -ETIMEDOUT; +} + +static enum usb_role intel_xhci_usb_get_role(struct device *dev) +{ + struct intel_xhci_usb_data *data = dev_get_drvdata(dev); + enum usb_role role; + u32 val; + + val = readl(data->base + DUAL_ROLE_CFG0); + + if (!(val & SW_IDPIN)) + role = USB_ROLE_HOST; + else if (val & SW_VBUS_VALID) + role = USB_ROLE_DEVICE; + else + role = USB_ROLE_NONE; + + return role; +} + +static struct usb_role_switch_desc sw_desc = { + .set = intel_xhci_usb_set_role, + .get = intel_xhci_usb_get_role, +}; + +static int intel_xhci_usb_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct intel_xhci_usb_data *data; + struct resource *res; + int i; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->base = devm_ioremap_nocache(dev, res->start, resource_size(res)); + if (IS_ERR(data->base)) + return PTR_ERR(data->base); + + for (i = 0; i < ARRAY_SIZE(allow_userspace_ctrl_ids); i++) + if (acpi_dev_present(allow_userspace_ctrl_ids[i].hid, "1", + allow_userspace_ctrl_ids[i].hrv)) + sw_desc.allow_userspace_control = true; + + platform_set_drvdata(pdev, data); + + data->role_sw = usb_role_switch_register(dev, &sw_desc); + if (IS_ERR(data->role_sw)) + return PTR_ERR(data->role_sw); + + return 0; +} + +static int intel_xhci_usb_remove(struct platform_device *pdev) +{ + struct intel_xhci_usb_data *data = platform_get_drvdata(pdev); + + usb_role_switch_unregister(data->role_sw); + return 0; +} + +static const struct platform_device_id intel_xhci_usb_table[] = { + { .name = DRV_NAME }, + {} +}; +MODULE_DEVICE_TABLE(platform, intel_xhci_usb_table); + +static struct platform_driver intel_xhci_usb_driver = { + .driver = { + .name = DRV_NAME, + }, + .id_table = intel_xhci_usb_table, + .probe = intel_xhci_usb_probe, + .remove = intel_xhci_usb_remove, +}; + +module_platform_driver(intel_xhci_usb_driver); + +MODULE_AUTHOR("Hans de Goede "); +MODULE_DESCRIPTION("Intel XHCI USB role switch driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.1 From da95cc1d9a4c7a5f0add7372527074321981bd98 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:11 +0300 Subject: usb: typec: driver for Pericom PI3USB30532 Type-C cross switch Add a driver for the Pericom PI3USB30532 Type-C cross switch / mux chip found on some devices with a Type-C port. Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 6 ++ drivers/usb/typec/Kconfig | 2 + drivers/usb/typec/Makefile | 1 + drivers/usb/typec/mux/Kconfig | 10 ++ drivers/usb/typec/mux/Makefile | 3 + drivers/usb/typec/mux/pi3usb30532.c | 178 ++++++++++++++++++++++++++++++++++++ 6 files changed, 200 insertions(+) create mode 100644 drivers/usb/typec/mux/Kconfig create mode 100644 drivers/usb/typec/mux/Makefile create mode 100644 drivers/usb/typec/mux/pi3usb30532.c diff --git a/MAINTAINERS b/MAINTAINERS index d5065cf747e3..6dde7af5cf54 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14544,6 +14544,12 @@ F: drivers/usb/ F: include/linux/usb.h F: include/linux/usb/ +USB TYPEC PI3USB30532 MUX DRIVER +M: Hans de Goede +L: linux-usb@vger.kernel.org +S: Maintained +F: drivers/usb/typec/mux/pi3usb30532.c + USB TYPEC SUBSYSTEM M: Heikki Krogerus L: linux-usb@vger.kernel.org diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index a2a0684e7c82..030f88cb0c3f 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -85,4 +85,6 @@ config TYPEC_TPS6598X If you choose to build this driver as a dynamically linked module, the module will be called tps6598x.ko. +source "drivers/usb/typec/mux/Kconfig" + endif # TYPEC diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile index 56b2e9516ec1..1f599a6c30cc 100644 --- a/drivers/usb/typec/Makefile +++ b/drivers/usb/typec/Makefile @@ -6,3 +6,4 @@ obj-y += fusb302/ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o obj-$(CONFIG_TYPEC_UCSI) += ucsi/ obj-$(CONFIG_TYPEC_TPS6598X) += tps6598x.o +obj-$(CONFIG_TYPEC) += mux/ diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig new file mode 100644 index 000000000000..9a954d2b8d8f --- /dev/null +++ b/drivers/usb/typec/mux/Kconfig @@ -0,0 +1,10 @@ +menu "USB Type-C Multiplexer/DeMultiplexer Switch support" + +config TYPEC_MUX_PI3USB30532 + tristate "Pericom PI3USB30532 Type-C cross switch driver" + depends on I2C + help + Say Y or M if your system has a Pericom PI3USB30532 Type-C cross + switch / mux chip found on some devices with a Type-C port. + +endmenu diff --git a/drivers/usb/typec/mux/Makefile b/drivers/usb/typec/mux/Makefile new file mode 100644 index 000000000000..1332e469b8a0 --- /dev/null +++ b/drivers/usb/typec/mux/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o diff --git a/drivers/usb/typec/mux/pi3usb30532.c b/drivers/usb/typec/mux/pi3usb30532.c new file mode 100644 index 000000000000..b0e88db60ecf --- /dev/null +++ b/drivers/usb/typec/mux/pi3usb30532.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Pericom PI3USB30532 Type-C cross switch / mux driver + * + * Copyright (c) 2017-2018 Hans de Goede + */ + +#include +#include +#include +#include +#include +#include + +#define PI3USB30532_CONF 0x00 + +#define PI3USB30532_CONF_OPEN 0x00 +#define PI3USB30532_CONF_SWAP 0x01 +#define PI3USB30532_CONF_4LANE_DP 0x02 +#define PI3USB30532_CONF_USB3 0x04 +#define PI3USB30532_CONF_USB3_AND_2LANE_DP 0x06 + +struct pi3usb30532 { + struct i2c_client *client; + struct mutex lock; /* protects the cached conf register */ + struct typec_switch sw; + struct typec_mux mux; + u8 conf; +}; + +static int pi3usb30532_set_conf(struct pi3usb30532 *pi, u8 new_conf) +{ + int ret = 0; + + if (pi->conf == new_conf) + return 0; + + ret = i2c_smbus_write_byte_data(pi->client, PI3USB30532_CONF, new_conf); + if (ret) { + dev_err(&pi->client->dev, "Error writing conf: %d\n", ret); + return ret; + } + + pi->conf = new_conf; + return 0; +} + +static int pi3usb30532_sw_set(struct typec_switch *sw, + enum typec_orientation orientation) +{ + struct pi3usb30532 *pi = container_of(sw, struct pi3usb30532, sw); + u8 new_conf; + int ret; + + mutex_lock(&pi->lock); + new_conf = pi->conf; + + switch (orientation) { + case TYPEC_ORIENTATION_NONE: + new_conf = PI3USB30532_CONF_OPEN; + break; + case TYPEC_ORIENTATION_NORMAL: + new_conf &= ~PI3USB30532_CONF_SWAP; + break; + case TYPEC_ORIENTATION_REVERSE: + new_conf |= PI3USB30532_CONF_SWAP; + break; + } + + ret = pi3usb30532_set_conf(pi, new_conf); + mutex_unlock(&pi->lock); + + return ret; +} + +static int pi3usb30532_mux_set(struct typec_mux *mux, int state) +{ + struct pi3usb30532 *pi = container_of(mux, struct pi3usb30532, mux); + u8 new_conf; + int ret; + + mutex_lock(&pi->lock); + new_conf = pi->conf; + + switch (state) { + case TYPEC_MUX_NONE: + new_conf = PI3USB30532_CONF_OPEN; + break; + case TYPEC_MUX_USB: + new_conf = (new_conf & PI3USB30532_CONF_SWAP) | + PI3USB30532_CONF_USB3; + break; + case TYPEC_MUX_DP: + new_conf = (new_conf & PI3USB30532_CONF_SWAP) | + PI3USB30532_CONF_4LANE_DP; + break; + case TYPEC_MUX_DOCK: + new_conf = (new_conf & PI3USB30532_CONF_SWAP) | + PI3USB30532_CONF_USB3_AND_2LANE_DP; + break; + } + + ret = pi3usb30532_set_conf(pi, new_conf); + mutex_unlock(&pi->lock); + + return ret; +} + +static int pi3usb30532_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct pi3usb30532 *pi; + int ret; + + pi = devm_kzalloc(dev, sizeof(*pi), GFP_KERNEL); + if (!pi) + return -ENOMEM; + + pi->client = client; + pi->sw.dev = dev; + pi->sw.set = pi3usb30532_sw_set; + pi->mux.dev = dev; + pi->mux.set = pi3usb30532_mux_set; + mutex_init(&pi->lock); + + ret = i2c_smbus_read_byte_data(client, PI3USB30532_CONF); + if (ret < 0) { + dev_err(dev, "Error reading config register %d\n", ret); + return ret; + } + pi->conf = ret; + + ret = typec_switch_register(&pi->sw); + if (ret) { + dev_err(dev, "Error registering typec switch: %d\n", ret); + return ret; + } + + ret = typec_mux_register(&pi->mux); + if (ret) { + typec_switch_unregister(&pi->sw); + dev_err(dev, "Error registering typec mux: %d\n", ret); + return ret; + } + + i2c_set_clientdata(client, pi); + return 0; +} + +static int pi3usb30532_remove(struct i2c_client *client) +{ + struct pi3usb30532 *pi = i2c_get_clientdata(client); + + typec_mux_unregister(&pi->mux); + typec_switch_unregister(&pi->sw); + return 0; +} + +static const struct i2c_device_id pi3usb30532_table[] = { + { "pi3usb30532" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, pi3usb30532_table); + +static struct i2c_driver pi3usb30532_driver = { + .driver = { + .name = "pi3usb30532", + }, + .probe_new = pi3usb30532_probe, + .remove = pi3usb30532_remove, + .id_table = pi3usb30532_table, +}; + +module_i2c_driver(pi3usb30532_driver); + +MODULE_AUTHOR("Hans de Goede "); +MODULE_DESCRIPTION("Pericom PI3USB30532 Type-C mux driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.1 From 29b4aec2f407341963b7e3b15e8756ce815abf8a Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:12 +0300 Subject: platform/x86: intel_cht_int33fe: Add device connections for the Type-C port We need to add device-connections for the Type-C mux/switch and usb-role code to be able to find the PI3USB30532 Type-C cross-switch and the device/host role-switch integrated in the CHT SoC. Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/intel_cht_int33fe.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c index 380ef7ec094f..39d4100c60a2 100644 --- a/drivers/platform/x86/intel_cht_int33fe.c +++ b/drivers/platform/x86/intel_cht_int33fe.c @@ -33,6 +33,8 @@ struct cht_int33fe_data { struct i2c_client *max17047; struct i2c_client *fusb302; struct i2c_client *pi3usb30532; + /* Contain a list-head must be per device */ + struct device_connection connections[3]; }; /* @@ -172,6 +174,20 @@ static int cht_int33fe_probe(struct i2c_client *client) return -EPROBE_DEFER; /* Wait for i2c-adapter to load */ } + data->connections[0].endpoint[0] = "i2c-fusb302"; + data->connections[0].endpoint[1] = "i2c-pi3usb30532"; + data->connections[0].id = "typec-switch"; + data->connections[1].endpoint[0] = "i2c-fusb302"; + data->connections[1].endpoint[1] = "i2c-pi3usb30532"; + data->connections[1].id = "typec-mux"; + data->connections[2].endpoint[0] = "i2c-fusb302"; + data->connections[2].endpoint[1] = "intel_xhci_usb_sw-role-switch"; + data->connections[2].id = "usb-role-switch"; + + device_connection_add(&data->connections[0]); + device_connection_add(&data->connections[1]); + device_connection_add(&data->connections[2]); + memset(&board_info, 0, sizeof(board_info)); strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE); board_info.dev_name = "fusb302"; @@ -201,6 +217,10 @@ out_unregister_max17047: if (data->max17047) i2c_unregister_device(data->max17047); + device_connection_remove(&data->connections[2]); + device_connection_remove(&data->connections[1]); + device_connection_remove(&data->connections[0]); + return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */ } @@ -213,6 +233,10 @@ static int cht_int33fe_remove(struct i2c_client *i2c) if (data->max17047) i2c_unregister_device(data->max17047); + device_connection_remove(&data->connections[2]); + device_connection_remove(&data->connections[1]); + device_connection_remove(&data->connections[0]); + return 0; } -- cgit v1.2.1 From d54f063cdbe414590c97d990111ddff25c6f9593 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 20 Mar 2018 15:57:13 +0300 Subject: extcon: axp288: Set USB role where necessary The AXP288 BC1.2 charger detection / extcon code may seem like a strange place to add code to control the USB role-switch on devices with an AXP288, but there are 2 reasons to do this inside the axp288 extcon code: 1) On many devices the USB role is controlled by ACPI AML code, but the AML code only switches between the host and none roles, because of Windows not really using device mode. To make device mode work we need to toggle between the none/device roles based on Vbus presence, and the axp288 extcon gets interrupts on Vbus insertion / removal. 2) In order for our BC1.2 charger detection to work properly the role mux must be properly set to device mode before we do the detection. Also note the Kconfig help-text / obsolete depends on USB_PHY which are remnants from older never upstreamed code also controlling the mux from the axp288 extcon code. This commit also adds code to get notifications from the INT3496 extcon device, which is used on some devices to notify the kernel about id-pin changes instead of them being handled through AML code. This fixes: -Device mode not working on most CHT devices with an AXP288 -Host mode not working on devices with an INT3496 ACPI device -Charger-type misdetection (always SDP) on devices with an INT3496 when the USB role (always) gets initialized as host Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/extcon/Kconfig | 3 +- drivers/extcon/extcon-axp288.c | 176 +++++++++++++++++++++++++++++++++++++++-- 2 files changed, 170 insertions(+), 9 deletions(-) diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index a7bca4207f44..de15bf55895b 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -30,7 +30,8 @@ config EXTCON_ARIZONA config EXTCON_AXP288 tristate "X-Power AXP288 EXTCON support" - depends on MFD_AXP20X && USB_PHY + depends on MFD_AXP20X && USB_SUPPORT && X86 + select USB_ROLE_SWITCH help Say Y here to enable support for USB peripheral detection and USB MUX switching by X-Power AXP288 PMIC. diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c index 3ec4c715e240..a983708b77a6 100644 --- a/drivers/extcon/extcon-axp288.c +++ b/drivers/extcon/extcon-axp288.c @@ -1,6 +1,7 @@ /* * extcon-axp288.c - X-Power AXP288 PMIC extcon cable detection driver * + * Copyright (c) 2017-2018 Hans de Goede * Copyright (C) 2015 Intel Corporation * Author: Ramakrishna Pallala * @@ -14,6 +15,7 @@ * GNU General Public License for more details. */ +#include #include #include #include @@ -25,6 +27,11 @@ #include #include #include +#include +#include + +#include +#include /* Power source status register */ #define PS_STAT_VBUS_TRIGGER BIT(0) @@ -97,9 +104,19 @@ struct axp288_extcon_info { struct device *dev; struct regmap *regmap; struct regmap_irq_chip_data *regmap_irqc; + struct usb_role_switch *role_sw; + struct work_struct role_work; int irq[EXTCON_IRQ_END]; struct extcon_dev *edev; + struct extcon_dev *id_extcon; + struct notifier_block id_nb; unsigned int previous_cable; + bool vbus_attach; +}; + +static const struct x86_cpu_id cherry_trail_cpu_ids[] = { + { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_AIRMONT, X86_FEATURE_ANY }, + {} }; /* Power up/down reason string array */ @@ -137,20 +154,74 @@ static void axp288_extcon_log_rsi(struct axp288_extcon_info *info) regmap_write(info->regmap, AXP288_PS_BOOT_REASON_REG, clear_mask); } -static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info) +/* + * The below code to control the USB role-switch on devices with an AXP288 + * may seem out of place, but there are 2 reasons why this is the best place + * to control the USB role-switch on such devices: + * 1) On many devices the USB role is controlled by AML code, but the AML code + * only switches between the host and none roles, because of Windows not + * really using device mode. To make device mode work we need to toggle + * between the none/device roles based on Vbus presence, and this driver + * gets interrupts on Vbus insertion / removal. + * 2) In order for our BC1.2 charger detection to work properly the role + * mux must be properly set to device mode before we do the detection. + */ + +/* Returns the id-pin value, note pulled low / false == host-mode */ +static bool axp288_get_id_pin(struct axp288_extcon_info *info) { - int ret, stat, cfg, pwr_stat; - u8 chrg_type; - unsigned int cable = info->previous_cable; - bool vbus_attach = false; + enum usb_role role; + + if (info->id_extcon) + return extcon_get_state(info->id_extcon, EXTCON_USB_HOST) <= 0; + + /* We cannot access the id-pin, see what mode the AML code has set */ + role = usb_role_switch_get_role(info->role_sw); + return role != USB_ROLE_HOST; +} + +static void axp288_usb_role_work(struct work_struct *work) +{ + struct axp288_extcon_info *info = + container_of(work, struct axp288_extcon_info, role_work); + enum usb_role role; + bool id_pin; + int ret; + + id_pin = axp288_get_id_pin(info); + if (!id_pin) + role = USB_ROLE_HOST; + else if (info->vbus_attach) + role = USB_ROLE_DEVICE; + else + role = USB_ROLE_NONE; + + ret = usb_role_switch_set_role(info->role_sw, role); + if (ret) + dev_err(info->dev, "failed to set role: %d\n", ret); +} + +static bool axp288_get_vbus_attach(struct axp288_extcon_info *info) +{ + int ret, pwr_stat; ret = regmap_read(info->regmap, AXP288_PS_STAT_REG, &pwr_stat); if (ret < 0) { dev_err(info->dev, "failed to read vbus status\n"); - return ret; + return false; } - vbus_attach = (pwr_stat & PS_STAT_VBUS_VALID); + return !!(pwr_stat & PS_STAT_VBUS_VALID); +} + +static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info) +{ + int ret, stat, cfg; + u8 chrg_type; + unsigned int cable = info->previous_cable; + bool vbus_attach = false; + + vbus_attach = axp288_get_vbus_attach(info); if (!vbus_attach) goto no_vbus; @@ -201,6 +272,12 @@ no_vbus: info->previous_cable = cable; } + if (info->role_sw && info->vbus_attach != vbus_attach) { + info->vbus_attach = vbus_attach; + /* Setting the role can take a while */ + queue_work(system_long_wq, &info->role_work); + } + return 0; dev_det_ret: @@ -210,6 +287,18 @@ dev_det_ret: return ret; } +static int axp288_extcon_id_evt(struct notifier_block *nb, + unsigned long event, void *param) +{ + struct axp288_extcon_info *info = + container_of(nb, struct axp288_extcon_info, id_nb); + + /* We may not sleep and setting the role can take a while */ + queue_work(system_long_wq, &info->role_work); + + return NOTIFY_OK; +} + static irqreturn_t axp288_extcon_isr(int irq, void *data) { struct axp288_extcon_info *info = data; @@ -231,10 +320,20 @@ static void axp288_extcon_enable(struct axp288_extcon_info *info) BC_GLOBAL_RUN, BC_GLOBAL_RUN); } +static void axp288_put_role_sw(void *data) +{ + struct axp288_extcon_info *info = data; + + cancel_work_sync(&info->role_work); + usb_role_switch_put(info->role_sw); +} + static int axp288_extcon_probe(struct platform_device *pdev) { struct axp288_extcon_info *info; struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); + struct device *dev = &pdev->dev; + const char *name; int ret, i, pirq; info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); @@ -245,9 +344,33 @@ static int axp288_extcon_probe(struct platform_device *pdev) info->regmap = axp20x->regmap; info->regmap_irqc = axp20x->regmap_irqc; info->previous_cable = EXTCON_NONE; + INIT_WORK(&info->role_work, axp288_usb_role_work); + info->id_nb.notifier_call = axp288_extcon_id_evt; platform_set_drvdata(pdev, info); + info->role_sw = usb_role_switch_get(dev); + if (IS_ERR(info->role_sw)) + return PTR_ERR(info->role_sw); + if (info->role_sw) { + ret = devm_add_action_or_reset(dev, axp288_put_role_sw, info); + if (ret) + return ret; + + name = acpi_dev_get_first_match_name("INT3496", NULL, -1); + if (name) { + info->id_extcon = extcon_get_extcon_dev(name); + if (!info->id_extcon) + return -EPROBE_DEFER; + + dev_info(dev, "controlling USB role\n"); + } else { + dev_info(dev, "controlling USB role based on Vbus presence\n"); + } + } + + info->vbus_attach = axp288_get_vbus_attach(info); + axp288_extcon_log_rsi(info); /* Initialize extcon device */ @@ -289,6 +412,19 @@ static int axp288_extcon_probe(struct platform_device *pdev) } } + if (info->id_extcon) { + ret = devm_extcon_register_notifier_all(dev, info->id_extcon, + &info->id_nb); + if (ret) + return ret; + } + + /* Make sure the role-sw is set correctly before doing BC detection */ + if (info->role_sw) { + queue_work(system_long_wq, &info->role_work); + flush_work(&info->role_work); + } + /* Start charger cable type detection */ axp288_extcon_enable(info); @@ -308,8 +444,32 @@ static struct platform_driver axp288_extcon_driver = { .name = "axp288_extcon", }, }; -module_platform_driver(axp288_extcon_driver); + +static struct device_connection axp288_extcon_role_sw_conn = { + .endpoint[0] = "axp288_extcon", + .endpoint[1] = "intel_xhci_usb_sw-role-switch", + .id = "usb-role-switch", +}; + +static int __init axp288_extcon_init(void) +{ + if (x86_match_cpu(cherry_trail_cpu_ids)) + device_connection_add(&axp288_extcon_role_sw_conn); + + return platform_driver_register(&axp288_extcon_driver); +} +module_init(axp288_extcon_init); + +static void __exit axp288_extcon_exit(void) +{ + if (x86_match_cpu(cherry_trail_cpu_ids)) + device_connection_remove(&axp288_extcon_role_sw_conn); + + platform_driver_unregister(&axp288_extcon_driver); +} +module_exit(axp288_extcon_exit); MODULE_AUTHOR("Ramakrishna Pallala "); +MODULE_AUTHOR("Hans de Goede "); MODULE_DESCRIPTION("X-Powers AXP288 extcon driver"); MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From 3864e9451ba6463f70b1db5ac541d0a490c2c60e Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 22 Mar 2018 11:22:24 +0100 Subject: usb: phy: ab8500: Drop AB8540/9540 support The AB8540 was an evolved version of the AB8500, but it was never mass produced or put into products, only reference designs exist. The upstream support was never completed and it is unlikely that this will happen so drop the support for now to simplify maintenance of the AB8500. Cc: Loic Pallardy Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-ab8500-usb.c | 506 --------------------------------------- 1 file changed, 506 deletions(-) diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 87295313a10c..7eb2b2b911e5 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -29,17 +29,12 @@ /* Bank AB8500_USB */ #define AB8500_USB_LINE_STAT_REG 0x80 #define AB8505_USB_LINE_STAT_REG 0x94 -#define AB8540_USB_LINK_STAT_REG 0x94 -#define AB9540_USB_LINK_STAT_REG 0x94 -#define AB8540_USB_OTG_CTL_REG 0x87 #define AB8500_USB_PHY_CTRL_REG 0x8A -#define AB8540_VBUS_CTRL_REG 0x82 /* Bank AB8500_DEVELOPMENT */ #define AB8500_BANK12_ACCESS 0x00 /* Bank AB8500_DEBUG */ -#define AB8540_DEBUG 0x32 #define AB8500_USB_PHY_TUNE1 0x05 #define AB8500_USB_PHY_TUNE2 0x06 #define AB8500_USB_PHY_TUNE3 0x07 @@ -53,10 +48,6 @@ #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) #define AB8500_BIT_WD_CTRL_KICK (1 << 1) #define AB8500_BIT_SOURCE2_VBUSDET (1 << 7) -#define AB8540_BIT_OTG_CTL_VBUS_VALID_ENA (1 << 0) -#define AB8540_BIT_OTG_CTL_ID_HOST_ENA (1 << 1) -#define AB8540_BIT_OTG_CTL_ID_DEV_ENA (1 << 5) -#define AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA (1 << 0) #define AB8500_WD_KICK_DELAY_US 100 /* usec */ #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ @@ -113,68 +104,6 @@ enum ab8505_usb_link_status { USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505, }; -enum ab8540_usb_link_status { - USB_LINK_NOT_CONFIGURED_8540 = 0, - USB_LINK_STD_HOST_NC_8540, - USB_LINK_STD_HOST_C_NS_8540, - USB_LINK_STD_HOST_C_S_8540, - USB_LINK_CDP_8540, - USB_LINK_RESERVED0_8540, - USB_LINK_RESERVED1_8540, - USB_LINK_DEDICATED_CHG_8540, - USB_LINK_ACA_RID_A_8540, - USB_LINK_ACA_RID_B_8540, - USB_LINK_ACA_RID_C_NM_8540, - USB_LINK_RESERVED2_8540, - USB_LINK_RESERVED3_8540, - USB_LINK_HM_IDGND_8540, - USB_LINK_CHARGERPORT_NOT_OK_8540, - USB_LINK_CHARGER_DM_HIGH_8540, - USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540, - USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540, - USB_LINK_STD_UPSTREAM_8540, - USB_LINK_CHARGER_SE1_8540, - USB_LINK_CARKIT_CHGR_1_8540, - USB_LINK_CARKIT_CHGR_2_8540, - USB_LINK_ACA_DOCK_CHGR_8540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8540, - USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8540, - USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8540, - USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8540 -}; - -enum ab9540_usb_link_status { - USB_LINK_NOT_CONFIGURED_9540 = 0, - USB_LINK_STD_HOST_NC_9540, - USB_LINK_STD_HOST_C_NS_9540, - USB_LINK_STD_HOST_C_S_9540, - USB_LINK_CDP_9540, - USB_LINK_RESERVED0_9540, - USB_LINK_RESERVED1_9540, - USB_LINK_DEDICATED_CHG_9540, - USB_LINK_ACA_RID_A_9540, - USB_LINK_ACA_RID_B_9540, - USB_LINK_ACA_RID_C_NM_9540, - USB_LINK_RESERVED2_9540, - USB_LINK_RESERVED3_9540, - USB_LINK_HM_IDGND_9540, - USB_LINK_CHARGERPORT_NOT_OK_9540, - USB_LINK_CHARGER_DM_HIGH_9540, - USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540, - USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540, - USB_LINK_STD_UPSTREAM_9540, - USB_LINK_CHARGER_SE1_9540, - USB_LINK_CARKIT_CHGR_1_9540, - USB_LINK_CARKIT_CHGR_2_9540, - USB_LINK_ACA_DOCK_CHGR_9540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_9540, - USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_9540, - USB_LINK_SAMSUNG_UART_CBL_PHY_EN_9540, - USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_9540, - USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_9540 -}; - enum ab8500_usb_mode { USB_IDLE = 0, USB_PERIPHERAL, @@ -192,10 +121,6 @@ enum ab8500_usb_mode { #define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3) /* Enable setting regulators voltage */ #define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4) -/* Enable the check_vbus_status workaround */ -#define AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS (1 << 5) -/* Enable the vbus host workaround */ -#define AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK (1 << 6) struct ab8500_usb { struct usb_phy phy; @@ -203,7 +128,6 @@ struct ab8500_usb { struct ab8500 *ab8500; unsigned vbus_draw; struct work_struct phy_dis_work; - struct work_struct vbus_event_work; enum ab8500_usb_mode mode; struct clk *sysclk; struct regulator *v_ape; @@ -342,15 +266,6 @@ static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, bit, bit); - - if (ab->flags & AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK) { - if (sel_host) - abx500_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_OTG_CTL_REG, - AB8540_BIT_OTG_CTL_VBUS_VALID_ENA | - AB8540_BIT_OTG_CTL_ID_HOST_ENA | - AB8540_BIT_OTG_CTL_ID_DEV_ENA); - } } static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) @@ -395,263 +310,6 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) -static int ab9540_usb_link_status_update(struct ab8500_usb *ab, - enum ab9540_usb_link_status lsts) -{ - enum ux500_musb_vbus_id_status event = 0; - - dev_dbg(ab->dev, "ab9540_usb_link_status_update %d\n", lsts); - - if (ab->previous_link_status_state == USB_LINK_HM_IDGND_9540 && - (lsts == USB_LINK_STD_HOST_C_NS_9540 || - lsts == USB_LINK_STD_HOST_NC_9540)) - return 0; - - if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_9540 && - (lsts == USB_LINK_STD_HOST_NC_9540)) - return 0; - - ab->previous_link_status_state = lsts; - - switch (lsts) { - case USB_LINK_ACA_RID_B_9540: - event = UX500_MUSB_RIDB; - case USB_LINK_NOT_CONFIGURED_9540: - case USB_LINK_RESERVED0_9540: - case USB_LINK_RESERVED1_9540: - case USB_LINK_RESERVED2_9540: - case USB_LINK_RESERVED3_9540: - if (ab->mode == USB_PERIPHERAL) - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - if (event != UX500_MUSB_RIDB) - event = UX500_MUSB_NONE; - /* Fallback to default B_IDLE as nothing is connected. */ - ab->phy.otg->state = OTG_STATE_B_IDLE; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - break; - - case USB_LINK_ACA_RID_C_NM_9540: - event = UX500_MUSB_RIDC; - case USB_LINK_STD_HOST_NC_9540: - case USB_LINK_STD_HOST_C_NS_9540: - case USB_LINK_STD_HOST_C_S_9540: - case USB_LINK_CDP_9540: - if (ab->mode == USB_HOST) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (ab->mode == USB_IDLE) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (event != UX500_MUSB_RIDC) - event = UX500_MUSB_VBUS; - break; - - case USB_LINK_ACA_RID_A_9540: - event = UX500_MUSB_RIDA; - case USB_LINK_HM_IDGND_9540: - case USB_LINK_STD_UPSTREAM_9540: - if (ab->mode == USB_PERIPHERAL) { - ab->mode = USB_HOST; - ab8500_usb_peri_phy_dis(ab); - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - if (ab->mode == USB_IDLE) { - ab->mode = USB_HOST; - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - ab->phy.otg->default_a = true; - if (event != UX500_MUSB_RIDA) - event = UX500_MUSB_ID; - - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - break; - - case USB_LINK_DEDICATED_CHG_9540: - ab->mode = USB_DEDICATED_CHG; - event = UX500_MUSB_CHARGER; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); - break; - - case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540: - case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540: - if (!(is_ab9540_2p0_or_earlier(ab->ab8500))) { - event = UX500_MUSB_NONE; - if (ab->mode == USB_HOST) { - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_host_phy_dis(ab); - ab->mode = USB_IDLE; - } - if (ab->mode == USB_PERIPHERAL) { - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_peri_phy_dis(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, - &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - } - } - break; - - default: - break; - } - - return 0; -} - -static int ab8540_usb_link_status_update(struct ab8500_usb *ab, - enum ab8540_usb_link_status lsts) -{ - enum ux500_musb_vbus_id_status event = 0; - - dev_dbg(ab->dev, "ab8540_usb_link_status_update %d\n", lsts); - - if (ab->enabled_charging_detection) { - /* Disable USB Charger detection */ - abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_VBUS_CTRL_REG, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, 0x00); - ab->enabled_charging_detection = false; - } - - /* - * Spurious link_status interrupts are seen in case of a - * disconnection of a device in IDGND and RIDA stage - */ - if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8540 && - (lsts == USB_LINK_STD_HOST_C_NS_8540 || - lsts == USB_LINK_STD_HOST_NC_8540)) - return 0; - - if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8540 && - (lsts == USB_LINK_STD_HOST_NC_8540)) - return 0; - - ab->previous_link_status_state = lsts; - - switch (lsts) { - case USB_LINK_ACA_RID_B_8540: - event = UX500_MUSB_RIDB; - case USB_LINK_NOT_CONFIGURED_8540: - case USB_LINK_RESERVED0_8540: - case USB_LINK_RESERVED1_8540: - case USB_LINK_RESERVED2_8540: - case USB_LINK_RESERVED3_8540: - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - if (event != UX500_MUSB_RIDB) - event = UX500_MUSB_NONE; - /* - * Fallback to default B_IDLE as nothing - * is connected - */ - ab->phy.otg->state = OTG_STATE_B_IDLE; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - break; - - case USB_LINK_ACA_RID_C_NM_8540: - event = UX500_MUSB_RIDC; - case USB_LINK_STD_HOST_NC_8540: - case USB_LINK_STD_HOST_C_NS_8540: - case USB_LINK_STD_HOST_C_S_8540: - case USB_LINK_CDP_8540: - if (ab->mode == USB_IDLE) { - ab->mode = USB_PERIPHERAL; - ab8500_usb_peri_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); - } - if (event != UX500_MUSB_RIDC) - event = UX500_MUSB_VBUS; - break; - - case USB_LINK_ACA_RID_A_8540: - case USB_LINK_ACA_DOCK_CHGR_8540: - event = UX500_MUSB_RIDA; - case USB_LINK_HM_IDGND_8540: - case USB_LINK_STD_UPSTREAM_8540: - if (ab->mode == USB_IDLE) { - ab->mode = USB_HOST; - ab8500_usb_host_phy_en(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_PREPARE, &ab->vbus_draw); - } - ab->phy.otg->default_a = true; - if (event != UX500_MUSB_RIDA) - event = UX500_MUSB_ID; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - break; - - case USB_LINK_DEDICATED_CHG_8540: - ab->mode = USB_DEDICATED_CHG; - event = UX500_MUSB_CHARGER; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); - break; - - case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540: - case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540: - event = UX500_MUSB_NONE; - if (ab->mode == USB_HOST) { - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_host_phy_dis(ab); - ab->mode = USB_IDLE; - } - if (ab->mode == USB_PERIPHERAL) { - atomic_notifier_call_chain(&ab->phy.notifier, - event, &ab->vbus_draw); - ab8500_usb_peri_phy_dis(ab); - atomic_notifier_call_chain(&ab->phy.notifier, - UX500_MUSB_CLEAN, &ab->vbus_draw); - ab->mode = USB_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - usb_phy_set_event(&ab->phy, USB_EVENT_NONE); - } - break; - - default: - event = UX500_MUSB_NONE; - break; - } - - return 0; -} - static int ab8505_usb_link_status_update(struct ab8500_usb *ab, enum ab8505_usb_link_status lsts) { @@ -858,20 +516,6 @@ static int abx500_usb_link_status_update(struct ab8500_usb *ab) AB8500_USB, AB8505_USB_LINE_STAT_REG, ®); lsts = (reg >> 3) & 0x1F; ret = ab8505_usb_link_status_update(ab, lsts); - } else if (is_ab8540(ab->ab8500)) { - enum ab8540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_LINK_STAT_REG, ®); - lsts = (reg >> 3) & 0xFF; - ret = ab8540_usb_link_status_update(ab, lsts); - } else if (is_ab9540(ab->ab8500)) { - enum ab9540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB9540_USB_LINK_STAT_REG, ®); - lsts = (reg >> 3) & 0xFF; - ret = ab9540_usb_link_status_update(ab, lsts); } return ret; @@ -946,69 +590,6 @@ static void ab8500_usb_phy_disable_work(struct work_struct *work) ab8500_usb_peri_phy_dis(ab); } -/* Check if VBUS is set and linkstatus has not detected a cable. */ -static bool ab8500_usb_check_vbus_status(struct ab8500_usb *ab) -{ - u8 isource2; - u8 reg; - enum ab8540_usb_link_status lsts; - - abx500_get_register_interruptible(ab->dev, - AB8500_INTERRUPT, AB8500_IT_SOURCE2_REG, - &isource2); - - /* If Vbus is below 3.6V abort */ - if (!(isource2 & AB8500_BIT_SOURCE2_VBUSDET)) - return false; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, AB8540_USB_LINK_STAT_REG, - ®); - - lsts = (reg >> 3) & 0xFF; - - /* Check if linkstatus has detected a cable */ - if (lsts) - return false; - - return true; -} - -/* re-trigger charger detection again with watchdog re-kick. */ -static void ab8500_usb_vbus_turn_on_event_work(struct work_struct *work) -{ - struct ab8500_usb *ab = container_of(work, struct ab8500_usb, - vbus_event_work); - - if (ab->mode != USB_IDLE) - return; - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - AB8500_BIT_WD_CTRL_ENABLE); - - udelay(100); - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK); - - udelay(100); - - /* Disable Main watchdog */ - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, - 0x0); - - /* Enable USB Charger detection */ - abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_USB, AB8540_VBUS_CTRL_REG, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, - AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA); - - ab->enabled_charging_detection = true; -} - static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend) { /* TODO */ @@ -1256,66 +837,6 @@ static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) err); } -static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) -{ - int err; - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE1, 0xCC); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register ret=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register ret=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 register ret=%d\n", - err); -} - -static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) -{ - int err; - - /* Enable the PBT/Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); -} - static int ab8500_usb_probe(struct platform_device *pdev) { struct ab8500_usb *ab; @@ -1362,17 +883,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | AB8500_USB_FLAG_USE_VBUS_DET_IRQ | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - } else if (is_ab8540(ab->ab8500)) { - ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | - AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS | - AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK | - AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - } else if (is_ab9540(ab->ab8500)) { - ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | - AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; - if (is_ab9540_2p0_or_earlier(ab->ab8500)) - ab->flags |= AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | - AB8500_USB_FLAG_USE_VBUS_DET_IRQ; } /* Disable regulator voltage setting for AB8500 <= v2.0 */ @@ -1384,8 +894,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); - INIT_WORK(&ab->vbus_event_work, ab8500_usb_vbus_turn_on_event_work); - err = ab8500_usb_regulator_get(ab); if (err) return err; @@ -1412,12 +920,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) else if (is_ab8505(ab->ab8500)) /* Phy tuning values for AB8505 */ ab8500_usb_set_ab8505_tuning_values(ab); - else if (is_ab8540(ab->ab8500)) - /* Phy tuning values for AB8540 */ - ab8500_usb_set_ab8540_tuning_values(ab); - else if (is_ab9540(ab->ab8500)) - /* Phy tuning values for AB9540 */ - ab8500_usb_set_ab9540_tuning_values(ab); /* Needed to enable ID detection. */ ab8500_usb_wd_workaround(ab); @@ -1428,11 +930,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) */ ab8500_usb_restart_phy(ab); - if (ab->flags & AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS) { - if (ab8500_usb_check_vbus_status(ab)) - schedule_work(&ab->vbus_event_work); - } - abx500_usb_link_status_update(ab); dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev); @@ -1445,7 +942,6 @@ static int ab8500_usb_remove(struct platform_device *pdev) struct ab8500_usb *ab = platform_get_drvdata(pdev); cancel_work_sync(&ab->phy_dis_work); - cancel_work_sync(&ab->vbus_event_work); usb_remove_phy(&ab->phy); @@ -1459,8 +955,6 @@ static int ab8500_usb_remove(struct platform_device *pdev) static const struct platform_device_id ab8500_usb_devtype[] = { { .name = "ab8500-usb", }, - { .name = "ab8540-usb", }, - { .name = "ab9540-usb", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype); -- cgit v1.2.1 From 29bca25e1bc4745b021e40b81b294b319693bde0 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 22 Mar 2018 20:12:50 +0800 Subject: usb: skip phys initialization of shared hcd The phys has already been initialized when add primary hcd, including usb2 phys and usb3 phys also if exist, so needn't re-parse "phys" property again. Signed-off-by: Chunfeng Yun Reviewed-by: Roger Quadros Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 5a92d8f7c484..777036ae6367 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2757,7 +2757,7 @@ int usb_add_hcd(struct usb_hcd *hcd, } } - if (!hcd->skip_phy_initialization) { + if (!hcd->skip_phy_initialization && usb_hcd_is_primary_hcd(hcd)) { hcd->phy_roothub = usb_phy_roothub_init(hcd->self.sysdev); if (IS_ERR(hcd->phy_roothub)) { retval = PTR_ERR(hcd->phy_roothub); -- cgit v1.2.1 From aaeab02ddcc830e31c33cdb72a3c117b2d499ae2 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 23 Mar 2018 13:44:06 +1100 Subject: usb/gadget: Add an EP dispose() callback for EP lifetime tracking Some UDC may want to allocate endpoints dynamically, either because the HW supports an arbitrary large number or because (like the Aspeed BMC SoCs), the pool of HW endpoints is shared between multiple gadgets. The allocation side can be done rather easily using the existing match_ep() UDC hook. However we have no good place to "free" them. This implements a "simple" variant of this, which calls an EP dispose callback on all EPs associated with a gadget when the composite device gets unbound. This is required by my upcoming Aspeed vHub driver. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 16 ++++++++++++++++ include/linux/usb/gadget.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 1924e20f6e8c..63a7cb87514a 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -2142,6 +2142,7 @@ end: void composite_dev_cleanup(struct usb_composite_dev *cdev) { struct usb_gadget_string_container *uc, *tmp; + struct usb_ep *ep, *tmp_ep; list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { list_del(&uc->list); @@ -2163,6 +2164,21 @@ void composite_dev_cleanup(struct usb_composite_dev *cdev) } cdev->next_string_id = 0; device_remove_file(&cdev->gadget->dev, &dev_attr_suspended); + + /* + * Some UDC backends have a dynamic EP allocation scheme. + * + * In that case, the dispose() callback is used to notify the + * backend that the EPs are no longer in use. + * + * Note: The UDC backend can remove the EP from the ep_list as + * a result, so we need to use the _safe list iterator. + */ + list_for_each_entry_safe(ep, tmp_ep, + &cdev->gadget->ep_list, ep_list) { + if (ep->ops->dispose) + ep->ops->dispose(ep); + } } static int composite_bind(struct usb_gadget *gadget, diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 66a5cff7ee14..e3424234b23a 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -129,6 +129,7 @@ struct usb_ep_ops { int (*enable) (struct usb_ep *ep, const struct usb_endpoint_descriptor *desc); int (*disable) (struct usb_ep *ep); + void (*dispose) (struct usb_ep *ep); struct usb_request *(*alloc_request) (struct usb_ep *ep, gfp_t gfp_flags); -- cgit v1.2.1 From 9608e5c0f079390473b484ef92334dfd3431bb89 Mon Sep 17 00:00:00 2001 From: Major Hayden Date: Fri, 23 Feb 2018 14:29:54 -0600 Subject: USB: serial: ftdi_sio: add RT Systems VX-8 cable This patch adds a device ID for the RT Systems cable used to program Yaesu VX-8R/VX-8DR handheld radios. It uses the main FTDI VID instead of the common RT Systems VID. Signed-off-by: Major Hayden Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index f58c4ff6b387..368891c58120 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -769,6 +769,7 @@ static const struct usb_device_id id_table_combined[] = { .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, { USB_DEVICE(NOVITUS_VID, NOVITUS_BONO_E_PID) }, + { USB_DEVICE(FTDI_VID, RTSYSTEMS_USB_VX8_PID) }, { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S03_PID) }, { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_59_PID) }, { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57A_PID) }, diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 8b4ecd2bd297..598c2317c3d4 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -923,6 +923,9 @@ /* * RT Systems programming cables for various ham radios */ +/* This device uses the VID of FTDI */ +#define RTSYSTEMS_USB_VX8_PID 0x9e50 /* USB-VX8 USB to 7 pin modular plug for Yaesu VX-8 radio */ + #define RTSYSTEMS_VID 0x2100 /* Vendor ID */ #define RTSYSTEMS_USB_S03_PID 0x9001 /* RTS-03 USB to Serial Adapter */ #define RTSYSTEMS_USB_59_PID 0x9e50 /* USB-59 USB to 8 pin plug */ -- cgit v1.2.1 From 1f1e82f74c0947e40144688c9e36abe4b3999f49 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 6 Mar 2018 09:32:43 +0100 Subject: USB: serial: cp210x: add ELDAT Easywave RX09 id Add device id for ELDAT Easywave RX09 tranceiver. Reported-by: Jan Jansen Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 06d502b3e913..de1e759dd512 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -155,6 +155,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x12B8, 0xEC62) }, /* Link G4+ ECU */ { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ + { USB_DEVICE(0x155A, 0x1006) }, /* ELDAT Easywave RX09 */ { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ -- cgit v1.2.1 From 6555ad13a01952c16485c82a52ad1f3e07e34b3a Mon Sep 17 00:00:00 2001 From: Clemens Werther Date: Fri, 16 Mar 2018 10:20:46 +0100 Subject: USB: serial: ftdi_sio: add support for Harman FirmwareHubEmulator Add device id for Harman FirmwareHubEmulator to make the device auto-detectable by the driver. Signed-off-by: Clemens Werther Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 368891c58120..87202ad5a50d 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -932,6 +932,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LS_LOGBOOK_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_HS_LOGBOOK_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CINTERION_MC55I_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_FHE_PID) }, { USB_DEVICE(FTDI_VID, FTDI_DOTEC_PID) }, { USB_DEVICE(QIHARDWARE_VID, MILKYMISTONE_JTAGSERIAL_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 598c2317c3d4..975d02666c5a 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -1444,6 +1444,12 @@ */ #define FTDI_CINTERION_MC55I_PID 0xA951 +/* + * Product: FirmwareHubEmulator + * Manufacturer: Harman Becker Automotive Systems + */ +#define FTDI_FHE_PID 0xA9A0 + /* * Product: Comet Caller ID decoder * Manufacturer: Crucible Technologies -- cgit v1.2.1 From 0442d7b08600625e0bd310fb02894840fa35f070 Mon Sep 17 00:00:00 2001 From: Tomeu Vizoso Date: Thu, 22 Mar 2018 16:18:32 +0100 Subject: usb: hub: Reduce warning to notice on power loss Currently we warn the user when the root hub lost power after resume, but the user cannot do anything about it so it should probably be a notice. This will reduce the noise in the console during suspend and resume, which is already quite significant in many systems. Signed-off-by: Tomeu Vizoso Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index aaeef03c0d83..793eda1cfe49 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3655,7 +3655,7 @@ static int hub_reset_resume(struct usb_interface *intf) */ void usb_root_hub_lost_power(struct usb_device *rhdev) { - dev_warn(&rhdev->dev, "root hub lost power or was reset\n"); + dev_notice(&rhdev->dev, "root hub lost power or was reset\n"); rhdev->reset_resume = 1; } EXPORT_SYMBOL_GPL(usb_root_hub_lost_power); -- cgit v1.2.1 From 64627388b50158fd24d6ad88132525b95a5ef573 Mon Sep 17 00:00:00 2001 From: Zhengjun Xing Date: Wed, 21 Mar 2018 13:29:42 +0800 Subject: USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit USB3 hubs don't support global suspend. USB3 specification 10.10, Enhanced SuperSpeed hubs only support selective suspend and resume, they do not support global suspend/resume where the hub downstream facing ports states are not affected. When system enters hibernation it first enters freeze process where only the root hub enters suspend, usb_port_suspend() is not called for other devices, and suspend status flags are not set for them. Other devices are expected to suspend globally. Some external USB3 hubs will suspend the downstream facing port at global suspend. These devices won't be resumed at thaw as the suspend status flag is not set. A USB3 removable hard disk connected through a USB3 hub that won't resume at thaw will fail to synchronize SCSI cache, return “cmd cmplt err -71” error, and needs a 60 seconds timeout which causing system hang for 60s before the USB host reset the port for the USB3 removable hard disk to recover. Fix this by always calling usb_port_suspend() during freeze for USB3 devices. Signed-off-by: Zhengjun Xing Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/generic.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 83c14dda6300..bc8242bc4564 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -210,8 +210,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg) if (!udev->parent) rc = hcd_bus_suspend(udev, msg); - /* Non-root devices don't need to do anything for FREEZE or PRETHAW */ - else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW) + /* + * Non-root USB2 devices don't need to do anything for FREEZE + * or PRETHAW. USB3 devices don't support global suspend and + * needs to be selectively suspended. + */ + else if ((msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW) + && (udev->speed < USB_SPEED_SUPER)) rc = 0; else rc = usb_port_suspend(udev, msg); -- cgit v1.2.1 From 73c6d3b284cf7b31c03fdaa2476f48f8da0932f8 Mon Sep 17 00:00:00 2001 From: Benson Leung Date: Sat, 24 Mar 2018 10:40:27 -0700 Subject: USB: announce bcdDevice as well as idVendor, idProduct. Print bcdDevice which is used by vendors to identify different versions of the same product (or different versions of firmware). Adding this to the logs will be useful for support purposes. Match the %2x.%02x formatting that's used by lsusb -v for this same value. Signed-off-by: Benson Leung Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 793eda1cfe49..f6ea16e9f6bb 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2192,9 +2192,13 @@ static void show_string(struct usb_device *udev, char *id, char *string) static void announce_device(struct usb_device *udev) { - dev_info(&udev->dev, "New USB device found, idVendor=%04x, idProduct=%04x\n", + u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); + + dev_info(&udev->dev, + "New USB device found, idVendor=%04x, idProduct=%04x, bcdDevice=%2x.%02x\n", le16_to_cpu(udev->descriptor.idVendor), - le16_to_cpu(udev->descriptor.idProduct)); + le16_to_cpu(udev->descriptor.idProduct), + bcdDevice >> 8, bcdDevice & 0xff); dev_info(&udev->dev, "New USB device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", udev->descriptor.iManufacturer, -- cgit v1.2.1 From a030501499b032bd218e1d01c07677bab6a0d53f Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Sat, 24 Mar 2018 03:26:35 +0800 Subject: usb: core: Copy parameter string correctly and remove superfluous null check strsep() slices string, so the string gets copied by param_set_copystring() at the end of quirks_param_set() is not the original value. Fix that by calling param_set_copystring() earlier. The null check for val is unnecessary, the caller of quirks_param_set() does not pass null string. Remove the superfluous null check. This is found by Smatch. Fixes: 027bd6cafd9a ("usb: core: Add "quirks" parameter for usbcore") Cc: Dan Carpenter Signed-off-by: Kai-Heng Feng Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/quirks.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 6fb8d5433268..29e5f32b38df 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -31,10 +31,15 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp) u16 vid, pid; u32 flags; size_t i; + int err; + + err = param_set_copystring(val, kp); + if (err) + return err; mutex_lock(&quirk_mutex); - if (!val || !*val) { + if (!*val) { quirk_count = 0; kfree(quirk_list); quirk_list = NULL; @@ -133,7 +138,7 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp) unlock: mutex_unlock(&quirk_mutex); - return param_set_copystring(val, kp); + return 0; } static const struct kernel_param_ops quirks_param_ops = { -- cgit v1.2.1 From 4d8d5a392ae110d9b5889afd2b4beef9a09e712d Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Sat, 24 Mar 2018 03:26:36 +0800 Subject: usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks There's a new quirk, USB_QUIRK_DELAY_CTRL_MSG. Add it to usbcore quirks for completeness. Signed-off-by: Kai-Heng Feng Signed-off-by: Greg Kroah-Hartman --- Documentation/admin-guide/kernel-parameters.txt | 4 +++- drivers/usb/core/quirks.c | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index e00cdd313dc2..372d48326b1d 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4421,7 +4421,9 @@ calculation); m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs to be disconnected before suspend to - prevent spurious wakeup) + prevent spurious wakeup); + n = USB_QUIRK_DELAY_CTRL_MSG (Device needs a + pause after every control message); Example: quirks=0781:5580:bk,0a5c:5834:gij usbhid.mousepoll= diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 29e5f32b38df..920f48a49a87 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -124,6 +124,9 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp) case 'm': flags |= USB_QUIRK_DISCONNECT_SUSPEND; break; + case 'n': + flags |= USB_QUIRK_DELAY_CTRL_MSG; + break; /* Ignore unrecognized flag characters */ } } -- cgit v1.2.1 From 7fafcfdf6377b18b2a726ea554d6e593ba44349f Mon Sep 17 00:00:00 2001 From: "Yavuz, Tuba" Date: Fri, 23 Mar 2018 17:00:38 +0000 Subject: USB: gadget: f_midi: fixing a possible double-free in f_midi It looks like there is a possibility of a double-free vulnerability on an error path of the f_midi_set_alt function in the f_midi driver. If the path is feasible then free_ep_req gets called twice: req->complete = f_midi_complete; err = usb_ep_queue(midi->out_ep, req, GFP_ATOMIC); => ... usb_gadget_giveback_request => f_midi_complete (CALLBACK) (inside f_midi_complete, for various cases of status) free_ep_req(ep, req); // first kfree if (err) { ERROR(midi, "%s: couldn't enqueue request: %d\n", midi->out_ep->name, err); free_ep_req(midi->out_ep, req); // second kfree return err; } The double-free possibility was introduced with commit ad0d1a058eac ("usb: gadget: f_midi: fix leak on failed to enqueue out requests"). Found by MOXCAFE tool. Signed-off-by: Tuba Yavuz Fixes: ad0d1a058eac ("usb: gadget: f_midi: fix leak on failed to enqueue out requests") Acked-by: Felipe Balbi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/f_midi.c | 3 ++- drivers/usb/gadget/u_f.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 4eb96b91cc40..e8f35db42394 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -404,7 +404,8 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (err) { ERROR(midi, "%s: couldn't enqueue request: %d\n", midi->out_ep->name, err); - free_ep_req(midi->out_ep, req); + if (req->buf != NULL) + free_ep_req(midi->out_ep, req); return err; } } diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h index c3fbef2bb5db..09f90447fed5 100644 --- a/drivers/usb/gadget/u_f.h +++ b/drivers/usb/gadget/u_f.h @@ -61,7 +61,9 @@ struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len); /* Frees a usb_request previously allocated by alloc_ep_req() */ static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req) { + WARN_ON(req->buf == NULL); kfree(req->buf); + req->buf = NULL; usb_ep_free_request(ep, req); } -- cgit v1.2.1 From 97eba3260e7c4e65e1c085301c2330110bd6aa2b Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 26 Mar 2018 06:43:57 +0000 Subject: usb: roles: Fix return value check in intel_xhci_usb_probe() In case of error, the function devm_ioremap_nocache() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: f6fb9ec02be1 ("usb: roles: Add Intel xHCI USB role switch driver") Signed-off-by: Wei Yongjun Reviewed-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/roles/intel-xhci-usb-role-switch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c index 58c1b60a33c1..de72eedb762e 100644 --- a/drivers/usb/roles/intel-xhci-usb-role-switch.c +++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c @@ -145,8 +145,8 @@ static int intel_xhci_usb_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); data->base = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(data->base)) - return PTR_ERR(data->base); + if (!data->base) + return -ENOMEM; for (i = 0; i < ARRAY_SIZE(allow_userspace_ctrl_ids); i++) if (acpi_dev_present(allow_userspace_ctrl_ids[i].hid, "1", -- cgit v1.2.1 From 53d473fc1e38751b5369373423d58c86a3444b3b Mon Sep 17 00:00:00 2001 From: Alban Bedel Date: Sat, 24 Mar 2018 23:47:22 +0100 Subject: usb: host: Remove the deprecated ATH79 USB host config options The options USB_EHCI_ATH79 and USB_OHCI_ATH79 only enable the generic EHCI and OHCI platform drivers, and have been marked as deprecated since 2012. These can be safely removed if we make sure that USB_EHCI_ROOT_HUB_TT still get enabled for the EHCI driver. This is now done be selecting this option when the EHCI platform driver is enabled on the ATH79 platform. Signed-off-by: Alban Bedel Signed-off-by: Greg Kroah-Hartman --- arch/mips/Kconfig | 1 + drivers/usb/host/Kconfig | 25 ------------------------- 2 files changed, 1 insertion(+), 25 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 8128c3b68d6b..61e9a24297b7 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -200,6 +200,7 @@ config ATH79 select SYS_SUPPORTS_MIPS16 select SYS_SUPPORTS_ZBOOT_UART_PROM select USE_OF + select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM help Support for the Atheros AR71XX/AR724X/AR913X SoCs. diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 4fcfb3084b36..55b45dcd7a4b 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -293,19 +293,6 @@ config USB_CNS3XXX_EHCI It is needed for high-speed (480Mbit/sec) USB 2.0 device support. -config USB_EHCI_ATH79 - bool "EHCI support for AR7XXX/AR9XXX SoCs (DEPRECATED)" - depends on (SOC_AR71XX || SOC_AR724X || SOC_AR913X || SOC_AR933X) - select USB_EHCI_ROOT_HUB_TT - select USB_EHCI_HCD_PLATFORM - default y - ---help--- - This option is deprecated now and the driver was removed, use - USB_EHCI_HCD_PLATFORM instead. - - Enables support for the built-in EHCI controller present - on the Atheros AR7XXX/AR9XXX SoCs. - config USB_EHCI_HCD_PLATFORM tristate "Generic EHCI driver for a platform device" default n @@ -489,18 +476,6 @@ config USB_OHCI_HCD_DAVINCI controller. This driver cannot currently be a loadable module because it lacks a proper PHY abstraction. -config USB_OHCI_ATH79 - bool "USB OHCI support for the Atheros AR71XX/AR7240 SoCs (DEPRECATED)" - depends on (SOC_AR71XX || SOC_AR724X) - select USB_OHCI_HCD_PLATFORM - default y - help - This option is deprecated now and the driver was removed, use - USB_OHCI_HCD_PLATFORM instead. - - Enables support for the built-in OHCI controller present on the - Atheros AR71XX/AR7240 SoCs. - config USB_OHCI_HCD_PPC_OF_BE bool "OHCI support for OF platform bus (big endian)" depends on PPC -- cgit v1.2.1 From eaa358c7790338d83bb6a31258bdc077de120414 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 26 Mar 2018 13:14:46 +0300 Subject: usb: gadget: udc: core: update usb_ep_queue() documentation Mention that ->complete() should never be called from within usb_ep_queue(). Signed-off-by: Felipe Balbi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 50988b21a21b..842814bc0e4f 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -238,6 +238,9 @@ EXPORT_SYMBOL_GPL(usb_ep_free_request); * arranges to poll once per interval, and the gadget driver usually will * have queued some data to transfer at that time. * + * Note that @req's ->complete() callback must never be called from + * within usb_ep_queue() as that can create deadlock situations. + * * Returns zero, or a negative error code. Endpoints that are not enabled * report errors; errors will also be * reported when the usb peripheral is disconnected. -- cgit v1.2.1 From c91815b596245fd7da349ecc43c8def670d2269e Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 26 Mar 2018 13:14:47 +0300 Subject: usb: dwc3: gadget: never call ->complete() from ->ep_queue() This is a requirement which has always existed but, somehow, wasn't reflected in the documentation and problems weren't found until now when Tuba Yavuz found a possible deadlock happening between dwc3 and f_hid. She described the situation as follows: spin_lock_irqsave(&hidg->write_spinlock, flags); // first acquire /* we our function has been disabled by host */ if (!hidg->req) { free_ep_req(hidg->in_ep, hidg->req); goto try_again; } [...] status = usb_ep_queue(hidg->in_ep, hidg->req, GFP_ATOMIC); => [...] => usb_gadget_giveback_request => f_hidg_req_complete => spin_lock_irqsave(&hidg->write_spinlock, flags); // second acquire Note that this happens because dwc3 would call ->complete() on a failed usb_ep_queue() due to failed Start Transfer command. This is, anyway, a theoretical situation because dwc3 currently uses "No Response Update Transfer" command for Bulk and Interrupt endpoints. It's still good to make this case impossible to happen even if the "No Reponse Update Transfer" command is changed. Reported-by: Tuba Yavuz Signed-off-by: Felipe Balbi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/gadget.c | 43 +++++++++++++++++++++++++------------------ 1 file changed, 25 insertions(+), 18 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 550ee952c0d1..8796a5ee9bb9 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -166,18 +166,8 @@ static void dwc3_ep_inc_deq(struct dwc3_ep *dep) dwc3_ep_inc_trb(&dep->trb_dequeue); } -/** - * dwc3_gadget_giveback - call struct usb_request's ->complete callback - * @dep: The endpoint to whom the request belongs to - * @req: The request we're giving back - * @status: completion code for the request - * - * Must be called with controller's lock held and interrupts disabled. This - * function will unmap @req and call its ->complete() callback to notify upper - * layers that it has completed. - */ -void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, - int status) +void dwc3_gadget_del_and_unmap_request(struct dwc3_ep *dep, + struct dwc3_request *req, int status) { struct dwc3 *dwc = dep->dwc; @@ -190,18 +180,35 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, if (req->trb) usb_gadget_unmap_request_by_dev(dwc->sysdev, - &req->request, req->direction); + &req->request, req->direction); req->trb = NULL; - trace_dwc3_gadget_giveback(req); + if (dep->number > 1) + pm_runtime_put(dwc->dev); +} + +/** + * dwc3_gadget_giveback - call struct usb_request's ->complete callback + * @dep: The endpoint to whom the request belongs to + * @req: The request we're giving back + * @status: completion code for the request + * + * Must be called with controller's lock held and interrupts disabled. This + * function will unmap @req and call its ->complete() callback to notify upper + * layers that it has completed. + */ +void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, + int status) +{ + struct dwc3 *dwc = dep->dwc; + + dwc3_gadget_del_and_unmap_request(dep, req, status); + spin_unlock(&dwc->lock); usb_gadget_giveback_request(&dep->endpoint, &req->request); spin_lock(&dwc->lock); - - if (dep->number > 1) - pm_runtime_put(dwc->dev); } /** @@ -1227,7 +1234,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep) if (req->trb) memset(req->trb, 0, sizeof(struct dwc3_trb)); dep->queued_requests--; - dwc3_gadget_giveback(dep, req, ret); + dwc3_gadget_del_and_unmap_request(dep, req, ret); return ret; } -- cgit v1.2.1 From 79a0b33165d8d8ec0840fcfc74fd0a8f219abeee Mon Sep 17 00:00:00 2001 From: "Teichmann, Martin" Date: Thu, 29 Mar 2018 08:39:37 +0200 Subject: USB: serial: ftdi_sio: add Id for Physik Instrumente E-870 This adds support for the Physik Instrumente E-870 PIShift Drive Electronics, a Piezo motor driver. Signed-off-by: Martin Teichmann Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index f58c4ff6b387..85774cf4cc8f 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -893,6 +893,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(PI_VID, PI_1014_PID) }, { USB_DEVICE(PI_VID, PI_1015_PID) }, { USB_DEVICE(PI_VID, PI_1016_PID) }, + { USB_DEVICE(PI_VID, PI_E870_PID) }, { USB_DEVICE(KONDO_VID, KONDO_USB_SERIAL_PID) }, { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) }, { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID), diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 8b4ecd2bd297..14dff44a2a93 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -978,6 +978,7 @@ #define PI_1014_PID 0x1014 /* PI Device */ #define PI_1015_PID 0x1015 /* PI Device */ #define PI_1016_PID 0x1016 /* PI Digital Servo Module */ +#define PI_E870_PID 0x1019 /* PI E-870 Piezomotor Controller */ /* * Kondo Kagaku Co.Ltd. -- cgit v1.2.1 From 9618d0934980c4b0d8d4b455ef10ba6b435e52c8 Mon Sep 17 00:00:00 2001 From: Michael Trimarchi Date: Thu, 29 Mar 2018 17:52:45 +0800 Subject: usb: chipidea: usbmisc: evdo is only specific to OTG port The USB_PHY_CTRL_FUNC is used specific for OTG port as described in user manual. EVDO need to be set only for index 0 that correspond to OTG port Signed-off-by: Michael Trimarchi Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/usbmisc_imx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 8cdf0af156c6..a52f5a86f177 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -148,6 +148,9 @@ static int usbmisc_imx25_post(struct imx_usbmisc_data *data) if (data->index > 2) return -EINVAL; + if (data->index) + return 0; + if (data->evdo) { spin_lock_irqsave(&usbmisc->lock, flags); reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; -- cgit v1.2.1 From 26250d540d2baf32e265e9e6df120b9be5962587 Mon Sep 17 00:00:00 2001 From: Michael Trimarchi Date: Thu, 29 Mar 2018 17:52:46 +0800 Subject: usb: chipidea: usbmisc: evdo can be set e/o reset evdo bit can be set or reset. We can not trust evdo bit status after bootloader stage Signed-off-by: Michael Trimarchi Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/usbmisc_imx.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index a52f5a86f177..1f47ef625069 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -151,14 +151,18 @@ static int usbmisc_imx25_post(struct imx_usbmisc_data *data) if (data->index) return 0; - if (data->evdo) { - spin_lock_irqsave(&usbmisc->lock, flags); - reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; - val = readl(reg); - writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg); - spin_unlock_irqrestore(&usbmisc->lock, flags); - usleep_range(5000, 10000); /* needed to stabilize voltage */ - } + spin_lock_irqsave(&usbmisc->lock, flags); + reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; + val = readl(reg); + + if (data->evdo) + val |= MX25_BM_EXTERNAL_VBUS_DIVIDER; + else + val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER; + + writel(val, reg); + spin_unlock_irqrestore(&usbmisc->lock, flags); + usleep_range(5000, 10000); /* needed to stabilize voltage */ return 0; } -- cgit v1.2.1 From 274a1874bd7966eeb80b1a217b4e627e45c5fc73 Mon Sep 17 00:00:00 2001 From: Michael Trimarchi Date: Thu, 29 Mar 2018 17:52:47 +0800 Subject: usb: chipidea: usbmisc: small clean up The register write can be done outside the if and else condition Signed-off-by: Michael Trimarchi Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/usbmisc_imx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 1f47ef625069..34ad5bf8acd8 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -315,13 +315,12 @@ static int usbmisc_imx6q_set_wakeup val = readl(usbmisc->base + data->index * 4); if (enabled) { val |= wakeup_setting; - writel(val, usbmisc->base + data->index * 4); } else { if (val & MX6_BM_WAKEUP_INTR) pr_debug("wakeup int at ci_hdrc.%d\n", data->index); val &= ~wakeup_setting; - writel(val, usbmisc->base + data->index * 4); } + writel(val, usbmisc->base + data->index * 4); spin_unlock_irqrestore(&usbmisc->lock, flags); return ret; -- cgit v1.2.1 From 04e163794b07bbbd581604bed57ff876e835fd51 Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Thu, 29 Mar 2018 17:52:48 +0800 Subject: usb: chipidea: imx: Cleanup ci_hdrc_imx_platform_flag Some trivial cleanups, that do not change functionality. Signed-off-by: Sebastian Reichel Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 3b45c25f296e..de155c80eb70 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -20,7 +20,6 @@ struct ci_hdrc_imx_platform_flag { unsigned int flags; - bool runtime_pm; }; static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { @@ -29,7 +28,7 @@ static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { }; static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { - CI_HDRC_DISABLE_STREAMING, + .flags = CI_HDRC_DISABLE_STREAMING, }; static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { -- cgit v1.2.1 From be9cae2479f48d18f7a449ba91677ae97df11f3e Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Thu, 29 Mar 2018 17:52:49 +0800 Subject: usb: chipidea: imx: Fix ULPI on imx53 Traditionally, PORTSC should be set before initializing ULPI phys. But setting PORTSC before powering on the phy results in a kernel freeze on imx53 based GE PPD. As a workaround this initializes the phy early in the imx platform code and disables phy power management from the core. Signed-off-by: Fabien Lahoudere Signed-off-by: Sebastian Reichel Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index de155c80eb70..e431c5aafe35 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -83,6 +83,7 @@ struct ci_hdrc_imx_data { struct clk *clk; struct imx_usbmisc_data *usbmisc_data; bool supports_runtime_pm; + bool override_phy_control; bool in_lpm; /* SoC before i.mx6 (except imx23/imx28) needs three clks */ bool need_three_clks; @@ -254,6 +255,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) int ret; const struct of_device_id *of_id; const struct ci_hdrc_imx_platform_flag *imx_platform_flag; + struct device_node *np = pdev->dev.of_node; of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); if (!of_id) @@ -288,6 +290,14 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) } pdata.usb_phy = data->phy; + + if (of_device_is_compatible(np, "fsl,imx53-usb") && pdata.usb_phy && + of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) { + pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL; + data->override_phy_control = true; + usb_phy_init(pdata.usb_phy); + } + pdata.flags |= imx_platform_flag->flags; if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) data->supports_runtime_pm = true; @@ -341,6 +351,8 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); } ci_hdrc_remove_device(data->ci_pdev); + if (data->override_phy_control) + usb_phy_shutdown(data->phy); imx_disable_unprepare_clks(&pdev->dev); return 0; -- cgit v1.2.1 From af6f8529098aeb0e56a68671b450cf74e7a64fcd Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Thu, 29 Mar 2018 10:48:28 -0500 Subject: usb: musb: gadget: misplaced out of bounds check musb->endpoints[] has array size MUSB_C_NUM_EPS. We must check array bounds before accessing the array and not afterwards. Signed-off-by: Heinrich Schuchardt Signed-off-by: Bin Liu Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_gadget_ep0.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 18da4873e52e..91a5027b5c1f 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -89,15 +89,19 @@ static int service_tx_status_request( } is_in = epnum & USB_DIR_IN; - if (is_in) { - epnum &= 0x0f; + epnum &= 0x0f; + if (epnum >= MUSB_C_NUM_EPS) { + handled = -EINVAL; + break; + } + + if (is_in) ep = &musb->endpoints[epnum].ep_in; - } else { + else ep = &musb->endpoints[epnum].ep_out; - } regs = musb->endpoints[epnum].regs; - if (epnum >= MUSB_C_NUM_EPS || !ep->desc) { + if (!ep->desc) { handled = -EINVAL; break; } -- cgit v1.2.1 From 5267c5e09c25e2ee6242b37833a9bdf9d97f54a2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 29 Mar 2018 14:35:40 +0200 Subject: Revert "USB: serial: ftdi_sio: add Id for Physik Instrumente E-870" This reverts commit 79a0b33165d8d8ec0840fcfc74fd0a8f219abeee. Turns out this is not an FTDI device after all. Fixes: 79a0b33165d8 ("USB: serial: ftdi_sio: add Id for Physik Instrumente E-870") Reported-by: Martin Teichmann Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 - drivers/usb/serial/ftdi_sio_ids.h | 1 - 2 files changed, 2 deletions(-) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 566f25781ea0..87202ad5a50d 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -894,7 +894,6 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(PI_VID, PI_1014_PID) }, { USB_DEVICE(PI_VID, PI_1015_PID) }, { USB_DEVICE(PI_VID, PI_1016_PID) }, - { USB_DEVICE(PI_VID, PI_E870_PID) }, { USB_DEVICE(KONDO_VID, KONDO_USB_SERIAL_PID) }, { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) }, { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID), diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index f7790758de7c..975d02666c5a 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -981,7 +981,6 @@ #define PI_1014_PID 0x1014 /* PI Device */ #define PI_1015_PID 0x1015 /* PI Device */ #define PI_1016_PID 0x1016 /* PI Digital Servo Module */ -#define PI_E870_PID 0x1019 /* PI E-870 Piezomotor Controller */ /* * Kondo Kagaku Co.Ltd. -- cgit v1.2.1