Merge tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY driver updates from Greg KH:
 "Here is the large USB and PHY driver update for 4.14-rc1.

  Not all that exciting, a few new PHY drivers, the usual mess of gadget
  driver updates and fixes, and of course, xhci updates to try to tame
  that beast.

  A number of usb-serial updates and other small fixes all over the USB
  driver tree are in here as well. Full details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (171 commits)
  usbip: vhci-hcd: make vhci_hc_driver const
  usb: phy: Avoid unchecked dereference warning
  usb: imx21-hcd: make imx21_hc_driver const
  usb: host: make ehci_fsl_overrides const and __initconst
  dt-bindings: mt8173-mtu3: add generic compatible and rename file
  dt-bindings: mt8173-xhci: add generic compatible and rename file
  usb: xhci-mtk: add generic compatible string
  usbip: auto retry for concurrent attach
  USB: serial: option: simplify 3 D-Link device entries
  USB: serial: option: add support for D-Link DWM-157 C1
  usb: core: usbport: fix "BUG: key not in .data" when lockdep is enabled
  usb: chipidea: usb2: check memory allocation failure
  usb: Add device quirk for Logitech HD Pro Webcam C920-C
  usb: misc: lvstest: add entry to place port in compliance mode
  usb: xhci: Support enabling of compliance mode for xhci 1.1
  usb:xhci:Fix regression when ATI chipsets detected
  usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard
  usb: gadget: make snd_pcm_hardware const
  usb: common: use of_property_read_bool()
  USB: core: constify vm_operations_struct
  ...

1 files changed, 38 insertions, 2 deletions

diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index 07278228214b..198bc188ab25 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -13,13 +13,15 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/usb/phy.h>
+#include <linux/sys_soc.h>
 
 #include "xhci.h"
 #include "xhci-plat.h"
 #include "xhci-rcar.h"
 
 /*
-* - The V3 firmware is for r8a7796 (with good performance).
+* - The V3 firmware is for r8a7796 (with good performance) and r8a7795 es2.0
+*   or later.
 * - The V2 firmware can be used on both r8a7795 (es1.x) and r8a7796.
 * - The V2 firmware is possible to use on R-Car Gen2. However, the V2 causes
 *   performance degradation. So, this driver continues to use the V1 if R-Car
@@ -67,6 +69,26 @@ MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V3);
 #define RCAR_USB3_RX_POL_VAL	BIT(21)
 #define RCAR_USB3_TX_POL_VAL	BIT(4)
 
+/* For soc_device_attribute */
+#define RCAR_XHCI_FIRMWARE_V2   BIT(0) /* FIRMWARE V2 */
+#define RCAR_XHCI_FIRMWARE_V3   BIT(1) /* FIRMWARE V3 */
+
+static const struct soc_device_attribute rcar_quirks_match[]  = {
+	{
+		.soc_id = "r8a7795", .revision = "ES1.*",
+		.data = (void *)RCAR_XHCI_FIRMWARE_V2,
+	},
+	{
+		.soc_id = "r8a7795",
+		.data = (void *)RCAR_XHCI_FIRMWARE_V3,
+	},
+	{
+		.soc_id = "r8a7796",
+		.data = (void *)RCAR_XHCI_FIRMWARE_V3,
+	},
+	{ /* sentinel */ },
+};
+
 static void xhci_rcar_start_gen2(struct usb_hcd *hcd)
 {
 	/* LCLK Select */
@@ -122,9 +144,23 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
 	int retval, index, j, time;
 	int timeout = 10000;
 	u32 data, val, temp;
+	u32 quirks = 0;
+	const struct soc_device_attribute *attr;
+	const char *firmware_name;
+
+	attr = soc_device_match(rcar_quirks_match);
+	if (attr)
+		quirks = (uintptr_t)attr->data;
+
+	if (quirks & RCAR_XHCI_FIRMWARE_V2)
+		firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2;
+	else if (quirks & RCAR_XHCI_FIRMWARE_V3)
+		firmware_name = XHCI_RCAR_FIRMWARE_NAME_V3;
+	else
+		firmware_name = priv->firmware_name;
 
 	/* request R-Car USB3.0 firmware */
-	retval = request_firmware(&fw, priv->firmware_name, dev);
+	retval = request_firmware(&fw, firmware_name, dev);
 	if (retval)
 		return retval;