mmc: Move host and card drivers to subdirs

Clean up the drivers/mmc directory by moving card and host drivers
into subdirectories.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 0 insertions, 702 deletions

diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c
deleted file mode 100644
index d11c2d23ceea..000000000000
--- a/drivers/mmc/mmci.c
+++ /dev/null
@@ -1,702 +0,0 @@
-/*
- *  linux/drivers/mmc/mmci.c - ARM PrimeCell MMCI PL180/1 driver
- *
- *  Copyright (C) 2003 Deep Blue Solutions, Ltd, 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 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/highmem.h>
-#include <linux/mmc/host.h>
-#include <linux/amba/bus.h>
-#include <linux/clk.h>
-
-#include <asm/cacheflush.h>
-#include <asm/div64.h>
-#include <asm/io.h>
-#include <asm/scatterlist.h>
-#include <asm/sizes.h>
-#include <asm/mach/mmc.h>
-
-#include "mmci.h"
-
-#define DRIVER_NAME "mmci-pl18x"
-
-#define DBG(host,fmt,args...)	\
-	pr_debug("%s: %s: " fmt, mmc_hostname(host->mmc), __func__ , args)
-
-static unsigned int fmax = 515633;
-
-static void
-mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
-{
-	writel(0, host->base + MMCICOMMAND);
-
-	BUG_ON(host->data);
-
-	host->mrq = NULL;
-	host->cmd = NULL;
-
-	if (mrq->data)
-		mrq->data->bytes_xfered = host->data_xfered;
-
-	/*
-	 * Need to drop the host lock here; mmc_request_done may call
-	 * back into the driver...
-	 */
-	spin_unlock(&host->lock);
-	mmc_request_done(host->mmc, mrq);
-	spin_lock(&host->lock);
-}
-
-static void mmci_stop_data(struct mmci_host *host)
-{
-	writel(0, host->base + MMCIDATACTRL);
-	writel(0, host->base + MMCIMASK1);
-	host->data = NULL;
-}
-
-static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
-{
-	unsigned int datactrl, timeout, irqmask;
-	unsigned long long clks;
-	void __iomem *base;
-	int blksz_bits;
-
-	DBG(host, "blksz %04x blks %04x flags %08x\n",
-	    data->blksz, data->blocks, data->flags);
-
-	host->data = data;
-	host->size = data->blksz;
-	host->data_xfered = 0;
-
-	mmci_init_sg(host, data);
-
-	clks = (unsigned long long)data->timeout_ns * host->cclk;
-	do_div(clks, 1000000000UL);
-
-	timeout = data->timeout_clks + (unsigned int)clks;
-
-	base = host->base;
-	writel(timeout, base + MMCIDATATIMER);
-	writel(host->size, base + MMCIDATALENGTH);
-
-	blksz_bits = ffs(data->blksz) - 1;
-	BUG_ON(1 << blksz_bits != data->blksz);
-
-	datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
-	if (data->flags & MMC_DATA_READ) {
-		datactrl |= MCI_DPSM_DIRECTION;
-		irqmask = MCI_RXFIFOHALFFULLMASK;
-
-		/*
-		 * If we have less than a FIFOSIZE of bytes to transfer,
-		 * trigger a PIO interrupt as soon as any data is available.
-		 */
-		if (host->size < MCI_FIFOSIZE)
-			irqmask |= MCI_RXDATAAVLBLMASK;
-	} else {
-		/*
-		 * We don't actually need to include "FIFO empty" here
-		 * since its implicit in "FIFO half empty".
-		 */
-		irqmask = MCI_TXFIFOHALFEMPTYMASK;
-	}
-
-	writel(datactrl, base + MMCIDATACTRL);
-	writel(readl(base + MMCIMASK0) & ~MCI_DATAENDMASK, base + MMCIMASK0);
-	writel(irqmask, base + MMCIMASK1);
-}
-
-static void
-mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
-{
-	void __iomem *base = host->base;
-
-	DBG(host, "op %02x arg %08x flags %08x\n",
-	    cmd->opcode, cmd->arg, cmd->flags);
-
-	if (readl(base + MMCICOMMAND) & MCI_CPSM_ENABLE) {
-		writel(0, base + MMCICOMMAND);
-		udelay(1);
-	}
-
-	c |= cmd->opcode | MCI_CPSM_ENABLE;
-	if (cmd->flags & MMC_RSP_PRESENT) {
-		if (cmd->flags & MMC_RSP_136)
-			c |= MCI_CPSM_LONGRSP;
-		c |= MCI_CPSM_RESPONSE;
-	}
-	if (/*interrupt*/0)
-		c |= MCI_CPSM_INTERRUPT;
-
-	host->cmd = cmd;
-
-	writel(cmd->arg, base + MMCIARGUMENT);
-	writel(c, base + MMCICOMMAND);
-}
-
-static void
-mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
-	      unsigned int status)
-{
-	if (status & MCI_DATABLOCKEND) {
-		host->data_xfered += data->blksz;
-	}
-	if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
-		if (status & MCI_DATACRCFAIL)
-			data->error = MMC_ERR_BADCRC;
-		else if (status & MCI_DATATIMEOUT)
-			data->error = MMC_ERR_TIMEOUT;
-		else if (status & (MCI_TXUNDERRUN|MCI_RXOVERRUN))
-			data->error = MMC_ERR_FIFO;
-		status |= MCI_DATAEND;
-
-		/*
-		 * We hit an error condition.  Ensure that any data
-		 * partially written to a page is properly coherent.
-		 */
-		if (host->sg_len && data->flags & MMC_DATA_READ)
-			flush_dcache_page(host->sg_ptr->page);
-	}
-	if (status & MCI_DATAEND) {
-		mmci_stop_data(host);
-
-		if (!data->stop) {
-			mmci_request_end(host, data->mrq);
-		} else {
-			mmci_start_command(host, data->stop, 0);
-		}
-	}
-}
-
-static void
-mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
-	     unsigned int status)
-{
-	void __iomem *base = host->base;
-
-	host->cmd = NULL;
-
-	cmd->resp[0] = readl(base + MMCIRESPONSE0);
-	cmd->resp[1] = readl(base + MMCIRESPONSE1);
-	cmd->resp[2] = readl(base + MMCIRESPONSE2);
-	cmd->resp[3] = readl(base + MMCIRESPONSE3);
-
-	if (status & MCI_CMDTIMEOUT) {
-		cmd->error = MMC_ERR_TIMEOUT;
-	} else if (status & MCI_CMDCRCFAIL && cmd->flags & MMC_RSP_CRC) {
-		cmd->error = MMC_ERR_BADCRC;
-	}
-
-	if (!cmd->data || cmd->error != MMC_ERR_NONE) {
-		if (host->data)
-			mmci_stop_data(host);
-		mmci_request_end(host, cmd->mrq);
-	} else if (!(cmd->data->flags & MMC_DATA_READ)) {
-		mmci_start_data(host, cmd->data);
-	}
-}
-
-static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int remain)
-{
-	void __iomem *base = host->base;
-	char *ptr = buffer;
-	u32 status;
-
-	do {
-		int count = host->size - (readl(base + MMCIFIFOCNT) << 2);
-
-		if (count > remain)
-			count = remain;
-
-		if (count <= 0)
-			break;
-
-		readsl(base + MMCIFIFO, ptr, count >> 2);
-
-		ptr += count;
-		remain -= count;
-
-		if (remain == 0)
-			break;
-
-		status = readl(base + MMCISTATUS);
-	} while (status & MCI_RXDATAAVLBL);
-
-	return ptr - buffer;
-}
-
-static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int remain, u32 status)
-{
-	void __iomem *base = host->base;
-	char *ptr = buffer;
-
-	do {
-		unsigned int count, maxcnt;
-
-		maxcnt = status & MCI_TXFIFOEMPTY ? MCI_FIFOSIZE : MCI_FIFOHALFSIZE;
-		count = min(remain, maxcnt);
-
-		writesl(base + MMCIFIFO, ptr, count >> 2);
-
-		ptr += count;
-		remain -= count;
-
-		if (remain == 0)
-			break;
-
-		status = readl(base + MMCISTATUS);
-	} while (status & MCI_TXFIFOHALFEMPTY);
-
-	return ptr - buffer;
-}
-
-/*
- * PIO data transfer IRQ handler.
- */
-static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
-{
-	struct mmci_host *host = dev_id;
-	void __iomem *base = host->base;
-	u32 status;
-
-	status = readl(base + MMCISTATUS);
-
-	DBG(host, "irq1 %08x\n", status);
-
-	do {
-		unsigned long flags;
-		unsigned int remain, len;
-		char *buffer;
-
-		/*
-		 * For write, we only need to test the half-empty flag
-		 * here - if the FIFO is completely empty, then by
-		 * definition it is more than half empty.
-		 *
-		 * For read, check for data available.
-		 */
-		if (!(status & (MCI_TXFIFOHALFEMPTY|MCI_RXDATAAVLBL)))
-			break;
-
-		/*
-		 * Map the current scatter buffer.
-		 */
-		buffer = mmci_kmap_atomic(host, &flags) + host->sg_off;
-		remain = host->sg_ptr->length - host->sg_off;
-
-		len = 0;
-		if (status & MCI_RXACTIVE)
-			len = mmci_pio_read(host, buffer, remain);
-		if (status & MCI_TXACTIVE)
-			len = mmci_pio_write(host, buffer, remain, status);
-
-		/*
-		 * Unmap the buffer.
-		 */
-		mmci_kunmap_atomic(host, buffer, &flags);
-
-		host->sg_off += len;
-		host->size -= len;
-		remain -= len;
-
-		if (remain)
-			break;
-
-		/*
-		 * If we were reading, and we have completed this
-		 * page, ensure that the data cache is coherent.
-		 */
-		if (status & MCI_RXACTIVE)
-			flush_dcache_page(host->sg_ptr->page);
-
-		if (!mmci_next_sg(host))
-			break;
-
-		status = readl(base + MMCISTATUS);
-	} while (1);
-
-	/*
-	 * If we're nearing the end of the read, switch to
-	 * "any data available" mode.
-	 */
-	if (status & MCI_RXACTIVE && host->size < MCI_FIFOSIZE)
-		writel(MCI_RXDATAAVLBLMASK, base + MMCIMASK1);
-
-	/*
-	 * If we run out of data, disable the data IRQs; this
-	 * prevents a race where the FIFO becomes empty before
-	 * the chip itself has disabled the data path, and
-	 * stops us racing with our data end IRQ.
-	 */
-	if (host->size == 0) {
-		writel(0, base + MMCIMASK1);
-		writel(readl(base + MMCIMASK0) | MCI_DATAENDMASK, base + MMCIMASK0);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/*
- * Handle completion of command and data transfers.
- */
-static irqreturn_t mmci_irq(int irq, void *dev_id)
-{
-	struct mmci_host *host = dev_id;
-	u32 status;
-	int ret = 0;
-
-	spin_lock(&host->lock);
-
-	do {
-		struct mmc_command *cmd;
-		struct mmc_data *data;
-
-		status = readl(host->base + MMCISTATUS);
-		status &= readl(host->base + MMCIMASK0);
-		writel(status, host->base + MMCICLEAR);
-
-		DBG(host, "irq0 %08x\n", status);
-
-		data = host->data;
-		if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|
-			      MCI_RXOVERRUN|MCI_DATAEND|MCI_DATABLOCKEND) && data)
-			mmci_data_irq(host, data, status);
-
-		cmd = host->cmd;
-		if (status & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT|MCI_CMDSENT|MCI_CMDRESPEND) && cmd)
-			mmci_cmd_irq(host, cmd, status);
-
-		ret = 1;
-	} while (status);
-
-	spin_unlock(&host->lock);
-
-	return IRQ_RETVAL(ret);
-}
-
-static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
-	struct mmci_host *host = mmc_priv(mmc);
-
-	WARN_ON(host->mrq != NULL);
-
-	spin_lock_irq(&host->lock);
-
-	host->mrq = mrq;
-
-	if (mrq->data && mrq->data->flags & MMC_DATA_READ)
-		mmci_start_data(host, mrq->data);
-
-	mmci_start_command(host, mrq->cmd, 0);
-
-	spin_unlock_irq(&host->lock);
-}
-
-static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
-	struct mmci_host *host = mmc_priv(mmc);
-	u32 clk = 0, pwr = 0;
-
-	if (ios->clock) {
-		if (ios->clock >= host->mclk) {
-			clk = MCI_CLK_BYPASS;
-			host->cclk = host->mclk;
-		} else {
-			clk = host->mclk / (2 * ios->clock) - 1;
-			if (clk > 256)
-				clk = 255;
-			host->cclk = host->mclk / (2 * (clk + 1));
-		}
-		clk |= MCI_CLK_ENABLE;
-	}
-
-	if (host->plat->translate_vdd)
-		pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd);
-
-	switch (ios->power_mode) {
-	case MMC_POWER_OFF:
-		break;
-	case MMC_POWER_UP:
-		pwr |= MCI_PWR_UP;
-		break;
-	case MMC_POWER_ON:
-		pwr |= MCI_PWR_ON;
-		break;
-	}
-
-	if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
-		pwr |= MCI_ROD;
-
-	writel(clk, host->base + MMCICLOCK);
-
-	if (host->pwr != pwr) {
-		host->pwr = pwr;
-		writel(pwr, host->base + MMCIPOWER);
-	}
-}
-
-static const struct mmc_host_ops mmci_ops = {
-	.request	= mmci_request,
-	.set_ios	= mmci_set_ios,
-};
-
-static void mmci_check_status(unsigned long data)
-{
-	struct mmci_host *host = (struct mmci_host *)data;
-	unsigned int status;
-
-	status = host->plat->status(mmc_dev(host->mmc));
-	if (status ^ host->oldstat)
-		mmc_detect_change(host->mmc, 0);
-
-	host->oldstat = status;
-	mod_timer(&host->timer, jiffies + HZ);
-}
-
-static int mmci_probe(struct amba_device *dev, void *id)
-{
-	struct mmc_platform_data *plat = dev->dev.platform_data;
-	struct mmci_host *host;
-	struct mmc_host *mmc;
-	int ret;
-
-	/* must have platform data */
-	if (!plat) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	ret = amba_request_regions(dev, DRIVER_NAME);
-	if (ret)
-		goto out;
-
-	mmc = mmc_alloc_host(sizeof(struct mmci_host), &dev->dev);
-	if (!mmc) {
-		ret = -ENOMEM;
-		goto rel_regions;
-	}
-
-	host = mmc_priv(mmc);
-	host->clk = clk_get(&dev->dev, "MCLK");
-	if (IS_ERR(host->clk)) {
-		ret = PTR_ERR(host->clk);
-		host->clk = NULL;
-		goto host_free;
-	}
-
-	ret = clk_enable(host->clk);
-	if (ret)
-		goto clk_free;
-
-	host->plat = plat;
-	host->mclk = clk_get_rate(host->clk);
-	host->mmc = mmc;
-	host->base = ioremap(dev->res.start, SZ_4K);
-	if (!host->base) {
-		ret = -ENOMEM;
-		goto clk_disable;
-	}
-
-	mmc->ops = &mmci_ops;
-	mmc->f_min = (host->mclk + 511) / 512;
-	mmc->f_max = min(host->mclk, fmax);
-	mmc->ocr_avail = plat->ocr_mask;
-	mmc->caps = MMC_CAP_MULTIWRITE;
-
-	/*
-	 * We can do SGIO
-	 */
-	mmc->max_hw_segs = 16;
-	mmc->max_phys_segs = NR_SG;
-
-	/*
-	 * Since we only have a 16-bit data length register, we must
-	 * ensure that we don't exceed 2^16-1 bytes in a single request.
-	 */
-	mmc->max_req_size = 65535;
-
-	/*
-	 * Set the maximum segment size.  Since we aren't doing DMA
-	 * (yet) we are only limited by the data length register.
-	 */
-	mmc->max_seg_size = mmc->max_req_size;
-
-	/*
-	 * Block size can be up to 2048 bytes, but must be a power of two.
-	 */
-	mmc->max_blk_size = 2048;
-
-	/*
-	 * No limit on the number of blocks transferred.
-	 */
-	mmc->max_blk_count = mmc->max_req_size;
-
-	spin_lock_init(&host->lock);
-
-	writel(0, host->base + MMCIMASK0);
-	writel(0, host->base + MMCIMASK1);
-	writel(0xfff, host->base + MMCICLEAR);
-
-	ret = request_irq(dev->irq[0], mmci_irq, IRQF_SHARED, DRIVER_NAME " (cmd)", host);
-	if (ret)
-		goto unmap;
-
-	ret = request_irq(dev->irq[1], mmci_pio_irq, IRQF_SHARED, DRIVER_NAME " (pio)", host);
-	if (ret)
-		goto irq0_free;
-
-	writel(MCI_IRQENABLE, host->base + MMCIMASK0);
-
-	amba_set_drvdata(dev, mmc);
-
-	mmc_add_host(mmc);
-
-	printk(KERN_INFO "%s: MMCI rev %x cfg %02x at 0x%016llx irq %d,%d\n",
-		mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
-		(unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);
-
-	init_timer(&host->timer);
-	host->timer.data = (unsigned long)host;
-	host->timer.function = mmci_check_status;
-	host->timer.expires = jiffies + HZ;
-	add_timer(&host->timer);
-
-	return 0;
-
- irq0_free:
-	free_irq(dev->irq[0], host);
- unmap:
-	iounmap(host->base);
- clk_disable:
-	clk_disable(host->clk);
- clk_free:
-	clk_put(host->clk);
- host_free:
-	mmc_free_host(mmc);
- rel_regions:
-	amba_release_regions(dev);
- out:
-	return ret;
-}
-
-static int mmci_remove(struct amba_device *dev)
-{
-	struct mmc_host *mmc = amba_get_drvdata(dev);
-
-	amba_set_drvdata(dev, NULL);
-
-	if (mmc) {
-		struct mmci_host *host = mmc_priv(mmc);
-
-		del_timer_sync(&host->timer);
-
-		mmc_remove_host(mmc);
-
-		writel(0, host->base + MMCIMASK0);
-		writel(0, host->base + MMCIMASK1);
-
-		writel(0, host->base + MMCICOMMAND);
-		writel(0, host->base + MMCIDATACTRL);
-
-		free_irq(dev->irq[0], host);
-		free_irq(dev->irq[1], host);
-
-		iounmap(host->base);
-		clk_disable(host->clk);
-		clk_put(host->clk);
-
-		mmc_free_host(mmc);
-
-		amba_release_regions(dev);
-	}
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int mmci_suspend(struct amba_device *dev, pm_message_t state)
-{
-	struct mmc_host *mmc = amba_get_drvdata(dev);
-	int ret = 0;
-
-	if (mmc) {
-		struct mmci_host *host = mmc_priv(mmc);
-
-		ret = mmc_suspend_host(mmc, state);
-		if (ret == 0)
-			writel(0, host->base + MMCIMASK0);
-	}
-
-	return ret;
-}
-
-static int mmci_resume(struct amba_device *dev)
-{
-	struct mmc_host *mmc = amba_get_drvdata(dev);
-	int ret = 0;
-
-	if (mmc) {
-		struct mmci_host *host = mmc_priv(mmc);
-
-		writel(MCI_IRQENABLE, host->base + MMCIMASK0);
-
-		ret = mmc_resume_host(mmc);
-	}
-
-	return ret;
-}
-#else
-#define mmci_suspend	NULL
-#define mmci_resume	NULL
-#endif
-
-static struct amba_id mmci_ids[] = {
-	{
-		.id	= 0x00041180,
-		.mask	= 0x000fffff,
-	},
-	{
-		.id	= 0x00041181,
-		.mask	= 0x000fffff,
-	},
-	{ 0, 0 },
-};
-
-static struct amba_driver mmci_driver = {
-	.drv		= {
-		.name	= DRIVER_NAME,
-	},
-	.probe		= mmci_probe,
-	.remove		= mmci_remove,
-	.suspend	= mmci_suspend,
-	.resume		= mmci_resume,
-	.id_table	= mmci_ids,
-};
-
-static int __init mmci_init(void)
-{
-	return amba_driver_register(&mmci_driver);
-}
-
-static void __exit mmci_exit(void)
-{
-	amba_driver_unregister(&mmci_driver);
-}
-
-module_init(mmci_init);
-module_exit(mmci_exit);
-module_param(fmax, uint, 0444);
-
-MODULE_DESCRIPTION("ARM PrimeCell PL180/181 Multimedia Card Interface driver");
-MODULE_LICENSE("GPL");