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, 616 deletions

diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c
deleted file mode 100644
index a98ff98fa56..00000000000
--- a/drivers/mmc/pxamci.c
+++ /dev/null
@@ -1,616 +0,0 @@
-/*
- *  linux/drivers/mmc/pxa.c - PXA MMCI driver
- *
- *  Copyright (C) 2003 Russell King, 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.
- *
- *  This hardware is really sick:
- *   - No way to clear interrupts.
- *   - Have to turn off the clock whenever we touch the device.
- *   - Doesn't tell you how many data blocks were transferred.
- *  Yuck!
- *
- *	1 and 3 byte data transfers not supported
- *	max block length up to 1023
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/mmc/host.h>
-
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/scatterlist.h>
-#include <asm/sizes.h>
-
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/mmc.h>
-
-#include "pxamci.h"
-
-#define DRIVER_NAME	"pxa2xx-mci"
-
-#define NR_SG	1
-
-struct pxamci_host {
-	struct mmc_host		*mmc;
-	spinlock_t		lock;
-	struct resource		*res;
-	void __iomem		*base;
-	int			irq;
-	int			dma;
-	unsigned int		clkrt;
-	unsigned int		cmdat;
-	unsigned int		imask;
-	unsigned int		power_mode;
-	struct pxamci_platform_data *pdata;
-
-	struct mmc_request	*mrq;
-	struct mmc_command	*cmd;
-	struct mmc_data		*data;
-
-	dma_addr_t		sg_dma;
-	struct pxa_dma_desc	*sg_cpu;
-	unsigned int		dma_len;
-
-	unsigned int		dma_dir;
-};
-
-static void pxamci_stop_clock(struct pxamci_host *host)
-{
-	if (readl(host->base + MMC_STAT) & STAT_CLK_EN) {
-		unsigned long timeout = 10000;
-		unsigned int v;
-
-		writel(STOP_CLOCK, host->base + MMC_STRPCL);
-
-		do {
-			v = readl(host->base + MMC_STAT);
-			if (!(v & STAT_CLK_EN))
-				break;
-			udelay(1);
-		} while (timeout--);
-
-		if (v & STAT_CLK_EN)
-			dev_err(mmc_dev(host->mmc), "unable to stop clock\n");
-	}
-}
-
-static void pxamci_enable_irq(struct pxamci_host *host, unsigned int mask)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&host->lock, flags);
-	host->imask &= ~mask;
-	writel(host->imask, host->base + MMC_I_MASK);
-	spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&host->lock, flags);
-	host->imask |= mask;
-	writel(host->imask, host->base + MMC_I_MASK);
-	spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
-{
-	unsigned int nob = data->blocks;
-	unsigned long long clks;
-	unsigned int timeout;
-	u32 dcmd;
-	int i;
-
-	host->data = data;
-
-	if (data->flags & MMC_DATA_STREAM)
-		nob = 0xffff;
-
-	writel(nob, host->base + MMC_NOB);
-	writel(data->blksz, host->base + MMC_BLKLEN);
-
-	clks = (unsigned long long)data->timeout_ns * CLOCKRATE;
-	do_div(clks, 1000000000UL);
-	timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
-	writel((timeout + 255) / 256, host->base + MMC_RDTO);
-
-	if (data->flags & MMC_DATA_READ) {
-		host->dma_dir = DMA_FROM_DEVICE;
-		dcmd = DCMD_INCTRGADDR | DCMD_FLOWTRG;
-		DRCMRTXMMC = 0;
-		DRCMRRXMMC = host->dma | DRCMR_MAPVLD;
-	} else {
-		host->dma_dir = DMA_TO_DEVICE;
-		dcmd = DCMD_INCSRCADDR | DCMD_FLOWSRC;
-		DRCMRRXMMC = 0;
-		DRCMRTXMMC = host->dma | DRCMR_MAPVLD;
-	}
-
-	dcmd |= DCMD_BURST32 | DCMD_WIDTH1;
-
-	host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
-				   host->dma_dir);
-
-	for (i = 0; i < host->dma_len; i++) {
-		if (data->flags & MMC_DATA_READ) {
-			host->sg_cpu[i].dsadr = host->res->start + MMC_RXFIFO;
-			host->sg_cpu[i].dtadr = sg_dma_address(&data->sg[i]);
-		} else {
-			host->sg_cpu[i].dsadr = sg_dma_address(&data->sg[i]);
-			host->sg_cpu[i].dtadr = host->res->start + MMC_TXFIFO;
-		}
-		host->sg_cpu[i].dcmd = dcmd | sg_dma_len(&data->sg[i]);
-		host->sg_cpu[i].ddadr = host->sg_dma + (i + 1) *
-					sizeof(struct pxa_dma_desc);
-	}
-	host->sg_cpu[host->dma_len - 1].ddadr = DDADR_STOP;
-	wmb();
-
-	DDADR(host->dma) = host->sg_dma;
-	DCSR(host->dma) = DCSR_RUN;
-}
-
-static void pxamci_start_cmd(struct pxamci_host *host, struct mmc_command *cmd, unsigned int cmdat)
-{
-	WARN_ON(host->cmd != NULL);
-	host->cmd = cmd;
-
-	if (cmd->flags & MMC_RSP_BUSY)
-		cmdat |= CMDAT_BUSY;
-
-#define RSP_TYPE(x)	((x) & ~(MMC_RSP_BUSY|MMC_RSP_OPCODE))
-	switch (RSP_TYPE(mmc_resp_type(cmd))) {
-	case RSP_TYPE(MMC_RSP_R1): /* r1, r1b, r6, r7 */
-		cmdat |= CMDAT_RESP_SHORT;
-		break;
-	case RSP_TYPE(MMC_RSP_R3):
-		cmdat |= CMDAT_RESP_R3;
-		break;
-	case RSP_TYPE(MMC_RSP_R2):
-		cmdat |= CMDAT_RESP_R2;
-		break;
-	default:
-		break;
-	}
-
-	writel(cmd->opcode, host->base + MMC_CMD);
-	writel(cmd->arg >> 16, host->base + MMC_ARGH);
-	writel(cmd->arg & 0xffff, host->base + MMC_ARGL);
-	writel(cmdat, host->base + MMC_CMDAT);
-	writel(host->clkrt, host->base + MMC_CLKRT);
-
-	writel(START_CLOCK, host->base + MMC_STRPCL);
-
-	pxamci_enable_irq(host, END_CMD_RES);
-}
-
-static void pxamci_finish_request(struct pxamci_host *host, struct mmc_request *mrq)
-{
-	host->mrq = NULL;
-	host->cmd = NULL;
-	host->data = NULL;
-	mmc_request_done(host->mmc, mrq);
-}
-
-static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat)
-{
-	struct mmc_command *cmd = host->cmd;
-	int i;
-	u32 v;
-
-	if (!cmd)
-		return 0;
-
-	host->cmd = NULL;
-
-	/*
-	 * Did I mention this is Sick.  We always need to
-	 * discard the upper 8 bits of the first 16-bit word.
-	 */
-	v = readl(host->base + MMC_RES) & 0xffff;
-	for (i = 0; i < 4; i++) {
-		u32 w1 = readl(host->base + MMC_RES) & 0xffff;
-		u32 w2 = readl(host->base + MMC_RES) & 0xffff;
-		cmd->resp[i] = v << 24 | w1 << 8 | w2 >> 8;
-		v = w2;
-	}
-
-	if (stat & STAT_TIME_OUT_RESPONSE) {
-		cmd->error = MMC_ERR_TIMEOUT;
-	} else if (stat & STAT_RES_CRC_ERR && cmd->flags & MMC_RSP_CRC) {
-#ifdef CONFIG_PXA27x
-		/*
-		 * workaround for erratum #42:
-		 * Intel PXA27x Family Processor Specification Update Rev 001
-		 */
-		if (cmd->opcode == MMC_ALL_SEND_CID ||
-		    cmd->opcode == MMC_SEND_CSD ||
-		    cmd->opcode == MMC_SEND_CID) {
-			/* a bogus CRC error can appear if the msb of
-			   the 15 byte response is a one */
-			if ((cmd->resp[0] & 0x80000000) == 0)
-				cmd->error = MMC_ERR_BADCRC;
-		} else {
-			pr_debug("ignoring CRC from command %d - *risky*\n",cmd->opcode);
-		}
-#else
-		cmd->error = MMC_ERR_BADCRC;
-#endif
-	}
-
-	pxamci_disable_irq(host, END_CMD_RES);
-	if (host->data && cmd->error == MMC_ERR_NONE) {
-		pxamci_enable_irq(host, DATA_TRAN_DONE);
-	} else {
-		pxamci_finish_request(host, host->mrq);
-	}
-
-	return 1;
-}
-
-static int pxamci_data_done(struct pxamci_host *host, unsigned int stat)
-{
-	struct mmc_data *data = host->data;
-
-	if (!data)
-		return 0;
-
-	DCSR(host->dma) = 0;
-	dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len,
-		     host->dma_dir);
-
-	if (stat & STAT_READ_TIME_OUT)
-		data->error = MMC_ERR_TIMEOUT;
-	else if (stat & (STAT_CRC_READ_ERROR|STAT_CRC_WRITE_ERROR))
-		data->error = MMC_ERR_BADCRC;
-
-	/*
-	 * There appears to be a hardware design bug here.  There seems to
-	 * be no way to find out how much data was transferred to the card.
-	 * This means that if there was an error on any block, we mark all
-	 * data blocks as being in error.
-	 */
-	if (data->error == MMC_ERR_NONE)
-		data->bytes_xfered = data->blocks * data->blksz;
-	else
-		data->bytes_xfered = 0;
-
-	pxamci_disable_irq(host, DATA_TRAN_DONE);
-
-	host->data = NULL;
-	if (host->mrq->stop) {
-		pxamci_stop_clock(host);
-		pxamci_start_cmd(host, host->mrq->stop, 0);
-	} else {
-		pxamci_finish_request(host, host->mrq);
-	}
-
-	return 1;
-}
-
-static irqreturn_t pxamci_irq(int irq, void *devid)
-{
-	struct pxamci_host *host = devid;
-	unsigned int ireg;
-	int handled = 0;
-
-	ireg = readl(host->base + MMC_I_REG);
-
-	if (ireg) {
-		unsigned stat = readl(host->base + MMC_STAT);
-
-		pr_debug("PXAMCI: irq %08x stat %08x\n", ireg, stat);
-
-		if (ireg & END_CMD_RES)
-			handled |= pxamci_cmd_done(host, stat);
-		if (ireg & DATA_TRAN_DONE)
-			handled |= pxamci_data_done(host, stat);
-	}
-
-	return IRQ_RETVAL(handled);
-}
-
-static void pxamci_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
-	struct pxamci_host *host = mmc_priv(mmc);
-	unsigned int cmdat;
-
-	WARN_ON(host->mrq != NULL);
-
-	host->mrq = mrq;
-
-	pxamci_stop_clock(host);
-
-	cmdat = host->cmdat;
-	host->cmdat &= ~CMDAT_INIT;
-
-	if (mrq->data) {
-		pxamci_setup_data(host, mrq->data);
-
-		cmdat &= ~CMDAT_BUSY;
-		cmdat |= CMDAT_DATAEN | CMDAT_DMAEN;
-		if (mrq->data->flags & MMC_DATA_WRITE)
-			cmdat |= CMDAT_WRITE;
-
-		if (mrq->data->flags & MMC_DATA_STREAM)
-			cmdat |= CMDAT_STREAM;
-	}
-
-	pxamci_start_cmd(host, mrq->cmd, cmdat);
-}
-
-static int pxamci_get_ro(struct mmc_host *mmc)
-{
-	struct pxamci_host *host = mmc_priv(mmc);
-
-	if (host->pdata && host->pdata->get_ro)
-		return host->pdata->get_ro(mmc_dev(mmc));
-	/* Host doesn't support read only detection so assume writeable */
-	return 0;
-}
-
-static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
-	struct pxamci_host *host = mmc_priv(mmc);
-
-	if (ios->clock) {
-		unsigned int clk = CLOCKRATE / ios->clock;
-		if (CLOCKRATE / clk > ios->clock)
-			clk <<= 1;
-		host->clkrt = fls(clk) - 1;
-		pxa_set_cken(CKEN12_MMC, 1);
-
-		/*
-		 * we write clkrt on the next command
-		 */
-	} else {
-		pxamci_stop_clock(host);
-		pxa_set_cken(CKEN12_MMC, 0);
-	}
-
-	if (host->power_mode != ios->power_mode) {
-		host->power_mode = ios->power_mode;
-
-		if (host->pdata && host->pdata->setpower)
-			host->pdata->setpower(mmc_dev(mmc), ios->vdd);
-
-		if (ios->power_mode == MMC_POWER_ON)
-			host->cmdat |= CMDAT_INIT;
-	}
-
-	pr_debug("PXAMCI: clkrt = %x cmdat = %x\n",
-		 host->clkrt, host->cmdat);
-}
-
-static const struct mmc_host_ops pxamci_ops = {
-	.request	= pxamci_request,
-	.get_ro		= pxamci_get_ro,
-	.set_ios	= pxamci_set_ios,
-};
-
-static void pxamci_dma_irq(int dma, void *devid)
-{
-	printk(KERN_ERR "DMA%d: IRQ???\n", dma);
-	DCSR(dma) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR;
-}
-
-static irqreturn_t pxamci_detect_irq(int irq, void *devid)
-{
-	struct pxamci_host *host = mmc_priv(devid);
-
-	mmc_detect_change(devid, host->pdata->detect_delay);
-	return IRQ_HANDLED;
-}
-
-static int pxamci_probe(struct platform_device *pdev)
-{
-	struct mmc_host *mmc;
-	struct pxamci_host *host = NULL;
-	struct resource *r;
-	int ret, irq;
-
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(pdev, 0);
-	if (!r || irq < 0)
-		return -ENXIO;
-
-	r = request_mem_region(r->start, SZ_4K, DRIVER_NAME);
-	if (!r)
-		return -EBUSY;
-
-	mmc = mmc_alloc_host(sizeof(struct pxamci_host), &pdev->dev);
-	if (!mmc) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	mmc->ops = &pxamci_ops;
-	mmc->f_min = CLOCKRATE_MIN;
-	mmc->f_max = CLOCKRATE_MAX;
-
-	/*
-	 * We can do SG-DMA, but we don't because we never know how much
-	 * data we successfully wrote to the card.
-	 */
-	mmc->max_phys_segs = NR_SG;
-
-	/*
-	 * Our hardware DMA can handle a maximum of one page per SG entry.
-	 */
-	mmc->max_seg_size = PAGE_SIZE;
-
-	/*
-	 * Block length register is 10 bits.
-	 */
-	mmc->max_blk_size = 1023;
-
-	/*
-	 * Block count register is 16 bits.
-	 */
-	mmc->max_blk_count = 65535;
-
-	host = mmc_priv(mmc);
-	host->mmc = mmc;
-	host->dma = -1;
-	host->pdata = pdev->dev.platform_data;
-	mmc->ocr_avail = host->pdata ?
-			 host->pdata->ocr_mask :
-			 MMC_VDD_32_33|MMC_VDD_33_34;
-
-	host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
-	if (!host->sg_cpu) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	spin_lock_init(&host->lock);
-	host->res = r;
-	host->irq = irq;
-	host->imask = MMC_I_MASK_ALL;
-
-	host->base = ioremap(r->start, SZ_4K);
-	if (!host->base) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	/*
-	 * Ensure that the host controller is shut down, and setup
-	 * with our defaults.
-	 */
-	pxamci_stop_clock(host);
-	writel(0, host->base + MMC_SPI);
-	writel(64, host->base + MMC_RESTO);
-	writel(host->imask, host->base + MMC_I_MASK);
-
-	host->dma = pxa_request_dma(DRIVER_NAME, DMA_PRIO_LOW,
-				    pxamci_dma_irq, host);
-	if (host->dma < 0) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	ret = request_irq(host->irq, pxamci_irq, 0, DRIVER_NAME, host);
-	if (ret)
-		goto out;
-
-	platform_set_drvdata(pdev, mmc);
-
-	if (host->pdata && host->pdata->init)
-		host->pdata->init(&pdev->dev, pxamci_detect_irq, mmc);
-
-	mmc_add_host(mmc);
-
-	return 0;
-
- out:
-	if (host) {
-		if (host->dma >= 0)
-			pxa_free_dma(host->dma);
-		if (host->base)
-			iounmap(host->base);
-		if (host->sg_cpu)
-			dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
-	}
-	if (mmc)
-		mmc_free_host(mmc);
-	release_resource(r);
-	return ret;
-}
-
-static int pxamci_remove(struct platform_device *pdev)
-{
-	struct mmc_host *mmc = platform_get_drvdata(pdev);
-
-	platform_set_drvdata(pdev, NULL);
-
-	if (mmc) {
-		struct pxamci_host *host = mmc_priv(mmc);
-
-		if (host->pdata && host->pdata->exit)
-			host->pdata->exit(&pdev->dev, mmc);
-
-		mmc_remove_host(mmc);
-
-		pxamci_stop_clock(host);
-		writel(TXFIFO_WR_REQ|RXFIFO_RD_REQ|CLK_IS_OFF|STOP_CMD|
-		       END_CMD_RES|PRG_DONE|DATA_TRAN_DONE,
-		       host->base + MMC_I_MASK);
-
-		DRCMRRXMMC = 0;
-		DRCMRTXMMC = 0;
-
-		free_irq(host->irq, host);
-		pxa_free_dma(host->dma);
-		iounmap(host->base);
-		dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
-
-		release_resource(host->res);
-
-		mmc_free_host(mmc);
-	}
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int pxamci_suspend(struct platform_device *dev, pm_message_t state)
-{
-	struct mmc_host *mmc = platform_get_drvdata(dev);
-	int ret = 0;
-
-	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
-
-	return ret;
-}
-
-static int pxamci_resume(struct platform_device *dev)
-{
-	struct mmc_host *mmc = platform_get_drvdata(dev);
-	int ret = 0;
-
-	if (mmc)
-		ret = mmc_resume_host(mmc);
-
-	return ret;
-}
-#else
-#define pxamci_suspend	NULL
-#define pxamci_resume	NULL
-#endif
-
-static struct platform_driver pxamci_driver = {
-	.probe		= pxamci_probe,
-	.remove		= pxamci_remove,
-	.suspend	= pxamci_suspend,
-	.resume		= pxamci_resume,
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-};
-
-static int __init pxamci_init(void)
-{
-	return platform_driver_register(&pxamci_driver);
-}
-
-static void __exit pxamci_exit(void)
-{
-	platform_driver_unregister(&pxamci_driver);
-}
-
-module_init(pxamci_init);
-module_exit(pxamci_exit);
-
-MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver");
-MODULE_LICENSE("GPL");