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, 1288 deletions

diff --git a/drivers/mmc/omap.c b/drivers/mmc/omap.c
deleted file mode 100644
index e851384e51f4..000000000000
--- a/drivers/mmc/omap.c
+++ /dev/null
@@ -1,1288 +0,0 @@
-/*
- *  linux/drivers/media/mmc/omap.c
- *
- *  Copyright (C) 2004 Nokia Corporation
- *  Written by Tuukka Tikkanen and Juha Yrjölä<juha.yrjola@nokia.com>
- *  Misc hacks here and there by Tony Lindgren <tony@atomide.com>
- *  Other hacks (DMA, SD, etc) by David Brownell
- *
- * 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/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/timer.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/card.h>
-#include <linux/clk.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/scatterlist.h>
-#include <asm/mach-types.h>
-
-#include <asm/arch/board.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/dma.h>
-#include <asm/arch/mux.h>
-#include <asm/arch/fpga.h>
-#include <asm/arch/tps65010.h>
-
-#define	OMAP_MMC_REG_CMD	0x00
-#define	OMAP_MMC_REG_ARGL	0x04
-#define	OMAP_MMC_REG_ARGH	0x08
-#define	OMAP_MMC_REG_CON	0x0c
-#define	OMAP_MMC_REG_STAT	0x10
-#define	OMAP_MMC_REG_IE		0x14
-#define	OMAP_MMC_REG_CTO	0x18
-#define	OMAP_MMC_REG_DTO	0x1c
-#define	OMAP_MMC_REG_DATA	0x20
-#define	OMAP_MMC_REG_BLEN	0x24
-#define	OMAP_MMC_REG_NBLK	0x28
-#define	OMAP_MMC_REG_BUF	0x2c
-#define OMAP_MMC_REG_SDIO	0x34
-#define	OMAP_MMC_REG_REV	0x3c
-#define	OMAP_MMC_REG_RSP0	0x40
-#define	OMAP_MMC_REG_RSP1	0x44
-#define	OMAP_MMC_REG_RSP2	0x48
-#define	OMAP_MMC_REG_RSP3	0x4c
-#define	OMAP_MMC_REG_RSP4	0x50
-#define	OMAP_MMC_REG_RSP5	0x54
-#define	OMAP_MMC_REG_RSP6	0x58
-#define	OMAP_MMC_REG_RSP7	0x5c
-#define	OMAP_MMC_REG_IOSR	0x60
-#define	OMAP_MMC_REG_SYSC	0x64
-#define	OMAP_MMC_REG_SYSS	0x68
-
-#define	OMAP_MMC_STAT_CARD_ERR		(1 << 14)
-#define	OMAP_MMC_STAT_CARD_IRQ		(1 << 13)
-#define	OMAP_MMC_STAT_OCR_BUSY		(1 << 12)
-#define	OMAP_MMC_STAT_A_EMPTY		(1 << 11)
-#define	OMAP_MMC_STAT_A_FULL		(1 << 10)
-#define	OMAP_MMC_STAT_CMD_CRC		(1 <<  8)
-#define	OMAP_MMC_STAT_CMD_TOUT		(1 <<  7)
-#define	OMAP_MMC_STAT_DATA_CRC		(1 <<  6)
-#define	OMAP_MMC_STAT_DATA_TOUT		(1 <<  5)
-#define	OMAP_MMC_STAT_END_BUSY		(1 <<  4)
-#define	OMAP_MMC_STAT_END_OF_DATA	(1 <<  3)
-#define	OMAP_MMC_STAT_CARD_BUSY		(1 <<  2)
-#define	OMAP_MMC_STAT_END_OF_CMD	(1 <<  0)
-
-#define OMAP_MMC_READ(host, reg)	__raw_readw((host)->virt_base + OMAP_MMC_REG_##reg)
-#define OMAP_MMC_WRITE(host, reg, val)	__raw_writew((val), (host)->virt_base + OMAP_MMC_REG_##reg)
-
-/*
- * Command types
- */
-#define OMAP_MMC_CMDTYPE_BC	0
-#define OMAP_MMC_CMDTYPE_BCR	1
-#define OMAP_MMC_CMDTYPE_AC	2
-#define OMAP_MMC_CMDTYPE_ADTC	3
-
-
-#define DRIVER_NAME "mmci-omap"
-
-/* Specifies how often in millisecs to poll for card status changes
- * when the cover switch is open */
-#define OMAP_MMC_SWITCH_POLL_DELAY	500
-
-static int mmc_omap_enable_poll = 1;
-
-struct mmc_omap_host {
-	int			initialized;
-	int			suspended;
-	struct mmc_request *	mrq;
-	struct mmc_command *	cmd;
-	struct mmc_data *	data;
-	struct mmc_host *	mmc;
-	struct device *		dev;
-	unsigned char		id; /* 16xx chips have 2 MMC blocks */
-	struct clk *		iclk;
-	struct clk *		fclk;
-	struct resource		*mem_res;
-	void __iomem		*virt_base;
-	unsigned int		phys_base;
-	int			irq;
-	unsigned char		bus_mode;
-	unsigned char		hw_bus_mode;
-
-	unsigned int		sg_len;
-	int			sg_idx;
-	u16 *			buffer;
-	u32			buffer_bytes_left;
-	u32			total_bytes_left;
-
-	unsigned		use_dma:1;
-	unsigned		brs_received:1, dma_done:1;
-	unsigned		dma_is_read:1;
-	unsigned		dma_in_use:1;
-	int			dma_ch;
-	spinlock_t		dma_lock;
-	struct timer_list	dma_timer;
-	unsigned		dma_len;
-
-	short			power_pin;
-	short			wp_pin;
-
-	int			switch_pin;
-	struct work_struct	switch_work;
-	struct timer_list	switch_timer;
-	int			switch_last_state;
-};
-
-static inline int
-mmc_omap_cover_is_open(struct mmc_omap_host *host)
-{
-	if (host->switch_pin < 0)
-		return 0;
-	return omap_get_gpio_datain(host->switch_pin);
-}
-
-static ssize_t
-mmc_omap_show_cover_switch(struct device *dev,
-	struct device_attribute *attr, char *buf)
-{
-	struct mmc_omap_host *host = dev_get_drvdata(dev);
-
-	return sprintf(buf, "%s\n", mmc_omap_cover_is_open(host) ? "open" :
-			"closed");
-}
-
-static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL);
-
-static ssize_t
-mmc_omap_show_enable_poll(struct device *dev,
-	struct device_attribute *attr, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%d\n", mmc_omap_enable_poll);
-}
-
-static ssize_t
-mmc_omap_store_enable_poll(struct device *dev,
-	struct device_attribute *attr, const char *buf,
-	size_t size)
-{
-	int enable_poll;
-
-	if (sscanf(buf, "%10d", &enable_poll) != 1)
-		return -EINVAL;
-
-	if (enable_poll != mmc_omap_enable_poll) {
-		struct mmc_omap_host *host = dev_get_drvdata(dev);
-
-		mmc_omap_enable_poll = enable_poll;
-		if (enable_poll && host->switch_pin >= 0)
-			schedule_work(&host->switch_work);
-	}
-	return size;
-}
-
-static DEVICE_ATTR(enable_poll, 0664,
-		   mmc_omap_show_enable_poll, mmc_omap_store_enable_poll);
-
-static void
-mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd)
-{
-	u32 cmdreg;
-	u32 resptype;
-	u32 cmdtype;
-
-	host->cmd = cmd;
-
-	resptype = 0;
-	cmdtype = 0;
-
-	/* Our hardware needs to know exact type */
-	switch (mmc_resp_type(cmd)) {
-	case MMC_RSP_NONE:
-		break;
-	case MMC_RSP_R1:
-	case MMC_RSP_R1B:
-		/* resp 1, 1b, 6, 7 */
-		resptype = 1;
-		break;
-	case MMC_RSP_R2:
-		resptype = 2;
-		break;
-	case MMC_RSP_R3:
-		resptype = 3;
-		break;
-	default:
-		dev_err(mmc_dev(host->mmc), "Invalid response type: %04x\n", mmc_resp_type(cmd));
-		break;
-	}
-
-	if (mmc_cmd_type(cmd) == MMC_CMD_ADTC) {
-		cmdtype = OMAP_MMC_CMDTYPE_ADTC;
-	} else if (mmc_cmd_type(cmd) == MMC_CMD_BC) {
-		cmdtype = OMAP_MMC_CMDTYPE_BC;
-	} else if (mmc_cmd_type(cmd) == MMC_CMD_BCR) {
-		cmdtype = OMAP_MMC_CMDTYPE_BCR;
-	} else {
-		cmdtype = OMAP_MMC_CMDTYPE_AC;
-	}
-
-	cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12);
-
-	if (host->bus_mode == MMC_BUSMODE_OPENDRAIN)
-		cmdreg |= 1 << 6;
-
-	if (cmd->flags & MMC_RSP_BUSY)
-		cmdreg |= 1 << 11;
-
-	if (host->data && !(host->data->flags & MMC_DATA_WRITE))
-		cmdreg |= 1 << 15;
-
-	clk_enable(host->fclk);
-
-	OMAP_MMC_WRITE(host, CTO, 200);
-	OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff);
-	OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16);
-	OMAP_MMC_WRITE(host, IE,
-		       OMAP_MMC_STAT_A_EMPTY    | OMAP_MMC_STAT_A_FULL    |
-		       OMAP_MMC_STAT_CMD_CRC    | OMAP_MMC_STAT_CMD_TOUT  |
-		       OMAP_MMC_STAT_DATA_CRC   | OMAP_MMC_STAT_DATA_TOUT |
-		       OMAP_MMC_STAT_END_OF_CMD | OMAP_MMC_STAT_CARD_ERR  |
-		       OMAP_MMC_STAT_END_OF_DATA);
-	OMAP_MMC_WRITE(host, CMD, cmdreg);
-}
-
-static void
-mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data)
-{
-	if (host->dma_in_use) {
-		enum dma_data_direction dma_data_dir;
-
-		BUG_ON(host->dma_ch < 0);
-		if (data->error != MMC_ERR_NONE)
-			omap_stop_dma(host->dma_ch);
-		/* Release DMA channel lazily */
-		mod_timer(&host->dma_timer, jiffies + HZ);
-		if (data->flags & MMC_DATA_WRITE)
-			dma_data_dir = DMA_TO_DEVICE;
-		else
-			dma_data_dir = DMA_FROM_DEVICE;
-		dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
-			     dma_data_dir);
-	}
-	host->data = NULL;
-	host->sg_len = 0;
-	clk_disable(host->fclk);
-
-	/* NOTE:  MMC layer will sometimes poll-wait CMD13 next, issuing
-	 * dozens of requests until the card finishes writing data.
-	 * It'd be cheaper to just wait till an EOFB interrupt arrives...
-	 */
-
-	if (!data->stop) {
-		host->mrq = NULL;
-		mmc_request_done(host->mmc, data->mrq);
-		return;
-	}
-
-	mmc_omap_start_command(host, data->stop);
-}
-
-static void
-mmc_omap_end_of_data(struct mmc_omap_host *host, struct mmc_data *data)
-{
-	unsigned long flags;
-	int done;
-
-	if (!host->dma_in_use) {
-		mmc_omap_xfer_done(host, data);
-		return;
-	}
-	done = 0;
-	spin_lock_irqsave(&host->dma_lock, flags);
-	if (host->dma_done)
-		done = 1;
-	else
-		host->brs_received = 1;
-	spin_unlock_irqrestore(&host->dma_lock, flags);
-	if (done)
-		mmc_omap_xfer_done(host, data);
-}
-
-static void
-mmc_omap_dma_timer(unsigned long data)
-{
-	struct mmc_omap_host *host = (struct mmc_omap_host *) data;
-
-	BUG_ON(host->dma_ch < 0);
-	omap_free_dma(host->dma_ch);
-	host->dma_ch = -1;
-}
-
-static void
-mmc_omap_dma_done(struct mmc_omap_host *host, struct mmc_data *data)
-{
-	unsigned long flags;
-	int done;
-
-	done = 0;
-	spin_lock_irqsave(&host->dma_lock, flags);
-	if (host->brs_received)
-		done = 1;
-	else
-		host->dma_done = 1;
-	spin_unlock_irqrestore(&host->dma_lock, flags);
-	if (done)
-		mmc_omap_xfer_done(host, data);
-}
-
-static void
-mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd)
-{
-	host->cmd = NULL;
-
-	if (cmd->flags & MMC_RSP_PRESENT) {
-		if (cmd->flags & MMC_RSP_136) {
-			/* response type 2 */
-			cmd->resp[3] =
-				OMAP_MMC_READ(host, RSP0) |
-				(OMAP_MMC_READ(host, RSP1) << 16);
-			cmd->resp[2] =
-				OMAP_MMC_READ(host, RSP2) |
-				(OMAP_MMC_READ(host, RSP3) << 16);
-			cmd->resp[1] =
-				OMAP_MMC_READ(host, RSP4) |
-				(OMAP_MMC_READ(host, RSP5) << 16);
-			cmd->resp[0] =
-				OMAP_MMC_READ(host, RSP6) |
-				(OMAP_MMC_READ(host, RSP7) << 16);
-		} else {
-			/* response types 1, 1b, 3, 4, 5, 6 */
-			cmd->resp[0] =
-				OMAP_MMC_READ(host, RSP6) |
-				(OMAP_MMC_READ(host, RSP7) << 16);
-		}
-	}
-
-	if (host->data == NULL || cmd->error != MMC_ERR_NONE) {
-		host->mrq = NULL;
-		clk_disable(host->fclk);
-		mmc_request_done(host->mmc, cmd->mrq);
-	}
-}
-
-/* PIO only */
-static void
-mmc_omap_sg_to_buf(struct mmc_omap_host *host)
-{
-	struct scatterlist *sg;
-
-	sg = host->data->sg + host->sg_idx;
-	host->buffer_bytes_left = sg->length;
-	host->buffer = page_address(sg->page) + sg->offset;
-	if (host->buffer_bytes_left > host->total_bytes_left)
-		host->buffer_bytes_left = host->total_bytes_left;
-}
-
-/* PIO only */
-static void
-mmc_omap_xfer_data(struct mmc_omap_host *host, int write)
-{
-	int n;
-
-	if (host->buffer_bytes_left == 0) {
-		host->sg_idx++;
-		BUG_ON(host->sg_idx == host->sg_len);
-		mmc_omap_sg_to_buf(host);
-	}
-	n = 64;
-	if (n > host->buffer_bytes_left)
-		n = host->buffer_bytes_left;
-	host->buffer_bytes_left -= n;
-	host->total_bytes_left -= n;
-	host->data->bytes_xfered += n;
-
-	if (write) {
-		__raw_writesw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n);
-	} else {
-		__raw_readsw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n);
-	}
-}
-
-static inline void mmc_omap_report_irq(u16 status)
-{
-	static const char *mmc_omap_status_bits[] = {
-		"EOC", "CD", "CB", "BRS", "EOFB", "DTO", "DCRC", "CTO",
-		"CCRC", "CRW", "AF", "AE", "OCRB", "CIRQ", "CERR"
-	};
-	int i, c = 0;
-
-	for (i = 0; i < ARRAY_SIZE(mmc_omap_status_bits); i++)
-		if (status & (1 << i)) {
-			if (c)
-				printk(" ");
-			printk("%s", mmc_omap_status_bits[i]);
-			c++;
-		}
-}
-
-static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
-{
-	struct mmc_omap_host * host = (struct mmc_omap_host *)dev_id;
-	u16 status;
-	int end_command;
-	int end_transfer;
-	int transfer_error;
-
-	if (host->cmd == NULL && host->data == NULL) {
-		status = OMAP_MMC_READ(host, STAT);
-		dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status);
-		if (status != 0) {
-			OMAP_MMC_WRITE(host, STAT, status);
-			OMAP_MMC_WRITE(host, IE, 0);
-		}
-		return IRQ_HANDLED;
-	}
-
-	end_command = 0;
-	end_transfer = 0;
-	transfer_error = 0;
-
-	while ((status = OMAP_MMC_READ(host, STAT)) != 0) {
-		OMAP_MMC_WRITE(host, STAT, status);
-#ifdef CONFIG_MMC_DEBUG
-		dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ",
-			status, host->cmd != NULL ? host->cmd->opcode : -1);
-		mmc_omap_report_irq(status);
-		printk("\n");
-#endif
-		if (host->total_bytes_left) {
-			if ((status & OMAP_MMC_STAT_A_FULL) ||
-			    (status & OMAP_MMC_STAT_END_OF_DATA))
-				mmc_omap_xfer_data(host, 0);
-			if (status & OMAP_MMC_STAT_A_EMPTY)
-				mmc_omap_xfer_data(host, 1);
-		}
-
-		if (status & OMAP_MMC_STAT_END_OF_DATA) {
-			end_transfer = 1;
-		}
-
-		if (status & OMAP_MMC_STAT_DATA_TOUT) {
-			dev_dbg(mmc_dev(host->mmc), "data timeout\n");
-			if (host->data) {
-				host->data->error |= MMC_ERR_TIMEOUT;
-				transfer_error = 1;
-			}
-		}
-
-		if (status & OMAP_MMC_STAT_DATA_CRC) {
-			if (host->data) {
-				host->data->error |= MMC_ERR_BADCRC;
-				dev_dbg(mmc_dev(host->mmc),
-					 "data CRC error, bytes left %d\n",
-					host->total_bytes_left);
-				transfer_error = 1;
-			} else {
-				dev_dbg(mmc_dev(host->mmc), "data CRC error\n");
-			}
-		}
-
-		if (status & OMAP_MMC_STAT_CMD_TOUT) {
-			/* Timeouts are routine with some commands */
-			if (host->cmd) {
-				if (host->cmd->opcode != MMC_ALL_SEND_CID &&
-						host->cmd->opcode !=
-						MMC_SEND_OP_COND &&
-						host->cmd->opcode !=
-						MMC_APP_CMD &&
-						!mmc_omap_cover_is_open(host))
-					dev_err(mmc_dev(host->mmc),
-						"command timeout, CMD %d\n",
-						host->cmd->opcode);
-				host->cmd->error = MMC_ERR_TIMEOUT;
-				end_command = 1;
-			}
-		}
-
-		if (status & OMAP_MMC_STAT_CMD_CRC) {
-			if (host->cmd) {
-				dev_err(mmc_dev(host->mmc),
-					"command CRC error (CMD%d, arg 0x%08x)\n",
-					host->cmd->opcode, host->cmd->arg);
-				host->cmd->error = MMC_ERR_BADCRC;
-				end_command = 1;
-			} else
-				dev_err(mmc_dev(host->mmc),
-					"command CRC error without cmd?\n");
-		}
-
-		if (status & OMAP_MMC_STAT_CARD_ERR) {
-			if (host->cmd && host->cmd->opcode == MMC_STOP_TRANSMISSION) {
-				u32 response = OMAP_MMC_READ(host, RSP6)
-					| (OMAP_MMC_READ(host, RSP7) << 16);
-				/* STOP sometimes sets must-ignore bits */
-				if (!(response & (R1_CC_ERROR
-								| R1_ILLEGAL_COMMAND
-								| R1_COM_CRC_ERROR))) {
-					end_command = 1;
-					continue;
-				}
-			}
-
-			dev_dbg(mmc_dev(host->mmc), "card status error (CMD%d)\n",
-				host->cmd->opcode);
-			if (host->cmd) {
-				host->cmd->error = MMC_ERR_FAILED;
-				end_command = 1;
-			}
-			if (host->data) {
-				host->data->error = MMC_ERR_FAILED;
-				transfer_error = 1;
-			}
-		}
-
-		/*
-		 * NOTE: On 1610 the END_OF_CMD may come too early when
-		 * starting a write 
-		 */
-		if ((status & OMAP_MMC_STAT_END_OF_CMD) &&
-		    (!(status & OMAP_MMC_STAT_A_EMPTY))) {
-			end_command = 1;
-		}
-	}
-
-	if (end_command) {
-		mmc_omap_cmd_done(host, host->cmd);
-	}
-	if (transfer_error)
-		mmc_omap_xfer_done(host, host->data);
-	else if (end_transfer)
-		mmc_omap_end_of_data(host, host->data);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t mmc_omap_switch_irq(int irq, void *dev_id)
-{
-	struct mmc_omap_host *host = (struct mmc_omap_host *) dev_id;
-
-	schedule_work(&host->switch_work);
-
-	return IRQ_HANDLED;
-}
-
-static void mmc_omap_switch_timer(unsigned long arg)
-{
-	struct mmc_omap_host *host = (struct mmc_omap_host *) arg;
-
-	schedule_work(&host->switch_work);
-}
-
-static void mmc_omap_switch_handler(struct work_struct *work)
-{
-	struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, switch_work);
-	struct mmc_card *card;
-	static int complained = 0;
-	int cards = 0, cover_open;
-
-	if (host->switch_pin == -1)
-		return;
-	cover_open = mmc_omap_cover_is_open(host);
-	if (cover_open != host->switch_last_state) {
-		kobject_uevent(&host->dev->kobj, KOBJ_CHANGE);
-		host->switch_last_state = cover_open;
-	}
-	mmc_detect_change(host->mmc, 0);
-	list_for_each_entry(card, &host->mmc->cards, node) {
-		if (mmc_card_present(card))
-			cards++;
-	}
-	if (mmc_omap_cover_is_open(host)) {
-		if (!complained) {
-			dev_info(mmc_dev(host->mmc), "cover is open");
-			complained = 1;
-		}
-		if (mmc_omap_enable_poll)
-			mod_timer(&host->switch_timer, jiffies +
-				msecs_to_jiffies(OMAP_MMC_SWITCH_POLL_DELAY));
-	} else {
-		complained = 0;
-	}
-}
-
-/* Prepare to transfer the next segment of a scatterlist */
-static void
-mmc_omap_prepare_dma(struct mmc_omap_host *host, struct mmc_data *data)
-{
-	int dma_ch = host->dma_ch;
-	unsigned long data_addr;
-	u16 buf, frame;
-	u32 count;
-	struct scatterlist *sg = &data->sg[host->sg_idx];
-	int src_port = 0;
-	int dst_port = 0;
-	int sync_dev = 0;
-
-	data_addr = host->phys_base + OMAP_MMC_REG_DATA;
-	frame = data->blksz;
-	count = sg_dma_len(sg);
-
-	if ((data->blocks == 1) && (count > data->blksz))
-		count = frame;
-
-	host->dma_len = count;
-
-	/* FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx and 24xx.
-	 * Use 16 or 32 word frames when the blocksize is at least that large.
-	 * Blocksize is usually 512 bytes; but not for some SD reads.
-	 */
-	if (cpu_is_omap15xx() && frame > 32)
-		frame = 32;
-	else if (frame > 64)
-		frame = 64;
-	count /= frame;
-	frame >>= 1;
-
-	if (!(data->flags & MMC_DATA_WRITE)) {
-		buf = 0x800f | ((frame - 1) << 8);
-
-		if (cpu_class_is_omap1()) {
-			src_port = OMAP_DMA_PORT_TIPB;
-			dst_port = OMAP_DMA_PORT_EMIFF;
-		}
-		if (cpu_is_omap24xx())
-			sync_dev = OMAP24XX_DMA_MMC1_RX;
-
-		omap_set_dma_src_params(dma_ch, src_port,
-					OMAP_DMA_AMODE_CONSTANT,
-					data_addr, 0, 0);
-		omap_set_dma_dest_params(dma_ch, dst_port,
-					 OMAP_DMA_AMODE_POST_INC,
-					 sg_dma_address(sg), 0, 0);
-		omap_set_dma_dest_data_pack(dma_ch, 1);
-		omap_set_dma_dest_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
-	} else {
-		buf = 0x0f80 | ((frame - 1) << 0);
-
-		if (cpu_class_is_omap1()) {
-			src_port = OMAP_DMA_PORT_EMIFF;
-			dst_port = OMAP_DMA_PORT_TIPB;
-		}
-		if (cpu_is_omap24xx())
-			sync_dev = OMAP24XX_DMA_MMC1_TX;
-
-		omap_set_dma_dest_params(dma_ch, dst_port,
-					 OMAP_DMA_AMODE_CONSTANT,
-					 data_addr, 0, 0);
-		omap_set_dma_src_params(dma_ch, src_port,
-					OMAP_DMA_AMODE_POST_INC,
-					sg_dma_address(sg), 0, 0);
-		omap_set_dma_src_data_pack(dma_ch, 1);
-		omap_set_dma_src_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
-	}
-
-	/* Max limit for DMA frame count is 0xffff */
-	BUG_ON(count > 0xffff);
-
-	OMAP_MMC_WRITE(host, BUF, buf);
-	omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S16,
-				     frame, count, OMAP_DMA_SYNC_FRAME,
-				     sync_dev, 0);
-}
-
-/* A scatterlist segment completed */
-static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data)
-{
-	struct mmc_omap_host *host = (struct mmc_omap_host *) data;
-	struct mmc_data *mmcdat = host->data;
-
-	if (unlikely(host->dma_ch < 0)) {
-		dev_err(mmc_dev(host->mmc),
-			"DMA callback while DMA not enabled\n");
-		return;
-	}
-	/* FIXME: We really should do something to _handle_ the errors */
-	if (ch_status & OMAP1_DMA_TOUT_IRQ) {
-		dev_err(mmc_dev(host->mmc),"DMA timeout\n");
-		return;
-	}
-	if (ch_status & OMAP_DMA_DROP_IRQ) {
-		dev_err(mmc_dev(host->mmc), "DMA sync error\n");
-		return;
-	}
-	if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
-		return;
-	}
-	mmcdat->bytes_xfered += host->dma_len;
-	host->sg_idx++;
-	if (host->sg_idx < host->sg_len) {
-		mmc_omap_prepare_dma(host, host->data);
-		omap_start_dma(host->dma_ch);
-	} else
-		mmc_omap_dma_done(host, host->data);
-}
-
-static int mmc_omap_get_dma_channel(struct mmc_omap_host *host, struct mmc_data *data)
-{
-	const char *dev_name;
-	int sync_dev, dma_ch, is_read, r;
-
-	is_read = !(data->flags & MMC_DATA_WRITE);
-	del_timer_sync(&host->dma_timer);
-	if (host->dma_ch >= 0) {
-		if (is_read == host->dma_is_read)
-			return 0;
-		omap_free_dma(host->dma_ch);
-		host->dma_ch = -1;
-	}
-
-	if (is_read) {
-		if (host->id == 1) {
-			sync_dev = OMAP_DMA_MMC_RX;
-			dev_name = "MMC1 read";
-		} else {
-			sync_dev = OMAP_DMA_MMC2_RX;
-			dev_name = "MMC2 read";
-		}
-	} else {
-		if (host->id == 1) {
-			sync_dev = OMAP_DMA_MMC_TX;
-			dev_name = "MMC1 write";
-		} else {
-			sync_dev = OMAP_DMA_MMC2_TX;
-			dev_name = "MMC2 write";
-		}
-	}
-	r = omap_request_dma(sync_dev, dev_name, mmc_omap_dma_cb,
-			     host, &dma_ch);
-	if (r != 0) {
-		dev_dbg(mmc_dev(host->mmc), "omap_request_dma() failed with %d\n", r);
-		return r;
-	}
-	host->dma_ch = dma_ch;
-	host->dma_is_read = is_read;
-
-	return 0;
-}
-
-static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_request *req)
-{
-	u16 reg;
-
-	reg = OMAP_MMC_READ(host, SDIO);
-	reg &= ~(1 << 5);
-	OMAP_MMC_WRITE(host, SDIO, reg);
-	/* Set maximum timeout */
-	OMAP_MMC_WRITE(host, CTO, 0xff);
-}
-
-static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)
-{
-	int timeout;
-	u16 reg;
-
-	/* Convert ns to clock cycles by assuming 20MHz frequency
-	 * 1 cycle at 20MHz = 500 ns
-	 */
-	timeout = req->data->timeout_clks + req->data->timeout_ns / 500;
-
-	/* Check if we need to use timeout multiplier register */
-	reg = OMAP_MMC_READ(host, SDIO);
-	if (timeout > 0xffff) {
-		reg |= (1 << 5);
-		timeout /= 1024;
-	} else
-		reg &= ~(1 << 5);
-	OMAP_MMC_WRITE(host, SDIO, reg);
-	OMAP_MMC_WRITE(host, DTO, timeout);
-}
-
-static void
-mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
-{
-	struct mmc_data *data = req->data;
-	int i, use_dma, block_size;
-	unsigned sg_len;
-
-	host->data = data;
-	if (data == NULL) {
-		OMAP_MMC_WRITE(host, BLEN, 0);
-		OMAP_MMC_WRITE(host, NBLK, 0);
-		OMAP_MMC_WRITE(host, BUF, 0);
-		host->dma_in_use = 0;
-		set_cmd_timeout(host, req);
-		return;
-	}
-
-	block_size = data->blksz;
-
-	OMAP_MMC_WRITE(host, NBLK, data->blocks - 1);
-	OMAP_MMC_WRITE(host, BLEN, block_size - 1);
-	set_data_timeout(host, req);
-
-	/* cope with calling layer confusion; it issues "single
-	 * block" writes using multi-block scatterlists.
-	 */
-	sg_len = (data->blocks == 1) ? 1 : data->sg_len;
-
-	/* Only do DMA for entire blocks */
-	use_dma = host->use_dma;
-	if (use_dma) {
-		for (i = 0; i < sg_len; i++) {
-			if ((data->sg[i].length % block_size) != 0) {
-				use_dma = 0;
-				break;
-			}
-		}
-	}
-
-	host->sg_idx = 0;
-	if (use_dma) {
-		if (mmc_omap_get_dma_channel(host, data) == 0) {
-			enum dma_data_direction dma_data_dir;
-
-			if (data->flags & MMC_DATA_WRITE)
-				dma_data_dir = DMA_TO_DEVICE;
-			else
-				dma_data_dir = DMA_FROM_DEVICE;
-
-			host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
-						sg_len, dma_data_dir);
-			host->total_bytes_left = 0;
-			mmc_omap_prepare_dma(host, req->data);
-			host->brs_received = 0;
-			host->dma_done = 0;
-			host->dma_in_use = 1;
-		} else
-			use_dma = 0;
-	}
-
-	/* Revert to PIO? */
-	if (!use_dma) {
-		OMAP_MMC_WRITE(host, BUF, 0x1f1f);
-		host->total_bytes_left = data->blocks * block_size;
-		host->sg_len = sg_len;
-		mmc_omap_sg_to_buf(host);
-		host->dma_in_use = 0;
-	}
-}
-
-static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req)
-{
-	struct mmc_omap_host *host = mmc_priv(mmc);
-
-	WARN_ON(host->mrq != NULL);
-
-	host->mrq = req;
-
-	/* only touch fifo AFTER the controller readies it */
-	mmc_omap_prepare_data(host, req);
-	mmc_omap_start_command(host, req->cmd);
-	if (host->dma_in_use)
-		omap_start_dma(host->dma_ch);
-}
-
-static void innovator_fpga_socket_power(int on)
-{
-#if defined(CONFIG_MACH_OMAP_INNOVATOR) && defined(CONFIG_ARCH_OMAP15XX)
-	if (on) {
-		fpga_write(fpga_read(OMAP1510_FPGA_POWER) | (1 << 3),
-		     OMAP1510_FPGA_POWER);
-	} else {
-		fpga_write(fpga_read(OMAP1510_FPGA_POWER) & ~(1 << 3),
-		     OMAP1510_FPGA_POWER);
-	}
-#endif
-}
-
-/*
- * Turn the socket power on/off. Innovator uses FPGA, most boards
- * probably use GPIO.
- */
-static void mmc_omap_power(struct mmc_omap_host *host, int on)
-{
-	if (on) {
-		if (machine_is_omap_innovator())
-			innovator_fpga_socket_power(1);
-		else if (machine_is_omap_h2())
-			tps65010_set_gpio_out_value(GPIO3, HIGH);
-		else if (machine_is_omap_h3())
-			/* GPIO 4 of TPS65010 sends SD_EN signal */
-			tps65010_set_gpio_out_value(GPIO4, HIGH);
-		else if (cpu_is_omap24xx()) {
-			u16 reg = OMAP_MMC_READ(host, CON);
-			OMAP_MMC_WRITE(host, CON, reg | (1 << 11));
-		} else
-			if (host->power_pin >= 0)
-				omap_set_gpio_dataout(host->power_pin, 1);
-	} else {
-		if (machine_is_omap_innovator())
-			innovator_fpga_socket_power(0);
-		else if (machine_is_omap_h2())
-			tps65010_set_gpio_out_value(GPIO3, LOW);
-		else if (machine_is_omap_h3())
-			tps65010_set_gpio_out_value(GPIO4, LOW);
-		else if (cpu_is_omap24xx()) {
-			u16 reg = OMAP_MMC_READ(host, CON);
-			OMAP_MMC_WRITE(host, CON, reg & ~(1 << 11));
-		} else
-			if (host->power_pin >= 0)
-				omap_set_gpio_dataout(host->power_pin, 0);
-	}
-}
-
-static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
-	struct mmc_omap_host *host = mmc_priv(mmc);
-	int dsor;
-	int realclock, i;
-
-	realclock = ios->clock;
-
-	if (ios->clock == 0)
-		dsor = 0;
-	else {
-		int func_clk_rate = clk_get_rate(host->fclk);
-
-		dsor = func_clk_rate / realclock;
-		if (dsor < 1)
-			dsor = 1;
-
-		if (func_clk_rate / dsor > realclock)
-			dsor++;
-
-		if (dsor > 250)
-			dsor = 250;
-		dsor++;
-
-		if (ios->bus_width == MMC_BUS_WIDTH_4)
-			dsor |= 1 << 15;
-	}
-
-	switch (ios->power_mode) {
-	case MMC_POWER_OFF:
-		mmc_omap_power(host, 0);
-		break;
-	case MMC_POWER_UP:
-	case MMC_POWER_ON:
-		mmc_omap_power(host, 1);
-		dsor |= 1 << 11;
-		break;
-	}
-
-	host->bus_mode = ios->bus_mode;
-	host->hw_bus_mode = host->bus_mode;
-
-	clk_enable(host->fclk);
-
-	/* On insanely high arm_per frequencies something sometimes
-	 * goes somehow out of sync, and the POW bit is not being set,
-	 * which results in the while loop below getting stuck.
-	 * Writing to the CON register twice seems to do the trick. */
-	for (i = 0; i < 2; i++)
-		OMAP_MMC_WRITE(host, CON, dsor);
-	if (ios->power_mode == MMC_POWER_UP) {
-		/* Send clock cycles, poll completion */
-		OMAP_MMC_WRITE(host, IE, 0);
-		OMAP_MMC_WRITE(host, STAT, 0xffff);
-		OMAP_MMC_WRITE(host, CMD, 1 << 7);
-		while ((OMAP_MMC_READ(host, STAT) & 1) == 0);
-		OMAP_MMC_WRITE(host, STAT, 1);
-	}
-	clk_disable(host->fclk);
-}
-
-static int mmc_omap_get_ro(struct mmc_host *mmc)
-{
-	struct mmc_omap_host *host = mmc_priv(mmc);
-
-	return host->wp_pin && omap_get_gpio_datain(host->wp_pin);
-}
-
-static const struct mmc_host_ops mmc_omap_ops = {
-	.request	= mmc_omap_request,
-	.set_ios	= mmc_omap_set_ios,
-	.get_ro		= mmc_omap_get_ro,
-};
-
-static int __init mmc_omap_probe(struct platform_device *pdev)
-{
-	struct omap_mmc_conf *minfo = pdev->dev.platform_data;
-	struct mmc_host *mmc;
-	struct mmc_omap_host *host = NULL;
-	struct resource *res;
-	int ret = 0;
-	int irq;
-
-	if (minfo == NULL) {
-		dev_err(&pdev->dev, "platform data missing\n");
-		return -ENXIO;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(pdev, 0);
-	if (res == NULL || irq < 0)
-		return -ENXIO;
-
-	res = request_mem_region(res->start, res->end - res->start + 1,
-			         pdev->name);
-	if (res == NULL)
-		return -EBUSY;
-
-	mmc = mmc_alloc_host(sizeof(struct mmc_omap_host), &pdev->dev);
-	if (mmc == NULL) {
-		ret = -ENOMEM;
-		goto err_free_mem_region;
-	}
-
-	host = mmc_priv(mmc);
-	host->mmc = mmc;
-
-	spin_lock_init(&host->dma_lock);
-	init_timer(&host->dma_timer);
-	host->dma_timer.function = mmc_omap_dma_timer;
-	host->dma_timer.data = (unsigned long) host;
-
-	host->id = pdev->id;
-	host->mem_res = res;
-	host->irq = irq;
-
-	if (cpu_is_omap24xx()) {
-		host->iclk = clk_get(&pdev->dev, "mmc_ick");
-		if (IS_ERR(host->iclk))
-			goto err_free_mmc_host;
-		clk_enable(host->iclk);
-	}
-
-	if (!cpu_is_omap24xx())
-		host->fclk = clk_get(&pdev->dev, "mmc_ck");
-	else
-		host->fclk = clk_get(&pdev->dev, "mmc_fck");
-
-	if (IS_ERR(host->fclk)) {
-		ret = PTR_ERR(host->fclk);
-		goto err_free_iclk;
-	}
-
-	/* REVISIT:
-	 * Also, use minfo->cover to decide how to manage
-	 * the card detect sensing.
-	 */
-	host->power_pin = minfo->power_pin;
-	host->switch_pin = minfo->switch_pin;
-	host->wp_pin = minfo->wp_pin;
-	host->use_dma = 1;
-	host->dma_ch = -1;
-
-	host->irq = irq;
-	host->phys_base = host->mem_res->start;
-	host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base);
-
-	mmc->ops = &mmc_omap_ops;
-	mmc->f_min = 400000;
-	mmc->f_max = 24000000;
-	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-	mmc->caps = MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK;
-
-	if (minfo->wire4)
-		 mmc->caps |= MMC_CAP_4_BIT_DATA;
-
-	/* Use scatterlist DMA to reduce per-transfer costs.
-	 * NOTE max_seg_size assumption that small blocks aren't
-	 * normally used (except e.g. for reading SD registers).
-	 */
-	mmc->max_phys_segs = 32;
-	mmc->max_hw_segs = 32;
-	mmc->max_blk_size = 2048;	/* BLEN is 11 bits (+1) */
-	mmc->max_blk_count = 2048;	/* NBLK is 11 bits (+1) */
-	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
-	mmc->max_seg_size = mmc->max_req_size;
-
-	if (host->power_pin >= 0) {
-		if ((ret = omap_request_gpio(host->power_pin)) != 0) {
-			dev_err(mmc_dev(host->mmc),
-				"Unable to get GPIO pin for MMC power\n");
-			goto err_free_fclk;
-		}
-		omap_set_gpio_direction(host->power_pin, 0);
-	}
-
-	ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
-	if (ret)
-		goto err_free_power_gpio;
-
-	host->dev = &pdev->dev;
-	platform_set_drvdata(pdev, host);
-
-	if (host->switch_pin >= 0) {
-		INIT_WORK(&host->switch_work, mmc_omap_switch_handler);
-		init_timer(&host->switch_timer);
-		host->switch_timer.function = mmc_omap_switch_timer;
-		host->switch_timer.data = (unsigned long) host;
-		if (omap_request_gpio(host->switch_pin) != 0) {
-			dev_warn(mmc_dev(host->mmc), "Unable to get GPIO pin for MMC cover switch\n");
-			host->switch_pin = -1;
-			goto no_switch;
-		}
-
-		omap_set_gpio_direction(host->switch_pin, 1);
-		ret = request_irq(OMAP_GPIO_IRQ(host->switch_pin),
-				  mmc_omap_switch_irq, IRQF_TRIGGER_RISING, DRIVER_NAME, host);
-		if (ret) {
-			dev_warn(mmc_dev(host->mmc), "Unable to get IRQ for MMC cover switch\n");
-			omap_free_gpio(host->switch_pin);
-			host->switch_pin = -1;
-			goto no_switch;
-		}
-		ret = device_create_file(&pdev->dev, &dev_attr_cover_switch);
-		if (ret == 0) {
-			ret = device_create_file(&pdev->dev, &dev_attr_enable_poll);
-			if (ret != 0)
-				device_remove_file(&pdev->dev, &dev_attr_cover_switch);
-		}
-		if (ret) {
-			dev_warn(mmc_dev(host->mmc), "Unable to create sysfs attributes\n");
-			free_irq(OMAP_GPIO_IRQ(host->switch_pin), host);
-			omap_free_gpio(host->switch_pin);
-			host->switch_pin = -1;
-			goto no_switch;
-		}
-		if (mmc_omap_enable_poll && mmc_omap_cover_is_open(host))
-			schedule_work(&host->switch_work);
-	}
-
-	mmc_add_host(mmc);
-
-	return 0;
-
-no_switch:
-	/* FIXME: Free other resources too. */
-	if (host) {
-		if (host->iclk && !IS_ERR(host->iclk))
-			clk_put(host->iclk);
-		if (host->fclk && !IS_ERR(host->fclk))
-			clk_put(host->fclk);
-		mmc_free_host(host->mmc);
-	}
-err_free_power_gpio:
-	if (host->power_pin >= 0)
-		omap_free_gpio(host->power_pin);
-err_free_fclk:
-	clk_put(host->fclk);
-err_free_iclk:
-	if (host->iclk != NULL) {
-		clk_disable(host->iclk);
-		clk_put(host->iclk);
-	}
-err_free_mmc_host:
-	mmc_free_host(host->mmc);
-err_free_mem_region:
-	release_mem_region(res->start, res->end - res->start + 1);
-	return ret;
-}
-
-static int mmc_omap_remove(struct platform_device *pdev)
-{
-	struct mmc_omap_host *host = platform_get_drvdata(pdev);
-
-	platform_set_drvdata(pdev, NULL);
-
-	BUG_ON(host == NULL);
-
-	mmc_remove_host(host->mmc);
-	free_irq(host->irq, host);
-
-	if (host->power_pin >= 0)
-		omap_free_gpio(host->power_pin);
-	if (host->switch_pin >= 0) {
-		device_remove_file(&pdev->dev, &dev_attr_enable_poll);
-		device_remove_file(&pdev->dev, &dev_attr_cover_switch);
-		free_irq(OMAP_GPIO_IRQ(host->switch_pin), host);
-		omap_free_gpio(host->switch_pin);
-		host->switch_pin = -1;
-		del_timer_sync(&host->switch_timer);
-		flush_scheduled_work();
-	}
-	if (host->iclk && !IS_ERR(host->iclk))
-		clk_put(host->iclk);
-	if (host->fclk && !IS_ERR(host->fclk))
-		clk_put(host->fclk);
-
-	release_mem_region(pdev->resource[0].start,
-			   pdev->resource[0].end - pdev->resource[0].start + 1);
-
-	mmc_free_host(host->mmc);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int mmc_omap_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
-	int ret = 0;
-	struct mmc_omap_host *host = platform_get_drvdata(pdev);
-
-	if (host && host->suspended)
-		return 0;
-
-	if (host) {
-		ret = mmc_suspend_host(host->mmc, mesg);
-		if (ret == 0)
-			host->suspended = 1;
-	}
-	return ret;
-}
-
-static int mmc_omap_resume(struct platform_device *pdev)
-{
-	int ret = 0;
-	struct mmc_omap_host *host = platform_get_drvdata(pdev);
-
-	if (host && !host->suspended)
-		return 0;
-
-	if (host) {
-		ret = mmc_resume_host(host->mmc);
-		if (ret == 0)
-			host->suspended = 0;
-	}
-
-	return ret;
-}
-#else
-#define mmc_omap_suspend	NULL
-#define mmc_omap_resume		NULL
-#endif
-
-static struct platform_driver mmc_omap_driver = {
-	.probe		= mmc_omap_probe,
-	.remove		= mmc_omap_remove,
-	.suspend	= mmc_omap_suspend,
-	.resume		= mmc_omap_resume,
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-};
-
-static int __init mmc_omap_init(void)
-{
-	return platform_driver_register(&mmc_omap_driver);
-}
-
-static void __exit mmc_omap_exit(void)
-{
-	platform_driver_unregister(&mmc_omap_driver);
-}
-
-module_init(mmc_omap_init);
-module_exit(mmc_omap_exit);
-
-MODULE_DESCRIPTION("OMAP Multimedia Card driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS(DRIVER_NAME);
-MODULE_AUTHOR("Juha Yrjölä");