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, 1102 deletions

diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
deleted file mode 100644
index b0d77d298412..000000000000
--- a/drivers/mmc/tifm_sd.c
+++ /dev/null
@@ -1,1102 +0,0 @@
-/*
- *  tifm_sd.c - TI FlashMedia driver
- *
- *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
- *
- * 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.
- *
- * Special thanks to Brad Campbell for extensive testing of this driver.
- *
- */
-
-
-#include <linux/tifm.h>
-#include <linux/mmc/host.h>
-#include <linux/highmem.h>
-#include <linux/scatterlist.h>
-#include <asm/io.h>
-
-#define DRIVER_NAME "tifm_sd"
-#define DRIVER_VERSION "0.8"
-
-static int no_dma = 0;
-static int fixed_timeout = 0;
-module_param(no_dma, bool, 0644);
-module_param(fixed_timeout, bool, 0644);
-
-/* Constants here are mostly from OMAP5912 datasheet */
-#define TIFM_MMCSD_RESET      0x0002
-#define TIFM_MMCSD_CLKMASK    0x03ff
-#define TIFM_MMCSD_POWER      0x0800
-#define TIFM_MMCSD_4BBUS      0x8000
-#define TIFM_MMCSD_RXDE       0x8000   /* rx dma enable */
-#define TIFM_MMCSD_TXDE       0x0080   /* tx dma enable */
-#define TIFM_MMCSD_BUFINT     0x0c00   /* set bits: AE, AF */
-#define TIFM_MMCSD_DPE        0x0020   /* data timeout counted in kilocycles */
-#define TIFM_MMCSD_INAB       0x0080   /* abort / initialize command */
-#define TIFM_MMCSD_READ       0x8000
-
-#define TIFM_MMCSD_ERRMASK    0x01e0   /* set bits: CCRC, CTO, DCRC, DTO */
-#define TIFM_MMCSD_EOC        0x0001   /* end of command phase  */
-#define TIFM_MMCSD_CD         0x0002   /* card detect           */
-#define TIFM_MMCSD_CB         0x0004   /* card enter busy state */
-#define TIFM_MMCSD_BRS        0x0008   /* block received/sent   */
-#define TIFM_MMCSD_EOFB       0x0010   /* card exit busy state  */
-#define TIFM_MMCSD_DTO        0x0020   /* data time-out         */
-#define TIFM_MMCSD_DCRC       0x0040   /* data crc error        */
-#define TIFM_MMCSD_CTO        0x0080   /* command time-out      */
-#define TIFM_MMCSD_CCRC       0x0100   /* command crc error     */
-#define TIFM_MMCSD_AF         0x0400   /* fifo almost full      */
-#define TIFM_MMCSD_AE         0x0800   /* fifo almost empty     */
-#define TIFM_MMCSD_OCRB       0x1000   /* OCR busy              */
-#define TIFM_MMCSD_CIRQ       0x2000   /* card irq (cmd40/sdio) */
-#define TIFM_MMCSD_CERR       0x4000   /* card status error     */
-
-#define TIFM_MMCSD_ODTO       0x0040   /* open drain / extended timeout */
-#define TIFM_MMCSD_CARD_RO    0x0200   /* card is read-only     */
-
-#define TIFM_MMCSD_FIFO_SIZE  0x0020
-
-#define TIFM_MMCSD_RSP_R0     0x0000
-#define TIFM_MMCSD_RSP_R1     0x0100
-#define TIFM_MMCSD_RSP_R2     0x0200
-#define TIFM_MMCSD_RSP_R3     0x0300
-#define TIFM_MMCSD_RSP_R4     0x0400
-#define TIFM_MMCSD_RSP_R5     0x0500
-#define TIFM_MMCSD_RSP_R6     0x0600
-
-#define TIFM_MMCSD_RSP_BUSY   0x0800
-
-#define TIFM_MMCSD_CMD_BC     0x0000
-#define TIFM_MMCSD_CMD_BCR    0x1000
-#define TIFM_MMCSD_CMD_AC     0x2000
-#define TIFM_MMCSD_CMD_ADTC   0x3000
-
-#define TIFM_MMCSD_MAX_BLOCK_SIZE  0x0800UL
-
-enum {
-	CMD_READY    = 0x0001,
-	FIFO_READY   = 0x0002,
-	BRS_READY    = 0x0004,
-	SCMD_ACTIVE  = 0x0008,
-	SCMD_READY   = 0x0010,
-	CARD_BUSY    = 0x0020,
-	DATA_CARRY   = 0x0040
-};
-
-struct tifm_sd {
-	struct tifm_dev       *dev;
-
-	unsigned short        eject:1,
-			      open_drain:1,
-			      no_dma:1;
-	unsigned short        cmd_flags;
-
-	unsigned int          clk_freq;
-	unsigned int          clk_div;
-	unsigned long         timeout_jiffies;
-
-	struct tasklet_struct finish_tasklet;
-	struct timer_list     timer;
-	struct mmc_request    *req;
-
-	int                   sg_len;
-	int                   sg_pos;
-	unsigned int          block_pos;
-	struct scatterlist    bounce_buf;
-	unsigned char         bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE];
-};
-
-/* for some reason, host won't respond correctly to readw/writew */
-static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg,
-			      unsigned int off, unsigned int cnt)
-{
-	struct tifm_dev *sock = host->dev;
-	unsigned char *buf;
-	unsigned int pos = 0, val;
-
-	buf = kmap_atomic(pg, KM_BIO_DST_IRQ) + off;
-	if (host->cmd_flags & DATA_CARRY) {
-		buf[pos++] = host->bounce_buf_data[0];
-		host->cmd_flags &= ~DATA_CARRY;
-	}
-
-	while (pos < cnt) {
-		val = readl(sock->addr + SOCK_MMCSD_DATA);
-		buf[pos++] = val & 0xff;
-		if (pos == cnt) {
-			host->bounce_buf_data[0] = (val >> 8) & 0xff;
-			host->cmd_flags |= DATA_CARRY;
-			break;
-		}
-		buf[pos++] = (val >> 8) & 0xff;
-	}
-	kunmap_atomic(buf - off, KM_BIO_DST_IRQ);
-}
-
-static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
-			       unsigned int off, unsigned int cnt)
-{
-	struct tifm_dev *sock = host->dev;
-	unsigned char *buf;
-	unsigned int pos = 0, val;
-
-	buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + off;
-	if (host->cmd_flags & DATA_CARRY) {
-		val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00);
-		writel(val, sock->addr + SOCK_MMCSD_DATA);
-		host->cmd_flags &= ~DATA_CARRY;
-	}
-
-	while (pos < cnt) {
-		val = buf[pos++];
-		if (pos == cnt) {
-			host->bounce_buf_data[0] = val & 0xff;
-			host->cmd_flags |= DATA_CARRY;
-			break;
-		}
-		val |= (buf[pos++] << 8) & 0xff00;
-		writel(val, sock->addr + SOCK_MMCSD_DATA);
-	}
-	kunmap_atomic(buf - off, KM_BIO_SRC_IRQ);
-}
-
-static void tifm_sd_transfer_data(struct tifm_sd *host)
-{
-	struct mmc_data *r_data = host->req->cmd->data;
-	struct scatterlist *sg = r_data->sg;
-	unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2;
-	unsigned int p_off, p_cnt;
-	struct page *pg;
-
-	if (host->sg_pos == host->sg_len)
-		return;
-	while (t_size) {
-		cnt = sg[host->sg_pos].length - host->block_pos;
-		if (!cnt) {
-			host->block_pos = 0;
-			host->sg_pos++;
-			if (host->sg_pos == host->sg_len) {
-				if ((r_data->flags & MMC_DATA_WRITE)
-				    && DATA_CARRY)
-					writel(host->bounce_buf_data[0],
-					       host->dev->addr
-					       + SOCK_MMCSD_DATA);
-
-				return;
-			}
-			cnt = sg[host->sg_pos].length;
-		}
-		off = sg[host->sg_pos].offset + host->block_pos;
-
-		pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT);
-		p_off = offset_in_page(off);
-		p_cnt = PAGE_SIZE - p_off;
-		p_cnt = min(p_cnt, cnt);
-		p_cnt = min(p_cnt, t_size);
-
-		if (r_data->flags & MMC_DATA_READ)
-			tifm_sd_read_fifo(host, pg, p_off, p_cnt);
-		else if (r_data->flags & MMC_DATA_WRITE)
-			tifm_sd_write_fifo(host, pg, p_off, p_cnt);
-
-		t_size -= p_cnt;
-		host->block_pos += p_cnt;
-	}
-}
-
-static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off,
-			      struct page *src, unsigned int src_off,
-			      unsigned int count)
-{
-	unsigned char *src_buf = kmap_atomic(src, KM_BIO_SRC_IRQ) + src_off;
-	unsigned char *dst_buf = kmap_atomic(dst, KM_BIO_DST_IRQ) + dst_off;
-
-	memcpy(dst_buf, src_buf, count);
-
-	kunmap_atomic(dst_buf - dst_off, KM_BIO_DST_IRQ);
-	kunmap_atomic(src_buf - src_off, KM_BIO_SRC_IRQ);
-}
-
-static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data)
-{
-	struct scatterlist *sg = r_data->sg;
-	unsigned int t_size = r_data->blksz;
-	unsigned int off, cnt;
-	unsigned int p_off, p_cnt;
-	struct page *pg;
-
-	dev_dbg(&host->dev->dev, "bouncing block\n");
-	while (t_size) {
-		cnt = sg[host->sg_pos].length - host->block_pos;
-		if (!cnt) {
-			host->block_pos = 0;
-			host->sg_pos++;
-			if (host->sg_pos == host->sg_len)
-				return;
-			cnt = sg[host->sg_pos].length;
-		}
-		off = sg[host->sg_pos].offset + host->block_pos;
-
-		pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT);
-		p_off = offset_in_page(off);
-		p_cnt = PAGE_SIZE - p_off;
-		p_cnt = min(p_cnt, cnt);
-		p_cnt = min(p_cnt, t_size);
-
-		if (r_data->flags & MMC_DATA_WRITE)
-			tifm_sd_copy_page(host->bounce_buf.page,
-					  r_data->blksz - t_size,
-					  pg, p_off, p_cnt);
-		else if (r_data->flags & MMC_DATA_READ)
-			tifm_sd_copy_page(pg, p_off, host->bounce_buf.page,
-					  r_data->blksz - t_size, p_cnt);
-
-		t_size -= p_cnt;
-		host->block_pos += p_cnt;
-	}
-}
-
-int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data)
-{
-	struct tifm_dev *sock = host->dev;
-	unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz;
-	unsigned int dma_len, dma_blk_cnt, dma_off;
-	struct scatterlist *sg = NULL;
-	unsigned long flags;
-
-	if (host->sg_pos == host->sg_len)
-		return 1;
-
-	if (host->cmd_flags & DATA_CARRY) {
-		host->cmd_flags &= ~DATA_CARRY;
-		local_irq_save(flags);
-		tifm_sd_bounce_block(host, r_data);
-		local_irq_restore(flags);
-		if (host->sg_pos == host->sg_len)
-			return 1;
-	}
-
-	dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos;
-	if (!dma_len) {
-		host->block_pos = 0;
-		host->sg_pos++;
-		if (host->sg_pos == host->sg_len)
-			return 1;
-		dma_len = sg_dma_len(&r_data->sg[host->sg_pos]);
-	}
-
-	if (dma_len < t_size) {
-		dma_blk_cnt = dma_len / r_data->blksz;
-		dma_off = host->block_pos;
-		host->block_pos += dma_blk_cnt * r_data->blksz;
-	} else {
-		dma_blk_cnt = TIFM_DMA_TSIZE;
-		dma_off = host->block_pos;
-		host->block_pos += t_size;
-	}
-
-	if (dma_blk_cnt)
-		sg = &r_data->sg[host->sg_pos];
-	else if (dma_len) {
-		if (r_data->flags & MMC_DATA_WRITE) {
-			local_irq_save(flags);
-			tifm_sd_bounce_block(host, r_data);
-			local_irq_restore(flags);
-		} else
-			host->cmd_flags |= DATA_CARRY;
-
-		sg = &host->bounce_buf;
-		dma_off = 0;
-		dma_blk_cnt = 1;
-	} else
-		return 1;
-
-	dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt);
-	writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS);
-	if (r_data->flags & MMC_DATA_WRITE)
-		writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN,
-		       sock->addr + SOCK_DMA_CONTROL);
-	else
-		writel((dma_blk_cnt << 8) | TIFM_DMA_EN,
-		       sock->addr + SOCK_DMA_CONTROL);
-
-	return 0;
-}
-
-static unsigned int tifm_sd_op_flags(struct mmc_command *cmd)
-{
-	unsigned int rc = 0;
-
-	switch (mmc_resp_type(cmd)) {
-	case MMC_RSP_NONE:
-		rc |= TIFM_MMCSD_RSP_R0;
-		break;
-	case MMC_RSP_R1B:
-		rc |= TIFM_MMCSD_RSP_BUSY; // deliberate fall-through
-	case MMC_RSP_R1:
-		rc |= TIFM_MMCSD_RSP_R1;
-		break;
-	case MMC_RSP_R2:
-		rc |= TIFM_MMCSD_RSP_R2;
-		break;
-	case MMC_RSP_R3:
-		rc |= TIFM_MMCSD_RSP_R3;
-		break;
-	default:
-		BUG();
-	}
-
-	switch (mmc_cmd_type(cmd)) {
-	case MMC_CMD_BC:
-		rc |= TIFM_MMCSD_CMD_BC;
-		break;
-	case MMC_CMD_BCR:
-		rc |= TIFM_MMCSD_CMD_BCR;
-		break;
-	case MMC_CMD_AC:
-		rc |= TIFM_MMCSD_CMD_AC;
-		break;
-	case MMC_CMD_ADTC:
-		rc |= TIFM_MMCSD_CMD_ADTC;
-		break;
-	default:
-		BUG();
-	}
-	return rc;
-}
-
-static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd)
-{
-	struct tifm_dev *sock = host->dev;
-	unsigned int cmd_mask = tifm_sd_op_flags(cmd);
-
-	if (host->open_drain)
-		cmd_mask |= TIFM_MMCSD_ODTO;
-
-	if (cmd->data && (cmd->data->flags & MMC_DATA_READ))
-		cmd_mask |= TIFM_MMCSD_READ;
-
-	dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n",
-		cmd->opcode, cmd->arg, cmd_mask);
-
-	writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH);
-	writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW);
-	writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND);
-}
-
-static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock)
-{
-	cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16)
-		       | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18);
-	cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16)
-		       | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10);
-	cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16)
-		       | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08);
-	cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16)
-		       | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00);
-}
-
-static void tifm_sd_check_status(struct tifm_sd *host)
-{
-	struct tifm_dev *sock = host->dev;
-	struct mmc_command *cmd = host->req->cmd;
-
-	if (cmd->error != MMC_ERR_NONE)
-		goto finish_request;
-
-	if (!(host->cmd_flags & CMD_READY))
-		return;
-
-	if (cmd->data) {
-		if (cmd->data->error != MMC_ERR_NONE) {
-			if ((host->cmd_flags & SCMD_ACTIVE)
-			    && !(host->cmd_flags & SCMD_READY))
-				return;
-
-			goto finish_request;
-		}
-
-		if (!(host->cmd_flags & BRS_READY))
-			return;
-
-		if (!(host->no_dma || (host->cmd_flags & FIFO_READY)))
-			return;
-
-		if (cmd->data->flags & MMC_DATA_WRITE) {
-			if (host->req->stop) {
-				if (!(host->cmd_flags & SCMD_ACTIVE)) {
-					host->cmd_flags |= SCMD_ACTIVE;
-					writel(TIFM_MMCSD_EOFB
-					       | readl(sock->addr
-						       + SOCK_MMCSD_INT_ENABLE),
-					       sock->addr
-					       + SOCK_MMCSD_INT_ENABLE);
-					tifm_sd_exec(host, host->req->stop);
-					return;
-				} else {
-					if (!(host->cmd_flags & SCMD_READY)
-					    || (host->cmd_flags & CARD_BUSY))
-						return;
-					writel((~TIFM_MMCSD_EOFB)
-					       & readl(sock->addr
-						       + SOCK_MMCSD_INT_ENABLE),
-					       sock->addr
-					       + SOCK_MMCSD_INT_ENABLE);
-				}
-			} else {
-				if (host->cmd_flags & CARD_BUSY)
-					return;
-				writel((~TIFM_MMCSD_EOFB)
-				       & readl(sock->addr
-					       + SOCK_MMCSD_INT_ENABLE),
-				       sock->addr + SOCK_MMCSD_INT_ENABLE);
-			}
-		} else {
-			if (host->req->stop) {
-				if (!(host->cmd_flags & SCMD_ACTIVE)) {
-					host->cmd_flags |= SCMD_ACTIVE;
-					tifm_sd_exec(host, host->req->stop);
-					return;
-				} else {
-					if (!(host->cmd_flags & SCMD_READY))
-						return;
-				}
-			}
-		}
-	}
-finish_request:
-	tasklet_schedule(&host->finish_tasklet);
-}
-
-/* Called from interrupt handler */
-static void tifm_sd_data_event(struct tifm_dev *sock)
-{
-	struct tifm_sd *host;
-	unsigned int fifo_status = 0;
-	struct mmc_data *r_data = NULL;
-
-	spin_lock(&sock->lock);
-	host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
-	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
-	dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n",
-		fifo_status, host->cmd_flags);
-
-	if (host->req) {
-		r_data = host->req->cmd->data;
-
-		if (r_data && (fifo_status & TIFM_FIFO_READY)) {
-			if (tifm_sd_set_dma_data(host, r_data)) {
-				host->cmd_flags |= FIFO_READY;
-				tifm_sd_check_status(host);
-			}
-		}
-	}
-
-	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
-	spin_unlock(&sock->lock);
-}
-
-/* Called from interrupt handler */
-static void tifm_sd_card_event(struct tifm_dev *sock)
-{
-	struct tifm_sd *host;
-	unsigned int host_status = 0;
-	int cmd_error = MMC_ERR_NONE;
-	struct mmc_command *cmd = NULL;
-	unsigned long flags;
-
-	spin_lock(&sock->lock);
-	host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
-	host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
-	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
-		host_status, host->cmd_flags);
-
-	if (host->req) {
-		cmd = host->req->cmd;
-
-		if (host_status & TIFM_MMCSD_ERRMASK) {
-			writel(host_status & TIFM_MMCSD_ERRMASK,
-			       sock->addr + SOCK_MMCSD_STATUS);
-			if (host_status & TIFM_MMCSD_CTO)
-				cmd_error = MMC_ERR_TIMEOUT;
-			else if (host_status & TIFM_MMCSD_CCRC)
-				cmd_error = MMC_ERR_BADCRC;
-
-			if (cmd->data) {
-				if (host_status & TIFM_MMCSD_DTO)
-					cmd->data->error = MMC_ERR_TIMEOUT;
-				else if (host_status & TIFM_MMCSD_DCRC)
-					cmd->data->error = MMC_ERR_BADCRC;
-			}
-
-			writel(TIFM_FIFO_INT_SETALL,
-			       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
-			writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
-
-			if (host->req->stop) {
-				if (host->cmd_flags & SCMD_ACTIVE) {
-					host->req->stop->error = cmd_error;
-					host->cmd_flags |= SCMD_READY;
-				} else {
-					cmd->error = cmd_error;
-					host->cmd_flags |= SCMD_ACTIVE;
-					tifm_sd_exec(host, host->req->stop);
-					goto done;
-				}
-			} else
-				cmd->error = cmd_error;
-		} else {
-			if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) {
-				if (!(host->cmd_flags & CMD_READY)) {
-					host->cmd_flags |= CMD_READY;
-					tifm_sd_fetch_resp(cmd, sock);
-				} else if (host->cmd_flags & SCMD_ACTIVE) {
-					host->cmd_flags |= SCMD_READY;
-					tifm_sd_fetch_resp(host->req->stop,
-							   sock);
-				}
-			}
-			if (host_status & TIFM_MMCSD_BRS)
-				host->cmd_flags |= BRS_READY;
-		}
-
-		if (host->no_dma && cmd->data) {
-			if (host_status & TIFM_MMCSD_AE)
-				writel(host_status & TIFM_MMCSD_AE,
-				       sock->addr + SOCK_MMCSD_STATUS);
-
-			if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF
-					   | TIFM_MMCSD_BRS)) {
-				local_irq_save(flags);
-				tifm_sd_transfer_data(host);
-				local_irq_restore(flags);
-				host_status &= ~TIFM_MMCSD_AE;
-			}
-		}
-
-		if (host_status & TIFM_MMCSD_EOFB)
-			host->cmd_flags &= ~CARD_BUSY;
-		else if (host_status & TIFM_MMCSD_CB)
-			host->cmd_flags |= CARD_BUSY;
-
-		tifm_sd_check_status(host);
-	}
-done:
-	writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
-	spin_unlock(&sock->lock);
-}
-
-static void tifm_sd_set_data_timeout(struct tifm_sd *host,
-				     struct mmc_data *data)
-{
-	struct tifm_dev *sock = host->dev;
-	unsigned int data_timeout = data->timeout_clks;
-
-	if (fixed_timeout)
-		return;
-
-	data_timeout += data->timeout_ns /
-			((1000000000UL / host->clk_freq) * host->clk_div);
-
-	if (data_timeout < 0xffff) {
-		writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
-		writel((~TIFM_MMCSD_DPE)
-		       & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
-		       sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
-	} else {
-		data_timeout = (data_timeout >> 10) + 1;
-		if (data_timeout > 0xffff)
-			data_timeout = 0;	/* set to unlimited */
-		writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
-		writel(TIFM_MMCSD_DPE
-		       | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
-		       sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
-	}
-}
-
-static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
-	struct tifm_sd *host = mmc_priv(mmc);
-	struct tifm_dev *sock = host->dev;
-	unsigned long flags;
-	struct mmc_data *r_data = mrq->cmd->data;
-
-	spin_lock_irqsave(&sock->lock, flags);
-	if (host->eject) {
-		spin_unlock_irqrestore(&sock->lock, flags);
-		goto err_out;
-	}
-
-	if (host->req) {
-		printk(KERN_ERR "%s : unfinished request detected\n",
-		       sock->dev.bus_id);
-		spin_unlock_irqrestore(&sock->lock, flags);
-		goto err_out;
-	}
-
-	host->cmd_flags = 0;
-	host->block_pos = 0;
-	host->sg_pos = 0;
-
-	if (r_data) {
-		tifm_sd_set_data_timeout(host, r_data);
-
-		if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop)
-			 writel(TIFM_MMCSD_EOFB
-				| readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
-				sock->addr + SOCK_MMCSD_INT_ENABLE);
-
-		if (host->no_dma) {
-			writel(TIFM_MMCSD_BUFINT
-			       | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
-			       sock->addr + SOCK_MMCSD_INT_ENABLE);
-			writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8)
-			       | (TIFM_MMCSD_FIFO_SIZE - 1),
-			       sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-
-			host->sg_len = r_data->sg_len;
-		} else {
-			sg_init_one(&host->bounce_buf, host->bounce_buf_data,
-				    r_data->blksz);
-
-			if(1 != tifm_map_sg(sock, &host->bounce_buf, 1,
-					    r_data->flags & MMC_DATA_WRITE
-					    ? PCI_DMA_TODEVICE
-					    : PCI_DMA_FROMDEVICE)) {
-				printk(KERN_ERR "%s : scatterlist map failed\n",
-				       sock->dev.bus_id);
-				spin_unlock_irqrestore(&sock->lock, flags);
-				goto err_out;
-			}
-			host->sg_len = tifm_map_sg(sock, r_data->sg,
-						   r_data->sg_len,
-						   r_data->flags
-						   & MMC_DATA_WRITE
-						   ? PCI_DMA_TODEVICE
-						   : PCI_DMA_FROMDEVICE);
-			if (host->sg_len < 1) {
-				printk(KERN_ERR "%s : scatterlist map failed\n",
-				       sock->dev.bus_id);
-				tifm_unmap_sg(sock, &host->bounce_buf, 1,
-					      r_data->flags & MMC_DATA_WRITE
-					      ? PCI_DMA_TODEVICE
-					      : PCI_DMA_FROMDEVICE);
-				spin_unlock_irqrestore(&sock->lock, flags);
-				goto err_out;
-			}
-
-			writel(TIFM_FIFO_INT_SETALL,
-			       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
-			writel(ilog2(r_data->blksz) - 2,
-			       sock->addr + SOCK_FIFO_PAGE_SIZE);
-			writel(TIFM_FIFO_ENABLE,
-			       sock->addr + SOCK_FIFO_CONTROL);
-			writel(TIFM_FIFO_INTMASK,
-			       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
-
-			if (r_data->flags & MMC_DATA_WRITE)
-				writel(TIFM_MMCSD_TXDE,
-				       sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-			else
-				writel(TIFM_MMCSD_RXDE,
-				       sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-
-			tifm_sd_set_dma_data(host, r_data);
-		}
-
-		writel(r_data->blocks - 1,
-		       sock->addr + SOCK_MMCSD_NUM_BLOCKS);
-		writel(r_data->blksz - 1,
-		       sock->addr + SOCK_MMCSD_BLOCK_LEN);
-	}
-
-	host->req = mrq;
-	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
-	writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
-	       sock->addr + SOCK_CONTROL);
-	tifm_sd_exec(host, mrq->cmd);
-	spin_unlock_irqrestore(&sock->lock, flags);
-	return;
-
-err_out:
-	mrq->cmd->error = MMC_ERR_TIMEOUT;
-	mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_end_cmd(unsigned long data)
-{
-	struct tifm_sd *host = (struct tifm_sd*)data;
-	struct tifm_dev *sock = host->dev;
-	struct mmc_host *mmc = tifm_get_drvdata(sock);
-	struct mmc_request *mrq;
-	struct mmc_data *r_data = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&sock->lock, flags);
-
-	del_timer(&host->timer);
-	mrq = host->req;
-	host->req = NULL;
-
-	if (!mrq) {
-		printk(KERN_ERR " %s : no request to complete?\n",
-		       sock->dev.bus_id);
-		spin_unlock_irqrestore(&sock->lock, flags);
-		return;
-	}
-
-	r_data = mrq->cmd->data;
-	if (r_data) {
-		if (host->no_dma) {
-			writel((~TIFM_MMCSD_BUFINT)
-			       & readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
-			       sock->addr + SOCK_MMCSD_INT_ENABLE);
-		} else {
-			tifm_unmap_sg(sock, &host->bounce_buf, 1,
-				      (r_data->flags & MMC_DATA_WRITE)
-				      ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-			tifm_unmap_sg(sock, r_data->sg, r_data->sg_len,
-				      (r_data->flags & MMC_DATA_WRITE)
-				      ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		}
-
-		r_data->bytes_xfered = r_data->blocks
-			- readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1;
-		r_data->bytes_xfered *= r_data->blksz;
-		r_data->bytes_xfered += r_data->blksz
-			- readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1;
-	}
-
-	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
-	       sock->addr + SOCK_CONTROL);
-
-	spin_unlock_irqrestore(&sock->lock, flags);
-	mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_abort(unsigned long data)
-{
-	struct tifm_sd *host = (struct tifm_sd*)data;
-
-	printk(KERN_ERR
-	       "%s : card failed to respond for a long period of time "
-	       "(%x, %x)\n",
-	       host->dev->dev.bus_id, host->req->cmd->opcode, host->cmd_flags);
-
-	tifm_eject(host->dev);
-}
-
-static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
-	struct tifm_sd *host = mmc_priv(mmc);
-	struct tifm_dev *sock = host->dev;
-	unsigned int clk_div1, clk_div2;
-	unsigned long flags;
-
-	spin_lock_irqsave(&sock->lock, flags);
-
-	dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, "
-		"chip_select = %x, power_mode = %x, bus_width = %x\n",
-		ios->clock, ios->vdd, ios->bus_mode, ios->chip_select,
-		ios->power_mode, ios->bus_width);
-
-	if (ios->bus_width == MMC_BUS_WIDTH_4) {
-		writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG),
-		       sock->addr + SOCK_MMCSD_CONFIG);
-	} else {
-		writel((~TIFM_MMCSD_4BBUS)
-		       & readl(sock->addr + SOCK_MMCSD_CONFIG),
-		       sock->addr + SOCK_MMCSD_CONFIG);
-	}
-
-	if (ios->clock) {
-		clk_div1 = 20000000 / ios->clock;
-		if (!clk_div1)
-			clk_div1 = 1;
-
-		clk_div2 = 24000000 / ios->clock;
-		if (!clk_div2)
-			clk_div2 = 1;
-
-		if ((20000000 / clk_div1) > ios->clock)
-			clk_div1++;
-		if ((24000000 / clk_div2) > ios->clock)
-			clk_div2++;
-		if ((20000000 / clk_div1) > (24000000 / clk_div2)) {
-			host->clk_freq = 20000000;
-			host->clk_div = clk_div1;
-			writel((~TIFM_CTRL_FAST_CLK)
-			       & readl(sock->addr + SOCK_CONTROL),
-			       sock->addr + SOCK_CONTROL);
-		} else {
-			host->clk_freq = 24000000;
-			host->clk_div = clk_div2;
-			writel(TIFM_CTRL_FAST_CLK
-			       | readl(sock->addr + SOCK_CONTROL),
-			       sock->addr + SOCK_CONTROL);
-		}
-	} else {
-		host->clk_div = 0;
-	}
-	host->clk_div &= TIFM_MMCSD_CLKMASK;
-	writel(host->clk_div
-	       | ((~TIFM_MMCSD_CLKMASK)
-		  & readl(sock->addr + SOCK_MMCSD_CONFIG)),
-	       sock->addr + SOCK_MMCSD_CONFIG);
-
-	host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN);
-
-	/* chip_select : maybe later */
-	//vdd
-	//power is set before probe / after remove
-
-	spin_unlock_irqrestore(&sock->lock, flags);
-}
-
-static int tifm_sd_ro(struct mmc_host *mmc)
-{
-	int rc = 0;
-	struct tifm_sd *host = mmc_priv(mmc);
-	struct tifm_dev *sock = host->dev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&sock->lock, flags);
-	if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE))
-		rc = 1;
-	spin_unlock_irqrestore(&sock->lock, flags);
-	return rc;
-}
-
-static const struct mmc_host_ops tifm_sd_ops = {
-	.request = tifm_sd_request,
-	.set_ios = tifm_sd_ios,
-	.get_ro  = tifm_sd_ro
-};
-
-static int tifm_sd_initialize_host(struct tifm_sd *host)
-{
-	int rc;
-	unsigned int host_status = 0;
-	struct tifm_dev *sock = host->dev;
-
-	writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
-	mmiowb();
-	host->clk_div = 61;
-	host->clk_freq = 20000000;
-	writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL);
-	writel(host->clk_div | TIFM_MMCSD_POWER,
-	       sock->addr + SOCK_MMCSD_CONFIG);
-
-	/* wait up to 0.51 sec for reset */
-	for (rc = 32; rc <= 256; rc <<= 1) {
-		if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) {
-			rc = 0;
-			break;
-		}
-		msleep(rc);
-	}
-
-	if (rc) {
-		printk(KERN_ERR "%s : controller failed to reset\n",
-		       sock->dev.bus_id);
-		return -ENODEV;
-	}
-
-	writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
-	writel(host->clk_div | TIFM_MMCSD_POWER,
-	       sock->addr + SOCK_MMCSD_CONFIG);
-	writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-
-	// command timeout fixed to 64 clocks for now
-	writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO);
-	writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND);
-
-	for (rc = 16; rc <= 64; rc <<= 1) {
-		host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
-		writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
-		if (!(host_status & TIFM_MMCSD_ERRMASK)
-		    && (host_status & TIFM_MMCSD_EOC)) {
-			rc = 0;
-			break;
-		}
-		msleep(rc);
-	}
-
-	if (rc) {
-		printk(KERN_ERR
-		       "%s : card not ready - probe failed on initialization\n",
-		       sock->dev.bus_id);
-		return -ENODEV;
-	}
-
-	writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC
-	       | TIFM_MMCSD_ERRMASK,
-	       sock->addr + SOCK_MMCSD_INT_ENABLE);
-	mmiowb();
-
-	return 0;
-}
-
-static int tifm_sd_probe(struct tifm_dev *sock)
-{
-	struct mmc_host *mmc;
-	struct tifm_sd *host;
-	int rc = -EIO;
-
-	if (!(TIFM_SOCK_STATE_OCCUPIED
-	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
-		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
-		       sock->dev.bus_id);
-		return rc;
-	}
-
-	mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev);
-	if (!mmc)
-		return -ENOMEM;
-
-	host = mmc_priv(mmc);
-	host->no_dma = no_dma;
-	tifm_set_drvdata(sock, mmc);
-	host->dev = sock;
-	host->timeout_jiffies = msecs_to_jiffies(1000);
-
-	tasklet_init(&host->finish_tasklet, tifm_sd_end_cmd,
-		     (unsigned long)host);
-	setup_timer(&host->timer, tifm_sd_abort, (unsigned long)host);
-
-	mmc->ops = &tifm_sd_ops;
-	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE;
-	mmc->f_min = 20000000 / 60;
-	mmc->f_max = 24000000;
-
-	mmc->max_blk_count = 2048;
-	mmc->max_hw_segs = mmc->max_blk_count;
-	mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE);
-	mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size;
-	mmc->max_req_size = mmc->max_seg_size;
-	mmc->max_phys_segs = mmc->max_hw_segs;
-
-	sock->card_event = tifm_sd_card_event;
-	sock->data_event = tifm_sd_data_event;
-	rc = tifm_sd_initialize_host(host);
-
-	if (!rc)
-		rc = mmc_add_host(mmc);
-	if (!rc)
-		return 0;
-
-	mmc_free_host(mmc);
-	return rc;
-}
-
-static void tifm_sd_remove(struct tifm_dev *sock)
-{
-	struct mmc_host *mmc = tifm_get_drvdata(sock);
-	struct tifm_sd *host = mmc_priv(mmc);
-	unsigned long flags;
-
-	spin_lock_irqsave(&sock->lock, flags);
-	host->eject = 1;
-	writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
-	mmiowb();
-	spin_unlock_irqrestore(&sock->lock, flags);
-
-	tasklet_kill(&host->finish_tasklet);
-
-	spin_lock_irqsave(&sock->lock, flags);
-	if (host->req) {
-		writel(TIFM_FIFO_INT_SETALL,
-		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
-		writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
-		host->req->cmd->error = MMC_ERR_TIMEOUT;
-		if (host->req->stop)
-			host->req->stop->error = MMC_ERR_TIMEOUT;
-		tasklet_schedule(&host->finish_tasklet);
-	}
-	spin_unlock_irqrestore(&sock->lock, flags);
-	mmc_remove_host(mmc);
-	dev_dbg(&sock->dev, "after remove\n");
-
-	/* The meaning of the bit majority in this constant is unknown. */
-	writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
-	       sock->addr + SOCK_CONTROL);
-
-	mmc_free_host(mmc);
-}
-
-#ifdef CONFIG_PM
-
-static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
-{
-	struct mmc_host *mmc = tifm_get_drvdata(sock);
-	int rc;
-
-	rc = mmc_suspend_host(mmc, state);
-	/* The meaning of the bit majority in this constant is unknown. */
-	writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
-	       sock->addr + SOCK_CONTROL);
-	return rc;
-}
-
-static int tifm_sd_resume(struct tifm_dev *sock)
-{
-	struct mmc_host *mmc = tifm_get_drvdata(sock);
-	struct tifm_sd *host = mmc_priv(mmc);
-	int rc;
-
-	rc = tifm_sd_initialize_host(host);
-	dev_dbg(&sock->dev, "resume initialize %d\n", rc);
-
-	if (rc)
-		host->eject = 1;
-	else
-		rc = mmc_resume_host(mmc);
-
-	return rc;
-}
-
-#else
-
-#define tifm_sd_suspend NULL
-#define tifm_sd_resume NULL
-
-#endif /* CONFIG_PM */
-
-static struct tifm_device_id tifm_sd_id_tbl[] = {
-	{ TIFM_TYPE_SD }, { }
-};
-
-static struct tifm_driver tifm_sd_driver = {
-	.driver = {
-		.name  = DRIVER_NAME,
-		.owner = THIS_MODULE
-	},
-	.id_table = tifm_sd_id_tbl,
-	.probe    = tifm_sd_probe,
-	.remove   = tifm_sd_remove,
-	.suspend  = tifm_sd_suspend,
-	.resume   = tifm_sd_resume
-};
-
-static int __init tifm_sd_init(void)
-{
-	return tifm_register_driver(&tifm_sd_driver);
-}
-
-static void __exit tifm_sd_exit(void)
-{
-	tifm_unregister_driver(&tifm_sd_driver);
-}
-
-MODULE_AUTHOR("Alex Dubov");
-MODULE_DESCRIPTION("TI FlashMedia SD driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl);
-MODULE_VERSION(DRIVER_VERSION);
-
-module_init(tifm_sd_init);
-module_exit(tifm_sd_exit);