mmc: Remove msm_sdcc driver

This driver is orphaned now that mach-msm has been removed.
Delete it.

Cc: Chris Ball <chris@printf.net>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

drivers/mmc/host/Kconfig

@@ -393,14 +393,6 @@ config MMC_SDHCI_MSM
 
 	  If unsure, say N.
 
-config MMC_MSM
-	tristate "Qualcomm SDCC Controller Support"
-	depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
-	help
-	  This provides support for the SD/MMC cell found in the
-	  MSM and QSD SOCs from Qualcomm. The controller also has
-	  support for SDIO devices.
-
 config MMC_MXC
 	tristate "Freescale i.MX21/27/31 or MPC512x Multimedia Card support"
 	depends on ARCH_MXC || PPC_MPC512x

drivers/mmc/host/Makefile

@@ -24,7 +24,6 @@ obj-$(CONFIG_MMC_OMAP)		+= omap.o
 obj-$(CONFIG_MMC_OMAP_HS)	+= omap_hsmmc.o
 obj-$(CONFIG_MMC_ATMELMCI)	+= atmel-mci.o
 obj-$(CONFIG_MMC_TIFM_SD)	+= tifm_sd.o
-obj-$(CONFIG_MMC_MSM)		+= msm_sdcc.o
 obj-$(CONFIG_MMC_MVSDIO)	+= mvsdio.o
 obj-$(CONFIG_MMC_DAVINCI)       += davinci_mmc.o
 obj-$(CONFIG_MMC_GOLDFISH)	+= android-goldfish.o

drivers/mmc/host/msm_sdcc.c

@@ -1,1474 +0,0 @@
-/*
- *  linux/drivers/mmc/host/msm_sdcc.c - Qualcomm MSM 7X00A SDCC Driver
- *
- *  Copyright (C) 2007 Google Inc,
- *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
- *  Copyright (C) 2009, Code Aurora Forum. 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.
- *
- * Based on mmci.c
- *
- * Author: San Mehat (san@android.com)
- *
- */
-
-#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/log2.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/card.h>
-#include <linux/mmc/sdio.h>
-#include <linux/clk.h>
-#include <linux/scatterlist.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/debugfs.h>
-#include <linux/io.h>
-#include <linux/memory.h>
-#include <linux/gfp.h>
-#include <linux/gpio.h>
-
-#include <asm/cacheflush.h>
-#include <asm/div64.h>
-#include <asm/sizes.h>
-
-#include <linux/platform_data/mmc-msm_sdcc.h>
-#include <mach/dma.h>
-#include <mach/clk.h>
-
-#include "msm_sdcc.h"
-
-#define DRIVER_NAME "msm-sdcc"
-
-#define BUSCLK_PWRSAVE 1
-#define BUSCLK_TIMEOUT (HZ)
-static unsigned int msmsdcc_fmin = 144000;
-static unsigned int msmsdcc_fmax = 50000000;
-static unsigned int msmsdcc_4bit = 1;
-static unsigned int msmsdcc_pwrsave = 1;
-static unsigned int msmsdcc_piopoll = 1;
-static unsigned int msmsdcc_sdioirq;
-
-#define PIO_SPINMAX 30
-#define CMD_SPINMAX 20
-
-
-static inline void
-msmsdcc_disable_clocks(struct msmsdcc_host *host, int deferr)
-{
-	WARN_ON(!host->clks_on);
-
-	BUG_ON(host->curr.mrq);
-
-	if (deferr) {
-		mod_timer(&host->busclk_timer, jiffies + BUSCLK_TIMEOUT);
-	} else {
-		del_timer_sync(&host->busclk_timer);
-		/* Need to check clks_on again in case the busclk
-		 * timer fired
-		 */
-		if (host->clks_on) {
-			clk_disable(host->clk);
-			clk_disable(host->pclk);
-			host->clks_on = 0;
-		}
-	}
-}
-
-static inline int
-msmsdcc_enable_clocks(struct msmsdcc_host *host)
-{
-	int rc;
-
-	del_timer_sync(&host->busclk_timer);
-
-	if (!host->clks_on) {
-		rc = clk_enable(host->pclk);
-		if (rc)
-			return rc;
-		rc = clk_enable(host->clk);
-		if (rc) {
-			clk_disable(host->pclk);
-			return rc;
-		}
-		udelay(1 + ((3 * USEC_PER_SEC) /
-		       (host->clk_rate ? host->clk_rate : msmsdcc_fmin)));
-		host->clks_on = 1;
-	}
-	return 0;
-}
-
-static inline unsigned int
-msmsdcc_readl(struct msmsdcc_host *host, unsigned int reg)
-{
-	return readl(host->base + reg);
-}
-
-static inline void
-msmsdcc_writel(struct msmsdcc_host *host, u32 data, unsigned int reg)
-{
-	writel(data, host->base + reg);
-	/* 3 clk delay required! */
-	udelay(1 + ((3 * USEC_PER_SEC) /
-	       (host->clk_rate ? host->clk_rate : msmsdcc_fmin)));
-}
-
-static void
-msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd,
-		      u32 c);
-
-static void msmsdcc_reset_and_restore(struct msmsdcc_host *host)
-{
-	u32	mci_clk = 0;
-	u32	mci_mask0 = 0;
-	int	ret = 0;
-
-	/* Save the controller state */
-	mci_clk = readl(host->base + MMCICLOCK);
-	mci_mask0 = readl(host->base + MMCIMASK0);
-
-	/* Reset the controller */
-	ret = clk_reset(host->clk, CLK_RESET_ASSERT);
-	if (ret)
-		pr_err("%s: Clock assert failed at %u Hz with err %d\n",
-				mmc_hostname(host->mmc), host->clk_rate, ret);
-
-	ret = clk_reset(host->clk, CLK_RESET_DEASSERT);
-	if (ret)
-		pr_err("%s: Clock deassert failed at %u Hz with err %d\n",
-				mmc_hostname(host->mmc), host->clk_rate, ret);
-
-	pr_info("%s: Controller has been re-initialiazed\n",
-			mmc_hostname(host->mmc));
-
-	/* Restore the contoller state */
-	writel(host->pwr, host->base + MMCIPOWER);
-	writel(mci_clk, host->base + MMCICLOCK);
-	writel(mci_mask0, host->base + MMCIMASK0);
-	ret = clk_set_rate(host->clk, host->clk_rate);
-	if (ret)
-		pr_err("%s: Failed to set clk rate %u Hz (%d)\n",
-				mmc_hostname(host->mmc), host->clk_rate, ret);
-}
-
-static void
-msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)
-{
-	BUG_ON(host->curr.data);
-
-	host->curr.mrq = NULL;
-	host->curr.cmd = NULL;
-
-	if (mrq->data)
-		mrq->data->bytes_xfered = host->curr.data_xfered;
-	if (mrq->cmd->error == -ETIMEDOUT)
-		mdelay(5);
-
-#if BUSCLK_PWRSAVE
-	msmsdcc_disable_clocks(host, 1);
-#endif
-	/*
-	 * 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
-msmsdcc_stop_data(struct msmsdcc_host *host)
-{
-	host->curr.data = NULL;
-	host->curr.got_dataend = 0;
-}
-
-uint32_t msmsdcc_fifo_addr(struct msmsdcc_host *host)
-{
-	return host->memres->start + MMCIFIFO;
-}
-
-static inline void
-msmsdcc_start_command_exec(struct msmsdcc_host *host, u32 arg, u32 c) {
-       msmsdcc_writel(host, arg, MMCIARGUMENT);
-       msmsdcc_writel(host, c, MMCICOMMAND);
-}
-
-static void
-msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd)
-{
-	struct msmsdcc_host *host = (struct msmsdcc_host *)cmd->data;
-
-	msmsdcc_writel(host, host->cmd_timeout, MMCIDATATIMER);
-	msmsdcc_writel(host, (unsigned int)host->curr.xfer_size,
-		       MMCIDATALENGTH);
-	msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
-			(~MCI_IRQ_PIO)) | host->cmd_pio_irqmask, MMCIMASK0);
-	msmsdcc_writel(host, host->cmd_datactrl, MMCIDATACTRL);
-
-	if (host->cmd_cmd) {
-		msmsdcc_start_command_exec(host,
-					   (u32) host->cmd_cmd->arg,
-					   (u32) host->cmd_c);
-	}
-	host->dma.active = 1;
-}
-
-static void
-msmsdcc_dma_complete_tlet(unsigned long data)
-{
-	struct msmsdcc_host *host = (struct msmsdcc_host *)data;
-	unsigned long		flags;
-	struct mmc_request	*mrq;
-	struct msm_dmov_errdata err;
-
-	spin_lock_irqsave(&host->lock, flags);
-	host->dma.active = 0;
-
-	err = host->dma.err;
-	mrq = host->curr.mrq;
-	BUG_ON(!mrq);
-	WARN_ON(!mrq->data);
-
-	if (!(host->dma.result & DMOV_RSLT_VALID)) {
-		pr_err("msmsdcc: Invalid DataMover result\n");
-		goto out;
-	}
-
-	if (host->dma.result & DMOV_RSLT_DONE) {
-		host->curr.data_xfered = host->curr.xfer_size;
-	} else {
-		/* Error or flush  */
-		if (host->dma.result & DMOV_RSLT_ERROR)
-			pr_err("%s: DMA error (0x%.8x)\n",
-			       mmc_hostname(host->mmc), host->dma.result);
-		if (host->dma.result & DMOV_RSLT_FLUSH)
-			pr_err("%s: DMA channel flushed (0x%.8x)\n",
-			       mmc_hostname(host->mmc), host->dma.result);
-
-		pr_err("Flush data: %.8x %.8x %.8x %.8x %.8x %.8x\n",
-		       err.flush[0], err.flush[1], err.flush[2],
-		       err.flush[3], err.flush[4], err.flush[5]);
-
-		msmsdcc_reset_and_restore(host);
-		if (!mrq->data->error)
-			mrq->data->error = -EIO;
-	}
-	dma_unmap_sg(mmc_dev(host->mmc), host->dma.sg, host->dma.num_ents,
-		     host->dma.dir);
-
-	host->dma.sg = NULL;
-	host->dma.busy = 0;
-
-	if (host->curr.got_dataend || mrq->data->error) {
-
-		/*
-		 * If we've already gotten our DATAEND / DATABLKEND
-		 * for this request, then complete it through here.
-		 */
-		msmsdcc_stop_data(host);
-
-		if (!mrq->data->error)
-			host->curr.data_xfered = host->curr.xfer_size;
-		if (!mrq->data->stop || mrq->cmd->error) {
-			host->curr.mrq = NULL;
-			host->curr.cmd = NULL;
-			mrq->data->bytes_xfered = host->curr.data_xfered;
-
-			spin_unlock_irqrestore(&host->lock, flags);
-#if BUSCLK_PWRSAVE
-			msmsdcc_disable_clocks(host, 1);
-#endif
-			mmc_request_done(host->mmc, mrq);
-			return;
-		} else
-			msmsdcc_start_command(host, mrq->data->stop, 0);
-	}
-
-out:
-	spin_unlock_irqrestore(&host->lock, flags);
-	return;
-}
-
-static void
-msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
-			  unsigned int result,
-			  struct msm_dmov_errdata *err)
-{
-	struct msmsdcc_dma_data	*dma_data =
-		container_of(cmd, struct msmsdcc_dma_data, hdr);
-	struct msmsdcc_host *host = dma_data->host;
-
-	dma_data->result = result;
-	if (err)
-		memcpy(&dma_data->err, err, sizeof(struct msm_dmov_errdata));
-
-	tasklet_schedule(&host->dma_tlet);
-}
-
-static int validate_dma(struct msmsdcc_host *host, struct mmc_data *data)
-{
-	if (host->dma.channel == -1)
-		return -ENOENT;
-
-	if ((data->blksz * data->blocks) < MCI_FIFOSIZE)
-		return -EINVAL;
-	if ((data->blksz * data->blocks) % MCI_FIFOSIZE)
-		return -EINVAL;
-	return 0;
-}
-
-static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
-{
-	struct msmsdcc_nc_dmadata *nc;
-	dmov_box *box;
-	uint32_t rows;
-	uint32_t crci;
-	unsigned int n;
-	int i, rc;
-	struct scatterlist *sg = data->sg;
-
-	rc = validate_dma(host, data);
-	if (rc)
-		return rc;
-
-	host->dma.sg = data->sg;
-	host->dma.num_ents = data->sg_len;
-
-       BUG_ON(host->dma.num_ents > NR_SG); /* Prevent memory corruption */
-
-	nc = host->dma.nc;
-
-	switch (host->pdev_id) {
-	case 1:
-		crci = MSMSDCC_CRCI_SDC1;
-		break;
-	case 2:
-		crci = MSMSDCC_CRCI_SDC2;
-		break;
-	case 3:
-		crci = MSMSDCC_CRCI_SDC3;
-		break;
-	case 4:
-		crci = MSMSDCC_CRCI_SDC4;
-		break;
-	default:
-		host->dma.sg = NULL;
-		host->dma.num_ents = 0;
-		return -ENOENT;
-	}
-
-	if (data->flags & MMC_DATA_READ)
-		host->dma.dir = DMA_FROM_DEVICE;
-	else
-		host->dma.dir = DMA_TO_DEVICE;
-
-	host->curr.user_pages = 0;
-
-	box = &nc->cmd[0];
-
-	/* location of command block must be 64 bit aligned */
-	BUG_ON(host->dma.cmd_busaddr & 0x07);
-
-	nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
-	host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
-			       DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
-	host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
-
-	n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
-			host->dma.num_ents, host->dma.dir);
-	if (n == 0) {
-		pr_err("%s: Unable to map in all sg elements\n",
-			mmc_hostname(host->mmc));
-		host->dma.sg = NULL;
-		host->dma.num_ents = 0;
-		return -ENOMEM;
-	}
-
-	for_each_sg(host->dma.sg, sg, n, i) {
-
-		box->cmd = CMD_MODE_BOX;
-
-		if (i == n - 1)
-			box->cmd |= CMD_LC;
-		rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ?
-			(sg_dma_len(sg) / MCI_FIFOSIZE) + 1 :
-			(sg_dma_len(sg) / MCI_FIFOSIZE) ;
-
-		if (data->flags & MMC_DATA_READ) {
-			box->src_row_addr = msmsdcc_fifo_addr(host);
-			box->dst_row_addr = sg_dma_address(sg);
-
-			box->src_dst_len = (MCI_FIFOSIZE << 16) |
-					   (MCI_FIFOSIZE);
-			box->row_offset = MCI_FIFOSIZE;
-
-			box->num_rows = rows * ((1 << 16) + 1);
-			box->cmd |= CMD_SRC_CRCI(crci);
-		} else {
-			box->src_row_addr = sg_dma_address(sg);
-			box->dst_row_addr = msmsdcc_fifo_addr(host);
-
-			box->src_dst_len = (MCI_FIFOSIZE << 16) |
-					   (MCI_FIFOSIZE);
-			box->row_offset = (MCI_FIFOSIZE << 16);
-
-			box->num_rows = rows * ((1 << 16) + 1);
-			box->cmd |= CMD_DST_CRCI(crci);
-		}
-		box++;
-	}
-
-	return 0;
-}
-
-static int
-snoop_cccr_abort(struct mmc_command *cmd)
-{
-	if ((cmd->opcode == 52) &&
-	    (cmd->arg & 0x80000000) &&
-	    (((cmd->arg >> 9) & 0x1ffff) == SDIO_CCCR_ABORT))
-		return 1;
-	return 0;
-}
-
-static void
-msmsdcc_start_command_deferred(struct msmsdcc_host *host,
-				struct mmc_command *cmd, u32 *c)
-{
-	*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;
-
-	if ((((cmd->opcode == 17) || (cmd->opcode == 18))  ||
-	     ((cmd->opcode == 24) || (cmd->opcode == 25))) ||
-	      (cmd->opcode == 53))
-		*c |= MCI_CSPM_DATCMD;
-
-	if (host->prog_scan && (cmd->opcode == 12)) {
-		*c |= MCI_CPSM_PROGENA;
-		host->prog_enable = true;
-	}
-
-	if (cmd == cmd->mrq->stop)
-		*c |= MCI_CSPM_MCIABORT;
-
-	if (snoop_cccr_abort(cmd))
-		*c |= MCI_CSPM_MCIABORT;
-
-	if (host->curr.cmd != NULL) {
-		pr_err("%s: Overlapping command requests\n",
-			mmc_hostname(host->mmc));
-	}
-	host->curr.cmd = cmd;
-}
-
-static void
-msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
-			struct mmc_command *cmd, u32 c)
-{
-	unsigned int datactrl, timeout;
-	unsigned long long clks;
-	unsigned int pio_irqmask = 0;
-
-	host->curr.data = data;
-	host->curr.xfer_size = data->blksz * data->blocks;
-	host->curr.xfer_remain = host->curr.xfer_size;
-	host->curr.data_xfered = 0;
-	host->curr.got_dataend = 0;
-
-	memset(&host->pio, 0, sizeof(host->pio));
-
-	datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);
-
-	if (!msmsdcc_config_dma(host, data))
-		datactrl |= MCI_DPSM_DMAENABLE;
-	else {
-		host->pio.sg = data->sg;
-		host->pio.sg_len = data->sg_len;
-		host->pio.sg_off = 0;
-
-		if (data->flags & MMC_DATA_READ) {
-			pio_irqmask = MCI_RXFIFOHALFFULLMASK;
-			if (host->curr.xfer_remain < MCI_FIFOSIZE)
-				pio_irqmask |= MCI_RXDATAAVLBLMASK;
-		} else
-			pio_irqmask = MCI_TXFIFOHALFEMPTYMASK;
-	}
-
-	if (data->flags & MMC_DATA_READ)
-		datactrl |= MCI_DPSM_DIRECTION;
-
-	clks = (unsigned long long)data->timeout_ns * host->clk_rate;
-	do_div(clks, NSEC_PER_SEC);
-	timeout = data->timeout_clks + (unsigned int)clks*2 ;
-
-	if (datactrl & MCI_DPSM_DMAENABLE) {
-		/* Save parameters for the exec function */
-		host->cmd_timeout = timeout;
-		host->cmd_pio_irqmask = pio_irqmask;
-		host->cmd_datactrl = datactrl;
-		host->cmd_cmd = cmd;
-
-		host->dma.hdr.execute_func = msmsdcc_dma_exec_func;
-		host->dma.hdr.data = (void *)host;
-		host->dma.busy = 1;
-
-		if (cmd) {
-			msmsdcc_start_command_deferred(host, cmd, &c);
-			host->cmd_c = c;
-		}
-		msm_dmov_enqueue_cmd(host->dma.channel, &host->dma.hdr);
-		if (data->flags & MMC_DATA_WRITE)
-			host->prog_scan = true;
-	} else {
-		msmsdcc_writel(host, timeout, MMCIDATATIMER);
-
-		msmsdcc_writel(host, host->curr.xfer_size, MMCIDATALENGTH);
-
-		msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
-				(~MCI_IRQ_PIO)) | pio_irqmask, MMCIMASK0);
-
-		msmsdcc_writel(host, datactrl, MMCIDATACTRL);
-
-		if (cmd) {
-			/* Daisy-chain the command if requested */
-			msmsdcc_start_command(host, cmd, c);
-		}
-	}
-}
-
-static void
-msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd, u32 c)
-{
-	if (cmd == cmd->mrq->stop)
-		c |= MCI_CSPM_MCIABORT;
-
-	host->stats.cmds++;
-
-	msmsdcc_start_command_deferred(host, cmd, &c);
-	msmsdcc_start_command_exec(host, cmd->arg, c);
-}
-
-static void
-msmsdcc_data_err(struct msmsdcc_host *host, struct mmc_data *data,
-		 unsigned int status)
-{
-	if (status & MCI_DATACRCFAIL) {
-		pr_err("%s: Data CRC error\n", mmc_hostname(host->mmc));
-		pr_err("%s: opcode 0x%.8x\n", __func__,
-		       data->mrq->cmd->opcode);
-		pr_err("%s: blksz %d, blocks %d\n", __func__,
-		       data->blksz, data->blocks);
-		data->error = -EILSEQ;
-	} else if (status & MCI_DATATIMEOUT) {
-		pr_err("%s: Data timeout\n", mmc_hostname(host->mmc));
-		data->error = -ETIMEDOUT;
-	} else if (status & MCI_RXOVERRUN) {
-		pr_err("%s: RX overrun\n", mmc_hostname(host->mmc));
-		data->error = -EIO;
-	} else if (status & MCI_TXUNDERRUN) {
-		pr_err("%s: TX underrun\n", mmc_hostname(host->mmc));
-		data->error = -EIO;
-	} else {
-		pr_err("%s: Unknown error (0x%.8x)\n",
-		       mmc_hostname(host->mmc), status);
-		data->error = -EIO;
-	}
-}
-
-
-static int
-msmsdcc_pio_read(struct msmsdcc_host *host, char *buffer, unsigned int remain)
-{
-	uint32_t	*ptr = (uint32_t *) buffer;
-	int		count = 0;
-
-	if (remain % 4)
-		remain = ((remain >> 2) + 1) << 2;
-
-	while (msmsdcc_readl(host, MMCISTATUS) & MCI_RXDATAAVLBL) {
-		*ptr = msmsdcc_readl(host, MMCIFIFO + (count % MCI_FIFOSIZE));
-		ptr++;
-		count += sizeof(uint32_t);
-
-		remain -=  sizeof(uint32_t);
-		if (remain == 0)
-			break;
-	}
-	return count;
-}
-
-static int
-msmsdcc_pio_write(struct msmsdcc_host *host, char *buffer,
-		  unsigned int remain, u32 status)
-{
-	void __iomem *base = host->base;
-	char *ptr = buffer;
-
-	do {
-		unsigned int count, maxcnt, sz;
-
-		maxcnt = status & MCI_TXFIFOEMPTY ? MCI_FIFOSIZE :
-						    MCI_FIFOHALFSIZE;
-		count = min(remain, maxcnt);
-
-		sz = count % 4 ? (count >> 2) + 1 : (count >> 2);
-		writesl(base + MMCIFIFO, ptr, sz);
-		ptr += count;
-		remain -= count;
-
-		if (remain == 0)
-			break;
-
-		status = msmsdcc_readl(host, MMCISTATUS);
-	} while (status & MCI_TXFIFOHALFEMPTY);
-
-	return ptr - buffer;
-}
-
-static int
-msmsdcc_spin_on_status(struct msmsdcc_host *host, uint32_t mask, int maxspin)
-{
-	while (maxspin) {
-		if ((msmsdcc_readl(host, MMCISTATUS) & mask))
-			return 0;
-		udelay(1);
-		--maxspin;
-	}
-	return -ETIMEDOUT;
-}
-
-static irqreturn_t
-msmsdcc_pio_irq(int irq, void *dev_id)
-{
-	struct msmsdcc_host	*host = dev_id;
-	uint32_t		status;
-	u32 mci_mask0;
-
-	status = msmsdcc_readl(host, MMCISTATUS);
-	mci_mask0 = msmsdcc_readl(host, MMCIMASK0);
-
-	if (((mci_mask0 & status) & MCI_IRQ_PIO) == 0)
-		return IRQ_NONE;
-
-	do {
-		unsigned long flags;
-		unsigned int remain, len;
-		char *buffer;
-
-		if (!(status & (MCI_TXFIFOHALFEMPTY | MCI_RXDATAAVLBL))) {
-			if (host->curr.xfer_remain == 0 || !msmsdcc_piopoll)
-				break;
-
-			if (msmsdcc_spin_on_status(host,
-						   (MCI_TXFIFOHALFEMPTY |
-						   MCI_RXDATAAVLBL),
-						   PIO_SPINMAX)) {
-				break;
-			}
-		}
-
-		/* Map the current scatter buffer */
-		local_irq_save(flags);
-		buffer = kmap_atomic(sg_page(host->pio.sg))
-				     + host->pio.sg->offset;
-		buffer += host->pio.sg_off;
-		remain = host->pio.sg->length - host->pio.sg_off;
-		len = 0;
-		if (status & MCI_RXACTIVE)
-			len = msmsdcc_pio_read(host, buffer, remain);
-		if (status & MCI_TXACTIVE)
-			len = msmsdcc_pio_write(host, buffer, remain, status);
-
-		/* Unmap the buffer */
-		kunmap_atomic(buffer);
-		local_irq_restore(flags);
-
-		host->pio.sg_off += len;
-		host->curr.xfer_remain -= len;
-		host->curr.data_xfered += len;
-		remain -= len;
-
-		if (remain == 0) {
-			/* This sg page is full - do some housekeeping */
-			if (status & MCI_RXACTIVE && host->curr.user_pages)
-				flush_dcache_page(sg_page(host->pio.sg));
-
-			if (!--host->pio.sg_len) {
-				memset(&host->pio, 0, sizeof(host->pio));
-				break;
-			}
-
-			/* Advance to next sg */
-			host->pio.sg++;
-			host->pio.sg_off = 0;
-		}
-
-		status = msmsdcc_readl(host, MMCISTATUS);
-	} while (1);
-
-	if (status & MCI_RXACTIVE && host->curr.xfer_remain < MCI_FIFOSIZE)
-		msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) |
-					MCI_RXDATAAVLBLMASK, MMCIMASK0);
-
-	if (!host->curr.xfer_remain)
-		msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | 0,
-					MMCIMASK0);
-
-	return IRQ_HANDLED;
-}
-
-static void msmsdcc_do_cmdirq(struct msmsdcc_host *host, uint32_t status)
-{
-	struct mmc_command *cmd = host->curr.cmd;
-
-	host->curr.cmd = NULL;
-	cmd->resp[0] = msmsdcc_readl(host, MMCIRESPONSE0);
-	cmd->resp[1] = msmsdcc_readl(host, MMCIRESPONSE1);
-	cmd->resp[2] = msmsdcc_readl(host, MMCIRESPONSE2);
-	cmd->resp[3] = msmsdcc_readl(host, MMCIRESPONSE3);
-
-	if (status & MCI_CMDTIMEOUT) {
-		cmd->error = -ETIMEDOUT;
-	} else if (status & MCI_CMDCRCFAIL &&
-		   cmd->flags & MMC_RSP_CRC) {
-		pr_err("%s: Command CRC error\n", mmc_hostname(host->mmc));
-		cmd->error = -EILSEQ;
-	}
-
-	if (!cmd->data || cmd->error) {
-		if (host->curr.data && host->dma.sg)
-			msm_dmov_stop_cmd(host->dma.channel,
-					  &host->dma.hdr, 0);
-		else if (host->curr.data) { /* Non DMA */
-			msmsdcc_reset_and_restore(host);
-			msmsdcc_stop_data(host);
-			msmsdcc_request_end(host, cmd->mrq);
-		} else { /* host->data == NULL */
-			if (!cmd->error && host->prog_enable) {
-				if (status & MCI_PROGDONE) {
-					host->prog_scan = false;
-					host->prog_enable = false;
-					msmsdcc_request_end(host, cmd->mrq);
-				} else {
-					host->curr.cmd = cmd;
-				}
-			} else {
-				if (host->prog_enable) {
-					host->prog_scan = false;
-					host->prog_enable = false;
-				}
-				msmsdcc_request_end(host, cmd->mrq);
-			}
-		}
-	} else if (cmd->data)
-		if (!(cmd->data->flags & MMC_DATA_READ))
-			msmsdcc_start_data(host, cmd->data,
-						NULL, 0);
-}
-
-static void
-msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
-			void __iomem *base)
-{
-	struct mmc_data *data = host->curr.data;
-
-	if (status & (MCI_CMDSENT | MCI_CMDRESPEND | MCI_CMDCRCFAIL |
-			MCI_CMDTIMEOUT | MCI_PROGDONE) && host->curr.cmd) {
-		msmsdcc_do_cmdirq(host, status);
-	}
-
-	if (!data)
-		return;
-
-	/* Check for data errors */
-	if (status & (MCI_DATACRCFAIL | MCI_DATATIMEOUT |
-		      MCI_TXUNDERRUN | MCI_RXOVERRUN)) {
-		msmsdcc_data_err(host, data, status);
-		host->curr.data_xfered = 0;
-		if (host->dma.sg)
-			msm_dmov_stop_cmd(host->dma.channel,
-					  &host->dma.hdr, 0);
-		else {
-			msmsdcc_reset_and_restore(host);
-			if (host->curr.data)
-				msmsdcc_stop_data(host);
-			if (!data->stop)
-				msmsdcc_request_end(host, data->mrq);
-			else
-				msmsdcc_start_command(host, data->stop, 0);
-		}
-	}
-
-	/* Check for data done */
-	if (!host->curr.got_dataend && (status & MCI_DATAEND))
-		host->curr.got_dataend = 1;
-
-	/*
-	 * If DMA is still in progress, we complete via the completion handler
-	 */
-	if (host->curr.got_dataend && !host->dma.busy) {
-		/*
-		 * There appears to be an issue in the controller where
-		 * if you request a small block transfer (< fifo size),
-		 * you may get your DATAEND/DATABLKEND irq without the
-		 * PIO data irq.
-		 *
-		 * Check to see if there is still data to be read,
-		 * and simulate a PIO irq.
-		 */
-		if (readl(base + MMCISTATUS) & MCI_RXDATAAVLBL)
-			msmsdcc_pio_irq(1, host);
-
-		msmsdcc_stop_data(host);
-		if (!data->error)
-			host->curr.data_xfered = host->curr.xfer_size;
-
-		if (!data->stop)
-			msmsdcc_request_end(host, data->mrq);
-		else
-			msmsdcc_start_command(host, data->stop, 0);
-	}
-}
-
-static irqreturn_t
-msmsdcc_irq(int irq, void *dev_id)
-{
-	struct msmsdcc_host	*host = dev_id;
-	void __iomem		*base = host->base;
-	u32			status;
-	int			ret = 0;
-	int			cardint = 0;
-
-	spin_lock(&host->lock);
-
-	do {
-		status = msmsdcc_readl(host, MMCISTATUS);
-		status &= msmsdcc_readl(host, MMCIMASK0);
-		if ((status & (~MCI_IRQ_PIO)) == 0)
-			break;
-		msmsdcc_writel(host, status, MMCICLEAR);
-
-		if (status & MCI_SDIOINTR)
-			status &= ~MCI_SDIOINTR;
-
-		if (!status)
-			break;
-
-		msmsdcc_handle_irq_data(host, status, base);
-
-		if (status & MCI_SDIOINTOPER) {
-			cardint = 1;
-			status &= ~MCI_SDIOINTOPER;
-		}
-		ret = 1;
-	} while (status);
-
-	spin_unlock(&host->lock);
-
-	/*
-	 * We have to delay handling the card interrupt as it calls
-	 * back into the driver.
-	 */
-	if (cardint)
-		mmc_signal_sdio_irq(host->mmc);
-
-	return IRQ_RETVAL(ret);
-}
-
-static void
-msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
-	struct msmsdcc_host *host = mmc_priv(mmc);
-	unsigned long flags;
-
-	WARN_ON(host->curr.mrq != NULL);
-	WARN_ON(host->pwr == 0);
-
-	spin_lock_irqsave(&host->lock, flags);
-
-	host->stats.reqs++;
-
-	if (host->eject) {
-		if (mrq->data && !(mrq->data->flags & MMC_DATA_READ)) {
-			mrq->cmd->error = 0;
-			mrq->data->bytes_xfered = mrq->data->blksz *
-						  mrq->data->blocks;
-		} else
-			mrq->cmd->error = -ENOMEDIUM;
-
-		spin_unlock_irqrestore(&host->lock, flags);
-		mmc_request_done(mmc, mrq);
-		return;
-	}
-
-	msmsdcc_enable_clocks(host);
-
-	host->curr.mrq = mrq;
-
-	if (mrq->data && mrq->data->flags & MMC_DATA_READ)
-		/* Queue/read data, daisy-chain command when data starts */
-		msmsdcc_start_data(host, mrq->data, mrq->cmd, 0);
-	else
-		msmsdcc_start_command(host, mrq->cmd, 0);
-
-	if (host->cmdpoll && !msmsdcc_spin_on_status(host,
-				MCI_CMDRESPEND|MCI_CMDCRCFAIL|MCI_CMDTIMEOUT,
-				CMD_SPINMAX)) {
-		uint32_t status = msmsdcc_readl(host, MMCISTATUS);
-		msmsdcc_do_cmdirq(host, status);
-		msmsdcc_writel(host,
-			       MCI_CMDRESPEND | MCI_CMDCRCFAIL | MCI_CMDTIMEOUT,
-			       MMCICLEAR);
-		host->stats.cmdpoll_hits++;
-	} else {
-		host->stats.cmdpoll_misses++;
-	}
-	spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable)
-{
-	struct msm_mmc_gpio_data *curr;
-	int i, rc = 0;
-
-	if (!host->plat->gpio_data || host->gpio_config_status == enable)
-		return;
-
-	curr = host->plat->gpio_data;
-	for (i = 0; i < curr->size; i++) {
-		if (enable) {
-			rc = gpio_request(curr->gpio[i].no,
-						curr->gpio[i].name);
-			if (rc) {
-				pr_err("%s: gpio_request(%d, %s) failed %d\n",
-					mmc_hostname(host->mmc),
-					curr->gpio[i].no,
-					curr->gpio[i].name, rc);
-				goto free_gpios;
-			}
-		} else {
-			gpio_free(curr->gpio[i].no);
-		}
-	}
-	host->gpio_config_status = enable;
-	return;
-
-free_gpios:
-	for (; i >= 0; i--)
-		gpio_free(curr->gpio[i].no);
-}
-
-static void
-msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
-	struct msmsdcc_host *host = mmc_priv(mmc);
-	u32 clk = 0, pwr = 0;
-	int rc;
-	unsigned long flags;
-
-	spin_lock_irqsave(&host->lock, flags);
-
-	msmsdcc_enable_clocks(host);
-
-	spin_unlock_irqrestore(&host->lock, flags);
-
-	if (ios->clock) {
-		if (ios->clock != host->clk_rate) {
-			rc = clk_set_rate(host->clk, ios->clock);
-			if (rc < 0)
-				pr_err("%s: Error setting clock rate (%d)\n",
-				       mmc_hostname(host->mmc), rc);
-			else
-				host->clk_rate = ios->clock;
-		}
-		clk |= MCI_CLK_ENABLE;
-	}
-
-	if (ios->bus_width == MMC_BUS_WIDTH_4)
-		clk |= (2 << 10); /* Set WIDEBUS */
-
-	if (ios->clock > 400000 && msmsdcc_pwrsave)
-		clk |= (1 << 9); /* PWRSAVE */
-
-	clk |= (1 << 12); /* FLOW_ENA */
-	clk |= (1 << 15); /* feedback clock */
-
-	if (host->plat->translate_vdd)
-		pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd);
-
-	switch (ios->power_mode) {
-	case MMC_POWER_OFF:
-		msmsdcc_setup_gpio(host, false);
-		break;
-	case MMC_POWER_UP:
-		pwr |= MCI_PWR_UP;
-		msmsdcc_setup_gpio(host, true);
-		break;
-	case MMC_POWER_ON:
-		pwr |= MCI_PWR_ON;
-		break;
-	}
-
-	if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
-		pwr |= MCI_OD;
-
-	msmsdcc_writel(host, clk, MMCICLOCK);
-
-	if (host->pwr != pwr) {
-		host->pwr = pwr;
-		msmsdcc_writel(host, pwr, MMCIPOWER);
-	}
-#if BUSCLK_PWRSAVE
-	spin_lock_irqsave(&host->lock, flags);
-	msmsdcc_disable_clocks(host, 1);
-	spin_unlock_irqrestore(&host->lock, flags);
-#endif
-}
-
-static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable)
-{
-	struct msmsdcc_host *host = mmc_priv(mmc);
-	unsigned long flags;
-	u32 status;
-
-	spin_lock_irqsave(&host->lock, flags);
-	if (msmsdcc_sdioirq == 1) {
-		status = msmsdcc_readl(host, MMCIMASK0);
-		if (enable)
-			status |= MCI_SDIOINTOPERMASK;
-		else
-			status &= ~MCI_SDIOINTOPERMASK;
-		host->saved_irq0mask = status;
-		msmsdcc_writel(host, status, MMCIMASK0);
-	}
-	spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void msmsdcc_init_card(struct mmc_host *mmc, struct mmc_card *card)
-{
-	struct msmsdcc_host *host = mmc_priv(mmc);
-
-	if (host->plat->init_card)
-		host->plat->init_card(card);
-}
-
-static const struct mmc_host_ops msmsdcc_ops = {
-	.request	= msmsdcc_request,
-	.set_ios	= msmsdcc_set_ios,
-	.enable_sdio_irq = msmsdcc_enable_sdio_irq,
-	.init_card	= msmsdcc_init_card,
-};
-
-static void
-msmsdcc_check_status(unsigned long data)
-{
-	struct msmsdcc_host *host = (struct msmsdcc_host *)data;
-	unsigned int status;
-
-	if (!host->plat->status) {
-		mmc_detect_change(host->mmc, 0);
-		goto out;
-	}
-
-	status = host->plat->status(mmc_dev(host->mmc));
-	host->eject = !status;
-	if (status ^ host->oldstat) {
-		pr_info("%s: Slot status change detected (%d -> %d)\n",
-			mmc_hostname(host->mmc), host->oldstat, status);
-		if (status)
-			mmc_detect_change(host->mmc, (5 * HZ) / 2);
-		else
-			mmc_detect_change(host->mmc, 0);
-	}
-
-	host->oldstat = status;
-
-out:
-	if (host->timer.function)
-		mod_timer(&host->timer, jiffies + HZ);
-}
-
-static irqreturn_t
-msmsdcc_platform_status_irq(int irq, void *dev_id)
-{
-	struct msmsdcc_host *host = dev_id;
-
-	pr_debug("%s: %d\n", __func__, irq);
-	msmsdcc_check_status((unsigned long) host);
-	return IRQ_HANDLED;
-}
-
-static void
-msmsdcc_status_notify_cb(int card_present, void *dev_id)
-{
-	struct msmsdcc_host *host = dev_id;
-
-	pr_debug("%s: card_present %d\n", mmc_hostname(host->mmc),
-	       card_present);
-	msmsdcc_check_status((unsigned long) host);
-}
-
-static void
-msmsdcc_busclk_expired(unsigned long _data)
-{
-	struct msmsdcc_host	*host = (struct msmsdcc_host *) _data;
-
-	if (host->clks_on)
-		msmsdcc_disable_clocks(host, 0);
-}
-
-static int
-msmsdcc_init_dma(struct msmsdcc_host *host)
-{
-	memset(&host->dma, 0, sizeof(struct msmsdcc_dma_data));
-	host->dma.host = host;
-	host->dma.channel = -1;
-
-	if (!host->dmares)
-		return -ENODEV;
-
-	host->dma.nc = dma_alloc_coherent(NULL,
-					  sizeof(struct msmsdcc_nc_dmadata),
-					  &host->dma.nc_busaddr,
-					  GFP_KERNEL);
-	if (host->dma.nc == NULL) {
-		pr_err("Unable to allocate DMA buffer\n");
-		return -ENOMEM;
-	}
-	memset(host->dma.nc, 0x00, sizeof(struct msmsdcc_nc_dmadata));
-	host->dma.cmd_busaddr = host->dma.nc_busaddr;
-	host->dma.cmdptr_busaddr = host->dma.nc_busaddr +
-				offsetof(struct msmsdcc_nc_dmadata, cmdptr);
-	host->dma.channel = host->dmares->start;
-
-	return 0;
-}
-
-static int
-msmsdcc_probe(struct platform_device *pdev)
-{
-	struct msm_mmc_platform_data *plat = pdev->dev.platform_data;
-	struct msmsdcc_host *host;
-	struct mmc_host *mmc;
-	struct resource *cmd_irqres = NULL;
-	struct resource *stat_irqres = NULL;
-	struct resource *memres = NULL;
-	struct resource *dmares = NULL;
-	int ret;
-
-	/* must have platform data */
-	if (!plat) {
-		pr_err("%s: Platform data not available\n", __func__);
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (pdev->id < 1 || pdev->id > 4)
-		return -EINVAL;
-
-	if (pdev->resource == NULL || pdev->num_resources < 2) {
-		pr_err("%s: Invalid resource\n", __func__);
-		return -ENXIO;
-	}
-
-	memres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	cmd_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-						  "cmd_irq");
-	stat_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-						   "status_irq");
-
-	if (!cmd_irqres || !memres) {
-		pr_err("%s: Invalid resource\n", __func__);
-		return -ENXIO;
-	}
-
-	/*
-	 * Setup our host structure
-	 */
-
-	mmc = mmc_alloc_host(sizeof(struct msmsdcc_host), &pdev->dev);
-	if (!mmc) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	host = mmc_priv(mmc);
-	host->pdev_id = pdev->id;
-	host->plat = plat;
-	host->mmc = mmc;
-	host->curr.cmd = NULL;
-	init_timer(&host->busclk_timer);
-	host->busclk_timer.data = (unsigned long) host;
-	host->busclk_timer.function = msmsdcc_busclk_expired;
-
-
-	host->cmdpoll = 1;
-
-	host->base = ioremap(memres->start, PAGE_SIZE);
-	if (!host->base) {
-		ret = -ENOMEM;
-		goto host_free;
-	}
-
-	host->cmd_irqres = cmd_irqres;
-	host->memres = memres;
-	host->dmares = dmares;
-	spin_lock_init(&host->lock);
-
-	tasklet_init(&host->dma_tlet, msmsdcc_dma_complete_tlet,
-			(unsigned long)host);
-
-	/*
-	 * Setup DMA
-	 */
-	if (host->dmares) {
-		ret = msmsdcc_init_dma(host);
-		if (ret)
-			goto ioremap_free;
-	} else {
-		host->dma.channel = -1;
-	}
-
-	/* Get our clocks */
-	host->pclk = clk_get(&pdev->dev, "sdc_pclk");
-	if (IS_ERR(host->pclk)) {
-		ret = PTR_ERR(host->pclk);
-		goto dma_free;
-	}
-
-	host->clk = clk_get(&pdev->dev, "sdc_clk");
-	if (IS_ERR(host->clk)) {
-		ret = PTR_ERR(host->clk);
-		goto pclk_put;
-	}
-
-	ret = clk_set_rate(host->clk, msmsdcc_fmin);
-	if (ret) {
-		pr_err("%s: Clock rate set failed (%d)\n", __func__, ret);
-		goto clk_put;
-	}
-
-	ret = clk_prepare(host->pclk);
-	if (ret)
-		goto clk_put;
-
-	ret = clk_prepare(host->clk);
-	if (ret)
-		goto clk_unprepare_p;
-
-	/* Enable clocks */
-	ret = msmsdcc_enable_clocks(host);
-	if (ret)
-		goto clk_unprepare;
-
-	host->pclk_rate = clk_get_rate(host->pclk);
-	host->clk_rate = clk_get_rate(host->clk);
-
-	/*
-	 * Setup MMC host structure
-	 */
-	mmc->ops = &msmsdcc_ops;
-	mmc->f_min = msmsdcc_fmin;
-	mmc->f_max = msmsdcc_fmax;
-	mmc->ocr_avail = plat->ocr_mask;
-
-	if (msmsdcc_4bit)
-		mmc->caps |= MMC_CAP_4_BIT_DATA;
-	if (msmsdcc_sdioirq)
-		mmc->caps |= MMC_CAP_SDIO_IRQ;
-	mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
-
-	mmc->max_segs = NR_SG;
-	mmc->max_blk_size = 4096;	/* MCI_DATA_CTL BLOCKSIZE up to 4096 */
-	mmc->max_blk_count = 65536;
-
-	mmc->max_req_size = 33554432;	/* MCI_DATA_LENGTH is 25 bits */
-	mmc->max_seg_size = mmc->max_req_size;
-
-	msmsdcc_writel(host, 0, MMCIMASK0);
-	msmsdcc_writel(host, 0x5e007ff, MMCICLEAR);
-
-	msmsdcc_writel(host, MCI_IRQENABLE, MMCIMASK0);
-	host->saved_irq0mask = MCI_IRQENABLE;
-
-	/*
-	 * Setup card detect change
-	 */
-
-	memset(&host->timer, 0, sizeof(host->timer));
-
-	if (stat_irqres && !(stat_irqres->flags & IORESOURCE_DISABLED)) {
-		unsigned long irqflags = IRQF_SHARED |
-			(stat_irqres->flags & IRQF_TRIGGER_MASK);
-
-		host->stat_irq = stat_irqres->start;
-		ret = request_irq(host->stat_irq,
-				  msmsdcc_platform_status_irq,
-				  irqflags,
-				  DRIVER_NAME " (slot)",
-				  host);
-		if (ret) {
-			pr_err("%s: Unable to get slot IRQ %d (%d)\n",
-			       mmc_hostname(mmc), host->stat_irq, ret);
-			goto clk_disable;
-		}
-	} else if (plat->register_status_notify) {
-		plat->register_status_notify(msmsdcc_status_notify_cb, host);
-	} else if (!plat->status)
-		pr_err("%s: No card detect facilities available\n",
-		       mmc_hostname(mmc));
-	else {
-		init_timer(&host->timer);
-		host->timer.data = (unsigned long)host;
-		host->timer.function = msmsdcc_check_status;
-		host->timer.expires = jiffies + HZ;
-		add_timer(&host->timer);
-	}
-
-	if (plat->status) {
-		host->oldstat = host->plat->status(mmc_dev(host->mmc));
-		host->eject = !host->oldstat;
-	}
-
-	ret = request_irq(cmd_irqres->start, msmsdcc_irq, IRQF_SHARED,
-			  DRIVER_NAME " (cmd)", host);
-	if (ret)
-		goto stat_irq_free;
-
-	ret = request_irq(cmd_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
-			  DRIVER_NAME " (pio)", host);
-	if (ret)
-		goto cmd_irq_free;
-
-	platform_set_drvdata(pdev, mmc);
-	mmc_add_host(mmc);
-
-	pr_info("%s: Qualcomm MSM SDCC at 0x%016llx irq %d,%d dma %d\n",
-		mmc_hostname(mmc), (unsigned long long)memres->start,
-		(unsigned int) cmd_irqres->start,
-		(unsigned int) host->stat_irq, host->dma.channel);
-	pr_info("%s: 4 bit data mode %s\n", mmc_hostname(mmc),
-		(mmc->caps & MMC_CAP_4_BIT_DATA ? "enabled" : "disabled"));
-	pr_info("%s: MMC clock %u -> %u Hz, PCLK %u Hz\n",
-		mmc_hostname(mmc), msmsdcc_fmin, msmsdcc_fmax, host->pclk_rate);
-	pr_info("%s: Slot eject status = %d\n", mmc_hostname(mmc), host->eject);
-	pr_info("%s: Power save feature enable = %d\n",
-		mmc_hostname(mmc), msmsdcc_pwrsave);
-
-	if (host->dma.channel != -1) {
-		pr_info("%s: DM non-cached buffer at %p, dma_addr 0x%.8x\n",
-			mmc_hostname(mmc), host->dma.nc, host->dma.nc_busaddr);
-		pr_info("%s: DM cmd busaddr 0x%.8x, cmdptr busaddr 0x%.8x\n",
-			mmc_hostname(mmc), host->dma.cmd_busaddr,
-			host->dma.cmdptr_busaddr);
-	} else
-		pr_info("%s: PIO transfer enabled\n", mmc_hostname(mmc));
-	if (host->timer.function)
-		pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc));
-
-	return 0;
- cmd_irq_free:
-	free_irq(cmd_irqres->start, host);
- stat_irq_free:
-	if (host->stat_irq)
-		free_irq(host->stat_irq, host);
- clk_disable:
-	msmsdcc_disable_clocks(host, 0);
- clk_unprepare:
-	clk_unprepare(host->clk);
- clk_unprepare_p:
-	clk_unprepare(host->pclk);
- clk_put:
-	clk_put(host->clk);
- pclk_put:
-	clk_put(host->pclk);
-dma_free:
-	if (host->dmares)
-		dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
-					host->dma.nc, host->dma.nc_busaddr);
-ioremap_free:
-	tasklet_kill(&host->dma_tlet);
-	iounmap(host->base);
- host_free:
-	mmc_free_host(mmc);
- out:
-	return ret;
-}
-
-#ifdef CONFIG_PM
-static int
-msmsdcc_suspend(struct platform_device *dev, pm_message_t state)
-{
-	struct mmc_host *mmc = platform_get_drvdata(dev);
-
-	if (mmc) {
-		struct msmsdcc_host *host = mmc_priv(mmc);
-
-		if (host->stat_irq)
-			disable_irq(host->stat_irq);
-
-		msmsdcc_writel(host, 0, MMCIMASK0);
-		if (host->clks_on)
-			msmsdcc_disable_clocks(host, 0);
-	}
-	return 0;
-}
-
-static int
-msmsdcc_resume(struct platform_device *dev)
-{
-	struct mmc_host *mmc = platform_get_drvdata(dev);
-
-	if (mmc) {
-		struct msmsdcc_host *host = mmc_priv(mmc);
-
-		msmsdcc_enable_clocks(host);
-
-		msmsdcc_writel(host, host->saved_irq0mask, MMCIMASK0);
-
-		if (host->stat_irq)
-			enable_irq(host->stat_irq);
-#if BUSCLK_PWRSAVE
-		msmsdcc_disable_clocks(host, 1);
-#endif
-	}
-	return 0;
-}
-#else
-#define msmsdcc_suspend	0
-#define msmsdcc_resume 0
-#endif
-
-static struct platform_driver msmsdcc_driver = {
-	.probe		= msmsdcc_probe,
-	.suspend	= msmsdcc_suspend,
-	.resume		= msmsdcc_resume,
-	.driver		= {
-		.name	= "msm_sdcc",
-	},
-};
-
-module_platform_driver(msmsdcc_driver);
-
-MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver");
-MODULE_LICENSE("GPL");

drivers/mmc/host/msm_sdcc.h

@@ -1,256 +0,0 @@
-/*
- *  linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller
- *
- *  Copyright (C) 2008 Google, 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.
- *
- * - Based on mmci.h
- */
-
-#ifndef _MSM_SDCC_H
-#define _MSM_SDCC_H
-
-#define MSMSDCC_CRCI_SDC1	6
-#define MSMSDCC_CRCI_SDC2	7
-#define MSMSDCC_CRCI_SDC3	12
-#define MSMSDCC_CRCI_SDC4	13
-
-#define MMCIPOWER		0x000
-#define MCI_PWR_OFF		0x00
-#define MCI_PWR_UP		0x02
-#define MCI_PWR_ON		0x03
-#define MCI_OD			(1 << 6)
-
-#define MMCICLOCK		0x004
-#define MCI_CLK_ENABLE		(1 << 8)
-#define MCI_CLK_PWRSAVE		(1 << 9)
-#define MCI_CLK_WIDEBUS		(1 << 10)
-#define MCI_CLK_FLOWENA		(1 << 12)
-#define MCI_CLK_INVERTOUT	(1 << 13)
-#define MCI_CLK_SELECTIN	(1 << 14)
-
-#define MMCIARGUMENT		0x008
-#define MMCICOMMAND		0x00c
-#define MCI_CPSM_RESPONSE	(1 << 6)
-#define MCI_CPSM_LONGRSP	(1 << 7)
-#define MCI_CPSM_INTERRUPT	(1 << 8)
-#define MCI_CPSM_PENDING	(1 << 9)
-#define MCI_CPSM_ENABLE		(1 << 10)
-#define MCI_CPSM_PROGENA	(1 << 11)
-#define MCI_CSPM_DATCMD		(1 << 12)
-#define MCI_CSPM_MCIABORT	(1 << 13)
-#define MCI_CSPM_CCSENABLE	(1 << 14)
-#define MCI_CSPM_CCSDISABLE	(1 << 15)
-
-
-#define MMCIRESPCMD		0x010
-#define MMCIRESPONSE0		0x014
-#define MMCIRESPONSE1		0x018
-#define MMCIRESPONSE2		0x01c
-#define MMCIRESPONSE3		0x020
-#define MMCIDATATIMER		0x024
-#define MMCIDATALENGTH		0x028
-
-#define MMCIDATACTRL		0x02c
-#define MCI_DPSM_ENABLE		(1 << 0)
-#define MCI_DPSM_DIRECTION	(1 << 1)
-#define MCI_DPSM_MODE		(1 << 2)
-#define MCI_DPSM_DMAENABLE	(1 << 3)
-
-#define MMCIDATACNT		0x030
-#define MMCISTATUS		0x034
-#define MCI_CMDCRCFAIL		(1 << 0)
-#define MCI_DATACRCFAIL		(1 << 1)
-#define MCI_CMDTIMEOUT		(1 << 2)
-#define MCI_DATATIMEOUT		(1 << 3)
-#define MCI_TXUNDERRUN		(1 << 4)
-#define MCI_RXOVERRUN		(1 << 5)
-#define MCI_CMDRESPEND		(1 << 6)
-#define MCI_CMDSENT		(1 << 7)
-#define MCI_DATAEND		(1 << 8)
-#define MCI_DATABLOCKEND	(1 << 10)
-#define MCI_CMDACTIVE		(1 << 11)
-#define MCI_TXACTIVE		(1 << 12)
-#define MCI_RXACTIVE		(1 << 13)
-#define MCI_TXFIFOHALFEMPTY	(1 << 14)
-#define MCI_RXFIFOHALFFULL	(1 << 15)
-#define MCI_TXFIFOFULL		(1 << 16)
-#define MCI_RXFIFOFULL		(1 << 17)
-#define MCI_TXFIFOEMPTY		(1 << 18)
-#define MCI_RXFIFOEMPTY		(1 << 19)
-#define MCI_TXDATAAVLBL		(1 << 20)
-#define MCI_RXDATAAVLBL		(1 << 21)
-#define MCI_SDIOINTR		(1 << 22)
-#define MCI_PROGDONE		(1 << 23)
-#define MCI_ATACMDCOMPL		(1 << 24)
-#define MCI_SDIOINTOPER		(1 << 25)
-#define MCI_CCSTIMEOUT		(1 << 26)
-
-#define MMCICLEAR		0x038
-#define MCI_CMDCRCFAILCLR	(1 << 0)
-#define MCI_DATACRCFAILCLR	(1 << 1)
-#define MCI_CMDTIMEOUTCLR	(1 << 2)
-#define MCI_DATATIMEOUTCLR	(1 << 3)
-#define MCI_TXUNDERRUNCLR	(1 << 4)
-#define MCI_RXOVERRUNCLR	(1 << 5)
-#define MCI_CMDRESPENDCLR	(1 << 6)
-#define MCI_CMDSENTCLR		(1 << 7)
-#define MCI_DATAENDCLR		(1 << 8)
-#define MCI_DATABLOCKENDCLR	(1 << 10)
-
-#define MMCIMASK0		0x03c
-#define MCI_CMDCRCFAILMASK	(1 << 0)
-#define MCI_DATACRCFAILMASK	(1 << 1)
-#define MCI_CMDTIMEOUTMASK	(1 << 2)
-#define MCI_DATATIMEOUTMASK	(1 << 3)
-#define MCI_TXUNDERRUNMASK	(1 << 4)
-#define MCI_RXOVERRUNMASK	(1 << 5)
-#define MCI_CMDRESPENDMASK	(1 << 6)
-#define MCI_CMDSENTMASK		(1 << 7)
-#define MCI_DATAENDMASK		(1 << 8)
-#define MCI_DATABLOCKENDMASK	(1 << 10)
-#define MCI_CMDACTIVEMASK	(1 << 11)
-#define MCI_TXACTIVEMASK	(1 << 12)
-#define MCI_RXACTIVEMASK	(1 << 13)
-#define MCI_TXFIFOHALFEMPTYMASK	(1 << 14)
-#define MCI_RXFIFOHALFFULLMASK	(1 << 15)
-#define MCI_TXFIFOFULLMASK	(1 << 16)
-#define MCI_RXFIFOFULLMASK	(1 << 17)
-#define MCI_TXFIFOEMPTYMASK	(1 << 18)
-#define MCI_RXFIFOEMPTYMASK	(1 << 19)
-#define MCI_TXDATAAVLBLMASK	(1 << 20)
-#define MCI_RXDATAAVLBLMASK	(1 << 21)
-#define MCI_SDIOINTMASK		(1 << 22)
-#define MCI_PROGDONEMASK	(1 << 23)
-#define MCI_ATACMDCOMPLMASK	(1 << 24)
-#define MCI_SDIOINTOPERMASK	(1 << 25)
-#define MCI_CCSTIMEOUTMASK	(1 << 26)
-
-#define MMCIMASK1		0x040
-#define MMCIFIFOCNT		0x044
-#define MCICCSTIMER		0x058
-
-#define MMCIFIFO		0x080 /* to 0x0bc */
-
-#define MCI_IRQENABLE	\
-	(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|	\
-	MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|	\
-	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK)
-
-#define MCI_IRQ_PIO \
-	(MCI_RXDATAAVLBLMASK | MCI_TXDATAAVLBLMASK | MCI_RXFIFOEMPTYMASK | \
-	 MCI_TXFIFOEMPTYMASK | MCI_RXFIFOFULLMASK | MCI_TXFIFOFULLMASK | \
-	 MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK | \
-	 MCI_RXACTIVEMASK | MCI_TXACTIVEMASK)
-/*
- * The size of the FIFO in bytes.
- */
-#define MCI_FIFOSIZE	(16*4)
-
-#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
-
-#define NR_SG		32
-
-struct clk;
-
-struct msmsdcc_nc_dmadata {
-	dmov_box	cmd[NR_SG];
-	uint32_t	cmdptr;
-};
-
-struct msmsdcc_dma_data {
-	struct msmsdcc_nc_dmadata	*nc;
-	dma_addr_t			nc_busaddr;
-	dma_addr_t			cmd_busaddr;
-	dma_addr_t			cmdptr_busaddr;
-
-	struct msm_dmov_cmd		hdr;
-	enum dma_data_direction		dir;
-
-	struct scatterlist		*sg;
-	int				num_ents;
-
-	int				channel;
-	struct msmsdcc_host		*host;
-	int				busy; /* Set if DM is busy */
-	int				active;
-	unsigned int			result;
-	struct msm_dmov_errdata		err;
-};
-
-struct msmsdcc_pio_data {
-	struct scatterlist	*sg;
-	unsigned int		sg_len;
-	unsigned int		sg_off;
-};
-
-struct msmsdcc_curr_req {
-	struct mmc_request	*mrq;
-	struct mmc_command	*cmd;
-	struct mmc_data		*data;
-	unsigned int		xfer_size;	/* Total data size */
-	unsigned int		xfer_remain;	/* Bytes remaining to send */
-	unsigned int		data_xfered;	/* Bytes acked by BLKEND irq */
-	int			got_dataend;
-	int			user_pages;
-};
-
-struct msmsdcc_stats {
-	unsigned int reqs;
-	unsigned int cmds;
-	unsigned int cmdpoll_hits;
-	unsigned int cmdpoll_misses;
-};
-
-struct msmsdcc_host {
-	struct resource		*cmd_irqres;
-	struct resource		*memres;
-	struct resource		*dmares;
-	void __iomem		*base;
-	int			pdev_id;
-	unsigned int		stat_irq;
-
-	struct msmsdcc_curr_req	curr;
-
-	struct mmc_host		*mmc;
-	struct clk		*clk;		/* main MMC bus clock */
-	struct clk		*pclk;		/* SDCC peripheral bus clock */
-	unsigned int		clks_on;	/* set if clocks are enabled */
-	struct timer_list	busclk_timer;
-
-	unsigned int		eject;		/* eject state */
-
-	spinlock_t		lock;
-
-	unsigned int		clk_rate;	/* Current clock rate */
-	unsigned int		pclk_rate;
-
-	u32			pwr;
-	u32			saved_irq0mask;	/* MMCIMASK0 reg value */
-	struct msm_mmc_platform_data *plat;
-
-	struct timer_list	timer;
-	unsigned int		oldstat;
-
-	struct msmsdcc_dma_data	dma;
-	struct msmsdcc_pio_data	pio;
-	int			cmdpoll;
-	struct msmsdcc_stats	stats;
-
-	struct tasklet_struct	dma_tlet;
-	/* Command parameters */
-	unsigned int		cmd_timeout;
-	unsigned int		cmd_pio_irqmask;
-	unsigned int		cmd_datactrl;
-	struct mmc_command	*cmd_cmd;
-	u32			cmd_c;
-	bool			gpio_config_status;
-
-	bool prog_scan;
-	bool prog_enable;
-};
-
-#endif

include/linux/platform_data/mmc-msm_sdcc.h

@@ -1,27 +0,0 @@
-#ifndef __MMC_MSM_SDCC_H
-#define __MMC_MSM_SDCC_H
-
-#include <linux/mmc/host.h>
-#include <linux/mmc/card.h>
-#include <linux/mmc/sdio_func.h>
-
-struct msm_mmc_gpio {
-	unsigned no;
-	const char *name;
-};
-
-struct msm_mmc_gpio_data {
-	struct msm_mmc_gpio *gpio;
-	u8 size;
-};
-
-struct msm_mmc_platform_data {
-	unsigned int ocr_mask;			/* available voltages */
-	u32 (*translate_vdd)(struct device *, unsigned int);
-	unsigned int (*status)(struct device *);
-	int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
-	struct msm_mmc_gpio_data *gpio_data;
-	void (*init_card)(struct mmc_card *card);
-};
-
-#endif