Merge commit 'c104f1fa1ecf4ee0fc06e31b1f77630b2551be81' into stable/for-linus-3.4

* commit 'c104f1fa1ecf4ee0fc06e31b1f77630b2551be81': (14566 commits) cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS sparc64: Eliminate obsolete __handle_softirq() function sparc64: Fix bootup crash on sun4v. kconfig: delete last traces of __enabled_ from autoconf.h Revert "kconfig: fix __enabled_ macros definition for invisible and un-selected symbols" kconfig: fix IS_ENABLED to not require all options to be defined irq_domain: fix type mismatch in debugfs output format staging: android: fix mem leaks in __persistent_ram_init() staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl() staging: iio: hmc5843: Fix crash in probe function. panic: fix stack dump print on direct call to panic() drivers/rtc/rtc-pl031.c: enable clock on all ST variants Revert "mm: vmscan: fix misused nr_reclaimed in shrink_mem_cgroup_zone()" hugetlb: fix race condition in hugetlb_fault() drivers/rtc/rtc-twl.c: use static register while reading time drivers/rtc/rtc-s3c.c: add placeholder for driver private data drivers/rtc/rtc-s3c.c: fix compilation error MAINTAINERS: add PCDP console maintainer memcg: do not open code accesses to res_counter members drivers/rtc/rtc-efi.c: fix section mismatch warning ...
author: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2012-04-18 15:52:50 -0400
committer: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2012-04-18 15:52:50 -0400
commit: 681e4a5e13c1c8315694eb4f44e0cdd84c9082d2 (patch)
tree: 699f14527c118859026e8ce0214e689d0b9c88cb /drivers/mmc/host
parent: b960d6c43a63ebd2d8518b328da3816b833ee8cc (diff)
parent: c104f1fa1ecf4ee0fc06e31b1f77630b2551be81 (diff)
48 files changed, 2394 insertions, 1486 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index cf444b0ca2c..2bc06e7344d 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -395,7 +395,7 @@ config MMC_SPI
 
 config MMC_S3C
 	tristate "Samsung S3C SD/MMC Card Interface support"
-	depends on ARCH_S3C2410
+	depends on ARCH_S3C24XX
 	help
 	  This selects a driver for the MCI interface found in
           Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
@@ -477,7 +477,6 @@ config MMC_SDHI
 config MMC_CB710
 	tristate "ENE CB710 MMC/SD Interface support"
 	depends on PCI
-	select MISC_DEVICES
 	select CB710_CORE
 	help
 	  This option enables support for MMC/SD part of ENE CB710/720 Flash
@@ -534,6 +533,31 @@ config MMC_DW_IDMAC
 	  Designware Mobile Storage IP block. This disables the external DMA
 	  interface.
 
+config MMC_DW_PLTFM
+	tristate "Synopsys Designware MCI Support as platform device"
+	depends on MMC_DW
+	default y
+	help
+	  This selects the common helper functions support for Host Controller
+	  Interface based platform driver. Please select this option if the IP
+	  is present as a platform device. This is the common interface for the
+	  Synopsys Designware IP.
+
+	  If you have a controller with this interface, say Y or M here.
+
+	  If unsure, say Y.
+
+config MMC_DW_PCI
+	tristate "Synopsys Designware MCI support on PCI bus"
+	depends on MMC_DW && PCI
+	help
+	  This selects the PCI bus for the Synopsys Designware Mobile Storage IP.
+	  Select this option if the IP is present on PCI platform.
+
+	  If you have a controller with this interface, say Y or M here.
+
+	  If unsure, say N.
+
 config MMC_SH_MMCIF
 	tristate "SuperH Internal MMCIF support"
 	depends on MMC_BLOCK && (SUPERH || ARCH_SHMOBILE)
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index b4b83f302e3..3e7e26d0807 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_MMC_MXC)		+= mxcmmc.o
 obj-$(CONFIG_MMC_MXS)		+= mxs-mmc.o
 obj-$(CONFIG_MMC_SDHCI)		+= sdhci.o
 obj-$(CONFIG_MMC_SDHCI_PCI)	+= sdhci-pci.o
+obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI))	+= sdhci-pci-data.o
 obj-$(CONFIG_MMC_SDHCI_PXAV3)	+= sdhci-pxav3.o
 obj-$(CONFIG_MMC_SDHCI_PXAV2)	+= sdhci-pxav2.o
 obj-$(CONFIG_MMC_SDHCI_S3C)	+= sdhci-s3c.o
@@ -38,6 +39,8 @@ obj-$(CONFIG_MMC_CB710)		+= cb710-mmc.o
 obj-$(CONFIG_MMC_VIA_SDMMC)	+= via-sdmmc.o
 obj-$(CONFIG_SDH_BFIN)		+= bfin_sdh.o
 obj-$(CONFIG_MMC_DW)		+= dw_mmc.o
+obj-$(CONFIG_MMC_DW_PLTFM)	+= dw_mmc-pltfm.o
+obj-$(CONFIG_MMC_DW_PCI)	+= dw_mmc-pci.o
 obj-$(CONFIG_MMC_SH_MMCIF)	+= sh_mmcif.o
 obj-$(CONFIG_MMC_JZ4740)	+= jz4740_mmc.o
 obj-$(CONFIG_MMC_VUB300)	+= vub300.o
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index f437c3e6f3a..efdb81d21c4 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -86,7 +86,6 @@ static inline int at91mci_is_mci1rev2xx(void)
 {
 	return (   cpu_is_at91sam9260()
 		|| cpu_is_at91sam9263()
-		|| cpu_is_at91cap9()
 		|| cpu_is_at91sam9rl()
 		|| cpu_is_at91sam9g10()
 		|| cpu_is_at91sam9g20()
@@ -236,7 +235,7 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
 
 		sg = &data->sg[i];
 
-		sgbuffer = kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+		sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset;
 		amount = min(size, sg->length);
 		size -= amount;
 
@@ -252,7 +251,7 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
 			dmabuf = (unsigned *)tmpv;
 		}
 
-		kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ);
+		kunmap_atomic(sgbuffer);
 
 		if (size == 0)
 			break;
@@ -302,7 +301,7 @@ static void at91_mci_post_dma_read(struct at91mci_host *host)
 
 		sg = &data->sg[i];
 
-		sgbuffer = kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+		sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset;
 		amount = min(size, sg->length);
 		size -= amount;
 
@@ -318,7 +317,7 @@ static void at91_mci_post_dma_read(struct at91mci_host *host)
 		}
 
 		flush_kernel_dcache_page(sg_page(sg));
-		kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ);
+		kunmap_atomic(sgbuffer);
 		data->bytes_xfered += amount;
 		if (size == 0)
 			break;
diff --git a/drivers/mmc/host/atmel-mci-regs.h b/drivers/mmc/host/atmel-mci-regs.h
index 000b3ad0f5c..787aba1682b 100644
--- a/drivers/mmc/host/atmel-mci-regs.h
+++ b/drivers/mmc/host/atmel-mci-regs.h
@@ -31,6 +31,7 @@
 # define ATMCI_MR_PDCFBYTE		(  1 << 13)	/* Force Byte Transfer */
 # define ATMCI_MR_PDCPADV		(  1 << 14)	/* Padding Value */
 # define ATMCI_MR_PDCMODE		(  1 << 15)	/* PDC-oriented Mode */
+# define ATMCI_MR_CLKODD(x)		((x) << 16)	/* LSB of Clock Divider */
 #define ATMCI_DTOR			0x0008	/* Data Timeout */
 # define ATMCI_DTOCYC(x)		((x) <<  0)	/* Data Timeout Cycles */
 # define ATMCI_DTOMUL(x)		((x) <<  4)	/* Data Timeout Multiplier */
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index a7ee5027146..e94476beca1 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -24,6 +24,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
+#include <linux/types.h>
 
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdio.h>
@@ -76,6 +77,7 @@ struct atmel_mci_caps {
 	bool    has_cstor_reg;
 	bool    has_highspeed;
 	bool    has_rwproof;
+	bool	has_odd_clk_div;
 };
 
 struct atmel_mci_dma {
@@ -173,6 +175,7 @@ struct atmel_mci {
 
 	struct atmel_mci_dma	dma;
 	struct dma_chan		*data_chan;
+	struct dma_slave_config	dma_conf;
 
 	u32			cmd_status;
 	u32			data_status;
@@ -480,7 +483,14 @@ err:
 static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host,
 					unsigned int ns)
 {
-	return (ns * (host->bus_hz / 1000000) + 999) / 1000;
+	/*
+	 * It is easier here to use us instead of ns for the timeout,
+	 * it prevents from overflows during calculation.
+	 */
+	unsigned int us = DIV_ROUND_UP(ns, 1000);
+
+	/* Maximum clock frequency is host->bus_hz/2 */
+	return us * (DIV_ROUND_UP(host->bus_hz, 2000000));
 }
 
 static void atmci_set_timeout(struct atmel_mci *host,
@@ -823,6 +833,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	struct scatterlist		*sg;
 	unsigned int			i;
 	enum dma_data_direction		direction;
+	enum dma_transfer_direction	slave_dirn;
 	unsigned int			sglen;
 	u32 iflags;
 
@@ -860,16 +871,20 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	if (host->caps.has_dma)
 		atmci_writel(host, ATMCI_DMA, ATMCI_DMA_CHKSIZE(3) | ATMCI_DMAEN);
 
-	if (data->flags & MMC_DATA_READ)
+	if (data->flags & MMC_DATA_READ) {
 		direction = DMA_FROM_DEVICE;
-	else
+		host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM;
+	} else {
 		direction = DMA_TO_DEVICE;
+		host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV;
+	}
 
 	sglen = dma_map_sg(chan->device->dev, data->sg,
 			data->sg_len, direction);
 
-	desc = chan->device->device_prep_slave_sg(chan,
-			data->sg, sglen, direction,
+	dmaengine_slave_config(chan, &host->dma_conf);
+	desc = dmaengine_prep_slave_sg(chan,
+			data->sg, sglen, slave_dirn,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc)
 		goto unmap_exit;
@@ -965,11 +980,14 @@ static void atmci_start_request(struct atmel_mci *host,
 	host->data_status = 0;
 
 	if (host->need_reset) {
+		iflags = atmci_readl(host, ATMCI_IMR);
+		iflags &= (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB);
 		atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
 		atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN);
 		atmci_writel(host, ATMCI_MR, host->mode_reg);
 		if (host->caps.has_cfg_reg)
 			atmci_writel(host, ATMCI_CFG, host->cfg_reg);
+		atmci_writel(host, ATMCI_IER, iflags);
 		host->need_reset = false;
 	}
 	atmci_writel(host, ATMCI_SDCR, slot->sdc_reg);
@@ -1117,16 +1135,27 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		}
 
 		/* Calculate clock divider */
-		clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1;
-		if (clkdiv > 255) {
-			dev_warn(&mmc->class_dev,
-				"clock %u too slow; using %lu\n",
-				clock_min, host->bus_hz / (2 * 256));
-			clkdiv = 255;
+		if (host->caps.has_odd_clk_div) {
+			clkdiv = DIV_ROUND_UP(host->bus_hz, clock_min) - 2;
+			if (clkdiv > 511) {
+				dev_warn(&mmc->class_dev,
+				         "clock %u too slow; using %lu\n",
+				         clock_min, host->bus_hz / (511 + 2));
+				clkdiv = 511;
+			}
+			host->mode_reg = ATMCI_MR_CLKDIV(clkdiv >> 1)
+			                 | ATMCI_MR_CLKODD(clkdiv & 1);
+		} else {
+			clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1;
+			if (clkdiv > 255) {
+				dev_warn(&mmc->class_dev,
+				         "clock %u too slow; using %lu\n",
+				         clock_min, host->bus_hz / (2 * 256));
+				clkdiv = 255;
+			}
+			host->mode_reg = ATMCI_MR_CLKDIV(clkdiv);
 		}
 
-		host->mode_reg = ATMCI_MR_CLKDIV(clkdiv);
-
 		/*
 		 * WRPROOF and RDPROOF prevent overruns/underruns by
 		 * stopping the clock when the FIFO is full/empty.
@@ -1941,34 +1970,41 @@ static bool atmci_filter(struct dma_chan *chan, void *slave)
 	}
 }
 
-static void atmci_configure_dma(struct atmel_mci *host)
+static bool atmci_configure_dma(struct atmel_mci *host)
 {
 	struct mci_platform_data	*pdata;
 
 	if (host == NULL)
-		return;
+		return false;
 
 	pdata = host->pdev->dev.platform_data;
 
 	if (pdata && find_slave_dev(pdata->dma_slave)) {
 		dma_cap_mask_t mask;
 
-		setup_dma_addr(pdata->dma_slave,
-			       host->mapbase + ATMCI_TDR,
-			       host->mapbase + ATMCI_RDR);
-
 		/* Try to grab a DMA channel */
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
 		host->dma.chan =
 			dma_request_channel(mask, atmci_filter, pdata->dma_slave);
 	}
-	if (!host->dma.chan)
-		dev_notice(&host->pdev->dev, "DMA not available, using PIO\n");
-	else
+	if (!host->dma.chan) {
+		dev_warn(&host->pdev->dev, "no DMA channel available\n");
+		return false;
+	} else {
 		dev_info(&host->pdev->dev,
-					"Using %s for DMA transfers\n",
+					"using %s for DMA transfers\n",
 					dma_chan_name(host->dma.chan));
+
+		host->dma_conf.src_addr = host->mapbase + ATMCI_RDR;
+		host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+		host->dma_conf.src_maxburst = 1;
+		host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR;
+		host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+		host->dma_conf.dst_maxburst = 1;
+		host->dma_conf.device_fc = false;
+		return true;
+	}
 }
 
 static inline unsigned int atmci_get_version(struct atmel_mci *host)
@@ -1990,35 +2026,35 @@ static void __init atmci_get_cap(struct atmel_mci *host)
 			"version: 0x%x\n", version);
 
 	host->caps.has_dma = 0;
-	host->caps.has_pdc = 0;
+	host->caps.has_pdc = 1;
 	host->caps.has_cfg_reg = 0;
 	host->caps.has_cstor_reg = 0;
 	host->caps.has_highspeed = 0;
 	host->caps.has_rwproof = 0;
+	host->caps.has_odd_clk_div = 0;
 
 	/* keep only major version number */
 	switch (version & 0xf00) {
-	case 0x100:
-	case 0x200:
-		host->caps.has_pdc = 1;
-		host->caps.has_rwproof = 1;
-		break;
-	case 0x300:
-	case 0x400:
 	case 0x500:
+		host->caps.has_odd_clk_div = 1;
+	case 0x400:
+	case 0x300:
 #ifdef CONFIG_AT_HDMAC
 		host->caps.has_dma = 1;
 #else
-		host->caps.has_dma = 0;
 		dev_info(&host->pdev->dev,
 			"has dma capability but dma engine is not selected, then use pio\n");
 #endif
+		host->caps.has_pdc = 0;
 		host->caps.has_cfg_reg = 1;
 		host->caps.has_cstor_reg = 1;
 		host->caps.has_highspeed = 1;
+	case 0x200:
 		host->caps.has_rwproof = 1;
+	case 0x100:
 		break;
 	default:
+		host->caps.has_pdc = 0;
 		dev_warn(&host->pdev->dev,
 				"Unmanaged mci version, set minimum capabilities\n");
 		break;
@@ -2078,8 +2114,7 @@ static int __init atmci_probe(struct platform_device *pdev)
 
 	/* Get MCI capabilities and set operations according to it */
 	atmci_get_cap(host);
-	if (host->caps.has_dma) {
-		dev_info(&pdev->dev, "using DMA\n");
+	if (host->caps.has_dma && atmci_configure_dma(host)) {
 		host->prepare_data = &atmci_prepare_data_dma;
 		host->submit_data = &atmci_submit_data_dma;
 		host->stop_transfer = &atmci_stop_transfer_dma;
@@ -2089,15 +2124,12 @@ static int __init atmci_probe(struct platform_device *pdev)
 		host->submit_data = &atmci_submit_data_pdc;
 		host->stop_transfer = &atmci_stop_transfer_pdc;
 	} else {
-		dev_info(&pdev->dev, "no DMA, no PDC\n");
+		dev_info(&pdev->dev, "using PIO\n");
 		host->prepare_data = &atmci_prepare_data;
 		host->submit_data = &atmci_submit_data;
 		host->stop_transfer = &atmci_stop_transfer;
 	}
 
-	if (host->caps.has_dma)
-		atmci_configure_dma(host);
-
 	platform_set_drvdata(pdev, host);
 
 	/* We need at least one slot to succeed */
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index 5d3b9ae6452..dbd0c8a4e98 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -153,6 +153,7 @@ static inline int has_dbdma(void)
 {
 	switch (alchemy_get_cputype()) {
 	case ALCHEMY_CPU_AU1200:
+	case ALCHEMY_CPU_AU1300:
 		return 1;
 	default:
 		return 0;
@@ -768,11 +769,15 @@ static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
 	config2 = au_readl(HOST_CONFIG2(host));
 	switch (ios->bus_width) {
+	case MMC_BUS_WIDTH_8:
+		config2 |= SD_CONFIG2_BB;
+		break;
 	case MMC_BUS_WIDTH_4:
+		config2 &= ~SD_CONFIG2_BB;
 		config2 |= SD_CONFIG2_WB;
 		break;
 	case MMC_BUS_WIDTH_1:
-		config2 &= ~SD_CONFIG2_WB;
+		config2 &= ~(SD_CONFIG2_WB | SD_CONFIG2_BB);
 		break;
 	}
 	au_writel(config2, HOST_CONFIG2(host));
@@ -943,7 +948,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 	struct mmc_host *mmc;
 	struct au1xmmc_host *host;
 	struct resource *r;
-	int ret;
+	int ret, iflag;
 
 	mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
 	if (!mmc) {
@@ -982,37 +987,43 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "no IRQ defined\n");
 		goto out3;
 	}
-
 	host->irq = r->start;
-	/* IRQ is shared among both SD controllers */
-	ret = request_irq(host->irq, au1xmmc_irq, IRQF_SHARED,
-			  DRIVER_NAME, host);
-	if (ret) {
-		dev_err(&pdev->dev, "cannot grab IRQ\n");
-		goto out3;
-	}
 
 	mmc->ops = &au1xmmc_ops;
 
 	mmc->f_min =   450000;
 	mmc->f_max = 24000000;
 
+	mmc->max_blk_size = 2048;
+	mmc->max_blk_count = 512;
+
+	mmc->ocr_avail = AU1XMMC_OCR;
+	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
+	mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT;
+
+	iflag = IRQF_SHARED;	/* Au1100/Au1200: one int for both ctrls */
+
 	switch (alchemy_get_cputype()) {
 	case ALCHEMY_CPU_AU1100:
 		mmc->max_seg_size = AU1100_MMC_DESCRIPTOR_SIZE;
-		mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT;
 		break;
 	case ALCHEMY_CPU_AU1200:
 		mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE;
-		mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT;
+		break;
+	case ALCHEMY_CPU_AU1300:
+		iflag = 0;	/* nothing is shared */
+		mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE;
+		mmc->f_max = 52000000;
+		if (host->ioarea->start == AU1100_SD0_PHYS_ADDR)
+			mmc->caps |= MMC_CAP_8_BIT_DATA;
 		break;
 	}
 
-	mmc->max_blk_size = 2048;
-	mmc->max_blk_count = 512;
-
-	mmc->ocr_avail = AU1XMMC_OCR;
-	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
+	ret = request_irq(host->irq, au1xmmc_irq, iflag, DRIVER_NAME, host);
+	if (ret) {
+		dev_err(&pdev->dev, "cannot grab IRQ\n");
+		goto out3;
+	}
 
 	host->status = HOST_S_IDLE;
 
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 0371bf50224..03666174ca4 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -627,17 +627,7 @@ static struct platform_driver sdh_driver = {
 	},
 };
 
-static int __init sdh_init(void)
-{
-	return platform_driver_register(&sdh_driver);
-}
-module_init(sdh_init);
-
-static void __exit sdh_exit(void)
-{
-	platform_driver_unregister(&sdh_driver);
-}
-module_exit(sdh_exit);
+module_platform_driver(sdh_driver);
 
 MODULE_DESCRIPTION("Blackfin Secure Digital Host Driver");
 MODULE_AUTHOR("Cliff Cai, Roy Huang");
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index ce2a47b71dd..83693fd7c6b 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -780,18 +780,7 @@ static struct platform_driver cb710_mmc_driver = {
 #endif
 };
 
-static int __init cb710_mmc_init_module(void)
-{
-	return platform_driver_register(&cb710_mmc_driver);
-}
-
-static void __exit cb710_mmc_cleanup_module(void)
-{
-	platform_driver_unregister(&cb710_mmc_driver);
-}
-
-module_init(cb710_mmc_init_module);
-module_exit(cb710_mmc_cleanup_module);
+module_platform_driver(cb710_mmc_driver);
 
 MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
 MODULE_DESCRIPTION("ENE CB710 memory card reader driver - MMC/SD part");
diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 64a8325a4a8..c1f3673ae1e 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -160,6 +160,16 @@ module_param(rw_threshold, uint, S_IRUGO);
 MODULE_PARM_DESC(rw_threshold,
 		"Read/Write threshold. Default = 32");
 
+static unsigned poll_threshold = 128;
+module_param(poll_threshold, uint, S_IRUGO);
+MODULE_PARM_DESC(poll_threshold,
+		 "Polling transaction size threshold. Default = 128");
+
+static unsigned poll_loopcount = 32;
+module_param(poll_loopcount, uint, S_IRUGO);
+MODULE_PARM_DESC(poll_loopcount,
+		 "Maximum polling loop count. Default = 32");
+
 static unsigned __initdata use_dma = 1;
 module_param(use_dma, uint, 0);
 MODULE_PARM_DESC(use_dma, "Whether to use DMA or not. Default = 1");
@@ -193,6 +203,7 @@ struct mmc_davinci_host {
 	bool use_dma;
 	bool do_dma;
 	bool sdio_int;
+	bool active_request;
 
 	/* Scatterlist DMA uses one or more parameter RAM entries:
 	 * the main one (associated with rxdma or txdma) plus zero or
@@ -219,6 +230,7 @@ struct mmc_davinci_host {
 #endif
 };
 
+static irqreturn_t mmc_davinci_irq(int irq, void *dev_id);
 
 /* PIO only */
 static void mmc_davinci_sg_to_buf(struct mmc_davinci_host *host)
@@ -376,7 +388,20 @@ static void mmc_davinci_start_command(struct mmc_davinci_host *host,
 
 	writel(cmd->arg, host->base + DAVINCI_MMCARGHL);
 	writel(cmd_reg,  host->base + DAVINCI_MMCCMD);
-	writel(im_val, host->base + DAVINCI_MMCIM);
+
+	host->active_request = true;
+
+	if (!host->do_dma && host->bytes_left <= poll_threshold) {
+		u32 count = poll_loopcount;
+
+		while (host->active_request && count--) {
+			mmc_davinci_irq(0, host);
+			cpu_relax();
+		}
+	}
+
+	if (host->active_request)
+		writel(im_val, host->base + DAVINCI_MMCIM);
 }
 
 /*----------------------------------------------------------------------*/
@@ -915,6 +940,7 @@ mmc_davinci_xfer_done(struct mmc_davinci_host *host, struct mmc_data *data)
 	if (!data->stop || (host->cmd && host->cmd->error)) {
 		mmc_request_done(host->mmc, data->mrq);
 		writel(0, host->base + DAVINCI_MMCIM);
+		host->active_request = false;
 	} else
 		mmc_davinci_start_command(host, data->stop);
 }
@@ -942,6 +968,7 @@ static void mmc_davinci_cmd_done(struct mmc_davinci_host *host,
 			cmd->mrq->cmd->retries = 0;
 		mmc_request_done(host->mmc, cmd->mrq);
 		writel(0, host->base + DAVINCI_MMCIM);
+		host->active_request = false;
 	}
 }
 
@@ -1009,12 +1036,33 @@ static irqreturn_t mmc_davinci_irq(int irq, void *dev_id)
 	 * by read. So, it is not unbouned loop even in the case of
 	 * non-dma.
 	 */
-	while (host->bytes_left && (status & (MMCST0_DXRDY | MMCST0_DRRDY))) {
-		davinci_fifo_data_trans(host, rw_threshold);
-		status = readl(host->base + DAVINCI_MMCST0);
-		if (!status)
-			break;
-		qstatus |= status;
+	if (host->bytes_left && (status & (MMCST0_DXRDY | MMCST0_DRRDY))) {
+		unsigned long im_val;
+
+		/*
+		 * If interrupts fire during the following loop, they will be
+		 * handled by the handler, but the PIC will still buffer these.
+		 * As a result, the handler will be called again to serve these
+		 * needlessly. In order to avoid these spurious interrupts,
+		 * keep interrupts masked during the loop.
+		 */
+		im_val = readl(host->base + DAVINCI_MMCIM);
+		writel(0, host->base + DAVINCI_MMCIM);
+
+		do {
+			davinci_fifo_data_trans(host, rw_threshold);
+			status = readl(host->base + DAVINCI_MMCST0);
+			qstatus |= status;
+		} while (host->bytes_left &&
+			 (status & (MMCST0_DXRDY | MMCST0_DRRDY)));
+
+		/*
+		 * If an interrupt is pending, it is assumed it will fire when
+		 * it is unmasked. This assumption is also taken when the MMCIM
+		 * is first set. Otherwise, writing to MMCIM after reading the
+		 * status is race-prone.
+		 */
+		writel(im_val, host->base + DAVINCI_MMCIM);
 	}
 
 	if (qstatus & MMCST0_DATDNE) {
@@ -1418,17 +1466,14 @@ static int davinci_mmcsd_suspend(struct device *dev)
 	struct mmc_davinci_host *host = platform_get_drvdata(pdev);
 	int ret;
 
-	mmc_host_enable(host->mmc);
 	ret = mmc_suspend_host(host->mmc);
 	if (!ret) {
 		writel(0, host->base + DAVINCI_MMCIM);
 		mmc_davinci_reset_ctrl(host, 1);
-		mmc_host_disable(host->mmc);
 		clk_disable(host->clk);
 		host->suspended = 1;
 	} else {
 		host->suspended = 0;
-		mmc_host_disable(host->mmc);
 	}
 
 	return ret;
@@ -1444,7 +1489,6 @@ static int davinci_mmcsd_resume(struct device *dev)
 		return 0;
 
 	clk_enable(host->clk);
-	mmc_host_enable(host->mmc);
 
 	mmc_davinci_reset_ctrl(host, 0);
 	ret = mmc_resume_host(host->mmc);
diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c
new file mode 100644
index 00000000000..dc0d25a013e
--- /dev/null
+++ b/drivers/mmc/host/dw_mmc-pci.c
@@ -0,0 +1,158 @@
+/*
+ * Synopsys DesignWare Multimedia Card PCI Interface driver
+ *
+ * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/dw_mmc.h>
+#include "dw_mmc.h"
+
+#define PCI_BAR_NO 2
+#define COMPLETE_BAR 0
+#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
+#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
+/* Defining the Capabilities */
+#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
+				MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
+				MMC_CAP_SDIO_IRQ)
+
+static struct dw_mci_board pci_board_data = {
+	.num_slots			= 1,
+	.caps				= DW_MCI_CAPABILITIES,
+	.bus_hz				= 33 * 1000 * 1000,
+	.detect_delay_ms		= 200,
+	.fifo_depth			= 32,
+};
+
+static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
+				  const struct pci_device_id *entries)
+{
+	struct dw_mci *host;
+	int ret;
+
+	ret = pci_enable_device(pdev);
+	if (ret)
+		return ret;
+	if (pci_request_regions(pdev, "dw_mmc_pci")) {
+		ret = -ENODEV;
+		goto err_disable_dev;
+	}
+
+	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
+	if (!host) {
+		ret = -ENOMEM;
+		goto err_release;
+	}
+
+	host->irq = pdev->irq;
+	host->irq_flags = IRQF_SHARED;
+	host->dev = pdev->dev;
+	host->pdata = &pci_board_data;
+
+	host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
+	if (!host->regs) {
+		ret = -EIO;
+		goto err_unmap;
+	}
+
+	pci_set_drvdata(pdev, host);
+	ret = dw_mci_probe(host);
+	if (ret)
+		goto err_probe_failed;
+	return ret;
+
+err_probe_failed:
+	pci_iounmap(pdev, host->regs);
+err_unmap:
+	kfree(host);
+err_release:
+	pci_release_regions(pdev);
+err_disable_dev:
+	pci_disable_device(pdev);
+	return ret;
+}
+
+static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
+{
+	struct dw_mci *host = pci_get_drvdata(pdev);
+
+	dw_mci_remove(host);
+	pci_set_drvdata(pdev, NULL);
+	pci_release_regions(pdev);
+	pci_iounmap(pdev, host->regs);
+	kfree(host);
+	pci_disable_device(pdev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int dw_mci_pci_suspend(struct device *dev)
+{
+	int ret;
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct dw_mci *host = pci_get_drvdata(pdev);
+
+	ret = dw_mci_suspend(host);
+	return ret;
+}
+
+static int dw_mci_pci_resume(struct device *dev)
+{
+	int ret;
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct dw_mci *host = pci_get_drvdata(pdev);
+
+	ret = dw_mci_resume(host);
+	return ret;
+}
+#else
+#define dw_mci_pci_suspend	NULL
+#define dw_mci_pci_resume	NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
+
+static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
+	{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
+	{}
+};
+MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
+
+static struct pci_driver dw_mci_pci_driver = {
+	.name		= "dw_mmc_pci",
+	.id_table	= dw_mci_pci_id,
+	.probe		= dw_mci_pci_probe,
+	.remove		= dw_mci_pci_remove,
+	.driver		=	{
+		.pm =   &dw_mci_pci_pmops
+	},
+};
+
+static int __init dw_mci_init(void)
+{
+	return pci_register_driver(&dw_mci_pci_driver);
+}
+
+static void __exit dw_mci_exit(void)
+{
+	pci_unregister_driver(&dw_mci_pci_driver);
+}
+
+module_init(dw_mci_init);
+module_exit(dw_mci_exit);
+
+MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
+MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
new file mode 100644
index 00000000000..92ec3eb3aae
--- /dev/null
+++ b/drivers/mmc/host/dw_mmc-pltfm.c
@@ -0,0 +1,134 @@
+/*
+ * Synopsys DesignWare Multimedia Card Interface driver
+ *
+ * Copyright (C) 2009 NXP Semiconductors
+ * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/dw_mmc.h>
+#include "dw_mmc.h"
+
+static int dw_mci_pltfm_probe(struct platform_device *pdev)
+{
+	struct dw_mci *host;
+	struct resource	*regs;
+	int ret;
+
+	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
+	if (!host)
+		return -ENOMEM;
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!regs) {
+		ret = -ENXIO;
+		goto err_free;
+	}
+
+	host->irq = platform_get_irq(pdev, 0);
+	if (host->irq < 0) {
+		ret = host->irq;
+		goto err_free;
+	}
+
+	host->dev = pdev->dev;
+	host->irq_flags = 0;
+	host->pdata = pdev->dev.platform_data;
+	ret = -ENOMEM;
+	host->regs = ioremap(regs->start, resource_size(regs));
+	if (!host->regs)
+		goto err_free;
+	platform_set_drvdata(pdev, host);
+	ret = dw_mci_probe(host);
+	if (ret)
+		goto err_out;
+	return ret;
+err_out:
+	iounmap(host->regs);
+err_free:
+	kfree(host);
+	return ret;
+}
+
+static int __exit dw_mci_pltfm_remove(struct platform_device *pdev)
+{
+	struct dw_mci *host = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	dw_mci_remove(host);
+	iounmap(host->regs);
+	kfree(host);
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+/*
+ * TODO: we should probably disable the clock to the card in the suspend path.
+ */
+static int dw_mci_pltfm_suspend(struct device *dev)
+{
+	int ret;
+	struct dw_mci *host = dev_get_drvdata(dev);
+
+	ret = dw_mci_suspend(host);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int dw_mci_pltfm_resume(struct device *dev)
+{
+	int ret;
+	struct dw_mci *host = dev_get_drvdata(dev);
+
+	ret = dw_mci_resume(host);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+#else
+#define dw_mci_pltfm_suspend	NULL
+#define dw_mci_pltfm_resume	NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
+
+static struct platform_driver dw_mci_pltfm_driver = {
+	.remove		= __exit_p(dw_mci_pltfm_remove),
+	.driver		= {
+		.name		= "dw_mmc",
+		.pm		= &dw_mci_pltfm_pmops,
+	},
+};
+
+static int __init dw_mci_init(void)
+{
+	return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe);
+}
+
+static void __exit dw_mci_exit(void)
+{
+	platform_driver_unregister(&dw_mci_pltfm_driver);
+}
+
+module_init(dw_mci_init);
+module_exit(dw_mci_exit);
+
+MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
+MODULE_AUTHOR("NXP Semiconductor VietNam");
+MODULE_AUTHOR("Imagination Technologies Ltd");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 3aaeb084191..bf3c9b456aa 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -22,7 +22,6 @@
 #include <linux/ioport.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/scatterlist.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
@@ -269,7 +268,7 @@ static void dw_mci_start_command(struct dw_mci *host,
 				 struct mmc_command *cmd, u32 cmd_flags)
 {
 	host->cmd = cmd;
-	dev_vdbg(&host->pdev->dev,
+	dev_vdbg(&host->dev,
 		 "start command: ARGR=0x%08x CMDR=0x%08x\n",
 		 cmd->arg, cmd_flags);
 
@@ -296,15 +295,25 @@ static void dw_mci_stop_dma(struct dw_mci *host)
 	}
 }
 
+static int dw_mci_get_dma_dir(struct mmc_data *data)
+{
+	if (data->flags & MMC_DATA_WRITE)
+		return DMA_TO_DEVICE;
+	else
+		return DMA_FROM_DEVICE;
+}
+
 #ifdef CONFIG_MMC_DW_IDMAC
 static void dw_mci_dma_cleanup(struct dw_mci *host)
 {
 	struct mmc_data *data = host->data;
 
 	if (data)
-		dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len,
-			     ((data->flags & MMC_DATA_WRITE)
-			      ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
+		if (!data->host_cookie)
+			dma_unmap_sg(&host->dev,
+				     data->sg,
+				     data->sg_len,
+				     dw_mci_get_dma_dir(data));
 }
 
 static void dw_mci_idmac_stop_dma(struct dw_mci *host)
@@ -327,7 +336,7 @@ static void dw_mci_idmac_complete_dma(struct dw_mci *host)
 {
 	struct mmc_data *data = host->data;
 
-	dev_vdbg(&host->pdev->dev, "DMA complete\n");
+	dev_vdbg(&host->dev, "DMA complete\n");
 
 	host->dma_ops->cleanup(host);
 
@@ -429,17 +438,15 @@ static struct dw_mci_dma_ops dw_mci_idmac_ops = {
 };
 #endif /* CONFIG_MMC_DW_IDMAC */
 
-static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
+static int dw_mci_pre_dma_transfer(struct dw_mci *host,
+				   struct mmc_data *data,
+				   bool next)
 {
 	struct scatterlist *sg;
-	unsigned int i, direction, sg_len;
-	u32 temp;
-
-	host->using_dma = 0;
+	unsigned int i, sg_len;
 
-	/* If we don't have a channel, we can't do DMA */
-	if (!host->use_dma)
-		return -ENODEV;
+	if (!next && data->host_cookie)
+		return data->host_cookie;
 
 	/*
 	 * We don't do DMA on "complex" transfers, i.e. with
@@ -448,6 +455,7 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
 	 */
 	if (data->blocks * data->blksz < DW_MCI_DMA_THRESHOLD)
 		return -EINVAL;
+
 	if (data->blksz & 3)
 		return -EINVAL;
 
@@ -456,17 +464,74 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
 			return -EINVAL;
 	}
 
-	host->using_dma = 1;
+	sg_len = dma_map_sg(&host->dev,
+			    data->sg,
+			    data->sg_len,
+			    dw_mci_get_dma_dir(data));
+	if (sg_len == 0)
+		return -EINVAL;
 
-	if (data->flags & MMC_DATA_READ)
-		direction = DMA_FROM_DEVICE;
-	else
-		direction = DMA_TO_DEVICE;
+	if (next)
+		data->host_cookie = sg_len;
+
+	return sg_len;
+}
+
+static void dw_mci_pre_req(struct mmc_host *mmc,
+			   struct mmc_request *mrq,
+			   bool is_first_req)
+{
+	struct dw_mci_slot *slot = mmc_priv(mmc);
+	struct mmc_data *data = mrq->data;
+
+	if (!slot->host->use_dma || !data)
+		return;
+
+	if (data->host_cookie) {
+		data->host_cookie = 0;
+		return;
+	}
+
+	if (dw_mci_pre_dma_transfer(slot->host, mrq->data, 1) < 0)
+		data->host_cookie = 0;
+}
+
+static void dw_mci_post_req(struct mmc_host *mmc,
+			    struct mmc_request *mrq,
+			    int err)
+{
+	struct dw_mci_slot *slot = mmc_priv(mmc);
+	struct mmc_data *data = mrq->data;
+
+	if (!slot->host->use_dma || !data)
+		return;
+
+	if (data->host_cookie)
+		dma_unmap_sg(&slot->host->dev,
+			     data->sg,
+			     data->sg_len,
+			     dw_mci_get_dma_dir(data));
+	data->host_cookie = 0;
+}
+
+static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
+{
+	int sg_len;
+	u32 temp;
+
+	host->using_dma = 0;
+
+	/* If we don't have a channel, we can't do DMA */
+	if (!host->use_dma)
+		return -ENODEV;
+
+	sg_len = dw_mci_pre_dma_transfer(host, data, 0);
+	if (sg_len < 0)
+		return sg_len;
 
-	sg_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len,
-			    direction);
+	host->using_dma = 1;
 
-	dev_vdbg(&host->pdev->dev,
+	dev_vdbg(&host->dev,
 		 "sd sg_cpu: %#lx sg_dma: %#lx sg_len: %d\n",
 		 (unsigned long)host->sg_cpu, (unsigned long)host->sg_dma,
 		 sg_len);
@@ -502,8 +567,14 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
 		host->dir_status = DW_MCI_SEND_STATUS;
 
 	if (dw_mci_submit_data_dma(host, data)) {
+		int flags = SG_MITER_ATOMIC;
+		if (host->data->flags & MMC_DATA_READ)
+			flags |= SG_MITER_TO_SG;
+		else
+			flags |= SG_MITER_FROM_SG;
+
+		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
 		host->sg = data->sg;
-		host->pio_offset = 0;
 		host->part_buf_start = 0;
 		host->part_buf_count = 0;
 
@@ -574,8 +645,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot)
 			     SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
 
 		/* enable clock */
-		mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE |
-			   SDMMC_CLKEN_LOW_PWR);
+		mci_writel(host, CLKENA, ((SDMMC_CLKEN_ENABLE |
+			   SDMMC_CLKEN_LOW_PWR) << slot->id));
 
 		/* inform CIU */
 		mci_send_cmd(slot,
@@ -588,11 +659,11 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot)
 	mci_writel(host, CTYPE, (slot->ctype << slot->id));
 }
 
-static void dw_mci_start_request(struct dw_mci *host,
-				 struct dw_mci_slot *slot)
+static void __dw_mci_start_request(struct dw_mci *host,
+				   struct dw_mci_slot *slot,
+				   struct mmc_command *cmd)
 {
 	struct mmc_request *mrq;
-	struct mmc_command *cmd;
 	struct mmc_data	*data;
 	u32 cmdflags;
 
@@ -610,14 +681,13 @@ static void dw_mci_start_request(struct dw_mci *host,
 	host->completed_events = 0;
 	host->data_status = 0;
 
-	data = mrq->data;
+	data = cmd->data;
 	if (data) {
 		dw_mci_set_timeout(host);
 		mci_writel(host, BYTCNT, data->blksz*data->blocks);
 		mci_writel(host, BLKSIZ, data->blksz);
 	}
 
-	cmd = mrq->cmd;
 	cmdflags = dw_mci_prepare_command(slot->mmc, cmd);
 
 	/* this is the first command, send the initialization clock */
@@ -635,6 +705,16 @@ static void dw_mci_start_request(struct dw_mci *host,
 		host->stop_cmdr = dw_mci_prepare_command(slot->mmc, mrq->stop);
 }
 
+static void dw_mci_start_request(struct dw_mci *host,
+				 struct dw_mci_slot *slot)
+{
+	struct mmc_request *mrq = slot->mrq;
+	struct mmc_command *cmd;
+
+	cmd = mrq->sbc ? mrq->sbc : mrq->cmd;
+	__dw_mci_start_request(host, slot, cmd);
+}
+
 /* must be called with host->lock held */
 static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot,
 				 struct mmc_request *mrq)
@@ -698,12 +778,15 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		break;
 	}
 
+	regs = mci_readl(slot->host, UHS_REG);
+
 	/* DDR mode set */
-	if (ios->timing == MMC_TIMING_UHS_DDR50) {
-		regs = mci_readl(slot->host, UHS_REG);
+	if (ios->timing == MMC_TIMING_UHS_DDR50)
 		regs |= (0x1 << slot->id) << 16;
-		mci_writel(slot->host, UHS_REG, regs);
-	}
+	else
+		regs &= ~(0x1 << slot->id) << 16;
+
+	mci_writel(slot->host, UHS_REG, regs);
 
 	if (ios->clock) {
 		/*
@@ -783,6 +866,8 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
 
 static const struct mmc_host_ops dw_mci_ops = {
 	.request		= dw_mci_request,
+	.pre_req		= dw_mci_pre_req,
+	.post_req		= dw_mci_post_req,
 	.set_ios		= dw_mci_set_ios,
 	.get_ro			= dw_mci_get_ro,
 	.get_cd			= dw_mci_get_cd,
@@ -804,12 +889,12 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
 		slot = list_entry(host->queue.next,
 				  struct dw_mci_slot, queue_node);
 		list_del(&slot->queue_node);
-		dev_vdbg(&host->pdev->dev, "list not empty: %s is next\n",
+		dev_vdbg(&host->dev, "list not empty: %s is next\n",
 			 mmc_hostname(slot->mmc));
 		host->state = STATE_SENDING_CMD;
 		dw_mci_start_request(host, slot);
 	} else {
-		dev_vdbg(&host->pdev->dev, "list empty\n");
+		dev_vdbg(&host->dev, "list empty\n");
 		host->state = STATE_IDLE;
 	}
 
@@ -889,7 +974,14 @@ static void dw_mci_tasklet_func(unsigned long priv)
 			cmd = host->cmd;
 			host->cmd = NULL;
 			set_bit(EVENT_CMD_COMPLETE, &host->completed_events);
-			dw_mci_command_complete(host, host->mrq->cmd);
+			dw_mci_command_complete(host, cmd);
+			if (cmd == host->mrq->sbc && !cmd->error) {
+				prev_state = state = STATE_SENDING_CMD;
+				__dw_mci_start_request(host, host->cur_slot,
+						       host->mrq->cmd);
+				goto unlock;
+			}
+
 			if (!host->mrq->data || cmd->error) {
 				dw_mci_request_end(host, host->mrq);
 				goto unlock;
@@ -941,7 +1033,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
 					data->bytes_xfered = 0;
 					data->error = -ETIMEDOUT;
 				} else {
-					dev_err(&host->pdev->dev,
+					dev_err(&host->dev,
 						"data FIFO error "
 						"(status=%08x)\n",
 						status);
@@ -953,6 +1045,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
 				 * generates a block interrupt, hence setting
 				 * the scatter-gather pointer to NULL.
 				 */
+				sg_miter_stop(&host->sg_miter);
 				host->sg = NULL;
 				ctrl = mci_readl(host, CTRL);
 				ctrl |= SDMMC_CTRL_FIFO_RESET;
@@ -967,6 +1060,12 @@ static void dw_mci_tasklet_func(unsigned long priv)
 				goto unlock;
 			}
 
+			if (host->mrq->sbc && !data->error) {
+				data->stop->error = 0;
+				dw_mci_request_end(host, host->mrq);
+				goto unlock;
+			}
+
 			prev_state = state = STATE_SENDING_STOP;
 			if (!data->error)
 				send_stop_cmd(host, data);
@@ -1286,54 +1385,44 @@ static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt)
 
 static void dw_mci_read_data_pio(struct dw_mci *host)
 {
-	struct scatterlist *sg = host->sg;
-	void *buf = sg_virt(sg);
-	unsigned int offset = host->pio_offset;
+	struct sg_mapping_iter *sg_miter = &host->sg_miter;
+	void *buf;
+	unsigned int offset;
 	struct mmc_data	*data = host->data;
 	int shift = host->data_shift;
 	u32 status;
 	unsigned int nbytes = 0, len;
+	unsigned int remain, fcnt;
 
 	do {
-		len = host->part_buf_count +
-			(SDMMC_GET_FCNT(mci_readl(host, STATUS)) << shift);
-		if (offset + len <= sg->length) {
+		if (!sg_miter_next(sg_miter))
+			goto done;
+
+		host->sg = sg_miter->__sg;
+		buf = sg_miter->addr;
+		remain = sg_miter->length;
+		offset = 0;
+
+		do {
+			fcnt = (SDMMC_GET_FCNT(mci_readl(host, STATUS))
+					<< shift) + host->part_buf_count;
+			len = min(remain, fcnt);
+			if (!len)
+				break;
 			dw_mci_pull_data(host, (void *)(buf + offset), len);
-
 			offset += len;
 			nbytes += len;
-
-			if (offset == sg->length) {
-				flush_dcache_page(sg_page(sg));
-				host->sg = sg = sg_next(sg);
-				if (!sg)
-					goto done;
-
-				offset = 0;
-				buf = sg_virt(sg);
-			}
-		} else {
-			unsigned int remaining = sg->length - offset;
-			dw_mci_pull_data(host, (void *)(buf + offset),
-					 remaining);
-			nbytes += remaining;
-
-			flush_dcache_page(sg_page(sg));
-			host->sg = sg = sg_next(sg);
-			if (!sg)
-				goto done;
-
-			offset = len - remaining;
-			buf = sg_virt(sg);
-			dw_mci_pull_data(host, buf, offset);
-			nbytes += offset;
-		}
+			remain -= len;
+		} while (remain);
+		sg_miter->consumed = offset;
 
 		status = mci_readl(host, MINTSTS);
 		mci_writel(host, RINTSTS, SDMMC_INT_RXDR);
 		if (status & DW_MCI_DATA_ERROR_FLAGS) {
 			host->data_status = status;
 			data->bytes_xfered += nbytes;
+			sg_miter_stop(sg_miter);
+			host->sg = NULL;
 			smp_wmb();
 
 			set_bit(EVENT_DATA_ERROR, &host->pending_events);
@@ -1342,65 +1431,66 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
 			return;
 		}
 	} while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/
-	host->pio_offset = offset;
 	data->bytes_xfered += nbytes;
+
+	if (!remain) {
+		if (!sg_miter_next(sg_miter))
+			goto done;
+		sg_miter->consumed = 0;
+	}
+	sg_miter_stop(sg_miter);
 	return;
 
 done:
 	data->bytes_xfered += nbytes;
+	sg_miter_stop(sg_miter);
+	host->sg = NULL;
 	smp_wmb();
 	set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
 }
 
 static void dw_mci_write_data_pio(struct dw_mci *host)
 {
-	struct scatterlist *sg = host->sg;
-	void *buf = sg_virt(sg);
-	unsigned int offset = host->pio_offset;
+	struct sg_mapping_iter *sg_miter = &host->sg_miter;
+	void *buf;
+	unsigned int offset;
 	struct mmc_data	*data = host->data;
 	int shift = host->data_shift;
 	u32 status;
 	unsigned int nbytes = 0, len;
+	unsigned int fifo_depth = host->fifo_depth;
+	unsigned int remain, fcnt;
 
 	do {
-		len = ((host->fifo_depth -
-			SDMMC_GET_FCNT(mci_readl(host, STATUS))) << shift)
-			- host->part_buf_count;
-		if (offset + len <= sg->length) {
+		if (!sg_miter_next(sg_miter))
+			goto done;
+
+		host->sg = sg_miter->__sg;
+		buf = sg_miter->addr;
+		remain = sg_miter->length;
+		offset = 0;
+
+		do {
+			fcnt = ((fifo_depth -
+				 SDMMC_GET_FCNT(mci_readl(host, STATUS)))
+					<< shift) - host->part_buf_count;
+			len = min(remain, fcnt);
+			if (!len)
+				break;
 			host->push_data(host, (void *)(buf + offset), len);
-
 			offset += len;
 			nbytes += len;
-			if (offset == sg->length) {
-				host->sg = sg = sg_next(sg);
-				if (!sg)
-					goto done;
-
-				offset = 0;
-				buf = sg_virt(sg);
-			}
-		} else {
-			unsigned int remaining = sg->length - offset;
-
-			host->push_data(host, (void *)(buf + offset),
-					remaining);
-			nbytes += remaining;
-
-			host->sg = sg = sg_next(sg);
-			if (!sg)
-				goto done;
-
-			offset = len - remaining;
-			buf = sg_virt(sg);
-			host->push_data(host, (void *)buf, offset);
-			nbytes += offset;
-		}
+			remain -= len;
+		} while (remain);
+		sg_miter->consumed = offset;
 
 		status = mci_readl(host, MINTSTS);
 		mci_writel(host, RINTSTS, SDMMC_INT_TXDR);
 		if (status & DW_MCI_DATA_ERROR_FLAGS) {
 			host->data_status = status;
 			data->bytes_xfered += nbytes;
+			sg_miter_stop(sg_miter);
+			host->sg = NULL;
 
 			smp_wmb();
 
@@ -1410,12 +1500,20 @@ static void dw_mci_write_data_pio(struct dw_mci *host)
 			return;
 		}
 	} while (status & SDMMC_INT_TXDR); /* if TXDR write again */
-	host->pio_offset = offset;
 	data->bytes_xfered += nbytes;
+
+	if (!remain) {
+		if (!sg_miter_next(sg_miter))
+			goto done;
+		sg_miter->consumed = 0;
+	}
+	sg_miter_stop(sg_miter);
 	return;
 
 done:
 	data->bytes_xfered += nbytes;
+	sg_miter_stop(sg_miter);
+	host->sg = NULL;
 	smp_wmb();
 	set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
 }
@@ -1618,6 +1716,7 @@ static void dw_mci_work_routine_card(struct work_struct *work)
 				 * block interrupt, hence setting the
 				 * scatter-gather pointer to NULL.
 				 */
+				sg_miter_stop(&host->sg_miter);
 				host->sg = NULL;
 
 				ctrl = mci_readl(host, CTRL);
@@ -1651,7 +1750,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 	struct mmc_host *mmc;
 	struct dw_mci_slot *slot;
 
-	mmc = mmc_alloc_host(sizeof(struct dw_mci_slot), &host->pdev->dev);
+	mmc = mmc_alloc_host(sizeof(struct dw_mci_slot), &host->dev);
 	if (!mmc)
 		return -ENOMEM;
 
@@ -1678,8 +1777,9 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 
 	if (host->pdata->caps)
 		mmc->caps = host->pdata->caps;
-	else
-		mmc->caps = 0;
+
+	if (host->pdata->caps2)
+		mmc->caps2 = host->pdata->caps2;
 
 	if (host->pdata->get_bus_wd)
 		if (host->pdata->get_bus_wd(slot->id) >= 4)
@@ -1688,13 +1788,11 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 	if (host->pdata->quirks & DW_MCI_QUIRK_HIGHSPEED)
 		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 
-#ifdef CONFIG_MMC_DW_IDMAC
-	mmc->max_segs = host->ring_size;
-	mmc->max_blk_size = 65536;
-	mmc->max_blk_count = host->ring_size;
-	mmc->max_seg_size = 0x1000;
-	mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count;
-#else
+	if (mmc->caps2 & MMC_CAP2_POWEROFF_NOTIFY)
+		mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT;
+	else
+		mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE;
+
 	if (host->pdata->blk_settings) {
 		mmc->max_segs = host->pdata->blk_settings->max_segs;
 		mmc->max_blk_size = host->pdata->blk_settings->max_blk_size;
@@ -1703,13 +1801,20 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 		mmc->max_seg_size = host->pdata->blk_settings->max_seg_size;
 	} else {
 		/* Useful defaults if platform data is unset. */
+#ifdef CONFIG_MMC_DW_IDMAC
+		mmc->max_segs = host->ring_size;
+		mmc->max_blk_size = 65536;
+		mmc->max_blk_count = host->ring_size;
+		mmc->max_seg_size = 0x1000;
+		mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count;
+#else
 		mmc->max_segs = 64;
 		mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
 		mmc->max_blk_count = 512;
 		mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
 		mmc->max_seg_size = mmc->max_req_size;
-	}
 #endif /* CONFIG_MMC_DW_IDMAC */
+	}
 
 	host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
 	if (IS_ERR(host->vmmc)) {
@@ -1757,10 +1862,10 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
 static void dw_mci_init_dma(struct dw_mci *host)
 {
 	/* Alloc memory for sg translation */
-	host->sg_cpu = dma_alloc_coherent(&host->pdev->dev, PAGE_SIZE,
+	host->sg_cpu = dma_alloc_coherent(&host->dev, PAGE_SIZE,
 					  &host->sg_dma, GFP_KERNEL);
 	if (!host->sg_cpu) {
-		dev_err(&host->pdev->dev, "%s: could not alloc DMA memory\n",
+		dev_err(&host->dev, "%s: could not alloc DMA memory\n",
 			__func__);
 		goto no_dma;
 	}
@@ -1768,7 +1873,7 @@ static void dw_mci_init_dma(struct dw_mci *host)
 	/* Determine which DMA interface to use */
 #ifdef CONFIG_MMC_DW_IDMAC
 	host->dma_ops = &dw_mci_idmac_ops;
-	dev_info(&host->pdev->dev, "Using internal DMA controller.\n");
+	dev_info(&host->dev, "Using internal DMA controller.\n");
 #endif
 
 	if (!host->dma_ops)
@@ -1776,12 +1881,12 @@ static void dw_mci_init_dma(struct dw_mci *host)
 
 	if (host->dma_ops->init) {
 		if (host->dma_ops->init(host)) {
-			dev_err(&host->pdev->dev, "%s: Unable to initialize "
+			dev_err(&host->dev, "%s: Unable to initialize "
 				"DMA Controller.\n", __func__);
 			goto no_dma;
 		}
 	} else {
-		dev_err(&host->pdev->dev, "DMA initialization not found.\n");
+		dev_err(&host->dev, "DMA initialization not found.\n");
 		goto no_dma;
 	}
 
@@ -1789,7 +1894,7 @@ static void dw_mci_init_dma(struct dw_mci *host)
 	return;
 
 no_dma:
-	dev_info(&host->pdev->dev, "Using PIO mode.\n");
+	dev_info(&host->dev, "Using PIO mode.\n");
 	host->use_dma = 0;
 	return;
 }
@@ -1815,61 +1920,37 @@ static bool mci_wait_reset(struct device *dev, struct dw_mci *host)
 	return false;
 }
 
-static int dw_mci_probe(struct platform_device *pdev)
+int dw_mci_probe(struct dw_mci *host)
 {
-	struct dw_mci *host;
-	struct resource	*regs;
-	struct dw_mci_board *pdata;
-	int irq, ret, i, width;
+	int width, i, ret = 0;
 	u32 fifo_size;
 
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!regs)
-		return -ENXIO;
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
-
-	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
-	if (!host)
-		return -ENOMEM;
-
-	host->pdev = pdev;
-	host->pdata = pdata = pdev->dev.platform_data;
-	if (!pdata || !pdata->init) {
-		dev_err(&pdev->dev,
+	if (!host->pdata || !host->pdata->init) {
+		dev_err(&host->dev,
 			"Platform data must supply init function\n");
-		ret = -ENODEV;
-		goto err_freehost;
+		return -ENODEV;
 	}
 
-	if (!pdata->select_slot && pdata->num_slots > 1) {
-		dev_err(&pdev->dev,
+	if (!host->pdata->select_slot && host->pdata->num_slots > 1) {
+		dev_err(&host->dev,
 			"Platform data must supply select_slot function\n");
-		ret = -ENODEV;
-		goto err_freehost;
+		return -ENODEV;
 	}
 
-	if (!pdata->bus_hz) {
-		dev_err(&pdev->dev,
+	if (!host->pdata->bus_hz) {
+		dev_err(&host->dev,
 			"Platform data must supply bus speed\n");
-		ret = -ENODEV;
-		goto err_freehost;
+		return -ENODEV;
 	}
 
-	host->bus_hz = pdata->bus_hz;
-	host->quirks = pdata->quirks;
+	host->bus_hz = host->pdata->bus_hz;
+	host->quirks = host->pdata->quirks;
 
 	spin_lock_init(&host->lock);
 	INIT_LIST_HEAD(&host->queue);
 
-	ret = -ENOMEM;
-	host->regs = ioremap(regs->start, resource_size(regs));
-	if (!host->regs)
-		goto err_freehost;
 
-	host->dma_ops = pdata->dma_ops;
+	host->dma_ops = host->pdata->dma_ops;
 	dw_mci_init_dma(host);
 
 	/*
@@ -1899,7 +1980,7 @@ static int dw_mci_probe(struct platform_device *pdev)
 	}
 
 	/* Reset all blocks */
-	if (!mci_wait_reset(&pdev->dev, host)) {
+	if (!mci_wait_reset(&host->dev, host)) {
 		ret = -ENODEV;
 		goto err_dmaunmap;
 	}
@@ -1923,7 +2004,7 @@ static int dw_mci_probe(struct platform_device *pdev)
 		 * should put it in the platform data.
 		 */
 		fifo_size = mci_readl(host, FIFOTH);
-		fifo_size = 1 + ((fifo_size >> 16) & 0x7ff);
+		fifo_size = 1 + ((fifo_size >> 16) & 0xfff);
 	} else {
 		fifo_size = host->pdata->fifo_depth;
 	}
@@ -1942,13 +2023,10 @@ static int dw_mci_probe(struct platform_device *pdev)
 	if (!dw_mci_card_workqueue)
 		goto err_dmaunmap;
 	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
-
-	ret = request_irq(irq, dw_mci_interrupt, 0, "dw-mci", host);
+	ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
 	if (ret)
 		goto err_workqueue;
 
-	platform_set_drvdata(pdev, host);
-
 	if (host->pdata->num_slots)
 		host->num_slots = host->pdata->num_slots;
 	else
@@ -1968,7 +2046,7 @@ static int dw_mci_probe(struct platform_device *pdev)
 	 * Need to check the version-id and set data-offset for DATA register.
 	 */
 	host->verid = SDMMC_GET_VERID(mci_readl(host, VERID));
-	dev_info(&pdev->dev, "Version ID is %04x\n", host->verid);
+	dev_info(&host->dev, "Version ID is %04x\n", host->verid);
 
 	if (host->verid < DW_MMC_240A)
 		host->data_offset = DATA_OFFSET;
@@ -1985,12 +2063,12 @@ static int dw_mci_probe(struct platform_device *pdev)
 		   DW_MCI_ERROR_FLAGS | SDMMC_INT_CD);
 	mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */
 
-	dev_info(&pdev->dev, "DW MMC controller at irq %d, "
+	dev_info(&host->dev, "DW MMC controller at irq %d, "
 		 "%d bit host data width, "
 		 "%u deep fifo\n",
-		 irq, width, fifo_size);
+		 host->irq, width, fifo_size);
 	if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO)
-		dev_info(&pdev->dev, "Internal DMAC interrupt fix enabled.\n");
+		dev_info(&host->dev, "Internal DMAC interrupt fix enabled.\n");
 
 	return 0;
 
@@ -2001,7 +2079,7 @@ err_init_slot:
 			dw_mci_cleanup_slot(host->slot[i], i);
 		i--;
 	}
-	free_irq(irq, host);
+	free_irq(host->irq, host);
 
 err_workqueue:
 	destroy_workqueue(dw_mci_card_workqueue);
@@ -2009,33 +2087,26 @@ err_workqueue:
 err_dmaunmap:
 	if (host->use_dma && host->dma_ops->exit)
 		host->dma_ops->exit(host);
-	dma_free_coherent(&host->pdev->dev, PAGE_SIZE,
+	dma_free_coherent(&host->dev, PAGE_SIZE,
 			  host->sg_cpu, host->sg_dma);
-	iounmap(host->regs);
 
 	if (host->vmmc) {
 		regulator_disable(host->vmmc);
 		regulator_put(host->vmmc);
 	}
-
-
-err_freehost:
-	kfree(host);
 	return ret;
 }
+EXPORT_SYMBOL(dw_mci_probe);
 
-static int __exit dw_mci_remove(struct platform_device *pdev)
+void dw_mci_remove(struct dw_mci *host)
 {
-	struct dw_mci *host = platform_get_drvdata(pdev);
 	int i;
 
 	mci_writel(host, RINTSTS, 0xFFFFFFFF);
 	mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
 
-	platform_set_drvdata(pdev, NULL);
-
 	for (i = 0; i < host->num_slots; i++) {
-		dev_dbg(&pdev->dev, "remove slot %d\n", i);
+		dev_dbg(&host->dev, "remove slot %d\n", i);
 		if (host->slot[i])
 			dw_mci_cleanup_slot(host->slot[i], i);
 	}
@@ -2044,9 +2115,9 @@ static int __exit dw_mci_remove(struct platform_device *pdev)
 	mci_writel(host, CLKENA, 0);
 	mci_writel(host, CLKSRC, 0);
 
-	free_irq(platform_get_irq(pdev, 0), host);
+	free_irq(host->irq, host);
 	destroy_workqueue(dw_mci_card_workqueue);
-	dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
+	dma_free_coherent(&host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
 
 	if (host->use_dma && host->dma_ops->exit)
 		host->dma_ops->exit(host);
@@ -2056,20 +2127,18 @@ static int __exit dw_mci_remove(struct platform_device *pdev)
 		regulator_put(host->vmmc);
 	}
 
-	iounmap(host->regs);
-
-	kfree(host);
-	return 0;
 }
+EXPORT_SYMBOL(dw_mci_remove);
 
-#ifdef CONFIG_PM
+
+
+#ifdef CONFIG_PM_SLEEP
 /*
  * TODO: we should probably disable the clock to the card in the suspend path.
  */
-static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
+int dw_mci_suspend(struct dw_mci *host)
 {
-	int i, ret;
-	struct dw_mci *host = platform_get_drvdata(pdev);
+	int i, ret = 0;
 
 	for (i = 0; i < host->num_slots; i++) {
 		struct dw_mci_slot *slot = host->slot[i];
@@ -2091,11 +2160,11 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
 
 	return 0;
 }
+EXPORT_SYMBOL(dw_mci_suspend);
 
-static int dw_mci_resume(struct platform_device *pdev)
+int dw_mci_resume(struct dw_mci *host)
 {
 	int i, ret;
-	struct dw_mci *host = platform_get_drvdata(pdev);
 
 	if (host->vmmc)
 		regulator_enable(host->vmmc);
@@ -2103,7 +2172,7 @@ static int dw_mci_resume(struct platform_device *pdev)
 	if (host->dma_ops->init)
 		host->dma_ops->init(host);
 
-	if (!mci_wait_reset(&pdev->dev, host)) {
+	if (!mci_wait_reset(&host->dev, host)) {
 		ret = -ENODEV;
 		return ret;
 	}
@@ -2125,31 +2194,19 @@ static int dw_mci_resume(struct platform_device *pdev)
 		if (ret < 0)
 			return ret;
 	}
-
 	return 0;
 }
-#else
-#define dw_mci_suspend	NULL
-#define dw_mci_resume	NULL
-#endif /* CONFIG_PM */
-
-static struct platform_driver dw_mci_driver = {
-	.remove		= __exit_p(dw_mci_remove),
-	.suspend	= dw_mci_suspend,
-	.resume		= dw_mci_resume,
-	.driver		= {
-		.name		= "dw_mmc",
-	},
-};
+EXPORT_SYMBOL(dw_mci_resume);
+#endif /* CONFIG_PM_SLEEP */
 
 static int __init dw_mci_init(void)
 {
-	return platform_driver_probe(&dw_mci_driver, dw_mci_probe);
+	printk(KERN_INFO "Synopsys Designware Multimedia Card Interface Driver");
+	return 0;
 }
 
 static void __exit dw_mci_exit(void)
 {
-	platform_driver_unregister(&dw_mci_driver);
 }
 
 module_init(dw_mci_init);
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 72c071f6e00..15c27e17c23 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -126,7 +126,7 @@
 #define SDMMC_CMD_RESP_EXP		BIT(6)
 #define SDMMC_CMD_INDX(n)		((n) & 0x1F)
 /* Status register defines */
-#define SDMMC_GET_FCNT(x)		(((x)>>17) & 0x1FF)
+#define SDMMC_GET_FCNT(x)		(((x)>>17) & 0x1FFF)
 /* Internal DMAC interrupt defines */
 #define SDMMC_IDMAC_INT_AI		BIT(9)
 #define SDMMC_IDMAC_INT_NI		BIT(8)
@@ -175,4 +175,11 @@
 	(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value))
 #endif
 
+extern int dw_mci_probe(struct dw_mci *host);
+extern void dw_mci_remove(struct dw_mci *host);
+#ifdef CONFIG_PM
+extern int dw_mci_suspend(struct dw_mci *host);
+extern int dw_mci_resume(struct dw_mci *host);
+#endif
+
 #endif /* _DW_MMC_H_ */
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index 74218ad677e..c8852a8128a 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -1012,17 +1012,7 @@ static struct platform_driver jz4740_mmc_driver = {
 	},
 };
 
-static int __init jz4740_mmc_init(void)
-{
-	return platform_driver_register(&jz4740_mmc_driver);
-}
-module_init(jz4740_mmc_init);
-
-static void __exit jz4740_mmc_exit(void)
-{
-	platform_driver_unregister(&jz4740_mmc_driver);
-}
-module_exit(jz4740_mmc_exit);
+module_platform_driver(jz4740_mmc_driver);
 
 MODULE_DESCRIPTION("JZ4740 SD/MMC controller driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 92946b84e9f..273306c68d5 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1525,7 +1525,6 @@ static struct of_device_id mmc_spi_of_match_table[] __devinitdata = {
 static struct spi_driver mmc_spi_driver = {
 	.driver = {
 		.name =		"mmc_spi",
-		.bus =		&spi_bus_type,
 		.owner =	THIS_MODULE,
 		.of_match_table = mmc_spi_of_match_table,
 	},
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index fa8dd2fda4b..032b84791a1 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -30,6 +30,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/amba/mmci.h>
 #include <linux/pm_runtime.h>
+#include <linux/types.h>
 
 #include <asm/div64.h>
 #include <asm/io.h>
@@ -53,6 +54,8 @@ static unsigned int fmax = 515633;
  * @sdio: variant supports SDIO
  * @st_clkdiv: true if using a ST-specific clock divider algorithm
  * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
+ * @pwrreg_powerup: power up value for MMCIPOWER register
+ * @signal_direction: input/out direction of bus signals can be indicated
  */
 struct variant_data {
 	unsigned int		clkreg;
@@ -63,18 +66,22 @@ struct variant_data {
 	bool			sdio;
 	bool			st_clkdiv;
 	bool			blksz_datactrl16;
+	u32			pwrreg_powerup;
+	bool			signal_direction;
 };
 
 static struct variant_data variant_arm = {
 	.fifosize		= 16 * 4,
 	.fifohalfsize		= 8 * 4,
 	.datalength_bits	= 16,
+	.pwrreg_powerup		= MCI_PWR_UP,
 };
 
 static struct variant_data variant_arm_extended_fifo = {
 	.fifosize		= 128 * 4,
 	.fifohalfsize		= 64 * 4,
 	.datalength_bits	= 16,
+	.pwrreg_powerup		= MCI_PWR_UP,
 };
 
 static struct variant_data variant_u300 = {
@@ -83,6 +90,8 @@ static struct variant_data variant_u300 = {
 	.clkreg_enable		= MCI_ST_U300_HWFCEN,
 	.datalength_bits	= 16,
 	.sdio			= true,
+	.pwrreg_powerup		= MCI_PWR_ON,
+	.signal_direction	= true,
 };
 
 static struct variant_data variant_ux500 = {
@@ -93,6 +102,8 @@ static struct variant_data variant_ux500 = {
 	.datalength_bits	= 24,
 	.sdio			= true,
 	.st_clkdiv		= true,
+	.pwrreg_powerup		= MCI_PWR_ON,
+	.signal_direction	= true,
 };
 
 static struct variant_data variant_ux500v2 = {
@@ -104,11 +115,35 @@ static struct variant_data variant_ux500v2 = {
 	.sdio			= true,
 	.st_clkdiv		= true,
 	.blksz_datactrl16	= true,
+	.pwrreg_powerup		= MCI_PWR_ON,
+	.signal_direction	= true,
 };
 
 /*
  * This must be called with host->lock held
  */
+static void mmci_write_clkreg(struct mmci_host *host, u32 clk)
+{
+	if (host->clk_reg != clk) {
+		host->clk_reg = clk;
+		writel(clk, host->base + MMCICLOCK);
+	}
+}
+
+/*
+ * This must be called with host->lock held
+ */
+static void mmci_write_pwrreg(struct mmci_host *host, u32 pwr)
+{
+	if (host->pwr_reg != pwr) {
+		host->pwr_reg = pwr;
+		writel(pwr, host->base + MMCIPOWER);
+	}
+}
+
+/*
+ * This must be called with host->lock held
+ */
 static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
 {
 	struct variant_data *variant = host->variant;
@@ -153,7 +188,7 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
 	if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8)
 		clk |= MCI_ST_8BIT_BUS;
 
-	writel(clk, host->base + MMCICLOCK);
+	mmci_write_clkreg(host, clk);
 }
 
 static void
@@ -166,14 +201,10 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
 	host->mrq = NULL;
 	host->cmd = NULL;
 
-	/*
-	 * Need to drop the host lock here; mmc_request_done may call
-	 * back into the driver...
-	 */
-	spin_unlock(&host->lock);
-	pm_runtime_put(mmc_dev(host->mmc));
 	mmc_request_done(host->mmc, mrq);
-	spin_lock(&host->lock);
+
+	pm_runtime_mark_last_busy(mmc_dev(host->mmc));
+	pm_runtime_put_autosuspend(mmc_dev(host->mmc));
 }
 
 static void mmci_set_mask1(struct mmci_host *host, unsigned int mask)
@@ -370,10 +401,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
 		.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
 		.src_maxburst = variant->fifohalfsize >> 2, /* # of words */
 		.dst_maxburst = variant->fifohalfsize >> 2, /* # of words */
+		.device_fc = false,
 	};
 	struct dma_chan *chan;
 	struct dma_device *device;
 	struct dma_async_tx_descriptor *desc;
+	enum dma_data_direction buffer_dirn;
 	int nr_sg;
 
 	/* Check if next job is already prepared */
@@ -387,10 +420,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
 	}
 
 	if (data->flags & MMC_DATA_READ) {
-		conf.direction = DMA_FROM_DEVICE;
+		conf.direction = DMA_DEV_TO_MEM;
+		buffer_dirn = DMA_FROM_DEVICE;
 		chan = host->dma_rx_channel;
 	} else {
-		conf.direction = DMA_TO_DEVICE;
+		conf.direction = DMA_MEM_TO_DEV;
+		buffer_dirn = DMA_TO_DEVICE;
 		chan = host->dma_tx_channel;
 	}
 
@@ -403,12 +438,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
 		return -EINVAL;
 
 	device = chan->device;
-	nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, conf.direction);
+	nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
 	if (nr_sg == 0)
 		return -EINVAL;
 
 	dmaengine_slave_config(chan, &conf);
-	desc = device->device_prep_slave_sg(chan, data->sg, nr_sg,
+	desc = dmaengine_prep_slave_sg(chan, data->sg, nr_sg,
 					    conf.direction, DMA_CTRL_ACK);
 	if (!desc)
 		goto unmap_exit;
@@ -426,7 +461,7 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
  unmap_exit:
 	if (!next)
 		dmaengine_terminate_all(chan);
-	dma_unmap_sg(device->dev, data->sg, data->sg_len, conf.direction);
+	dma_unmap_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
 	return -ENOMEM;
 }
 
@@ -604,6 +639,11 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 	if (data->flags & MMC_DATA_READ)
 		datactrl |= MCI_DPSM_DIRECTION;
 
+	/* The ST Micro variants has a special bit to enable SDIO */
+	if (variant->sdio && host->mmc->card)
+		if (mmc_card_sdio(host->mmc->card))
+			datactrl |= MCI_ST_DPSM_SDIOEN;
+
 	/*
 	 * Attempt to use DMA operation mode, if this
 	 * should fail, fall back to PIO mode
@@ -632,11 +672,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 		irqmask = MCI_TXFIFOHALFEMPTYMASK;
 	}
 
-	/* The ST Micro variants has a special bit to enable SDIO */
-	if (variant->sdio && host->mmc->card)
-		if (mmc_card_sdio(host->mmc->card))
-			datactrl |= MCI_ST_DPSM_SDIOEN;
-
 	writel(datactrl, base + MMCIDATACTRL);
 	writel(readl(base + MMCIMASK0) & ~MCI_DATAENDMASK, base + MMCIMASK0);
 	mmci_set_mask1(host, irqmask);
@@ -783,7 +818,24 @@ static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int rema
 		if (count <= 0)
 			break;
 
-		readsl(base + MMCIFIFO, ptr, count >> 2);
+		/*
+		 * SDIO especially may want to send something that is
+		 * not divisible by 4 (as opposed to card sectors
+		 * etc). Therefore make sure to always read the last bytes
+		 * while only doing full 32-bit reads towards the FIFO.
+		 */
+		if (unlikely(count & 0x3)) {
+			if (count < 4) {
+				unsigned char buf[4];
+				readsl(base + MMCIFIFO, buf, 1);
+				memcpy(ptr, buf, count);
+			} else {
+				readsl(base + MMCIFIFO, ptr, count >> 2);
+				count &= ~0x3;
+			}
+		} else {
+			readsl(base + MMCIFIFO, ptr, count >> 2);
+		}
 
 		ptr += count;
 		remain -= count;
@@ -818,14 +870,13 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem
 		 */
 		if (variant->sdio &&
 		    mmc_card_sdio(host->mmc->card)) {
+			u32 clk;
 			if (count < 8)
-				writel(readl(host->base + MMCICLOCK) &
-					~variant->clkreg_enable,
-					host->base + MMCICLOCK);
+				clk = host->clk_reg & ~variant->clkreg_enable;
 			else
-				writel(readl(host->base + MMCICLOCK) |
-					variant->clkreg_enable,
-					host->base + MMCICLOCK);
+				clk = host->clk_reg | variant->clkreg_enable;
+
+			mmci_write_clkreg(host, clk);
 		}
 
 		/*
@@ -1012,10 +1063,17 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct mmci_host *host = mmc_priv(mmc);
+	struct variant_data *variant = host->variant;
 	u32 pwr = 0;
 	unsigned long flags;
 	int ret;
 
+	pm_runtime_get_sync(mmc_dev(mmc));
+
+	if (host->plat->ios_handler &&
+		host->plat->ios_handler(mmc_dev(mmc), ios))
+			dev_err(mmc_dev(mmc), "platform ios_handler failed\n");
+
 	switch (ios->power_mode) {
 	case MMC_POWER_OFF:
 		if (host->vcc)
@@ -1032,22 +1090,38 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 				 * power should be rare so we print an error
 				 * and return here.
 				 */
-				return;
+				goto out;
 			}
 		}
-		if (host->plat->vdd_handler)
-			pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
-						       ios->power_mode);
-		/* The ST version does not have this, fall through to POWER_ON */
-		if (host->hw_designer != AMBA_VENDOR_ST) {
-			pwr |= MCI_PWR_UP;
-			break;
-		}
+		/*
+		 * The ST Micro variant doesn't have the PL180s MCI_PWR_UP
+		 * and instead uses MCI_PWR_ON so apply whatever value is
+		 * configured in the variant data.
+		 */
+		pwr |= variant->pwrreg_powerup;
+
+		break;
 	case MMC_POWER_ON:
 		pwr |= MCI_PWR_ON;
 		break;
 	}
 
+	if (variant->signal_direction && ios->power_mode != MMC_POWER_OFF) {
+		/*
+		 * The ST Micro variant has some additional bits
+		 * indicating signal direction for the signals in
+		 * the SD/MMC bus and feedback-clock usage.
+		 */
+		pwr |= host->plat->sigdir;
+
+		if (ios->bus_width == MMC_BUS_WIDTH_4)
+			pwr &= ~MCI_ST_DATA74DIREN;
+		else if (ios->bus_width == MMC_BUS_WIDTH_1)
+			pwr &= (~MCI_ST_DATA74DIREN &
+				~MCI_ST_DATA31DIREN &
+				~MCI_ST_DATA2DIREN);
+	}
+
 	if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) {
 		if (host->hw_designer != AMBA_VENDOR_ST)
 			pwr |= MCI_ROD;
@@ -1063,13 +1137,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	spin_lock_irqsave(&host->lock, flags);
 
 	mmci_set_clkreg(host, ios->clock);
-
-	if (host->pwr != pwr) {
-		host->pwr = pwr;
-		writel(pwr, host->base + MMCIPOWER);
-	}
+	mmci_write_pwrreg(host, pwr);
 
 	spin_unlock_irqrestore(&host->lock, flags);
+
+ out:
+	pm_runtime_mark_last_busy(mmc_dev(mmc));
+	pm_runtime_put_autosuspend(mmc_dev(mmc));
 }
 
 static int mmci_get_ro(struct mmc_host *mmc)
@@ -1245,6 +1319,7 @@ static int __devinit mmci_probe(struct amba_device *dev,
 	if (host->vcc == NULL)
 		mmc->ocr_avail = plat->ocr_mask;
 	mmc->caps = plat->capabilities;
+	mmc->caps2 = plat->capabilities2;
 
 	/*
 	 * We can do SGIO
@@ -1267,12 +1342,13 @@ static int __devinit mmci_probe(struct amba_device *dev,
 	/*
 	 * Block size can be up to 2048 bytes, but must be a power of two.
 	 */
-	mmc->max_blk_size = 2048;
+	mmc->max_blk_size = 1 << 11;
 
 	/*
-	 * No limit on the number of blocks transferred.
+	 * Limit the number of blocks transferred so that we don't overflow
+	 * the maximum request size.
 	 */
-	mmc->max_blk_count = mmc->max_req_size;
+	mmc->max_blk_count = mmc->max_req_size >> 11;
 
 	spin_lock_init(&host->lock);
 
@@ -1321,7 +1397,7 @@ static int __devinit mmci_probe(struct amba_device *dev,
 	if (ret)
 		goto unmap;
 
-	if (dev->irq[1] == NO_IRQ)
+	if (dev->irq[1] == NO_IRQ || !dev->irq[1])
 		host->singleirq = true;
 	else {
 		ret = request_irq(dev->irq[1], mmci_pio_irq, IRQF_SHARED,
@@ -1341,6 +1417,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
 
 	mmci_dma_setup(host);
 
+	pm_runtime_set_autosuspend_delay(&dev->dev, 50);
+	pm_runtime_use_autosuspend(&dev->dev);
 	pm_runtime_put(&dev->dev);
 
 	mmc_add_host(mmc);
@@ -1425,43 +1503,49 @@ static int __devexit mmci_remove(struct amba_device *dev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int mmci_suspend(struct amba_device *dev, pm_message_t state)
+#ifdef CONFIG_SUSPEND
+static int mmci_suspend(struct device *dev)
 {
-	struct mmc_host *mmc = amba_get_drvdata(dev);
+	struct amba_device *adev = to_amba_device(dev);
+	struct mmc_host *mmc = amba_get_drvdata(adev);
 	int ret = 0;
 
 	if (mmc) {
 		struct mmci_host *host = mmc_priv(mmc);
 
 		ret = mmc_suspend_host(mmc);
-		if (ret == 0)
+		if (ret == 0) {
+			pm_runtime_get_sync(dev);
 			writel(0, host->base + MMCIMASK0);
+		}
 	}
 
 	return ret;
 }
 
-static int mmci_resume(struct amba_device *dev)
+static int mmci_resume(struct device *dev)
 {
-	struct mmc_host *mmc = amba_get_drvdata(dev);
+	struct amba_device *adev = to_amba_device(dev);
+	struct mmc_host *mmc = amba_get_drvdata(adev);
 	int ret = 0;
 
 	if (mmc) {
 		struct mmci_host *host = mmc_priv(mmc);
 
 		writel(MCI_IRQENABLE, host->base + MMCIMASK0);
+		pm_runtime_put(dev);
 
 		ret = mmc_resume_host(mmc);
 	}
 
 	return ret;
 }
-#else
-#define mmci_suspend	NULL
-#define mmci_resume	NULL
 #endif
 
+static const struct dev_pm_ops mmci_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(mmci_suspend, mmci_resume)
+};
+
 static struct amba_id mmci_ids[] = {
 	{
 		.id	= 0x00041180,
@@ -1507,26 +1591,15 @@ MODULE_DEVICE_TABLE(amba, mmci_ids);
 static struct amba_driver mmci_driver = {
 	.drv		= {
 		.name	= DRIVER_NAME,
+		.pm	= &mmci_dev_pm_ops,
 	},
 	.probe		= mmci_probe,
 	.remove		= __devexit_p(mmci_remove),
-	.suspend	= mmci_suspend,
-	.resume		= mmci_resume,
 	.id_table	= mmci_ids,
 };
 
-static int __init mmci_init(void)
-{
-	return amba_driver_register(&mmci_driver);
-}
-
-static void __exit mmci_exit(void)
-{
-	amba_driver_unregister(&mmci_driver);
-}
+module_amba_driver(mmci_driver);
 
-module_init(mmci_init);
-module_exit(mmci_exit);
 module_param(fmax, uint, 0444);
 
 MODULE_DESCRIPTION("ARM PrimeCell PL180/181 Multimedia Card Interface driver");
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 79e4143ab9d..d437ccf62d6 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -13,16 +13,6 @@
 #define MCI_PWR_ON		0x03
 #define MCI_OD			(1 << 6)
 #define MCI_ROD			(1 << 7)
-/*
- * The ST Micro version does not have ROD and reuse the voltage registers
- * for direction settings
- */
-#define MCI_ST_DATA2DIREN	(1 << 2)
-#define MCI_ST_CMDDIREN		(1 << 3)
-#define MCI_ST_DATA0DIREN	(1 << 4)
-#define MCI_ST_DATA31DIREN	(1 << 5)
-#define MCI_ST_FBCLKEN		(1 << 7)
-#define MCI_ST_DATA74DIREN	(1 << 8)
 
 #define MMCICLOCK		0x004
 #define MCI_CLK_ENABLE		(1 << 8)
@@ -160,7 +150,7 @@
 	(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
 	 MCI_TXFIFOHALFEMPTYMASK)
 
-#define NR_SG		16
+#define NR_SG		128
 
 struct clk;
 struct variant_data;
@@ -189,7 +179,8 @@ struct mmci_host {
 
 	unsigned int		mclk;
 	unsigned int		cclk;
-	u32			pwr;
+	u32			pwr_reg;
+	u32			clk_reg;
 	struct mmci_platform_data *plat;
 	struct variant_data	*variant;
 
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 80d8eb143b4..1d14cda95e5 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -689,8 +689,8 @@ msmsdcc_pio_irq(int irq, void *dev_id)
 
 		/* Map the current scatter buffer */
 		local_irq_save(flags);
-		buffer = kmap_atomic(sg_page(host->pio.sg),
-				     KM_BIO_SRC_IRQ) + host->pio.sg->offset;
+		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;
@@ -700,7 +700,7 @@ msmsdcc_pio_irq(int irq, void *dev_id)
 			len = msmsdcc_pio_write(host, buffer, remain, status);
 
 		/* Unmap the buffer */
-		kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
+		kunmap_atomic(buffer);
 		local_irq_restore(flags);
 
 		host->pio.sg_off += len;
@@ -1480,18 +1480,7 @@ static struct platform_driver msmsdcc_driver = {
 	},
 };
 
-static int __init msmsdcc_init(void)
-{
-	return platform_driver_register(&msmsdcc_driver);
-}
-
-static void __exit msmsdcc_exit(void)
-{
-	platform_driver_unregister(&msmsdcc_driver);
-}
-
-module_init(msmsdcc_init);
-module_exit(msmsdcc_exit);
+module_platform_driver(msmsdcc_driver);
 
 MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 8e0fbe99404..b2058b43232 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -33,6 +33,7 @@
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/dmaengine.h>
+#include <linux/types.h>
 
 #include <asm/dma.h>
 #include <asm/irq.h>
@@ -218,6 +219,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
 	unsigned int blksz = data->blksz;
 	unsigned int datasize = nob * blksz;
 	struct scatterlist *sg;
+	enum dma_transfer_direction slave_dirn;
 	int i, nents;
 
 	if (data->flags & MMC_DATA_STREAM)
@@ -240,18 +242,21 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
 		}
 	}
 
-	if (data->flags & MMC_DATA_READ)
+	if (data->flags & MMC_DATA_READ) {
 		host->dma_dir = DMA_FROM_DEVICE;
-	else
+		slave_dirn = DMA_DEV_TO_MEM;
+	} else {
 		host->dma_dir = DMA_TO_DEVICE;
+		slave_dirn = DMA_MEM_TO_DEV;
+	}
 
 	nents = dma_map_sg(host->dma->device->dev, data->sg,
 				     data->sg_len,  host->dma_dir);
 	if (nents != data->sg_len)
 		return -EINVAL;
 
-	host->desc = host->dma->device->device_prep_slave_sg(host->dma,
-		data->sg, data->sg_len, host->dma_dir,
+	host->desc = dmaengine_prep_slave_sg(host->dma,
+		data->sg, data->sg_len, slave_dirn,
 		DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
 	if (!host->desc) {
@@ -263,6 +268,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
 	wmb();
 
 	dmaengine_submit(host->desc);
+	dma_async_issue_pending(host->dma);
 
 	return 0;
 }
@@ -706,6 +712,7 @@ static int mxcmci_setup_dma(struct mmc_host *mmc)
 	config->src_addr_width = 4;
 	config->dst_maxburst = host->burstlen;
 	config->src_maxburst = host->burstlen;
+	config->device_fc = false;
 
 	return dmaengine_slave_config(host->dma, config);
 }
@@ -1047,18 +1054,7 @@ static struct platform_driver mxcmci_driver = {
 	}
 };
 
-static int __init mxcmci_init(void)
-{
-	return platform_driver_register(&mxcmci_driver);
-}
-
-static void __exit mxcmci_exit(void)
-{
-	platform_driver_unregister(&mxcmci_driver);
-}
-
-module_init(mxcmci_init);
-module_exit(mxcmci_exit);
+module_platform_driver(mxcmci_driver);
 
 MODULE_DESCRIPTION("i.MX Multimedia Card Interface Driver");
 MODULE_AUTHOR("Sascha Hauer, Pengutronix");
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 973011f9a29..b0f2ef98818 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -38,10 +38,10 @@
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/module.h>
+#include <linux/fsl/mxs-dma.h>
 
 #include <mach/mxs.h>
 #include <mach/common.h>
-#include <mach/dma.h>
 #include <mach/mmc.h>
 
 #define DRIVER_NAME	"mxs-mmc"
@@ -154,6 +154,7 @@ struct mxs_mmc_host {
 	struct dma_chan         	*dmach;
 	struct mxs_dma_data		dma_data;
 	unsigned int			dma_dir;
+	enum dma_transfer_direction	slave_dirn;
 	u32				ssp_pio_words[SSP_PIO_NUM];
 
 	unsigned int			version;
@@ -304,7 +305,7 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id)
 }
 
 static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
-	struct mxs_mmc_host *host, unsigned int append)
+	struct mxs_mmc_host *host, unsigned long flags)
 {
 	struct dma_async_tx_descriptor *desc;
 	struct mmc_data *data = host->data;
@@ -323,8 +324,8 @@ static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
 		sg_len = SSP_PIO_NUM;
 	}
 
-	desc = host->dmach->device->device_prep_slave_sg(host->dmach,
-				sgl, sg_len, host->dma_dir, append);
+	desc = dmaengine_prep_slave_sg(host->dmach,
+				sgl, sg_len, host->slave_dirn, flags);
 	if (desc) {
 		desc->callback = mxs_mmc_dma_irq_callback;
 		desc->callback_param = host;
@@ -356,7 +357,8 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
-	desc = mxs_mmc_prep_dma(host, 0);
+	host->slave_dirn = DMA_TRANS_NONE;
+	desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
 	if (!desc)
 		goto out;
 
@@ -395,7 +397,8 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
-	desc = mxs_mmc_prep_dma(host, 0);
+	host->slave_dirn = DMA_TRANS_NONE;
+	desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
 	if (!desc)
 		goto out;
 
@@ -433,6 +436,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
 	int i;
 
 	unsigned short dma_data_dir, timeout;
+	enum dma_transfer_direction slave_dirn;
 	unsigned int data_size = 0, log2_blksz;
 	unsigned int blocks = data->blocks;
 
@@ -448,9 +452,11 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
 
 	if (data->flags & MMC_DATA_WRITE) {
 		dma_data_dir = DMA_TO_DEVICE;
+		slave_dirn = DMA_MEM_TO_DEV;
 		read = 0;
 	} else {
 		dma_data_dir = DMA_FROM_DEVICE;
+		slave_dirn = DMA_DEV_TO_MEM;
 		read = BM_SSP_CTRL0_READ;
 	}
 
@@ -510,6 +516,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
+	host->slave_dirn = DMA_TRANS_NONE;
 	desc = mxs_mmc_prep_dma(host, 0);
 	if (!desc)
 		goto out;
@@ -518,7 +525,8 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
 	WARN_ON(host->data != NULL);
 	host->data = data;
 	host->dma_dir = dma_data_dir;
-	desc = mxs_mmc_prep_dma(host, 1);
+	host->slave_dirn = slave_dirn;
+	desc = mxs_mmc_prep_dma(host, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc)
 		goto out;
 
@@ -855,18 +863,7 @@ static struct platform_driver mxs_mmc_driver = {
 	},
 };
 
-static int __init mxs_mmc_init(void)
-{
-	return platform_driver_register(&mxs_mmc_driver);
-}
-
-static void __exit mxs_mmc_exit(void)
-{
-	platform_driver_unregister(&mxs_mmc_driver);
-}
-
-module_init(mxs_mmc_init);
-module_exit(mxs_mmc_exit);
+module_platform_driver(mxs_mmc_driver);
 
 MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral");
 MODULE_AUTHOR("Freescale Semiconductor");
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index ab66f2454dc..1534b582c41 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -113,8 +113,8 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
 		const int j = i * 2;
 		u32 mask;
 
-		mask = mmc_vddrange_to_ocrmask(voltage_ranges[j],
-					       voltage_ranges[j + 1]);
+		mask = mmc_vddrange_to_ocrmask(be32_to_cpu(voltage_ranges[j]),
+					       be32_to_cpu(voltage_ranges[j + 1]));
 		if (!mask) {
 			ret = -EINVAL;
 			dev_err(dev, "OF: voltage-range #%d is invalid\n", i);
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d1fb561e089..5c2b1c10af9 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -24,9 +24,11 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
-#include <linux/workqueue.h>
 #include <linux/timer.h>
 #include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/core.h>
 #include <linux/mmc/mmc.h>
@@ -107,20 +109,8 @@
 #define SOFTRESET		(1 << 1)
 #define RESETDONE		(1 << 0)
 
-/*
- * FIXME: Most likely all the data using these _DEVID defines should come
- * from the platform_data, or implemented in controller and slot specific
- * functions.
- */
-#define OMAP_MMC1_DEVID		0
-#define OMAP_MMC2_DEVID		1
-#define OMAP_MMC3_DEVID		2
-#define OMAP_MMC4_DEVID		3
-#define OMAP_MMC5_DEVID		4
-
 #define MMC_AUTOSUSPEND_DELAY	100
 #define MMC_TIMEOUT_MS		20
-#define OMAP_MMC_MASTER_CLOCK	96000000
 #define OMAP_MMC_MIN_CLOCK	400000
 #define OMAP_MMC_MAX_CLOCK	52000000
 #define DRIVER_NAME		"omap_hsmmc"
@@ -163,11 +153,9 @@ struct omap_hsmmc_host {
 	 */
 	struct	regulator	*vcc;
 	struct	regulator	*vcc_aux;
-	struct	work_struct	mmc_carddetect_work;
 	void	__iomem		*base;
 	resource_size_t		mapbase;
 	spinlock_t		irq_lock; /* Prevent races with irq handler */
-	unsigned int		id;
 	unsigned int		dma_len;
 	unsigned int		dma_sg_idx;
 	unsigned char		bus_mode;
@@ -182,7 +170,6 @@ struct omap_hsmmc_host {
 	int			got_dbclk;
 	int			response_busy;
 	int			context_loss;
-	int			dpm_state;
 	int			vdd;
 	int			protect_card;
 	int			reqs_blocked;
@@ -244,28 +231,7 @@ static int omap_hsmmc_resume_cdirq(struct device *dev, int slot)
 
 #ifdef CONFIG_REGULATOR
 
-static int omap_hsmmc_1_set_power(struct device *dev, int slot, int power_on,
-				  int vdd)
-{
-	struct omap_hsmmc_host *host =
-		platform_get_drvdata(to_platform_device(dev));
-	int ret;
-
-	if (mmc_slot(host).before_set_reg)
-		mmc_slot(host).before_set_reg(dev, slot, power_on, vdd);
-
-	if (power_on)
-		ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
-	else
-		ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0);
-
-	if (mmc_slot(host).after_set_reg)
-		mmc_slot(host).after_set_reg(dev, slot, power_on, vdd);
-
-	return ret;
-}
-
-static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on,
+static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on,
 				   int vdd)
 {
 	struct omap_hsmmc_host *host =
@@ -278,6 +244,13 @@ static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on,
 	 */
 	if (!host->vcc)
 		return 0;
+	/*
+	 * With DT, never turn OFF the regulator. This is because
+	 * the pbias cell programming support is still missing when
+	 * booting with Device tree
+	 */
+	if (of_have_populated_dt() && !vdd)
+		return 0;
 
 	if (mmc_slot(host).before_set_reg)
 		mmc_slot(host).before_set_reg(dev, slot, power_on, vdd);
@@ -321,106 +294,16 @@ static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on,
 	return ret;
 }
 
-static int omap_hsmmc_4_set_power(struct device *dev, int slot, int power_on,
-					int vdd)
-{
-	return 0;
-}
-
-static int omap_hsmmc_1_set_sleep(struct device *dev, int slot, int sleep,
-				  int vdd, int cardsleep)
-{
-	struct omap_hsmmc_host *host =
-		platform_get_drvdata(to_platform_device(dev));
-	int mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL;
-
-	return regulator_set_mode(host->vcc, mode);
-}
-
-static int omap_hsmmc_235_set_sleep(struct device *dev, int slot, int sleep,
-				   int vdd, int cardsleep)
-{
-	struct omap_hsmmc_host *host =
-		platform_get_drvdata(to_platform_device(dev));
-	int err, mode;
-
-	/*
-	 * If we don't see a Vcc regulator, assume it's a fixed
-	 * voltage always-on regulator.
-	 */
-	if (!host->vcc)
-		return 0;
-
-	mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL;
-
-	if (!host->vcc_aux)
-		return regulator_set_mode(host->vcc, mode);
-
-	if (cardsleep) {
-		/* VCC can be turned off if card is asleep */
-		if (sleep)
-			err = mmc_regulator_set_ocr(host->mmc, host->vcc, 0);
-		else
-			err = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
-	} else
-		err = regulator_set_mode(host->vcc, mode);
-	if (err)
-		return err;
-
-	if (!mmc_slot(host).vcc_aux_disable_is_sleep)
-		return regulator_set_mode(host->vcc_aux, mode);
-
-	if (sleep)
-		return regulator_disable(host->vcc_aux);
-	else
-		return regulator_enable(host->vcc_aux);
-}
-
-static int omap_hsmmc_4_set_sleep(struct device *dev, int slot, int sleep,
-					int vdd, int cardsleep)
-{
-	return 0;
-}
-
 static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
 {
 	struct regulator *reg;
-	int ret = 0;
 	int ocr_value = 0;
 
-	switch (host->id) {
-	case OMAP_MMC1_DEVID:
-		/* On-chip level shifting via PBIAS0/PBIAS1 */
-		mmc_slot(host).set_power = omap_hsmmc_1_set_power;
-		mmc_slot(host).set_sleep = omap_hsmmc_1_set_sleep;
-		break;
-	case OMAP_MMC2_DEVID:
-	case OMAP_MMC3_DEVID:
-	case OMAP_MMC5_DEVID:
-		/* Off-chip level shifting, or none */
-		mmc_slot(host).set_power = omap_hsmmc_235_set_power;
-		mmc_slot(host).set_sleep = omap_hsmmc_235_set_sleep;
-		break;
-	case OMAP_MMC4_DEVID:
-		mmc_slot(host).set_power = omap_hsmmc_4_set_power;
-		mmc_slot(host).set_sleep = omap_hsmmc_4_set_sleep;
-	default:
-		pr_err("MMC%d configuration not supported!\n", host->id);
-		return -EINVAL;
-	}
+	mmc_slot(host).set_power = omap_hsmmc_set_power;
 
 	reg = regulator_get(host->dev, "vmmc");
 	if (IS_ERR(reg)) {
 		dev_dbg(host->dev, "vmmc regulator missing\n");
-		/*
-		* HACK: until fixed.c regulator is usable,
-		* we don't require a main regulator
-		* for MMC2 or MMC3
-		*/
-		if (host->id == OMAP_MMC1_DEVID) {
-			ret = PTR_ERR(reg);
-			goto err;
-		}
 	} else {
 		host->vcc = reg;
 		ocr_value = mmc_regulator_get_ocrmask(reg);
@@ -428,8 +311,8 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
 			mmc_slot(host).ocr_mask = ocr_value;
 		} else {
 			if (!(mmc_slot(host).ocr_mask & ocr_value)) {
-				pr_err("MMC%d ocrmask %x is not supported\n",
-					host->id, mmc_slot(host).ocr_mask);
+				dev_err(host->dev, "ocrmask %x is not supported\n",
+					mmc_slot(host).ocr_mask);
 				mmc_slot(host).ocr_mask = 0;
 				return -EINVAL;
 			}
@@ -462,11 +345,6 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
 	}
 
 	return 0;
-
-err:
-	mmc_slot(host).set_power = NULL;
-	mmc_slot(host).set_sleep = NULL;
-	return ret;
 }
 
 static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host)
@@ -474,7 +352,6 @@ static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host)
 	regulator_put(host->vcc);
 	regulator_put(host->vcc_aux);
 	mmc_slot(host).set_power = NULL;
-	mmc_slot(host).set_sleep = NULL;
 }
 
 static inline int omap_hsmmc_have_reg(void)
@@ -598,12 +475,12 @@ static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host)
 }
 
 /* Calculate divisor for the given clock frequency */
-static u16 calc_divisor(struct mmc_ios *ios)
+static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios)
 {
 	u16 dsor = 0;
 
 	if (ios->clock) {
-		dsor = DIV_ROUND_UP(OMAP_MMC_MASTER_CLOCK, ios->clock);
+		dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock);
 		if (dsor > 250)
 			dsor = 250;
 	}
@@ -623,7 +500,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host)
 
 	regval = OMAP_HSMMC_READ(host->base, SYSCTL);
 	regval = regval & ~(CLKD_MASK | DTO_MASK);
-	regval = regval | (calc_divisor(ios) << 6) | (DTO << 16);
+	regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16);
 	OMAP_HSMMC_WRITE(host->base, SYSCTL, regval);
 	OMAP_HSMMC_WRITE(host->base, SYSCTL,
 		OMAP_HSMMC_READ(host->base, SYSCTL) | ICE);
@@ -713,7 +590,7 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
 	OMAP_HSMMC_WRITE(host->base, SYSCONFIG,
 			OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE);
 
-	if (host->id == OMAP_MMC1_DEVID) {
+	if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) {
 		if (host->power_mode != MMC_POWER_OFF &&
 		    (1 << ios->vdd) <= MMC_VDD_23_24)
 			hctl = SDVS18;
@@ -1264,14 +1141,14 @@ static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host)
 	host->reqs_blocked = 0;
 	if (mmc_slot(host).get_cover_state(host->dev, host->slot_id)) {
 		if (host->protect_card) {
-			pr_info("%s: cover is closed, "
+			dev_info(host->dev, "%s: cover is closed, "
 					 "card is now accessible\n",
 					 mmc_hostname(host->mmc));
 			host->protect_card = 0;
 		}
 	} else {
 		if (!host->protect_card) {
-			pr_info("%s: cover is open, "
+			dev_info(host->dev, "%s: cover is open, "
 					 "card is now inaccessible\n",
 					 mmc_hostname(host->mmc));
 			host->protect_card = 1;
@@ -1280,17 +1157,16 @@ static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host)
 }
 
 /*
- * Work Item to notify the core about card insertion/removal
+ * irq handler to notify the core about card insertion/removal
  */
-static void omap_hsmmc_detect(struct work_struct *work)
+static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id)
 {
-	struct omap_hsmmc_host *host =
-		container_of(work, struct omap_hsmmc_host, mmc_carddetect_work);
+	struct omap_hsmmc_host *host = dev_id;
 	struct omap_mmc_slot_data *slot = &mmc_slot(host);
 	int carddetect;
 
 	if (host->suspended)
-		return;
+		return IRQ_HANDLED;
 
 	sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch");
 
@@ -1305,19 +1181,6 @@ static void omap_hsmmc_detect(struct work_struct *work)
 		mmc_detect_change(host->mmc, (HZ * 200) / 1000);
 	else
 		mmc_detect_change(host->mmc, (HZ * 50) / 1000);
-}
-
-/*
- * ISR for handling card insertion and removal
- */
-static irqreturn_t omap_hsmmc_cd_handler(int irq, void *dev_id)
-{
-	struct omap_hsmmc_host *host = (struct omap_hsmmc_host *)dev_id;
-
-	if (host->suspended)
-		return IRQ_HANDLED;
-	schedule_work(&host->mmc_carddetect_work);
-
 	return IRQ_HANDLED;
 }
 
@@ -1422,7 +1285,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
 
 	if (!next && data->host_cookie &&
 	    data->host_cookie != host->next_data.cookie) {
-		pr_warning("[%s] invalid cookie: data->host_cookie %d"
+		dev_warn(host->dev, "[%s] invalid cookie: data->host_cookie %d"
 		       " host->next_data.cookie %d\n",
 		       __func__, data->host_cookie, host->next_data.cookie);
 		data->host_cookie = 0;
@@ -1680,7 +1543,13 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		 * of external transceiver; but they all handle 1.8V.
 		 */
 		if ((OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET) &&
-			(ios->vdd == DUAL_VOLT_OCR_BIT)) {
+			(ios->vdd == DUAL_VOLT_OCR_BIT) &&
+			/*
+			 * With pbias cell programming missing, this
+			 * can't be allowed when booting with device
+			 * tree.
+			 */
+			(!of_have_populated_dt())) {
 				/*
 				 * The mmc_select_voltage fn of the core does
 				 * not seem to set the power_mode to
@@ -1765,7 +1634,7 @@ static int omap_hsmmc_enable_fclk(struct mmc_host *mmc)
 	return 0;
 }
 
-static int omap_hsmmc_disable_fclk(struct mmc_host *mmc, int lazy)
+static int omap_hsmmc_disable_fclk(struct mmc_host *mmc)
 {
 	struct omap_hsmmc_host *host = mmc_priv(mmc);
 
@@ -1799,15 +1668,8 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data)
 	if (host->pdata->get_context_loss_count)
 		context_loss = host->pdata->get_context_loss_count(host->dev);
 
-	seq_printf(s, "mmc%d:\n"
-			" enabled:\t%d\n"
-			" dpm_state:\t%d\n"
-			" nesting_cnt:\t%d\n"
-			" ctx_loss:\t%d:%d\n"
-			"\nregs:\n",
-			mmc->index, mmc->enabled ? 1 : 0,
-			host->dpm_state, mmc->nesting_cnt,
-			host->context_loss, context_loss);
+	seq_printf(s, "mmc%d:\n ctx_loss:\t%d:%d\n\nregs:\n",
+			mmc->index, host->context_loss, context_loss);
 
 	if (host->suspended) {
 		seq_printf(s, "host suspended, can't read registers\n");
@@ -1864,13 +1726,82 @@ static void omap_hsmmc_debugfs(struct mmc_host *mmc)
 
 #endif
 
-static int __init omap_hsmmc_probe(struct platform_device *pdev)
+#ifdef CONFIG_OF
+static u16 omap4_reg_offset = 0x100;
+
+static const struct of_device_id omap_mmc_of_match[] = {
+	{
+		.compatible = "ti,omap2-hsmmc",
+	},
+	{
+		.compatible = "ti,omap3-hsmmc",
+	},
+	{
+		.compatible = "ti,omap4-hsmmc",
+		.data = &omap4_reg_offset,
+	},
+	{},
+}
+MODULE_DEVICE_TABLE(of, omap_mmc_of_match);
+
+static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
+{
+	struct omap_mmc_platform_data *pdata;
+	struct device_node *np = dev->of_node;
+	u32 bus_width;
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL; /* out of memory */
+
+	if (of_find_property(np, "ti,dual-volt", NULL))
+		pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
+
+	/* This driver only supports 1 slot */
+	pdata->nr_slots = 1;
+	pdata->slots[0].switch_pin = of_get_named_gpio(np, "cd-gpios", 0);
+	pdata->slots[0].gpio_wp = of_get_named_gpio(np, "wp-gpios", 0);
+
+	if (of_find_property(np, "ti,non-removable", NULL)) {
+		pdata->slots[0].nonremovable = true;
+		pdata->slots[0].no_regulator_off_init = true;
+	}
+	of_property_read_u32(np, "ti,bus-width", &bus_width);
+	if (bus_width == 4)
+		pdata->slots[0].caps |= MMC_CAP_4_BIT_DATA;
+	else if (bus_width == 8)
+		pdata->slots[0].caps |= MMC_CAP_8_BIT_DATA;
+
+	if (of_find_property(np, "ti,needs-special-reset", NULL))
+		pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET;
+
+	return pdata;
+}
+#else
+static inline struct omap_mmc_platform_data
+			*of_get_hsmmc_pdata(struct device *dev)
+{
+	return NULL;
+}
+#endif
+
+static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 {
 	struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
 	struct mmc_host *mmc;
 	struct omap_hsmmc_host *host = NULL;
 	struct resource *res;
 	int ret, irq;
+	const struct of_device_id *match;
+
+	match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev);
+	if (match) {
+		pdata = of_get_hsmmc_pdata(&pdev->dev);
+		if (match->data) {
+			u16 *offsetp = match->data;
+			pdata->reg_offset = *offsetp;
+		}
+	}
 
 	if (pdata == NULL) {
 		dev_err(&pdev->dev, "Platform Data is missing\n");
@@ -1887,8 +1818,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	if (res == NULL || irq < 0)
 		return -ENXIO;
 
-	res->start += pdata->reg_offset;
-	res->end += pdata->reg_offset;
 	res = request_mem_region(res->start, resource_size(res), pdev->name);
 	if (res == NULL)
 		return -EBUSY;
@@ -1911,15 +1840,13 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	host->dev->dma_mask = &pdata->dma_mask;
 	host->dma_ch	= -1;
 	host->irq	= irq;
-	host->id	= pdev->id;
 	host->slot_id	= 0;
-	host->mapbase	= res->start;
+	host->mapbase	= res->start + pdata->reg_offset;
 	host->base	= ioremap(host->mapbase, SZ_4K);
 	host->power_mode = MMC_POWER_OFF;
 	host->next_data.cookie = 1;
 
 	platform_set_drvdata(pdev, host);
-	INIT_WORK(&host->mmc_carddetect_work, omap_hsmmc_detect);
 
 	mmc->ops	= &omap_hsmmc_ops;
 
@@ -1930,8 +1857,12 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	if (mmc_slot(host).vcc_aux_disable_is_sleep)
 		mmc_slot(host).no_off = 1;
 
-	mmc->f_min	= OMAP_MMC_MIN_CLOCK;
-	mmc->f_max	= OMAP_MMC_MAX_CLOCK;
+	mmc->f_min = OMAP_MMC_MIN_CLOCK;
+
+	if (pdata->max_freq > 0)
+		mmc->f_max = pdata->max_freq;
+	else
+		mmc->f_max = OMAP_MMC_MAX_CLOCK;
 
 	spin_lock_init(&host->irq_lock);
 
@@ -1942,9 +1873,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 		goto err1;
 	}
 
-	omap_hsmmc_context_save(host);
-
-	mmc->caps |= MMC_CAP_DISABLE;
 	if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
 		dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
 		mmc->caps2 |= MMC_CAP2_NO_MULTI_READ;
@@ -1955,6 +1883,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY);
 	pm_runtime_use_autosuspend(host->dev);
 
+	omap_hsmmc_context_save(host);
+
 	if (cpu_is_omap2430()) {
 		host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
 		/*
@@ -1995,32 +1925,19 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 
 	omap_hsmmc_conf_bus_power(host);
 
-	/* Select DMA lines */
-	switch (host->id) {
-	case OMAP_MMC1_DEVID:
-		host->dma_line_tx = OMAP24XX_DMA_MMC1_TX;
-		host->dma_line_rx = OMAP24XX_DMA_MMC1_RX;
-		break;
-	case OMAP_MMC2_DEVID:
-		host->dma_line_tx = OMAP24XX_DMA_MMC2_TX;
-		host->dma_line_rx = OMAP24XX_DMA_MMC2_RX;
-		break;
-	case OMAP_MMC3_DEVID:
-		host->dma_line_tx = OMAP34XX_DMA_MMC3_TX;
-		host->dma_line_rx = OMAP34XX_DMA_MMC3_RX;
-		break;
-	case OMAP_MMC4_DEVID:
-		host->dma_line_tx = OMAP44XX_DMA_MMC4_TX;
-		host->dma_line_rx = OMAP44XX_DMA_MMC4_RX;
-		break;
-	case OMAP_MMC5_DEVID:
-		host->dma_line_tx = OMAP44XX_DMA_MMC5_TX;
-		host->dma_line_rx = OMAP44XX_DMA_MMC5_RX;
-		break;
-	default:
-		dev_err(mmc_dev(host->mmc), "Invalid MMC id\n");
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+	if (!res) {
+		dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
 		goto err_irq;
 	}
+	host->dma_line_tx = res->start;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+	if (!res) {
+		dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
+		goto err_irq;
+	}
+	host->dma_line_rx = res->start;
 
 	/* Request IRQ for MMC operations */
 	ret = request_irq(host->irq, omap_hsmmc_irq, 0,
@@ -2049,10 +1966,11 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 
 	/* Request IRQ for card detect */
 	if ((mmc_slot(host).card_detect_irq)) {
-		ret = request_irq(mmc_slot(host).card_detect_irq,
-				  omap_hsmmc_cd_handler,
-				  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-				  mmc_hostname(mmc), host);
+		ret = request_threaded_irq(mmc_slot(host).card_detect_irq,
+					   NULL,
+					   omap_hsmmc_detect,
+					   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+					   mmc_hostname(mmc), host);
 		if (ret) {
 			dev_dbg(mmc_dev(host->mmc),
 				"Unable to grab MMC CD IRQ\n");
@@ -2098,8 +2016,8 @@ err_reg:
 err_irq_cd_init:
 	free_irq(host->irq, host);
 err_irq:
-	pm_runtime_mark_last_busy(host->dev);
-	pm_runtime_put_autosuspend(host->dev);
+	pm_runtime_put_sync(host->dev);
+	pm_runtime_disable(host->dev);
 	clk_put(host->fclk);
 	if (host->got_dbclk) {
 		clk_disable(host->dbclk);
@@ -2116,36 +2034,33 @@ err:
 	return ret;
 }
 
-static int omap_hsmmc_remove(struct platform_device *pdev)
+static int __devexit omap_hsmmc_remove(struct platform_device *pdev)
 {
 	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
 	struct resource *res;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
-		mmc_remove_host(host->mmc);
-		if (host->use_reg)
-			omap_hsmmc_reg_put(host);
-		if (host->pdata->cleanup)
-			host->pdata->cleanup(&pdev->dev);
-		free_irq(host->irq, host);
-		if (mmc_slot(host).card_detect_irq)
-			free_irq(mmc_slot(host).card_detect_irq, host);
-		flush_work_sync(&host->mmc_carddetect_work);
-
-		pm_runtime_put_sync(host->dev);
-		pm_runtime_disable(host->dev);
-		clk_put(host->fclk);
-		if (host->got_dbclk) {
-			clk_disable(host->dbclk);
-			clk_put(host->dbclk);
-		}
+	pm_runtime_get_sync(host->dev);
+	mmc_remove_host(host->mmc);
+	if (host->use_reg)
+		omap_hsmmc_reg_put(host);
+	if (host->pdata->cleanup)
+		host->pdata->cleanup(&pdev->dev);
+	free_irq(host->irq, host);
+	if (mmc_slot(host).card_detect_irq)
+		free_irq(mmc_slot(host).card_detect_irq, host);
 
-		mmc_free_host(host->mmc);
-		iounmap(host->base);
-		omap_hsmmc_gpio_free(pdev->dev.platform_data);
+	pm_runtime_put_sync(host->dev);
+	pm_runtime_disable(host->dev);
+	clk_put(host->fclk);
+	if (host->got_dbclk) {
+		clk_disable(host->dbclk);
+		clk_put(host->dbclk);
 	}
 
+	mmc_free_host(host->mmc);
+	iounmap(host->base);
+	omap_hsmmc_gpio_free(pdev->dev.platform_data);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res)
 		release_mem_region(res->start, resource_size(res));
@@ -2158,50 +2073,45 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 static int omap_hsmmc_suspend(struct device *dev)
 {
 	int ret = 0;
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
+	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
 
-	if (host && host->suspended)
+	if (!host)
 		return 0;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
-		host->suspended = 1;
-		if (host->pdata->suspend) {
-			ret = host->pdata->suspend(&pdev->dev,
-							host->slot_id);
-			if (ret) {
-				dev_dbg(mmc_dev(host->mmc),
-					"Unable to handle MMC board"
-					" level suspend\n");
-				host->suspended = 0;
-				return ret;
-			}
-		}
-		cancel_work_sync(&host->mmc_carddetect_work);
-		ret = mmc_suspend_host(host->mmc);
+	if (host && host->suspended)
+		return 0;
 
+	pm_runtime_get_sync(host->dev);
+	host->suspended = 1;
+	if (host->pdata->suspend) {
+		ret = host->pdata->suspend(dev, host->slot_id);
 		if (ret) {
+			dev_dbg(dev, "Unable to handle MMC board"
+					" level suspend\n");
 			host->suspended = 0;
-			if (host->pdata->resume) {
-				ret = host->pdata->resume(&pdev->dev,
-							  host->slot_id);
-				if (ret)
-					dev_dbg(mmc_dev(host->mmc),
-						"Unmask interrupt failed\n");
-			}
-			goto err;
+			return ret;
 		}
+	}
+	ret = mmc_suspend_host(host->mmc);
 
-		if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) {
-			omap_hsmmc_disable_irq(host);
-			OMAP_HSMMC_WRITE(host->base, HCTL,
-				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
+	if (ret) {
+		host->suspended = 0;
+		if (host->pdata->resume) {
+			ret = host->pdata->resume(dev, host->slot_id);
+			if (ret)
+				dev_dbg(dev, "Unmask interrupt failed\n");
 		}
-		if (host->got_dbclk)
-			clk_disable(host->dbclk);
+		goto err;
+	}
 
+	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) {
+		omap_hsmmc_disable_irq(host);
+		OMAP_HSMMC_WRITE(host->base, HCTL,
+				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
 	}
+
+	if (host->got_dbclk)
+		clk_disable(host->dbclk);
 err:
 	pm_runtime_put_sync(host->dev);
 	return ret;
@@ -2211,38 +2121,37 @@ err:
 static int omap_hsmmc_resume(struct device *dev)
 {
 	int ret = 0;
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
+	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
+
+	if (!host)
+		return 0;
 
 	if (host && !host->suspended)
 		return 0;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
+	pm_runtime_get_sync(host->dev);
 
-		if (host->got_dbclk)
-			clk_enable(host->dbclk);
+	if (host->got_dbclk)
+		clk_enable(host->dbclk);
 
-		if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
-			omap_hsmmc_conf_bus_power(host);
+	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
+		omap_hsmmc_conf_bus_power(host);
 
-		if (host->pdata->resume) {
-			ret = host->pdata->resume(&pdev->dev, host->slot_id);
-			if (ret)
-				dev_dbg(mmc_dev(host->mmc),
-					"Unmask interrupt failed\n");
-		}
+	if (host->pdata->resume) {
+		ret = host->pdata->resume(dev, host->slot_id);
+		if (ret)
+			dev_dbg(dev, "Unmask interrupt failed\n");
+	}
 
-		omap_hsmmc_protect_card(host);
+	omap_hsmmc_protect_card(host);
 
-		/* Notify the core to resume the host */
-		ret = mmc_resume_host(host->mmc);
-		if (ret == 0)
-			host->suspended = 0;
+	/* Notify the core to resume the host */
+	ret = mmc_resume_host(host->mmc);
+	if (ret == 0)
+		host->suspended = 0;
 
-		pm_runtime_mark_last_busy(host->dev);
-		pm_runtime_put_autosuspend(host->dev);
-	}
+	pm_runtime_mark_last_busy(host->dev);
+	pm_runtime_put_autosuspend(host->dev);
 
 	return ret;
 
@@ -2259,7 +2168,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev)
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_save(host);
-	dev_dbg(mmc_dev(host->mmc), "disabled\n");
+	dev_dbg(dev, "disabled\n");
 
 	return 0;
 }
@@ -2270,7 +2179,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_restore(host);
-	dev_dbg(mmc_dev(host->mmc), "enabled\n");
+	dev_dbg(dev, "enabled\n");
 
 	return 0;
 }
@@ -2283,29 +2192,17 @@ static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
 };
 
 static struct platform_driver omap_hsmmc_driver = {
-	.remove		= omap_hsmmc_remove,
+	.probe		= omap_hsmmc_probe,
+	.remove		= __devexit_p(omap_hsmmc_remove),
 	.driver		= {
 		.name = DRIVER_NAME,
 		.owner = THIS_MODULE,
 		.pm = &omap_hsmmc_dev_pm_ops,
+		.of_match_table = of_match_ptr(omap_mmc_of_match),
 	},
 };
 
-static int __init omap_hsmmc_init(void)
-{
-	/* Register the MMC driver */
-	return platform_driver_probe(&omap_hsmmc_driver, omap_hsmmc_probe);
-}
-
-static void __exit omap_hsmmc_cleanup(void)
-{
-	/* Unregister MMC driver */
-	platform_driver_unregister(&omap_hsmmc_driver);
-}
-
-module_init(omap_hsmmc_init);
-module_exit(omap_hsmmc_cleanup);
-
+module_platform_driver(omap_hsmmc_driver);
 MODULE_DESCRIPTION("OMAP High Speed Multimedia Card driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index fc4356e00d4..cb2dc0e75ba 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -872,18 +872,7 @@ static struct platform_driver pxamci_driver = {
 	},
 };
 
-static int __init pxamci_init(void)
-{
-	return platform_driver_register(&pxamci_driver);
-}
-
-static void __exit pxamci_exit(void)
-{
-	platform_driver_unregister(&pxamci_driver);
-}
-
-module_init(pxamci_init);
-module_exit(pxamci_exit);
+module_platform_driver(pxamci_driver);
 
 MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 720f99334a7..c3622a69f43 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1606,7 +1606,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
 	host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!host->mem) {
 		dev_err(&pdev->dev,
-			"failed to get io memory region resouce.\n");
+			"failed to get io memory region resource.\n");
 
 		ret = -ENOENT;
 		goto probe_free_gpio;
@@ -1630,7 +1630,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
 
 	host->irq = platform_get_irq(pdev, 0);
 	if (host->irq == 0) {
-		dev_err(&pdev->dev, "failed to get interrupt resouce.\n");
+		dev_err(&pdev->dev, "failed to get interrupt resource.\n");
 		ret = -EINVAL;
 		goto probe_iounmap;
 	}
@@ -1914,18 +1914,7 @@ static struct platform_driver s3cmci_driver = {
 	.shutdown	= s3cmci_shutdown,
 };
 
-static int __init s3cmci_init(void)
-{
-	return platform_driver_register(&s3cmci_driver);
-}
-
-static void __exit s3cmci_exit(void)
-{
-	platform_driver_unregister(&s3cmci_driver);
-}
-
-module_init(s3cmci_init);
-module_exit(s3cmci_exit);
+module_platform_driver(s3cmci_driver);
 
 MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index b4257e70061..28a870804f6 100644
--- a/drivers/mmc/host/sdhci-cns3xxx.c
+++ b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -115,17 +115,7 @@ static struct platform_driver sdhci_cns3xxx_driver = {
 	.remove		= __devexit_p(sdhci_cns3xxx_remove),
 };
 
-static int __init sdhci_cns3xxx_init(void)
-{
-	return platform_driver_register(&sdhci_cns3xxx_driver);
-}
-module_init(sdhci_cns3xxx_init);
-
-static void __exit sdhci_cns3xxx_exit(void)
-{
-	platform_driver_unregister(&sdhci_cns3xxx_driver);
-}
-module_exit(sdhci_cns3xxx_exit);
+module_platform_driver(sdhci_cns3xxx_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for CNS3xxx");
 MODULE_AUTHOR("Scott Shu, "
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index a81312c91f7..177f697b583 100644
--- a/drivers/mmc/host/sdhci-dove.c
+++ b/drivers/mmc/host/sdhci-dove.c
@@ -20,6 +20,7 @@
  */
 
 #include <linux/io.h>
+#include <linux/module.h>
 #include <linux/mmc/host.h>
 
 #include "sdhci-pltfm.h"
@@ -88,17 +89,7 @@ static struct platform_driver sdhci_dove_driver = {
 	.remove		= __devexit_p(sdhci_dove_remove),
 };
 
-static int __init sdhci_dove_init(void)
-{
-	return platform_driver_register(&sdhci_dove_driver);
-}
-module_init(sdhci_dove_init);
-
-static void __exit sdhci_dove_exit(void)
-{
-	platform_driver_unregister(&sdhci_dove_driver);
-}
-module_exit(sdhci_dove_exit);
+module_platform_driver(sdhci_dove_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Dove");
 MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, "
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 38ebc4ea259..6193a0d7bde 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -269,8 +269,9 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
 		imx_data->scratchpad = val;
 		return;
 	case SDHCI_COMMAND:
-		if ((host->cmd->opcode == MMC_STOP_TRANSMISSION)
-			&& (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT))
+		if ((host->cmd->opcode == MMC_STOP_TRANSMISSION ||
+		     host->cmd->opcode == MMC_SET_BLOCK_COUNT) &&
+	            (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT))
 			val |= SDHCI_CMD_ABORTCMD;
 
 		if (is_imx6q_usdhc(imx_data)) {
@@ -463,7 +464,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 		err = PTR_ERR(clk);
 		goto err_clk_get;
 	}
-	clk_enable(clk);
+	clk_prepare_enable(clk);
 	pltfm_host->clk = clk;
 
 	if (!is_imx25_esdhc(imx_data))
@@ -558,7 +559,7 @@ no_card_detect_irq:
 		gpio_free(boarddata->wp_gpio);
 no_card_detect_pin:
 no_board_data:
-	clk_disable(pltfm_host->clk);
+	clk_disable_unprepare(pltfm_host->clk);
 	clk_put(pltfm_host->clk);
 err_clk_get:
 	kfree(imx_data);
@@ -585,7 +586,7 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev)
 		gpio_free(boarddata->cd_gpio);
 	}
 
-	clk_disable(pltfm_host->clk);
+	clk_disable_unprepare(pltfm_host->clk);
 	clk_put(pltfm_host->clk);
 	kfree(imx_data);
 
@@ -606,17 +607,7 @@ static struct platform_driver sdhci_esdhc_imx_driver = {
 	.remove		= __devexit_p(sdhci_esdhc_imx_remove),
 };
 
-static int __init sdhci_esdhc_imx_init(void)
-{
-	return platform_driver_register(&sdhci_esdhc_imx_driver);
-}
-module_init(sdhci_esdhc_imx_init);
-
-static void __exit sdhci_esdhc_imx_exit(void)
-{
-	platform_driver_unregister(&sdhci_esdhc_imx_driver);
-}
-module_exit(sdhci_esdhc_imx_exit);
+module_platform_driver(sdhci_esdhc_imx_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC");
 MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index c3b08f11194..b97b2f5dafd 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -73,7 +73,7 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 		| (div << ESDHC_DIVIDER_SHIFT)
 		| (pre_div << ESDHC_PREDIV_SHIFT));
 	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
-	mdelay(100);
+	mdelay(1);
 out:
 	host->clock = clock;
 }
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 01e5f627e0f..f8eb1fb0c92 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -1,7 +1,7 @@
 /*
  * Freescale eSDHC controller driver.
  *
- * Copyright (c) 2007, 2010 Freescale Semiconductor, Inc.
+ * Copyright (c) 2007, 2010, 2012 Freescale Semiconductor, Inc.
  * Copyright (c) 2009 MontaVista Software, Inc.
  *
  * Authors: Xiaobo Xie <X.Xie@freescale.com>
@@ -14,6 +14,7 @@
  */
 
 #include <linux/io.h>
+#include <linux/of.h>
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/mmc/host.h>
@@ -38,6 +39,23 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg)
 	int base = reg & ~0x3;
 	int shift = (reg & 0x3) * 8;
 	u8 ret = (in_be32(host->ioaddr + base) >> shift) & 0xff;
+
+	/*
+	 * "DMA select" locates at offset 0x28 in SD specification, but on
+	 * P5020 or P3041, it locates at 0x29.
+	 */
+	if (reg == SDHCI_HOST_CONTROL) {
+		u32 dma_bits;
+
+		dma_bits = in_be32(host->ioaddr + reg);
+		/* DMA select is 22,23 bits in Protocol Control Register */
+		dma_bits = (dma_bits >> 5) & SDHCI_CTRL_DMA_MASK;
+
+		/* fixup the result */
+		ret &= ~SDHCI_CTRL_DMA_MASK;
+		ret |= dma_bits;
+	}
+
 	return ret;
 }
 
@@ -56,6 +74,21 @@ static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
 
 static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
 {
+	/*
+	 * "DMA select" location is offset 0x28 in SD specification, but on
+	 * P5020 or P3041, it's located at 0x29.
+	 */
+	if (reg == SDHCI_HOST_CONTROL) {
+		u32 dma_bits;
+
+		/* DMA select is 22,23 bits in Protocol Control Register */
+		dma_bits = (val & SDHCI_CTRL_DMA_MASK) << 5;
+		clrsetbits_be32(host->ioaddr + reg , SDHCI_CTRL_DMA_MASK << 5,
+			dma_bits);
+		val &= ~SDHCI_CTRL_DMA_MASK;
+		val |= in_be32(host->ioaddr + reg) & SDHCI_CTRL_DMA_MASK;
+	}
+
 	/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
 	if (reg == SDHCI_HOST_CONTROL)
 		val &= ~ESDHC_HOST_CONTROL_RES;
@@ -82,6 +115,34 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host)
 	return pltfm_host->clock / 256 / 16;
 }
 
+static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+	/* Workaround to reduce the clock frequency for p1010 esdhc */
+	if (of_find_compatible_node(NULL, NULL, "fsl,p1010-esdhc")) {
+		if (clock > 20000000)
+			clock -= 5000000;
+		if (clock > 40000000)
+			clock -= 5000000;
+	}
+
+	/* Set the clock */
+	esdhc_set_clock(host, clock);
+}
+
+#ifdef CONFIG_PM
+static u32 esdhc_proctl;
+static void esdhc_of_suspend(struct sdhci_host *host)
+{
+	esdhc_proctl = sdhci_be32bs_readl(host, SDHCI_HOST_CONTROL);
+}
+
+static void esdhc_of_resume(struct sdhci_host *host)
+{
+	esdhc_of_enable_dma(host);
+	sdhci_be32bs_writel(host, esdhc_proctl, SDHCI_HOST_CONTROL);
+}
+#endif
+
 static struct sdhci_ops sdhci_esdhc_ops = {
 	.read_l = sdhci_be32bs_readl,
 	.read_w = esdhc_readw,
@@ -89,10 +150,14 @@ static struct sdhci_ops sdhci_esdhc_ops = {
 	.write_l = sdhci_be32bs_writel,
 	.write_w = esdhc_writew,
 	.write_b = esdhc_writeb,
-	.set_clock = esdhc_set_clock,
+	.set_clock = esdhc_of_set_clock,
 	.enable_dma = esdhc_of_enable_dma,
 	.get_max_clock = esdhc_of_get_max_clock,
 	.get_min_clock = esdhc_of_get_min_clock,
+#ifdef CONFIG_PM
+	.platform_suspend = esdhc_of_suspend,
+	.platform_resume = esdhc_of_resume,
+#endif
 };
 
 static struct sdhci_pltfm_data sdhci_esdhc_pdata = {
@@ -131,17 +196,7 @@ static struct platform_driver sdhci_esdhc_driver = {
 	.remove = __devexit_p(sdhci_esdhc_remove),
 };
 
-static int __init sdhci_esdhc_init(void)
-{
-	return platform_driver_register(&sdhci_esdhc_driver);
-}
-module_init(sdhci_esdhc_init);
-
-static void __exit sdhci_esdhc_exit(void)
-{
-	platform_driver_unregister(&sdhci_esdhc_driver);
-}
-module_exit(sdhci_esdhc_exit);
+module_platform_driver(sdhci_esdhc_driver);
 
 MODULE_DESCRIPTION("SDHCI OF driver for Freescale MPC eSDHC");
 MODULE_AUTHOR("Xiaobo Xie <X.Xie@freescale.com>, "
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 3619adc7d9f..0ce088ae022 100644
--- a/drivers/mmc/host/sdhci-of-hlwd.c
+++ b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -93,17 +93,7 @@ static struct platform_driver sdhci_hlwd_driver = {
 	.remove = __devexit_p(sdhci_hlwd_remove),
 };
 
-static int __init sdhci_hlwd_init(void)
-{
-	return platform_driver_register(&sdhci_hlwd_driver);
-}
-module_init(sdhci_hlwd_init);
-
-static void __exit sdhci_hlwd_exit(void)
-{
-	platform_driver_unregister(&sdhci_hlwd_driver);
-}
-module_exit(sdhci_hlwd_exit);
+module_platform_driver(sdhci_hlwd_driver);
 
 MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
 MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
diff --git a/drivers/mmc/host/sdhci-pci-data.c b/drivers/mmc/host/sdhci-pci-data.c
new file mode 100644
index 00000000000..a611217769f
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pci-data.c
@@ -0,0 +1,5 @@
+#include <linux/module.h>
+#include <linux/mmc/sdhci-pci-data.h>
+
+struct sdhci_pci_data *(*sdhci_pci_get_data)(struct pci_dev *pdev, int slotno);
+EXPORT_SYMBOL_GPL(sdhci_pci_get_data);
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 6878a94626b..69ef0beae10 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -23,12 +23,18 @@
 #include <linux/scatterlist.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
-#include <linux/sfi.h>
 #include <linux/pm_runtime.h>
+#include <linux/mmc/sdhci-pci-data.h>
 
 #include "sdhci.h"
 
 /*
+ * PCI device IDs
+ */
+#define PCI_DEVICE_ID_INTEL_PCH_SDIO0	0x8809
+#define PCI_DEVICE_ID_INTEL_PCH_SDIO1	0x880a
+
+/*
  * PCI registers
  */
 
@@ -47,6 +53,7 @@ struct sdhci_pci_slot;
 
 struct sdhci_pci_fixes {
 	unsigned int		quirks;
+	unsigned int		quirks2;
 	bool			allow_runtime_pm;
 
 	int			(*probe) (struct sdhci_pci_chip *);
@@ -61,6 +68,7 @@ struct sdhci_pci_fixes {
 struct sdhci_pci_slot {
 	struct sdhci_pci_chip	*chip;
 	struct sdhci_host	*host;
+	struct sdhci_pci_data	*data;
 
 	int			pci_bar;
 	int			rst_n_gpio;
@@ -72,6 +80,7 @@ struct sdhci_pci_chip {
 	struct pci_dev		*pdev;
 
 	unsigned int		quirks;
+	unsigned int		quirks2;
 	bool			allow_runtime_pm;
 	const struct sdhci_pci_fixes *fixes;
 
@@ -171,32 +180,15 @@ static int mrst_hc_probe(struct sdhci_pci_chip *chip)
 	return 0;
 }
 
-/* Medfield eMMC hardware reset GPIOs */
-static int mfd_emmc0_rst_gpio = -EINVAL;
-static int mfd_emmc1_rst_gpio = -EINVAL;
-
-static int mfd_emmc_gpio_parse(struct sfi_table_header *table)
+static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
 {
-	struct sfi_table_simple *sb = (struct sfi_table_simple *)table;
-	struct sfi_gpio_table_entry *entry;
-	int i, num;
-
-	num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry);
-	entry = (struct sfi_gpio_table_entry *)sb->pentry;
-
-	for (i = 0; i < num; i++, entry++) {
-		if (!strncmp(entry->pin_name, "emmc0_rst", SFI_NAME_LEN))
-			mfd_emmc0_rst_gpio = entry->pin_no;
-		else if (!strncmp(entry->pin_name, "emmc1_rst", SFI_NAME_LEN))
-			mfd_emmc1_rst_gpio = entry->pin_no;
-	}
-
+	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
 	return 0;
 }
 
 #ifdef CONFIG_PM_RUNTIME
 
-static irqreturn_t mfd_sd_cd(int irq, void *dev_id)
+static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
 {
 	struct sdhci_pci_slot *slot = dev_id;
 	struct sdhci_host *host = slot->host;
@@ -205,15 +197,16 @@ static irqreturn_t mfd_sd_cd(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-#define MFLD_SD_CD_PIN 69
-
-static int mfd_sd_probe_slot(struct sdhci_pci_slot *slot)
+static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
 {
-	int err, irq, gpio = MFLD_SD_CD_PIN;
+	int err, irq, gpio = slot->cd_gpio;
 
 	slot->cd_gpio = -EINVAL;
 	slot->cd_irq = -EINVAL;
 
+	if (!gpio_is_valid(gpio))
+		return;
+
 	err = gpio_request(gpio, "sd_cd");
 	if (err < 0)
 		goto out;
@@ -226,72 +219,54 @@ static int mfd_sd_probe_slot(struct sdhci_pci_slot *slot)
 	if (irq < 0)
 		goto out_free;
 
-	err = request_irq(irq, mfd_sd_cd, IRQF_TRIGGER_RISING |
+	err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
 			  IRQF_TRIGGER_FALLING, "sd_cd", slot);
 	if (err)
 		goto out_free;
 
 	slot->cd_gpio = gpio;
 	slot->cd_irq = irq;
-	slot->host->quirks2 |= SDHCI_QUIRK2_OWN_CARD_DETECTION;
 
-	return 0;
+	return;
 
 out_free:
 	gpio_free(gpio);
 out:
 	dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
-	return 0;
 }
 
-static void mfd_sd_remove_slot(struct sdhci_pci_slot *slot, int dead)
+static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
 {
 	if (slot->cd_irq >= 0)
 		free_irq(slot->cd_irq, slot);
-	gpio_free(slot->cd_gpio);
+	if (gpio_is_valid(slot->cd_gpio))
+		gpio_free(slot->cd_gpio);
 }
 
 #else
 
-#define mfd_sd_probe_slot	NULL
-#define mfd_sd_remove_slot	NULL
+static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
+{
+}
+
+static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
+{
+}
 
 #endif
 
 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
-	const char *name = NULL;
-	int gpio = -EINVAL;
-
-	sfi_table_parse(SFI_SIG_GPIO, NULL, NULL, mfd_emmc_gpio_parse);
-
-	switch (slot->chip->pdev->device) {
-	case PCI_DEVICE_ID_INTEL_MFD_EMMC0:
-		gpio = mfd_emmc0_rst_gpio;
-		name = "eMMC0_reset";
-		break;
-	case PCI_DEVICE_ID_INTEL_MFD_EMMC1:
-		gpio = mfd_emmc1_rst_gpio;
-		name = "eMMC1_reset";
-		break;
-	}
-
-	if (!gpio_request(gpio, name)) {
-		gpio_direction_output(gpio, 1);
-		slot->rst_n_gpio = gpio;
-		slot->host->mmc->caps |= MMC_CAP_HW_RESET;
-	}
-
 	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
-
-	slot->host->mmc->caps2 = MMC_CAP2_BOOTPART_NOACC;
-
+	slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
+				  MMC_CAP2_HC_ERASE_SZ;
 	return 0;
 }
 
-static void mfd_emmc_remove_slot(struct sdhci_pci_slot *slot, int dead)
+static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
 {
-	gpio_free(slot->rst_n_gpio);
+	slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
+	return 0;
 }
 
 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
@@ -307,20 +282,24 @@ static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
 	.allow_runtime_pm = true,
-	.probe_slot	= mfd_sd_probe_slot,
-	.remove_slot	= mfd_sd_remove_slot,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+	.quirks2	= SDHCI_QUIRK2_HOST_OFF_CARD_ON,
 	.allow_runtime_pm = true,
+	.probe_slot	= mfd_sdio_probe_slot,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
 	.allow_runtime_pm = true,
 	.probe_slot	= mfd_emmc_probe_slot,
-	.remove_slot	= mfd_emmc_remove_slot,
+};
+
+static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
+	.quirks		= SDHCI_QUIRK_BROKEN_ADMA,
+	.probe_slot	= pch_hc_probe_slot,
 };
 
 /* O2Micro extra registers */
@@ -859,6 +838,22 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 	},
 
 	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_PCH_SDIO0,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_pch_sdio,
+	},
+
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_PCH_SDIO1,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_pch_sdio,
+	},
+
+	{
 		.vendor		= PCI_VENDOR_ID_O2,
 		.device		= PCI_DEVICE_ID_O2_8120,
 		.subvendor	= PCI_ANY_ID,
@@ -1012,11 +1007,8 @@ static int sdhci_pci_suspend(struct device *dev)
 
 		ret = sdhci_suspend_host(slot->host);
 
-		if (ret) {
-			for (i--; i >= 0; i--)
-				sdhci_resume_host(chip->slots[i]->host);
-			return ret;
-		}
+		if (ret)
+			goto err_pci_suspend;
 
 		slot_pm_flags = slot->host->mmc->pm_flags;
 		if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
@@ -1027,11 +1019,8 @@ static int sdhci_pci_suspend(struct device *dev)
 
 	if (chip->fixes && chip->fixes->suspend) {
 		ret = chip->fixes->suspend(chip);
-		if (ret) {
-			for (i = chip->num_slots - 1; i >= 0; i--)
-				sdhci_resume_host(chip->slots[i]->host);
-			return ret;
-		}
+		if (ret)
+			goto err_pci_suspend;
 	}
 
 	pci_save_state(pdev);
@@ -1048,6 +1037,11 @@ static int sdhci_pci_suspend(struct device *dev)
 	}
 
 	return 0;
+
+err_pci_suspend:
+	while (--i >= 0)
+		sdhci_resume_host(chip->slots[i]->host);
+	return ret;
 }
 
 static int sdhci_pci_resume(struct device *dev)
@@ -1113,23 +1107,22 @@ static int sdhci_pci_runtime_suspend(struct device *dev)
 
 		ret = sdhci_runtime_suspend_host(slot->host);
 
-		if (ret) {
-			for (i--; i >= 0; i--)
-				sdhci_runtime_resume_host(chip->slots[i]->host);
-			return ret;
-		}
+		if (ret)
+			goto err_pci_runtime_suspend;
 	}
 
 	if (chip->fixes && chip->fixes->suspend) {
 		ret = chip->fixes->suspend(chip);
-		if (ret) {
-			for (i = chip->num_slots - 1; i >= 0; i--)
-				sdhci_runtime_resume_host(chip->slots[i]->host);
-			return ret;
-		}
+		if (ret)
+			goto err_pci_runtime_suspend;
 	}
 
 	return 0;
+
+err_pci_runtime_suspend:
+	while (--i >= 0)
+		sdhci_runtime_resume_host(chip->slots[i]->host);
+	return ret;
 }
 
 static int sdhci_pci_runtime_resume(struct device *dev)
@@ -1190,11 +1183,12 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = {
 \*****************************************************************************/
 
 static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
-	struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
+	struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
+	int slotno)
 {
 	struct sdhci_pci_slot *slot;
 	struct sdhci_host *host;
-	int ret;
+	int ret, bar = first_bar + slotno;
 
 	if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
 		dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
@@ -1228,17 +1222,35 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 	slot->host = host;
 	slot->pci_bar = bar;
 	slot->rst_n_gpio = -EINVAL;
+	slot->cd_gpio = -EINVAL;
+
+	/* Retrieve platform data if there is any */
+	if (*sdhci_pci_get_data)
+		slot->data = sdhci_pci_get_data(pdev, slotno);
+
+	if (slot->data) {
+		if (slot->data->setup) {
+			ret = slot->data->setup(slot->data);
+			if (ret) {
+				dev_err(&pdev->dev, "platform setup failed\n");
+				goto free;
+			}
+		}
+		slot->rst_n_gpio = slot->data->rst_n_gpio;
+		slot->cd_gpio = slot->data->cd_gpio;
+	}
 
 	host->hw_name = "PCI";
 	host->ops = &sdhci_pci_ops;
 	host->quirks = chip->quirks;
+	host->quirks2 = chip->quirks2;
 
 	host->irq = pdev->irq;
 
 	ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
 	if (ret) {
 		dev_err(&pdev->dev, "cannot request region\n");
-		goto free;
+		goto cleanup;
 	}
 
 	host->ioaddr = pci_ioremap_bar(pdev, bar);
@@ -1254,15 +1266,30 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 			goto unmap;
 	}
 
+	if (gpio_is_valid(slot->rst_n_gpio)) {
+		if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
+			gpio_direction_output(slot->rst_n_gpio, 1);
+			slot->host->mmc->caps |= MMC_CAP_HW_RESET;
+		} else {
+			dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
+			slot->rst_n_gpio = -EINVAL;
+		}
+	}
+
 	host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
 
 	ret = sdhci_add_host(host);
 	if (ret)
 		goto remove;
 
+	sdhci_pci_add_own_cd(slot);
+
 	return slot;
 
 remove:
+	if (gpio_is_valid(slot->rst_n_gpio))
+		gpio_free(slot->rst_n_gpio);
+
 	if (chip->fixes && chip->fixes->remove_slot)
 		chip->fixes->remove_slot(slot, 0);
 
@@ -1272,6 +1299,10 @@ unmap:
 release:
 	pci_release_region(pdev, bar);
 
+cleanup:
+	if (slot->data && slot->data->cleanup)
+		slot->data->cleanup(slot->data);
+
 free:
 	sdhci_free_host(host);
 
@@ -1283,6 +1314,8 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
 	int dead;
 	u32 scratch;
 
+	sdhci_pci_remove_own_cd(slot);
+
 	dead = 0;
 	scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
 	if (scratch == (u32)-1)
@@ -1290,9 +1323,15 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
 
 	sdhci_remove_host(slot->host, dead);
 
+	if (gpio_is_valid(slot->rst_n_gpio))
+		gpio_free(slot->rst_n_gpio);
+
 	if (slot->chip->fixes && slot->chip->fixes->remove_slot)
 		slot->chip->fixes->remove_slot(slot, dead);
 
+	if (slot->data && slot->data->cleanup)
+		slot->data->cleanup(slot->data);
+
 	pci_release_region(slot->chip->pdev, slot->pci_bar);
 
 	sdhci_free_host(slot->host);
@@ -1364,6 +1403,7 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
 	chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
 	if (chip->fixes) {
 		chip->quirks = chip->fixes->quirks;
+		chip->quirks2 = chip->fixes->quirks2;
 		chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
 	}
 	chip->num_slots = slots;
@@ -1379,7 +1419,7 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
 	slots = chip->num_slots;	/* Quirk may have changed this */
 
 	for (i = 0; i < slots; i++) {
-		slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
+		slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
 		if (IS_ERR(slot)) {
 			for (i--; i >= 0; i--)
 				sdhci_pci_remove_slot(chip->slots[i]);
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 03970bcb349..c5c2a48bdd9 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -2,7 +2,7 @@
  * sdhci-pltfm.c Support for SDHCI platform devices
  * Copyright (c) 2009 Intel Corporation
  *
- * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc.
  * Copyright (c) 2009 MontaVista Software, Inc.
  *
  * Authors: Xiaobo Xie <X.Xie@freescale.com>
@@ -71,6 +71,14 @@ void sdhci_get_of_property(struct platform_device *pdev)
 		if (sdhci_of_wp_inverted(np))
 			host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
 
+		if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc"))
+			host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
+
+		if (of_device_is_compatible(np, "fsl,p2020-esdhc") ||
+		    of_device_is_compatible(np, "fsl,p1010-esdhc") ||
+		    of_device_is_compatible(np, "fsl,mpc8536-esdhc"))
+			host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+
 		clk = of_get_property(np, "clock-frequency", &size);
 		if (clk && size == sizeof(*clk) && *clk)
 			pltfm_host->clock = be32_to_cpup(clk);
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index 7a039c3cb1f..dbb75bfbcff 100644
--- a/drivers/mmc/host/sdhci-pxav2.c
+++ b/drivers/mmc/host/sdhci-pxav2.c
@@ -223,18 +223,8 @@ static struct platform_driver sdhci_pxav2_driver = {
 	.probe		= sdhci_pxav2_probe,
 	.remove		= __devexit_p(sdhci_pxav2_remove),
 };
-static int __init sdhci_pxav2_init(void)
-{
-	return platform_driver_register(&sdhci_pxav2_driver);
-}
-
-static void __exit sdhci_pxav2_exit(void)
-{
-	platform_driver_unregister(&sdhci_pxav2_driver);
-}
 
-module_init(sdhci_pxav2_init);
-module_exit(sdhci_pxav2_exit);
+module_platform_driver(sdhci_pxav2_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for pxav2");
 MODULE_AUTHOR("Marvell International Ltd.");
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 15673a7ee6a..f2969568355 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -269,18 +269,8 @@ static struct platform_driver sdhci_pxav3_driver = {
 	.probe		= sdhci_pxav3_probe,
 	.remove		= __devexit_p(sdhci_pxav3_remove),
 };
-static int __init sdhci_pxav3_init(void)
-{
-	return platform_driver_register(&sdhci_pxav3_driver);
-}
-
-static void __exit sdhci_pxav3_exit(void)
-{
-	platform_driver_unregister(&sdhci_pxav3_driver);
-}
 
-module_init(sdhci_pxav3_init);
-module_exit(sdhci_pxav3_exit);
+module_platform_driver(sdhci_pxav3_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for pxav3");
 MODULE_AUTHOR("Marvell International Ltd.");
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 9a20d1f55bb..55a164fcaa1 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -20,6 +20,10 @@
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/mmc/host.h>
 
@@ -53,6 +57,18 @@ struct sdhci_s3c {
 	struct clk		*clk_bus[MAX_BUS_CLK];
 };
 
+/**
+ * struct sdhci_s3c_driver_data - S3C SDHCI platform specific driver data
+ * @sdhci_quirks: sdhci host specific quirks.
+ *
+ * Specifies platform specific configuration of sdhci controller.
+ * Note: A structure for driver specific platform data is used for future
+ * expansion of its usage.
+ */
+struct sdhci_s3c_drv_data {
+	unsigned int	sdhci_quirks;
+};
+
 static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
 {
 	return sdhci_priv(host);
@@ -80,7 +96,7 @@ static void sdhci_s3c_check_sclk(struct sdhci_host *host)
 
 		tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
 		tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
-		writel(tmp, host->ioaddr + 0x80);
+		writel(tmp, host->ioaddr + S3C_SDHCI_CONTROL2);
 	}
 }
 
@@ -132,10 +148,10 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
 		return UINT_MAX;
 
 	/*
-	 * Clock divider's step is different as 1 from that of host controller
-	 * when 'clk_type' is S3C_SDHCI_CLK_DIV_EXTERNAL.
+	 * If controller uses a non-standard clock division, find the best clock
+	 * speed possible with selected clock source and skip the division.
 	 */
-	if (ourhost->pdata->clk_type) {
+	if (ourhost->host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
 		rate = clk_round_rate(clksrc, wanted);
 		return wanted - rate;
 	}
@@ -272,6 +288,8 @@ static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host)
 static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	struct sdhci_s3c *ourhost = to_s3c(host);
+	unsigned long timeout;
+	u16 clk = 0;
 
 	/* don't bother if the clock is going off */
 	if (clock == 0)
@@ -282,6 +300,25 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 	clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
 
 	host->clock = clock;
+
+	clk = SDHCI_CLOCK_INT_EN;
+	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+	/* Wait max 20 ms */
+	timeout = 20;
+	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
+		& SDHCI_CLOCK_INT_STABLE)) {
+		if (timeout == 0) {
+			printk(KERN_ERR "%s: Internal clock never "
+				"stabilised.\n", mmc_hostname(host->mmc));
+			return;
+		}
+		timeout--;
+		mdelay(1);
+	}
+
+	clk |= SDHCI_CLOCK_CARD_EN;
+	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 }
 
 /**
@@ -382,16 +419,24 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc)
 	}
 }
 
+static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data(
+			struct platform_device *pdev)
+{
+	return (struct sdhci_s3c_drv_data *)
+			platform_get_device_id(pdev)->driver_data;
+}
+
 static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 {
-	struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
+	struct s3c_sdhci_platdata *pdata;
+	struct sdhci_s3c_drv_data *drv_data;
 	struct device *dev = &pdev->dev;
 	struct sdhci_host *host;
 	struct sdhci_s3c *sc;
 	struct resource *res;
 	int ret, irq, ptr, clks;
 
-	if (!pdata) {
+	if (!pdev->dev.platform_data) {
 		dev_err(dev, "no device data specified\n");
 		return -ENOENT;
 	}
@@ -402,18 +447,20 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		return irq;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "no memory specified\n");
-		return -ENOENT;
-	}
-
 	host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
 	if (IS_ERR(host)) {
 		dev_err(dev, "sdhci_alloc_host() failed\n");
 		return PTR_ERR(host);
 	}
 
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		ret = -ENOMEM;
+		goto err_io_clk;
+	}
+	memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata));
+
+	drv_data = sdhci_s3c_get_driver_data(pdev);
 	sc = sdhci_priv(host);
 
 	sc->host = host;
@@ -464,15 +511,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		goto err_no_busclks;
 	}
 
-	sc->ioarea = request_mem_region(res->start, resource_size(res),
-					mmc_hostname(host->mmc));
-	if (!sc->ioarea) {
-		dev_err(dev, "failed to reserve register area\n");
-		ret = -ENXIO;
-		goto err_req_regs;
-	}
-
-	host->ioaddr = ioremap_nocache(res->start, resource_size(res));
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	host->ioaddr = devm_request_and_ioremap(&pdev->dev, res);
 	if (!host->ioaddr) {
 		dev_err(dev, "failed to map registers\n");
 		ret = -ENXIO;
@@ -491,6 +531,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	/* Setup quirks for the controller */
 	host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
 	host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
+	if (drv_data)
+		host->quirks |= drv_data->sdhci_quirks;
 
 #ifndef CONFIG_MMC_SDHCI_S3C_DMA
 
@@ -518,8 +560,16 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
 		host->mmc->caps = MMC_CAP_NONREMOVABLE;
 
-	if (pdata->host_caps)
-		host->mmc->caps |= pdata->host_caps;
+	switch (pdata->max_width) {
+	case 8:
+		host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+	case 4:
+		host->mmc->caps |= MMC_CAP_4_BIT_DATA;
+		break;
+	}
+
+	if (pdata->pm_caps)
+		host->mmc->pm_caps |= pdata->pm_caps;
 
 	host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
 			 SDHCI_QUIRK_32BIT_DMA_SIZE);
@@ -531,7 +581,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	 * If controller does not have internal clock divider,
 	 * we can use overriding functions instead of default.
 	 */
-	if (pdata->clk_type) {
+	if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
 		sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
 		sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
 		sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
@@ -541,10 +591,20 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	if (pdata->host_caps)
 		host->mmc->caps |= pdata->host_caps;
 
+	if (pdata->host_caps2)
+		host->mmc->caps2 |= pdata->host_caps2;
+
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_suspend_ignore_children(&pdev->dev, 1);
+
 	ret = sdhci_add_host(host);
 	if (ret) {
 		dev_err(dev, "sdhci_add_host() failed\n");
-		goto err_add_host;
+		pm_runtime_forbid(&pdev->dev);
+		pm_runtime_get_noresume(&pdev->dev);
+		goto err_req_regs;
 	}
 
 	/* The following two methods of card detection might call
@@ -558,10 +618,6 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
 	return 0;
 
- err_add_host:
-	release_resource(sc->ioarea);
-	kfree(sc->ioarea);
-
  err_req_regs:
 	for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
 		if (sc->clk_bus[ptr]) {
@@ -598,6 +654,8 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 
 	sdhci_remove_host(host, 1);
 
+	pm_runtime_disable(&pdev->dev);
+
 	for (ptr = 0; ptr < 3; ptr++) {
 		if (sc->clk_bus[ptr]) {
 			clk_disable(sc->clk_bus[ptr]);
@@ -607,18 +665,13 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 	clk_disable(sc->clk_io);
 	clk_put(sc->clk_io);
 
-	iounmap(host->ioaddr);
-	release_resource(sc->ioarea);
-	kfree(sc->ioarea);
-
 	sdhci_free_host(host);
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
 
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
 static int sdhci_s3c_suspend(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
@@ -632,10 +685,29 @@ static int sdhci_s3c_resume(struct device *dev)
 
 	return sdhci_resume_host(host);
 }
+#endif
 
+#ifdef CONFIG_PM_RUNTIME
+static int sdhci_s3c_runtime_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+
+	return sdhci_runtime_suspend_host(host);
+}
+
+static int sdhci_s3c_runtime_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+
+	return sdhci_runtime_resume_host(host);
+}
+#endif
+
+#ifdef CONFIG_PM
 static const struct dev_pm_ops sdhci_s3c_pmops = {
-	.suspend	= sdhci_s3c_suspend,
-	.resume		= sdhci_s3c_resume,
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_s3c_suspend, sdhci_s3c_resume)
+	SET_RUNTIME_PM_OPS(sdhci_s3c_runtime_suspend, sdhci_s3c_runtime_resume,
+			   NULL)
 };
 
 #define SDHCI_S3C_PMOPS (&sdhci_s3c_pmops)
@@ -644,9 +716,31 @@ static const struct dev_pm_ops sdhci_s3c_pmops = {
 #define SDHCI_S3C_PMOPS NULL
 #endif
 
+#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212)
+static struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = {
+	.sdhci_quirks = SDHCI_QUIRK_NONSTANDARD_CLOCK,
+};
+#define EXYNOS4_SDHCI_DRV_DATA ((kernel_ulong_t)&exynos4_sdhci_drv_data)
+#else
+#define EXYNOS4_SDHCI_DRV_DATA ((kernel_ulong_t)NULL)
+#endif
+
+static struct platform_device_id sdhci_s3c_driver_ids[] = {
+	{
+		.name		= "s3c-sdhci",
+		.driver_data	= (kernel_ulong_t)NULL,
+	}, {
+		.name		= "exynos4-sdhci",
+		.driver_data	= EXYNOS4_SDHCI_DRV_DATA,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, sdhci_s3c_driver_ids);
+
 static struct platform_driver sdhci_s3c_driver = {
 	.probe		= sdhci_s3c_probe,
 	.remove		= __devexit_p(sdhci_s3c_remove),
+	.id_table	= sdhci_s3c_driver_ids,
 	.driver		= {
 		.owner	= THIS_MODULE,
 		.name	= "s3c-sdhci",
@@ -654,18 +748,7 @@ static struct platform_driver sdhci_s3c_driver = {
 	},
 };
 
-static int __init sdhci_s3c_init(void)
-{
-	return platform_driver_register(&sdhci_s3c_driver);
-}
-
-static void __exit sdhci_s3c_exit(void)
-{
-	platform_driver_unregister(&sdhci_s3c_driver);
-}
-
-module_init(sdhci_s3c_init);
-module_exit(sdhci_s3c_exit);
+module_platform_driver(sdhci_s3c_driver);
 
 MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 63cc8b6a1c9..6dfa82e03c7 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/pm.h>
 #include <linux/slab.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdhci-spear.h>
@@ -271,26 +272,49 @@ static int __devexit sdhci_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int sdhci_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct spear_sdhci *sdhci = dev_get_platdata(dev);
+	int ret;
+
+	ret = sdhci_suspend_host(host);
+	if (!ret)
+		clk_disable(sdhci->clk);
+
+	return ret;
+}
+
+static int sdhci_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct spear_sdhci *sdhci = dev_get_platdata(dev);
+	int ret;
+
+	ret = clk_enable(sdhci->clk);
+	if (ret) {
+		dev_dbg(dev, "Resume: Error enabling clock\n");
+		return ret;
+	}
+
+	return sdhci_resume_host(host);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_pm_ops, sdhci_suspend, sdhci_resume);
+
 static struct platform_driver sdhci_driver = {
 	.driver = {
 		.name	= "sdhci",
 		.owner	= THIS_MODULE,
+		.pm	= &sdhci_pm_ops,
 	},
 	.probe		= sdhci_probe,
 	.remove		= __devexit_p(sdhci_remove),
 };
 
-static int __init sdhci_init(void)
-{
-	return platform_driver_register(&sdhci_driver);
-}
-module_init(sdhci_init);
-
-static void __exit sdhci_exit(void)
-{
-	platform_driver_unregister(&sdhci_driver);
-}
-module_exit(sdhci_exit);
+module_platform_driver(sdhci_driver);
 
 MODULE_DESCRIPTION("SPEAr Secure Digital Host Controller Interface driver");
 MODULE_AUTHOR("Viresh Kumar <viresh.kumar@st.com>");
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index e2e18d3f949..53b26502f6e 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -19,11 +19,11 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/of_gpio.h>
 #include <linux/gpio.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
-#include <linux/module.h>
 
 #include <asm/gpio.h>
 
@@ -32,6 +32,19 @@
 
 #include "sdhci-pltfm.h"
 
+#define NVQUIRK_FORCE_SDHCI_SPEC_200	BIT(0)
+#define NVQUIRK_ENABLE_BLOCK_GAP_DET	BIT(1)
+
+struct sdhci_tegra_soc_data {
+	struct sdhci_pltfm_data *pdata;
+	u32 nvquirks;
+};
+
+struct sdhci_tegra {
+	const struct tegra_sdhci_platform_data *plat;
+	const struct sdhci_tegra_soc_data *soc_data;
+};
+
 static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
 {
 	u32 val;
@@ -47,7 +60,12 @@ static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
 
 static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
 {
-	if (unlikely(reg == SDHCI_HOST_VERSION)) {
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
+	const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+
+	if (unlikely((soc_data->nvquirks & NVQUIRK_FORCE_SDHCI_SPEC_200) &&
+			(reg == SDHCI_HOST_VERSION))) {
 		/* Erratum: Version register is invalid in HW. */
 		return SDHCI_SPEC_200;
 	}
@@ -57,6 +75,10 @@ static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
 
 static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 {
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
+	const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+
 	/* Seems like we're getting spurious timeout and crc errors, so
 	 * disable signalling of them. In case of real errors software
 	 * timers should take care of eventually detecting them.
@@ -66,7 +88,8 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 
 	writel(val, host->ioaddr + reg);
 
-	if (unlikely(reg == SDHCI_INT_ENABLE)) {
+	if (unlikely((soc_data->nvquirks & NVQUIRK_ENABLE_BLOCK_GAP_DET) &&
+			(reg == SDHCI_INT_ENABLE))) {
 		/* Erratum: Must enable block gap interrupt detection */
 		u8 gap_ctrl = readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL);
 		if (val & SDHCI_INT_CARD_INT)
@@ -77,10 +100,11 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 	}
 }
 
-static unsigned int tegra_sdhci_get_ro(struct sdhci_host *sdhci)
+static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host)
 {
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(sdhci);
-	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
+	const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
 
 	if (!gpio_is_valid(plat->wp_gpio))
 		return -1;
@@ -99,7 +123,8 @@ static irqreturn_t carddetect_irq(int irq, void *data)
 static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
+	const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
 	u32 ctrl;
 
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
@@ -125,16 +150,44 @@ static struct sdhci_ops tegra_sdhci_ops = {
 	.platform_8bit_width = tegra_sdhci_8bit,
 };
 
-static struct sdhci_pltfm_data sdhci_tegra_pdata = {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+static struct sdhci_pltfm_data sdhci_tegra20_pdata = {
+	.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
+		  SDHCI_QUIRK_NO_HISPD_BIT |
+		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+	.ops  = &tegra_sdhci_ops,
+};
+
+static struct sdhci_tegra_soc_data soc_data_tegra20 = {
+	.pdata = &sdhci_tegra20_pdata,
+	.nvquirks = NVQUIRK_FORCE_SDHCI_SPEC_200 |
+		    NVQUIRK_ENABLE_BLOCK_GAP_DET,
+};
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+static struct sdhci_pltfm_data sdhci_tegra30_pdata = {
 	.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
 		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
 		  SDHCI_QUIRK_NO_HISPD_BIT |
 		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
 	.ops  = &tegra_sdhci_ops,
 };
 
+static struct sdhci_tegra_soc_data soc_data_tegra30 = {
+	.pdata = &sdhci_tegra30_pdata,
+};
+#endif
+
 static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = {
-	{ .compatible = "nvidia,tegra20-sdhci", },
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+	{ .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+	{ .compatible = "nvidia,tegra20-sdhci", .data = &soc_data_tegra20 },
+#endif
 	{}
 };
 MODULE_DEVICE_TABLE(of, sdhci_dt_ids);
@@ -165,13 +218,22 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
 
 static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
 {
+	const struct of_device_id *match;
+	const struct sdhci_tegra_soc_data *soc_data;
+	struct sdhci_host *host;
 	struct sdhci_pltfm_host *pltfm_host;
 	struct tegra_sdhci_platform_data *plat;
-	struct sdhci_host *host;
+	struct sdhci_tegra *tegra_host;
 	struct clk *clk;
 	int rc;
 
-	host = sdhci_pltfm_init(pdev, &sdhci_tegra_pdata);
+	match = of_match_device(sdhci_tegra_dt_match, &pdev->dev);
+	if (match)
+		soc_data = match->data;
+	else
+		soc_data = &soc_data_tegra20;
+
+	host = sdhci_pltfm_init(pdev, soc_data->pdata);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 
@@ -188,7 +250,17 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
 		goto err_no_plat;
 	}
 
-	pltfm_host->priv = plat;
+	tegra_host = devm_kzalloc(&pdev->dev, sizeof(*tegra_host), GFP_KERNEL);
+	if (!tegra_host) {
+		dev_err(mmc_dev(host->mmc), "failed to allocate tegra_host\n");
+		rc = -ENOMEM;
+		goto err_no_plat;
+	}
+
+	tegra_host->plat = plat;
+	tegra_host->soc_data = soc_data;
+
+	pltfm_host->priv = tegra_host;
 
 	if (gpio_is_valid(plat->power_gpio)) {
 		rc = gpio_request(plat->power_gpio, "sdhci_power");
@@ -284,7 +356,8 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
+	const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
 	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
 
 	sdhci_remove_host(host, dead);
@@ -324,18 +397,8 @@ static struct platform_driver sdhci_tegra_driver = {
 	.remove		= __devexit_p(sdhci_tegra_remove),
 };
 
-static int __init sdhci_tegra_init(void)
-{
-	return platform_driver_register(&sdhci_tegra_driver);
-}
-module_init(sdhci_tegra_init);
-
-static void __exit sdhci_tegra_exit(void)
-{
-	platform_driver_unregister(&sdhci_tegra_driver);
-}
-module_exit(sdhci_tegra_exit);
+module_platform_driver(sdhci_tegra_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Tegra");
-MODULE_AUTHOR(" Google, Inc.");
+MODULE_AUTHOR("Google, Inc.");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 19ed580f2ca..9aa77f3f04a 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -49,7 +49,7 @@ static void sdhci_finish_data(struct sdhci_host *);
 
 static void sdhci_send_command(struct sdhci_host *, struct mmc_command *);
 static void sdhci_finish_command(struct sdhci_host *);
-static int sdhci_execute_tuning(struct mmc_host *mmc);
+static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
 static void sdhci_tuning_timer(unsigned long data);
 
 #ifdef CONFIG_PM_RUNTIME
@@ -146,10 +146,8 @@ static void sdhci_set_card_detection(struct sdhci_host *host, bool enable)
 {
 	u32 present, irqs;
 
-	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
-		return;
-
-	if (host->quirks2 & SDHCI_QUIRK2_OWN_CARD_DETECTION)
+	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) ||
+	    !mmc_card_is_removable(host->mmc))
 		return;
 
 	present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
@@ -214,6 +212,11 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 
 	if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
 		sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier);
+
+	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
+		if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL))
+			host->ops->enable_dma(host);
+	}
 }
 
 static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
@@ -423,12 +426,12 @@ static void sdhci_transfer_pio(struct sdhci_host *host)
 static char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags)
 {
 	local_irq_save(*flags);
-	return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+	return kmap_atomic(sg_page(sg)) + sg->offset;
 }
 
 static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags)
 {
-	kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
+	kunmap_atomic(buffer);
 	local_irq_restore(*flags);
 }
 
@@ -1016,7 +1019,8 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 		flags |= SDHCI_CMD_INDEX;
 
 	/* CMD19 is special in that the Data Present Select should be set */
-	if (cmd->data || (cmd->opcode == MMC_SEND_TUNING_BLOCK))
+	if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK ||
+	    cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200)
 		flags |= SDHCI_CMD_DATA;
 
 	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
@@ -1066,12 +1070,15 @@ static void sdhci_finish_command(struct sdhci_host *host)
 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	int div = 0; /* Initialized for compiler warning */
+	int real_div = div, clk_mul = 1;
 	u16 clk = 0;
 	unsigned long timeout;
 
-	if (clock == host->clock)
+	if (clock && clock == host->clock)
 		return;
 
+	host->mmc->actual_clock = 0;
+
 	if (host->ops->set_clock) {
 		host->ops->set_clock(host, clock);
 		if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
@@ -1109,6 +1116,8 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 				 * Control register.
 				 */
 				clk = SDHCI_PROG_CLOCK_MODE;
+				real_div = div;
+				clk_mul = host->clk_mul;
 				div--;
 			}
 		} else {
@@ -1122,6 +1131,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 						break;
 				}
 			}
+			real_div = div;
 			div >>= 1;
 		}
 	} else {
@@ -1130,9 +1140,13 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 			if ((host->max_clk / div) <= clock)
 				break;
 		}
+		real_div = div;
 		div >>= 1;
 	}
 
+	if (real_div)
+		host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
+
 	clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
 	clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
 		<< SDHCI_DIVIDER_HI_SHIFT;
@@ -1160,7 +1174,7 @@ out:
 	host->clock = clock;
 }
 
-static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
+static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
 {
 	u8 pwr = 0;
 
@@ -1183,13 +1197,13 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 	}
 
 	if (host->pwr == pwr)
-		return;
+		return -1;
 
 	host->pwr = pwr;
 
 	if (pwr == 0) {
 		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
-		return;
+		return 0;
 	}
 
 	/*
@@ -1216,6 +1230,8 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 	 */
 	if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
 		mdelay(10);
+
+	return power;
 }
 
 /*****************************************************************************\
@@ -1277,7 +1293,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		if ((host->flags & SDHCI_NEEDS_RETUNING) &&
 		    !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) {
 			spin_unlock_irqrestore(&host->lock, flags);
-			sdhci_execute_tuning(mmc);
+			sdhci_execute_tuning(mmc, mrq->cmd->opcode);
 			spin_lock_irqsave(&host->lock, flags);
 
 			/* Restore original mmc_request structure */
@@ -1297,12 +1313,17 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 {
 	unsigned long flags;
+	int vdd_bit = -1;
 	u8 ctrl;
 
 	spin_lock_irqsave(&host->lock, flags);
 
-	if (host->flags & SDHCI_DEVICE_DEAD)
-		goto out;
+	if (host->flags & SDHCI_DEVICE_DEAD) {
+		spin_unlock_irqrestore(&host->lock, flags);
+		if (host->vmmc && ios->power_mode == MMC_POWER_OFF)
+			mmc_regulator_set_ocr(host->mmc, host->vmmc, 0);
+		return;
+	}
 
 	/*
 	 * Reset the chip on each power off.
@@ -1316,9 +1337,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 	sdhci_set_clock(host, ios->clock);
 
 	if (ios->power_mode == MMC_POWER_OFF)
-		sdhci_set_power(host, -1);
+		vdd_bit = sdhci_set_power(host, -1);
 	else
-		sdhci_set_power(host, ios->vdd);
+		vdd_bit = sdhci_set_power(host, ios->vdd);
+
+	if (host->vmmc && vdd_bit != -1) {
+		spin_unlock_irqrestore(&host->lock, flags);
+		mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit);
+		spin_lock_irqsave(&host->lock, flags);
+	}
 
 	if (host->ops->platform_send_init_74_clocks)
 		host->ops->platform_send_init_74_clocks(host, ios->power_mode);
@@ -1361,11 +1388,11 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 		unsigned int clock;
 
 		/* In case of UHS-I modes, set High Speed Enable */
-		if ((ios->timing == MMC_TIMING_UHS_SDR50) ||
+		if ((ios->timing == MMC_TIMING_MMC_HS200) ||
+		    (ios->timing == MMC_TIMING_UHS_SDR50) ||
 		    (ios->timing == MMC_TIMING_UHS_SDR104) ||
 		    (ios->timing == MMC_TIMING_UHS_DDR50) ||
-		    (ios->timing == MMC_TIMING_UHS_SDR25) ||
-		    (ios->timing == MMC_TIMING_UHS_SDR12))
+		    (ios->timing == MMC_TIMING_UHS_SDR25))
 			ctrl |= SDHCI_CTRL_HISPD;
 
 		ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
@@ -1415,7 +1442,9 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 			ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 			/* Select Bus Speed Mode for host */
 			ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
-			if (ios->timing == MMC_TIMING_UHS_SDR12)
+			if (ios->timing == MMC_TIMING_MMC_HS200)
+				ctrl_2 |= SDHCI_CTRL_HS_SDR200;
+			else if (ios->timing == MMC_TIMING_UHS_SDR12)
 				ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
 			else if (ios->timing == MMC_TIMING_UHS_SDR25)
 				ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
@@ -1443,7 +1472,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 	if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
 		sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
 
-out:
 	mmiowb();
 	spin_unlock_irqrestore(&host->lock, flags);
 }
@@ -1663,7 +1691,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
 	return err;
 }
 
-static int sdhci_execute_tuning(struct mmc_host *mmc)
+static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
 {
 	struct sdhci_host *host;
 	u16 ctrl;
@@ -1671,6 +1699,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 	int tuning_loop_counter = MAX_TUNING_LOOP;
 	unsigned long timeout;
 	int err = 0;
+	bool requires_tuning_nonuhs = false;
 
 	host = mmc_priv(mmc);
 
@@ -1681,13 +1710,19 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 
 	/*
-	 * Host Controller needs tuning only in case of SDR104 mode
-	 * and for SDR50 mode when Use Tuning for SDR50 is set in
+	 * The Host Controller needs tuning only in case of SDR104 mode
+	 * and for SDR50 mode when Use Tuning for SDR50 is set in the
 	 * Capabilities register.
+	 * If the Host Controller supports the HS200 mode then the
+	 * tuning function has to be executed.
 	 */
+	if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) &&
+	    (host->flags & SDHCI_SDR50_NEEDS_TUNING ||
+	     host->flags & SDHCI_HS200_NEEDS_TUNING))
+		requires_tuning_nonuhs = true;
+
 	if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) ||
-	    (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) &&
-	    (host->flags & SDHCI_SDR50_NEEDS_TUNING)))
+	    requires_tuning_nonuhs)
 		ctrl |= SDHCI_CTRL_EXEC_TUNING;
 	else {
 		spin_unlock(&host->lock);
@@ -1723,7 +1758,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 		if (!tuning_loop_counter && !timeout)
 			break;
 
-		cmd.opcode = MMC_SEND_TUNING_BLOCK;
+		cmd.opcode = opcode;
 		cmd.arg = 0;
 		cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 		cmd.retries = 0;
@@ -1738,7 +1773,17 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 		 * block to the Host Controller. So we set the block size
 		 * to 64 here.
 		 */
-		sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE);
+		if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) {
+			if (mmc->ios.bus_width == MMC_BUS_WIDTH_8)
+				sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128),
+					     SDHCI_BLOCK_SIZE);
+			else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4)
+				sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64),
+					     SDHCI_BLOCK_SIZE);
+		} else {
+			sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64),
+				     SDHCI_BLOCK_SIZE);
+		}
 
 		/*
 		 * The tuning block is sent by the card to the host controller.
@@ -2121,12 +2166,14 @@ static void sdhci_show_adma_error(struct sdhci_host *host) { }
 
 static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 {
+	u32 command;
 	BUG_ON(intmask == 0);
 
 	/* CMD19 generates _only_ Buffer Read Ready interrupt */
 	if (intmask & SDHCI_INT_DATA_AVAIL) {
-		if (SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) ==
-		    MMC_SEND_TUNING_BLOCK) {
+		command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND));
+		if (command == MMC_SEND_TUNING_BLOCK ||
+		    command == MMC_SEND_TUNING_BLOCK_HS200) {
 			host->tuning_done = 1;
 			wake_up(&host->buf_ready_int);
 			return;
@@ -2220,8 +2267,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 {
 	irqreturn_t result;
 	struct sdhci_host *host = dev_id;
-	u32 intmask;
-	int cardint = 0;
+	u32 intmask, unexpected = 0;
+	int cardint = 0, max_loops = 16;
 
 	spin_lock(&host->lock);
 
@@ -2239,6 +2286,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 		goto out;
 	}
 
+again:
 	DBG("*** %s got interrupt: 0x%08x\n",
 		mmc_hostname(host->mmc), intmask);
 
@@ -2297,19 +2345,23 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 	intmask &= ~SDHCI_INT_CARD_INT;
 
 	if (intmask) {
-		pr_err("%s: Unexpected interrupt 0x%08x.\n",
-			mmc_hostname(host->mmc), intmask);
-		sdhci_dumpregs(host);
-
+		unexpected |= intmask;
 		sdhci_writel(host, intmask, SDHCI_INT_STATUS);
 	}
 
 	result = IRQ_HANDLED;
 
-	mmiowb();
+	intmask = sdhci_readl(host, SDHCI_INT_STATUS);
+	if (intmask && --max_loops)
+		goto again;
 out:
 	spin_unlock(&host->lock);
 
+	if (unexpected) {
+		pr_err("%s: Unexpected interrupt 0x%08x.\n",
+			   mmc_hostname(host->mmc), unexpected);
+		sdhci_dumpregs(host);
+	}
 	/*
 	 * We have to delay this as it calls back into the driver.
 	 */
@@ -2330,26 +2382,36 @@ out:
 int sdhci_suspend_host(struct sdhci_host *host)
 {
 	int ret;
+	bool has_tuning_timer;
+
+	if (host->ops->platform_suspend)
+		host->ops->platform_suspend(host);
 
 	sdhci_disable_card_detection(host);
 
 	/* Disable tuning since we are suspending */
-	if (host->version >= SDHCI_SPEC_300 && host->tuning_count &&
-	    host->tuning_mode == SDHCI_TUNING_MODE_1) {
+	has_tuning_timer = host->version >= SDHCI_SPEC_300 &&
+		host->tuning_count && host->tuning_mode == SDHCI_TUNING_MODE_1;
+	if (has_tuning_timer) {
+		del_timer_sync(&host->tuning_timer);
 		host->flags &= ~SDHCI_NEEDS_RETUNING;
-		mod_timer(&host->tuning_timer, jiffies +
-			host->tuning_count * HZ);
 	}
 
 	ret = mmc_suspend_host(host->mmc);
-	if (ret)
+	if (ret) {
+		if (has_tuning_timer) {
+			host->flags |= SDHCI_NEEDS_RETUNING;
+			mod_timer(&host->tuning_timer, jiffies +
+					host->tuning_count * HZ);
+		}
+
+		sdhci_enable_card_detection(host);
+
 		return ret;
+	}
 
 	free_irq(host->irq, host);
 
-	if (host->vmmc)
-		ret = regulator_disable(host->vmmc);
-
 	return ret;
 }
 
@@ -2359,12 +2421,6 @@ int sdhci_resume_host(struct sdhci_host *host)
 {
 	int ret;
 
-	if (host->vmmc) {
-		int ret = regulator_enable(host->vmmc);
-		if (ret)
-			return ret;
-	}
-
 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
 		if (host->ops->enable_dma)
 			host->ops->enable_dma(host);
@@ -2375,12 +2431,24 @@ int sdhci_resume_host(struct sdhci_host *host)
 	if (ret)
 		return ret;
 
-	sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER));
-	mmiowb();
+	if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) &&
+	    (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) {
+		/* Card keeps power but host controller does not */
+		sdhci_init(host, 0);
+		host->pwr = 0;
+		host->clock = 0;
+		sdhci_do_set_ios(host, &host->mmc->ios);
+	} else {
+		sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER));
+		mmiowb();
+	}
 
 	ret = mmc_resume_host(host->mmc);
 	sdhci_enable_card_detection(host);
 
+	if (host->ops->platform_resume)
+		host->ops->platform_resume(host);
+
 	/* Set the re-tuning expiration flag */
 	if ((host->version >= SDHCI_SPEC_300) && host->tuning_count &&
 	    (host->tuning_mode == SDHCI_TUNING_MODE_1))
@@ -2714,8 +2782,9 @@ int sdhci_add_host(struct sdhci_host *host)
 	    mmc_card_is_removable(mmc))
 		mmc->caps |= MMC_CAP_NEEDS_POLL;
 
-	/* UHS-I mode(s) supported by the host controller. */
-	if (host->version >= SDHCI_SPEC_300)
+	/* Any UHS-I mode in caps implies SDR12 and SDR25 support. */
+	if (caps[1] & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
+		       SDHCI_SUPPORT_DDR50))
 		mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
 
 	/* SDR104 supports also implies SDR50 support */
@@ -2727,10 +2796,14 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (caps[1] & SDHCI_SUPPORT_DDR50)
 		mmc->caps |= MMC_CAP_UHS_DDR50;
 
-	/* Does the host needs tuning for SDR50? */
+	/* Does the host need tuning for SDR50? */
 	if (caps[1] & SDHCI_USE_SDR50_TUNING)
 		host->flags |= SDHCI_SDR50_NEEDS_TUNING;
 
+	/* Does the host need tuning for HS200? */
+	if (mmc->caps2 & MMC_CAP2_HS200)
+		host->flags |= SDHCI_HS200_NEEDS_TUNING;
+
 	/* Driver Type(s) (A, C, D) supported by the host */
 	if (caps[1] & SDHCI_DRIVER_TYPE_A)
 		mmc->caps |= MMC_CAP_DRIVER_TYPE_A;
@@ -2926,8 +2999,6 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (IS_ERR(host->vmmc)) {
 		pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
 		host->vmmc = NULL;
-	} else {
-		regulator_enable(host->vmmc);
 	}
 
 	sdhci_init(host, 0);
@@ -3016,10 +3087,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 	tasklet_kill(&host->card_tasklet);
 	tasklet_kill(&host->finish_tasklet);
 
-	if (host->vmmc) {
-		regulator_disable(host->vmmc);
+	if (host->vmmc)
 		regulator_put(host->vmmc);
-	}
 
 	kfree(host->adma_desc);
 	kfree(host->align_buffer);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index a04d4d0c6fd..f761f23d2a2 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -158,6 +158,7 @@
 #define   SDHCI_CTRL_UHS_SDR50		0x0002
 #define   SDHCI_CTRL_UHS_SDR104		0x0003
 #define   SDHCI_CTRL_UHS_DDR50		0x0004
+#define   SDHCI_CTRL_HS_SDR200		0x0005 /* reserved value in SDIO spec */
 #define  SDHCI_CTRL_VDD_180		0x0008
 #define  SDHCI_CTRL_DRV_TYPE_MASK	0x0030
 #define   SDHCI_CTRL_DRV_TYPE_B		0x0000
@@ -274,6 +275,8 @@ struct sdhci_ops {
 	void	(*platform_reset_exit)(struct sdhci_host *host, u8 mask);
 	int	(*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
 	void	(*hw_reset)(struct sdhci_host *host);
+	void	(*platform_suspend)(struct sdhci_host *host);
+	void	(*platform_resume)(struct sdhci_host *host);
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index d5505f3fe2a..724b35e85a2 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -16,6 +16,33 @@
  *
  */
 
+/*
+ * The MMCIF driver is now processing MMC requests asynchronously, according
+ * to the Linux MMC API requirement.
+ *
+ * The MMCIF driver processes MMC requests in up to 3 stages: command, optional
+ * data, and optional stop. To achieve asynchronous processing each of these
+ * stages is split into two halves: a top and a bottom half. The top half
+ * initialises the hardware, installs a timeout handler to handle completion
+ * timeouts, and returns. In case of the command stage this immediately returns
+ * control to the caller, leaving all further processing to run asynchronously.
+ * All further request processing is performed by the bottom halves.
+ *
+ * The bottom half further consists of a "hard" IRQ handler, an IRQ handler
+ * thread, a DMA completion callback, if DMA is used, a timeout work, and
+ * request- and stage-specific handler methods.
+ *
+ * Each bottom half run begins with either a hardware interrupt, a DMA callback
+ * invocation, or a timeout work run. In case of an error or a successful
+ * processing completion, the MMC core is informed and the request processing is
+ * finished. In case processing has to continue, i.e., if data has to be read
+ * from or written to the card, or if a stop command has to be sent, the next
+ * top half is called, which performs the necessary hardware handling and
+ * reschedules the timeout work. This returns the driver state machine into the
+ * bottom half waiting state.
+ */
+
+#include <linux/bitops.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
@@ -29,6 +56,7 @@
 #include <linux/mmc/sh_mmcif.h>
 #include <linux/pagemap.h>
 #include <linux/platform_device.h>
+#include <linux/pm_qos.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 #include <linux/module.h>
@@ -123,6 +151,11 @@
 #define MASK_MRBSYTO		(1 << 1)
 #define MASK_MRSPTO		(1 << 0)
 
+#define MASK_START_CMD		(MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR | \
+				 MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR | \
+				 MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \
+				 MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO)
+
 /* CE_HOST_STS1 */
 #define STS1_CMDSEQ		(1 << 31)
 
@@ -162,9 +195,21 @@ enum mmcif_state {
 	STATE_IOS,
 };
 
+enum mmcif_wait_for {
+	MMCIF_WAIT_FOR_REQUEST,
+	MMCIF_WAIT_FOR_CMD,
+	MMCIF_WAIT_FOR_MREAD,
+	MMCIF_WAIT_FOR_MWRITE,
+	MMCIF_WAIT_FOR_READ,
+	MMCIF_WAIT_FOR_WRITE,
+	MMCIF_WAIT_FOR_READ_END,
+	MMCIF_WAIT_FOR_WRITE_END,
+	MMCIF_WAIT_FOR_STOP,
+};
+
 struct sh_mmcif_host {
 	struct mmc_host *mmc;
-	struct mmc_data *data;
+	struct mmc_request *mrq;
 	struct platform_device *pd;
 	struct sh_dmae_slave dma_slave_tx;
 	struct sh_dmae_slave dma_slave_rx;
@@ -172,11 +217,17 @@ struct sh_mmcif_host {
 	unsigned int clk;
 	int bus_width;
 	bool sd_error;
+	bool dying;
 	long timeout;
 	void __iomem *addr;
-	struct completion intr_wait;
+	u32 *pio_ptr;
+	spinlock_t lock;		/* protect sh_mmcif_host::state */
 	enum mmcif_state state;
-	spinlock_t lock;
+	enum mmcif_wait_for wait_for;
+	struct delayed_work timeout_work;
+	size_t blocksize;
+	int sg_idx;
+	int sg_blkidx;
 	bool power;
 	bool card_present;
 
@@ -202,19 +253,21 @@ static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host,
 static void mmcif_dma_complete(void *arg)
 {
 	struct sh_mmcif_host *host = arg;
+	struct mmc_data *data = host->mrq->data;
+
 	dev_dbg(&host->pd->dev, "Command completed\n");
 
-	if (WARN(!host->data, "%s: NULL data in DMA completion!\n",
+	if (WARN(!data, "%s: NULL data in DMA completion!\n",
 		 dev_name(&host->pd->dev)))
 		return;
 
-	if (host->data->flags & MMC_DATA_READ)
+	if (data->flags & MMC_DATA_READ)
 		dma_unmap_sg(host->chan_rx->device->dev,
-			     host->data->sg, host->data->sg_len,
+			     data->sg, data->sg_len,
 			     DMA_FROM_DEVICE);
 	else
 		dma_unmap_sg(host->chan_tx->device->dev,
-			     host->data->sg, host->data->sg_len,
+			     data->sg, data->sg_len,
 			     DMA_TO_DEVICE);
 
 	complete(&host->dma_complete);
@@ -222,18 +275,19 @@ static void mmcif_dma_complete(void *arg)
 
 static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
 {
-	struct scatterlist *sg = host->data->sg;
+	struct mmc_data *data = host->mrq->data;
+	struct scatterlist *sg = data->sg;
 	struct dma_async_tx_descriptor *desc = NULL;
 	struct dma_chan *chan = host->chan_rx;
 	dma_cookie_t cookie = -EINVAL;
 	int ret;
 
-	ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
+	ret = dma_map_sg(chan->device->dev, sg, data->sg_len,
 			 DMA_FROM_DEVICE);
 	if (ret > 0) {
 		host->dma_active = true;
-		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+		desc = dmaengine_prep_slave_sg(chan, sg, ret,
+			DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	}
 
 	if (desc) {
@@ -244,7 +298,7 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
 		dma_async_issue_pending(chan);
 	}
 	dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
-		__func__, host->data->sg_len, ret, cookie);
+		__func__, data->sg_len, ret, cookie);
 
 	if (!desc) {
 		/* DMA failed, fall back to PIO */
@@ -265,23 +319,24 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
 	}
 
 	dev_dbg(&host->pd->dev, "%s(): desc %p, cookie %d, sg[%d]\n", __func__,
-		desc, cookie, host->data->sg_len);
+		desc, cookie, data->sg_len);
 }
 
 static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
 {
-	struct scatterlist *sg = host->data->sg;
+	struct mmc_data *data = host->mrq->data;
+	struct scatterlist *sg = data->sg;
 	struct dma_async_tx_descriptor *desc = NULL;
 	struct dma_chan *chan = host->chan_tx;
 	dma_cookie_t cookie = -EINVAL;
 	int ret;
 
-	ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
+	ret = dma_map_sg(chan->device->dev, sg, data->sg_len,
 			 DMA_TO_DEVICE);
 	if (ret > 0) {
 		host->dma_active = true;
-		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+		desc = dmaengine_prep_slave_sg(chan, sg, ret,
+			DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	}
 
 	if (desc) {
@@ -292,7 +347,7 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
 		dma_async_issue_pending(chan);
 	}
 	dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
-		__func__, host->data->sg_len, ret, cookie);
+		__func__, data->sg_len, ret, cookie);
 
 	if (!desc) {
 		/* DMA failed, fall back to PIO */
@@ -399,7 +454,8 @@ static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
 		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
 	else
 		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
-			(ilog2(__rounddown_pow_of_two(host->clk / clk)) << 16));
+				((fls(DIV_ROUND_UP(host->clk,
+						   clk) - 1) - 1) << 16));
 
 	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
 }
@@ -421,7 +477,7 @@ static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
 static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
 {
 	u32 state1, state2;
-	int ret, timeout = 10000000;
+	int ret, timeout;
 
 	host->sd_error = false;
 
@@ -433,155 +489,212 @@ static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
 	if (state1 & STS1_CMDSEQ) {
 		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, CMD_CTRL_BREAK);
 		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, ~CMD_CTRL_BREAK);
-		while (1) {
-			timeout--;
-			if (timeout < 0) {
-				dev_err(&host->pd->dev,
-					"Forceed end of command sequence timeout err\n");
-				return -EIO;
-			}
+		for (timeout = 10000000; timeout; timeout--) {
 			if (!(sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1)
-								& STS1_CMDSEQ))
+			      & STS1_CMDSEQ))
 				break;
 			mdelay(1);
 		}
+		if (!timeout) {
+			dev_err(&host->pd->dev,
+				"Forced end of command sequence timeout err\n");
+			return -EIO;
+		}
 		sh_mmcif_sync_reset(host);
 		dev_dbg(&host->pd->dev, "Forced end of command sequence\n");
 		return -EIO;
 	}
 
 	if (state2 & STS2_CRC_ERR) {
-		dev_dbg(&host->pd->dev, ": Happened CRC error\n");
+		dev_dbg(&host->pd->dev, ": CRC error\n");
 		ret = -EIO;
 	} else if (state2 & STS2_TIMEOUT_ERR) {
-		dev_dbg(&host->pd->dev, ": Happened Timeout error\n");
+		dev_dbg(&host->pd->dev, ": Timeout\n");
 		ret = -ETIMEDOUT;
 	} else {
-		dev_dbg(&host->pd->dev, ": Happened End/Index error\n");
+		dev_dbg(&host->pd->dev, ": End/Index error\n");
 		ret = -EIO;
 	}
 	return ret;
 }
 
-static int sh_mmcif_single_read(struct sh_mmcif_host *host,
-					struct mmc_request *mrq)
+static bool sh_mmcif_next_block(struct sh_mmcif_host *host, u32 *p)
 {
-	struct mmc_data *data = mrq->data;
-	long time;
-	u32 blocksize, i, *p = sg_virt(data->sg);
+	struct mmc_data *data = host->mrq->data;
+
+	host->sg_blkidx += host->blocksize;
+
+	/* data->sg->length must be a multiple of host->blocksize? */
+	BUG_ON(host->sg_blkidx > data->sg->length);
+
+	if (host->sg_blkidx == data->sg->length) {
+		host->sg_blkidx = 0;
+		if (++host->sg_idx < data->sg_len)
+			host->pio_ptr = sg_virt(++data->sg);
+	} else {
+		host->pio_ptr = p;
+	}
+
+	if (host->sg_idx == data->sg_len)
+		return false;
+
+	return true;
+}
+
+static void sh_mmcif_single_read(struct sh_mmcif_host *host,
+				 struct mmc_request *mrq)
+{
+	host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
+			   BLOCK_SIZE_MASK) + 3;
+
+	host->wait_for = MMCIF_WAIT_FOR_READ;
+	schedule_delayed_work(&host->timeout_work, host->timeout);
 
 	/* buf read enable */
 	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-			host->timeout);
-	if (time <= 0 || host->sd_error)
-		return sh_mmcif_error_manage(host);
-
-	blocksize = (BLOCK_SIZE_MASK &
-			sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3;
-	for (i = 0; i < blocksize / 4; i++)
+}
+
+static bool sh_mmcif_read_block(struct sh_mmcif_host *host)
+{
+	struct mmc_data *data = host->mrq->data;
+	u32 *p = sg_virt(data->sg);
+	int i;
+
+	if (host->sd_error) {
+		data->error = sh_mmcif_error_manage(host);
+		return false;
+	}
+
+	for (i = 0; i < host->blocksize / 4; i++)
 		*p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA);
 
 	/* buffer read end */
 	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-			host->timeout);
-	if (time <= 0 || host->sd_error)
-		return sh_mmcif_error_manage(host);
+	host->wait_for = MMCIF_WAIT_FOR_READ_END;
 
-	return 0;
+	return true;
 }
 
-static int sh_mmcif_multi_read(struct sh_mmcif_host *host,
-					struct mmc_request *mrq)
+static void sh_mmcif_multi_read(struct sh_mmcif_host *host,
+				struct mmc_request *mrq)
 {
 	struct mmc_data *data = mrq->data;
-	long time;
-	u32 blocksize, i, j, sec, *p;
-
-	blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr,
-						     MMCIF_CE_BLOCK_SET);
-	for (j = 0; j < data->sg_len; j++) {
-		p = sg_virt(data->sg);
-		for (sec = 0; sec < data->sg->length / blocksize; sec++) {
-			sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
-			/* buf read enable */
-			time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-				host->timeout);
-
-			if (time <= 0 || host->sd_error)
-				return sh_mmcif_error_manage(host);
-
-			for (i = 0; i < blocksize / 4; i++)
-				*p++ = sh_mmcif_readl(host->addr,
-						      MMCIF_CE_DATA);
-		}
-		if (j < data->sg_len - 1)
-			data->sg++;
+
+	if (!data->sg_len || !data->sg->length)
+		return;
+
+	host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
+		BLOCK_SIZE_MASK;
+
+	host->wait_for = MMCIF_WAIT_FOR_MREAD;
+	host->sg_idx = 0;
+	host->sg_blkidx = 0;
+	host->pio_ptr = sg_virt(data->sg);
+	schedule_delayed_work(&host->timeout_work, host->timeout);
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
+}
+
+static bool sh_mmcif_mread_block(struct sh_mmcif_host *host)
+{
+	struct mmc_data *data = host->mrq->data;
+	u32 *p = host->pio_ptr;
+	int i;
+
+	if (host->sd_error) {
+		data->error = sh_mmcif_error_manage(host);
+		return false;
 	}
-	return 0;
+
+	BUG_ON(!data->sg->length);
+
+	for (i = 0; i < host->blocksize / 4; i++)
+		*p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA);
+
+	if (!sh_mmcif_next_block(host, p))
+		return false;
+
+	schedule_delayed_work(&host->timeout_work, host->timeout);
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
+
+	return true;
 }
 
-static int sh_mmcif_single_write(struct sh_mmcif_host *host,
+static void sh_mmcif_single_write(struct sh_mmcif_host *host,
 					struct mmc_request *mrq)
 {
-	struct mmc_data *data = mrq->data;
-	long time;
-	u32 blocksize, i, *p = sg_virt(data->sg);
+	host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
+			   BLOCK_SIZE_MASK) + 3;
 
-	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+	host->wait_for = MMCIF_WAIT_FOR_WRITE;
+	schedule_delayed_work(&host->timeout_work, host->timeout);
 
 	/* buf write enable */
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-			host->timeout);
-	if (time <= 0 || host->sd_error)
-		return sh_mmcif_error_manage(host);
-
-	blocksize = (BLOCK_SIZE_MASK &
-			sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3;
-	for (i = 0; i < blocksize / 4; i++)
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+}
+
+static bool sh_mmcif_write_block(struct sh_mmcif_host *host)
+{
+	struct mmc_data *data = host->mrq->data;
+	u32 *p = sg_virt(data->sg);
+	int i;
+
+	if (host->sd_error) {
+		data->error = sh_mmcif_error_manage(host);
+		return false;
+	}
+
+	for (i = 0; i < host->blocksize / 4; i++)
 		sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
 
 	/* buffer write end */
 	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
+	host->wait_for = MMCIF_WAIT_FOR_WRITE_END;
 
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-			host->timeout);
-	if (time <= 0 || host->sd_error)
-		return sh_mmcif_error_manage(host);
-
-	return 0;
+	return true;
 }
 
-static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
-						struct mmc_request *mrq)
+static void sh_mmcif_multi_write(struct sh_mmcif_host *host,
+				struct mmc_request *mrq)
 {
 	struct mmc_data *data = mrq->data;
-	long time;
-	u32 i, sec, j, blocksize, *p;
 
-	blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr,
-						     MMCIF_CE_BLOCK_SET);
+	if (!data->sg_len || !data->sg->length)
+		return;
 
-	for (j = 0; j < data->sg_len; j++) {
-		p = sg_virt(data->sg);
-		for (sec = 0; sec < data->sg->length / blocksize; sec++) {
-			sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
-			/* buf write enable*/
-			time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-				host->timeout);
+	host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
+		BLOCK_SIZE_MASK;
 
-			if (time <= 0 || host->sd_error)
-				return sh_mmcif_error_manage(host);
+	host->wait_for = MMCIF_WAIT_FOR_MWRITE;
+	host->sg_idx = 0;
+	host->sg_blkidx = 0;
+	host->pio_ptr = sg_virt(data->sg);
+	schedule_delayed_work(&host->timeout_work, host->timeout);
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+}
 
-			for (i = 0; i < blocksize / 4; i++)
-				sh_mmcif_writel(host->addr,
-						MMCIF_CE_DATA, *p++);
-		}
-		if (j < data->sg_len - 1)
-			data->sg++;
+static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host)
+{
+	struct mmc_data *data = host->mrq->data;
+	u32 *p = host->pio_ptr;
+	int i;
+
+	if (host->sd_error) {
+		data->error = sh_mmcif_error_manage(host);
+		return false;
 	}
-	return 0;
+
+	BUG_ON(!data->sg->length);
+
+	for (i = 0; i < host->blocksize / 4; i++)
+		sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
+
+	if (!sh_mmcif_next_block(host, p))
+		return false;
+
+	schedule_delayed_work(&host->timeout_work, host->timeout);
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+
+	return true;
 }
 
 static void sh_mmcif_get_response(struct sh_mmcif_host *host,
@@ -603,8 +716,11 @@ static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
 }
 
 static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
-		struct mmc_request *mrq, struct mmc_command *cmd, u32 opc)
+			    struct mmc_request *mrq)
 {
+	struct mmc_data *data = mrq->data;
+	struct mmc_command *cmd = mrq->cmd;
+	u32 opc = cmd->opcode;
 	u32 tmp = 0;
 
 	/* Response Type check */
@@ -631,12 +747,11 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
 	case MMC_SET_WRITE_PROT:
 	case MMC_CLR_WRITE_PROT:
 	case MMC_ERASE:
-	case MMC_GEN_CMD:
 		tmp |= CMD_SET_RBSY;
 		break;
 	}
 	/* WDAT / DATW */
-	if (host->data) {
+	if (data) {
 		tmp |= CMD_SET_WDAT;
 		switch (host->bus_width) {
 		case MMC_BUS_WIDTH_1:
@@ -660,7 +775,7 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
 	if (opc == MMC_READ_MULTIPLE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) {
 		tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
 		sh_mmcif_bitset(host, MMCIF_CE_BLOCK_SET,
-					mrq->data->blocks << 16);
+				data->blocks << 16);
 	}
 	/* RIDXC[1:0] check bits */
 	if (opc == MMC_SEND_OP_COND || opc == MMC_ALL_SEND_CID ||
@@ -674,68 +789,59 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
 		opc == MMC_SEND_CSD || opc == MMC_SEND_CID)
 		tmp |= CMD_SET_CRC7C_INTERNAL;
 
-	return opc = ((opc << 24) | tmp);
+	return (opc << 24) | tmp;
 }
 
 static int sh_mmcif_data_trans(struct sh_mmcif_host *host,
-				struct mmc_request *mrq, u32 opc)
+			       struct mmc_request *mrq, u32 opc)
 {
-	int ret;
-
 	switch (opc) {
 	case MMC_READ_MULTIPLE_BLOCK:
-		ret = sh_mmcif_multi_read(host, mrq);
-		break;
+		sh_mmcif_multi_read(host, mrq);
+		return 0;
 	case MMC_WRITE_MULTIPLE_BLOCK:
-		ret = sh_mmcif_multi_write(host, mrq);
-		break;
+		sh_mmcif_multi_write(host, mrq);
+		return 0;
 	case MMC_WRITE_BLOCK:
-		ret = sh_mmcif_single_write(host, mrq);
-		break;
+		sh_mmcif_single_write(host, mrq);
+		return 0;
 	case MMC_READ_SINGLE_BLOCK:
 	case MMC_SEND_EXT_CSD:
-		ret = sh_mmcif_single_read(host, mrq);
-		break;
+		sh_mmcif_single_read(host, mrq);
+		return 0;
 	default:
 		dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc);
-		ret = -EINVAL;
-		break;
+		return -EINVAL;
 	}
-	return ret;
 }
 
 static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
-			struct mmc_request *mrq, struct mmc_command *cmd)
+			       struct mmc_request *mrq)
 {
-	long time;
-	int ret = 0, mask = 0;
+	struct mmc_command *cmd = mrq->cmd;
 	u32 opc = cmd->opcode;
+	u32 mask;
 
 	switch (opc) {
-	/* respons busy check */
+	/* response busy check */
 	case MMC_SWITCH:
 	case MMC_STOP_TRANSMISSION:
 	case MMC_SET_WRITE_PROT:
 	case MMC_CLR_WRITE_PROT:
 	case MMC_ERASE:
-	case MMC_GEN_CMD:
-		mask = MASK_MRBSYE;
+		mask = MASK_START_CMD | MASK_MRBSYE;
 		break;
 	default:
-		mask = MASK_MCRSPE;
+		mask = MASK_START_CMD | MASK_MCRSPE;
 		break;
 	}
-	mask |=	MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
-		MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
-		MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
-		MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
 
-	if (host->data) {
+	if (mrq->data) {
 		sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0);
 		sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET,
 				mrq->data->blksz);
 	}
-	opc = sh_mmcif_set_cmd(host, mrq, cmd, opc);
+	opc = sh_mmcif_set_cmd(host, mrq);
 
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0);
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask);
@@ -744,80 +850,28 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
 	/* set cmd */
 	sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc);
 
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-		host->timeout);
-	if (time <= 0) {
-		cmd->error = sh_mmcif_error_manage(host);
-		return;
-	}
-	if (host->sd_error) {
-		switch (cmd->opcode) {
-		case MMC_ALL_SEND_CID:
-		case MMC_SELECT_CARD:
-		case MMC_APP_CMD:
-			cmd->error = -ETIMEDOUT;
-			break;
-		default:
-			dev_dbg(&host->pd->dev, "Cmd(d'%d) err\n",
-					cmd->opcode);
-			cmd->error = sh_mmcif_error_manage(host);
-			break;
-		}
-		host->sd_error = false;
-		return;
-	}
-	if (!(cmd->flags & MMC_RSP_PRESENT)) {
-		cmd->error = 0;
-		return;
-	}
-	sh_mmcif_get_response(host, cmd);
-	if (host->data) {
-		if (!host->dma_active) {
-			ret = sh_mmcif_data_trans(host, mrq, cmd->opcode);
-		} else {
-			long time =
-				wait_for_completion_interruptible_timeout(&host->dma_complete,
-									  host->timeout);
-			if (!time)
-				ret = -ETIMEDOUT;
-			else if (time < 0)
-				ret = time;
-			sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC,
-					BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
-			host->dma_active = false;
-		}
-		if (ret < 0)
-			mrq->data->bytes_xfered = 0;
-		else
-			mrq->data->bytes_xfered =
-				mrq->data->blocks * mrq->data->blksz;
-	}
-	cmd->error = ret;
+	host->wait_for = MMCIF_WAIT_FOR_CMD;
+	schedule_delayed_work(&host->timeout_work, host->timeout);
 }
 
 static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host,
-		struct mmc_request *mrq, struct mmc_command *cmd)
+			      struct mmc_request *mrq)
 {
-	long time;
-
-	if (mrq->cmd->opcode == MMC_READ_MULTIPLE_BLOCK)
+	switch (mrq->cmd->opcode) {
+	case MMC_READ_MULTIPLE_BLOCK:
 		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
-	else if (mrq->cmd->opcode == MMC_WRITE_MULTIPLE_BLOCK)
+		break;
+	case MMC_WRITE_MULTIPLE_BLOCK:
 		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
-	else {
+		break;
+	default:
 		dev_err(&host->pd->dev, "unsupported stop cmd\n");
-		cmd->error = sh_mmcif_error_manage(host);
+		mrq->stop->error = sh_mmcif_error_manage(host);
 		return;
 	}
 
-	time = wait_for_completion_interruptible_timeout(&host->intr_wait,
-			host->timeout);
-	if (time <= 0 || host->sd_error) {
-		cmd->error = sh_mmcif_error_manage(host);
-		return;
-	}
-	sh_mmcif_get_cmd12response(host, cmd);
-	cmd->error = 0;
+	host->wait_for = MMCIF_WAIT_FOR_STOP;
+	schedule_delayed_work(&host->timeout_work, host->timeout);
 }
 
 static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
@@ -856,23 +910,10 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	default:
 		break;
 	}
-	host->data = mrq->data;
-	if (mrq->data) {
-		if (mrq->data->flags & MMC_DATA_READ) {
-			if (host->chan_rx)
-				sh_mmcif_start_dma_rx(host);
-		} else {
-			if (host->chan_tx)
-				sh_mmcif_start_dma_tx(host);
-		}
-	}
-	sh_mmcif_start_cmd(host, mrq, mrq->cmd);
-	host->data = NULL;
 
-	if (!mrq->cmd->error && mrq->stop)
-		sh_mmcif_stop_cmd(host, mrq, mrq->stop);
-	host->state = STATE_IDLE;
-	mmc_request_done(mmc, mrq);
+	host->mrq = mrq;
+
+	sh_mmcif_start_cmd(host, mrq);
 }
 
 static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
@@ -947,9 +988,156 @@ static struct mmc_host_ops sh_mmcif_ops = {
 	.get_cd		= sh_mmcif_get_cd,
 };
 
-static void sh_mmcif_detect(struct mmc_host *mmc)
+static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host)
+{
+	struct mmc_command *cmd = host->mrq->cmd;
+	struct mmc_data *data = host->mrq->data;
+	long time;
+
+	if (host->sd_error) {
+		switch (cmd->opcode) {
+		case MMC_ALL_SEND_CID:
+		case MMC_SELECT_CARD:
+		case MMC_APP_CMD:
+			cmd->error = -ETIMEDOUT;
+			host->sd_error = false;
+			break;
+		default:
+			cmd->error = sh_mmcif_error_manage(host);
+			dev_dbg(&host->pd->dev, "Cmd(d'%d) error %d\n",
+				cmd->opcode, cmd->error);
+			break;
+		}
+		return false;
+	}
+	if (!(cmd->flags & MMC_RSP_PRESENT)) {
+		cmd->error = 0;
+		return false;
+	}
+
+	sh_mmcif_get_response(host, cmd);
+
+	if (!data)
+		return false;
+
+	if (data->flags & MMC_DATA_READ) {
+		if (host->chan_rx)
+			sh_mmcif_start_dma_rx(host);
+	} else {
+		if (host->chan_tx)
+			sh_mmcif_start_dma_tx(host);
+	}
+
+	if (!host->dma_active) {
+		data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode);
+		if (!data->error)
+			return true;
+		return false;
+	}
+
+	/* Running in the IRQ thread, can sleep */
+	time = wait_for_completion_interruptible_timeout(&host->dma_complete,
+							 host->timeout);
+	if (host->sd_error) {
+		dev_err(host->mmc->parent,
+			"Error IRQ while waiting for DMA completion!\n");
+		/* Woken up by an error IRQ: abort DMA */
+		if (data->flags & MMC_DATA_READ)
+			dmaengine_terminate_all(host->chan_rx);
+		else
+			dmaengine_terminate_all(host->chan_tx);
+		data->error = sh_mmcif_error_manage(host);
+	} else if (!time) {
+		data->error = -ETIMEDOUT;
+	} else if (time < 0) {
+		data->error = time;
+	}
+	sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC,
+			BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
+	host->dma_active = false;
+
+	if (data->error)
+		data->bytes_xfered = 0;
+
+	return false;
+}
+
+static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id)
 {
-	mmc_detect_change(mmc, 0);
+	struct sh_mmcif_host *host = dev_id;
+	struct mmc_request *mrq = host->mrq;
+	struct mmc_data *data = mrq->data;
+
+	cancel_delayed_work_sync(&host->timeout_work);
+
+	/*
+	 * All handlers return true, if processing continues, and false, if the
+	 * request has to be completed - successfully or not
+	 */
+	switch (host->wait_for) {
+	case MMCIF_WAIT_FOR_REQUEST:
+		/* We're too late, the timeout has already kicked in */
+		return IRQ_HANDLED;
+	case MMCIF_WAIT_FOR_CMD:
+		if (sh_mmcif_end_cmd(host))
+			/* Wait for data */
+			return IRQ_HANDLED;
+		break;
+	case MMCIF_WAIT_FOR_MREAD:
+		if (sh_mmcif_mread_block(host))
+			/* Wait for more data */
+			return IRQ_HANDLED;
+		break;
+	case MMCIF_WAIT_FOR_READ:
+		if (sh_mmcif_read_block(host))
+			/* Wait for data end */
+			return IRQ_HANDLED;
+		break;
+	case MMCIF_WAIT_FOR_MWRITE:
+		if (sh_mmcif_mwrite_block(host))
+			/* Wait data to write */
+			return IRQ_HANDLED;
+		break;
+	case MMCIF_WAIT_FOR_WRITE:
+		if (sh_mmcif_write_block(host))
+			/* Wait for data end */
+			return IRQ_HANDLED;
+		break;
+	case MMCIF_WAIT_FOR_STOP:
+		if (host->sd_error) {
+			mrq->stop->error = sh_mmcif_error_manage(host);
+			break;
+		}
+		sh_mmcif_get_cmd12response(host, mrq->stop);
+		mrq->stop->error = 0;
+		break;
+	case MMCIF_WAIT_FOR_READ_END:
+	case MMCIF_WAIT_FOR_WRITE_END:
+		if (host->sd_error)
+			data->error = sh_mmcif_error_manage(host);
+		break;
+	default:
+		BUG();
+	}
+
+	if (host->wait_for != MMCIF_WAIT_FOR_STOP) {
+		if (!mrq->cmd->error && data && !data->error)
+			data->bytes_xfered =
+				data->blocks * data->blksz;
+
+		if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) {
+			sh_mmcif_stop_cmd(host, mrq);
+			if (!mrq->stop->error)
+				return IRQ_HANDLED;
+		}
+	}
+
+	host->wait_for = MMCIF_WAIT_FOR_REQUEST;
+	host->state = STATE_IDLE;
+	host->mrq = NULL;
+	mmc_request_done(host->mmc, mrq);
+
+	return IRQ_HANDLED;
 }
 
 static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
@@ -960,7 +1148,12 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
 
 	state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
 
-	if (state & INT_RBSYE) {
+	if (state & INT_ERR_STS) {
+		/* error interrupts - process first */
+		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
+		err = 1;
+	} else if (state & INT_RBSYE) {
 		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
 				~(INT_RBSYE | INT_CRSPE));
 		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
@@ -988,11 +1181,6 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
 		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
 				~(INT_CMD12RBE | INT_CMD12CRE));
 		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
-	} else if (state & INT_ERR_STS) {
-		/* err interrupts */
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
-		err = 1;
 	} else {
 		dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state);
 		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
@@ -1003,14 +1191,57 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
 		host->sd_error = true;
 		dev_dbg(&host->pd->dev, "int err state = %08x\n", state);
 	}
-	if (state & ~(INT_CMD12RBE | INT_CMD12CRE))
-		complete(&host->intr_wait);
-	else
+	if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
+		if (!host->dma_active)
+			return IRQ_WAKE_THREAD;
+		else if (host->sd_error)
+			mmcif_dma_complete(host);
+	} else {
 		dev_dbg(&host->pd->dev, "Unexpected IRQ 0x%x\n", state);
+	}
 
 	return IRQ_HANDLED;
 }
 
+static void mmcif_timeout_work(struct work_struct *work)
+{
+	struct delayed_work *d = container_of(work, struct delayed_work, work);
+	struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work);
+	struct mmc_request *mrq = host->mrq;
+
+	if (host->dying)
+		/* Don't run after mmc_remove_host() */
+		return;
+
+	/*
+	 * Handle races with cancel_delayed_work(), unless
+	 * cancel_delayed_work_sync() is used
+	 */
+	switch (host->wait_for) {
+	case MMCIF_WAIT_FOR_CMD:
+		mrq->cmd->error = sh_mmcif_error_manage(host);
+		break;
+	case MMCIF_WAIT_FOR_STOP:
+		mrq->stop->error = sh_mmcif_error_manage(host);
+		break;
+	case MMCIF_WAIT_FOR_MREAD:
+	case MMCIF_WAIT_FOR_MWRITE:
+	case MMCIF_WAIT_FOR_READ:
+	case MMCIF_WAIT_FOR_WRITE:
+	case MMCIF_WAIT_FOR_READ_END:
+	case MMCIF_WAIT_FOR_WRITE_END:
+		mrq->data->error = sh_mmcif_error_manage(host);
+		break;
+	default:
+		BUG();
+	}
+
+	host->state = STATE_IDLE;
+	host->wait_for = MMCIF_WAIT_FOR_REQUEST;
+	host->mrq = NULL;
+	mmc_request_done(host->mmc, mrq);
+}
+
 static int __devinit sh_mmcif_probe(struct platform_device *pdev)
 {
 	int ret = 0, irq[2];
@@ -1064,18 +1295,11 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
 	host->clk = clk_get_rate(host->hclk);
 	host->pd = pdev;
 
-	init_completion(&host->intr_wait);
 	spin_lock_init(&host->lock);
 
 	mmc->ops = &sh_mmcif_ops;
-	mmc->f_max = host->clk;
-	/* close to 400KHz */
-	if (mmc->f_max < 51200000)
-		mmc->f_min = mmc->f_max / 128;
-	else if (mmc->f_max < 102400000)
-		mmc->f_min = mmc->f_max / 256;
-	else
-		mmc->f_min = mmc->f_max / 512;
+	mmc->f_max = host->clk / 2;
+	mmc->f_min = host->clk / 512;
 	if (pd->ocr)
 		mmc->ocr_avail = pd->ocr;
 	mmc->caps = MMC_CAP_MMC_HIGHSPEED;
@@ -1097,31 +1321,37 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto clean_up2;
 
-	mmc_add_host(mmc);
+	INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
 
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
 
-	ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host);
+	ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host);
 	if (ret) {
 		dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n");
 		goto clean_up3;
 	}
-	ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host);
+	ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host);
 	if (ret) {
-		free_irq(irq[0], host);
 		dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
-		goto clean_up3;
+		goto clean_up4;
 	}
 
-	sh_mmcif_detect(host->mmc);
+	ret = mmc_add_host(mmc);
+	if (ret < 0)
+		goto clean_up5;
+
+	dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
 
 	dev_info(&pdev->dev, "driver version %s\n", DRIVER_VERSION);
 	dev_dbg(&pdev->dev, "chip ver H'%04x\n",
 		sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
 	return ret;
 
+clean_up5:
+	free_irq(irq[1], host);
+clean_up4:
+	free_irq(irq[0], host);
 clean_up3:
-	mmc_remove_host(mmc);
 	pm_runtime_suspend(&pdev->dev);
 clean_up2:
 	pm_runtime_disable(&pdev->dev);
@@ -1139,11 +1369,21 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev)
 	struct sh_mmcif_host *host = platform_get_drvdata(pdev);
 	int irq[2];
 
+	host->dying = true;
 	pm_runtime_get_sync(&pdev->dev);
 
+	dev_pm_qos_hide_latency_limit(&pdev->dev);
+
 	mmc_remove_host(host->mmc);
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
 
+	/*
+	 * FIXME: cancel_delayed_work(_sync)() and free_irq() race with the
+	 * mmc_remove_host() call above. But swapping order doesn't help either
+	 * (a query on the linux-mmc mailing list didn't bring any replies).
+	 */
+	cancel_delayed_work_sync(&host->timeout_work);
+
 	if (host->addr)
 		iounmap(host->addr);
 
@@ -1206,19 +1446,7 @@ static struct platform_driver sh_mmcif_driver = {
 	},
 };
 
-static int __init sh_mmcif_init(void)
-{
-	return platform_driver_register(&sh_mmcif_driver);
-}
-
-static void __exit sh_mmcif_exit(void)
-{
-	platform_driver_unregister(&sh_mmcif_driver);
-}
-
-module_init(sh_mmcif_init);
-module_exit(sh_mmcif_exit);
-
+module_platform_driver(sh_mmcif_driver);
 
 MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 41ae6466bd8..934b68e9efc 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -90,6 +90,15 @@ static int sh_mobile_sdhi_write16_hook(struct tmio_mmc_host *host, int addr)
 	return 0;
 }
 
+static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev)
+{
+	mmc_detect_change(dev_get_drvdata(&pdev->dev), msecs_to_jiffies(100));
+}
+
+static const struct sh_mobile_sdhi_ops sdhi_ops = {
+	.cd_wakeup = sh_mobile_sdhi_cd_wakeup,
+};
+
 static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 {
 	struct sh_mobile_sdhi *priv;
@@ -109,6 +118,12 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 	mmc_data = &priv->mmc_data;
 	p->pdata = mmc_data;
 
+	if (p->init) {
+		ret = p->init(pdev, &sdhi_ops);
+		if (ret)
+			goto einit;
+	}
+
 	snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id);
 	priv->clk = clk_get(&pdev->dev, clk_name);
 	if (IS_ERR(priv->clk)) {
@@ -117,8 +132,6 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 		goto eclkget;
 	}
 
-	clk_enable(priv->clk);
-
 	mmc_data->hclk = clk_get_rate(priv->clk);
 	mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
 	mmc_data->get_cd = sh_mobile_sdhi_get_cd;
@@ -129,6 +142,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 			mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
 		mmc_data->ocr_mask = p->tmio_ocr_mask;
 		mmc_data->capabilities |= p->tmio_caps;
+		mmc_data->cd_gpio = p->cd_gpio;
 
 		if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
 			priv->param_tx.slave_id = p->dma_slave_tx;
@@ -211,7 +225,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 
 	dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
 		 mmc_hostname(host->mmc), (unsigned long)
-		 (platform_get_resource(pdev,IORESOURCE_MEM, 0)->start),
+		 (platform_get_resource(pdev, IORESOURCE_MEM, 0)->start),
 		 mmc_data->hclk / 1000000);
 
 	return ret;
@@ -232,9 +246,11 @@ eirq_sdio:
 eirq_card_detect:
 	tmio_mmc_host_remove(host);
 eprobe:
-	clk_disable(priv->clk);
 	clk_put(priv->clk);
 eclkget:
+	if (p->cleanup)
+		p->cleanup(pdev);
+einit:
 	kfree(priv);
 	return ret;
 }
@@ -258,8 +274,11 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
 		free_irq(irq, host);
 	}
 
-	clk_disable(priv->clk);
 	clk_put(priv->clk);
+
+	if (p->cleanup)
+		p->cleanup(pdev);
+
 	kfree(priv);
 
 	return 0;
@@ -282,18 +301,7 @@ static struct platform_driver sh_mobile_sdhi_driver = {
 	.remove		= __devexit_p(sh_mobile_sdhi_remove),
 };
 
-static int __init sh_mobile_sdhi_init(void)
-{
-	return platform_driver_register(&sh_mobile_sdhi_driver);
-}
-
-static void __exit sh_mobile_sdhi_exit(void)
-{
-	platform_driver_unregister(&sh_mobile_sdhi_driver);
-}
-
-module_init(sh_mobile_sdhi_init);
-module_exit(sh_mobile_sdhi_exit);
+module_platform_driver(sh_mobile_sdhi_driver);
 
 MODULE_DESCRIPTION("SuperH Mobile SDHI driver");
 MODULE_AUTHOR("Magnus Damm");
diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c
index f70d04664ca..43d962829f8 100644
--- a/drivers/mmc/host/tifm_sd.c
+++ b/drivers/mmc/host/tifm_sd.c
@@ -22,8 +22,8 @@
 #define DRIVER_NAME "tifm_sd"
 #define DRIVER_VERSION "0.8"
 
-static int no_dma = 0;
-static int fixed_timeout = 0;
+static bool no_dma = 0;
+static bool fixed_timeout = 0;
 module_param(no_dma, bool, 0644);
 module_param(fixed_timeout, bool, 0644);
 
@@ -118,7 +118,7 @@ static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg,
 	unsigned char *buf;
 	unsigned int pos = 0, val;
 
-	buf = kmap_atomic(pg, KM_BIO_DST_IRQ) + off;
+	buf = kmap_atomic(pg) + off;
 	if (host->cmd_flags & DATA_CARRY) {
 		buf[pos++] = host->bounce_buf_data[0];
 		host->cmd_flags &= ~DATA_CARRY;
@@ -134,7 +134,7 @@ static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg,
 		}
 		buf[pos++] = (val >> 8) & 0xff;
 	}
-	kunmap_atomic(buf - off, KM_BIO_DST_IRQ);
+	kunmap_atomic(buf - off);
 }
 
 static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
@@ -144,7 +144,7 @@ static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
 	unsigned char *buf;
 	unsigned int pos = 0, val;
 
-	buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + off;
+	buf = kmap_atomic(pg) + off;
 	if (host->cmd_flags & DATA_CARRY) {
 		val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00);
 		writel(val, sock->addr + SOCK_MMCSD_DATA);
@@ -161,7 +161,7 @@ static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
 		val |= (buf[pos++] << 8) & 0xff00;
 		writel(val, sock->addr + SOCK_MMCSD_DATA);
 	}
-	kunmap_atomic(buf - off, KM_BIO_SRC_IRQ);
+	kunmap_atomic(buf - off);
 }
 
 static void tifm_sd_transfer_data(struct tifm_sd *host)
@@ -212,13 +212,13 @@ 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;
+	unsigned char *src_buf = kmap_atomic(src) + src_off;
+	unsigned char *dst_buf = kmap_atomic(dst) + 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);
+	kunmap_atomic(dst_buf - dst_off);
+	kunmap_atomic(src_buf - src_off);
 }
 
 static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data)
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index a4ea1024278..113ce6c9cf3 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -138,19 +138,7 @@ static struct platform_driver tmio_mmc_driver = {
 	.resume = tmio_mmc_resume,
 };
 
-
-static int __init tmio_mmc_init(void)
-{
-	return platform_driver_register(&tmio_mmc_driver);
-}
-
-static void __exit tmio_mmc_exit(void)
-{
-	platform_driver_unregister(&tmio_mmc_driver);
-}
-
-module_init(tmio_mmc_init);
-module_exit(tmio_mmc_exit);
+module_platform_driver(tmio_mmc_driver);
 
 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 3020f98218f..d857f5c6e7d 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -20,8 +20,8 @@
 #include <linux/mmc/tmio.h>
 #include <linux/mutex.h>
 #include <linux/pagemap.h>
-#include <linux/spinlock.h>
 #include <linux/scatterlist.h>
+#include <linux/spinlock.h>
 
 /* Definitions for values the CTRL_SDIO_STATUS register can take. */
 #define TMIO_SDIO_STAT_IOIRQ	0x0001
@@ -47,16 +47,14 @@ struct tmio_mmc_host {
 	struct mmc_request      *mrq;
 	struct mmc_data         *data;
 	struct mmc_host         *mmc;
-	unsigned int		sdio_irq_enabled;
+
+	/* Controller power state */
+	bool			power;
 
 	/* Callbacks for clock / power control */
 	void (*set_pwr)(struct platform_device *host, int state);
 	void (*set_clk_div)(struct platform_device *host, int state);
 
-	int			pm_error;
-	/* recognise system-wide suspend in runtime PM methods */
-	bool			pm_global;
-
 	/* pio related stuff */
 	struct scatterlist      *sg_ptr;
 	struct scatterlist      *sg_orig;
@@ -86,6 +84,7 @@ struct tmio_mmc_host {
 	spinlock_t		lock;		/* protect host private data */
 	unsigned long		last_req_ts;
 	struct mutex		ios_lock;	/* protect set_ios() context */
+	bool			native_hotplug;
 };
 
 int tmio_mmc_host_probe(struct tmio_mmc_host **host,
@@ -105,13 +104,13 @@ static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
 					 unsigned long *flags)
 {
 	local_irq_save(*flags);
-	return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+	return kmap_atomic(sg_page(sg)) + sg->offset;
 }
 
 static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
 					  unsigned long *flags, void *virt)
 {
-	kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ);
+	kunmap_atomic(virt - sg->offset);
 	local_irq_restore(*flags);
 }
 
@@ -120,6 +119,7 @@ void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data);
 void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable);
 void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata);
 void tmio_mmc_release_dma(struct tmio_mmc_host *host);
+void tmio_mmc_abort_dma(struct tmio_mmc_host *host);
 #else
 static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host,
 			       struct mmc_data *data)
@@ -140,6 +140,10 @@ static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host,
 static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host)
 {
 }
+
+static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
+{
+}
 #endif
 
 #ifdef CONFIG_PM
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 86f259cdfcb..fff92860485 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -34,6 +34,18 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
 #endif
 }
 
+void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
+{
+	tmio_mmc_enable_dma(host, false);
+
+	if (host->chan_rx)
+		dmaengine_terminate_all(host->chan_rx);
+	if (host->chan_tx)
+		dmaengine_terminate_all(host->chan_tx);
+
+	tmio_mmc_enable_dma(host, true);
+}
+
 static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
 {
 	struct scatterlist *sg = host->sg_ptr, *sg_tmp;
@@ -76,8 +88,8 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
 
 	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE);
 	if (ret > 0)
-		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_FROM_DEVICE, DMA_CTRL_ACK);
+		desc = dmaengine_prep_slave_sg(chan, sg, ret,
+			DMA_DEV_TO_MEM, DMA_CTRL_ACK);
 
 	if (desc) {
 		cookie = dmaengine_submit(desc);
@@ -157,8 +169,8 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
 
 	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE);
 	if (ret > 0)
-		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_TO_DEVICE, DMA_CTRL_ACK);
+		desc = dmaengine_prep_slave_sg(chan, sg, ret,
+			DMA_MEM_TO_DEV, DMA_CTRL_ACK);
 
 	if (desc) {
 		cookie = dmaengine_submit(desc);
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 4208b395806..9a7996ade58 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -34,15 +34,17 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/mfd/tmio.h>
+#include <linux/mmc/cd-gpio.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/tmio.h>
 #include <linux/module.h>
 #include <linux/pagemap.h>
 #include <linux/platform_device.h>
+#include <linux/pm_qos.h>
 #include <linux/pm_runtime.h>
 #include <linux/scatterlist.h>
-#include <linux/workqueue.h>
 #include <linux/spinlock.h>
+#include <linux/workqueue.h>
 
 #include "tmio_mmc.h"
 
@@ -126,7 +128,6 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 
 	if (enable) {
-		host->sdio_irq_enabled = 1;
 		host->sdio_irq_mask = TMIO_SDIO_MASK_ALL &
 					~TMIO_SDIO_STAT_IOIRQ;
 		sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001);
@@ -135,7 +136,6 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 		host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
 		sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
 		sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000);
-		host->sdio_irq_enabled = 0;
 	}
 }
 
@@ -246,6 +246,7 @@ static void tmio_mmc_reset_work(struct work_struct *work)
 	/* Ready for new calls */
 	host->mrq = NULL;
 
+	tmio_mmc_abort_dma(host);
 	mmc_request_done(host->mmc, mrq);
 }
 
@@ -272,6 +273,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
 	host->mrq = NULL;
 	spin_unlock_irqrestore(&host->lock, flags);
 
+	if (mrq->cmd->error || (mrq->data && mrq->data->error))
+		tmio_mmc_abort_dma(host);
+
 	mmc_request_done(host->mmc, mrq);
 }
 
@@ -299,6 +303,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
 {
 	struct mmc_data *data = host->data;
 	int c = cmd->opcode;
+	u32 irq_mask = TMIO_MASK_CMD;
 
 	/* Command 12 is handled by hardware */
 	if (cmd->opcode == 12 && !cmd->arg) {
@@ -334,7 +339,9 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
 			c |= TRANSFER_READ;
 	}
 
-	tmio_mmc_enable_mmc_irqs(host, TMIO_MASK_CMD);
+	if (!host->native_hotplug)
+		irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
+	tmio_mmc_enable_mmc_irqs(host, irq_mask);
 
 	/* Fire off the command */
 	sd_ctrl_write32(host, CTL_ARG_REG, cmd->arg);
@@ -753,7 +760,7 @@ fail:
 static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct tmio_mmc_host *host = mmc_priv(mmc);
-	struct tmio_mmc_data *pdata = host->pdata;
+	struct device *dev = &host->pdev->dev;
 	unsigned long flags;
 
 	mutex_lock(&host->ios_lock);
@@ -761,13 +768,13 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	spin_lock_irqsave(&host->lock, flags);
 	if (host->mrq) {
 		if (IS_ERR(host->mrq)) {
-			dev_dbg(&host->pdev->dev,
+			dev_dbg(dev,
 				"%s.%d: concurrent .set_ios(), clk %u, mode %u\n",
 				current->comm, task_pid_nr(current),
 				ios->clock, ios->power_mode);
 			host->mrq = ERR_PTR(-EINTR);
 		} else {
-			dev_dbg(&host->pdev->dev,
+			dev_dbg(dev,
 				"%s.%d: CMD%u active since %lu, now %lu!\n",
 				current->comm, task_pid_nr(current),
 				host->mrq->cmd->opcode, host->last_req_ts, jiffies);
@@ -783,13 +790,15 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	spin_unlock_irqrestore(&host->lock, flags);
 
 	/*
-	 * pdata->power == false only if COLD_CD is available, otherwise only
-	 * in short time intervals during probing or resuming
+	 * host->power toggles between false and true in both cases - either
+	 * or not the controller can be runtime-suspended during inactivity.
+	 * But if the controller has to be kept on, the runtime-pm usage_count
+	 * is kept positive, so no suspending actually takes place.
 	 */
 	if (ios->power_mode == MMC_POWER_ON && ios->clock) {
-		if (!pdata->power) {
-			pm_runtime_get_sync(&host->pdev->dev);
-			pdata->power = true;
+		if (!host->power) {
+			pm_runtime_get_sync(dev);
+			host->power = true;
 		}
 		tmio_mmc_set_clock(host, ios->clock);
 		/* power up SD bus */
@@ -800,10 +809,9 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	} else if (ios->power_mode != MMC_POWER_UP) {
 		if (host->set_pwr && ios->power_mode == MMC_POWER_OFF)
 			host->set_pwr(host->pdev, 0);
-		if ((pdata->flags & TMIO_MMC_HAS_COLD_CD) &&
-		    pdata->power) {
-			pdata->power = false;
-			pm_runtime_put(&host->pdev->dev);
+		if (host->power) {
+			host->power = false;
+			pm_runtime_put(dev);
 		}
 		tmio_mmc_clk_stop(host);
 	}
@@ -909,12 +917,32 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
 	else
 		mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
 
-	pdata->power = false;
+	_host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD ||
+				  mmc->caps & MMC_CAP_NEEDS_POLL ||
+				  mmc->caps & MMC_CAP_NONREMOVABLE);
+
+	_host->power = false;
 	pm_runtime_enable(&pdev->dev);
 	ret = pm_runtime_resume(&pdev->dev);
 	if (ret < 0)
 		goto pm_disable;
 
+	/*
+	 * There are 4 different scenarios for the card detection:
+	 *  1) an external gpio irq handles the cd (best for power savings)
+	 *  2) internal sdhi irq handles the cd
+	 *  3) a worker thread polls the sdhi - indicated by MMC_CAP_NEEDS_POLL
+	 *  4) the medium is non-removable - indicated by MMC_CAP_NONREMOVABLE
+	 *
+	 *  While we increment the runtime PM counter for all scenarios when
+	 *  the mmc core activates us by calling an appropriate set_ios(), we
+	 *  must additionally ensure that in case 2) the tmio mmc hardware stays
+	 *  additionally ensure that in case 2) the tmio mmc hardware stays
+	 *  powered on during runtime for the card detection to work.
+	 */
+	if (_host->native_hotplug)
+		pm_runtime_get_noresume(&pdev->dev);
+
 	tmio_mmc_clk_stop(_host);
 	tmio_mmc_reset(_host);
 
@@ -933,22 +961,28 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
 	/* See if we also get DMA */
 	tmio_mmc_request_dma(_host, pdata);
 
-	/* We have to keep the device powered for its card detection to work */
-	if (!(pdata->flags & TMIO_MMC_HAS_COLD_CD)) {
-		pdata->power = true;
-		pm_runtime_get_noresume(&pdev->dev);
-	}
-
 	mmc_add_host(mmc);
 
+	dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
+
 	/* Unmask the IRQs we want to know about */
 	if (!_host->chan_rx)
 		irq_mask |= TMIO_MASK_READOP;
 	if (!_host->chan_tx)
 		irq_mask |= TMIO_MASK_WRITEOP;
+	if (!_host->native_hotplug)
+		irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
 
 	tmio_mmc_enable_mmc_irqs(_host, irq_mask);
 
+	if (pdata->flags & TMIO_MMC_USE_GPIO_CD) {
+		ret = mmc_cd_gpio_request(mmc, pdata->cd_gpio);
+		if (ret < 0) {
+			tmio_mmc_host_remove(_host);
+			return ret;
+		}
+	}
+
 	*host = _host;
 
 	return 0;
@@ -966,18 +1000,22 @@ EXPORT_SYMBOL(tmio_mmc_host_probe);
 void tmio_mmc_host_remove(struct tmio_mmc_host *host)
 {
 	struct platform_device *pdev = host->pdev;
+	struct tmio_mmc_data *pdata = host->pdata;
+	struct mmc_host *mmc = host->mmc;
 
-	/*
-	 * We don't have to manipulate pdata->power here: if there is a card in
-	 * the slot, the runtime PM is active and our .runtime_resume() will not
-	 * be run. If there is no card in the slot and the platform can suspend
-	 * the controller, the runtime PM is suspended and pdata->power == false,
-	 * so, our .runtime_resume() will not try to detect a card in the slot.
-	 */
-	if (host->pdata->flags & TMIO_MMC_HAS_COLD_CD)
+	if (pdata->flags & TMIO_MMC_USE_GPIO_CD)
+		/*
+		 * This means we can miss a card-eject, but this is anyway
+		 * possible, because of delayed processing of hotplug events.
+		 */
+		mmc_cd_gpio_free(mmc);
+
+	if (!host->native_hotplug)
 		pm_runtime_get_sync(&pdev->dev);
 
-	mmc_remove_host(host->mmc);
+	dev_pm_qos_hide_latency_limit(&pdev->dev);
+
+	mmc_remove_host(mmc);
 	cancel_work_sync(&host->done);
 	cancel_delayed_work_sync(&host->delayed_reset_work);
 	tmio_mmc_release_dma(host);
@@ -986,7 +1024,7 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
 	pm_runtime_disable(&pdev->dev);
 
 	iounmap(host->ctl);
-	mmc_free_host(host->mmc);
+	mmc_free_host(mmc);
 }
 EXPORT_SYMBOL(tmio_mmc_host_remove);
 
@@ -1000,8 +1038,6 @@ int tmio_mmc_host_suspend(struct device *dev)
 	if (!ret)
 		tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_ALL);
 
-	host->pm_error = pm_runtime_put_sync(dev);
-
 	return ret;
 }
 EXPORT_SYMBOL(tmio_mmc_host_suspend);
@@ -1011,20 +1047,10 @@ int tmio_mmc_host_resume(struct device *dev)
 	struct mmc_host *mmc = dev_get_drvdata(dev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 
-	/* The MMC core will perform the complete set up */
-	host->pdata->power = false;
-
-	host->pm_global = true;
-	if (!host->pm_error)
-		pm_runtime_get_sync(dev);
-
-	if (host->pm_global) {
-		/* Runtime PM resume callback didn't run */
-		tmio_mmc_reset(host);
-		tmio_mmc_enable_dma(host, true);
-		host->pm_global = false;
-	}
+	tmio_mmc_reset(host);
+	tmio_mmc_enable_dma(host, true);
 
+	/* The MMC core will perform the complete set up */
 	return mmc_resume_host(mmc);
 }
 EXPORT_SYMBOL(tmio_mmc_host_resume);
@@ -1041,19 +1067,10 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
 {
 	struct mmc_host *mmc = dev_get_drvdata(dev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
-	struct tmio_mmc_data *pdata = host->pdata;
 
 	tmio_mmc_reset(host);
 	tmio_mmc_enable_dma(host, true);
 
-	if (pdata->power) {
-		/* Only entered after a card-insert interrupt */
-		if (!mmc->card)
-			tmio_mmc_set_ios(mmc, &mmc->ios);
-		mmc_detect_change(mmc, msecs_to_jiffies(100));
-	}
-	host->pm_global = false;
-
 	return 0;
 }
 EXPORT_SYMBOL(tmio_mmc_host_runtime_resume);
diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c
index 2ec978bc32b..3135a1a5d75 100644
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -223,25 +223,25 @@ enum SD_RESPONSE_TYPE {
 #define FUN(c) (0x000007 & (c->arg>>28))
 #define REG(c) (0x01FFFF & (c->arg>>9))
 
-static int limit_speed_to_24_MHz;
+static bool limit_speed_to_24_MHz;
 module_param(limit_speed_to_24_MHz, bool, 0644);
 MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz");
 
-static int pad_input_to_usb_pkt;
+static bool pad_input_to_usb_pkt;
 module_param(pad_input_to_usb_pkt, bool, 0644);
 MODULE_PARM_DESC(pad_input_to_usb_pkt,
 		 "Pad USB data input transfers to whole USB Packet");
 
-static int disable_offload_processing;
+static bool disable_offload_processing;
 module_param(disable_offload_processing, bool, 0644);
 MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing");
 
-static int force_1_bit_data_xfers;
+static bool force_1_bit_data_xfers;
 module_param(force_1_bit_data_xfers, bool, 0644);
 MODULE_PARM_DESC(force_1_bit_data_xfers,
 		 "Force SDIO Data Transfers to 1-bit Mode");
 
-static int force_polling_for_irqs;
+static bool force_polling_for_irqs;
 module_param(force_polling_for_irqs, bool, 0644);
 MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts");
author	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>	2012-04-18 15:52:50 -0400
committer	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>	2012-04-18 15:52:50 -0400
commit	681e4a5e13c1c8315694eb4f44e0cdd84c9082d2 (patch)
tree	699f14527c118859026e8ce0214e689d0b9c88cb /drivers/mmc/host
parent	b960d6c43a63ebd2d8518b328da3816b833ee8cc (diff)
parent	c104f1fa1ecf4ee0fc06e31b1f77630b2551be81 (diff)