Merge tag 'mmc-v3.17-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson: "Me and Chris Ball decided to try out using my MMC tree as the primary one, to simplify handling of patches. This pull does thus contains all the MMC patches for 3.17 rc1, no pull from Chris this time. Details: MMC core: - forward compatibility for eMMC - fix some blacklisted cards with broken secure discard MMC host: - mmci: Add support for Qualcomm variant - mmci: Fix regression for arm_variant - sdhci: Various fixes and cleanups - sdhci: Improve external VDD regulator support - sdhci: Support for DDR50 1.8V mode for BayTrail - sdhci-st: Add driver for ST SDHCI controller - sh-mmcif: DMA fixes - omap_hsmmc: Add support for SDIO interrupts - sdhci-pci: Add support for Intel Quark X1000 - dw_mmc: Update the reset sequence - s3cmci: port DMA code to dmaengine API" * tag 'mmc-v3.17-1' of git://git.linaro.org/people/ulf.hansson/mmc: (67 commits) mmc: dw_mmc: modify the dt-binding for removing slot-node and supports-highspeed mmc: dw_mmc: Slot quirk "disable-wp" is deprecated. mmc: mmci: Reverse IRQ handling for the arm_variant mmc: mmci: Move all CMD irq handling to mmci_cmd_irq() mmc: mmci: Remove redundant check of status for DATA irq mmc: dw_mmc: change to use recommended reset procedure mmc: sdhci-pxav3: Use devm_* managed helpers mmc: tmio: Configure DMA slave bus width mmc: sh_mmcif: Configure DMA slave bus width mmc: sh_mmcif: Fix DMA slave address configuration mmc: sh_mmcif: Document DT bindings mmc: sdhci-pci: remove PCI PM functions in suspend/resume callback mmc: Do not advertise secure discard if it is blacklisted mmc: sdhci-msm: Get COMPILE_TEST support mmc: sdhci-msm: Remove unnecessary header file inclusion mmc: sdhci-msm: Fix the binding example mmc: sdhci: add DDR50 1.8V mode support for BayTrail eMMC Controller mmc: sdhci: Preset value not supported in Baytrail eMMC mmc: MMC_USDHI6ROL0 should depend on HAS_DMA mmc: MMC_SH_MMCIF should depend on HAS_DMA ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2014-08-14 17:15:53 +0200
committer: Linus Torvalds <torvalds@linux-foundation.org> 2014-08-14 17:15:53 +0200
commit: a8e4def604a9affa04fdd4efa0692da1385ffa3f (patch)
tree: ab7c02cbfbd72cc4fe60674cd5da7e3d01035f00 /drivers/mmc
parent: Merge branch 'for-3.17/drivers' of git://git.kernel.dk/linux-block (diff)
parent: mmc: dw_mmc: modify the dt-binding for removing slot-node and supports-highspeed (diff)
download: linux-a8e4def604a9affa04fdd4efa0692da1385ffa3f.tar.xz
linux-a8e4def604a9affa04fdd4efa0692da1385ffa3f.zip
28 files changed, 906 insertions, 436 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 452782bffebc..ede41f05c392 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2028,8 +2028,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 		/* complete ongoing async transfer before issuing discard */
 		if (card->host->areq)
 			mmc_blk_issue_rw_rq(mq, NULL);
-		if (req->cmd_flags & REQ_SECURE &&
-			!(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN))
+		if (req->cmd_flags & REQ_SECURE)
 			ret = mmc_blk_issue_secdiscard_rq(mq, req);
 		else
 			ret = mmc_blk_issue_discard_rq(mq, req);
@@ -2432,6 +2431,8 @@ static int mmc_blk_probe(struct mmc_card *card)
 	if (!(card->csd.cmdclass & CCC_BLOCK_READ))
 		return -ENODEV;
 
+	mmc_fixup_device(card, blk_fixups);
+
 	md = mmc_blk_alloc(card);
 	if (IS_ERR(md))
 		return PTR_ERR(md);
@@ -2446,7 +2447,6 @@ static int mmc_blk_probe(struct mmc_card *card)
 		goto out;
 
 	mmc_set_drvdata(card, md);
-	mmc_fixup_device(card, blk_fixups);
 
 	if (mmc_add_disk(md))
 		goto out;
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index d2dbf02022bd..8a1f1240e058 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -180,7 +180,6 @@ static int mmc_bus_resume(struct device *dev)
 #endif
 
 #ifdef CONFIG_PM_RUNTIME
-
 static int mmc_runtime_suspend(struct device *dev)
 {
 	struct mmc_card *card = mmc_dev_to_card(dev);
@@ -196,17 +195,10 @@ static int mmc_runtime_resume(struct device *dev)
 
 	return host->bus_ops->runtime_resume(host);
 }
-
-static int mmc_runtime_idle(struct device *dev)
-{
-	return 0;
-}
-
 #endif /* !CONFIG_PM_RUNTIME */
 
 static const struct dev_pm_ops mmc_bus_pm_ops = {
-	SET_RUNTIME_PM_OPS(mmc_runtime_suspend, mmc_runtime_resume,
-			mmc_runtime_idle)
+	SET_RUNTIME_PM_OPS(mmc_runtime_suspend, mmc_runtime_resume, NULL)
 	SET_SYSTEM_SLEEP_PM_OPS(mmc_bus_suspend, mmc_bus_resume)
 };
 
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 7dc0c85fdb60..d03a080fb9cd 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2102,7 +2102,8 @@ EXPORT_SYMBOL(mmc_can_sanitize);
 
 int mmc_can_secure_erase_trim(struct mmc_card *card)
 {
-	if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_ER_EN)
+	if ((card->ext_csd.sec_feature_support & EXT_CSD_SEC_ER_EN) &&
+	    !(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN))
 		return 1;
 	return 0;
 }
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 793c6f7ddb04..1eda8dd8c867 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -324,13 +324,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		}
 	}
 
+	/*
+	 * The EXT_CSD format is meant to be forward compatible. As long
+	 * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV
+	 * are authorized, see JEDEC JESD84-B50 section B.8.
+	 */
 	card->ext_csd.rev = ext_csd[EXT_CSD_REV];
-	if (card->ext_csd.rev > 7) {
-		pr_err("%s: unrecognised EXT_CSD revision %d\n",
-			mmc_hostname(card->host), card->ext_csd.rev);
-		err = -EINVAL;
-		goto out;
-	}
 
 	card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
 	card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
diff --git a/drivers/mmc/core/quirks.c b/drivers/mmc/core/quirks.c
index 6c36fccaa1ec..dd1d1e0fe322 100644
--- a/drivers/mmc/core/quirks.c
+++ b/drivers/mmc/core/quirks.c
@@ -91,7 +91,7 @@ void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
 		    (f->cis_device == card->cis.device ||
 		     f->cis_device == (u16) SDIO_ANY_ID) &&
 		    rev >= f->rev_start && rev <= f->rev_end) {
-			dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
+			dev_dbg(&card->dev, "calling %pf\n", f->vendor_fixup);
 			f->vendor_fixup(card, f->data);
 		}
 	}
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 274ef00b4463..48d0c93ba25a 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -184,6 +184,9 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 		mmc_delay(10);
 	}
 
+	if (!i)
+		pr_err("%s: card never left busy state\n", mmc_hostname(host));
+
 	if (rocr && !mmc_host_is_spi(host))
 		*rocr = cmd.resp[0];
 
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index a5652548230a..451135822464 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -290,6 +290,18 @@ config MMC_MOXART
 	  be found on some embedded hardware such as UC-7112-LX.
 	  If you have a controller with this interface, say Y here.
 
+config MMC_SDHCI_ST
+	tristate "SDHCI support on STMicroelectronics SoC"
+	depends on ARCH_STI
+	depends on MMC_SDHCI_PLTFM
+	select MMC_SDHCI_IO_ACCESSORS
+	help
+	  This selects the Secure Digital Host Controller Interface in
+	  STMicroelectronics SoCs.
+
+	  If you have a controller with this interface, say Y or M here.
+	  If unsure, say N.
+
 config MMC_OMAP
 	tristate "TI OMAP Multimedia Card Interface support"
 	depends on ARCH_OMAP
@@ -303,6 +315,7 @@ config MMC_OMAP
 
 config MMC_OMAP_HS
 	tristate "TI OMAP High Speed Multimedia Card Interface support"
+	depends on HAS_DMA
 	depends on ARCH_OMAP2PLUS || COMPILE_TEST
 	help
 	  This selects the TI OMAP High Speed Multimedia card Interface.
@@ -343,7 +356,7 @@ config MMC_ATMELMCI
 
 config MMC_SDHCI_MSM
 	tristate "Qualcomm SDHCI Controller Support"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || (ARM && COMPILE_TEST)
 	depends on MMC_SDHCI_PLTFM
 	help
 	  This selects the Secure Digital Host Controller Interface (SDHCI)
@@ -440,6 +453,7 @@ config MMC_SPI
 config MMC_S3C
 	tristate "Samsung S3C SD/MMC Card Interface support"
 	depends on ARCH_S3C24XX
+	depends on S3C24XX_DMAC
 	help
 	  This selects a driver for the MCI interface found in
           Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
@@ -477,15 +491,6 @@ config MMC_S3C_DMA
 	  working properly and needs to be debugged before this
 	  option is useful.
 
-config MMC_S3C_PIODMA
-	bool "Support for both PIO and DMA"
-	help
-	  Compile both the PIO and DMA transfer routines into the
-	  driver and let the platform select at run-time which one
-	  is best.
-
-	  See notes for the DMA option.
-
 endchoice
 
 config MMC_SDRICOH_CS
@@ -623,7 +628,7 @@ config MMC_DW_PCI
 
 config MMC_SH_MMCIF
 	tristate "SuperH Internal MMCIF support"
-	depends on MMC_BLOCK
+	depends on MMC_BLOCK && HAS_DMA
 	depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 	help
 	  This selects the MMC Host Interface controller (MMCIF).
@@ -697,6 +702,7 @@ config MMC_WMT
 
 config MMC_USDHI6ROL0
 	tristate "Renesas USDHI6ROL0 SD/SDIO Host Controller support"
+	depends on HAS_DMA
 	help
 	  This selects support for the Renesas USDHI6ROL0 SD/SDIO
 	  Host Controller
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 7f81ddf1dd2c..f211eede8db5 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_HLWD)		+= sdhci-of-hlwd.o
 obj-$(CONFIG_MMC_SDHCI_BCM_KONA)	+= sdhci-bcm-kona.o
 obj-$(CONFIG_MMC_SDHCI_BCM2835)		+= sdhci-bcm2835.o
 obj-$(CONFIG_MMC_SDHCI_MSM)		+= sdhci-msm.o
+obj-$(CONFIG_MMC_SDHCI_ST)		+= sdhci-st.o
 
 ifeq ($(CONFIG_CB710_DEBUG),y)
 	CFLAGS-cb710-mmc	+= -DDEBUG
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 1ac227c603b7..8f216edbdf08 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -111,8 +111,7 @@ static const u8 tuning_blk_pattern_8bit[] = {
 	0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
 };
 
-static inline bool dw_mci_fifo_reset(struct dw_mci *host);
-static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host);
+static bool dw_mci_reset(struct dw_mci *host);
 
 #if defined(CONFIG_DEBUG_FS)
 static int dw_mci_req_show(struct seq_file *s, void *v)
@@ -997,7 +996,8 @@ static int dw_mci_get_ro(struct mmc_host *mmc)
 	int gpio_ro = mmc_gpio_get_ro(mmc);
 
 	/* Use platform get_ro function, else try on board write protect */
-	if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT)
+	if ((slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) ||
+			(slot->host->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT))
 		read_only = 0;
 	else if (!IS_ERR_VALUE(gpio_ro))
 		read_only = gpio_ro;
@@ -1235,7 +1235,7 @@ static int dw_mci_data_complete(struct dw_mci *host, struct mmc_data *data)
 		 * After an error, there may be data lingering
 		 * in the FIFO
 		 */
-		dw_mci_fifo_reset(host);
+		dw_mci_reset(host);
 	} else {
 		data->bytes_xfered = data->blocks * data->blksz;
 		data->error = 0;
@@ -1352,7 +1352,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
 
 			/* CMD error in data command */
 			if (mrq->cmd->error && mrq->data)
-				dw_mci_fifo_reset(host);
+				dw_mci_reset(host);
 
 			host->cmd = NULL;
 			host->data = NULL;
@@ -1963,14 +1963,8 @@ static void dw_mci_work_routine_card(struct work_struct *work)
 			}
 
 			/* Power down slot */
-			if (present == 0) {
-				/* Clear down the FIFO */
-				dw_mci_fifo_reset(host);
-#ifdef CONFIG_MMC_DW_IDMAC
-				dw_mci_idmac_reset(host);
-#endif
-
-			}
+			if (present == 0)
+				dw_mci_reset(host);
 
 			spin_unlock_bh(&host->lock);
 
@@ -2021,8 +2015,11 @@ static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot)
 
 	/* get quirks */
 	for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++)
-		if (of_get_property(np, of_slot_quirks[idx].quirk, NULL))
+		if (of_get_property(np, of_slot_quirks[idx].quirk, NULL)) {
+			dev_warn(dev, "Slot quirk %s is deprecated\n",
+					of_slot_quirks[idx].quirk);
 			quirks |= of_slot_quirks[idx].id;
+		}
 
 	return quirks;
 }
@@ -2208,8 +2205,11 @@ static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
 	return false;
 }
 
-static inline bool dw_mci_fifo_reset(struct dw_mci *host)
+static bool dw_mci_reset(struct dw_mci *host)
 {
+	u32 flags = SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET;
+	bool ret = false;
+
 	/*
 	 * Reseting generates a block interrupt, hence setting
 	 * the scatter-gather pointer to NULL.
@@ -2219,15 +2219,60 @@ static inline bool dw_mci_fifo_reset(struct dw_mci *host)
 		host->sg = NULL;
 	}
 
-	return dw_mci_ctrl_reset(host, SDMMC_CTRL_FIFO_RESET);
-}
+	if (host->use_dma)
+		flags |= SDMMC_CTRL_DMA_RESET;
 
-static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host)
-{
-	return dw_mci_ctrl_reset(host,
-				 SDMMC_CTRL_FIFO_RESET |
-				 SDMMC_CTRL_RESET |
-				 SDMMC_CTRL_DMA_RESET);
+	if (dw_mci_ctrl_reset(host, flags)) {
+		/*
+		 * In all cases we clear the RAWINTS register to clear any
+		 * interrupts.
+		 */
+		mci_writel(host, RINTSTS, 0xFFFFFFFF);
+
+		/* if using dma we wait for dma_req to clear */
+		if (host->use_dma) {
+			unsigned long timeout = jiffies + msecs_to_jiffies(500);
+			u32 status;
+			do {
+				status = mci_readl(host, STATUS);
+				if (!(status & SDMMC_STATUS_DMA_REQ))
+					break;
+				cpu_relax();
+			} while (time_before(jiffies, timeout));
+
+			if (status & SDMMC_STATUS_DMA_REQ) {
+				dev_err(host->dev,
+					"%s: Timeout waiting for dma_req to "
+					"clear during reset\n", __func__);
+				goto ciu_out;
+			}
+
+			/* when using DMA next we reset the fifo again */
+			if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_FIFO_RESET))
+				goto ciu_out;
+		}
+	} else {
+		/* if the controller reset bit did clear, then set clock regs */
+		if (!(mci_readl(host, CTRL) & SDMMC_CTRL_RESET)) {
+			dev_err(host->dev, "%s: fifo/dma reset bits didn't "
+				"clear but ciu was reset, doing clock update\n",
+				__func__);
+			goto ciu_out;
+		}
+	}
+
+#if IS_ENABLED(CONFIG_MMC_DW_IDMAC)
+	/* It is also recommended that we reset and reprogram idmac */
+	dw_mci_idmac_reset(host);
+#endif
+
+	ret = true;
+
+ciu_out:
+	/* After a CTRL reset we need to have CIU set clock registers  */
+	mci_send_cmd(host->cur_slot, SDMMC_CMD_UPD_CLK, 0);
+
+	return ret;
 }
 
 #ifdef CONFIG_OF
@@ -2238,6 +2283,9 @@ static struct dw_mci_of_quirks {
 	{
 		.quirk	= "broken-cd",
 		.id	= DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
+	}, {
+		.quirk	= "disable-wp",
+		.id	= DW_MCI_QUIRK_NO_WRITE_PROTECT,
 	},
 };
 
@@ -2425,7 +2473,7 @@ int dw_mci_probe(struct dw_mci *host)
 	}
 
 	/* Reset all blocks */
-	if (!dw_mci_ctrl_all_reset(host))
+	if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_ALL_RESET_FLAGS))
 		return -ENODEV;
 
 	host->dma_ops = host->pdata->dma_ops;
@@ -2612,7 +2660,7 @@ int dw_mci_resume(struct dw_mci *host)
 		}
 	}
 
-	if (!dw_mci_ctrl_all_reset(host)) {
+	if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_ALL_RESET_FLAGS)) {
 		ret = -ENODEV;
 		return ret;
 	}
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 738fa241d058..08fd956d81f3 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -129,6 +129,7 @@
 #define SDMMC_CMD_INDX(n)		((n) & 0x1F)
 /* Status register defines */
 #define SDMMC_GET_FCNT(x)		(((x)>>17) & 0x1FFF)
+#define SDMMC_STATUS_DMA_REQ		BIT(31)
 /* FIFOTH register defines */
 #define SDMMC_SET_FIFOTH(m, r, t)	(((m) & 0x7) << 28 | \
 					 ((r) & 0xFFF) << 16 | \
@@ -150,6 +151,10 @@
 /* Card read threshold */
 #define SDMMC_SET_RD_THLD(v, x)		(((v) & 0x1FFF) << 16 | (x))
 
+/* All ctrl reset bits */
+#define SDMMC_CTRL_ALL_RESET_FLAGS \
+	(SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET)
+
 /* Register access macros */
 #define mci_readl(dev, reg)			\
 	__raw_readl((dev)->regs + SDMMC_##reg)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 7ad463e9741c..e4d470704150 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -52,34 +52,53 @@ static unsigned int fmax = 515633;
  * struct variant_data - MMCI variant-specific quirks
  * @clkreg: default value for MCICLOCK register
  * @clkreg_enable: enable value for MMCICLOCK register
+ * @clkreg_8bit_bus_enable: enable value for 8 bit bus
+ * @clkreg_neg_edge_enable: enable value for inverted data/cmd output
  * @datalength_bits: number of bits in the MMCIDATALENGTH register
  * @fifosize: number of bytes that can be written when MMCI_TXFIFOEMPTY
  *	      is asserted (likewise for RX)
  * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY
  *		  is asserted (likewise for RX)
+ * @data_cmd_enable: enable value for data commands.
  * @sdio: variant supports SDIO
  * @st_clkdiv: true if using a ST-specific clock divider algorithm
+ * @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
  * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
+ * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
+ *		     register
  * @pwrreg_powerup: power up value for MMCIPOWER register
+ * @f_max: maximum clk frequency supported by the controller.
  * @signal_direction: input/out direction of bus signals can be indicated
  * @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock
  * @busy_detect: true if busy detection on dat0 is supported
  * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply
+ * @explicit_mclk_control: enable explicit mclk control in driver.
+ * @qcom_fifo: enables qcom specific fifo pio read logic.
+ * @reversed_irq_handling: handle data irq before cmd irq.
  */
 struct variant_data {
 	unsigned int		clkreg;
 	unsigned int		clkreg_enable;
+	unsigned int		clkreg_8bit_bus_enable;
+	unsigned int		clkreg_neg_edge_enable;
 	unsigned int		datalength_bits;
 	unsigned int		fifosize;
 	unsigned int		fifohalfsize;
+	unsigned int		data_cmd_enable;
+	unsigned int		datactrl_mask_ddrmode;
 	bool			sdio;
 	bool			st_clkdiv;
 	bool			blksz_datactrl16;
+	bool			blksz_datactrl4;
 	u32			pwrreg_powerup;
+	u32			f_max;
 	bool			signal_direction;
 	bool			pwrreg_clkgate;
 	bool			busy_detect;
 	bool			pwrreg_nopower;
+	bool			explicit_mclk_control;
+	bool			qcom_fifo;
+	bool			reversed_irq_handling;
 };
 
 static struct variant_data variant_arm = {
@@ -87,6 +106,8 @@ static struct variant_data variant_arm = {
 	.fifohalfsize		= 8 * 4,
 	.datalength_bits	= 16,
 	.pwrreg_powerup		= MCI_PWR_UP,
+	.f_max			= 100000000,
+	.reversed_irq_handling	= true,
 };
 
 static struct variant_data variant_arm_extended_fifo = {
@@ -94,6 +115,7 @@ static struct variant_data variant_arm_extended_fifo = {
 	.fifohalfsize		= 64 * 4,
 	.datalength_bits	= 16,
 	.pwrreg_powerup		= MCI_PWR_UP,
+	.f_max			= 100000000,
 };
 
 static struct variant_data variant_arm_extended_fifo_hwfc = {
@@ -102,15 +124,18 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
 	.clkreg_enable		= MCI_ARM_HWFCEN,
 	.datalength_bits	= 16,
 	.pwrreg_powerup		= MCI_PWR_UP,
+	.f_max			= 100000000,
 };
 
 static struct variant_data variant_u300 = {
 	.fifosize		= 16 * 4,
 	.fifohalfsize		= 8 * 4,
 	.clkreg_enable		= MCI_ST_U300_HWFCEN,
+	.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
 	.datalength_bits	= 16,
 	.sdio			= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
+	.f_max			= 100000000,
 	.signal_direction	= true,
 	.pwrreg_clkgate		= true,
 	.pwrreg_nopower		= true,
@@ -124,6 +149,7 @@ static struct variant_data variant_nomadik = {
 	.sdio			= true,
 	.st_clkdiv		= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
+	.f_max			= 100000000,
 	.signal_direction	= true,
 	.pwrreg_clkgate		= true,
 	.pwrreg_nopower		= true,
@@ -134,10 +160,13 @@ static struct variant_data variant_ux500 = {
 	.fifohalfsize		= 8 * 4,
 	.clkreg			= MCI_CLK_ENABLE,
 	.clkreg_enable		= MCI_ST_UX500_HWFCEN,
+	.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
+	.clkreg_neg_edge_enable	= MCI_ST_UX500_NEG_EDGE,
 	.datalength_bits	= 24,
 	.sdio			= true,
 	.st_clkdiv		= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
+	.f_max			= 100000000,
 	.signal_direction	= true,
 	.pwrreg_clkgate		= true,
 	.busy_detect		= true,
@@ -149,17 +178,38 @@ static struct variant_data variant_ux500v2 = {
 	.fifohalfsize		= 8 * 4,
 	.clkreg			= MCI_CLK_ENABLE,
 	.clkreg_enable		= MCI_ST_UX500_HWFCEN,
+	.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
+	.clkreg_neg_edge_enable	= MCI_ST_UX500_NEG_EDGE,
+	.datactrl_mask_ddrmode	= MCI_ST_DPSM_DDRMODE,
 	.datalength_bits	= 24,
 	.sdio			= true,
 	.st_clkdiv		= true,
 	.blksz_datactrl16	= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
+	.f_max			= 100000000,
 	.signal_direction	= true,
 	.pwrreg_clkgate		= true,
 	.busy_detect		= true,
 	.pwrreg_nopower		= true,
 };
 
+static struct variant_data variant_qcom = {
+	.fifosize		= 16 * 4,
+	.fifohalfsize		= 8 * 4,
+	.clkreg			= MCI_CLK_ENABLE,
+	.clkreg_enable		= MCI_QCOM_CLK_FLOWENA |
+				  MCI_QCOM_CLK_SELECT_IN_FBCLK,
+	.clkreg_8bit_bus_enable = MCI_QCOM_CLK_WIDEBUS_8,
+	.datactrl_mask_ddrmode	= MCI_QCOM_CLK_SELECT_IN_DDR_MODE,
+	.data_cmd_enable	= MCI_QCOM_CSPM_DATCMD,
+	.blksz_datactrl4	= true,
+	.datalength_bits	= 24,
+	.pwrreg_powerup		= MCI_PWR_UP,
+	.f_max			= 208000000,
+	.explicit_mclk_control	= true,
+	.qcom_fifo		= true,
+};
+
 static int mmci_card_busy(struct mmc_host *mmc)
 {
 	struct mmci_host *host = mmc_priv(mmc);
@@ -260,7 +310,9 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
 	host->cclk = 0;
 
 	if (desired) {
-		if (desired >= host->mclk) {
+		if (variant->explicit_mclk_control) {
+			host->cclk = host->mclk;
+		} else if (desired >= host->mclk) {
 			clk = MCI_CLK_BYPASS;
 			if (variant->st_clkdiv)
 				clk |= MCI_ST_UX500_NEG_EDGE;
@@ -299,11 +351,11 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
 	if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_4)
 		clk |= MCI_4BIT_BUS;
 	if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8)
-		clk |= MCI_ST_8BIT_BUS;
+		clk |= variant->clkreg_8bit_bus_enable;
 
 	if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
 	    host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
-		clk |= MCI_ST_UX500_NEG_EDGE;
+		clk |= variant->clkreg_neg_edge_enable;
 
 	mmci_write_clkreg(host, clk);
 }
@@ -719,7 +771,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 	data->bytes_xfered = 0;
 
 	clks = (unsigned long long)data->timeout_ns * host->cclk;
-	do_div(clks, 1000000000UL);
+	do_div(clks, NSEC_PER_SEC);
 
 	timeout = data->timeout_clks + (unsigned int)clks;
 
@@ -732,6 +784,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 
 	if (variant->blksz_datactrl16)
 		datactrl = MCI_DPSM_ENABLE | (data->blksz << 16);
+	else if (variant->blksz_datactrl4)
+		datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);
 	else
 		datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
 
@@ -767,7 +821,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 
 	if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
 	    host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
-		datactrl |= MCI_ST_DPSM_DDRMODE;
+		datactrl |= variant->datactrl_mask_ddrmode;
 
 	/*
 	 * Attempt to use DMA operation mode, if this
@@ -812,7 +866,7 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
 
 	if (readl(base + MMCICOMMAND) & MCI_CPSM_ENABLE) {
 		writel(0, base + MMCICOMMAND);
-		udelay(1);
+		mmci_reg_delay(host);
 	}
 
 	c |= cmd->opcode | MCI_CPSM_ENABLE;
@@ -824,6 +878,9 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
 	if (/*interrupt*/0)
 		c |= MCI_CPSM_INTERRUPT;
 
+	if (mmc_cmd_type(cmd) == MMC_CMD_ADTC)
+		c |= host->variant->data_cmd_enable;
+
 	host->cmd = cmd;
 
 	writel(cmd->arg, base + MMCIARGUMENT);
@@ -834,6 +891,10 @@ static void
 mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
 	      unsigned int status)
 {
+	/* Make sure we have data to handle */
+	if (!data)
+		return;
+
 	/* First check for errors */
 	if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
 		      MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
@@ -902,9 +963,17 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
 	     unsigned int status)
 {
 	void __iomem *base = host->base;
-	bool sbc = (cmd == host->mrq->sbc);
-	bool busy_resp = host->variant->busy_detect &&
-			(cmd->flags & MMC_RSP_BUSY);
+	bool sbc, busy_resp;
+
+	if (!cmd)
+		return;
+
+	sbc = (cmd == host->mrq->sbc);
+	busy_resp = host->variant->busy_detect && (cmd->flags & MMC_RSP_BUSY);
+
+	if (!((status|host->busy_status) & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT|
+		MCI_CMDSENT|MCI_CMDRESPEND)))
+		return;
 
 	/* Check if we need to wait for busy completion. */
 	if (host->busy_status && (status & MCI_ST_CARDBUSY))
@@ -957,15 +1026,34 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
 	}
 }
 
+static int mmci_get_rx_fifocnt(struct mmci_host *host, u32 status, int remain)
+{
+	return remain - (readl(host->base + MMCIFIFOCNT) << 2);
+}
+
+static int mmci_qcom_get_rx_fifocnt(struct mmci_host *host, u32 status, int r)
+{
+	/*
+	 * on qcom SDCC4 only 8 words are used in each burst so only 8 addresses
+	 * from the fifo range should be used
+	 */
+	if (status & MCI_RXFIFOHALFFULL)
+		return host->variant->fifohalfsize;
+	else if (status & MCI_RXDATAAVLBL)
+		return 4;
+
+	return 0;
+}
+
 static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int remain)
 {
 	void __iomem *base = host->base;
 	char *ptr = buffer;
-	u32 status;
+	u32 status = readl(host->base + MMCISTATUS);
 	int host_remain = host->size;
 
 	do {
-		int count = host_remain - (readl(base + MMCIFIFOCNT) << 2);
+		int count = host->get_rx_fifocnt(host, status, host_remain);
 
 		if (count > remain)
 			count = remain;
@@ -1132,9 +1220,6 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
 	spin_lock(&host->lock);
 
 	do {
-		struct mmc_command *cmd;
-		struct mmc_data *data;
-
 		status = readl(host->base + MMCISTATUS);
 
 		if (host->singleirq) {
@@ -1154,16 +1239,13 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
 
 		dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status);
 
-		cmd = host->cmd;
-		if ((status|host->busy_status) & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT|
-			MCI_CMDSENT|MCI_CMDRESPEND) && cmd)
-			mmci_cmd_irq(host, cmd, status);
-
-		data = host->data;
-		if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
-			      MCI_TXUNDERRUN|MCI_RXOVERRUN|MCI_DATAEND|
-			      MCI_DATABLOCKEND) && data)
-			mmci_data_irq(host, data, status);
+		if (host->variant->reversed_irq_handling) {
+			mmci_data_irq(host, host->data, status);
+			mmci_cmd_irq(host, host->cmd, status);
+		} else {
+			mmci_cmd_irq(host, host->cmd, status);
+			mmci_data_irq(host, host->data, status);
+		}
 
 		/* Don't poll for busy completion in irq context. */
 		if (host->busy_status)
@@ -1296,6 +1378,17 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	if (!ios->clock && variant->pwrreg_clkgate)
 		pwr &= ~MCI_PWR_ON;
 
+	if (host->variant->explicit_mclk_control &&
+	    ios->clock != host->clock_cache) {
+		ret = clk_set_rate(host->clk, ios->clock);
+		if (ret < 0)
+			dev_err(mmc_dev(host->mmc),
+				"Error setting clock rate (%d)\n", ret);
+		else
+			host->mclk = clk_get_rate(host->clk);
+	}
+	host->clock_cache = ios->clock;
+
 	spin_lock_irqsave(&host->lock, flags);
 
 	mmci_set_clkreg(host, ios->clock);
@@ -1443,6 +1536,11 @@ static int mmci_probe(struct amba_device *dev,
 	if (ret)
 		goto host_free;
 
+	if (variant->qcom_fifo)
+		host->get_rx_fifocnt = mmci_qcom_get_rx_fifocnt;
+	else
+		host->get_rx_fifocnt = mmci_get_rx_fifocnt;
+
 	host->plat = plat;
 	host->variant = variant;
 	host->mclk = clk_get_rate(host->clk);
@@ -1451,8 +1549,8 @@ static int mmci_probe(struct amba_device *dev,
 	 * so we try to adjust the clock down to this,
 	 * (if possible).
 	 */
-	if (host->mclk > 100000000) {
-		ret = clk_set_rate(host->clk, 100000000);
+	if (host->mclk > variant->f_max) {
+		ret = clk_set_rate(host->clk, variant->f_max);
 		if (ret < 0)
 			goto clk_disable;
 		host->mclk = clk_get_rate(host->clk);
@@ -1471,9 +1569,12 @@ static int mmci_probe(struct amba_device *dev,
 	 * The ARM and ST versions of the block have slightly different
 	 * clock divider equations which means that the minimum divider
 	 * differs too.
+	 * on Qualcomm like controllers get the nearest minimum clock to 100Khz
 	 */
 	if (variant->st_clkdiv)
 		mmc->f_min = DIV_ROUND_UP(host->mclk, 257);
+	else if (variant->explicit_mclk_control)
+		mmc->f_min = clk_round_rate(host->clk, 100000);
 	else
 		mmc->f_min = DIV_ROUND_UP(host->mclk, 512);
 	/*
@@ -1483,9 +1584,14 @@ static int mmci_probe(struct amba_device *dev,
 	 * the block, of course.
 	 */
 	if (mmc->f_max)
-		mmc->f_max = min(host->mclk, mmc->f_max);
+		mmc->f_max = variant->explicit_mclk_control ?
+				min(variant->f_max, mmc->f_max) :
+				min(host->mclk, mmc->f_max);
 	else
-		mmc->f_max = min(host->mclk, fmax);
+		mmc->f_max = variant->explicit_mclk_control ?
+				fmax : min(host->mclk, fmax);
+
+
 	dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
 
 	/* Get regulators and the supported OCR mask */
@@ -1752,6 +1858,12 @@ static struct amba_id mmci_ids[] = {
 		.mask   = 0xf0ffffff,
 		.data	= &variant_ux500v2,
 	},
+	/* Qualcomm variants */
+	{
+		.id     = 0x00051180,
+		.mask	= 0x000fffff,
+		.data	= &variant_qcom,
+	},
 	{ 0, 0 },
 };
 
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 347d942d740b..a1f5e4f49e2a 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -41,6 +41,15 @@
 /* Modified PL180 on Versatile Express platform */
 #define MCI_ARM_HWFCEN		(1 << 12)
 
+/* Modified on Qualcomm Integrations */
+#define MCI_QCOM_CLK_WIDEBUS_8	(BIT(10) | BIT(11))
+#define MCI_QCOM_CLK_FLOWENA	BIT(12)
+#define MCI_QCOM_CLK_INVERTOUT	BIT(13)
+
+/* select in latch data and command in */
+#define MCI_QCOM_CLK_SELECT_IN_FBCLK	BIT(15)
+#define MCI_QCOM_CLK_SELECT_IN_DDR_MODE	(BIT(14) | BIT(15))
+
 #define MMCIARGUMENT		0x008
 #define MMCICOMMAND		0x00c
 #define MCI_CPSM_RESPONSE	(1 << 6)
@@ -54,6 +63,14 @@
 #define MCI_ST_NIEN		(1 << 13)
 #define MCI_ST_CE_ATACMD	(1 << 14)
 
+/* Modified on Qualcomm Integrations */
+#define MCI_QCOM_CSPM_DATCMD		BIT(12)
+#define MCI_QCOM_CSPM_MCIABORT		BIT(13)
+#define MCI_QCOM_CSPM_CCSENABLE		BIT(14)
+#define MCI_QCOM_CSPM_CCSDISABLE	BIT(15)
+#define MCI_QCOM_CSPM_AUTO_CMD19	BIT(16)
+#define MCI_QCOM_CSPM_AUTO_CMD21	BIT(21)
+
 #define MMCIRESPCMD		0x010
 #define MMCIRESPONSE0		0x014
 #define MMCIRESPONSE1		0x018
@@ -191,6 +208,8 @@ struct mmci_host {
 	spinlock_t		lock;
 
 	unsigned int		mclk;
+	/* cached value of requested clk in set_ios */
+	unsigned int		clock_cache;
 	unsigned int		cclk;
 	u32			pwr_reg;
 	u32			pwr_reg_add;
@@ -210,6 +229,7 @@ struct mmci_host {
 	/* pio stuff */
 	struct sg_mapping_iter	sg_miter;
 	unsigned int		size;
+	int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
 
 #ifdef CONFIG_DMA_ENGINE
 	/* DMA stuff */
diff --git a/drivers/mmc/host/moxart-mmc.c b/drivers/mmc/host/moxart-mmc.c
index 74924a04026e..b4b1efbf6c16 100644
--- a/drivers/mmc/host/moxart-mmc.c
+++ b/drivers/mmc/host/moxart-mmc.c
@@ -13,7 +13,6 @@
  * warranty of any kind, whether express or implied.
  */
 
-#include <linux/version.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index babfea03ba8a..140885a5a4e7 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -86,7 +86,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
 	if (ret >= 0)
 		return ret;
 
-	present = !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
+	present = mmc->caps & MMC_CAP_NEEDS_POLL ||
+		!(readl(ssp->base + HW_SSP_STATUS(ssp)) &
 			BM_SSP_STATUS_CARD_DETECT);
 
 	if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 6b7b75585926..965672663ef0 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -29,6 +29,7 @@
 #include <linux/timer.h>
 #include <linux/clk.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
 #include <linux/of_gpio.h>
 #include <linux/of_device.h>
 #include <linux/omap-dmaengine.h>
@@ -36,6 +37,7 @@
 #include <linux/mmc/core.h>
 #include <linux/mmc/mmc.h>
 #include <linux/io.h>
+#include <linux/irq.h>
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/pinctrl/consumer.h>
@@ -54,6 +56,7 @@
 #define OMAP_HSMMC_RSP54	0x0118
 #define OMAP_HSMMC_RSP76	0x011C
 #define OMAP_HSMMC_DATA		0x0120
+#define OMAP_HSMMC_PSTATE	0x0124
 #define OMAP_HSMMC_HCTL		0x0128
 #define OMAP_HSMMC_SYSCTL	0x012C
 #define OMAP_HSMMC_STAT		0x0130
@@ -91,7 +94,10 @@
 #define BCE			(1 << 1)
 #define FOUR_BIT		(1 << 1)
 #define HSPE			(1 << 2)
+#define IWE			(1 << 24)
 #define DDR			(1 << 19)
+#define CLKEXTFREE		(1 << 16)
+#define CTPL			(1 << 11)
 #define DW8			(1 << 5)
 #define OD			0x1
 #define STAT_CLEAR		0xFFFFFFFF
@@ -101,11 +107,15 @@
 #define SRD			(1 << 26)
 #define SOFTRESET		(1 << 1)
 
+/* PSTATE */
+#define DLEV_DAT(x)		(1 << (20 + (x)))
+
 /* Interrupt masks for IE and ISE register */
 #define CC_EN			(1 << 0)
 #define TC_EN			(1 << 1)
 #define BWR_EN			(1 << 4)
 #define BRR_EN			(1 << 5)
+#define CIRQ_EN			(1 << 8)
 #define ERR_EN			(1 << 15)
 #define CTO_EN			(1 << 16)
 #define CCRC_EN			(1 << 17)
@@ -140,7 +150,6 @@
 #define VDD_3V0			3000000		/* 300000 uV */
 #define VDD_165_195		(ffs(MMC_VDD_165_195) - 1)
 
-#define AUTO_CMD23		(1 << 1)	/* Auto CMD23 support */
 /*
  * One controller can have multiple slots, like on some omap boards using
  * omap.c controller driver. Luckily this is not currently done on any known
@@ -194,6 +203,7 @@ struct omap_hsmmc_host {
 	u32			sysctl;
 	u32			capa;
 	int			irq;
+	int			wake_irq;
 	int			use_dma, dma_ch;
 	struct dma_chan		*tx_chan;
 	struct dma_chan		*rx_chan;
@@ -206,6 +216,9 @@ struct omap_hsmmc_host {
 	int			req_in_progress;
 	unsigned long		clk_rate;
 	unsigned int		flags;
+#define AUTO_CMD23		(1 << 0)        /* Auto CMD23 support */
+#define HSMMC_SDIO_IRQ_ENABLED	(1 << 1)        /* SDIO irq enabled */
+#define HSMMC_WAKE_IRQ_ENABLED	(1 << 2)
 	struct omap_hsmmc_next	next_data;
 	struct	omap_mmc_platform_data	*pdata;
 };
@@ -510,27 +523,40 @@ static void omap_hsmmc_stop_clock(struct omap_hsmmc_host *host)
 static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host,
 				  struct mmc_command *cmd)
 {
-	unsigned int irq_mask;
+	u32 irq_mask = INT_EN_MASK;
+	unsigned long flags;
 
 	if (host->use_dma)
-		irq_mask = INT_EN_MASK & ~(BRR_EN | BWR_EN);
-	else
-		irq_mask = INT_EN_MASK;
+		irq_mask &= ~(BRR_EN | BWR_EN);
 
 	/* Disable timeout for erases */
 	if (cmd->opcode == MMC_ERASE)
 		irq_mask &= ~DTO_EN;
 
+	spin_lock_irqsave(&host->irq_lock, flags);
 	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
 	OMAP_HSMMC_WRITE(host->base, ISE, irq_mask);
+
+	/* latch pending CIRQ, but don't signal MMC core */
+	if (host->flags & HSMMC_SDIO_IRQ_ENABLED)
+		irq_mask |= CIRQ_EN;
 	OMAP_HSMMC_WRITE(host->base, IE, irq_mask);
+	spin_unlock_irqrestore(&host->irq_lock, flags);
 }
 
 static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host)
 {
-	OMAP_HSMMC_WRITE(host->base, ISE, 0);
-	OMAP_HSMMC_WRITE(host->base, IE, 0);
+	u32 irq_mask = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&host->irq_lock, flags);
+	/* no transfer running but need to keep cirq if enabled */
+	if (host->flags & HSMMC_SDIO_IRQ_ENABLED)
+		irq_mask |= CIRQ_EN;
+	OMAP_HSMMC_WRITE(host->base, ISE, irq_mask);
+	OMAP_HSMMC_WRITE(host->base, IE, irq_mask);
 	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+	spin_unlock_irqrestore(&host->irq_lock, flags);
 }
 
 /* Calculate divisor for the given clock frequency */
@@ -667,6 +693,9 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
 		capa = VS18;
 	}
 
+	if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
+		hctl |= IWE;
+
 	OMAP_HSMMC_WRITE(host->base, HCTL,
 			OMAP_HSMMC_READ(host->base, HCTL) | hctl);
 
@@ -681,7 +710,9 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
 		&& time_before(jiffies, timeout))
 		;
 
-	omap_hsmmc_disable_irq(host);
+	OMAP_HSMMC_WRITE(host->base, ISE, 0);
+	OMAP_HSMMC_WRITE(host->base, IE, 0);
+	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
 
 	/* Do not initialize card-specific things if the power is off */
 	if (host->power_mode == MMC_POWER_OFF)
@@ -1118,8 +1149,12 @@ static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id)
 	int status;
 
 	status = OMAP_HSMMC_READ(host->base, STAT);
-	while (status & INT_EN_MASK && host->req_in_progress) {
-		omap_hsmmc_do_irq(host, status);
+	while (status & (INT_EN_MASK | CIRQ_EN)) {
+		if (host->req_in_progress)
+			omap_hsmmc_do_irq(host, status);
+
+		if (status & CIRQ_EN)
+			mmc_signal_sdio_irq(host->mmc);
 
 		/* Flush posted write */
 		status = OMAP_HSMMC_READ(host->base, STAT);
@@ -1128,6 +1163,22 @@ static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static irqreturn_t omap_hsmmc_wake_irq(int irq, void *dev_id)
+{
+	struct omap_hsmmc_host *host = dev_id;
+
+	/* cirq is level triggered, disable to avoid infinite loop */
+	spin_lock(&host->irq_lock);
+	if (host->flags & HSMMC_WAKE_IRQ_ENABLED) {
+		disable_irq_nosync(host->wake_irq);
+		host->flags &= ~HSMMC_WAKE_IRQ_ENABLED;
+	}
+	spin_unlock(&host->irq_lock);
+	pm_request_resume(host->dev); /* no use counter */
+
+	return IRQ_HANDLED;
+}
+
 static void set_sd_bus_power(struct omap_hsmmc_host *host)
 {
 	unsigned long i;
@@ -1639,6 +1690,103 @@ static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card)
 		mmc_slot(host).init_card(card);
 }
 
+static void omap_hsmmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+	struct omap_hsmmc_host *host = mmc_priv(mmc);
+	u32 irq_mask, con;
+	unsigned long flags;
+
+	spin_lock_irqsave(&host->irq_lock, flags);
+
+	con = OMAP_HSMMC_READ(host->base, CON);
+	irq_mask = OMAP_HSMMC_READ(host->base, ISE);
+	if (enable) {
+		host->flags |= HSMMC_SDIO_IRQ_ENABLED;
+		irq_mask |= CIRQ_EN;
+		con |= CTPL | CLKEXTFREE;
+	} else {
+		host->flags &= ~HSMMC_SDIO_IRQ_ENABLED;
+		irq_mask &= ~CIRQ_EN;
+		con &= ~(CTPL | CLKEXTFREE);
+	}
+	OMAP_HSMMC_WRITE(host->base, CON, con);
+	OMAP_HSMMC_WRITE(host->base, IE, irq_mask);
+
+	/*
+	 * if enable, piggy back detection on current request
+	 * but always disable immediately
+	 */
+	if (!host->req_in_progress || !enable)
+		OMAP_HSMMC_WRITE(host->base, ISE, irq_mask);
+
+	/* flush posted write */
+	OMAP_HSMMC_READ(host->base, IE);
+
+	spin_unlock_irqrestore(&host->irq_lock, flags);
+}
+
+static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
+{
+	struct mmc_host *mmc = host->mmc;
+	int ret;
+
+	/*
+	 * For omaps with wake-up path, wakeirq will be irq from pinctrl and
+	 * for other omaps, wakeirq will be from GPIO (dat line remuxed to
+	 * gpio). wakeirq is needed to detect sdio irq in runtime suspend state
+	 * with functional clock disabled.
+	 */
+	if (!host->dev->of_node || !host->wake_irq)
+		return -ENODEV;
+
+	/* Prevent auto-enabling of IRQ */
+	irq_set_status_flags(host->wake_irq, IRQ_NOAUTOEN);
+	ret = devm_request_irq(host->dev, host->wake_irq, omap_hsmmc_wake_irq,
+			       IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+			       mmc_hostname(mmc), host);
+	if (ret) {
+		dev_err(mmc_dev(host->mmc), "Unable to request wake IRQ\n");
+		goto err;
+	}
+
+	/*
+	 * Some omaps don't have wake-up path from deeper idle states
+	 * and need to remux SDIO DAT1 to GPIO for wake-up from idle.
+	 */
+	if (host->pdata->controller_flags & OMAP_HSMMC_SWAKEUP_MISSING) {
+		struct pinctrl *p = devm_pinctrl_get(host->dev);
+		if (!p) {
+			ret = -ENODEV;
+			goto err_free_irq;
+		}
+		if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_DEFAULT))) {
+			dev_info(host->dev, "missing default pinctrl state\n");
+			devm_pinctrl_put(p);
+			ret = -EINVAL;
+			goto err_free_irq;
+		}
+
+		if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_IDLE))) {
+			dev_info(host->dev, "missing idle pinctrl state\n");
+			devm_pinctrl_put(p);
+			ret = -EINVAL;
+			goto err_free_irq;
+		}
+		devm_pinctrl_put(p);
+	}
+
+	OMAP_HSMMC_WRITE(host->base, HCTL,
+			 OMAP_HSMMC_READ(host->base, HCTL) | IWE);
+	return 0;
+
+err_free_irq:
+	devm_free_irq(host->dev, host->wake_irq, host);
+err:
+	dev_warn(host->dev, "no SDIO IRQ support, falling back to polling\n");
+	host->wake_irq = 0;
+	return ret;
+}
+
 static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host)
 {
 	u32 hctl, capa, value;
@@ -1691,7 +1839,7 @@ static const struct mmc_host_ops omap_hsmmc_ops = {
 	.get_cd = omap_hsmmc_get_cd,
 	.get_ro = omap_hsmmc_get_ro,
 	.init_card = omap_hsmmc_init_card,
-	/* NYET -- enable_sdio_irq */
+	.enable_sdio_irq = omap_hsmmc_enable_sdio_irq,
 };
 
 #ifdef CONFIG_DEBUG_FS
@@ -1701,13 +1849,23 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data)
 	struct mmc_host *mmc = s->private;
 	struct omap_hsmmc_host *host = mmc_priv(mmc);
 
-	seq_printf(s, "mmc%d:\n ctx_loss:\t%d\n\nregs:\n",
-			mmc->index, host->context_loss);
+	seq_printf(s, "mmc%d:\n", mmc->index);
+	seq_printf(s, "sdio irq mode\t%s\n",
+		   (mmc->caps & MMC_CAP_SDIO_IRQ) ? "interrupt" : "polling");
 
-	pm_runtime_get_sync(host->dev);
+	if (mmc->caps & MMC_CAP_SDIO_IRQ) {
+		seq_printf(s, "sdio irq \t%s\n",
+			   (host->flags & HSMMC_SDIO_IRQ_ENABLED) ?  "enabled"
+			   : "disabled");
+	}
+	seq_printf(s, "ctx_loss:\t%d\n", host->context_loss);
 
+	pm_runtime_get_sync(host->dev);
+	seq_puts(s, "\nregs:\n");
 	seq_printf(s, "CON:\t\t0x%08x\n",
 			OMAP_HSMMC_READ(host->base, CON));
+	seq_printf(s, "PSTATE:\t\t0x%08x\n",
+		   OMAP_HSMMC_READ(host->base, PSTATE));
 	seq_printf(s, "HCTL:\t\t0x%08x\n",
 			OMAP_HSMMC_READ(host->base, HCTL));
 	seq_printf(s, "SYSCTL:\t\t0x%08x\n",
@@ -1761,6 +1919,10 @@ static const struct omap_mmc_of_data omap3_pre_es3_mmc_of_data = {
 static const struct omap_mmc_of_data omap4_mmc_of_data = {
 	.reg_offset = 0x100,
 };
+static const struct omap_mmc_of_data am33xx_mmc_of_data = {
+	.reg_offset = 0x100,
+	.controller_flags = OMAP_HSMMC_SWAKEUP_MISSING,
+};
 
 static const struct of_device_id omap_mmc_of_match[] = {
 	{
@@ -1777,6 +1939,10 @@ static const struct of_device_id omap_mmc_of_match[] = {
 		.compatible = "ti,omap4-hsmmc",
 		.data = &omap4_mmc_of_data,
 	},
+	{
+		.compatible = "ti,am33xx-hsmmc",
+		.data = &am33xx_mmc_of_data,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, omap_mmc_of_match);
@@ -1850,7 +2016,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
 	const struct of_device_id *match;
 	dma_cap_mask_t mask;
 	unsigned tx_req, rx_req;
-	struct pinctrl *pinctrl;
 	const struct omap_mmc_of_data *data;
 	void __iomem *base;
 
@@ -1913,6 +2078,9 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, host);
 
+	if (pdev->dev.of_node)
+		host->wake_irq = irq_of_parse_and_map(pdev->dev.of_node, 1);
+
 	mmc->ops	= &omap_hsmmc_ops;
 
 	mmc->f_min = OMAP_MMC_MIN_CLOCK;
@@ -2061,10 +2229,17 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
 
 	omap_hsmmc_disable_irq(host);
 
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl))
-		dev_warn(&pdev->dev,
-			"pins are not configured from the driver\n");
+	/*
+	 * For now, only support SDIO interrupt if we have a separate
+	 * wake-up interrupt configured from device tree. This is because
+	 * the wake-up interrupt is needed for idle state and some
+	 * platforms need special quirks. And we don't want to add new
+	 * legacy mux platform init code callbacks any longer as we
+	 * are moving to DT based booting anyways.
+	 */
+	ret = omap_hsmmc_configure_wake_irq(host);
+	if (!ret)
+		mmc->caps |= MMC_CAP_SDIO_IRQ;
 
 	omap_hsmmc_protect_card(host);
 
@@ -2170,11 +2345,18 @@ static int omap_hsmmc_suspend(struct device *dev)
 	pm_runtime_get_sync(host->dev);
 
 	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) {
-		omap_hsmmc_disable_irq(host);
+		OMAP_HSMMC_WRITE(host->base, ISE, 0);
+		OMAP_HSMMC_WRITE(host->base, IE, 0);
+		OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
 		OMAP_HSMMC_WRITE(host->base, HCTL,
 				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
 	}
 
+	/* do not wake up due to sdio irq */
+	if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
+	    !(host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ))
+		disable_irq(host->wake_irq);
+
 	if (host->dbclk)
 		clk_disable_unprepare(host->dbclk);
 
@@ -2200,6 +2382,10 @@ static int omap_hsmmc_resume(struct device *dev)
 
 	omap_hsmmc_protect_card(host);
 
+	if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
+	    !(host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ))
+		enable_irq(host->wake_irq);
+
 	pm_runtime_mark_last_busy(host->dev);
 	pm_runtime_put_autosuspend(host->dev);
 	return 0;
@@ -2215,22 +2401,77 @@ static int omap_hsmmc_resume(struct device *dev)
 static int omap_hsmmc_runtime_suspend(struct device *dev)
 {
 	struct omap_hsmmc_host *host;
+	unsigned long flags;
+	int ret = 0;
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_save(host);
 	dev_dbg(dev, "disabled\n");
 
-	return 0;
+	spin_lock_irqsave(&host->irq_lock, flags);
+	if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
+	    (host->flags & HSMMC_SDIO_IRQ_ENABLED)) {
+		/* disable sdio irq handling to prevent race */
+		OMAP_HSMMC_WRITE(host->base, ISE, 0);
+		OMAP_HSMMC_WRITE(host->base, IE, 0);
+
+		if (!(OMAP_HSMMC_READ(host->base, PSTATE) & DLEV_DAT(1))) {
+			/*
+			 * dat1 line low, pending sdio irq
+			 * race condition: possible irq handler running on
+			 * multi-core, abort
+			 */
+			dev_dbg(dev, "pending sdio irq, abort suspend\n");
+			OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+			OMAP_HSMMC_WRITE(host->base, ISE, CIRQ_EN);
+			OMAP_HSMMC_WRITE(host->base, IE, CIRQ_EN);
+			pm_runtime_mark_last_busy(dev);
+			ret = -EBUSY;
+			goto abort;
+		}
+
+		pinctrl_pm_select_idle_state(dev);
+
+		WARN_ON(host->flags & HSMMC_WAKE_IRQ_ENABLED);
+		enable_irq(host->wake_irq);
+		host->flags |= HSMMC_WAKE_IRQ_ENABLED;
+	} else {
+		pinctrl_pm_select_idle_state(dev);
+	}
+
+abort:
+	spin_unlock_irqrestore(&host->irq_lock, flags);
+	return ret;
 }
 
 static int omap_hsmmc_runtime_resume(struct device *dev)
 {
 	struct omap_hsmmc_host *host;
+	unsigned long flags;
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_restore(host);
 	dev_dbg(dev, "enabled\n");
 
+	spin_lock_irqsave(&host->irq_lock, flags);
+	if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
+	    (host->flags & HSMMC_SDIO_IRQ_ENABLED)) {
+		/* sdio irq flag can't change while in runtime suspend */
+		if (host->flags & HSMMC_WAKE_IRQ_ENABLED) {
+			disable_irq_nosync(host->wake_irq);
+			host->flags &= ~HSMMC_WAKE_IRQ_ENABLED;
+		}
+
+		pinctrl_pm_select_default_state(host->dev);
+
+		/* irq lost, if pinmux incorrect */
+		OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+		OMAP_HSMMC_WRITE(host->base, ISE, CIRQ_EN);
+		OMAP_HSMMC_WRITE(host->base, IE, CIRQ_EN);
+	} else {
+		pinctrl_pm_select_default_state(host->dev);
+	}
+	spin_unlock_irqrestore(&host->irq_lock, flags);
 	return 0;
 }
 
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index f23782683a7c..e5516a226362 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
 #include <linux/mmc/host.h>
@@ -27,6 +28,7 @@
 #include <mach/dma.h>
 #include <mach/gpio-samsung.h>
 
+#include <linux/platform_data/dma-s3c24xx.h>
 #include <linux/platform_data/mmc-s3cmci.h>
 
 #include "s3cmci.h"
@@ -140,10 +142,6 @@ static const int dbgmap_debug = dbg_err | dbg_debug;
 		dev_dbg(&host->pdev->dev, args);  \
 	} while (0)
 
-static struct s3c2410_dma_client s3cmci_dma_client = {
-	.name		= "s3c-mci",
-};
-
 static void finalize_request(struct s3cmci_host *host);
 static void s3cmci_send_request(struct mmc_host *mmc);
 static void s3cmci_reset(struct s3cmci_host *host);
@@ -256,25 +254,8 @@ static inline bool s3cmci_host_usedma(struct s3cmci_host *host)
 {
 #ifdef CONFIG_MMC_S3C_PIO
 	return false;
-#elif defined(CONFIG_MMC_S3C_DMA)
+#else /* CONFIG_MMC_S3C_DMA */
 	return true;
-#else
-	return host->dodma;
-#endif
-}
-
-/**
- * s3cmci_host_canpio - return true if host has pio code available
- *
- * Return true if the driver has been compiled with the PIO support code
- * available.
- */
-static inline bool s3cmci_host_canpio(void)
-{
-#ifdef CONFIG_MMC_S3C_PIO
-	return true;
-#else
-	return false;
 #endif
 }
 
@@ -841,60 +822,24 @@ static irqreturn_t s3cmci_irq_cd(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void s3cmci_dma_done_callback(struct s3c2410_dma_chan *dma_ch,
-				     void *buf_id, int size,
-				     enum s3c2410_dma_buffresult result)
+static void s3cmci_dma_done_callback(void *arg)
 {
-	struct s3cmci_host *host = buf_id;
+	struct s3cmci_host *host = arg;
 	unsigned long iflags;
-	u32 mci_csta, mci_dsta, mci_fsta, mci_dcnt;
-
-	mci_csta = readl(host->base + S3C2410_SDICMDSTAT);
-	mci_dsta = readl(host->base + S3C2410_SDIDSTA);
-	mci_fsta = readl(host->base + S3C2410_SDIFSTA);
-	mci_dcnt = readl(host->base + S3C2410_SDIDCNT);
 
 	BUG_ON(!host->mrq);
 	BUG_ON(!host->mrq->data);
-	BUG_ON(!host->dmatogo);
 
 	spin_lock_irqsave(&host->complete_lock, iflags);
 
-	if (result != S3C2410_RES_OK) {
-		dbg(host, dbg_fail, "DMA FAILED: csta=0x%08x dsta=0x%08x "
-			"fsta=0x%08x dcnt:0x%08x result:0x%08x toGo:%u\n",
-			mci_csta, mci_dsta, mci_fsta,
-			mci_dcnt, result, host->dmatogo);
-
-		goto fail_request;
-	}
-
-	host->dmatogo--;
-	if (host->dmatogo) {
-		dbg(host, dbg_dma, "DMA DONE  Size:%i DSTA:[%08x] "
-			"DCNT:[%08x] toGo:%u\n",
-			size, mci_dsta, mci_dcnt, host->dmatogo);
-
-		goto out;
-	}
-
-	dbg(host, dbg_dma, "DMA FINISHED Size:%i DSTA:%08x DCNT:%08x\n",
-		size, mci_dsta, mci_dcnt);
+	dbg(host, dbg_dma, "DMA FINISHED\n");
 
 	host->dma_complete = 1;
 	host->complete_what = COMPLETION_FINALIZE;
 
-out:
 	tasklet_schedule(&host->pio_tasklet);
 	spin_unlock_irqrestore(&host->complete_lock, iflags);
-	return;
 
-fail_request:
-	host->mrq->data->error = -EINVAL;
-	host->complete_what = COMPLETION_FINALIZE;
-	clear_imask(host);
-
-	goto out;
 }
 
 static void finalize_request(struct s3cmci_host *host)
@@ -966,7 +911,7 @@ static void finalize_request(struct s3cmci_host *host)
 	 * DMA channel and the fifo to clear out any garbage. */
 	if (mrq->data->error != 0) {
 		if (s3cmci_host_usedma(host))
-			s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
+			dmaengine_terminate_all(host->dma);
 
 		if (host->is2440) {
 			/* Clear failure register and reset fifo. */
@@ -992,29 +937,6 @@ request_done:
 	mmc_request_done(host->mmc, mrq);
 }
 
-static void s3cmci_dma_setup(struct s3cmci_host *host,
-			     enum dma_data_direction source)
-{
-	static enum dma_data_direction last_source = -1;
-	static int setup_ok;
-
-	if (last_source == source)
-		return;
-
-	last_source = source;
-
-	s3c2410_dma_devconfig(host->dma, source,
-			      host->mem->start + host->sdidata);
-
-	if (!setup_ok) {
-		s3c2410_dma_config(host->dma, 4);
-		s3c2410_dma_set_buffdone_fn(host->dma,
-					    s3cmci_dma_done_callback);
-		s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART);
-		setup_ok = 1;
-	}
-}
-
 static void s3cmci_send_command(struct s3cmci_host *host,
 					struct mmc_command *cmd)
 {
@@ -1162,43 +1084,45 @@ static int s3cmci_prepare_pio(struct s3cmci_host *host, struct mmc_data *data)
 
 static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data)
 {
-	int dma_len, i;
 	int rw = data->flags & MMC_DATA_WRITE;
+	struct dma_async_tx_descriptor *desc;
+	struct dma_slave_config conf = {
+		.src_addr = host->mem->start + host->sdidata,
+		.dst_addr = host->mem->start + host->sdidata,
+		.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+		.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+	};
 
 	BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR);
 
-	s3cmci_dma_setup(host, rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-	s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
-
-	dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
-			     rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
-	if (dma_len == 0)
-		return -ENOMEM;
-
-	host->dma_complete = 0;
-	host->dmatogo = dma_len;
-
-	for (i = 0; i < dma_len; i++) {
-		int res;
-
-		dbg(host, dbg_dma, "enqueue %i: %08x@%u\n", i,
-		    sg_dma_address(&data->sg[i]),
-		    sg_dma_len(&data->sg[i]));
+	/* Restore prescaler value */
+	writel(host->prescaler, host->base + S3C2410_SDIPRE);
 
-		res = s3c2410_dma_enqueue(host->dma, host,
-					  sg_dma_address(&data->sg[i]),
-					  sg_dma_len(&data->sg[i]));
+	if (!rw)
+		conf.direction = DMA_DEV_TO_MEM;
+	else
+		conf.direction = DMA_MEM_TO_DEV;
 
-		if (res) {
-			s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
-			return -EBUSY;
-		}
-	}
+	dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+			     rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 
-	s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_START);
+	dmaengine_slave_config(host->dma, &conf);
+	desc = dmaengine_prep_slave_sg(host->dma, data->sg, data->sg_len,
+		conf.direction,
+		DMA_CTRL_ACK | DMA_PREP_INTERRUPT);
+	if (!desc)
+		goto unmap_exit;
+	desc->callback = s3cmci_dma_done_callback;
+	desc->callback_param = host;
+	dmaengine_submit(desc);
+	dma_async_issue_pending(host->dma);
 
 	return 0;
+
+unmap_exit:
+	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+			     rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	return -ENOMEM;
 }
 
 static void s3cmci_send_request(struct mmc_host *mmc)
@@ -1676,10 +1600,6 @@ static int s3cmci_probe(struct platform_device *pdev)
 	host->complete_what 	= COMPLETION_NONE;
 	host->pio_active 	= XFER_NONE;
 
-#ifdef CONFIG_MMC_S3C_PIODMA
-	host->dodma		= host->pdata->use_dma;
-#endif
-
 	host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!host->mem) {
 		dev_err(&pdev->dev,
@@ -1765,17 +1685,17 @@ static int s3cmci_probe(struct platform_device *pdev)
 	/* depending on the dma state, get a dma channel to use. */
 
 	if (s3cmci_host_usedma(host)) {
-		host->dma = s3c2410_dma_request(DMACH_SDI, &s3cmci_dma_client,
-						host);
-		if (host->dma < 0) {
+		dma_cap_mask_t mask;
+
+		dma_cap_zero(mask);
+		dma_cap_set(DMA_SLAVE, mask);
+
+		host->dma = dma_request_slave_channel_compat(mask,
+			s3c24xx_dma_filter, (void *)DMACH_SDI, &pdev->dev, "rx-tx");
+		if (!host->dma) {
 			dev_err(&pdev->dev, "cannot get DMA channel.\n");
-			if (!s3cmci_host_canpio()) {
-				ret = -EBUSY;
-				goto probe_free_gpio_wp;
-			} else {
-				dev_warn(&pdev->dev, "falling back to PIO.\n");
-				host->dodma = 0;
-			}
+			ret = -EBUSY;
+			goto probe_free_gpio_wp;
 		}
 	}
 
@@ -1787,7 +1707,7 @@ static int s3cmci_probe(struct platform_device *pdev)
 		goto probe_free_dma;
 	}
 
-	ret = clk_enable(host->clk);
+	ret = clk_prepare_enable(host->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to enable clock source.\n");
 		goto clk_free;
@@ -1816,7 +1736,7 @@ static int s3cmci_probe(struct platform_device *pdev)
 	mmc->max_segs		= 128;
 
 	dbg(host, dbg_debug,
-	    "probe: mode:%s mapped mci_base:%p irq:%u irq_cd:%u dma:%u.\n",
+	    "probe: mode:%s mapped mci_base:%p irq:%u irq_cd:%u dma:%p.\n",
 	    (host->is2440?"2440":""),
 	    host->base, host->irq, host->irq_cd, host->dma);
 
@@ -1845,14 +1765,14 @@ static int s3cmci_probe(struct platform_device *pdev)
 	s3cmci_cpufreq_deregister(host);
 
  free_dmabuf:
-	clk_disable(host->clk);
+	clk_disable_unprepare(host->clk);
 
  clk_free:
 	clk_put(host->clk);
 
  probe_free_dma:
 	if (s3cmci_host_usedma(host))
-		s3c2410_dma_free(host->dma, &s3cmci_dma_client);
+		dma_release_channel(host->dma);
 
  probe_free_gpio_wp:
 	if (!host->pdata->no_wprotect)
@@ -1897,7 +1817,7 @@ static void s3cmci_shutdown(struct platform_device *pdev)
 	s3cmci_debugfs_remove(host);
 	s3cmci_cpufreq_deregister(host);
 	mmc_remove_host(mmc);
-	clk_disable(host->clk);
+	clk_disable_unprepare(host->clk);
 }
 
 static int s3cmci_remove(struct platform_device *pdev)
@@ -1914,7 +1834,7 @@ static int s3cmci_remove(struct platform_device *pdev)
 	tasklet_disable(&host->pio_tasklet);
 
 	if (s3cmci_host_usedma(host))
-		s3c2410_dma_free(host->dma, &s3cmci_dma_client);
+		dma_release_channel(host->dma);
 
 	free_irq(host->irq, host);
 
diff --git a/drivers/mmc/host/s3cmci.h b/drivers/mmc/host/s3cmci.h
index c76b53dbeb61..cc2e46cb5c64 100644
--- a/drivers/mmc/host/s3cmci.h
+++ b/drivers/mmc/host/s3cmci.h
@@ -26,7 +26,7 @@ struct s3cmci_host {
 	void __iomem		*base;
 	int			irq;
 	int			irq_cd;
-	int			dma;
+	struct dma_chan		*dma;
 
 	unsigned long		clk_rate;
 	unsigned long		clk_div;
@@ -36,8 +36,6 @@ struct s3cmci_host {
 	int			is2440;
 	unsigned		sdiimsk;
 	unsigned		sdidata;
-	int			dodma;
-	int			dmatogo;
 
 	bool			irq_disabled;
 	bool			irq_enabled;
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 8ce3c28cb76e..8c5337002c51 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -124,9 +124,11 @@ static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
 
 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
 	.chip    = &sdhci_acpi_chip_int,
-	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | MMC_CAP_HW_RESET,
+	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
+		   MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR,
 	.caps2   = MMC_CAP2_HC_ERASE_SZ,
 	.flags   = SDHCI_ACPI_RUNTIME_PM,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 40573a58486a..1a6661ed6205 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -16,7 +16,6 @@
 
 #include <linux/module.h>
 #include <linux/of_device.h>
-#include <linux/regulator/consumer.h>
 #include <linux/delay.h>
 #include <linux/mmc/mmc.h>
 #include <linux/slab.h>
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 52c42fcc284c..c3a1debc9289 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -103,6 +103,10 @@ static const struct sdhci_pci_fixes sdhci_cafe = {
 			  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
 };
 
+static const struct sdhci_pci_fixes sdhci_intel_qrk = {
+	.quirks		= SDHCI_QUIRK_NO_HISPD_BIT,
+};
+
 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
 {
 	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
@@ -264,7 +268,7 @@ static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
 	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
-				 MMC_CAP_HW_RESET;
+				 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR;
 	slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
 	slot->hw_reset = sdhci_pci_int_hw_reset;
 	return 0;
@@ -279,6 +283,7 @@ static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_emmc_probe_slot,
+	.quirks2	= SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
@@ -753,6 +758,14 @@ static const struct pci_device_id pci_ids[] = {
 
 	{
 		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_QRK_SD,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_qrk,
+	},
+
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
 		.device		= PCI_DEVICE_ID_INTEL_MRST_SD0,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
@@ -1130,18 +1143,13 @@ static int sdhci_pci_suspend(struct device *dev)
 			goto err_pci_suspend;
 	}
 
-	pci_save_state(pdev);
 	if (pm_flags & MMC_PM_KEEP_POWER) {
-		if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
-			pci_pme_active(pdev, true);
-			pci_enable_wake(pdev, PCI_D3hot, 1);
-		}
-		pci_set_power_state(pdev, PCI_D3hot);
-	} else {
-		pci_enable_wake(pdev, PCI_D3hot, 0);
-		pci_disable_device(pdev);
-		pci_set_power_state(pdev, PCI_D3hot);
-	}
+		if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
+			device_init_wakeup(dev, true);
+		else
+			device_init_wakeup(dev, false);
+	} else
+		device_init_wakeup(dev, false);
 
 	return 0;
 
@@ -1162,12 +1170,6 @@ static int sdhci_pci_resume(struct device *dev)
 	if (!chip)
 		return 0;
 
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
-	ret = pci_enable_device(pdev);
-	if (ret)
-		return ret;
-
 	if (chip->fixes && chip->fixes->resume) {
 		ret = chip->fixes->resume(chip);
 		if (ret)
diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h
index 6d718719659e..c101477ef3be 100644
--- a/drivers/mmc/host/sdhci-pci.h
+++ b/drivers/mmc/host/sdhci-pci.h
@@ -17,6 +17,7 @@
 #define PCI_DEVICE_ID_INTEL_CLV_SDIO2	0x08fb
 #define PCI_DEVICE_ID_INTEL_CLV_EMMC0	0x08e5
 #define PCI_DEVICE_ID_INTEL_CLV_EMMC1	0x08e6
+#define PCI_DEVICE_ID_INTEL_QRK_SD	0x08A7
 
 /*
  * PCI registers
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index f4f128947561..6f842fb8e6b8 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -288,15 +288,13 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 	int ret;
 	struct clk *clk;
 
-	pxa = kzalloc(sizeof(struct sdhci_pxa), GFP_KERNEL);
+	pxa = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_pxa), GFP_KERNEL);
 	if (!pxa)
 		return -ENOMEM;
 
 	host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata, 0);
-	if (IS_ERR(host)) {
-		kfree(pxa);
+	if (IS_ERR(host))
 		return PTR_ERR(host);
-	}
 
 	if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
 		ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
@@ -308,7 +306,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 	pltfm_host = sdhci_priv(host);
 	pltfm_host->priv = pxa;
 
-	clk = clk_get(dev, NULL);
+	clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(clk)) {
 		dev_err(dev, "failed to get io clock\n");
 		ret = PTR_ERR(clk);
@@ -389,11 +387,9 @@ err_add_host:
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	clk_disable_unprepare(clk);
-	clk_put(clk);
 err_clk_get:
 err_mbus_win:
 	sdhci_pltfm_free(pdev);
-	kfree(pxa);
 	return ret;
 }
 
@@ -401,17 +397,14 @@ static int sdhci_pxav3_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct sdhci_pxa *pxa = pltfm_host->priv;
 
 	pm_runtime_get_sync(&pdev->dev);
 	sdhci_remove_host(host, 1);
 	pm_runtime_disable(&pdev->dev);
 
 	clk_disable_unprepare(pltfm_host->clk);
-	clk_put(pltfm_host->clk);
 
 	sdhci_pltfm_free(pdev);
-	kfree(pxa);
 
 	return 0;
 }
diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c
new file mode 100644
index 000000000000..328f348c7243
--- /dev/null
+++ b/drivers/mmc/host/sdhci-st.c
@@ -0,0 +1,176 @@
+/*
+ * Support for SDHCI on STMicroelectronics SoCs
+ *
+ * Copyright (C) 2014 STMicroelectronics Ltd
+ * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
+ * Contributors: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Based on sdhci-cns3xxx.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/mmc/host.h>
+
+#include "sdhci-pltfm.h"
+
+static u32 sdhci_st_readl(struct sdhci_host *host, int reg)
+{
+	u32 ret;
+
+	switch (reg) {
+	case SDHCI_CAPABILITIES:
+		ret = readl_relaxed(host->ioaddr + reg);
+		/* Support 3.3V and 1.8V */
+		ret &= ~SDHCI_CAN_VDD_300;
+		break;
+	default:
+		ret = readl_relaxed(host->ioaddr + reg);
+	}
+	return ret;
+}
+
+static const struct sdhci_ops sdhci_st_ops = {
+	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
+	.set_clock = sdhci_set_clock,
+	.set_bus_width = sdhci_set_bus_width,
+	.read_l = sdhci_st_readl,
+	.reset = sdhci_reset,
+};
+
+static const struct sdhci_pltfm_data sdhci_st_pdata = {
+	.ops = &sdhci_st_ops,
+	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
+	    SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
+};
+
+
+static int sdhci_st_probe(struct platform_device *pdev)
+{
+	struct sdhci_host *host;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct clk *clk;
+	int ret = 0;
+	u16 host_version;
+
+	clk =  devm_clk_get(&pdev->dev, "mmc");
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev, "Peripheral clk not found\n");
+		return PTR_ERR(clk);
+	}
+
+	host = sdhci_pltfm_init(pdev, &sdhci_st_pdata, 0);
+	if (IS_ERR(host)) {
+		dev_err(&pdev->dev, "Failed sdhci_pltfm_init\n");
+		return PTR_ERR(host);
+	}
+
+	ret = mmc_of_parse(host->mmc);
+
+	if (ret) {
+		dev_err(&pdev->dev, "Failed mmc_of_parse\n");
+		return ret;
+	}
+
+	clk_prepare_enable(clk);
+
+	pltfm_host = sdhci_priv(host);
+	pltfm_host->clk = clk;
+
+	ret = sdhci_add_host(host);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed sdhci_add_host\n");
+		goto err_out;
+	}
+
+	platform_set_drvdata(pdev, host);
+
+	host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
+
+	dev_info(&pdev->dev, "SDHCI ST Initialised: Host Version: 0x%x Vendor Version 0x%x\n",
+		((host_version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT),
+		((host_version & SDHCI_VENDOR_VER_MASK) >>
+		SDHCI_VENDOR_VER_SHIFT));
+
+	return 0;
+
+err_out:
+	clk_disable_unprepare(clk);
+	sdhci_pltfm_free(pdev);
+
+	return ret;
+}
+
+static int sdhci_st_remove(struct platform_device *pdev)
+{
+	struct sdhci_host *host = platform_get_drvdata(pdev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	clk_disable_unprepare(pltfm_host->clk);
+
+	return sdhci_pltfm_unregister(pdev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_st_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	int ret = sdhci_suspend_host(host);
+
+	if (ret)
+		goto out;
+
+	clk_disable_unprepare(pltfm_host->clk);
+out:
+	return ret;
+}
+
+static int sdhci_st_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	clk_prepare_enable(pltfm_host->clk);
+
+	return sdhci_resume_host(host);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_st_pmops, sdhci_st_suspend, sdhci_st_resume);
+
+static const struct of_device_id st_sdhci_match[] = {
+	{ .compatible = "st,sdhci" },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, st_sdhci_match);
+
+static struct platform_driver sdhci_st_driver = {
+	.probe = sdhci_st_probe,
+	.remove = sdhci_st_remove,
+	.driver = {
+		   .name = "sdhci-st",
+		   .pm = &sdhci_st_pmops,
+		   .of_match_table = of_match_ptr(st_sdhci_match),
+		  },
+};
+
+module_platform_driver(sdhci_st_driver);
+
+MODULE_DESCRIPTION("SDHCI driver for STMicroelectronics SoCs");
+MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:st-sdhci");
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index d93a063a36f3..33100d10d176 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -26,8 +26,6 @@
 #include <linux/mmc/host.h>
 #include <linux/mmc/slot-gpio.h>
 
-#include <asm/gpio.h>
-
 #include "sdhci-pltfm.h"
 
 /* Tegra SDHOST controller vendor register definitions */
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 47055f3f01b8..37b2a9ae52ef 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1223,8 +1223,16 @@ EXPORT_SYMBOL_GPL(sdhci_set_clock);
 static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
 			    unsigned short vdd)
 {
+	struct mmc_host *mmc = host->mmc;
 	u8 pwr = 0;
 
+	if (!IS_ERR(mmc->supply.vmmc)) {
+		spin_unlock_irq(&host->lock);
+		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
+		spin_lock_irq(&host->lock);
+		return;
+	}
+
 	if (mode != MMC_POWER_OFF) {
 		switch (1 << vdd) {
 		case MMC_VDD_165_195:
@@ -1283,12 +1291,6 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
 		if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
 			mdelay(10);
 	}
-
-	if (host->vmmc) {
-		spin_unlock_irq(&host->lock);
-		mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd);
-		spin_lock_irq(&host->lock);
-	}
 }
 
 /*****************************************************************************\
@@ -1440,13 +1442,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 {
 	unsigned long flags;
 	u8 ctrl;
+	struct mmc_host *mmc = host->mmc;
 
 	spin_lock_irqsave(&host->lock, flags);
 
 	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);
+		if (!IS_ERR(mmc->supply.vmmc) &&
+		    ios->power_mode == MMC_POWER_OFF)
+			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
 		return;
 	}
 
@@ -1530,7 +1534,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 			host->ops->set_clock(host, host->clock);
 		}
 
-
 		/* Reset SD Clock Enable */
 		clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
 		clk &= ~SDHCI_CLOCK_CARD_EN;
@@ -1707,6 +1710,7 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
 						struct mmc_ios *ios)
 {
+	struct mmc_host *mmc = host->mmc;
 	u16 ctrl;
 	int ret;
 
@@ -1725,11 +1729,12 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
 		ctrl &= ~SDHCI_CTRL_VDD_180;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
-		if (host->vqmmc) {
-			ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
+		if (!IS_ERR(mmc->supply.vqmmc)) {
+			ret = regulator_set_voltage(mmc->supply.vqmmc, 2700000,
+						    3600000);
 			if (ret) {
 				pr_warning("%s: Switching to 3.3V signalling voltage "
-						" failed\n", mmc_hostname(host->mmc));
+						" failed\n", mmc_hostname(mmc));
 				return -EIO;
 			}
 		}
@@ -1742,16 +1747,16 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
 			return 0;
 
 		pr_warning("%s: 3.3V regulator output did not became stable\n",
-				mmc_hostname(host->mmc));
+				mmc_hostname(mmc));
 
 		return -EAGAIN;
 	case MMC_SIGNAL_VOLTAGE_180:
-		if (host->vqmmc) {
-			ret = regulator_set_voltage(host->vqmmc,
+		if (!IS_ERR(mmc->supply.vqmmc)) {
+			ret = regulator_set_voltage(mmc->supply.vqmmc,
 					1700000, 1950000);
 			if (ret) {
 				pr_warning("%s: Switching to 1.8V signalling voltage "
-						" failed\n", mmc_hostname(host->mmc));
+						" failed\n", mmc_hostname(mmc));
 				return -EIO;
 			}
 		}
@@ -1763,24 +1768,22 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
 		ctrl |= SDHCI_CTRL_VDD_180;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
-		/* Wait for 5ms */
-		usleep_range(5000, 5500);
-
 		/* 1.8V regulator output should be stable within 5 ms */
 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 		if (ctrl & SDHCI_CTRL_VDD_180)
 			return 0;
 
 		pr_warning("%s: 1.8V regulator output did not became stable\n",
-				mmc_hostname(host->mmc));
+				mmc_hostname(mmc));
 
 		return -EAGAIN;
 	case MMC_SIGNAL_VOLTAGE_120:
-		if (host->vqmmc) {
-			ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000);
+		if (!IS_ERR(mmc->supply.vqmmc)) {
+			ret = regulator_set_voltage(mmc->supply.vqmmc, 1100000,
+						    1300000);
 			if (ret) {
 				pr_warning("%s: Switching to 1.2V signalling voltage "
-						" failed\n", mmc_hostname(host->mmc));
+						" failed\n", mmc_hostname(mmc));
 				return -EIO;
 			}
 		}
@@ -2643,7 +2646,6 @@ static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
 int sdhci_runtime_suspend_host(struct sdhci_host *host)
 {
 	unsigned long flags;
-	int ret = 0;
 
 	/* Disable tuning since we are suspending */
 	if (host->flags & SDHCI_USING_RETUNING_TIMER) {
@@ -2663,14 +2665,14 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host)
 	host->runtime_suspended = true;
 	spin_unlock_irqrestore(&host->lock, flags);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(sdhci_runtime_suspend_host);
 
 int sdhci_runtime_resume_host(struct sdhci_host *host)
 {
 	unsigned long flags;
-	int ret = 0, host_flags = host->flags;
+	int host_flags = host->flags;
 
 	if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
 		if (host->ops->enable_dma)
@@ -2709,7 +2711,7 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
 
 	spin_unlock_irqrestore(&host->lock, flags);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(sdhci_runtime_resume_host);
 
@@ -2820,12 +2822,12 @@ int sdhci_add_host(struct sdhci_host *host)
 		 * (128) and potentially one alignment transfer for
 		 * each of those entries.
 		 */
-		host->adma_desc = dma_alloc_coherent(mmc_dev(host->mmc),
+		host->adma_desc = dma_alloc_coherent(mmc_dev(mmc),
 						     ADMA_SIZE, &host->adma_addr,
 						     GFP_KERNEL);
 		host->align_buffer = kmalloc(128 * 4, GFP_KERNEL);
 		if (!host->adma_desc || !host->align_buffer) {
-			dma_free_coherent(mmc_dev(host->mmc), ADMA_SIZE,
+			dma_free_coherent(mmc_dev(mmc), ADMA_SIZE,
 					  host->adma_desc, host->adma_addr);
 			kfree(host->align_buffer);
 			pr_warning("%s: Unable to allocate ADMA "
@@ -2838,7 +2840,7 @@ int sdhci_add_host(struct sdhci_host *host)
 			pr_warning("%s: unable to allocate aligned ADMA descriptor\n",
 				   mmc_hostname(mmc));
 			host->flags &= ~SDHCI_USE_ADMA;
-			dma_free_coherent(mmc_dev(host->mmc), ADMA_SIZE,
+			dma_free_coherent(mmc_dev(mmc), ADMA_SIZE,
 					  host->adma_desc, host->adma_addr);
 			kfree(host->align_buffer);
 			host->adma_desc = NULL;
@@ -2853,7 +2855,7 @@ int sdhci_add_host(struct sdhci_host *host)
 	 */
 	if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) {
 		host->dma_mask = DMA_BIT_MASK(64);
-		mmc_dev(host->mmc)->dma_mask = &host->dma_mask;
+		mmc_dev(mmc)->dma_mask = &host->dma_mask;
 	}
 
 	if (host->version >= SDHCI_SPEC_300)
@@ -2959,28 +2961,25 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 
 	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
-	    !(host->mmc->caps & MMC_CAP_NONREMOVABLE))
+	    !(mmc->caps & MMC_CAP_NONREMOVABLE))
 		mmc->caps |= MMC_CAP_NEEDS_POLL;
 
+	/* If there are external regulators, get them */
+	if (mmc_regulator_get_supply(mmc) == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+
 	/* If vqmmc regulator and no 1.8V signalling, then there's no UHS */
-	host->vqmmc = regulator_get_optional(mmc_dev(mmc), "vqmmc");
-	if (IS_ERR_OR_NULL(host->vqmmc)) {
-		if (PTR_ERR(host->vqmmc) < 0) {
-			pr_info("%s: no vqmmc regulator found\n",
-				mmc_hostname(mmc));
-			host->vqmmc = NULL;
-		}
-	} else {
-		ret = regulator_enable(host->vqmmc);
-		if (!regulator_is_supported_voltage(host->vqmmc, 1700000,
-			1950000))
+	if (!IS_ERR(mmc->supply.vqmmc)) {
+		ret = regulator_enable(mmc->supply.vqmmc);
+		if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 1700000,
+						    1950000))
 			caps[1] &= ~(SDHCI_SUPPORT_SDR104 |
 					SDHCI_SUPPORT_SDR50 |
 					SDHCI_SUPPORT_DDR50);
 		if (ret) {
 			pr_warn("%s: Failed to enable vqmmc regulator: %d\n",
 				mmc_hostname(mmc), ret);
-			host->vqmmc = NULL;
+			mmc->supply.vqmmc = NULL;
 		}
 	}
 
@@ -3041,34 +3040,6 @@ int sdhci_add_host(struct sdhci_host *host)
 
 	ocr_avail = 0;
 
-	host->vmmc = regulator_get_optional(mmc_dev(mmc), "vmmc");
-	if (IS_ERR_OR_NULL(host->vmmc)) {
-		if (PTR_ERR(host->vmmc) < 0) {
-			pr_info("%s: no vmmc regulator found\n",
-				mmc_hostname(mmc));
-			host->vmmc = NULL;
-		}
-	}
-
-#ifdef CONFIG_REGULATOR
-	/*
-	 * Voltage range check makes sense only if regulator reports
-	 * any voltage value.
-	 */
-	if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) {
-		ret = regulator_is_supported_voltage(host->vmmc, 2700000,
-			3600000);
-		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
-			caps[0] &= ~SDHCI_CAN_VDD_330;
-		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300)))
-			caps[0] &= ~SDHCI_CAN_VDD_300;
-		ret = regulator_is_supported_voltage(host->vmmc, 1700000,
-			1950000);
-		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180)))
-			caps[0] &= ~SDHCI_CAN_VDD_180;
-	}
-#endif /* CONFIG_REGULATOR */
-
 	/*
 	 * According to SD Host Controller spec v3.00, if the Host System
 	 * can afford more than 150mA, Host Driver should set XPC to 1. Also
@@ -3077,8 +3048,8 @@ int sdhci_add_host(struct sdhci_host *host)
 	 * value.
 	 */
 	max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);
-	if (!max_current_caps && host->vmmc) {
-		u32 curr = regulator_get_current_limit(host->vmmc);
+	if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) {
+		u32 curr = regulator_get_current_limit(mmc->supply.vmmc);
 		if (curr > 0) {
 
 			/* convert to SDHCI_MAX_CURRENT format */
@@ -3118,8 +3089,12 @@ int sdhci_add_host(struct sdhci_host *host)
 				   SDHCI_MAX_CURRENT_MULTIPLIER;
 	}
 
+	/* If OCR set by external regulators, use it instead */
+	if (mmc->ocr_avail)
+		ocr_avail = mmc->ocr_avail;
+
 	if (host->ocr_mask)
-		ocr_avail = host->ocr_mask;
+		ocr_avail &= host->ocr_mask;
 
 	mmc->ocr_avail = ocr_avail;
 	mmc->ocr_avail_sdio = ocr_avail;
@@ -3273,6 +3248,7 @@ EXPORT_SYMBOL_GPL(sdhci_add_host);
 
 void sdhci_remove_host(struct sdhci_host *host, int dead)
 {
+	struct mmc_host *mmc = host->mmc;
 	unsigned long flags;
 
 	if (dead) {
@@ -3282,7 +3258,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 
 		if (host->mrq) {
 			pr_err("%s: Controller removed during "
-				" transfer!\n", mmc_hostname(host->mmc));
+				" transfer!\n", mmc_hostname(mmc));
 
 			host->mrq->cmd->error = -ENOMEDIUM;
 			tasklet_schedule(&host->finish_tasklet);
@@ -3293,7 +3269,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 
 	sdhci_disable_card_detection(host);
 
-	mmc_remove_host(host->mmc);
+	mmc_remove_host(mmc);
 
 #ifdef SDHCI_USE_LEDS_CLASS
 	led_classdev_unregister(&host->led);
@@ -3310,18 +3286,14 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 
 	tasklet_kill(&host->finish_tasklet);
 
-	if (host->vmmc) {
-		regulator_disable(host->vmmc);
-		regulator_put(host->vmmc);
-	}
+	if (!IS_ERR(mmc->supply.vmmc))
+		regulator_disable(mmc->supply.vmmc);
 
-	if (host->vqmmc) {
-		regulator_disable(host->vqmmc);
-		regulator_put(host->vqmmc);
-	}
+	if (!IS_ERR(mmc->supply.vqmmc))
+		regulator_disable(mmc->supply.vqmmc);
 
 	if (host->adma_desc)
-		dma_free_coherent(mmc_dev(host->mmc), ADMA_SIZE,
+		dma_free_coherent(mmc_dev(mmc), ADMA_SIZE,
 				  host->adma_desc, host->adma_addr);
 	kfree(host->align_buffer);
 
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 656fbba4c422..d11708c815d7 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -386,7 +386,7 @@ sh_mmcif_request_dma_one(struct sh_mmcif_host *host,
 			 struct sh_mmcif_plat_data *pdata,
 			 enum dma_transfer_direction direction)
 {
-	struct dma_slave_config cfg;
+	struct dma_slave_config cfg = { 0, };
 	struct dma_chan *chan;
 	unsigned int slave_id;
 	struct resource *res;
@@ -417,8 +417,15 @@ sh_mmcif_request_dma_one(struct sh_mmcif_host *host,
 	/* In the OF case the driver will get the slave ID from the DT */
 	cfg.slave_id = slave_id;
 	cfg.direction = direction;
-	cfg.dst_addr = res->start + MMCIF_CE_DATA;
-	cfg.src_addr = 0;
+
+	if (direction == DMA_DEV_TO_MEM) {
+		cfg.src_addr = res->start + MMCIF_CE_DATA;
+		cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	} else {
+		cfg.dst_addr = res->start + MMCIF_CE_DATA;
+		cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	}
+
 	ret = dmaengine_slave_config(chan, &cfg);
 	if (ret < 0) {
 		dma_release_channel(chan);
@@ -1378,26 +1385,19 @@ static int sh_mmcif_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "Get irq error\n");
 		return -ENXIO;
 	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "platform_get_resource error.\n");
-		return -ENXIO;
-	}
-	reg = ioremap(res->start, resource_size(res));
-	if (!reg) {
-		dev_err(&pdev->dev, "ioremap error.\n");
-		return -ENOMEM;
-	}
+	reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
 
 	mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
-	if (!mmc) {
-		ret = -ENOMEM;
-		goto ealloch;
-	}
+	if (!mmc)
+		return -ENOMEM;
 
 	ret = mmc_of_parse(mmc);
 	if (ret < 0)
-		goto eofparse;
+		goto err_host;
 
 	host		= mmc_priv(mmc);
 	host->mmc	= mmc;
@@ -1427,19 +1427,19 @@ static int sh_mmcif_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	host->power = false;
 
-	host->hclk = clk_get(&pdev->dev, NULL);
+	host->hclk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(host->hclk)) {
 		ret = PTR_ERR(host->hclk);
 		dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
-		goto eclkget;
+		goto err_pm;
 	}
 	ret = sh_mmcif_clk_update(host);
 	if (ret < 0)
-		goto eclkupdate;
+		goto err_pm;
 
 	ret = pm_runtime_resume(&pdev->dev);
 	if (ret < 0)
-		goto eresume;
+		goto err_clk;
 
 	INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
 
@@ -1447,65 +1447,55 @@ static int sh_mmcif_probe(struct platform_device *pdev)
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
 
 	name = irq[1] < 0 ? dev_name(&pdev->dev) : "sh_mmc:error";
-	ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, name, host);
+	ret = devm_request_threaded_irq(&pdev->dev, irq[0], sh_mmcif_intr,
+					sh_mmcif_irqt, 0, name, host);
 	if (ret) {
 		dev_err(&pdev->dev, "request_irq error (%s)\n", name);
-		goto ereqirq0;
+		goto err_clk;
 	}
 	if (irq[1] >= 0) {
-		ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt,
-					   0, "sh_mmc:int", host);
+		ret = devm_request_threaded_irq(&pdev->dev, irq[1],
+						sh_mmcif_intr, sh_mmcif_irqt,
+						0, "sh_mmc:int", host);
 		if (ret) {
 			dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
-			goto ereqirq1;
+			goto err_clk;
 		}
 	}
 
 	if (pd && pd->use_cd_gpio) {
 		ret = mmc_gpio_request_cd(mmc, pd->cd_gpio, 0);
 		if (ret < 0)
-			goto erqcd;
+			goto err_clk;
 	}
 
 	mutex_init(&host->thread_lock);
 
-	clk_disable_unprepare(host->hclk);
 	ret = mmc_add_host(mmc);
 	if (ret < 0)
-		goto emmcaddh;
+		goto err_clk;
 
 	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);
+	dev_info(&pdev->dev, "Chip version 0x%04x, clock rate %luMHz\n",
+		 sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0xffff,
+		 clk_get_rate(host->hclk) / 1000000UL);
+
+	clk_disable_unprepare(host->hclk);
 	return ret;
 
-emmcaddh:
-erqcd:
-	if (irq[1] >= 0)
-		free_irq(irq[1], host);
-ereqirq1:
-	free_irq(irq[0], host);
-ereqirq0:
-	pm_runtime_suspend(&pdev->dev);
-eresume:
+err_clk:
 	clk_disable_unprepare(host->hclk);
-eclkupdate:
-	clk_put(host->hclk);
-eclkget:
+err_pm:
 	pm_runtime_disable(&pdev->dev);
-eofparse:
+err_host:
 	mmc_free_host(mmc);
-ealloch:
-	iounmap(reg);
 	return ret;
 }
 
 static int sh_mmcif_remove(struct platform_device *pdev)
 {
 	struct sh_mmcif_host *host = platform_get_drvdata(pdev);
-	int irq[2];
 
 	host->dying = true;
 	clk_prepare_enable(host->hclk);
@@ -1523,16 +1513,6 @@ static int sh_mmcif_remove(struct platform_device *pdev)
 	 */
 	cancel_delayed_work_sync(&host->timeout_work);
 
-	if (host->addr)
-		iounmap(host->addr);
-
-	irq[0] = platform_get_irq(pdev, 0);
-	irq[1] = platform_get_irq(pdev, 1);
-
-	free_irq(irq[0], host);
-	if (irq[1] >= 0)
-		free_irq(irq[1], host);
-
 	clk_disable_unprepare(host->hclk);
 	mmc_free_host(host->mmc);
 	pm_runtime_put_sync(&pdev->dev);
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 03e7b280cb4c..eb8f1d5c34b1 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -294,6 +294,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
 			cfg.slave_id = pdata->dma->slave_id_tx;
 		cfg.direction = DMA_MEM_TO_DEV;
 		cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->pdata->bus_shift);
+		cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 		cfg.src_addr = 0;
 		ret = dmaengine_slave_config(host->chan_tx, &cfg);
 		if (ret < 0)
@@ -312,6 +313,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
 			cfg.slave_id = pdata->dma->slave_id_rx;
 		cfg.direction = DMA_DEV_TO_MEM;
 		cfg.src_addr = cfg.dst_addr;
+		cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 		cfg.dst_addr = 0;
 		ret = dmaengine_slave_config(host->chan_rx, &cfg);
 		if (ret < 0)
diff --git a/drivers/mmc/host/wmt-sdmmc.c b/drivers/mmc/host/wmt-sdmmc.c
index 282891a8e451..54181b4f6e9e 100644
--- a/drivers/mmc/host/wmt-sdmmc.c
+++ b/drivers/mmc/host/wmt-sdmmc.c
@@ -72,7 +72,6 @@
 #define BM_SPI_CS			0x20
 #define BM_SD_POWER			0x40
 #define BM_SOFT_RESET			0x80
-#define BM_ONEBIT_MASK			0xFD
 
 /* SDMMC_BLKLEN bit fields */
 #define BLKL_CRCERR_ABORT		0x0800
@@ -120,6 +119,8 @@
 #define STS2_DATARSP_BUSY		0x20
 #define STS2_DIS_FORCECLK		0x80
 
+/* SDMMC_EXTCTRL bit fields */
+#define EXT_EIGHTBIT			0x04
 
 /* MMC/SD DMA Controller Registers */
 #define SDDMA_GCR			0x100
@@ -672,7 +673,7 @@ static void wmt_mci_request(struct mmc_host *mmc, struct mmc_request *req)
 static void wmt_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct wmt_mci_priv *priv;
-	u32 reg_tmp;
+	u32 busmode, extctrl;
 
 	priv = mmc_priv(mmc);
 
@@ -687,28 +688,26 @@ static void wmt_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	if (ios->clock != 0)
 		clk_set_rate(priv->clk_sdmmc, ios->clock);
 
+	busmode = readb(priv->sdmmc_base + SDMMC_BUSMODE);
+	extctrl = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
+
+	busmode &= ~(BM_EIGHTBIT_MODE | BM_FOURBIT_MODE);
+	extctrl &= ~EXT_EIGHTBIT;
+
 	switch (ios->bus_width) {
 	case MMC_BUS_WIDTH_8:
-		reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
-		writeb(reg_tmp | 0x04, priv->sdmmc_base + SDMMC_EXTCTRL);
+		busmode |= BM_EIGHTBIT_MODE;
+		extctrl |= EXT_EIGHTBIT;
 		break;
 	case MMC_BUS_WIDTH_4:
-		reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
-		writeb(reg_tmp | BM_FOURBIT_MODE, priv->sdmmc_base +
-		       SDMMC_BUSMODE);
-
-		reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
-		writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL);
+		busmode |= BM_FOURBIT_MODE;
 		break;
 	case MMC_BUS_WIDTH_1:
-		reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
-		writeb(reg_tmp & BM_ONEBIT_MASK, priv->sdmmc_base +
-		       SDMMC_BUSMODE);
-
-		reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
-		writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL);
 		break;
 	}
+
+	writeb(busmode, priv->sdmmc_base + SDMMC_BUSMODE);
+	writeb(extctrl, priv->sdmmc_base + SDMMC_EXTCTRL);
 }
 
 static int wmt_mci_get_ro(struct mmc_host *mmc)
@@ -830,7 +829,7 @@ static int wmt_mci_probe(struct platform_device *pdev)
 		goto fail3;
 	}
 
-	ret = request_irq(dma_irq, wmt_mci_dma_isr, 32, "sdmmc", priv);
+	ret = request_irq(dma_irq, wmt_mci_dma_isr, 0, "sdmmc", priv);
 	if (ret) {
 		dev_err(&pdev->dev, "Register DMA IRQ fail\n");
 		goto fail4;
author	Linus Torvalds <torvalds@linux-foundation.org>	2014-08-14 17:15:53 +0200
committer	Linus Torvalds <torvalds@linux-foundation.org>	2014-08-14 17:15:53 +0200
commit	a8e4def604a9affa04fdd4efa0692da1385ffa3f (patch)
tree	ab7c02cbfbd72cc4fe60674cd5da7e3d01035f00 /drivers/mmc
parent	Merge branch 'for-3.17/drivers' of git://git.kernel.dk/linux-block (diff)
parent	mmc: dw_mmc: modify the dt-binding for removing slot-node and supports-highspeed (diff)
download	linux-a8e4def604a9affa04fdd4efa0692da1385ffa3f.tar.xz linux-a8e4def604a9affa04fdd4efa0692da1385ffa3f.zip