Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (83 commits)
  mmc: fix compile error when CONFIG_BLOCK is not enabled
  mmc: core: Cleanup eMMC4.5 conditionals
  mmc: omap_hsmmc: if multiblock reads are broken, disable them
  mmc: core: add workaround for controllers with broken multiblock reads
  mmc: core: Prevent too long response times for suspend
  mmc: recognise SDIO cards with SDIO_CCCR_REV 3.00
  mmc: sd: Handle SD3.0 cards not supporting UHS-I bus speed mode
  mmc: core: support HPI send command
  mmc: core: Add cache control for eMMC4.5 device
  mmc: core: Modify the timeout value for writing power class
  mmc: core: new discard feature support at eMMC v4.5
  mmc: core: mmc sanitize feature support for v4.5
  mmc: dw_mmc: modify DATA register offset
  mmc: sdhci-pci: add flag for devices that can support runtime PM
  mmc: omap_hsmmc: ensure pbias configuration is always done
  mmc: core: Add Power Off Notify Feature eMMC 4.5
  mmc: sdhci-s3c: fix potential NULL dereference
  mmc: replace printk with appropriate display macro
  mmc: core: Add default timeout value for CMD6
  mmc: sdhci-pci: add runtime pm support
  ...

Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt

@@ -0,0 +1,27 @@
+* NVIDIA Tegra Secure Digital Host Controller
+
+This controller on Tegra family SoCs provides an interface for MMC, SD,
+and SDIO types of memory cards.
+
+Required properties:
+- compatible : Should be "nvidia,<chip>-sdhci"
+- reg : Should contain SD/MMC registers location and length
+- interrupts : Should contain SD/MMC interrupt
+
+Optional properties:
+- cd-gpios : Specify GPIOs for card detection
+- wp-gpios : Specify GPIOs for write protection
+- power-gpios : Specify GPIOs for power control
+- support-8bit : Boolean, indicates if 8-bit mode should be used.
+
+Example:
+
+sdhci@c8000200 {
+	compatible = "nvidia,tegra20-sdhci";
+	reg = <0xc8000200 0x200>;
+	interrupts = <47>;
+	cd-gpios = <&gpio 69 0>; /* gpio PI5 */
+	wp-gpios = <&gpio 57 0>; /* gpio PH1 */
+	power-gpios = <&gpio 155 0>; /* gpio PT3 */
+	support-8bit;
+};

Documentation/fault-injection/fault-injection.txt

@@ -21,6 +21,11 @@ o fail_make_request
   /sys/block/<device>/make-it-fail or
   /sys/block/<device>/<partition>/make-it-fail. (generic_make_request())
 
+o fail_mmc_request
+
+  injects MMC data errors on devices permitted by setting
+  debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request
+
 Configure fault-injection capabilities behavior
 -----------------------------------------------
 
@@ -115,7 +120,8 @@ use the boot option:
 
 	failslab=
 	fail_page_alloc=
-	fail_make_request=<interval>,<probability>,<space>,<times>
+	fail_make_request=
+	mmc_core.fail_request=<interval>,<probability>,<space>,<times>
 
 How to add new fault injection capability
 -----------------------------------------

arch/arm/mach-at91/at91sam9260_devices.c

@@ -319,7 +319,7 @@ void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
 	if (!data)
 		return;
 
-	for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+	for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 		if (data->slot[i].bus_width) {
 			/* input/irq */
 			if (data->slot[i].detect_pin) {

arch/arm/mach-msm/devices-msm7x00.c

@@ -175,12 +175,6 @@ static struct resource resources_sdc1[] = {
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
 	},
-	{
-		.start	= INT_SDC1_1,
-		.end	= INT_SDC1_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
-	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
 		.name	= "status_irq"
@@ -203,12 +197,6 @@ static struct resource resources_sdc2[] = {
 		.end	= INT_SDC2_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC2_1,
-		.end	= INT_SDC2_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
@@ -232,12 +220,6 @@ static struct resource resources_sdc3[] = {
 		.end	= INT_SDC3_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC3_1,
-		.end	= INT_SDC3_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
@@ -261,12 +243,6 @@ static struct resource resources_sdc4[] = {
 		.end	= INT_SDC4_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC4_1,
-		.end	= INT_SDC4_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,

arch/arm/mach-msm/devices-qsd8x50.c

@@ -139,12 +139,6 @@ static struct resource resources_sdc1[] = {
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
 	},
-	{
-		.start	= INT_SDC1_1,
-		.end	= INT_SDC1_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
-	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
 		.name	= "status_irq"
@@ -167,12 +161,6 @@ static struct resource resources_sdc2[] = {
 		.end	= INT_SDC2_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC2_1,
-		.end	= INT_SDC2_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
@@ -196,12 +184,6 @@ static struct resource resources_sdc3[] = {
 		.end	= INT_SDC3_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC3_1,
-		.end	= INT_SDC3_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,
@@ -225,12 +207,6 @@ static struct resource resources_sdc4[] = {
 		.end	= INT_SDC4_0,
 		.flags	= IORESOURCE_IRQ,
 		.name	= "cmd_irq",
-	},
-		{
-		.start	= INT_SDC4_1,
-		.end	= INT_SDC4_1,
-		.flags	= IORESOURCE_IRQ,
-		.name	= "pio_irq",
 	},
 	{
 		.flags	= IORESOURCE_IRQ | IORESOURCE_DISABLED,

arch/arm/mach-msm/include/mach/mmc.h

@@ -8,13 +8,6 @@
 #include <linux/mmc/card.h>
 #include <linux/mmc/sdio_func.h>
 
-struct embedded_sdio_data {
-	struct sdio_cis cis;
-	struct sdio_cccr cccr;
-	struct sdio_embedded_func *funcs;
-	int num_funcs;
-};
-
 struct msm_mmc_gpio {
 	unsigned no;
 	const char *name;
@@ -29,9 +22,9 @@ struct msm_mmc_platform_data {
 	unsigned int ocr_mask;			/* available voltages */
 	u32 (*translate_vdd)(struct device *, unsigned int);
 	unsigned int (*status)(struct device *);
-	struct embedded_sdio_data *embedded_sdio;
 	int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
 	struct msm_mmc_gpio_data *gpio_data;
+	void (*init_card)(struct mmc_card *card);
 };
 
 #endif

arch/arm/mach-shmobile/board-ag5evm.c

@@ -355,14 +355,17 @@ static struct resource sdhi0_resources[] = {
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
+		.name	= SH_MOBILE_SDHI_IRQ_CARD_DETECT,
 		.start	= gic_spi(83),
 		.flags	= IORESOURCE_IRQ,
 	},
 	[2] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDCARD,
 		.start	= gic_spi(84),
 		.flags	= IORESOURCE_IRQ,
 	},
 	[3] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDIO,
 		.start	= gic_spi(85),
 		.flags	= IORESOURCE_IRQ,
 	},
@@ -398,14 +401,17 @@ static struct resource sdhi1_resources[] = {
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
+		.name	= SH_MOBILE_SDHI_IRQ_CARD_DETECT,
 		.start	= gic_spi(87),
 		.flags	= IORESOURCE_IRQ,
 	},
 	[2] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDCARD,
 		.start	= gic_spi(88),
 		.flags	= IORESOURCE_IRQ,
 	},
 	[3] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDIO,
 		.start	= gic_spi(89),
 		.flags	= IORESOURCE_IRQ,
 	},

arch/arm/mach-shmobile/board-mackerel.c

@@ -1072,14 +1072,17 @@ static struct resource sdhi1_resources[] = {
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
+		.name	= SH_MOBILE_SDHI_IRQ_CARD_DETECT,
 		.start	= evt2irq(0x0e80), /* SDHI1_SDHI1I0 */
 		.flags	= IORESOURCE_IRQ,
 	},
 	[2] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDCARD,
 		.start	= evt2irq(0x0ea0), /* SDHI1_SDHI1I1 */
 		.flags	= IORESOURCE_IRQ,
 	},
 	[3] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDIO,
 		.start	= evt2irq(0x0ec0), /* SDHI1_SDHI1I2 */
 		.flags	= IORESOURCE_IRQ,
 	},
@@ -1123,14 +1126,17 @@ static struct resource sdhi2_resources[] = {
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
+		.name	= SH_MOBILE_SDHI_IRQ_CARD_DETECT,
 		.start	= evt2irq(0x1200), /* SDHI2_SDHI2I0 */
 		.flags	= IORESOURCE_IRQ,
 	},
 	[2] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDCARD,
 		.start	= evt2irq(0x1220), /* SDHI2_SDHI2I1 */
 		.flags	= IORESOURCE_IRQ,
 	},
 	[3] = {
+		.name	= SH_MOBILE_SDHI_IRQ_SDIO,
 		.start	= evt2irq(0x1240), /* SDHI2_SDHI2I2 */
 		.flags	= IORESOURCE_IRQ,
 	},

arch/arm/plat-omap/include/plat/mmc.h

@@ -31,7 +31,24 @@
 
 #define OMAP_MMC_MAX_SLOTS	2
 
-#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT	BIT(1)
+/*
+ * struct omap_mmc_dev_attr.flags possibilities
+ *
+ * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
+ *    operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
+ *    should be set if this is the case.  See for example Section 22.5.3
+ *    "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
+ *    Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
+ *
+ * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
+ *    don't work correctly on some MMC controller instances on some
+ *    OMAP3 SoCs; this flag should be set if this is the case.  See
+ *    for example Advisory 2.1.1.128 "MMC: Multiple Block Read
+ *    Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
+ *    Revision F (October 2010) (SPRZ278F).
+ */
+#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT		BIT(0)
+#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ	BIT(1)
 
 struct omap_mmc_dev_attr {
 	u8 flags;

drivers/mmc/card/block.c

@@ -94,6 +94,11 @@ struct mmc_blk_data {
 	unsigned int	read_only;
 	unsigned int	part_type;
 	unsigned int	name_idx;
+	unsigned int	reset_done;
+#define MMC_BLK_READ		BIT(0)
+#define MMC_BLK_WRITE		BIT(1)
+#define MMC_BLK_DISCARD		BIT(2)
+#define MMC_BLK_SECDISCARD	BIT(3)
 
 	/*
 	 * Only set in main mmc_blk_data associated
@@ -109,11 +114,11 @@ static DEFINE_MUTEX(open_lock);
 enum mmc_blk_status {
 	MMC_BLK_SUCCESS = 0,
 	MMC_BLK_PARTIAL,
-	MMC_BLK_RETRY,
-	MMC_BLK_RETRY_SINGLE,
-	MMC_BLK_DATA_ERR,
 	MMC_BLK_CMD_ERR,
+	MMC_BLK_RETRY,
 	MMC_BLK_ABORT,
+	MMC_BLK_DATA_ERR,
+	MMC_BLK_ECC_ERR,
 };
 
 module_param(perdev_minors, int, 0444);
@@ -291,7 +296,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	struct mmc_card *card;
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct scatterlist sg;
 	int err;
 
@@ -442,19 +447,24 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
 {
 	int ret;
 	struct mmc_blk_data *main_md = mmc_get_drvdata(card);
+
 	if (main_md->part_curr == md->part_type)
 		return 0;
 
 	if (mmc_card_mmc(card)) {
-		card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
-		card->ext_csd.part_config |= md->part_type;
+		u8 part_config = card->ext_csd.part_config;
+
+		part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
+		part_config |= md->part_type;
 
 		ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
-				 EXT_CSD_PART_CONFIG, card->ext_csd.part_config,
+				 EXT_CSD_PART_CONFIG, part_config,
 				 card->ext_csd.part_time);
 		if (ret)
 			return ret;
-}
+
+		card->ext_csd.part_config = part_config;
+	}
 
 	main_md->part_curr = md->part_type;
 	return 0;
@@ -466,7 +476,7 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
 	u32 result;
 	__be32 *blocks;
 
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	unsigned int timeout_us;
@@ -616,7 +626,7 @@ static int mmc_blk_cmd_error(struct request *req, const char *name, int error,
  * Otherwise we don't understand what happened, so abort.
  */
 static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
-	struct mmc_blk_request *brq)
+	struct mmc_blk_request *brq, int *ecc_err)
 {
 	bool prev_cmd_status_valid = true;
 	u32 status, stop_status = 0;
@@ -641,6 +651,12 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
 	if (err)
 		return ERR_ABORT;
 
+	/* Flag ECC errors */
+	if ((status & R1_CARD_ECC_FAILED) ||
+	    (brq->stop.resp[0] & R1_CARD_ECC_FAILED) ||
+	    (brq->cmd.resp[0] & R1_CARD_ECC_FAILED))
+		*ecc_err = 1;
+
 	/*
 	 * Check the current card state.  If it is in some data transfer
 	 * mode, tell it to stop (and hopefully transition back to TRAN.)
@@ -658,6 +674,8 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
 		 */
 		if (err)
 			return ERR_ABORT;
+		if (stop_status & R1_CARD_ECC_FAILED)
+			*ecc_err = 1;
 	}
 
 	/* Check for set block count errors */
@@ -670,6 +688,10 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
 		return mmc_blk_cmd_error(req, "r/w cmd", brq->cmd.error,
 				prev_cmd_status_valid, status);
 
+	/* Data errors */
+	if (!brq->stop.error)
+		return ERR_CONTINUE;
+
 	/* Now for stop errors.  These aren't fatal to the transfer. */
 	pr_err("%s: error %d sending stop command, original cmd response %#x, card status %#x\n",
 	       req->rq_disk->disk_name, brq->stop.error,
@@ -686,12 +708,45 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
 	return ERR_CONTINUE;
 }
 
+static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host,
+			 int type)
+{
+	int err;
+
+	if (md->reset_done & type)
+		return -EEXIST;
+
+	md->reset_done |= type;
+	err = mmc_hw_reset(host);
+	/* Ensure we switch back to the correct partition */
+	if (err != -EOPNOTSUPP) {
+		struct mmc_blk_data *main_md = mmc_get_drvdata(host->card);
+		int part_err;
+
+		main_md->part_curr = main_md->part_type;
+		part_err = mmc_blk_part_switch(host->card, md);
+		if (part_err) {
+			/*
+			 * We have failed to get back into the correct
+			 * partition, so we need to abort the whole request.
+			 */
+			return -ENODEV;
+		}
+	}
+	return err;
+}
+
+static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type)
+{
+	md->reset_done &= ~type;
+}
+
 static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 {
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
 	unsigned int from, nr, arg;
-	int err = 0;
+	int err = 0, type = MMC_BLK_DISCARD;
 
 	if (!mmc_can_erase(card)) {
 		err = -EOPNOTSUPP;
@@ -701,11 +756,13 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 	from = blk_rq_pos(req);
 	nr = blk_rq_sectors(req);
 
-	if (mmc_can_trim(card))
+	if (mmc_can_discard(card))
+		arg = MMC_DISCARD_ARG;
+	else if (mmc_can_trim(card))
 		arg = MMC_TRIM_ARG;
 	else
 		arg = MMC_ERASE_ARG;
-
+retry:
 	if (card->quirks & MMC_QUIRK_INAND_CMD38) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 				 INAND_CMD38_ARG_EXT_CSD,
@@ -718,6 +775,10 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 	}
 	err = mmc_erase(card, from, nr, arg);
 out:
+	if (err == -EIO && !mmc_blk_reset(md, card->host, type))
+		goto retry;
+	if (!err)
+		mmc_blk_reset_success(md, type);
 	spin_lock_irq(&md->lock);
 	__blk_end_request(req, err, blk_rq_bytes(req));
 	spin_unlock_irq(&md->lock);
@@ -731,13 +792,20 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
 	unsigned int from, nr, arg;
-	int err = 0;
+	int err = 0, type = MMC_BLK_SECDISCARD;
 
-	if (!mmc_can_secure_erase_trim(card)) {
+	if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
+	/* The sanitize operation is supported at v4.5 only */
+	if (mmc_can_sanitize(card)) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				EXT_CSD_SANITIZE_START, 1, 0);
+		goto out;
+	}
+
 	from = blk_rq_pos(req);
 	nr = blk_rq_sectors(req);
 
@@ -745,7 +813,7 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 		arg = MMC_SECURE_TRIM1_ARG;
 	else
 		arg = MMC_SECURE_ERASE_ARG;
-
+retry:
 	if (card->quirks & MMC_QUIRK_INAND_CMD38) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 				 INAND_CMD38_ARG_EXT_CSD,
@@ -769,6 +837,10 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 		err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG);
 	}
 out:
+	if (err == -EIO && !mmc_blk_reset(md, card->host, type))
+		goto retry;
+	if (!err)
+		mmc_blk_reset_success(md, type);
 	spin_lock_irq(&md->lock);
 	__blk_end_request(req, err, blk_rq_bytes(req));
 	spin_unlock_irq(&md->lock);
@@ -779,16 +851,18 @@ out:
 static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req)
 {
 	struct mmc_blk_data *md = mq->data;
+	struct mmc_card *card = md->queue.card;
+	int ret = 0;
+
+	ret = mmc_flush_cache(card);
+	if (ret)
+		ret = -EIO;
 
-	/*
-	 * No-op, only service this because we need REQ_FUA for reliable
-	 * writes.
-	 */
 	spin_lock_irq(&md->lock);
-	__blk_end_request_all(req, 0);
+	__blk_end_request_all(req, ret);
 	spin_unlock_irq(&md->lock);
 
-	return 1;
+	return ret ? 0 : 1;
 }
 
 /*
@@ -825,11 +899,11 @@ static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
 static int mmc_blk_err_check(struct mmc_card *card,
 			     struct mmc_async_req *areq)
 {
-	enum mmc_blk_status ret = MMC_BLK_SUCCESS;
 	struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req,
 						    mmc_active);
 	struct mmc_blk_request *brq = &mq_mrq->brq;
 	struct request *req = mq_mrq->req;
+	int ecc_err = 0;
 
 	/*
 	 * sbc.error indicates a problem with the set block count
@@ -841,8 +915,9 @@ static int mmc_blk_err_check(struct mmc_card *card,
 	 * stop.error indicates a problem with the stop command.  Data
 	 * may have been transferred, or may still be transferring.
 	 */
-	if (brq->sbc.error || brq->cmd.error || brq->stop.error) {
-		switch (mmc_blk_cmd_recovery(card, req, brq)) {
+	if (brq->sbc.error || brq->cmd.error || brq->stop.error ||
+	    brq->data.error) {
+		switch (mmc_blk_cmd_recovery(card, req, brq, &ecc_err)) {
 		case ERR_RETRY:
 			return MMC_BLK_RETRY;
 		case ERR_ABORT:
@@ -873,7 +948,7 @@ static int mmc_blk_err_check(struct mmc_card *card,
 		do {
 			int err = get_card_status(card, &status, 5);
 			if (err) {
-				printk(KERN_ERR "%s: error %d requesting status\n",
+				pr_err("%s: error %d requesting status\n",
 				       req->rq_disk->disk_name, err);
 				return MMC_BLK_CMD_ERR;
 			}
@@ -894,23 +969,21 @@ static int mmc_blk_err_check(struct mmc_card *card,
 		       brq->cmd.resp[0], brq->stop.resp[0]);
 
 		if (rq_data_dir(req) == READ) {
-			if (brq->data.blocks > 1) {
-				/* Redo read one sector at a time */
-				pr_warning("%s: retrying using single block read\n",
-					   req->rq_disk->disk_name);
-				return MMC_BLK_RETRY_SINGLE;
-			}
+			if (ecc_err)
+				return MMC_BLK_ECC_ERR;
 			return MMC_BLK_DATA_ERR;
 		} else {
 			return MMC_BLK_CMD_ERR;
 		}
 	}
 
-	if (ret == MMC_BLK_SUCCESS &&
-	    blk_rq_bytes(req) != brq->data.bytes_xfered)
-		ret = MMC_BLK_PARTIAL;
+	if (!brq->data.bytes_xfered)
+		return MMC_BLK_RETRY;
 
-	return ret;
+	if (blk_rq_bytes(req) != brq->data.bytes_xfered)
+		return MMC_BLK_PARTIAL;
+
+	return MMC_BLK_SUCCESS;
 }
 
 static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
@@ -957,13 +1030,20 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
 	if (brq->data.blocks > card->host->max_blk_count)
 		brq->data.blocks = card->host->max_blk_count;
 
-	/*
-	 * After a read error, we redo the request one sector at a time
-	 * in order to accurately determine which sectors can be read
-	 * successfully.
-	 */
-	if (disable_multi && brq->data.blocks > 1)
-		brq->data.blocks = 1;
+	if (brq->data.blocks > 1) {
+		/*
+		 * After a read error, we redo the request one sector
+		 * at a time in order to accurately determine which
+		 * sectors can be read successfully.
+		 */
+		if (disable_multi)
+			brq->data.blocks = 1;
+
+		/* Some controllers can't do multiblock reads due to hw bugs */
+		if (card->host->caps2 & MMC_CAP2_NO_MULTI_READ &&
+		    rq_data_dir(req) == READ)
+			brq->data.blocks = 1;
+	}
 
 	if (brq->data.blocks > 1 || do_rel_wr) {
 		/* SPI multiblock writes terminate using a special
@@ -1049,12 +1129,41 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
 	mmc_queue_bounce_pre(mqrq);
 }
 
+static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card,
+			   struct mmc_blk_request *brq, struct request *req,
+			   int ret)
+{
+	/*
+	 * If this is an SD card and we're writing, we can first
+	 * mark the known good sectors as ok.
+	 *
+	 * If the card is not SD, we can still ok written sectors
+	 * as reported by the controller (which might be less than
+	 * the real number of written sectors, but never more).
+	 */
+	if (mmc_card_sd(card)) {
+		u32 blocks;
+
+		blocks = mmc_sd_num_wr_blocks(card);
+		if (blocks != (u32)-1) {
+			spin_lock_irq(&md->lock);
+			ret = __blk_end_request(req, 0, blocks << 9);
+			spin_unlock_irq(&md->lock);
+		}
+	} else {
+		spin_lock_irq(&md->lock);
+		ret = __blk_end_request(req, 0, brq->data.bytes_xfered);
+		spin_unlock_irq(&md->lock);
+	}
+	return ret;
+}
+
 static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 {
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
 	struct mmc_blk_request *brq = &mq->mqrq_cur->brq;
-	int ret = 1, disable_multi = 0, retry = 0;
+	int ret = 1, disable_multi = 0, retry = 0, type;
 	enum mmc_blk_status status;
 	struct mmc_queue_req *mq_rq;
 	struct request *req;
@@ -1076,6 +1185,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 		mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
 		brq = &mq_rq->brq;
 		req = mq_rq->req;
+		type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE;
 		mmc_queue_bounce_post(mq_rq);
 
 		switch (status) {
@@ -1084,18 +1194,18 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 			/*
 			 * A block was successfully transferred.
 			 */
+			mmc_blk_reset_success(md, type);
 			spin_lock_irq(&md->lock);
 			ret = __blk_end_request(req, 0,
 						brq->data.bytes_xfered);
 			spin_unlock_irq(&md->lock);
+			/*
+			 * If the blk_end_request function returns non-zero even
+			 * though all data has been transferred and no errors
+			 * were returned by the host controller, it's a bug.
+			 */
 			if (status == MMC_BLK_SUCCESS && ret) {
-				/*
-				 * The blk_end_request has returned non zero
-				 * even though all data is transfered and no
-				 * erros returned by host.
-				 * If this happen it's a bug.
-				 */
-				printk(KERN_ERR "%s BUG rq_tot %d d_xfer %d\n",
+				pr_err("%s BUG rq_tot %d d_xfer %d\n",
 				       __func__, blk_rq_bytes(req),
 				       brq->data.bytes_xfered);
 				rqc = NULL;
@@ -1103,16 +1213,36 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 			}
 			break;
 		case MMC_BLK_CMD_ERR:
-			goto cmd_err;
-		case MMC_BLK_RETRY_SINGLE:
-			disable_multi = 1;
-			break;
+			ret = mmc_blk_cmd_err(md, card, brq, req, ret);
+			if (!mmc_blk_reset(md, card->host, type))
+				break;
+			goto cmd_abort;
 		case MMC_BLK_RETRY:
 			if (retry++ < 5)
 				break;
+			/* Fall through */
 		case MMC_BLK_ABORT:
+			if (!mmc_blk_reset(md, card->host, type))
+				break;
 			goto cmd_abort;
-		case MMC_BLK_DATA_ERR:
+		case MMC_BLK_DATA_ERR: {
+			int err;
+
+			err = mmc_blk_reset(md, card->host, type);
+			if (!err)
+				break;
+			if (err == -ENODEV)
+				goto cmd_abort;
+			/* Fall through */
+		}
+		case MMC_BLK_ECC_ERR:
+			if (brq->data.blocks > 1) {
+				/* Redo read one sector at a time */
+				pr_warning("%s: retrying using single block read\n",
+					   req->rq_disk->disk_name);
+				disable_multi = 1;
+				break;
+			}
 			/*
 			 * After an error, we redo I/O one sector at a
 			 * time, so we only reach here after trying to
@@ -1129,7 +1259,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 
 		if (ret) {
 			/*
-			 * In case of a none complete request
+			 * In case of a incomplete request
 			 * prepare it again and resend.
 			 */
 			mmc_blk_rw_rq_prep(mq_rq, card, disable_multi, mq);
@@ -1139,30 +1269,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 
 	return 1;
 
- cmd_err:
- 	/*
- 	 * If this is an SD card and we're writing, we can first
- 	 * mark the known good sectors as ok.
- 	 *
-	 * If the card is not SD, we can still ok written sectors
-	 * as reported by the controller (which might be less than
-	 * the real number of written sectors, but never more).
-	 */
-	if (mmc_card_sd(card)) {
-		u32 blocks;
-
-		blocks = mmc_sd_num_wr_blocks(card);
-		if (blocks != (u32)-1) {
-			spin_lock_irq(&md->lock);
-			ret = __blk_end_request(req, 0, blocks << 9);
-			spin_unlock_irq(&md->lock);
-		}
-	} else {
-		spin_lock_irq(&md->lock);
-		ret = __blk_end_request(req, 0, brq->data.bytes_xfered);
-		spin_unlock_irq(&md->lock);
-	}
-
  cmd_abort:
 	spin_lock_irq(&md->lock);
 	while (ret)
@@ -1190,6 +1296,11 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
 	ret = mmc_blk_part_switch(card, md);
 	if (ret) {
+		if (req) {
+			spin_lock_irq(&md->lock);
+			__blk_end_request_all(req, -EIO);
+			spin_unlock_irq(&md->lock);
+		}
 		ret = 0;
 		goto out;
 	}
@@ -1374,32 +1485,35 @@ static int mmc_blk_alloc_part(struct mmc_card *card,
 
 	string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2,
 			cap_str, sizeof(cap_str));
-	printk(KERN_INFO "%s: %s %s partition %u %s\n",
+	pr_info("%s: %s %s partition %u %s\n",
 	       part_md->disk->disk_name, mmc_card_id(card),
 	       mmc_card_name(card), part_md->part_type, cap_str);
 	return 0;
 }
 
+/* MMC Physical partitions consist of two boot partitions and
+ * up to four general purpose partitions.
+ * For each partition enabled in EXT_CSD a block device will be allocatedi
+ * to provide access to the partition.
+ */
+
 static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md)
 {
-	int ret = 0;
+	int idx, ret = 0;
 
 	if (!mmc_card_mmc(card))
 		return 0;
 
-	if (card->ext_csd.boot_size) {
-		ret = mmc_blk_alloc_part(card, md, EXT_CSD_PART_CONFIG_ACC_BOOT0,
-					 card->ext_csd.boot_size >> 9,
-					 true,
-					 "boot0");
-		if (ret)
-			return ret;
-		ret = mmc_blk_alloc_part(card, md, EXT_CSD_PART_CONFIG_ACC_BOOT1,
-					 card->ext_csd.boot_size >> 9,
-					 true,
-					 "boot1");
-		if (ret)
-			return ret;
+	for (idx = 0; idx < card->nr_parts; idx++) {
+		if (card->part[idx].size) {
+			ret = mmc_blk_alloc_part(card, md,
+				card->part[idx].part_cfg,
+				card->part[idx].size >> 9,
+				card->part[idx].force_ro,
+				card->part[idx].name);
+			if (ret)
+				return ret;
+		}
 	}
 
 	return ret;
@@ -1415,7 +1529,7 @@ mmc_blk_set_blksize(struct mmc_blk_data *md, struct mmc_card *card)
 	mmc_release_host(card->host);
 
 	if (err) {
-		printk(KERN_ERR "%s: unable to set block size to 512: %d\n",
+		pr_err("%s: unable to set block size to 512: %d\n",
 			md->disk->disk_name, err);
 		return -EINVAL;
 	}
@@ -1517,7 +1631,7 @@ static int mmc_blk_probe(struct mmc_card *card)
 
 	string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2,
 			cap_str, sizeof(cap_str));
-	printk(KERN_INFO "%s: %s %s %s %s\n",
+	pr_info("%s: %s %s %s %s\n",
 		md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
 		cap_str, md->read_only ? "(ro)" : "");
 

drivers/mmc/card/mmc_test.c

@@ -22,6 +22,7 @@
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 #include <linux/seq_file.h>
+#include <linux/module.h>
 
 #define RESULT_OK		0
 #define RESULT_FAIL		1
@@ -250,7 +251,7 @@ static int mmc_test_wait_busy(struct mmc_test_card *test)
 		if (!busy && mmc_test_busy(&cmd)) {
 			busy = 1;
 			if (test->card->host->caps & MMC_CAP_WAIT_WHILE_BUSY)
-				printk(KERN_INFO "%s: Warning: Host did not "
+				pr_info("%s: Warning: Host did not "
 					"wait for busy state to end.\n",
 					mmc_hostname(test->card->host));
 		}
@@ -552,7 +553,7 @@ static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
 	rate = mmc_test_rate(bytes, &ts);
 	iops = mmc_test_rate(100, &ts); /* I/O ops per sec x 100 */
 
-	printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
+	pr_info("%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
 			 "seconds (%u kB/s, %u KiB/s, %u.%02u IOPS)\n",
 			 mmc_hostname(test->card->host), sectors, sectors >> 1,
 			 (sectors & 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
@@ -578,7 +579,7 @@ static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
 	rate = mmc_test_rate(tot, &ts);
 	iops = mmc_test_rate(count * 100, &ts); /* I/O ops per sec x 100 */
 
-	printk(KERN_INFO "%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
+	pr_info("%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
 			 "%lu.%09lu seconds (%u kB/s, %u KiB/s, "
 			 "%u.%02u IOPS, sg_len %d)\n",
 			 mmc_hostname(test->card->host), count, sectors, count,
@@ -1408,7 +1409,7 @@ static int mmc_test_multi_read_high(struct mmc_test_card *test)
 
 static int mmc_test_no_highmem(struct mmc_test_card *test)
 {
-	printk(KERN_INFO "%s: Highmem not configured - test skipped\n",
+	pr_info("%s: Highmem not configured - test skipped\n",
 	       mmc_hostname(test->card->host));
 	return 0;
 }
@@ -1435,7 +1436,7 @@ static int mmc_test_area_map(struct mmc_test_card *test, unsigned long sz,
 				      t->max_seg_sz, &t->sg_len, min_sg_len);
 	}
 	if (err)
-		printk(KERN_INFO "%s: Failed to map sg list\n",
+		pr_info("%s: Failed to map sg list\n",
 		       mmc_hostname(test->card->host));
 	return err;
 }
@@ -2135,7 +2136,7 @@ static int mmc_test_rw_multiple(struct mmc_test_card *test,
 
 	return ret;
  err:
-	printk(KERN_INFO "[%s] error\n", __func__);
+	pr_info("[%s] error\n", __func__);
 	return ret;
 }
 
@@ -2149,7 +2150,7 @@ static int mmc_test_rw_multiple_size(struct mmc_test_card *test,
 
 	if (rw->do_nonblock_req &&
 	    ((!pre_req && post_req) || (pre_req && !post_req))) {
-		printk(KERN_INFO "error: only one of pre/post is defined\n");
+		pr_info("error: only one of pre/post is defined\n");
 		return -EINVAL;
 	}
 
@@ -2328,6 +2329,31 @@ static int mmc_test_profile_sglen_r_nonblock_perf(struct mmc_test_card *test)
 	return mmc_test_rw_multiple_sg_len(test, &test_data);
 }
 
+/*
+ * eMMC hardware reset.
+ */
+static int mmc_test_hw_reset(struct mmc_test_card *test)
+{
+	struct mmc_card *card = test->card;
+	struct mmc_host *host = card->host;
+	int err;
+
+	err = mmc_hw_reset_check(host);
+	if (!err)
+		return RESULT_OK;
+
+	if (err == -ENOSYS)
+		return RESULT_FAIL;
+
+	if (err != -EOPNOTSUPP)
+		return err;
+
+	if (!mmc_can_reset(card))
+		return RESULT_UNSUP_CARD;
+
+	return RESULT_UNSUP_HOST;
+}
+
 static const struct mmc_test_case mmc_test_cases[] = {
 	{
 		.name = "Basic write (no data verification)",
@@ -2650,6 +2676,11 @@ static const struct mmc_test_case mmc_test_cases[] = {
 		.run = mmc_test_profile_sglen_r_nonblock_perf,
 		.cleanup = mmc_test_area_cleanup,
 	},
+
+	{
+		.name = "eMMC hardware reset",
+		.run = mmc_test_hw_reset,
+	},
 };
 
 static DEFINE_MUTEX(mmc_test_lock);
@@ -2660,7 +2691,7 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
 {
 	int i, ret;
 
-	printk(KERN_INFO "%s: Starting tests of card %s...\n",
+	pr_info("%s: Starting tests of card %s...\n",
 		mmc_hostname(test->card->host), mmc_card_id(test->card));
 
 	mmc_claim_host(test->card->host);
@@ -2671,14 +2702,14 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
 		if (testcase && ((i + 1) != testcase))
 			continue;
 
-		printk(KERN_INFO "%s: Test case %d. %s...\n",
+		pr_info("%s: Test case %d. %s...\n",
 			mmc_hostname(test->card->host), i + 1,
 			mmc_test_cases[i].name);
 
 		if (mmc_test_cases[i].prepare) {
 			ret = mmc_test_cases[i].prepare(test);
 			if (ret) {
-				printk(KERN_INFO "%s: Result: Prepare "
+				pr_info("%s: Result: Prepare "
 					"stage failed! (%d)\n",
 					mmc_hostname(test->card->host),
 					ret);
@@ -2708,25 +2739,25 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
 		ret = mmc_test_cases[i].run(test);
 		switch (ret) {
 		case RESULT_OK:
-			printk(KERN_INFO "%s: Result: OK\n",
+			pr_info("%s: Result: OK\n",
 				mmc_hostname(test->card->host));
 			break;
 		case RESULT_FAIL:
-			printk(KERN_INFO "%s: Result: FAILED\n",
+			pr_info("%s: Result: FAILED\n",
 				mmc_hostname(test->card->host));
 			break;
 		case RESULT_UNSUP_HOST:
-			printk(KERN_INFO "%s: Result: UNSUPPORTED "
+			pr_info("%s: Result: UNSUPPORTED "
 				"(by host)\n",
 				mmc_hostname(test->card->host));
 			break;
 		case RESULT_UNSUP_CARD:
-			printk(KERN_INFO "%s: Result: UNSUPPORTED "
+			pr_info("%s: Result: UNSUPPORTED "
 				"(by card)\n",
 				mmc_hostname(test->card->host));
 			break;
 		default:
-			printk(KERN_INFO "%s: Result: ERROR (%d)\n",
+			pr_info("%s: Result: ERROR (%d)\n",
 				mmc_hostname(test->card->host), ret);
 		}
 
@@ -2737,7 +2768,7 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
 		if (mmc_test_cases[i].cleanup) {
 			ret = mmc_test_cases[i].cleanup(test);
 			if (ret) {
-				printk(KERN_INFO "%s: Warning: Cleanup "
+				pr_info("%s: Warning: Cleanup "
 					"stage failed! (%d)\n",
 					mmc_hostname(test->card->host),
 					ret);
@@ -2747,7 +2778,7 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
 
 	mmc_release_host(test->card->host);
 
-	printk(KERN_INFO "%s: Tests completed.\n",
+	pr_info("%s: Tests completed.\n",
 		mmc_hostname(test->card->host));
 }
 

drivers/mmc/card/queue.c

@@ -108,7 +108,7 @@ static void mmc_request(struct request_queue *q)
 		wake_up_process(mq->thread);
 }
 
-struct scatterlist *mmc_alloc_sg(int sg_len, int *err)
+static struct scatterlist *mmc_alloc_sg(int sg_len, int *err)
 {
 	struct scatterlist *sg;
 
@@ -140,7 +140,7 @@ static void mmc_queue_setup_discard(struct request_queue *q,
 	/* granularity must not be greater than max. discard */
 	if (card->pref_erase > max_discard)
 		q->limits.discard_granularity = 0;
-	if (mmc_can_secure_erase_trim(card))
+	if (mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))
 		queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, q);
 }
 
@@ -197,13 +197,13 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
 		if (bouncesz > 512) {
 			mqrq_cur->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
 			if (!mqrq_cur->bounce_buf) {
-				printk(KERN_WARNING "%s: unable to "
+				pr_warning("%s: unable to "
 					"allocate bounce cur buffer\n",
 					mmc_card_name(card));
 			}
 			mqrq_prev->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
 			if (!mqrq_prev->bounce_buf) {
-				printk(KERN_WARNING "%s: unable to "
+				pr_warning("%s: unable to "
 					"allocate bounce prev buffer\n",
 					mmc_card_name(card));
 				kfree(mqrq_cur->bounce_buf);

drivers/mmc/card/sdio_uart.c

@@ -1082,7 +1082,7 @@ static int sdio_uart_probe(struct sdio_func *func,
 		return -ENOMEM;
 
 	if (func->class == SDIO_CLASS_UART) {
-		printk(KERN_WARNING "%s: need info on UART class basic setup\n",
+		pr_warning("%s: need info on UART class basic setup\n",
 		       sdio_func_id(func));
 		kfree(port);
 		return -ENOSYS;
@@ -1101,23 +1101,23 @@ static int sdio_uart_probe(struct sdio_func *func,
 				break;
 		}
 		if (!tpl) {
-			printk(KERN_WARNING
+			pr_warning(
        "%s: can't find tuple 0x91 subtuple 0 (SUBTPL_SIOREG) for GPS class\n",
 			       sdio_func_id(func));
 			kfree(port);
 			return -EINVAL;
 		}
-		printk(KERN_DEBUG "%s: Register ID = 0x%02x, Exp ID = 0x%02x\n",
+		pr_debug("%s: Register ID = 0x%02x, Exp ID = 0x%02x\n",
 		       sdio_func_id(func), tpl->data[2], tpl->data[3]);
 		port->regs_offset = (tpl->data[4] << 0) |
 				    (tpl->data[5] << 8) |
 				    (tpl->data[6] << 16);
-		printk(KERN_DEBUG "%s: regs offset = 0x%x\n",
+		pr_debug("%s: regs offset = 0x%x\n",
 		       sdio_func_id(func), port->regs_offset);
 		port->uartclk = tpl->data[7] * 115200;
 		if (port->uartclk == 0)
 			port->uartclk = 115200;
-		printk(KERN_DEBUG "%s: clk %d baudcode %u 4800-div %u\n",
+		pr_debug("%s: clk %d baudcode %u 4800-div %u\n",
 		       sdio_func_id(func), port->uartclk,
 		       tpl->data[7], tpl->data[8] | (tpl->data[9] << 8));
 	} else {

drivers/mmc/core/bus.c

@@ -295,7 +295,7 @@ int mmc_add_card(struct mmc_card *card)
 	}
 
 	if (mmc_host_is_spi(card->host)) {
-		printk(KERN_INFO "%s: new %s%s%s card on SPI\n",
+		pr_info("%s: new %s%s%s card on SPI\n",
 			mmc_hostname(card->host),
 			mmc_card_highspeed(card) ? "high speed " : "",
 			mmc_card_ddr_mode(card) ? "DDR " : "",
@@ -334,10 +334,10 @@ void mmc_remove_card(struct mmc_card *card)
 
 	if (mmc_card_present(card)) {
 		if (mmc_host_is_spi(card->host)) {
-			printk(KERN_INFO "%s: SPI card removed\n",
+			pr_info("%s: SPI card removed\n",
 				mmc_hostname(card->host));
 		} else {
-			printk(KERN_INFO "%s: card %04x removed\n",
+			pr_info("%s: card %04x removed\n",
 				mmc_hostname(card->host), card->rca);
 		}
 		device_del(&card->dev);

drivers/mmc/core/core.c

@@ -24,6 +24,8 @@
 #include <linux/regulator/consumer.h>
 #include <linux/pm_runtime.h>
 #include <linux/suspend.h>
+#include <linux/fault-inject.h>
+#include <linux/random.h>
 
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
@@ -83,6 +85,43 @@ static void mmc_flush_scheduled_work(void)
 	flush_workqueue(workqueue);
 }
 
+#ifdef CONFIG_FAIL_MMC_REQUEST
+
+/*
+ * Internal function. Inject random data errors.
+ * If mmc_data is NULL no errors are injected.
+ */
+static void mmc_should_fail_request(struct mmc_host *host,
+				    struct mmc_request *mrq)
+{
+	struct mmc_command *cmd = mrq->cmd;
+	struct mmc_data *data = mrq->data;
+	static const int data_errors[] = {
+		-ETIMEDOUT,
+		-EILSEQ,
+		-EIO,
+	};
+
+	if (!data)
+		return;
+
+	if (cmd->error || data->error ||
+	    !should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
+		return;
+
+	data->error = data_errors[random32() % ARRAY_SIZE(data_errors)];
+	data->bytes_xfered = (random32() % (data->bytes_xfered >> 9)) << 9;
+}
+
+#else /* CONFIG_FAIL_MMC_REQUEST */
+
+static inline void mmc_should_fail_request(struct mmc_host *host,
+					   struct mmc_request *mrq)
+{
+}
+
+#endif /* CONFIG_FAIL_MMC_REQUEST */
+
 /**
  *	mmc_request_done - finish processing an MMC request
  *	@host: MMC host which completed request
@@ -102,13 +141,15 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
 	}
 
 	if (err && cmd->retries) {
-		pr_debug("%s: req failed (CMD%u): %d, retrying...\n",
-			mmc_hostname(host), cmd->opcode, err);
-
-		cmd->retries--;
-		cmd->error = 0;
-		host->ops->request(host, mrq);
+		/*
+		 * Request starter must handle retries - see
+		 * mmc_wait_for_req_done().
+		 */
+		if (mrq->done)
+			mrq->done(mrq);
 	} else {
+		mmc_should_fail_request(host, mrq);
+
 		led_trigger_event(host->led, LED_OFF);
 
 		pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
@@ -212,7 +253,21 @@ static void __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
 static void mmc_wait_for_req_done(struct mmc_host *host,
 				  struct mmc_request *mrq)
 {
-	wait_for_completion(&mrq->completion);
+	struct mmc_command *cmd;
+
+	while (1) {
+		wait_for_completion(&mrq->completion);
+
+		cmd = mrq->cmd;
+		if (!cmd->error || !cmd->retries)
+			break;
+
+		pr_debug("%s: req failed (CMD%u): %d, retrying...\n",
+			 mmc_hostname(host), cmd->opcode, cmd->error);
+		cmd->retries--;
+		cmd->error = 0;
+		host->ops->request(host, mrq);
+	}
 }
 
 /**
@@ -279,8 +334,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
 		mmc_wait_for_req_done(host, host->areq->mrq);
 		err = host->areq->err_check(host->card, host->areq);
 		if (err) {
+			/* post process the completed failed request */
 			mmc_post_req(host, host->areq->mrq, 0);
 			if (areq)
+				/*
+				 * Cancel the new prepared request, because
+				 * it can't run until the failed
+				 * request has been properly handled.
+				 */
 				mmc_post_req(host, areq->mrq, -EINVAL);
 
 			host->areq = NULL;
@@ -318,6 +379,63 @@ void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
 }
 EXPORT_SYMBOL(mmc_wait_for_req);
 
+/**
+ *	mmc_interrupt_hpi - Issue for High priority Interrupt
+ *	@card: the MMC card associated with the HPI transfer
+ *
+ *	Issued High Priority Interrupt, and check for card status
+ *	util out-of prg-state.
+ */
+int mmc_interrupt_hpi(struct mmc_card *card)
+{
+	int err;
+	u32 status;
+
+	BUG_ON(!card);
+
+	if (!card->ext_csd.hpi_en) {
+		pr_info("%s: HPI enable bit unset\n", mmc_hostname(card->host));
+		return 1;
+	}
+
+	mmc_claim_host(card->host);
+	err = mmc_send_status(card, &status);
+	if (err) {
+		pr_err("%s: Get card status fail\n", mmc_hostname(card->host));
+		goto out;
+	}
+
+	/*
+	 * If the card status is in PRG-state, we can send the HPI command.
+	 */
+	if (R1_CURRENT_STATE(status) == R1_STATE_PRG) {
+		do {
+			/*
+			 * We don't know when the HPI command will finish
+			 * processing, so we need to resend HPI until out
+			 * of prg-state, and keep checking the card status
+			 * with SEND_STATUS.  If a timeout error occurs when
+			 * sending the HPI command, we are already out of
+			 * prg-state.
+			 */
+			err = mmc_send_hpi_cmd(card, &status);
+			if (err)
+				pr_debug("%s: abort HPI (%d error)\n",
+					 mmc_hostname(card->host), err);
+
+			err = mmc_send_status(card, &status);
+			if (err)
+				break;
+		} while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
+	} else
+		pr_debug("%s: Left prg-state\n", mmc_hostname(card->host));
+
+out:
+	mmc_release_host(card->host);
+	return err;
+}
+EXPORT_SYMBOL(mmc_interrupt_hpi);
+
 /**
  *	mmc_wait_for_cmd - start a command and wait for completion
  *	@host: MMC host to start command
@@ -330,7 +448,7 @@ EXPORT_SYMBOL(mmc_wait_for_req);
  */
 int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 
 	WARN_ON(!host->claimed);
 
@@ -1119,13 +1237,11 @@ static void mmc_power_up(struct mmc_host *host)
 		bit = fls(host->ocr_avail) - 1;
 
 	host->ios.vdd = bit;
-	if (mmc_host_is_spi(host)) {
+	if (mmc_host_is_spi(host))
 		host->ios.chip_select = MMC_CS_HIGH;
-		host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
-	} else {
+	else
 		host->ios.chip_select = MMC_CS_DONTCARE;
-		host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
-	}
+	host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
 	host->ios.power_mode = MMC_POWER_UP;
 	host->ios.bus_width = MMC_BUS_WIDTH_1;
 	host->ios.timing = MMC_TIMING_LEGACY;
@@ -1151,13 +1267,45 @@ static void mmc_power_up(struct mmc_host *host)
 	mmc_host_clk_release(host);
 }
 
-static void mmc_power_off(struct mmc_host *host)
+void mmc_power_off(struct mmc_host *host)
 {
+	struct mmc_card *card;
+	unsigned int notify_type;
+	unsigned int timeout;
+	int err;
+
 	mmc_host_clk_hold(host);
 
+	card = host->card;
 	host->ios.clock = 0;
 	host->ios.vdd = 0;
 
+	if (card && mmc_card_mmc(card) &&
+	    (card->poweroff_notify_state == MMC_POWERED_ON)) {
+
+		if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) {
+			notify_type = EXT_CSD_POWER_OFF_SHORT;
+			timeout = card->ext_csd.generic_cmd6_time;
+			card->poweroff_notify_state = MMC_POWEROFF_SHORT;
+		} else {
+			notify_type = EXT_CSD_POWER_OFF_LONG;
+			timeout = card->ext_csd.power_off_longtime;
+			card->poweroff_notify_state = MMC_POWEROFF_LONG;
+		}
+
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_POWER_OFF_NOTIFICATION,
+				 notify_type, timeout);
+
+		if (err && err != -EBADMSG)
+			pr_err("Device failed to respond within %d poweroff "
+			       "time. Forcefully powering down the device\n",
+			       timeout);
+
+		/* Set the card state to no notification after the poweroff */
+		card->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION;
+	}
+
 	/*
 	 * Reset ocr mask to be the highest possible voltage supported for
 	 * this mmc host. This value will be used at next power up.
@@ -1173,6 +1321,13 @@ static void mmc_power_off(struct mmc_host *host)
 	host->ios.timing = MMC_TIMING_LEGACY;
 	mmc_set_ios(host);
 
+	/*
+	 * Some configurations, such as the 802.11 SDIO card in the OLPC
+	 * XO-1.5, require a short delay after poweroff before the card
+	 * can be successfully turned on again.
+	 */
+	mmc_delay(1);
+
 	mmc_host_clk_release(host);
 }
 
@@ -1241,8 +1396,7 @@ void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops)
 }
 
 /*
- * Remove the current bus handler from a host. Assumes that there are
- * no interesting cards left, so the bus is powered down.
+ * Remove the current bus handler from a host.
  */
 void mmc_detach_bus(struct mmc_host *host)
 {
@@ -1259,8 +1413,6 @@ void mmc_detach_bus(struct mmc_host *host)
 
 	spin_unlock_irqrestore(&host->lock, flags);
 
-	mmc_power_off(host);
-
 	mmc_bus_put(host);
 }
 
@@ -1478,9 +1630,9 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
 	cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
 	err = mmc_wait_for_cmd(card->host, &cmd, 0);
 	if (err) {
-		printk(KERN_ERR "mmc_erase: group start error %d, "
+		pr_err("mmc_erase: group start error %d, "
 		       "status %#x\n", err, cmd.resp[0]);
-		err = -EINVAL;
+		err = -EIO;
 		goto out;
 	}
 
@@ -1493,9 +1645,9 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
 	cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
 	err = mmc_wait_for_cmd(card->host, &cmd, 0);
 	if (err) {
-		printk(KERN_ERR "mmc_erase: group end error %d, status %#x\n",
+		pr_err("mmc_erase: group end error %d, status %#x\n",
 		       err, cmd.resp[0]);
-		err = -EINVAL;
+		err = -EIO;
 		goto out;
 	}
 
@@ -1506,7 +1658,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
 	cmd.cmd_timeout_ms = mmc_erase_timeout(card, arg, qty);
 	err = mmc_wait_for_cmd(card->host, &cmd, 0);
 	if (err) {
-		printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n",
+		pr_err("mmc_erase: erase error %d, status %#x\n",
 		       err, cmd.resp[0]);
 		err = -EIO;
 		goto out;
@@ -1523,7 +1675,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
 		/* Do not retry else we can't see errors */
 		err = mmc_wait_for_cmd(card->host, &cmd, 0);
 		if (err || (cmd.resp[0] & 0xFDF92000)) {
-			printk(KERN_ERR "error %d requesting status %#x\n",
+			pr_err("error %d requesting status %#x\n",
 				err, cmd.resp[0]);
 			err = -EIO;
 			goto out;
@@ -1614,10 +1766,32 @@ int mmc_can_trim(struct mmc_card *card)
 {
 	if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN)
 		return 1;
+	if (mmc_can_discard(card))
+		return 1;
 	return 0;
 }
 EXPORT_SYMBOL(mmc_can_trim);
 
+int mmc_can_discard(struct mmc_card *card)
+{
+	/*
+	 * As there's no way to detect the discard support bit at v4.5
+	 * use the s/w feature support filed.
+	 */
+	if (card->ext_csd.feature_support & MMC_DISCARD_FEATURE)
+		return 1;
+	return 0;
+}
+EXPORT_SYMBOL(mmc_can_discard);
+
+int mmc_can_sanitize(struct mmc_card *card)
+{
+	if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_SANITIZE)
+		return 1;
+	return 0;
+}
+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)
@@ -1727,6 +1901,94 @@ int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
 }
 EXPORT_SYMBOL(mmc_set_blocklen);
 
+static void mmc_hw_reset_for_init(struct mmc_host *host)
+{
+	if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
+		return;
+	mmc_host_clk_hold(host);
+	host->ops->hw_reset(host);
+	mmc_host_clk_release(host);
+}
+
+int mmc_can_reset(struct mmc_card *card)
+{
+	u8 rst_n_function;
+
+	if (!mmc_card_mmc(card))
+		return 0;
+	rst_n_function = card->ext_csd.rst_n_function;
+	if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
+		return 0;
+	return 1;
+}
+EXPORT_SYMBOL(mmc_can_reset);
+
+static int mmc_do_hw_reset(struct mmc_host *host, int check)
+{
+	struct mmc_card *card = host->card;
+
+	if (!host->bus_ops->power_restore)
+		return -EOPNOTSUPP;
+
+	if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
+		return -EOPNOTSUPP;
+
+	if (!card)
+		return -EINVAL;
+
+	if (!mmc_can_reset(card))
+		return -EOPNOTSUPP;
+
+	mmc_host_clk_hold(host);
+	mmc_set_clock(host, host->f_init);
+
+	host->ops->hw_reset(host);
+
+	/* If the reset has happened, then a status command will fail */
+	if (check) {
+		struct mmc_command cmd = {0};
+		int err;
+
+		cmd.opcode = MMC_SEND_STATUS;
+		if (!mmc_host_is_spi(card->host))
+			cmd.arg = card->rca << 16;
+		cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
+		err = mmc_wait_for_cmd(card->host, &cmd, 0);
+		if (!err) {
+			mmc_host_clk_release(host);
+			return -ENOSYS;
+		}
+	}
+
+	host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_DDR);
+	if (mmc_host_is_spi(host)) {
+		host->ios.chip_select = MMC_CS_HIGH;
+		host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
+	} else {
+		host->ios.chip_select = MMC_CS_DONTCARE;
+		host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+	}
+	host->ios.bus_width = MMC_BUS_WIDTH_1;
+	host->ios.timing = MMC_TIMING_LEGACY;
+	mmc_set_ios(host);
+
+	mmc_host_clk_release(host);
+
+	return host->bus_ops->power_restore(host);
+}
+
+int mmc_hw_reset(struct mmc_host *host)
+{
+	return mmc_do_hw_reset(host, 0);
+}
+EXPORT_SYMBOL(mmc_hw_reset);
+
+int mmc_hw_reset_check(struct mmc_host *host)
+{
+	return mmc_do_hw_reset(host, 1);
+}
+EXPORT_SYMBOL(mmc_hw_reset_check);
+
 static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
 {
 	host->f_init = freq;
@@ -1737,6 +1999,12 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
 #endif
 	mmc_power_up(host);
 
+	/*
+	 * Some eMMCs (with VCCQ always on) may not be reset after power up, so
+	 * do a hardware reset if possible.
+	 */
+	mmc_hw_reset_for_init(host);
+
 	/*
 	 * sdio_reset sends CMD52 to reset card.  Since we do not know
 	 * if the card is being re-initialized, just send it.  CMD52
@@ -1845,6 +2113,7 @@ void mmc_stop_host(struct mmc_host *host)
 
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
+		mmc_power_off(host);
 		mmc_release_host(host);
 		mmc_bus_put(host);
 		return;
@@ -1946,6 +2215,65 @@ int mmc_card_can_sleep(struct mmc_host *host)
 }
 EXPORT_SYMBOL(mmc_card_can_sleep);
 
+/*
+ * Flush the cache to the non-volatile storage.
+ */
+int mmc_flush_cache(struct mmc_card *card)
+{
+	struct mmc_host *host = card->host;
+	int err = 0;
+
+	if (!(host->caps2 & MMC_CAP2_CACHE_CTRL))
+		return err;
+
+	if (mmc_card_mmc(card) &&
+			(card->ext_csd.cache_size > 0) &&
+			(card->ext_csd.cache_ctrl & 1)) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				EXT_CSD_FLUSH_CACHE, 1, 0);
+		if (err)
+			pr_err("%s: cache flush error %d\n",
+					mmc_hostname(card->host), err);
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(mmc_flush_cache);
+
+/*
+ * Turn the cache ON/OFF.
+ * Turning the cache OFF shall trigger flushing of the data
+ * to the non-volatile storage.
+ */
+int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
+{
+	struct mmc_card *card = host->card;
+	int err = 0;
+
+	if (!(host->caps2 & MMC_CAP2_CACHE_CTRL) ||
+			mmc_card_is_removable(host))
+		return err;
+
+	if (card && mmc_card_mmc(card) &&
+			(card->ext_csd.cache_size > 0)) {
+		enable = !!enable;
+
+		if (card->ext_csd.cache_ctrl ^ enable)
+			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+					EXT_CSD_CACHE_CTRL, enable, 0);
+		if (err)
+			pr_err("%s: cache %s error %d\n",
+					mmc_hostname(card->host),
+					enable ? "on" : "off",
+					err);
+		else
+			card->ext_csd.cache_ctrl = enable;
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(mmc_cache_ctrl);
+
 #ifdef CONFIG_PM
 
 /**
@@ -1960,23 +2288,39 @@ int mmc_suspend_host(struct mmc_host *host)
 		cancel_delayed_work(&host->disable);
 	cancel_delayed_work(&host->detect);
 	mmc_flush_scheduled_work();
+	err = mmc_cache_ctrl(host, 0);
+	if (err)
+		goto out;
 
 	mmc_bus_get(host);
 	if (host->bus_ops && !host->bus_dead) {
-		if (host->bus_ops->suspend)
-			err = host->bus_ops->suspend(host);
-		if (err == -ENOSYS || !host->bus_ops->resume) {
-			/*
-			 * We simply "remove" the card in this case.
-			 * It will be redetected on resume.
-			 */
-			if (host->bus_ops->remove)
-				host->bus_ops->remove(host);
-			mmc_claim_host(host);
-			mmc_detach_bus(host);
-			mmc_release_host(host);
-			host->pm_flags = 0;
-			err = 0;
+
+		/*
+		 * A long response time is not acceptable for device drivers
+		 * when doing suspend. Prevent mmc_claim_host in the suspend
+		 * sequence, to potentially wait "forever" by trying to
+		 * pre-claim the host.
+		 */
+		if (mmc_try_claim_host(host)) {
+			if (host->bus_ops->suspend)
+				err = host->bus_ops->suspend(host);
+			if (err == -ENOSYS || !host->bus_ops->resume) {
+				/*
+				 * We simply "remove" the card in this case.
+				 * It will be redetected on resume.
+				 */
+				if (host->bus_ops->remove)
+					host->bus_ops->remove(host);
+				mmc_claim_host(host);
+				mmc_detach_bus(host);
+				mmc_power_off(host);
+				mmc_release_host(host);
+				host->pm_flags = 0;
+				err = 0;
+			}
+			mmc_do_release_host(host);
+		} else {
+			err = -EBUSY;
 		}
 	}
 	mmc_bus_put(host);
@@ -1984,6 +2328,7 @@ int mmc_suspend_host(struct mmc_host *host)
 	if (!err && !mmc_card_keep_power(host))
 		mmc_power_off(host);
 
+out:
 	return err;
 }
 
@@ -2018,7 +2363,7 @@ int mmc_resume_host(struct mmc_host *host)
 		BUG_ON(!host->bus_ops->resume);
 		err = host->bus_ops->resume(host);
 		if (err) {
-			printk(KERN_WARNING "%s: error %d during resume "
+			pr_warning("%s: error %d during resume "
 					    "(card was removed?)\n",
 					    mmc_hostname(host), err);
 			err = 0;
@@ -2049,6 +2394,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
 
 		spin_lock_irqsave(&host->lock, flags);
 		host->rescan_disable = 1;
+		host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT;
 		spin_unlock_irqrestore(&host->lock, flags);
 		cancel_delayed_work_sync(&host->detect);
 
@@ -2061,6 +2407,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
 			host->bus_ops->remove(host);
 
 		mmc_detach_bus(host);
+		mmc_power_off(host);
 		mmc_release_host(host);
 		host->pm_flags = 0;
 		break;
@@ -2071,6 +2418,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
 
 		spin_lock_irqsave(&host->lock, flags);
 		host->rescan_disable = 0;
+		host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG;
 		spin_unlock_irqrestore(&host->lock, flags);
 		mmc_detect_change(host, 0);
 

drivers/mmc/core/core.h

@@ -43,6 +43,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage,
 			   bool cmd11);
 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
+void mmc_power_off(struct mmc_host *host);
 
 static inline void mmc_delay(unsigned int ms)
 {

drivers/mmc/core/debugfs.c

@@ -7,11 +7,13 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/moduleparam.h>
 #include <linux/debugfs.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
+#include <linux/fault-inject.h>
 
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
@@ -19,6 +21,14 @@
 #include "core.h"
 #include "mmc_ops.h"
 
+#ifdef CONFIG_FAIL_MMC_REQUEST
+
+static DECLARE_FAULT_ATTR(fail_default_attr);
+static char *fail_request;
+module_param(fail_request, charp, 0);
+
+#endif /* CONFIG_FAIL_MMC_REQUEST */
+
 /* The debugfs functions are optimized away when CONFIG_DEBUG_FS isn't set. */
 static int mmc_ios_show(struct seq_file *s, void *data)
 {
@@ -113,6 +123,15 @@ static int mmc_ios_show(struct seq_file *s, void *data)
 	case MMC_TIMING_SD_HS:
 		str = "sd high-speed";
 		break;
+	case MMC_TIMING_UHS_SDR50:
+		str = "sd uhs SDR50";
+		break;
+	case MMC_TIMING_UHS_SDR104:
+		str = "sd uhs SDR104";
+		break;
+	case MMC_TIMING_UHS_DDR50:
+		str = "sd uhs DDR50";
+		break;
 	default:
 		str = "invalid";
 		break;
@@ -187,6 +206,15 @@ void mmc_add_host_debugfs(struct mmc_host *host)
 	if (!debugfs_create_u32("clk_delay", (S_IRUSR | S_IWUSR),
 				root, &host->clk_delay))
 		goto err_node;
+#endif
+#ifdef CONFIG_FAIL_MMC_REQUEST
+	if (fail_request)
+		setup_fault_attr(&fail_default_attr, fail_request);
+	host->fail_mmc_request = fail_default_attr;
+	if (IS_ERR(fault_create_debugfs_attr("fail_mmc_request",
+					     root,
+					     &host->fail_mmc_request)))
+		goto err_node;
 #endif
 	return;
 

drivers/mmc/core/host.c

@@ -301,6 +301,17 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 	host->max_blk_size = 512;
 	host->max_blk_count = PAGE_CACHE_SIZE / 512;
 
+	/*
+	 * Enable runtime power management by default. This flag was added due
+	 * to runtime power management causing disruption for some users, but
+	 * the power on/off code has been improved since then.
+	 *
+	 * We'll enable this flag by default as an experiment, and if no
+	 * problems are reported, we will follow up later and remove the flag
+	 * altogether.
+	 */
+	host->caps = MMC_CAP_POWER_OFF_CARD;
+
 	return host;
 
 free:

drivers/mmc/core/mmc.c

@@ -101,7 +101,7 @@ static int mmc_decode_cid(struct mmc_card *card)
 		break;
 
 	default:
-		printk(KERN_ERR "%s: card has unknown MMCA version %d\n",
+		pr_err("%s: card has unknown MMCA version %d\n",
 			mmc_hostname(card->host), card->csd.mmca_vsn);
 		return -EINVAL;
 	}
@@ -135,7 +135,7 @@ static int mmc_decode_csd(struct mmc_card *card)
 	 */
 	csd->structure = UNSTUFF_BITS(resp, 126, 2);
 	if (csd->structure == 0) {
-		printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
+		pr_err("%s: unrecognised CSD structure version %d\n",
 			mmc_hostname(card->host), csd->structure);
 		return -EINVAL;
 	}
@@ -195,7 +195,7 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
 	 */
 	ext_csd = kmalloc(512, GFP_KERNEL);
 	if (!ext_csd) {
-		printk(KERN_ERR "%s: could not allocate a buffer to "
+		pr_err("%s: could not allocate a buffer to "
 			"receive the ext_csd.\n", mmc_hostname(card->host));
 		return -ENOMEM;
 	}
@@ -217,12 +217,12 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
 		 * stored in their CSD.
 		 */
 		if (card->csd.capacity == (4096 * 512)) {
-			printk(KERN_ERR "%s: unable to read EXT_CSD "
+			pr_err("%s: unable to read EXT_CSD "
 				"on a possible high capacity card. "
 				"Card will be ignored.\n",
 				mmc_hostname(card->host));
 		} else {
-			printk(KERN_WARNING "%s: unable to read "
+			pr_warning("%s: unable to read "
 				"EXT_CSD, performance might "
 				"suffer.\n",
 				mmc_hostname(card->host));
@@ -239,7 +239,9 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
  */
 static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 {
-	int err = 0;
+	int err = 0, idx;
+	unsigned int part_size;
+	u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0;
 
 	BUG_ON(!card);
 
@@ -250,7 +252,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 	card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
 	if (card->csd.structure == 3) {
 		if (card->ext_csd.raw_ext_csd_structure > 2) {
-			printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
+			pr_err("%s: unrecognised EXT_CSD structure "
 				"version %d\n", mmc_hostname(card->host),
 					card->ext_csd.raw_ext_csd_structure);
 			err = -EINVAL;
@@ -260,7 +262,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 
 	card->ext_csd.rev = ext_csd[EXT_CSD_REV];
 	if (card->ext_csd.rev > 6) {
-		printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
+		pr_err("%s: unrecognised EXT_CSD revision %d\n",
 			mmc_hostname(card->host), card->ext_csd.rev);
 		err = -EINVAL;
 		goto out;
@@ -306,7 +308,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		break;
 	default:
 		/* MMC v4 spec says this cannot happen */
-		printk(KERN_WARNING "%s: card is mmc v4 but doesn't "
+		pr_warning("%s: card is mmc v4 but doesn't "
 			"support any high-speed modes.\n",
 			mmc_hostname(card->host));
 	}
@@ -340,7 +342,14 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		 * There are two boot regions of equal size, defined in
 		 * multiples of 128K.
 		 */
-		card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
+		if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
+			for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
+				part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
+				mmc_part_add(card, part_size,
+					EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
+					"boot%d", idx, true);
+			}
+		}
 	}
 
 	card->ext_csd.raw_hc_erase_gap_size =
@@ -359,11 +368,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		 * card has the Enhanced area enabled.  If so, export enhanced
 		 * area offset and size to user by adding sysfs interface.
 		 */
+		card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
 		if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
 		    (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
-			u8 hc_erase_grp_sz =
+			hc_erase_grp_sz =
 				ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
-			u8 hc_wp_grp_sz =
+			hc_wp_grp_sz =
 				ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
 
 			card->ext_csd.enhanced_area_en = 1;
@@ -392,6 +402,41 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 			card->ext_csd.enhanced_area_offset = -EINVAL;
 			card->ext_csd.enhanced_area_size = -EINVAL;
 		}
+
+		/*
+		 * General purpose partition feature support --
+		 * If ext_csd has the size of general purpose partitions,
+		 * set size, part_cfg, partition name in mmc_part.
+		 */
+		if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
+			EXT_CSD_PART_SUPPORT_PART_EN) {
+			if (card->ext_csd.enhanced_area_en != 1) {
+				hc_erase_grp_sz =
+					ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
+				hc_wp_grp_sz =
+					ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
+
+				card->ext_csd.enhanced_area_en = 1;
+			}
+
+			for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
+				if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
+				!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
+				!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
+					continue;
+				part_size =
+				(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
+					<< 16) +
+				(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
+					<< 8) +
+				ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
+				part_size *= (size_t)(hc_erase_grp_sz *
+					hc_wp_grp_sz);
+				mmc_part_add(card, part_size << 19,
+					EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
+					"gp%d", idx, false);
+			}
+		}
 		card->ext_csd.sec_trim_mult =
 			ext_csd[EXT_CSD_SEC_TRIM_MULT];
 		card->ext_csd.sec_erase_mult =
@@ -402,14 +447,48 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 			ext_csd[EXT_CSD_TRIM_MULT];
 	}
 
-	if (card->ext_csd.rev >= 5)
+	if (card->ext_csd.rev >= 5) {
+		/* check whether the eMMC card supports HPI */
+		if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) {
+			card->ext_csd.hpi = 1;
+			if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
+				card->ext_csd.hpi_cmd =	MMC_STOP_TRANSMISSION;
+			else
+				card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
+			/*
+			 * Indicate the maximum timeout to close
+			 * a command interrupted by HPI
+			 */
+			card->ext_csd.out_of_int_time =
+				ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
+		}
+
 		card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
+		card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
+	}
 
+	card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
 	if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
 		card->erased_byte = 0xFF;
 	else
 		card->erased_byte = 0x0;
 
+	/* eMMC v4.5 or later */
+	if (card->ext_csd.rev >= 6) {
+		card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
+
+		card->ext_csd.generic_cmd6_time = 10 *
+			ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
+		card->ext_csd.power_off_longtime = 10 *
+			ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
+
+		card->ext_csd.cache_size =
+			ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
+			ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
+			ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
+			ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
+	}
+
 out:
 	return err;
 }
@@ -529,6 +608,86 @@ static struct device_type mmc_type = {
 	.groups = mmc_attr_groups,
 };
 
+/*
+ * Select the PowerClass for the current bus width
+ * If power class is defined for 4/8 bit bus in the
+ * extended CSD register, select it by executing the
+ * mmc_switch command.
+ */
+static int mmc_select_powerclass(struct mmc_card *card,
+		unsigned int bus_width, u8 *ext_csd)
+{
+	int err = 0;
+	unsigned int pwrclass_val;
+	unsigned int index = 0;
+	struct mmc_host *host;
+
+	BUG_ON(!card);
+
+	host = card->host;
+	BUG_ON(!host);
+
+	if (ext_csd == NULL)
+		return 0;
+
+	/* Power class selection is supported for versions >= 4.0 */
+	if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
+		return 0;
+
+	/* Power class values are defined only for 4/8 bit bus */
+	if (bus_width == EXT_CSD_BUS_WIDTH_1)
+		return 0;
+
+	switch (1 << host->ios.vdd) {
+	case MMC_VDD_165_195:
+		if (host->ios.clock <= 26000000)
+			index = EXT_CSD_PWR_CL_26_195;
+		else if	(host->ios.clock <= 52000000)
+			index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+				EXT_CSD_PWR_CL_52_195 :
+				EXT_CSD_PWR_CL_DDR_52_195;
+		else if (host->ios.clock <= 200000000)
+			index = EXT_CSD_PWR_CL_200_195;
+		break;
+	case MMC_VDD_32_33:
+	case MMC_VDD_33_34:
+	case MMC_VDD_34_35:
+	case MMC_VDD_35_36:
+		if (host->ios.clock <= 26000000)
+			index = EXT_CSD_PWR_CL_26_360;
+		else if	(host->ios.clock <= 52000000)
+			index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+				EXT_CSD_PWR_CL_52_360 :
+				EXT_CSD_PWR_CL_DDR_52_360;
+		else if (host->ios.clock <= 200000000)
+			index = EXT_CSD_PWR_CL_200_360;
+		break;
+	default:
+		pr_warning("%s: Voltage range not supported "
+			   "for power class.\n", mmc_hostname(host));
+		return -EINVAL;
+	}
+
+	pwrclass_val = ext_csd[index];
+
+	if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8))
+		pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >>
+				EXT_CSD_PWR_CL_8BIT_SHIFT;
+	else
+		pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >>
+				EXT_CSD_PWR_CL_4BIT_SHIFT;
+
+	/* If the power class is different from the default value */
+	if (pwrclass_val > 0) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_POWER_CLASS,
+				 pwrclass_val,
+				 card->ext_csd.generic_cmd6_time);
+	}
+
+	return err;
+}
+
 /*
  * Handle the detection and initialisation of a card.
  *
@@ -548,11 +707,16 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	BUG_ON(!host);
 	WARN_ON(!host->claimed);
 
+	/* Set correct bus mode for MMC before attempting init */
+	if (!mmc_host_is_spi(host))
+		mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
+
 	/*
 	 * Since we're changing the OCR value, we seem to
 	 * need to tell some cards to go back to the idle
 	 * state.  We wait 1ms to give cards time to
 	 * respond.
+	 * mmc_go_idle is needed for eMMC that are asleep
 	 */
 	mmc_go_idle(host);
 
@@ -668,7 +832,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	 */
 	if (card->ext_csd.enhanced_area_en) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
-				 EXT_CSD_ERASE_GROUP_DEF, 1, 0);
+				 EXT_CSD_ERASE_GROUP_DEF, 1,
+				 card->ext_csd.generic_cmd6_time);
 
 		if (err && err != -EBADMSG)
 			goto free_card;
@@ -705,18 +870,36 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			goto free_card;
 	}
 
+	/*
+	 * If the host supports the power_off_notify capability then
+	 * set the notification byte in the ext_csd register of device
+	 */
+	if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) &&
+	    (card->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION)) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_POWER_OFF_NOTIFICATION,
+				 EXT_CSD_POWER_ON,
+				 card->ext_csd.generic_cmd6_time);
+		if (err && err != -EBADMSG)
+			goto free_card;
+	}
+
+	if (!err)
+		card->poweroff_notify_state = MMC_POWERED_ON;
+
 	/*
 	 * Activate high speed (if supported)
 	 */
 	if ((card->ext_csd.hs_max_dtr != 0) &&
 		(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
-				 EXT_CSD_HS_TIMING, 1, 0);
+				 EXT_CSD_HS_TIMING, 1,
+				 card->ext_csd.generic_cmd6_time);
 		if (err && err != -EBADMSG)
 			goto free_card;
 
 		if (err) {
-			printk(KERN_WARNING "%s: switch to highspeed failed\n",
+			pr_warning("%s: switch to highspeed failed\n",
 			       mmc_hostname(card->host));
 			err = 0;
 		} else {
@@ -725,6 +908,22 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		}
 	}
 
+	/*
+	 * Enable HPI feature (if supported)
+	 */
+	if (card->ext_csd.hpi) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+			EXT_CSD_HPI_MGMT, 1, 0);
+		if (err && err != -EBADMSG)
+			goto free_card;
+		if (err) {
+			pr_warning("%s: Enabling HPI failed\n",
+				   mmc_hostname(card->host));
+			err = 0;
+		} else
+			card->ext_csd.hpi_en = 1;
+	}
+
 	/*
 	 * Compute bus speed.
 	 */
@@ -780,10 +979,18 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			bus_width = bus_widths[idx];
 			if (bus_width == MMC_BUS_WIDTH_1)
 				ddr = 0; /* no DDR for 1-bit width */
+			err = mmc_select_powerclass(card, ext_csd_bits[idx][0],
+						    ext_csd);
+			if (err)
+				pr_err("%s: power class selection to "
+				       "bus width %d failed\n",
+				       mmc_hostname(card->host),
+				       1 << bus_width);
+
 			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 					 EXT_CSD_BUS_WIDTH,
 					 ext_csd_bits[idx][0],
-					 0);
+					 card->ext_csd.generic_cmd6_time);
 			if (!err) {
 				mmc_set_bus_width(card->host, bus_width);
 
@@ -803,13 +1010,21 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		}
 
 		if (!err && ddr) {
+			err = mmc_select_powerclass(card, ext_csd_bits[idx][1],
+						    ext_csd);
+			if (err)
+				pr_err("%s: power class selection to "
+				       "bus width %d ddr %d failed\n",
+				       mmc_hostname(card->host),
+				       1 << bus_width, ddr);
+
 			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 					 EXT_CSD_BUS_WIDTH,
 					 ext_csd_bits[idx][1],
-					 0);
+					 card->ext_csd.generic_cmd6_time);
 		}
 		if (err) {
-			printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
+			pr_warning("%s: switch to bus width %d ddr %d "
 				"failed\n", mmc_hostname(card->host),
 				1 << bus_width, ddr);
 			goto free_card;
@@ -840,6 +1055,23 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		}
 	}
 
+	/*
+	 * If cache size is higher than 0, this indicates
+	 * the existence of cache and it can be turned on.
+	 */
+	if ((host->caps2 & MMC_CAP2_CACHE_CTRL) &&
+			card->ext_csd.cache_size > 0) {
+		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				EXT_CSD_CACHE_CTRL, 1, 0);
+		if (err && err != -EBADMSG)
+			goto free_card;
+
+		/*
+		 * Only if no error, cache is turned on successfully.
+		 */
+		card->ext_csd.cache_ctrl = err ? 0 : 1;
+	}
+
 	if (!oldcard)
 		host->card = card;
 
@@ -891,6 +1123,7 @@ static void mmc_detect(struct mmc_host *host)
 
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
+		mmc_power_off(host);
 		mmc_release_host(host);
 	}
 }
@@ -900,16 +1133,20 @@ static void mmc_detect(struct mmc_host *host)
  */
 static int mmc_suspend(struct mmc_host *host)
 {
+	int err = 0;
+
 	BUG_ON(!host);
 	BUG_ON(!host->card);
 
 	mmc_claim_host(host);
-	if (!mmc_host_is_spi(host))
+	if (mmc_card_can_sleep(host))
+		err = mmc_card_sleep(host);
+	else if (!mmc_host_is_spi(host))
 		mmc_deselect_cards(host);
 	host->card->state &= ~MMC_STATE_HIGHSPEED;
 	mmc_release_host(host);
 
-	return 0;
+	return err;
 }
 
 /*
@@ -1016,6 +1253,10 @@ int mmc_attach_mmc(struct mmc_host *host)
 	BUG_ON(!host);
 	WARN_ON(!host->claimed);
 
+	/* Set correct bus mode for MMC before attempting attach */
+	if (!mmc_host_is_spi(host))
+		mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
+
 	err = mmc_send_op_cond(host, 0, &ocr);
 	if (err)
 		return err;
@@ -1038,7 +1279,7 @@ int mmc_attach_mmc(struct mmc_host *host)
 	 * support.
 	 */
 	if (ocr & 0x7F) {
-		printk(KERN_WARNING "%s: card claims to support voltages "
+		pr_warning("%s: card claims to support voltages "
 		       "below the defined range. These will be ignored.\n",
 		       mmc_hostname(host));
 		ocr &= ~0x7F;
@@ -1077,7 +1318,7 @@ remove_card:
 err:
 	mmc_detach_bus(host);
 
-	printk(KERN_ERR "%s: error %d whilst initialising MMC card\n",
+	pr_err("%s: error %d whilst initialising MMC card\n",
 		mmc_hostname(host), err);
 
 	return err;

drivers/mmc/core/mmc_ops.c

@@ -233,7 +233,7 @@ static int
 mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
 		u32 opcode, void *buf, unsigned len)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;
@@ -414,7 +414,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
 			return -EBADMSG;
 	} else {
 		if (status & 0xFDFFA000)
-			printk(KERN_WARNING "%s: unexpected status %#x after "
+			pr_warning("%s: unexpected status %#x after "
 			       "switch", mmc_hostname(card->host), status);
 		if (status & R1_SWITCH_ERROR)
 			return -EBADMSG;
@@ -454,7 +454,7 @@ static int
 mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
 		  u8 len)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;
@@ -476,7 +476,7 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
 	else if (len == 4)
 		test_buf = testdata_4bit;
 	else {
-		printk(KERN_ERR "%s: Invalid bus_width %d\n",
+		pr_err("%s: Invalid bus_width %d\n",
 		       mmc_hostname(host), len);
 		kfree(data_buf);
 		return -EINVAL;
@@ -547,3 +547,34 @@ int mmc_bus_test(struct mmc_card *card, u8 bus_width)
 	err = mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width);
 	return err;
 }
+
+int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status)
+{
+	struct mmc_command cmd = {0};
+	unsigned int opcode;
+	unsigned int flags;
+	int err;
+
+	opcode = card->ext_csd.hpi_cmd;
+	if (opcode == MMC_STOP_TRANSMISSION)
+		flags = MMC_RSP_R1 | MMC_CMD_AC;
+	else if (opcode == MMC_SEND_STATUS)
+		flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+	cmd.opcode = opcode;
+	cmd.arg = card->rca << 16 | 1;
+	cmd.flags = flags;
+	cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time;
+
+	err = mmc_wait_for_cmd(card->host, &cmd, 0);
+	if (err) {
+		pr_warn("%s: error %d interrupting operation. "
+			"HPI command response %#x\n", mmc_hostname(card->host),
+			err, cmd.resp[0]);
+		return err;
+	}
+	if (status)
+		*status = cmd.resp[0];
+
+	return 0;
+}

drivers/mmc/core/mmc_ops.h

@@ -26,6 +26,7 @@ int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
 int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
 int mmc_card_sleepawake(struct mmc_host *host, int sleep);
 int mmc_bus_test(struct mmc_card *card, u8 bus_width);
+int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status);
 
 #endif
 

drivers/mmc/core/quirks.c

@@ -21,6 +21,14 @@
 #define SDIO_DEVICE_ID_TI_WL1271	0x4076
 #endif
 
+#ifndef SDIO_VENDOR_ID_STE
+#define SDIO_VENDOR_ID_STE		0x0020
+#endif
+
+#ifndef SDIO_DEVICE_ID_STE_CW1200
+#define SDIO_DEVICE_ID_STE_CW1200	0x2280
+#endif
+
 /*
  * This hook just adds a quirk for all sdio devices
  */
@@ -46,6 +54,9 @@ static const struct mmc_fixup mmc_fixup_methods[] = {
 	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
 		   add_quirk, MMC_QUIRK_DISABLE_CD),
 
+	SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
+		   add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
+
 	END_FIXUP
 };
 

drivers/mmc/core/sd.c

@@ -163,7 +163,7 @@ static int mmc_decode_csd(struct mmc_card *card)
 		csd->erase_size = 1;
 		break;
 	default:
-		printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
+		pr_err("%s: unrecognised CSD structure version %d\n",
 			mmc_hostname(card->host), csd_struct);
 		return -EINVAL;
 	}
@@ -187,7 +187,7 @@ static int mmc_decode_scr(struct mmc_card *card)
 
 	scr_struct = UNSTUFF_BITS(resp, 60, 4);
 	if (scr_struct != 0) {
-		printk(KERN_ERR "%s: unrecognised SCR structure version %d\n",
+		pr_err("%s: unrecognised SCR structure version %d\n",
 			mmc_hostname(card->host), scr_struct);
 		return -EINVAL;
 	}
@@ -218,7 +218,7 @@ static int mmc_read_ssr(struct mmc_card *card)
 	u32 *ssr;
 
 	if (!(card->csd.cmdclass & CCC_APP_SPEC)) {
-		printk(KERN_WARNING "%s: card lacks mandatory SD Status "
+		pr_warning("%s: card lacks mandatory SD Status "
 			"function.\n", mmc_hostname(card->host));
 		return 0;
 	}
@@ -229,7 +229,7 @@ static int mmc_read_ssr(struct mmc_card *card)
 
 	err = mmc_app_sd_status(card, ssr);
 	if (err) {
-		printk(KERN_WARNING "%s: problem reading SD Status "
+		pr_warning("%s: problem reading SD Status "
 			"register.\n", mmc_hostname(card->host));
 		err = 0;
 		goto out;
@@ -253,7 +253,7 @@ static int mmc_read_ssr(struct mmc_card *card)
 			card->ssr.erase_offset = eo * 1000;
 		}
 	} else {
-		printk(KERN_WARNING "%s: SD Status: Invalid Allocation Unit "
+		pr_warning("%s: SD Status: Invalid Allocation Unit "
 			"size.\n", mmc_hostname(card->host));
 	}
 out:
@@ -273,7 +273,7 @@ static int mmc_read_switch(struct mmc_card *card)
 		return 0;
 
 	if (!(card->csd.cmdclass & CCC_SWITCH)) {
-		printk(KERN_WARNING "%s: card lacks mandatory switch "
+		pr_warning("%s: card lacks mandatory switch "
 			"function, performance might suffer.\n",
 			mmc_hostname(card->host));
 		return 0;
@@ -283,7 +283,7 @@ static int mmc_read_switch(struct mmc_card *card)
 
 	status = kmalloc(64, GFP_KERNEL);
 	if (!status) {
-		printk(KERN_ERR "%s: could not allocate a buffer for "
+		pr_err("%s: could not allocate a buffer for "
 			"switch capabilities.\n",
 			mmc_hostname(card->host));
 		return -ENOMEM;
@@ -299,13 +299,16 @@ static int mmc_read_switch(struct mmc_card *card)
 		if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
 			goto out;
 
-		printk(KERN_WARNING "%s: problem reading Bus Speed modes.\n",
+		pr_warning("%s: problem reading Bus Speed modes.\n",
 			mmc_hostname(card->host));
 		err = 0;
 
 		goto out;
 	}
 
+	if (status[13] & UHS_SDR50_BUS_SPEED)
+		card->sw_caps.hs_max_dtr = 50000000;
+
 	if (card->scr.sda_spec3) {
 		card->sw_caps.sd3_bus_mode = status[13];
 
@@ -319,7 +322,7 @@ static int mmc_read_switch(struct mmc_card *card)
 			if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
 				goto out;
 
-			printk(KERN_WARNING "%s: problem reading "
+			pr_warning("%s: problem reading "
 				"Driver Strength.\n",
 				mmc_hostname(card->host));
 			err = 0;
@@ -339,7 +342,7 @@ static int mmc_read_switch(struct mmc_card *card)
 			if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
 				goto out;
 
-			printk(KERN_WARNING "%s: problem reading "
+			pr_warning("%s: problem reading "
 				"Current Limit.\n",
 				mmc_hostname(card->host));
 			err = 0;
@@ -348,9 +351,6 @@ static int mmc_read_switch(struct mmc_card *card)
 		}
 
 		card->sw_caps.sd3_curr_limit = status[7];
-	} else {
-		if (status[13] & 0x02)
-			card->sw_caps.hs_max_dtr = 50000000;
 	}
 
 out:
@@ -383,7 +383,7 @@ int mmc_sd_switch_hs(struct mmc_card *card)
 
 	status = kmalloc(64, GFP_KERNEL);
 	if (!status) {
-		printk(KERN_ERR "%s: could not allocate a buffer for "
+		pr_err("%s: could not allocate a buffer for "
 			"switch capabilities.\n", mmc_hostname(card->host));
 		return -ENOMEM;
 	}
@@ -393,7 +393,7 @@ int mmc_sd_switch_hs(struct mmc_card *card)
 		goto out;
 
 	if ((status[16] & 0xF) != 1) {
-		printk(KERN_WARNING "%s: Problem switching card "
+		pr_warning("%s: Problem switching card "
 			"into high-speed mode!\n",
 			mmc_hostname(card->host));
 		err = 0;
@@ -459,7 +459,7 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status)
 		return err;
 
 	if ((status[15] & 0xF) != drive_strength) {
-		printk(KERN_WARNING "%s: Problem setting drive strength!\n",
+		pr_warning("%s: Problem setting drive strength!\n",
 			mmc_hostname(card->host));
 		return 0;
 	}
@@ -538,7 +538,7 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
 		return err;
 
 	if ((status[16] & 0xF) != card->sd_bus_speed)
-		printk(KERN_WARNING "%s: Problem setting bus speed mode!\n",
+		pr_warning("%s: Problem setting bus speed mode!\n",
 			mmc_hostname(card->host));
 	else {
 		mmc_set_timing(card->host, timing);
@@ -600,7 +600,7 @@ static int sd_set_current_limit(struct mmc_card *card, u8 *status)
 		return err;
 
 	if (((status[15] >> 4) & 0x0F) != current_limit)
-		printk(KERN_WARNING "%s: Problem setting current limit!\n",
+		pr_warning("%s: Problem setting current limit!\n",
 			mmc_hostname(card->host));
 
 	return 0;
@@ -622,7 +622,7 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
 
 	status = kmalloc(64, GFP_KERNEL);
 	if (!status) {
-		printk(KERN_ERR "%s: could not allocate a buffer for "
+		pr_err("%s: could not allocate a buffer for "
 			"switch capabilities.\n", mmc_hostname(card->host));
 		return -ENOMEM;
 	}
@@ -852,7 +852,7 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
 			ro = host->ops->get_ro(host);
 
 		if (ro < 0) {
-			printk(KERN_WARNING "%s: host does not "
+			pr_warning("%s: host does not "
 				"support reading read-only "
 				"switch. assuming write-enable.\n",
 				mmc_hostname(host));
@@ -929,8 +929,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
 		err = mmc_send_relative_addr(host, &card->rca);
 		if (err)
 			return err;
-
-		mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
 	}
 
 	if (!oldcard) {
@@ -1043,6 +1041,7 @@ static void mmc_sd_detect(struct mmc_host *host)
 
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
+		mmc_power_off(host);
 		mmc_release_host(host);
 	}
 }
@@ -1167,7 +1166,7 @@ int mmc_attach_sd(struct mmc_host *host)
 	 * support.
 	 */
 	if (ocr & 0x7F) {
-		printk(KERN_WARNING "%s: card claims to support voltages "
+		pr_warning("%s: card claims to support voltages "
 		       "below the defined range. These will be ignored.\n",
 		       mmc_hostname(host));
 		ocr &= ~0x7F;
@@ -1175,7 +1174,7 @@ int mmc_attach_sd(struct mmc_host *host)
 
 	if ((ocr & MMC_VDD_165_195) &&
 	    !(host->ocr_avail_sd & MMC_VDD_165_195)) {
-		printk(KERN_WARNING "%s: SD card claims to support the "
+		pr_warning("%s: SD card claims to support the "
 		       "incompletely defined 'low voltage range'. This "
 		       "will be ignored.\n", mmc_hostname(host));
 		ocr &= ~MMC_VDD_165_195;
@@ -1214,7 +1213,7 @@ remove_card:
 err:
 	mmc_detach_bus(host);
 
-	printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
+	pr_err("%s: error %d whilst initialising SD card\n",
 		mmc_hostname(host), err);
 
 	return err;

drivers/mmc/core/sd_ops.c

@@ -67,7 +67,7 @@ EXPORT_SYMBOL_GPL(mmc_app_cmd);
 int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
 	struct mmc_command *cmd, int retries)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 
 	int i, err;
 
@@ -244,7 +244,7 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
 int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
 {
 	int err;
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;
@@ -303,7 +303,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
 int mmc_sd_switch(struct mmc_card *card, int mode, int group,
 	u8 value, u8 *resp)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;
@@ -348,7 +348,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
 int mmc_app_sd_status(struct mmc_card *card, void *ssr)
 {
 	int err;
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;

drivers/mmc/core/sdio.c

@@ -111,8 +111,8 @@ static int sdio_read_cccr(struct mmc_card *card)
 
 	cccr_vsn = data & 0x0f;
 
-	if (cccr_vsn > SDIO_CCCR_REV_1_20) {
-		printk(KERN_ERR "%s: unrecognised CCCR structure version %d\n",
+	if (cccr_vsn > SDIO_CCCR_REV_3_00) {
+		pr_err("%s: unrecognised CCCR structure version %d\n",
 			mmc_hostname(card->host), cccr_vsn);
 		return -EINVAL;
 	}
@@ -408,8 +408,6 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 		 */
 		if (oldcard)
 			oldcard->rca = card->rca;
-
-		mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
 	}
 
 	/*
@@ -597,6 +595,7 @@ out:
 
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
+		mmc_power_off(host);
 		mmc_release_host(host);
 	}
 }
@@ -778,7 +777,7 @@ int mmc_attach_sdio(struct mmc_host *host)
 	 * support.
 	 */
 	if (ocr & 0x7F) {
-		printk(KERN_WARNING "%s: card claims to support voltages "
+		pr_warning("%s: card claims to support voltages "
 		       "below the defined range. These will be ignored.\n",
 		       mmc_hostname(host));
 		ocr &= ~0x7F;
@@ -875,7 +874,7 @@ remove:
 err:
 	mmc_detach_bus(host);
 
-	printk(KERN_ERR "%s: error %d whilst initialising SDIO card\n",
+	pr_err("%s: error %d whilst initialising SDIO card\n",
 		mmc_hostname(host), err);
 
 	return err;

drivers/mmc/core/sdio_bus.c

@@ -173,7 +173,7 @@ static int sdio_bus_remove(struct device *dev)
 	drv->remove(func);
 
 	if (func->irq_handler) {
-		printk(KERN_WARNING "WARNING: driver %s did not remove "
+		pr_warning("WARNING: driver %s did not remove "
 			"its interrupt handler!\n", drv->name);
 		sdio_claim_host(func);
 		sdio_release_irq(func);

drivers/mmc/core/sdio_cis.c

@@ -132,7 +132,7 @@ static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
 			ret = -EINVAL;
 		}
 		if (ret && ret != -EILSEQ && ret != -ENOENT) {
-			printk(KERN_ERR "%s: bad %s tuple 0x%02x (%u bytes)\n",
+			pr_err("%s: bad %s tuple 0x%02x (%u bytes)\n",
 			       mmc_hostname(card->host), tpl_descr, code, size);
 		}
 	} else {
@@ -313,7 +313,7 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
 
 			if (ret == -ENOENT) {
 				/* warn about unknown tuples */
-				printk(KERN_WARNING "%s: queuing unknown"
+				pr_warning("%s: queuing unknown"
 				       " CIS tuple 0x%02x (%u bytes)\n",
 				       mmc_hostname(card->host),
 				       tpl_code, tpl_link);

drivers/mmc/core/sdio_irq.c

@@ -45,7 +45,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
 
 	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, &pending);
 	if (ret) {
-		printk(KERN_DEBUG "%s: error %d reading SDIO_CCCR_INTx\n",
+		pr_debug("%s: error %d reading SDIO_CCCR_INTx\n",
 		       mmc_card_id(card), ret);
 		return ret;
 	}
@@ -55,7 +55,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
 		if (pending & (1 << i)) {
 			func = card->sdio_func[i - 1];
 			if (!func) {
-				printk(KERN_WARNING "%s: pending IRQ for "
+				pr_warning("%s: pending IRQ for "
 					"non-existent function\n",
 					mmc_card_id(card));
 				ret = -EINVAL;
@@ -63,7 +63,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
 				func->irq_handler(func);
 				count++;
 			} else {
-				printk(KERN_WARNING "%s: pending IRQ with no handler\n",
+				pr_warning("%s: pending IRQ with no handler\n",
 				       sdio_func_id(func));
 				ret = -EINVAL;
 			}

drivers/mmc/core/sdio_ops.c

@@ -121,7 +121,7 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
 int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
 	unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
 {
-	struct mmc_request mrq = {0};
+	struct mmc_request mrq = {NULL};
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct scatterlist sg;
@@ -144,8 +144,11 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
 	cmd.arg |= fn << 28;
 	cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
 	cmd.arg |= addr << 9;
-	if (blocks == 1 && blksz <= 512)
-		cmd.arg |= (blksz == 512) ? 0 : blksz;	/* byte mode */
+	if (blocks == 1 && blksz < 512)
+		cmd.arg |= blksz;			/* byte mode */
+	else if (blocks == 1 && blksz == 512 &&
+		 !(mmc_card_broken_byte_mode_512(card)))
+		cmd.arg |= 0;				/* byte mode, 0==512 */
 	else
 		cmd.arg |= 0x08000000 | blocks;		/* block mode */
 	cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;

drivers/mmc/host/Kconfig

@@ -130,13 +130,13 @@ config MMC_SDHCI_CNS3XXX
 	  If unsure, say N.
 
 config MMC_SDHCI_ESDHC_IMX
-	tristate "SDHCI platform support for the Freescale eSDHC i.MX controller"
-	depends on ARCH_MX25 || ARCH_MX35 || ARCH_MX5
+	tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller"
+	depends on ARCH_MXC
 	depends on MMC_SDHCI_PLTFM
 	select MMC_SDHCI_IO_ACCESSORS
 	help
-	  This selects the Freescale eSDHC controller support on the platform
-	  bus, found on platforms like mx35/51.
+	  This selects the Freescale eSDHC/uSDHC controller support
+	  found on i.MX25, i.MX35 i.MX5x and i.MX6x.
 
 	  If you have a controller with this interface, say Y or M here.
 
@@ -326,11 +326,11 @@ config MMC_MSM
 	  support for SDIO devices.
 
 config MMC_MXC
-	tristate "Freescale i.MX2/3 Multimedia Card Interface support"
-	depends on MACH_MX21 || MACH_MX27 || ARCH_MX31
+	tristate "Freescale i.MX21/27/31 Multimedia Card Interface support"
+	depends on ARCH_MXC
 	help
-	  This selects the Freescale i.MX2/3 Multimedia card Interface.
-	  If you have a i.MX platform with a Multimedia Card slot,
+	  This selects the Freescale i.MX21, i.MX27 and i.MX31 Multimedia card
+	  Interface. If you have a i.MX platform with a Multimedia Card slot,
 	  say Y or M here.
 
 	  If unsure, say N.

drivers/mmc/host/at91_mci.c

@@ -869,7 +869,11 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
 static irqreturn_t at91_mmc_det_irq(int irq, void *_host)
 {
 	struct at91mci_host *host = _host;
-	int present = !gpio_get_value(irq_to_gpio(irq));
+	int present;
+
+	/* entering this ISR means that we have configured det_pin:
+	 * we can use its value in board structure */
+	present = !gpio_get_value(host->board->det_pin);
 
 	/*
 	 * we expect this irq on both insert and remove,

drivers/mmc/host/atmel-mci-regs.h

@@ -17,112 +17,126 @@
 #define __DRIVERS_MMC_ATMEL_MCI_H__
 
 /* MCI Register Definitions */
-#define MCI_CR			0x0000	/* Control */
-# define MCI_CR_MCIEN		(  1 <<  0)	/* MCI Enable */
-# define MCI_CR_MCIDIS		(  1 <<  1)	/* MCI Disable */
-# define MCI_CR_PWSEN		(  1 <<  2)	/* Power Save Enable */
-# define MCI_CR_PWSDIS		(  1 <<  3)	/* Power Save Disable */
-# define MCI_CR_SWRST		(  1 <<  7)	/* Software Reset */
-#define MCI_MR			0x0004	/* Mode */
-# define MCI_MR_CLKDIV(x)	((x) <<  0)	/* Clock Divider */
-# define MCI_MR_PWSDIV(x)	((x) <<  8)	/* Power Saving Divider */
-# define MCI_MR_RDPROOF		(  1 << 11)	/* Read Proof */
-# define MCI_MR_WRPROOF		(  1 << 12)	/* Write Proof */
-# define MCI_MR_PDCFBYTE	(  1 << 13)	/* Force Byte Transfer */
-# define MCI_MR_PDCPADV		(  1 << 14)	/* Padding Value */
-# define MCI_MR_PDCMODE		(  1 << 15)	/* PDC-oriented Mode */
-#define MCI_DTOR		0x0008	/* Data Timeout */
-# define MCI_DTOCYC(x)		((x) <<  0)	/* Data Timeout Cycles */
-# define MCI_DTOMUL(x)		((x) <<  4)	/* Data Timeout Multiplier */
-#define MCI_SDCR		0x000c	/* SD Card / SDIO */
-# define MCI_SDCSEL_SLOT_A	(  0 <<  0)	/* Select SD slot A */
-# define MCI_SDCSEL_SLOT_B	(  1 <<  0)	/* Select SD slot A */
-# define MCI_SDCSEL_MASK	(  3 <<  0)
-# define MCI_SDCBUS_1BIT	(  0 <<  6)	/* 1-bit data bus */
-# define MCI_SDCBUS_4BIT	(  2 <<  6)	/* 4-bit data bus */
-# define MCI_SDCBUS_8BIT	(  3 <<  6)	/* 8-bit data bus[2] */
-# define MCI_SDCBUS_MASK	(  3 <<  6)
-#define MCI_ARGR		0x0010	/* Command Argument */
-#define MCI_CMDR		0x0014	/* Command */
-# define MCI_CMDR_CMDNB(x)	((x) <<  0)	/* Command Opcode */
-# define MCI_CMDR_RSPTYP_NONE	(  0 <<  6)	/* No response */
-# define MCI_CMDR_RSPTYP_48BIT	(  1 <<  6)	/* 48-bit response */
-# define MCI_CMDR_RSPTYP_136BIT	(  2 <<  6)	/* 136-bit response */
-# define MCI_CMDR_SPCMD_INIT	(  1 <<  8)	/* Initialization command */
-# define MCI_CMDR_SPCMD_SYNC	(  2 <<  8)	/* Synchronized command */
-# define MCI_CMDR_SPCMD_INT	(  4 <<  8)	/* Interrupt command */
-# define MCI_CMDR_SPCMD_INTRESP	(  5 <<  8)	/* Interrupt response */
-# define MCI_CMDR_OPDCMD	(  1 << 11)	/* Open Drain */
-# define MCI_CMDR_MAXLAT_5CYC	(  0 << 12)	/* Max latency 5 cycles */
-# define MCI_CMDR_MAXLAT_64CYC	(  1 << 12)	/* Max latency 64 cycles */
-# define MCI_CMDR_START_XFER	(  1 << 16)	/* Start data transfer */
-# define MCI_CMDR_STOP_XFER	(  2 << 16)	/* Stop data transfer */
-# define MCI_CMDR_TRDIR_WRITE	(  0 << 18)	/* Write data */
-# define MCI_CMDR_TRDIR_READ	(  1 << 18)	/* Read data */
-# define MCI_CMDR_BLOCK		(  0 << 19)	/* Single-block transfer */
-# define MCI_CMDR_MULTI_BLOCK	(  1 << 19)	/* Multi-block transfer */
-# define MCI_CMDR_STREAM	(  2 << 19)	/* MMC Stream transfer */
-# define MCI_CMDR_SDIO_BYTE	(  4 << 19)	/* SDIO Byte transfer */
-# define MCI_CMDR_SDIO_BLOCK	(  5 << 19)	/* SDIO Block transfer */
-# define MCI_CMDR_SDIO_SUSPEND	(  1 << 24)	/* SDIO Suspend Command */
-# define MCI_CMDR_SDIO_RESUME	(  2 << 24)	/* SDIO Resume Command */
-#define MCI_BLKR		0x0018	/* Block */
-# define MCI_BCNT(x)		((x) <<  0)	/* Data Block Count */
-# define MCI_BLKLEN(x)		((x) << 16)	/* Data Block Length */
-#define MCI_CSTOR		0x001c	/* Completion Signal Timeout[2] */
-# define MCI_CSTOCYC(x)		((x) <<  0)	/* CST cycles */
-# define MCI_CSTOMUL(x)		((x) <<  4)	/* CST multiplier */
-#define MCI_RSPR		0x0020	/* Response 0 */
-#define MCI_RSPR1		0x0024	/* Response 1 */
-#define MCI_RSPR2		0x0028	/* Response 2 */
-#define MCI_RSPR3		0x002c	/* Response 3 */
-#define MCI_RDR			0x0030	/* Receive Data */
-#define MCI_TDR			0x0034	/* Transmit Data */
-#define MCI_SR			0x0040	/* Status */
-#define MCI_IER			0x0044	/* Interrupt Enable */
-#define MCI_IDR			0x0048	/* Interrupt Disable */
-#define MCI_IMR			0x004c	/* Interrupt Mask */
-# define MCI_CMDRDY		(  1 <<   0)	/* Command Ready */
-# define MCI_RXRDY		(  1 <<   1)	/* Receiver Ready */
-# define MCI_TXRDY		(  1 <<   2)	/* Transmitter Ready */
-# define MCI_BLKE		(  1 <<   3)	/* Data Block Ended */
-# define MCI_DTIP		(  1 <<   4)	/* Data Transfer In Progress */
-# define MCI_NOTBUSY		(  1 <<   5)	/* Data Not Busy */
-# define MCI_SDIOIRQA		(  1 <<   8)	/* SDIO IRQ in slot A */
-# define MCI_SDIOIRQB		(  1 <<   9)	/* SDIO IRQ in slot B */
-# define MCI_RINDE		(  1 <<  16)	/* Response Index Error */
-# define MCI_RDIRE		(  1 <<  17)	/* Response Direction Error */
-# define MCI_RCRCE		(  1 <<  18)	/* Response CRC Error */
-# define MCI_RENDE		(  1 <<  19)	/* Response End Bit Error */
-# define MCI_RTOE		(  1 <<  20)	/* Response Time-Out Error */
-# define MCI_DCRCE		(  1 <<  21)	/* Data CRC Error */
-# define MCI_DTOE		(  1 <<  22)	/* Data Time-Out Error */
-# define MCI_OVRE		(  1 <<  30)	/* RX Overrun Error */
-# define MCI_UNRE		(  1 <<  31)	/* TX Underrun Error */
-#define MCI_DMA			0x0050	/* DMA Configuration[2] */
-# define MCI_DMA_OFFSET(x)	((x) <<  0)	/* DMA Write Buffer Offset */
-# define MCI_DMA_CHKSIZE(x)	((x) <<  4)	/* DMA Channel Read and Write Chunk Size */
-# define MCI_DMAEN		(  1 <<  8)	/* DMA Hardware Handshaking Enable */
-#define MCI_CFG			0x0054	/* Configuration[2] */
-# define MCI_CFG_FIFOMODE_1DATA	(  1 <<  0)	/* MCI Internal FIFO control mode */
-# define MCI_CFG_FERRCTRL_COR	(  1 <<  4)	/* Flow Error flag reset control mode */
-# define MCI_CFG_HSMODE		(  1 <<  8)	/* High Speed Mode */
-# define MCI_CFG_LSYNC		(  1 << 12)	/* Synchronize on the last block */
-#define MCI_WPMR		0x00e4	/* Write Protection Mode[2] */
-# define MCI_WP_EN		(  1 <<  0)	/* WP Enable */
-# define MCI_WP_KEY		(0x4d4349 << 8)	/* WP Key */
-#define MCI_WPSR		0x00e8	/* Write Protection Status[2] */
-# define MCI_GET_WP_VS(x)	((x) & 0x0f)
-# define MCI_GET_WP_VSRC(x)	(((x) >> 8) & 0xffff)
-#define MCI_FIFO_APERTURE	0x0200	/* FIFO Aperture[2] */
+#define ATMCI_CR			0x0000	/* Control */
+# define ATMCI_CR_MCIEN			(  1 <<  0)	/* MCI Enable */
+# define ATMCI_CR_MCIDIS		(  1 <<  1)	/* MCI Disable */
+# define ATMCI_CR_PWSEN			(  1 <<  2)	/* Power Save Enable */
+# define ATMCI_CR_PWSDIS		(  1 <<  3)	/* Power Save Disable */
+# define ATMCI_CR_SWRST			(  1 <<  7)	/* Software Reset */
+#define ATMCI_MR			0x0004	/* Mode */
+# define ATMCI_MR_CLKDIV(x)		((x) <<  0)	/* Clock Divider */
+# define ATMCI_MR_PWSDIV(x)		((x) <<  8)	/* Power Saving Divider */
+# define ATMCI_MR_RDPROOF		(  1 << 11)	/* Read Proof */
+# define ATMCI_MR_WRPROOF		(  1 << 12)	/* Write Proof */
+# 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_DTOR			0x0008	/* Data Timeout */
+# define ATMCI_DTOCYC(x)		((x) <<  0)	/* Data Timeout Cycles */
+# define ATMCI_DTOMUL(x)		((x) <<  4)	/* Data Timeout Multiplier */
+#define ATMCI_SDCR			0x000c	/* SD Card / SDIO */
+# define ATMCI_SDCSEL_SLOT_A		(  0 <<  0)	/* Select SD slot A */
+# define ATMCI_SDCSEL_SLOT_B		(  1 <<  0)	/* Select SD slot A */
+# define ATMCI_SDCSEL_MASK		(  3 <<  0)
+# define ATMCI_SDCBUS_1BIT		(  0 <<  6)	/* 1-bit data bus */
+# define ATMCI_SDCBUS_4BIT		(  2 <<  6)	/* 4-bit data bus */
+# define ATMCI_SDCBUS_8BIT		(  3 <<  6)	/* 8-bit data bus[2] */
+# define ATMCI_SDCBUS_MASK		(  3 <<  6)
+#define ATMCI_ARGR			0x0010	/* Command Argument */
+#define ATMCI_CMDR			0x0014	/* Command */
+# define ATMCI_CMDR_CMDNB(x)		((x) <<  0)	/* Command Opcode */
+# define ATMCI_CMDR_RSPTYP_NONE		(  0 <<  6)	/* No response */
+# define ATMCI_CMDR_RSPTYP_48BIT	(  1 <<  6)	/* 48-bit response */
+# define ATMCI_CMDR_RSPTYP_136BIT	(  2 <<  6)	/* 136-bit response */
+# define ATMCI_CMDR_SPCMD_INIT		(  1 <<  8)	/* Initialization command */
+# define ATMCI_CMDR_SPCMD_SYNC		(  2 <<  8)	/* Synchronized command */
+# define ATMCI_CMDR_SPCMD_INT		(  4 <<  8)	/* Interrupt command */
+# define ATMCI_CMDR_SPCMD_INTRESP	(  5 <<  8)	/* Interrupt response */
+# define ATMCI_CMDR_OPDCMD		(  1 << 11)	/* Open Drain */
+# define ATMCI_CMDR_MAXLAT_5CYC		(  0 << 12)	/* Max latency 5 cycles */
+# define ATMCI_CMDR_MAXLAT_64CYC	(  1 << 12)	/* Max latency 64 cycles */
+# define ATMCI_CMDR_START_XFER		(  1 << 16)	/* Start data transfer */
+# define ATMCI_CMDR_STOP_XFER		(  2 << 16)	/* Stop data transfer */
+# define ATMCI_CMDR_TRDIR_WRITE		(  0 << 18)	/* Write data */
+# define ATMCI_CMDR_TRDIR_READ		(  1 << 18)	/* Read data */
+# define ATMCI_CMDR_BLOCK		(  0 << 19)	/* Single-block transfer */
+# define ATMCI_CMDR_MULTI_BLOCK		(  1 << 19)	/* Multi-block transfer */
+# define ATMCI_CMDR_STREAM		(  2 << 19)	/* MMC Stream transfer */
+# define ATMCI_CMDR_SDIO_BYTE		(  4 << 19)	/* SDIO Byte transfer */
+# define ATMCI_CMDR_SDIO_BLOCK		(  5 << 19)	/* SDIO Block transfer */
+# define ATMCI_CMDR_SDIO_SUSPEND	(  1 << 24)	/* SDIO Suspend Command */
+# define ATMCI_CMDR_SDIO_RESUME		(  2 << 24)	/* SDIO Resume Command */
+#define ATMCI_BLKR			0x0018	/* Block */
+# define ATMCI_BCNT(x)			((x) <<  0)	/* Data Block Count */
+# define ATMCI_BLKLEN(x)		((x) << 16)	/* Data Block Length */
+#define ATMCI_CSTOR			0x001c	/* Completion Signal Timeout[2] */
+# define ATMCI_CSTOCYC(x)		((x) <<  0)	/* CST cycles */
+# define ATMCI_CSTOMUL(x)		((x) <<  4)	/* CST multiplier */
+#define ATMCI_RSPR			0x0020	/* Response 0 */
+#define ATMCI_RSPR1			0x0024	/* Response 1 */
+#define ATMCI_RSPR2			0x0028	/* Response 2 */
+#define ATMCI_RSPR3			0x002c	/* Response 3 */
+#define ATMCI_RDR			0x0030	/* Receive Data */
+#define ATMCI_TDR			0x0034	/* Transmit Data */
+#define ATMCI_SR			0x0040	/* Status */
+#define ATMCI_IER			0x0044	/* Interrupt Enable */
+#define ATMCI_IDR			0x0048	/* Interrupt Disable */
+#define ATMCI_IMR			0x004c	/* Interrupt Mask */
+# define ATMCI_CMDRDY			(  1 <<   0)	/* Command Ready */
+# define ATMCI_RXRDY			(  1 <<   1)	/* Receiver Ready */
+# define ATMCI_TXRDY			(  1 <<   2)	/* Transmitter Ready */
+# define ATMCI_BLKE			(  1 <<   3)	/* Data Block Ended */
+# define ATMCI_DTIP			(  1 <<   4)	/* Data Transfer In Progress */
+# define ATMCI_NOTBUSY			(  1 <<   5)	/* Data Not Busy */
+# define ATMCI_ENDRX			(  1 <<   6)    /* End of RX Buffer */
+# define ATMCI_ENDTX			(  1 <<   7)    /* End of TX Buffer */
+# define ATMCI_SDIOIRQA			(  1 <<   8)	/* SDIO IRQ in slot A */
+# define ATMCI_SDIOIRQB			(  1 <<   9)	/* SDIO IRQ in slot B */
+# define ATMCI_SDIOWAIT			(  1 <<  12)    /* SDIO Read Wait Operation Status */
+# define ATMCI_CSRCV			(  1 <<  13)    /* CE-ATA Completion Signal Received */
+# define ATMCI_RXBUFF			(  1 <<  14)    /* RX Buffer Full */
+# define ATMCI_TXBUFE			(  1 <<  15)    /* TX Buffer Empty */
+# define ATMCI_RINDE			(  1 <<  16)	/* Response Index Error */
+# define ATMCI_RDIRE			(  1 <<  17)	/* Response Direction Error */
+# define ATMCI_RCRCE			(  1 <<  18)	/* Response CRC Error */
+# define ATMCI_RENDE			(  1 <<  19)	/* Response End Bit Error */
+# define ATMCI_RTOE			(  1 <<  20)	/* Response Time-Out Error */
+# define ATMCI_DCRCE			(  1 <<  21)	/* Data CRC Error */
+# define ATMCI_DTOE			(  1 <<  22)	/* Data Time-Out Error */
+# define ATMCI_CSTOE			(  1 <<  23)    /* Completion Signal Time-out Error */
+# define ATMCI_BLKOVRE			(  1 <<  24)    /* DMA Block Overrun Error */
+# define ATMCI_DMADONE			(  1 <<  25)    /* DMA Transfer Done */
+# define ATMCI_FIFOEMPTY		(  1 <<  26)    /* FIFO Empty Flag */
+# define ATMCI_XFRDONE			(  1 <<  27)    /* Transfer Done Flag */
+# define ATMCI_ACKRCV			(  1 <<  28)    /* Boot Operation Acknowledge Received */
+# define ATMCI_ACKRCVE			(  1 <<  29)    /* Boot Operation Acknowledge Error */
+# define ATMCI_OVRE			(  1 <<  30)	/* RX Overrun Error */
+# define ATMCI_UNRE			(  1 <<  31)	/* TX Underrun Error */
+#define ATMCI_DMA			0x0050	/* DMA Configuration[2] */
+# define ATMCI_DMA_OFFSET(x)		((x) <<  0)	/* DMA Write Buffer Offset */
+# define ATMCI_DMA_CHKSIZE(x)		((x) <<  4)	/* DMA Channel Read and Write Chunk Size */
+# define ATMCI_DMAEN			(  1 <<  8)	/* DMA Hardware Handshaking Enable */
+#define ATMCI_CFG			0x0054	/* Configuration[2] */
+# define ATMCI_CFG_FIFOMODE_1DATA	(  1 <<  0)	/* MCI Internal FIFO control mode */
+# define ATMCI_CFG_FERRCTRL_COR		(  1 <<  4)	/* Flow Error flag reset control mode */
+# define ATMCI_CFG_HSMODE		(  1 <<  8)	/* High Speed Mode */
+# define ATMCI_CFG_LSYNC		(  1 << 12)	/* Synchronize on the last block */
+#define ATMCI_WPMR			0x00e4	/* Write Protection Mode[2] */
+# define ATMCI_WP_EN			(  1 <<  0)	/* WP Enable */
+# define ATMCI_WP_KEY			(0x4d4349 << 8)	/* WP Key */
+#define ATMCI_WPSR			0x00e8	/* Write Protection Status[2] */
+# define ATMCI_GET_WP_VS(x)		((x) & 0x0f)
+# define ATMCI_GET_WP_VSRC(x)		(((x) >> 8) & 0xffff)
+#define ATMCI_VERSION			0x00FC  /* Version */
+#define ATMCI_FIFO_APERTURE		0x0200	/* FIFO Aperture[2] */
 
 /* This is not including the FIFO Aperture on MCI2 */
-#define MCI_REGS_SIZE		0x100
+#define ATMCI_REGS_SIZE		0x100
 
 /* Register access macros */
-#define mci_readl(port,reg)				\
-	__raw_readl((port)->regs + MCI_##reg)
-#define mci_writel(port,reg,value)			\
-	__raw_writel((value), (port)->regs + MCI_##reg)
+#define atmci_readl(port,reg)				\
+	__raw_readl((port)->regs + reg)
+#define atmci_writel(port,reg,value)			\
+	__raw_writel((value), (port)->regs + reg)
 
 #endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */

drivers/mmc/host/atmel-mci.c

@@ -30,6 +30,7 @@
 
 #include <mach/atmel-mci.h>
 #include <linux/atmel-mci.h>
+#include <linux/atmel_pdc.h>
 
 #include <asm/io.h>
 #include <asm/unaligned.h>
@@ -39,7 +40,7 @@
 
 #include "atmel-mci-regs.h"
 
-#define ATMCI_DATA_ERROR_FLAGS	(MCI_DCRCE | MCI_DTOE | MCI_OVRE | MCI_UNRE)
+#define ATMCI_DATA_ERROR_FLAGS	(ATMCI_DCRCE | ATMCI_DTOE | ATMCI_OVRE | ATMCI_UNRE)
 #define ATMCI_DMA_THRESHOLD	16
 
 enum {
@@ -58,18 +59,35 @@ enum atmel_mci_state {
 	STATE_DATA_ERROR,
 };
 
+enum atmci_xfer_dir {
+	XFER_RECEIVE = 0,
+	XFER_TRANSMIT,
+};
+
+enum atmci_pdc_buf {
+	PDC_FIRST_BUF = 0,
+	PDC_SECOND_BUF,
+};
+
+struct atmel_mci_caps {
+	bool    has_dma;
+	bool    has_pdc;
+	bool    has_cfg_reg;
+	bool    has_cstor_reg;
+	bool    has_highspeed;
+	bool    has_rwproof;
+};
+
 struct atmel_mci_dma {
-#ifdef CONFIG_MMC_ATMELMCI_DMA
 	struct dma_chan			*chan;
 	struct dma_async_tx_descriptor	*data_desc;
-#endif
 };
 
 /**
  * struct atmel_mci - MMC controller state shared between all slots
  * @lock: Spinlock protecting the queue and associated data.
  * @regs: Pointer to MMIO registers.
- * @sg: Scatterlist entry currently being processed by PIO code, if any.
+ * @sg: Scatterlist entry currently being processed by PIO or PDC code.
  * @pio_offset: Offset into the current scatterlist entry.
  * @cur_slot: The slot which is currently using the controller.
  * @mrq: The request currently being processed on @cur_slot,
@@ -77,6 +95,7 @@ struct atmel_mci_dma {
  * @cmd: The command currently being sent to the card, or NULL.
  * @data: The data currently being transferred, or NULL if no data
  *	transfer is in progress.
+ * @data_size: just data->blocks * data->blksz.
  * @dma: DMA client state.
  * @data_chan: DMA channel being used for the current data transfer.
  * @cmd_status: Snapshot of SR taken upon completion of the current
@@ -103,6 +122,13 @@ struct atmel_mci_dma {
  * @mck: The peripheral bus clock hooked up to the MMC controller.
  * @pdev: Platform device associated with the MMC controller.
  * @slot: Slots sharing this MMC controller.
+ * @caps: MCI capabilities depending on MCI version.
+ * @prepare_data: function to setup MCI before data transfer which
+ * depends on MCI capabilities.
+ * @submit_data: function to start data transfer which depends on MCI
+ * capabilities.
+ * @stop_transfer: function to stop data transfer which depends on MCI
+ * capabilities.
  *
  * Locking
  * =======
@@ -143,6 +169,7 @@ struct atmel_mci {
 	struct mmc_request	*mrq;
 	struct mmc_command	*cmd;
 	struct mmc_data		*data;
+	unsigned int		data_size;
 
 	struct atmel_mci_dma	dma;
 	struct dma_chan		*data_chan;
@@ -166,7 +193,13 @@ struct atmel_mci {
 	struct clk		*mck;
 	struct platform_device	*pdev;
 
-	struct atmel_mci_slot	*slot[ATMEL_MCI_MAX_NR_SLOTS];
+	struct atmel_mci_slot	*slot[ATMCI_MAX_NR_SLOTS];
+
+	struct atmel_mci_caps   caps;
+
+	u32 (*prepare_data)(struct atmel_mci *host, struct mmc_data *data);
+	void (*submit_data)(struct atmel_mci *host, struct mmc_data *data);
+	void (*stop_transfer)(struct atmel_mci *host);
 };
 
 /**
@@ -219,31 +252,6 @@ struct atmel_mci_slot {
 #define atmci_set_pending(host, event)				\
 	set_bit(event, &host->pending_events)
 
-/*
- * Enable or disable features/registers based on
- * whether the processor supports them
- */
-static bool mci_has_rwproof(void)
-{
-	if (cpu_is_at91sam9261() || cpu_is_at91rm9200())
-		return false;
-	else
-		return true;
-}
-
-/*
- * The new MCI2 module isn't 100% compatible with the old MCI module,
- * and it has a few nice features which we want to use...
- */
-static inline bool atmci_is_mci2(void)
-{
-	if (cpu_is_at91sam9g45())
-		return true;
-
-	return false;
-}
-
-
 /*
  * The debugfs stuff below is mostly optimized away when
  * CONFIG_DEBUG_FS is not set.
@@ -352,7 +360,7 @@ static int atmci_regs_show(struct seq_file *s, void *v)
 	struct atmel_mci	*host = s->private;
 	u32			*buf;
 
-	buf = kmalloc(MCI_REGS_SIZE, GFP_KERNEL);
+	buf = kmalloc(ATMCI_REGS_SIZE, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
@@ -363,47 +371,50 @@ static int atmci_regs_show(struct seq_file *s, void *v)
 	 */
 	spin_lock_bh(&host->lock);
 	clk_enable(host->mck);
-	memcpy_fromio(buf, host->regs, MCI_REGS_SIZE);
+	memcpy_fromio(buf, host->regs, ATMCI_REGS_SIZE);
 	clk_disable(host->mck);
 	spin_unlock_bh(&host->lock);
 
 	seq_printf(s, "MR:\t0x%08x%s%s CLKDIV=%u\n",
-			buf[MCI_MR / 4],
-			buf[MCI_MR / 4] & MCI_MR_RDPROOF ? " RDPROOF" : "",
-			buf[MCI_MR / 4] & MCI_MR_WRPROOF ? " WRPROOF" : "",
-			buf[MCI_MR / 4] & 0xff);
-	seq_printf(s, "DTOR:\t0x%08x\n", buf[MCI_DTOR / 4]);
-	seq_printf(s, "SDCR:\t0x%08x\n", buf[MCI_SDCR / 4]);
-	seq_printf(s, "ARGR:\t0x%08x\n", buf[MCI_ARGR / 4]);
+			buf[ATMCI_MR / 4],
+			buf[ATMCI_MR / 4] & ATMCI_MR_RDPROOF ? " RDPROOF" : "",
+			buf[ATMCI_MR / 4] & ATMCI_MR_WRPROOF ? " WRPROOF" : "",
+			buf[ATMCI_MR / 4] & 0xff);
+	seq_printf(s, "DTOR:\t0x%08x\n", buf[ATMCI_DTOR / 4]);
+	seq_printf(s, "SDCR:\t0x%08x\n", buf[ATMCI_SDCR / 4]);
+	seq_printf(s, "ARGR:\t0x%08x\n", buf[ATMCI_ARGR / 4]);
 	seq_printf(s, "BLKR:\t0x%08x BCNT=%u BLKLEN=%u\n",
-			buf[MCI_BLKR / 4],
-			buf[MCI_BLKR / 4] & 0xffff,
-			(buf[MCI_BLKR / 4] >> 16) & 0xffff);
-	if (atmci_is_mci2())
-		seq_printf(s, "CSTOR:\t0x%08x\n", buf[MCI_CSTOR / 4]);
+			buf[ATMCI_BLKR / 4],
+			buf[ATMCI_BLKR / 4] & 0xffff,
+			(buf[ATMCI_BLKR / 4] >> 16) & 0xffff);
+	if (host->caps.has_cstor_reg)
+		seq_printf(s, "CSTOR:\t0x%08x\n", buf[ATMCI_CSTOR / 4]);
 
 	/* Don't read RSPR and RDR; it will consume the data there */
 
-	atmci_show_status_reg(s, "SR", buf[MCI_SR / 4]);
-	atmci_show_status_reg(s, "IMR", buf[MCI_IMR / 4]);
+	atmci_show_status_reg(s, "SR", buf[ATMCI_SR / 4]);
+	atmci_show_status_reg(s, "IMR", buf[ATMCI_IMR / 4]);
 
-	if (atmci_is_mci2()) {
+	if (host->caps.has_dma) {
 		u32 val;
 
-		val = buf[MCI_DMA / 4];
+		val = buf[ATMCI_DMA / 4];
 		seq_printf(s, "DMA:\t0x%08x OFFSET=%u CHKSIZE=%u%s\n",
 				val, val & 3,
 				((val >> 4) & 3) ?
 					1 << (((val >> 4) & 3) + 1) : 1,
-				val & MCI_DMAEN ? " DMAEN" : "");
+				val & ATMCI_DMAEN ? " DMAEN" : "");
+	}
+	if (host->caps.has_cfg_reg) {
+		u32 val;
 
-		val = buf[MCI_CFG / 4];
+		val = buf[ATMCI_CFG / 4];
 		seq_printf(s, "CFG:\t0x%08x%s%s%s%s\n",
 				val,
-				val & MCI_CFG_FIFOMODE_1DATA ? " FIFOMODE_ONE_DATA" : "",
-				val & MCI_CFG_FERRCTRL_COR ? " FERRCTRL_CLEAR_ON_READ" : "",
-				val & MCI_CFG_HSMODE ? " HSMODE" : "",
-				val & MCI_CFG_LSYNC ? " LSYNC" : "");
+				val & ATMCI_CFG_FIFOMODE_1DATA ? " FIFOMODE_ONE_DATA" : "",
+				val & ATMCI_CFG_FERRCTRL_COR ? " FERRCTRL_CLEAR_ON_READ" : "",
+				val & ATMCI_CFG_HSMODE ? " HSMODE" : "",
+				val & ATMCI_CFG_LSYNC ? " LSYNC" : "");
 	}
 
 	kfree(buf);
@@ -466,7 +477,7 @@ err:
 	dev_err(&mmc->class_dev, "failed to initialize debugfs for slot\n");
 }
 
-static inline unsigned int ns_to_clocks(struct atmel_mci *host,
+static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host,
 					unsigned int ns)
 {
 	return (ns * (host->bus_hz / 1000000) + 999) / 1000;
@@ -482,7 +493,8 @@ static void atmci_set_timeout(struct atmel_mci *host,
 	unsigned	dtocyc;
 	unsigned	dtomul;
 
-	timeout = ns_to_clocks(host, data->timeout_ns) + data->timeout_clks;
+	timeout = atmci_ns_to_clocks(host, data->timeout_ns)
+		+ data->timeout_clks;
 
 	for (dtomul = 0; dtomul < 8; dtomul++) {
 		unsigned shift = dtomul_to_shift[dtomul];
@@ -498,7 +510,7 @@ static void atmci_set_timeout(struct atmel_mci *host,
 
 	dev_vdbg(&slot->mmc->class_dev, "setting timeout to %u cycles\n",
 			dtocyc << dtomul_to_shift[dtomul]);
-	mci_writel(host, DTOR, (MCI_DTOMUL(dtomul) | MCI_DTOCYC(dtocyc)));
+	atmci_writel(host, ATMCI_DTOR, (ATMCI_DTOMUL(dtomul) | ATMCI_DTOCYC(dtocyc)));
 }
 
 /*
@@ -512,13 +524,13 @@ static u32 atmci_prepare_command(struct mmc_host *mmc,
 
 	cmd->error = -EINPROGRESS;
 
-	cmdr = MCI_CMDR_CMDNB(cmd->opcode);
+	cmdr = ATMCI_CMDR_CMDNB(cmd->opcode);
 
 	if (cmd->flags & MMC_RSP_PRESENT) {
 		if (cmd->flags & MMC_RSP_136)
-			cmdr |= MCI_CMDR_RSPTYP_136BIT;
+			cmdr |= ATMCI_CMDR_RSPTYP_136BIT;
 		else
-			cmdr |= MCI_CMDR_RSPTYP_48BIT;
+			cmdr |= ATMCI_CMDR_RSPTYP_48BIT;
 	}
 
 	/*
@@ -526,34 +538,34 @@ static u32 atmci_prepare_command(struct mmc_host *mmc,
 	 * it's too difficult to determine whether this is an ACMD or
 	 * not. Better make it 64.
 	 */
-	cmdr |= MCI_CMDR_MAXLAT_64CYC;
+	cmdr |= ATMCI_CMDR_MAXLAT_64CYC;
 
 	if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN)
-		cmdr |= MCI_CMDR_OPDCMD;
+		cmdr |= ATMCI_CMDR_OPDCMD;
 
 	data = cmd->data;
 	if (data) {
-		cmdr |= MCI_CMDR_START_XFER;
+		cmdr |= ATMCI_CMDR_START_XFER;
 
 		if (cmd->opcode == SD_IO_RW_EXTENDED) {
-			cmdr |= MCI_CMDR_SDIO_BLOCK;
+			cmdr |= ATMCI_CMDR_SDIO_BLOCK;
 		} else {
 			if (data->flags & MMC_DATA_STREAM)
-				cmdr |= MCI_CMDR_STREAM;
+				cmdr |= ATMCI_CMDR_STREAM;
 			else if (data->blocks > 1)
-				cmdr |= MCI_CMDR_MULTI_BLOCK;
+				cmdr |= ATMCI_CMDR_MULTI_BLOCK;
 			else
-				cmdr |= MCI_CMDR_BLOCK;
+				cmdr |= ATMCI_CMDR_BLOCK;
 		}
 
 		if (data->flags & MMC_DATA_READ)
-			cmdr |= MCI_CMDR_TRDIR_READ;
+			cmdr |= ATMCI_CMDR_TRDIR_READ;
 	}
 
 	return cmdr;
 }
 
-static void atmci_start_command(struct atmel_mci *host,
+static void atmci_send_command(struct atmel_mci *host,
 		struct mmc_command *cmd, u32 cmd_flags)
 {
 	WARN_ON(host->cmd);
@@ -563,43 +575,119 @@ static void atmci_start_command(struct atmel_mci *host,
 			"start command: ARGR=0x%08x CMDR=0x%08x\n",
 			cmd->arg, cmd_flags);
 
-	mci_writel(host, ARGR, cmd->arg);
-	mci_writel(host, CMDR, cmd_flags);
+	atmci_writel(host, ATMCI_ARGR, cmd->arg);
+	atmci_writel(host, ATMCI_CMDR, cmd_flags);
 }
 
-static void send_stop_cmd(struct atmel_mci *host, struct mmc_data *data)
+static void atmci_send_stop_cmd(struct atmel_mci *host, struct mmc_data *data)
 {
-	atmci_start_command(host, data->stop, host->stop_cmdr);
-	mci_writel(host, IER, MCI_CMDRDY);
+	atmci_send_command(host, data->stop, host->stop_cmdr);
+	atmci_writel(host, ATMCI_IER, ATMCI_CMDRDY);
 }
 
-#ifdef CONFIG_MMC_ATMELMCI_DMA
-static void atmci_dma_cleanup(struct atmel_mci *host)
+/*
+ * Configure given PDC buffer taking care of alignement issues.
+ * Update host->data_size and host->sg.
+ */
+static void atmci_pdc_set_single_buf(struct atmel_mci *host,
+	enum atmci_xfer_dir dir, enum atmci_pdc_buf buf_nb)
+{
+	u32 pointer_reg, counter_reg;
+
+	if (dir == XFER_RECEIVE) {
+		pointer_reg = ATMEL_PDC_RPR;
+		counter_reg = ATMEL_PDC_RCR;
+	} else {
+		pointer_reg = ATMEL_PDC_TPR;
+		counter_reg = ATMEL_PDC_TCR;
+	}
+
+	if (buf_nb == PDC_SECOND_BUF) {
+		pointer_reg += ATMEL_PDC_SCND_BUF_OFF;
+		counter_reg += ATMEL_PDC_SCND_BUF_OFF;
+	}
+
+	atmci_writel(host, pointer_reg, sg_dma_address(host->sg));
+	if (host->data_size <= sg_dma_len(host->sg)) {
+		if (host->data_size & 0x3) {
+			/* If size is different from modulo 4, transfer bytes */
+			atmci_writel(host, counter_reg, host->data_size);
+			atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCFBYTE);
+		} else {
+			/* Else transfer 32-bits words */
+			atmci_writel(host, counter_reg, host->data_size / 4);
+		}
+		host->data_size = 0;
+	} else {
+		/* We assume the size of a page is 32-bits aligned */
+		atmci_writel(host, counter_reg, sg_dma_len(host->sg) / 4);
+		host->data_size -= sg_dma_len(host->sg);
+		if (host->data_size)
+			host->sg = sg_next(host->sg);
+	}
+}
+
+/*
+ * Configure PDC buffer according to the data size ie configuring one or two
+ * buffers. Don't use this function if you want to configure only the second
+ * buffer. In this case, use atmci_pdc_set_single_buf.
+ */
+static void atmci_pdc_set_both_buf(struct atmel_mci *host, int dir)
 {
-	struct mmc_data			*data = host->data;
+	atmci_pdc_set_single_buf(host, dir, PDC_FIRST_BUF);
+	if (host->data_size)
+		atmci_pdc_set_single_buf(host, dir, PDC_SECOND_BUF);
+}
+
+/*
+ * Unmap sg lists, called when transfer is finished.
+ */
+static void atmci_pdc_cleanup(struct atmel_mci *host)
+{
+	struct mmc_data         *data = host->data;
 
 	if (data)
-		dma_unmap_sg(host->dma.chan->device->dev,
-			     data->sg, data->sg_len,
-			     ((data->flags & MMC_DATA_WRITE)
-			      ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
+		dma_unmap_sg(&host->pdev->dev,
+				data->sg, data->sg_len,
+				((data->flags & MMC_DATA_WRITE)
+				 ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
 }
 
-static void atmci_stop_dma(struct atmel_mci *host)
+/*
+ * Disable PDC transfers. Update pending flags to EVENT_XFER_COMPLETE after
+ * having received ATMCI_TXBUFE or ATMCI_RXBUFF interrupt. Enable ATMCI_NOTBUSY
+ * interrupt needed for both transfer directions.
+ */
+static void atmci_pdc_complete(struct atmel_mci *host)
 {
-	struct dma_chan *chan = host->data_chan;
+	atmci_writel(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
+	atmci_pdc_cleanup(host);
 
-	if (chan) {
-		dmaengine_terminate_all(chan);
-		atmci_dma_cleanup(host);
-	} else {
-		/* Data transfer was stopped by the interrupt handler */
+	/*
+	 * If the card was removed, data will be NULL. No point trying
+	 * to send the stop command or waiting for NBUSY in this case.
+	 */
+	if (host->data) {
 		atmci_set_pending(host, EVENT_XFER_COMPLETE);
-		mci_writel(host, IER, MCI_NOTBUSY);
+		tasklet_schedule(&host->tasklet);
+		atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 	}
 }
 
-/* This function is called by the DMA driver from tasklet context. */
+static void atmci_dma_cleanup(struct atmel_mci *host)
+{
+	struct mmc_data                 *data = host->data;
+
+	if (data)
+		dma_unmap_sg(host->dma.chan->device->dev,
+				data->sg, data->sg_len,
+				((data->flags & MMC_DATA_WRITE)
+				 ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
+}
+
+/*
+ * This function is called by the DMA driver from tasklet context.
+ */
 static void atmci_dma_complete(void *arg)
 {
 	struct atmel_mci	*host = arg;
@@ -607,9 +695,9 @@ static void atmci_dma_complete(void *arg)
 
 	dev_vdbg(&host->pdev->dev, "DMA complete\n");
 
-	if (atmci_is_mci2())
+	if (host->caps.has_dma)
 		/* Disable DMA hardware handshaking on MCI */
-		mci_writel(host, DMA, mci_readl(host, DMA) & ~MCI_DMAEN);
+		atmci_writel(host, ATMCI_DMA, atmci_readl(host, ATMCI_DMA) & ~ATMCI_DMAEN);
 
 	atmci_dma_cleanup(host);
 
@@ -641,11 +729,93 @@ static void atmci_dma_complete(void *arg)
 		 * completion callback" rule of the dma engine
 		 * framework.
 		 */
-		mci_writel(host, IER, MCI_NOTBUSY);
+		atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 	}
 }
 
-static int
+/*
+ * Returns a mask of interrupt flags to be enabled after the whole
+ * request has been prepared.
+ */
+static u32 atmci_prepare_data(struct atmel_mci *host, struct mmc_data *data)
+{
+	u32 iflags;
+
+	data->error = -EINPROGRESS;
+
+	host->sg = data->sg;
+	host->data = data;
+	host->data_chan = NULL;
+
+	iflags = ATMCI_DATA_ERROR_FLAGS;
+
+	/*
+	 * Errata: MMC data write operation with less than 12
+	 * bytes is impossible.
+	 *
+	 * Errata: MCI Transmit Data Register (TDR) FIFO
+	 * corruption when length is not multiple of 4.
+	 */
+	if (data->blocks * data->blksz < 12
+			|| (data->blocks * data->blksz) & 3)
+		host->need_reset = true;
+
+	host->pio_offset = 0;
+	if (data->flags & MMC_DATA_READ)
+		iflags |= ATMCI_RXRDY;
+	else
+		iflags |= ATMCI_TXRDY;
+
+	return iflags;
+}
+
+/*
+ * Set interrupt flags and set block length into the MCI mode register even
+ * if this value is also accessible in the MCI block register. It seems to be
+ * necessary before the High Speed MCI version. It also map sg and configure
+ * PDC registers.
+ */
+static u32
+atmci_prepare_data_pdc(struct atmel_mci *host, struct mmc_data *data)
+{
+	u32 iflags, tmp;
+	unsigned int sg_len;
+	enum dma_data_direction dir;
+
+	data->error = -EINPROGRESS;
+
+	host->data = data;
+	host->sg = data->sg;
+	iflags = ATMCI_DATA_ERROR_FLAGS;
+
+	/* Enable pdc mode */
+	atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCMODE);
+
+	if (data->flags & MMC_DATA_READ) {
+		dir = DMA_FROM_DEVICE;
+		iflags |= ATMCI_ENDRX | ATMCI_RXBUFF;
+	} else {
+		dir = DMA_TO_DEVICE;
+		iflags |= ATMCI_ENDTX | ATMCI_TXBUFE;
+	}
+
+	/* Set BLKLEN */
+	tmp = atmci_readl(host, ATMCI_MR);
+	tmp &= 0x0000ffff;
+	tmp |= ATMCI_BLKLEN(data->blksz);
+	atmci_writel(host, ATMCI_MR, tmp);
+
+	/* Configure PDC */
+	host->data_size = data->blocks * data->blksz;
+	sg_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, dir);
+	if (host->data_size)
+		atmci_pdc_set_both_buf(host,
+			((dir == DMA_FROM_DEVICE) ? XFER_RECEIVE : XFER_TRANSMIT));
+
+	return iflags;
+}
+
+static u32
 atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 {
 	struct dma_chan			*chan;
@@ -654,6 +824,15 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	unsigned int			i;
 	enum dma_data_direction		direction;
 	unsigned int			sglen;
+	u32 iflags;
+
+	data->error = -EINPROGRESS;
+
+	WARN_ON(host->data);
+	host->sg = NULL;
+	host->data = data;
+
+	iflags = ATMCI_DATA_ERROR_FLAGS;
 
 	/*
 	 * We don't do DMA on "complex" transfers, i.e. with
@@ -661,13 +840,13 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	 * with all the DMA setup overhead for short transfers.
 	 */
 	if (data->blocks * data->blksz < ATMCI_DMA_THRESHOLD)
-		return -EINVAL;
+		return atmci_prepare_data(host, data);
 	if (data->blksz & 3)
-		return -EINVAL;
+		return atmci_prepare_data(host, data);
 
 	for_each_sg(data->sg, sg, data->sg_len, i) {
 		if (sg->offset & 3 || sg->length & 3)
-			return -EINVAL;
+			return atmci_prepare_data(host, data);
 	}
 
 	/* If we don't have a channel, we can't do DMA */
@@ -678,8 +857,8 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	if (!chan)
 		return -ENODEV;
 
-	if (atmci_is_mci2())
-		mci_writel(host, DMA, MCI_DMA_CHKSIZE(3) | MCI_DMAEN);
+	if (host->caps.has_dma)
+		atmci_writel(host, ATMCI_DMA, ATMCI_DMA_CHKSIZE(3) | ATMCI_DMAEN);
 
 	if (data->flags & MMC_DATA_READ)
 		direction = DMA_FROM_DEVICE;
@@ -687,7 +866,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 		direction = DMA_TO_DEVICE;
 
 	sglen = dma_map_sg(chan->device->dev, data->sg,
-			   data->sg_len, direction);
+			data->sg_len, direction);
 
 	desc = chan->device->device_prep_slave_sg(chan,
 			data->sg, sglen, direction,
@@ -699,13 +878,32 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	desc->callback = atmci_dma_complete;
 	desc->callback_param = host;
 
-	return 0;
+	return iflags;
 unmap_exit:
 	dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, direction);
 	return -ENOMEM;
 }
 
-static void atmci_submit_data(struct atmel_mci *host)
+static void
+atmci_submit_data(struct atmel_mci *host, struct mmc_data *data)
+{
+	return;
+}
+
+/*
+ * Start PDC according to transfer direction.
+ */
+static void
+atmci_submit_data_pdc(struct atmel_mci *host, struct mmc_data *data)
+{
+	if (data->flags & MMC_DATA_READ)
+		atmci_writel(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
+	else
+		atmci_writel(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
+}
+
+static void
+atmci_submit_data_dma(struct atmel_mci *host, struct mmc_data *data)
 {
 	struct dma_chan			*chan = host->data_chan;
 	struct dma_async_tx_descriptor	*desc = host->dma.data_desc;
@@ -716,64 +914,39 @@ static void atmci_submit_data(struct atmel_mci *host)
 	}
 }
 
-#else /* CONFIG_MMC_ATMELMCI_DMA */
-
-static int atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
-{
-	return -ENOSYS;
-}
-
-static void atmci_submit_data(struct atmel_mci *host) {}
-
-static void atmci_stop_dma(struct atmel_mci *host)
+static void atmci_stop_transfer(struct atmel_mci *host)
 {
-	/* Data transfer was stopped by the interrupt handler */
 	atmci_set_pending(host, EVENT_XFER_COMPLETE);
-	mci_writel(host, IER, MCI_NOTBUSY);
+	atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 }
 
-#endif /* CONFIG_MMC_ATMELMCI_DMA */
-
 /*
- * Returns a mask of interrupt flags to be enabled after the whole
- * request has been prepared.
+ * Stop data transfer because error(s) occured.
  */
-static u32 atmci_prepare_data(struct atmel_mci *host, struct mmc_data *data)
+static void atmci_stop_transfer_pdc(struct atmel_mci *host)
 {
-	u32 iflags;
-
-	data->error = -EINPROGRESS;
-
-	WARN_ON(host->data);
-	host->sg = NULL;
-	host->data = data;
-
-	iflags = ATMCI_DATA_ERROR_FLAGS;
-	if (atmci_prepare_data_dma(host, data)) {
-		host->data_chan = NULL;
+	atmci_set_pending(host, EVENT_XFER_COMPLETE);
+	atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
+}
 
-		/*
-		 * Errata: MMC data write operation with less than 12
-		 * bytes is impossible.
-		 *
-		 * Errata: MCI Transmit Data Register (TDR) FIFO
-		 * corruption when length is not multiple of 4.
-		 */
-		if (data->blocks * data->blksz < 12
-				|| (data->blocks * data->blksz) & 3)
-			host->need_reset = true;
+static void atmci_stop_transfer_dma(struct atmel_mci *host)
+{
+	struct dma_chan *chan = host->data_chan;
 
-		host->sg = data->sg;
-		host->pio_offset = 0;
-		if (data->flags & MMC_DATA_READ)
-			iflags |= MCI_RXRDY;
-		else
-			iflags |= MCI_TXRDY;
+	if (chan) {
+		dmaengine_terminate_all(chan);
+		atmci_dma_cleanup(host);
+	} else {
+		/* Data transfer was stopped by the interrupt handler */
+		atmci_set_pending(host, EVENT_XFER_COMPLETE);
+		atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 	}
-
-	return iflags;
 }
 
+/*
+ * Start a request: prepare data if needed, prepare the command and activate
+ * interrupts.
+ */
 static void atmci_start_request(struct atmel_mci *host,
 		struct atmel_mci_slot *slot)
 {
@@ -792,24 +965,24 @@ static void atmci_start_request(struct atmel_mci *host,
 	host->data_status = 0;
 
 	if (host->need_reset) {
-		mci_writel(host, CR, MCI_CR_SWRST);
-		mci_writel(host, CR, MCI_CR_MCIEN);
-		mci_writel(host, MR, host->mode_reg);
-		if (atmci_is_mci2())
-			mci_writel(host, CFG, host->cfg_reg);
+		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);
 		host->need_reset = false;
 	}
-	mci_writel(host, SDCR, slot->sdc_reg);
+	atmci_writel(host, ATMCI_SDCR, slot->sdc_reg);
 
-	iflags = mci_readl(host, IMR);
-	if (iflags & ~(MCI_SDIOIRQA | MCI_SDIOIRQB))
+	iflags = atmci_readl(host, ATMCI_IMR);
+	if (iflags & ~(ATMCI_SDIOIRQA | ATMCI_SDIOIRQB))
 		dev_warn(&slot->mmc->class_dev, "WARNING: IMR=0x%08x\n",
 				iflags);
 
 	if (unlikely(test_and_clear_bit(ATMCI_CARD_NEED_INIT, &slot->flags))) {
 		/* Send init sequence (74 clock cycles) */
-		mci_writel(host, CMDR, MCI_CMDR_SPCMD_INIT);
-		while (!(mci_readl(host, SR) & MCI_CMDRDY))
+		atmci_writel(host, ATMCI_CMDR, ATMCI_CMDR_SPCMD_INIT);
+		while (!(atmci_readl(host, ATMCI_SR) & ATMCI_CMDRDY))
 			cpu_relax();
 	}
 	iflags = 0;
@@ -818,31 +991,31 @@ static void atmci_start_request(struct atmel_mci *host,
 		atmci_set_timeout(host, slot, data);
 
 		/* Must set block count/size before sending command */
-		mci_writel(host, BLKR, MCI_BCNT(data->blocks)
-				| MCI_BLKLEN(data->blksz));
+		atmci_writel(host, ATMCI_BLKR, ATMCI_BCNT(data->blocks)
+				| ATMCI_BLKLEN(data->blksz));
 		dev_vdbg(&slot->mmc->class_dev, "BLKR=0x%08x\n",
-			MCI_BCNT(data->blocks) | MCI_BLKLEN(data->blksz));
+			ATMCI_BCNT(data->blocks) | ATMCI_BLKLEN(data->blksz));
 
-		iflags |= atmci_prepare_data(host, data);
+		iflags |= host->prepare_data(host, data);
 	}
 
-	iflags |= MCI_CMDRDY;
+	iflags |= ATMCI_CMDRDY;
 	cmd = mrq->cmd;
 	cmdflags = atmci_prepare_command(slot->mmc, cmd);
-	atmci_start_command(host, cmd, cmdflags);
+	atmci_send_command(host, cmd, cmdflags);
 
 	if (data)
-		atmci_submit_data(host);
+		host->submit_data(host, data);
 
 	if (mrq->stop) {
 		host->stop_cmdr = atmci_prepare_command(slot->mmc, mrq->stop);
-		host->stop_cmdr |= MCI_CMDR_STOP_XFER;
+		host->stop_cmdr |= ATMCI_CMDR_STOP_XFER;
 		if (!(data->flags & MMC_DATA_WRITE))
-			host->stop_cmdr |= MCI_CMDR_TRDIR_READ;
+			host->stop_cmdr |= ATMCI_CMDR_TRDIR_READ;
 		if (data->flags & MMC_DATA_STREAM)
-			host->stop_cmdr |= MCI_CMDR_STREAM;
+			host->stop_cmdr |= ATMCI_CMDR_STREAM;
 		else
-			host->stop_cmdr |= MCI_CMDR_MULTI_BLOCK;
+			host->stop_cmdr |= ATMCI_CMDR_MULTI_BLOCK;
 	}
 
 	/*
@@ -851,7 +1024,7 @@ static void atmci_start_request(struct atmel_mci *host,
 	 * conditions (e.g. command and data complete, but stop not
 	 * prepared yet.)
 	 */
-	mci_writel(host, IER, iflags);
+	atmci_writel(host, ATMCI_IER, iflags);
 }
 
 static void atmci_queue_request(struct atmel_mci *host,
@@ -909,13 +1082,13 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	struct atmel_mci	*host = slot->host;
 	unsigned int		i;
 
-	slot->sdc_reg &= ~MCI_SDCBUS_MASK;
+	slot->sdc_reg &= ~ATMCI_SDCBUS_MASK;
 	switch (ios->bus_width) {
 	case MMC_BUS_WIDTH_1:
-		slot->sdc_reg |= MCI_SDCBUS_1BIT;
+		slot->sdc_reg |= ATMCI_SDCBUS_1BIT;
 		break;
 	case MMC_BUS_WIDTH_4:
-		slot->sdc_reg |= MCI_SDCBUS_4BIT;
+		slot->sdc_reg |= ATMCI_SDCBUS_4BIT;
 		break;
 	}
 
@@ -926,10 +1099,10 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		spin_lock_bh(&host->lock);
 		if (!host->mode_reg) {
 			clk_enable(host->mck);
-			mci_writel(host, CR, MCI_CR_SWRST);
-			mci_writel(host, CR, MCI_CR_MCIEN);
-			if (atmci_is_mci2())
-				mci_writel(host, CFG, host->cfg_reg);
+			atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
+			atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN);
+			if (host->caps.has_cfg_reg)
+				atmci_writel(host, ATMCI_CFG, host->cfg_reg);
 		}
 
 		/*
@@ -937,7 +1110,7 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		 * core ios update when finding the minimum.
 		 */
 		slot->clock = ios->clock;
-		for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+		for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 			if (host->slot[i] && host->slot[i]->clock
 					&& host->slot[i]->clock < clock_min)
 				clock_min = host->slot[i]->clock;
@@ -952,28 +1125,28 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 			clkdiv = 255;
 		}
 
-		host->mode_reg = MCI_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.
 		 * This state is not expected to last for long.
 		 */
-		if (mci_has_rwproof())
-			host->mode_reg |= (MCI_MR_WRPROOF | MCI_MR_RDPROOF);
+		if (host->caps.has_rwproof)
+			host->mode_reg |= (ATMCI_MR_WRPROOF | ATMCI_MR_RDPROOF);
 
-		if (atmci_is_mci2()) {
+		if (host->caps.has_cfg_reg) {
 			/* setup High Speed mode in relation with card capacity */
 			if (ios->timing == MMC_TIMING_SD_HS)
-				host->cfg_reg |= MCI_CFG_HSMODE;
+				host->cfg_reg |= ATMCI_CFG_HSMODE;
 			else
-				host->cfg_reg &= ~MCI_CFG_HSMODE;
+				host->cfg_reg &= ~ATMCI_CFG_HSMODE;
 		}
 
 		if (list_empty(&host->queue)) {
-			mci_writel(host, MR, host->mode_reg);
-			if (atmci_is_mci2())
-				mci_writel(host, CFG, host->cfg_reg);
+			atmci_writel(host, ATMCI_MR, host->mode_reg);
+			if (host->caps.has_cfg_reg)
+				atmci_writel(host, ATMCI_CFG, host->cfg_reg);
 		} else {
 			host->need_clock_update = true;
 		}
@@ -984,16 +1157,16 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
 		spin_lock_bh(&host->lock);
 		slot->clock = 0;
-		for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+		for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 			if (host->slot[i] && host->slot[i]->clock) {
 				any_slot_active = true;
 				break;
 			}
 		}
 		if (!any_slot_active) {
-			mci_writel(host, CR, MCI_CR_MCIDIS);
+			atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIDIS);
 			if (host->mode_reg) {
-				mci_readl(host, MR);
+				atmci_readl(host, ATMCI_MR);
 				clk_disable(host->mck);
 			}
 			host->mode_reg = 0;
@@ -1057,9 +1230,9 @@ static void atmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 	struct atmel_mci	*host = slot->host;
 
 	if (enable)
-		mci_writel(host, IER, slot->sdio_irq);
+		atmci_writel(host, ATMCI_IER, slot->sdio_irq);
 	else
-		mci_writel(host, IDR, slot->sdio_irq);
+		atmci_writel(host, ATMCI_IDR, slot->sdio_irq);
 }
 
 static const struct mmc_host_ops atmci_ops = {
@@ -1086,9 +1259,9 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
 	 * busy transferring data.
 	 */
 	if (host->need_clock_update) {
-		mci_writel(host, MR, host->mode_reg);
-		if (atmci_is_mci2())
-			mci_writel(host, CFG, host->cfg_reg);
+		atmci_writel(host, ATMCI_MR, host->mode_reg);
+		if (host->caps.has_cfg_reg)
+			atmci_writel(host, ATMCI_CFG, host->cfg_reg);
 	}
 
 	host->cur_slot->mrq = NULL;
@@ -1117,16 +1290,16 @@ static void atmci_command_complete(struct atmel_mci *host,
 	u32		status = host->cmd_status;
 
 	/* Read the response from the card (up to 16 bytes) */
-	cmd->resp[0] = mci_readl(host, RSPR);
-	cmd->resp[1] = mci_readl(host, RSPR);
-	cmd->resp[2] = mci_readl(host, RSPR);
-	cmd->resp[3] = mci_readl(host, RSPR);
+	cmd->resp[0] = atmci_readl(host, ATMCI_RSPR);
+	cmd->resp[1] = atmci_readl(host, ATMCI_RSPR);
+	cmd->resp[2] = atmci_readl(host, ATMCI_RSPR);
+	cmd->resp[3] = atmci_readl(host, ATMCI_RSPR);
 
-	if (status & MCI_RTOE)
+	if (status & ATMCI_RTOE)
 		cmd->error = -ETIMEDOUT;
-	else if ((cmd->flags & MMC_RSP_CRC) && (status & MCI_RCRCE))
+	else if ((cmd->flags & MMC_RSP_CRC) && (status & ATMCI_RCRCE))
 		cmd->error = -EILSEQ;
-	else if (status & (MCI_RINDE | MCI_RDIRE | MCI_RENDE))
+	else if (status & (ATMCI_RINDE | ATMCI_RDIRE | ATMCI_RENDE))
 		cmd->error = -EIO;
 	else
 		cmd->error = 0;
@@ -1136,10 +1309,10 @@ static void atmci_command_complete(struct atmel_mci *host,
 			"command error: status=0x%08x\n", status);
 
 		if (cmd->data) {
-			atmci_stop_dma(host);
+			host->stop_transfer(host);
 			host->data = NULL;
-			mci_writel(host, IDR, MCI_NOTBUSY
-					| MCI_TXRDY | MCI_RXRDY
+			atmci_writel(host, ATMCI_IDR, ATMCI_NOTBUSY
+					| ATMCI_TXRDY | ATMCI_RXRDY
 					| ATMCI_DATA_ERROR_FLAGS);
 		}
 	}
@@ -1191,11 +1364,11 @@ static void atmci_detect_change(unsigned long data)
 				 * Reset controller to terminate any ongoing
 				 * commands or data transfers.
 				 */
-				mci_writel(host, CR, MCI_CR_SWRST);
-				mci_writel(host, CR, MCI_CR_MCIEN);
-				mci_writel(host, MR, host->mode_reg);
-				if (atmci_is_mci2())
-					mci_writel(host, CFG, host->cfg_reg);
+				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);
 
 				host->data = NULL;
 				host->cmd = NULL;
@@ -1210,7 +1383,7 @@ static void atmci_detect_change(unsigned long data)
 					/* fall through */
 				case STATE_SENDING_DATA:
 					mrq->data->error = -ENOMEDIUM;
-					atmci_stop_dma(host);
+					host->stop_transfer(host);
 					break;
 				case STATE_DATA_BUSY:
 				case STATE_DATA_ERROR:
@@ -1261,7 +1434,7 @@ static void atmci_tasklet_func(unsigned long priv)
 	dev_vdbg(&host->pdev->dev,
 		"tasklet: state %u pending/completed/mask %lx/%lx/%x\n",
 		state, host->pending_events, host->completed_events,
-		mci_readl(host, IMR));
+		atmci_readl(host, ATMCI_IMR));
 
 	do {
 		prev_state = state;
@@ -1289,9 +1462,9 @@ static void atmci_tasklet_func(unsigned long priv)
 		case STATE_SENDING_DATA:
 			if (atmci_test_and_clear_pending(host,
 						EVENT_DATA_ERROR)) {
-				atmci_stop_dma(host);
+				host->stop_transfer(host);
 				if (data->stop)
-					send_stop_cmd(host, data);
+					atmci_send_stop_cmd(host, data);
 				state = STATE_DATA_ERROR;
 				break;
 			}
@@ -1313,11 +1486,11 @@ static void atmci_tasklet_func(unsigned long priv)
 			atmci_set_completed(host, EVENT_DATA_COMPLETE);
 			status = host->data_status;
 			if (unlikely(status & ATMCI_DATA_ERROR_FLAGS)) {
-				if (status & MCI_DTOE) {
+				if (status & ATMCI_DTOE) {
 					dev_dbg(&host->pdev->dev,
 							"data timeout error\n");
 					data->error = -ETIMEDOUT;
-				} else if (status & MCI_DCRCE) {
+				} else if (status & ATMCI_DCRCE) {
 					dev_dbg(&host->pdev->dev,
 							"data CRC error\n");
 					data->error = -EILSEQ;
@@ -1330,7 +1503,7 @@ static void atmci_tasklet_func(unsigned long priv)
 			} else {
 				data->bytes_xfered = data->blocks * data->blksz;
 				data->error = 0;
-				mci_writel(host, IDR, ATMCI_DATA_ERROR_FLAGS);
+				atmci_writel(host, ATMCI_IDR, ATMCI_DATA_ERROR_FLAGS);
 			}
 
 			if (!data->stop) {
@@ -1340,7 +1513,7 @@ static void atmci_tasklet_func(unsigned long priv)
 
 			prev_state = state = STATE_SENDING_STOP;
 			if (!data->error)
-				send_stop_cmd(host, data);
+				atmci_send_stop_cmd(host, data);
 			/* fall through */
 
 		case STATE_SENDING_STOP:
@@ -1380,7 +1553,7 @@ static void atmci_read_data_pio(struct atmel_mci *host)
 	unsigned int		nbytes = 0;
 
 	do {
-		value = mci_readl(host, RDR);
+		value = atmci_readl(host, ATMCI_RDR);
 		if (likely(offset + 4 <= sg->length)) {
 			put_unaligned(value, (u32 *)(buf + offset));
 
@@ -1412,9 +1585,9 @@ static void atmci_read_data_pio(struct atmel_mci *host)
 			nbytes += offset;
 		}
 
-		status = mci_readl(host, SR);
+		status = atmci_readl(host, ATMCI_SR);
 		if (status & ATMCI_DATA_ERROR_FLAGS) {
-			mci_writel(host, IDR, (MCI_NOTBUSY | MCI_RXRDY
+			atmci_writel(host, ATMCI_IDR, (ATMCI_NOTBUSY | ATMCI_RXRDY
 						| ATMCI_DATA_ERROR_FLAGS));
 			host->data_status = status;
 			data->bytes_xfered += nbytes;
@@ -1423,7 +1596,7 @@ static void atmci_read_data_pio(struct atmel_mci *host)
 			tasklet_schedule(&host->tasklet);
 			return;
 		}
-	} while (status & MCI_RXRDY);
+	} while (status & ATMCI_RXRDY);
 
 	host->pio_offset = offset;
 	data->bytes_xfered += nbytes;
@@ -1431,8 +1604,8 @@ static void atmci_read_data_pio(struct atmel_mci *host)
 	return;
 
 done:
-	mci_writel(host, IDR, MCI_RXRDY);
-	mci_writel(host, IER, MCI_NOTBUSY);
+	atmci_writel(host, ATMCI_IDR, ATMCI_RXRDY);
+	atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 	data->bytes_xfered += nbytes;
 	smp_wmb();
 	atmci_set_pending(host, EVENT_XFER_COMPLETE);
@@ -1451,7 +1624,7 @@ static void atmci_write_data_pio(struct atmel_mci *host)
 	do {
 		if (likely(offset + 4 <= sg->length)) {
 			value = get_unaligned((u32 *)(buf + offset));
-			mci_writel(host, TDR, value);
+			atmci_writel(host, ATMCI_TDR, value);
 
 			offset += 4;
 			nbytes += 4;
@@ -1472,20 +1645,20 @@ static void atmci_write_data_pio(struct atmel_mci *host)
 
 			host->sg = sg = sg_next(sg);
 			if (!sg) {
-				mci_writel(host, TDR, value);
+				atmci_writel(host, ATMCI_TDR, value);
 				goto done;
 			}
 
 			offset = 4 - remaining;
 			buf = sg_virt(sg);
 			memcpy((u8 *)&value + remaining, buf, offset);
-			mci_writel(host, TDR, value);
+			atmci_writel(host, ATMCI_TDR, value);
 			nbytes += offset;
 		}
 
-		status = mci_readl(host, SR);
+		status = atmci_readl(host, ATMCI_SR);
 		if (status & ATMCI_DATA_ERROR_FLAGS) {
-			mci_writel(host, IDR, (MCI_NOTBUSY | MCI_TXRDY
+			atmci_writel(host, ATMCI_IDR, (ATMCI_NOTBUSY | ATMCI_TXRDY
 						| ATMCI_DATA_ERROR_FLAGS));
 			host->data_status = status;
 			data->bytes_xfered += nbytes;
@@ -1494,7 +1667,7 @@ static void atmci_write_data_pio(struct atmel_mci *host)
 			tasklet_schedule(&host->tasklet);
 			return;
 		}
-	} while (status & MCI_TXRDY);
+	} while (status & ATMCI_TXRDY);
 
 	host->pio_offset = offset;
 	data->bytes_xfered += nbytes;
@@ -1502,8 +1675,8 @@ static void atmci_write_data_pio(struct atmel_mci *host)
 	return;
 
 done:
-	mci_writel(host, IDR, MCI_TXRDY);
-	mci_writel(host, IER, MCI_NOTBUSY);
+	atmci_writel(host, ATMCI_IDR, ATMCI_TXRDY);
+	atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
 	data->bytes_xfered += nbytes;
 	smp_wmb();
 	atmci_set_pending(host, EVENT_XFER_COMPLETE);
@@ -1511,7 +1684,7 @@ done:
 
 static void atmci_cmd_interrupt(struct atmel_mci *host, u32 status)
 {
-	mci_writel(host, IDR, MCI_CMDRDY);
+	atmci_writel(host, ATMCI_IDR, ATMCI_CMDRDY);
 
 	host->cmd_status = status;
 	smp_wmb();
@@ -1523,7 +1696,7 @@ static void atmci_sdio_interrupt(struct atmel_mci *host, u32 status)
 {
 	int	i;
 
-	for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+	for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 		struct atmel_mci_slot *slot = host->slot[i];
 		if (slot && (status & slot->sdio_irq)) {
 			mmc_signal_sdio_irq(slot->mmc);
@@ -1539,40 +1712,92 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 	unsigned int		pass_count = 0;
 
 	do {
-		status = mci_readl(host, SR);
-		mask = mci_readl(host, IMR);
+		status = atmci_readl(host, ATMCI_SR);
+		mask = atmci_readl(host, ATMCI_IMR);
 		pending = status & mask;
 		if (!pending)
 			break;
 
 		if (pending & ATMCI_DATA_ERROR_FLAGS) {
-			mci_writel(host, IDR, ATMCI_DATA_ERROR_FLAGS
-					| MCI_RXRDY | MCI_TXRDY);
-			pending &= mci_readl(host, IMR);
+			atmci_writel(host, ATMCI_IDR, ATMCI_DATA_ERROR_FLAGS
+					| ATMCI_RXRDY | ATMCI_TXRDY);
+			pending &= atmci_readl(host, ATMCI_IMR);
 
 			host->data_status = status;
 			smp_wmb();
 			atmci_set_pending(host, EVENT_DATA_ERROR);
 			tasklet_schedule(&host->tasklet);
 		}
-		if (pending & MCI_NOTBUSY) {
-			mci_writel(host, IDR,
-					ATMCI_DATA_ERROR_FLAGS | MCI_NOTBUSY);
+
+		if (pending & ATMCI_TXBUFE) {
+			atmci_writel(host, ATMCI_IDR, ATMCI_TXBUFE);
+			atmci_writel(host, ATMCI_IDR, ATMCI_ENDTX);
+			/*
+			 * We can receive this interruption before having configured
+			 * the second pdc buffer, so we need to reconfigure first and
+			 * second buffers again
+			 */
+			if (host->data_size) {
+				atmci_pdc_set_both_buf(host, XFER_TRANSMIT);
+				atmci_writel(host, ATMCI_IER, ATMCI_ENDTX);
+				atmci_writel(host, ATMCI_IER, ATMCI_TXBUFE);
+			} else {
+				atmci_pdc_complete(host);
+			}
+		} else if (pending & ATMCI_ENDTX) {
+			atmci_writel(host, ATMCI_IDR, ATMCI_ENDTX);
+
+			if (host->data_size) {
+				atmci_pdc_set_single_buf(host,
+						XFER_TRANSMIT, PDC_SECOND_BUF);
+				atmci_writel(host, ATMCI_IER, ATMCI_ENDTX);
+			}
+		}
+
+		if (pending & ATMCI_RXBUFF) {
+			atmci_writel(host, ATMCI_IDR, ATMCI_RXBUFF);
+			atmci_writel(host, ATMCI_IDR, ATMCI_ENDRX);
+			/*
+			 * We can receive this interruption before having configured
+			 * the second pdc buffer, so we need to reconfigure first and
+			 * second buffers again
+			 */
+			if (host->data_size) {
+				atmci_pdc_set_both_buf(host, XFER_RECEIVE);
+				atmci_writel(host, ATMCI_IER, ATMCI_ENDRX);
+				atmci_writel(host, ATMCI_IER, ATMCI_RXBUFF);
+			} else {
+				atmci_pdc_complete(host);
+			}
+		} else if (pending & ATMCI_ENDRX) {
+			atmci_writel(host, ATMCI_IDR, ATMCI_ENDRX);
+
+			if (host->data_size) {
+				atmci_pdc_set_single_buf(host,
+						XFER_RECEIVE, PDC_SECOND_BUF);
+				atmci_writel(host, ATMCI_IER, ATMCI_ENDRX);
+			}
+		}
+
+
+		if (pending & ATMCI_NOTBUSY) {
+			atmci_writel(host, ATMCI_IDR,
+					ATMCI_DATA_ERROR_FLAGS | ATMCI_NOTBUSY);
 			if (!host->data_status)
 				host->data_status = status;
 			smp_wmb();
 			atmci_set_pending(host, EVENT_DATA_COMPLETE);
 			tasklet_schedule(&host->tasklet);
 		}
-		if (pending & MCI_RXRDY)
+		if (pending & ATMCI_RXRDY)
 			atmci_read_data_pio(host);
-		if (pending & MCI_TXRDY)
+		if (pending & ATMCI_TXRDY)
 			atmci_write_data_pio(host);
 
-		if (pending & MCI_CMDRDY)
+		if (pending & ATMCI_CMDRDY)
 			atmci_cmd_interrupt(host, status);
 
-		if (pending & (MCI_SDIOIRQA | MCI_SDIOIRQB))
+		if (pending & (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB))
 			atmci_sdio_interrupt(host, status);
 
 	} while (pass_count++ < 5);
@@ -1621,7 +1846,7 @@ static int __init atmci_init_slot(struct atmel_mci *host,
 	mmc->ocr_avail	= MMC_VDD_32_33 | MMC_VDD_33_34;
 	if (sdio_irq)
 		mmc->caps |= MMC_CAP_SDIO_IRQ;
-	if (atmci_is_mci2())
+	if (host->caps.has_highspeed)
 		mmc->caps |= MMC_CAP_SD_HIGHSPEED;
 	if (slot_data->bus_width >= 4)
 		mmc->caps |= MMC_CAP_4_BIT_DATA;
@@ -1704,8 +1929,7 @@ static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot,
 	mmc_free_host(slot->mmc);
 }
 
-#ifdef CONFIG_MMC_ATMELMCI_DMA
-static bool filter(struct dma_chan *chan, void *slave)
+static bool atmci_filter(struct dma_chan *chan, void *slave)
 {
 	struct mci_dma_data	*sl = slave;
 
@@ -1730,14 +1954,14 @@ static void atmci_configure_dma(struct atmel_mci *host)
 		dma_cap_mask_t mask;
 
 		setup_dma_addr(pdata->dma_slave,
-			       host->mapbase + MCI_TDR,
-			       host->mapbase + MCI_RDR);
+			       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, filter, pdata->dma_slave);
+			dma_request_channel(mask, atmci_filter, pdata->dma_slave);
 	}
 	if (!host->dma.chan)
 		dev_notice(&host->pdev->dev, "DMA not available, using PIO\n");
@@ -1746,9 +1970,60 @@ static void atmci_configure_dma(struct atmel_mci *host)
 					"Using %s for DMA transfers\n",
 					dma_chan_name(host->dma.chan));
 }
+
+static inline unsigned int atmci_get_version(struct atmel_mci *host)
+{
+	return atmci_readl(host, ATMCI_VERSION) & 0x00000fff;
+}
+
+/*
+ * HSMCI (High Speed MCI) module is not fully compatible with MCI module.
+ * HSMCI provides DMA support and a new config register but no more supports
+ * PDC.
+ */
+static void __init atmci_get_cap(struct atmel_mci *host)
+{
+	unsigned int version;
+
+	version = atmci_get_version(host);
+	dev_info(&host->pdev->dev,
+			"version: 0x%x\n", version);
+
+	host->caps.has_dma = 0;
+	host->caps.has_pdc = 0;
+	host->caps.has_cfg_reg = 0;
+	host->caps.has_cstor_reg = 0;
+	host->caps.has_highspeed = 0;
+	host->caps.has_rwproof = 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:
+#ifdef CONFIG_AT_HDMAC
+		host->caps.has_dma = 1;
 #else
-static void atmci_configure_dma(struct atmel_mci *host) {}
+		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_cfg_reg = 1;
+		host->caps.has_cstor_reg = 1;
+		host->caps.has_highspeed = 1;
+		host->caps.has_rwproof = 1;
+		break;
+	default:
+		dev_warn(&host->pdev->dev,
+				"Unmanaged mci version, set minimum capabilities\n");
+		break;
+	}
+}
 
 static int __init atmci_probe(struct platform_device *pdev)
 {
@@ -1789,7 +2064,7 @@ static int __init atmci_probe(struct platform_device *pdev)
 		goto err_ioremap;
 
 	clk_enable(host->mck);
-	mci_writel(host, CR, MCI_CR_SWRST);
+	atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
 	host->bus_hz = clk_get_rate(host->mck);
 	clk_disable(host->mck);
 
@@ -1801,7 +2076,27 @@ static int __init atmci_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_request_irq;
 
-	atmci_configure_dma(host);
+	/* 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");
+		host->prepare_data = &atmci_prepare_data_dma;
+		host->submit_data = &atmci_submit_data_dma;
+		host->stop_transfer = &atmci_stop_transfer_dma;
+	} else if (host->caps.has_pdc) {
+		dev_info(&pdev->dev, "using PDC\n");
+		host->prepare_data = &atmci_prepare_data_pdc;
+		host->submit_data = &atmci_submit_data_pdc;
+		host->stop_transfer = &atmci_stop_transfer_pdc;
+	} else {
+		dev_info(&pdev->dev, "no DMA, no PDC\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);
 
@@ -1810,13 +2105,13 @@ static int __init atmci_probe(struct platform_device *pdev)
 	ret = -ENODEV;
 	if (pdata->slot[0].bus_width) {
 		ret = atmci_init_slot(host, &pdata->slot[0],
-				0, MCI_SDCSEL_SLOT_A, MCI_SDIOIRQA);
+				0, ATMCI_SDCSEL_SLOT_A, ATMCI_SDIOIRQA);
 		if (!ret)
 			nr_slots++;
 	}
 	if (pdata->slot[1].bus_width) {
 		ret = atmci_init_slot(host, &pdata->slot[1],
-				1, MCI_SDCSEL_SLOT_B, MCI_SDIOIRQB);
+				1, ATMCI_SDCSEL_SLOT_B, ATMCI_SDIOIRQB);
 		if (!ret)
 			nr_slots++;
 	}
@@ -1833,10 +2128,8 @@ static int __init atmci_probe(struct platform_device *pdev)
 	return 0;
 
 err_init_slot:
-#ifdef CONFIG_MMC_ATMELMCI_DMA
 	if (host->dma.chan)
 		dma_release_channel(host->dma.chan);
-#endif
 	free_irq(irq, host);
 err_request_irq:
 	iounmap(host->regs);
@@ -1854,15 +2147,15 @@ static int __exit atmci_remove(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, NULL);
 
-	for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+	for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 		if (host->slot[i])
 			atmci_cleanup_slot(host->slot[i], i);
 	}
 
 	clk_enable(host->mck);
-	mci_writel(host, IDR, ~0UL);
-	mci_writel(host, CR, MCI_CR_MCIDIS);
-	mci_readl(host, SR);
+	atmci_writel(host, ATMCI_IDR, ~0UL);
+	atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIDIS);
+	atmci_readl(host, ATMCI_SR);
 	clk_disable(host->mck);
 
 #ifdef CONFIG_MMC_ATMELMCI_DMA
@@ -1885,7 +2178,7 @@ static int atmci_suspend(struct device *dev)
 	struct atmel_mci *host = dev_get_drvdata(dev);
 	int i;
 
-	 for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+	 for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 		struct atmel_mci_slot *slot = host->slot[i];
 		int ret;
 
@@ -1916,7 +2209,7 @@ static int atmci_resume(struct device *dev)
 	int i;
 	int ret = 0;
 
-	for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+	for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
 		struct atmel_mci_slot *slot = host->slot[i];
 		int err;
 

drivers/mmc/host/au1xmmc.c

@@ -55,7 +55,7 @@
 
 #ifdef DEBUG
 #define DBG(fmt, idx, args...)	\
-	printk(KERN_DEBUG "au1xmmc(%d): DEBUG: " fmt, idx, ##args)
+	pr_debug("au1xmmc(%d): DEBUG: " fmt, idx, ##args)
 #else
 #define DBG(fmt, idx, args...) do {} while (0)
 #endif
@@ -268,7 +268,7 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
 		mmccmd |= SD_CMD_RT_3;
 		break;
 	default:
-		printk(KERN_INFO "au1xmmc: unhandled response type %02x\n",
+		pr_info("au1xmmc: unhandled response type %02x\n",
 			mmc_resp_type(cmd));
 		return -EINVAL;
 	}
@@ -1031,7 +1031,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 #ifdef CONFIG_SOC_AU1200
 	ret = au1xmmc_dbdma_init(host);
 	if (ret)
-		printk(KERN_INFO DRIVER_NAME ": DBDMA init failed; using PIO\n");
+		pr_info(DRIVER_NAME ": DBDMA init failed; using PIO\n");
 #endif
 
 #ifdef CONFIG_LEDS_CLASS
@@ -1056,7 +1056,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, host);
 
-	printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X"
+	pr_info(DRIVER_NAME ": MMC Controller %d set up at %8.8X"
 		" (mode=%s)\n", pdev->id, host->iobase,
 		host->flags & HOST_F_DMA ? "dma" : "pio");
 
@@ -1188,7 +1188,7 @@ static int __init au1xmmc_init(void)
 	 */
 	memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
 	if (!memid)
-		printk(KERN_ERR "au1xmmc: cannot add memory dbdma dev\n");
+		pr_err("au1xmmc: cannot add memory dbdma dev\n");
 #endif
 	return platform_driver_register(&au1xmmc_driver);
 }

drivers/mmc/host/dw_mmc.c

@@ -764,11 +764,29 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
 	return present;
 }
 
+static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
+{
+	struct dw_mci_slot *slot = mmc_priv(mmc);
+	struct dw_mci *host = slot->host;
+	u32 int_mask;
+
+	/* Enable/disable Slot Specific SDIO interrupt */
+	int_mask = mci_readl(host, INTMASK);
+	if (enb) {
+		mci_writel(host, INTMASK,
+			   (int_mask | (1 << SDMMC_INT_SDIO(slot->id))));
+	} else {
+		mci_writel(host, INTMASK,
+			   (int_mask & ~(1 << SDMMC_INT_SDIO(slot->id))));
+	}
+}
+
 static const struct mmc_host_ops dw_mci_ops = {
-	.request	= dw_mci_request,
-	.set_ios	= dw_mci_set_ios,
-	.get_ro		= dw_mci_get_ro,
-	.get_cd		= dw_mci_get_cd,
+	.request		= dw_mci_request,
+	.set_ios		= dw_mci_set_ios,
+	.get_ro			= dw_mci_get_ro,
+	.get_cd			= dw_mci_get_cd,
+	.enable_sdio_irq	= dw_mci_enable_sdio_irq,
 };
 
 static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
@@ -1025,7 +1043,8 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
 		buf += len;
 		cnt -= len;
 		if (!sg_next(host->sg) || host->part_buf_count == 2) {
-			mci_writew(host, DATA, host->part_buf16);
+			mci_writew(host, DATA(host->data_offset),
+					host->part_buf16);
 			host->part_buf_count = 0;
 		}
 	}
@@ -1042,21 +1061,23 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
 			cnt -= len;
 			/* push data from aligned buffer into fifo */
 			for (i = 0; i < items; ++i)
-				mci_writew(host, DATA, aligned_buf[i]);
+				mci_writew(host, DATA(host->data_offset),
+						aligned_buf[i]);
 		}
 	} else
 #endif
 	{
 		u16 *pdata = buf;
 		for (; cnt >= 2; cnt -= 2)
-			mci_writew(host, DATA, *pdata++);
+			mci_writew(host, DATA(host->data_offset), *pdata++);
 		buf = pdata;
 	}
 	/* put anything remaining in the part_buf */
 	if (cnt) {
 		dw_mci_set_part_bytes(host, buf, cnt);
 		if (!sg_next(host->sg))
-			mci_writew(host, DATA, host->part_buf16);
+			mci_writew(host, DATA(host->data_offset),
+					host->part_buf16);
 	}
 }
 
@@ -1071,7 +1092,8 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
 			int items = len >> 1;
 			int i;
 			for (i = 0; i < items; ++i)
-				aligned_buf[i] = mci_readw(host, DATA);
+				aligned_buf[i] = mci_readw(host,
+						DATA(host->data_offset));
 			/* memcpy from aligned buffer into output buffer */
 			memcpy(buf, aligned_buf, len);
 			buf += len;
@@ -1082,11 +1104,11 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
 	{
 		u16 *pdata = buf;
 		for (; cnt >= 2; cnt -= 2)
-			*pdata++ = mci_readw(host, DATA);
+			*pdata++ = mci_readw(host, DATA(host->data_offset));
 		buf = pdata;
 	}
 	if (cnt) {
-		host->part_buf16 = mci_readw(host, DATA);
+		host->part_buf16 = mci_readw(host, DATA(host->data_offset));
 		dw_mci_pull_final_bytes(host, buf, cnt);
 	}
 }
@@ -1099,7 +1121,8 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
 		buf += len;
 		cnt -= len;
 		if (!sg_next(host->sg) || host->part_buf_count == 4) {
-			mci_writel(host, DATA, host->part_buf32);
+			mci_writel(host, DATA(host->data_offset),
+					host->part_buf32);
 			host->part_buf_count = 0;
 		}
 	}
@@ -1116,21 +1139,23 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
 			cnt -= len;
 			/* push data from aligned buffer into fifo */
 			for (i = 0; i < items; ++i)
-				mci_writel(host, DATA, aligned_buf[i]);
+				mci_writel(host, DATA(host->data_offset),
+						aligned_buf[i]);
 		}
 	} else
 #endif
 	{
 		u32 *pdata = buf;
 		for (; cnt >= 4; cnt -= 4)
-			mci_writel(host, DATA, *pdata++);
+			mci_writel(host, DATA(host->data_offset), *pdata++);
 		buf = pdata;
 	}
 	/* put anything remaining in the part_buf */
 	if (cnt) {
 		dw_mci_set_part_bytes(host, buf, cnt);
 		if (!sg_next(host->sg))
-			mci_writel(host, DATA, host->part_buf32);
+			mci_writel(host, DATA(host->data_offset),
+						host->part_buf32);
 	}
 }
 
@@ -1145,7 +1170,8 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
 			int items = len >> 2;
 			int i;
 			for (i = 0; i < items; ++i)
-				aligned_buf[i] = mci_readl(host, DATA);
+				aligned_buf[i] = mci_readl(host,
+						DATA(host->data_offset));
 			/* memcpy from aligned buffer into output buffer */
 			memcpy(buf, aligned_buf, len);
 			buf += len;
@@ -1156,11 +1182,11 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
 	{
 		u32 *pdata = buf;
 		for (; cnt >= 4; cnt -= 4)
-			*pdata++ = mci_readl(host, DATA);
+			*pdata++ = mci_readl(host, DATA(host->data_offset));
 		buf = pdata;
 	}
 	if (cnt) {
-		host->part_buf32 = mci_readl(host, DATA);
+		host->part_buf32 = mci_readl(host, DATA(host->data_offset));
 		dw_mci_pull_final_bytes(host, buf, cnt);
 	}
 }
@@ -1173,7 +1199,8 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
 		buf += len;
 		cnt -= len;
 		if (!sg_next(host->sg) || host->part_buf_count == 8) {
-			mci_writew(host, DATA, host->part_buf);
+			mci_writew(host, DATA(host->data_offset),
+					host->part_buf);
 			host->part_buf_count = 0;
 		}
 	}
@@ -1190,21 +1217,23 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
 			cnt -= len;
 			/* push data from aligned buffer into fifo */
 			for (i = 0; i < items; ++i)
-				mci_writeq(host, DATA, aligned_buf[i]);
+				mci_writeq(host, DATA(host->data_offset),
+						aligned_buf[i]);
 		}
 	} else
 #endif
 	{
 		u64 *pdata = buf;
 		for (; cnt >= 8; cnt -= 8)
-			mci_writeq(host, DATA, *pdata++);
+			mci_writeq(host, DATA(host->data_offset), *pdata++);
 		buf = pdata;
 	}
 	/* put anything remaining in the part_buf */
 	if (cnt) {
 		dw_mci_set_part_bytes(host, buf, cnt);
 		if (!sg_next(host->sg))
-			mci_writeq(host, DATA, host->part_buf);
+			mci_writeq(host, DATA(host->data_offset),
+					host->part_buf);
 	}
 }
 
@@ -1219,7 +1248,8 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
 			int items = len >> 3;
 			int i;
 			for (i = 0; i < items; ++i)
-				aligned_buf[i] = mci_readq(host, DATA);
+				aligned_buf[i] = mci_readq(host,
+						DATA(host->data_offset));
 			/* memcpy from aligned buffer into output buffer */
 			memcpy(buf, aligned_buf, len);
 			buf += len;
@@ -1230,11 +1260,11 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
 	{
 		u64 *pdata = buf;
 		for (; cnt >= 8; cnt -= 8)
-			*pdata++ = mci_readq(host, DATA);
+			*pdata++ = mci_readq(host, DATA(host->data_offset));
 		buf = pdata;
 	}
 	if (cnt) {
-		host->part_buf = mci_readq(host, DATA);
+		host->part_buf = mci_readq(host, DATA(host->data_offset));
 		dw_mci_pull_final_bytes(host, buf, cnt);
 	}
 }
@@ -1406,6 +1436,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 	struct dw_mci *host = dev_id;
 	u32 status, pending;
 	unsigned int pass_count = 0;
+	int i;
 
 	do {
 		status = mci_readl(host, RINTSTS);
@@ -1477,6 +1508,15 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 			queue_work(dw_mci_card_workqueue, &host->card_work);
 		}
 
+		/* Handle SDIO Interrupts */
+		for (i = 0; i < host->num_slots; i++) {
+			struct dw_mci_slot *slot = host->slot[i];
+			if (pending & SDMMC_INT_SDIO(i)) {
+				mci_writel(host, RINTSTS, SDMMC_INT_SDIO(i));
+				mmc_signal_sdio_irq(slot->mmc);
+			}
+		}
+
 	} while (pass_count++ < 5);
 
 #ifdef CONFIG_MMC_DW_IDMAC
@@ -1673,7 +1713,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 
 	host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
 	if (IS_ERR(host->vmmc)) {
-		printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+		pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
 		host->vmmc = NULL;
 	} else
 		regulator_enable(host->vmmc);
@@ -1923,6 +1963,18 @@ static int dw_mci_probe(struct platform_device *pdev)
 		}
 	}
 
+	/*
+	 * In 2.40a spec, Data offset is changed.
+	 * 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);
+
+	if (host->verid < DW_MMC_240A)
+		host->data_offset = DATA_OFFSET;
+	else
+		host->data_offset = DATA_240A_OFFSET;
+
 	/*
 	 * Enable interrupts for command done, data over, data empty, card det,
 	 * receive ready and error such as transmit, receive timeout, crc error

drivers/mmc/host/dw_mmc.h

@@ -14,6 +14,8 @@
 #ifndef _DW_MMC_H_
 #define _DW_MMC_H_
 
+#define DW_MMC_240A		0x240a
+
 #define SDMMC_CTRL		0x000
 #define SDMMC_PWREN		0x004
 #define SDMMC_CLKDIV		0x008
@@ -51,7 +53,14 @@
 #define SDMMC_IDINTEN		0x090
 #define SDMMC_DSCADDR		0x094
 #define SDMMC_BUFADDR		0x098
-#define SDMMC_DATA		0x100
+#define SDMMC_DATA(x)		(x)
+
+/*
+ * Data offset is difference according to Version
+ * Lower than 2.40a : data register offest is 0x100
+ */
+#define DATA_OFFSET		0x100
+#define DATA_240A_OFFSET	0x200
 
 /* shift bit field */
 #define _SBF(f, v)		((v) << (f))
@@ -82,7 +91,7 @@
 #define SDMMC_CTYPE_4BIT		BIT(0)
 #define SDMMC_CTYPE_1BIT		0
 /* Interrupt status & mask register defines */
-#define SDMMC_INT_SDIO			BIT(16)
+#define SDMMC_INT_SDIO(n)		BIT(16 + (n))
 #define SDMMC_INT_EBE			BIT(15)
 #define SDMMC_INT_ACD			BIT(14)
 #define SDMMC_INT_SBE			BIT(13)
@@ -130,6 +139,8 @@
 #define SDMMC_IDMAC_ENABLE		BIT(7)
 #define SDMMC_IDMAC_FB			BIT(1)
 #define SDMMC_IDMAC_SWRESET		BIT(0)
+/* Version ID register define */
+#define SDMMC_GET_VERID(x)		((x) & 0xFFFF)
 
 /* Register access macros */
 #define mci_readl(dev, reg)			\

drivers/mmc/host/imxmmc.c

@@ -942,7 +942,7 @@ static int __init imxmci_probe(struct platform_device *pdev)
 	int ret = 0, irq;
 	u16 rev_no;
 
-	printk(KERN_INFO "i.MX mmc driver\n");
+	pr_info("i.MX mmc driver\n");
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);

drivers/mmc/host/mmc_spi.c

@@ -27,6 +27,7 @@
 #include <linux/sched.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <linux/bio.h>
 #include <linux/dma-mapping.h>
 #include <linux/crc7.h>

drivers/mmc/host/mmci.c

@@ -466,7 +466,7 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
 	struct mmci_host_next *next = &host->next_data;
 
 	if (data->host_cookie && data->host_cookie != next->cookie) {
-		printk(KERN_WARNING "[%s] invalid cookie: data->host_cookie %d"
+		pr_warning("[%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;
@@ -531,7 +531,7 @@ static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq,
 	if (chan) {
 		if (err)
 			dmaengine_terminate_all(chan);
-		if (err || data->host_cookie)
+		if (data->host_cookie)
 			dma_unmap_sg(mmc_dev(host->mmc), data->sg,
 				     data->sg_len, dir);
 		mrq->data->host_cookie = 0;

drivers/mmc/host/msm_sdcc.c

@@ -213,7 +213,8 @@ msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd)
 	msmsdcc_writel(host, host->cmd_timeout, MMCIDATATIMER);
 	msmsdcc_writel(host, (unsigned int)host->curr.xfer_size,
 		       MMCIDATALENGTH);
-	msmsdcc_writel(host, host->cmd_pio_irqmask, MMCIMASK1);
+	msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
+			(~MCI_IRQ_PIO)) | host->cmd_pio_irqmask, MMCIMASK0);
 	msmsdcc_writel(host, host->cmd_datactrl, MMCIDATACTRL);
 
 	if (host->cmd_cmd) {
@@ -388,7 +389,7 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
 	n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
 			host->dma.num_ents, host->dma.dir);
 	if (n == 0) {
-		printk(KERN_ERR "%s: Unable to map in all sg elements\n",
+		pr_err("%s: Unable to map in all sg elements\n",
 			mmc_hostname(host->mmc));
 		host->dma.sg = NULL;
 		host->dma.num_ents = 0;
@@ -474,7 +475,7 @@ msmsdcc_start_command_deferred(struct msmsdcc_host *host,
 		*c |= MCI_CSPM_MCIABORT;
 
 	if (host->curr.cmd != NULL) {
-		printk(KERN_ERR "%s: Overlapping command requests\n",
+		pr_err("%s: Overlapping command requests\n",
 			mmc_hostname(host->mmc));
 	}
 	host->curr.cmd = cmd;
@@ -543,7 +544,9 @@ msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
 
 		msmsdcc_writel(host, host->curr.xfer_size, MMCIDATALENGTH);
 
-		msmsdcc_writel(host, pio_irqmask, MMCIMASK1);
+		msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
+				(~MCI_IRQ_PIO)) | pio_irqmask, MMCIMASK0);
+
 		msmsdcc_writel(host, datactrl, MMCIDATACTRL);
 
 		if (cmd) {
@@ -659,8 +662,13 @@ msmsdcc_pio_irq(int irq, void *dev_id)
 {
 	struct msmsdcc_host	*host = dev_id;
 	uint32_t		status;
+	u32 mci_mask0;
 
 	status = msmsdcc_readl(host, MMCISTATUS);
+	mci_mask0 = msmsdcc_readl(host, MMCIMASK0);
+
+	if (((mci_mask0 & status) & MCI_IRQ_PIO) == 0)
+		return IRQ_NONE;
 
 	do {
 		unsigned long flags;
@@ -719,10 +727,12 @@ msmsdcc_pio_irq(int irq, void *dev_id)
 	} while (1);
 
 	if (status & MCI_RXACTIVE && host->curr.xfer_remain < MCI_FIFOSIZE)
-		msmsdcc_writel(host, MCI_RXDATAAVLBLMASK, MMCIMASK1);
+		msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) |
+					MCI_RXDATAAVLBLMASK, MMCIMASK0);
 
 	if (!host->curr.xfer_remain)
-		msmsdcc_writel(host, 0, MMCIMASK1);
+		msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | 0,
+					MMCIMASK0);
 
 	return IRQ_HANDLED;
 }
@@ -854,6 +864,8 @@ msmsdcc_irq(int irq, void *dev_id)
 	do {
 		status = msmsdcc_readl(host, MMCISTATUS);
 		status &= msmsdcc_readl(host, MMCIMASK0);
+		if ((status & (~MCI_IRQ_PIO)) == 0)
+			break;
 		msmsdcc_writel(host, status, MMCICLEAR);
 
 		if (status & MCI_SDIOINTR)
@@ -939,7 +951,7 @@ static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable)
 	struct msm_mmc_gpio_data *curr;
 	int i, rc = 0;
 
-	if (!host->plat->gpio_data && host->gpio_config_status == enable)
+	if (!host->plat->gpio_data || host->gpio_config_status == enable)
 		return;
 
 	curr = host->plat->gpio_data;
@@ -1052,10 +1064,19 @@ static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
+static void msmsdcc_init_card(struct mmc_host *mmc, struct mmc_card *card)
+{
+	struct msmsdcc_host *host = mmc_priv(mmc);
+
+	if (host->plat->init_card)
+		host->plat->init_card(card);
+}
+
 static const struct mmc_host_ops msmsdcc_ops = {
 	.request	= msmsdcc_request,
 	.set_ios	= msmsdcc_set_ios,
 	.enable_sdio_irq = msmsdcc_enable_sdio_irq,
+	.init_card	= msmsdcc_init_card,
 };
 
 static void
@@ -1092,7 +1113,7 @@ msmsdcc_platform_status_irq(int irq, void *dev_id)
 {
 	struct msmsdcc_host *host = dev_id;
 
-	printk(KERN_DEBUG "%s: %d\n", __func__, irq);
+	pr_debug("%s: %d\n", __func__, irq);
 	msmsdcc_check_status((unsigned long) host);
 	return IRQ_HANDLED;
 }
@@ -1102,7 +1123,7 @@ msmsdcc_status_notify_cb(int card_present, void *dev_id)
 {
 	struct msmsdcc_host *host = dev_id;
 
-	printk(KERN_DEBUG "%s: card_present %d\n", mmc_hostname(host->mmc),
+	pr_debug("%s: card_present %d\n", mmc_hostname(host->mmc),
 	       card_present);
 	msmsdcc_check_status((unsigned long) host);
 }
@@ -1150,7 +1171,6 @@ msmsdcc_probe(struct platform_device *pdev)
 	struct msmsdcc_host *host;
 	struct mmc_host *mmc;
 	struct resource *cmd_irqres = NULL;
-	struct resource *pio_irqres = NULL;
 	struct resource *stat_irqres = NULL;
 	struct resource *memres = NULL;
 	struct resource *dmares = NULL;
@@ -1175,12 +1195,10 @@ msmsdcc_probe(struct platform_device *pdev)
 	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
 	cmd_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 						  "cmd_irq");
-	pio_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-						  "pio_irq");
 	stat_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 						   "status_irq");
 
-	if (!cmd_irqres || !pio_irqres || !memres) {
+	if (!cmd_irqres || !memres) {
 		pr_err("%s: Invalid resource\n", __func__);
 		return -ENXIO;
 	}
@@ -1200,17 +1218,20 @@ msmsdcc_probe(struct platform_device *pdev)
 	host->plat = plat;
 	host->mmc = mmc;
 	host->curr.cmd = NULL;
+	init_timer(&host->busclk_timer);
+	host->busclk_timer.data = (unsigned long) host;
+	host->busclk_timer.function = msmsdcc_busclk_expired;
+
 
 	host->cmdpoll = 1;
 
 	host->base = ioremap(memres->start, PAGE_SIZE);
 	if (!host->base) {
 		ret = -ENOMEM;
-		goto out;
+		goto host_free;
 	}
 
 	host->cmd_irqres = cmd_irqres;
-	host->pio_irqres = pio_irqres;
 	host->memres = memres;
 	host->dmares = dmares;
 	spin_lock_init(&host->lock);
@@ -1221,13 +1242,19 @@ msmsdcc_probe(struct platform_device *pdev)
 	/*
 	 * Setup DMA
 	 */
-	msmsdcc_init_dma(host);
+	if (host->dmares) {
+		ret = msmsdcc_init_dma(host);
+		if (ret)
+			goto ioremap_free;
+	} else {
+		host->dma.channel = -1;
+	}
 
 	/* Get our clocks */
 	host->pclk = clk_get(&pdev->dev, "sdc_pclk");
 	if (IS_ERR(host->pclk)) {
 		ret = PTR_ERR(host->pclk);
-		goto host_free;
+		goto dma_free;
 	}
 
 	host->clk = clk_get(&pdev->dev, "sdc_clk");
@@ -1236,17 +1263,17 @@ msmsdcc_probe(struct platform_device *pdev)
 		goto pclk_put;
 	}
 
-	/* Enable clocks */
-	ret = msmsdcc_enable_clocks(host);
-	if (ret)
-		goto clk_put;
-
 	ret = clk_set_rate(host->clk, msmsdcc_fmin);
 	if (ret) {
 		pr_err("%s: Clock rate set failed (%d)\n", __func__, ret);
-		goto clk_disable;
+		goto clk_put;
 	}
 
+	/* Enable clocks */
+	ret = msmsdcc_enable_clocks(host);
+	if (ret)
+		goto clk_put;
+
 	host->pclk_rate = clk_get_rate(host->pclk);
 	host->clk_rate = clk_get_rate(host->clk);
 
@@ -1316,16 +1343,12 @@ msmsdcc_probe(struct platform_device *pdev)
 		host->eject = !host->oldstat;
 	}
 
-	init_timer(&host->busclk_timer);
-	host->busclk_timer.data = (unsigned long) host;
-	host->busclk_timer.function = msmsdcc_busclk_expired;
-
 	ret = request_irq(cmd_irqres->start, msmsdcc_irq, IRQF_SHARED,
 			  DRIVER_NAME " (cmd)", host);
 	if (ret)
 		goto stat_irq_free;
 
-	ret = request_irq(pio_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
+	ret = request_irq(cmd_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
 			  DRIVER_NAME " (pio)", host);
 	if (ret)
 		goto cmd_irq_free;
@@ -1368,6 +1391,13 @@ msmsdcc_probe(struct platform_device *pdev)
 	clk_put(host->clk);
  pclk_put:
 	clk_put(host->pclk);
+dma_free:
+	if (host->dmares)
+		dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
+					host->dma.nc, host->dma.nc_busaddr);
+ioremap_free:
+	tasklet_kill(&host->dma_tlet);
+	iounmap(host->base);
  host_free:
 	mmc_free_host(mmc);
  out:

drivers/mmc/host/msm_sdcc.h

@@ -140,6 +140,11 @@
 	MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|	\
 	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK)
 
+#define MCI_IRQ_PIO \
+	(MCI_RXDATAAVLBLMASK | MCI_TXDATAAVLBLMASK | MCI_RXFIFOEMPTYMASK | \
+	 MCI_TXFIFOEMPTYMASK | MCI_RXFIFOFULLMASK | MCI_TXFIFOFULLMASK | \
+	 MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK | \
+	 MCI_RXACTIVEMASK | MCI_TXACTIVEMASK)
 /*
  * The size of the FIFO in bytes.
  */
@@ -202,7 +207,6 @@ struct msmsdcc_stats {
 
 struct msmsdcc_host {
 	struct resource		*cmd_irqres;
-	struct resource		*pio_irqres;
 	struct resource		*memres;
 	struct resource		*dmares;
 	void __iomem		*base;

drivers/mmc/host/mvsdio.c

@@ -117,7 +117,7 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data)
 		host->pio_size = data->blocks * data->blksz;
 		host->pio_ptr = sg_virt(data->sg);
 		if (!nodma)
-			printk(KERN_DEBUG "%s: fallback to PIO for data "
+			pr_debug("%s: fallback to PIO for data "
 					  "at 0x%p size %d\n",
 					  mmc_hostname(host->mmc),
 					  host->pio_ptr, host->pio_size);
@@ -471,7 +471,7 @@ static irqreturn_t mvsd_irq(int irq, void *dev)
 		if (mrq->data)
 			err_status = mvsd_finish_data(host, mrq->data, err_status);
 		if (err_status) {
-			printk(KERN_ERR "%s: unhandled error status %#04x\n",
+			pr_err("%s: unhandled error status %#04x\n",
 					mmc_hostname(host->mmc), err_status);
 			cmd->error = -ENOMSG;
 		}
@@ -489,7 +489,7 @@ static irqreturn_t mvsd_irq(int irq, void *dev)
 	if (irq_handled)
 		return IRQ_HANDLED;
 
-	printk(KERN_ERR "%s: unhandled interrupt status=0x%04x en=0x%04x "
+	pr_err("%s: unhandled interrupt status=0x%04x en=0x%04x "
 			"pio=%d\n", mmc_hostname(host->mmc), intr_status,
 			host->intr_en, host->pio_size);
 	return IRQ_NONE;
@@ -505,9 +505,9 @@ static void mvsd_timeout_timer(unsigned long data)
 	spin_lock_irqsave(&host->lock, flags);
 	mrq = host->mrq;
 	if (mrq) {
-		printk(KERN_ERR "%s: Timeout waiting for hardware interrupt.\n",
+		pr_err("%s: Timeout waiting for hardware interrupt.\n",
 				mmc_hostname(host->mmc));
-		printk(KERN_ERR "%s: hw_state=0x%04x, intr_status=0x%04x "
+		pr_err("%s: hw_state=0x%04x, intr_status=0x%04x "
 				"intr_en=0x%04x\n", mmc_hostname(host->mmc),
 				mvsd_read(MVSD_HW_STATE),
 				mvsd_read(MVSD_NOR_INTR_STATUS),
@@ -762,7 +762,7 @@ static int __init mvsd_probe(struct platform_device *pdev)
 
 	ret = request_irq(irq, mvsd_irq, 0, DRIVER_NAME, host);
 	if (ret) {
-		printk(KERN_ERR "%s: cannot assign irq %d\n", DRIVER_NAME, irq);
+		pr_err("%s: cannot assign irq %d\n", DRIVER_NAME, irq);
 		goto out;
 	} else
 		host->irq = irq;
@@ -802,7 +802,7 @@ static int __init mvsd_probe(struct platform_device *pdev)
 	if (ret)
 		goto out;
 
-	printk(KERN_NOTICE "%s: %s driver initialized, ",
+	pr_notice("%s: %s driver initialized, ",
 			   mmc_hostname(mmc), DRIVER_NAME);
 	if (host->gpio_card_detect)
 		printk("using GPIO %d for card detection\n",

drivers/mmc/host/mxcmmc.c

@@ -842,7 +842,7 @@ static int mxcmci_probe(struct platform_device *pdev)
 	int ret = 0, irq;
 	dma_cap_mask_t mask;
 
-	printk(KERN_INFO "i.MX SDHC driver\n");
+	pr_info("i.MX SDHC driver\n");
 
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);

drivers/mmc/host/mxs-mmc.c

@@ -37,6 +37,7 @@
 #include <linux/mmc/sdio.h>
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
+#include <linux/module.h>
 
 #include <mach/mxs.h>
 #include <mach/common.h>

drivers/mmc/host/omap_hsmmc.c

@@ -450,15 +450,14 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
 		* framework is fixed, we need a workaround like this
 		* (which is safe for MMC, but not in general).
 		*/
-		if (regulator_is_enabled(host->vcc) > 0) {
-			regulator_enable(host->vcc);
-			regulator_disable(host->vcc);
-		}
-		if (host->vcc_aux) {
-			if (regulator_is_enabled(reg) > 0) {
-				regulator_enable(reg);
-				regulator_disable(reg);
-			}
+		if (regulator_is_enabled(host->vcc) > 0 ||
+		    (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) {
+			int vdd = ffs(mmc_slot(host).ocr_mask) - 1;
+
+			mmc_slot(host).set_power(host->dev, host->slot_id,
+						 1, vdd);
+			mmc_slot(host).set_power(host->dev, host->slot_id,
+						 0, 0);
 		}
 	}
 
@@ -1264,14 +1263,14 @@ 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) {
-			printk(KERN_INFO "%s: cover is closed, "
+			pr_info("%s: cover is closed, "
 					 "card is now accessible\n",
 					 mmc_hostname(host->mmc));
 			host->protect_card = 0;
 		}
 	} else {
 		if (!host->protect_card) {
-			printk(KERN_INFO "%s: cover is open, "
+			pr_info"%s: cover is open, "
 					 "card is now inaccessible\n",
 					 mmc_hostname(host->mmc));
 			host->protect_card = 1;
@@ -1422,7 +1421,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
 
 	if (!next && data->host_cookie &&
 	    data->host_cookie != host->next_data.cookie) {
-		printk(KERN_WARNING "[%s] invalid cookie: data->host_cookie %d"
+		pr_warning("[%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;
@@ -1943,6 +1942,10 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	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;
+	}
 
 	pm_runtime_enable(host->dev);
 	pm_runtime_get_sync(host->dev);
@@ -2015,7 +2018,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	}
 
 	/* Request IRQ for MMC operations */
-	ret = request_irq(host->irq, omap_hsmmc_irq, IRQF_DISABLED,
+	ret = request_irq(host->irq, omap_hsmmc_irq, 0,
 			mmc_hostname(mmc), host);
 	if (ret) {
 		dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n");
@@ -2043,8 +2046,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	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
-					  | IRQF_DISABLED,
+				  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 				  mmc_hostname(mmc), host);
 		if (ret) {
 			dev_dbg(mmc_dev(host->mmc),

drivers/mmc/host/pxamci.c

@@ -558,7 +558,7 @@ static void pxamci_dma_irq(int dma, void *devid)
 	if (dcsr & DCSR_ENDINTR) {
 		writel(BUF_PART_FULL, host->base + MMC_PRTBUF);
 	} else {
-		printk(KERN_ERR "%s: DMA error on channel %d (DCSR=%#x)\n",
+		pr_err("%s: DMA error on channel %d (DCSR=%#x)\n",
 		       mmc_hostname(host->mmc), dma, dcsr);
 		host->data->error = -EIO;
 		pxamci_data_done(host, 0);

drivers/mmc/host/s3cmci.c

@@ -247,7 +247,7 @@ static void s3cmci_check_sdio_irq(struct s3cmci_host *host)
 {
 	if (host->sdio_irqen) {
 		if (gpio_get_value(S3C2410_GPE(8)) == 0) {
-			printk(KERN_DEBUG "%s: signalling irq\n", __func__);
+			pr_debug("%s: signalling irq\n", __func__);
 			mmc_signal_sdio_irq(host->mmc);
 		}
 	}
@@ -344,7 +344,7 @@ static void s3cmci_disable_irq(struct s3cmci_host *host, bool transfer)
 
 	local_irq_save(flags);
 
-	//printk(KERN_DEBUG "%s: transfer %d\n", __func__, transfer);
+	/* pr_debug("%s: transfer %d\n", __func__, transfer); */
 
 	host->irq_disabled = transfer;
 

drivers/mmc/host/sdhci-esdhc-imx.c

@@ -32,6 +32,15 @@
 /* VENDOR SPEC register */
 #define SDHCI_VENDOR_SPEC		0xC0
 #define  SDHCI_VENDOR_SPEC_SDIO_QUIRK	0x00000002
+#define SDHCI_MIX_CTRL			0x48
+
+/*
+ * There is an INT DMA ERR mis-match between eSDHC and STD SDHC SPEC:
+ * Bit25 is used in STD SPEC, and is reserved in fsl eSDHC design,
+ * but bit28 is used as the INT DMA ERR in fsl eSDHC design.
+ * Define this macro DMA error INT for fsl eSDHC
+ */
+#define SDHCI_INT_VENDOR_SPEC_DMA_ERR	0x10000000
 
 /*
  * The CMDTYPE of the CMD register (offset 0xE) should be set to
@@ -51,6 +60,7 @@ enum imx_esdhc_type {
 	IMX35_ESDHC,
 	IMX51_ESDHC,
 	IMX53_ESDHC,
+	IMX6Q_USDHC,
 };
 
 struct pltfm_imx_data {
@@ -73,6 +83,9 @@ static struct platform_device_id imx_esdhc_devtype[] = {
 	}, {
 		.name = "sdhci-esdhc-imx53",
 		.driver_data = IMX53_ESDHC,
+	}, {
+		.name = "sdhci-usdhc-imx6q",
+		.driver_data = IMX6Q_USDHC,
 	}, {
 		/* sentinel */
 	}
@@ -84,6 +97,7 @@ static const struct of_device_id imx_esdhc_dt_ids[] = {
 	{ .compatible = "fsl,imx35-esdhc", .data = &imx_esdhc_devtype[IMX35_ESDHC], },
 	{ .compatible = "fsl,imx51-esdhc", .data = &imx_esdhc_devtype[IMX51_ESDHC], },
 	{ .compatible = "fsl,imx53-esdhc", .data = &imx_esdhc_devtype[IMX53_ESDHC], },
+	{ .compatible = "fsl,imx6q-usdhc", .data = &imx_esdhc_devtype[IMX6Q_USDHC], },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids);
@@ -108,6 +122,11 @@ static inline int is_imx53_esdhc(struct pltfm_imx_data *data)
 	return data->devtype == IMX53_ESDHC;
 }
 
+static inline int is_imx6q_usdhc(struct pltfm_imx_data *data)
+{
+	return data->devtype == IMX6Q_USDHC;
+}
+
 static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, int reg)
 {
 	void __iomem *base = host->ioaddr + (reg & ~0x3);
@@ -135,6 +154,27 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
 			val |= SDHCI_CARD_PRESENT;
 	}
 
+	if (unlikely(reg == SDHCI_CAPABILITIES)) {
+		/* In FSL esdhc IC module, only bit20 is used to indicate the
+		 * ADMA2 capability of esdhc, but this bit is messed up on
+		 * some SOCs (e.g. on MX25, MX35 this bit is set, but they
+		 * don't actually support ADMA2). So set the BROKEN_ADMA
+		 * uirk on MX25/35 platforms.
+		 */
+
+		if (val & SDHCI_CAN_DO_ADMA1) {
+			val &= ~SDHCI_CAN_DO_ADMA1;
+			val |= SDHCI_CAN_DO_ADMA2;
+		}
+	}
+
+	if (unlikely(reg == SDHCI_INT_STATUS)) {
+		if (val & SDHCI_INT_VENDOR_SPEC_DMA_ERR) {
+			val &= ~SDHCI_INT_VENDOR_SPEC_DMA_ERR;
+			val |= SDHCI_INT_ADMA_ERROR;
+		}
+	}
+
 	return val;
 }
 
@@ -179,13 +219,28 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg)
 			writel(v, host->ioaddr + SDHCI_VENDOR_SPEC);
 	}
 
+	if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) {
+		if (val & SDHCI_INT_ADMA_ERROR) {
+			val &= ~SDHCI_INT_ADMA_ERROR;
+			val |= SDHCI_INT_VENDOR_SPEC_DMA_ERR;
+		}
+	}
+
 	writel(val, host->ioaddr + reg);
 }
 
 static u16 esdhc_readw_le(struct sdhci_host *host, int reg)
 {
-	if (unlikely(reg == SDHCI_HOST_VERSION))
-		reg ^= 2;
+	if (unlikely(reg == SDHCI_HOST_VERSION)) {
+		u16 val = readw(host->ioaddr + (reg ^ 2));
+		/*
+		 * uSDHC supports SDHCI v3.0, but it's encoded as value
+		 * 0x3 in host controller version register, which violates
+		 * SDHCI_SPEC_300 definition.  Work it around here.
+		 */
+		if ((val & SDHCI_SPEC_VER_MASK) == 3)
+			return --val;
+	}
 
 	return readw(host->ioaddr + reg);
 }
@@ -216,8 +271,17 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
 		if ((host->cmd->opcode == MMC_STOP_TRANSMISSION)
 			&& (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT))
 			val |= SDHCI_CMD_ABORTCMD;
-		writel(val << 16 | imx_data->scratchpad,
-			host->ioaddr + SDHCI_TRANSFER_MODE);
+
+		if (is_imx6q_usdhc(imx_data)) {
+			u32 m = readl(host->ioaddr + SDHCI_MIX_CTRL);
+			m = imx_data->scratchpad | (m & 0xffff0000);
+			writel(m, host->ioaddr + SDHCI_MIX_CTRL);
+			writel(val << 16,
+			       host->ioaddr + SDHCI_TRANSFER_MODE);
+		} else {
+			writel(val << 16 | imx_data->scratchpad,
+			       host->ioaddr + SDHCI_TRANSFER_MODE);
+		}
 		return;
 	case SDHCI_BLOCK_SIZE:
 		val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
@@ -311,9 +375,10 @@ static struct sdhci_ops sdhci_esdhc_ops = {
 };
 
 static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
-	.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA
+	.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_NO_HISPD_BIT
+			| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
+			| SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC
 			| SDHCI_QUIRK_BROKEN_CARD_DETECTION,
-	/* ADMA has issues. Might be fixable */
 	.ops = &sdhci_esdhc_ops,
 };
 
@@ -405,7 +470,8 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 
 	if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data))
 		/* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */
-		host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
+		host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK
+			| SDHCI_QUIRK_BROKEN_ADMA;
 
 	if (is_imx53_esdhc(imx_data))
 		imx_data->flags |= ESDHC_FLAG_MULTIBLK_NO_INT;

drivers/mmc/host/sdhci-of-esdhc.c

@@ -1,7 +1,7 @@
 /*
  * Freescale eSDHC controller driver.
  *
- * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2007, 2010 Freescale Semiconductor, Inc.
  * Copyright (c) 2009 MontaVista Software, Inc.
  *
  * Authors: Xiaobo Xie <X.Xie@freescale.com>
@@ -15,6 +15,7 @@
 
 #include <linux/io.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/mmc/host.h>
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
@@ -22,11 +23,21 @@
 static u16 esdhc_readw(struct sdhci_host *host, int reg)
 {
 	u16 ret;
+	int base = reg & ~0x3;
+	int shift = (reg & 0x2) * 8;
 
 	if (unlikely(reg == SDHCI_HOST_VERSION))
-		ret = in_be16(host->ioaddr + reg);
+		ret = in_be32(host->ioaddr + base) & 0xffff;
 	else
-		ret = sdhci_be32bs_readw(host, reg);
+		ret = (in_be32(host->ioaddr + base) >> shift) & 0xffff;
+	return ret;
+}
+
+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;
 	return ret;
 }
 
@@ -74,7 +85,7 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host)
 static struct sdhci_ops sdhci_esdhc_ops = {
 	.read_l = sdhci_be32bs_readl,
 	.read_w = esdhc_readw,
-	.read_b = sdhci_be32bs_readb,
+	.read_b = esdhc_readb,
 	.write_l = sdhci_be32bs_writel,
 	.write_w = esdhc_writew,
 	.write_b = esdhc_writeb,

drivers/mmc/host/sdhci-of-hlwd.c

@@ -20,6 +20,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/mmc/host.h>
 #include "sdhci-pltfm.h"
 

drivers/mmc/host/sdhci-pci.c

@@ -14,6 +14,7 @@
 
 #include <linux/delay.h>
 #include <linux/highmem.h>
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 #include <linux/slab.h>
@@ -21,6 +22,9 @@
 #include <linux/mmc/host.h>
 #include <linux/scatterlist.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/sfi.h>
+#include <linux/pm_runtime.h>
 
 #include "sdhci.h"
 
@@ -43,6 +47,7 @@ struct sdhci_pci_slot;
 
 struct sdhci_pci_fixes {
 	unsigned int		quirks;
+	bool			allow_runtime_pm;
 
 	int			(*probe) (struct sdhci_pci_chip *);
 
@@ -59,12 +64,16 @@ struct sdhci_pci_slot {
 	struct sdhci_host	*host;
 
 	int			pci_bar;
+	int			rst_n_gpio;
+	int			cd_gpio;
+	int			cd_irq;
 };
 
 struct sdhci_pci_chip {
 	struct pci_dev		*pdev;
 
 	unsigned int		quirks;
+	bool			allow_runtime_pm;
 	const struct sdhci_pci_fixes *fixes;
 
 	int			num_slots;	/* Slots on controller */
@@ -163,12 +172,129 @@ 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)
+{
+	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;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_RUNTIME
+
+static irqreturn_t mfd_sd_cd(int irq, void *dev_id)
+{
+	struct sdhci_pci_slot *slot = dev_id;
+	struct sdhci_host *host = slot->host;
+
+	mmc_detect_change(host->mmc, msecs_to_jiffies(200));
+	return IRQ_HANDLED;
+}
+
+#define MFLD_SD_CD_PIN 69
+
+static int mfd_sd_probe_slot(struct sdhci_pci_slot *slot)
+{
+	int err, irq, gpio = MFLD_SD_CD_PIN;
+
+	slot->cd_gpio = -EINVAL;
+	slot->cd_irq = -EINVAL;
+
+	err = gpio_request(gpio, "sd_cd");
+	if (err < 0)
+		goto out;
+
+	err = gpio_direction_input(gpio);
+	if (err < 0)
+		goto out_free;
+
+	irq = gpio_to_irq(gpio);
+	if (irq < 0)
+		goto out_free;
+
+	err = request_irq(irq, mfd_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;
+
+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)
+{
+	if (slot->cd_irq >= 0)
+		free_irq(slot->cd_irq, slot);
+	gpio_free(slot->cd_gpio);
+}
+
+#else
+
+#define mfd_sd_probe_slot	NULL
+#define mfd_sd_remove_slot	NULL
+
+#endif
+
 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
-	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+	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;
+
 	return 0;
 }
 
+static void mfd_emmc_remove_slot(struct sdhci_pci_slot *slot, int dead)
+{
+	gpio_free(slot->rst_n_gpio);
+}
+
 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
 	.quirks		= SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
 	.probe_slot	= mrst_hc_probe_slot,
@@ -181,15 +307,21 @@ 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,
+	.allow_runtime_pm = true,
 };
 
 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,
 };
 
 /* O2Micro extra registers */
@@ -832,9 +964,25 @@ static int sdhci_pci_8bit_width(struct sdhci_host *host, int width)
 	return 0;
 }
 
+static void sdhci_pci_hw_reset(struct sdhci_host *host)
+{
+	struct sdhci_pci_slot *slot = sdhci_priv(host);
+	int rst_n_gpio = slot->rst_n_gpio;
+
+	if (!gpio_is_valid(rst_n_gpio))
+		return;
+	gpio_set_value_cansleep(rst_n_gpio, 0);
+	/* For eMMC, minimum is 1us but give it 10us for good measure */
+	udelay(10);
+	gpio_set_value_cansleep(rst_n_gpio, 1);
+	/* For eMMC, minimum is 200us but give it 300us for good measure */
+	usleep_range(300, 1000);
+}
+
 static struct sdhci_ops sdhci_pci_ops = {
 	.enable_dma	= sdhci_pci_enable_dma,
 	.platform_8bit_width	= sdhci_pci_8bit_width,
+	.hw_reset		= sdhci_pci_hw_reset,
 };
 
 /*****************************************************************************\
@@ -944,6 +1092,95 @@ static int sdhci_pci_resume(struct pci_dev *pdev)
 
 #endif /* CONFIG_PM */
 
+#ifdef CONFIG_PM_RUNTIME
+
+static int sdhci_pci_runtime_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
+	struct sdhci_pci_chip *chip;
+	struct sdhci_pci_slot *slot;
+	pm_message_t state = { .event = PM_EVENT_SUSPEND };
+	int i, ret;
+
+	chip = pci_get_drvdata(pdev);
+	if (!chip)
+		return 0;
+
+	for (i = 0; i < chip->num_slots; i++) {
+		slot = chip->slots[i];
+		if (!slot)
+			continue;
+
+		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 (chip->fixes && chip->fixes->suspend) {
+		ret = chip->fixes->suspend(chip, state);
+		if (ret) {
+			for (i = chip->num_slots - 1; i >= 0; i--)
+				sdhci_runtime_resume_host(chip->slots[i]->host);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int sdhci_pci_runtime_resume(struct device *dev)
+{
+	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
+	struct sdhci_pci_chip *chip;
+	struct sdhci_pci_slot *slot;
+	int i, ret;
+
+	chip = pci_get_drvdata(pdev);
+	if (!chip)
+		return 0;
+
+	if (chip->fixes && chip->fixes->resume) {
+		ret = chip->fixes->resume(chip);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < chip->num_slots; i++) {
+		slot = chip->slots[i];
+		if (!slot)
+			continue;
+
+		ret = sdhci_runtime_resume_host(slot->host);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int sdhci_pci_runtime_idle(struct device *dev)
+{
+	return 0;
+}
+
+#else
+
+#define sdhci_pci_runtime_suspend	NULL
+#define sdhci_pci_runtime_resume	NULL
+#define sdhci_pci_runtime_idle		NULL
+
+#endif
+
+static const struct dev_pm_ops sdhci_pci_pm_ops = {
+	.runtime_suspend = sdhci_pci_runtime_suspend,
+	.runtime_resume = sdhci_pci_runtime_resume,
+	.runtime_idle = sdhci_pci_runtime_idle,
+};
+
 /*****************************************************************************\
  *                                                                           *
  * Device probing/removal                                                    *
@@ -988,6 +1225,7 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 	slot->chip = chip;
 	slot->host = host;
 	slot->pci_bar = bar;
+	slot->rst_n_gpio = -EINVAL;
 
 	host->hw_name = "PCI";
 	host->ops = &sdhci_pci_ops;
@@ -1058,6 +1296,21 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
 	sdhci_free_host(slot->host);
 }
 
+static void __devinit sdhci_pci_runtime_pm_allow(struct device *dev)
+{
+	pm_runtime_put_noidle(dev);
+	pm_runtime_allow(dev);
+	pm_runtime_set_autosuspend_delay(dev, 50);
+	pm_runtime_use_autosuspend(dev);
+	pm_suspend_ignore_children(dev, 1);
+}
+
+static void __devexit sdhci_pci_runtime_pm_forbid(struct device *dev)
+{
+	pm_runtime_forbid(dev);
+	pm_runtime_get_noresume(dev);
+}
+
 static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
 				     const struct pci_device_id *ent)
 {
@@ -1107,8 +1360,10 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
 
 	chip->pdev = pdev;
 	chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
-	if (chip->fixes)
+	if (chip->fixes) {
 		chip->quirks = chip->fixes->quirks;
+		chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
+	}
 	chip->num_slots = slots;
 
 	pci_set_drvdata(pdev, chip);
@@ -1133,6 +1388,9 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
 		chip->slots[i] = slot;
 	}
 
+	if (chip->allow_runtime_pm)
+		sdhci_pci_runtime_pm_allow(&pdev->dev);
+
 	return 0;
 
 free:
@@ -1152,6 +1410,9 @@ static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
 	chip = pci_get_drvdata(pdev);
 
 	if (chip) {
+		if (chip->allow_runtime_pm)
+			sdhci_pci_runtime_pm_forbid(&pdev->dev);
+
 		for (i = 0; i < chip->num_slots; i++)
 			sdhci_pci_remove_slot(chip->slots[i]);
 
@@ -1169,6 +1430,9 @@ static struct pci_driver sdhci_driver = {
 	.remove =	__devexit_p(sdhci_pci_remove),
 	.suspend =	sdhci_pci_suspend,
 	.resume	=	sdhci_pci_resume,
+	.driver =	{
+		.pm =   &sdhci_pci_pm_ops
+	},
 };
 
 /*****************************************************************************\

drivers/mmc/host/sdhci-pltfm.c

@@ -29,6 +29,7 @@
  */
 
 #include <linux/err.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #ifdef CONFIG_PPC
 #include <asm/machdep.h>

drivers/mmc/host/sdhci-pxav2.c

@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <linux/mmc/card.h>
@@ -59,7 +60,7 @@ static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
 		 * tune timing of read data/command when crc error happen
 		 * no performance impact
 		 */
-		if (pdata->clk_delay_sel == 1) {
+		if (pdata && pdata->clk_delay_sel == 1) {
 			tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
 
 			tmp &= ~(SDCLK_DELAY_MASK << SDCLK_DELAY_SHIFT);
@@ -71,7 +72,7 @@ static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
 			writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
 		}
 
-		if (pdata->flags & PXA_FLAG_ENABLE_CLOCK_GATING) {
+		if (pdata && (pdata->flags & PXA_FLAG_ENABLE_CLOCK_GATING)) {
 			tmp = readw(host->ioaddr + SD_FIFO_PARAM);
 			tmp &= ~CLK_GATE_SETTING_BITS;
 			writew(tmp, host->ioaddr + SD_FIFO_PARAM);

drivers/mmc/host/sdhci-pxav3.c

@@ -27,6 +27,7 @@
 #include <linux/platform_data/pxa_sdhci.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 #include "sdhci.h"
 #include "sdhci-pltfm.h"
 

drivers/mmc/host/sdhci-s3c.c

@@ -203,17 +203,23 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
 		writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
 	}
 
-	/* reconfigure the hardware for new clock rate */
-
-	{
-		struct mmc_ios ios;
-
-		ios.clock = clock;
-
-		if (ourhost->pdata->cfg_card)
-			(ourhost->pdata->cfg_card)(ourhost->pdev, host->ioaddr,
-						   &ios, NULL);
-	}
+	/* reprogram default hardware configuration */
+	writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA,
+		host->ioaddr + S3C64XX_SDHCI_CONTROL4);
+
+	ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+	ctrl |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
+		  S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
+		  S3C_SDHCI_CTRL2_ENFBCLKRX |
+		  S3C_SDHCI_CTRL2_DFCNT_NONE |
+		  S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
+	writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
+
+	/* reconfigure the controller for new clock rate */
+	ctrl = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
+	if (clock < 25 * 1000000)
+		ctrl |= (S3C_SDHCI_CTRL3_FCSEL3 | S3C_SDHCI_CTRL3_FCSEL2);
+	writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL3);
 }
 
 /**
@@ -561,8 +567,10 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
  err_req_regs:
 	for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
-		clk_disable(sc->clk_bus[ptr]);
-		clk_put(sc->clk_bus[ptr]);
+		if (sc->clk_bus[ptr]) {
+			clk_disable(sc->clk_bus[ptr]);
+			clk_put(sc->clk_bus[ptr]);
+		}
 	}
 
  err_no_busclks:

drivers/mmc/host/sdhci-spear.c

@@ -17,6 +17,7 @@
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/highmem.h>
+#include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
@@ -177,8 +178,6 @@ static int __devinit sdhci_probe(struct platform_device *pdev)
 					sdhci->data->card_power_gpio);
 			goto err_pgpio_direction;
 		}
-
-		gpio_set_value(sdhci->data->card_power_gpio, 1);
 	}
 
 	if (sdhci->data->card_int_gpio >= 0) {

drivers/mmc/host/sdhci-tegra.c

@@ -17,9 +17,12 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/of.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>
 
@@ -75,10 +78,8 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 
 static unsigned int tegra_sdhci_get_ro(struct sdhci_host *sdhci)
 {
-	struct platform_device *pdev = to_platform_device(mmc_dev(sdhci->mmc));
-	struct tegra_sdhci_platform_data *plat;
-
-	plat = pdev->dev.platform_data;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(sdhci);
+	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
 
 	if (!gpio_is_valid(plat->wp_gpio))
 		return -1;
@@ -96,12 +97,10 @@ static irqreturn_t carddetect_irq(int irq, void *data)
 
 static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width)
 {
-	struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
-	struct tegra_sdhci_platform_data *plat;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
 	u32 ctrl;
 
-	plat = pdev->dev.platform_data;
-
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	if (plat->is_8bit && bus_width == MMC_BUS_WIDTH_8) {
 		ctrl &= ~SDHCI_CTRL_4BITBUS;
@@ -133,6 +132,36 @@ static struct sdhci_pltfm_data sdhci_tegra_pdata = {
 	.ops  = &tegra_sdhci_ops,
 };
 
+static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = {
+	{ .compatible = "nvidia,tegra20-sdhci", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sdhci_dt_ids);
+
+static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
+						struct platform_device *pdev)
+{
+	struct tegra_sdhci_platform_data *plat;
+	struct device_node *np = pdev->dev.of_node;
+
+	if (!np)
+		return NULL;
+
+	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	if (!plat) {
+		dev_err(&pdev->dev, "Can't allocate platform data\n");
+		return NULL;
+	}
+
+	plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
+	plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
+	plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
+	if (of_find_property(np, "support-8bit", NULL))
+		plat->is_8bit = 1;
+
+	return plat;
+}
+
 static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
 {
 	struct sdhci_pltfm_host *pltfm_host;
@@ -149,12 +178,17 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
 
 	plat = pdev->dev.platform_data;
 
+	if (plat == NULL)
+		plat = sdhci_tegra_dt_parse_pdata(pdev);
+
 	if (plat == NULL) {
 		dev_err(mmc_dev(host->mmc), "missing platform data\n");
 		rc = -ENXIO;
 		goto err_no_plat;
 	}
 
+	pltfm_host->priv = plat;
+
 	if (gpio_is_valid(plat->power_gpio)) {
 		rc = gpio_request(plat->power_gpio, "sdhci_power");
 		if (rc) {
@@ -249,13 +283,11 @@ 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;
+	struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
 	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
 
 	sdhci_remove_host(host, dead);
 
-	plat = pdev->dev.platform_data;
-
 	if (gpio_is_valid(plat->wp_gpio)) {
 		tegra_gpio_disable(plat->wp_gpio);
 		gpio_free(plat->wp_gpio);
@@ -284,6 +316,7 @@ static struct platform_driver sdhci_tegra_driver = {
 	.driver		= {
 		.name	= "sdhci-tegra",
 		.owner	= THIS_MODULE,
+		.of_match_table = sdhci_tegra_dt_match,
 	},
 	.probe		= sdhci_tegra_probe,
 	.remove		= __devexit_p(sdhci_tegra_remove),

drivers/mmc/host/sdhci.c

@@ -16,10 +16,12 @@
 #include <linux/delay.h>
 #include <linux/highmem.h>
 #include <linux/io.h>
+#include <linux/module.h>
 #include <linux/dma-mapping.h>
 #include <linux/slab.h>
 #include <linux/scatterlist.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/leds.h>
 
@@ -41,6 +43,7 @@
 #define MAX_TUNING_LOOP 40
 
 static unsigned int debug_quirks = 0;
+static unsigned int debug_quirks2;
 
 static void sdhci_finish_data(struct sdhci_host *);
 
@@ -49,53 +52,67 @@ static void sdhci_finish_command(struct sdhci_host *);
 static int sdhci_execute_tuning(struct mmc_host *mmc);
 static void sdhci_tuning_timer(unsigned long data);
 
+#ifdef CONFIG_PM_RUNTIME
+static int sdhci_runtime_pm_get(struct sdhci_host *host);
+static int sdhci_runtime_pm_put(struct sdhci_host *host);
+#else
+static inline int sdhci_runtime_pm_get(struct sdhci_host *host)
+{
+	return 0;
+}
+static inline int sdhci_runtime_pm_put(struct sdhci_host *host)
+{
+	return 0;
+}
+#endif
+
 static void sdhci_dumpregs(struct sdhci_host *host)
 {
-	printk(KERN_DEBUG DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
+	pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
 		mmc_hostname(host->mmc));
 
-	printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
+	pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
 		sdhci_readl(host, SDHCI_DMA_ADDRESS),
 		sdhci_readw(host, SDHCI_HOST_VERSION));
-	printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
+	pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
 		sdhci_readw(host, SDHCI_BLOCK_SIZE),
 		sdhci_readw(host, SDHCI_BLOCK_COUNT));
-	printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
 		sdhci_readl(host, SDHCI_ARGUMENT),
 		sdhci_readw(host, SDHCI_TRANSFER_MODE));
-	printk(KERN_DEBUG DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
 		sdhci_readl(host, SDHCI_PRESENT_STATE),
 		sdhci_readb(host, SDHCI_HOST_CONTROL));
-	printk(KERN_DEBUG DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
+	pr_debug(DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
 		sdhci_readb(host, SDHCI_POWER_CONTROL),
 		sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
-	printk(KERN_DEBUG DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
+	pr_debug(DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
 		sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
 		sdhci_readw(host, SDHCI_CLOCK_CONTROL));
-	printk(KERN_DEBUG DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
 		sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
 		sdhci_readl(host, SDHCI_INT_STATUS));
-	printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
 		sdhci_readl(host, SDHCI_INT_ENABLE),
 		sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
-	printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
 		sdhci_readw(host, SDHCI_ACMD12_ERR),
 		sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
-	printk(KERN_DEBUG DRIVER_NAME ": Caps:     0x%08x | Caps_1:   0x%08x\n",
+	pr_debug(DRIVER_NAME ": Caps:     0x%08x | Caps_1:   0x%08x\n",
 		sdhci_readl(host, SDHCI_CAPABILITIES),
 		sdhci_readl(host, SDHCI_CAPABILITIES_1));
-	printk(KERN_DEBUG DRIVER_NAME ": Cmd:      0x%08x | Max curr: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Cmd:      0x%08x | Max curr: 0x%08x\n",
 		sdhci_readw(host, SDHCI_COMMAND),
 		sdhci_readl(host, SDHCI_MAX_CURRENT));
-	printk(KERN_DEBUG DRIVER_NAME ": Host ctl2: 0x%08x\n",
+	pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n",
 		sdhci_readw(host, SDHCI_HOST_CONTROL2));
 
 	if (host->flags & SDHCI_USE_ADMA)
-		printk(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
+		pr_debug(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
 		       readl(host->ioaddr + SDHCI_ADMA_ERROR),
 		       readl(host->ioaddr + SDHCI_ADMA_ADDRESS));
 
-	printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
+	pr_debug(DRIVER_NAME ": ===========================================\n");
 }
 
 /*****************************************************************************\
@@ -132,6 +149,9 @@ static void sdhci_set_card_detection(struct sdhci_host *host, bool enable)
 	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
 		return;
 
+	if (host->quirks2 & SDHCI_QUIRK2_OWN_CARD_DETECTION)
+		return;
+
 	present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
 			      SDHCI_CARD_PRESENT;
 	irqs = present ? SDHCI_INT_CARD_REMOVE : SDHCI_INT_CARD_INSERT;
@@ -180,7 +200,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 	/* hw clears the bit when it's done */
 	while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
 		if (timeout == 0) {
-			printk(KERN_ERR "%s: Reset 0x%x never completed.\n",
+			pr_err("%s: Reset 0x%x never completed.\n",
 				mmc_hostname(host->mmc), (int)mask);
 			sdhci_dumpregs(host);
 			return;
@@ -251,11 +271,14 @@ static void sdhci_led_control(struct led_classdev *led,
 
 	spin_lock_irqsave(&host->lock, flags);
 
+	if (host->runtime_suspended)
+		goto out;
+
 	if (brightness == LED_OFF)
 		sdhci_deactivate_led(host);
 	else
 		sdhci_activate_led(host);
-
+out:
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 #endif
@@ -654,7 +677,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
 	}
 
 	if (count >= 0xF) {
-		printk(KERN_WARNING "%s: Too large timeout requested for CMD%d!\n",
+		pr_warning("%s: Too large timeout requested for CMD%d!\n",
 		       mmc_hostname(host->mmc), cmd->opcode);
 		count = 0xE;
 	}
@@ -949,7 +972,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 
 	while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
 		if (timeout == 0) {
-			printk(KERN_ERR "%s: Controller never released "
+			pr_err("%s: Controller never released "
 				"inhibit bit(s).\n", mmc_hostname(host->mmc));
 			sdhci_dumpregs(host);
 			cmd->error = -EIO;
@@ -971,7 +994,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 	sdhci_set_transfer_mode(host, cmd);
 
 	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
-		printk(KERN_ERR "%s: Unsupported response type!\n",
+		pr_err("%s: Unsupported response type!\n",
 			mmc_hostname(host->mmc));
 		cmd->error = -EINVAL;
 		tasklet_schedule(&host->finish_tasklet);
@@ -1121,7 +1144,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
 		& SDHCI_CLOCK_INT_STABLE)) {
 		if (timeout == 0) {
-			printk(KERN_ERR "%s: Internal clock never "
+			pr_err("%s: Internal clock never "
 				"stabilised.\n", mmc_hostname(host->mmc));
 			sdhci_dumpregs(host);
 			return;
@@ -1209,6 +1232,8 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
 	host = mmc_priv(mmc);
 
+	sdhci_runtime_pm_get(host);
+
 	spin_lock_irqsave(&host->lock, flags);
 
 	WARN_ON(host->mrq != NULL);
@@ -1269,14 +1294,11 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
-static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 {
-	struct sdhci_host *host;
 	unsigned long flags;
 	u8 ctrl;
 
-	host = mmc_priv(mmc);
-
 	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->flags & SDHCI_DEVICE_DEAD)
@@ -1426,7 +1448,16 @@ out:
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
-static int check_ro(struct sdhci_host *host)
+static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+
+	sdhci_runtime_pm_get(host);
+	sdhci_do_set_ios(host, ios);
+	sdhci_runtime_pm_put(host);
+}
+
+static int sdhci_check_ro(struct sdhci_host *host)
 {
 	unsigned long flags;
 	int is_readonly;
@@ -1450,19 +1481,16 @@ static int check_ro(struct sdhci_host *host)
 
 #define SAMPLE_COUNT	5
 
-static int sdhci_get_ro(struct mmc_host *mmc)
+static int sdhci_do_get_ro(struct sdhci_host *host)
 {
-	struct sdhci_host *host;
 	int i, ro_count;
 
-	host = mmc_priv(mmc);
-
 	if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT))
-		return check_ro(host);
+		return sdhci_check_ro(host);
 
 	ro_count = 0;
 	for (i = 0; i < SAMPLE_COUNT; i++) {
-		if (check_ro(host)) {
+		if (sdhci_check_ro(host)) {
 			if (++ro_count > SAMPLE_COUNT / 2)
 				return 1;
 		}
@@ -1471,38 +1499,64 @@ static int sdhci_get_ro(struct mmc_host *mmc)
 	return 0;
 }
 
-static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+static void sdhci_hw_reset(struct mmc_host *mmc)
 {
-	struct sdhci_host *host;
-	unsigned long flags;
+	struct sdhci_host *host = mmc_priv(mmc);
 
-	host = mmc_priv(mmc);
+	if (host->ops && host->ops->hw_reset)
+		host->ops->hw_reset(host);
+}
 
-	spin_lock_irqsave(&host->lock, flags);
+static int sdhci_get_ro(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	int ret;
 
+	sdhci_runtime_pm_get(host);
+	ret = sdhci_do_get_ro(host);
+	sdhci_runtime_pm_put(host);
+	return ret;
+}
+
+static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
+{
 	if (host->flags & SDHCI_DEVICE_DEAD)
 		goto out;
 
+	if (enable)
+		host->flags |= SDHCI_SDIO_IRQ_ENABLED;
+	else
+		host->flags &= ~SDHCI_SDIO_IRQ_ENABLED;
+
+	/* SDIO IRQ will be enabled as appropriate in runtime resume */
+	if (host->runtime_suspended)
+		goto out;
+
 	if (enable)
 		sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT);
 	else
 		sdhci_mask_irqs(host, SDHCI_INT_CARD_INT);
 out:
 	mmiowb();
+}
+
+static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	unsigned long flags;
 
+	spin_lock_irqsave(&host->lock, flags);
+	sdhci_enable_sdio_irq_nolock(host, enable);
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
-static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
-	struct mmc_ios *ios)
+static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
+						struct mmc_ios *ios)
 {
-	struct sdhci_host *host;
 	u8 pwr;
 	u16 clk, ctrl;
 	u32 present_state;
 
-	host = mmc_priv(mmc);
-
 	/*
 	 * Signal Voltage Switching is only applicable for Host Controllers
 	 * v3.00 and above.
@@ -1528,7 +1582,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
 		if (!(ctrl & SDHCI_CTRL_VDD_180))
 			return 0;
 		else {
-			printk(KERN_INFO DRIVER_NAME ": Switching to 3.3V "
+			pr_info(DRIVER_NAME ": Switching to 3.3V "
 				"signalling voltage failed\n");
 			return -EIO;
 		}
@@ -1587,7 +1641,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
 		pwr |= SDHCI_POWER_ON;
 		sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
 
-		printk(KERN_INFO DRIVER_NAME ": Switching to 1.8V signalling "
+		pr_info(DRIVER_NAME ": Switching to 1.8V signalling "
 			"voltage failed, retrying with S18R set to 0\n");
 		return -EAGAIN;
 	} else
@@ -1595,6 +1649,20 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
 		return 0;
 }
 
+static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
+	struct mmc_ios *ios)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	int err;
+
+	if (host->version < SDHCI_SPEC_300)
+		return 0;
+	sdhci_runtime_pm_get(host);
+	err = sdhci_do_start_signal_voltage_switch(host, ios);
+	sdhci_runtime_pm_put(host);
+	return err;
+}
+
 static int sdhci_execute_tuning(struct mmc_host *mmc)
 {
 	struct sdhci_host *host;
@@ -1606,6 +1674,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 
 	host = mmc_priv(mmc);
 
+	sdhci_runtime_pm_get(host);
 	disable_irq(host->irq);
 	spin_lock(&host->lock);
 
@@ -1623,6 +1692,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 	else {
 		spin_unlock(&host->lock);
 		enable_irq(host->irq);
+		sdhci_runtime_pm_put(host);
 		return 0;
 	}
 
@@ -1648,7 +1718,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 	timeout = 150;
 	do {
 		struct mmc_command cmd = {0};
-		struct mmc_request mrq = {0};
+		struct mmc_request mrq = {NULL};
 
 		if (!tuning_loop_counter && !timeout)
 			break;
@@ -1694,7 +1764,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 		spin_lock(&host->lock);
 
 		if (!host->tuning_done) {
-			printk(KERN_INFO DRIVER_NAME ": Timeout waiting for "
+			pr_info(DRIVER_NAME ": Timeout waiting for "
 				"Buffer Read Ready interrupt during tuning "
 				"procedure, falling back to fixed sampling "
 				"clock\n");
@@ -1724,7 +1794,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc)
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 	} else {
 		if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
-			printk(KERN_INFO DRIVER_NAME ": Tuning procedure"
+			pr_info(DRIVER_NAME ": Tuning procedure"
 				" failed, falling back to fixed sampling"
 				" clock\n");
 			err = -EIO;
@@ -1766,18 +1836,16 @@ out:
 	sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier);
 	spin_unlock(&host->lock);
 	enable_irq(host->irq);
+	sdhci_runtime_pm_put(host);
 
 	return err;
 }
 
-static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
+static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable)
 {
-	struct sdhci_host *host;
 	u16 ctrl;
 	unsigned long flags;
 
-	host = mmc_priv(mmc);
-
 	/* Host Controller v3.00 defines preset value registers */
 	if (host->version < SDHCI_SPEC_300)
 		return;
@@ -1793,18 +1861,30 @@ static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
 	if (enable && !(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
 		ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+		host->flags |= SDHCI_PV_ENABLED;
 	} else if (!enable && (ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
 		ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+		host->flags &= ~SDHCI_PV_ENABLED;
 	}
 
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
+static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+
+	sdhci_runtime_pm_get(host);
+	sdhci_do_enable_preset_value(host, enable);
+	sdhci_runtime_pm_put(host);
+}
+
 static const struct mmc_host_ops sdhci_ops = {
 	.request	= sdhci_request,
 	.set_ios	= sdhci_set_ios,
 	.get_ro		= sdhci_get_ro,
+	.hw_reset	= sdhci_hw_reset,
 	.enable_sdio_irq = sdhci_enable_sdio_irq,
 	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,
 	.execute_tuning			= sdhci_execute_tuning,
@@ -1826,19 +1906,19 @@ static void sdhci_tasklet_card(unsigned long param)
 
 	spin_lock_irqsave(&host->lock, flags);
 
-	if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
-		if (host->mrq) {
-			printk(KERN_ERR "%s: Card removed during transfer!\n",
-				mmc_hostname(host->mmc));
-			printk(KERN_ERR "%s: Resetting controller.\n",
-				mmc_hostname(host->mmc));
+	/* Check host->mrq first in case we are runtime suspended */
+	if (host->mrq &&
+	    !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
+		pr_err("%s: Card removed during transfer!\n",
+			mmc_hostname(host->mmc));
+		pr_err("%s: Resetting controller.\n",
+			mmc_hostname(host->mmc));
 
-			sdhci_reset(host, SDHCI_RESET_CMD);
-			sdhci_reset(host, SDHCI_RESET_DATA);
+		sdhci_reset(host, SDHCI_RESET_CMD);
+		sdhci_reset(host, SDHCI_RESET_DATA);
 
-			host->mrq->cmd->error = -ENOMEDIUM;
-			tasklet_schedule(&host->finish_tasklet);
-		}
+		host->mrq->cmd->error = -ENOMEDIUM;
+		tasklet_schedule(&host->finish_tasklet);
 	}
 
 	spin_unlock_irqrestore(&host->lock, flags);
@@ -1854,14 +1934,16 @@ static void sdhci_tasklet_finish(unsigned long param)
 
 	host = (struct sdhci_host*)param;
 
+	spin_lock_irqsave(&host->lock, flags);
+
         /*
          * If this tasklet gets rescheduled while running, it will
          * be run again afterwards but without any active request.
          */
-	if (!host->mrq)
+	if (!host->mrq) {
+		spin_unlock_irqrestore(&host->lock, flags);
 		return;
-
-	spin_lock_irqsave(&host->lock, flags);
+	}
 
 	del_timer(&host->timer);
 
@@ -1905,6 +1987,7 @@ static void sdhci_tasklet_finish(unsigned long param)
 	spin_unlock_irqrestore(&host->lock, flags);
 
 	mmc_request_done(host->mmc, mrq);
+	sdhci_runtime_pm_put(host);
 }
 
 static void sdhci_timeout_timer(unsigned long data)
@@ -1917,7 +2000,7 @@ static void sdhci_timeout_timer(unsigned long data)
 	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->mrq) {
-		printk(KERN_ERR "%s: Timeout waiting for hardware "
+		pr_err("%s: Timeout waiting for hardware "
 			"interrupt.\n", mmc_hostname(host->mmc));
 		sdhci_dumpregs(host);
 
@@ -1963,7 +2046,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
 	BUG_ON(intmask == 0);
 
 	if (!host->cmd) {
-		printk(KERN_ERR "%s: Got command interrupt 0x%08x even "
+		pr_err("%s: Got command interrupt 0x%08x even "
 			"though no command operation was in progress.\n",
 			mmc_hostname(host->mmc), (unsigned)intmask);
 		sdhci_dumpregs(host);
@@ -2063,7 +2146,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 			}
 		}
 
-		printk(KERN_ERR "%s: Got data interrupt 0x%08x even "
+		pr_err("%s: Got data interrupt 0x%08x even "
 			"though no data operation was in progress.\n",
 			mmc_hostname(host->mmc), (unsigned)intmask);
 		sdhci_dumpregs(host);
@@ -2080,7 +2163,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 			!= MMC_BUS_TEST_R)
 		host->data->error = -EILSEQ;
 	else if (intmask & SDHCI_INT_ADMA_ERROR) {
-		printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc));
+		pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
 		sdhci_show_adma_error(host);
 		host->data->error = -EIO;
 	}
@@ -2136,12 +2219,19 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 static irqreturn_t sdhci_irq(int irq, void *dev_id)
 {
 	irqreturn_t result;
-	struct sdhci_host* host = dev_id;
+	struct sdhci_host *host = dev_id;
 	u32 intmask;
 	int cardint = 0;
 
 	spin_lock(&host->lock);
 
+	if (host->runtime_suspended) {
+		spin_unlock(&host->lock);
+		pr_warning("%s: got irq while runtime suspended\n",
+		       mmc_hostname(host->mmc));
+		return IRQ_HANDLED;
+	}
+
 	intmask = sdhci_readl(host, SDHCI_INT_STATUS);
 
 	if (!intmask || intmask == 0xffffffff) {
@@ -2194,7 +2284,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 	intmask &= ~SDHCI_INT_ERROR;
 
 	if (intmask & SDHCI_INT_BUS_POWER) {
-		printk(KERN_ERR "%s: Card is consuming too much power!\n",
+		pr_err("%s: Card is consuming too much power!\n",
 			mmc_hostname(host->mmc));
 		sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS);
 	}
@@ -2207,7 +2297,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 	intmask &= ~SDHCI_INT_CARD_INT;
 
 	if (intmask) {
-		printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n",
+		pr_err("%s: Unexpected interrupt 0x%08x.\n",
 			mmc_hostname(host->mmc), intmask);
 		sdhci_dumpregs(host);
 
@@ -2275,7 +2365,6 @@ int sdhci_resume_host(struct sdhci_host *host)
 			return ret;
 	}
 
-
 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
 		if (host->ops->enable_dma)
 			host->ops->enable_dma(host);
@@ -2314,6 +2403,90 @@ EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
 
 #endif /* CONFIG_PM */
 
+#ifdef CONFIG_PM_RUNTIME
+
+static int sdhci_runtime_pm_get(struct sdhci_host *host)
+{
+	return pm_runtime_get_sync(host->mmc->parent);
+}
+
+static int sdhci_runtime_pm_put(struct sdhci_host *host)
+{
+	pm_runtime_mark_last_busy(host->mmc->parent);
+	return pm_runtime_put_autosuspend(host->mmc->parent);
+}
+
+int sdhci_runtime_suspend_host(struct sdhci_host *host)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	/* Disable tuning since we are suspending */
+	if (host->version >= SDHCI_SPEC_300 &&
+	    host->tuning_mode == SDHCI_TUNING_MODE_1) {
+		del_timer_sync(&host->tuning_timer);
+		host->flags &= ~SDHCI_NEEDS_RETUNING;
+	}
+
+	spin_lock_irqsave(&host->lock, flags);
+	sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	synchronize_irq(host->irq);
+
+	spin_lock_irqsave(&host->lock, flags);
+	host->runtime_suspended = true;
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	return ret;
+}
+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;
+
+	if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
+		if (host->ops->enable_dma)
+			host->ops->enable_dma(host);
+	}
+
+	sdhci_init(host, 0);
+
+	/* Force clock and power re-program */
+	host->pwr = 0;
+	host->clock = 0;
+	sdhci_do_set_ios(host, &host->mmc->ios);
+
+	sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
+	if (host_flags & SDHCI_PV_ENABLED)
+		sdhci_do_enable_preset_value(host, true);
+
+	/* Set the re-tuning expiration flag */
+	if ((host->version >= SDHCI_SPEC_300) && host->tuning_count &&
+	    (host->tuning_mode == SDHCI_TUNING_MODE_1))
+		host->flags |= SDHCI_NEEDS_RETUNING;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	host->runtime_suspended = false;
+
+	/* Enable SDIO IRQ */
+	if ((host->flags & SDHCI_SDIO_IRQ_ENABLED))
+		sdhci_enable_sdio_irq_nolock(host, true);
+
+	/* Enable Card Detection */
+	sdhci_enable_card_detection(host);
+
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(sdhci_runtime_resume_host);
+
+#endif
+
 /*****************************************************************************\
  *                                                                           *
  * Device allocation/registration                                            *
@@ -2356,6 +2529,8 @@ int sdhci_add_host(struct sdhci_host *host)
 
 	if (debug_quirks)
 		host->quirks = debug_quirks;
+	if (debug_quirks2)
+		host->quirks2 = debug_quirks2;
 
 	sdhci_reset(host, SDHCI_RESET_ALL);
 
@@ -2363,7 +2538,7 @@ int sdhci_add_host(struct sdhci_host *host)
 	host->version = (host->version & SDHCI_SPEC_VER_MASK)
 				>> SDHCI_SPEC_VER_SHIFT;
 	if (host->version > SDHCI_SPEC_300) {
-		printk(KERN_ERR "%s: Unknown controller version (%d). "
+		pr_err("%s: Unknown controller version (%d). "
 			"You may experience problems.\n", mmc_hostname(mmc),
 			host->version);
 	}
@@ -2400,7 +2575,7 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
 		if (host->ops->enable_dma) {
 			if (host->ops->enable_dma(host)) {
-				printk(KERN_WARNING "%s: No suitable DMA "
+				pr_warning("%s: No suitable DMA "
 					"available. Falling back to PIO.\n",
 					mmc_hostname(mmc));
 				host->flags &=
@@ -2420,7 +2595,7 @@ int sdhci_add_host(struct sdhci_host *host)
 		if (!host->adma_desc || !host->align_buffer) {
 			kfree(host->adma_desc);
 			kfree(host->align_buffer);
-			printk(KERN_WARNING "%s: Unable to allocate ADMA "
+			pr_warning("%s: Unable to allocate ADMA "
 				"buffers. Falling back to standard DMA.\n",
 				mmc_hostname(mmc));
 			host->flags &= ~SDHCI_USE_ADMA;
@@ -2448,8 +2623,7 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (host->max_clk == 0 || host->quirks &
 			SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) {
 		if (!host->ops->get_max_clock) {
-			printk(KERN_ERR
-			       "%s: Hardware doesn't specify base clock "
+			pr_err("%s: Hardware doesn't specify base clock "
 			       "frequency.\n", mmc_hostname(mmc));
 			return -ENODEV;
 		}
@@ -2495,8 +2669,7 @@ int sdhci_add_host(struct sdhci_host *host)
 			host->timeout_clk = host->ops->get_timeout_clock(host);
 		} else if (!(host->quirks &
 				SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
-			printk(KERN_ERR
-			       "%s: Hardware doesn't specify timeout clock "
+			pr_err("%s: Hardware doesn't specify timeout clock "
 			       "frequency.\n", mmc_hostname(mmc));
 			return -ENODEV;
 		}
@@ -2566,6 +2739,15 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (caps[1] & SDHCI_DRIVER_TYPE_D)
 		mmc->caps |= MMC_CAP_DRIVER_TYPE_D;
 
+	/*
+	 * If Power Off Notify capability is enabled by the host,
+	 * set notify to short power off notify timeout value.
+	 */
+	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;
+
 	/* Initial value for re-tuning timer count */
 	host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >>
 			      SDHCI_RETUNING_TIMER_COUNT_SHIFT;
@@ -2655,7 +2837,7 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->ocr_avail_mmc &= host->ocr_avail_mmc;
 
 	if (mmc->ocr_avail == 0) {
-		printk(KERN_ERR "%s: Hardware doesn't report any "
+		pr_err("%s: Hardware doesn't report any "
 			"support voltages.\n", mmc_hostname(mmc));
 		return -ENODEV;
 	}
@@ -2703,7 +2885,7 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >>
 				SDHCI_MAX_BLOCK_SHIFT;
 		if (mmc->max_blk_size >= 3) {
-			printk(KERN_WARNING "%s: Invalid maximum block size, "
+			pr_warning("%s: Invalid maximum block size, "
 				"assuming 512 bytes\n", mmc_hostname(mmc));
 			mmc->max_blk_size = 0;
 		}
@@ -2742,7 +2924,7 @@ int sdhci_add_host(struct sdhci_host *host)
 
 	host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
 	if (IS_ERR(host->vmmc)) {
-		printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+		pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
 		host->vmmc = NULL;
 	} else {
 		regulator_enable(host->vmmc);
@@ -2771,7 +2953,7 @@ int sdhci_add_host(struct sdhci_host *host)
 
 	mmc_add_host(mmc);
 
-	printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n",
+	pr_info("%s: SDHCI controller on %s [%s] using %s\n",
 		mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)),
 		(host->flags & SDHCI_USE_ADMA) ? "ADMA" :
 		(host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO");
@@ -2804,7 +2986,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 		host->flags |= SDHCI_DEVICE_DEAD;
 
 		if (host->mrq) {
-			printk(KERN_ERR "%s: Controller removed during "
+			pr_err("%s: Controller removed during "
 				" transfer!\n", mmc_hostname(host->mmc));
 
 			host->mrq->cmd->error = -ENOMEDIUM;
@@ -2863,9 +3045,9 @@ EXPORT_SYMBOL_GPL(sdhci_free_host);
 
 static int __init sdhci_drv_init(void)
 {
-	printk(KERN_INFO DRIVER_NAME
+	pr_info(DRIVER_NAME
 		": Secure Digital Host Controller Interface driver\n");
-	printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
+	pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
 
 	return 0;
 }
@@ -2878,9 +3060,11 @@ module_init(sdhci_drv_init);
 module_exit(sdhci_drv_exit);
 
 module_param(debug_quirks, uint, 0444);
+module_param(debug_quirks2, uint, 0444);
 
 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
 MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver");
 MODULE_LICENSE("GPL");
 
 MODULE_PARM_DESC(debug_quirks, "Force certain quirks.");
+MODULE_PARM_DESC(debug_quirks2, "Force certain other quirks.");

drivers/mmc/host/sdhci.h

@@ -273,7 +273,7 @@ struct sdhci_ops {
 	void	(*platform_reset_enter)(struct sdhci_host *host, u8 mask);
 	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);
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
@@ -379,4 +379,9 @@ extern int sdhci_resume_host(struct sdhci_host *host);
 extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
 #endif
 
+#ifdef CONFIG_PM_RUNTIME
+extern int sdhci_runtime_suspend_host(struct sdhci_host *host);
+extern int sdhci_runtime_resume_host(struct sdhci_host *host);
+#endif
+
 #endif /* __SDHCI_HW_H */

drivers/mmc/host/sdricoh_cs.c

@@ -26,6 +26,7 @@
 */
 #include <linux/delay.h>
 #include <linux/highmem.h>
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/scatterlist.h>

drivers/mmc/host/sh_mmcif.c

@@ -31,6 +31,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
+#include <linux/module.h>
 
 #define DRIVER_NAME	"sh_mmcif"
 #define DRIVER_VERSION	"2010-04-28"
@@ -165,6 +166,8 @@ struct sh_mmcif_host {
 	struct mmc_host *mmc;
 	struct mmc_data *data;
 	struct platform_device *pd;
+	struct sh_dmae_slave dma_slave_tx;
+	struct sh_dmae_slave dma_slave_rx;
 	struct clk *hclk;
 	unsigned int clk;
 	int bus_width;
@@ -323,25 +326,35 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
 static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
 				 struct sh_mmcif_plat_data *pdata)
 {
+	struct sh_dmae_slave *tx, *rx;
 	host->dma_active = false;
 
 	/* We can only either use DMA for both Tx and Rx or not use it at all */
 	if (pdata->dma) {
+		dev_warn(&host->pd->dev,
+			 "Update your platform to use embedded DMA slave IDs\n");
+		tx = &pdata->dma->chan_priv_tx;
+		rx = &pdata->dma->chan_priv_rx;
+	} else {
+		tx = &host->dma_slave_tx;
+		tx->slave_id = pdata->slave_id_tx;
+		rx = &host->dma_slave_rx;
+		rx->slave_id = pdata->slave_id_rx;
+	}
+	if (tx->slave_id > 0 && rx->slave_id > 0) {
 		dma_cap_mask_t mask;
 
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
 
-		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_tx);
+		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
 		dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
 			host->chan_tx);
 
 		if (!host->chan_tx)
 			return;
 
-		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_rx);
+		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
 		dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
 			host->chan_rx);
 

drivers/mmc/host/sh_mobile_sdhi.c

@@ -21,6 +21,7 @@
 #include <linux/kernel.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sh_mobile_sdhi.h>
@@ -96,7 +97,8 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 	struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
 	struct tmio_mmc_host *host;
 	char clk_name[8];
-	int i, irq, ret;
+	int irq, ret, i = 0;
+	bool multiplexed_isr = true;
 
 	priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
 	if (priv == NULL) {
@@ -153,27 +155,60 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto eprobe;
 
-	for (i = 0; i < 3; i++) {
-		irq = platform_get_irq(pdev, i);
-		if (irq < 0) {
-			if (i) {
-				continue;
-			} else {
-				ret = irq;
-				goto eirq;
-			}
-		}
-		ret = request_irq(irq, tmio_mmc_irq, 0,
+	/*
+	 * Allow one or more specific (named) ISRs or
+	 * one or more multiplexed (un-named) ISRs.
+	 */
+
+	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
+	if (irq >= 0) {
+		multiplexed_isr = false;
+		ret = request_irq(irq, tmio_mmc_card_detect_irq, 0,
+				  dev_name(&pdev->dev), host);
+		if (ret)
+			goto eirq_card_detect;
+	}
+
+	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
+	if (irq >= 0) {
+		multiplexed_isr = false;
+		ret = request_irq(irq, tmio_mmc_sdio_irq, 0,
+				  dev_name(&pdev->dev), host);
+		if (ret)
+			goto eirq_sdio;
+	}
+
+	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD);
+	if (irq >= 0) {
+		multiplexed_isr = false;
+		ret = request_irq(irq, tmio_mmc_sdcard_irq, 0,
 				  dev_name(&pdev->dev), host);
-		if (ret) {
-			while (i--) {
-				irq = platform_get_irq(pdev, i);
-				if (irq >= 0)
-					free_irq(irq, host);
-			}
-			goto eirq;
+		if (ret)
+			goto eirq_sdcard;
+	} else if (!multiplexed_isr) {
+		dev_err(&pdev->dev,
+			"Principal SD-card IRQ is missing among named interrupts\n");
+		ret = irq;
+		goto eirq_sdcard;
+	}
+
+	if (multiplexed_isr) {
+		while (1) {
+			irq = platform_get_irq(pdev, i);
+			if (irq < 0)
+				break;
+			i++;
+			ret = request_irq(irq, tmio_mmc_irq, 0,
+					  dev_name(&pdev->dev), host);
+			if (ret)
+				goto eirq_multiplexed;
 		}
+
+		/* There must be at least one IRQ source */
+		if (!i)
+			goto eirq_multiplexed;
 	}
+
 	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),
@@ -181,7 +216,20 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
 
 	return ret;
 
-eirq:
+eirq_multiplexed:
+	while (i--) {
+		irq = platform_get_irq(pdev, i);
+		free_irq(irq, host);
+	}
+eirq_sdcard:
+	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
+	if (irq >= 0)
+		free_irq(irq, host);
+eirq_sdio:
+	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
+	if (irq >= 0)
+		free_irq(irq, host);
+eirq_card_detect:
 	tmio_mmc_host_remove(host);
 eprobe:
 	clk_disable(priv->clk);
@@ -197,16 +245,17 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 	struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
 	struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
-	int i, irq;
+	int i = 0, irq;
 
 	p->pdata = NULL;
 
 	tmio_mmc_host_remove(host);
 
-	for (i = 0; i < 3; i++) {
-		irq = platform_get_irq(pdev, i);
-		if (irq >= 0)
-			free_irq(irq, host);
+	while (1) {
+		irq = platform_get_irq(pdev, i++);
+		if (irq < 0)
+			break;
+		free_irq(irq, host);
 	}
 
 	clk_disable(priv->clk);

drivers/mmc/host/tifm_sd.c

@@ -16,6 +16,7 @@
 #include <linux/mmc/host.h>
 #include <linux/highmem.h>
 #include <linux/scatterlist.h>
+#include <linux/module.h>
 #include <asm/io.h>
 
 #define DRIVER_NAME "tifm_sd"
@@ -631,7 +632,7 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	}
 
 	if (host->req) {
-		printk(KERN_ERR "%s : unfinished request detected\n",
+		pr_err("%s : unfinished request detected\n",
 		       dev_name(&sock->dev));
 		mrq->cmd->error = -ETIMEDOUT;
 		goto err_out;
@@ -671,7 +672,7 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 					    r_data->flags & MMC_DATA_WRITE
 					    ? PCI_DMA_TODEVICE
 					    : PCI_DMA_FROMDEVICE)) {
-				printk(KERN_ERR "%s : scatterlist map failed\n",
+				pr_err("%s : scatterlist map failed\n",
 				       dev_name(&sock->dev));
 				mrq->cmd->error = -ENOMEM;
 				goto err_out;
@@ -683,7 +684,7 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 						   ? PCI_DMA_TODEVICE
 						   : PCI_DMA_FROMDEVICE);
 			if (host->sg_len < 1) {
-				printk(KERN_ERR "%s : scatterlist map failed\n",
+				pr_err("%s : scatterlist map failed\n",
 				       dev_name(&sock->dev));
 				tifm_unmap_sg(sock, &host->bounce_buf, 1,
 					      r_data->flags & MMC_DATA_WRITE
@@ -747,7 +748,7 @@ static void tifm_sd_end_cmd(unsigned long data)
 	host->req = NULL;
 
 	if (!mrq) {
-		printk(KERN_ERR " %s : no request to complete?\n",
+		pr_err(" %s : no request to complete?\n",
 		       dev_name(&sock->dev));
 		spin_unlock_irqrestore(&sock->lock, flags);
 		return;
@@ -786,8 +787,7 @@ static void tifm_sd_abort(unsigned long data)
 {
 	struct tifm_sd *host = (struct tifm_sd*)data;
 
-	printk(KERN_ERR
-	       "%s : card failed to respond for a long period of time "
+	pr_err("%s : card failed to respond for a long period of time "
 	       "(%x, %x)\n",
 	       dev_name(&host->dev->dev), host->req->cmd->opcode, host->cmd_flags);
 
@@ -905,7 +905,7 @@ static int tifm_sd_initialize_host(struct tifm_sd *host)
 	}
 
 	if (rc) {
-		printk(KERN_ERR "%s : controller failed to reset\n",
+		pr_err("%s : controller failed to reset\n",
 		       dev_name(&sock->dev));
 		return -ENODEV;
 	}
@@ -931,8 +931,7 @@ static int tifm_sd_initialize_host(struct tifm_sd *host)
 	}
 
 	if (rc) {
-		printk(KERN_ERR
-		       "%s : card not ready - probe failed on initialization\n",
+		pr_err("%s : card not ready - probe failed on initialization\n",
 		       dev_name(&sock->dev));
 		return -ENODEV;
 	}
@@ -953,7 +952,7 @@ static int tifm_sd_probe(struct tifm_dev *sock)
 
 	if (!(TIFM_SOCK_STATE_OCCUPIED
 	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
-		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
+		pr_warning("%s : card gone, unexpectedly\n",
 		       dev_name(&sock->dev));
 		return rc;
 	}

drivers/mmc/host/tmio_mmc.c

@@ -88,8 +88,8 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
 	if (ret)
 		goto cell_disable;
 
-	ret = request_irq(irq, tmio_mmc_irq, IRQF_DISABLED |
-			  IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), host);
+	ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
+				dev_name(&pdev->dev), host);
 	if (ret)
 		goto host_remove;
 

drivers/mmc/host/tmio_mmc.h

@@ -79,6 +79,10 @@ struct tmio_mmc_host {
 	struct delayed_work	delayed_reset_work;
 	struct work_struct	done;
 
+	/* Cache IRQ mask */
+	u32			sdcard_irq_mask;
+	u32			sdio_irq_mask;
+
 	spinlock_t		lock;		/* protect host private data */
 	unsigned long		last_req_ts;
 	struct mutex		ios_lock;	/* protect set_ios() context */
@@ -93,6 +97,9 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
 void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
 void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
 irqreturn_t tmio_mmc_irq(int irq, void *devid);
+irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid);
+irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid);
+irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid);
 
 static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
 					 unsigned long *flags)

drivers/mmc/host/tmio_mmc_pio.c

@@ -48,14 +48,14 @@
 
 void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
 {
-	u32 mask = sd_ctrl_read32(host, CTL_IRQ_MASK) & ~(i & TMIO_MASK_IRQ);
-	sd_ctrl_write32(host, CTL_IRQ_MASK, mask);
+	host->sdcard_irq_mask &= ~(i & TMIO_MASK_IRQ);
+	sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
 }
 
 void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
 {
-	u32 mask = sd_ctrl_read32(host, CTL_IRQ_MASK) | (i & TMIO_MASK_IRQ);
-	sd_ctrl_write32(host, CTL_IRQ_MASK, mask);
+	host->sdcard_irq_mask |= (i & TMIO_MASK_IRQ);
+	sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
 }
 
 static void tmio_mmc_ack_mmc_irqs(struct tmio_mmc_host *host, u32 i)
@@ -92,7 +92,7 @@ static int tmio_mmc_next_sg(struct tmio_mmc_host *host)
 static void pr_debug_status(u32 status)
 {
 	int i = 0;
-	printk(KERN_DEBUG "status: %08x = ", status);
+	pr_debug("status: %08x = ", status);
 	STATUS_TO_TEXT(CARD_REMOVE, status, i);
 	STATUS_TO_TEXT(CARD_INSERT, status, i);
 	STATUS_TO_TEXT(SIGSTATE, status, i);
@@ -127,11 +127,13 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 
 	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);
-		sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK,
-			(TMIO_SDIO_MASK_ALL & ~TMIO_SDIO_STAT_IOIRQ));
+		sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
 	} else {
-		sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, TMIO_SDIO_MASK_ALL);
+		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;
 	}
@@ -543,45 +545,20 @@ out:
 	spin_unlock(&host->lock);
 }
 
-irqreturn_t tmio_mmc_irq(int irq, void *devid)
+static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host,
+				       int *ireg, int *status)
 {
-	struct tmio_mmc_host *host = devid;
-	struct mmc_host *mmc = host->mmc;
-	struct tmio_mmc_data *pdata = host->pdata;
-	unsigned int ireg, irq_mask, status;
-	unsigned int sdio_ireg, sdio_irq_mask, sdio_status;
-
-	pr_debug("MMC IRQ begin\n");
-
-	status = sd_ctrl_read32(host, CTL_STATUS);
-	irq_mask = sd_ctrl_read32(host, CTL_IRQ_MASK);
-	ireg = status & TMIO_MASK_IRQ & ~irq_mask;
-
-	sdio_ireg = 0;
-	if (!ireg && pdata->flags & TMIO_MMC_SDIO_IRQ) {
-		sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
-		sdio_irq_mask = sd_ctrl_read16(host, CTL_SDIO_IRQ_MASK);
-		sdio_ireg = sdio_status & TMIO_SDIO_MASK_ALL & ~sdio_irq_mask;
+	*status = sd_ctrl_read32(host, CTL_STATUS);
+	*ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask;
 
-		sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status & ~TMIO_SDIO_MASK_ALL);
-
-		if (sdio_ireg && !host->sdio_irq_enabled) {
-			pr_warning("tmio_mmc: Spurious SDIO IRQ, disabling! 0x%04x 0x%04x 0x%04x\n",
-				   sdio_status, sdio_irq_mask, sdio_ireg);
-			tmio_mmc_enable_sdio_irq(mmc, 0);
-			goto out;
-		}
-
-		if (mmc->caps & MMC_CAP_SDIO_IRQ &&
-			sdio_ireg & TMIO_SDIO_STAT_IOIRQ)
-			mmc_signal_sdio_irq(mmc);
-
-		if (sdio_ireg)
-			goto out;
-	}
+	pr_debug_status(*status);
+	pr_debug_status(*ireg);
+}
 
-	pr_debug_status(status);
-	pr_debug_status(ireg);
+static bool __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host,
+				      int ireg, int status)
+{
+	struct mmc_host *mmc = host->mmc;
 
 	/* Card insert / remove attempts */
 	if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) {
@@ -591,43 +568,102 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid)
 		     ((ireg & TMIO_STAT_CARD_INSERT) && !mmc->card)) &&
 		    !work_pending(&mmc->detect.work))
 			mmc_detect_change(host->mmc, msecs_to_jiffies(100));
-		goto out;
+		return true;
 	}
 
-	/* CRC and other errors */
-/*	if (ireg & TMIO_STAT_ERR_IRQ)
- *		handled |= tmio_error_irq(host, irq, stat);
- */
+	return false;
+}
+
+irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid)
+{
+	unsigned int ireg, status;
+	struct tmio_mmc_host *host = devid;
+
+	tmio_mmc_card_irq_status(host, &ireg, &status);
+	__tmio_mmc_card_detect_irq(host, ireg, status);
 
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(tmio_mmc_card_detect_irq);
+
+static bool __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host,
+				 int ireg, int status)
+{
 	/* Command completion */
 	if (ireg & (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT)) {
 		tmio_mmc_ack_mmc_irqs(host,
 			     TMIO_STAT_CMDRESPEND |
 			     TMIO_STAT_CMDTIMEOUT);
 		tmio_mmc_cmd_irq(host, status);
-		goto out;
+		return true;
 	}
 
 	/* Data transfer */
 	if (ireg & (TMIO_STAT_RXRDY | TMIO_STAT_TXRQ)) {
 		tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_RXRDY | TMIO_STAT_TXRQ);
 		tmio_mmc_pio_irq(host);
-		goto out;
+		return true;
 	}
 
 	/* Data transfer completion */
 	if (ireg & TMIO_STAT_DATAEND) {
 		tmio_mmc_ack_mmc_irqs(host, TMIO_STAT_DATAEND);
 		tmio_mmc_data_irq(host);
-		goto out;
+		return true;
 	}
 
-	pr_warning("tmio_mmc: Spurious irq, disabling! "
-		"0x%08x 0x%08x 0x%08x\n", status, irq_mask, ireg);
-	pr_debug_status(status);
-	tmio_mmc_disable_mmc_irqs(host, status & ~irq_mask);
+	return false;
+}
+
+irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid)
+{
+	unsigned int ireg, status;
+	struct tmio_mmc_host *host = devid;
+
+	tmio_mmc_card_irq_status(host, &ireg, &status);
+	__tmio_mmc_sdcard_irq(host, ireg, status);
+
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(tmio_mmc_sdcard_irq);
+
+irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
+{
+	struct tmio_mmc_host *host = devid;
+	struct mmc_host *mmc = host->mmc;
+	struct tmio_mmc_data *pdata = host->pdata;
+	unsigned int ireg, status;
+
+	if (!(pdata->flags & TMIO_MMC_SDIO_IRQ))
+		return IRQ_HANDLED;
+
+	status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
+	ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask;
+
+	sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL);
+
+	if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ)
+		mmc_signal_sdio_irq(mmc);
+
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(tmio_mmc_sdio_irq);
+
+irqreturn_t tmio_mmc_irq(int irq, void *devid)
+{
+	struct tmio_mmc_host *host = devid;
+	unsigned int ireg, status;
+
+	pr_debug("MMC IRQ begin\n");
+
+	tmio_mmc_card_irq_status(host, &ireg, &status);
+	if (__tmio_mmc_card_detect_irq(host, ireg, status))
+		return IRQ_HANDLED;
+	if (__tmio_mmc_sdcard_irq(host, ireg, status))
+		return IRQ_HANDLED;
+
+	tmio_mmc_sdio_irq(irq, devid);
 
-out:
 	return IRQ_HANDLED;
 }
 EXPORT_SYMBOL(tmio_mmc_irq);
@@ -882,6 +918,7 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
 	tmio_mmc_clk_stop(_host);
 	tmio_mmc_reset(_host);
 
+	_host->sdcard_irq_mask = sd_ctrl_read32(_host, CTL_IRQ_MASK);
 	tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
 	if (pdata->flags & TMIO_MMC_SDIO_IRQ)
 		tmio_mmc_enable_sdio_irq(mmc, 0);

drivers/mmc/host/via-sdmmc.c

@@ -9,6 +9,7 @@
  */
 
 #include <linux/pci.h>
+#include <linux/module.h>
 #include <linux/dma-mapping.h>
 #include <linux/highmem.h>
 #include <linux/delay.h>
@@ -1191,7 +1192,7 @@ static void __devexit via_sd_remove(struct pci_dev *pcidev)
 	mmiowb();
 
 	if (sdhost->mrq) {
-		printk(KERN_ERR "%s: Controller removed during "
+		pr_err("%s: Controller removed during "
 			"transfer\n", mmc_hostname(sdhost->mmc));
 
 		/* make sure all DMA is stopped */

drivers/mmc/host/wbsd.c

@@ -194,7 +194,7 @@ static void wbsd_reset(struct wbsd_host *host)
 {
 	u8 setup;
 
-	printk(KERN_ERR "%s: Resetting chip\n", mmc_hostname(host->mmc));
+	pr_err("%s: Resetting chip\n", mmc_hostname(host->mmc));
 
 	/*
 	 * Soft reset of chip (SD/MMC part).
@@ -721,7 +721,7 @@ static void wbsd_finish_data(struct wbsd_host *host, struct mmc_data *data)
 		 * Any leftover data?
 		 */
 		if (count) {
-			printk(KERN_ERR "%s: Incomplete DMA transfer. "
+			pr_err("%s: Incomplete DMA transfer. "
 				"%d bytes left.\n",
 				mmc_hostname(host->mmc), count);
 
@@ -803,7 +803,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
 		default:
 #ifdef CONFIG_MMC_DEBUG
-			printk(KERN_WARNING "%s: Data command %d is not "
+			pr_warning("%s: Data command %d is not "
 				"supported by this controller.\n",
 				mmc_hostname(host->mmc), cmd->opcode);
 #endif
@@ -1029,7 +1029,7 @@ static void wbsd_tasklet_card(unsigned long param)
 		host->flags &= ~WBSD_FCARD_PRESENT;
 
 		if (host->mrq) {
-			printk(KERN_ERR "%s: Card removed during transfer!\n",
+			pr_err("%s: Card removed during transfer!\n",
 				mmc_hostname(host->mmc));
 			wbsd_reset(host);
 
@@ -1429,7 +1429,7 @@ free:
 	free_dma(dma);
 
 err:
-	printk(KERN_WARNING DRIVER_NAME ": Unable to allocate DMA %d. "
+	pr_warning(DRIVER_NAME ": Unable to allocate DMA %d. "
 		"Falling back on FIFO.\n", dma);
 }
 
@@ -1664,7 +1664,7 @@ static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma,
 	ret = wbsd_scan(host);
 	if (ret) {
 		if (pnp && (ret == -ENODEV)) {
-			printk(KERN_WARNING DRIVER_NAME
+			pr_warning(DRIVER_NAME
 				": Unable to confirm device presence. You may "
 				"experience lock-ups.\n");
 		} else {
@@ -1688,7 +1688,7 @@ static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma,
 	 */
 	if (pnp) {
 		if ((host->config != 0) && !wbsd_chip_validate(host)) {
-			printk(KERN_WARNING DRIVER_NAME
+			pr_warning(DRIVER_NAME
 				": PnP active but chip not configured! "
 				"You probably have a buggy BIOS. "
 				"Configuring chip manually.\n");
@@ -1720,7 +1720,7 @@ static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma,
 
 	mmc_add_host(mmc);
 
-	printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc));
+	pr_info("%s: W83L51xD", mmc_hostname(mmc));
 	if (host->chip_id != 0)
 		printk(" id %x", (int)host->chip_id);
 	printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);
@@ -1909,7 +1909,7 @@ static int wbsd_pnp_resume(struct pnp_dev *pnp_dev)
 	 */
 	if (host->config != 0) {
 		if (!wbsd_chip_validate(host)) {
-			printk(KERN_WARNING DRIVER_NAME
+			pr_warning(DRIVER_NAME
 				": PnP active but chip not configured! "
 				"You probably have a buggy BIOS. "
 				"Configuring chip manually.\n");
@@ -1973,9 +1973,9 @@ static int __init wbsd_drv_init(void)
 {
 	int result;
 
-	printk(KERN_INFO DRIVER_NAME
+	pr_info(DRIVER_NAME
 		": Winbond W83L51xD SD/MMC card interface driver\n");
-	printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
+	pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
 
 #ifdef CONFIG_PNP
 

include/linux/atmel-mci.h

@@ -1,7 +1,7 @@
 #ifndef __LINUX_ATMEL_MCI_H
 #define __LINUX_ATMEL_MCI_H
 
-#define ATMEL_MCI_MAX_NR_SLOTS	2
+#define ATMCI_MAX_NR_SLOTS	2
 
 /**
  * struct mci_slot_pdata - board-specific per-slot configuration
@@ -33,7 +33,7 @@ struct mci_slot_pdata {
  */
 struct mci_platform_data {
 	struct mci_dma_data	*dma_slave;
-	struct mci_slot_pdata	slot[ATMEL_MCI_MAX_NR_SLOTS];
+	struct mci_slot_pdata	slot[ATMCI_MAX_NR_SLOTS];
 };
 
 #endif /* __LINUX_ATMEL_MCI_H */

include/linux/atmel_pdc.h

@@ -33,4 +33,6 @@
 
 #define ATMEL_PDC_PTSR		0x124	/* Transfer Status Register */
 
+#define ATMEL_PDC_SCND_BUF_OFF	0x10	/* Offset between first and second buffer registers */
+
 #endif

include/linux/mmc/card.h

@@ -50,8 +50,12 @@ struct mmc_ext_csd {
 	u8			rel_sectors;
 	u8			rel_param;
 	u8			part_config;
+	u8			cache_ctrl;
+	u8			rst_n_function;
 	unsigned int		part_time;		/* Units: ms */
 	unsigned int		sa_timeout;		/* Units: 100ns */
+	unsigned int		generic_cmd6_time;	/* Units: 10ms */
+	unsigned int            power_off_longtime;     /* Units: ms */
 	unsigned int		hs_max_dtr;
 	unsigned int		sectors;
 	unsigned int		card_type;
@@ -63,11 +67,15 @@ struct mmc_ext_csd {
 	bool			enhanced_area_en;	/* enable bit */
 	unsigned long long	enhanced_area_offset;	/* Units: Byte */
 	unsigned int		enhanced_area_size;	/* Units: KB */
-	unsigned int		boot_size;		/* in bytes */
+	unsigned int		cache_size;		/* Units: KB */
+	bool			hpi_en;			/* HPI enablebit */
+	bool			hpi;			/* HPI support bit */
+	unsigned int		hpi_cmd;		/* cmd used as HPI */
 	u8			raw_partition_support;	/* 160 */
 	u8			raw_erased_mem_count;	/* 181 */
 	u8			raw_ext_csd_structure;	/* 194 */
 	u8			raw_card_type;		/* 196 */
+	u8			out_of_int_time;	/* 198 */
 	u8			raw_s_a_timeout;		/* 217 */
 	u8			raw_hc_erase_gap_size;	/* 221 */
 	u8			raw_erase_timeout_mult;	/* 223 */
@@ -77,6 +85,9 @@ struct mmc_ext_csd {
 	u8			raw_sec_feature_support;/* 231 */
 	u8			raw_trim_mult;		/* 232 */
 	u8			raw_sectors[4];		/* 212 - 4 bytes */
+
+	unsigned int            feature_support;
+#define MMC_DISCARD_FEATURE	BIT(0)                  /* CMD38 feature */
 };
 
 struct sd_scr {
@@ -157,6 +168,24 @@ struct sdio_func_tuple;
 
 #define SDIO_MAX_FUNCS		7
 
+/* The number of MMC physical partitions.  These consist of:
+ * boot partitions (2), general purpose partitions (4) in MMC v4.4.
+ */
+#define MMC_NUM_BOOT_PARTITION	2
+#define MMC_NUM_GP_PARTITION	4
+#define MMC_NUM_PHY_PARTITION	6
+#define MAX_MMC_PART_NAME_LEN	20
+
+/*
+ * MMC Physical partitions
+ */
+struct mmc_part {
+	unsigned int	size;	/* partition size (in bytes) */
+	unsigned int	part_cfg;	/* partition type */
+	char	name[MAX_MMC_PART_NAME_LEN];
+	bool	force_ro;	/* to make boot parts RO by default */
+};
+
 /*
  * MMC device
  */
@@ -188,6 +217,13 @@ struct mmc_card {
 #define MMC_QUIRK_DISABLE_CD	(1<<5)		/* disconnect CD/DAT[3] resistor */
 #define MMC_QUIRK_INAND_CMD38	(1<<6)		/* iNAND devices have broken CMD38 */
 #define MMC_QUIRK_BLK_NO_CMD23	(1<<7)		/* Avoid CMD23 for regular multiblock */
+#define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8)	/* Avoid sending 512 bytes in */
+						/* byte mode */
+	unsigned int    poweroff_notify_state;	/* eMMC4.5 notify feature */
+#define MMC_NO_POWER_NOTIFICATION	0
+#define MMC_POWERED_ON			1
+#define MMC_POWEROFF_SHORT		2
+#define MMC_POWEROFF_LONG		3
 
 	unsigned int		erase_size;	/* erase size in sectors */
  	unsigned int		erase_shift;	/* if erase unit is power 2 */
@@ -216,8 +252,23 @@ struct mmc_card {
 	unsigned int		sd_bus_speed;	/* Bus Speed Mode set for the card */
 
 	struct dentry		*debugfs_root;
+	struct mmc_part	part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
+	unsigned int    nr_parts;
 };
 
+/*
+ * This function fill contents in mmc_part.
+ */
+static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
+			unsigned int part_cfg, char *name, int idx, bool ro)
+{
+	card->part[card->nr_parts].size = size;
+	card->part[card->nr_parts].part_cfg = part_cfg;
+	sprintf(card->part[card->nr_parts].name, name, idx);
+	card->part[card->nr_parts].force_ro = ro;
+	card->nr_parts++;
+}
+
 /*
  *  The world is not perfect and supplies us with broken mmc/sdio devices.
  *  For at least some of these bugs we need a work-around.
@@ -377,6 +428,11 @@ static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
 	return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
 }
 
+static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
+{
+	return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
+}
+
 #define mmc_card_name(c)	((c)->cid.prod_name)
 #define mmc_card_id(c)		(dev_name(&(c)->dev))
 

include/linux/mmc/core.h

@@ -136,6 +136,7 @@ struct mmc_async_req;
 
 extern struct mmc_async_req *mmc_start_req(struct mmc_host *,
 					   struct mmc_async_req *, int *);
+extern int mmc_interrupt_hpi(struct mmc_card *);
 extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
 extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
 extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *);
@@ -146,6 +147,7 @@ extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int);
 #define MMC_ERASE_ARG		0x00000000
 #define MMC_SECURE_ERASE_ARG	0x80000000
 #define MMC_TRIM_ARG		0x00000001
+#define MMC_DISCARD_ARG		0x00000003
 #define MMC_SECURE_TRIM1_ARG	0x80000001
 #define MMC_SECURE_TRIM2_ARG	0x80008000
 
@@ -156,12 +158,17 @@ extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
 		     unsigned int arg);
 extern int mmc_can_erase(struct mmc_card *card);
 extern int mmc_can_trim(struct mmc_card *card);
+extern int mmc_can_discard(struct mmc_card *card);
+extern int mmc_can_sanitize(struct mmc_card *card);
 extern int mmc_can_secure_erase_trim(struct mmc_card *card);
 extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
 				   unsigned int nr);
 extern unsigned int mmc_calc_max_discard(struct mmc_card *card);
 
 extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
+extern int mmc_hw_reset(struct mmc_host *host);
+extern int mmc_hw_reset_check(struct mmc_host *host);
+extern int mmc_can_reset(struct mmc_card *card);
 
 extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *);
 extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int);
@@ -171,6 +178,8 @@ extern void mmc_release_host(struct mmc_host *host);
 extern void mmc_do_release_host(struct mmc_host *host);
 extern int mmc_try_claim_host(struct mmc_host *host);
 
+extern int mmc_flush_cache(struct mmc_card *);
+
 /**
  *	mmc_claim_host - exclusively claim a host
  *	@host: mmc host to claim

include/linux/mmc/dw_mmc.h

@@ -72,6 +72,8 @@ struct mmc_data;
  *	rate and timeout calculations.
  * @current_speed: Configured rate of the controller.
  * @num_slots: Number of slots available.
+ * @verid: Denote Version ID.
+ * @data_offset: Set the offset of DATA register according to VERID.
  * @pdev: Platform device associated with the MMC controller.
  * @pdata: Platform data associated with the MMC controller.
  * @slot: Slots sharing this MMC controller.
@@ -147,6 +149,8 @@ struct dw_mci {
 	u32			current_speed;
 	u32			num_slots;
 	u32			fifoth_val;
+	u16			verid;
+	u16			data_offset;
 	struct platform_device	*pdev;
 	struct dw_mci_board	*pdata;
 	struct dw_mci_slot	*slot[MAX_MCI_SLOTS];

include/linux/mmc/host.h

@@ -12,6 +12,7 @@
 
 #include <linux/leds.h>
 #include <linux/sched.h>
+#include <linux/fault-inject.h>
 
 #include <linux/mmc/core.h>
 #include <linux/mmc/pm.h>
@@ -108,6 +109,9 @@ struct mmc_host_ops {
 	 * It is optional for the host to implement pre_req and post_req in
 	 * order to support double buffering of requests (prepare one
 	 * request while another request is active).
+	 * pre_req() must always be followed by a post_req().
+	 * To undo a call made to pre_req(), call post_req() with
+	 * a nonzero err condition.
 	 */
 	void	(*post_req)(struct mmc_host *host, struct mmc_request *req,
 			    int err);
@@ -147,6 +151,7 @@ struct mmc_host_ops {
 	int	(*execute_tuning)(struct mmc_host *host);
 	void	(*enable_preset_value)(struct mmc_host *host, bool enable);
 	int	(*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv);
+	void	(*hw_reset)(struct mmc_host *host);
 };
 
 struct mmc_card;
@@ -229,8 +234,20 @@ struct mmc_host {
 #define MMC_CAP_MAX_CURRENT_600	(1 << 28)	/* Host max current limit is 600mA */
 #define MMC_CAP_MAX_CURRENT_800	(1 << 29)	/* Host max current limit is 800mA */
 #define MMC_CAP_CMD23		(1 << 30)	/* CMD23 supported. */
+#define MMC_CAP_HW_RESET	(1 << 31)	/* Hardware reset */
+
+	unsigned int		caps2;		/* More host capabilities */
+
+#define MMC_CAP2_BOOTPART_NOACC	(1 << 0)	/* Boot partition no access */
+#define MMC_CAP2_CACHE_CTRL	(1 << 1)	/* Allow cache control */
+#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2)	/* Notify poweroff supported */
+#define MMC_CAP2_NO_MULTI_READ	(1 << 3)	/* Multiblock reads don't work */
 
 	mmc_pm_flag_t		pm_caps;	/* supported pm features */
+	unsigned int        power_notify_type;
+#define MMC_HOST_PW_NOTIFY_NONE		0
+#define MMC_HOST_PW_NOTIFY_SHORT	1
+#define MMC_HOST_PW_NOTIFY_LONG		2
 
 #ifdef CONFIG_MMC_CLKGATE
 	int			clk_requests;	/* internal reference counter */
@@ -302,6 +319,10 @@ struct mmc_host {
 
 	struct mmc_async_req	*areq;		/* active async req */
 
+#ifdef CONFIG_FAIL_MMC_REQUEST
+	struct fault_attr	fail_mmc_request;
+#endif
+
 	unsigned long		private[0] ____cacheline_aligned;
 };
 
@@ -330,6 +351,8 @@ extern int mmc_power_restore_host(struct mmc_host *host);
 extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
 extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
 
+extern int mmc_cache_ctrl(struct mmc_host *, u8);
+
 static inline void mmc_signal_sdio_irq(struct mmc_host *host)
 {
 	host->ops->enable_sdio_irq(host, 0);
@@ -394,4 +417,10 @@ static inline int mmc_host_cmd23(struct mmc_host *host)
 {
 	return host->caps & MMC_CAP_CMD23;
 }
+
+static inline int mmc_boot_partition_access(struct mmc_host *host)
+{
+	return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
+}
+
 #endif /* LINUX_MMC_HOST_H */

include/linux/mmc/mmc.h

@@ -270,18 +270,31 @@ struct _mmc_csd {
  * EXT_CSD fields
  */
 
+#define EXT_CSD_FLUSH_CACHE		32      /* W */
+#define EXT_CSD_CACHE_CTRL		33      /* R/W */
+#define EXT_CSD_POWER_OFF_NOTIFICATION	34	/* R/W */
+#define EXT_CSD_GP_SIZE_MULT		143	/* R/W */
 #define EXT_CSD_PARTITION_ATTRIBUTE	156	/* R/W */
 #define EXT_CSD_PARTITION_SUPPORT	160	/* RO */
+#define EXT_CSD_HPI_MGMT		161	/* R/W */
+#define EXT_CSD_RST_N_FUNCTION		162	/* R/W */
+#define EXT_CSD_SANITIZE_START		165     /* W */
 #define EXT_CSD_WR_REL_PARAM		166	/* RO */
 #define EXT_CSD_ERASE_GROUP_DEF		175	/* R/W */
 #define EXT_CSD_PART_CONFIG		179	/* R/W */
 #define EXT_CSD_ERASED_MEM_CONT		181	/* RO */
 #define EXT_CSD_BUS_WIDTH		183	/* R/W */
 #define EXT_CSD_HS_TIMING		185	/* R/W */
+#define EXT_CSD_POWER_CLASS		187	/* R/W */
 #define EXT_CSD_REV			192	/* RO */
 #define EXT_CSD_STRUCTURE		194	/* RO */
 #define EXT_CSD_CARD_TYPE		196	/* RO */
+#define EXT_CSD_OUT_OF_INTERRUPT_TIME	198	/* RO */
 #define EXT_CSD_PART_SWITCH_TIME        199     /* RO */
+#define EXT_CSD_PWR_CL_52_195		200	/* RO */
+#define EXT_CSD_PWR_CL_26_195		201	/* RO */
+#define EXT_CSD_PWR_CL_52_360		202	/* RO */
+#define EXT_CSD_PWR_CL_26_360		203	/* RO */
 #define EXT_CSD_SEC_CNT			212	/* RO, 4 bytes */
 #define EXT_CSD_S_A_TIMEOUT		217	/* RO */
 #define EXT_CSD_REL_WR_SEC_C		222	/* RO */
@@ -293,6 +306,14 @@ struct _mmc_csd {
 #define EXT_CSD_SEC_ERASE_MULT		230	/* RO */
 #define EXT_CSD_SEC_FEATURE_SUPPORT	231	/* RO */
 #define EXT_CSD_TRIM_MULT		232	/* RO */
+#define EXT_CSD_PWR_CL_200_195		236	/* RO */
+#define EXT_CSD_PWR_CL_200_360		237	/* RO */
+#define EXT_CSD_PWR_CL_DDR_52_195	238	/* RO */
+#define EXT_CSD_PWR_CL_DDR_52_360	239	/* RO */
+#define EXT_CSD_POWER_OFF_LONG_TIME	247	/* RO */
+#define EXT_CSD_GENERIC_CMD6_TIME	248	/* RO */
+#define EXT_CSD_CACHE_SIZE		249	/* RO, 4 bytes */
+#define EXT_CSD_HPI_FEATURES		503	/* RO */
 
 /*
  * EXT_CSD field definitions
@@ -302,7 +323,9 @@ struct _mmc_csd {
 
 #define EXT_CSD_PART_CONFIG_ACC_MASK	(0x7)
 #define EXT_CSD_PART_CONFIG_ACC_BOOT0	(0x1)
-#define EXT_CSD_PART_CONFIG_ACC_BOOT1	(0x2)
+#define EXT_CSD_PART_CONFIG_ACC_GP0	(0x4)
+
+#define EXT_CSD_PART_SUPPORT_PART_EN	(0x1)
 
 #define EXT_CSD_CMD_SET_NORMAL		(1<<0)
 #define EXT_CSD_CMD_SET_SECURE		(1<<1)
@@ -327,7 +350,20 @@ struct _mmc_csd {
 #define EXT_CSD_SEC_ER_EN	BIT(0)
 #define EXT_CSD_SEC_BD_BLK_EN	BIT(2)
 #define EXT_CSD_SEC_GB_CL_EN	BIT(4)
+#define EXT_CSD_SEC_SANITIZE	BIT(6)  /* v4.5 only */
+
+#define EXT_CSD_RST_N_EN_MASK	0x3
+#define EXT_CSD_RST_N_ENABLED	1	/* RST_n is enabled on card */
+
+#define EXT_CSD_NO_POWER_NOTIFICATION	0
+#define EXT_CSD_POWER_ON		1
+#define EXT_CSD_POWER_OFF_SHORT		2
+#define EXT_CSD_POWER_OFF_LONG		3
 
+#define EXT_CSD_PWR_CL_8BIT_MASK	0xF0	/* 8 bit PWR CLS */
+#define EXT_CSD_PWR_CL_4BIT_MASK	0x0F	/* 8 bit PWR CLS */
+#define EXT_CSD_PWR_CL_8BIT_SHIFT	4
+#define EXT_CSD_PWR_CL_4BIT_SHIFT	0
 /*
  * MMC_SWITCH access modes
  */

include/linux/mmc/sdhci.h

@@ -88,6 +88,10 @@ struct sdhci_host {
 /* The read-only detection via SDHCI_PRESENT_STATE register is unstable */
 #define SDHCI_QUIRK_UNSTABLE_RO_DETECT			(1<<31)
 
+	unsigned int quirks2;	/* More deviations from spec. */
+
+#define SDHCI_QUIRK2_OWN_CARD_DETECTION			(1<<0)
+
 	int irq;		/* Device IRQ */
 	void __iomem *ioaddr;	/* Mapped address */
 
@@ -115,6 +119,8 @@ struct sdhci_host {
 #define SDHCI_NEEDS_RETUNING	(1<<5)	/* Host needs retuning */
 #define SDHCI_AUTO_CMD12	(1<<6)	/* Auto CMD12 support */
 #define SDHCI_AUTO_CMD23	(1<<7)	/* Auto CMD23 support */
+#define SDHCI_PV_ENABLED	(1<<8)	/* Preset value enabled */
+#define SDHCI_SDIO_IRQ_ENABLED	(1<<9)	/* SDIO irq enabled */
 
 	unsigned int version;	/* SDHCI spec. version */
 
@@ -125,6 +131,8 @@ struct sdhci_host {
 	unsigned int clock;	/* Current clock (MHz) */
 	u8 pwr;			/* Current voltage */
 
+	bool runtime_suspended;	/* Host is runtime suspended */
+
 	struct mmc_request *mrq;	/* Current request */
 	struct mmc_command *cmd;	/* Current command */
 	struct mmc_data *data;	/* Current data request */

include/linux/mmc/sdio.h

@@ -72,11 +72,13 @@
 #define  SDIO_CCCR_REV_1_00	0	/* CCCR/FBR Version 1.00 */
 #define  SDIO_CCCR_REV_1_10	1	/* CCCR/FBR Version 1.10 */
 #define  SDIO_CCCR_REV_1_20	2	/* CCCR/FBR Version 1.20 */
+#define  SDIO_CCCR_REV_3_00	3	/* CCCR/FBR Version 3.00 */
 
 #define  SDIO_SDIO_REV_1_00	0	/* SDIO Spec Version 1.00 */
 #define  SDIO_SDIO_REV_1_10	1	/* SDIO Spec Version 1.10 */
 #define  SDIO_SDIO_REV_1_20	2	/* SDIO Spec Version 1.20 */
 #define  SDIO_SDIO_REV_2_00	3	/* SDIO Spec Version 2.00 */
+#define  SDIO_SDIO_REV_3_00	4	/* SDIO Spec Version 3.00 */
 
 #define SDIO_CCCR_SD		0x01
 

include/linux/mmc/sh_mmcif.h

@@ -41,7 +41,9 @@ struct sh_mmcif_plat_data {
 	void (*set_pwr)(struct platform_device *pdev, int state);
 	void (*down_pwr)(struct platform_device *pdev);
 	int (*get_cd)(struct platform_device *pdef);
-	struct sh_mmcif_dma	*dma;
+	struct sh_mmcif_dma	*dma;		/* Deprecated. Instead */
+	unsigned int		slave_id_tx;	/* use embedded slave_id_[tr]x */
+	unsigned int		slave_id_rx;
 	u8			sup_pclk;	/* 1 :SH7757, 0: SH7724/SH7372 */
 	unsigned long		caps;
 	u32			ocr;

include/linux/mmc/sh_mobile_sdhi.h

@@ -6,6 +6,10 @@
 struct platform_device;
 struct tmio_mmc_data;
 
+#define SH_MOBILE_SDHI_IRQ_CARD_DETECT	"card_detect"
+#define SH_MOBILE_SDHI_IRQ_SDCARD	"sdcard"
+#define SH_MOBILE_SDHI_IRQ_SDIO		"sdio"
+
 struct sh_mobile_sdhi_info {
 	int dma_slave_tx;
 	int dma_slave_rx;

lib/Kconfig.debug

@@ -1070,6 +1070,17 @@ config FAIL_IO_TIMEOUT
 	  Only works with drivers that use the generic timeout handling,
 	  for others it wont do anything.
 
+config FAIL_MMC_REQUEST
+	bool "Fault-injection capability for MMC IO"
+	select DEBUG_FS
+	depends on FAULT_INJECTION && MMC
+	help
+	  Provide fault-injection capability for MMC IO.
+	  This will make the mmc core return data errors. This is
+	  useful to test the error handling in the mmc block device
+	  and to test how the mmc host driver handles retries from
+	  the block device.
+
 config FAULT_INJECTION_DEBUG_FS
 	bool "Debugfs entries for fault-injection capabilities"
 	depends on FAULT_INJECTION && SYSFS && DEBUG_FS

lib/fault-inject.c

@@ -14,7 +14,7 @@
  * setup_fault_attr() is a helper function for various __setup handlers, so it
  * returns 0 on error, because that is what __setup handlers do.
  */
-int __init setup_fault_attr(struct fault_attr *attr, char *str)
+int setup_fault_attr(struct fault_attr *attr, char *str)
 {
 	unsigned long probability;
 	unsigned long interval;
@@ -36,6 +36,7 @@ int __init setup_fault_attr(struct fault_attr *attr, char *str)
 
 	return 1;
 }
+EXPORT_SYMBOL_GPL(setup_fault_attr);
 
 static void fail_dump(struct fault_attr *attr)
 {
@@ -130,6 +131,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
 
 	return true;
 }
+EXPORT_SYMBOL_GPL(should_fail);
 
 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
 
@@ -243,5 +245,6 @@ fail:
 
 	return ERR_PTR(-ENOMEM);
 }
+EXPORT_SYMBOL_GPL(fault_create_debugfs_attr);
 
 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */