Merge branch 'master' of git://git.denx.de/u-boot-mmc

8 files changed, 311 insertions, 192 deletions

diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index bedf833f70..06280d1fa6 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -34,6 +34,8 @@ COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
 COBJS-$(CONFIG_ZYNQ_SDHCI) += zynq_sdhci.o
 ifdef CONFIG_SPL_BUILD
 COBJS-$(CONFIG_SPL_MMC_BOOT) += fsl_esdhc_spl.o
+else
+COBJS-$(CONFIG_GENERIC_MMC) += mmc_write.o
 endif
 
 COBJS	:= $(COBJS-y)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index a82ee17a25..9a803a02d4 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -41,12 +41,11 @@ static void dwmci_set_idma_desc(struct dwmci_idmac *idmac,
 }
 
 static void dwmci_prepare_data(struct dwmci_host *host,
-		struct mmc_data *data)
+		struct mmc_data *data, struct dwmci_idmac *cur_idmac)
 {
 	unsigned long ctrl;
 	unsigned int i = 0, flags, cnt, blk_cnt;
 	ulong data_start, data_end, start_addr;
-	ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac, data->blocks);
 
 
 	blk_cnt = data->blocks;
@@ -73,7 +72,7 @@ static void dwmci_prepare_data(struct dwmci_host *host,
 		dwmci_set_idma_desc(cur_idmac, flags, cnt,
 				start_addr + (i * PAGE_SIZE));
 
-		if(blk_cnt < 8)
+		if (blk_cnt <= 8)
 			break;
 		blk_cnt -= 8;
 		cur_idmac++;
@@ -111,6 +110,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 		struct mmc_data *data)
 {
 	struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
+	ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac,
+				 data ? DIV_ROUND_UP(data->blocks, 8) : 0);
 	int flags = 0, i;
 	unsigned int timeout = 100000;
 	u32 retry = 10000;
@@ -127,7 +128,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 	dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
 
 	if (data)
-		dwmci_prepare_data(host, data);
+		dwmci_prepare_data(host, data, cur_idmac);
 
 	dwmci_writel(host, DWMCI_CMDARG, cmd->cmdarg);
 
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 55026759ed..84dae4d8bd 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -15,6 +15,7 @@
 #include <malloc.h>
 #include <linux/list.h>
 #include <div64.h>
+#include "mmc_private.h"
 
 /* Set block count limit because of 16 bit register limit on some hardware*/
 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
@@ -52,14 +53,10 @@ int __board_mmc_getcd(struct mmc *mmc) {
 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
 	alias("__board_mmc_getcd")));
 
-static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
-			struct mmc_data *data)
+int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
 {
-	struct mmc_data backup;
 	int ret;
 
-	memset(&backup, 0, sizeof(backup));
-
 #ifdef CONFIG_MMC_TRACE
 	int i;
 	u8 *ptr;
@@ -114,7 +111,7 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 	return ret;
 }
 
-static int mmc_send_status(struct mmc *mmc, int timeout)
+int mmc_send_status(struct mmc *mmc, int timeout)
 {
 	struct mmc_cmd cmd;
 	int err, retries = 5;
@@ -135,8 +132,10 @@ static int mmc_send_status(struct mmc *mmc, int timeout)
 			     MMC_STATE_PRG)
 				break;
 			else if (cmd.response[0] & MMC_STATUS_MASK) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 				printf("Status Error: 0x%08X\n",
 					cmd.response[0]);
+#endif
 				return COMM_ERR;
 			}
 		} else if (--retries < 0)
@@ -151,14 +150,16 @@ static int mmc_send_status(struct mmc *mmc, int timeout)
 	printf("CURR STATE:%d\n", status);
 #endif
 	if (timeout <= 0) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 		printf("Timeout waiting card ready\n");
+#endif
 		return TIMEOUT;
 	}
 
 	return 0;
 }
 
-static int mmc_set_blocklen(struct mmc *mmc, int len)
+int mmc_set_blocklen(struct mmc *mmc, int len)
 {
 	struct mmc_cmd cmd;
 
@@ -181,179 +182,13 @@ struct mmc *find_mmc_device(int dev_num)
 			return m;
 	}
 
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 	printf("MMC Device %d not found\n", dev_num);
+#endif
 
 	return NULL;
 }
 
-static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
-{
-	struct mmc_cmd cmd;
-	ulong end;
-	int err, start_cmd, end_cmd;
-
-	if (mmc->high_capacity)
-		end = start + blkcnt - 1;
-	else {
-		end = (start + blkcnt - 1) * mmc->write_bl_len;
-		start *= mmc->write_bl_len;
-	}
-
-	if (IS_SD(mmc)) {
-		start_cmd = SD_CMD_ERASE_WR_BLK_START;
-		end_cmd = SD_CMD_ERASE_WR_BLK_END;
-	} else {
-		start_cmd = MMC_CMD_ERASE_GROUP_START;
-		end_cmd = MMC_CMD_ERASE_GROUP_END;
-	}
-
-	cmd.cmdidx = start_cmd;
-	cmd.cmdarg = start;
-	cmd.resp_type = MMC_RSP_R1;
-
-	err = mmc_send_cmd(mmc, &cmd, NULL);
-	if (err)
-		goto err_out;
-
-	cmd.cmdidx = end_cmd;
-	cmd.cmdarg = end;
-
-	err = mmc_send_cmd(mmc, &cmd, NULL);
-	if (err)
-		goto err_out;
-
-	cmd.cmdidx = MMC_CMD_ERASE;
-	cmd.cmdarg = SECURE_ERASE;
-	cmd.resp_type = MMC_RSP_R1b;
-
-	err = mmc_send_cmd(mmc, &cmd, NULL);
-	if (err)
-		goto err_out;
-
-	return 0;
-
-err_out:
-	puts("mmc erase failed\n");
-	return err;
-}
-
-static unsigned long
-mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt)
-{
-	int err = 0;
-	struct mmc *mmc = find_mmc_device(dev_num);
-	lbaint_t blk = 0, blk_r = 0;
-	int timeout = 1000;
-
-	if (!mmc)
-		return -1;
-
-	if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size))
-		printf("\n\nCaution! Your devices Erase group is 0x%x\n"
-		       "The erase range would be change to "
-		       "0x" LBAF "~0x" LBAF "\n\n",
-		       mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
-		       ((start + blkcnt + mmc->erase_grp_size)
-		       & ~(mmc->erase_grp_size - 1)) - 1);
-
-	while (blk < blkcnt) {
-		blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
-			mmc->erase_grp_size : (blkcnt - blk);
-		err = mmc_erase_t(mmc, start + blk, blk_r);
-		if (err)
-			break;
-
-		blk += blk_r;
-
-		/* Waiting for the ready status */
-		if (mmc_send_status(mmc, timeout))
-			return 0;
-	}
-
-	return blk;
-}
-
-static ulong
-mmc_write_blocks(struct mmc *mmc, lbaint_t start, lbaint_t blkcnt, const void*src)
-{
-	struct mmc_cmd cmd;
-	struct mmc_data data;
-	int timeout = 1000;
-
-	if ((start + blkcnt) > mmc->block_dev.lba) {
-		printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
-			start + blkcnt, mmc->block_dev.lba);
-		return 0;
-	}
-
-	if (blkcnt == 0)
-		return 0;
-	else if (blkcnt == 1)
-		cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
-	else
-		cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
-
-	if (mmc->high_capacity)
-		cmd.cmdarg = start;
-	else
-		cmd.cmdarg = start * mmc->write_bl_len;
-
-	cmd.resp_type = MMC_RSP_R1;
-
-	data.src = src;
-	data.blocks = blkcnt;
-	data.blocksize = mmc->write_bl_len;
-	data.flags = MMC_DATA_WRITE;
-
-	if (mmc_send_cmd(mmc, &cmd, &data)) {
-		printf("mmc write failed\n");
-		return 0;
-	}
-
-	/* SPI multiblock writes terminate using a special
-	 * token, not a STOP_TRANSMISSION request.
-	 */
-	if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
-		cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
-		cmd.cmdarg = 0;
-		cmd.resp_type = MMC_RSP_R1b;
-		if (mmc_send_cmd(mmc, &cmd, NULL)) {
-			printf("mmc fail to send stop cmd\n");
-			return 0;
-		}
-	}
-
-	/* Waiting for the ready status */
-	if (mmc_send_status(mmc, timeout))
-		return 0;
-
-	return blkcnt;
-}
-
-static ulong
-mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, const void*src)
-{
-	lbaint_t cur, blocks_todo = blkcnt;
-
-	struct mmc *mmc = find_mmc_device(dev_num);
-	if (!mmc)
-		return 0;
-
-	if (mmc_set_blocklen(mmc, mmc->write_bl_len))
-		return 0;
-
-	do {
-		cur = (blocks_todo > mmc->b_max) ?  mmc->b_max : blocks_todo;
-		if(mmc_write_blocks(mmc, start, cur, src) != cur)
-			return 0;
-		blocks_todo -= cur;
-		start += cur;
-		src += cur * mmc->write_bl_len;
-	} while (blocks_todo > 0);
-
-	return blkcnt;
-}
-
 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
 			   lbaint_t blkcnt)
 {
@@ -385,7 +220,9 @@ static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
 		cmd.cmdarg = 0;
 		cmd.resp_type = MMC_RSP_R1b;
 		if (mmc_send_cmd(mmc, &cmd, NULL)) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 			printf("mmc fail to send stop cmd\n");
+#endif
 			return 0;
 		}
 	}
@@ -405,8 +242,10 @@ static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
 		return 0;
 
 	if ((start + blkcnt) > mmc->block_dev.lba) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 		printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
 			start + blkcnt, mmc->block_dev.lba);
+#endif
 		return 0;
 	}
 
@@ -1268,6 +1107,7 @@ static int mmc_startup(struct mmc *mmc)
 	mmc->block_dev.blksz = mmc->read_bl_len;
 	mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
 	mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 	sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
 		mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
 		(mmc->cid[3] >> 16) & 0xffff);
@@ -1277,6 +1117,11 @@ static int mmc_startup(struct mmc *mmc)
 		(mmc->cid[2] >> 24) & 0xff);
 	sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
 		(mmc->cid[2] >> 16) & 0xf);
+#else
+	mmc->block_dev.vendor[0] = 0;
+	mmc->block_dev.product[0] = 0;
+	mmc->block_dev.revision[0] = 0;
+#endif
 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
 	init_part(&mmc->block_dev);
 #endif
@@ -1343,7 +1188,9 @@ int mmc_start_init(struct mmc *mmc)
 
 	if (mmc_getcd(mmc) == 0) {
 		mmc->has_init = 0;
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 		printf("MMC: no card present\n");
+#endif
 		return NO_CARD_ERR;
 	}
 
@@ -1378,7 +1225,9 @@ int mmc_start_init(struct mmc *mmc)
 		err = mmc_send_op_cond(mmc);
 
 		if (err && err != IN_PROGRESS) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 			printf("Card did not respond to voltage select!\n");
+#endif
 			return UNUSABLE_ERR;
 		}
 	}
@@ -1434,6 +1283,8 @@ static int __def_mmc_init(bd_t *bis)
 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
 
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
+
 void print_mmc_devices(char separator)
 {
 	struct mmc *m;
@@ -1451,6 +1302,10 @@ void print_mmc_devices(char separator)
 	printf("\n");
 }
 
+#else
+void print_mmc_devices(char separator) { }
+#endif
+
 int get_mmc_num(void)
 {
 	return cur_dev_num;
diff --git a/drivers/mmc/mmc_private.h b/drivers/mmc/mmc_private.h
new file mode 100644
index 0000000000..16dcf9ff61
--- /dev/null
+++ b/drivers/mmc/mmc_private.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2008,2010 Freescale Semiconductor, Inc
+ * Andy Fleming
+ *
+ * Based (loosely) on the Linux code
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _MMC_PRIVATE_H_
+#define _MMC_PRIVATE_H_
+
+#include <mmc.h>
+
+extern int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
+			struct mmc_data *data);
+extern int mmc_send_status(struct mmc *mmc, int timeout);
+extern int mmc_set_blocklen(struct mmc *mmc, int len);
+
+#ifndef CONFIG_SPL_BUILD
+
+extern unsigned long mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt);
+
+extern ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt,
+		const void *src);
+
+#else /* CONFIG_SPL_BUILD */
+
+/* SPL will never write or erase, declare dummies to reduce code size. */
+
+static inline unsigned long mmc_berase(int dev_num, lbaint_t start,
+		lbaint_t blkcnt)
+{
+	return 0;
+}
+
+static inline ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt,
+		const void *src)
+{
+	return 0;
+}
+
+#endif /* CONFIG_SPL_BUILD */
+
+#endif /* _MMC_PRIVATE_H_ */
diff --git a/drivers/mmc/mmc_write.c b/drivers/mmc/mmc_write.c
new file mode 100644
index 0000000000..aa2fdefa75
--- /dev/null
+++ b/drivers/mmc/mmc_write.c
@@ -0,0 +1,179 @@
+/*
+ * Copyright 2008, Freescale Semiconductor, Inc
+ * Andy Fleming
+ *
+ * Based vaguely on the Linux code
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <part.h>
+#include "mmc_private.h"
+
+static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
+{
+	struct mmc_cmd cmd;
+	ulong end;
+	int err, start_cmd, end_cmd;
+
+	if (mmc->high_capacity) {
+		end = start + blkcnt - 1;
+	} else {
+		end = (start + blkcnt - 1) * mmc->write_bl_len;
+		start *= mmc->write_bl_len;
+	}
+
+	if (IS_SD(mmc)) {
+		start_cmd = SD_CMD_ERASE_WR_BLK_START;
+		end_cmd = SD_CMD_ERASE_WR_BLK_END;
+	} else {
+		start_cmd = MMC_CMD_ERASE_GROUP_START;
+		end_cmd = MMC_CMD_ERASE_GROUP_END;
+	}
+
+	cmd.cmdidx = start_cmd;
+	cmd.cmdarg = start;
+	cmd.resp_type = MMC_RSP_R1;
+
+	err = mmc_send_cmd(mmc, &cmd, NULL);
+	if (err)
+		goto err_out;
+
+	cmd.cmdidx = end_cmd;
+	cmd.cmdarg = end;
+
+	err = mmc_send_cmd(mmc, &cmd, NULL);
+	if (err)
+		goto err_out;
+
+	cmd.cmdidx = MMC_CMD_ERASE;
+	cmd.cmdarg = SECURE_ERASE;
+	cmd.resp_type = MMC_RSP_R1b;
+
+	err = mmc_send_cmd(mmc, &cmd, NULL);
+	if (err)
+		goto err_out;
+
+	return 0;
+
+err_out:
+	puts("mmc erase failed\n");
+	return err;
+}
+
+unsigned long mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt)
+{
+	int err = 0;
+	struct mmc *mmc = find_mmc_device(dev_num);
+	lbaint_t blk = 0, blk_r = 0;
+	int timeout = 1000;
+
+	if (!mmc)
+		return -1;
+
+	if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size))
+		printf("\n\nCaution! Your devices Erase group is 0x%x\n"
+		       "The erase range would be change to "
+		       "0x" LBAF "~0x" LBAF "\n\n",
+		       mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
+		       ((start + blkcnt + mmc->erase_grp_size)
+		       & ~(mmc->erase_grp_size - 1)) - 1);
+
+	while (blk < blkcnt) {
+		blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
+			mmc->erase_grp_size : (blkcnt - blk);
+		err = mmc_erase_t(mmc, start + blk, blk_r);
+		if (err)
+			break;
+
+		blk += blk_r;
+
+		/* Waiting for the ready status */
+		if (mmc_send_status(mmc, timeout))
+			return 0;
+	}
+
+	return blk;
+}
+
+static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start,
+		lbaint_t blkcnt, const void *src)
+{
+	struct mmc_cmd cmd;
+	struct mmc_data data;
+	int timeout = 1000;
+
+	if ((start + blkcnt) > mmc->block_dev.lba) {
+		printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
+		       start + blkcnt, mmc->block_dev.lba);
+		return 0;
+	}
+
+	if (blkcnt == 0)
+		return 0;
+	else if (blkcnt == 1)
+		cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
+	else
+		cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
+
+	if (mmc->high_capacity)
+		cmd.cmdarg = start;
+	else
+		cmd.cmdarg = start * mmc->write_bl_len;
+
+	cmd.resp_type = MMC_RSP_R1;
+
+	data.src = src;
+	data.blocks = blkcnt;
+	data.blocksize = mmc->write_bl_len;
+	data.flags = MMC_DATA_WRITE;
+
+	if (mmc_send_cmd(mmc, &cmd, &data)) {
+		printf("mmc write failed\n");
+		return 0;
+	}
+
+	/* SPI multiblock writes terminate using a special
+	 * token, not a STOP_TRANSMISSION request.
+	 */
+	if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
+		cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
+		cmd.cmdarg = 0;
+		cmd.resp_type = MMC_RSP_R1b;
+		if (mmc_send_cmd(mmc, &cmd, NULL)) {
+			printf("mmc fail to send stop cmd\n");
+			return 0;
+		}
+	}
+
+	/* Waiting for the ready status */
+	if (mmc_send_status(mmc, timeout))
+		return 0;
+
+	return blkcnt;
+}
+
+ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, const void *src)
+{
+	lbaint_t cur, blocks_todo = blkcnt;
+
+	struct mmc *mmc = find_mmc_device(dev_num);
+	if (!mmc)
+		return 0;
+
+	if (mmc_set_blocklen(mmc, mmc->write_bl_len))
+		return 0;
+
+	do {
+		cur = (blocks_todo > mmc->b_max) ?  mmc->b_max : blocks_todo;
+		if (mmc_write_blocks(mmc, start, cur, src) != cur)
+			return 0;
+		blocks_todo -= cur;
+		start += cur;
+		src += cur * mmc->write_bl_len;
+	} while (blocks_todo > 0);
+
+	return blkcnt;
+}
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 975b2c5ba4..d3a8b5303d 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -288,6 +288,30 @@ static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
 
 	mmc_reg_out(&mmc_base->sysctl, bit, bit);
 
+	/*
+	 * CMD(DAT) lines reset procedures are slightly different
+	 * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
+	 * According to OMAP3 TRM:
+	 * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
+	 * returns to 0x0.
+	 * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
+	 * procedure steps must be as follows:
+	 * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
+	 *    MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
+	 * 2. Poll the SRC(SRD) bit until it is set to 0x1.
+	 * 3. Wait until the SRC (SRD) bit returns to 0x0
+	 *    (reset procedure is completed).
+	 */
+#if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
+	defined(CONFIG_AM33XX)
+	if (!(readl(&mmc_base->sysctl) & bit)) {
+		start = get_timer(0);
+		while (!(readl(&mmc_base->sysctl) & bit)) {
+			if (get_timer(0) - start > MAX_RETRY_MS)
+				return;
+		}
+	}
+#endif
 	start = get_timer(0);
 	while ((readl(&mmc_base->sysctl) & bit) != 0) {
 		if (get_timer(0) - start > MAX_RETRY_MS) {
@@ -376,6 +400,7 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 	}
 
 	writel(cmd->cmdarg, &mmc_base->arg);
+	udelay(20);		/* To fix "No status update" error on eMMC */
 	writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
 
 	start = get_timer(0);
@@ -480,7 +505,7 @@ static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
 	unsigned int count;
 
 	/*
-	 * Start Polled Read
+	 * Start Polled Write
 	 */
 	count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
 	count /= 4;
@@ -586,6 +611,8 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
 {
 	struct mmc *mmc = &hsmmc_dev[dev_index];
 	struct omap_hsmmc_data *priv_data = &hsmmc_dev_data[dev_index];
+	uint host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
+			     MMC_MODE_HC;
 
 	sprintf(mmc->name, "OMAP SD/MMC");
 	mmc->send_cmd = mmc_send_cmd;
@@ -600,11 +627,20 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
 #ifdef OMAP_HSMMC2_BASE
 	case 1:
 		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
+#if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
+     defined(CONFIG_DRA7XX)) && defined(CONFIG_HSMMC2_8BIT)
+		/* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
+		host_caps_val |= MMC_MODE_8BIT;
+#endif
 		break;
 #endif
 #ifdef OMAP_HSMMC3_BASE
 	case 2:
 		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
+#if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT)
+		/* Enable 8-bit interface for eMMC on DRA7XX */
+		host_caps_val |= MMC_MODE_8BIT;
+#endif
 		break;
 #endif
 	default:
@@ -620,8 +656,7 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
 		mmc->getwp = omap_mmc_getwp;
 
 	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
-	mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
-				MMC_MODE_HC) & ~host_caps_mask;
+	mmc->host_caps = host_caps_val & ~host_caps_mask;
 
 	mmc->f_min = 400000;
 
diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
index 7f89403b43..40ff8739bf 100644
--- a/drivers/mmc/s5p_sdhci.c
+++ b/drivers/mmc/s5p_sdhci.c
@@ -72,7 +72,7 @@ int s5p_sdhci_init(u32 regbase, int index, int bus_width)
 
 	host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE |
 		SDHCI_QUIRK_BROKEN_R1B | SDHCI_QUIRK_32BIT_DMA_ADDR |
-		SDHCI_QUIRK_WAIT_SEND_CMD;
+		SDHCI_QUIRK_WAIT_SEND_CMD | SDHCI_QUIRK_USE_WIDE8;
 	host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
 	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
@@ -81,6 +81,8 @@ int s5p_sdhci_init(u32 regbase, int index, int bus_width)
 	host->index = index;
 
 	host->host_caps = MMC_MODE_HC;
+	if (bus_width == 8)
+		host->host_caps |= MMC_MODE_8BIT;
 
 	return add_sdhci(host, 52000000, 400000);
 }
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 42619916e5..dfb2eeeb4d 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -68,10 +68,9 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
 	unsigned int stat, rdy, mask, timeout, block = 0;
 #ifdef CONFIG_MMC_SDMA
 	unsigned char ctrl;
-	ctrl = sdhci_readl(host, SDHCI_HOST_CONTROL);
+	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	ctrl &= ~SDHCI_CTRL_DMA_MASK;
-	ctrl |= SDHCI_CTRL_SDMA;
-	sdhci_writel(host, ctrl, SDHCI_HOST_CONTROL);
+	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 #endif
 
 	timeout = 1000000;
@@ -254,7 +253,7 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
 	if (clock == 0)
 		return 0;
 
-	if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300) {
+	if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 		/* Version 3.00 divisors must be a multiple of 2. */
 		if (mmc->f_max <= clock)
 			div = 1;
@@ -347,10 +346,11 @@ void sdhci_set_ios(struct mmc *mmc)
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	if (mmc->bus_width == 8) {
 		ctrl &= ~SDHCI_CTRL_4BITBUS;
-		if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300)
+		if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
+				(host->quirks & SDHCI_QUIRK_USE_WIDE8))
 			ctrl |= SDHCI_CTRL_8BITBUS;
 	} else {
-		if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300)
+		if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 			ctrl &= ~SDHCI_CTRL_8BITBUS;
 		if (mmc->bus_width == 4)
 			ctrl |= SDHCI_CTRL_4BITBUS;
@@ -437,7 +437,7 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
 	if (max_clk)
 		mmc->f_max = max_clk;
 	else {
-		if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300)
+		if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 			mmc->f_max = (caps & SDHCI_CLOCK_V3_BASE_MASK)
 				>> SDHCI_CLOCK_BASE_SHIFT;
 		else
@@ -452,7 +452,7 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
 	if (min_clk)
 		mmc->f_min = min_clk;
 	else {
-		if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300)
+		if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 			mmc->f_min = mmc->f_max / SDHCI_MAX_DIV_SPEC_300;
 		else
 			mmc->f_min = mmc->f_max / SDHCI_MAX_DIV_SPEC_200;
@@ -470,7 +470,7 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
 		mmc->voltages |= host->voltages;
 
 	mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
-	if ((host->version & SDHCI_SPEC_VER_MASK) >= SDHCI_SPEC_300) {
+	if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 		if (caps & SDHCI_CAN_DO_8BIT)
 			mmc->host_caps |= MMC_MODE_8BIT;
 	}