Blackfin: convert bfin_sdh to generic mmc

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 120 insertions, 399 deletions

diff --git a/drivers/mmc/bfin_sdh.c b/drivers/mmc/bfin_sdh.c
index 16c9695..f9d560a 100644
--- a/drivers/mmc/bfin_sdh.c
+++ b/drivers/mmc/bfin_sdh.c
@@ -1,7 +1,7 @@
 /*
  * Driver for Blackfin on-chip SDH controller
  *
- * Copyright (c) 2008 Analog Devices Inc.
+ * Copyright (c) 2008-2009 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later.
  */
@@ -18,20 +18,6 @@
 #include <asm/mach-common/bits/sdh.h>
 #include <asm/mach-common/bits/dma.h>
 
-#include "bfin_sdh.h"
-
-/* SD_CLK frequency must be less than 400k in identification mode */
-#ifndef CONFIG_SYS_MMC_CLK_ID
-#define CONFIG_SYS_MMC_CLK_ID		200000
-#endif
-/* SD_CLK for normal working */
-#ifndef CONFIG_SYS_MMC_CLK_OP
-#define CONFIG_SYS_MMC_CLK_OP		25000000
-#endif
-/* support 3.2-3.3V and 3.3-3.4V */
-#define CONFIG_SYS_MMC_OP_COND		0x00300000
-#define MMC_DEFAULT_RCA		1
-
 #if defined(__ADSPBF51x__)
 # define bfin_read_SDH_PWR_CTL		bfin_read_RSI_PWR_CONTROL
 # define bfin_write_SDH_PWR_CTL		bfin_write_RSI_PWR_CONTROL
@@ -64,61 +50,17 @@
 # error no support for this proc yet
 #endif
 
-static unsigned int mmc_rca;
-static int mmc_card_is_sd;
-static block_dev_desc_t mmc_blkdev;
-struct mmc_cid cid;
-static __u32 csd[4];
-
-#define get_bits(resp, start, size)					\
-	({								\
-		const int __size = size;				\
-		const uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1;	\
-		const int32_t __off = 3 - ((start) / 32);			\
-		const int32_t __shft = (start) & 31;			\
-		uint32_t __res;						\
-									\
-		__res = resp[__off] >> __shft;				\
-		if (__size + __shft > 32)				\
-			__res |= resp[__off-1] << ((32 - __shft) % 32);	\
-		__res & __mask;						\
-	})
-
-
-block_dev_desc_t *mmc_get_dev(int dev)
-{
-	return &mmc_blkdev;
-}
-
-static void mci_set_clk(unsigned long clk)
-{
-	unsigned long sys_clk;
-	unsigned long clk_div;
-	__u16 clk_ctl = 0;
-
-	/* setting SD_CLK */
-	sys_clk = get_sclk();
-	bfin_write_SDH_CLK_CTL(0);
-	if (sys_clk % (2 * clk) == 0)
-		clk_div = sys_clk / (2 * clk) - 1;
-	else
-		clk_div = sys_clk / (2 * clk);
-
-	if (clk_div > 0xff)
-		clk_div = 0xff;
-	clk_ctl |= (clk_div & 0xff);
-	clk_ctl |= CLK_E;
-	bfin_write_SDH_CLK_CTL(clk_ctl);
-}
-
 static int
-mmc_cmd(unsigned long cmd, unsigned long arg, void *resp, unsigned long flags)
+sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd)
 {
 	unsigned int sdh_cmd;
 	unsigned int status;
+	int cmd = mmc_cmd->cmdidx;
+	int flags = mmc_cmd->resp_type;
+	int arg = mmc_cmd->cmdarg;
 	int ret = 0;
 	sdh_cmd = 0;
-	unsigned long *response = resp;
+
 	sdh_cmd |= cmd;
 
 	if (flags & MMC_RSP_PRESENT)
@@ -138,336 +80,137 @@ mmc_cmd(unsigned long cmd, unsigned long arg, void *resp, unsigned long flags)
 		CMD_CRC_FAIL)));
 
 	if (flags & MMC_RSP_PRESENT) {
-		response[0] = bfin_read_SDH_RESPONSE0();
+		mmc_cmd->response[0] = bfin_read_SDH_RESPONSE0();
 		if (flags & MMC_RSP_136) {
-			response[1] = bfin_read_SDH_RESPONSE1();
-			response[2] = bfin_read_SDH_RESPONSE2();
-			response[3] = bfin_read_SDH_RESPONSE3();
+			mmc_cmd->response[1] = bfin_read_SDH_RESPONSE1();
+			mmc_cmd->response[2] = bfin_read_SDH_RESPONSE2();
+			mmc_cmd->response[3] = bfin_read_SDH_RESPONSE3();
 		}
 	}
 
-	if (status & CMD_TIME_OUT) {
-		printf("CMD%d timeout\n", (int)cmd);
-		ret |= -ETIMEDOUT;
-	} else if (status & CMD_CRC_FAIL && flags & MMC_RSP_CRC) {
-		printf("CMD%d CRC failure\n", (int)cmd);
-		ret |= -EILSEQ;
-	}
+	if (status & CMD_TIME_OUT)
+		ret |= TIMEOUT;
+	else if (status & CMD_CRC_FAIL && flags & MMC_RSP_CRC)
+		ret |= COMM_ERR;
+
 	bfin_write_SDH_STATUS_CLR(CMD_SENT_STAT | CMD_RESP_END_STAT |
 				CMD_TIMEOUT_STAT | CMD_CRC_FAIL_STAT);
 	return ret;
 }
 
-static int
-mmc_acmd(unsigned long cmd, unsigned long arg, void *resp, unsigned long flags)
+/* set data for single block transfer */
+static int sdh_setup_data(struct mmc *mmc, struct mmc_data *data)
 {
-	unsigned long aresp[4];
+	u16 data_ctl = 0;
+	u16 dma_cfg = 0;
 	int ret = 0;
 
-	ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp,
-		      MMC_RSP_PRESENT);
-	if (ret)
-		return ret;
-
-	if ((aresp[0] & (ILLEGAL_COMMAND | APP_CMD)) != APP_CMD)
-		return -ENODEV;
-	ret = mmc_cmd(cmd, arg, resp, flags);
-	return ret;
-}
-
-static unsigned long
-mmc_bread(int dev, unsigned long start, lbaint_t blkcnt, void *buffer)
-{
-	int ret, i;
-	unsigned long resp[4];
-	unsigned long card_status;
-	__u8 *buf = buffer;
-	__u32 status;
-	__u16 data_ctl = 0;
-	__u16 dma_cfg = 0;
-
-	if (blkcnt == 0)
-		return 0;
-	debug("mmc_bread: dev %d, start %d, blkcnt %d\n", dev, start, blkcnt);
-	/* Force to use 512-byte block,because a lot of code depends on this */
-	data_ctl |= 9 << 4;
+	/* Don't support write yet. */
+	if (data->flags & MMC_DATA_WRITE)
+		return UNUSABLE_ERR;
+	data_ctl |= ((ffs(data->blocksize) - 1) << 4);
 	data_ctl |= DTX_DIR;
 	bfin_write_SDH_DATA_CTL(data_ctl);
-	dma_cfg |= WDSIZE_32 | RESTART | WNR | DMAEN;
-
-	/* FIXME later */
-	bfin_write_SDH_DATA_TIMER(0xFFFFFFFF);
-	for (i = 0; i < blkcnt; ++i, ++start) {
-		blackfin_dcache_flush_invalidate_range(buf + i * mmc_blkdev.blksz,
-			buf + (i + 1) * mmc_blkdev.blksz);
-		bfin_write_DMA_START_ADDR(buf + i * mmc_blkdev.blksz);
-		bfin_write_DMA_X_COUNT(mmc_blkdev.blksz / 4);
-		bfin_write_DMA_X_MODIFY(4);
-		bfin_write_DMA_CONFIG(dma_cfg);
-		bfin_write_SDH_DATA_LGTH(mmc_blkdev.blksz);
-		/* Put the device into Transfer state */
-		ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_SELECT_CARD failed\n");
-			goto out;
-		}
-		/* Set block length */
-		ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_SET_BLOCKLEN failed\n");
-			goto out;
-		}
-		ret = mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK,
-			      start * mmc_blkdev.blksz, resp,
-			      MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_READ_SINGLE_BLOCK failed\n");
-			goto out;
-		}
-		bfin_write_SDH_DATA_CTL(bfin_read_SDH_DATA_CTL() | DTX_DMA_E | DTX_E);
+	dma_cfg = WDSIZE_32 | RESTART | WNR | DMAEN;
 
-		do {
-			udelay(1);
-			status = bfin_read_SDH_STATUS();
-		} while (!(status & (DAT_BLK_END | DAT_END | DAT_TIME_OUT | DAT_CRC_FAIL | RX_OVERRUN)));
-
-		if (status & (DAT_TIME_OUT | DAT_CRC_FAIL | RX_OVERRUN)) {
-			bfin_write_SDH_STATUS_CLR(DAT_TIMEOUT_STAT | \
-				DAT_CRC_FAIL_STAT | RX_OVERRUN_STAT);
-			goto read_error;
-		} else {
-			bfin_write_SDH_STATUS_CLR(DAT_BLK_END_STAT | DAT_END_STAT);
-			mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, 0);
-		}
-	}
- out:
+	bfin_write_SDH_DATA_TIMER(0xFFFF);
 
-	return i;
+	blackfin_dcache_flush_invalidate_range(data->dest,
+			data->dest + data->blocksize);
+	/* configure DMA */
+	bfin_write_DMA_START_ADDR(data->dest);
+	bfin_write_DMA_X_COUNT(data->blocksize / 4);
+	bfin_write_DMA_X_MODIFY(4);
+	bfin_write_DMA_CONFIG(dma_cfg);
+	bfin_write_SDH_DATA_LGTH(data->blocksize);
+	/* kick off transfer */
+	bfin_write_SDH_DATA_CTL(bfin_read_SDH_DATA_CTL() | DTX_DMA_E | DTX_E);
 
- read_error:
-	mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, MMC_RSP_R1);
-	printf("mmc: bread failed, status = %08x, card status = %08lx\n",
-	       status, card_status);
-	goto out;
+	return ret;
 }
 
-static unsigned long
-mmc_bwrite(int dev, unsigned long start, lbaint_t blkcnt, const void *buffer)
+
+static int bfin_sdh_request(struct mmc *mmc, struct mmc_cmd *cmd,
+		struct mmc_data *data)
 {
-	int ret, i = 0;
-	unsigned long resp[4];
-	unsigned long card_status;
-	const __u8 *buf = buffer;
-	__u32 status;
-	__u16 data_ctl = 0;
-	__u16 dma_cfg = 0;
-
-	if (blkcnt == 0)
-		return 0;
-
-	debug("mmc_bwrite: dev %d, start %lx, blkcnt %lx\n",
-		 dev, start, blkcnt);
-	/* Force to use 512-byte block,because a lot of code depends on this */
-	data_ctl |= 9 << 4;
-	data_ctl &= ~DTX_DIR;
-	bfin_write_SDH_DATA_CTL(data_ctl);
-	dma_cfg |= WDSIZE_32 | RESTART | DMAEN;
-	/* FIXME later */
-	bfin_write_SDH_DATA_TIMER(0xFFFFFFFF);
-	for (i = 0; i < blkcnt; ++i, ++start) {
-		bfin_write_DMA_START_ADDR(buf + i * mmc_blkdev.blksz);
-		bfin_write_DMA_X_COUNT(mmc_blkdev.blksz / 4);
-		bfin_write_DMA_X_MODIFY(4);
-		bfin_write_DMA_CONFIG(dma_cfg);
-		bfin_write_SDH_DATA_LGTH(mmc_blkdev.blksz);
-
-		/* Put the device into Transfer state */
-		ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_SELECT_CARD failed\n");
-			goto out;
-		}
-		/* Set block length */
-		ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_SET_BLOCKLEN failed\n");
-			goto out;
-		}
-		ret = mmc_cmd(MMC_CMD_WRITE_SINGLE_BLOCK,
-			      start * mmc_blkdev.blksz, resp,
-			      MMC_RSP_R1);
-		if (ret) {
-			printf("MMC_CMD_WRITE_SINGLE_BLOCK failed\n");
-			goto out;
-		}
-		bfin_write_SDH_DATA_CTL(bfin_read_SDH_DATA_CTL() | DTX_DMA_E | DTX_E);
+	u32 status;
+	int ret = 0;
 
+	ret = sdh_send_cmd(mmc, cmd);
+	if (ret) {
+		printf("sending CMD%d failed\n", cmd->cmdidx);
+		return ret;
+	}
+	if (data) {
+		ret = sdh_setup_data(mmc, data);
 		do {
 			udelay(1);
 			status = bfin_read_SDH_STATUS();
-		} while (!(status & (DAT_BLK_END | DAT_END | DAT_TIME_OUT | DAT_CRC_FAIL | TX_UNDERRUN)));
+		} while (!(status & (DAT_BLK_END | DAT_END | DAT_TIME_OUT | DAT_CRC_FAIL | RX_OVERRUN)));
 
-		if (status & (DAT_TIME_OUT | DAT_CRC_FAIL | TX_UNDERRUN)) {
-			bfin_write_SDH_STATUS_CLR(DAT_TIMEOUT_STAT |
-				DAT_CRC_FAIL_STAT | TX_UNDERRUN_STAT);
-			goto write_error;
-		} else {
+		if (status & DAT_TIME_OUT) {
+			bfin_write_SDH_STATUS_CLR(DAT_TIMEOUT_STAT);
+			ret |= TIMEOUT;
+		} else if (status & (DAT_CRC_FAIL | RX_OVERRUN)) {
+			bfin_write_SDH_STATUS_CLR(DAT_CRC_FAIL_STAT | RX_OVERRUN_STAT);
+			ret |= COMM_ERR;
+		} else
 			bfin_write_SDH_STATUS_CLR(DAT_BLK_END_STAT | DAT_END_STAT);
-			mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, 0);
+
+		if (ret) {
+			printf("tranfering data failed\n");
+			return ret;
 		}
 	}
- out:
-	return i;
-
- write_error:
-	mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, MMC_RSP_R1);
-	printf("mmc: bwrite failed, status = %08x, card status = %08lx\n",
-	       status, card_status);
-	goto out;
-}
-
-static void mmc_parse_cid(struct mmc_cid *cid, unsigned long *resp)
-{
-	cid->mid = resp[0] >> 24;
-	cid->oid = (resp[0] >> 8) & 0xffff;
-	cid->pnm[0] = resp[0];
-	cid->pnm[1] = resp[1] >> 24;
-	cid->pnm[2] = resp[1] >> 16;
-	cid->pnm[3] = resp[1] >> 8;
-	cid->pnm[4] = resp[1];
-	cid->pnm[5] = resp[2] >> 24;
-	cid->pnm[6] = 0;
-	cid->prv = resp[2] >> 16;
-	cid->psn = (resp[2] << 16) | (resp[3] >> 16);
-	cid->mdt = resp[3] >> 8;
-}
-
-static void sd_parse_cid(struct mmc_cid *cid, unsigned long *resp)
-{
-	cid->mid = resp[0] >> 24;
-	cid->oid = (resp[0] >> 8) & 0xffff;
-	cid->pnm[0] = resp[0];
-	cid->pnm[1] = resp[1] >> 24;
-	cid->pnm[2] = resp[1] >> 16;
-	cid->pnm[3] = resp[1] >> 8;
-	cid->pnm[4] = resp[1];
-	cid->pnm[5] = 0;
-	cid->pnm[6] = 0;
-	cid->prv = resp[2] >> 24;
-	cid->psn = (resp[2] << 8) | (resp[3] >> 24);
-	cid->mdt = (resp[3] >> 8) & 0x0fff;
-}
-
-static void mmc_dump_cid(const struct mmc_cid *cid)
-{
-	printf("CID information:\n");
-	printf("Manufacturer ID:       %02X\n", cid->mid);
-	printf("OEM/Application ID:    %04X\n", cid->oid);
-	printf("Product name:          %s\n", cid->pnm);
-	printf("Product Revision:      %u.%u\n",
-	       cid->prv >> 4, cid->prv & 0x0f);
-	printf("Product Serial Number: %lu\n", cid->psn);
-	printf("Manufacturing Date:    %02u/%02u\n",
-	       cid->mdt >> 4, cid->mdt & 0x0f);
-}
-
-static void mmc_dump_csd(__u32 *csd)
-{
-	printf("CSD information:\n");
-	printf("CSD structure version:   1.%u\n", get_bits(csd, 126, 2));
-	printf("Card command classes:    %03x\n", get_bits(csd, 84, 12));
-	printf("Max trans speed: %s\n", (get_bits(csd, 96, 8) == 0x32) ? "25MHz" : "50MHz");
-	printf("Read block length:       %d\n", 1 << get_bits(csd, 80, 4));
-	printf("Write block length:      %u\n", 1 << get_bits(csd, 22, 4));
-	printf("Card capacity:		%u bytes\n",
-	       (get_bits(csd, 62, 12) + 1) * (1 << (get_bits(csd, 47, 3) + 2)) *
-	       (1 << get_bits(csd, 80, 4)));
-	putc('\n');
+	return 0;
 }
 
-static int mmc_idle_cards(void)
+static void sdh_set_clk(unsigned long clk)
 {
-	int ret = 0;
-
-	/* Reset all cards */
-	ret = mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0);
-	if (ret)
-		return ret;
-	udelay(500);
-	return mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0);
+	unsigned long sys_clk;
+	unsigned long clk_div;
+	u16 clk_ctl = 0;
+
+	clk_ctl = bfin_read_SDH_CLK_CTL();
+	if (clk) {
+		/* setting SD_CLK */
+		sys_clk = get_sclk();
+		bfin_write_SDH_CLK_CTL(clk_ctl & ~CLK_E);
+		if (sys_clk % (2 * clk) == 0)
+			clk_div = sys_clk / (2 * clk) - 1;
+		else
+			clk_div = sys_clk / (2 * clk);
+
+		if (clk_div > 0xff)
+			clk_div = 0xff;
+		clk_ctl |= (clk_div & 0xff);
+		clk_ctl |= CLK_E;
+		bfin_write_SDH_CLK_CTL(clk_ctl);
+	} else
+		bfin_write_SDH_CLK_CTL(clk_ctl & ~CLK_E);
 }
 
-static int sd_init_card(struct mmc_cid *cid, int verbose)
+static void bfin_sdh_set_ios(struct mmc *mmc)
 {
-	unsigned long resp[4];
-	int i, ret = 0;
-
-	mmc_idle_cards();
-	for (i = 0; i < 1000; ++i) {
-		ret = mmc_acmd(SD_CMD_APP_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND,
-			       resp, MMC_RSP_R3);
-		if (ret || (resp[0] & 0x80000000))
-			break;
-		ret = -ETIMEDOUT;
+	u16 cfg = 0;
+	u16 clk_ctl = 0;
+
+	if (mmc->bus_width == 4) {
+		cfg = bfin_read_SDH_CFG();
+		cfg &= ~0x80;
+		cfg |= 0x40;
+		bfin_write_SDH_CFG(cfg);
+		clk_ctl |= WIDE_BUS;
 	}
-	if (ret)
-		return ret;
-
-	ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, MMC_RSP_R2);
-	if (ret)
-		return ret;
-	sd_parse_cid(cid, resp);
-	if (verbose)
-		mmc_dump_cid(cid);
-
-	/* Get RCA of the card that responded */
-	ret = mmc_cmd(SD_CMD_SEND_RELATIVE_ADDR, 0, resp, MMC_RSP_R6);
-	if (ret)
-		return ret;
-
-	mmc_rca = (resp[0] >> 16) & 0xffff;
-	if (verbose)
-		printf("SD Card detected (RCA %u)\n", mmc_rca);
-	mmc_card_is_sd = 1;
-	return 0;
+	bfin_write_SDH_CLK_CTL(clk_ctl);
+	sdh_set_clk(mmc->clock);
 }
 
-static int mmc_init_card(struct mmc_cid *cid, int verbose)
+static int bfin_sdh_init(struct mmc *mmc)
 {
-	unsigned long resp[4];
-	int i, ret = 0;
-
-	mmc_idle_cards();
-	for (i = 0; i < 1000; ++i) {
-		ret = mmc_cmd(MMC_CMD_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, resp,
-			      MMC_RSP_R3);
-		if (ret || (resp[0] & 0x80000000))
-			break;
-		ret = -ETIMEDOUT;
-	}
-	if (ret)
-		return ret;
 
-	/* Get CID of all cards. FIXME: Support more than one card */
-	ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, MMC_RSP_R2);
-	if (ret)
-		return ret;
-	mmc_parse_cid(cid, resp);
-	if (verbose)
-		mmc_dump_cid(cid);
-
-	/* Set Relative Address of the card that responded */
-	ret = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, mmc_rca << 16, resp,
-		      MMC_RSP_R1);
-	return ret;
-}
-
-int mmc_legacy_init(int verbose)
-{
-	__u16 pwr_ctl = 0;
-	int ret;
-	unsigned int max_blksz;
-	/* Initialize sdh controller */
+	u16 pwr_ctl = 0;
+/* Initialize sdh controller */
 #if defined(__ADSPBF54x__)
 	bfin_write_DMAC1_PERIMUX(bfin_read_DMAC1_PERIMUX() | 0x1);
 	bfin_write_PORTC_FER(bfin_read_PORTC_FER() | 0x3F00);
@@ -481,56 +224,34 @@ int mmc_legacy_init(int verbose)
 	bfin_write_SDH_CFG(bfin_read_SDH_CFG() | CLKS_EN);
 	/* Disable card detect pin */
 	bfin_write_SDH_CFG((bfin_read_SDH_CFG() & 0x1F) | 0x60);
-	mci_set_clk(CONFIG_SYS_MMC_CLK_ID);
-	/* setting power control */
+
 	pwr_ctl |= ROD_CTL;
 	pwr_ctl |= PWR_ON;
 	bfin_write_SDH_PWR_CTL(pwr_ctl);
-	mmc_card_is_sd = 0;
-	ret = sd_init_card(&cid, verbose);
-	if (ret) {
-		mmc_rca = MMC_DEFAULT_RCA;
-		ret = mmc_init_card(&cid, verbose);
-	}
-	if (ret)
-		return ret;
-	/* Get CSD from the card */
-	ret = mmc_cmd(MMC_CMD_SEND_CSD, mmc_rca << 16, csd, MMC_RSP_R2);
-	if (ret)
-		return ret;
-	if (verbose)
-		mmc_dump_csd(csd);
-	/* Initialize the blockdev structure */
-	mmc_blkdev.if_type = IF_TYPE_MMC;
-	mmc_blkdev.part_type = PART_TYPE_DOS;
-	mmc_blkdev.block_read = mmc_bread;
-	mmc_blkdev.block_write = mmc_bwrite;
-	sprintf(mmc_blkdev.vendor,
-		"Man %02x%04x Snr %08lx",
-		cid.mid, cid.oid, cid.psn);
-	strncpy(mmc_blkdev.product, cid.pnm,
-		sizeof(mmc_blkdev.product));
-	sprintf(mmc_blkdev.revision, "%x %x",
-		cid.prv >> 4, cid.prv & 0x0f);
-
-	max_blksz = 1 << get_bits(csd, 80, 4);
-	/*
-	 * If we can't use 512 byte blocks, refuse to deal with the
-	 * card. Tons of code elsewhere seems to depend on this.
-	 */
-	if (max_blksz < 512 || (max_blksz > 512 && !get_bits(csd, 79, 1))) {
-		printf("Card does not support 512 byte reads, aborting.\n");
-		return -ENODEV;
-	}
-
-	mmc_blkdev.blksz = 512;
-	mmc_blkdev.lba = (get_bits(csd, 62, 12) + 1) * (1 << (get_bits(csd, 47, 3) + 2));
-	mci_set_clk(CONFIG_SYS_MMC_CLK_OP);
-	init_part(&mmc_blkdev);
 	return 0;
 }
 
-int mmc2info(ulong addr)
+
+int bfin_mmc_init(bd_t *bis)
 {
+	struct mmc *mmc = NULL;
+
+	mmc = malloc(sizeof(struct mmc));
+
+	if (!mmc)
+		return -ENOMEM;
+	sprintf(mmc->name, "Blackfin SDH");
+	mmc->send_cmd = bfin_sdh_request;
+	mmc->set_ios = bfin_sdh_set_ios;
+	mmc->init = bfin_sdh_init;
+	mmc->host_caps = MMC_MODE_4BIT;
+
+	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+	mmc->f_max = get_sclk();
+	mmc->f_min = mmc->f_max >> 9;
+	mmc->block_dev.part_type = PART_TYPE_DOS;
+
+	mmc_register(mmc);
+
 	return 0;
 }