/*
* 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.
*/
#include <asm/errno.h>
#include <asm/byteorder.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
+#include <asm/portmux.h>
#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
+#if defined(__ADSPBF50x__) || defined(__ADSPBF51x__) || defined(__ADSPBF60x__)
# define bfin_read_SDH_CLK_CTL bfin_read_RSI_CLK_CONTROL
# define bfin_write_SDH_CLK_CTL bfin_write_RSI_CLK_CONTROL
# define bfin_write_SDH_ARGUMENT bfin_write_RSI_ARGUMENT
# define bfin_write_SDH_STATUS_CLR bfin_write_RSI_STATUSCL
# define bfin_read_SDH_CFG bfin_read_RSI_CONFIG
# define bfin_write_SDH_CFG bfin_write_RSI_CONFIG
+# if defined(__ADSPBF60x__)
+# define bfin_read_SDH_BLK_SIZE bfin_read_RSI_BLKSZ
+# define bfin_write_SDH_BLK_SIZE bfin_write_RSI_BLKSZ
+# define bfin_write_DMA_START_ADDR bfin_write_DMA10_START_ADDR
+# define bfin_write_DMA_X_COUNT bfin_write_DMA10_X_COUNT
+# define bfin_write_DMA_X_MODIFY bfin_write_DMA10_X_MODIFY
+# define bfin_write_DMA_CONFIG bfin_write_DMA10_CONFIG
+# else
+# define bfin_read_SDH_PWR_CTL bfin_read_RSI_PWR_CONTROL
+# define bfin_write_SDH_PWR_CTL bfin_write_RSI_PWR_CONTROL
# define bfin_write_DMA_START_ADDR bfin_write_DMA4_START_ADDR
# define bfin_write_DMA_X_COUNT bfin_write_DMA4_X_COUNT
# define bfin_write_DMA_X_MODIFY bfin_write_DMA4_X_MODIFY
# define bfin_write_DMA_CONFIG bfin_write_DMA4_CONFIG
+# endif
+# define PORTMUX_PINS \
+ { P_RSI_DATA0, P_RSI_DATA1, P_RSI_DATA2, P_RSI_DATA3, P_RSI_CMD, P_RSI_CLK, 0 }
#elif defined(__ADSPBF54x__)
# define bfin_write_DMA_START_ADDR bfin_write_DMA22_START_ADDR
# define bfin_write_DMA_X_COUNT bfin_write_DMA22_X_COUNT
# define bfin_write_DMA_X_MODIFY bfin_write_DMA22_X_MODIFY
# define bfin_write_DMA_CONFIG bfin_write_DMA22_CONFIG
+# define PORTMUX_PINS \
+ { P_SD_D0, P_SD_D1, P_SD_D2, P_SD_D3, P_SD_CLK, P_SD_CMD, 0 }
#else
# 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 ret = 0;
- sdh_cmd = 0;
- unsigned long *response = resp;
- sdh_cmd |= cmd;
+ unsigned int status, timeout;
+ int cmd = mmc_cmd->cmdidx;
+ int flags = mmc_cmd->resp_type;
+ int arg = mmc_cmd->cmdarg;
+ int ret;
+ u16 sdh_cmd;
+ sdh_cmd = cmd | CMD_E;
if (flags & MMC_RSP_PRESENT)
sdh_cmd |= CMD_RSP;
-
if (flags & MMC_RSP_136)
sdh_cmd |= CMD_L_RSP;
+#ifdef RSI_BLKSZ
+ sdh_cmd |= CMD_DATA0_BUSY;
+#endif
bfin_write_SDH_ARGUMENT(arg);
- bfin_write_SDH_COMMAND(sdh_cmd | CMD_E);
+ bfin_write_SDH_COMMAND(sdh_cmd);
/* wait for a while */
+ timeout = 0;
do {
+ if (++timeout > 1000000) {
+ status = CMD_TIME_OUT;
+ break;
+ }
udelay(1);
status = bfin_read_SDH_STATUS();
} while (!(status & (CMD_SENT | CMD_RESP_END | CMD_TIME_OUT |
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;
+ else
+ ret = 0;
+
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)
-{
- unsigned long aresp[4];
- int ret = 0;
-
- ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp,
- MMC_RSP_PRESENT);
- if (ret)
- return ret;
+#ifdef RSI_BLKSZ
+ /* wait till card ready */
+ while (!(bfin_read_RSI_ESTAT() & SD_CARD_READY))
+ continue;
+ bfin_write_RSI_ESTAT(SD_CARD_READY);
+#endif
- 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)
+/* set data for single block transfer */
+static int sdh_setup_data(struct mmc *mmc, struct mmc_data *data)
{
- 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;
+ u16 data_ctl = 0;
+ u16 dma_cfg = 0;
+ unsigned long data_size = data->blocksize * data->blocks;
+
+ /* Don't support write yet. */
+ if (data->flags & MMC_DATA_WRITE)
+ return UNUSABLE_ERR;
+#ifndef RSI_BLKSZ
+ data_ctl |= ((ffs(data_size) - 1) << 4);
+#else
+ bfin_write_SDH_BLK_SIZE(data_size);
+#endif
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 | PSIZE_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(-1);
- return i;
+ blackfin_dcache_flush_invalidate_range(data->dest,
+ data->dest + data_size);
+ /* configure DMA */
+ bfin_write_DMA_START_ADDR(data->dest);
+ bfin_write_DMA_X_COUNT(data_size / 4);
+ bfin_write_DMA_X_MODIFY(4);
+ bfin_write_DMA_CONFIG(dma_cfg);
+ bfin_write_SDH_DATA_LGTH(data_size);
+ /* 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 0;
}
-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_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;
+
+ if (data) {
+ ret = sdh_setup_data(mmc, data);
+ if (ret)
+ return ret;
+ }
+
+ ret = sdh_send_cmd(mmc, cmd);
+ if (ret) {
+ bfin_write_SDH_COMMAND(0);
+ bfin_write_DMA_CONFIG(0);
+ bfin_write_SDH_DATA_CTL(0);
+ SSYNC();
+ printf("sending CMD%d failed\n", cmd->cmdidx);
+ return ret;
+ }
+ if (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;
- }
- if (ret)
- return ret;
+ u16 cfg = 0;
+ u16 clk_ctl = 0;
- 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;
-}
-
-static int mmc_init_card(struct mmc_cid *cid, int verbose)
-{
- 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 (mmc->bus_width == 4) {
+ cfg = bfin_read_SDH_CFG();
+#ifndef RSI_BLKSZ
+ cfg &= ~PD_SDDAT3;
+#endif
+ cfg |= PUP_SDDAT3;
+ bfin_write_SDH_CFG(cfg);
+ clk_ctl |= WIDE_BUS_4;
}
- 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;
+ bfin_write_SDH_CLK_CTL(clk_ctl);
+ sdh_set_clk(mmc->clock);
}
-int mmc_init(int verbose)
+static int bfin_sdh_init(struct mmc *mmc)
{
- __u16 pwr_ctl = 0;
+ const unsigned short pins[] = PORTMUX_PINS;
int ret;
- unsigned int max_blksz;
+
/* Initialize sdh controller */
+ ret = peripheral_request_list(pins, "bfin_sdh");
+ if (ret < 0)
+ return ret;
#if defined(__ADSPBF54x__)
bfin_write_DMAC1_PERIMUX(bfin_read_DMAC1_PERIMUX() | 0x1);
- bfin_write_PORTC_FER(bfin_read_PORTC_FER() | 0x3F00);
- bfin_write_PORTC_MUX(bfin_read_PORTC_MUX() & ~0xFFF0000);
-#elif defined(__ADSPBF51x__)
- bfin_write_PORTG_FER(bfin_read_PORTG_FER() | 0x01F8);
- bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & ~0x3FC) | 0x154);
-#else
-# error no portmux for this proc yet
#endif
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);
+#ifndef RSI_BLKSZ
+ bfin_write_SDH_PWR_CTL(PWR_ON | ROD_CTL);
+#else
+ bfin_write_SDH_CFG(bfin_read_SDH_CFG() | PWR_ON);
+#endif
return 0;
}
-int mmc_read(ulong src, uchar *dst, int size)
+static const struct mmc_ops bfin_mmc_ops = {
+ .send_cmd = bfin_sdh_request,
+ .set_ios = bfin_sdh_set_ios,
+ .init = bfin_sdh_init,
+};
+
+static struct mmc_config bfin_mmc_cfg = {
+ .name = "Blackfin SDH",
+ .ops = &bfin_mmc_ops,
+ .host_caps = MMC_MODE_4BIT,
+ .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
+ .b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT,
+};
+
+int bfin_mmc_init(bd_t *bis)
{
- return -ENOSYS;
-}
+ struct mmc *mmc;
-int mmc_write(uchar *src, ulong dst, int size)
-{
- return -ENOSYS;
-}
+ bfin_mmc_cfg.f_max = get_sclk();
+ bfin_mmc_cfg.f_min = bfin_mmc_cfg.f_max >> 9;
+
+ mmc = mmc_create(&bfin_mmc_cfg, NULL);
+ if (mmc == NULL)
+ return -1;
-int mmc2info(ulong addr)
-{
return 0;
}
projects / karo-tx-uboot.git / blobdiff