This patch updates (well, pretty much rewrites, actually) the atmel_mci driver so that it can be used with the new mmc API. Currently, the driver only supports what the previous driver supported, that is: - assumes that the MMC slot was configured in the cpu/board code, no slot-switching - doesn't support writing, only reading Support for these features will come in a later patch.
Signed-off-by: Albin Tonnerre <[email protected]> --- drivers/mmc/atmel_mci.c | 604 +++++++++++++++++++---------------------------- 1 files changed, 240 insertions(+), 364 deletions(-) diff --git a/drivers/mmc/atmel_mci.c b/drivers/mmc/atmel_mci.c index 3946ffe..b07deba 100644 --- a/drivers/mmc/atmel_mci.c +++ b/drivers/mmc/atmel_mci.c @@ -1,6 +1,9 @@ /* * Copyright (C) 2004-2006 Atmel Corporation * + * Copyright (C) 2009 + * Albin Tonnerre, Free-Electrons <[email protected]> + * * See file CREDITS for list of people who contributed to this * project. * @@ -38,40 +41,43 @@ #define pr_debug(...) do { } while(0) #endif -#ifndef CONFIG_SYS_MMC_CLK_OD -#define CONFIG_SYS_MMC_CLK_OD 150000 -#endif - -#ifndef CONFIG_SYS_MMC_CLK_PP -#define CONFIG_SYS_MMC_CLK_PP 5000000 -#endif - -#ifndef CONFIG_SYS_MMC_OP_COND -#define CONFIG_SYS_MMC_OP_COND 0x00100000 -#endif - -#define MMC_DEFAULT_BLKLEN 512 -#define MMC_DEFAULT_RCA 1 +#define RESP_NO_CRC 1 +#define RESP_48BITS MMCI_BF(RSPTYP, 1) +#define RESP_136BITS MMCI_BF(RSPTYP, 2) +#define RESP_48BITS_NOCRC (RESP_48BITS | RESP_NO_CRC) +#define NID MMCI_BF(MAXLAT, 0) +#define NCR MMCI_BF(MAXLAT, 1) +#define TRCMD_START MMCI_BF(TRCMD, 1) +#define TRCMD_STOP MMCI_BF(TRCMD, 2) +#define TRDIR_READ MMCI_BF(TRDIR, 1) +#define TRTYP_BLOCK MMCI_BF(TRTYP, 0) + +#define ERROR_FLAGS (MMCI_BIT(DCRCE) \ + | MMCI_BIT(RDIRE) \ + | MMCI_BIT(RENDE) \ + | MMCI_BIT(RINDE) \ + | MMCI_BIT(RTOE)) -static unsigned int mmc_rca; -static int mmc_card_is_sd; -static block_dev_desc_t mmc_blkdev; +struct atmel_mci_host { + struct mmc *mmc; + struct mmc_cmd *cmd; + struct mmc_data *data; + u32 dtor; +}; -block_dev_desc_t *mmc_get_dev(int dev) -{ - return &mmc_blkdev; -} +static struct atmel_mci_host atmel_mci_host; +static struct atmel_mci_host *host = &atmel_mci_host; -static void mci_set_mode(unsigned long hz, unsigned long blklen) +static void atmel_mci_set_clk_rate(unsigned long hz) { unsigned long bus_hz; unsigned long clkdiv; + u32 mr; bus_hz = get_mci_clk_rate(); clkdiv = (bus_hz / hz) / 2 - 1; - pr_debug("mmc: setting clock %lu Hz, block size %lu\n", - hz, blklen); + pr_debug("mmc: setting clock %lu Hz\n", hz); if (clkdiv & ~255UL) { clkdiv = 255; @@ -79,34 +85,22 @@ static void mci_set_mode(unsigned long hz, unsigned long blklen) hz); } - blklen &= 0xfffc; - mmci_writel(MR, (MMCI_BF(CLKDIV, clkdiv) - | MMCI_BF(BLKLEN, blklen) - | MMCI_BIT(RDPROOF) - | MMCI_BIT(WRPROOF))); + mr = mmci_readl(MR); + mmci_writel(MR, MMCI_BFINS(CLKDIV, clkdiv, mr)); } -#define RESP_NO_CRC 1 -#define R1 MMCI_BF(RSPTYP, 1) -#define R2 MMCI_BF(RSPTYP, 2) -#define R3 (R1 | RESP_NO_CRC) -#define R6 R1 -#define NID MMCI_BF(MAXLAT, 0) -#define NCR MMCI_BF(MAXLAT, 1) -#define TRCMD_START MMCI_BF(TRCMD, 1) -#define TRDIR_READ MMCI_BF(TRDIR, 1) -#define TRTYP_BLOCK MMCI_BF(TRTYP, 0) -#define INIT_CMD MMCI_BF(SPCMD, 1) -#define OPEN_DRAIN MMCI_BF(OPDCMD, 1) - -#define ERROR_FLAGS (MMCI_BIT(DTOE) \ - | MMCI_BIT(RDIRE) \ - | MMCI_BIT(RENDE) \ - | MMCI_BIT(RINDE) \ - | MMCI_BIT(RTOE)) + +static void atmel_mci_set_blklen(unsigned long blklen) +{ + u32 mr; + + blklen &= 0xfffc; + mr = mmci_readl(MR); + mmci_writel(MR, MMCI_BFINS(BLKLEN, blklen, mr)); +} static int -mmc_cmd(unsigned long cmd, unsigned long arg, +atmel_mci_mmc_cmd(unsigned long cmd, unsigned long arg, void *resp, unsigned long flags) { unsigned long *response = resp; @@ -140,7 +134,7 @@ mmc_cmd(unsigned long cmd, unsigned long arg, if (status & error_flags) { printf("mmc: command %lu failed (status: 0x%08x)\n", cmd, status); - return -EIO; + return status; } if (response_words) @@ -155,379 +149,261 @@ mmc_cmd(unsigned long cmd, unsigned long arg, return 0; } -static int mmc_acmd(unsigned long cmd, unsigned long arg, - void *resp, unsigned long flags) -{ - unsigned long aresp[4]; - int ret; - - /* - * Seems like the APP_CMD part of an ACMD has 64 cycles max - * latency even though the ACMD part doesn't. This isn't - * entirely clear in the SD Card spec, but some cards refuse - * to work if we attempt to use 5 cycles max latency here... - */ - ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp, - R1 | NCR | (flags & OPEN_DRAIN)); - if (ret) - return ret; - if ((aresp[0] & (R1_ILLEGAL_COMMAND | R1_APP_CMD)) != R1_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) +/* + * Trying to set the timeout in DTOR is useless here. On AT91, a hardware + * issue prevents the DTOE flag from being raised. On AT32P, DTOE won't + * raise for blocks smaller than 5 bytes, which might be an issue when + * doing writes. Just using a software timeout in all cases looks like + * the most reasonable solution. + */ +static u32 atmel_mci_calc_data_timeout(struct mmc *mmc) { - int ret, i = 0; - unsigned long resp[4]; - unsigned long card_status, data; - unsigned long wordcount; - u32 *p = buffer; - u32 status; - - if (blkcnt == 0) - return 0; + struct mmc_csd *csd = (struct mmc_csd *) mmc->csd; - pr_debug("mmc_bread: dev %d, start %lx, blkcnt %lx\n", - dev, start, blkcnt); - - /* Put the device into Transfer state */ - ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, R1 | NCR); - if (ret) goto out; - - /* Set block length */ - ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, R1 | NCR); - if (ret) goto out; + static const unsigned int dtomul_to_shift[] = { + 0, 4, 7, 8, 10, 12, 16, 20, + }; + static const unsigned int taac_exp[] = { + 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, + }; + static const unsigned int taac_mant[] = { + 0, 10, 12, 13, 15, 60, 25, 30, + 35, 40, 45, 50, 55, 60, 70, 80, + }; + unsigned int timeout_ns, timeout_clks; + unsigned int e, m; + unsigned int dtocyc, dtomul; + unsigned int shift; - pr_debug("MCI_DTOR = %08lx\n", mmci_readl(DTOR)); + e = csd->taac & 0x07; + m = (csd->taac >> 3) & 0x0f; - for (i = 0; i < blkcnt; i++, start++) { - ret = mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK, - start * mmc_blkdev.blksz, resp, - (R1 | NCR | TRCMD_START | TRDIR_READ - | TRTYP_BLOCK)); - if (ret) goto out; + timeout_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; + timeout_clks = csd->nsac * 100; - ret = -EIO; - wordcount = 0; - do { - do { - status = mmci_readl(SR); - if (status & (ERROR_FLAGS | MMCI_BIT(OVRE))) - goto read_error; - } while (!(status & MMCI_BIT(RXRDY))); - - if (status & MMCI_BIT(RXRDY)) { - data = mmci_readl(RDR); - /* pr_debug("%x\n", data); */ - *p++ = data; - wordcount++; - } - } while(wordcount < (mmc_blkdev.blksz / 4)); - - pr_debug("mmc: read %u words, waiting for BLKE\n", wordcount); + timeout_clks += (((timeout_ns + 9) / 10) + * ((mmc->clock + 99999) / 100000) + 9999) / 10000; + if (IS_SD(mmc)) + timeout_clks *= 10; + else + timeout_clks *= 100; - do { - status = mmci_readl(SR); - } while (!(status & MMCI_BIT(BLKE))); + dtocyc = timeout_clks; + dtomul = 0; + shift = 0; + while (dtocyc > 15 && dtomul < 8) { + dtomul++; + shift = dtomul_to_shift[dtomul]; + dtocyc = (timeout_clks + (1 << shift) - 1) >> shift; + } - putc('.'); + if (dtomul >= 8) { + dtomul = 7; + dtocyc = 15; + puts("Warning: Using maximum data timeout\n"); } -out: - /* Put the device back into Standby state */ - mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, NCR); - return i; + pr_debug("mmc: Using %u cycles data timeout\n", dtocyc); -read_error: - mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, R1 | NCR); - printf("mmc: bread failed, status = %08x, card status = %08lx\n", - status, card_status); - goto out; + return dtomul * (dtocyc << shift); } -static void mmc_parse_cid(struct mmc_cid *cid, unsigned long *resp) +static void atmel_mci_finish_request(struct atmel_mci_host *host, + struct mmc_cmd *cmd, struct mmc_data *data) { - 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; + host->cmd = NULL; + host->data = NULL; } -static void sd_parse_cid(struct mmc_cid *cid, unsigned long *resp) +static int atmel_mci_finish_data(struct atmel_mci_host *host, unsigned int stat) { - 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; -} + int data_error = 0; + if (stat & ERROR_FLAGS) { + printf("request failed. status: 0x%08x\n", + stat); + if (stat & MMCI_BIT(DCRCE)) { + data_error = -EILSEQ; + } else if (stat & MMCI_BIT(DTOE)) { + data_error = TIMEOUT; + } else { + data_error = -EIO; + } + } -static void mmc_dump_cid(const struct mmc_cid *cid) -{ - 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); + host->data = NULL; + return data_error; } -static void mmc_dump_csd(const struct mmc_csd *csd) +static int atmel_mci_pull(struct atmel_mci_host *host, void *_buf, int bytes) { - unsigned long *csd_raw = (unsigned long *)csd; - printf("CSD data: %08lx %08lx %08lx %08lx\n", - csd_raw[0], csd_raw[1], csd_raw[2], csd_raw[3]); - printf("CSD structure version: 1.%u\n", csd->csd_structure); - printf("MMC System Spec version: %u\n", csd->spec_vers); - printf("Card command classes: %03x\n", csd->ccc); - printf("Read block length: %u\n", 1 << csd->read_bl_len); - if (csd->read_bl_partial) - puts("Supports partial reads\n"); - else - puts("Does not support partial reads\n"); - printf("Write block length: %u\n", 1 << csd->write_bl_len); - if (csd->write_bl_partial) - puts("Supports partial writes\n"); - else - puts("Does not support partial writes\n"); - if (csd->wp_grp_enable) - printf("Supports group WP: %u\n", csd->wp_grp_size + 1); - else - puts("Does not support group WP\n"); - printf("Card capacity: %u bytes\n", - (csd->c_size + 1) * (1 << (csd->c_size_mult + 2)) * - (1 << csd->read_bl_len)); - printf("File format: %u/%u\n", - csd->file_format_grp, csd->file_format); - puts("Write protection: "); - if (csd->perm_write_protect) - puts(" permanent"); - if (csd->tmp_write_protect) - puts(" temporary"); - putc('\n'); + unsigned int stat; + u32 timeout = 0; + u32 delay, status; + u32 *buf = _buf; + + delay = host->dtor / (get_mci_clk_rate() / 1000000); + while (bytes > 3) { + do { + status = mmci_readl(SR); + if (status & MMCI_BIT(RXRDY)) + break; + udelay(delay / 1000); + timeout += delay / 1000; + } while (timeout < delay); + if(timeout > delay) + return MMCI_BIT(DTOE); + *buf++ = mmci_readl(RDR); + bytes -= 4; + } + + while(mmci_readl(SR) & MMCI_BIT(DTIP)); + return 0; } -static int mmc_idle_cards(void) +static int atmel_mci_transfer_data(struct atmel_mci_host *host) { - int ret; + struct mmc_data *data = host->data; + int stat; + unsigned long length; - /* Reset and initialize all cards */ - ret = mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0); - if (ret) - return ret; + length = data->blocks * data->blocksize; - /* Keep the bus idle for 74 clock cycles */ - return mmc_cmd(0, 0, NULL, INIT_CMD); + if (data->flags & MMC_DATA_READ) { + stat = atmel_mci_pull(host, data->dest, length); + if (stat) + return stat; + } + else + return -EINVAL; + return 0; } -static int sd_init_card(struct mmc_cid *cid, int verbose) +static int atmel_mci_cmd_done(struct atmel_mci_host *host, unsigned int stat) { - 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, R3 | NID); - if (ret || (resp[0] & 0x80000000)) - break; - ret = -ETIMEDOUT; - } + int datastat; + int ret; - if (ret) - return ret; + if(stat & MMCI_BIT(RTOE)) + ret = TIMEOUT; + else + ret = stat; - ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID); - if (ret) + if (ret) { + atmel_mci_finish_request(host, host->cmd, host->data); 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, R6 | NCR); - if (ret) - return ret; + if (!host->data) { + atmel_mci_finish_request(host, host->cmd, host->data); + return 0; + } - mmc_rca = resp[0] >> 16; - if (verbose) - printf("SD Card detected (RCA %u)\n", mmc_rca); - mmc_card_is_sd = 1; - return 0; + datastat = atmel_mci_transfer_data(host); + ret = atmel_mci_finish_data(host, datastat); + atmel_mci_finish_request(host, host->cmd, host->data); + return ret; } -static int mmc_init_card(struct mmc_cid *cid, int verbose) +static void atmel_mci_setup_data(struct atmel_mci_host *host, struct mmc_data *data) { - 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, - R3 | NID | OPEN_DRAIN); - if (ret || (resp[0] & 0x80000000)) - break; - ret = -ETIMEDOUT; - } - - if (ret) - return ret; + host->data = data; + atmel_mci_set_blklen(data->blocksize); +} - /* Get CID of all cards. FIXME: Support more than one card */ - ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID | OPEN_DRAIN); - if (ret) - return ret; - mmc_parse_cid(cid, resp); - if (verbose) - mmc_dump_cid(cid); +static int atmel_mci_request(struct mmc *mmc, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + u32 flags = 0; + int ret; + struct atmel_mci_host *host = mmc->priv; + + host->cmd = cmd; + host->mmc = mmc; + + /* Only set the timeout once, when we know we have read the CSD */ + if(!host->dtor && mmc->capacity) + host->dtor = atmel_mci_calc_data_timeout(mmc); + + switch (cmd->resp_type) { + case MMC_RSP_R1: /* short CRC, OPCODE */ + case MMC_RSP_R1b:/* short CRC, OPCODE, BUSY */ + flags |= RESP_48BITS; + break; + case MMC_RSP_R2: /* long 136 bit + CRC */ + flags |= RESP_136BITS; + break; + case MMC_RSP_R3: /* short */ + flags |= RESP_48BITS_NOCRC; + break; + case MMC_RSP_NONE: + break; + default: + printf("atmel_mci: unhandled response type 0x%x\n", + cmd->resp_type); + return -EINVAL; + } + flags |= NCR; - /* Set Relative Address of the card that responded */ - ret = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, mmc_rca << 16, resp, - R1 | NCR | OPEN_DRAIN); - return ret; + if(data) { + atmel_mci_setup_data(host, data); + flags |= TRCMD_START | TRDIR_READ | TRTYP_BLOCK; + } + ret = atmel_mci_mmc_cmd(cmd->cmdidx, cmd->cmdarg, cmd->response, cmd->flags | flags); + return atmel_mci_cmd_done(host, ret); } -static void mci_set_data_timeout(struct mmc_csd *csd) +static void atmel_mci_set_ios(struct mmc *mmc) { - static const unsigned int dtomul_to_shift[] = { - 0, 4, 7, 8, 10, 12, 16, 20, - }; - static const unsigned int taac_exp[] = { - 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, - }; - static const unsigned int taac_mant[] = { - 0, 10, 12, 13, 15, 60, 25, 30, - 35, 40, 45, 50, 55, 60, 70, 80, - }; - unsigned int timeout_ns, timeout_clks; - unsigned int e, m; - unsigned int dtocyc, dtomul; - unsigned int shift; - u32 dtor; + u32 sdcr; + struct atmel_mci_host *host = mmc->priv; - e = csd->taac & 0x07; - m = (csd->taac >> 3) & 0x0f; + if(mmc->clock) + atmel_mci_set_clk_rate(mmc->clock); + sdcr = mmci_readl(SDCR); - timeout_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; - timeout_clks = csd->nsac * 100; - - timeout_clks += (((timeout_ns + 9) / 10) - * ((CONFIG_SYS_MMC_CLK_PP + 99999) / 100000) + 9999) / 10000; - if (!mmc_card_is_sd) - timeout_clks *= 10; + if(mmc->bus_width == 4) + sdcr |= MMCI_BIT(SCDBUS); else - timeout_clks *= 100; - - dtocyc = timeout_clks; - dtomul = 0; - shift = 0; - while (dtocyc > 15 && dtomul < 8) { - dtomul++; - shift = dtomul_to_shift[dtomul]; - dtocyc = (timeout_clks + (1 << shift) - 1) >> shift; - } + sdcr &= ~MMCI_BIT(SCDBUS); - if (dtomul >= 8) { - dtomul = 7; - dtocyc = 15; - puts("Warning: Using maximum data timeout\n"); - } + mmci_writel(SDCR, sdcr); +} - dtor = (MMCI_BF(DTOMUL, dtomul) - | MMCI_BF(DTOCYC, dtocyc)); - mmci_writel(DTOR, dtor); +static int atmel_mci_mmc_init(struct mmc *mmc) +{ + mmci_writel(CR, MMCI_BIT(SWRST)); + mmci_writel(MR, MMCI_BIT(RDPROOF) | MMCI_BIT(WRPROOF)); + atmel_mci_set_clk_rate(mmc->f_min); - printf("mmc: Using %u cycles data timeout (DTOR=0x%x)\n", - dtocyc << shift, dtor); + return 0; } -int mmc_legacy_init(int verbose) +int atmel_mci_init(bd_t *bis) { - struct mmc_cid cid; - struct mmc_csd csd; - unsigned int max_blksz; - int ret; + struct mmc *mmc = NULL; + + mmc = calloc(1, sizeof(struct mmc)); + if (!mmc) + return -ENOMEM; - /* Initialize controller */ - mmci_writel(CR, MMCI_BIT(SWRST)); mmci_writel(CR, MMCI_BIT(MCIEN)); mmci_writel(DTOR, 0x5f); mmci_writel(IDR, ~0UL); - mci_set_mode(CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN); - - 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; + sprintf(mmc->name, "ATMEL MCI"); + mmc->send_cmd = atmel_mci_request; + mmc->set_ios = atmel_mci_set_ios; + mmc->init = atmel_mci_mmc_init; + mmc->host_caps = MMC_MODE_4BIT; - /* Get CSD from the card */ - ret = mmc_cmd(MMC_CMD_SEND_CSD, mmc_rca << 16, &csd, R2 | NCR); - if (ret) - return ret; - if (verbose) - mmc_dump_csd(&csd); - - mci_set_data_timeout(&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; - sprintf((char *)mmc_blkdev.vendor, - "Man %02x%04x Snr %08lx", - cid.mid, cid.oid, cid.psn); - strncpy((char *)mmc_blkdev.product, cid.pnm, - sizeof(mmc_blkdev.product)); - sprintf((char *)mmc_blkdev.revision, "%x %x", - cid.prv >> 4, cid.prv & 0x0f); - - /* - * If we can't use 512 byte blocks, refuse to deal with the - * card. Tons of code elsewhere seems to depend on this. - */ - max_blksz = 1 << csd.read_bl_len; - if (max_blksz < 512 || (max_blksz > 512 && !csd.read_bl_partial)) { - printf("Card does not support 512 byte reads, aborting.\n"); - return -ENODEV; - } - mmc_blkdev.blksz = 512; - mmc_blkdev.lba = (csd.c_size + 1) * (1 << (csd.c_size_mult + 2)); + mmc->voltages = MMC_VDD_32_33; - mci_set_mode(CONFIG_SYS_MMC_CLK_PP, mmc_blkdev.blksz); + mmc->f_min = 150000; + mmc->f_max = 5000000; -#if 0 - if (fat_register_device(&mmc_blkdev, 1)) - printf("Could not register MMC fat device\n"); -#else - init_part(&mmc_blkdev); -#endif + mmc->priv = host; + host->mmc = mmc; + mmc_register(mmc); return 0; } -- 1.6.0.4 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
