diff options
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 93 |
1 files changed, 73 insertions, 20 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index e8bc4b869..e8d61c307 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -117,7 +117,10 @@ mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) return 0; } - if (blkcnt > 1) { + /* 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; @@ -279,7 +282,8 @@ sd_send_op_cond(struct mmc *mmc) * how to manage low voltages SD card is not yet * specified. */ - cmd.cmdarg = mmc->voltages & 0xff8000; + cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : + (mmc->voltages & 0xff8000); if (mmc->version == SD_VERSION_2) cmd.cmdarg |= OCR_HCS; @@ -298,6 +302,18 @@ sd_send_op_cond(struct mmc *mmc) if (mmc->version != SD_VERSION_2) mmc->version = SD_VERSION_1_0; + if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ + cmd.cmdidx = MMC_CMD_SPI_READ_OCR; + cmd.resp_type = MMC_RSP_R3; + cmd.cmdarg = 0; + cmd.flags = 0; + + err = mmc_send_cmd(mmc, &cmd, NULL); + + if (err) + return err; + } + mmc->ocr = cmd.response[0]; mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); @@ -318,7 +334,8 @@ int mmc_send_op_cond(struct mmc *mmc) do { cmd.cmdidx = MMC_CMD_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; - cmd.cmdarg = OCR_HCS | mmc->voltages; + cmd.cmdarg = OCR_HCS | (mmc_host_is_spi(mmc) ? 0 : + mmc->voltages); cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); @@ -332,6 +349,18 @@ int mmc_send_op_cond(struct mmc *mmc) if (timeout <= 0) return UNUSABLE_ERR; + if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ + cmd.cmdidx = MMC_CMD_SPI_READ_OCR; + cmd.resp_type = MMC_RSP_R3; + cmd.cmdarg = 0; + cmd.flags = 0; + + err = mmc_send_cmd(mmc, &cmd, NULL); + + if (err) + return err; + } + mmc->version = MMC_VERSION_UNKNOWN; mmc->ocr = cmd.response[0]; @@ -387,6 +416,9 @@ int mmc_change_freq(struct mmc *mmc) mmc->card_caps = 0; + if (mmc_host_is_spi(mmc)) + return 0; + /* Only version 4 supports high-speed */ if (mmc->version < MMC_VERSION_4) return 0; @@ -460,6 +492,9 @@ int sd_change_freq(struct mmc *mmc) mmc->card_caps = 0; + if (mmc_host_is_spi(mmc)) + return 0; + /* Read the SCR to find out if this card supports higher speeds */ cmd.cmdidx = MMC_CMD_APP_CMD; cmd.resp_type = MMC_RSP_R1; @@ -610,8 +645,22 @@ int mmc_startup(struct mmc *mmc) struct mmc_cmd cmd; char ext_csd[512]; +#ifdef CONFIG_MMC_SPI_CRC_ON + if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ + cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; + cmd.resp_type = MMC_RSP_R1; + cmd.cmdarg = 1; + cmd.flags = 0; + err = mmc_send_cmd(mmc, &cmd, NULL); + + if (err) + return err; + } +#endif + /* Put the Card in Identify Mode */ - cmd.cmdidx = MMC_CMD_ALL_SEND_CID; + cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : + MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ cmd.resp_type = MMC_RSP_R2; cmd.cmdarg = 0; cmd.flags = 0; @@ -628,18 +677,20 @@ int mmc_startup(struct mmc *mmc) * For SD cards, get the Relatvie Address. * This also puts the cards into Standby State */ - cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; - cmd.cmdarg = mmc->rca << 16; - cmd.resp_type = MMC_RSP_R6; - cmd.flags = 0; + if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ + cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; + cmd.cmdarg = mmc->rca << 16; + cmd.resp_type = MMC_RSP_R6; + cmd.flags = 0; - err = mmc_send_cmd(mmc, &cmd, NULL); + err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) - return err; + if (err) + return err; - if (IS_SD(mmc)) - mmc->rca = (cmd.response[0] >> 16) & 0xffff; + if (IS_SD(mmc)) + mmc->rca = (cmd.response[0] >> 16) & 0xffff; + } /* Get the Card-Specific Data */ cmd.cmdidx = MMC_CMD_SEND_CSD; @@ -715,14 +766,16 @@ int mmc_startup(struct mmc *mmc) mmc->write_bl_len = 512; /* Select the card, and put it into Transfer Mode */ - cmd.cmdidx = MMC_CMD_SELECT_CARD; - cmd.resp_type = MMC_RSP_R1b; - cmd.cmdarg = mmc->rca << 16; - cmd.flags = 0; - err = mmc_send_cmd(mmc, &cmd, NULL); + if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ + cmd.cmdidx = MMC_CMD_SELECT_CARD; + cmd.resp_type = MMC_RSP_R1b; + cmd.cmdarg = mmc->rca << 16; + cmd.flags = 0; + err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) - return err; + if (err) + return err; + } if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { /* check ext_csd version and capacity */ |