diff options
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 92 |
1 files changed, 68 insertions, 24 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 44a4feb..1eb9c27 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -159,7 +159,7 @@ int mmc_set_blocklen(struct mmc *mmc, int len) { struct mmc_cmd cmd; - if (mmc->card_caps & MMC_MODE_DDR_52MHz) + if (mmc->ddr_mode) return 0; cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; @@ -486,7 +486,7 @@ static int mmc_change_freq(struct mmc *mmc) char cardtype; int err; - mmc->card_caps = 0; + mmc->card_caps = MMC_MODE_4BIT | MMC_MODE_8BIT; if (mmc_host_is_spi(mmc)) return 0; @@ -519,7 +519,7 @@ static int mmc_change_freq(struct mmc *mmc) /* High Speed is set, there are two types: 52MHz and 26MHz */ if (cardtype & EXT_CSD_CARD_TYPE_52) { - if (cardtype & EXT_CSD_CARD_TYPE_DDR_52) + if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V) mmc->card_caps |= MMC_MODE_DDR_52MHz; mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; } else { @@ -1001,6 +1001,9 @@ static int mmc_startup(struct mmc *mmc) case 6: mmc->version = MMC_VERSION_4_5; break; + case 7: + mmc->version = MMC_VERSION_5_0; + break; } /* @@ -1022,6 +1025,21 @@ static int mmc_startup(struct mmc *mmc) mmc->erase_grp_size = ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * MMC_MAX_BLOCK_LEN * 1024; + /* + * if high capacity and partition setting completed + * SEC_COUNT is valid even if it is smaller than 2 GiB + * JEDEC Standard JESD84-B45, 6.2.4 + */ + if (mmc->high_capacity && + (ext_csd[EXT_CSD_PARTITION_SETTING] & + EXT_CSD_PARTITION_SETTING_COMPLETED)) { + capacity = (ext_csd[EXT_CSD_SEC_CNT]) | + (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | + (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | + (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); + capacity *= MMC_MAX_BLOCK_LEN; + mmc->capacity_user = capacity; + } } else { /* Calculate the group size from the csd value. */ int erase_gsz, erase_gmul; @@ -1103,8 +1121,10 @@ static int mmc_startup(struct mmc *mmc) /* An array to map CSD bus widths to host cap bits */ static unsigned ext_to_hostcaps[] = { - [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz, - [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz, + [EXT_CSD_DDR_BUS_WIDTH_4] = + MMC_MODE_DDR_52MHz | MMC_MODE_4BIT, + [EXT_CSD_DDR_BUS_WIDTH_8] = + MMC_MODE_DDR_52MHz | MMC_MODE_8BIT, [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, }; @@ -1116,13 +1136,13 @@ static int mmc_startup(struct mmc *mmc) for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { unsigned int extw = ext_csd_bits[idx]; + unsigned int caps = ext_to_hostcaps[extw]; /* - * Check to make sure the controller supports - * this bus width, if it's more than 1 + * Check to make sure the card and controller support + * these capabilities */ - if (extw != EXT_CSD_BUS_WIDTH_1 && - !(mmc->cfg->host_caps & ext_to_hostcaps[extw])) + if ((mmc->card_caps & caps) != caps) continue; err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, @@ -1131,26 +1151,33 @@ static int mmc_startup(struct mmc *mmc) if (err) continue; + mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0; mmc_set_bus_width(mmc, widths[idx]); err = mmc_send_ext_csd(mmc, test_csd); + + if (err) + continue; + /* Only compare read only fields */ - if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ - == test_csd[EXT_CSD_PARTITIONING_SUPPORT] - && ext_csd[EXT_CSD_HC_WP_GRP_SIZE] \ - == test_csd[EXT_CSD_HC_WP_GRP_SIZE] \ - && ext_csd[EXT_CSD_REV] \ - == test_csd[EXT_CSD_REV] - && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ - == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] - && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ - &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { - - mmc->card_caps |= ext_to_hostcaps[extw]; + if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] + == test_csd[EXT_CSD_PARTITIONING_SUPPORT] && + ext_csd[EXT_CSD_HC_WP_GRP_SIZE] + == test_csd[EXT_CSD_HC_WP_GRP_SIZE] && + ext_csd[EXT_CSD_REV] + == test_csd[EXT_CSD_REV] && + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] + == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] && + memcmp(&ext_csd[EXT_CSD_SEC_CNT], + &test_csd[EXT_CSD_SEC_CNT], 4) == 0) break; - } + else + err = SWITCH_ERR; } + if (err) + return err; + if (mmc->card_caps & MMC_MODE_HS) { if (mmc->card_caps & MMC_MODE_HS_52MHz) mmc->tran_speed = 52000000; @@ -1161,6 +1188,12 @@ static int mmc_startup(struct mmc *mmc) mmc_set_clock(mmc, mmc->tran_speed); + /* Fix the block length for DDR mode */ + if (mmc->ddr_mode) { + mmc->read_bl_len = MMC_MAX_BLOCK_LEN; + mmc->write_bl_len = MMC_MAX_BLOCK_LEN; + } + /* fill in device description */ mmc->block_dev.lun = 0; mmc->block_dev.type = 0; @@ -1277,6 +1310,11 @@ block_dev_desc_t *mmc_get_dev(int dev) } #endif +/* board-specific MMC power initializations. */ +__weak void board_mmc_power_init(void) +{ +} + int mmc_start_init(struct mmc *mmc) { int err; @@ -1293,12 +1331,15 @@ int mmc_start_init(struct mmc *mmc) if (mmc->has_init) return 0; + board_mmc_power_init(); + /* made sure it's not NULL earlier */ err = mmc->cfg->ops->init(mmc); if (err) return err; + mmc->ddr_mode = 0; mmc_set_bus_width(mmc, 1); mmc_set_clock(mmc, 1); @@ -1401,8 +1442,11 @@ void print_mmc_devices(char separator) printf("%s: %d", m->cfg->name, m->block_dev.dev); - if (entry->next != &mmc_devices) - printf("%c ", separator); + if (entry->next != &mmc_devices) { + printf("%c", separator); + if (separator != '\n') + puts (" "); + } } printf("\n"); |