diff options
| author | Andrei Warkentin <andreiw@motorola.com> | 2011-05-23 15:06:38 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-25 16:49:03 -0400 |
| commit | f0d89972b01798cf9d245dfa1cacfa0ee78a3593 (patch) | |
| tree | a3e69fc95825971384798eac4281148db837f891 | |
| parent | e89d456fcdde2df008c032bf928e69e628e07a28 (diff) | |
mmc: core: Block CMD23 support for UHS104/SDXC cards.
SD cards operating at UHS104 or better support SET_BLOCK_COUNT.
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Reviewed-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/card/block.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/core/sd.c | 2 | ||||
| -rw-r--r-- | include/linux/mmc/card.h | 3 | ||||
| -rw-r--r-- | include/linux/mmc/sd.h | 2 |
4 files changed, 12 insertions, 4 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index a380accaba9a..71da5641e258 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1057,9 +1057,12 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, blk_queue_logical_block_size(md->queue.queue, 512); set_capacity(md->disk, size); - if (mmc_host_cmd23(card->host) && - mmc_card_mmc(card)) - md->flags |= MMC_BLK_CMD23; + if (mmc_host_cmd23(card->host)) { + if (mmc_card_mmc(card) || + (mmc_card_sd(card) && + card->scr.cmds & SD_SCR_CMD23_SUPPORT)) + md->flags |= MMC_BLK_CMD23; + } if (mmc_card_mmc(card) && md->flags & MMC_BLK_CMD23 && diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 596d0b9d30b8..ff2774128aa9 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -203,6 +203,8 @@ static int mmc_decode_scr(struct mmc_card *card) else card->erased_byte = 0x0; + if (scr->sda_spec3) + scr->cmds = UNSTUFF_BITS(resp, 32, 2); return 0; } diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 4a0e27baaea0..c6927a4d157f 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -72,6 +72,9 @@ struct sd_scr { unsigned char bus_widths; #define SD_SCR_BUS_WIDTH_1 (1<<0) #define SD_SCR_BUS_WIDTH_4 (1<<2) + unsigned char cmds; +#define SD_SCR_CMD20_SUPPORT (1<<0) +#define SD_SCR_CMD23_SUPPORT (1<<1) }; struct sd_ssr { diff --git a/include/linux/mmc/sd.h b/include/linux/mmc/sd.h index c648878f6734..7d35d52c3df3 100644 --- a/include/linux/mmc/sd.h +++ b/include/linux/mmc/sd.h @@ -66,7 +66,7 @@ #define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */ #define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */ -#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */ +#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00-3.0X */ /* * SD bus widths |