diff options
| author | Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> | 2011-03-09 10:58:13 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 16:07:36 +0200 |
| commit | ca61837efd38db7524e2401d8d36a08cb91832d2 (patch) | |
| tree | f9de94b3484d9949eb808a45ea97e99ef41f73cb /drivers/mmc/core/sdio_ops.c | |
| parent | 62cd1e18800d295bfba950172bf8f9d6e8ac04c9 (diff) | |
mmc: sdio: Workaround for dev with broken CMD53
Adds a quirk which can be turned on for SDIO devices
that do not support 512 byte requests in byte mode during
CMD53. These requests will always be sent in block mode
instead.
This patch also enables this quirk for ST-Ericsson
CW1200 WLAN device.
Change-Id: Id31787fcbfeb0b97ba2e8c583e9363a7c08811d2
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30931
Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Diffstat (limited to 'drivers/mmc/core/sdio_ops.c')
| -rw-r--r-- | drivers/mmc/core/sdio_ops.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index f087d876c57..bcef326639f 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -144,8 +144,11 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, cmd.arg |= fn << 28; cmd.arg |= incr_addr ? 0x04000000 : 0x00000000; cmd.arg |= addr << 9; - if (blocks == 1 && blksz <= 512) - cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */ + if (blocks == 1 && blksz < 512) + cmd.arg |= blksz; /* byte mode */ + else if (blocks == 1 && blksz == 512 && + !(mmc_card_broken_byte_mode_512(card))) + cmd.arg |= 0; /* byte mode, 0==512 */ else cmd.arg |= 0x08000000 | blocks; /* block mode */ cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; |