diff options
| author | Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> | 2011-09-15 17:43:04 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-26 16:32:02 -0400 |
| commit | 9a0da648ff3a5020406ac7784eb3b519014f66f6 (patch) | |
| tree | 54e546b73bbba36a2a3277eb8cde2771595b37a4 /drivers/mmc/core/sdio_ops.c | |
| parent | 329f22371460587c59b866dcbffce5b498b61f38 (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.
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Signed-off-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
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 4addbe987bc9..b0517cc06200 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; |