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| author | Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> | 2010-11-25 12:11:51 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2010-12-21 11:46:32 -0800 |
| commit | a2255ff45143001fecbc5e5a4b58fcb999d393ae (patch) | |
| tree | 6f524cb891b60e8c2ce40beba94b6dbb71c9f8bf /arch | |
| parent | 0a59228168d3722b71f8e3dbc623316fb4be78f4 (diff) | |
| download | kernel-mfld-blackbay-a2255ff45143001fecbc5e5a4b58fcb999d393ae.tar.gz kernel-mfld-blackbay-a2255ff45143001fecbc5e5a4b58fcb999d393ae.tar.bz2 kernel-mfld-blackbay-a2255ff45143001fecbc5e5a4b58fcb999d393ae.zip | |
mmc: at91_mci: fix multiblock SDIO transfers
The AT91 MCI has special SDIO transfer types: SDIO block and SDIO byte
transfers, but at91_mci driver doesn't use them and handles all SDIO
transfers as ordinary MMC block transfers. This causes problems for
multiple-block SDIO transfers (in particular for 256-bytes blocks).
Fix this situation by checking the opcode for SDIO CMD53 and setting
the transfer type in the AT91_MCI_CMDR register properly.
This patch was tested with libertas SDIO driver: problem with TX
timeouts on big packets was eliminated.
Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
Cc: <stable@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/at91_mci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/at91_mci.h b/arch/arm/mach-at91/include/mach/at91_mci.h index 57f8ee15494..27ac6f550fe 100644 --- a/arch/arm/mach-at91/include/mach/at91_mci.h +++ b/arch/arm/mach-at91/include/mach/at91_mci.h @@ -74,6 +74,8 @@ #define AT91_MCI_TRTYP_BLOCK (0 << 19) #define AT91_MCI_TRTYP_MULTIPLE (1 << 19) #define AT91_MCI_TRTYP_STREAM (2 << 19) +#define AT91_MCI_TRTYP_SDIO_BYTE (4 << 19) +#define AT91_MCI_TRTYP_SDIO_BLOCK (5 << 19) #define AT91_MCI_BLKR 0x18 /* Block Register */ #define AT91_MCI_BLKR_BCNT(n) ((0xffff & (n)) << 0) /* Block count */ |