Le 26/11/2010 12:17, Nicolas Ferre :
> Le 25/11/2010 11:11, Yauhen Kharuzhy :
>> 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 check opcode for SDIO CMD53 and set transfer
>> type in 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 <[email protected]>
>
> Signed-off-by: Nicolas Ferre <[email protected]>
Hi Chris,
A little "ping"!
Do you want that I re-send you the patch with relevant S-O-B lines or
you can include them yourself?
Best regards,
>> ---
>> arch/arm/mach-at91/include/mach/at91_mci.h | 2 ++
>> drivers/mmc/host/at91_mci.c | 13 +++++++++----
>> 2 files changed, 11 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/mach-at91/include/mach/at91_mci.h
>> b/arch/arm/mach-at91/include/mach/at91_mci.h
>> index 57f8ee1..27ac6f5 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 */
>> diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
>> index 591ab54..d3e6a96 100644
>> --- a/drivers/mmc/host/at91_mci.c
>> +++ b/drivers/mmc/host/at91_mci.c
>> @@ -69,6 +69,7 @@
>> #include <linux/highmem.h>
>>
>> #include <linux/mmc/host.h>
>> +#include <linux/mmc/sdio.h>
>>
>> #include <asm/io.h>
>> #include <asm/irq.h>
>> @@ -493,10 +494,14 @@ static void at91_mci_send_command(struct at91mci_host
>> *host, struct mmc_command
>> else if (data->flags & MMC_DATA_WRITE)
>> cmdr |= AT91_MCI_TRCMD_START;
>>
>> - if (data->flags & MMC_DATA_STREAM)
>> - cmdr |= AT91_MCI_TRTYP_STREAM;
>> - if (data->blocks > 1)
>> - cmdr |= AT91_MCI_TRTYP_MULTIPLE;
>> + if (cmd->opcode == SD_IO_RW_EXTENDED) {
>> + cmdr |= AT91_MCI_TRTYP_SDIO_BLOCK;
>> + } else {
>> + if (data->flags & MMC_DATA_STREAM)
>> + cmdr |= AT91_MCI_TRTYP_STREAM;
>> + if (data->blocks > 1)
>> + cmdr |= AT91_MCI_TRTYP_MULTIPLE;
>> + }
>> }
>> else {
>> block_length = 0;
>
>
--
Nicolas Ferre
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