leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: atmel-mci: fix multiblock SDIO transfers

Browse Source 
Based on report made by Yauhen in:
"MMC: Fix multiblock SDIO transfers in AT91 MCI" patch,
I report those changes to the brother driver: atmel-mci.

So, this patch sets SDIO transfer types: SDIO block and SDIO byte
transfers instead of using ordinary MMC block transfers.
It is checking opcode for SDIO CMD53 and setting transfer
type in MCI_CMDR register properly.

Reported-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>
This commit is contained in:
Nicolas Ferre 2010-12-10 19:14:32 +01:00 committed by Chris Ball
parent a2255ff451
commit 2f1d791882
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/mmc/host/atmel-mci.c
View File

@ -26,6 +26,7 @@
#include <linux/stat.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio.h>
#include <mach/atmel-mci.h>
#include <linux/atmel-mci.h>
@ -532,12 +533,17 @@ static u32 atmci_prepare_command(struct mmc_host *mmc,
data = cmd->data;
if (data) {
cmdr |= MCI_CMDR_START_XFER;
if (data->flags & MMC_DATA_STREAM)
cmdr |= MCI_CMDR_STREAM;
else if (data->blocks > 1)
cmdr |= MCI_CMDR_MULTI_BLOCK;
else
cmdr |= MCI_CMDR_BLOCK;
if (cmd->opcode == SD_IO_RW_EXTENDED) {
cmdr |= MCI_CMDR_SDIO_BLOCK;
} else {
if (data->flags & MMC_DATA_STREAM)
cmdr |= MCI_CMDR_STREAM;
else if (data->blocks > 1)
cmdr |= MCI_CMDR_MULTI_BLOCK;
else
cmdr |= MCI_CMDR_BLOCK;
}
if (data->flags & MMC_DATA_READ)
cmdr |= MCI_CMDR_TRDIR_READ;