mmc: atmel-mci: fix multiblock SDIO transfers
Nicolas Ferre [Fri, 10 Dec 2010 18:14:32 +0000 (19:14 +0100)]
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>

drivers/mmc/host/atmel-mci.c

index 301351a..ad2a7a0 100644 (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;