diff mbox

[037/177] sdhci: 8-bit data transfer width support

Message ID 201008110101.o7B11i0s027055@imap1.linux-foundation.org (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Andrew Morton Aug. 11, 2010, 1:01 a.m. UTC 
None
diff mbox

Patch

diff -puN drivers/mmc/host/sdhci.c~sdhci-8-bit-data-transfer-width-support drivers/mmc/host/sdhci.c
--- a/drivers/mmc/host/sdhci.c~sdhci-8-bit-data-transfer-width-support
+++ a/drivers/mmc/host/sdhci.c
@@ -1159,6 +1159,11 @@  static void sdhci_set_ios(struct mmc_hos
 
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 
+	if (ios->bus_width == MMC_BUS_WIDTH_8)
+		ctrl |= SDHCI_CTRL_8BITBUS;
+	else
+		ctrl &= ~SDHCI_CTRL_8BITBUS;
+
 	if (ios->bus_width == MMC_BUS_WIDTH_4)
 		ctrl |= SDHCI_CTRL_4BITBUS;
 	else
diff -puN drivers/mmc/host/sdhci.h~sdhci-8-bit-data-transfer-width-support drivers/mmc/host/sdhci.h
--- a/drivers/mmc/host/sdhci.h~sdhci-8-bit-data-transfer-width-support
+++ a/drivers/mmc/host/sdhci.h
@@ -72,6 +72,7 @@ 
 #define   SDHCI_CTRL_ADMA1	0x08
 #define   SDHCI_CTRL_ADMA32	0x10
 #define   SDHCI_CTRL_ADMA64	0x18
+#define  SDHCI_CTRL_8BITBUS	0x20
 
 #define SDHCI_POWER_CONTROL	0x29
 #define  SDHCI_POWER_ON		0x01