From: Kyungmin Park <kyungmin.park(a)samsung.com>
Upstream ae6d6c92212e94b12ab9365c23fb73acc2c3c2e7 commit.
Some host controllers such as s5pc110 support the WIDE8 feature.
Signed-off-by: Kyungmin Park <kyungmin.park(a)samsung.com>
Cc: Grant Likely <grant.likely(a)secretlab.ca>
Cc: <linux-mmc(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
---
drivers/mmc/host/sdhci.c | 5 +++++
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9d4fdfa..dae42aa 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1149,6 +1149,11 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios
*ios)
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 --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 9ba4268..6bd46e5 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/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
--
1.7.1