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sdhci: 8-bit data transfer width support

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Some host controllers such as s5pc110 support the WIDE8 feature.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kyungmin Park
2010-08-10 18:01:43 -07:00
committed by Linus Torvalds
parent cfd1f82f20
commit ae6d6c9221
2 changed files with 6 additions and 0 deletions
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5
drivers/mmc/host/sdhci.c
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@@ -1159,6 +1159,11 @@ 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