sdhci-s3c: Samsung S3C based SDHCI controller glue

Add support for the 'HSMMC' block(s) in the Samsung SoC
line. These are compatible with the SDHCI driver so add
the necessary setup and driver binding for the platform
devices.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 40111a6d8d5b..760992204a5e 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -94,6 +94,31 @@ config MMC_SDHCI_PLTFM
 
           If unsure, say N.
 
+config MMC_SDHCI_S3C
+        tristate "SDHCI support on Samsung S3C SoC"
+        depends on MMC_SDHCI && (PLAT_S3C24XX || PLAT_S3C64XX)
+        help
+          This selects the Secure Digital Host Controller Interface (SDHCI)
+          often referrered to as the HSMMC block in some of the Samsung S3C
+          range of SoC.
+
+          Note, due to the problems with DMA, the DMA support is only
+          available with CONFIG_EXPERIMENTAL is selected.
+
+          If you have a controller with this interface, say Y or M here.
+
+          If unsure, say N.
+
+config MMC_SDHCI_S3C_DMA
+        bool "DMA support on S3C SDHCI"
+        depends on MMC_SDHCI_S3C && EXPERIMENTAL
+        help
+          Enable DMA support on the Samsung S3C SDHCI glue. The DMA
+          has proved to be problematic if the controller encounters
+          certain errors, and thus should be treated with care.
+
+          YMMV.
+
 config MMC_OMAP
         tristate "TI OMAP Multimedia Card Interface support"
         depends on ARCH_OMAP