1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 7cb057f3f883..cf6a6545240b 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -276,6 +276,40 @@ config MMC_S3C
 
           If unsure, say N.
 
+choice
+        prompt "Samsung S3C SD/MMC transfer code"
+        depends on MMC_S3C
+
+config MMC_S3C_PIO
+        bool "Use PIO transfers only"
+        help
+          Use PIO to transfer data between memory and the hardware.
+
+          PIO is slower than DMA as it requires CPU instructions to
+          move the data. This has been the traditional default for
+          the S3C MCI driver.
+
+config MMC_S3C_DMA
+        bool "Use DMA transfers only (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        help
+          Use DMA to transfer data between memory and the hardare.
+
+          Currently, the DMA support in this driver seems to not be
+          working properly and needs to be debugged before this
+          option is useful.
+
+config MMC_S3C_PIODMA
+        bool "Support for both PIO and DMA (EXPERIMENTAL)"
+        help
+          Compile both the PIO and DMA transfer routines into the
+          driver and let the platform select at run-time which one
+          is best.
+
+          See notes for the DMA option.
+
+endchoice
+
 config MMC_SDRICOH_CS
         tristate "MMC/SD driver for Ricoh Bay1Controllers (EXPERIMENTAL)"
         depends on EXPERIMENTAL && PCI && PCMCIA