diff options
Diffstat (limited to 'drivers/mmc/host/Kconfig')
| -rw-r--r-- | drivers/mmc/host/Kconfig | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 7cb057f3f88..cf6a6545240 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 |