drivers/mmc 

obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o ...... obj-$(CONFIG_MMC_S3C)    += s3cmci.o 

config MMC_SDHCI_S3C   tristate "SDHCI support on Samsung S3C SoC"   depends on MMC_SDHCI && PLAT_SAMSUNG   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.     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   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_S3C   tristate "Samsung S3C SD/MMC Card Interface support"   depends on ARCH_S3C24XX   depends on S3C24XX_DMAC   help    This selects a driver for the MCI interface found in      Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.    If you have a board based on one of those and a MMC/SD    slot, say Y or M here.     If unsure, say N. 

static const struct mmc_host_ops s3cmci_ops = {   .request  = s3cmci_request,   .set_ios  = s3cmci_set_ios,   .get_ro   = mmc_gpio_get_ro,   .get_cd   = mmc_gpio_get_cd,   .enable_sdio_irq = s3cmci_enable_sdio_irq, }; 

static struct sdhci_ops sdhci_s3c_ops = {   .get_max_clock   = sdhci_s3c_get_max_clk,   .set_clock   = sdhci_s3c_set_clock,   .get_min_clock   = sdhci_s3c_get_min_clock,   .set_bus_width   = sdhci_set_bus_width,   .reset     = sdhci_reset,   .set_uhs_signaling = sdhci_set_uhs_signaling, };