Synopsys DesignWare Memory Card Interface

modulename: dw_mmc.ko

configname: CONFIG_MMC_DW

Linux Kernel Configuration
└─>Device Drivers
└─>MMC/SD/SDIO card support
└─>Synopsys DesignWare Memory Card Interface
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
This selects support for the Synopsys DesignWare Mobile Storage IP
block, this provides host support for SD and MMC interfaces, in both
PIO, internal DMA mode and external DMA mode.

source code: