DesignWare SPI controller core support

modulename: spi-dw.ko

configname: CONFIG_SPI_DESIGNWARE

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>DesignWare SPI controller core support
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
general driver for SPI controller core from DesignWare

source code:
drivers/spi/spi-dw.c

is selected by
CONFIG_SPI_DW_BT1