Samsung S3C64XX/Exynos SoC series type SPI

modulename: spi-s3c64xx.ko

configname: CONFIG_SPI_S3C64XX

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Samsung S3C64XX/Exynos SoC series type SPI
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
SPI driver for Samsung S3C64XX, S5Pv210 and Exynos SoCs.
Choose Y/M here only if you build for such Samsung SoC.

source code:
drivers/spi/spi-s3c64xx.c