Altera SPI Controller

modulename: spi-altera-platform.ko

and/or

spi-altera.ko

configname: CONFIG_SPI_ALTERA

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Altera SPI Controller
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
This is the driver for the Altera SPI Controller.

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