VIA VX855/VX875 integrated south bridge

modulename: vx855.ko

configname: CONFIG_MFD_VX855

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>VIA VX855/VX875 integrated south bridge
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Say yes here to enable support for various functions of the
VIA VX855/VX875 south bridge. You will need to enable the vx855_spi
and/or vx855_gpio drivers for this to do anything useful.

source code: