VIA VX855/VX875 GPIO

modulename: gpio-vx855.ko

and/or

vx855_gpio.ko

configname: CONFIG_GPIO_VX855

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>VIA VX855/VX875 GPIO
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Support access to the VX855/VX875 GPIO lines through the gpio library.

This driver provides common support for accessing the device,
additional drivers must be enabled in order to use the
functionality of the device.

source code:

depends
CONFIG_GPIOLIB |
| CONFIG_HAS_IOMEM or CONFIG_PCI or CONFIG_COMPILE_TEST or CONFIG_X86