CONFIG_OF_GPIO (not configurable)
modulename: gpio.ko
and/orgpiolib-of.ko
configname: CONFIG_OF_GPIO
Linux Kernel Configuration
└─>Device Drivers
└─>Device Tree and Open Firmware support
└─>OF_GPIO
In linux kernel since version 2.6.26 (release Date: 2008-07-13)
OpenFirmware GPIO accessors