Cavium OCTEON GPIO

modulename: gpio-octeon.ko

configname: CONFIG_GPIO_OCTEON

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>Cavium OCTEON GPIO
In linux kernel since version 3.12 (release Date: 2013-11-03)  
Say yes here to support the on-chip GPIO lines on the OCTEON
family of SOCs.

source code:
drivers/gpio/gpio-octeon.c