Greybus GPIO Bridged PHY driver

modulename: gb-gpio.ko

configname: CONFIG_GREYBUS_GPIO

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Greybus support
└─>Greybus Bridged PHY Class drivers
└─>GPIO Support
└─>Greybus GPIO Bridged PHY driver
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Select this option if you have a device that follows the
Greybus GPIO Bridged PHY Class specification.

To compile this code as a module, chose M here: the module
will be called gb-gpio.ko

source code: