Atheros AR71XX/AR724X/AR913X GPIO support

modulename: gpio-ath79.ko

configname: CONFIG_GPIO_ATH79

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>Atheros AR71XX/AR724X/AR913X GPIO support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Select this option to enable GPIO driver for
Atheros AR71XX/AR724X/AR913X SoC devices.

source code:
drivers/gpio/gpio-ath79.c

depends
CONFIG_GPIOLIB
CONFIG_HAS_IOMEM
CONFIG_ATH79 or CONFIG_COMPILE_TEST