Support for GPIO pins on XR17V352/354/358

modulename: gpio-exar.ko

configname: CONFIG_GPIO_EXAR

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>Support for GPIO pins on XR17V352/354/358
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Selecting this option will enable handling of GPIO pins present
on Exar XR17V352/354/358 chips.

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