Intel Baytrail GPIO pin control

modulename: pinctrl-baytrail.ko

configname: CONFIG_PINCTRL_BAYTRAIL

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Intel Baytrail GPIO pin control
In linux kernel since version 3.10 (release Date: 2013-06-30)  
driver for memory mapped GPIO functionality on Intel Baytrail
platforms. Supports 3 banks with 102, 28 and 44 gpios.
Most pins are usually muxed to some other functionality by firmware,
so only a small amount is available for gpio use.

Requires ACPI device enumeration code to set up a platform device.

source code: