Spreadtrum pinctrl driver

modulename: pinctrl-sprd.ko

configname: CONFIG_PINCTRL_SPRD

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Device Tree and Open Firmware support
└─>Spreadtrum pinctrl driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here to enable Spreadtrum pinctrl driver

source code: