WM831x PMIC Backlight Driver

modulename: wm831x_bl.ko

configname: CONFIG_BACKLIGHT_WM831X

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Backlight & LCD device support
└─>WM831x PMIC Backlight Driver
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
If you have a backlight driven by the ISINK and DCDC of a
WM831x PMIC say y to enable the backlight driver for it.

source code: