TI/National Semiconductor LP3943 MFD Driver

modulename: lp3943.ko

configname: CONFIG_MFD_LP3943

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>TI/National Semiconductor LP3943 MFD Driver
In linux kernel since version 3.14 (release Date: 2014-03-30)  
Support for the TI/National Semiconductor LP3943.
This driver consists of GPIO and PWM drivers.
With these functionalities, it can be used for LED string control or
general usage such like a GPIO controller and a PWM controller.

source code:
drivers/mfd//lp3943.c