Support Wolfson Microelectronics WM831x/2x PMICs with SPI

modulename: wm831x-spi.ko

configname: CONFIG_MFD_WM831X_SPI

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Support Wolfson Microelectronics WM831x/2x PMICs with SPI
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Support for the Wolfson Microelecronics WM831x and WM832x PMICs
when controlled using SPI. This driver provides common support
for accessing the device, additional drivers must be enabled in
order to use the functionality of the device.

source code: