Wolfson Microelectronics WM8400

modulename: wm8400-core.ko

configname: CONFIG_MFD_WM8400

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>I2C support
└─>Wolfson Microelectronics WM8400
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
Support for the Wolfson Microelecronics WM8400 PMIC and audio
CODEC. 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:

depends
CONFIG_GENERIC_HARDIRQS
CONFIG_HAS_IOMEM
CONFIG_I2C