Wolfson Microelectronics Arizona platform with I2C

modulename: arizona-i2c.ko

configname: CONFIG_MFD_ARIZONA_I2C

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Wolfson Microelectronics Arizona platform with I2C
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Support for the Wolfson Microelectronics Arizona platform audio SoC
core functionality controlled via I2C.

source code:
drivers/mfd//arizona-i2c.c