Cirrus Logic Madera codecs with I2C

modulename: madera-i2c.ko

configname: CONFIG_MFD_MADERA_I2C

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Cirrus Logic Madera codecs with I2C
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Support for the Cirrus Logic Madera platform audio SoC
core functionality controlled via I2C.

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