SoC Audio support for WM8731-based At91sam9g20 evaluation board

modulename: snd-soc-sam9g20-wm8731.ko

configname: CONFIG_SND_AT91_SOC_SAM9G20_WM8731

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio support for WM8731-based At91sam9g20 evaluation board
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
Say Y if you want to add support for SoC audio on WM8731-based
AT91sam9g20 evaluation board.

source code:
sound/soc//atmel/