Atmel ASoC driver for boards using WM8904 codec

modulename: snd-atmel-soc-wm8904.ko

configname: CONFIG_SND_ATMEL_SOC_WM8904

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Atmel ASoC driver for boards using WM8904 codec
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y if you want to add support for Atmel ASoC driver for boards using
WM8904 codec.

source code:
sound/soc//atmel/