SoC Audio for the Marvell Kirkwood chip

modulename: snd-soc-kirkwood.ko

configname: CONFIG_SND_KIRKWOOD_SOC

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio for the Marvell Kirkwood chip
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
Say Y or M if you want to add support for codecs attached to
the Kirkwood I2S interface. You will also need to select the
audio interfaces to support below.

source code:
sound/soc//kirkwood/