SoC audio support

modulename: snd-soc-core.ko

configname: CONFIG_SND_SOC

Linux Kernel Configuration
└─>Device Drivers
└─>Sound
└─>Advanced Linux Sound Architecture
└─>SoC audio support
└─>SoC audio support
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
If you want SoC support, you should say Y here and also to the
specific driver for your SoC below. You will also need to select the
specific codec(s) attached to the SoC

This SoC audio support can also be built as a module. If so, the module
will be called snd-soc-core.

source code:
sound/soc/