Tegra30 AHUB module

modulename: snd-soc-tegra30-ahub.ko

configname: CONFIG_SND_SOC_TEGRA30_AHUB

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Tegra30 AHUB module
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Say Y or M if you want to add support for the Tegra30 AHUB module.
You will also need to select the individual machine drivers to
support below.

source code:
sound/soc//tegra/