DB1000 Audio support

modulename: snd-soc-db1000.ko

configname: CONFIG_SND_SOC_DB1000

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>DB1000 Audio support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Select this option to enable AC97 audio on the early DB1x00 series
of boards (DB1000/DB1500/DB1100).

source code:
sound/soc//au1x/