SoC AC97 Audio support for Tosa

modulename: snd-soc-tosa.ko

configname: CONFIG_SND_PXA2XX_SOC_TOSA

Linux Kernel Configuration
└─>Device Drivers
└─>Sound
└─>Advanced Linux Sound Architecture
└─>System on Chip audio support
└─>SoC AC97 Audio support for Tosa
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
Say Y if you want to add support for SoC audio on Sharp
Zaurus SL-C6000x models (Tosa).

source code:
sound/soc/pxa//