CONFIG_SND_PXA2XX_SOC_AC97 (not configurable)

modulename: snd-soc-pxa2xx-ac97.ko

configname: CONFIG_SND_PXA2XX_SOC_AC97

Linux Kernel Configuration
└─>Device Drivers
└─>Sound
└─>Advanced Linux Sound Architecture
└─>System on Chip audio support
└─>SND_PXA2XX_SOC_AC97
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
source code:
sound/soc/pxa//