CONFIG_SND_ATMEL_SOC_PDC (not configurable)

modulename: snd-soc-atmel-pcm-pdc.ko

configname: CONFIG_SND_ATMEL_SOC_PDC

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SND_ATMEL_SOC_PDC
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
sound/soc//atmel/