CONFIG_SND_SOC_DMAENGINE_PCM (not configurable)

modulename: snd-soc-dmaengine-pcm.ko

configname: CONFIG_SND_SOC_DMAENGINE_PCM

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