CONFIG_SND_SOC_IMX_PCM_DMA (not configurable)

modulename: imx-pcm-dma.ko

configname: CONFIG_SND_SOC_IMX_PCM_DMA

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio for Freescale CPUs
└─>SND_SOC_IMX_PCM_DMA
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
sound/soc//fsl/imx-pcm-dma.c