CONFIG_SND_SOC_RT5631 (not configurable)

modulename: snd-soc-rt5631.ko

configname: CONFIG_SND_SOC_RT5631

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>CODEC drivers
└─>SND_SOC_RT5631
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code: