SoC Audio support for the Broadcom BCM2835 I2S module

modulename: snd-soc-bcm2835-i2s.ko

configname: CONFIG_SND_BCM2835_SOC_I2S

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio support for the Broadcom BCM2835 I2S module
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y or M if you want to add support for codecs attached to
the BCM2835 I2S interface. You will also need
to select the audio interfaces to support below.

source code:
sound/soc//bcm/