Synopsys Designware I2S Audio interface

modulename: dw-hdmi-i2s-audio.ko

configname: CONFIG_DRM_DW_HDMI_I2S_AUDIO

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Interface Bridges
└─>Synopsys Designware I2S Audio interface
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Support the I2S Audio interface which is part of the Synopsys
Designware HDMI block.

source code:
drivers/gpu/drm//bridge/synopsys/dw-hdmi-i2s-audio.c