NVIDIA Tegra HD Audio

modulename: snd-hda-tegra.ko

configname: CONFIG_SND_HDA_TEGRA

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>HD-Audio
└─>NVIDIA Tegra HD Audio
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here to support the HDA controller present in NVIDIA
Tegra SoCs

This options enables support for the HD Audio controller
present in some NVIDIA Tegra SoCs, used to communicate audio
to the HDMI output.

To compile this driver as a module, choose M here: the module
will be called snd-hda-tegra.

source code: