HDMI audio without HDAudio on Intel Atom platforms

modulename: snd-hdmi-lpe-audio.ko

configname: CONFIG_HDMI_LPE_AUDIO

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>X86 sound devices
└─>HDMI audio without HDAudio on Intel Atom platforms
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Choose this option to support HDMI LPE Audio mode

source code: