CMedia audio chips

modulename: hid-cmedia.ko

configname: CONFIG_HID_CMEDIA

Linux Kernel Configuration
└─>Device Drivers
└─>HID bus support
└─>Special HID drivers
└─>CMedia audio chips
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Support for CMedia CM6533 HID audio jack controls
and HS100B mute buttons.

source code:
drivers/hid/hid-cmedia.c