Audio Class 1.0

configname: CONFIG_USB_CONFIGFS_F_UAC1

USB Gadget Drivers
└─>Advanced Linux Sound Architecture
└─>Audio Class 1.0
In linux kernel since version 3.19 (release Date: 2015-02-08)  
This Audio function implements 1 AudioControl interface,
1 AudioStreaming Interface each for USB-OUT and USB-IN.
This driver requires a real Audio codec to be present
on the device.