CONFIG_USB_F_UAC1 (not configurable)

modulename: usb_f_uac1.ko

configname: CONFIG_USB_F_UAC1

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB Gadget Support
└─>USB_F_UAC1
In linux kernel since version 3.18 (release Date: 2014-12-07)  
source code:
drivers/usb/gadget/function//

is depended by
CONFIG_USB_AUDIO