kernel/Documentation/ABI/testing/configfs-usb-gadget-uac1

   1 What:           /config/usb-gadget/gadget/functions/uac1.name
   2 Date:           Sep 2014
   3 KernelVersion:  3.18
   4 Description:
   5                 The attributes:
   6
   7                 audio_buf_size - audio buffer size
   8                 fn_cap - capture pcm device file name
   9                 fn_cntl - control device file name
  10                 fn_play - playback pcm device file name
  11                 req_buf_size - ISO OUT endpoint request buffer size
  12                 req_count - ISO OUT endpoint request count