1What: /config/usb-gadget/gadget/functions/uac1.name 2Date: Sep 2014 3KernelVersion: 3.18 4Description: 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 13