What: /config/usb-gadget/gadget/functions/midi.name
Date: Nov 2014
KernelVersion: 3.19
Description:
The attributes:
========== ====================================
index index value for the USB MIDI adapter
id ID string for the USB MIDI adapter
buflen MIDI buffer length
qlen USB read request queue length
in_ports number of MIDI input ports
out_ports number of MIDI output ports
========== ====================================