F_MIDI2_EP_OPT
F_MIDI2_EP_OPT(protocol, "0x%x", 1, 2);
F_MIDI2_EP_OPT(protocol_caps, "0x%x", 1, 3);
F_MIDI2_EP_OPT(manufacturer, "0x%x", 0, 0xffffff);
F_MIDI2_EP_OPT(family, "0x%x", 0, 0xffff);
F_MIDI2_EP_OPT(model, "0x%x", 0, 0xffff);
F_MIDI2_EP_OPT(sw_revision, "0x%x", 0, 0xffffffff);