1 /* 2 * u_midi.h 3 * 4 * Utility definitions for the midi function 5 * 6 * Copyright (c) 2014 Samsung Electronics Co., Ltd. 7 * http://www.samsung.com 8 * 9 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 */ 15 16 #ifndef U_MIDI_H 17 #define U_MIDI_H 18 19 #include <linux/usb/composite.h> 20 21 struct f_midi_opts { 22 struct usb_function_instance func_inst; 23 int index; 24 char *id; 25 bool id_allocated; 26 unsigned int in_ports; 27 unsigned int out_ports; 28 unsigned int buflen; 29 unsigned int qlen; 30 31 /* 32 * Protect the data form concurrent access by read/write 33 * and create symlink/remove symlink. 34 */ 35 struct mutex lock; 36 int refcnt; 37 }; 38 39 #endif /* U_MIDI_H */ 40 41