1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * u_midi.h 4 * 5 * Utility definitions for the midi function 6 * 7 * Copyright (c) 2014 Samsung Electronics Co., Ltd. 8 * http://www.samsung.com 9 * 10 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> 11 */ 12 13 #ifndef U_MIDI_H 14 #define U_MIDI_H 15 16 #include <linux/usb/composite.h> 17 18 struct f_midi_opts { 19 struct usb_function_instance func_inst; 20 int index; 21 char *id; 22 bool id_allocated; 23 unsigned int in_ports; 24 unsigned int out_ports; 25 unsigned int buflen; 26 unsigned int qlen; 27 28 /* 29 * Protect the data form concurrent access by read/write 30 * and create symlink/remove symlink. 31 */ 32 struct mutex lock; 33 int refcnt; 34 }; 35 36 #endif /* U_MIDI_H */ 37 38