xref: /linux/drivers/usb/gadget/function/u_midi.h (revision 762f99f4f3cb41a775b5157dd761217beba65873)
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