1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * u_hid.h
4  *
5  * Utility definitions for the hid 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_HID_H
14 #define U_HID_H
15 
16 #include <linux/usb/composite.h>
17 
18 struct f_hid_opts {
19 	struct usb_function_instance	func_inst;
20 	int				minor;
21 	unsigned char			subclass;
22 	unsigned char			protocol;
23 	unsigned short			report_length;
24 	unsigned short			report_desc_length;
25 	unsigned char			*report_desc;
26 	bool				report_desc_alloc;
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 int ghid_setup(struct usb_gadget *g, int count);
37 void ghid_cleanup(void);
38 
39 #endif /* U_HID_H */
40