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 */