1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  Copyright (c) 2007 Jiri Kosina
4  */
5 #ifndef _HIDRAW_H
6 #define _HIDRAW_H
7 
8 #include <uapi/linux/hidraw.h>
9 
10 
11 struct hidraw {
12 	unsigned int minor;
13 	int exist;
14 	int open;
15 	wait_queue_head_t wait;
16 	struct hid_device *hid;
17 	struct device *dev;
18 	spinlock_t list_lock;
19 	struct list_head list;
20 };
21 
22 struct hidraw_report {
23 	__u8 *value;
24 	int len;
25 };
26 
27 struct hidraw_list {
28 	struct hidraw_report buffer[HIDRAW_BUFFER_SIZE];
29 	int head;
30 	int tail;
31 	struct fasync_struct *fasync;
32 	struct hidraw *hidraw;
33 	struct list_head node;
34 	struct mutex read_mutex;
35 	bool revoked;
36 };
37 
38 #ifdef CONFIG_HIDRAW
39 int hidraw_init(void);
40 void hidraw_exit(void);
41 int hidraw_report_event(struct hid_device *, u8 *, int);
42 int hidraw_connect(struct hid_device *);
43 void hidraw_disconnect(struct hid_device *);
44 #else
hidraw_init(void)45 static inline int hidraw_init(void) { return 0; }
hidraw_exit(void)46 static inline void hidraw_exit(void) { }
hidraw_report_event(struct hid_device * hid,u8 * data,int len)47 static inline int hidraw_report_event(struct hid_device *hid, u8 *data, int len) { return 0; }
hidraw_connect(struct hid_device * hid)48 static inline int hidraw_connect(struct hid_device *hid) { return -1; }
hidraw_disconnect(struct hid_device * hid)49 static inline void hidraw_disconnect(struct hid_device *hid) { }
50 #endif
51 
52 #endif
53