blob: 9c6974f169661d6495069e15018dad33a5b237f5 [file] [log] [blame]
David Herrmann487e27e2012-06-10 15:16:14 +02001#ifndef __UHID_H_
2#define __UHID_H_
3
4/*
5 * User-space I/O driver support for HID subsystem
6 * Copyright (c) 2012 David Herrmann
7 */
8
9/*
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; either version 2 of the License, or (at your option)
13 * any later version.
14 */
15
16/*
17 * Public header for user-space communication. We try to keep every structure
18 * aligned but to be safe we also use __attribute__((__packed__)). Therefore,
19 * the communication should be ABI compatible even between architectures.
20 */
21
22#include <linux/input.h>
23#include <linux/types.h>
24
25enum uhid_event_type {
David Herrmann9b9a3792012-06-10 15:16:18 +020026 UHID_CREATE,
27 UHID_DESTROY,
David Herrmannba5c3132012-06-10 15:16:21 +020028 UHID_START,
29 UHID_STOP,
David Herrmann8fbb8772012-06-10 15:16:22 +020030 UHID_OPEN,
31 UHID_CLOSE,
David Herrmann845d8fc2012-06-10 15:16:24 +020032 UHID_OUTPUT,
David Herrmann9db7c632012-06-10 15:16:23 +020033 UHID_OUTPUT_EV,
David Herrmann5f807222012-06-10 15:16:19 +020034 UHID_INPUT,
David Herrmannd083f602012-06-10 15:16:25 +020035 UHID_FEATURE,
36 UHID_FEATURE_ANSWER,
David Herrmann487e27e2012-06-10 15:16:14 +020037};
38
David Herrmann9b9a3792012-06-10 15:16:18 +020039struct uhid_create_req {
40 __u8 name[128];
41 __u8 phys[64];
42 __u8 uniq[64];
43 __u8 __user *rd_data;
44 __u16 rd_size;
45
46 __u16 bus;
47 __u32 vendor;
48 __u32 product;
49 __u32 version;
50 __u32 country;
51} __attribute__((__packed__));
52
David Herrmann5f807222012-06-10 15:16:19 +020053#define UHID_DATA_MAX 4096
54
David Herrmann845d8fc2012-06-10 15:16:24 +020055enum uhid_report_type {
56 UHID_FEATURE_REPORT,
57 UHID_OUTPUT_REPORT,
58 UHID_INPUT_REPORT,
59};
60
David Herrmann5f807222012-06-10 15:16:19 +020061struct uhid_input_req {
62 __u8 data[UHID_DATA_MAX];
63 __u16 size;
64} __attribute__((__packed__));
65
David Herrmann845d8fc2012-06-10 15:16:24 +020066struct uhid_output_req {
67 __u8 data[UHID_DATA_MAX];
68 __u16 size;
69 __u8 rtype;
70} __attribute__((__packed__));
71
David Herrmann9db7c632012-06-10 15:16:23 +020072struct uhid_output_ev_req {
73 __u16 type;
74 __u16 code;
75 __s32 value;
76} __attribute__((__packed__));
77
David Herrmannd083f602012-06-10 15:16:25 +020078struct uhid_feature_req {
79 __u32 id;
80 __u8 rnum;
81 __u8 rtype;
82} __attribute__((__packed__));
83
84struct uhid_feature_answer_req {
85 __u32 id;
86 __u16 err;
87 __u16 size;
88 __u8 data[UHID_DATA_MAX];
89};
90
David Herrmann487e27e2012-06-10 15:16:14 +020091struct uhid_event {
92 __u32 type;
David Herrmann9b9a3792012-06-10 15:16:18 +020093
94 union {
95 struct uhid_create_req create;
David Herrmann5f807222012-06-10 15:16:19 +020096 struct uhid_input_req input;
David Herrmann845d8fc2012-06-10 15:16:24 +020097 struct uhid_output_req output;
David Herrmann9db7c632012-06-10 15:16:23 +020098 struct uhid_output_ev_req output_ev;
David Herrmannd083f602012-06-10 15:16:25 +020099 struct uhid_feature_req feature;
100 struct uhid_feature_answer_req feature_answer;
David Herrmann9b9a3792012-06-10 15:16:18 +0200101 } u;
David Herrmann487e27e2012-06-10 15:16:14 +0200102} __attribute__((__packed__));
103
104#endif /* __UHID_H_ */