xref: /freebsd/sys/dev/evdev/evdev.h (revision 792bbaba989533a1fc93823df1720c8c4aaf0442)
1 /*-
2  * Copyright (c) 2014 Jakub Wojciech Klama <jceel@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef	_DEV_EVDEV_EVDEV_H
30 #define	_DEV_EVDEV_EVDEV_H
31 
32 #include <sys/types.h>
33 #include <sys/kbio.h>
34 #include <dev/evdev/input.h>
35 #include <dev/kbd/kbdreg.h>
36 
37 #define	NAMELEN		80
38 
39 struct evdev_dev;
40 
41 typedef int (evdev_open_t)(struct evdev_dev *, void *);
42 typedef void (evdev_close_t)(struct evdev_dev *, void *);
43 typedef void (evdev_event_t)(struct evdev_dev *, void *, uint16_t,
44     uint16_t, int32_t);
45 typedef void (evdev_keycode_t)(struct evdev_dev *, void *,
46     struct input_keymap_entry *);
47 
48 /*
49  * Keyboard and mouse events recipient mask.
50  * evdev_rcpt_mask variable should be respected by keyboard and mouse drivers
51  * that are able to send events through both evdev and sysmouse/kbdmux
52  * interfaces so user can choose prefered one to not receive one event twice.
53  */
54 #define	EVDEV_RCPT_SYSMOUSE	(1<<0)
55 #define	EVDEV_RCPT_KBDMUX	(1<<1)
56 #define	EVDEV_RCPT_HW_MOUSE	(1<<2)
57 #define	EVDEV_RCPT_HW_KBD	(1<<3)
58 extern int evdev_rcpt_mask;
59 /*
60  * Sysmouse protocol does not support horizontal wheel movement reporting.
61  * To overcome this limitation different drivers use different sysmouse proto
62  * extensions. Set kern.evdev.sysmouse_t_axis to tell sysmouse evdev driver
63  * which protocol extension is used.
64  * 0 - do not extract horizontal wheel movement (default).
65  * 1 - ums(4) horizontal wheel encoding. T-axis is mapped to buttons 6 and 7
66  * 2 - psm(4) wheels encoding: z = 1,-1 - vert. wheel, z = 2,-2 - horiz. wheel
67  */
68 enum
69 {
70 	EVDEV_SYSMOUSE_T_AXIS_NONE = 0,
71 	EVDEV_SYSMOUSE_T_AXIS_UMS = 1,
72 	EVDEV_SYSMOUSE_T_AXIS_PSM = 2,
73 };
74 extern int evdev_sysmouse_t_axis;
75 
76 #define	ABS_MT_FIRST	ABS_MT_TOUCH_MAJOR
77 #define	ABS_MT_LAST	ABS_MT_TOOL_Y
78 #define	ABS_IS_MT(x)	((x) >= ABS_MT_FIRST && (x) <= ABS_MT_LAST)
79 #define	ABS_MT_INDEX(x)	((x) - ABS_MT_FIRST)
80 #define	MT_CNT		(ABS_MT_INDEX(ABS_MT_LAST) + 1)
81 /* Multitouch protocol type A */
82 #define	MAX_MT_REPORTS	5
83 /* Multitouch protocol type B interface */
84 #define	MAX_MT_SLOTS	16
85 
86 #define	EVDEV_FLAG_SOFTREPEAT	0x00	/* use evdev to repeat keys */
87 #define	EVDEV_FLAG_MT_STCOMPAT	0x01	/* autogenerate ST-compatible events
88 					 * for MT protocol type B reports */
89 #define	EVDEV_FLAG_MT_AUTOREL	0x02	/* Autorelease MT-slots not listed in
90 					 * current MT protocol type B report */
91 #define	EVDEV_FLAG_MAX		0x1F
92 #define	EVDEV_FLAG_CNT		(EVDEV_FLAG_MAX + 1)
93 
94 struct evdev_methods
95 {
96 	evdev_open_t		*ev_open;
97 	evdev_close_t		*ev_close;
98 	evdev_event_t		*ev_event;
99 	evdev_keycode_t		*ev_get_keycode;
100 	evdev_keycode_t		*ev_set_keycode;
101 };
102 
103 /* Input device interface: */
104 struct evdev_dev *evdev_alloc(void);
105 void evdev_free(struct evdev_dev *);
106 void evdev_set_name(struct evdev_dev *, const char *);
107 void evdev_set_id(struct evdev_dev *, uint16_t, uint16_t, uint16_t, uint16_t);
108 void evdev_set_phys(struct evdev_dev *, const char *);
109 void evdev_set_serial(struct evdev_dev *, const char *);
110 void evdev_set_methods(struct evdev_dev *, void *,
111     const struct evdev_methods *);
112 int evdev_register(struct evdev_dev *);
113 int evdev_register_mtx(struct evdev_dev *, struct mtx *);
114 int evdev_unregister(struct evdev_dev *);
115 int evdev_push_event(struct evdev_dev *, uint16_t, uint16_t, int32_t);
116 void evdev_support_prop(struct evdev_dev *, uint16_t);
117 void evdev_support_event(struct evdev_dev *, uint16_t);
118 void evdev_support_key(struct evdev_dev *, uint16_t);
119 void evdev_support_rel(struct evdev_dev *, uint16_t);
120 void evdev_support_abs(struct evdev_dev *, uint16_t, int32_t, int32_t, int32_t,
121    int32_t, int32_t, int32_t);
122 void evdev_support_msc(struct evdev_dev *, uint16_t);
123 void evdev_support_led(struct evdev_dev *, uint16_t);
124 void evdev_support_snd(struct evdev_dev *, uint16_t);
125 void evdev_support_sw(struct evdev_dev *, uint16_t);
126 void evdev_set_repeat_params(struct evdev_dev *, uint16_t, int);
127 int evdev_set_report_size(struct evdev_dev *, size_t);
128 void evdev_set_flag(struct evdev_dev *, uint16_t);
129 
130 /* Multitouch related functions: */
131 int32_t evdev_get_mt_slot_by_tracking_id(struct evdev_dev *, int32_t);
132 void evdev_support_nfingers(struct evdev_dev *, int32_t);
133 void evdev_support_mt_compat(struct evdev_dev *);
134 void evdev_push_nfingers(struct evdev_dev *, int32_t);
135 void evdev_push_mt_compat(struct evdev_dev *);
136 
137 /* Utility functions: */
138 uint16_t evdev_hid2key(int);
139 void evdev_support_all_known_keys(struct evdev_dev *);
140 uint16_t evdev_scancode2key(int *, int);
141 void evdev_push_mouse_btn(struct evdev_dev *, int);
142 void evdev_push_leds(struct evdev_dev *, int);
143 void evdev_push_repeats(struct evdev_dev *, keyboard_t *);
144 evdev_event_t evdev_ev_kbd_event;
145 
146 /* Event reporting shortcuts: */
147 static __inline int
148 evdev_sync(struct evdev_dev *evdev)
149 {
150 
151 	return (evdev_push_event(evdev, EV_SYN, SYN_REPORT, 1));
152 }
153 
154 static __inline int
155 evdev_mt_sync(struct evdev_dev *evdev)
156 {
157 
158 	return (evdev_push_event(evdev, EV_SYN, SYN_MT_REPORT, 1));
159 }
160 
161 static __inline int
162 evdev_push_key(struct evdev_dev *evdev, uint16_t code, int32_t value)
163 {
164 
165 	return (evdev_push_event(evdev, EV_KEY, code, value != 0));
166 }
167 
168 static __inline int
169 evdev_push_rel(struct evdev_dev *evdev, uint16_t code, int32_t value)
170 {
171 
172 	return (evdev_push_event(evdev, EV_REL, code, value));
173 }
174 
175 static __inline int
176 evdev_push_abs(struct evdev_dev *evdev, uint16_t code, int32_t value)
177 {
178 
179 	return (evdev_push_event(evdev, EV_ABS, code, value));
180 }
181 
182 static __inline int
183 evdev_push_msc(struct evdev_dev *evdev, uint16_t code, int32_t value)
184 {
185 
186 	return (evdev_push_event(evdev, EV_MSC, code, value));
187 }
188 
189 static __inline int
190 evdev_push_led(struct evdev_dev *evdev, uint16_t code, int32_t value)
191 {
192 
193 	return (evdev_push_event(evdev, EV_LED, code, value != 0));
194 }
195 
196 static __inline int
197 evdev_push_snd(struct evdev_dev *evdev, uint16_t code, int32_t value)
198 {
199 
200 	return (evdev_push_event(evdev, EV_SND, code, value != 0));
201 }
202 
203 static __inline int
204 evdev_push_sw(struct evdev_dev *evdev, uint16_t code, int32_t value)
205 {
206 
207 	return (evdev_push_event(evdev, EV_SW, code, value != 0));
208 }
209 
210 #endif	/* _DEV_EVDEV_EVDEV_H */
211