blob: 39e04d8ec15c7407a115d5ba2800f7491bcce3e9 [file] [log] [blame]
Kristian Høgsberg43db4012011-01-14 14:45:42 -05001/*
2 * Copyright © 2010 Intel Corporation
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of the copyright holders not be used in
9 * advertising or publicity pertaining to distribution of the software
10 * without specific, written prior permission. The copyright holders make
11 * no representations about the suitability of this software for any
12 * purpose. It is provided "as is" without express or implied warranty.
13 *
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
15 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
16 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
17 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
18 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
19 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 */
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <linux/input.h>
27#include <unistd.h>
28#include <fcntl.h>
29
30#include "compositor.h"
Tiago Vignattice03ec32011-12-19 01:14:03 +020031#include "evdev.h"
Kristian Høgsberg43db4012011-01-14 14:45:42 -050032
33struct evdev_input {
Kristian Høgsberg8334bc12012-01-03 10:29:47 -050034 struct weston_input_device base;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -040035 struct wl_list devices_list;
36 struct udev_monitor *udev_monitor;
37 char *seat_id;
Kristian Høgsberg43db4012011-01-14 14:45:42 -050038};
39
Kristian Høgsberg558949b2011-12-21 22:54:49 -050040#define MAX_SLOTS 16
Kristian Høgsberg39373542011-12-21 22:18:36 -050041
Kristian Høgsberg43db4012011-01-14 14:45:42 -050042struct evdev_input_device {
43 struct evdev_input *master;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -040044 struct wl_list link;
Kristian Høgsberg43db4012011-01-14 14:45:42 -050045 struct wl_event_source *source;
Kristian Høgsberg8334bc12012-01-03 10:29:47 -050046 struct weston_output *output;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -040047 char *devnode;
Kristian Høgsberg43db4012011-01-14 14:45:42 -050048 int fd;
Tiago Vignattia157fc12011-11-21 16:39:55 +020049 struct {
50 int min_x, max_x, min_y, max_y;
51 int old_x, old_y, reset_x, reset_y;
Kristian Høgsberg39373542011-12-21 22:18:36 -050052 int32_t x, y;
Tiago Vignattia157fc12011-11-21 16:39:55 +020053 } abs;
Kristian Høgsberg39373542011-12-21 22:18:36 -050054
55 struct {
56 int slot;
57 int32_t x[MAX_SLOTS];
58 int32_t y[MAX_SLOTS];
59 } mt;
60
61 struct {
62 int dx, dy;
63 } rel;
64
65 int type; /* event type flags */
66
Tiago Vignatti22c6bce2011-12-21 19:34:09 +020067 int is_touchpad, is_mt;
Kristian Høgsberg43db4012011-01-14 14:45:42 -050068};
69
Tiago Vignattia52b2e42011-11-21 17:40:30 +020070/* event type flags */
Tiago Vignatti22c6bce2011-12-21 19:34:09 +020071#define EVDEV_ABSOLUTE_MOTION (1 << 0)
72#define EVDEV_ABSOLUTE_MT_DOWN (1 << 1)
73#define EVDEV_ABSOLUTE_MT_MOTION (1 << 2)
74#define EVDEV_ABSOLUTE_MT_UP (1 << 3)
75#define EVDEV_RELATIVE_MOTION (1 << 4)
Tiago Vignattia52b2e42011-11-21 17:40:30 +020076
Tiago Vignatti8be003b2011-09-01 19:00:03 +030077static inline void
78evdev_process_key(struct evdev_input_device *device,
Tiago Vignatti8755ff92011-11-10 14:47:30 +020079 struct input_event *e, int time)
Tiago Vignatti8be003b2011-09-01 19:00:03 +030080{
Tiago Vignatti8755ff92011-11-10 14:47:30 +020081 if (e->value == 2)
82 return;
83
Tiago Vignatti8be003b2011-09-01 19:00:03 +030084 switch (e->code) {
Tiago Vignatti8be003b2011-09-01 19:00:03 +030085 case BTN_TOOL_PEN:
86 case BTN_TOOL_RUBBER:
87 case BTN_TOOL_BRUSH:
88 case BTN_TOOL_PENCIL:
89 case BTN_TOOL_AIRBRUSH:
90 case BTN_TOOL_FINGER:
91 case BTN_TOOL_MOUSE:
92 case BTN_TOOL_LENS:
Tiago Vignatti8be003b2011-09-01 19:00:03 +030093 if (device->is_touchpad)
94 {
Tiago Vignattia157fc12011-11-21 16:39:55 +020095 device->abs.reset_x = 1;
96 device->abs.reset_y = 1;
Tiago Vignatti8be003b2011-09-01 19:00:03 +030097 }
98 break;
Tiago Vignattid9043592011-09-01 19:00:05 +030099 case BTN_TOUCH:
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200100 /* Multitouch touchscreen devices might not send individually
101 * button events each time a new finger is down. So we don't
102 * send notification for such devices and we solve the button
103 * case emulating on compositor side. */
104 if (device->is_mt)
105 break;
106
Tiago Vignattid9043592011-09-01 19:00:05 +0300107 /* Treat BTN_TOUCH from devices that only have BTN_TOUCH as
108 * BTN_LEFT */
109 e->code = BTN_LEFT;
110 /* Intentional fallthrough! */
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300111 case BTN_LEFT:
112 case BTN_RIGHT:
113 case BTN_MIDDLE:
114 case BTN_SIDE:
115 case BTN_EXTRA:
116 case BTN_FORWARD:
117 case BTN_BACK:
118 case BTN_TASK:
119 notify_button(&device->master->base.input_device,
Tiago Vignatti8755ff92011-11-10 14:47:30 +0200120 time, e->code, e->value);
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300121 break;
122
123 default:
124 notify_key(&device->master->base.input_device,
Tiago Vignatti8755ff92011-11-10 14:47:30 +0200125 time, e->code, e->value);
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300126 break;
127 }
128}
129
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200130static void
131evdev_process_touch(struct evdev_input_device *device,
Kristian Høgsberg39373542011-12-21 22:18:36 -0500132 struct input_event *e)
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200133{
134 const int screen_width = device->output->current->width;
135 const int screen_height = device->output->current->height;
136
137 switch (e->code) {
138 case ABS_MT_SLOT:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500139 device->mt.slot = e->value;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200140 break;
141 case ABS_MT_TRACKING_ID:
142 if (e->value >= 0)
Kristian Høgsberg39373542011-12-21 22:18:36 -0500143 device->type |= EVDEV_ABSOLUTE_MT_DOWN;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200144 else
Kristian Høgsberg39373542011-12-21 22:18:36 -0500145 device->type |= EVDEV_ABSOLUTE_MT_UP;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200146 break;
147 case ABS_MT_POSITION_X:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500148 device->mt.x[device->mt.slot] =
149 (e->value - device->abs.min_x) * screen_width /
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200150 (device->abs.max_x - device->abs.min_x) +
151 device->output->x;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500152 device->type |= EVDEV_ABSOLUTE_MT_MOTION;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200153 break;
154 case ABS_MT_POSITION_Y:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500155 device->mt.y[device->mt.slot] =
156 (e->value - device->abs.min_y) * screen_height /
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200157 (device->abs.max_y - device->abs.min_y) +
158 device->output->y;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500159 device->type |= EVDEV_ABSOLUTE_MT_MOTION;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200160 break;
161 }
162}
163
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300164static inline void
165evdev_process_absolute_motion(struct evdev_input_device *device,
Kristian Høgsberg39373542011-12-21 22:18:36 -0500166 struct input_event *e)
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300167{
Kristian Høgsberge7b5b412011-09-01 13:25:50 -0400168 const int screen_width = device->output->current->width;
169 const int screen_height = device->output->current->height;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300170
171 switch (e->code) {
172 case ABS_X:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500173 device->abs.x =
174 (e->value - device->abs.min_x) * screen_width /
Tiago Vignattia52b2e42011-11-21 17:40:30 +0200175 (device->abs.max_x - device->abs.min_x) +
176 device->output->x;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500177 device->type |= EVDEV_ABSOLUTE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300178 break;
179 case ABS_Y:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500180 device->abs.y =
181 (e->value - device->abs.min_y) * screen_height /
Tiago Vignattia52b2e42011-11-21 17:40:30 +0200182 (device->abs.max_y - device->abs.min_y) +
183 device->output->y;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500184 device->type |= EVDEV_ABSOLUTE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300185 break;
186 }
187}
188
189static inline void
190evdev_process_absolute_motion_touchpad(struct evdev_input_device *device,
Kristian Høgsberg39373542011-12-21 22:18:36 -0500191 struct input_event *e)
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300192{
193 /* FIXME: Make this configurable somehow. */
194 const int touchpad_speed = 700;
195
196 switch (e->code) {
197 case ABS_X:
Tiago Vignattia157fc12011-11-21 16:39:55 +0200198 e->value -= device->abs.min_x;
199 if (device->abs.reset_x)
200 device->abs.reset_x = 0;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300201 else {
Kristian Høgsberg39373542011-12-21 22:18:36 -0500202 device->rel.dx =
203 (e->value - device->abs.old_x) *
Tiago Vignattia52b2e42011-11-21 17:40:30 +0200204 touchpad_speed /
Tiago Vignattia157fc12011-11-21 16:39:55 +0200205 (device->abs.max_x - device->abs.min_x);
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300206 }
Tiago Vignattia157fc12011-11-21 16:39:55 +0200207 device->abs.old_x = e->value;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500208 device->type |= EVDEV_RELATIVE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300209 break;
210 case ABS_Y:
Tiago Vignattia157fc12011-11-21 16:39:55 +0200211 e->value -= device->abs.min_y;
212 if (device->abs.reset_y)
213 device->abs.reset_y = 0;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300214 else {
Kristian Høgsberg39373542011-12-21 22:18:36 -0500215 device->rel.dy =
216 (e->value - device->abs.old_y) *
Tiago Vignattia52b2e42011-11-21 17:40:30 +0200217 touchpad_speed /
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300218 /* maybe use x size here to have the same scale? */
Tiago Vignattia157fc12011-11-21 16:39:55 +0200219 (device->abs.max_y - device->abs.min_y);
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300220 }
Tiago Vignattia157fc12011-11-21 16:39:55 +0200221 device->abs.old_y = e->value;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500222 device->type |= EVDEV_RELATIVE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300223 break;
224 }
225}
226
227static inline void
Kristian Høgsberg39373542011-12-21 22:18:36 -0500228evdev_process_relative_motion(struct evdev_input_device *device,
229 struct input_event *e)
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300230{
231 switch (e->code) {
232 case REL_X:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500233 device->rel.dx += e->value;
234 device->type |= EVDEV_RELATIVE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300235 break;
236 case REL_Y:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500237 device->rel.dy += e->value;
238 device->type |= EVDEV_RELATIVE_MOTION;
Tiago Vignatti8be003b2011-09-01 19:00:03 +0300239 break;
240 }
241}
242
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200243static inline void
244evdev_process_absolute(struct evdev_input_device *device,
Kristian Høgsberg39373542011-12-21 22:18:36 -0500245 struct input_event *e)
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200246{
247 if (device->is_touchpad) {
Kristian Høgsberg39373542011-12-21 22:18:36 -0500248 evdev_process_absolute_motion_touchpad(device, e);
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200249 } else if (device->is_mt) {
Kristian Høgsberg39373542011-12-21 22:18:36 -0500250 evdev_process_touch(device, e);
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200251 } else {
Kristian Høgsberg39373542011-12-21 22:18:36 -0500252 evdev_process_absolute_motion(device, e);
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200253 }
254}
255
Kristian Høgsbergb1868472011-04-22 12:27:57 -0400256static int
Tiago Vignatti52e158d2011-11-18 14:56:58 +0200257is_motion_event(struct input_event *e)
258{
259 switch (e->type) {
260 case EV_REL:
261 switch (e->code) {
262 case REL_X:
263 case REL_Y:
264 return 1;
265 }
266 case EV_ABS:
267 switch (e->code) {
268 case ABS_X:
269 case ABS_Y:
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200270 case ABS_MT_POSITION_X:
271 case ABS_MT_POSITION_Y:
Tiago Vignatti52e158d2011-11-18 14:56:58 +0200272 return 1;
273 }
274 }
275
276 return 0;
277}
278
279static void
Kristian Høgsberg39373542011-12-21 22:18:36 -0500280evdev_flush_motion(struct evdev_input_device *device, uint32_t time)
Tiago Vignatti52e158d2011-11-18 14:56:58 +0200281{
Kristian Høgsberg558949b2011-12-21 22:54:49 -0500282 struct wl_input_device *master = &device->master->base.input_device;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500283
284 if (!device->type)
Tiago Vignatti12c05b72011-12-08 13:20:46 +0200285 return;
286
Kristian Høgsberg39373542011-12-21 22:18:36 -0500287 if (device->type & EVDEV_RELATIVE_MOTION) {
288 notify_motion(master, time,
289 master->x + device->rel.dx,
290 master->y + device->rel.dy);
291 device->type &= ~EVDEV_RELATIVE_MOTION;
292 device->rel.dx = 0;
293 device->rel.dy = 0;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200294 }
Kristian Høgsberg39373542011-12-21 22:18:36 -0500295 if (device->type & EVDEV_ABSOLUTE_MT_DOWN) {
296 notify_touch(master, time,
297 device->mt.slot,
298 device->mt.x[device->mt.slot],
299 device->mt.y[device->mt.slot],
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200300 WL_INPUT_DEVICE_TOUCH_DOWN);
Kristian Høgsberg39373542011-12-21 22:18:36 -0500301 device->type &= ~EVDEV_ABSOLUTE_MT_DOWN;
302 device->type &= ~EVDEV_ABSOLUTE_MT_MOTION;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200303 }
Kristian Høgsberg39373542011-12-21 22:18:36 -0500304 if (device->type & EVDEV_ABSOLUTE_MT_MOTION) {
305 notify_touch(master, time,
306 device->mt.slot,
307 device->mt.x[device->mt.slot],
308 device->mt.y[device->mt.slot],
309 WL_INPUT_DEVICE_TOUCH_MOTION);
310 device->type &= ~EVDEV_ABSOLUTE_MT_DOWN;
311 device->type &= ~EVDEV_ABSOLUTE_MT_MOTION;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200312 }
Kristian Høgsberg39373542011-12-21 22:18:36 -0500313 if (device->type & EVDEV_ABSOLUTE_MT_UP) {
314 notify_touch(master, time, device->mt.slot, 0, 0,
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200315 WL_INPUT_DEVICE_TOUCH_UP);
Kristian Høgsberg39373542011-12-21 22:18:36 -0500316 device->type &= ~EVDEV_ABSOLUTE_MT_UP;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200317 }
Kristian Høgsberg39373542011-12-21 22:18:36 -0500318 if (device->type & EVDEV_ABSOLUTE_MOTION) {
319 notify_motion(master, time, device->abs.x, device->abs.y);
320 device->type &= ~EVDEV_ABSOLUTE_MOTION;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200321 }
Tiago Vignatti52e158d2011-11-18 14:56:58 +0200322}
323
324static int
Kristian Høgsbergb1868472011-04-22 12:27:57 -0400325evdev_input_device_data(int fd, uint32_t mask, void *data)
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500326{
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500327 struct weston_compositor *ec;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500328 struct evdev_input_device *device = data;
329 struct input_event ev[8], *e, *end;
Tiago Vignattia52b2e42011-11-21 17:40:30 +0200330 int len;
Kristian Høgsberg865f9b82011-12-02 06:39:02 -0500331 uint32_t time = 0;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500332
Kristian Høgsberga8873122011-11-23 10:39:34 -0500333 ec = device->master->base.compositor;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500334 if (!ec->focus)
Kristian Høgsbergb1868472011-04-22 12:27:57 -0400335 return 1;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500336
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500337 len = read(fd, &ev, sizeof ev);
338 if (len < 0 || len % sizeof e[0] != 0) {
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400339 /* FIXME: call device_removed when errno is ENODEV. */;
Kristian Høgsbergb1868472011-04-22 12:27:57 -0400340 return 1;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500341 }
342
343 e = ev;
344 end = (void *) ev + len;
345 for (e = ev; e < end; e++) {
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500346 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
347
Tiago Vignatti52e158d2011-11-18 14:56:58 +0200348 /* we try to minimize the amount of notifications to be
349 * forwarded to the compositor, so we accumulate motion
350 * events and send as a bunch */
Tiago Vignatti80885e12011-11-21 17:59:31 +0200351 if (!is_motion_event(e))
Kristian Høgsberg39373542011-12-21 22:18:36 -0500352 evdev_flush_motion(device, time);
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500353 switch (e->type) {
354 case EV_REL:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500355 evdev_process_relative_motion(device, e);
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500356 break;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500357 case EV_ABS:
Kristian Høgsberg39373542011-12-21 22:18:36 -0500358 evdev_process_absolute(device, e);
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500359 break;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500360 case EV_KEY:
Tiago Vignatti8755ff92011-11-10 14:47:30 +0200361 evdev_process_key(device, e, time);
362 break;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500363 }
364 }
365
Kristian Høgsberg39373542011-12-21 22:18:36 -0500366 evdev_flush_motion(device, time);
Kristian Høgsbergb1868472011-04-22 12:27:57 -0400367
368 return 1;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500369}
370
Matt Peterson63900ec2011-08-01 13:46:29 -0600371
372/* copied from udev/extras/input_id/input_id.c */
373/* we must use this kernel-compatible implementation */
374#define BITS_PER_LONG (sizeof(unsigned long) * 8)
375#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
376#define OFF(x) ((x)%BITS_PER_LONG)
377#define BIT(x) (1UL<<OFF(x))
378#define LONG(x) ((x)/BITS_PER_LONG)
379#define TEST_BIT(array, bit) ((array[LONG(bit)] >> OFF(bit)) & 1)
380/* end copied */
Kristian Høgsberg96c8be92011-01-14 14:49:46 -0500381
Tiago Vignattic0827fd2011-08-19 17:07:40 +0300382static int
Tiago Vignattid9c82502011-08-19 15:06:20 +0300383evdev_configure_device(struct evdev_input_device *device)
384{
385 struct input_absinfo absinfo;
386 unsigned long ev_bits[NBITS(EV_MAX)];
387 unsigned long abs_bits[NBITS(ABS_MAX)];
388 unsigned long key_bits[NBITS(KEY_MAX)];
Tiago Vignattic0827fd2011-08-19 17:07:40 +0300389 int has_key, has_abs;
390
391 has_key = 0;
392 has_abs = 0;
Tiago Vignattid9c82502011-08-19 15:06:20 +0300393
394 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
395 if (TEST_BIT(ev_bits, EV_ABS)) {
Tiago Vignattic0827fd2011-08-19 17:07:40 +0300396 has_abs = 1;
Tiago Vignattia157fc12011-11-21 16:39:55 +0200397
Tiago Vignattid9c82502011-08-19 15:06:20 +0300398 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
399 abs_bits);
400 if (TEST_BIT(abs_bits, ABS_X)) {
401 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
Tiago Vignattia157fc12011-11-21 16:39:55 +0200402 device->abs.min_x = absinfo.minimum;
403 device->abs.max_x = absinfo.maximum;
Tiago Vignattid9c82502011-08-19 15:06:20 +0300404 }
405 if (TEST_BIT(abs_bits, ABS_Y)) {
406 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
Tiago Vignattia157fc12011-11-21 16:39:55 +0200407 device->abs.min_y = absinfo.minimum;
408 device->abs.max_y = absinfo.maximum;
Tiago Vignattid9c82502011-08-19 15:06:20 +0300409 }
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200410 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
411 device->is_mt = 1;
Kristian Høgsberg39373542011-12-21 22:18:36 -0500412 device->mt.slot = 0;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200413 }
Tiago Vignattid9c82502011-08-19 15:06:20 +0300414 }
415 if (TEST_BIT(ev_bits, EV_KEY)) {
Tiago Vignattic0827fd2011-08-19 17:07:40 +0300416 has_key = 1;
Tiago Vignattid9c82502011-08-19 15:06:20 +0300417 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
418 key_bits);
419 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
420 !TEST_BIT(key_bits, BTN_TOOL_PEN))
421 device->is_touchpad = 1;
422 }
Tiago Vignattic0827fd2011-08-19 17:07:40 +0300423
424 /* This rule tries to catch accelerometer devices and opt out. We may
425 * want to adjust the protocol later adding a proper event for dealing
426 * with accelerometers and implement here accordingly */
427 if (has_abs && !has_key)
428 return -1;
429
430 return 0;
Tiago Vignattid9c82502011-08-19 15:06:20 +0300431}
432
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500433static struct evdev_input_device *
434evdev_input_device_create(struct evdev_input *master,
435 struct wl_display *display, const char *path)
436{
437 struct evdev_input_device *device;
438 struct wl_event_loop *loop;
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500439 struct weston_compositor *ec;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500440
441 device = malloc(sizeof *device);
442 if (device == NULL)
443 return NULL;
444
Kristian Høgsberga8873122011-11-23 10:39:34 -0500445 ec = master->base.compositor;
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400446 device->output =
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500447 container_of(ec->output_list.next, struct weston_output, link);
Kristian Høgsberge7b5b412011-09-01 13:25:50 -0400448
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500449 device->master = master;
Matt Peterson63900ec2011-08-01 13:46:29 -0600450 device->is_touchpad = 0;
Tiago Vignatti22c6bce2011-12-21 19:34:09 +0200451 device->is_mt = 0;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400452 device->devnode = strdup(path);
Kristian Høgsberg39373542011-12-21 22:18:36 -0500453 device->mt.slot = -1;
454 device->rel.dx = 0;
455 device->rel.dy = 0;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500456
457 device->fd = open(path, O_RDONLY);
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400458 if (device->fd < 0)
459 goto err0;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500460
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400461 if (evdev_configure_device(device) == -1)
462 goto err1;
Kristian Høgsberg96c8be92011-01-14 14:49:46 -0500463
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500464 loop = wl_display_get_event_loop(display);
465 device->source = wl_event_loop_add_fd(loop, device->fd,
466 WL_EVENT_READABLE,
467 evdev_input_device_data, device);
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400468 if (device->source == NULL)
469 goto err1;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500470
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400471 wl_list_insert(master->devices_list.prev, &device->link);
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400472
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500473 return device;
Tiago Vignattiac9cfd32011-10-28 13:15:25 -0400474
475err1:
476 close(device->fd);
477err0:
478 free(device->devnode);
479 free(device);
480 return NULL;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500481}
482
Kristian Høgsberg86ec8e82011-07-19 16:10:11 -0700483static const char default_seat[] = "seat0";
484
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400485static void
486device_added(struct udev_device *udev_device, struct evdev_input *master)
487{
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500488 struct weston_compositor *c;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400489 const char *devnode;
490 const char *device_seat;
491
492 device_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
493 if (!device_seat)
494 device_seat = default_seat;
495
496 if (strcmp(device_seat, master->seat_id))
497 return;
498
Kristian Høgsberga8873122011-11-23 10:39:34 -0500499 c = master->base.compositor;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400500 devnode = udev_device_get_devnode(udev_device);
501 if (evdev_input_device_create(master, c->wl_display, devnode))
502 fprintf(stderr, "evdev input device: added: %s\n", devnode);
503}
504
505static void
506device_removed(struct udev_device *udev_device, struct evdev_input *master)
507{
508 const char *devnode = udev_device_get_devnode(udev_device);
509 struct evdev_input_device *device, *next;
510
511 wl_list_for_each_safe(device, next, &master->devices_list, link) {
512 if (!strcmp(device->devnode, devnode)) {
513 wl_event_source_remove(device->source);
514 wl_list_remove(&device->link);
515 close(device->fd);
516 free(device->devnode);
517 free(device);
518 break;
519 }
520 }
521 fprintf(stderr, "evdev input device: removed: %s\n", devnode);
522}
523
Tiago Vignatti6e2d5f12011-12-19 00:32:48 +0200524void
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500525evdev_add_devices(struct udev *udev, struct weston_input_device *input_base)
Tiago Vignatti0db1d5f2011-12-18 16:47:15 +0200526{
527 struct evdev_input *input = (struct evdev_input *) input_base;
528 struct udev_enumerate *e;
529 struct udev_list_entry *entry;
530 struct udev_device *device;
531 const char *path;
532
533 e = udev_enumerate_new(udev);
534 udev_enumerate_add_match_subsystem(e, "input");
535 udev_enumerate_scan_devices(e);
536 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
537 path = udev_list_entry_get_name(entry);
538 device = udev_device_new_from_syspath(udev, path);
539
540 if (strncmp("event", udev_device_get_sysname(device), 5) != 0)
541 continue;
542
543 device_added(device, input);
544
545 udev_device_unref(device);
546 }
547 udev_enumerate_unref(e);
Pekka Paalanenb07876d2012-01-05 16:41:21 +0200548
549 if (wl_list_empty(&input->devices_list)) {
550 fprintf(stderr,
551 "warning: no input devices on entering Weston. "
552 "Possible causes:\n"
553 "\t- no permissions to read /dev/input/evdev*\n"
554 "\t- seats misconfigured "
555 "(Weston backend option 'seat', "
556 "udev device property ID_SEAT)\n");
557 }
Tiago Vignatti0db1d5f2011-12-18 16:47:15 +0200558}
559
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400560static int
561evdev_udev_handler(int fd, uint32_t mask, void *data)
562{
563 struct evdev_input *master = data;
564 struct udev_device *udev_device;
565 const char *action;
566
567 udev_device = udev_monitor_receive_device(master->udev_monitor);
568 if (!udev_device)
569 return 1;
570
571 action = udev_device_get_action(udev_device);
572 if (action) {
573 if (strncmp("event", udev_device_get_sysname(udev_device), 5) != 0)
574 return 0;
575
576 if (!strcmp(action, "add")) {
577 device_added(udev_device, master);
578 }
579 else if (!strcmp(action, "remove"))
580 device_removed(udev_device, master);
581 }
582 udev_device_unref(udev_device);
583
584 return 0;
585}
586
587static int
588evdev_config_udev_monitor(struct udev *udev, struct evdev_input *master)
589{
590 struct wl_event_loop *loop;
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500591 struct weston_compositor *c = master->base.compositor;
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400592
593 master->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
Pekka Paalanenb07876d2012-01-05 16:41:21 +0200594 if (!master->udev_monitor) {
595 fprintf(stderr, "udev: failed to create the udev monitor\n");
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400596 return 0;
Pekka Paalanenb07876d2012-01-05 16:41:21 +0200597 }
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400598
599 udev_monitor_filter_add_match_subsystem_devtype(master->udev_monitor,
600 "input", NULL);
601
602 if (udev_monitor_enable_receiving(master->udev_monitor)) {
603 fprintf(stderr, "udev: failed to bind the udev monitor\n");
604 return 0;
605 }
606
607 loop = wl_display_get_event_loop(c->wl_display);
608 wl_event_loop_add_fd(loop, udev_monitor_get_fd(master->udev_monitor),
609 WL_EVENT_READABLE, evdev_udev_handler, master);
610
611 return 1;
612}
613
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500614void
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500615evdev_input_create(struct weston_compositor *c, struct udev *udev,
Tiago Vignattice03ec32011-12-19 01:14:03 +0200616 const char *seat)
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500617{
618 struct evdev_input *input;
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500619
620 input = malloc(sizeof *input);
621 if (input == NULL)
622 return;
623
624 memset(input, 0, sizeof *input);
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500625 weston_input_device_init(&input->base, c);
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500626
Tiago Vignattiac2dc6a2011-10-28 13:05:06 -0400627 wl_list_init(&input->devices_list);
628 input->seat_id = strdup(seat);
629 if (!evdev_config_udev_monitor(udev, input)) {
630 free(input->seat_id);
631 free(input);
632 return;
633 }
634
Tiago Vignatti0db1d5f2011-12-18 16:47:15 +0200635 evdev_add_devices(udev, &input->base);
Kristian Høgsberg43db4012011-01-14 14:45:42 -0500636
637 c->input_device = &input->base.input_device;
638}
Tiago Vignattic349e1d2011-12-18 23:52:18 +0200639
Tiago Vignatti6e2d5f12011-12-19 00:32:48 +0200640void
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500641evdev_remove_devices(struct weston_input_device *input_base)
Tiago Vignattic349e1d2011-12-18 23:52:18 +0200642{
643 struct evdev_input *input = (struct evdev_input *) input_base;
644 struct evdev_input_device *device, *next;
645
646 wl_list_for_each_safe(device, next, &input->devices_list, link) {
647 fprintf(stderr, "evdev input device: removed: %s\n", device->devnode);
648 wl_event_source_remove(device->source);
649 wl_list_remove(&device->link);
650 close(device->fd);
651 free(device->devnode);
652 free(device);
653 }
654}
655
656void
Kristian Høgsberg8334bc12012-01-03 10:29:47 -0500657evdev_input_destroy(struct weston_input_device *input_base)
Tiago Vignattic349e1d2011-12-18 23:52:18 +0200658{
659 struct evdev_input *input = (struct evdev_input *) input_base;
660
661 evdev_remove_devices(input_base);
662 wl_list_remove(&input->base.link);
663 free(input->seat_id);
664 free(input);
665}