2 * Copyright © 2010 Intel Corporation
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.
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.
25 #include <linux/input.h>
30 #include "compositor.h"
34 evdev_led_update(struct evdev_device *device, enum weston_led leds)
37 enum weston_led weston;
40 { LED_NUM_LOCK, LED_NUML },
41 { LED_CAPS_LOCK, LED_CAPSL },
42 { LED_SCROLL_LOCK, LED_SCROLLL },
44 struct input_event ev[ARRAY_LENGTH(map)];
47 if (!device->caps & EVDEV_KEYBOARD)
50 memset(ev, 0, sizeof(ev));
51 for (i = 0; i < ARRAY_LENGTH(map); i++) {
53 ev[i].code = map[i].evdev;
54 ev[i].value = !!(leds & map[i].weston);
57 i = write(device->fd, ev, sizeof ev);
58 (void)i; /* no, we really don't care about the return value */
62 evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
76 notify_button(device->seat,
78 e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
79 WL_POINTER_BUTTON_STATE_RELEASED);
83 notify_key(device->seat,
85 e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
86 WL_KEYBOARD_KEY_STATE_RELEASED,
87 STATE_UPDATE_AUTOMATIC);
93 evdev_process_touch(struct evdev_device *device, struct input_event *e)
95 const int screen_width = device->output->current->width;
96 const int screen_height = device->output->current->height;
100 device->mt.slot = e->value;
102 case ABS_MT_TRACKING_ID:
104 device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
106 device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
108 case ABS_MT_POSITION_X:
109 device->mt.x[device->mt.slot] =
110 (e->value - device->abs.min_x) * screen_width /
111 (device->abs.max_x - device->abs.min_x) +
113 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
115 case ABS_MT_POSITION_Y:
116 device->mt.y[device->mt.slot] =
117 (e->value - device->abs.min_y) * screen_height /
118 (device->abs.max_y - device->abs.min_y) +
120 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
126 evdev_process_absolute_motion(struct evdev_device *device,
127 struct input_event *e)
129 const int screen_width = device->output->current->width;
130 const int screen_height = device->output->current->height;
135 (e->value - device->abs.min_x) * screen_width /
136 (device->abs.max_x - device->abs.min_x) +
138 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
142 (e->value - device->abs.min_y) * screen_height /
143 (device->abs.max_y - device->abs.min_y) +
145 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
151 evdev_process_relative(struct evdev_device *device,
152 struct input_event *e, uint32_t time)
156 device->rel.dx += wl_fixed_from_int(e->value);
157 device->pending_events |= EVDEV_RELATIVE_MOTION;
160 device->rel.dy += wl_fixed_from_int(e->value);
161 device->pending_events |= EVDEV_RELATIVE_MOTION;
164 notify_axis(device->seat,
166 WL_POINTER_AXIS_VERTICAL_SCROLL,
167 wl_fixed_from_int(e->value));
170 notify_axis(device->seat,
172 WL_POINTER_AXIS_HORIZONTAL_SCROLL,
173 wl_fixed_from_int(e->value));
179 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
182 evdev_process_touch(device, e);
184 evdev_process_absolute_motion(device, e);
189 is_motion_event(struct input_event *e)
203 case ABS_MT_POSITION_X:
204 case ABS_MT_POSITION_Y:
213 evdev_flush_motion(struct evdev_device *device, uint32_t time)
215 struct weston_seat *master = device->seat;
217 if (!device->pending_events)
220 if (device->pending_events & EVDEV_RELATIVE_MOTION) {
221 notify_motion(master, time,
222 master->seat.pointer->x + device->rel.dx,
223 master->seat.pointer->y + device->rel.dy);
224 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
228 if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
229 notify_touch(master, time,
231 wl_fixed_from_int(device->mt.x[device->mt.slot]),
232 wl_fixed_from_int(device->mt.y[device->mt.slot]),
234 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
235 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
237 if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
238 notify_touch(master, time,
240 wl_fixed_from_int(device->mt.x[device->mt.slot]),
241 wl_fixed_from_int(device->mt.y[device->mt.slot]),
243 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
244 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
246 if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
247 notify_touch(master, time, device->mt.slot, 0, 0,
249 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
251 if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
252 notify_motion(master, time,
253 wl_fixed_from_int(device->abs.x),
254 wl_fixed_from_int(device->abs.y));
255 device->pending_events &= ~EVDEV_ABSOLUTE_MOTION;
260 fallback_process(struct evdev_dispatch *dispatch,
261 struct evdev_device *device,
262 struct input_event *event,
265 switch (event->type) {
267 evdev_process_relative(device, event, time);
270 evdev_process_absolute(device, event);
273 evdev_process_key(device, event, time);
279 fallback_destroy(struct evdev_dispatch *dispatch)
284 struct evdev_dispatch_interface fallback_interface = {
289 static struct evdev_dispatch *
290 fallback_dispatch_create(void)
292 struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
293 if (dispatch == NULL)
296 dispatch->interface = &fallback_interface;
302 evdev_process_events(struct evdev_device *device,
303 struct input_event *ev, int count)
305 struct evdev_dispatch *dispatch = device->dispatch;
306 struct input_event *e, *end;
309 device->pending_events = 0;
313 for (e = ev; e < end; e++) {
314 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
316 /* we try to minimize the amount of notifications to be
317 * forwarded to the compositor, so we accumulate motion
318 * events and send as a bunch */
319 if (!is_motion_event(e))
320 evdev_flush_motion(device, time);
322 dispatch->interface->process(dispatch, device, e, time);
325 evdev_flush_motion(device, time);
329 evdev_device_data(int fd, uint32_t mask, void *data)
331 struct weston_compositor *ec;
332 struct evdev_device *device = data;
333 struct input_event ev[32];
336 ec = device->seat->compositor;
340 /* If the compositor is repainting, this function is called only once
341 * per frame and we have to process all the events available on the
342 * fd, otherwise there will be input lag. */
345 len = mtdev_get(device->mtdev, fd, ev,
347 sizeof (struct input_event);
349 len = read(fd, &ev, sizeof ev);
351 if (len < 0 || len % sizeof ev[0] != 0) {
352 /* FIXME: call evdev_device_destroy when errno is ENODEV. */
356 evdev_process_events(device, ev, len / sizeof ev[0]);
364 evdev_configure_device(struct evdev_device *device)
366 struct input_absinfo absinfo;
367 unsigned long ev_bits[NBITS(EV_MAX)];
368 unsigned long abs_bits[NBITS(ABS_MAX)];
369 unsigned long rel_bits[NBITS(REL_MAX)];
370 unsigned long key_bits[NBITS(KEY_MAX)];
371 int has_key, has_abs;
378 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
379 if (TEST_BIT(ev_bits, EV_ABS)) {
382 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
384 if (TEST_BIT(abs_bits, ABS_X)) {
385 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
386 device->abs.min_x = absinfo.minimum;
387 device->abs.max_x = absinfo.maximum;
388 device->caps |= EVDEV_MOTION_ABS;
390 if (TEST_BIT(abs_bits, ABS_Y)) {
391 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
392 device->abs.min_y = absinfo.minimum;
393 device->abs.max_y = absinfo.maximum;
394 device->caps |= EVDEV_MOTION_ABS;
396 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
397 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
399 device->abs.min_x = absinfo.minimum;
400 device->abs.max_x = absinfo.maximum;
401 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
403 device->abs.min_y = absinfo.minimum;
404 device->abs.max_y = absinfo.maximum;
407 device->caps |= EVDEV_TOUCH;
410 if (TEST_BIT(ev_bits, EV_REL)) {
411 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
413 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
414 device->caps |= EVDEV_MOTION_REL;
416 if (TEST_BIT(ev_bits, EV_KEY)) {
418 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
420 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
421 !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
423 device->dispatch = evdev_touchpad_create(device);
424 for (i = KEY_ESC; i < KEY_MAX; i++) {
425 if (i >= BTN_MISC && i < KEY_OK)
427 if (TEST_BIT(key_bits, i)) {
428 device->caps |= EVDEV_KEYBOARD;
432 for (i = BTN_MISC; i < KEY_OK; i++) {
433 if (TEST_BIT(key_bits, i)) {
434 device->caps |= EVDEV_BUTTON;
439 if (TEST_BIT(ev_bits, EV_LED)) {
440 device->caps |= EVDEV_KEYBOARD;
443 /* This rule tries to catch accelerometer devices and opt out. We may
444 * want to adjust the protocol later adding a proper event for dealing
445 * with accelerometers and implement here accordingly */
446 if (has_abs && !has_key && !device->is_mt) {
447 weston_log("input device %s, %s "
448 "ignored: unsupported device type\n",
449 device->devname, device->devnode);
454 (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
455 weston_seat_init_pointer(device->seat);
456 weston_log("input device %s, %s is a pointer\n",
457 device->devname, device->devnode);
459 if ((device->caps & EVDEV_KEYBOARD)) {
460 weston_seat_init_keyboard(device->seat, NULL);
461 weston_log("input device %s, %s is a keyboard\n",
462 device->devname, device->devnode);
464 if ((device->caps & EVDEV_TOUCH)) {
465 weston_seat_init_touch(device->seat);
466 weston_log("input device %s, %s is a touch device\n",
467 device->devname, device->devnode);
473 struct evdev_device *
474 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
476 struct evdev_device *device;
477 struct weston_compositor *ec;
478 char devname[256] = "unknown";
480 device = malloc(sizeof *device);
483 memset(device, 0, sizeof *device);
485 ec = seat->compositor;
487 container_of(ec->output_list.next, struct weston_output, link);
491 device->mtdev = NULL;
492 device->devnode = strdup(path);
493 device->mt.slot = -1;
496 device->dispatch = NULL;
497 device->fd = device_fd;
499 ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
500 device->devname = strdup(devname);
502 if (evdev_configure_device(device) == -1)
505 /* If the dispatch was not set up use the fallback. */
506 if (device->dispatch == NULL)
507 device->dispatch = fallback_dispatch_create();
508 if (device->dispatch == NULL)
513 device->mtdev = mtdev_new_open(device->fd);
515 weston_log("mtdev failed to open for %s\n", path);
518 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
520 evdev_device_data, device);
521 if (device->source == NULL)
527 device->dispatch->interface->destroy(device->dispatch);
529 free(device->devname);
530 free(device->devnode);
536 evdev_device_destroy(struct evdev_device *device)
538 struct evdev_dispatch *dispatch;
540 dispatch = device->dispatch;
542 dispatch->interface->destroy(dispatch);
544 wl_event_source_remove(device->source);
545 wl_list_remove(&device->link);
547 mtdev_close_delete(device->mtdev);
549 free(device->devname);
550 free(device->devnode);
555 evdev_notify_keyboard_focus(struct weston_seat *seat,
556 struct wl_list *evdev_devices)
558 struct evdev_device *device;
559 struct wl_array keys;
561 char evdev_keys[(KEY_CNT + 7) / 8];
562 char all_keys[(KEY_CNT + 7) / 8];
566 if (!seat->seat.keyboard)
569 memset(all_keys, 0, sizeof all_keys);
570 wl_list_for_each(device, evdev_devices, link) {
571 memset(evdev_keys, 0, sizeof evdev_keys);
572 ret = ioctl(device->fd,
573 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
575 weston_log("failed to get keys for device %s\n",
579 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
580 all_keys[i] |= evdev_keys[i];
583 wl_array_init(&keys);
584 for (i = 0; i < KEY_CNT; i++) {
585 set = all_keys[i >> 3] & (1 << (i & 7));
587 k = wl_array_add(&keys, sizeof *k);
592 notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
594 wl_array_release(&keys);