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"
33 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
36 evdev_led_update(struct evdev_device *device, enum weston_led leds)
39 enum weston_led weston;
42 { LED_NUM_LOCK, LED_NUML },
43 { LED_CAPS_LOCK, LED_CAPSL },
44 { LED_SCROLL_LOCK, LED_SCROLLL },
46 struct input_event ev[ARRAY_LENGTH(map)];
49 if (!device->caps & EVDEV_KEYBOARD)
52 memset(ev, 0, sizeof(ev));
53 for (i = 0; i < ARRAY_LENGTH(map); i++) {
55 ev[i].code = map[i].evdev;
56 ev[i].value = !!(leds & map[i].weston);
59 i = write(device->fd, ev, sizeof ev);
60 (void)i; /* no, we really don't care about the return value */
64 evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
78 notify_button(device->seat,
80 e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
81 WL_POINTER_BUTTON_STATE_RELEASED);
85 notify_key(device->seat,
87 e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
88 WL_KEYBOARD_KEY_STATE_RELEASED,
89 STATE_UPDATE_AUTOMATIC);
95 evdev_process_touch(struct evdev_device *device, struct input_event *e)
97 const int screen_width = device->output->current->width;
98 const int screen_height = device->output->current->height;
102 device->mt.slot = e->value;
104 case ABS_MT_TRACKING_ID:
106 device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
108 device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
110 case ABS_MT_POSITION_X:
111 device->mt.x[device->mt.slot] =
112 (e->value - device->abs.min_x) * screen_width /
113 (device->abs.max_x - device->abs.min_x) +
115 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
117 case ABS_MT_POSITION_Y:
118 device->mt.y[device->mt.slot] =
119 (e->value - device->abs.min_y) * screen_height /
120 (device->abs.max_y - device->abs.min_y) +
122 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
128 evdev_process_absolute_motion(struct evdev_device *device,
129 struct input_event *e)
131 const int screen_width = device->output->current->width;
132 const int screen_height = device->output->current->height;
137 (e->value - device->abs.min_x) * screen_width /
138 (device->abs.max_x - device->abs.min_x) +
140 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
144 (e->value - device->abs.min_y) * screen_height /
145 (device->abs.max_y - device->abs.min_y) +
147 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
153 evdev_process_relative(struct evdev_device *device,
154 struct input_event *e, uint32_t time)
158 device->rel.dx += wl_fixed_from_int(e->value);
159 device->pending_events |= EVDEV_RELATIVE_MOTION;
162 device->rel.dy += wl_fixed_from_int(e->value);
163 device->pending_events |= EVDEV_RELATIVE_MOTION;
171 notify_axis(device->seat,
173 WL_POINTER_AXIS_VERTICAL_SCROLL,
174 -1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
186 notify_axis(device->seat,
188 WL_POINTER_AXIS_HORIZONTAL_SCROLL,
189 e->value * DEFAULT_AXIS_STEP_DISTANCE);
199 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
202 evdev_process_touch(device, e);
204 evdev_process_absolute_motion(device, e);
209 is_motion_event(struct input_event *e)
223 case ABS_MT_POSITION_X:
224 case ABS_MT_POSITION_Y:
233 evdev_flush_motion(struct evdev_device *device, uint32_t time)
235 struct weston_seat *master = device->seat;
237 if (!device->pending_events)
240 if (device->pending_events & EVDEV_RELATIVE_MOTION) {
241 notify_motion(master, time,
242 master->seat.pointer->x + device->rel.dx,
243 master->seat.pointer->y + device->rel.dy);
244 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
248 if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
249 notify_touch(master, time,
251 wl_fixed_from_int(device->mt.x[device->mt.slot]),
252 wl_fixed_from_int(device->mt.y[device->mt.slot]),
254 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
255 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
257 if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
258 notify_touch(master, time,
260 wl_fixed_from_int(device->mt.x[device->mt.slot]),
261 wl_fixed_from_int(device->mt.y[device->mt.slot]),
263 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
264 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
266 if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
267 notify_touch(master, time, device->mt.slot, 0, 0,
269 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
271 if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
272 notify_motion(master, time,
273 wl_fixed_from_int(device->abs.x),
274 wl_fixed_from_int(device->abs.y));
275 device->pending_events &= ~EVDEV_ABSOLUTE_MOTION;
280 fallback_process(struct evdev_dispatch *dispatch,
281 struct evdev_device *device,
282 struct input_event *event,
285 switch (event->type) {
287 evdev_process_relative(device, event, time);
290 evdev_process_absolute(device, event);
293 evdev_process_key(device, event, time);
299 fallback_destroy(struct evdev_dispatch *dispatch)
304 struct evdev_dispatch_interface fallback_interface = {
309 static struct evdev_dispatch *
310 fallback_dispatch_create(void)
312 struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
313 if (dispatch == NULL)
316 dispatch->interface = &fallback_interface;
322 evdev_process_events(struct evdev_device *device,
323 struct input_event *ev, int count)
325 struct evdev_dispatch *dispatch = device->dispatch;
326 struct input_event *e, *end;
329 device->pending_events = 0;
333 for (e = ev; e < end; e++) {
334 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
336 /* we try to minimize the amount of notifications to be
337 * forwarded to the compositor, so we accumulate motion
338 * events and send as a bunch */
339 if (!is_motion_event(e))
340 evdev_flush_motion(device, time);
342 dispatch->interface->process(dispatch, device, e, time);
345 evdev_flush_motion(device, time);
349 evdev_device_data(int fd, uint32_t mask, void *data)
351 struct weston_compositor *ec;
352 struct evdev_device *device = data;
353 struct input_event ev[32];
356 ec = device->seat->compositor;
360 /* If the compositor is repainting, this function is called only once
361 * per frame and we have to process all the events available on the
362 * fd, otherwise there will be input lag. */
365 len = mtdev_get(device->mtdev, fd, ev,
367 sizeof (struct input_event);
369 len = read(fd, &ev, sizeof ev);
371 if (len < 0 || len % sizeof ev[0] != 0) {
372 /* FIXME: call evdev_device_destroy when errno is ENODEV. */
376 evdev_process_events(device, ev, len / sizeof ev[0]);
384 evdev_configure_device(struct evdev_device *device)
386 struct input_absinfo absinfo;
387 unsigned long ev_bits[NBITS(EV_MAX)];
388 unsigned long abs_bits[NBITS(ABS_MAX)];
389 unsigned long rel_bits[NBITS(REL_MAX)];
390 unsigned long key_bits[NBITS(KEY_MAX)];
391 int has_key, has_abs;
398 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
399 if (TEST_BIT(ev_bits, EV_ABS)) {
402 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
404 if (TEST_BIT(abs_bits, ABS_X)) {
405 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
406 device->abs.min_x = absinfo.minimum;
407 device->abs.max_x = absinfo.maximum;
408 device->caps |= EVDEV_MOTION_ABS;
410 if (TEST_BIT(abs_bits, ABS_Y)) {
411 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
412 device->abs.min_y = absinfo.minimum;
413 device->abs.max_y = absinfo.maximum;
414 device->caps |= EVDEV_MOTION_ABS;
416 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
417 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
419 device->abs.min_x = absinfo.minimum;
420 device->abs.max_x = absinfo.maximum;
421 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
423 device->abs.min_y = absinfo.minimum;
424 device->abs.max_y = absinfo.maximum;
427 device->caps |= EVDEV_TOUCH;
430 if (TEST_BIT(ev_bits, EV_REL)) {
431 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
433 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
434 device->caps |= EVDEV_MOTION_REL;
436 if (TEST_BIT(ev_bits, EV_KEY)) {
438 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
440 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
441 !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
443 device->dispatch = evdev_touchpad_create(device);
444 for (i = KEY_ESC; i < KEY_MAX; i++) {
445 if (i >= BTN_MISC && i < KEY_OK)
447 if (TEST_BIT(key_bits, i)) {
448 device->caps |= EVDEV_KEYBOARD;
452 for (i = BTN_MISC; i < KEY_OK; i++) {
453 if (TEST_BIT(key_bits, i)) {
454 device->caps |= EVDEV_BUTTON;
459 if (TEST_BIT(ev_bits, EV_LED)) {
460 device->caps |= EVDEV_KEYBOARD;
463 /* This rule tries to catch accelerometer devices and opt out. We may
464 * want to adjust the protocol later adding a proper event for dealing
465 * with accelerometers and implement here accordingly */
466 if (has_abs && !has_key && !device->is_mt) {
467 weston_log("input device %s, %s "
468 "ignored: unsupported device type\n",
469 device->devname, device->devnode);
474 (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
475 weston_seat_init_pointer(device->seat);
476 weston_log("input device %s, %s is a pointer\n",
477 device->devname, device->devnode);
479 if ((device->caps & EVDEV_KEYBOARD)) {
480 weston_seat_init_keyboard(device->seat, NULL);
481 weston_log("input device %s, %s is a keyboard\n",
482 device->devname, device->devnode);
484 if ((device->caps & EVDEV_TOUCH)) {
485 weston_seat_init_touch(device->seat);
486 weston_log("input device %s, %s is a touch device\n",
487 device->devname, device->devnode);
493 struct evdev_device *
494 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
496 struct evdev_device *device;
497 struct weston_compositor *ec;
498 char devname[256] = "unknown";
500 device = malloc(sizeof *device);
503 memset(device, 0, sizeof *device);
505 ec = seat->compositor;
507 container_of(ec->output_list.next, struct weston_output, link);
511 device->mtdev = NULL;
512 device->devnode = strdup(path);
513 device->mt.slot = -1;
516 device->dispatch = NULL;
517 device->fd = device_fd;
519 ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
520 device->devname = strdup(devname);
522 if (evdev_configure_device(device) == -1)
525 /* If the dispatch was not set up use the fallback. */
526 if (device->dispatch == NULL)
527 device->dispatch = fallback_dispatch_create();
528 if (device->dispatch == NULL)
533 device->mtdev = mtdev_new_open(device->fd);
535 weston_log("mtdev failed to open for %s\n", path);
538 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
540 evdev_device_data, device);
541 if (device->source == NULL)
547 device->dispatch->interface->destroy(device->dispatch);
549 free(device->devname);
550 free(device->devnode);
556 evdev_device_destroy(struct evdev_device *device)
558 struct evdev_dispatch *dispatch;
560 dispatch = device->dispatch;
562 dispatch->interface->destroy(dispatch);
564 wl_event_source_remove(device->source);
565 wl_list_remove(&device->link);
567 mtdev_close_delete(device->mtdev);
569 free(device->devname);
570 free(device->devnode);
575 evdev_notify_keyboard_focus(struct weston_seat *seat,
576 struct wl_list *evdev_devices)
578 struct evdev_device *device;
579 struct wl_array keys;
581 char evdev_keys[(KEY_CNT + 7) / 8];
582 char all_keys[(KEY_CNT + 7) / 8];
586 if (!seat->seat.keyboard)
589 memset(all_keys, 0, sizeof all_keys);
590 wl_list_for_each(device, evdev_devices, link) {
591 memset(evdev_keys, 0, sizeof evdev_keys);
592 ret = ioctl(device->fd,
593 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
595 weston_log("failed to get keys for device %s\n",
599 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
600 all_keys[i] |= evdev_keys[i];
603 wl_array_init(&keys);
604 for (i = 0; i < KEY_CNT; i++) {
605 set = all_keys[i >> 3] & (1 << (i & 7));
607 k = wl_array_add(&keys, sizeof *k);
612 notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
614 wl_array_release(&keys);