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;
134 if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
138 (e->value - device->abs.min_y) * screen_height /
139 (device->abs.max_y - device->abs.min_y) +
141 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
145 (e->value - device->abs.min_x) * screen_width /
146 (device->abs.max_x - device->abs.min_x) +
148 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
156 (e->value - device->abs.min_x) * screen_width /
157 (device->abs.max_x - device->abs.min_x) +
159 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
163 (e->value - device->abs.min_y) * screen_height /
164 (device->abs.max_y - device->abs.min_y) +
166 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
173 evdev_process_relative(struct evdev_device *device,
174 struct input_event *e, uint32_t time)
178 device->rel.dx += wl_fixed_from_int(e->value);
179 device->pending_events |= EVDEV_RELATIVE_MOTION;
182 device->rel.dy += wl_fixed_from_int(e->value);
183 device->pending_events |= EVDEV_RELATIVE_MOTION;
191 notify_axis(device->seat,
193 WL_POINTER_AXIS_VERTICAL_SCROLL,
194 -1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
206 notify_axis(device->seat,
208 WL_POINTER_AXIS_HORIZONTAL_SCROLL,
209 e->value * DEFAULT_AXIS_STEP_DISTANCE);
219 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
222 evdev_process_touch(device, e);
224 evdev_process_absolute_motion(device, e);
229 is_motion_event(struct input_event *e)
243 case ABS_MT_POSITION_X:
244 case ABS_MT_POSITION_Y:
253 evdev_flush_motion(struct evdev_device *device, uint32_t time)
255 struct weston_seat *master = device->seat;
257 if (!(device->pending_events & EVDEV_SYN))
260 device->pending_events &= ~EVDEV_SYN;
261 if (device->pending_events & EVDEV_RELATIVE_MOTION) {
262 notify_motion(master, time,
263 master->seat.pointer->x + device->rel.dx,
264 master->seat.pointer->y + device->rel.dy);
265 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
269 if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
270 notify_touch(master, time,
272 wl_fixed_from_int(device->mt.x[device->mt.slot]),
273 wl_fixed_from_int(device->mt.y[device->mt.slot]),
275 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
276 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
278 if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
279 notify_touch(master, time,
281 wl_fixed_from_int(device->mt.x[device->mt.slot]),
282 wl_fixed_from_int(device->mt.y[device->mt.slot]),
284 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
285 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
287 if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
288 notify_touch(master, time, device->mt.slot, 0, 0,
290 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
292 if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
293 notify_motion(master, time,
294 wl_fixed_from_int(device->abs.x),
295 wl_fixed_from_int(device->abs.y));
296 device->pending_events &= ~EVDEV_ABSOLUTE_MOTION;
301 fallback_process(struct evdev_dispatch *dispatch,
302 struct evdev_device *device,
303 struct input_event *event,
306 switch (event->type) {
308 evdev_process_relative(device, event, time);
311 evdev_process_absolute(device, event);
314 evdev_process_key(device, event, time);
317 device->pending_events |= EVDEV_SYN;
323 fallback_destroy(struct evdev_dispatch *dispatch)
328 struct evdev_dispatch_interface fallback_interface = {
333 static struct evdev_dispatch *
334 fallback_dispatch_create(void)
336 struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
337 if (dispatch == NULL)
340 dispatch->interface = &fallback_interface;
346 evdev_process_events(struct evdev_device *device,
347 struct input_event *ev, int count)
349 struct evdev_dispatch *dispatch = device->dispatch;
350 struct input_event *e, *end;
353 device->pending_events = 0;
357 for (e = ev; e < end; e++) {
358 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
360 /* we try to minimize the amount of notifications to be
361 * forwarded to the compositor, so we accumulate motion
362 * events and send as a bunch */
363 if (!is_motion_event(e))
364 evdev_flush_motion(device, time);
366 dispatch->interface->process(dispatch, device, e, time);
369 evdev_flush_motion(device, time);
373 evdev_device_data(int fd, uint32_t mask, void *data)
375 struct weston_compositor *ec;
376 struct evdev_device *device = data;
377 struct input_event ev[32];
380 ec = device->seat->compositor;
384 /* If the compositor is repainting, this function is called only once
385 * per frame and we have to process all the events available on the
386 * fd, otherwise there will be input lag. */
389 len = mtdev_get(device->mtdev, fd, ev,
391 sizeof (struct input_event);
393 len = read(fd, &ev, sizeof ev);
395 if (len < 0 || len % sizeof ev[0] != 0) {
396 /* FIXME: call evdev_device_destroy when errno is ENODEV. */
400 evdev_process_events(device, ev, len / sizeof ev[0]);
408 evdev_handle_device(struct evdev_device *device)
410 struct input_absinfo absinfo;
411 unsigned long ev_bits[NBITS(EV_MAX)];
412 unsigned long abs_bits[NBITS(ABS_MAX)];
413 unsigned long rel_bits[NBITS(REL_MAX)];
414 unsigned long key_bits[NBITS(KEY_MAX)];
415 int has_key, has_abs;
422 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
423 if (TEST_BIT(ev_bits, EV_ABS)) {
426 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
428 if (TEST_BIT(abs_bits, ABS_X)) {
429 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
430 device->abs.min_x = absinfo.minimum;
431 device->abs.max_x = absinfo.maximum;
432 device->caps |= EVDEV_MOTION_ABS;
434 if (TEST_BIT(abs_bits, ABS_Y)) {
435 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
436 device->abs.min_y = absinfo.minimum;
437 device->abs.max_y = absinfo.maximum;
438 device->caps |= EVDEV_MOTION_ABS;
440 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
441 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
443 if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
444 device->abs.min_y = absinfo.minimum;
445 device->abs.max_y = absinfo.maximum;
447 device->abs.min_x = absinfo.minimum;
448 device->abs.max_x = absinfo.maximum;
450 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
452 if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
453 device->abs.min_x = absinfo.minimum;
454 device->abs.max_x = absinfo.maximum;
456 device->abs.min_y = absinfo.minimum;
457 device->abs.max_y = absinfo.maximum;
461 device->caps |= EVDEV_TOUCH;
464 if (TEST_BIT(ev_bits, EV_REL)) {
465 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
467 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
468 device->caps |= EVDEV_MOTION_REL;
470 if (TEST_BIT(ev_bits, EV_KEY)) {
472 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
474 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
475 !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
477 device->dispatch = evdev_touchpad_create(device);
478 for (i = KEY_ESC; i < KEY_MAX; i++) {
479 if (i >= BTN_MISC && i < KEY_OK)
481 if (TEST_BIT(key_bits, i)) {
482 device->caps |= EVDEV_KEYBOARD;
486 for (i = BTN_MISC; i < KEY_OK; i++) {
487 if (TEST_BIT(key_bits, i)) {
488 device->caps |= EVDEV_BUTTON;
493 if (TEST_BIT(ev_bits, EV_LED)) {
494 device->caps |= EVDEV_KEYBOARD;
497 /* This rule tries to catch accelerometer devices and opt out. We may
498 * want to adjust the protocol later adding a proper event for dealing
499 * with accelerometers and implement here accordingly */
500 if (has_abs && !has_key && !device->is_mt) {
501 weston_log("input device %s, %s "
502 "ignored: unsupported device type\n",
503 device->devname, device->devnode);
511 evdev_configure_device(struct evdev_device *device)
514 (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
515 weston_seat_init_pointer(device->seat);
516 weston_log("input device %s, %s is a pointer\n",
517 device->devname, device->devnode);
519 if ((device->caps & EVDEV_KEYBOARD)) {
520 if (weston_seat_init_keyboard(device->seat, NULL) < 0)
522 weston_log("input device %s, %s is a keyboard\n",
523 device->devname, device->devnode);
525 if ((device->caps & EVDEV_TOUCH)) {
526 weston_seat_init_touch(device->seat);
527 weston_log("input device %s, %s is a touch device\n",
528 device->devname, device->devnode);
534 struct evdev_device *
535 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
537 struct evdev_device *device;
538 struct weston_compositor *ec;
539 char devname[256] = "unknown";
541 device = malloc(sizeof *device);
544 memset(device, 0, sizeof *device);
546 ec = seat->compositor;
548 container_of(ec->output_list.next, struct weston_output, link);
552 device->mtdev = NULL;
553 device->devnode = strdup(path);
554 device->mt.slot = -1;
557 device->dispatch = NULL;
558 device->fd = device_fd;
560 ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
561 device->devname = strdup(devname);
563 if (!evdev_handle_device(device)) {
564 free(device->devnode);
565 free(device->devname);
567 return EVDEV_UNHANDLED_DEVICE;
570 if (evdev_configure_device(device) == -1)
573 /* If the dispatch was not set up use the fallback. */
574 if (device->dispatch == NULL)
575 device->dispatch = fallback_dispatch_create();
576 if (device->dispatch == NULL)
581 device->mtdev = mtdev_new_open(device->fd);
583 weston_log("mtdev failed to open for %s\n", path);
586 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
588 evdev_device_data, device);
589 if (device->source == NULL)
595 device->dispatch->interface->destroy(device->dispatch);
597 free(device->devname);
598 free(device->devnode);
604 evdev_device_destroy(struct evdev_device *device)
606 struct evdev_dispatch *dispatch;
608 dispatch = device->dispatch;
610 dispatch->interface->destroy(dispatch);
612 wl_event_source_remove(device->source);
613 wl_list_remove(&device->link);
615 mtdev_close_delete(device->mtdev);
617 free(device->devname);
618 free(device->devnode);
623 evdev_notify_keyboard_focus(struct weston_seat *seat,
624 struct wl_list *evdev_devices)
626 struct evdev_device *device;
627 struct wl_array keys;
629 char evdev_keys[(KEY_CNT + 7) / 8];
630 char all_keys[(KEY_CNT + 7) / 8];
634 if (!seat->seat.keyboard)
637 memset(all_keys, 0, sizeof all_keys);
638 wl_list_for_each(device, evdev_devices, link) {
639 memset(evdev_keys, 0, sizeof evdev_keys);
640 ret = ioctl(device->fd,
641 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
643 weston_log("failed to get keys for device %s\n",
647 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
648 all_keys[i] |= evdev_keys[i];
651 wl_array_init(&keys);
652 for (i = 0; i < KEY_CNT; i++) {
653 set = all_keys[i >> 3] & (1 << (i & 7));
655 k = wl_array_add(&keys, sizeof *k);
660 notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
662 wl_array_release(&keys);