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.
27 #include <linux/input.h>
32 #include "compositor.h"
35 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
38 evdev_led_update(struct evdev_device *device, enum weston_led leds)
41 enum weston_led weston;
44 { LED_NUM_LOCK, LED_NUML },
45 { LED_CAPS_LOCK, LED_CAPSL },
46 { LED_SCROLL_LOCK, LED_SCROLLL },
48 struct input_event ev[ARRAY_LENGTH(map)];
51 if (!device->caps & EVDEV_KEYBOARD)
54 memset(ev, 0, sizeof(ev));
55 for (i = 0; i < ARRAY_LENGTH(map); i++) {
57 ev[i].code = map[i].evdev;
58 ev[i].value = !!(leds & map[i].weston);
61 i = write(device->fd, ev, sizeof ev);
62 (void)i; /* no, we really don't care about the return value */
66 evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
80 notify_button(device->seat,
82 e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
83 WL_POINTER_BUTTON_STATE_RELEASED);
87 notify_key(device->seat,
89 e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
90 WL_KEYBOARD_KEY_STATE_RELEASED,
91 STATE_UPDATE_AUTOMATIC);
97 evdev_process_touch(struct evdev_device *device, struct input_event *e)
99 const int screen_width = device->output->current->width;
100 const int screen_height = device->output->current->height;
104 device->mt.slot = e->value;
106 case ABS_MT_TRACKING_ID:
108 device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
110 device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
112 case ABS_MT_POSITION_X:
113 device->mt.x[device->mt.slot] =
114 (e->value - device->abs.min_x) * screen_width /
115 (device->abs.max_x - device->abs.min_x);
116 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
118 case ABS_MT_POSITION_Y:
119 device->mt.y[device->mt.slot] =
120 (e->value - device->abs.min_y) * screen_height /
121 (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 transform_absolute(struct evdev_device *device)
235 if (!device->abs.apply_calibration)
238 device->abs.x = device->abs.x * device->abs.calibration[0] +
239 device->abs.y * device->abs.calibration[1] +
240 device->abs.calibration[2];
242 device->abs.y = device->abs.x * device->abs.calibration[3] +
243 device->abs.y * device->abs.calibration[4] +
244 device->abs.calibration[5];
248 evdev_flush_motion(struct evdev_device *device, uint32_t time)
250 struct weston_seat *master = device->seat;
254 if (!(device->pending_events & EVDEV_SYN))
257 slot = device->mt.slot;
258 device->pending_events &= ~EVDEV_SYN;
259 if (device->pending_events & EVDEV_RELATIVE_MOTION) {
260 notify_motion(master, time, device->rel.dx, device->rel.dy);
261 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
265 if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
266 weston_output_transform_coordinate(device->output,
270 notify_touch(master, time,
271 device->mt.slot, x, y, WL_TOUCH_DOWN);
272 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
273 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
275 if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
276 weston_output_transform_coordinate(device->output,
280 notify_touch(master, time,
281 device->mt.slot, x, y, WL_TOUCH_MOTION);
282 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
283 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
285 if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
286 notify_touch(master, time, device->mt.slot, 0, 0,
288 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
290 if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
291 transform_absolute(device);
292 weston_output_transform_coordinate(device->output,
294 device->abs.y, &x, &y);
295 notify_motion_absolute(master, time, x, 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 device->abs.min_x = absinfo.minimum;
444 device->abs.max_x = absinfo.maximum;
445 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
447 device->abs.min_y = absinfo.minimum;
448 device->abs.max_y = absinfo.maximum;
451 device->caps |= EVDEV_TOUCH;
454 if (TEST_BIT(ev_bits, EV_REL)) {
455 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
457 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
458 device->caps |= EVDEV_MOTION_REL;
460 if (TEST_BIT(ev_bits, EV_KEY)) {
462 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
464 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
465 !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
467 device->dispatch = evdev_touchpad_create(device);
468 for (i = KEY_ESC; i < KEY_MAX; i++) {
469 if (i >= BTN_MISC && i < KEY_OK)
471 if (TEST_BIT(key_bits, i)) {
472 device->caps |= EVDEV_KEYBOARD;
476 for (i = BTN_MISC; i < KEY_OK; i++) {
477 if (TEST_BIT(key_bits, i)) {
478 device->caps |= EVDEV_BUTTON;
483 if (TEST_BIT(ev_bits, EV_LED)) {
484 device->caps |= EVDEV_KEYBOARD;
487 /* This rule tries to catch accelerometer devices and opt out. We may
488 * want to adjust the protocol later adding a proper event for dealing
489 * with accelerometers and implement here accordingly */
490 if (has_abs && !has_key && !device->is_mt) {
491 weston_log("input device %s, %s "
492 "ignored: unsupported device type\n",
493 device->devname, device->devnode);
501 evdev_configure_device(struct evdev_device *device)
504 (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
505 weston_seat_init_pointer(device->seat);
506 weston_log("input device %s, %s is a pointer caps =%s%s%s\n",
507 device->devname, device->devnode,
508 device->caps & EVDEV_MOTION_ABS ? " absolute-motion" : "",
509 device->caps & EVDEV_MOTION_REL ? " relative-motion": "",
510 device->caps & EVDEV_BUTTON ? " button" : "");
512 if ((device->caps & EVDEV_KEYBOARD)) {
513 if (weston_seat_init_keyboard(device->seat, NULL) < 0)
515 weston_log("input device %s, %s is a keyboard\n",
516 device->devname, device->devnode);
518 if ((device->caps & EVDEV_TOUCH)) {
519 weston_seat_init_touch(device->seat);
520 weston_log("input device %s, %s is a touch device\n",
521 device->devname, device->devnode);
527 struct evdev_device *
528 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
530 struct evdev_device *device;
531 struct weston_compositor *ec;
532 char devname[256] = "unknown";
534 device = malloc(sizeof *device);
537 memset(device, 0, sizeof *device);
539 ec = seat->compositor;
541 container_of(ec->output_list.next, struct weston_output, link);
545 device->mtdev = NULL;
546 device->devnode = strdup(path);
547 device->mt.slot = -1;
550 device->dispatch = NULL;
551 device->fd = device_fd;
553 ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
554 device->devname = strdup(devname);
556 if (!evdev_handle_device(device)) {
557 free(device->devnode);
558 free(device->devname);
560 return EVDEV_UNHANDLED_DEVICE;
563 if (evdev_configure_device(device) == -1)
566 /* If the dispatch was not set up use the fallback. */
567 if (device->dispatch == NULL)
568 device->dispatch = fallback_dispatch_create();
569 if (device->dispatch == NULL)
574 device->mtdev = mtdev_new_open(device->fd);
576 weston_log("mtdev failed to open for %s\n", path);
579 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
581 evdev_device_data, device);
582 if (device->source == NULL)
588 device->dispatch->interface->destroy(device->dispatch);
590 free(device->devname);
591 free(device->devnode);
597 evdev_device_destroy(struct evdev_device *device)
599 struct evdev_dispatch *dispatch;
601 dispatch = device->dispatch;
603 dispatch->interface->destroy(dispatch);
605 wl_event_source_remove(device->source);
606 wl_list_remove(&device->link);
608 mtdev_close_delete(device->mtdev);
610 free(device->devname);
611 free(device->devnode);
616 evdev_notify_keyboard_focus(struct weston_seat *seat,
617 struct wl_list *evdev_devices)
619 struct evdev_device *device;
620 struct wl_array keys;
622 char evdev_keys[(KEY_CNT + 7) / 8];
623 char all_keys[(KEY_CNT + 7) / 8];
630 memset(all_keys, 0, sizeof all_keys);
631 wl_list_for_each(device, evdev_devices, link) {
632 memset(evdev_keys, 0, sizeof evdev_keys);
633 ret = ioctl(device->fd,
634 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
636 weston_log("failed to get keys for device %s\n",
640 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
641 all_keys[i] |= evdev_keys[i];
644 wl_array_init(&keys);
645 for (i = 0; i < KEY_CNT; i++) {
646 set = all_keys[i >> 3] & (1 << (i & 7));
648 k = wl_array_add(&keys, sizeof *k);
653 notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
655 wl_array_release(&keys);