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)
68 /* ignore kernel key repeat */
81 notify_button(device->seat,
83 e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
84 WL_POINTER_BUTTON_STATE_RELEASED);
88 if (e->value == 0 && !device->is_mt)
89 notify_touch(device->seat, time, device->mt.slot, 0, 0,
93 notify_key(device->seat,
95 e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
96 WL_KEYBOARD_KEY_STATE_RELEASED,
97 STATE_UPDATE_AUTOMATIC);
103 evdev_process_touch(struct evdev_device *device, struct input_event *e)
105 const int screen_width = device->output->current->width;
106 const int screen_height = device->output->current->height;
110 device->mt.slot = e->value;
112 case ABS_MT_TRACKING_ID:
114 device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
116 device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
118 case ABS_MT_POSITION_X:
119 device->mt.x[device->mt.slot] =
120 (e->value - device->abs.min_x) * screen_width /
121 (device->abs.max_x - device->abs.min_x);
122 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
124 case ABS_MT_POSITION_Y:
125 device->mt.y[device->mt.slot] =
126 (e->value - device->abs.min_y) * screen_height /
127 (device->abs.max_y - device->abs.min_y);
128 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
134 evdev_process_absolute_motion(struct evdev_device *device,
135 struct input_event *e)
137 const int screen_width = device->output->current->width;
138 const int screen_height = device->output->current->height;
143 (e->value - device->abs.min_x) * screen_width /
144 (device->abs.max_x - device->abs.min_x);
145 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
149 (e->value - device->abs.min_y) * screen_height /
150 (device->abs.max_y - device->abs.min_y);
151 device->pending_events |= EVDEV_ABSOLUTE_MOTION;
157 evdev_process_relative(struct evdev_device *device,
158 struct input_event *e, uint32_t time)
162 device->rel.dx += wl_fixed_from_int(e->value);
163 device->pending_events |= EVDEV_RELATIVE_MOTION;
166 device->rel.dy += wl_fixed_from_int(e->value);
167 device->pending_events |= EVDEV_RELATIVE_MOTION;
175 notify_axis(device->seat,
177 WL_POINTER_AXIS_VERTICAL_SCROLL,
178 -1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
190 notify_axis(device->seat,
192 WL_POINTER_AXIS_HORIZONTAL_SCROLL,
193 e->value * DEFAULT_AXIS_STEP_DISTANCE);
203 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
206 evdev_process_touch(device, e);
208 evdev_process_absolute_motion(device, e);
213 is_motion_event(struct input_event *e)
227 case ABS_MT_POSITION_X:
228 case ABS_MT_POSITION_Y:
237 transform_absolute(struct evdev_device *device)
241 if (!device->abs.apply_calibration)
244 x = device->abs.x * device->abs.calibration[0] +
245 device->abs.y * device->abs.calibration[1] +
246 device->abs.calibration[2];
248 y = device->abs.x * device->abs.calibration[3] +
249 device->abs.y * device->abs.calibration[4] +
250 device->abs.calibration[5];
257 evdev_flush_motion(struct evdev_device *device, uint32_t time)
259 struct weston_seat *master = device->seat;
263 if (!(device->pending_events & EVDEV_SYN))
266 slot = device->mt.slot;
267 device->pending_events &= ~EVDEV_SYN;
268 if (device->pending_events & EVDEV_RELATIVE_MOTION) {
269 notify_motion(master, time, device->rel.dx, device->rel.dy);
270 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
274 if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
275 weston_output_transform_coordinate(device->output,
279 notify_touch(master, time,
280 device->mt.slot, x, y, WL_TOUCH_DOWN);
281 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
282 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
284 if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
285 weston_output_transform_coordinate(device->output,
289 notify_touch(master, time,
290 device->mt.slot, x, y, WL_TOUCH_MOTION);
291 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
292 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
294 if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
295 notify_touch(master, time, device->mt.slot, 0, 0,
297 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
299 if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
300 transform_absolute(device);
301 weston_output_transform_coordinate(device->output,
303 device->abs.y, &x, &y);
305 if (device->caps & EVDEV_TOUCH) {
306 if (master->num_tp == 0)
307 notify_touch(master, time, 0,
308 x, y, WL_TOUCH_DOWN);
310 notify_touch(master, time, 0,
311 x, y, WL_TOUCH_MOTION);
313 notify_motion_absolute(master, time, x, y);
314 device->pending_events &= ~EVDEV_ABSOLUTE_MOTION;
319 fallback_process(struct evdev_dispatch *dispatch,
320 struct evdev_device *device,
321 struct input_event *event,
324 switch (event->type) {
326 evdev_process_relative(device, event, time);
329 evdev_process_absolute(device, event);
332 evdev_process_key(device, event, time);
335 device->pending_events |= EVDEV_SYN;
341 fallback_destroy(struct evdev_dispatch *dispatch)
346 struct evdev_dispatch_interface fallback_interface = {
351 static struct evdev_dispatch *
352 fallback_dispatch_create(void)
354 struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
355 if (dispatch == NULL)
358 dispatch->interface = &fallback_interface;
364 evdev_process_events(struct evdev_device *device,
365 struct input_event *ev, int count)
367 struct evdev_dispatch *dispatch = device->dispatch;
368 struct input_event *e, *end;
371 device->pending_events = 0;
375 for (e = ev; e < end; e++) {
376 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
378 /* we try to minimize the amount of notifications to be
379 * forwarded to the compositor, so we accumulate motion
380 * events and send as a bunch */
381 if (!is_motion_event(e))
382 evdev_flush_motion(device, time);
384 dispatch->interface->process(dispatch, device, e, time);
387 evdev_flush_motion(device, time);
391 evdev_device_data(int fd, uint32_t mask, void *data)
393 struct weston_compositor *ec;
394 struct evdev_device *device = data;
395 struct input_event ev[32];
398 ec = device->seat->compositor;
402 /* If the compositor is repainting, this function is called only once
403 * per frame and we have to process all the events available on the
404 * fd, otherwise there will be input lag. */
407 len = mtdev_get(device->mtdev, fd, ev,
409 sizeof (struct input_event);
411 len = read(fd, &ev, sizeof ev);
413 if (len < 0 || len % sizeof ev[0] != 0) {
414 /* FIXME: call evdev_device_destroy when errno is ENODEV. */
418 evdev_process_events(device, ev, len / sizeof ev[0]);
426 evdev_handle_device(struct evdev_device *device)
428 struct input_absinfo absinfo;
429 unsigned long ev_bits[NBITS(EV_MAX)];
430 unsigned long abs_bits[NBITS(ABS_MAX)];
431 unsigned long rel_bits[NBITS(REL_MAX)];
432 unsigned long key_bits[NBITS(KEY_MAX)];
433 int has_key, has_abs;
440 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
441 if (TEST_BIT(ev_bits, EV_ABS)) {
444 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
446 if (TEST_BIT(abs_bits, ABS_X)) {
447 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
448 device->abs.min_x = absinfo.minimum;
449 device->abs.max_x = absinfo.maximum;
450 device->caps |= EVDEV_MOTION_ABS;
452 if (TEST_BIT(abs_bits, ABS_Y)) {
453 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
454 device->abs.min_y = absinfo.minimum;
455 device->abs.max_y = absinfo.maximum;
456 device->caps |= EVDEV_MOTION_ABS;
458 /* We only handle the slotted Protocol B in weston.
459 Devices with ABS_MT_POSITION_* but not ABS_MT_SLOT
460 require mtdev for conversion. */
461 if (TEST_BIT(abs_bits, ABS_MT_POSITION_X) &&
462 TEST_BIT(abs_bits, ABS_MT_POSITION_Y)) {
463 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
465 device->abs.min_x = absinfo.minimum;
466 device->abs.max_x = absinfo.maximum;
467 ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
469 device->abs.min_y = absinfo.minimum;
470 device->abs.max_y = absinfo.maximum;
472 device->caps |= EVDEV_TOUCH;
474 if (!TEST_BIT(abs_bits, ABS_MT_SLOT)) {
475 device->mtdev = mtdev_new_open(device->fd);
476 if (!device->mtdev) {
477 weston_log("mtdev required but failed to open for %s\n",
481 device->mt.slot = device->mtdev->caps.slot.value;
483 ioctl(device->fd, EVIOCGABS(ABS_MT_SLOT),
485 device->mt.slot = absinfo.value;
489 if (TEST_BIT(ev_bits, EV_REL)) {
490 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
492 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
493 device->caps |= EVDEV_MOTION_REL;
495 if (TEST_BIT(ev_bits, EV_KEY)) {
497 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
499 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
500 !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
502 device->dispatch = evdev_touchpad_create(device);
503 for (i = KEY_ESC; i < KEY_MAX; i++) {
504 if (i >= BTN_MISC && i < KEY_OK)
506 if (TEST_BIT(key_bits, i)) {
507 device->caps |= EVDEV_KEYBOARD;
511 for (i = BTN_MISC; i < KEY_OK; i++) {
512 if (TEST_BIT(key_bits, i)) {
513 device->caps |= EVDEV_BUTTON;
517 if (TEST_BIT(key_bits, BTN_TOUCH)) {
518 device->caps |= EVDEV_TOUCH;
522 if (TEST_BIT(ev_bits, EV_LED)) {
523 device->caps |= EVDEV_KEYBOARD;
526 /* This rule tries to catch accelerometer devices and opt out. We may
527 * want to adjust the protocol later adding a proper event for dealing
528 * with accelerometers and implement here accordingly */
529 if (has_abs && !has_key && !device->is_mt) {
530 weston_log("input device %s, %s "
531 "ignored: unsupported device type\n",
532 device->devname, device->devnode);
540 evdev_configure_device(struct evdev_device *device)
543 (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
544 weston_seat_init_pointer(device->seat);
545 weston_log("input device %s, %s is a pointer caps =%s%s%s\n",
546 device->devname, device->devnode,
547 device->caps & EVDEV_MOTION_ABS ? " absolute-motion" : "",
548 device->caps & EVDEV_MOTION_REL ? " relative-motion": "",
549 device->caps & EVDEV_BUTTON ? " button" : "");
551 if ((device->caps & EVDEV_KEYBOARD)) {
552 if (weston_seat_init_keyboard(device->seat, NULL) < 0)
554 weston_log("input device %s, %s is a keyboard\n",
555 device->devname, device->devnode);
557 if ((device->caps & EVDEV_TOUCH)) {
558 weston_seat_init_touch(device->seat);
559 weston_log("input device %s, %s is a touch device\n",
560 device->devname, device->devnode);
566 struct evdev_device *
567 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
569 struct evdev_device *device;
570 struct weston_compositor *ec;
571 char devname[256] = "unknown";
573 device = zalloc(sizeof *device);
577 ec = seat->compositor;
579 container_of(ec->output_list.next, struct weston_output, link);
583 device->mtdev = NULL;
584 device->devnode = strdup(path);
585 device->mt.slot = -1;
588 device->dispatch = NULL;
589 device->fd = device_fd;
591 ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
592 devname[sizeof(devname) - 1] = '\0';
593 device->devname = strdup(devname);
595 if (!evdev_handle_device(device)) {
597 mtdev_close_delete(device->mtdev);
598 free(device->devnode);
599 free(device->devname);
601 return EVDEV_UNHANDLED_DEVICE;
604 if (evdev_configure_device(device) == -1)
607 /* If the dispatch was not set up use the fallback. */
608 if (device->dispatch == NULL)
609 device->dispatch = fallback_dispatch_create();
610 if (device->dispatch == NULL)
613 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
615 evdev_device_data, device);
616 if (device->source == NULL)
622 device->dispatch->interface->destroy(device->dispatch);
625 mtdev_close_delete(device->mtdev);
626 free(device->devname);
627 free(device->devnode);
633 evdev_device_destroy(struct evdev_device *device)
635 struct evdev_dispatch *dispatch;
637 dispatch = device->dispatch;
639 dispatch->interface->destroy(dispatch);
641 wl_event_source_remove(device->source);
642 wl_list_remove(&device->link);
644 mtdev_close_delete(device->mtdev);
646 free(device->devname);
647 free(device->devnode);
652 evdev_notify_keyboard_focus(struct weston_seat *seat,
653 struct wl_list *evdev_devices)
655 struct evdev_device *device;
656 struct wl_array keys;
658 char evdev_keys[(KEY_CNT + 7) / 8];
659 char all_keys[(KEY_CNT + 7) / 8];
666 memset(all_keys, 0, sizeof all_keys);
667 wl_list_for_each(device, evdev_devices, link) {
668 memset(evdev_keys, 0, sizeof evdev_keys);
669 ret = ioctl(device->fd,
670 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
672 weston_log("failed to get keys for device %s\n",
676 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
677 all_keys[i] |= evdev_keys[i];
680 wl_array_init(&keys);
681 for (i = 0; i < KEY_CNT; i++) {
682 set = all_keys[i >> 3] & (1 << (i & 7));
684 k = wl_array_add(&keys, sizeof *k);
689 notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
691 wl_array_release(&keys);