src/evdev.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   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.
  13  *
  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.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <linux/input.h>
  26 #include <unistd.h>
  27 #include <fcntl.h>
  28 #include <mtdev.h>
  29
  30 #include "compositor.h"
  31 #include "evdev.h"
  32
  33 void
  34 evdev_led_update(struct evdev_device *device, enum weston_led leds)
  35 {
  36         static const struct {
  37                 enum weston_led weston;
  38                 int evdev;
  39         } map[] = {
  40                 { LED_NUM_LOCK, LED_NUML },
  41                 { LED_CAPS_LOCK, LED_CAPSL },
  42                 { LED_SCROLL_LOCK, LED_SCROLLL },
  43         };
  44         struct input_event ev[ARRAY_LENGTH(map)];
  45         unsigned int i;
  46
  47         if (!device->caps & EVDEV_KEYBOARD)
  48                 return;
  49
  50         memset(ev, 0, sizeof(ev));
  51         for (i = 0; i < ARRAY_LENGTH(map); i++) {
  52                 ev[i].type = EV_LED;
  53                 ev[i].code = map[i].evdev;
  54                 ev[i].value = !!(leds & map[i].weston);
  55         }
  56
  57         i = write(device->fd, ev, sizeof ev);
  58         (void)i; /* no, we really don't care about the return value */
  59 }
  60
  61 static inline void
  62 evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
  63 {
  64         if (e->value == 2)
  65                 return;
  66
  67         switch (e->code) {
  68         case BTN_LEFT:
  69         case BTN_RIGHT:
  70         case BTN_MIDDLE:
  71         case BTN_SIDE:
  72         case BTN_EXTRA:
  73         case BTN_FORWARD:
  74         case BTN_BACK:
  75         case BTN_TASK:
  76                 notify_button(device->seat,
  77                               time, e->code,
  78                               e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
  79                                          WL_POINTER_BUTTON_STATE_RELEASED);
  80                 break;
  81
  82         default:
  83                 notify_key(device->seat,
  84                            time, e->code,
  85                            e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
  86                                       WL_KEYBOARD_KEY_STATE_RELEASED,
  87                            STATE_UPDATE_AUTOMATIC);
  88                 break;
  89         }
  90 }
  91
  92 static void
  93 evdev_process_touch(struct evdev_device *device, struct input_event *e)
  94 {
  95         const int screen_width = device->output->current->width;
  96         const int screen_height = device->output->current->height;
  97
  98         switch (e->code) {
  99         case ABS_MT_SLOT:
 100                 device->mt.slot = e->value;
 101                 break;
 102         case ABS_MT_TRACKING_ID:
 103                 if (e->value >= 0)
 104                         device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
 105                 else
 106                         device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
 107                 break;
 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) +
 112                         device->output->x;
 113                 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
 114                 break;
 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) +
 119                         device->output->y;
 120                 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
 121                 break;
 122         }
 123 }
 124
 125 static inline void
 126 evdev_process_absolute_motion(struct evdev_device *device,
 127                               struct input_event *e)
 128 {
 129         const int screen_width = device->output->current->width;
 130         const int screen_height = device->output->current->height;
 131
 132         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 133                 switch (e->code) {
 134                 case ABS_X:
 135                         if (device->quirks & EVDEV_QUIRK_FLIP_X)
 136                                 device->abs.y =
 137                                         (device->abs.max_y - e->value) * screen_height /
 138                                         (device->abs.max_y - device->abs.min_y) +
 139                                         device->output->y;
 140                         else
 141                                 device->abs.y =
 142                                         (e->value - device->abs.min_y) * screen_height /
 143                                         (device->abs.max_y - device->abs.min_y) +
 144                                         device->output->y;
 145
 146                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 147                         break;
 148                 case ABS_Y:
 149                         if (device->quirks & EVDEV_QUIRK_FLIP_Y)
 150                                 device->abs.x =
 151                                         (device->abs.max_x - e->value) * screen_width /
 152                                         (device->abs.max_x - device->abs.min_x) +
 153                                         device->output->x;
 154                         else
 155                                 device->abs.x =
 156                                         (e->value - device->abs.min_x) * screen_width /
 157                                         (device->abs.max_x - device->abs.min_x) +
 158                                         device->output->x;
 159                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 160                         break;
 161                 }
 162
 163         } else {
 164                 switch (e->code) {
 165                 case ABS_X:
 166                         if (device->quirks & EVDEV_QUIRK_FLIP_X)
 167                                 device->abs.x =
 168                                         (device->abs.max_x - e->value) * screen_width /
 169                                         (device->abs.max_x - device->abs.min_x) +
 170                                         device->output->x;
 171                         else
 172                                 device->abs.x =
 173                                         (e->value - device->abs.min_x) * screen_width /
 174                                         (device->abs.max_x - device->abs.min_x) +
 175                                         device->output->x;
 176                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 177                         break;
 178                 case ABS_Y:
 179                         if (device->quirks & EVDEV_QUIRK_FLIP_Y)
 180                                 device->abs.y =
 181                                         (device->abs.max_y - e->value) * screen_height /
 182                                         (device->abs.max_y - device->abs.min_y) +
 183                                         device->output->y;
 184                         else
 185                                 device->abs.y =
 186                                         (e->value - device->abs.min_y) * screen_height /
 187                                         (device->abs.max_y - device->abs.min_y) +
 188                                         device->output->y;
 189
 190                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 191                         break;
 192                 }
 193         }
 194 }
 195
 196 static inline void
 197 evdev_process_relative(struct evdev_device *device,
 198                        struct input_event *e, uint32_t time)
 199 {
 200         switch (e->code) {
 201         case REL_X:
 202                 device->rel.dx += wl_fixed_from_int(e->value);
 203                 device->pending_events |= EVDEV_RELATIVE_MOTION;
 204                 break;
 205         case REL_Y:
 206                 device->rel.dy += wl_fixed_from_int(e->value);
 207                 device->pending_events |= EVDEV_RELATIVE_MOTION;
 208                 break;
 209         case REL_WHEEL:
 210                 notify_axis(device->seat,
 211                               time,
 212                               WL_POINTER_AXIS_VERTICAL_SCROLL,
 213                               wl_fixed_from_int(e->value));
 214                 break;
 215         case REL_HWHEEL:
 216                 notify_axis(device->seat,
 217                               time,
 218                               WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 219                               wl_fixed_from_int(e->value));
 220                 break;
 221         }
 222 }
 223
 224 static inline void
 225 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
 226 {
 227         if (device->is_mt) {
 228                 evdev_process_touch(device, e);
 229         } else {
 230                 evdev_process_absolute_motion(device, e);
 231         }
 232 }
 233
 234 static int
 235 is_motion_event(struct input_event *e)
 236 {
 237         switch (e->type) {
 238         case EV_REL:
 239                 switch (e->code) {
 240                 case REL_X:
 241                 case REL_Y:
 242                         return 1;
 243                 }
 244         case EV_ABS:
 245                 switch (e->code) {
 246                 case ABS_X:
 247                 case ABS_Y:
 248                 case ABS_MT_POSITION_X:
 249                 case ABS_MT_POSITION_Y:
 250                         return 1;
 251                 }
 252         }
 253
 254         return 0;
 255 }
 256
 257 static void
 258 evdev_flush_motion(struct evdev_device *device, uint32_t time)
 259 {
 260         struct weston_seat *master = device->seat;
 261
 262         if (!device->pending_events)
 263                 return;
 264
 265         if (device->pending_events & EVDEV_RELATIVE_MOTION) {
 266                 notify_motion(master, time,
 267                               master->seat.pointer->x + device->rel.dx,
 268                               master->seat.pointer->y + device->rel.dy);
 269                 device->pending_events &= ~EVDEV_RELATIVE_MOTION;
 270                 device->rel.dx = 0;
 271                 device->rel.dy = 0;
 272         }
 273         if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
 274                 notify_touch(master, time,
 275                              device->mt.slot,
 276                              wl_fixed_from_int(device->mt.x[device->mt.slot]),
 277                              wl_fixed_from_int(device->mt.y[device->mt.slot]),
 278                              WL_TOUCH_DOWN);
 279                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
 280                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
 281         }
 282         if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
 283                 notify_touch(master, time,
 284                              device->mt.slot,
 285                              wl_fixed_from_int(device->mt.x[device->mt.slot]),
 286                              wl_fixed_from_int(device->mt.y[device->mt.slot]),
 287                              WL_TOUCH_MOTION);
 288                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
 289                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
 290         }
 291         if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
 292                 notify_touch(master, time, device->mt.slot, 0, 0,
 293                              WL_TOUCH_UP);
 294                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
 295         }
 296         if (device->pending_events & EVDEV_ABSOLUTE_MOTION) {
 297                 notify_motion(master, time,
 298                               wl_fixed_from_int(device->abs.x),
 299                               wl_fixed_from_int(device->abs.y));
 300                 device->pending_events &= ~EVDEV_ABSOLUTE_MOTION;
 301         }
 302 }
 303
 304 static void
 305 fallback_process(struct evdev_dispatch *dispatch,
 306                  struct evdev_device *device,
 307                  struct input_event *event,
 308                  uint32_t time)
 309 {
 310         switch (event->type) {
 311         case EV_REL:
 312                 evdev_process_relative(device, event, time);
 313                 break;
 314         case EV_ABS:
 315                 evdev_process_absolute(device, event);
 316                 break;
 317         case EV_KEY:
 318                 evdev_process_key(device, event, time);
 319                 break;
 320         }
 321 }
 322
 323 static void
 324 fallback_destroy(struct evdev_dispatch *dispatch)
 325 {
 326         free(dispatch);
 327 }
 328
 329 struct evdev_dispatch_interface fallback_interface = {
 330         fallback_process,
 331         fallback_destroy
 332 };
 333
 334 static struct evdev_dispatch *
 335 fallback_dispatch_create(void)
 336 {
 337         struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
 338         if (dispatch == NULL)
 339                 return NULL;
 340
 341         dispatch->interface = &fallback_interface;
 342
 343         return dispatch;
 344 }
 345
 346 static void
 347 evdev_process_events(struct evdev_device *device,
 348                      struct input_event *ev, int count)
 349 {
 350         struct evdev_dispatch *dispatch = device->dispatch;
 351         struct input_event *e, *end;
 352         uint32_t time = 0;
 353
 354         device->pending_events = 0;
 355
 356         e = ev;
 357         end = e + count;
 358         for (e = ev; e < end; e++) {
 359                 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
 360
 361                 /* we try to minimize the amount of notifications to be
 362                  * forwarded to the compositor, so we accumulate motion
 363                  * events and send as a bunch */
 364                 if (!is_motion_event(e))
 365                         evdev_flush_motion(device, time);
 366
 367                 dispatch->interface->process(dispatch, device, e, time);
 368         }
 369
 370         evdev_flush_motion(device, time);
 371 }
 372
 373 static int
 374 evdev_device_data(int fd, uint32_t mask, void *data)
 375 {
 376         struct weston_compositor *ec;
 377         struct evdev_device *device = data;
 378         struct input_event ev[32];
 379         int len;
 380
 381         ec = device->seat->compositor;
 382         if (!ec->focus)
 383                 return 1;
 384
 385         /* If the compositor is repainting, this function is called only once
 386          * per frame and we have to process all the events available on the
 387          * fd, otherwise there will be input lag. */
 388         do {
 389                 if (device->mtdev)
 390                         len = mtdev_get(device->mtdev, fd, ev,
 391                                         ARRAY_LENGTH(ev)) *
 392                                 sizeof (struct input_event);
 393                 else
 394                         len = read(fd, &ev, sizeof ev);
 395
 396                 if (len < 0 || len % sizeof ev[0] != 0) {
 397                         /* FIXME: call evdev_device_destroy when errno is ENODEV. */
 398                         return 1;
 399                 }
 400
 401                 evdev_process_events(device, ev, len / sizeof ev[0]);
 402
 403         } while (len > 0);
 404
 405         return 1;
 406 }
 407
 408 static int
 409 evdev_configure_device(struct evdev_device *device)
 410 {
 411         struct input_absinfo absinfo;
 412         unsigned long ev_bits[NBITS(EV_MAX)];
 413         unsigned long abs_bits[NBITS(ABS_MAX)];
 414         unsigned long rel_bits[NBITS(REL_MAX)];
 415         unsigned long key_bits[NBITS(KEY_MAX)];
 416         int has_key, has_abs;
 417         unsigned int i;
 418
 419         has_key = 0;
 420         has_abs = 0;
 421         device->caps = 0;
 422
 423         ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
 424         if (TEST_BIT(ev_bits, EV_ABS)) {
 425                 has_abs = 1;
 426
 427                 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
 428                       abs_bits);
 429                 if (TEST_BIT(abs_bits, ABS_X)) {
 430                         ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
 431                         device->abs.min_x = absinfo.minimum;
 432                         device->abs.max_x = absinfo.maximum;
 433                         device->caps |= EVDEV_MOTION_ABS;
 434                 }
 435                 if (TEST_BIT(abs_bits, ABS_Y)) {
 436                         ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
 437                         device->abs.min_y = absinfo.minimum;
 438                         device->abs.max_y = absinfo.maximum;
 439                         device->caps |= EVDEV_MOTION_ABS;
 440                 }
 441                 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
 442                         ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
 443                               &absinfo);
 444                         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 445                                 device->abs.min_y = absinfo.minimum;
 446                                 device->abs.max_y = absinfo.maximum;
 447                         } else {
 448                                 device->abs.min_x = absinfo.minimum;
 449                                 device->abs.max_x = absinfo.maximum;
 450                         }
 451                         ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
 452                               &absinfo);
 453                         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 454                                 device->abs.min_x = absinfo.minimum;
 455                                 device->abs.max_x = absinfo.maximum;
 456                         } else {
 457                                 device->abs.min_y = absinfo.minimum;
 458                                 device->abs.max_y = absinfo.maximum;
 459                         }
 460                         device->is_mt = 1;
 461                         device->mt.slot = 0;
 462                         device->caps |= EVDEV_TOUCH;
 463                 }
 464         }
 465         if (TEST_BIT(ev_bits, EV_REL)) {
 466                 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
 467                       rel_bits);
 468                 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
 469                         device->caps |= EVDEV_MOTION_REL;
 470         }
 471         if (TEST_BIT(ev_bits, EV_KEY)) {
 472                 has_key = 1;
 473                 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
 474                       key_bits);
 475                 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
 476                     !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
 477                     has_abs)
 478                         device->dispatch = evdev_touchpad_create(device);
 479                 for (i = KEY_ESC; i < KEY_MAX; i++) {
 480                         if (i >= BTN_MISC && i < KEY_OK)
 481                                 continue;
 482                         if (TEST_BIT(key_bits, i)) {
 483                                 device->caps |= EVDEV_KEYBOARD;
 484                                 break;
 485                         }
 486                 }
 487                 for (i = BTN_MISC; i < KEY_OK; i++) {
 488                         if (TEST_BIT(key_bits, i)) {
 489                                 device->caps |= EVDEV_BUTTON;
 490                                 break;
 491                         }
 492                 }
 493         }
 494         if (TEST_BIT(ev_bits, EV_LED)) {
 495                 device->caps |= EVDEV_KEYBOARD;
 496         }
 497
 498         /* This rule tries to catch accelerometer devices and opt out. We may
 499          * want to adjust the protocol later adding a proper event for dealing
 500          * with accelerometers and implement here accordingly */
 501         if (has_abs && !has_key && !device->is_mt) {
 502                 weston_log("input device %s, %s "
 503                            "ignored: unsupported device type\n",
 504                            device->devname, device->devnode);
 505                 return -1;
 506         }
 507
 508         if ((device->caps &
 509              (EVDEV_MOTION_ABS | EVDEV_MOTION_REL | EVDEV_BUTTON))) {
 510                 weston_seat_init_pointer(device->seat);
 511                 weston_log("input device %s, %s is a pointer\n",
 512                            device->devname, device->devnode);
 513         }
 514         if ((device->caps & EVDEV_KEYBOARD)) {
 515                 weston_seat_init_keyboard(device->seat, NULL);
 516                 weston_log("input device %s, %s is a keyboard\n",
 517                            device->devname, device->devnode);
 518         }
 519         if ((device->caps & EVDEV_TOUCH)) {
 520                 weston_seat_init_touch(device->seat);
 521                 weston_log("input device %s, %s is a touch device\n",
 522                            device->devname, device->devnode);
 523         }
 524
 525         return 0;
 526 }
 527
 528 struct evdev_device *
 529 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
 530 {
 531         struct evdev_device *device;
 532         struct weston_compositor *ec;
 533         char devname[256] = "unknown";
 534
 535         device = malloc(sizeof *device);
 536         if (device == NULL)
 537                 return NULL;
 538         memset(device, 0, sizeof *device);
 539
 540         ec = seat->compositor;
 541         device->output =
 542                 container_of(ec->output_list.next, struct weston_output, link);
 543
 544         device->seat = seat;
 545         device->is_mt = 0;
 546         device->mtdev = NULL;
 547         device->devnode = strdup(path);
 548         device->mt.slot = -1;
 549         device->rel.dx = 0;
 550         device->rel.dy = 0;
 551         device->dispatch = NULL;
 552         device->fd = device_fd;
 553
 554         ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
 555         device->devname = strdup(devname);
 556
 557         if (evdev_configure_device(device) == -1)
 558                 goto err1;
 559
 560         /* If the dispatch was not set up use the fallback. */
 561         if (device->dispatch == NULL)
 562                 device->dispatch = fallback_dispatch_create();
 563         if (device->dispatch == NULL)
 564                 goto err1;
 565
 566
 567         if (device->is_mt) {
 568                 device->mtdev = mtdev_new_open(device->fd);
 569                 if (!device->mtdev)
 570                         weston_log("mtdev failed to open for %s\n", path);
 571         }
 572
 573         device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
 574                                               WL_EVENT_READABLE,
 575                                               evdev_device_data, device);
 576         if (device->source == NULL)
 577                 goto err2;
 578
 579         return device;
 580
 581 err2:
 582         device->dispatch->interface->destroy(device->dispatch);
 583 err1:
 584         free(device->devname);
 585         free(device->devnode);
 586         free(device);
 587         return NULL;
 588 }
 589
 590 void
 591 evdev_device_destroy(struct evdev_device *device)
 592 {
 593         struct evdev_dispatch *dispatch;
 594
 595         dispatch = device->dispatch;
 596         if (dispatch)
 597                 dispatch->interface->destroy(dispatch);
 598
 599         wl_event_source_remove(device->source);
 600         wl_list_remove(&device->link);
 601         if (device->mtdev)
 602                 mtdev_close_delete(device->mtdev);
 603         close(device->fd);
 604         free(device->devname);
 605         free(device->devnode);
 606         free(device);
 607 }
 608
 609 void
 610 evdev_notify_keyboard_focus(struct weston_seat *seat,
 611                             struct wl_list *evdev_devices)
 612 {
 613         struct evdev_device *device;
 614         struct wl_array keys;
 615         unsigned int i, set;
 616         char evdev_keys[(KEY_CNT + 7) / 8];
 617         char all_keys[(KEY_CNT + 7) / 8];
 618         uint32_t *k;
 619         int ret;
 620
 621         if (!seat->seat.keyboard)
 622                 return;
 623
 624         memset(all_keys, 0, sizeof all_keys);
 625         wl_list_for_each(device, evdev_devices, link) {
 626                 memset(evdev_keys, 0, sizeof evdev_keys);
 627                 ret = ioctl(device->fd,
 628                             EVIOCGKEY(sizeof evdev_keys), evdev_keys);
 629                 if (ret < 0) {
 630                         weston_log("failed to get keys for device %s\n",
 631                                 device->devnode);
 632                         continue;
 633                 }
 634                 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
 635                         all_keys[i] |= evdev_keys[i];
 636         }
 637
 638         wl_array_init(&keys);
 639         for (i = 0; i < KEY_CNT; i++) {
 640                 set = all_keys[i >> 3] & (1 << (i & 7));
 641                 if (set) {
 642                         k = wl_array_add(&keys, sizeof *k);
 643                         *k = i;
 644                 }
 645         }
 646
 647         notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
 648
 649         wl_array_release(&keys);
 650 }