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 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
  34
  35 void
  36 evdev_led_update(struct evdev_device *device, enum weston_led leds)
  37 {
  38         static const struct {
  39                 enum weston_led weston;
  40                 int evdev;
  41         } map[] = {
  42                 { LED_NUM_LOCK, LED_NUML },
  43                 { LED_CAPS_LOCK, LED_CAPSL },
  44                 { LED_SCROLL_LOCK, LED_SCROLLL },
  45         };
  46         struct input_event ev[ARRAY_LENGTH(map)];
  47         unsigned int i;
  48
  49         if (!device->caps & EVDEV_KEYBOARD)
  50                 return;
  51
  52         memset(ev, 0, sizeof(ev));
  53         for (i = 0; i < ARRAY_LENGTH(map); i++) {
  54                 ev[i].type = EV_LED;
  55                 ev[i].code = map[i].evdev;
  56                 ev[i].value = !!(leds & map[i].weston);
  57         }
  58
  59         i = write(device->fd, ev, sizeof ev);
  60         (void)i; /* no, we really don't care about the return value */
  61 }
  62
  63 static inline void
  64 evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
  65 {
  66         if (e->value == 2)
  67                 return;
  68
  69         switch (e->code) {
  70         case BTN_LEFT:
  71         case BTN_RIGHT:
  72         case BTN_MIDDLE:
  73         case BTN_SIDE:
  74         case BTN_EXTRA:
  75         case BTN_FORWARD:
  76         case BTN_BACK:
  77         case BTN_TASK:
  78                 notify_button(device->seat,
  79                               time, e->code,
  80                               e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
  81                                          WL_POINTER_BUTTON_STATE_RELEASED);
  82                 break;
  83
  84         default:
  85                 notify_key(device->seat,
  86                            time, e->code,
  87                            e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
  88                                       WL_KEYBOARD_KEY_STATE_RELEASED,
  89                            STATE_UPDATE_AUTOMATIC);
  90                 break;
  91         }
  92 }
  93
  94 static void
  95 evdev_process_touch(struct evdev_device *device, struct input_event *e)
  96 {
  97         const int screen_width = device->output->current->width;
  98         const int screen_height = device->output->current->height;
  99
 100         switch (e->code) {
 101         case ABS_MT_SLOT:
 102                 device->mt.slot = e->value;
 103                 break;
 104         case ABS_MT_TRACKING_ID:
 105                 if (e->value >= 0)
 106                         device->pending_events |= EVDEV_ABSOLUTE_MT_DOWN;
 107                 else
 108                         device->pending_events |= EVDEV_ABSOLUTE_MT_UP;
 109                 break;
 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) +
 114                         device->output->x;
 115                 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
 116                 break;
 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) +
 121                         device->output->y;
 122                 device->pending_events |= EVDEV_ABSOLUTE_MT_MOTION;
 123                 break;
 124         }
 125 }
 126
 127 static inline void
 128 evdev_process_absolute_motion(struct evdev_device *device,
 129                               struct input_event *e)
 130 {
 131         const int screen_width = device->output->current->width;
 132         const int screen_height = device->output->current->height;
 133
 134         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 135                 switch (e->code) {
 136                 case ABS_X:
 137                         device->abs.y =
 138                                 (e->value - device->abs.min_y) * screen_height /
 139                                 (device->abs.max_y - device->abs.min_y) +
 140                                 device->output->y;
 141                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 142                         break;
 143                 case ABS_Y:
 144                         device->abs.x =
 145                                 (e->value - device->abs.min_x) * screen_width /
 146                                 (device->abs.max_x - device->abs.min_x) +
 147                                 device->output->x;
 148                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 149                         break;
 150                 }
 151
 152         } else {
 153                 switch (e->code) {
 154                 case ABS_X:
 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                 case ABS_Y:
 162                         device->abs.y =
 163                                 (e->value - device->abs.min_y) * screen_height /
 164                                 (device->abs.max_y - device->abs.min_y) +
 165                                 device->output->y;
 166                         device->pending_events |= EVDEV_ABSOLUTE_MOTION;
 167                         break;
 168                 }
 169         }
 170 }
 171
 172 static inline void
 173 evdev_process_relative(struct evdev_device *device,
 174                        struct input_event *e, uint32_t time)
 175 {
 176         switch (e->code) {
 177         case REL_X:
 178                 device->rel.dx += wl_fixed_from_int(e->value);
 179                 device->pending_events |= EVDEV_RELATIVE_MOTION;
 180                 break;
 181         case REL_Y:
 182                 device->rel.dy += wl_fixed_from_int(e->value);
 183                 device->pending_events |= EVDEV_RELATIVE_MOTION;
 184                 break;
 185         case REL_WHEEL:
 186                 switch (e->value) {
 187                 case -1:
 188                         /* Scroll down */
 189                 case 1:
 190                         /* Scroll up */
 191                         notify_axis(device->seat,
 192                                     time,
 193                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
 194                                     -1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
 195                         break;
 196                 default:
 197                         break;
 198                 }
 199                 break;
 200         case REL_HWHEEL:
 201                 switch (e->value) {
 202                 case -1:
 203                         /* Scroll left */
 204                 case 1:
 205                         /* Scroll right */
 206                         notify_axis(device->seat,
 207                                     time,
 208                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 209                                     e->value * DEFAULT_AXIS_STEP_DISTANCE);
 210                         break;
 211                 default:
 212                         break;
 213
 214                 }
 215         }
 216 }
 217
 218 static inline void
 219 evdev_process_absolute(struct evdev_device *device, struct input_event *e)
 220 {
 221         if (device->is_mt) {
 222                 evdev_process_touch(device, e);
 223         } else {
 224                 evdev_process_absolute_motion(device, e);
 225         }
 226 }
 227
 228 static int
 229 is_motion_event(struct input_event *e)
 230 {
 231         switch (e->type) {
 232         case EV_REL:
 233                 switch (e->code) {
 234                 case REL_X:
 235                 case REL_Y:
 236                         return 1;
 237                 }
 238                 break;
 239         case EV_ABS:
 240                 switch (e->code) {
 241                 case ABS_X:
 242                 case ABS_Y:
 243                 case ABS_MT_POSITION_X:
 244                 case ABS_MT_POSITION_Y:
 245                         return 1;
 246                 }
 247         }
 248
 249         return 0;
 250 }
 251
 252 static void
 253 evdev_flush_motion(struct evdev_device *device, uint32_t time)
 254 {
 255         struct weston_seat *master = device->seat;
 256
 257         if (!(device->pending_events & EVDEV_SYN))
 258                 return;
 259
 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;
 266                 device->rel.dx = 0;
 267                 device->rel.dy = 0;
 268         }
 269         if (device->pending_events & EVDEV_ABSOLUTE_MT_DOWN) {
 270                 notify_touch(master, time,
 271                              device->mt.slot,
 272                              wl_fixed_from_int(device->mt.x[device->mt.slot]),
 273                              wl_fixed_from_int(device->mt.y[device->mt.slot]),
 274                              WL_TOUCH_DOWN);
 275                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
 276                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
 277         }
 278         if (device->pending_events & EVDEV_ABSOLUTE_MT_MOTION) {
 279                 notify_touch(master, time,
 280                              device->mt.slot,
 281                              wl_fixed_from_int(device->mt.x[device->mt.slot]),
 282                              wl_fixed_from_int(device->mt.y[device->mt.slot]),
 283                              WL_TOUCH_MOTION);
 284                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_DOWN;
 285                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_MOTION;
 286         }
 287         if (device->pending_events & EVDEV_ABSOLUTE_MT_UP) {
 288                 notify_touch(master, time, device->mt.slot, 0, 0,
 289                              WL_TOUCH_UP);
 290                 device->pending_events &= ~EVDEV_ABSOLUTE_MT_UP;
 291         }
 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;
 297         }
 298 }
 299
 300 static void
 301 fallback_process(struct evdev_dispatch *dispatch,
 302                  struct evdev_device *device,
 303                  struct input_event *event,
 304                  uint32_t time)
 305 {
 306         switch (event->type) {
 307         case EV_REL:
 308                 evdev_process_relative(device, event, time);
 309                 break;
 310         case EV_ABS:
 311                 evdev_process_absolute(device, event);
 312                 break;
 313         case EV_KEY:
 314                 evdev_process_key(device, event, time);
 315                 break;
 316         case EV_SYN:
 317                 device->pending_events |= EVDEV_SYN;
 318                 break;
 319         }
 320 }
 321
 322 static void
 323 fallback_destroy(struct evdev_dispatch *dispatch)
 324 {
 325         free(dispatch);
 326 }
 327
 328 struct evdev_dispatch_interface fallback_interface = {
 329         fallback_process,
 330         fallback_destroy
 331 };
 332
 333 static struct evdev_dispatch *
 334 fallback_dispatch_create(void)
 335 {
 336         struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
 337         if (dispatch == NULL)
 338                 return NULL;
 339
 340         dispatch->interface = &fallback_interface;
 341
 342         return dispatch;
 343 }
 344
 345 static void
 346 evdev_process_events(struct evdev_device *device,
 347                      struct input_event *ev, int count)
 348 {
 349         struct evdev_dispatch *dispatch = device->dispatch;
 350         struct input_event *e, *end;
 351         uint32_t time = 0;
 352
 353         device->pending_events = 0;
 354
 355         e = ev;
 356         end = e + count;
 357         for (e = ev; e < end; e++) {
 358                 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
 359
 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);
 365
 366                 dispatch->interface->process(dispatch, device, e, time);
 367         }
 368
 369         evdev_flush_motion(device, time);
 370 }
 371
 372 static int
 373 evdev_device_data(int fd, uint32_t mask, void *data)
 374 {
 375         struct weston_compositor *ec;
 376         struct evdev_device *device = data;
 377         struct input_event ev[32];
 378         int len;
 379
 380         ec = device->seat->compositor;
 381         if (!ec->focus)
 382                 return 1;
 383
 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. */
 387         do {
 388                 if (device->mtdev)
 389                         len = mtdev_get(device->mtdev, fd, ev,
 390                                         ARRAY_LENGTH(ev)) *
 391                                 sizeof (struct input_event);
 392                 else
 393                         len = read(fd, &ev, sizeof ev);
 394
 395                 if (len < 0 || len % sizeof ev[0] != 0) {
 396                         /* FIXME: call evdev_device_destroy when errno is ENODEV. */
 397                         return 1;
 398                 }
 399
 400                 evdev_process_events(device, ev, len / sizeof ev[0]);
 401
 402         } while (len > 0);
 403
 404         return 1;
 405 }
 406
 407 static int
 408 evdev_handle_device(struct evdev_device *device)
 409 {
 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;
 416         unsigned int i;
 417
 418         has_key = 0;
 419         has_abs = 0;
 420         device->caps = 0;
 421
 422         ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
 423         if (TEST_BIT(ev_bits, EV_ABS)) {
 424                 has_abs = 1;
 425
 426                 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
 427                       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;
 433                 }
 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;
 439                 }
 440                 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
 441                         ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
 442                               &absinfo);
 443                         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 444                                 device->abs.min_y = absinfo.minimum;
 445                                 device->abs.max_y = absinfo.maximum;
 446                         } else {
 447                                 device->abs.min_x = absinfo.minimum;
 448                                 device->abs.max_x = absinfo.maximum;
 449                         }
 450                         ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
 451                               &absinfo);
 452                         if (device->quirks & EVDEV_QUIRK_SWAP_AXES) {
 453                                 device->abs.min_x = absinfo.minimum;
 454                                 device->abs.max_x = absinfo.maximum;
 455                         } else {
 456                                 device->abs.min_y = absinfo.minimum;
 457                                 device->abs.max_y = absinfo.maximum;
 458                         }
 459                         device->is_mt = 1;
 460                         device->mt.slot = 0;
 461                         device->caps |= EVDEV_TOUCH;
 462                 }
 463         }
 464         if (TEST_BIT(ev_bits, EV_REL)) {
 465                 ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
 466                       rel_bits);
 467                 if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
 468                         device->caps |= EVDEV_MOTION_REL;
 469         }
 470         if (TEST_BIT(ev_bits, EV_KEY)) {
 471                 has_key = 1;
 472                 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
 473                       key_bits);
 474                 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
 475                     !TEST_BIT(key_bits, BTN_TOOL_PEN) &&
 476                     has_abs)
 477                         device->dispatch = evdev_touchpad_create(device);
 478                 for (i = KEY_ESC; i < KEY_MAX; i++) {
 479                         if (i >= BTN_MISC && i < KEY_OK)
 480                                 continue;
 481                         if (TEST_BIT(key_bits, i)) {
 482                                 device->caps |= EVDEV_KEYBOARD;
 483                                 break;
 484                         }
 485                 }
 486                 for (i = BTN_MISC; i < KEY_OK; i++) {
 487                         if (TEST_BIT(key_bits, i)) {
 488                                 device->caps |= EVDEV_BUTTON;
 489                                 break;
 490                         }
 491                 }
 492         }
 493         if (TEST_BIT(ev_bits, EV_LED)) {
 494                 device->caps |= EVDEV_KEYBOARD;
 495         }
 496
 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);
 504                 return 0;
 505         }
 506
 507         return 1;
 508 }
 509
 510 static int
 511 evdev_configure_device(struct evdev_device *device)
 512 {
 513         if ((device->caps &
 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);
 518         }
 519         if ((device->caps & EVDEV_KEYBOARD)) {
 520                 if (weston_seat_init_keyboard(device->seat, NULL) < 0)
 521                         return -1;
 522                 weston_log("input device %s, %s is a keyboard\n",
 523                            device->devname, device->devnode);
 524         }
 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);
 529         }
 530
 531         return 0;
 532 }
 533
 534 struct evdev_device *
 535 evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
 536 {
 537         struct evdev_device *device;
 538         struct weston_compositor *ec;
 539         char devname[256] = "unknown";
 540
 541         device = malloc(sizeof *device);
 542         if (device == NULL)
 543                 return NULL;
 544         memset(device, 0, sizeof *device);
 545
 546         ec = seat->compositor;
 547         device->output =
 548                 container_of(ec->output_list.next, struct weston_output, link);
 549
 550         device->seat = seat;
 551         device->is_mt = 0;
 552         device->mtdev = NULL;
 553         device->devnode = strdup(path);
 554         device->mt.slot = -1;
 555         device->rel.dx = 0;
 556         device->rel.dy = 0;
 557         device->dispatch = NULL;
 558         device->fd = device_fd;
 559
 560         ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
 561         device->devname = strdup(devname);
 562
 563         if (!evdev_handle_device(device)) {
 564                 free(device->devnode);
 565                 free(device->devname);
 566                 free(device);
 567                 return EVDEV_UNHANDLED_DEVICE;
 568         }
 569
 570         if (evdev_configure_device(device) == -1)
 571                 goto err1;
 572
 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)
 577                 goto err1;
 578
 579
 580         if (device->is_mt) {
 581                 device->mtdev = mtdev_new_open(device->fd);
 582                 if (!device->mtdev)
 583                         weston_log("mtdev failed to open for %s\n", path);
 584         }
 585
 586         device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
 587                                               WL_EVENT_READABLE,
 588                                               evdev_device_data, device);
 589         if (device->source == NULL)
 590                 goto err2;
 591
 592         return device;
 593
 594 err2:
 595         device->dispatch->interface->destroy(device->dispatch);
 596 err1:
 597         free(device->devname);
 598         free(device->devnode);
 599         free(device);
 600         return NULL;
 601 }
 602
 603 void
 604 evdev_device_destroy(struct evdev_device *device)
 605 {
 606         struct evdev_dispatch *dispatch;
 607
 608         dispatch = device->dispatch;
 609         if (dispatch)
 610                 dispatch->interface->destroy(dispatch);
 611
 612         wl_event_source_remove(device->source);
 613         wl_list_remove(&device->link);
 614         if (device->mtdev)
 615                 mtdev_close_delete(device->mtdev);
 616         close(device->fd);
 617         free(device->devname);
 618         free(device->devnode);
 619         free(device);
 620 }
 621
 622 void
 623 evdev_notify_keyboard_focus(struct weston_seat *seat,
 624                             struct wl_list *evdev_devices)
 625 {
 626         struct evdev_device *device;
 627         struct wl_array keys;
 628         unsigned int i, set;
 629         char evdev_keys[(KEY_CNT + 7) / 8];
 630         char all_keys[(KEY_CNT + 7) / 8];
 631         uint32_t *k;
 632         int ret;
 633
 634         if (!seat->seat.keyboard)
 635                 return;
 636
 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);
 642                 if (ret < 0) {
 643                         weston_log("failed to get keys for device %s\n",
 644                                 device->devnode);
 645                         continue;
 646                 }
 647                 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
 648                         all_keys[i] |= evdev_keys[i];
 649         }
 650
 651         wl_array_init(&keys);
 652         for (i = 0; i < KEY_CNT; i++) {
 653                 set = all_keys[i >> 3] & (1 << (i & 7));
 654                 if (set) {
 655                         k = wl_array_add(&keys, sizeof *k);
 656                         *k = i;
 657                 }
 658         }
 659
 660         notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
 661
 662         wl_array_release(&keys);
 663 }