1 /*- 2 * Copyright (c) 2014 Jakub Wojciech Klama <jceel@FreeBSD.org> 3 * Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@cicgroup.ru> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include "opt_evdev.h" 31 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/conf.h> 37 #include <sys/malloc.h> 38 #include <sys/bitstring.h> 39 #include <sys/sysctl.h> 40 41 #include <dev/evdev/input.h> 42 #include <dev/evdev/evdev.h> 43 #include <dev/evdev/evdev_private.h> 44 45 #ifdef EVDEV_DEBUG 46 #define debugf(evdev, fmt, args...) printf("evdev: " fmt "\n", ##args) 47 #else 48 #define debugf(evdev, fmt, args...) 49 #endif 50 51 #ifdef FEATURE 52 FEATURE(evdev, "Input event devices support"); 53 #endif 54 55 enum evdev_sparse_result 56 { 57 EV_SKIP_EVENT, /* Event value not changed */ 58 EV_REPORT_EVENT, /* Event value changed */ 59 EV_REPORT_MT_SLOT, /* Event value and MT slot number changed */ 60 }; 61 62 MALLOC_DEFINE(M_EVDEV, "evdev", "evdev memory"); 63 64 int evdev_rcpt_mask = EVDEV_RCPT_SYSMOUSE | EVDEV_RCPT_KBDMUX; 65 66 SYSCTL_NODE(_kern, OID_AUTO, evdev, CTLFLAG_RW, 0, "Evdev args"); 67 SYSCTL_INT(_kern_evdev, OID_AUTO, rcpt_mask, CTLFLAG_RW, &evdev_rcpt_mask, 0, 68 "Who is receiving events: bit0 - sysmouse, bit1 - kbdmux, " 69 "bit2 - mouse hardware, bit3 - keyboard hardware"); 70 71 static void evdev_start_repeat(struct evdev_dev *, uint16_t); 72 static void evdev_stop_repeat(struct evdev_dev *); 73 static int evdev_check_event(struct evdev_dev *, uint16_t, uint16_t, int32_t); 74 75 static inline void 76 bit_change(bitstr_t *bitstr, int bit, int value) 77 { 78 if (value) 79 bit_set(bitstr, bit); 80 else 81 bit_clear(bitstr, bit); 82 } 83 84 struct evdev_dev * 85 evdev_alloc(void) 86 { 87 88 return malloc(sizeof(struct evdev_dev), M_EVDEV, M_WAITOK | M_ZERO); 89 } 90 91 void 92 evdev_free(struct evdev_dev *evdev) 93 { 94 95 if (evdev->ev_cdev != NULL && evdev->ev_cdev->si_drv1 != NULL) 96 evdev_unregister(evdev); 97 98 free(evdev, M_EVDEV); 99 } 100 101 static struct input_absinfo * 102 evdev_alloc_absinfo(void) 103 { 104 105 return (malloc(sizeof(struct input_absinfo) * ABS_CNT, M_EVDEV, 106 M_WAITOK | M_ZERO)); 107 } 108 109 static void 110 evdev_free_absinfo(struct input_absinfo *absinfo) 111 { 112 113 free(absinfo, M_EVDEV); 114 } 115 116 int 117 evdev_set_report_size(struct evdev_dev *evdev, size_t report_size) 118 { 119 if (report_size > KEY_CNT + REL_CNT + ABS_CNT + MAX_MT_SLOTS * MT_CNT + 120 MSC_CNT + LED_CNT + SND_CNT + SW_CNT + FF_CNT) 121 return (EINVAL); 122 123 evdev->ev_report_size = report_size; 124 return (0); 125 } 126 127 static size_t 128 evdev_estimate_report_size(struct evdev_dev *evdev) 129 { 130 size_t size = 0; 131 int res; 132 133 /* 134 * Keyboards generate one event per report but other devices with 135 * buttons like mouses can report events simultaneously 136 */ 137 bit_ffs_at(evdev->ev_key_flags, KEY_OK, KEY_CNT - KEY_OK, &res); 138 if (res == -1) 139 bit_ffs(evdev->ev_key_flags, BTN_MISC, &res); 140 size += (res != -1); 141 bit_count(evdev->ev_key_flags, BTN_MISC, KEY_OK - BTN_MISC, &res); 142 size += res; 143 144 /* All relative axes can be reported simultaneously */ 145 bit_count(evdev->ev_rel_flags, 0, REL_CNT, &res); 146 size += res; 147 148 /* 149 * All absolute axes can be reported simultaneously. 150 * Multitouch axes can be reported ABS_MT_SLOT times 151 */ 152 if (evdev->ev_absinfo != NULL) { 153 bit_count(evdev->ev_abs_flags, 0, ABS_CNT, &res); 154 size += res; 155 bit_count(evdev->ev_abs_flags, ABS_MT_FIRST, MT_CNT, &res); 156 if (res > 0) { 157 res++; /* ABS_MT_SLOT or SYN_MT_REPORT */ 158 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 159 /* MT type B */ 160 size += res * MAXIMAL_MT_SLOT(evdev); 161 else 162 /* MT type A */ 163 size += res * (MAX_MT_REPORTS - 1); 164 } 165 } 166 167 /* All misc events can be reported simultaneously */ 168 bit_count(evdev->ev_msc_flags, 0, MSC_CNT, &res); 169 size += res; 170 171 /* All leds can be reported simultaneously */ 172 bit_count(evdev->ev_led_flags, 0, LED_CNT, &res); 173 size += res; 174 175 /* Assume other events are generated once per report */ 176 bit_ffs(evdev->ev_snd_flags, SND_CNT, &res); 177 size += (res != -1); 178 179 bit_ffs(evdev->ev_sw_flags, SW_CNT, &res); 180 size += (res != -1); 181 182 /* XXX: FF part is not implemented yet */ 183 184 size++; /* SYN_REPORT */ 185 return (size); 186 } 187 188 int 189 evdev_register(struct evdev_dev *evdev) 190 { 191 int ret; 192 193 debugf(evdev, "%s: registered evdev provider: %s <%s>\n", 194 evdev->ev_shortname, evdev->ev_name, evdev->ev_serial); 195 196 /* Initialize internal structures */ 197 mtx_init(&evdev->ev_mtx, "evmtx", NULL, MTX_DEF); 198 LIST_INIT(&evdev->ev_clients); 199 200 if (evdev_event_supported(evdev, EV_REP) && 201 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 202 /* Initialize callout */ 203 callout_init_mtx(&evdev->ev_rep_callout, &evdev->ev_mtx, 0); 204 205 if (evdev->ev_rep[REP_DELAY] == 0 && 206 evdev->ev_rep[REP_PERIOD] == 0) { 207 /* Supply default values */ 208 evdev->ev_rep[REP_DELAY] = 250; 209 evdev->ev_rep[REP_PERIOD] = 33; 210 } 211 } 212 213 /* Initialize multitouch protocol type B states */ 214 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT) && 215 evdev->ev_absinfo != NULL && MAXIMAL_MT_SLOT(evdev) > 0) 216 evdev_mt_init(evdev); 217 218 /* Estimate maximum report size */ 219 if (evdev->ev_report_size == 0) { 220 ret = evdev_set_report_size(evdev, 221 evdev_estimate_report_size(evdev)); 222 if (ret != 0) 223 goto bail_out; 224 } 225 226 /* Create char device node */ 227 ret = evdev_cdev_create(evdev); 228 bail_out: 229 if (ret != 0) 230 mtx_destroy(&evdev->ev_mtx); 231 232 return (ret); 233 } 234 235 int 236 evdev_unregister(struct evdev_dev *evdev) 237 { 238 struct evdev_client *client; 239 int ret; 240 debugf(evdev, "%s: unregistered evdev provider: %s\n", 241 evdev->ev_shortname, evdev->ev_name); 242 243 EVDEV_LOCK(evdev); 244 evdev->ev_cdev->si_drv1 = NULL; 245 /* Wake up sleepers */ 246 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 247 evdev_revoke_client(client); 248 evdev_dispose_client(evdev, client); 249 EVDEV_CLIENT_LOCKQ(client); 250 evdev_notify_event(client); 251 EVDEV_CLIENT_UNLOCKQ(client); 252 } 253 EVDEV_UNLOCK(evdev); 254 255 /* destroy_dev can sleep so release lock */ 256 ret = evdev_cdev_destroy(evdev); 257 evdev->ev_cdev = NULL; 258 if (ret == 0) 259 mtx_destroy(&evdev->ev_mtx); 260 261 evdev_free_absinfo(evdev->ev_absinfo); 262 evdev_mt_free(evdev); 263 264 return (ret); 265 } 266 267 inline void 268 evdev_set_name(struct evdev_dev *evdev, const char *name) 269 { 270 271 snprintf(evdev->ev_name, NAMELEN, "%s", name); 272 } 273 274 inline void 275 evdev_set_id(struct evdev_dev *evdev, uint16_t bustype, uint16_t vendor, 276 uint16_t product, uint16_t version) 277 { 278 279 evdev->ev_id = (struct input_id) { 280 .bustype = bustype, 281 .vendor = vendor, 282 .product = product, 283 .version = version 284 }; 285 } 286 287 inline void 288 evdev_set_phys(struct evdev_dev *evdev, const char *name) 289 { 290 291 snprintf(evdev->ev_shortname, NAMELEN, "%s", name); 292 } 293 294 inline void 295 evdev_set_serial(struct evdev_dev *evdev, const char *serial) 296 { 297 298 snprintf(evdev->ev_serial, NAMELEN, "%s", serial); 299 } 300 301 inline void 302 evdev_set_methods(struct evdev_dev *evdev, void *softc, 303 struct evdev_methods *methods) 304 { 305 306 evdev->ev_methods = methods; 307 evdev->ev_softc = softc; 308 } 309 310 inline void 311 evdev_support_prop(struct evdev_dev *evdev, uint16_t prop) 312 { 313 314 KASSERT(prop < INPUT_PROP_CNT, ("invalid evdev input property")); 315 bit_set(evdev->ev_prop_flags, prop); 316 } 317 318 inline void 319 evdev_support_event(struct evdev_dev *evdev, uint16_t type) 320 { 321 322 KASSERT(type < EV_CNT, ("invalid evdev event property")); 323 bit_set(evdev->ev_type_flags, type); 324 } 325 326 inline void 327 evdev_support_key(struct evdev_dev *evdev, uint16_t code) 328 { 329 330 KASSERT(code < KEY_CNT, ("invalid evdev key property")); 331 bit_set(evdev->ev_key_flags, code); 332 } 333 334 inline void 335 evdev_support_rel(struct evdev_dev *evdev, uint16_t code) 336 { 337 338 KASSERT(code < REL_CNT, ("invalid evdev rel property")); 339 bit_set(evdev->ev_rel_flags, code); 340 } 341 342 inline void 343 evdev_support_abs(struct evdev_dev *evdev, uint16_t code, int32_t value, 344 int32_t minimum, int32_t maximum, int32_t fuzz, int32_t flat, 345 int32_t resolution) 346 { 347 struct input_absinfo absinfo; 348 349 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 350 351 absinfo = (struct input_absinfo) { 352 .value = value, 353 .minimum = minimum, 354 .maximum = maximum, 355 .fuzz = fuzz, 356 .flat = flat, 357 .resolution = resolution, 358 }; 359 evdev_set_abs_bit(evdev, code); 360 evdev_set_absinfo(evdev, code, &absinfo); 361 } 362 363 inline void 364 evdev_set_abs_bit(struct evdev_dev *evdev, uint16_t code) 365 { 366 367 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 368 if (evdev->ev_absinfo == NULL) 369 evdev->ev_absinfo = evdev_alloc_absinfo(); 370 bit_set(evdev->ev_abs_flags, code); 371 } 372 373 inline void 374 evdev_support_msc(struct evdev_dev *evdev, uint16_t code) 375 { 376 377 KASSERT(code < MSC_CNT, ("invalid evdev msc property")); 378 bit_set(evdev->ev_msc_flags, code); 379 } 380 381 382 inline void 383 evdev_support_led(struct evdev_dev *evdev, uint16_t code) 384 { 385 386 KASSERT(code < LED_CNT, ("invalid evdev led property")); 387 bit_set(evdev->ev_led_flags, code); 388 } 389 390 inline void 391 evdev_support_snd(struct evdev_dev *evdev, uint16_t code) 392 { 393 394 KASSERT(code < SND_CNT, ("invalid evdev snd property")); 395 bit_set(evdev->ev_snd_flags, code); 396 } 397 398 inline void 399 evdev_support_sw(struct evdev_dev *evdev, uint16_t code) 400 { 401 402 KASSERT(code < SW_CNT, ("invalid evdev sw property")); 403 bit_set(evdev->ev_sw_flags, code); 404 } 405 406 bool 407 evdev_event_supported(struct evdev_dev *evdev, uint16_t type) 408 { 409 410 KASSERT(type < EV_CNT, ("invalid evdev event property")); 411 return (bit_test(evdev->ev_type_flags, type)); 412 } 413 414 inline void 415 evdev_set_absinfo(struct evdev_dev *evdev, uint16_t axis, 416 struct input_absinfo *absinfo) 417 { 418 419 KASSERT(axis < ABS_CNT, ("invalid evdev abs property")); 420 421 if (axis == ABS_MT_SLOT && 422 (absinfo->maximum < 1 || absinfo->maximum >= MAX_MT_SLOTS)) 423 return; 424 425 if (evdev->ev_absinfo == NULL) 426 evdev->ev_absinfo = evdev_alloc_absinfo(); 427 428 if (axis == ABS_MT_SLOT) 429 evdev->ev_absinfo[ABS_MT_SLOT].maximum = absinfo->maximum; 430 else 431 memcpy(&evdev->ev_absinfo[axis], absinfo, 432 sizeof(struct input_absinfo)); 433 } 434 435 inline void 436 evdev_set_repeat_params(struct evdev_dev *evdev, uint16_t property, int value) 437 { 438 439 KASSERT(property < REP_CNT, ("invalid evdev repeat property")); 440 evdev->ev_rep[property] = value; 441 } 442 443 inline void 444 evdev_set_flag(struct evdev_dev *evdev, uint16_t flag) 445 { 446 447 KASSERT(flag < EVDEV_FLAG_CNT, ("invalid evdev flag property")); 448 bit_set(evdev->ev_flags, flag); 449 } 450 451 static int 452 evdev_check_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 453 int32_t value) 454 { 455 456 if (type >= EV_CNT) 457 return (EINVAL); 458 459 /* Allow SYN events implicitly */ 460 if (type != EV_SYN && !evdev_event_supported(evdev, type)) 461 return (EINVAL); 462 463 switch (type) { 464 case EV_SYN: 465 if (code >= SYN_CNT) 466 return (EINVAL); 467 break; 468 469 case EV_KEY: 470 if (code >= KEY_CNT) 471 return (EINVAL); 472 if (!bit_test(evdev->ev_key_flags, code)) 473 return (EINVAL); 474 break; 475 476 case EV_REL: 477 if (code >= REL_CNT) 478 return (EINVAL); 479 if (!bit_test(evdev->ev_rel_flags, code)) 480 return (EINVAL); 481 break; 482 483 case EV_ABS: 484 if (code >= ABS_CNT) 485 return (EINVAL); 486 if (!bit_test(evdev->ev_abs_flags, code)) 487 return (EINVAL); 488 if (code == ABS_MT_SLOT && 489 (value < 0 || value > MAXIMAL_MT_SLOT(evdev))) 490 return (EINVAL); 491 if (ABS_IS_MT(code) && evdev->ev_mt == NULL && 492 bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 493 return (EINVAL); 494 break; 495 496 case EV_MSC: 497 if (code >= MSC_CNT) 498 return (EINVAL); 499 if (!bit_test(evdev->ev_msc_flags, code)) 500 return (EINVAL); 501 break; 502 503 case EV_LED: 504 if (code >= LED_CNT) 505 return (EINVAL); 506 if (!bit_test(evdev->ev_led_flags, code)) 507 return (EINVAL); 508 break; 509 510 case EV_SND: 511 if (code >= SND_CNT) 512 return (EINVAL); 513 if (!bit_test(evdev->ev_snd_flags, code)) 514 return (EINVAL); 515 break; 516 517 case EV_SW: 518 if (code >= SW_CNT) 519 return (EINVAL); 520 if (!bit_test(evdev->ev_sw_flags, code)) 521 return (EINVAL); 522 break; 523 524 case EV_REP: 525 if (code >= REP_CNT) 526 return (EINVAL); 527 break; 528 529 default: 530 return (EINVAL); 531 } 532 533 return (0); 534 } 535 536 static void 537 evdev_modify_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 538 int32_t *value) 539 { 540 541 EVDEV_LOCK_ASSERT(evdev); 542 543 switch (type) { 544 case EV_KEY: 545 if (!evdev_event_supported(evdev, EV_REP)) 546 break; 547 548 if (!bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 549 /* Detect driver key repeats. */ 550 if (bit_test(evdev->ev_key_states, code) && 551 *value == KEY_EVENT_DOWN) 552 *value = KEY_EVENT_REPEAT; 553 } else { 554 /* Start/stop callout for evdev repeats */ 555 if (bit_test(evdev->ev_key_states, code) == !*value) { 556 if (*value == KEY_EVENT_DOWN) 557 evdev_start_repeat(evdev, code); 558 else 559 evdev_stop_repeat(evdev); 560 } 561 } 562 break; 563 564 case EV_ABS: 565 /* TBD: implement fuzz */ 566 break; 567 } 568 } 569 570 static enum evdev_sparse_result 571 evdev_sparse_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 572 int32_t value) 573 { 574 int32_t last_mt_slot; 575 576 EVDEV_LOCK_ASSERT(evdev); 577 578 /* 579 * For certain event types, update device state bits 580 * and convert level reporting to edge reporting 581 */ 582 switch (type) { 583 case EV_KEY: 584 switch (value) { 585 case KEY_EVENT_UP: 586 case KEY_EVENT_DOWN: 587 if (bit_test(evdev->ev_key_states, code) == value) 588 return (EV_SKIP_EVENT); 589 bit_change(evdev->ev_key_states, code, value); 590 break; 591 592 case KEY_EVENT_REPEAT: 593 if (bit_test(evdev->ev_key_states, code) == 0 || 594 !evdev_event_supported(evdev, EV_REP)) 595 return (EV_SKIP_EVENT); 596 break; 597 598 default: 599 return (EV_SKIP_EVENT); 600 } 601 break; 602 603 case EV_LED: 604 if (bit_test(evdev->ev_led_states, code) == value) 605 return (EV_SKIP_EVENT); 606 bit_change(evdev->ev_led_states, code, value); 607 break; 608 609 case EV_SND: 610 if (bit_test(evdev->ev_snd_states, code) == value) 611 return (EV_SKIP_EVENT); 612 bit_change(evdev->ev_snd_states, code, value); 613 break; 614 615 case EV_SW: 616 if (bit_test(evdev->ev_sw_states, code) == value) 617 return (EV_SKIP_EVENT); 618 bit_change(evdev->ev_sw_states, code, value); 619 break; 620 621 case EV_REP: 622 if (evdev->ev_rep[code] == value) 623 return (EV_SKIP_EVENT); 624 evdev_set_repeat_params(evdev, code, value); 625 break; 626 627 case EV_REL: 628 if (value == 0) 629 return (EV_SKIP_EVENT); 630 break; 631 632 /* For EV_ABS, save last value in absinfo and ev_mt_states */ 633 case EV_ABS: 634 switch (code) { 635 case ABS_MT_SLOT: 636 /* Postpone ABS_MT_SLOT till next event */ 637 evdev_set_last_mt_slot(evdev, value); 638 return (EV_SKIP_EVENT); 639 640 case ABS_MT_FIRST ... ABS_MT_LAST: 641 /* Pass MT protocol type A events as is */ 642 if (!bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 643 break; 644 /* Don`t repeat MT protocol type B events */ 645 last_mt_slot = evdev_get_last_mt_slot(evdev); 646 if (evdev_get_mt_value(evdev, last_mt_slot, code) 647 == value) 648 return (EV_SKIP_EVENT); 649 evdev_set_mt_value(evdev, last_mt_slot, code, value); 650 if (last_mt_slot != CURRENT_MT_SLOT(evdev)) { 651 CURRENT_MT_SLOT(evdev) = last_mt_slot; 652 evdev->ev_report_opened = true; 653 return (EV_REPORT_MT_SLOT); 654 } 655 break; 656 657 default: 658 if (evdev->ev_absinfo[code].value == value) 659 return (EV_SKIP_EVENT); 660 evdev->ev_absinfo[code].value = value; 661 } 662 break; 663 664 case EV_SYN: 665 if (code == SYN_REPORT) { 666 /* Skip empty reports */ 667 if (!evdev->ev_report_opened) 668 return (EV_SKIP_EVENT); 669 evdev->ev_report_opened = false; 670 return (EV_REPORT_EVENT); 671 } 672 break; 673 } 674 675 evdev->ev_report_opened = true; 676 return (EV_REPORT_EVENT); 677 } 678 679 static void 680 evdev_propagate_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 681 int32_t value) 682 { 683 struct evdev_client *client; 684 685 debugf(evdev, "%s pushed event %d/%d/%d", 686 evdev->ev_shortname, type, code, value); 687 688 EVDEV_LOCK_ASSERT(evdev); 689 690 /* Propagate event through all clients */ 691 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 692 if (evdev->ev_grabber != NULL && evdev->ev_grabber != client) 693 continue; 694 695 EVDEV_CLIENT_LOCKQ(client); 696 evdev_client_push(client, type, code, value); 697 if (type == EV_SYN && code == SYN_REPORT) 698 evdev_notify_event(client); 699 EVDEV_CLIENT_UNLOCKQ(client); 700 } 701 702 /* Update counters */ 703 evdev->ev_event_count++; 704 if (type == EV_SYN && code == SYN_REPORT) 705 evdev->ev_report_count++; 706 } 707 708 void 709 evdev_send_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 710 int32_t value) 711 { 712 enum evdev_sparse_result sparse; 713 714 EVDEV_LOCK_ASSERT(evdev); 715 716 sparse = evdev_sparse_event(evdev, type, code, value); 717 switch (sparse) { 718 case EV_REPORT_MT_SLOT: 719 /* report postponed ABS_MT_SLOT */ 720 evdev_propagate_event(evdev, EV_ABS, ABS_MT_SLOT, 721 CURRENT_MT_SLOT(evdev)); 722 /* FALLTHROUGH */ 723 case EV_REPORT_EVENT: 724 evdev_propagate_event(evdev, type, code, value); 725 /* FALLTHROUGH */ 726 case EV_SKIP_EVENT: 727 break; 728 } 729 } 730 731 int 732 evdev_push_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 733 int32_t value) 734 { 735 736 if (evdev_check_event(evdev, type, code, value) != 0) 737 return (EINVAL); 738 739 EVDEV_LOCK(evdev); 740 evdev_modify_event(evdev, type, code, &value); 741 if (type == EV_SYN && code == SYN_REPORT && evdev->ev_report_opened && 742 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_STCOMPAT)) 743 evdev_send_mt_compat(evdev); 744 evdev_send_event(evdev, type, code, value); 745 EVDEV_UNLOCK(evdev); 746 747 return (0); 748 } 749 750 int 751 evdev_inject_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 752 int32_t value) 753 { 754 int ret = 0; 755 756 switch (type) { 757 case EV_REP: 758 /* evdev repeats should not be processed by hardware driver */ 759 if (bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 760 goto push; 761 /* FALLTHROUGH */ 762 case EV_LED: 763 case EV_MSC: 764 case EV_SND: 765 case EV_FF: 766 if (evdev->ev_methods != NULL && 767 evdev->ev_methods->ev_event != NULL) 768 evdev->ev_methods->ev_event(evdev, evdev->ev_softc, 769 type, code, value); 770 /* 771 * Leds and driver repeats should be reported in ev_event 772 * method body to interoperate with kbdmux states and rates 773 * propagation so both ways (ioctl and evdev) of changing it 774 * will produce only one evdev event report to client. 775 */ 776 if (type == EV_LED || type == EV_REP) 777 break; 778 /* FALLTHROUGH */ 779 case EV_SYN: 780 case EV_KEY: 781 case EV_REL: 782 case EV_ABS: 783 case EV_SW: 784 push: 785 ret = evdev_push_event(evdev, type, code, value); 786 break; 787 788 default: 789 ret = EINVAL; 790 } 791 792 return (ret); 793 } 794 795 inline int 796 evdev_sync(struct evdev_dev *evdev) 797 { 798 799 return (evdev_push_event(evdev, EV_SYN, SYN_REPORT, 1)); 800 } 801 802 803 inline int 804 evdev_mt_sync(struct evdev_dev *evdev) 805 { 806 807 return (evdev_push_event(evdev, EV_SYN, SYN_MT_REPORT, 1)); 808 } 809 810 int 811 evdev_register_client(struct evdev_dev *evdev, struct evdev_client *client) 812 { 813 int ret = 0; 814 815 debugf(evdev, "adding new client for device %s", evdev->ev_shortname); 816 817 EVDEV_LOCK_ASSERT(evdev); 818 819 if (LIST_EMPTY(&evdev->ev_clients) && evdev->ev_methods != NULL && 820 evdev->ev_methods->ev_open != NULL) { 821 debugf(evdev, "calling ev_open() on device %s", 822 evdev->ev_shortname); 823 ret = evdev->ev_methods->ev_open(evdev, evdev->ev_softc); 824 } 825 if (ret == 0) 826 LIST_INSERT_HEAD(&evdev->ev_clients, client, ec_link); 827 return (ret); 828 } 829 830 void 831 evdev_dispose_client(struct evdev_dev *evdev, struct evdev_client *client) 832 { 833 debugf(evdev, "removing client for device %s", evdev->ev_shortname); 834 835 EVDEV_LOCK_ASSERT(evdev); 836 837 LIST_REMOVE(client, ec_link); 838 if (LIST_EMPTY(&evdev->ev_clients)) { 839 if (evdev->ev_methods != NULL && 840 evdev->ev_methods->ev_close != NULL) 841 evdev->ev_methods->ev_close(evdev, evdev->ev_softc); 842 if (evdev_event_supported(evdev, EV_REP) && 843 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 844 evdev_stop_repeat(evdev); 845 } 846 evdev_release_client(evdev, client); 847 } 848 849 int 850 evdev_grab_client(struct evdev_dev *evdev, struct evdev_client *client) 851 { 852 853 EVDEV_LOCK_ASSERT(evdev); 854 855 if (evdev->ev_grabber != NULL) 856 return (EBUSY); 857 858 evdev->ev_grabber = client; 859 860 return (0); 861 } 862 863 int 864 evdev_release_client(struct evdev_dev *evdev, struct evdev_client *client) 865 { 866 867 EVDEV_LOCK_ASSERT(evdev); 868 869 if (evdev->ev_grabber != client) 870 return (EINVAL); 871 872 evdev->ev_grabber = NULL; 873 874 return (0); 875 } 876 877 static void 878 evdev_repeat_callout(void *arg) 879 { 880 struct evdev_dev *evdev = (struct evdev_dev *)arg; 881 882 evdev_send_event(evdev, EV_KEY, evdev->ev_rep_key, KEY_EVENT_REPEAT); 883 evdev_send_event(evdev, EV_SYN, SYN_REPORT, 1); 884 885 if (evdev->ev_rep[REP_PERIOD]) 886 callout_reset(&evdev->ev_rep_callout, 887 evdev->ev_rep[REP_PERIOD] * hz / 1000, 888 evdev_repeat_callout, evdev); 889 else 890 evdev->ev_rep_key = KEY_RESERVED; 891 } 892 893 static void 894 evdev_start_repeat(struct evdev_dev *evdev, uint16_t key) 895 { 896 897 EVDEV_LOCK_ASSERT(evdev); 898 899 if (evdev->ev_rep[REP_DELAY]) { 900 evdev->ev_rep_key = key; 901 callout_reset(&evdev->ev_rep_callout, 902 evdev->ev_rep[REP_DELAY] * hz / 1000, 903 evdev_repeat_callout, evdev); 904 } 905 } 906 907 static void 908 evdev_stop_repeat(struct evdev_dev *evdev) 909 { 910 911 EVDEV_LOCK_ASSERT(evdev); 912 913 if (evdev->ev_rep_key != KEY_RESERVED) { 914 callout_stop(&evdev->ev_rep_callout); 915 evdev->ev_rep_key = KEY_RESERVED; 916 } 917 } 918