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 != NULL && evdev->ev_cdev != NULL && 96 evdev->ev_cdev->si_drv1 != NULL) 97 evdev_unregister(evdev); 98 99 free(evdev, M_EVDEV); 100 } 101 102 static struct input_absinfo * 103 evdev_alloc_absinfo(void) 104 { 105 106 return (malloc(sizeof(struct input_absinfo) * ABS_CNT, M_EVDEV, 107 M_WAITOK | M_ZERO)); 108 } 109 110 static void 111 evdev_free_absinfo(struct input_absinfo *absinfo) 112 { 113 114 free(absinfo, M_EVDEV); 115 } 116 117 int 118 evdev_set_report_size(struct evdev_dev *evdev, size_t report_size) 119 { 120 if (report_size > KEY_CNT + REL_CNT + ABS_CNT + MAX_MT_SLOTS * MT_CNT + 121 MSC_CNT + LED_CNT + SND_CNT + SW_CNT + FF_CNT) 122 return (EINVAL); 123 124 evdev->ev_report_size = report_size; 125 return (0); 126 } 127 128 static size_t 129 evdev_estimate_report_size(struct evdev_dev *evdev) 130 { 131 size_t size = 0; 132 int res; 133 134 /* 135 * Keyboards generate one event per report but other devices with 136 * buttons like mouses can report events simultaneously 137 */ 138 bit_ffs_at(evdev->ev_key_flags, KEY_OK, KEY_CNT - KEY_OK, &res); 139 if (res == -1) 140 bit_ffs(evdev->ev_key_flags, BTN_MISC, &res); 141 size += (res != -1); 142 bit_count(evdev->ev_key_flags, BTN_MISC, KEY_OK - BTN_MISC, &res); 143 size += res; 144 145 /* All relative axes can be reported simultaneously */ 146 bit_count(evdev->ev_rel_flags, 0, REL_CNT, &res); 147 size += res; 148 149 /* 150 * All absolute axes can be reported simultaneously. 151 * Multitouch axes can be reported ABS_MT_SLOT times 152 */ 153 if (evdev->ev_absinfo != NULL) { 154 bit_count(evdev->ev_abs_flags, 0, ABS_CNT, &res); 155 size += res; 156 bit_count(evdev->ev_abs_flags, ABS_MT_FIRST, MT_CNT, &res); 157 if (res > 0) { 158 res++; /* ABS_MT_SLOT or SYN_MT_REPORT */ 159 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 160 /* MT type B */ 161 size += res * MAXIMAL_MT_SLOT(evdev); 162 else 163 /* MT type A */ 164 size += res * (MAX_MT_REPORTS - 1); 165 } 166 } 167 168 /* All misc events can be reported simultaneously */ 169 bit_count(evdev->ev_msc_flags, 0, MSC_CNT, &res); 170 size += res; 171 172 /* All leds can be reported simultaneously */ 173 bit_count(evdev->ev_led_flags, 0, LED_CNT, &res); 174 size += res; 175 176 /* Assume other events are generated once per report */ 177 bit_ffs(evdev->ev_snd_flags, SND_CNT, &res); 178 size += (res != -1); 179 180 bit_ffs(evdev->ev_sw_flags, SW_CNT, &res); 181 size += (res != -1); 182 183 /* XXX: FF part is not implemented yet */ 184 185 size++; /* SYN_REPORT */ 186 return (size); 187 } 188 189 int 190 evdev_register(struct evdev_dev *evdev) 191 { 192 int ret; 193 194 debugf(evdev, "%s: registered evdev provider: %s <%s>\n", 195 evdev->ev_shortname, evdev->ev_name, evdev->ev_serial); 196 197 /* Initialize internal structures */ 198 mtx_init(&evdev->ev_mtx, "evmtx", NULL, MTX_DEF); 199 LIST_INIT(&evdev->ev_clients); 200 201 if (evdev_event_supported(evdev, EV_REP) && 202 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 203 /* Initialize callout */ 204 callout_init_mtx(&evdev->ev_rep_callout, &evdev->ev_mtx, 0); 205 206 if (evdev->ev_rep[REP_DELAY] == 0 && 207 evdev->ev_rep[REP_PERIOD] == 0) { 208 /* Supply default values */ 209 evdev->ev_rep[REP_DELAY] = 250; 210 evdev->ev_rep[REP_PERIOD] = 33; 211 } 212 } 213 214 /* Initialize multitouch protocol type B states */ 215 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT) && 216 evdev->ev_absinfo != NULL && MAXIMAL_MT_SLOT(evdev) > 0) 217 evdev_mt_init(evdev); 218 219 /* Estimate maximum report size */ 220 if (evdev->ev_report_size == 0) { 221 ret = evdev_set_report_size(evdev, 222 evdev_estimate_report_size(evdev)); 223 if (ret != 0) 224 goto bail_out; 225 } 226 227 /* Create char device node */ 228 ret = evdev_cdev_create(evdev); 229 bail_out: 230 if (ret != 0) 231 mtx_destroy(&evdev->ev_mtx); 232 233 return (ret); 234 } 235 236 int 237 evdev_unregister(struct evdev_dev *evdev) 238 { 239 struct evdev_client *client; 240 int ret; 241 debugf(evdev, "%s: unregistered evdev provider: %s\n", 242 evdev->ev_shortname, evdev->ev_name); 243 244 EVDEV_LOCK(evdev); 245 evdev->ev_cdev->si_drv1 = NULL; 246 /* Wake up sleepers */ 247 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 248 evdev_revoke_client(client); 249 evdev_dispose_client(evdev, client); 250 EVDEV_CLIENT_LOCKQ(client); 251 evdev_notify_event(client); 252 EVDEV_CLIENT_UNLOCKQ(client); 253 } 254 EVDEV_UNLOCK(evdev); 255 256 /* destroy_dev can sleep so release lock */ 257 ret = evdev_cdev_destroy(evdev); 258 evdev->ev_cdev = NULL; 259 if (ret == 0) 260 mtx_destroy(&evdev->ev_mtx); 261 262 evdev_free_absinfo(evdev->ev_absinfo); 263 evdev_mt_free(evdev); 264 265 return (ret); 266 } 267 268 inline void 269 evdev_set_name(struct evdev_dev *evdev, const char *name) 270 { 271 272 snprintf(evdev->ev_name, NAMELEN, "%s", name); 273 } 274 275 inline void 276 evdev_set_id(struct evdev_dev *evdev, uint16_t bustype, uint16_t vendor, 277 uint16_t product, uint16_t version) 278 { 279 280 evdev->ev_id = (struct input_id) { 281 .bustype = bustype, 282 .vendor = vendor, 283 .product = product, 284 .version = version 285 }; 286 } 287 288 inline void 289 evdev_set_phys(struct evdev_dev *evdev, const char *name) 290 { 291 292 snprintf(evdev->ev_shortname, NAMELEN, "%s", name); 293 } 294 295 inline void 296 evdev_set_serial(struct evdev_dev *evdev, const char *serial) 297 { 298 299 snprintf(evdev->ev_serial, NAMELEN, "%s", serial); 300 } 301 302 inline void 303 evdev_set_methods(struct evdev_dev *evdev, void *softc, 304 struct evdev_methods *methods) 305 { 306 307 evdev->ev_methods = methods; 308 evdev->ev_softc = softc; 309 } 310 311 inline void 312 evdev_support_prop(struct evdev_dev *evdev, uint16_t prop) 313 { 314 315 KASSERT(prop < INPUT_PROP_CNT, ("invalid evdev input property")); 316 bit_set(evdev->ev_prop_flags, prop); 317 } 318 319 inline void 320 evdev_support_event(struct evdev_dev *evdev, uint16_t type) 321 { 322 323 KASSERT(type < EV_CNT, ("invalid evdev event property")); 324 bit_set(evdev->ev_type_flags, type); 325 } 326 327 inline void 328 evdev_support_key(struct evdev_dev *evdev, uint16_t code) 329 { 330 331 KASSERT(code < KEY_CNT, ("invalid evdev key property")); 332 bit_set(evdev->ev_key_flags, code); 333 } 334 335 inline void 336 evdev_support_rel(struct evdev_dev *evdev, uint16_t code) 337 { 338 339 KASSERT(code < REL_CNT, ("invalid evdev rel property")); 340 bit_set(evdev->ev_rel_flags, code); 341 } 342 343 inline void 344 evdev_support_abs(struct evdev_dev *evdev, uint16_t code, int32_t value, 345 int32_t minimum, int32_t maximum, int32_t fuzz, int32_t flat, 346 int32_t resolution) 347 { 348 struct input_absinfo absinfo; 349 350 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 351 352 absinfo = (struct input_absinfo) { 353 .value = value, 354 .minimum = minimum, 355 .maximum = maximum, 356 .fuzz = fuzz, 357 .flat = flat, 358 .resolution = resolution, 359 }; 360 evdev_set_abs_bit(evdev, code); 361 evdev_set_absinfo(evdev, code, &absinfo); 362 } 363 364 inline void 365 evdev_set_abs_bit(struct evdev_dev *evdev, uint16_t code) 366 { 367 368 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 369 if (evdev->ev_absinfo == NULL) 370 evdev->ev_absinfo = evdev_alloc_absinfo(); 371 bit_set(evdev->ev_abs_flags, code); 372 } 373 374 inline void 375 evdev_support_msc(struct evdev_dev *evdev, uint16_t code) 376 { 377 378 KASSERT(code < MSC_CNT, ("invalid evdev msc property")); 379 bit_set(evdev->ev_msc_flags, code); 380 } 381 382 383 inline void 384 evdev_support_led(struct evdev_dev *evdev, uint16_t code) 385 { 386 387 KASSERT(code < LED_CNT, ("invalid evdev led property")); 388 bit_set(evdev->ev_led_flags, code); 389 } 390 391 inline void 392 evdev_support_snd(struct evdev_dev *evdev, uint16_t code) 393 { 394 395 KASSERT(code < SND_CNT, ("invalid evdev snd property")); 396 bit_set(evdev->ev_snd_flags, code); 397 } 398 399 inline void 400 evdev_support_sw(struct evdev_dev *evdev, uint16_t code) 401 { 402 403 KASSERT(code < SW_CNT, ("invalid evdev sw property")); 404 bit_set(evdev->ev_sw_flags, code); 405 } 406 407 bool 408 evdev_event_supported(struct evdev_dev *evdev, uint16_t type) 409 { 410 411 KASSERT(type < EV_CNT, ("invalid evdev event property")); 412 return (bit_test(evdev->ev_type_flags, type)); 413 } 414 415 inline void 416 evdev_set_absinfo(struct evdev_dev *evdev, uint16_t axis, 417 struct input_absinfo *absinfo) 418 { 419 420 KASSERT(axis < ABS_CNT, ("invalid evdev abs property")); 421 422 if (axis == ABS_MT_SLOT && 423 (absinfo->maximum < 1 || absinfo->maximum >= MAX_MT_SLOTS)) 424 return; 425 426 if (evdev->ev_absinfo == NULL) 427 evdev->ev_absinfo = evdev_alloc_absinfo(); 428 429 if (axis == ABS_MT_SLOT) 430 evdev->ev_absinfo[ABS_MT_SLOT].maximum = absinfo->maximum; 431 else 432 memcpy(&evdev->ev_absinfo[axis], absinfo, 433 sizeof(struct input_absinfo)); 434 } 435 436 inline void 437 evdev_set_repeat_params(struct evdev_dev *evdev, uint16_t property, int value) 438 { 439 440 KASSERT(property < REP_CNT, ("invalid evdev repeat property")); 441 evdev->ev_rep[property] = value; 442 } 443 444 inline void 445 evdev_set_flag(struct evdev_dev *evdev, uint16_t flag) 446 { 447 448 KASSERT(flag < EVDEV_FLAG_CNT, ("invalid evdev flag property")); 449 bit_set(evdev->ev_flags, flag); 450 } 451 452 static int 453 evdev_check_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 454 int32_t value) 455 { 456 457 if (type >= EV_CNT) 458 return (EINVAL); 459 460 /* Allow SYN events implicitly */ 461 if (type != EV_SYN && !evdev_event_supported(evdev, type)) 462 return (EINVAL); 463 464 switch (type) { 465 case EV_SYN: 466 if (code >= SYN_CNT) 467 return (EINVAL); 468 break; 469 470 case EV_KEY: 471 if (code >= KEY_CNT) 472 return (EINVAL); 473 if (!bit_test(evdev->ev_key_flags, code)) 474 return (EINVAL); 475 break; 476 477 case EV_REL: 478 if (code >= REL_CNT) 479 return (EINVAL); 480 if (!bit_test(evdev->ev_rel_flags, code)) 481 return (EINVAL); 482 break; 483 484 case EV_ABS: 485 if (code >= ABS_CNT) 486 return (EINVAL); 487 if (!bit_test(evdev->ev_abs_flags, code)) 488 return (EINVAL); 489 if (code == ABS_MT_SLOT && 490 (value < 0 || value > MAXIMAL_MT_SLOT(evdev))) 491 return (EINVAL); 492 if (ABS_IS_MT(code) && evdev->ev_mt == NULL && 493 bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 494 return (EINVAL); 495 break; 496 497 case EV_MSC: 498 if (code >= MSC_CNT) 499 return (EINVAL); 500 if (!bit_test(evdev->ev_msc_flags, code)) 501 return (EINVAL); 502 break; 503 504 case EV_LED: 505 if (code >= LED_CNT) 506 return (EINVAL); 507 if (!bit_test(evdev->ev_led_flags, code)) 508 return (EINVAL); 509 break; 510 511 case EV_SND: 512 if (code >= SND_CNT) 513 return (EINVAL); 514 if (!bit_test(evdev->ev_snd_flags, code)) 515 return (EINVAL); 516 break; 517 518 case EV_SW: 519 if (code >= SW_CNT) 520 return (EINVAL); 521 if (!bit_test(evdev->ev_sw_flags, code)) 522 return (EINVAL); 523 break; 524 525 case EV_REP: 526 if (code >= REP_CNT) 527 return (EINVAL); 528 break; 529 530 default: 531 return (EINVAL); 532 } 533 534 return (0); 535 } 536 537 static void 538 evdev_modify_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 539 int32_t *value) 540 { 541 542 EVDEV_LOCK_ASSERT(evdev); 543 544 switch (type) { 545 case EV_KEY: 546 if (!evdev_event_supported(evdev, EV_REP)) 547 break; 548 549 if (!bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 550 /* Detect driver key repeats. */ 551 if (bit_test(evdev->ev_key_states, code) && 552 *value == KEY_EVENT_DOWN) 553 *value = KEY_EVENT_REPEAT; 554 } else { 555 /* Start/stop callout for evdev repeats */ 556 if (bit_test(evdev->ev_key_states, code) == !*value) { 557 if (*value == KEY_EVENT_DOWN) 558 evdev_start_repeat(evdev, code); 559 else 560 evdev_stop_repeat(evdev); 561 } 562 } 563 break; 564 565 case EV_ABS: 566 /* TBD: implement fuzz */ 567 break; 568 } 569 } 570 571 static enum evdev_sparse_result 572 evdev_sparse_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 573 int32_t value) 574 { 575 int32_t last_mt_slot; 576 577 EVDEV_LOCK_ASSERT(evdev); 578 579 /* 580 * For certain event types, update device state bits 581 * and convert level reporting to edge reporting 582 */ 583 switch (type) { 584 case EV_KEY: 585 switch (value) { 586 case KEY_EVENT_UP: 587 case KEY_EVENT_DOWN: 588 if (bit_test(evdev->ev_key_states, code) == value) 589 return (EV_SKIP_EVENT); 590 bit_change(evdev->ev_key_states, code, value); 591 break; 592 593 case KEY_EVENT_REPEAT: 594 if (bit_test(evdev->ev_key_states, code) == 0 || 595 !evdev_event_supported(evdev, EV_REP)) 596 return (EV_SKIP_EVENT); 597 break; 598 599 default: 600 return (EV_SKIP_EVENT); 601 } 602 break; 603 604 case EV_LED: 605 if (bit_test(evdev->ev_led_states, code) == value) 606 return (EV_SKIP_EVENT); 607 bit_change(evdev->ev_led_states, code, value); 608 break; 609 610 case EV_SND: 611 if (bit_test(evdev->ev_snd_states, code) == value) 612 return (EV_SKIP_EVENT); 613 bit_change(evdev->ev_snd_states, code, value); 614 break; 615 616 case EV_SW: 617 if (bit_test(evdev->ev_sw_states, code) == value) 618 return (EV_SKIP_EVENT); 619 bit_change(evdev->ev_sw_states, code, value); 620 break; 621 622 case EV_REP: 623 if (evdev->ev_rep[code] == value) 624 return (EV_SKIP_EVENT); 625 evdev_set_repeat_params(evdev, code, value); 626 break; 627 628 case EV_REL: 629 if (value == 0) 630 return (EV_SKIP_EVENT); 631 break; 632 633 /* For EV_ABS, save last value in absinfo and ev_mt_states */ 634 case EV_ABS: 635 switch (code) { 636 case ABS_MT_SLOT: 637 /* Postpone ABS_MT_SLOT till next event */ 638 evdev_set_last_mt_slot(evdev, value); 639 return (EV_SKIP_EVENT); 640 641 case ABS_MT_FIRST ... ABS_MT_LAST: 642 /* Pass MT protocol type A events as is */ 643 if (!bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 644 break; 645 /* Don`t repeat MT protocol type B events */ 646 last_mt_slot = evdev_get_last_mt_slot(evdev); 647 if (evdev_get_mt_value(evdev, last_mt_slot, code) 648 == value) 649 return (EV_SKIP_EVENT); 650 evdev_set_mt_value(evdev, last_mt_slot, code, value); 651 if (last_mt_slot != CURRENT_MT_SLOT(evdev)) { 652 CURRENT_MT_SLOT(evdev) = last_mt_slot; 653 evdev->ev_report_opened = true; 654 return (EV_REPORT_MT_SLOT); 655 } 656 break; 657 658 default: 659 if (evdev->ev_absinfo[code].value == value) 660 return (EV_SKIP_EVENT); 661 evdev->ev_absinfo[code].value = value; 662 } 663 break; 664 665 case EV_SYN: 666 if (code == SYN_REPORT) { 667 /* Skip empty reports */ 668 if (!evdev->ev_report_opened) 669 return (EV_SKIP_EVENT); 670 evdev->ev_report_opened = false; 671 return (EV_REPORT_EVENT); 672 } 673 break; 674 } 675 676 evdev->ev_report_opened = true; 677 return (EV_REPORT_EVENT); 678 } 679 680 static void 681 evdev_propagate_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 682 int32_t value) 683 { 684 struct evdev_client *client; 685 686 debugf(evdev, "%s pushed event %d/%d/%d", 687 evdev->ev_shortname, type, code, value); 688 689 EVDEV_LOCK_ASSERT(evdev); 690 691 /* Propagate event through all clients */ 692 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 693 if (evdev->ev_grabber != NULL && evdev->ev_grabber != client) 694 continue; 695 696 EVDEV_CLIENT_LOCKQ(client); 697 evdev_client_push(client, type, code, value); 698 if (type == EV_SYN && code == SYN_REPORT) 699 evdev_notify_event(client); 700 EVDEV_CLIENT_UNLOCKQ(client); 701 } 702 703 /* Update counters */ 704 evdev->ev_event_count++; 705 if (type == EV_SYN && code == SYN_REPORT) 706 evdev->ev_report_count++; 707 } 708 709 void 710 evdev_send_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 711 int32_t value) 712 { 713 enum evdev_sparse_result sparse; 714 715 EVDEV_LOCK_ASSERT(evdev); 716 717 sparse = evdev_sparse_event(evdev, type, code, value); 718 switch (sparse) { 719 case EV_REPORT_MT_SLOT: 720 /* report postponed ABS_MT_SLOT */ 721 evdev_propagate_event(evdev, EV_ABS, ABS_MT_SLOT, 722 CURRENT_MT_SLOT(evdev)); 723 /* FALLTHROUGH */ 724 case EV_REPORT_EVENT: 725 evdev_propagate_event(evdev, type, code, value); 726 /* FALLTHROUGH */ 727 case EV_SKIP_EVENT: 728 break; 729 } 730 } 731 732 int 733 evdev_push_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 734 int32_t value) 735 { 736 737 if (evdev_check_event(evdev, type, code, value) != 0) 738 return (EINVAL); 739 740 EVDEV_LOCK(evdev); 741 evdev_modify_event(evdev, type, code, &value); 742 if (type == EV_SYN && code == SYN_REPORT && evdev->ev_report_opened && 743 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_STCOMPAT)) 744 evdev_send_mt_compat(evdev); 745 evdev_send_event(evdev, type, code, value); 746 EVDEV_UNLOCK(evdev); 747 748 return (0); 749 } 750 751 int 752 evdev_inject_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 753 int32_t value) 754 { 755 int ret = 0; 756 757 switch (type) { 758 case EV_REP: 759 /* evdev repeats should not be processed by hardware driver */ 760 if (bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 761 goto push; 762 /* FALLTHROUGH */ 763 case EV_LED: 764 case EV_MSC: 765 case EV_SND: 766 case EV_FF: 767 if (evdev->ev_methods != NULL && 768 evdev->ev_methods->ev_event != NULL) 769 evdev->ev_methods->ev_event(evdev, evdev->ev_softc, 770 type, code, value); 771 /* 772 * Leds and driver repeats should be reported in ev_event 773 * method body to interoperate with kbdmux states and rates 774 * propagation so both ways (ioctl and evdev) of changing it 775 * will produce only one evdev event report to client. 776 */ 777 if (type == EV_LED || type == EV_REP) 778 break; 779 /* FALLTHROUGH */ 780 case EV_SYN: 781 case EV_KEY: 782 case EV_REL: 783 case EV_ABS: 784 case EV_SW: 785 push: 786 ret = evdev_push_event(evdev, type, code, value); 787 break; 788 789 default: 790 ret = EINVAL; 791 } 792 793 return (ret); 794 } 795 796 inline int 797 evdev_sync(struct evdev_dev *evdev) 798 { 799 800 return (evdev_push_event(evdev, EV_SYN, SYN_REPORT, 1)); 801 } 802 803 804 inline int 805 evdev_mt_sync(struct evdev_dev *evdev) 806 { 807 808 return (evdev_push_event(evdev, EV_SYN, SYN_MT_REPORT, 1)); 809 } 810 811 int 812 evdev_register_client(struct evdev_dev *evdev, struct evdev_client *client) 813 { 814 int ret = 0; 815 816 debugf(evdev, "adding new client for device %s", evdev->ev_shortname); 817 818 EVDEV_LOCK_ASSERT(evdev); 819 820 if (LIST_EMPTY(&evdev->ev_clients) && evdev->ev_methods != NULL && 821 evdev->ev_methods->ev_open != NULL) { 822 debugf(evdev, "calling ev_open() on device %s", 823 evdev->ev_shortname); 824 ret = evdev->ev_methods->ev_open(evdev, evdev->ev_softc); 825 } 826 if (ret == 0) 827 LIST_INSERT_HEAD(&evdev->ev_clients, client, ec_link); 828 return (ret); 829 } 830 831 void 832 evdev_dispose_client(struct evdev_dev *evdev, struct evdev_client *client) 833 { 834 debugf(evdev, "removing client for device %s", evdev->ev_shortname); 835 836 EVDEV_LOCK_ASSERT(evdev); 837 838 LIST_REMOVE(client, ec_link); 839 if (LIST_EMPTY(&evdev->ev_clients)) { 840 if (evdev->ev_methods != NULL && 841 evdev->ev_methods->ev_close != NULL) 842 evdev->ev_methods->ev_close(evdev, evdev->ev_softc); 843 if (evdev_event_supported(evdev, EV_REP) && 844 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 845 evdev_stop_repeat(evdev); 846 } 847 evdev_release_client(evdev, client); 848 } 849 850 int 851 evdev_grab_client(struct evdev_dev *evdev, struct evdev_client *client) 852 { 853 854 EVDEV_LOCK_ASSERT(evdev); 855 856 if (evdev->ev_grabber != NULL) 857 return (EBUSY); 858 859 evdev->ev_grabber = client; 860 861 return (0); 862 } 863 864 int 865 evdev_release_client(struct evdev_dev *evdev, struct evdev_client *client) 866 { 867 868 EVDEV_LOCK_ASSERT(evdev); 869 870 if (evdev->ev_grabber != client) 871 return (EINVAL); 872 873 evdev->ev_grabber = NULL; 874 875 return (0); 876 } 877 878 static void 879 evdev_repeat_callout(void *arg) 880 { 881 struct evdev_dev *evdev = (struct evdev_dev *)arg; 882 883 evdev_send_event(evdev, EV_KEY, evdev->ev_rep_key, KEY_EVENT_REPEAT); 884 evdev_send_event(evdev, EV_SYN, SYN_REPORT, 1); 885 886 if (evdev->ev_rep[REP_PERIOD]) 887 callout_reset(&evdev->ev_rep_callout, 888 evdev->ev_rep[REP_PERIOD] * hz / 1000, 889 evdev_repeat_callout, evdev); 890 else 891 evdev->ev_rep_key = KEY_RESERVED; 892 } 893 894 static void 895 evdev_start_repeat(struct evdev_dev *evdev, uint16_t key) 896 { 897 898 EVDEV_LOCK_ASSERT(evdev); 899 900 if (evdev->ev_rep[REP_DELAY]) { 901 evdev->ev_rep_key = key; 902 callout_reset(&evdev->ev_rep_callout, 903 evdev->ev_rep[REP_DELAY] * hz / 1000, 904 evdev_repeat_callout, evdev); 905 } 906 } 907 908 static void 909 evdev_stop_repeat(struct evdev_dev *evdev) 910 { 911 912 EVDEV_LOCK_ASSERT(evdev); 913 914 if (evdev->ev_rep_key != KEY_RESERVED) { 915 callout_stop(&evdev->ev_rep_callout); 916 evdev->ev_rep_key = KEY_RESERVED; 917 } 918 } 919