1 /*- 2 * Copyright (c) 2014 Jakub Wojciech Klama <[email protected]> 3 * Copyright (c) 2015-2016 Vladimir Kondratyev <[email protected]> 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/param.h> 33 #include <sys/bitstring.h> 34 #include <sys/conf.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/module.h> 38 #include <sys/sysctl.h> 39 #include <sys/systm.h> 40 41 #include <dev/evdev/evdev.h> 42 #include <dev/evdev/evdev_private.h> 43 #include <dev/evdev/input.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 int evdev_sysmouse_t_axis = 0; 66 67 #ifdef EVDEV_SUPPORT 68 SYSCTL_NODE(_kern, OID_AUTO, evdev, CTLFLAG_RW, 0, "Evdev args"); 69 SYSCTL_INT(_kern_evdev, OID_AUTO, rcpt_mask, CTLFLAG_RW, &evdev_rcpt_mask, 0, 70 "Who is receiving events: bit0 - sysmouse, bit1 - kbdmux, " 71 "bit2 - mouse hardware, bit3 - keyboard hardware"); 72 SYSCTL_INT(_kern_evdev, OID_AUTO, sysmouse_t_axis, CTLFLAG_RW, 73 &evdev_sysmouse_t_axis, 0, "Extract T-axis from 0-none, 1-ums, 2-psm"); 74 #endif 75 76 static void evdev_start_repeat(struct evdev_dev *, uint16_t); 77 static void evdev_stop_repeat(struct evdev_dev *); 78 static int evdev_check_event(struct evdev_dev *, uint16_t, uint16_t, int32_t); 79 80 static inline void 81 bit_change(bitstr_t *bitstr, int bit, int value) 82 { 83 if (value) 84 bit_set(bitstr, bit); 85 else 86 bit_clear(bitstr, bit); 87 } 88 89 struct evdev_dev * 90 evdev_alloc(void) 91 { 92 93 return malloc(sizeof(struct evdev_dev), M_EVDEV, M_WAITOK | M_ZERO); 94 } 95 96 void 97 evdev_free(struct evdev_dev *evdev) 98 { 99 100 if (evdev != NULL && evdev->ev_cdev != NULL && 101 evdev->ev_cdev->si_drv1 != NULL) 102 evdev_unregister(evdev); 103 104 free(evdev, M_EVDEV); 105 } 106 107 static struct input_absinfo * 108 evdev_alloc_absinfo(void) 109 { 110 111 return (malloc(sizeof(struct input_absinfo) * ABS_CNT, M_EVDEV, 112 M_WAITOK | M_ZERO)); 113 } 114 115 static void 116 evdev_free_absinfo(struct input_absinfo *absinfo) 117 { 118 119 free(absinfo, M_EVDEV); 120 } 121 122 int 123 evdev_set_report_size(struct evdev_dev *evdev, size_t report_size) 124 { 125 if (report_size > KEY_CNT + REL_CNT + ABS_CNT + MAX_MT_SLOTS * MT_CNT + 126 MSC_CNT + LED_CNT + SND_CNT + SW_CNT + FF_CNT) 127 return (EINVAL); 128 129 evdev->ev_report_size = report_size; 130 return (0); 131 } 132 133 static size_t 134 evdev_estimate_report_size(struct evdev_dev *evdev) 135 { 136 size_t size = 0; 137 int res; 138 139 /* 140 * Keyboards generate one event per report but other devices with 141 * buttons like mouses can report events simultaneously 142 */ 143 bit_ffs_at(evdev->ev_key_flags, KEY_OK, KEY_CNT - KEY_OK, &res); 144 if (res == -1) 145 bit_ffs(evdev->ev_key_flags, BTN_MISC, &res); 146 size += (res != -1); 147 bit_count(evdev->ev_key_flags, BTN_MISC, KEY_OK - BTN_MISC, &res); 148 size += res; 149 150 /* All relative axes can be reported simultaneously */ 151 bit_count(evdev->ev_rel_flags, 0, REL_CNT, &res); 152 size += res; 153 154 /* 155 * All absolute axes can be reported simultaneously. 156 * Multitouch axes can be reported ABS_MT_SLOT times 157 */ 158 if (evdev->ev_absinfo != NULL) { 159 bit_count(evdev->ev_abs_flags, 0, ABS_CNT, &res); 160 size += res; 161 bit_count(evdev->ev_abs_flags, ABS_MT_FIRST, MT_CNT, &res); 162 if (res > 0) { 163 res++; /* ABS_MT_SLOT or SYN_MT_REPORT */ 164 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 165 /* MT type B */ 166 size += res * MAXIMAL_MT_SLOT(evdev); 167 else 168 /* MT type A */ 169 size += res * (MAX_MT_REPORTS - 1); 170 } 171 } 172 173 /* All misc events can be reported simultaneously */ 174 bit_count(evdev->ev_msc_flags, 0, MSC_CNT, &res); 175 size += res; 176 177 /* All leds can be reported simultaneously */ 178 bit_count(evdev->ev_led_flags, 0, LED_CNT, &res); 179 size += res; 180 181 /* Assume other events are generated once per report */ 182 bit_ffs(evdev->ev_snd_flags, SND_CNT, &res); 183 size += (res != -1); 184 185 bit_ffs(evdev->ev_sw_flags, SW_CNT, &res); 186 size += (res != -1); 187 188 /* XXX: FF part is not implemented yet */ 189 190 size++; /* SYN_REPORT */ 191 return (size); 192 } 193 194 static int 195 evdev_register_common(struct evdev_dev *evdev) 196 { 197 int ret; 198 199 debugf(evdev, "%s: registered evdev provider: %s <%s>\n", 200 evdev->ev_shortname, evdev->ev_name, evdev->ev_serial); 201 202 /* Initialize internal structures */ 203 LIST_INIT(&evdev->ev_clients); 204 205 if (evdev_event_supported(evdev, EV_REP) && 206 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 207 /* Initialize callout */ 208 callout_init_mtx(&evdev->ev_rep_callout, &evdev->ev_mtx, 0); 209 210 if (evdev->ev_rep[REP_DELAY] == 0 && 211 evdev->ev_rep[REP_PERIOD] == 0) { 212 /* Supply default values */ 213 evdev->ev_rep[REP_DELAY] = 250; 214 evdev->ev_rep[REP_PERIOD] = 33; 215 } 216 } 217 218 /* Initialize multitouch protocol type B states */ 219 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT) && 220 evdev->ev_absinfo != NULL && MAXIMAL_MT_SLOT(evdev) > 0) 221 evdev_mt_init(evdev); 222 223 /* Estimate maximum report size */ 224 if (evdev->ev_report_size == 0) { 225 ret = evdev_set_report_size(evdev, 226 evdev_estimate_report_size(evdev)); 227 if (ret != 0) 228 goto bail_out; 229 } 230 231 /* Create char device node */ 232 ret = evdev_cdev_create(evdev); 233 bail_out: 234 return (ret); 235 } 236 237 int 238 evdev_register(struct evdev_dev *evdev) 239 { 240 int ret; 241 242 evdev->ev_lock_type = EV_LOCK_INTERNAL; 243 evdev->ev_lock = &evdev->ev_mtx; 244 mtx_init(&evdev->ev_mtx, "evmtx", NULL, MTX_DEF); 245 246 ret = evdev_register_common(evdev); 247 if (ret != 0) 248 mtx_destroy(&evdev->ev_mtx); 249 250 return (ret); 251 } 252 253 int 254 evdev_register_mtx(struct evdev_dev *evdev, struct mtx *mtx) 255 { 256 257 evdev->ev_lock_type = EV_LOCK_MTX; 258 evdev->ev_lock = mtx; 259 return (evdev_register_common(evdev)); 260 } 261 262 int 263 evdev_unregister(struct evdev_dev *evdev) 264 { 265 struct evdev_client *client; 266 int ret; 267 debugf(evdev, "%s: unregistered evdev provider: %s\n", 268 evdev->ev_shortname, evdev->ev_name); 269 270 EVDEV_LOCK(evdev); 271 evdev->ev_cdev->si_drv1 = NULL; 272 /* Wake up sleepers */ 273 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 274 evdev_revoke_client(client); 275 evdev_dispose_client(evdev, client); 276 EVDEV_CLIENT_LOCKQ(client); 277 evdev_notify_event(client); 278 EVDEV_CLIENT_UNLOCKQ(client); 279 } 280 EVDEV_UNLOCK(evdev); 281 282 /* destroy_dev can sleep so release lock */ 283 ret = evdev_cdev_destroy(evdev); 284 evdev->ev_cdev = NULL; 285 if (ret == 0 && evdev->ev_lock_type == EV_LOCK_INTERNAL) 286 mtx_destroy(&evdev->ev_mtx); 287 288 evdev_free_absinfo(evdev->ev_absinfo); 289 evdev_mt_free(evdev); 290 291 return (ret); 292 } 293 294 inline void 295 evdev_set_name(struct evdev_dev *evdev, const char *name) 296 { 297 298 snprintf(evdev->ev_name, NAMELEN, "%s", name); 299 } 300 301 inline void 302 evdev_set_id(struct evdev_dev *evdev, uint16_t bustype, uint16_t vendor, 303 uint16_t product, uint16_t version) 304 { 305 306 evdev->ev_id = (struct input_id) { 307 .bustype = bustype, 308 .vendor = vendor, 309 .product = product, 310 .version = version 311 }; 312 } 313 314 inline void 315 evdev_set_phys(struct evdev_dev *evdev, const char *name) 316 { 317 318 snprintf(evdev->ev_shortname, NAMELEN, "%s", name); 319 } 320 321 inline void 322 evdev_set_serial(struct evdev_dev *evdev, const char *serial) 323 { 324 325 snprintf(evdev->ev_serial, NAMELEN, "%s", serial); 326 } 327 328 inline void 329 evdev_set_methods(struct evdev_dev *evdev, void *softc, 330 const struct evdev_methods *methods) 331 { 332 333 evdev->ev_methods = methods; 334 evdev->ev_softc = softc; 335 } 336 337 inline void 338 evdev_support_prop(struct evdev_dev *evdev, uint16_t prop) 339 { 340 341 KASSERT(prop < INPUT_PROP_CNT, ("invalid evdev input property")); 342 bit_set(evdev->ev_prop_flags, prop); 343 } 344 345 inline void 346 evdev_support_event(struct evdev_dev *evdev, uint16_t type) 347 { 348 349 KASSERT(type < EV_CNT, ("invalid evdev event property")); 350 bit_set(evdev->ev_type_flags, type); 351 } 352 353 inline void 354 evdev_support_key(struct evdev_dev *evdev, uint16_t code) 355 { 356 357 KASSERT(code < KEY_CNT, ("invalid evdev key property")); 358 bit_set(evdev->ev_key_flags, code); 359 } 360 361 inline void 362 evdev_support_rel(struct evdev_dev *evdev, uint16_t code) 363 { 364 365 KASSERT(code < REL_CNT, ("invalid evdev rel property")); 366 bit_set(evdev->ev_rel_flags, code); 367 } 368 369 inline void 370 evdev_support_abs(struct evdev_dev *evdev, uint16_t code, int32_t value, 371 int32_t minimum, int32_t maximum, int32_t fuzz, int32_t flat, 372 int32_t resolution) 373 { 374 struct input_absinfo absinfo; 375 376 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 377 378 absinfo = (struct input_absinfo) { 379 .value = value, 380 .minimum = minimum, 381 .maximum = maximum, 382 .fuzz = fuzz, 383 .flat = flat, 384 .resolution = resolution, 385 }; 386 evdev_set_abs_bit(evdev, code); 387 evdev_set_absinfo(evdev, code, &absinfo); 388 } 389 390 inline void 391 evdev_set_abs_bit(struct evdev_dev *evdev, uint16_t code) 392 { 393 394 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 395 if (evdev->ev_absinfo == NULL) 396 evdev->ev_absinfo = evdev_alloc_absinfo(); 397 bit_set(evdev->ev_abs_flags, code); 398 } 399 400 inline void 401 evdev_support_msc(struct evdev_dev *evdev, uint16_t code) 402 { 403 404 KASSERT(code < MSC_CNT, ("invalid evdev msc property")); 405 bit_set(evdev->ev_msc_flags, code); 406 } 407 408 409 inline void 410 evdev_support_led(struct evdev_dev *evdev, uint16_t code) 411 { 412 413 KASSERT(code < LED_CNT, ("invalid evdev led property")); 414 bit_set(evdev->ev_led_flags, code); 415 } 416 417 inline void 418 evdev_support_snd(struct evdev_dev *evdev, uint16_t code) 419 { 420 421 KASSERT(code < SND_CNT, ("invalid evdev snd property")); 422 bit_set(evdev->ev_snd_flags, code); 423 } 424 425 inline void 426 evdev_support_sw(struct evdev_dev *evdev, uint16_t code) 427 { 428 429 KASSERT(code < SW_CNT, ("invalid evdev sw property")); 430 bit_set(evdev->ev_sw_flags, code); 431 } 432 433 bool 434 evdev_event_supported(struct evdev_dev *evdev, uint16_t type) 435 { 436 437 KASSERT(type < EV_CNT, ("invalid evdev event property")); 438 return (bit_test(evdev->ev_type_flags, type)); 439 } 440 441 inline void 442 evdev_set_absinfo(struct evdev_dev *evdev, uint16_t axis, 443 struct input_absinfo *absinfo) 444 { 445 446 KASSERT(axis < ABS_CNT, ("invalid evdev abs property")); 447 448 if (axis == ABS_MT_SLOT && 449 (absinfo->maximum < 1 || absinfo->maximum >= MAX_MT_SLOTS)) 450 return; 451 452 if (evdev->ev_absinfo == NULL) 453 evdev->ev_absinfo = evdev_alloc_absinfo(); 454 455 if (axis == ABS_MT_SLOT) 456 evdev->ev_absinfo[ABS_MT_SLOT].maximum = absinfo->maximum; 457 else 458 memcpy(&evdev->ev_absinfo[axis], absinfo, 459 sizeof(struct input_absinfo)); 460 } 461 462 inline void 463 evdev_set_repeat_params(struct evdev_dev *evdev, uint16_t property, int value) 464 { 465 466 KASSERT(property < REP_CNT, ("invalid evdev repeat property")); 467 evdev->ev_rep[property] = value; 468 } 469 470 inline void 471 evdev_set_flag(struct evdev_dev *evdev, uint16_t flag) 472 { 473 474 KASSERT(flag < EVDEV_FLAG_CNT, ("invalid evdev flag property")); 475 bit_set(evdev->ev_flags, flag); 476 } 477 478 static int 479 evdev_check_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 480 int32_t value) 481 { 482 483 if (type >= EV_CNT) 484 return (EINVAL); 485 486 /* Allow SYN events implicitly */ 487 if (type != EV_SYN && !evdev_event_supported(evdev, type)) 488 return (EINVAL); 489 490 switch (type) { 491 case EV_SYN: 492 if (code >= SYN_CNT) 493 return (EINVAL); 494 break; 495 496 case EV_KEY: 497 if (code >= KEY_CNT) 498 return (EINVAL); 499 if (!bit_test(evdev->ev_key_flags, code)) 500 return (EINVAL); 501 break; 502 503 case EV_REL: 504 if (code >= REL_CNT) 505 return (EINVAL); 506 if (!bit_test(evdev->ev_rel_flags, code)) 507 return (EINVAL); 508 break; 509 510 case EV_ABS: 511 if (code >= ABS_CNT) 512 return (EINVAL); 513 if (!bit_test(evdev->ev_abs_flags, code)) 514 return (EINVAL); 515 if (code == ABS_MT_SLOT && 516 (value < 0 || value > MAXIMAL_MT_SLOT(evdev))) 517 return (EINVAL); 518 if (ABS_IS_MT(code) && evdev->ev_mt == NULL && 519 bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 520 return (EINVAL); 521 break; 522 523 case EV_MSC: 524 if (code >= MSC_CNT) 525 return (EINVAL); 526 if (!bit_test(evdev->ev_msc_flags, code)) 527 return (EINVAL); 528 break; 529 530 case EV_LED: 531 if (code >= LED_CNT) 532 return (EINVAL); 533 if (!bit_test(evdev->ev_led_flags, code)) 534 return (EINVAL); 535 break; 536 537 case EV_SND: 538 if (code >= SND_CNT) 539 return (EINVAL); 540 if (!bit_test(evdev->ev_snd_flags, code)) 541 return (EINVAL); 542 break; 543 544 case EV_SW: 545 if (code >= SW_CNT) 546 return (EINVAL); 547 if (!bit_test(evdev->ev_sw_flags, code)) 548 return (EINVAL); 549 break; 550 551 case EV_REP: 552 if (code >= REP_CNT) 553 return (EINVAL); 554 break; 555 556 default: 557 return (EINVAL); 558 } 559 560 return (0); 561 } 562 563 static void 564 evdev_modify_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 565 int32_t *value) 566 { 567 568 EVDEV_LOCK_ASSERT(evdev); 569 570 switch (type) { 571 case EV_KEY: 572 if (!evdev_event_supported(evdev, EV_REP)) 573 break; 574 575 if (!bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 576 /* Detect driver key repeats. */ 577 if (bit_test(evdev->ev_key_states, code) && 578 *value == KEY_EVENT_DOWN) 579 *value = KEY_EVENT_REPEAT; 580 } else { 581 /* Start/stop callout for evdev repeats */ 582 if (bit_test(evdev->ev_key_states, code) == !*value) { 583 if (*value == KEY_EVENT_DOWN) 584 evdev_start_repeat(evdev, code); 585 else 586 evdev_stop_repeat(evdev); 587 } 588 } 589 break; 590 591 case EV_ABS: 592 /* TBD: implement fuzz */ 593 break; 594 } 595 } 596 597 static enum evdev_sparse_result 598 evdev_sparse_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 599 int32_t value) 600 { 601 int32_t last_mt_slot; 602 603 EVDEV_LOCK_ASSERT(evdev); 604 605 /* 606 * For certain event types, update device state bits 607 * and convert level reporting to edge reporting 608 */ 609 switch (type) { 610 case EV_KEY: 611 switch (value) { 612 case KEY_EVENT_UP: 613 case KEY_EVENT_DOWN: 614 if (bit_test(evdev->ev_key_states, code) == value) 615 return (EV_SKIP_EVENT); 616 bit_change(evdev->ev_key_states, code, value); 617 break; 618 619 case KEY_EVENT_REPEAT: 620 if (bit_test(evdev->ev_key_states, code) == 0 || 621 !evdev_event_supported(evdev, EV_REP)) 622 return (EV_SKIP_EVENT); 623 break; 624 625 default: 626 return (EV_SKIP_EVENT); 627 } 628 break; 629 630 case EV_LED: 631 if (bit_test(evdev->ev_led_states, code) == value) 632 return (EV_SKIP_EVENT); 633 bit_change(evdev->ev_led_states, code, value); 634 break; 635 636 case EV_SND: 637 if (bit_test(evdev->ev_snd_states, code) == value) 638 return (EV_SKIP_EVENT); 639 bit_change(evdev->ev_snd_states, code, value); 640 break; 641 642 case EV_SW: 643 if (bit_test(evdev->ev_sw_states, code) == value) 644 return (EV_SKIP_EVENT); 645 bit_change(evdev->ev_sw_states, code, value); 646 break; 647 648 case EV_REP: 649 if (evdev->ev_rep[code] == value) 650 return (EV_SKIP_EVENT); 651 evdev_set_repeat_params(evdev, code, value); 652 break; 653 654 case EV_REL: 655 if (value == 0) 656 return (EV_SKIP_EVENT); 657 break; 658 659 /* For EV_ABS, save last value in absinfo and ev_mt_states */ 660 case EV_ABS: 661 switch (code) { 662 case ABS_MT_SLOT: 663 /* Postpone ABS_MT_SLOT till next event */ 664 evdev_set_last_mt_slot(evdev, value); 665 return (EV_SKIP_EVENT); 666 667 case ABS_MT_FIRST ... ABS_MT_LAST: 668 /* Pass MT protocol type A events as is */ 669 if (!bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 670 break; 671 /* Don`t repeat MT protocol type B events */ 672 last_mt_slot = evdev_get_last_mt_slot(evdev); 673 if (evdev_get_mt_value(evdev, last_mt_slot, code) 674 == value) 675 return (EV_SKIP_EVENT); 676 evdev_set_mt_value(evdev, last_mt_slot, code, value); 677 if (last_mt_slot != CURRENT_MT_SLOT(evdev)) { 678 CURRENT_MT_SLOT(evdev) = last_mt_slot; 679 evdev->ev_report_opened = true; 680 return (EV_REPORT_MT_SLOT); 681 } 682 break; 683 684 default: 685 if (evdev->ev_absinfo[code].value == value) 686 return (EV_SKIP_EVENT); 687 evdev->ev_absinfo[code].value = value; 688 } 689 break; 690 691 case EV_SYN: 692 if (code == SYN_REPORT) { 693 /* Count empty reports as well as non empty */ 694 evdev->ev_report_count++; 695 /* Skip empty reports */ 696 if (!evdev->ev_report_opened) 697 return (EV_SKIP_EVENT); 698 evdev->ev_report_opened = false; 699 return (EV_REPORT_EVENT); 700 } 701 break; 702 } 703 704 evdev->ev_report_opened = true; 705 return (EV_REPORT_EVENT); 706 } 707 708 static void 709 evdev_propagate_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 710 int32_t value) 711 { 712 struct evdev_client *client; 713 714 debugf(evdev, "%s pushed event %d/%d/%d", 715 evdev->ev_shortname, type, code, value); 716 717 EVDEV_LOCK_ASSERT(evdev); 718 719 /* Propagate event through all clients */ 720 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 721 if (evdev->ev_grabber != NULL && evdev->ev_grabber != client) 722 continue; 723 724 EVDEV_CLIENT_LOCKQ(client); 725 evdev_client_push(client, type, code, value); 726 if (type == EV_SYN && code == SYN_REPORT) 727 evdev_notify_event(client); 728 EVDEV_CLIENT_UNLOCKQ(client); 729 } 730 731 evdev->ev_event_count++; 732 } 733 734 void 735 evdev_send_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 736 int32_t value) 737 { 738 enum evdev_sparse_result sparse; 739 740 EVDEV_LOCK_ASSERT(evdev); 741 742 sparse = evdev_sparse_event(evdev, type, code, value); 743 switch (sparse) { 744 case EV_REPORT_MT_SLOT: 745 /* report postponed ABS_MT_SLOT */ 746 evdev_propagate_event(evdev, EV_ABS, ABS_MT_SLOT, 747 CURRENT_MT_SLOT(evdev)); 748 /* FALLTHROUGH */ 749 case EV_REPORT_EVENT: 750 evdev_propagate_event(evdev, type, code, value); 751 /* FALLTHROUGH */ 752 case EV_SKIP_EVENT: 753 break; 754 } 755 } 756 757 int 758 evdev_push_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 759 int32_t value) 760 { 761 762 if (evdev_check_event(evdev, type, code, value) != 0) 763 return (EINVAL); 764 765 EVDEV_ENTER(evdev); 766 767 evdev_modify_event(evdev, type, code, &value); 768 if (type == EV_SYN && code == SYN_REPORT && 769 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_AUTOREL)) 770 evdev_send_mt_autorel(evdev); 771 if (type == EV_SYN && code == SYN_REPORT && evdev->ev_report_opened && 772 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_STCOMPAT)) 773 evdev_send_mt_compat(evdev); 774 evdev_send_event(evdev, type, code, value); 775 776 EVDEV_EXIT(evdev); 777 778 return (0); 779 } 780 781 int 782 evdev_inject_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 783 int32_t value) 784 { 785 int ret = 0; 786 787 switch (type) { 788 case EV_REP: 789 /* evdev repeats should not be processed by hardware driver */ 790 if (bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 791 goto push; 792 /* FALLTHROUGH */ 793 case EV_LED: 794 case EV_MSC: 795 case EV_SND: 796 case EV_FF: 797 if (evdev->ev_methods != NULL && 798 evdev->ev_methods->ev_event != NULL) 799 evdev->ev_methods->ev_event(evdev, evdev->ev_softc, 800 type, code, value); 801 /* 802 * Leds and driver repeats should be reported in ev_event 803 * method body to interoperate with kbdmux states and rates 804 * propagation so both ways (ioctl and evdev) of changing it 805 * will produce only one evdev event report to client. 806 */ 807 if (type == EV_LED || type == EV_REP) 808 break; 809 /* FALLTHROUGH */ 810 case EV_SYN: 811 case EV_KEY: 812 case EV_REL: 813 case EV_ABS: 814 case EV_SW: 815 push: 816 ret = evdev_push_event(evdev, type, code, value); 817 break; 818 819 default: 820 ret = EINVAL; 821 } 822 823 return (ret); 824 } 825 826 int 827 evdev_register_client(struct evdev_dev *evdev, struct evdev_client *client) 828 { 829 int ret = 0; 830 831 debugf(evdev, "adding new client for device %s", evdev->ev_shortname); 832 833 EVDEV_LOCK_ASSERT(evdev); 834 835 if (LIST_EMPTY(&evdev->ev_clients) && evdev->ev_methods != NULL && 836 evdev->ev_methods->ev_open != NULL) { 837 debugf(evdev, "calling ev_open() on device %s", 838 evdev->ev_shortname); 839 ret = evdev->ev_methods->ev_open(evdev, evdev->ev_softc); 840 } 841 if (ret == 0) 842 LIST_INSERT_HEAD(&evdev->ev_clients, client, ec_link); 843 return (ret); 844 } 845 846 void 847 evdev_dispose_client(struct evdev_dev *evdev, struct evdev_client *client) 848 { 849 debugf(evdev, "removing client for device %s", evdev->ev_shortname); 850 851 EVDEV_LOCK_ASSERT(evdev); 852 853 LIST_REMOVE(client, ec_link); 854 if (LIST_EMPTY(&evdev->ev_clients)) { 855 if (evdev->ev_methods != NULL && 856 evdev->ev_methods->ev_close != NULL) 857 evdev->ev_methods->ev_close(evdev, evdev->ev_softc); 858 if (evdev_event_supported(evdev, EV_REP) && 859 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 860 evdev_stop_repeat(evdev); 861 } 862 evdev_release_client(evdev, client); 863 } 864 865 int 866 evdev_grab_client(struct evdev_dev *evdev, struct evdev_client *client) 867 { 868 869 EVDEV_LOCK_ASSERT(evdev); 870 871 if (evdev->ev_grabber != NULL) 872 return (EBUSY); 873 874 evdev->ev_grabber = client; 875 876 return (0); 877 } 878 879 int 880 evdev_release_client(struct evdev_dev *evdev, struct evdev_client *client) 881 { 882 883 EVDEV_LOCK_ASSERT(evdev); 884 885 if (evdev->ev_grabber != client) 886 return (EINVAL); 887 888 evdev->ev_grabber = NULL; 889 890 return (0); 891 } 892 893 static void 894 evdev_repeat_callout(void *arg) 895 { 896 struct evdev_dev *evdev = (struct evdev_dev *)arg; 897 898 evdev_send_event(evdev, EV_KEY, evdev->ev_rep_key, KEY_EVENT_REPEAT); 899 evdev_send_event(evdev, EV_SYN, SYN_REPORT, 1); 900 901 if (evdev->ev_rep[REP_PERIOD]) 902 callout_reset(&evdev->ev_rep_callout, 903 evdev->ev_rep[REP_PERIOD] * hz / 1000, 904 evdev_repeat_callout, evdev); 905 else 906 evdev->ev_rep_key = KEY_RESERVED; 907 } 908 909 static void 910 evdev_start_repeat(struct evdev_dev *evdev, uint16_t key) 911 { 912 913 EVDEV_LOCK_ASSERT(evdev); 914 915 if (evdev->ev_rep[REP_DELAY]) { 916 evdev->ev_rep_key = key; 917 callout_reset(&evdev->ev_rep_callout, 918 evdev->ev_rep[REP_DELAY] * hz / 1000, 919 evdev_repeat_callout, evdev); 920 } 921 } 922 923 static void 924 evdev_stop_repeat(struct evdev_dev *evdev) 925 { 926 927 EVDEV_LOCK_ASSERT(evdev); 928 929 if (evdev->ev_rep_key != KEY_RESERVED) { 930 callout_stop(&evdev->ev_rep_callout); 931 evdev->ev_rep_key = KEY_RESERVED; 932 } 933 } 934 935 MODULE_VERSION(evdev, 1); 936