1 /* 2 * HID driver for multitouch panels 3 * 4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 7 * Copyright (c) 2012-2013 Red Hat, Inc 8 * 9 * This code is partly based on hid-egalax.c: 10 * 11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 13 * Copyright (c) 2010 Canonical, Ltd. 14 * 15 * This code is partly based on hid-3m-pct.c: 16 * 17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 19 * Copyright (c) 2010 Canonical, Ltd. 20 * 21 */ 22 23 /* 24 * This program is free software; you can redistribute it and/or modify it 25 * under the terms of the GNU General Public License as published by the Free 26 * Software Foundation; either version 2 of the License, or (at your option) 27 * any later version. 28 */ 29 30 /* 31 * This driver is regularly tested thanks to the test suite in hid-tools[1]. 32 * Please run these regression tests before patching this module so that 33 * your patch won't break existing known devices. 34 * 35 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools 36 */ 37 38 #include <linux/device.h> 39 #include <linux/hid.h> 40 #include <linux/module.h> 41 #include <linux/slab.h> 42 #include <linux/input/mt.h> 43 #include <linux/jiffies.h> 44 #include <linux/string.h> 45 #include <linux/timer.h> 46 47 48 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 49 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 50 MODULE_DESCRIPTION("HID multitouch panels"); 51 MODULE_LICENSE("GPL"); 52 53 #include "hid-ids.h" 54 55 /* quirks to control the device */ 56 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 57 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 58 #define MT_QUIRK_CYPRESS BIT(2) 59 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 60 #define MT_QUIRK_ALWAYS_VALID BIT(4) 61 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 62 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 63 #define MT_QUIRK_CONFIDENCE BIT(7) 64 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 65 #define MT_QUIRK_NO_AREA BIT(9) 66 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 67 #define MT_QUIRK_HOVERING BIT(11) 68 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 69 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 70 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 71 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 72 #define MT_QUIRK_STICKY_FINGERS BIT(16) 73 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 74 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 75 76 #define MT_INPUTMODE_TOUCHSCREEN 0x02 77 #define MT_INPUTMODE_TOUCHPAD 0x03 78 79 #define MT_BUTTONTYPE_CLICKPAD 0 80 81 enum latency_mode { 82 HID_LATENCY_NORMAL = 0, 83 HID_LATENCY_HIGH = 1, 84 }; 85 86 #define MT_IO_FLAGS_RUNNING 0 87 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 88 #define MT_IO_FLAGS_PENDING_SLOTS 2 89 90 static const bool mtrue = true; /* default for true */ 91 static const bool mfalse; /* default for false */ 92 static const __s32 mzero; /* default for 0 */ 93 94 #define DEFAULT_TRUE ((void *)&mtrue) 95 #define DEFAULT_FALSE ((void *)&mfalse) 96 #define DEFAULT_ZERO ((void *)&mzero) 97 98 struct mt_usages { 99 struct list_head list; 100 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 101 __s32 *contactid; /* the device ContactID assigned to this slot */ 102 bool *tip_state; /* is the touch valid? */ 103 bool *inrange_state; /* is the finger in proximity of the sensor? */ 104 bool *confidence_state; /* is the touch made by a finger? */ 105 }; 106 107 struct mt_application { 108 struct list_head list; 109 unsigned int application; 110 struct list_head mt_usages; /* mt usages list */ 111 112 __s32 quirks; 113 114 __s32 *scantime; /* scantime reported */ 115 __s32 scantime_logical_max; /* max value for raw scantime */ 116 117 __s32 *raw_cc; /* contact count in the report */ 118 int left_button_state; /* left button state */ 119 unsigned int mt_flags; /* flags to pass to input-mt */ 120 121 unsigned long *pending_palm_slots; /* slots where we reported palm 122 * and need to release */ 123 124 __u8 num_received; /* how many contacts we received */ 125 __u8 num_expected; /* expected last contact index */ 126 __u8 buttons_count; /* number of physical buttons per touchpad */ 127 __u8 touches_by_report; /* how many touches are present in one report: 128 * 1 means we should use a serial protocol 129 * > 1 means hybrid (multitouch) protocol 130 */ 131 132 __s32 dev_time; /* the scan time provided by the device */ 133 unsigned long jiffies; /* the frame's jiffies */ 134 int timestamp; /* the timestamp to be sent */ 135 int prev_scantime; /* scantime reported previously */ 136 137 bool have_contact_count; 138 }; 139 140 struct mt_class { 141 __s32 name; /* MT_CLS */ 142 __s32 quirks; 143 __s32 sn_move; /* Signal/noise ratio for move events */ 144 __s32 sn_width; /* Signal/noise ratio for width events */ 145 __s32 sn_height; /* Signal/noise ratio for height events */ 146 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 147 __u8 maxcontacts; 148 bool is_indirect; /* true for touchpads */ 149 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 150 }; 151 152 struct mt_report_data { 153 struct list_head list; 154 struct hid_report *report; 155 struct mt_application *application; 156 bool is_mt_collection; 157 }; 158 159 struct mt_device { 160 struct mt_class mtclass; /* our mt device class */ 161 struct timer_list release_timer; /* to release sticky fingers */ 162 struct hid_device *hdev; /* hid_device we're attached to */ 163 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 164 __u8 inputmode_value; /* InputMode HID feature value */ 165 __u8 maxcontacts; 166 bool is_buttonpad; /* is this device a button pad? */ 167 bool serial_maybe; /* need to check for serial protocol */ 168 169 struct list_head applications; 170 struct list_head reports; 171 }; 172 173 static void mt_post_parse_default_settings(struct mt_device *td, 174 struct mt_application *app); 175 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 176 177 /* classes of device behavior */ 178 #define MT_CLS_DEFAULT 0x0001 179 180 #define MT_CLS_SERIAL 0x0002 181 #define MT_CLS_CONFIDENCE 0x0003 182 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 183 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 184 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 185 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 186 /* reserved 0x0008 */ 187 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 188 #define MT_CLS_NSMU 0x000a 189 /* reserved 0x0010 */ 190 /* reserved 0x0011 */ 191 #define MT_CLS_WIN_8 0x0012 192 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 193 #define MT_CLS_WIN_8_DUAL 0x0014 194 195 /* vendor specific classes */ 196 #define MT_CLS_3M 0x0101 197 /* reserved 0x0102 */ 198 #define MT_CLS_EGALAX 0x0103 199 #define MT_CLS_EGALAX_SERIAL 0x0104 200 #define MT_CLS_TOPSEED 0x0105 201 #define MT_CLS_PANASONIC 0x0106 202 #define MT_CLS_FLATFROG 0x0107 203 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 204 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 205 #define MT_CLS_LG 0x010a 206 #define MT_CLS_ASUS 0x010b 207 #define MT_CLS_VTL 0x0110 208 #define MT_CLS_GOOGLE 0x0111 209 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 210 211 #define MT_DEFAULT_MAXCONTACT 10 212 #define MT_MAX_MAXCONTACT 250 213 214 /* 215 * Resync device and local timestamps after that many microseconds without 216 * receiving data. 217 */ 218 #define MAX_TIMESTAMP_INTERVAL 1000000 219 220 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 221 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 222 223 /* 224 * these device-dependent functions determine what slot corresponds 225 * to a valid contact that was just read. 226 */ 227 228 static int cypress_compute_slot(struct mt_application *application, 229 struct mt_usages *slot) 230 { 231 if (*slot->contactid != 0 || application->num_received == 0) 232 return *slot->contactid; 233 else 234 return -1; 235 } 236 237 static const struct mt_class mt_classes[] = { 238 { .name = MT_CLS_DEFAULT, 239 .quirks = MT_QUIRK_ALWAYS_VALID | 240 MT_QUIRK_CONTACT_CNT_ACCURATE }, 241 { .name = MT_CLS_NSMU, 242 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 243 { .name = MT_CLS_SERIAL, 244 .quirks = MT_QUIRK_ALWAYS_VALID}, 245 { .name = MT_CLS_CONFIDENCE, 246 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 247 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 248 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 249 MT_QUIRK_SLOT_IS_CONTACTID }, 250 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 251 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 252 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 253 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 254 .quirks = MT_QUIRK_VALID_IS_INRANGE | 255 MT_QUIRK_SLOT_IS_CONTACTID, 256 .maxcontacts = 2 }, 257 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 258 .quirks = MT_QUIRK_VALID_IS_INRANGE | 259 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 260 .maxcontacts = 2 }, 261 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 262 .quirks = MT_QUIRK_VALID_IS_INRANGE | 263 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 264 { .name = MT_CLS_WIN_8, 265 .quirks = MT_QUIRK_ALWAYS_VALID | 266 MT_QUIRK_IGNORE_DUPLICATES | 267 MT_QUIRK_HOVERING | 268 MT_QUIRK_CONTACT_CNT_ACCURATE | 269 MT_QUIRK_STICKY_FINGERS | 270 MT_QUIRK_WIN8_PTP_BUTTONS }, 271 { .name = MT_CLS_EXPORT_ALL_INPUTS, 272 .quirks = MT_QUIRK_ALWAYS_VALID | 273 MT_QUIRK_CONTACT_CNT_ACCURATE, 274 .export_all_inputs = true }, 275 { .name = MT_CLS_WIN_8_DUAL, 276 .quirks = MT_QUIRK_ALWAYS_VALID | 277 MT_QUIRK_IGNORE_DUPLICATES | 278 MT_QUIRK_HOVERING | 279 MT_QUIRK_CONTACT_CNT_ACCURATE | 280 MT_QUIRK_WIN8_PTP_BUTTONS, 281 .export_all_inputs = true }, 282 283 /* 284 * vendor specific classes 285 */ 286 { .name = MT_CLS_3M, 287 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 288 MT_QUIRK_SLOT_IS_CONTACTID | 289 MT_QUIRK_TOUCH_SIZE_SCALING, 290 .sn_move = 2048, 291 .sn_width = 128, 292 .sn_height = 128, 293 .maxcontacts = 60, 294 }, 295 { .name = MT_CLS_EGALAX, 296 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 297 MT_QUIRK_VALID_IS_INRANGE, 298 .sn_move = 4096, 299 .sn_pressure = 32, 300 }, 301 { .name = MT_CLS_EGALAX_SERIAL, 302 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 303 MT_QUIRK_ALWAYS_VALID, 304 .sn_move = 4096, 305 .sn_pressure = 32, 306 }, 307 { .name = MT_CLS_TOPSEED, 308 .quirks = MT_QUIRK_ALWAYS_VALID, 309 .is_indirect = true, 310 .maxcontacts = 2, 311 }, 312 { .name = MT_CLS_PANASONIC, 313 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 314 .maxcontacts = 4 }, 315 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 316 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 317 MT_QUIRK_VALID_IS_INRANGE | 318 MT_QUIRK_SLOT_IS_CONTACTID, 319 .maxcontacts = 2 320 }, 321 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 322 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 323 MT_QUIRK_SLOT_IS_CONTACTID 324 }, 325 326 { .name = MT_CLS_FLATFROG, 327 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 328 MT_QUIRK_NO_AREA, 329 .sn_move = 2048, 330 .maxcontacts = 40, 331 }, 332 { .name = MT_CLS_LG, 333 .quirks = MT_QUIRK_ALWAYS_VALID | 334 MT_QUIRK_FIX_CONST_CONTACT_ID | 335 MT_QUIRK_IGNORE_DUPLICATES | 336 MT_QUIRK_HOVERING | 337 MT_QUIRK_CONTACT_CNT_ACCURATE }, 338 { .name = MT_CLS_ASUS, 339 .quirks = MT_QUIRK_ALWAYS_VALID | 340 MT_QUIRK_CONTACT_CNT_ACCURATE | 341 MT_QUIRK_ASUS_CUSTOM_UP }, 342 { .name = MT_CLS_VTL, 343 .quirks = MT_QUIRK_ALWAYS_VALID | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_FORCE_GET_FEATURE, 346 }, 347 { .name = MT_CLS_GOOGLE, 348 .quirks = MT_QUIRK_ALWAYS_VALID | 349 MT_QUIRK_CONTACT_CNT_ACCURATE | 350 MT_QUIRK_SLOT_IS_CONTACTID | 351 MT_QUIRK_HOVERING 352 }, 353 { .name = MT_CLS_RAZER_BLADE_STEALTH, 354 .quirks = MT_QUIRK_ALWAYS_VALID | 355 MT_QUIRK_IGNORE_DUPLICATES | 356 MT_QUIRK_HOVERING | 357 MT_QUIRK_CONTACT_CNT_ACCURATE | 358 MT_QUIRK_WIN8_PTP_BUTTONS, 359 }, 360 { } 361 }; 362 363 static ssize_t mt_show_quirks(struct device *dev, 364 struct device_attribute *attr, 365 char *buf) 366 { 367 struct hid_device *hdev = to_hid_device(dev); 368 struct mt_device *td = hid_get_drvdata(hdev); 369 370 return sprintf(buf, "%u\n", td->mtclass.quirks); 371 } 372 373 static ssize_t mt_set_quirks(struct device *dev, 374 struct device_attribute *attr, 375 const char *buf, size_t count) 376 { 377 struct hid_device *hdev = to_hid_device(dev); 378 struct mt_device *td = hid_get_drvdata(hdev); 379 struct mt_application *application; 380 381 unsigned long val; 382 383 if (kstrtoul(buf, 0, &val)) 384 return -EINVAL; 385 386 td->mtclass.quirks = val; 387 388 list_for_each_entry(application, &td->applications, list) { 389 application->quirks = val; 390 if (!application->have_contact_count) 391 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 392 } 393 394 return count; 395 } 396 397 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 398 399 static struct attribute *sysfs_attrs[] = { 400 &dev_attr_quirks.attr, 401 NULL 402 }; 403 404 static const struct attribute_group mt_attribute_group = { 405 .attrs = sysfs_attrs 406 }; 407 408 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 409 { 410 int ret; 411 u32 size = hid_report_len(report); 412 u8 *buf; 413 414 /* 415 * Do not fetch the feature report if the device has been explicitly 416 * marked as non-capable. 417 */ 418 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 419 return; 420 421 buf = hid_alloc_report_buf(report, GFP_KERNEL); 422 if (!buf) 423 return; 424 425 ret = hid_hw_raw_request(hdev, report->id, buf, size, 426 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 427 if (ret < 0) { 428 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 429 report->id); 430 } else { 431 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 432 size, 0); 433 if (ret) 434 dev_warn(&hdev->dev, "failed to report feature\n"); 435 } 436 437 kfree(buf); 438 } 439 440 static void mt_feature_mapping(struct hid_device *hdev, 441 struct hid_field *field, struct hid_usage *usage) 442 { 443 struct mt_device *td = hid_get_drvdata(hdev); 444 445 switch (usage->hid) { 446 case HID_DG_CONTACTMAX: 447 mt_get_feature(hdev, field->report); 448 449 td->maxcontacts = field->value[0]; 450 if (!td->maxcontacts && 451 field->logical_maximum <= MT_MAX_MAXCONTACT) 452 td->maxcontacts = field->logical_maximum; 453 if (td->mtclass.maxcontacts) 454 /* check if the maxcontacts is given by the class */ 455 td->maxcontacts = td->mtclass.maxcontacts; 456 457 break; 458 case HID_DG_BUTTONTYPE: 459 if (usage->usage_index >= field->report_count) { 460 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 461 break; 462 } 463 464 mt_get_feature(hdev, field->report); 465 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 466 td->is_buttonpad = true; 467 468 break; 469 case 0xff0000c5: 470 /* Retrieve the Win8 blob once to enable some devices */ 471 if (usage->usage_index == 0) 472 mt_get_feature(hdev, field->report); 473 break; 474 } 475 } 476 477 static void set_abs(struct input_dev *input, unsigned int code, 478 struct hid_field *field, int snratio) 479 { 480 int fmin = field->logical_minimum; 481 int fmax = field->logical_maximum; 482 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 483 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 484 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 485 } 486 487 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 488 struct mt_application *application) 489 { 490 struct mt_usages *usage; 491 492 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 493 if (!usage) 494 return NULL; 495 496 /* set some defaults so we do not need to check for null pointers */ 497 usage->x = DEFAULT_ZERO; 498 usage->y = DEFAULT_ZERO; 499 usage->cx = DEFAULT_ZERO; 500 usage->cy = DEFAULT_ZERO; 501 usage->p = DEFAULT_ZERO; 502 usage->w = DEFAULT_ZERO; 503 usage->h = DEFAULT_ZERO; 504 usage->a = DEFAULT_ZERO; 505 usage->contactid = DEFAULT_ZERO; 506 usage->tip_state = DEFAULT_FALSE; 507 usage->inrange_state = DEFAULT_FALSE; 508 usage->confidence_state = DEFAULT_TRUE; 509 510 list_add_tail(&usage->list, &application->mt_usages); 511 512 return usage; 513 } 514 515 static struct mt_application *mt_allocate_application(struct mt_device *td, 516 unsigned int application) 517 { 518 struct mt_application *mt_application; 519 520 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 521 GFP_KERNEL); 522 if (!mt_application) 523 return NULL; 524 525 mt_application->application = application; 526 INIT_LIST_HEAD(&mt_application->mt_usages); 527 528 if (application == HID_DG_TOUCHSCREEN) 529 mt_application->mt_flags |= INPUT_MT_DIRECT; 530 531 /* 532 * Model touchscreens providing buttons as touchpads. 533 */ 534 if (application == HID_DG_TOUCHPAD) { 535 mt_application->mt_flags |= INPUT_MT_POINTER; 536 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 537 } 538 539 mt_application->scantime = DEFAULT_ZERO; 540 mt_application->raw_cc = DEFAULT_ZERO; 541 mt_application->quirks = td->mtclass.quirks; 542 543 list_add_tail(&mt_application->list, &td->applications); 544 545 return mt_application; 546 } 547 548 static struct mt_application *mt_find_application(struct mt_device *td, 549 unsigned int application) 550 { 551 struct mt_application *tmp, *mt_application = NULL; 552 553 list_for_each_entry(tmp, &td->applications, list) { 554 if (application == tmp->application) { 555 mt_application = tmp; 556 break; 557 } 558 } 559 560 if (!mt_application) 561 mt_application = mt_allocate_application(td, application); 562 563 return mt_application; 564 } 565 566 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 567 struct hid_report *report) 568 { 569 struct mt_report_data *rdata; 570 struct hid_field *field; 571 int r, n; 572 573 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 574 if (!rdata) 575 return NULL; 576 577 rdata->report = report; 578 rdata->application = mt_find_application(td, report->application); 579 580 if (!rdata->application) { 581 devm_kfree(&td->hdev->dev, rdata); 582 return NULL; 583 } 584 585 for (r = 0; r < report->maxfield; r++) { 586 field = report->field[r]; 587 588 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 589 continue; 590 591 for (n = 0; n < field->report_count; n++) { 592 if (field->usage[n].hid == HID_DG_CONTACTID) 593 rdata->is_mt_collection = true; 594 } 595 } 596 597 list_add_tail(&rdata->list, &td->reports); 598 599 return rdata; 600 } 601 602 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 603 struct hid_report *report) 604 { 605 struct mt_report_data *tmp, *rdata = NULL; 606 607 list_for_each_entry(tmp, &td->reports, list) { 608 if (report == tmp->report) { 609 rdata = tmp; 610 break; 611 } 612 } 613 614 if (!rdata) 615 rdata = mt_allocate_report_data(td, report); 616 617 return rdata; 618 } 619 620 static void mt_store_field(struct hid_device *hdev, 621 struct mt_application *application, 622 __s32 *value, 623 size_t offset) 624 { 625 struct mt_usages *usage; 626 __s32 **target; 627 628 if (list_empty(&application->mt_usages)) 629 usage = mt_allocate_usage(hdev, application); 630 else 631 usage = list_last_entry(&application->mt_usages, 632 struct mt_usages, 633 list); 634 635 if (!usage) 636 return; 637 638 target = (__s32 **)((char *)usage + offset); 639 640 /* the value has already been filled, create a new slot */ 641 if (*target != DEFAULT_TRUE && 642 *target != DEFAULT_FALSE && 643 *target != DEFAULT_ZERO) { 644 usage = mt_allocate_usage(hdev, application); 645 if (!usage) 646 return; 647 648 target = (__s32 **)((char *)usage + offset); 649 } 650 651 *target = value; 652 } 653 654 #define MT_STORE_FIELD(__name) \ 655 mt_store_field(hdev, app, \ 656 &field->value[usage->usage_index], \ 657 offsetof(struct mt_usages, __name)) 658 659 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 660 struct hid_field *field, struct hid_usage *usage, 661 unsigned long **bit, int *max, struct mt_application *app) 662 { 663 struct mt_device *td = hid_get_drvdata(hdev); 664 struct mt_class *cls = &td->mtclass; 665 int code; 666 struct hid_usage *prev_usage = NULL; 667 668 /* 669 * Model touchscreens providing buttons as touchpads. 670 */ 671 if (field->application == HID_DG_TOUCHSCREEN && 672 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 673 app->mt_flags |= INPUT_MT_POINTER; 674 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 675 } 676 677 /* count the buttons on touchpads */ 678 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 679 app->buttons_count++; 680 681 if (usage->usage_index) 682 prev_usage = &field->usage[usage->usage_index - 1]; 683 684 switch (usage->hid & HID_USAGE_PAGE) { 685 686 case HID_UP_GENDESK: 687 switch (usage->hid) { 688 case HID_GD_X: 689 if (prev_usage && (prev_usage->hid == usage->hid)) { 690 code = ABS_MT_TOOL_X; 691 MT_STORE_FIELD(cx); 692 } else { 693 code = ABS_MT_POSITION_X; 694 MT_STORE_FIELD(x); 695 } 696 697 set_abs(hi->input, code, field, cls->sn_move); 698 699 /* 700 * A system multi-axis that exports X and Y has a high 701 * chance of being used directly on a surface 702 */ 703 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 704 __set_bit(INPUT_PROP_DIRECT, 705 hi->input->propbit); 706 input_set_abs_params(hi->input, 707 ABS_MT_TOOL_TYPE, 708 MT_TOOL_DIAL, 709 MT_TOOL_DIAL, 0, 0); 710 } 711 712 return 1; 713 case HID_GD_Y: 714 if (prev_usage && (prev_usage->hid == usage->hid)) { 715 code = ABS_MT_TOOL_Y; 716 MT_STORE_FIELD(cy); 717 } else { 718 code = ABS_MT_POSITION_Y; 719 MT_STORE_FIELD(y); 720 } 721 722 set_abs(hi->input, code, field, cls->sn_move); 723 724 return 1; 725 } 726 return 0; 727 728 case HID_UP_DIGITIZER: 729 switch (usage->hid) { 730 case HID_DG_INRANGE: 731 if (app->quirks & MT_QUIRK_HOVERING) { 732 input_set_abs_params(hi->input, 733 ABS_MT_DISTANCE, 0, 1, 0, 0); 734 } 735 MT_STORE_FIELD(inrange_state); 736 return 1; 737 case HID_DG_CONFIDENCE: 738 if ((cls->name == MT_CLS_WIN_8 || 739 cls->name == MT_CLS_WIN_8_DUAL) && 740 (field->application == HID_DG_TOUCHPAD || 741 field->application == HID_DG_TOUCHSCREEN)) 742 app->quirks |= MT_QUIRK_CONFIDENCE; 743 744 if (app->quirks & MT_QUIRK_CONFIDENCE) 745 input_set_abs_params(hi->input, 746 ABS_MT_TOOL_TYPE, 747 MT_TOOL_FINGER, 748 MT_TOOL_PALM, 0, 0); 749 750 MT_STORE_FIELD(confidence_state); 751 return 1; 752 case HID_DG_TIPSWITCH: 753 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 754 input_set_capability(hi->input, 755 EV_KEY, BTN_TOUCH); 756 MT_STORE_FIELD(tip_state); 757 return 1; 758 case HID_DG_CONTACTID: 759 MT_STORE_FIELD(contactid); 760 app->touches_by_report++; 761 return 1; 762 case HID_DG_WIDTH: 763 if (!(app->quirks & MT_QUIRK_NO_AREA)) 764 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 765 cls->sn_width); 766 MT_STORE_FIELD(w); 767 return 1; 768 case HID_DG_HEIGHT: 769 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 770 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 771 cls->sn_height); 772 773 /* 774 * Only set ABS_MT_ORIENTATION if it is not 775 * already set by the HID_DG_AZIMUTH usage. 776 */ 777 if (!test_bit(ABS_MT_ORIENTATION, 778 hi->input->absbit)) 779 input_set_abs_params(hi->input, 780 ABS_MT_ORIENTATION, 0, 1, 0, 0); 781 } 782 MT_STORE_FIELD(h); 783 return 1; 784 case HID_DG_TIPPRESSURE: 785 set_abs(hi->input, ABS_MT_PRESSURE, field, 786 cls->sn_pressure); 787 MT_STORE_FIELD(p); 788 return 1; 789 case HID_DG_SCANTIME: 790 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 791 app->scantime = &field->value[usage->usage_index]; 792 app->scantime_logical_max = field->logical_maximum; 793 return 1; 794 case HID_DG_CONTACTCOUNT: 795 app->have_contact_count = true; 796 app->raw_cc = &field->value[usage->usage_index]; 797 return 1; 798 case HID_DG_AZIMUTH: 799 /* 800 * Azimuth has the range of [0, MAX) representing a full 801 * revolution. Set ABS_MT_ORIENTATION to a quarter of 802 * MAX according the definition of ABS_MT_ORIENTATION 803 */ 804 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 805 -field->logical_maximum / 4, 806 field->logical_maximum / 4, 807 cls->sn_move ? 808 field->logical_maximum / cls->sn_move : 0, 0); 809 MT_STORE_FIELD(a); 810 return 1; 811 case HID_DG_CONTACTMAX: 812 /* contact max are global to the report */ 813 return -1; 814 case HID_DG_TOUCH: 815 /* Legacy devices use TIPSWITCH and not TOUCH. 816 * Let's just ignore this field. */ 817 return -1; 818 } 819 /* let hid-input decide for the others */ 820 return 0; 821 822 case HID_UP_BUTTON: 823 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 824 /* 825 * MS PTP spec says that external buttons left and right have 826 * usages 2 and 3. 827 */ 828 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 829 field->application == HID_DG_TOUCHPAD && 830 (usage->hid & HID_USAGE) > 1) 831 code--; 832 833 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 834 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 835 836 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 837 input_set_capability(hi->input, EV_KEY, code); 838 return 1; 839 840 case 0xff000000: 841 /* we do not want to map these: no input-oriented meaning */ 842 return -1; 843 } 844 845 return 0; 846 } 847 848 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 849 struct mt_usages *slot, 850 struct input_dev *input) 851 { 852 __s32 quirks = app->quirks; 853 854 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 855 return *slot->contactid; 856 857 if (quirks & MT_QUIRK_CYPRESS) 858 return cypress_compute_slot(app, slot); 859 860 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 861 return app->num_received; 862 863 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 864 return *slot->contactid - 1; 865 866 return input_mt_get_slot_by_key(input, *slot->contactid); 867 } 868 869 static void mt_release_pending_palms(struct mt_device *td, 870 struct mt_application *app, 871 struct input_dev *input) 872 { 873 int slotnum; 874 bool need_sync = false; 875 876 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 877 clear_bit(slotnum, app->pending_palm_slots); 878 879 input_mt_slot(input, slotnum); 880 input_mt_report_slot_state(input, MT_TOOL_PALM, false); 881 882 need_sync = true; 883 } 884 885 if (need_sync) { 886 input_mt_sync_frame(input); 887 input_sync(input); 888 } 889 } 890 891 /* 892 * this function is called when a whole packet has been received and processed, 893 * so that it can decide what to send to the input layer. 894 */ 895 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 896 struct input_dev *input) 897 { 898 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 899 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 900 901 input_mt_sync_frame(input); 902 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 903 input_sync(input); 904 905 mt_release_pending_palms(td, app, input); 906 907 app->num_received = 0; 908 app->left_button_state = 0; 909 910 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 911 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 912 else 913 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 914 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 915 } 916 917 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 918 { 919 long delta = value - app->prev_scantime; 920 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 921 922 app->jiffies = jiffies; 923 924 if (delta < 0) 925 delta += app->scantime_logical_max; 926 927 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 928 delta *= 100; 929 930 if (jdelta > MAX_TIMESTAMP_INTERVAL) 931 /* No data received for a while, resync the timestamp. */ 932 return 0; 933 else 934 return app->timestamp + delta; 935 } 936 937 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 938 struct hid_usage *usage, __s32 value) 939 { 940 /* we will handle the hidinput part later, now remains hiddev */ 941 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 942 hid->hiddev_hid_event(hid, field, usage, value); 943 944 return 1; 945 } 946 947 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 948 struct mt_application *app, 949 struct mt_usages *slot) 950 { 951 struct input_mt *mt = input->mt; 952 __s32 quirks = app->quirks; 953 bool valid = true; 954 bool confidence_state = true; 955 bool inrange_state = false; 956 int active; 957 int slotnum; 958 int tool = MT_TOOL_FINGER; 959 960 if (!slot) 961 return -EINVAL; 962 963 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 964 app->num_received >= app->num_expected) 965 return -EAGAIN; 966 967 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 968 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 969 valid = *slot->inrange_state; 970 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 971 valid = *slot->tip_state; 972 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 973 valid = *slot->confidence_state; 974 975 if (!valid) 976 return 0; 977 } 978 979 slotnum = mt_compute_slot(td, app, slot, input); 980 if (slotnum < 0 || slotnum >= td->maxcontacts) 981 return 0; 982 983 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 984 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 985 986 if (input_mt_is_active(i_slot) && 987 input_mt_is_used(mt, i_slot)) 988 return -EAGAIN; 989 } 990 991 if (quirks & MT_QUIRK_CONFIDENCE) 992 confidence_state = *slot->confidence_state; 993 994 if (quirks & MT_QUIRK_HOVERING) 995 inrange_state = *slot->inrange_state; 996 997 active = *slot->tip_state || inrange_state; 998 999 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1000 tool = MT_TOOL_DIAL; 1001 else if (unlikely(!confidence_state)) { 1002 tool = MT_TOOL_PALM; 1003 if (!active && 1004 input_mt_is_active(&mt->slots[slotnum])) { 1005 /* 1006 * The non-confidence was reported for 1007 * previously valid contact that is also no 1008 * longer valid. We can't simply report 1009 * lift-off as userspace will not be aware 1010 * of non-confidence, so we need to split 1011 * it into 2 events: active MT_TOOL_PALM 1012 * and a separate liftoff. 1013 */ 1014 active = true; 1015 set_bit(slotnum, app->pending_palm_slots); 1016 } 1017 } 1018 1019 input_mt_slot(input, slotnum); 1020 input_mt_report_slot_state(input, tool, active); 1021 if (active) { 1022 /* this finger is in proximity of the sensor */ 1023 int wide = (*slot->w > *slot->h); 1024 int major = max(*slot->w, *slot->h); 1025 int minor = min(*slot->w, *slot->h); 1026 int orientation = wide; 1027 int max_azimuth; 1028 int azimuth; 1029 1030 if (slot->a != DEFAULT_ZERO) { 1031 /* 1032 * Azimuth is counter-clockwise and ranges from [0, MAX) 1033 * (a full revolution). Convert it to clockwise ranging 1034 * [-MAX/2, MAX/2]. 1035 * 1036 * Note that ABS_MT_ORIENTATION require us to report 1037 * the limit of [-MAX/4, MAX/4], but the value can go 1038 * out of range to [-MAX/2, MAX/2] to report an upside 1039 * down ellipsis. 1040 */ 1041 azimuth = *slot->a; 1042 max_azimuth = input_abs_get_max(input, 1043 ABS_MT_ORIENTATION); 1044 if (azimuth > max_azimuth * 2) 1045 azimuth -= max_azimuth * 4; 1046 orientation = -azimuth; 1047 } 1048 1049 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1050 /* 1051 * divided by two to match visual scale of touch 1052 * for devices with this quirk 1053 */ 1054 major = major >> 1; 1055 minor = minor >> 1; 1056 } 1057 1058 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1059 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1060 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1061 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1062 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1063 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1064 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1065 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1066 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1067 1068 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1069 } 1070 1071 return 0; 1072 } 1073 1074 static void mt_process_mt_event(struct hid_device *hid, 1075 struct mt_application *app, 1076 struct hid_field *field, 1077 struct hid_usage *usage, 1078 __s32 value, 1079 bool first_packet) 1080 { 1081 __s32 quirks = app->quirks; 1082 struct input_dev *input = field->hidinput->input; 1083 1084 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1085 return; 1086 1087 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1088 1089 /* 1090 * For Win8 PTP touchpads we should only look at 1091 * non finger/touch events in the first_packet of a 1092 * (possible) multi-packet frame. 1093 */ 1094 if (!first_packet) 1095 return; 1096 1097 /* 1098 * For Win8 PTP touchpads we map both the clickpad click 1099 * and any "external" left buttons to BTN_LEFT if a 1100 * device claims to have both we need to report 1 for 1101 * BTN_LEFT if either is pressed, so we or all values 1102 * together and report the result in mt_sync_frame(). 1103 */ 1104 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1105 app->left_button_state |= value; 1106 return; 1107 } 1108 } 1109 1110 input_event(input, usage->type, usage->code, value); 1111 } 1112 1113 static void mt_touch_report(struct hid_device *hid, 1114 struct mt_report_data *rdata) 1115 { 1116 struct mt_device *td = hid_get_drvdata(hid); 1117 struct hid_report *report = rdata->report; 1118 struct mt_application *app = rdata->application; 1119 struct hid_field *field; 1120 struct input_dev *input; 1121 struct mt_usages *slot; 1122 bool first_packet; 1123 unsigned count; 1124 int r, n; 1125 int scantime = 0; 1126 int contact_count = -1; 1127 1128 /* sticky fingers release in progress, abort */ 1129 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1130 return; 1131 1132 scantime = *app->scantime; 1133 app->timestamp = mt_compute_timestamp(app, scantime); 1134 if (app->raw_cc != DEFAULT_ZERO) 1135 contact_count = *app->raw_cc; 1136 1137 /* 1138 * Includes multi-packet support where subsequent 1139 * packets are sent with zero contactcount. 1140 */ 1141 if (contact_count >= 0) { 1142 /* 1143 * For Win8 PTPs the first packet (td->num_received == 0) may 1144 * have a contactcount of 0 if there only is a button event. 1145 * We double check that this is not a continuation packet 1146 * of a possible multi-packet frame be checking that the 1147 * timestamp has changed. 1148 */ 1149 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1150 app->num_received == 0 && 1151 app->prev_scantime != scantime) 1152 app->num_expected = contact_count; 1153 /* A non 0 contact count always indicates a first packet */ 1154 else if (contact_count) 1155 app->num_expected = contact_count; 1156 } 1157 app->prev_scantime = scantime; 1158 1159 first_packet = app->num_received == 0; 1160 1161 input = report->field[0]->hidinput->input; 1162 1163 list_for_each_entry(slot, &app->mt_usages, list) { 1164 if (!mt_process_slot(td, input, app, slot)) 1165 app->num_received++; 1166 } 1167 1168 for (r = 0; r < report->maxfield; r++) { 1169 field = report->field[r]; 1170 count = field->report_count; 1171 1172 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1173 continue; 1174 1175 for (n = 0; n < count; n++) 1176 mt_process_mt_event(hid, app, field, 1177 &field->usage[n], field->value[n], 1178 first_packet); 1179 } 1180 1181 if (app->num_received >= app->num_expected) 1182 mt_sync_frame(td, app, input); 1183 1184 /* 1185 * Windows 8 specs says 2 things: 1186 * - once a contact has been reported, it has to be reported in each 1187 * subsequent report 1188 * - the report rate when fingers are present has to be at least 1189 * the refresh rate of the screen, 60 or 120 Hz 1190 * 1191 * I interprete this that the specification forces a report rate of 1192 * at least 60 Hz for a touchscreen to be certified. 1193 * Which means that if we do not get a report whithin 16 ms, either 1194 * something wrong happens, either the touchscreen forgets to send 1195 * a release. Taking a reasonable margin allows to remove issues 1196 * with USB communication or the load of the machine. 1197 * 1198 * Given that Win 8 devices are forced to send a release, this will 1199 * only affect laggish machines and the ones that have a firmware 1200 * defect. 1201 */ 1202 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1203 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1204 mod_timer(&td->release_timer, 1205 jiffies + msecs_to_jiffies(100)); 1206 else 1207 del_timer(&td->release_timer); 1208 } 1209 1210 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1211 } 1212 1213 static int mt_touch_input_configured(struct hid_device *hdev, 1214 struct hid_input *hi, 1215 struct mt_application *app) 1216 { 1217 struct mt_device *td = hid_get_drvdata(hdev); 1218 struct mt_class *cls = &td->mtclass; 1219 struct input_dev *input = hi->input; 1220 int ret; 1221 1222 if (!td->maxcontacts) 1223 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1224 1225 mt_post_parse(td, app); 1226 if (td->serial_maybe) 1227 mt_post_parse_default_settings(td, app); 1228 1229 if (cls->is_indirect) 1230 app->mt_flags |= INPUT_MT_POINTER; 1231 1232 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1233 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1234 1235 /* check for clickpads */ 1236 if ((app->mt_flags & INPUT_MT_POINTER) && 1237 (app->buttons_count == 1)) 1238 td->is_buttonpad = true; 1239 1240 if (td->is_buttonpad) 1241 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1242 1243 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1244 BITS_TO_LONGS(td->maxcontacts), 1245 sizeof(long), 1246 GFP_KERNEL); 1247 if (!app->pending_palm_slots) 1248 return -ENOMEM; 1249 1250 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1251 if (ret) 1252 return ret; 1253 1254 app->mt_flags = 0; 1255 return 0; 1256 } 1257 1258 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1259 max, EV_KEY, (c)) 1260 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1261 struct hid_field *field, struct hid_usage *usage, 1262 unsigned long **bit, int *max) 1263 { 1264 struct mt_device *td = hid_get_drvdata(hdev); 1265 struct mt_application *application; 1266 struct mt_report_data *rdata; 1267 1268 rdata = mt_find_report_data(td, field->report); 1269 if (!rdata) { 1270 hid_err(hdev, "failed to allocate data for report\n"); 1271 return 0; 1272 } 1273 1274 application = rdata->application; 1275 1276 /* 1277 * If mtclass.export_all_inputs is not set, only map fields from 1278 * TouchScreen or TouchPad collections. We need to ignore fields 1279 * that belong to other collections such as Mouse that might have 1280 * the same GenericDesktop usages. 1281 */ 1282 if (!td->mtclass.export_all_inputs && 1283 field->application != HID_DG_TOUCHSCREEN && 1284 field->application != HID_DG_PEN && 1285 field->application != HID_DG_TOUCHPAD && 1286 field->application != HID_GD_KEYBOARD && 1287 field->application != HID_GD_SYSTEM_CONTROL && 1288 field->application != HID_CP_CONSUMER_CONTROL && 1289 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1290 field->application != HID_GD_SYSTEM_MULTIAXIS && 1291 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1292 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1293 return -1; 1294 1295 /* 1296 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1297 * touchpad report descriptor. We need to treat these as an array to 1298 * map usages to input keys. 1299 */ 1300 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1301 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1302 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1303 set_bit(EV_REP, hi->input->evbit); 1304 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1305 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1306 switch (usage->hid & HID_USAGE) { 1307 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1308 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1309 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1310 case 0x6b: mt_map_key_clear(KEY_F21); break; 1311 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1312 default: 1313 return -1; 1314 } 1315 return 1; 1316 } 1317 1318 if (rdata->is_mt_collection) 1319 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1320 application); 1321 1322 /* let hid-core decide for the others */ 1323 return 0; 1324 } 1325 1326 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1327 struct hid_field *field, struct hid_usage *usage, 1328 unsigned long **bit, int *max) 1329 { 1330 struct mt_device *td = hid_get_drvdata(hdev); 1331 struct mt_report_data *rdata; 1332 1333 rdata = mt_find_report_data(td, field->report); 1334 if (rdata && rdata->is_mt_collection) { 1335 /* We own these mappings, tell hid-input to ignore them */ 1336 return -1; 1337 } 1338 1339 /* let hid-core decide for the others */ 1340 return 0; 1341 } 1342 1343 static int mt_event(struct hid_device *hid, struct hid_field *field, 1344 struct hid_usage *usage, __s32 value) 1345 { 1346 struct mt_device *td = hid_get_drvdata(hid); 1347 struct mt_report_data *rdata; 1348 1349 rdata = mt_find_report_data(td, field->report); 1350 if (rdata && rdata->is_mt_collection) 1351 return mt_touch_event(hid, field, usage, value); 1352 1353 return 0; 1354 } 1355 1356 static void mt_report(struct hid_device *hid, struct hid_report *report) 1357 { 1358 struct mt_device *td = hid_get_drvdata(hid); 1359 struct hid_field *field = report->field[0]; 1360 struct mt_report_data *rdata; 1361 1362 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1363 return; 1364 1365 rdata = mt_find_report_data(td, report); 1366 if (rdata && rdata->is_mt_collection) 1367 return mt_touch_report(hid, rdata); 1368 1369 if (field && field->hidinput && field->hidinput->input) 1370 input_sync(field->hidinput->input); 1371 } 1372 1373 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1374 struct hid_field *field, 1375 struct hid_usage *usage, 1376 enum latency_mode latency, 1377 bool surface_switch, 1378 bool button_switch) 1379 { 1380 struct mt_device *td = hid_get_drvdata(hdev); 1381 struct mt_class *cls = &td->mtclass; 1382 struct hid_report *report = field->report; 1383 unsigned int index = usage->usage_index; 1384 char *buf; 1385 u32 report_len; 1386 int max; 1387 1388 switch (usage->hid) { 1389 case HID_DG_INPUTMODE: 1390 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1391 report_len = hid_report_len(report); 1392 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1393 if (!buf) { 1394 hid_err(hdev, 1395 "failed to allocate buffer for report\n"); 1396 return false; 1397 } 1398 hid_hw_raw_request(hdev, report->id, buf, report_len, 1399 HID_FEATURE_REPORT, 1400 HID_REQ_GET_REPORT); 1401 kfree(buf); 1402 } 1403 1404 field->value[index] = td->inputmode_value; 1405 return true; 1406 1407 case HID_DG_CONTACTMAX: 1408 if (cls->maxcontacts) { 1409 max = min_t(int, field->logical_maximum, 1410 cls->maxcontacts); 1411 if (field->value[index] != max) { 1412 field->value[index] = max; 1413 return true; 1414 } 1415 } 1416 break; 1417 1418 case HID_DG_LATENCYMODE: 1419 field->value[index] = latency; 1420 return true; 1421 1422 case HID_DG_SURFACESWITCH: 1423 field->value[index] = surface_switch; 1424 return true; 1425 1426 case HID_DG_BUTTONSWITCH: 1427 field->value[index] = button_switch; 1428 return true; 1429 } 1430 1431 return false; /* no need to update the report */ 1432 } 1433 1434 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1435 bool surface_switch, bool button_switch) 1436 { 1437 struct hid_report_enum *rep_enum; 1438 struct hid_report *rep; 1439 struct hid_usage *usage; 1440 int i, j; 1441 bool update_report; 1442 1443 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1444 list_for_each_entry(rep, &rep_enum->report_list, list) { 1445 update_report = false; 1446 1447 for (i = 0; i < rep->maxfield; i++) { 1448 /* Ignore if report count is out of bounds. */ 1449 if (rep->field[i]->report_count < 1) 1450 continue; 1451 1452 for (j = 0; j < rep->field[i]->maxusage; j++) { 1453 usage = &rep->field[i]->usage[j]; 1454 1455 if (mt_need_to_apply_feature(hdev, 1456 rep->field[i], 1457 usage, 1458 latency, 1459 surface_switch, 1460 button_switch)) 1461 update_report = true; 1462 } 1463 } 1464 1465 if (update_report) 1466 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1467 } 1468 } 1469 1470 static void mt_post_parse_default_settings(struct mt_device *td, 1471 struct mt_application *app) 1472 { 1473 __s32 quirks = app->quirks; 1474 1475 /* unknown serial device needs special quirks */ 1476 if (list_is_singular(&app->mt_usages)) { 1477 quirks |= MT_QUIRK_ALWAYS_VALID; 1478 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1479 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1480 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1481 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1482 } 1483 1484 app->quirks = quirks; 1485 } 1486 1487 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1488 { 1489 if (!app->have_contact_count) 1490 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1491 } 1492 1493 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1494 { 1495 struct mt_device *td = hid_get_drvdata(hdev); 1496 char *name; 1497 const char *suffix = NULL; 1498 unsigned int application = 0; 1499 struct mt_report_data *rdata; 1500 struct mt_application *mt_application = NULL; 1501 struct hid_report *report; 1502 int ret; 1503 1504 list_for_each_entry(report, &hi->reports, hidinput_list) { 1505 application = report->application; 1506 rdata = mt_find_report_data(td, report); 1507 if (!rdata) { 1508 hid_err(hdev, "failed to allocate data for report\n"); 1509 return -ENOMEM; 1510 } 1511 1512 mt_application = rdata->application; 1513 1514 if (rdata->is_mt_collection) { 1515 ret = mt_touch_input_configured(hdev, hi, 1516 mt_application); 1517 if (ret) 1518 return ret; 1519 } 1520 1521 /* 1522 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1523 * for the stylus. Check this first, and then rely on 1524 * the application field. 1525 */ 1526 if (report->field[0]->physical == HID_DG_STYLUS) { 1527 suffix = "Pen"; 1528 /* force BTN_STYLUS to allow tablet matching in udev */ 1529 __set_bit(BTN_STYLUS, hi->input->keybit); 1530 } 1531 } 1532 1533 if (!suffix) { 1534 switch (application) { 1535 case HID_GD_KEYBOARD: 1536 case HID_GD_KEYPAD: 1537 case HID_GD_MOUSE: 1538 case HID_DG_TOUCHPAD: 1539 case HID_GD_SYSTEM_CONTROL: 1540 case HID_CP_CONSUMER_CONTROL: 1541 case HID_GD_WIRELESS_RADIO_CTLS: 1542 case HID_GD_SYSTEM_MULTIAXIS: 1543 /* already handled by hid core */ 1544 break; 1545 case HID_DG_TOUCHSCREEN: 1546 /* we do not set suffix = "Touchscreen" */ 1547 hi->input->name = hdev->name; 1548 break; 1549 case HID_DG_STYLUS: 1550 /* force BTN_STYLUS to allow tablet matching in udev */ 1551 __set_bit(BTN_STYLUS, hi->input->keybit); 1552 break; 1553 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1554 suffix = "Custom Media Keys"; 1555 break; 1556 default: 1557 suffix = "UNKNOWN"; 1558 break; 1559 } 1560 } 1561 1562 if (suffix) { 1563 name = devm_kzalloc(&hi->input->dev, 1564 strlen(hdev->name) + strlen(suffix) + 2, 1565 GFP_KERNEL); 1566 if (name) { 1567 sprintf(name, "%s %s", hdev->name, suffix); 1568 hi->input->name = name; 1569 } 1570 } 1571 1572 return 0; 1573 } 1574 1575 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1576 { 1577 if (field->usage[0].hid != usage || 1578 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1579 return; 1580 1581 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1582 field->flags |= HID_MAIN_ITEM_VARIABLE; 1583 } 1584 1585 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1586 { 1587 struct hid_report *report; 1588 int i; 1589 1590 list_for_each_entry(report, 1591 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1592 list) { 1593 1594 if (!report->maxfield) 1595 continue; 1596 1597 for (i = 0; i < report->maxfield; i++) 1598 if (report->field[i]->maxusage >= 1) 1599 mt_fix_const_field(report->field[i], usage); 1600 } 1601 } 1602 1603 static void mt_release_contacts(struct hid_device *hid) 1604 { 1605 struct hid_input *hidinput; 1606 struct mt_application *application; 1607 struct mt_device *td = hid_get_drvdata(hid); 1608 1609 list_for_each_entry(hidinput, &hid->inputs, list) { 1610 struct input_dev *input_dev = hidinput->input; 1611 struct input_mt *mt = input_dev->mt; 1612 int i; 1613 1614 if (mt) { 1615 for (i = 0; i < mt->num_slots; i++) { 1616 input_mt_slot(input_dev, i); 1617 input_mt_report_slot_state(input_dev, 1618 MT_TOOL_FINGER, 1619 false); 1620 } 1621 input_mt_sync_frame(input_dev); 1622 input_sync(input_dev); 1623 } 1624 } 1625 1626 list_for_each_entry(application, &td->applications, list) { 1627 application->num_received = 0; 1628 } 1629 } 1630 1631 static void mt_expired_timeout(struct timer_list *t) 1632 { 1633 struct mt_device *td = from_timer(td, t, release_timer); 1634 struct hid_device *hdev = td->hdev; 1635 1636 /* 1637 * An input report came in just before we release the sticky fingers, 1638 * it will take care of the sticky fingers. 1639 */ 1640 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1641 return; 1642 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1643 mt_release_contacts(hdev); 1644 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1645 } 1646 1647 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1648 { 1649 int ret, i; 1650 struct mt_device *td; 1651 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1652 1653 for (i = 0; mt_classes[i].name ; i++) { 1654 if (id->driver_data == mt_classes[i].name) { 1655 mtclass = &(mt_classes[i]); 1656 break; 1657 } 1658 } 1659 1660 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1661 if (!td) { 1662 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1663 return -ENOMEM; 1664 } 1665 td->hdev = hdev; 1666 td->mtclass = *mtclass; 1667 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1668 hid_set_drvdata(hdev, td); 1669 1670 INIT_LIST_HEAD(&td->applications); 1671 INIT_LIST_HEAD(&td->reports); 1672 1673 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1674 td->serial_maybe = true; 1675 1676 /* This allows the driver to correctly support devices 1677 * that emit events over several HID messages. 1678 */ 1679 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1680 1681 /* 1682 * This allows the driver to handle different input sensors 1683 * that emits events through different applications on the same HID 1684 * device. 1685 */ 1686 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1687 1688 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1689 1690 ret = hid_parse(hdev); 1691 if (ret != 0) 1692 return ret; 1693 1694 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1695 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1696 1697 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1698 if (ret) 1699 return ret; 1700 1701 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1702 if (ret) 1703 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1704 hdev->name); 1705 1706 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1707 1708 return 0; 1709 } 1710 1711 #ifdef CONFIG_PM 1712 static int mt_reset_resume(struct hid_device *hdev) 1713 { 1714 mt_release_contacts(hdev); 1715 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1716 return 0; 1717 } 1718 1719 static int mt_resume(struct hid_device *hdev) 1720 { 1721 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1722 * It should be safe to send it to other devices too. 1723 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1724 1725 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1726 1727 return 0; 1728 } 1729 #endif 1730 1731 static void mt_remove(struct hid_device *hdev) 1732 { 1733 struct mt_device *td = hid_get_drvdata(hdev); 1734 1735 del_timer_sync(&td->release_timer); 1736 1737 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1738 hid_hw_stop(hdev); 1739 } 1740 1741 /* 1742 * This list contains only: 1743 * - VID/PID of products not working with the default multitouch handling 1744 * - 2 generic rules. 1745 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1746 */ 1747 static const struct hid_device_id mt_devices[] = { 1748 1749 /* 3M panels */ 1750 { .driver_data = MT_CLS_3M, 1751 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1752 USB_DEVICE_ID_3M1968) }, 1753 { .driver_data = MT_CLS_3M, 1754 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1755 USB_DEVICE_ID_3M2256) }, 1756 { .driver_data = MT_CLS_3M, 1757 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1758 USB_DEVICE_ID_3M3266) }, 1759 1760 /* Alps devices */ 1761 { .driver_data = MT_CLS_WIN_8_DUAL, 1762 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1763 USB_VENDOR_ID_ALPS_JP, 1764 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1765 { .driver_data = MT_CLS_WIN_8_DUAL, 1766 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1767 USB_VENDOR_ID_ALPS_JP, 1768 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1769 1770 /* Lenovo X1 TAB Gen 2 */ 1771 { .driver_data = MT_CLS_WIN_8_DUAL, 1772 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1773 USB_VENDOR_ID_LENOVO, 1774 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1775 1776 /* Anton devices */ 1777 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1778 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1779 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1780 1781 /* Asus T304UA */ 1782 { .driver_data = MT_CLS_ASUS, 1783 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1784 USB_VENDOR_ID_ASUSTEK, 1785 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1786 1787 /* Atmel panels */ 1788 { .driver_data = MT_CLS_SERIAL, 1789 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1790 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1791 1792 /* Baanto multitouch devices */ 1793 { .driver_data = MT_CLS_NSMU, 1794 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1795 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1796 1797 /* Cando panels */ 1798 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1799 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1800 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1801 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1802 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1803 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1804 1805 /* Chunghwa Telecom touch panels */ 1806 { .driver_data = MT_CLS_NSMU, 1807 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1808 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1809 1810 /* CJTouch panels */ 1811 { .driver_data = MT_CLS_NSMU, 1812 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1813 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1814 { .driver_data = MT_CLS_NSMU, 1815 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1816 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1817 1818 /* CVTouch panels */ 1819 { .driver_data = MT_CLS_NSMU, 1820 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1821 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1822 1823 /* eGalax devices (resistive) */ 1824 { .driver_data = MT_CLS_EGALAX, 1825 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1826 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1827 { .driver_data = MT_CLS_EGALAX, 1828 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1829 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1830 1831 /* eGalax devices (capacitive) */ 1832 { .driver_data = MT_CLS_EGALAX_SERIAL, 1833 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1834 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1835 { .driver_data = MT_CLS_EGALAX, 1836 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1837 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1838 { .driver_data = MT_CLS_EGALAX_SERIAL, 1839 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1840 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1841 { .driver_data = MT_CLS_EGALAX_SERIAL, 1842 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1843 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1844 { .driver_data = MT_CLS_EGALAX_SERIAL, 1845 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1846 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1847 { .driver_data = MT_CLS_EGALAX_SERIAL, 1848 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1849 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1850 { .driver_data = MT_CLS_EGALAX, 1851 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1852 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1853 { .driver_data = MT_CLS_EGALAX, 1854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1856 { .driver_data = MT_CLS_EGALAX_SERIAL, 1857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1859 { .driver_data = MT_CLS_EGALAX, 1860 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1862 { .driver_data = MT_CLS_EGALAX, 1863 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1864 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1865 { .driver_data = MT_CLS_EGALAX, 1866 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1867 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1868 { .driver_data = MT_CLS_EGALAX, 1869 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1870 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1871 { .driver_data = MT_CLS_EGALAX_SERIAL, 1872 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1873 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1874 { .driver_data = MT_CLS_EGALAX_SERIAL, 1875 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1876 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1877 { .driver_data = MT_CLS_EGALAX_SERIAL, 1878 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1880 1881 /* Elitegroup panel */ 1882 { .driver_data = MT_CLS_SERIAL, 1883 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1884 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1885 1886 /* Flatfrog Panels */ 1887 { .driver_data = MT_CLS_FLATFROG, 1888 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1889 USB_DEVICE_ID_MULTITOUCH_3200) }, 1890 1891 /* FocalTech Panels */ 1892 { .driver_data = MT_CLS_SERIAL, 1893 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1894 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1895 1896 /* GeneralTouch panel */ 1897 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1898 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1899 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1900 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1901 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1902 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1903 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1904 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1905 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1906 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1907 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1908 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1909 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1910 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1911 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1912 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1913 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1914 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1915 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1916 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1917 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1918 1919 /* Gametel game controller */ 1920 { .driver_data = MT_CLS_NSMU, 1921 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1922 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1923 1924 /* GoodTouch panels */ 1925 { .driver_data = MT_CLS_NSMU, 1926 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1927 USB_DEVICE_ID_GOODTOUCH_000f) }, 1928 1929 /* Hanvon panels */ 1930 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1931 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1932 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1933 1934 /* Ilitek dual touch panel */ 1935 { .driver_data = MT_CLS_NSMU, 1936 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1937 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1938 1939 /* LG Melfas panel */ 1940 { .driver_data = MT_CLS_LG, 1941 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1942 USB_DEVICE_ID_LG_MELFAS_MT) }, 1943 1944 /* MosArt panels */ 1945 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1946 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1947 USB_DEVICE_ID_ASUS_T91MT)}, 1948 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1949 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1950 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1951 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1952 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1953 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1954 1955 /* Novatek Panel */ 1956 { .driver_data = MT_CLS_NSMU, 1957 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1958 USB_DEVICE_ID_NOVATEK_PCT) }, 1959 1960 /* Ntrig Panel */ 1961 { .driver_data = MT_CLS_NSMU, 1962 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1963 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1964 1965 /* Panasonic panels */ 1966 { .driver_data = MT_CLS_PANASONIC, 1967 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1968 USB_DEVICE_ID_PANABOARD_UBT780) }, 1969 { .driver_data = MT_CLS_PANASONIC, 1970 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1971 USB_DEVICE_ID_PANABOARD_UBT880) }, 1972 1973 /* PixArt optical touch screen */ 1974 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1975 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1976 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1977 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1978 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1979 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1980 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1981 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1982 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1983 1984 /* PixCir-based panels */ 1985 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1986 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1987 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1988 1989 /* Quanta-based panels */ 1990 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1991 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1992 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1993 1994 /* Razer touchpads */ 1995 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 1996 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1997 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 1998 1999 /* Stantum panels */ 2000 { .driver_data = MT_CLS_CONFIDENCE, 2001 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2002 USB_DEVICE_ID_MTP_STM)}, 2003 2004 /* TopSeed panels */ 2005 { .driver_data = MT_CLS_TOPSEED, 2006 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2007 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2008 2009 /* Touch International panels */ 2010 { .driver_data = MT_CLS_NSMU, 2011 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2012 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2013 2014 /* Unitec panels */ 2015 { .driver_data = MT_CLS_NSMU, 2016 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2017 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2018 { .driver_data = MT_CLS_NSMU, 2019 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2020 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2021 2022 /* VTL panels */ 2023 { .driver_data = MT_CLS_VTL, 2024 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2025 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2026 2027 /* Wistron panels */ 2028 { .driver_data = MT_CLS_NSMU, 2029 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2030 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2031 2032 /* XAT */ 2033 { .driver_data = MT_CLS_NSMU, 2034 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2035 USB_DEVICE_ID_XAT_CSR) }, 2036 2037 /* Xiroku */ 2038 { .driver_data = MT_CLS_NSMU, 2039 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2040 USB_DEVICE_ID_XIROKU_SPX) }, 2041 { .driver_data = MT_CLS_NSMU, 2042 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2043 USB_DEVICE_ID_XIROKU_MPX) }, 2044 { .driver_data = MT_CLS_NSMU, 2045 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2046 USB_DEVICE_ID_XIROKU_CSR) }, 2047 { .driver_data = MT_CLS_NSMU, 2048 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2049 USB_DEVICE_ID_XIROKU_SPX1) }, 2050 { .driver_data = MT_CLS_NSMU, 2051 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2052 USB_DEVICE_ID_XIROKU_MPX1) }, 2053 { .driver_data = MT_CLS_NSMU, 2054 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2055 USB_DEVICE_ID_XIROKU_CSR1) }, 2056 { .driver_data = MT_CLS_NSMU, 2057 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2058 USB_DEVICE_ID_XIROKU_SPX2) }, 2059 { .driver_data = MT_CLS_NSMU, 2060 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2061 USB_DEVICE_ID_XIROKU_MPX2) }, 2062 { .driver_data = MT_CLS_NSMU, 2063 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2064 USB_DEVICE_ID_XIROKU_CSR2) }, 2065 2066 /* Google MT devices */ 2067 { .driver_data = MT_CLS_GOOGLE, 2068 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2069 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2070 2071 /* Generic MT device */ 2072 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2073 2074 /* Generic Win 8 certified MT device */ 2075 { .driver_data = MT_CLS_WIN_8, 2076 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2077 HID_ANY_ID, HID_ANY_ID) }, 2078 { } 2079 }; 2080 MODULE_DEVICE_TABLE(hid, mt_devices); 2081 2082 static const struct hid_usage_id mt_grabbed_usages[] = { 2083 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2084 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2085 }; 2086 2087 static struct hid_driver mt_driver = { 2088 .name = "hid-multitouch", 2089 .id_table = mt_devices, 2090 .probe = mt_probe, 2091 .remove = mt_remove, 2092 .input_mapping = mt_input_mapping, 2093 .input_mapped = mt_input_mapped, 2094 .input_configured = mt_input_configured, 2095 .feature_mapping = mt_feature_mapping, 2096 .usage_table = mt_grabbed_usages, 2097 .event = mt_event, 2098 .report = mt_report, 2099 #ifdef CONFIG_PM 2100 .reset_resume = mt_reset_resume, 2101 .resume = mt_resume, 2102 #endif 2103 }; 2104 module_hid_driver(mt_driver); 2105