1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * HID driver for multitouch panels 4 * 5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 8 * Copyright (c) 2012-2013 Red Hat, Inc 9 * 10 * This code is partly based on hid-egalax.c: 11 * 12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 14 * Copyright (c) 2010 Canonical, Ltd. 15 * 16 * This code is partly based on hid-3m-pct.c: 17 * 18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 20 * Copyright (c) 2010 Canonical, Ltd. 21 */ 22 23/* 24 */ 25 26/* 27 * This driver is regularly tested thanks to the test suite in hid-tools[1]. 28 * Please run these regression tests before patching this module so that 29 * your patch won't break existing known devices. 30 * 31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools 32 */ 33 34#include <linux/device.h> 35#include <linux/hid.h> 36#include <linux/module.h> 37#include <linux/slab.h> 38#include <linux/input/mt.h> 39#include <linux/jiffies.h> 40#include <linux/string.h> 41#include <linux/timer.h> 42 43 44MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 45MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 46MODULE_DESCRIPTION("HID multitouch panels"); 47MODULE_LICENSE("GPL"); 48 49#include "hid-ids.h" 50 51/* quirks to control the device */ 52#define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 53#define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 54#define MT_QUIRK_CYPRESS BIT(2) 55#define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 56#define MT_QUIRK_ALWAYS_VALID BIT(4) 57#define MT_QUIRK_VALID_IS_INRANGE BIT(5) 58#define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 59#define MT_QUIRK_CONFIDENCE BIT(7) 60#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 61#define MT_QUIRK_NO_AREA BIT(9) 62#define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 63#define MT_QUIRK_HOVERING BIT(11) 64#define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 65#define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 66#define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 67#define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 68#define MT_QUIRK_STICKY_FINGERS BIT(16) 69#define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 70#define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 71#define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 72#define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 73 74#define MT_INPUTMODE_TOUCHSCREEN 0x02 75#define MT_INPUTMODE_TOUCHPAD 0x03 76 77#define MT_BUTTONTYPE_CLICKPAD 0 78 79enum latency_mode { 80 HID_LATENCY_NORMAL = 0, 81 HID_LATENCY_HIGH = 1, 82}; 83 84#define MT_IO_FLAGS_RUNNING 0 85#define MT_IO_FLAGS_ACTIVE_SLOTS 1 86#define MT_IO_FLAGS_PENDING_SLOTS 2 87 88static const bool mtrue = true; /* default for true */ 89static const bool mfalse; /* default for false */ 90static const __s32 mzero; /* default for 0 */ 91 92#define DEFAULT_TRUE ((void *)&mtrue) 93#define DEFAULT_FALSE ((void *)&mfalse) 94#define DEFAULT_ZERO ((void *)&mzero) 95 96struct mt_usages { 97 struct list_head list; 98 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 99 __s32 *contactid; /* the device ContactID assigned to this slot */ 100 bool *tip_state; /* is the touch valid? */ 101 bool *inrange_state; /* is the finger in proximity of the sensor? */ 102 bool *confidence_state; /* is the touch made by a finger? */ 103}; 104 105struct mt_application { 106 struct list_head list; 107 unsigned int application; 108 unsigned int report_id; 109 struct list_head mt_usages; /* mt usages list */ 110 111 __s32 quirks; 112 113 __s32 *scantime; /* scantime reported */ 114 __s32 scantime_logical_max; /* max value for raw scantime */ 115 116 __s32 *raw_cc; /* contact count in the report */ 117 int left_button_state; /* left button state */ 118 unsigned int mt_flags; /* flags to pass to input-mt */ 119 120 unsigned long *pending_palm_slots; /* slots where we reported palm 121 * and need to release */ 122 123 __u8 num_received; /* how many contacts we received */ 124 __u8 num_expected; /* expected last contact index */ 125 __u8 buttons_count; /* number of physical buttons per touchpad */ 126 __u8 touches_by_report; /* how many touches are present in one report: 127 * 1 means we should use a serial protocol 128 * > 1 means hybrid (multitouch) protocol 129 */ 130 131 __s32 dev_time; /* the scan time provided by the device */ 132 unsigned long jiffies; /* the frame's jiffies */ 133 int timestamp; /* the timestamp to be sent */ 134 int prev_scantime; /* scantime reported previously */ 135 136 bool have_contact_count; 137}; 138 139struct mt_class { 140 __s32 name; /* MT_CLS */ 141 __s32 quirks; 142 __s32 sn_move; /* Signal/noise ratio for move events */ 143 __s32 sn_width; /* Signal/noise ratio for width events */ 144 __s32 sn_height; /* Signal/noise ratio for height events */ 145 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 146 __u8 maxcontacts; 147 bool is_indirect; /* true for touchpads */ 148 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 149}; 150 151struct mt_report_data { 152 struct list_head list; 153 struct hid_report *report; 154 struct mt_application *application; 155 bool is_mt_collection; 156}; 157 158struct mt_device { 159 struct mt_class mtclass; /* our mt device class */ 160 struct timer_list release_timer; /* to release sticky fingers */ 161 struct hid_device *hdev; /* hid_device we're attached to */ 162 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 163 __u8 inputmode_value; /* InputMode HID feature value */ 164 __u8 maxcontacts; 165 bool is_buttonpad; /* is this device a button pad? */ 166 bool serial_maybe; /* need to check for serial protocol */ 167 168 struct list_head applications; 169 struct list_head reports; 170}; 171 172static void mt_post_parse_default_settings(struct mt_device *td, 173 struct mt_application *app); 174static void mt_post_parse(struct mt_device *td, struct mt_application *app); 175 176/* classes of device behavior */ 177#define MT_CLS_DEFAULT 0x0001 178 179#define MT_CLS_SERIAL 0x0002 180#define MT_CLS_CONFIDENCE 0x0003 181#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 182#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 183#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 184#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 185/* reserved 0x0008 */ 186#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 187#define MT_CLS_NSMU 0x000a 188/* reserved 0x0010 */ 189/* reserved 0x0011 */ 190#define MT_CLS_WIN_8 0x0012 191#define MT_CLS_EXPORT_ALL_INPUTS 0x0013 192/* reserved 0x0014 */ 193#define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 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#define MT_CLS_SMART_TECH 0x0113 211 212#define MT_DEFAULT_MAXCONTACT 10 213#define MT_MAX_MAXCONTACT 250 214 215/* 216 * Resync device and local timestamps after that many microseconds without 217 * receiving data. 218 */ 219#define MAX_TIMESTAMP_INTERVAL 1000000 220 221#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 222#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 223 224/* 225 * these device-dependent functions determine what slot corresponds 226 * to a valid contact that was just read. 227 */ 228 229static int cypress_compute_slot(struct mt_application *application, 230 struct mt_usages *slot) 231{ 232 if (*slot->contactid != 0 || application->num_received == 0) 233 return *slot->contactid; 234 else 235 return -1; 236} 237 238static const struct mt_class mt_classes[] = { 239 { .name = MT_CLS_DEFAULT, 240 .quirks = MT_QUIRK_ALWAYS_VALID | 241 MT_QUIRK_CONTACT_CNT_ACCURATE }, 242 { .name = MT_CLS_NSMU, 243 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 244 { .name = MT_CLS_SERIAL, 245 .quirks = MT_QUIRK_ALWAYS_VALID}, 246 { .name = MT_CLS_CONFIDENCE, 247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 248 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 249 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 250 MT_QUIRK_SLOT_IS_CONTACTID }, 251 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 252 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 253 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 254 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 255 .quirks = MT_QUIRK_VALID_IS_INRANGE | 256 MT_QUIRK_SLOT_IS_CONTACTID, 257 .maxcontacts = 2 }, 258 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 259 .quirks = MT_QUIRK_VALID_IS_INRANGE | 260 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 261 .maxcontacts = 2 }, 262 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 263 .quirks = MT_QUIRK_VALID_IS_INRANGE | 264 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 265 { .name = MT_CLS_WIN_8, 266 .quirks = MT_QUIRK_ALWAYS_VALID | 267 MT_QUIRK_IGNORE_DUPLICATES | 268 MT_QUIRK_HOVERING | 269 MT_QUIRK_CONTACT_CNT_ACCURATE | 270 MT_QUIRK_STICKY_FINGERS | 271 MT_QUIRK_WIN8_PTP_BUTTONS, 272 .export_all_inputs = true }, 273 { .name = MT_CLS_EXPORT_ALL_INPUTS, 274 .quirks = MT_QUIRK_ALWAYS_VALID | 275 MT_QUIRK_CONTACT_CNT_ACCURATE, 276 .export_all_inputs = true }, 277 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 278 .quirks = MT_QUIRK_ALWAYS_VALID | 279 MT_QUIRK_IGNORE_DUPLICATES | 280 MT_QUIRK_HOVERING | 281 MT_QUIRK_CONTACT_CNT_ACCURATE | 282 MT_QUIRK_STICKY_FINGERS | 283 MT_QUIRK_WIN8_PTP_BUTTONS | 284 MT_QUIRK_FORCE_MULTI_INPUT, 285 .export_all_inputs = true }, 286 287 /* 288 * vendor specific classes 289 */ 290 { .name = MT_CLS_3M, 291 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 292 MT_QUIRK_SLOT_IS_CONTACTID | 293 MT_QUIRK_TOUCH_SIZE_SCALING, 294 .sn_move = 2048, 295 .sn_width = 128, 296 .sn_height = 128, 297 .maxcontacts = 60, 298 }, 299 { .name = MT_CLS_EGALAX, 300 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 301 MT_QUIRK_VALID_IS_INRANGE, 302 .sn_move = 4096, 303 .sn_pressure = 32, 304 }, 305 { .name = MT_CLS_EGALAX_SERIAL, 306 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 307 MT_QUIRK_ALWAYS_VALID, 308 .sn_move = 4096, 309 .sn_pressure = 32, 310 }, 311 { .name = MT_CLS_TOPSEED, 312 .quirks = MT_QUIRK_ALWAYS_VALID, 313 .is_indirect = true, 314 .maxcontacts = 2, 315 }, 316 { .name = MT_CLS_PANASONIC, 317 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 318 .maxcontacts = 4 }, 319 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 320 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 321 MT_QUIRK_VALID_IS_INRANGE | 322 MT_QUIRK_SLOT_IS_CONTACTID, 323 .maxcontacts = 2 324 }, 325 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 326 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 327 MT_QUIRK_SLOT_IS_CONTACTID 328 }, 329 330 { .name = MT_CLS_FLATFROG, 331 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 332 MT_QUIRK_NO_AREA, 333 .sn_move = 2048, 334 .maxcontacts = 40, 335 }, 336 { .name = MT_CLS_LG, 337 .quirks = MT_QUIRK_ALWAYS_VALID | 338 MT_QUIRK_FIX_CONST_CONTACT_ID | 339 MT_QUIRK_IGNORE_DUPLICATES | 340 MT_QUIRK_HOVERING | 341 MT_QUIRK_CONTACT_CNT_ACCURATE }, 342 { .name = MT_CLS_ASUS, 343 .quirks = MT_QUIRK_ALWAYS_VALID | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_ASUS_CUSTOM_UP }, 346 { .name = MT_CLS_VTL, 347 .quirks = MT_QUIRK_ALWAYS_VALID | 348 MT_QUIRK_CONTACT_CNT_ACCURATE | 349 MT_QUIRK_FORCE_GET_FEATURE, 350 }, 351 { .name = MT_CLS_GOOGLE, 352 .quirks = MT_QUIRK_ALWAYS_VALID | 353 MT_QUIRK_CONTACT_CNT_ACCURATE | 354 MT_QUIRK_SLOT_IS_CONTACTID | 355 MT_QUIRK_HOVERING 356 }, 357 { .name = MT_CLS_RAZER_BLADE_STEALTH, 358 .quirks = MT_QUIRK_ALWAYS_VALID | 359 MT_QUIRK_IGNORE_DUPLICATES | 360 MT_QUIRK_HOVERING | 361 MT_QUIRK_CONTACT_CNT_ACCURATE | 362 MT_QUIRK_WIN8_PTP_BUTTONS, 363 }, 364 { .name = MT_CLS_SMART_TECH, 365 .quirks = MT_QUIRK_ALWAYS_VALID | 366 MT_QUIRK_IGNORE_DUPLICATES | 367 MT_QUIRK_CONTACT_CNT_ACCURATE | 368 MT_QUIRK_SEPARATE_APP_REPORT, 369 }, 370 { } 371}; 372 373static ssize_t mt_show_quirks(struct device *dev, 374 struct device_attribute *attr, 375 char *buf) 376{ 377 struct hid_device *hdev = to_hid_device(dev); 378 struct mt_device *td = hid_get_drvdata(hdev); 379 380 return sprintf(buf, "%u\n", td->mtclass.quirks); 381} 382 383static ssize_t mt_set_quirks(struct device *dev, 384 struct device_attribute *attr, 385 const char *buf, size_t count) 386{ 387 struct hid_device *hdev = to_hid_device(dev); 388 struct mt_device *td = hid_get_drvdata(hdev); 389 struct mt_application *application; 390 391 unsigned long val; 392 393 if (kstrtoul(buf, 0, &val)) 394 return -EINVAL; 395 396 td->mtclass.quirks = val; 397 398 list_for_each_entry(application, &td->applications, list) { 399 application->quirks = val; 400 if (!application->have_contact_count) 401 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 402 } 403 404 return count; 405} 406 407static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 408 409static struct attribute *sysfs_attrs[] = { 410 &dev_attr_quirks.attr, 411 NULL 412}; 413 414static const struct attribute_group mt_attribute_group = { 415 .attrs = sysfs_attrs 416}; 417 418static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 419{ 420 int ret; 421 u32 size = hid_report_len(report); 422 u8 *buf; 423 424 /* 425 * Do not fetch the feature report if the device has been explicitly 426 * marked as non-capable. 427 */ 428 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 429 return; 430 431 buf = hid_alloc_report_buf(report, GFP_KERNEL); 432 if (!buf) 433 return; 434 435 ret = hid_hw_raw_request(hdev, report->id, buf, size, 436 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 437 if (ret < 0) { 438 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 439 report->id); 440 } else { 441 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 442 size, 0); 443 if (ret) 444 dev_warn(&hdev->dev, "failed to report feature\n"); 445 } 446 447 kfree(buf); 448} 449 450static void mt_feature_mapping(struct hid_device *hdev, 451 struct hid_field *field, struct hid_usage *usage) 452{ 453 struct mt_device *td = hid_get_drvdata(hdev); 454 455 switch (usage->hid) { 456 case HID_DG_CONTACTMAX: 457 mt_get_feature(hdev, field->report); 458 459 td->maxcontacts = field->value[0]; 460 if (!td->maxcontacts && 461 field->logical_maximum <= MT_MAX_MAXCONTACT) 462 td->maxcontacts = field->logical_maximum; 463 if (td->mtclass.maxcontacts) 464 /* check if the maxcontacts is given by the class */ 465 td->maxcontacts = td->mtclass.maxcontacts; 466 467 break; 468 case HID_DG_BUTTONTYPE: 469 if (usage->usage_index >= field->report_count) { 470 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 471 break; 472 } 473 474 mt_get_feature(hdev, field->report); 475 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 476 td->is_buttonpad = true; 477 478 break; 479 case 0xff0000c5: 480 /* Retrieve the Win8 blob once to enable some devices */ 481 if (usage->usage_index == 0) 482 mt_get_feature(hdev, field->report); 483 break; 484 } 485} 486 487static void set_abs(struct input_dev *input, unsigned int code, 488 struct hid_field *field, int snratio) 489{ 490 int fmin = field->logical_minimum; 491 int fmax = field->logical_maximum; 492 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 493 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 494 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 495} 496 497static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 498 struct mt_application *application) 499{ 500 struct mt_usages *usage; 501 502 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 503 if (!usage) 504 return NULL; 505 506 /* set some defaults so we do not need to check for null pointers */ 507 usage->x = DEFAULT_ZERO; 508 usage->y = DEFAULT_ZERO; 509 usage->cx = DEFAULT_ZERO; 510 usage->cy = DEFAULT_ZERO; 511 usage->p = DEFAULT_ZERO; 512 usage->w = DEFAULT_ZERO; 513 usage->h = DEFAULT_ZERO; 514 usage->a = DEFAULT_ZERO; 515 usage->contactid = DEFAULT_ZERO; 516 usage->tip_state = DEFAULT_FALSE; 517 usage->inrange_state = DEFAULT_FALSE; 518 usage->confidence_state = DEFAULT_TRUE; 519 520 list_add_tail(&usage->list, &application->mt_usages); 521 522 return usage; 523} 524 525static struct mt_application *mt_allocate_application(struct mt_device *td, 526 struct hid_report *report) 527{ 528 unsigned int application = report->application; 529 struct mt_application *mt_application; 530 531 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 532 GFP_KERNEL); 533 if (!mt_application) 534 return NULL; 535 536 mt_application->application = application; 537 INIT_LIST_HEAD(&mt_application->mt_usages); 538 539 if (application == HID_DG_TOUCHSCREEN) 540 mt_application->mt_flags |= INPUT_MT_DIRECT; 541 542 /* 543 * Model touchscreens providing buttons as touchpads. 544 */ 545 if (application == HID_DG_TOUCHPAD) { 546 mt_application->mt_flags |= INPUT_MT_POINTER; 547 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 548 } 549 550 mt_application->scantime = DEFAULT_ZERO; 551 mt_application->raw_cc = DEFAULT_ZERO; 552 mt_application->quirks = td->mtclass.quirks; 553 mt_application->report_id = report->id; 554 555 list_add_tail(&mt_application->list, &td->applications); 556 557 return mt_application; 558} 559 560static struct mt_application *mt_find_application(struct mt_device *td, 561 struct hid_report *report) 562{ 563 unsigned int application = report->application; 564 struct mt_application *tmp, *mt_application = NULL; 565 566 list_for_each_entry(tmp, &td->applications, list) { 567 if (application == tmp->application) { 568 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 569 tmp->report_id == report->id) { 570 mt_application = tmp; 571 break; 572 } 573 } 574 } 575 576 if (!mt_application) 577 mt_application = mt_allocate_application(td, report); 578 579 return mt_application; 580} 581 582static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 583 struct hid_report *report) 584{ 585 struct mt_report_data *rdata; 586 struct hid_field *field; 587 int r, n; 588 589 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 590 if (!rdata) 591 return NULL; 592 593 rdata->report = report; 594 rdata->application = mt_find_application(td, report); 595 596 if (!rdata->application) { 597 devm_kfree(&td->hdev->dev, rdata); 598 return NULL; 599 } 600 601 for (r = 0; r < report->maxfield; r++) { 602 field = report->field[r]; 603 604 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 605 continue; 606 607 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 608 for (n = 0; n < field->report_count; n++) { 609 if (field->usage[n].hid == HID_DG_CONTACTID) { 610 rdata->is_mt_collection = true; 611 break; 612 } 613 } 614 } 615 } 616 617 list_add_tail(&rdata->list, &td->reports); 618 619 return rdata; 620} 621 622static struct mt_report_data *mt_find_report_data(struct mt_device *td, 623 struct hid_report *report) 624{ 625 struct mt_report_data *tmp, *rdata = NULL; 626 627 list_for_each_entry(tmp, &td->reports, list) { 628 if (report == tmp->report) { 629 rdata = tmp; 630 break; 631 } 632 } 633 634 if (!rdata) 635 rdata = mt_allocate_report_data(td, report); 636 637 return rdata; 638} 639 640static void mt_store_field(struct hid_device *hdev, 641 struct mt_application *application, 642 __s32 *value, 643 size_t offset) 644{ 645 struct mt_usages *usage; 646 __s32 **target; 647 648 if (list_empty(&application->mt_usages)) 649 usage = mt_allocate_usage(hdev, application); 650 else 651 usage = list_last_entry(&application->mt_usages, 652 struct mt_usages, 653 list); 654 655 if (!usage) 656 return; 657 658 target = (__s32 **)((char *)usage + offset); 659 660 /* the value has already been filled, create a new slot */ 661 if (*target != DEFAULT_TRUE && 662 *target != DEFAULT_FALSE && 663 *target != DEFAULT_ZERO) { 664 if (usage->contactid == DEFAULT_ZERO || 665 usage->x == DEFAULT_ZERO || 666 usage->y == DEFAULT_ZERO) { 667 hid_dbg(hdev, 668 "ignoring duplicate usage on incomplete"); 669 return; 670 } 671 usage = mt_allocate_usage(hdev, application); 672 if (!usage) 673 return; 674 675 target = (__s32 **)((char *)usage + offset); 676 } 677 678 *target = value; 679} 680 681#define MT_STORE_FIELD(__name) \ 682 mt_store_field(hdev, app, \ 683 &field->value[usage->usage_index], \ 684 offsetof(struct mt_usages, __name)) 685 686static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 687 struct hid_field *field, struct hid_usage *usage, 688 unsigned long **bit, int *max, struct mt_application *app) 689{ 690 struct mt_device *td = hid_get_drvdata(hdev); 691 struct mt_class *cls = &td->mtclass; 692 int code; 693 struct hid_usage *prev_usage = NULL; 694 695 /* 696 * Model touchscreens providing buttons as touchpads. 697 */ 698 if (field->application == HID_DG_TOUCHSCREEN && 699 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 700 app->mt_flags |= INPUT_MT_POINTER; 701 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 702 } 703 704 /* count the buttons on touchpads */ 705 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 706 app->buttons_count++; 707 708 if (usage->usage_index) 709 prev_usage = &field->usage[usage->usage_index - 1]; 710 711 switch (usage->hid & HID_USAGE_PAGE) { 712 713 case HID_UP_GENDESK: 714 switch (usage->hid) { 715 case HID_GD_X: 716 if (prev_usage && (prev_usage->hid == usage->hid)) { 717 code = ABS_MT_TOOL_X; 718 MT_STORE_FIELD(cx); 719 } else { 720 code = ABS_MT_POSITION_X; 721 MT_STORE_FIELD(x); 722 } 723 724 set_abs(hi->input, code, field, cls->sn_move); 725 726 /* 727 * A system multi-axis that exports X and Y has a high 728 * chance of being used directly on a surface 729 */ 730 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 731 __set_bit(INPUT_PROP_DIRECT, 732 hi->input->propbit); 733 input_set_abs_params(hi->input, 734 ABS_MT_TOOL_TYPE, 735 MT_TOOL_DIAL, 736 MT_TOOL_DIAL, 0, 0); 737 } 738 739 return 1; 740 case HID_GD_Y: 741 if (prev_usage && (prev_usage->hid == usage->hid)) { 742 code = ABS_MT_TOOL_Y; 743 MT_STORE_FIELD(cy); 744 } else { 745 code = ABS_MT_POSITION_Y; 746 MT_STORE_FIELD(y); 747 } 748 749 set_abs(hi->input, code, field, cls->sn_move); 750 751 return 1; 752 } 753 return 0; 754 755 case HID_UP_DIGITIZER: 756 switch (usage->hid) { 757 case HID_DG_INRANGE: 758 if (app->quirks & MT_QUIRK_HOVERING) { 759 input_set_abs_params(hi->input, 760 ABS_MT_DISTANCE, 0, 1, 0, 0); 761 } 762 MT_STORE_FIELD(inrange_state); 763 return 1; 764 case HID_DG_CONFIDENCE: 765 if ((cls->name == MT_CLS_WIN_8 || 766 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT) && 767 (field->application == HID_DG_TOUCHPAD || 768 field->application == HID_DG_TOUCHSCREEN)) 769 app->quirks |= MT_QUIRK_CONFIDENCE; 770 771 if (app->quirks & MT_QUIRK_CONFIDENCE) 772 input_set_abs_params(hi->input, 773 ABS_MT_TOOL_TYPE, 774 MT_TOOL_FINGER, 775 MT_TOOL_PALM, 0, 0); 776 777 MT_STORE_FIELD(confidence_state); 778 return 1; 779 case HID_DG_TIPSWITCH: 780 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 781 input_set_capability(hi->input, 782 EV_KEY, BTN_TOUCH); 783 MT_STORE_FIELD(tip_state); 784 return 1; 785 case HID_DG_CONTACTID: 786 MT_STORE_FIELD(contactid); 787 app->touches_by_report++; 788 return 1; 789 case HID_DG_WIDTH: 790 if (!(app->quirks & MT_QUIRK_NO_AREA)) 791 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 792 cls->sn_width); 793 MT_STORE_FIELD(w); 794 return 1; 795 case HID_DG_HEIGHT: 796 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 797 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 798 cls->sn_height); 799 800 /* 801 * Only set ABS_MT_ORIENTATION if it is not 802 * already set by the HID_DG_AZIMUTH usage. 803 */ 804 if (!test_bit(ABS_MT_ORIENTATION, 805 hi->input->absbit)) 806 input_set_abs_params(hi->input, 807 ABS_MT_ORIENTATION, 0, 1, 0, 0); 808 } 809 MT_STORE_FIELD(h); 810 return 1; 811 case HID_DG_TIPPRESSURE: 812 set_abs(hi->input, ABS_MT_PRESSURE, field, 813 cls->sn_pressure); 814 MT_STORE_FIELD(p); 815 return 1; 816 case HID_DG_SCANTIME: 817 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 818 app->scantime = &field->value[usage->usage_index]; 819 app->scantime_logical_max = field->logical_maximum; 820 return 1; 821 case HID_DG_CONTACTCOUNT: 822 app->have_contact_count = true; 823 app->raw_cc = &field->value[usage->usage_index]; 824 return 1; 825 case HID_DG_AZIMUTH: 826 /* 827 * Azimuth has the range of [0, MAX) representing a full 828 * revolution. Set ABS_MT_ORIENTATION to a quarter of 829 * MAX according the definition of ABS_MT_ORIENTATION 830 */ 831 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 832 -field->logical_maximum / 4, 833 field->logical_maximum / 4, 834 cls->sn_move ? 835 field->logical_maximum / cls->sn_move : 0, 0); 836 MT_STORE_FIELD(a); 837 return 1; 838 case HID_DG_CONTACTMAX: 839 /* contact max are global to the report */ 840 return -1; 841 case HID_DG_TOUCH: 842 /* Legacy devices use TIPSWITCH and not TOUCH. 843 * Let's just ignore this field. */ 844 return -1; 845 } 846 /* let hid-input decide for the others */ 847 return 0; 848 849 case HID_UP_BUTTON: 850 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 851 /* 852 * MS PTP spec says that external buttons left and right have 853 * usages 2 and 3. 854 */ 855 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 856 field->application == HID_DG_TOUCHPAD && 857 (usage->hid & HID_USAGE) > 1) 858 code--; 859 860 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 861 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 862 863 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 864 if (!*bit) 865 return -1; 866 input_set_capability(hi->input, EV_KEY, code); 867 return 1; 868 869 case 0xff000000: 870 /* we do not want to map these: no input-oriented meaning */ 871 return -1; 872 } 873 874 return 0; 875} 876 877static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 878 struct mt_usages *slot, 879 struct input_dev *input) 880{ 881 __s32 quirks = app->quirks; 882 883 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 884 return *slot->contactid; 885 886 if (quirks & MT_QUIRK_CYPRESS) 887 return cypress_compute_slot(app, slot); 888 889 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 890 return app->num_received; 891 892 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 893 return *slot->contactid - 1; 894 895 return input_mt_get_slot_by_key(input, *slot->contactid); 896} 897 898static void mt_release_pending_palms(struct mt_device *td, 899 struct mt_application *app, 900 struct input_dev *input) 901{ 902 int slotnum; 903 bool need_sync = false; 904 905 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 906 clear_bit(slotnum, app->pending_palm_slots); 907 908 input_mt_slot(input, slotnum); 909 input_mt_report_slot_inactive(input); 910 911 need_sync = true; 912 } 913 914 if (need_sync) { 915 input_mt_sync_frame(input); 916 input_sync(input); 917 } 918} 919 920/* 921 * this function is called when a whole packet has been received and processed, 922 * so that it can decide what to send to the input layer. 923 */ 924static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 925 struct input_dev *input) 926{ 927 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 928 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 929 930 input_mt_sync_frame(input); 931 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 932 input_sync(input); 933 934 mt_release_pending_palms(td, app, input); 935 936 app->num_received = 0; 937 app->left_button_state = 0; 938 939 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 940 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 941 else 942 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 943 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 944} 945 946static int mt_compute_timestamp(struct mt_application *app, __s32 value) 947{ 948 long delta = value - app->prev_scantime; 949 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 950 951 app->jiffies = jiffies; 952 953 if (delta < 0) 954 delta += app->scantime_logical_max; 955 956 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 957 delta *= 100; 958 959 if (jdelta > MAX_TIMESTAMP_INTERVAL) 960 /* No data received for a while, resync the timestamp. */ 961 return 0; 962 else 963 return app->timestamp + delta; 964} 965 966static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 967 struct hid_usage *usage, __s32 value) 968{ 969 /* we will handle the hidinput part later, now remains hiddev */ 970 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 971 hid->hiddev_hid_event(hid, field, usage, value); 972 973 return 1; 974} 975 976static int mt_process_slot(struct mt_device *td, struct input_dev *input, 977 struct mt_application *app, 978 struct mt_usages *slot) 979{ 980 struct input_mt *mt = input->mt; 981 __s32 quirks = app->quirks; 982 bool valid = true; 983 bool confidence_state = true; 984 bool inrange_state = false; 985 int active; 986 int slotnum; 987 int tool = MT_TOOL_FINGER; 988 989 if (!slot) 990 return -EINVAL; 991 992 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 993 app->num_received >= app->num_expected) 994 return -EAGAIN; 995 996 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 997 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 998 valid = *slot->inrange_state; 999 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1000 valid = *slot->tip_state; 1001 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1002 valid = *slot->confidence_state; 1003 1004 if (!valid) 1005 return 0; 1006 } 1007 1008 slotnum = mt_compute_slot(td, app, slot, input); 1009 if (slotnum < 0 || slotnum >= td->maxcontacts) 1010 return 0; 1011 1012 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1013 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1014 1015 if (input_mt_is_active(i_slot) && 1016 input_mt_is_used(mt, i_slot)) 1017 return -EAGAIN; 1018 } 1019 1020 if (quirks & MT_QUIRK_CONFIDENCE) 1021 confidence_state = *slot->confidence_state; 1022 1023 if (quirks & MT_QUIRK_HOVERING) 1024 inrange_state = *slot->inrange_state; 1025 1026 active = *slot->tip_state || inrange_state; 1027 1028 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1029 tool = MT_TOOL_DIAL; 1030 else if (unlikely(!confidence_state)) { 1031 tool = MT_TOOL_PALM; 1032 if (!active && mt && 1033 input_mt_is_active(&mt->slots[slotnum])) { 1034 /* 1035 * The non-confidence was reported for 1036 * previously valid contact that is also no 1037 * longer valid. We can't simply report 1038 * lift-off as userspace will not be aware 1039 * of non-confidence, so we need to split 1040 * it into 2 events: active MT_TOOL_PALM 1041 * and a separate liftoff. 1042 */ 1043 active = true; 1044 set_bit(slotnum, app->pending_palm_slots); 1045 } 1046 } 1047 1048 input_mt_slot(input, slotnum); 1049 input_mt_report_slot_state(input, tool, active); 1050 if (active) { 1051 /* this finger is in proximity of the sensor */ 1052 int wide = (*slot->w > *slot->h); 1053 int major = max(*slot->w, *slot->h); 1054 int minor = min(*slot->w, *slot->h); 1055 int orientation = wide; 1056 int max_azimuth; 1057 int azimuth; 1058 1059 if (slot->a != DEFAULT_ZERO) { 1060 /* 1061 * Azimuth is counter-clockwise and ranges from [0, MAX) 1062 * (a full revolution). Convert it to clockwise ranging 1063 * [-MAX/2, MAX/2]. 1064 * 1065 * Note that ABS_MT_ORIENTATION require us to report 1066 * the limit of [-MAX/4, MAX/4], but the value can go 1067 * out of range to [-MAX/2, MAX/2] to report an upside 1068 * down ellipsis. 1069 */ 1070 azimuth = *slot->a; 1071 max_azimuth = input_abs_get_max(input, 1072 ABS_MT_ORIENTATION); 1073 if (azimuth > max_azimuth * 2) 1074 azimuth -= max_azimuth * 4; 1075 orientation = -azimuth; 1076 } 1077 1078 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1079 /* 1080 * divided by two to match visual scale of touch 1081 * for devices with this quirk 1082 */ 1083 major = major >> 1; 1084 minor = minor >> 1; 1085 } 1086 1087 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1088 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1089 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1090 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1091 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1092 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1093 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1094 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1095 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1096 1097 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1098 } 1099 1100 return 0; 1101} 1102 1103static void mt_process_mt_event(struct hid_device *hid, 1104 struct mt_application *app, 1105 struct hid_field *field, 1106 struct hid_usage *usage, 1107 __s32 value, 1108 bool first_packet) 1109{ 1110 __s32 quirks = app->quirks; 1111 struct input_dev *input = field->hidinput->input; 1112 1113 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1114 return; 1115 1116 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1117 1118 /* 1119 * For Win8 PTP touchpads we should only look at 1120 * non finger/touch events in the first_packet of a 1121 * (possible) multi-packet frame. 1122 */ 1123 if (!first_packet) 1124 return; 1125 1126 /* 1127 * For Win8 PTP touchpads we map both the clickpad click 1128 * and any "external" left buttons to BTN_LEFT if a 1129 * device claims to have both we need to report 1 for 1130 * BTN_LEFT if either is pressed, so we or all values 1131 * together and report the result in mt_sync_frame(). 1132 */ 1133 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1134 app->left_button_state |= value; 1135 return; 1136 } 1137 } 1138 1139 input_event(input, usage->type, usage->code, value); 1140} 1141 1142static void mt_touch_report(struct hid_device *hid, 1143 struct mt_report_data *rdata) 1144{ 1145 struct mt_device *td = hid_get_drvdata(hid); 1146 struct hid_report *report = rdata->report; 1147 struct mt_application *app = rdata->application; 1148 struct hid_field *field; 1149 struct input_dev *input; 1150 struct mt_usages *slot; 1151 bool first_packet; 1152 unsigned count; 1153 int r, n; 1154 int scantime = 0; 1155 int contact_count = -1; 1156 1157 /* sticky fingers release in progress, abort */ 1158 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1159 return; 1160 1161 scantime = *app->scantime; 1162 app->timestamp = mt_compute_timestamp(app, scantime); 1163 if (app->raw_cc != DEFAULT_ZERO) 1164 contact_count = *app->raw_cc; 1165 1166 /* 1167 * Includes multi-packet support where subsequent 1168 * packets are sent with zero contactcount. 1169 */ 1170 if (contact_count >= 0) { 1171 /* 1172 * For Win8 PTPs the first packet (td->num_received == 0) may 1173 * have a contactcount of 0 if there only is a button event. 1174 * We double check that this is not a continuation packet 1175 * of a possible multi-packet frame be checking that the 1176 * timestamp has changed. 1177 */ 1178 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1179 app->num_received == 0 && 1180 app->prev_scantime != scantime) 1181 app->num_expected = contact_count; 1182 /* A non 0 contact count always indicates a first packet */ 1183 else if (contact_count) 1184 app->num_expected = contact_count; 1185 } 1186 app->prev_scantime = scantime; 1187 1188 first_packet = app->num_received == 0; 1189 1190 input = report->field[0]->hidinput->input; 1191 1192 list_for_each_entry(slot, &app->mt_usages, list) { 1193 if (!mt_process_slot(td, input, app, slot)) 1194 app->num_received++; 1195 } 1196 1197 for (r = 0; r < report->maxfield; r++) { 1198 field = report->field[r]; 1199 count = field->report_count; 1200 1201 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1202 continue; 1203 1204 for (n = 0; n < count; n++) 1205 mt_process_mt_event(hid, app, field, 1206 &field->usage[n], field->value[n], 1207 first_packet); 1208 } 1209 1210 if (app->num_received >= app->num_expected) 1211 mt_sync_frame(td, app, input); 1212 1213 /* 1214 * Windows 8 specs says 2 things: 1215 * - once a contact has been reported, it has to be reported in each 1216 * subsequent report 1217 * - the report rate when fingers are present has to be at least 1218 * the refresh rate of the screen, 60 or 120 Hz 1219 * 1220 * I interprete this that the specification forces a report rate of 1221 * at least 60 Hz for a touchscreen to be certified. 1222 * Which means that if we do not get a report whithin 16 ms, either 1223 * something wrong happens, either the touchscreen forgets to send 1224 * a release. Taking a reasonable margin allows to remove issues 1225 * with USB communication or the load of the machine. 1226 * 1227 * Given that Win 8 devices are forced to send a release, this will 1228 * only affect laggish machines and the ones that have a firmware 1229 * defect. 1230 */ 1231 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1232 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1233 mod_timer(&td->release_timer, 1234 jiffies + msecs_to_jiffies(100)); 1235 else 1236 del_timer(&td->release_timer); 1237 } 1238 1239 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1240} 1241 1242static int mt_touch_input_configured(struct hid_device *hdev, 1243 struct hid_input *hi, 1244 struct mt_application *app) 1245{ 1246 struct mt_device *td = hid_get_drvdata(hdev); 1247 struct mt_class *cls = &td->mtclass; 1248 struct input_dev *input = hi->input; 1249 int ret; 1250 1251 if (!td->maxcontacts) 1252 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1253 1254 mt_post_parse(td, app); 1255 if (td->serial_maybe) 1256 mt_post_parse_default_settings(td, app); 1257 1258 if (cls->is_indirect) 1259 app->mt_flags |= INPUT_MT_POINTER; 1260 1261 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1262 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1263 1264 /* check for clickpads */ 1265 if ((app->mt_flags & INPUT_MT_POINTER) && 1266 (app->buttons_count == 1)) 1267 td->is_buttonpad = true; 1268 1269 if (td->is_buttonpad) 1270 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1271 1272 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1273 BITS_TO_LONGS(td->maxcontacts), 1274 sizeof(long), 1275 GFP_KERNEL); 1276 if (!app->pending_palm_slots) 1277 return -ENOMEM; 1278 1279 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1280 if (ret) 1281 return ret; 1282 1283 app->mt_flags = 0; 1284 return 0; 1285} 1286 1287#define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1288 max, EV_KEY, (c)) 1289static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1290 struct hid_field *field, struct hid_usage *usage, 1291 unsigned long **bit, int *max) 1292{ 1293 struct mt_device *td = hid_get_drvdata(hdev); 1294 struct mt_application *application; 1295 struct mt_report_data *rdata; 1296 1297 rdata = mt_find_report_data(td, field->report); 1298 if (!rdata) { 1299 hid_err(hdev, "failed to allocate data for report\n"); 1300 return 0; 1301 } 1302 1303 application = rdata->application; 1304 1305 /* 1306 * If mtclass.export_all_inputs is not set, only map fields from 1307 * TouchScreen or TouchPad collections. We need to ignore fields 1308 * that belong to other collections such as Mouse that might have 1309 * the same GenericDesktop usages. 1310 */ 1311 if (!td->mtclass.export_all_inputs && 1312 field->application != HID_DG_TOUCHSCREEN && 1313 field->application != HID_DG_PEN && 1314 field->application != HID_DG_TOUCHPAD && 1315 field->application != HID_GD_KEYBOARD && 1316 field->application != HID_GD_SYSTEM_CONTROL && 1317 field->application != HID_CP_CONSUMER_CONTROL && 1318 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1319 field->application != HID_GD_SYSTEM_MULTIAXIS && 1320 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1321 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1322 return -1; 1323 1324 /* 1325 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1326 * touchpad report descriptor. We need to treat these as an array to 1327 * map usages to input keys. 1328 */ 1329 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1330 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1331 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1332 set_bit(EV_REP, hi->input->evbit); 1333 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1334 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1335 switch (usage->hid & HID_USAGE) { 1336 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1337 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1338 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1339 case 0x6b: mt_map_key_clear(KEY_F21); break; 1340 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1341 default: 1342 return -1; 1343 } 1344 return 1; 1345 } 1346 1347 if (rdata->is_mt_collection) 1348 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1349 application); 1350 1351 /* 1352 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1353 * for the stylus. Overwrite the hid_input application 1354 */ 1355 if (field->physical == HID_DG_STYLUS) 1356 hi->application = HID_DG_STYLUS; 1357 1358 /* let hid-core decide for the others */ 1359 return 0; 1360} 1361 1362static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1363 struct hid_field *field, struct hid_usage *usage, 1364 unsigned long **bit, int *max) 1365{ 1366 struct mt_device *td = hid_get_drvdata(hdev); 1367 struct mt_report_data *rdata; 1368 1369 rdata = mt_find_report_data(td, field->report); 1370 if (rdata && rdata->is_mt_collection) { 1371 /* We own these mappings, tell hid-input to ignore them */ 1372 return -1; 1373 } 1374 1375 /* let hid-core decide for the others */ 1376 return 0; 1377} 1378 1379static int mt_event(struct hid_device *hid, struct hid_field *field, 1380 struct hid_usage *usage, __s32 value) 1381{ 1382 struct mt_device *td = hid_get_drvdata(hid); 1383 struct mt_report_data *rdata; 1384 1385 rdata = mt_find_report_data(td, field->report); 1386 if (rdata && rdata->is_mt_collection) 1387 return mt_touch_event(hid, field, usage, value); 1388 1389 return 0; 1390} 1391 1392static void mt_report(struct hid_device *hid, struct hid_report *report) 1393{ 1394 struct mt_device *td = hid_get_drvdata(hid); 1395 struct hid_field *field = report->field[0]; 1396 struct mt_report_data *rdata; 1397 1398 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1399 return; 1400 1401 rdata = mt_find_report_data(td, report); 1402 if (rdata && rdata->is_mt_collection) 1403 return mt_touch_report(hid, rdata); 1404 1405 if (field && field->hidinput && field->hidinput->input) 1406 input_sync(field->hidinput->input); 1407} 1408 1409static bool mt_need_to_apply_feature(struct hid_device *hdev, 1410 struct hid_field *field, 1411 struct hid_usage *usage, 1412 enum latency_mode latency, 1413 bool surface_switch, 1414 bool button_switch, 1415 bool *inputmode_found) 1416{ 1417 struct mt_device *td = hid_get_drvdata(hdev); 1418 struct mt_class *cls = &td->mtclass; 1419 struct hid_report *report = field->report; 1420 unsigned int index = usage->usage_index; 1421 char *buf; 1422 u32 report_len; 1423 int max; 1424 1425 switch (usage->hid) { 1426 case HID_DG_INPUTMODE: 1427 /* 1428 * Some elan panels wrongly declare 2 input mode features, 1429 * and silently ignore when we set the value in the second 1430 * field. Skip the second feature and hope for the best. 1431 */ 1432 if (*inputmode_found) 1433 return false; 1434 1435 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1436 report_len = hid_report_len(report); 1437 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1438 if (!buf) { 1439 hid_err(hdev, 1440 "failed to allocate buffer for report\n"); 1441 return false; 1442 } 1443 hid_hw_raw_request(hdev, report->id, buf, report_len, 1444 HID_FEATURE_REPORT, 1445 HID_REQ_GET_REPORT); 1446 kfree(buf); 1447 } 1448 1449 field->value[index] = td->inputmode_value; 1450 *inputmode_found = true; 1451 return true; 1452 1453 case HID_DG_CONTACTMAX: 1454 if (cls->maxcontacts) { 1455 max = min_t(int, field->logical_maximum, 1456 cls->maxcontacts); 1457 if (field->value[index] != max) { 1458 field->value[index] = max; 1459 return true; 1460 } 1461 } 1462 break; 1463 1464 case HID_DG_LATENCYMODE: 1465 field->value[index] = latency; 1466 return true; 1467 1468 case HID_DG_SURFACESWITCH: 1469 field->value[index] = surface_switch; 1470 return true; 1471 1472 case HID_DG_BUTTONSWITCH: 1473 field->value[index] = button_switch; 1474 return true; 1475 } 1476 1477 return false; /* no need to update the report */ 1478} 1479 1480static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1481 bool surface_switch, bool button_switch) 1482{ 1483 struct hid_report_enum *rep_enum; 1484 struct hid_report *rep; 1485 struct hid_usage *usage; 1486 int i, j; 1487 bool update_report; 1488 bool inputmode_found = false; 1489 1490 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1491 list_for_each_entry(rep, &rep_enum->report_list, list) { 1492 update_report = false; 1493 1494 for (i = 0; i < rep->maxfield; i++) { 1495 /* Ignore if report count is out of bounds. */ 1496 if (rep->field[i]->report_count < 1) 1497 continue; 1498 1499 for (j = 0; j < rep->field[i]->maxusage; j++) { 1500 usage = &rep->field[i]->usage[j]; 1501 1502 if (mt_need_to_apply_feature(hdev, 1503 rep->field[i], 1504 usage, 1505 latency, 1506 surface_switch, 1507 button_switch, 1508 &inputmode_found)) 1509 update_report = true; 1510 } 1511 } 1512 1513 if (update_report) 1514 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1515 } 1516} 1517 1518static void mt_post_parse_default_settings(struct mt_device *td, 1519 struct mt_application *app) 1520{ 1521 __s32 quirks = app->quirks; 1522 1523 /* unknown serial device needs special quirks */ 1524 if (list_is_singular(&app->mt_usages)) { 1525 quirks |= MT_QUIRK_ALWAYS_VALID; 1526 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1527 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1528 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1529 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1530 } 1531 1532 app->quirks = quirks; 1533} 1534 1535static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1536{ 1537 if (!app->have_contact_count) 1538 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1539} 1540 1541static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1542{ 1543 struct mt_device *td = hid_get_drvdata(hdev); 1544 const char *suffix = NULL; 1545 struct mt_report_data *rdata; 1546 struct mt_application *mt_application = NULL; 1547 struct hid_report *report; 1548 int ret; 1549 1550 list_for_each_entry(report, &hi->reports, hidinput_list) { 1551 rdata = mt_find_report_data(td, report); 1552 if (!rdata) { 1553 hid_err(hdev, "failed to allocate data for report\n"); 1554 return -ENOMEM; 1555 } 1556 1557 mt_application = rdata->application; 1558 1559 if (rdata->is_mt_collection) { 1560 ret = mt_touch_input_configured(hdev, hi, 1561 mt_application); 1562 if (ret) 1563 return ret; 1564 } 1565 } 1566 1567 switch (hi->application) { 1568 case HID_GD_KEYBOARD: 1569 case HID_GD_KEYPAD: 1570 case HID_GD_MOUSE: 1571 case HID_DG_TOUCHPAD: 1572 case HID_GD_SYSTEM_CONTROL: 1573 case HID_CP_CONSUMER_CONTROL: 1574 case HID_GD_WIRELESS_RADIO_CTLS: 1575 case HID_GD_SYSTEM_MULTIAXIS: 1576 /* already handled by hid core */ 1577 break; 1578 case HID_DG_TOUCHSCREEN: 1579 /* we do not set suffix = "Touchscreen" */ 1580 hi->input->name = hdev->name; 1581 break; 1582 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1583 suffix = "Custom Media Keys"; 1584 break; 1585 case HID_DG_STYLUS: 1586 /* force BTN_STYLUS to allow tablet matching in udev */ 1587 __set_bit(BTN_STYLUS, hi->input->keybit); 1588 fallthrough; 1589 case HID_DG_PEN: 1590 suffix = "Stylus"; 1591 break; 1592 default: 1593 suffix = "UNKNOWN"; 1594 break; 1595 } 1596 1597 if (suffix) 1598 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1599 "%s %s", hdev->name, suffix); 1600 1601 return 0; 1602} 1603 1604static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1605{ 1606 if (field->usage[0].hid != usage || 1607 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1608 return; 1609 1610 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1611 field->flags |= HID_MAIN_ITEM_VARIABLE; 1612} 1613 1614static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1615{ 1616 struct hid_report *report; 1617 int i; 1618 1619 list_for_each_entry(report, 1620 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1621 list) { 1622 1623 if (!report->maxfield) 1624 continue; 1625 1626 for (i = 0; i < report->maxfield; i++) 1627 if (report->field[i]->maxusage >= 1) 1628 mt_fix_const_field(report->field[i], usage); 1629 } 1630} 1631 1632static void mt_release_contacts(struct hid_device *hid) 1633{ 1634 struct hid_input *hidinput; 1635 struct mt_application *application; 1636 struct mt_device *td = hid_get_drvdata(hid); 1637 1638 list_for_each_entry(hidinput, &hid->inputs, list) { 1639 struct input_dev *input_dev = hidinput->input; 1640 struct input_mt *mt = input_dev->mt; 1641 int i; 1642 1643 if (mt) { 1644 for (i = 0; i < mt->num_slots; i++) { 1645 input_mt_slot(input_dev, i); 1646 input_mt_report_slot_inactive(input_dev); 1647 } 1648 input_mt_sync_frame(input_dev); 1649 input_sync(input_dev); 1650 } 1651 } 1652 1653 list_for_each_entry(application, &td->applications, list) { 1654 application->num_received = 0; 1655 } 1656} 1657 1658static void mt_expired_timeout(struct timer_list *t) 1659{ 1660 struct mt_device *td = from_timer(td, t, release_timer); 1661 struct hid_device *hdev = td->hdev; 1662 1663 /* 1664 * An input report came in just before we release the sticky fingers, 1665 * it will take care of the sticky fingers. 1666 */ 1667 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1668 return; 1669 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1670 mt_release_contacts(hdev); 1671 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1672} 1673 1674static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1675{ 1676 int ret, i; 1677 struct mt_device *td; 1678 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1679 1680 for (i = 0; mt_classes[i].name ; i++) { 1681 if (id->driver_data == mt_classes[i].name) { 1682 mtclass = &(mt_classes[i]); 1683 break; 1684 } 1685 } 1686 1687 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1688 if (!td) { 1689 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1690 return -ENOMEM; 1691 } 1692 td->hdev = hdev; 1693 td->mtclass = *mtclass; 1694 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1695 hid_set_drvdata(hdev, td); 1696 1697 INIT_LIST_HEAD(&td->applications); 1698 INIT_LIST_HEAD(&td->reports); 1699 1700 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1701 td->serial_maybe = true; 1702 1703 /* This allows the driver to correctly support devices 1704 * that emit events over several HID messages. 1705 */ 1706 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1707 1708 /* 1709 * This allows the driver to handle different input sensors 1710 * that emits events through different applications on the same HID 1711 * device. 1712 */ 1713 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1714 1715 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1716 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1717 1718 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1719 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1720 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1721 } 1722 1723 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1724 1725 ret = hid_parse(hdev); 1726 if (ret != 0) 1727 return ret; 1728 1729 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1730 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1731 1732 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1733 if (ret) 1734 return ret; 1735 1736 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1737 if (ret) 1738 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1739 hdev->name); 1740 1741 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1742 1743 return 0; 1744} 1745 1746#ifdef CONFIG_PM 1747static int mt_reset_resume(struct hid_device *hdev) 1748{ 1749 mt_release_contacts(hdev); 1750 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1751 return 0; 1752} 1753 1754static int mt_resume(struct hid_device *hdev) 1755{ 1756 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1757 * It should be safe to send it to other devices too. 1758 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1759 1760 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1761 1762 return 0; 1763} 1764#endif 1765 1766static void mt_remove(struct hid_device *hdev) 1767{ 1768 struct mt_device *td = hid_get_drvdata(hdev); 1769 1770 del_timer_sync(&td->release_timer); 1771 1772 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1773 hid_hw_stop(hdev); 1774} 1775 1776/* 1777 * This list contains only: 1778 * - VID/PID of products not working with the default multitouch handling 1779 * - 2 generic rules. 1780 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1781 */ 1782static const struct hid_device_id mt_devices[] = { 1783 1784 /* 3M panels */ 1785 { .driver_data = MT_CLS_3M, 1786 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1787 USB_DEVICE_ID_3M1968) }, 1788 { .driver_data = MT_CLS_3M, 1789 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1790 USB_DEVICE_ID_3M2256) }, 1791 { .driver_data = MT_CLS_3M, 1792 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1793 USB_DEVICE_ID_3M3266) }, 1794 1795 /* Anton devices */ 1796 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1797 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1798 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1799 1800 /* Asus T304UA */ 1801 { .driver_data = MT_CLS_ASUS, 1802 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1803 USB_VENDOR_ID_ASUSTEK, 1804 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1805 1806 /* Atmel panels */ 1807 { .driver_data = MT_CLS_SERIAL, 1808 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1809 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1810 1811 /* Baanto multitouch devices */ 1812 { .driver_data = MT_CLS_NSMU, 1813 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1814 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1815 1816 /* Cando panels */ 1817 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1818 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1819 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1820 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1821 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1822 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1823 1824 /* Chunghwa Telecom touch panels */ 1825 { .driver_data = MT_CLS_NSMU, 1826 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1827 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1828 1829 /* CJTouch panels */ 1830 { .driver_data = MT_CLS_NSMU, 1831 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1832 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1833 { .driver_data = MT_CLS_NSMU, 1834 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1835 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1836 1837 /* CVTouch panels */ 1838 { .driver_data = MT_CLS_NSMU, 1839 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1840 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1841 1842 /* eGalax devices (resistive) */ 1843 { .driver_data = MT_CLS_EGALAX, 1844 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1845 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1846 { .driver_data = MT_CLS_EGALAX, 1847 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1848 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1849 1850 /* eGalax devices (capacitive) */ 1851 { .driver_data = MT_CLS_EGALAX_SERIAL, 1852 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1853 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1854 { .driver_data = MT_CLS_EGALAX, 1855 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1856 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1857 { .driver_data = MT_CLS_EGALAX_SERIAL, 1858 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1859 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1860 { .driver_data = MT_CLS_EGALAX_SERIAL, 1861 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1862 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1863 { .driver_data = MT_CLS_EGALAX_SERIAL, 1864 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1865 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1866 { .driver_data = MT_CLS_EGALAX_SERIAL, 1867 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1868 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1869 { .driver_data = MT_CLS_EGALAX, 1870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1872 { .driver_data = MT_CLS_EGALAX, 1873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1875 { .driver_data = MT_CLS_EGALAX_SERIAL, 1876 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1877 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1878 { .driver_data = MT_CLS_EGALAX, 1879 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1880 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1881 { .driver_data = MT_CLS_EGALAX, 1882 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1883 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1884 { .driver_data = MT_CLS_EGALAX, 1885 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1886 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1887 { .driver_data = MT_CLS_EGALAX, 1888 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1889 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1890 { .driver_data = MT_CLS_EGALAX_SERIAL, 1891 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1892 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1893 { .driver_data = MT_CLS_EGALAX_SERIAL, 1894 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1895 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1896 { .driver_data = MT_CLS_EGALAX_SERIAL, 1897 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1898 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1899 { .driver_data = MT_CLS_EGALAX, 1900 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1901 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 1902 1903 /* Elan devices */ 1904 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1905 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1906 USB_VENDOR_ID_ELAN, 0x313a) }, 1907 1908 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1909 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1910 USB_VENDOR_ID_ELAN, 0x3148) }, 1911 1912 /* Elitegroup panel */ 1913 { .driver_data = MT_CLS_SERIAL, 1914 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1915 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1916 1917 /* Flatfrog Panels */ 1918 { .driver_data = MT_CLS_FLATFROG, 1919 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1920 USB_DEVICE_ID_MULTITOUCH_3200) }, 1921 1922 /* FocalTech Panels */ 1923 { .driver_data = MT_CLS_SERIAL, 1924 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1925 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1926 1927 /* GeneralTouch panel */ 1928 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1929 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1930 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1931 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1932 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1933 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1934 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1935 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1936 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1937 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1938 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1939 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1940 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1941 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1942 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1943 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1944 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1945 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1946 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1947 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1948 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1949 1950 /* Gametel game controller */ 1951 { .driver_data = MT_CLS_NSMU, 1952 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1953 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1954 1955 /* GoodTouch panels */ 1956 { .driver_data = MT_CLS_NSMU, 1957 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1958 USB_DEVICE_ID_GOODTOUCH_000f) }, 1959 1960 /* Hanvon panels */ 1961 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1962 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1963 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1964 1965 /* HONOR GLO-GXXX panel */ 1966 { .driver_data = MT_CLS_VTL, 1967 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1968 0x347d, 0x7853) }, 1969 1970 /* Ilitek dual touch panel */ 1971 { .driver_data = MT_CLS_NSMU, 1972 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1973 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1974 1975 /* LG Melfas panel */ 1976 { .driver_data = MT_CLS_LG, 1977 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1978 USB_DEVICE_ID_LG_MELFAS_MT) }, 1979 { .driver_data = MT_CLS_LG, 1980 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 1981 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 1982 1983 /* Lenovo X1 TAB Gen 2 */ 1984 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1985 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1986 USB_VENDOR_ID_LENOVO, 1987 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1988 1989 /* Lenovo X1 TAB Gen 3 */ 1990 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1991 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1992 USB_VENDOR_ID_LENOVO, 1993 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 1994 1995 /* Lenovo X12 TAB Gen 1 */ 1996 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1997 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1998 USB_VENDOR_ID_LENOVO, 1999 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2000 2001 /* MosArt panels */ 2002 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2003 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2004 USB_DEVICE_ID_ASUS_T91MT)}, 2005 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2006 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2007 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2008 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2009 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2010 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2011 2012 /* Novatek Panel */ 2013 { .driver_data = MT_CLS_NSMU, 2014 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2015 USB_DEVICE_ID_NOVATEK_PCT) }, 2016 2017 /* Ntrig Panel */ 2018 { .driver_data = MT_CLS_NSMU, 2019 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2020 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2021 2022 /* Panasonic panels */ 2023 { .driver_data = MT_CLS_PANASONIC, 2024 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2025 USB_DEVICE_ID_PANABOARD_UBT780) }, 2026 { .driver_data = MT_CLS_PANASONIC, 2027 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2028 USB_DEVICE_ID_PANABOARD_UBT880) }, 2029 2030 /* PixArt optical touch screen */ 2031 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2032 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2033 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2034 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2035 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2036 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2037 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2038 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2039 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2040 2041 /* PixCir-based panels */ 2042 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2043 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2044 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2045 2046 /* Quanta-based panels */ 2047 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2048 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2049 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2050 2051 /* Razer touchpads */ 2052 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2053 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2054 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2055 2056 /* Smart Tech panels */ 2057 { .driver_data = MT_CLS_SMART_TECH, 2058 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2059 2060 /* Stantum panels */ 2061 { .driver_data = MT_CLS_CONFIDENCE, 2062 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2063 USB_DEVICE_ID_MTP_STM)}, 2064 2065 /* Synaptics devices */ 2066 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2067 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2068 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2069 2070 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2071 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2072 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2073 2074 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2075 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2076 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2077 2078 /* TopSeed panels */ 2079 { .driver_data = MT_CLS_TOPSEED, 2080 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2081 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2082 2083 /* Touch International panels */ 2084 { .driver_data = MT_CLS_NSMU, 2085 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2086 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2087 2088 /* Unitec panels */ 2089 { .driver_data = MT_CLS_NSMU, 2090 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2091 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2092 { .driver_data = MT_CLS_NSMU, 2093 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2094 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2095 2096 /* VTL panels */ 2097 { .driver_data = MT_CLS_VTL, 2098 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2099 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2100 2101 /* Wistron panels */ 2102 { .driver_data = MT_CLS_NSMU, 2103 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2104 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2105 2106 /* XAT */ 2107 { .driver_data = MT_CLS_NSMU, 2108 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2109 USB_DEVICE_ID_XAT_CSR) }, 2110 2111 /* Xiroku */ 2112 { .driver_data = MT_CLS_NSMU, 2113 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2114 USB_DEVICE_ID_XIROKU_SPX) }, 2115 { .driver_data = MT_CLS_NSMU, 2116 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2117 USB_DEVICE_ID_XIROKU_MPX) }, 2118 { .driver_data = MT_CLS_NSMU, 2119 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2120 USB_DEVICE_ID_XIROKU_CSR) }, 2121 { .driver_data = MT_CLS_NSMU, 2122 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2123 USB_DEVICE_ID_XIROKU_SPX1) }, 2124 { .driver_data = MT_CLS_NSMU, 2125 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2126 USB_DEVICE_ID_XIROKU_MPX1) }, 2127 { .driver_data = MT_CLS_NSMU, 2128 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2129 USB_DEVICE_ID_XIROKU_CSR1) }, 2130 { .driver_data = MT_CLS_NSMU, 2131 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2132 USB_DEVICE_ID_XIROKU_SPX2) }, 2133 { .driver_data = MT_CLS_NSMU, 2134 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2135 USB_DEVICE_ID_XIROKU_MPX2) }, 2136 { .driver_data = MT_CLS_NSMU, 2137 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2138 USB_DEVICE_ID_XIROKU_CSR2) }, 2139 2140 /* Google MT devices */ 2141 { .driver_data = MT_CLS_GOOGLE, 2142 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2143 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2144 { .driver_data = MT_CLS_GOOGLE, 2145 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2146 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2147 2148 /* Generic MT device */ 2149 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2150 2151 /* Generic Win 8 certified MT device */ 2152 { .driver_data = MT_CLS_WIN_8, 2153 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2154 HID_ANY_ID, HID_ANY_ID) }, 2155 { } 2156}; 2157MODULE_DEVICE_TABLE(hid, mt_devices); 2158 2159static const struct hid_usage_id mt_grabbed_usages[] = { 2160 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2161 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2162}; 2163 2164static struct hid_driver mt_driver = { 2165 .name = "hid-multitouch", 2166 .id_table = mt_devices, 2167 .probe = mt_probe, 2168 .remove = mt_remove, 2169 .input_mapping = mt_input_mapping, 2170 .input_mapped = mt_input_mapped, 2171 .input_configured = mt_input_configured, 2172 .feature_mapping = mt_feature_mapping, 2173 .usage_table = mt_grabbed_usages, 2174 .event = mt_event, 2175 .report = mt_report, 2176#ifdef CONFIG_PM 2177 .reset_resume = mt_reset_resume, 2178 .resume = mt_resume, 2179#endif 2180}; 2181module_hid_driver(mt_driver); 2182