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#define MT_QUIRK_DISABLE_WAKEUP BIT(21) 74#define MT_QUIRK_ORIENTATION_INVERT BIT(22) 75 76#define MT_INPUTMODE_TOUCHSCREEN 0x02 77#define MT_INPUTMODE_TOUCHPAD 0x03 78 79#define MT_BUTTONTYPE_CLICKPAD 0 80 81enum 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 90static const bool mtrue = true; /* default for true */ 91static const bool mfalse; /* default for false */ 92static 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 98struct 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 107struct mt_application { 108 struct list_head list; 109 unsigned int application; 110 unsigned int report_id; 111 struct list_head mt_usages; /* mt usages list */ 112 113 __s32 quirks; 114 115 __s32 *scantime; /* scantime reported */ 116 __s32 scantime_logical_max; /* max value for raw scantime */ 117 118 __s32 *raw_cc; /* contact count in the report */ 119 int left_button_state; /* left button state */ 120 unsigned int mt_flags; /* flags to pass to input-mt */ 121 122 unsigned long *pending_palm_slots; /* slots where we reported palm 123 * and need to release */ 124 125 __u8 num_received; /* how many contacts we received */ 126 __u8 num_expected; /* expected last contact index */ 127 __u8 buttons_count; /* number of physical buttons per touchpad */ 128 __u8 touches_by_report; /* how many touches are present in one report: 129 * 1 means we should use a serial protocol 130 * > 1 means hybrid (multitouch) protocol 131 */ 132 133 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 140struct 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 152struct 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 159struct 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 173static void mt_post_parse_default_settings(struct mt_device *td, 174 struct mt_application *app); 175static 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/* reserved 0x0014 */ 194#define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 195#define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 196#define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 197#define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 198 199/* vendor specific classes */ 200#define MT_CLS_3M 0x0101 201/* reserved 0x0102 */ 202#define MT_CLS_EGALAX 0x0103 203#define MT_CLS_EGALAX_SERIAL 0x0104 204#define MT_CLS_TOPSEED 0x0105 205#define MT_CLS_PANASONIC 0x0106 206#define MT_CLS_FLATFROG 0x0107 207#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 208#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 209#define MT_CLS_LG 0x010a 210#define MT_CLS_ASUS 0x010b 211#define MT_CLS_VTL 0x0110 212#define MT_CLS_GOOGLE 0x0111 213#define MT_CLS_RAZER_BLADE_STEALTH 0x0112 214#define MT_CLS_SMART_TECH 0x0113 215 216#define MT_DEFAULT_MAXCONTACT 10 217#define MT_MAX_MAXCONTACT 250 218 219/* 220 * Resync device and local timestamps after that many microseconds without 221 * receiving data. 222 */ 223#define MAX_TIMESTAMP_INTERVAL 1000000 224 225#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 226#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 227 228/* 229 * these device-dependent functions determine what slot corresponds 230 * to a valid contact that was just read. 231 */ 232 233static int cypress_compute_slot(struct mt_application *application, 234 struct mt_usages *slot) 235{ 236 if (*slot->contactid != 0 || application->num_received == 0) 237 return *slot->contactid; 238 else 239 return -1; 240} 241 242static const struct mt_class mt_classes[] = { 243 { .name = MT_CLS_DEFAULT, 244 .quirks = MT_QUIRK_ALWAYS_VALID | 245 MT_QUIRK_CONTACT_CNT_ACCURATE }, 246 { .name = MT_CLS_NSMU, 247 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 248 { .name = MT_CLS_SERIAL, 249 .quirks = MT_QUIRK_ALWAYS_VALID}, 250 { .name = MT_CLS_CONFIDENCE, 251 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 252 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 253 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 254 MT_QUIRK_SLOT_IS_CONTACTID }, 255 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 256 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 257 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 258 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 259 .quirks = MT_QUIRK_VALID_IS_INRANGE | 260 MT_QUIRK_SLOT_IS_CONTACTID, 261 .maxcontacts = 2 }, 262 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 263 .quirks = MT_QUIRK_VALID_IS_INRANGE | 264 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 265 .maxcontacts = 2 }, 266 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 267 .quirks = MT_QUIRK_VALID_IS_INRANGE | 268 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 269 { .name = MT_CLS_WIN_8, 270 .quirks = MT_QUIRK_ALWAYS_VALID | 271 MT_QUIRK_IGNORE_DUPLICATES | 272 MT_QUIRK_HOVERING | 273 MT_QUIRK_CONTACT_CNT_ACCURATE | 274 MT_QUIRK_STICKY_FINGERS | 275 MT_QUIRK_WIN8_PTP_BUTTONS, 276 .export_all_inputs = true }, 277 { .name = MT_CLS_EXPORT_ALL_INPUTS, 278 .quirks = MT_QUIRK_ALWAYS_VALID | 279 MT_QUIRK_CONTACT_CNT_ACCURATE, 280 .export_all_inputs = true }, 281 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 282 .quirks = MT_QUIRK_ALWAYS_VALID | 283 MT_QUIRK_IGNORE_DUPLICATES | 284 MT_QUIRK_HOVERING | 285 MT_QUIRK_CONTACT_CNT_ACCURATE | 286 MT_QUIRK_STICKY_FINGERS | 287 MT_QUIRK_WIN8_PTP_BUTTONS | 288 MT_QUIRK_FORCE_MULTI_INPUT, 289 .export_all_inputs = true }, 290 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 291 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 292 MT_QUIRK_HOVERING | 293 MT_QUIRK_CONTACT_CNT_ACCURATE | 294 MT_QUIRK_STICKY_FINGERS | 295 MT_QUIRK_WIN8_PTP_BUTTONS | 296 MT_QUIRK_FORCE_MULTI_INPUT | 297 MT_QUIRK_NOT_SEEN_MEANS_UP, 298 .export_all_inputs = true }, 299 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 300 .quirks = MT_QUIRK_ALWAYS_VALID | 301 MT_QUIRK_IGNORE_DUPLICATES | 302 MT_QUIRK_HOVERING | 303 MT_QUIRK_CONTACT_CNT_ACCURATE | 304 MT_QUIRK_STICKY_FINGERS | 305 MT_QUIRK_WIN8_PTP_BUTTONS | 306 MT_QUIRK_DISABLE_WAKEUP, 307 .export_all_inputs = true }, 308 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 309 .quirks = MT_QUIRK_ALWAYS_VALID | 310 MT_QUIRK_IGNORE_DUPLICATES | 311 MT_QUIRK_HOVERING | 312 MT_QUIRK_CONTACT_CNT_ACCURATE | 313 MT_QUIRK_WIN8_PTP_BUTTONS, 314 .export_all_inputs = true }, 315 316 /* 317 * vendor specific classes 318 */ 319 { .name = MT_CLS_3M, 320 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 321 MT_QUIRK_SLOT_IS_CONTACTID | 322 MT_QUIRK_TOUCH_SIZE_SCALING, 323 .sn_move = 2048, 324 .sn_width = 128, 325 .sn_height = 128, 326 .maxcontacts = 60, 327 }, 328 { .name = MT_CLS_EGALAX, 329 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 330 MT_QUIRK_VALID_IS_INRANGE, 331 .sn_move = 4096, 332 .sn_pressure = 32, 333 }, 334 { .name = MT_CLS_EGALAX_SERIAL, 335 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 336 MT_QUIRK_ALWAYS_VALID, 337 .sn_move = 4096, 338 .sn_pressure = 32, 339 }, 340 { .name = MT_CLS_TOPSEED, 341 .quirks = MT_QUIRK_ALWAYS_VALID, 342 .is_indirect = true, 343 .maxcontacts = 2, 344 }, 345 { .name = MT_CLS_PANASONIC, 346 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 347 .maxcontacts = 4 }, 348 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 349 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 350 MT_QUIRK_VALID_IS_INRANGE | 351 MT_QUIRK_SLOT_IS_CONTACTID, 352 .maxcontacts = 2 353 }, 354 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 355 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 356 MT_QUIRK_SLOT_IS_CONTACTID 357 }, 358 359 { .name = MT_CLS_FLATFROG, 360 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 361 MT_QUIRK_NO_AREA, 362 .sn_move = 2048, 363 .maxcontacts = 40, 364 }, 365 { .name = MT_CLS_LG, 366 .quirks = MT_QUIRK_ALWAYS_VALID | 367 MT_QUIRK_FIX_CONST_CONTACT_ID | 368 MT_QUIRK_IGNORE_DUPLICATES | 369 MT_QUIRK_HOVERING | 370 MT_QUIRK_CONTACT_CNT_ACCURATE }, 371 { .name = MT_CLS_ASUS, 372 .quirks = MT_QUIRK_ALWAYS_VALID | 373 MT_QUIRK_CONTACT_CNT_ACCURATE | 374 MT_QUIRK_ASUS_CUSTOM_UP }, 375 { .name = MT_CLS_VTL, 376 .quirks = MT_QUIRK_ALWAYS_VALID | 377 MT_QUIRK_CONTACT_CNT_ACCURATE | 378 MT_QUIRK_FORCE_GET_FEATURE, 379 }, 380 { .name = MT_CLS_GOOGLE, 381 .quirks = MT_QUIRK_ALWAYS_VALID | 382 MT_QUIRK_CONTACT_CNT_ACCURATE | 383 MT_QUIRK_SLOT_IS_CONTACTID | 384 MT_QUIRK_HOVERING 385 }, 386 { .name = MT_CLS_RAZER_BLADE_STEALTH, 387 .quirks = MT_QUIRK_ALWAYS_VALID | 388 MT_QUIRK_IGNORE_DUPLICATES | 389 MT_QUIRK_HOVERING | 390 MT_QUIRK_CONTACT_CNT_ACCURATE | 391 MT_QUIRK_WIN8_PTP_BUTTONS, 392 }, 393 { .name = MT_CLS_SMART_TECH, 394 .quirks = MT_QUIRK_ALWAYS_VALID | 395 MT_QUIRK_IGNORE_DUPLICATES | 396 MT_QUIRK_CONTACT_CNT_ACCURATE | 397 MT_QUIRK_SEPARATE_APP_REPORT, 398 }, 399 { } 400}; 401 402static ssize_t mt_show_quirks(struct device *dev, 403 struct device_attribute *attr, 404 char *buf) 405{ 406 struct hid_device *hdev = to_hid_device(dev); 407 struct mt_device *td = hid_get_drvdata(hdev); 408 409 return sprintf(buf, "%u\n", td->mtclass.quirks); 410} 411 412static ssize_t mt_set_quirks(struct device *dev, 413 struct device_attribute *attr, 414 const char *buf, size_t count) 415{ 416 struct hid_device *hdev = to_hid_device(dev); 417 struct mt_device *td = hid_get_drvdata(hdev); 418 struct mt_application *application; 419 420 unsigned long val; 421 422 if (kstrtoul(buf, 0, &val)) 423 return -EINVAL; 424 425 td->mtclass.quirks = val; 426 427 list_for_each_entry(application, &td->applications, list) { 428 application->quirks = val; 429 if (!application->have_contact_count) 430 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 431 } 432 433 return count; 434} 435 436static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 437 438static struct attribute *sysfs_attrs[] = { 439 &dev_attr_quirks.attr, 440 NULL 441}; 442 443static const struct attribute_group mt_attribute_group = { 444 .attrs = sysfs_attrs 445}; 446 447static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 448{ 449 int ret; 450 u32 size = hid_report_len(report); 451 u8 *buf; 452 453 /* 454 * Do not fetch the feature report if the device has been explicitly 455 * marked as non-capable. 456 */ 457 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 458 return; 459 460 buf = hid_alloc_report_buf(report, GFP_KERNEL); 461 if (!buf) 462 return; 463 464 ret = hid_hw_raw_request(hdev, report->id, buf, size, 465 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 466 if (ret < 0) { 467 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 468 report->id); 469 } else { 470 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 471 size, 0); 472 if (ret) 473 dev_warn(&hdev->dev, "failed to report feature\n"); 474 } 475 476 kfree(buf); 477} 478 479static void mt_feature_mapping(struct hid_device *hdev, 480 struct hid_field *field, struct hid_usage *usage) 481{ 482 struct mt_device *td = hid_get_drvdata(hdev); 483 484 switch (usage->hid) { 485 case HID_DG_CONTACTMAX: 486 mt_get_feature(hdev, field->report); 487 488 td->maxcontacts = field->value[0]; 489 if (!td->maxcontacts && 490 field->logical_maximum <= MT_MAX_MAXCONTACT) 491 td->maxcontacts = field->logical_maximum; 492 if (td->mtclass.maxcontacts) 493 /* check if the maxcontacts is given by the class */ 494 td->maxcontacts = td->mtclass.maxcontacts; 495 496 break; 497 case HID_DG_BUTTONTYPE: 498 if (usage->usage_index >= field->report_count) { 499 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 500 break; 501 } 502 503 mt_get_feature(hdev, field->report); 504 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 505 td->is_buttonpad = true; 506 507 break; 508 case 0xff0000c5: 509 /* Retrieve the Win8 blob once to enable some devices */ 510 if (usage->usage_index == 0) 511 mt_get_feature(hdev, field->report); 512 break; 513 } 514} 515 516static void set_abs(struct input_dev *input, unsigned int code, 517 struct hid_field *field, int snratio) 518{ 519 int fmin = field->logical_minimum; 520 int fmax = field->logical_maximum; 521 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 522 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 523 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 524} 525 526static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 527 struct mt_application *application) 528{ 529 struct mt_usages *usage; 530 531 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 532 if (!usage) 533 return NULL; 534 535 /* set some defaults so we do not need to check for null pointers */ 536 usage->x = DEFAULT_ZERO; 537 usage->y = DEFAULT_ZERO; 538 usage->cx = DEFAULT_ZERO; 539 usage->cy = DEFAULT_ZERO; 540 usage->p = DEFAULT_ZERO; 541 usage->w = DEFAULT_ZERO; 542 usage->h = DEFAULT_ZERO; 543 usage->a = DEFAULT_ZERO; 544 usage->contactid = DEFAULT_ZERO; 545 usage->tip_state = DEFAULT_FALSE; 546 usage->inrange_state = DEFAULT_FALSE; 547 usage->confidence_state = DEFAULT_TRUE; 548 549 list_add_tail(&usage->list, &application->mt_usages); 550 551 return usage; 552} 553 554static struct mt_application *mt_allocate_application(struct mt_device *td, 555 struct hid_report *report) 556{ 557 unsigned int application = report->application; 558 struct mt_application *mt_application; 559 560 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 561 GFP_KERNEL); 562 if (!mt_application) 563 return NULL; 564 565 mt_application->application = application; 566 INIT_LIST_HEAD(&mt_application->mt_usages); 567 568 if (application == HID_DG_TOUCHSCREEN) 569 mt_application->mt_flags |= INPUT_MT_DIRECT; 570 571 /* 572 * Model touchscreens providing buttons as touchpads. 573 */ 574 if (application == HID_DG_TOUCHPAD) { 575 mt_application->mt_flags |= INPUT_MT_POINTER; 576 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 577 } 578 579 mt_application->scantime = DEFAULT_ZERO; 580 mt_application->raw_cc = DEFAULT_ZERO; 581 mt_application->quirks = td->mtclass.quirks; 582 mt_application->report_id = report->id; 583 584 list_add_tail(&mt_application->list, &td->applications); 585 586 return mt_application; 587} 588 589static struct mt_application *mt_find_application(struct mt_device *td, 590 struct hid_report *report) 591{ 592 unsigned int application = report->application; 593 struct mt_application *tmp, *mt_application = NULL; 594 595 list_for_each_entry(tmp, &td->applications, list) { 596 if (application == tmp->application) { 597 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 598 tmp->report_id == report->id) { 599 mt_application = tmp; 600 break; 601 } 602 } 603 } 604 605 if (!mt_application) 606 mt_application = mt_allocate_application(td, report); 607 608 return mt_application; 609} 610 611static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 612 struct hid_report *report) 613{ 614 struct mt_report_data *rdata; 615 struct hid_field *field; 616 int r, n; 617 618 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 619 if (!rdata) 620 return NULL; 621 622 rdata->report = report; 623 rdata->application = mt_find_application(td, report); 624 625 if (!rdata->application) { 626 devm_kfree(&td->hdev->dev, rdata); 627 return NULL; 628 } 629 630 for (r = 0; r < report->maxfield; r++) { 631 field = report->field[r]; 632 633 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 634 continue; 635 636 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 637 for (n = 0; n < field->report_count; n++) { 638 if (field->usage[n].hid == HID_DG_CONTACTID) { 639 rdata->is_mt_collection = true; 640 break; 641 } 642 } 643 } 644 } 645 646 list_add_tail(&rdata->list, &td->reports); 647 648 return rdata; 649} 650 651static struct mt_report_data *mt_find_report_data(struct mt_device *td, 652 struct hid_report *report) 653{ 654 struct mt_report_data *tmp, *rdata = NULL; 655 656 list_for_each_entry(tmp, &td->reports, list) { 657 if (report == tmp->report) { 658 rdata = tmp; 659 break; 660 } 661 } 662 663 if (!rdata) 664 rdata = mt_allocate_report_data(td, report); 665 666 return rdata; 667} 668 669static void mt_store_field(struct hid_device *hdev, 670 struct mt_application *application, 671 __s32 *value, 672 size_t offset) 673{ 674 struct mt_usages *usage; 675 __s32 **target; 676 677 if (list_empty(&application->mt_usages)) 678 usage = mt_allocate_usage(hdev, application); 679 else 680 usage = list_last_entry(&application->mt_usages, 681 struct mt_usages, 682 list); 683 684 if (!usage) 685 return; 686 687 target = (__s32 **)((char *)usage + offset); 688 689 /* the value has already been filled, create a new slot */ 690 if (*target != DEFAULT_TRUE && 691 *target != DEFAULT_FALSE && 692 *target != DEFAULT_ZERO) { 693 if (usage->contactid == DEFAULT_ZERO || 694 usage->x == DEFAULT_ZERO || 695 usage->y == DEFAULT_ZERO) { 696 hid_dbg(hdev, 697 "ignoring duplicate usage on incomplete"); 698 return; 699 } 700 usage = mt_allocate_usage(hdev, application); 701 if (!usage) 702 return; 703 704 target = (__s32 **)((char *)usage + offset); 705 } 706 707 *target = value; 708} 709 710#define MT_STORE_FIELD(__name) \ 711 mt_store_field(hdev, app, \ 712 &field->value[usage->usage_index], \ 713 offsetof(struct mt_usages, __name)) 714 715static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 716 struct hid_field *field, struct hid_usage *usage, 717 unsigned long **bit, int *max, struct mt_application *app) 718{ 719 struct mt_device *td = hid_get_drvdata(hdev); 720 struct mt_class *cls = &td->mtclass; 721 int code; 722 struct hid_usage *prev_usage = NULL; 723 724 /* 725 * Model touchscreens providing buttons as touchpads. 726 */ 727 if (field->application == HID_DG_TOUCHSCREEN && 728 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 729 app->mt_flags |= INPUT_MT_POINTER; 730 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 731 } 732 733 /* count the buttons on touchpads */ 734 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 735 app->buttons_count++; 736 737 if (usage->usage_index) 738 prev_usage = &field->usage[usage->usage_index - 1]; 739 740 switch (usage->hid & HID_USAGE_PAGE) { 741 742 case HID_UP_GENDESK: 743 switch (usage->hid) { 744 case HID_GD_X: 745 if (prev_usage && (prev_usage->hid == usage->hid)) { 746 code = ABS_MT_TOOL_X; 747 MT_STORE_FIELD(cx); 748 } else { 749 code = ABS_MT_POSITION_X; 750 MT_STORE_FIELD(x); 751 } 752 753 set_abs(hi->input, code, field, cls->sn_move); 754 755 /* 756 * A system multi-axis that exports X and Y has a high 757 * chance of being used directly on a surface 758 */ 759 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 760 __set_bit(INPUT_PROP_DIRECT, 761 hi->input->propbit); 762 input_set_abs_params(hi->input, 763 ABS_MT_TOOL_TYPE, 764 MT_TOOL_DIAL, 765 MT_TOOL_DIAL, 0, 0); 766 } 767 768 return 1; 769 case HID_GD_Y: 770 if (prev_usage && (prev_usage->hid == usage->hid)) { 771 code = ABS_MT_TOOL_Y; 772 MT_STORE_FIELD(cy); 773 } else { 774 code = ABS_MT_POSITION_Y; 775 MT_STORE_FIELD(y); 776 } 777 778 set_abs(hi->input, code, field, cls->sn_move); 779 780 return 1; 781 } 782 return 0; 783 784 case HID_UP_DIGITIZER: 785 switch (usage->hid) { 786 case HID_DG_INRANGE: 787 if (app->quirks & MT_QUIRK_HOVERING) { 788 input_set_abs_params(hi->input, 789 ABS_MT_DISTANCE, 0, 1, 0, 0); 790 } 791 MT_STORE_FIELD(inrange_state); 792 return 1; 793 case HID_DG_CONFIDENCE: 794 if ((cls->name == MT_CLS_WIN_8 || 795 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 796 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 797 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 798 (field->application == HID_DG_TOUCHPAD || 799 field->application == HID_DG_TOUCHSCREEN)) 800 app->quirks |= MT_QUIRK_CONFIDENCE; 801 802 if (app->quirks & MT_QUIRK_CONFIDENCE) 803 input_set_abs_params(hi->input, 804 ABS_MT_TOOL_TYPE, 805 MT_TOOL_FINGER, 806 MT_TOOL_PALM, 0, 0); 807 808 MT_STORE_FIELD(confidence_state); 809 return 1; 810 case HID_DG_TIPSWITCH: 811 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 812 input_set_capability(hi->input, 813 EV_KEY, BTN_TOUCH); 814 MT_STORE_FIELD(tip_state); 815 return 1; 816 case HID_DG_CONTACTID: 817 MT_STORE_FIELD(contactid); 818 app->touches_by_report++; 819 return 1; 820 case HID_DG_WIDTH: 821 if (!(app->quirks & MT_QUIRK_NO_AREA)) 822 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 823 cls->sn_width); 824 MT_STORE_FIELD(w); 825 return 1; 826 case HID_DG_HEIGHT: 827 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 828 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 829 cls->sn_height); 830 831 /* 832 * Only set ABS_MT_ORIENTATION if it is not 833 * already set by the HID_DG_AZIMUTH usage. 834 */ 835 if (!test_bit(ABS_MT_ORIENTATION, 836 hi->input->absbit)) 837 input_set_abs_params(hi->input, 838 ABS_MT_ORIENTATION, 0, 1, 0, 0); 839 } 840 MT_STORE_FIELD(h); 841 return 1; 842 case HID_DG_TIPPRESSURE: 843 set_abs(hi->input, ABS_MT_PRESSURE, field, 844 cls->sn_pressure); 845 MT_STORE_FIELD(p); 846 return 1; 847 case HID_DG_SCANTIME: 848 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 849 app->scantime = &field->value[usage->usage_index]; 850 app->scantime_logical_max = field->logical_maximum; 851 return 1; 852 case HID_DG_CONTACTCOUNT: 853 app->have_contact_count = true; 854 app->raw_cc = &field->value[usage->usage_index]; 855 return 1; 856 case HID_DG_AZIMUTH: 857 /* 858 * Azimuth has the range of [0, MAX) representing a full 859 * revolution. Set ABS_MT_ORIENTATION to a quarter of 860 * MAX according the definition of ABS_MT_ORIENTATION 861 */ 862 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 863 -field->logical_maximum / 4, 864 field->logical_maximum / 4, 865 cls->sn_move ? 866 field->logical_maximum / cls->sn_move : 0, 0); 867 MT_STORE_FIELD(a); 868 return 1; 869 case HID_DG_CONTACTMAX: 870 /* contact max are global to the report */ 871 return -1; 872 case HID_DG_TOUCH: 873 /* Legacy devices use TIPSWITCH and not TOUCH. 874 * Let's just ignore this field. */ 875 return -1; 876 } 877 /* let hid-input decide for the others */ 878 return 0; 879 880 case HID_UP_BUTTON: 881 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 882 /* 883 * MS PTP spec says that external buttons left and right have 884 * usages 2 and 3. 885 */ 886 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 887 field->application == HID_DG_TOUCHPAD && 888 (usage->hid & HID_USAGE) > 1) 889 code--; 890 891 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 892 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 893 894 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 895 if (!*bit) 896 return -1; 897 input_set_capability(hi->input, EV_KEY, code); 898 return 1; 899 900 case 0xff000000: 901 /* we do not want to map these: no input-oriented meaning */ 902 return -1; 903 } 904 905 return 0; 906} 907 908static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 909 struct mt_usages *slot, 910 struct input_dev *input) 911{ 912 __s32 quirks = app->quirks; 913 914 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 915 return *slot->contactid; 916 917 if (quirks & MT_QUIRK_CYPRESS) 918 return cypress_compute_slot(app, slot); 919 920 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 921 return app->num_received; 922 923 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 924 return *slot->contactid - 1; 925 926 return input_mt_get_slot_by_key(input, *slot->contactid); 927} 928 929static void mt_release_pending_palms(struct mt_device *td, 930 struct mt_application *app, 931 struct input_dev *input) 932{ 933 int slotnum; 934 bool need_sync = false; 935 936 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 937 clear_bit(slotnum, app->pending_palm_slots); 938 939 input_mt_slot(input, slotnum); 940 input_mt_report_slot_inactive(input); 941 942 need_sync = true; 943 } 944 945 if (need_sync) { 946 input_mt_sync_frame(input); 947 input_sync(input); 948 } 949} 950 951/* 952 * this function is called when a whole packet has been received and processed, 953 * so that it can decide what to send to the input layer. 954 */ 955static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 956 struct input_dev *input) 957{ 958 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 959 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 960 961 input_mt_sync_frame(input); 962 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 963 input_sync(input); 964 965 mt_release_pending_palms(td, app, input); 966 967 app->num_received = 0; 968 app->left_button_state = 0; 969 970 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 971 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 972 else 973 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 974 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 975} 976 977static int mt_compute_timestamp(struct mt_application *app, __s32 value) 978{ 979 long delta = value - app->prev_scantime; 980 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 981 982 app->jiffies = jiffies; 983 984 if (delta < 0) 985 delta += app->scantime_logical_max; 986 987 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 988 delta *= 100; 989 990 if (jdelta > MAX_TIMESTAMP_INTERVAL) 991 /* No data received for a while, resync the timestamp. */ 992 return 0; 993 else 994 return app->timestamp + delta; 995} 996 997static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 998 struct hid_usage *usage, __s32 value) 999{ 1000 /* we will handle the hidinput part later, now remains hiddev */ 1001 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1002 hid->hiddev_hid_event(hid, field, usage, value); 1003 1004 return 1; 1005} 1006 1007static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1008 struct mt_application *app, 1009 struct mt_usages *slot) 1010{ 1011 struct input_mt *mt = input->mt; 1012 struct hid_device *hdev = td->hdev; 1013 __s32 quirks = app->quirks; 1014 bool valid = true; 1015 bool confidence_state = true; 1016 bool inrange_state = false; 1017 int active; 1018 int slotnum; 1019 int tool = MT_TOOL_FINGER; 1020 1021 if (!slot) 1022 return -EINVAL; 1023 1024 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1025 app->num_received >= app->num_expected) 1026 return -EAGAIN; 1027 1028 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1029 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1030 valid = *slot->inrange_state; 1031 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1032 valid = *slot->tip_state; 1033 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1034 valid = *slot->confidence_state; 1035 1036 if (!valid) 1037 return 0; 1038 } 1039 1040 slotnum = mt_compute_slot(td, app, slot, input); 1041 if (slotnum < 0 || slotnum >= td->maxcontacts) 1042 return 0; 1043 1044 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1045 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1046 1047 if (input_mt_is_active(i_slot) && 1048 input_mt_is_used(mt, i_slot)) 1049 return -EAGAIN; 1050 } 1051 1052 if (quirks & MT_QUIRK_CONFIDENCE) 1053 confidence_state = *slot->confidence_state; 1054 1055 if (quirks & MT_QUIRK_HOVERING) 1056 inrange_state = *slot->inrange_state; 1057 1058 active = *slot->tip_state || inrange_state; 1059 1060 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1061 tool = MT_TOOL_DIAL; 1062 else if (unlikely(!confidence_state)) { 1063 tool = MT_TOOL_PALM; 1064 if (!active && mt && 1065 input_mt_is_active(&mt->slots[slotnum])) { 1066 /* 1067 * The non-confidence was reported for 1068 * previously valid contact that is also no 1069 * longer valid. We can't simply report 1070 * lift-off as userspace will not be aware 1071 * of non-confidence, so we need to split 1072 * it into 2 events: active MT_TOOL_PALM 1073 * and a separate liftoff. 1074 */ 1075 active = true; 1076 set_bit(slotnum, app->pending_palm_slots); 1077 } 1078 } 1079 1080 input_mt_slot(input, slotnum); 1081 input_mt_report_slot_state(input, tool, active); 1082 if (active) { 1083 /* this finger is in proximity of the sensor */ 1084 int wide = (*slot->w > *slot->h); 1085 int major = max(*slot->w, *slot->h); 1086 int minor = min(*slot->w, *slot->h); 1087 int orientation = wide; 1088 int max_azimuth; 1089 int azimuth; 1090 int x; 1091 int y; 1092 int cx; 1093 int cy; 1094 1095 if (slot->a != DEFAULT_ZERO) { 1096 /* 1097 * Azimuth is counter-clockwise and ranges from [0, MAX) 1098 * (a full revolution). Convert it to clockwise ranging 1099 * [-MAX/2, MAX/2]. 1100 * 1101 * Note that ABS_MT_ORIENTATION require us to report 1102 * the limit of [-MAX/4, MAX/4], but the value can go 1103 * out of range to [-MAX/2, MAX/2] to report an upside 1104 * down ellipsis. 1105 */ 1106 azimuth = *slot->a; 1107 max_azimuth = input_abs_get_max(input, 1108 ABS_MT_ORIENTATION); 1109 if (azimuth > max_azimuth * 2) 1110 azimuth -= max_azimuth * 4; 1111 orientation = -azimuth; 1112 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1113 orientation = -orientation; 1114 1115 } 1116 1117 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1118 /* 1119 * divided by two to match visual scale of touch 1120 * for devices with this quirk 1121 */ 1122 major = major >> 1; 1123 minor = minor >> 1; 1124 } 1125 1126 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1127 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1128 *slot->x; 1129 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1130 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1131 *slot->y; 1132 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1133 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1134 *slot->cx; 1135 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1136 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1137 *slot->cy; 1138 1139 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1140 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1141 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1142 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1143 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1144 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1145 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1146 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1147 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1148 1149 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1150 } 1151 1152 return 0; 1153} 1154 1155static void mt_process_mt_event(struct hid_device *hid, 1156 struct mt_application *app, 1157 struct hid_field *field, 1158 struct hid_usage *usage, 1159 __s32 value, 1160 bool first_packet) 1161{ 1162 __s32 quirks = app->quirks; 1163 struct input_dev *input = field->hidinput->input; 1164 1165 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1166 return; 1167 1168 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1169 1170 /* 1171 * For Win8 PTP touchpads we should only look at 1172 * non finger/touch events in the first_packet of a 1173 * (possible) multi-packet frame. 1174 */ 1175 if (!first_packet) 1176 return; 1177 1178 /* 1179 * For Win8 PTP touchpads we map both the clickpad click 1180 * and any "external" left buttons to BTN_LEFT if a 1181 * device claims to have both we need to report 1 for 1182 * BTN_LEFT if either is pressed, so we or all values 1183 * together and report the result in mt_sync_frame(). 1184 */ 1185 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1186 app->left_button_state |= value; 1187 return; 1188 } 1189 } 1190 1191 input_event(input, usage->type, usage->code, value); 1192} 1193 1194static void mt_touch_report(struct hid_device *hid, 1195 struct mt_report_data *rdata) 1196{ 1197 struct mt_device *td = hid_get_drvdata(hid); 1198 struct hid_report *report = rdata->report; 1199 struct mt_application *app = rdata->application; 1200 struct hid_field *field; 1201 struct input_dev *input; 1202 struct mt_usages *slot; 1203 bool first_packet; 1204 unsigned count; 1205 int r, n; 1206 int scantime = 0; 1207 int contact_count = -1; 1208 1209 /* sticky fingers release in progress, abort */ 1210 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1211 return; 1212 1213 scantime = *app->scantime; 1214 app->timestamp = mt_compute_timestamp(app, scantime); 1215 if (app->raw_cc != DEFAULT_ZERO) 1216 contact_count = *app->raw_cc; 1217 1218 /* 1219 * Includes multi-packet support where subsequent 1220 * packets are sent with zero contactcount. 1221 */ 1222 if (contact_count >= 0) { 1223 /* 1224 * For Win8 PTPs the first packet (td->num_received == 0) may 1225 * have a contactcount of 0 if there only is a button event. 1226 * We double check that this is not a continuation packet 1227 * of a possible multi-packet frame be checking that the 1228 * timestamp has changed. 1229 */ 1230 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1231 app->num_received == 0 && 1232 app->prev_scantime != scantime) 1233 app->num_expected = contact_count; 1234 /* A non 0 contact count always indicates a first packet */ 1235 else if (contact_count) 1236 app->num_expected = contact_count; 1237 } 1238 app->prev_scantime = scantime; 1239 1240 first_packet = app->num_received == 0; 1241 1242 input = report->field[0]->hidinput->input; 1243 1244 list_for_each_entry(slot, &app->mt_usages, list) { 1245 if (!mt_process_slot(td, input, app, slot)) 1246 app->num_received++; 1247 } 1248 1249 for (r = 0; r < report->maxfield; r++) { 1250 field = report->field[r]; 1251 count = field->report_count; 1252 1253 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1254 continue; 1255 1256 for (n = 0; n < count; n++) 1257 mt_process_mt_event(hid, app, field, 1258 &field->usage[n], field->value[n], 1259 first_packet); 1260 } 1261 1262 if (app->num_received >= app->num_expected) 1263 mt_sync_frame(td, app, input); 1264 1265 /* 1266 * Windows 8 specs says 2 things: 1267 * - once a contact has been reported, it has to be reported in each 1268 * subsequent report 1269 * - the report rate when fingers are present has to be at least 1270 * the refresh rate of the screen, 60 or 120 Hz 1271 * 1272 * I interprete this that the specification forces a report rate of 1273 * at least 60 Hz for a touchscreen to be certified. 1274 * Which means that if we do not get a report whithin 16 ms, either 1275 * something wrong happens, either the touchscreen forgets to send 1276 * a release. Taking a reasonable margin allows to remove issues 1277 * with USB communication or the load of the machine. 1278 * 1279 * Given that Win 8 devices are forced to send a release, this will 1280 * only affect laggish machines and the ones that have a firmware 1281 * defect. 1282 */ 1283 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1284 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1285 mod_timer(&td->release_timer, 1286 jiffies + msecs_to_jiffies(100)); 1287 else 1288 del_timer(&td->release_timer); 1289 } 1290 1291 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1292} 1293 1294static int mt_touch_input_configured(struct hid_device *hdev, 1295 struct hid_input *hi, 1296 struct mt_application *app) 1297{ 1298 struct mt_device *td = hid_get_drvdata(hdev); 1299 struct mt_class *cls = &td->mtclass; 1300 struct input_dev *input = hi->input; 1301 int ret; 1302 1303 if (!td->maxcontacts) 1304 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1305 1306 mt_post_parse(td, app); 1307 if (td->serial_maybe) 1308 mt_post_parse_default_settings(td, app); 1309 1310 if (cls->is_indirect) 1311 app->mt_flags |= INPUT_MT_POINTER; 1312 1313 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1314 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1315 1316 /* check for clickpads */ 1317 if ((app->mt_flags & INPUT_MT_POINTER) && 1318 (app->buttons_count == 1)) 1319 td->is_buttonpad = true; 1320 1321 if (td->is_buttonpad) 1322 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1323 1324 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1325 BITS_TO_LONGS(td->maxcontacts), 1326 sizeof(long), 1327 GFP_KERNEL); 1328 if (!app->pending_palm_slots) 1329 return -ENOMEM; 1330 1331 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1332 if (ret) 1333 return ret; 1334 1335 app->mt_flags = 0; 1336 return 0; 1337} 1338 1339#define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1340 max, EV_KEY, (c)) 1341static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1342 struct hid_field *field, struct hid_usage *usage, 1343 unsigned long **bit, int *max) 1344{ 1345 struct mt_device *td = hid_get_drvdata(hdev); 1346 struct mt_application *application; 1347 struct mt_report_data *rdata; 1348 1349 rdata = mt_find_report_data(td, field->report); 1350 if (!rdata) { 1351 hid_err(hdev, "failed to allocate data for report\n"); 1352 return 0; 1353 } 1354 1355 application = rdata->application; 1356 1357 /* 1358 * If mtclass.export_all_inputs is not set, only map fields from 1359 * TouchScreen or TouchPad collections. We need to ignore fields 1360 * that belong to other collections such as Mouse that might have 1361 * the same GenericDesktop usages. 1362 */ 1363 if (!td->mtclass.export_all_inputs && 1364 field->application != HID_DG_TOUCHSCREEN && 1365 field->application != HID_DG_PEN && 1366 field->application != HID_DG_TOUCHPAD && 1367 field->application != HID_GD_KEYBOARD && 1368 field->application != HID_GD_SYSTEM_CONTROL && 1369 field->application != HID_CP_CONSUMER_CONTROL && 1370 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1371 field->application != HID_GD_SYSTEM_MULTIAXIS && 1372 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1373 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1374 return -1; 1375 1376 /* 1377 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1378 * touchpad report descriptor. We need to treat these as an array to 1379 * map usages to input keys. 1380 */ 1381 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1382 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1383 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1384 set_bit(EV_REP, hi->input->evbit); 1385 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1386 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1387 switch (usage->hid & HID_USAGE) { 1388 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1389 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1390 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1391 case 0x6b: mt_map_key_clear(KEY_F21); break; 1392 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1393 default: 1394 return -1; 1395 } 1396 return 1; 1397 } 1398 1399 if (rdata->is_mt_collection) 1400 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1401 application); 1402 1403 /* 1404 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1405 * for the stylus. Overwrite the hid_input application 1406 */ 1407 if (field->physical == HID_DG_STYLUS) 1408 hi->application = HID_DG_STYLUS; 1409 1410 /* let hid-core decide for the others */ 1411 return 0; 1412} 1413 1414static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1415 struct hid_field *field, struct hid_usage *usage, 1416 unsigned long **bit, int *max) 1417{ 1418 struct mt_device *td = hid_get_drvdata(hdev); 1419 struct mt_report_data *rdata; 1420 1421 rdata = mt_find_report_data(td, field->report); 1422 if (rdata && rdata->is_mt_collection) { 1423 /* We own these mappings, tell hid-input to ignore them */ 1424 return -1; 1425 } 1426 1427 /* let hid-core decide for the others */ 1428 return 0; 1429} 1430 1431static int mt_event(struct hid_device *hid, struct hid_field *field, 1432 struct hid_usage *usage, __s32 value) 1433{ 1434 struct mt_device *td = hid_get_drvdata(hid); 1435 struct mt_report_data *rdata; 1436 1437 rdata = mt_find_report_data(td, field->report); 1438 if (rdata && rdata->is_mt_collection) 1439 return mt_touch_event(hid, field, usage, value); 1440 1441 return 0; 1442} 1443 1444static void mt_report(struct hid_device *hid, struct hid_report *report) 1445{ 1446 struct mt_device *td = hid_get_drvdata(hid); 1447 struct hid_field *field = report->field[0]; 1448 struct mt_report_data *rdata; 1449 1450 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1451 return; 1452 1453 rdata = mt_find_report_data(td, report); 1454 if (rdata && rdata->is_mt_collection) 1455 return mt_touch_report(hid, rdata); 1456 1457 if (field && field->hidinput && field->hidinput->input) 1458 input_sync(field->hidinput->input); 1459} 1460 1461static bool mt_need_to_apply_feature(struct hid_device *hdev, 1462 struct hid_field *field, 1463 struct hid_usage *usage, 1464 enum latency_mode latency, 1465 bool surface_switch, 1466 bool button_switch, 1467 bool *inputmode_found) 1468{ 1469 struct mt_device *td = hid_get_drvdata(hdev); 1470 struct mt_class *cls = &td->mtclass; 1471 struct hid_report *report = field->report; 1472 unsigned int index = usage->usage_index; 1473 char *buf; 1474 u32 report_len; 1475 int max; 1476 1477 switch (usage->hid) { 1478 case HID_DG_INPUTMODE: 1479 /* 1480 * Some elan panels wrongly declare 2 input mode features, 1481 * and silently ignore when we set the value in the second 1482 * field. Skip the second feature and hope for the best. 1483 */ 1484 if (*inputmode_found) 1485 return false; 1486 1487 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1488 report_len = hid_report_len(report); 1489 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1490 if (!buf) { 1491 hid_err(hdev, 1492 "failed to allocate buffer for report\n"); 1493 return false; 1494 } 1495 hid_hw_raw_request(hdev, report->id, buf, report_len, 1496 HID_FEATURE_REPORT, 1497 HID_REQ_GET_REPORT); 1498 kfree(buf); 1499 } 1500 1501 field->value[index] = td->inputmode_value; 1502 *inputmode_found = true; 1503 return true; 1504 1505 case HID_DG_CONTACTMAX: 1506 if (cls->maxcontacts) { 1507 max = min_t(int, field->logical_maximum, 1508 cls->maxcontacts); 1509 if (field->value[index] != max) { 1510 field->value[index] = max; 1511 return true; 1512 } 1513 } 1514 break; 1515 1516 case HID_DG_LATENCYMODE: 1517 field->value[index] = latency; 1518 return true; 1519 1520 case HID_DG_SURFACESWITCH: 1521 field->value[index] = surface_switch; 1522 return true; 1523 1524 case HID_DG_BUTTONSWITCH: 1525 field->value[index] = button_switch; 1526 return true; 1527 } 1528 1529 return false; /* no need to update the report */ 1530} 1531 1532static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1533 bool surface_switch, bool button_switch) 1534{ 1535 struct hid_report_enum *rep_enum; 1536 struct hid_report *rep; 1537 struct hid_usage *usage; 1538 int i, j; 1539 bool update_report; 1540 bool inputmode_found = false; 1541 1542 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1543 list_for_each_entry(rep, &rep_enum->report_list, list) { 1544 update_report = false; 1545 1546 for (i = 0; i < rep->maxfield; i++) { 1547 /* Ignore if report count is out of bounds. */ 1548 if (rep->field[i]->report_count < 1) 1549 continue; 1550 1551 for (j = 0; j < rep->field[i]->maxusage; j++) { 1552 usage = &rep->field[i]->usage[j]; 1553 1554 if (mt_need_to_apply_feature(hdev, 1555 rep->field[i], 1556 usage, 1557 latency, 1558 surface_switch, 1559 button_switch, 1560 &inputmode_found)) 1561 update_report = true; 1562 } 1563 } 1564 1565 if (update_report) 1566 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1567 } 1568} 1569 1570static void mt_post_parse_default_settings(struct mt_device *td, 1571 struct mt_application *app) 1572{ 1573 __s32 quirks = app->quirks; 1574 1575 /* unknown serial device needs special quirks */ 1576 if (list_is_singular(&app->mt_usages)) { 1577 quirks |= MT_QUIRK_ALWAYS_VALID; 1578 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1579 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1580 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1581 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1582 } 1583 1584 app->quirks = quirks; 1585} 1586 1587static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1588{ 1589 if (!app->have_contact_count) 1590 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1591} 1592 1593static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1594{ 1595 struct mt_device *td = hid_get_drvdata(hdev); 1596 const char *suffix = NULL; 1597 struct mt_report_data *rdata; 1598 struct mt_application *mt_application = NULL; 1599 struct hid_report *report; 1600 int ret; 1601 1602 list_for_each_entry(report, &hi->reports, hidinput_list) { 1603 rdata = mt_find_report_data(td, report); 1604 if (!rdata) { 1605 hid_err(hdev, "failed to allocate data for report\n"); 1606 return -ENOMEM; 1607 } 1608 1609 mt_application = rdata->application; 1610 1611 if (rdata->is_mt_collection) { 1612 ret = mt_touch_input_configured(hdev, hi, 1613 mt_application); 1614 if (ret) 1615 return ret; 1616 } 1617 } 1618 1619 switch (hi->application) { 1620 case HID_GD_KEYBOARD: 1621 case HID_GD_KEYPAD: 1622 case HID_GD_MOUSE: 1623 case HID_DG_TOUCHPAD: 1624 case HID_GD_SYSTEM_CONTROL: 1625 case HID_CP_CONSUMER_CONTROL: 1626 case HID_GD_WIRELESS_RADIO_CTLS: 1627 case HID_GD_SYSTEM_MULTIAXIS: 1628 /* already handled by hid core */ 1629 break; 1630 case HID_DG_TOUCHSCREEN: 1631 /* we do not set suffix = "Touchscreen" */ 1632 hi->input->name = hdev->name; 1633 break; 1634 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1635 suffix = "Custom Media Keys"; 1636 break; 1637 case HID_DG_STYLUS: 1638 /* force BTN_STYLUS to allow tablet matching in udev */ 1639 __set_bit(BTN_STYLUS, hi->input->keybit); 1640 break; 1641 default: 1642 suffix = "UNKNOWN"; 1643 break; 1644 } 1645 1646 if (suffix) 1647 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1648 "%s %s", hdev->name, suffix); 1649 1650 return 0; 1651} 1652 1653static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1654{ 1655 if (field->usage[0].hid != usage || 1656 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1657 return; 1658 1659 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1660 field->flags |= HID_MAIN_ITEM_VARIABLE; 1661} 1662 1663static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1664{ 1665 struct hid_report *report; 1666 int i; 1667 1668 list_for_each_entry(report, 1669 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1670 list) { 1671 1672 if (!report->maxfield) 1673 continue; 1674 1675 for (i = 0; i < report->maxfield; i++) 1676 if (report->field[i]->maxusage >= 1) 1677 mt_fix_const_field(report->field[i], usage); 1678 } 1679} 1680 1681static void mt_release_contacts(struct hid_device *hid) 1682{ 1683 struct hid_input *hidinput; 1684 struct mt_application *application; 1685 struct mt_device *td = hid_get_drvdata(hid); 1686 1687 list_for_each_entry(hidinput, &hid->inputs, list) { 1688 struct input_dev *input_dev = hidinput->input; 1689 struct input_mt *mt = input_dev->mt; 1690 int i; 1691 1692 if (mt) { 1693 for (i = 0; i < mt->num_slots; i++) { 1694 input_mt_slot(input_dev, i); 1695 input_mt_report_slot_inactive(input_dev); 1696 } 1697 input_mt_sync_frame(input_dev); 1698 input_sync(input_dev); 1699 } 1700 } 1701 1702 list_for_each_entry(application, &td->applications, list) { 1703 application->num_received = 0; 1704 } 1705} 1706 1707static void mt_expired_timeout(struct timer_list *t) 1708{ 1709 struct mt_device *td = from_timer(td, t, release_timer); 1710 struct hid_device *hdev = td->hdev; 1711 1712 /* 1713 * An input report came in just before we release the sticky fingers, 1714 * it will take care of the sticky fingers. 1715 */ 1716 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1717 return; 1718 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1719 mt_release_contacts(hdev); 1720 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1721} 1722 1723static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1724{ 1725 int ret, i; 1726 struct mt_device *td; 1727 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1728 1729 for (i = 0; mt_classes[i].name ; i++) { 1730 if (id->driver_data == mt_classes[i].name) { 1731 mtclass = &(mt_classes[i]); 1732 break; 1733 } 1734 } 1735 1736 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1737 if (!td) { 1738 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1739 return -ENOMEM; 1740 } 1741 td->hdev = hdev; 1742 td->mtclass = *mtclass; 1743 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1744 hid_set_drvdata(hdev, td); 1745 1746 INIT_LIST_HEAD(&td->applications); 1747 INIT_LIST_HEAD(&td->reports); 1748 1749 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1750 td->serial_maybe = true; 1751 1752 1753 /* Orientation is inverted if the X or Y axes are 1754 * flipped, but normalized if both are inverted. 1755 */ 1756 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1757 !((hdev->quirks & HID_QUIRK_X_INVERT) 1758 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1759 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1760 1761 /* This allows the driver to correctly support devices 1762 * that emit events over several HID messages. 1763 */ 1764 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1765 1766 /* 1767 * This allows the driver to handle different input sensors 1768 * that emits events through different applications on the same HID 1769 * device. 1770 */ 1771 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1772 1773 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1774 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1775 1776 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1777 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1778 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1779 } 1780 1781 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1782 1783 ret = hid_parse(hdev); 1784 if (ret != 0) 1785 return ret; 1786 1787 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1788 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1789 1790 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1791 if (ret) 1792 return ret; 1793 1794 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1795 if (ret) 1796 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1797 hdev->name); 1798 1799 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1800 1801 return 0; 1802} 1803 1804static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1805{ 1806 struct mt_device *td = hid_get_drvdata(hdev); 1807 1808 /* High latency is desirable for power savings during S3/S0ix */ 1809 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1810 !hid_hw_may_wakeup(hdev)) 1811 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false); 1812 else 1813 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true); 1814 1815 return 0; 1816} 1817 1818static int mt_reset_resume(struct hid_device *hdev) 1819{ 1820 mt_release_contacts(hdev); 1821 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1822 return 0; 1823} 1824 1825static int mt_resume(struct hid_device *hdev) 1826{ 1827 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1828 * It should be safe to send it to other devices too. 1829 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1830 1831 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1832 1833 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1834 1835 return 0; 1836} 1837 1838static void mt_remove(struct hid_device *hdev) 1839{ 1840 struct mt_device *td = hid_get_drvdata(hdev); 1841 1842 del_timer_sync(&td->release_timer); 1843 1844 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1845 hid_hw_stop(hdev); 1846} 1847 1848/* 1849 * This list contains only: 1850 * - VID/PID of products not working with the default multitouch handling 1851 * - 2 generic rules. 1852 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1853 */ 1854static const struct hid_device_id mt_devices[] = { 1855 1856 /* 3M panels */ 1857 { .driver_data = MT_CLS_3M, 1858 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1859 USB_DEVICE_ID_3M1968) }, 1860 { .driver_data = MT_CLS_3M, 1861 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1862 USB_DEVICE_ID_3M2256) }, 1863 { .driver_data = MT_CLS_3M, 1864 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1865 USB_DEVICE_ID_3M3266) }, 1866 1867 /* Anton devices */ 1868 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1869 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1870 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1871 1872 /* Asus T101HA */ 1873 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 1874 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1875 USB_VENDOR_ID_ASUSTEK, 1876 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 1877 1878 /* Asus T304UA */ 1879 { .driver_data = MT_CLS_ASUS, 1880 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1881 USB_VENDOR_ID_ASUSTEK, 1882 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1883 1884 /* Atmel panels */ 1885 { .driver_data = MT_CLS_SERIAL, 1886 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1887 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1888 1889 /* Baanto multitouch devices */ 1890 { .driver_data = MT_CLS_NSMU, 1891 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1892 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1893 1894 /* Cando panels */ 1895 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1896 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1897 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1898 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1899 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1900 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1901 1902 /* Chunghwa Telecom touch panels */ 1903 { .driver_data = MT_CLS_NSMU, 1904 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1905 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1906 1907 /* CJTouch panels */ 1908 { .driver_data = MT_CLS_NSMU, 1909 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1910 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1911 { .driver_data = MT_CLS_NSMU, 1912 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1913 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1914 1915 /* CVTouch panels */ 1916 { .driver_data = MT_CLS_NSMU, 1917 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1918 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1919 1920 /* eGalax devices (SAW) */ 1921 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1922 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1923 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 1924 1925 /* eGalax devices (resistive) */ 1926 { .driver_data = MT_CLS_EGALAX, 1927 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1928 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1929 { .driver_data = MT_CLS_EGALAX, 1930 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1931 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1932 1933 /* eGalax devices (capacitive) */ 1934 { .driver_data = MT_CLS_EGALAX_SERIAL, 1935 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1936 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1937 { .driver_data = MT_CLS_EGALAX, 1938 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1939 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1940 { .driver_data = MT_CLS_EGALAX_SERIAL, 1941 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1942 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1943 { .driver_data = MT_CLS_EGALAX_SERIAL, 1944 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1945 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1946 { .driver_data = MT_CLS_EGALAX_SERIAL, 1947 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1948 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1949 { .driver_data = MT_CLS_EGALAX_SERIAL, 1950 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1951 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1952 { .driver_data = MT_CLS_EGALAX, 1953 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1954 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1955 { .driver_data = MT_CLS_EGALAX, 1956 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1957 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1958 { .driver_data = MT_CLS_EGALAX_SERIAL, 1959 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1960 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1961 { .driver_data = MT_CLS_EGALAX, 1962 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1963 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1964 { .driver_data = MT_CLS_EGALAX, 1965 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1966 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1967 { .driver_data = MT_CLS_EGALAX, 1968 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1969 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1970 { .driver_data = MT_CLS_EGALAX, 1971 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1972 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1973 { .driver_data = MT_CLS_EGALAX_SERIAL, 1974 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1975 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1976 { .driver_data = MT_CLS_EGALAX_SERIAL, 1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1979 { .driver_data = MT_CLS_EGALAX_SERIAL, 1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1982 { .driver_data = MT_CLS_EGALAX, 1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 1985 1986 /* Elan devices */ 1987 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1988 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1989 USB_VENDOR_ID_ELAN, 0x313a) }, 1990 1991 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1992 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1993 USB_VENDOR_ID_ELAN, 0x3148) }, 1994 1995 /* Elitegroup panel */ 1996 { .driver_data = MT_CLS_SERIAL, 1997 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1998 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1999 2000 /* Flatfrog Panels */ 2001 { .driver_data = MT_CLS_FLATFROG, 2002 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2003 USB_DEVICE_ID_MULTITOUCH_3200) }, 2004 2005 /* FocalTech Panels */ 2006 { .driver_data = MT_CLS_SERIAL, 2007 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2008 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2009 2010 /* GeneralTouch panel */ 2011 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2012 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2013 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2014 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2015 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2016 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2017 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2018 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2019 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2020 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2021 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2022 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2023 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2024 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2025 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2026 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2027 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2028 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2029 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2030 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2031 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2032 2033 /* Gametel game controller */ 2034 { .driver_data = MT_CLS_NSMU, 2035 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2036 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2037 2038 /* GoodTouch panels */ 2039 { .driver_data = MT_CLS_NSMU, 2040 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2041 USB_DEVICE_ID_GOODTOUCH_000f) }, 2042 2043 /* Hanvon panels */ 2044 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2045 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2046 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2047 2048 /* HONOR GLO-GXXX panel */ 2049 { .driver_data = MT_CLS_VTL, 2050 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2051 0x347d, 0x7853) }, 2052 2053 /* Ilitek dual touch panel */ 2054 { .driver_data = MT_CLS_NSMU, 2055 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2056 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2057 2058 /* LG Melfas panel */ 2059 { .driver_data = MT_CLS_LG, 2060 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2061 USB_DEVICE_ID_LG_MELFAS_MT) }, 2062 { .driver_data = MT_CLS_LG, 2063 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2064 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2065 2066 /* Lenovo X1 TAB Gen 2 */ 2067 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2068 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2069 USB_VENDOR_ID_LENOVO, 2070 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2071 2072 /* Lenovo X1 TAB Gen 3 */ 2073 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2074 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2075 USB_VENDOR_ID_LENOVO, 2076 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2077 2078 /* Lenovo X12 TAB Gen 1 */ 2079 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2080 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2081 USB_VENDOR_ID_LENOVO, 2082 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2083 2084 /* MosArt panels */ 2085 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2086 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2087 USB_DEVICE_ID_ASUS_T91MT)}, 2088 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2089 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2090 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2091 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2092 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2093 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2094 2095 /* Novatek Panel */ 2096 { .driver_data = MT_CLS_NSMU, 2097 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2098 USB_DEVICE_ID_NOVATEK_PCT) }, 2099 2100 /* Ntrig Panel */ 2101 { .driver_data = MT_CLS_NSMU, 2102 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2103 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2104 2105 /* Panasonic panels */ 2106 { .driver_data = MT_CLS_PANASONIC, 2107 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2108 USB_DEVICE_ID_PANABOARD_UBT780) }, 2109 { .driver_data = MT_CLS_PANASONIC, 2110 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2111 USB_DEVICE_ID_PANABOARD_UBT880) }, 2112 2113 /* PixArt optical touch screen */ 2114 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2115 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2116 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2117 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2118 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2119 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2120 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2121 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2122 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2123 2124 /* PixCir-based panels */ 2125 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2126 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2127 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2128 2129 /* Quanta-based panels */ 2130 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2131 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2132 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2133 2134 /* Razer touchpads */ 2135 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2136 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2137 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2138 2139 /* Smart Tech panels */ 2140 { .driver_data = MT_CLS_SMART_TECH, 2141 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2142 2143 /* Stantum panels */ 2144 { .driver_data = MT_CLS_CONFIDENCE, 2145 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2146 USB_DEVICE_ID_MTP_STM)}, 2147 2148 /* Synaptics devices */ 2149 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2150 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2151 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2152 2153 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2154 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2155 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2156 2157 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2158 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2159 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2160 2161 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2162 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2163 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2164 2165 /* TopSeed panels */ 2166 { .driver_data = MT_CLS_TOPSEED, 2167 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2168 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2169 2170 /* Touch International panels */ 2171 { .driver_data = MT_CLS_NSMU, 2172 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2173 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2174 2175 /* Unitec panels */ 2176 { .driver_data = MT_CLS_NSMU, 2177 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2178 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2179 { .driver_data = MT_CLS_NSMU, 2180 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2181 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2182 2183 /* VTL panels */ 2184 { .driver_data = MT_CLS_VTL, 2185 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2186 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2187 2188 /* Winbond Electronics Corp. */ 2189 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2190 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2191 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2192 2193 /* Wistron panels */ 2194 { .driver_data = MT_CLS_NSMU, 2195 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2196 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2197 2198 /* XAT */ 2199 { .driver_data = MT_CLS_NSMU, 2200 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2201 USB_DEVICE_ID_XAT_CSR) }, 2202 2203 /* Xiroku */ 2204 { .driver_data = MT_CLS_NSMU, 2205 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2206 USB_DEVICE_ID_XIROKU_SPX) }, 2207 { .driver_data = MT_CLS_NSMU, 2208 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2209 USB_DEVICE_ID_XIROKU_MPX) }, 2210 { .driver_data = MT_CLS_NSMU, 2211 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2212 USB_DEVICE_ID_XIROKU_CSR) }, 2213 { .driver_data = MT_CLS_NSMU, 2214 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2215 USB_DEVICE_ID_XIROKU_SPX1) }, 2216 { .driver_data = MT_CLS_NSMU, 2217 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2218 USB_DEVICE_ID_XIROKU_MPX1) }, 2219 { .driver_data = MT_CLS_NSMU, 2220 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2221 USB_DEVICE_ID_XIROKU_CSR1) }, 2222 { .driver_data = MT_CLS_NSMU, 2223 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2224 USB_DEVICE_ID_XIROKU_SPX2) }, 2225 { .driver_data = MT_CLS_NSMU, 2226 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2227 USB_DEVICE_ID_XIROKU_MPX2) }, 2228 { .driver_data = MT_CLS_NSMU, 2229 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2230 USB_DEVICE_ID_XIROKU_CSR2) }, 2231 2232 /* Google MT devices */ 2233 { .driver_data = MT_CLS_GOOGLE, 2234 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2235 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2236 { .driver_data = MT_CLS_GOOGLE, 2237 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2238 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2239 2240 /* Generic MT device */ 2241 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2242 2243 /* Generic Win 8 certified MT device */ 2244 { .driver_data = MT_CLS_WIN_8, 2245 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2246 HID_ANY_ID, HID_ANY_ID) }, 2247 { } 2248}; 2249MODULE_DEVICE_TABLE(hid, mt_devices); 2250 2251static const struct hid_usage_id mt_grabbed_usages[] = { 2252 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2253 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2254}; 2255 2256static struct hid_driver mt_driver = { 2257 .name = "hid-multitouch", 2258 .id_table = mt_devices, 2259 .probe = mt_probe, 2260 .remove = mt_remove, 2261 .input_mapping = mt_input_mapping, 2262 .input_mapped = mt_input_mapped, 2263 .input_configured = mt_input_configured, 2264 .feature_mapping = mt_feature_mapping, 2265 .usage_table = mt_grabbed_usages, 2266 .event = mt_event, 2267 .report = mt_report, 2268 .suspend = pm_ptr(mt_suspend), 2269 .reset_resume = pm_ptr(mt_reset_resume), 2270 .resume = pm_ptr(mt_resume), 2271}; 2272module_hid_driver(mt_driver); 2273