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 44 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 45 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 46 MODULE_DESCRIPTION("HID multitouch panels"); 47 MODULE_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 72 #define MT_INPUTMODE_TOUCHSCREEN 0x02 73 #define MT_INPUTMODE_TOUCHPAD 0x03 74 75 #define MT_BUTTONTYPE_CLICKPAD 0 76 77 enum latency_mode { 78 HID_LATENCY_NORMAL = 0, 79 HID_LATENCY_HIGH = 1, 80 }; 81 82 #define MT_IO_FLAGS_RUNNING 0 83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 84 #define MT_IO_FLAGS_PENDING_SLOTS 2 85 86 static const bool mtrue = true; /* default for true */ 87 static const bool mfalse; /* default for false */ 88 static const __s32 mzero; /* default for 0 */ 89 90 #define DEFAULT_TRUE ((void *)&mtrue) 91 #define DEFAULT_FALSE ((void *)&mfalse) 92 #define DEFAULT_ZERO ((void *)&mzero) 93 94 struct mt_usages { 95 struct list_head list; 96 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 97 __s32 *contactid; /* the device ContactID assigned to this slot */ 98 bool *tip_state; /* is the touch valid? */ 99 bool *inrange_state; /* is the finger in proximity of the sensor? */ 100 bool *confidence_state; /* is the touch made by a finger? */ 101 }; 102 103 struct mt_application { 104 struct list_head list; 105 unsigned int application; 106 struct list_head mt_usages; /* mt usages list */ 107 108 __s32 quirks; 109 110 __s32 *scantime; /* scantime reported */ 111 __s32 scantime_logical_max; /* max value for raw scantime */ 112 113 __s32 *raw_cc; /* contact count in the report */ 114 int left_button_state; /* left button state */ 115 unsigned int mt_flags; /* flags to pass to input-mt */ 116 117 unsigned long *pending_palm_slots; /* slots where we reported palm 118 * and need to release */ 119 120 __u8 num_received; /* how many contacts we received */ 121 __u8 num_expected; /* expected last contact index */ 122 __u8 buttons_count; /* number of physical buttons per touchpad */ 123 __u8 touches_by_report; /* how many touches are present in one report: 124 * 1 means we should use a serial protocol 125 * > 1 means hybrid (multitouch) protocol 126 */ 127 128 __s32 dev_time; /* the scan time provided by the device */ 129 unsigned long jiffies; /* the frame's jiffies */ 130 int timestamp; /* the timestamp to be sent */ 131 int prev_scantime; /* scantime reported previously */ 132 133 bool have_contact_count; 134 }; 135 136 struct mt_class { 137 __s32 name; /* MT_CLS */ 138 __s32 quirks; 139 __s32 sn_move; /* Signal/noise ratio for move events */ 140 __s32 sn_width; /* Signal/noise ratio for width events */ 141 __s32 sn_height; /* Signal/noise ratio for height events */ 142 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 143 __u8 maxcontacts; 144 bool is_indirect; /* true for touchpads */ 145 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 146 }; 147 148 struct mt_report_data { 149 struct list_head list; 150 struct hid_report *report; 151 struct mt_application *application; 152 bool is_mt_collection; 153 }; 154 155 struct mt_device { 156 struct mt_class mtclass; /* our mt device class */ 157 struct timer_list release_timer; /* to release sticky fingers */ 158 struct hid_device *hdev; /* hid_device we're attached to */ 159 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 160 __u8 inputmode_value; /* InputMode HID feature value */ 161 __u8 maxcontacts; 162 bool is_buttonpad; /* is this device a button pad? */ 163 bool serial_maybe; /* need to check for serial protocol */ 164 165 struct list_head applications; 166 struct list_head reports; 167 }; 168 169 static void mt_post_parse_default_settings(struct mt_device *td, 170 struct mt_application *app); 171 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 172 173 /* classes of device behavior */ 174 #define MT_CLS_DEFAULT 0x0001 175 176 #define MT_CLS_SERIAL 0x0002 177 #define MT_CLS_CONFIDENCE 0x0003 178 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 179 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 180 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 181 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 182 /* reserved 0x0008 */ 183 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 184 #define MT_CLS_NSMU 0x000a 185 /* reserved 0x0010 */ 186 /* reserved 0x0011 */ 187 #define MT_CLS_WIN_8 0x0012 188 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 189 #define MT_CLS_WIN_8_DUAL 0x0014 190 191 /* vendor specific classes */ 192 #define MT_CLS_3M 0x0101 193 /* reserved 0x0102 */ 194 #define MT_CLS_EGALAX 0x0103 195 #define MT_CLS_EGALAX_SERIAL 0x0104 196 #define MT_CLS_TOPSEED 0x0105 197 #define MT_CLS_PANASONIC 0x0106 198 #define MT_CLS_FLATFROG 0x0107 199 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 200 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 201 #define MT_CLS_LG 0x010a 202 #define MT_CLS_ASUS 0x010b 203 #define MT_CLS_VTL 0x0110 204 #define MT_CLS_GOOGLE 0x0111 205 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 206 207 #define MT_DEFAULT_MAXCONTACT 10 208 #define MT_MAX_MAXCONTACT 250 209 210 /* 211 * Resync device and local timestamps after that many microseconds without 212 * receiving data. 213 */ 214 #define MAX_TIMESTAMP_INTERVAL 1000000 215 216 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 217 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 218 219 /* 220 * these device-dependent functions determine what slot corresponds 221 * to a valid contact that was just read. 222 */ 223 224 static int cypress_compute_slot(struct mt_application *application, 225 struct mt_usages *slot) 226 { 227 if (*slot->contactid != 0 || application->num_received == 0) 228 return *slot->contactid; 229 else 230 return -1; 231 } 232 233 static const struct mt_class mt_classes[] = { 234 { .name = MT_CLS_DEFAULT, 235 .quirks = MT_QUIRK_ALWAYS_VALID | 236 MT_QUIRK_CONTACT_CNT_ACCURATE }, 237 { .name = MT_CLS_NSMU, 238 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 239 { .name = MT_CLS_SERIAL, 240 .quirks = MT_QUIRK_ALWAYS_VALID}, 241 { .name = MT_CLS_CONFIDENCE, 242 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 243 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 245 MT_QUIRK_SLOT_IS_CONTACTID }, 246 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 248 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 249 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 250 .quirks = MT_QUIRK_VALID_IS_INRANGE | 251 MT_QUIRK_SLOT_IS_CONTACTID, 252 .maxcontacts = 2 }, 253 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 254 .quirks = MT_QUIRK_VALID_IS_INRANGE | 255 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 256 .maxcontacts = 2 }, 257 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 258 .quirks = MT_QUIRK_VALID_IS_INRANGE | 259 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 260 { .name = MT_CLS_WIN_8, 261 .quirks = MT_QUIRK_ALWAYS_VALID | 262 MT_QUIRK_IGNORE_DUPLICATES | 263 MT_QUIRK_HOVERING | 264 MT_QUIRK_CONTACT_CNT_ACCURATE | 265 MT_QUIRK_STICKY_FINGERS | 266 MT_QUIRK_WIN8_PTP_BUTTONS }, 267 { .name = MT_CLS_EXPORT_ALL_INPUTS, 268 .quirks = MT_QUIRK_ALWAYS_VALID | 269 MT_QUIRK_CONTACT_CNT_ACCURATE, 270 .export_all_inputs = true }, 271 { .name = MT_CLS_WIN_8_DUAL, 272 .quirks = MT_QUIRK_ALWAYS_VALID | 273 MT_QUIRK_IGNORE_DUPLICATES | 274 MT_QUIRK_HOVERING | 275 MT_QUIRK_CONTACT_CNT_ACCURATE | 276 MT_QUIRK_WIN8_PTP_BUTTONS, 277 .export_all_inputs = true }, 278 279 /* 280 * vendor specific classes 281 */ 282 { .name = MT_CLS_3M, 283 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 284 MT_QUIRK_SLOT_IS_CONTACTID | 285 MT_QUIRK_TOUCH_SIZE_SCALING, 286 .sn_move = 2048, 287 .sn_width = 128, 288 .sn_height = 128, 289 .maxcontacts = 60, 290 }, 291 { .name = MT_CLS_EGALAX, 292 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 293 MT_QUIRK_VALID_IS_INRANGE, 294 .sn_move = 4096, 295 .sn_pressure = 32, 296 }, 297 { .name = MT_CLS_EGALAX_SERIAL, 298 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 299 MT_QUIRK_ALWAYS_VALID, 300 .sn_move = 4096, 301 .sn_pressure = 32, 302 }, 303 { .name = MT_CLS_TOPSEED, 304 .quirks = MT_QUIRK_ALWAYS_VALID, 305 .is_indirect = true, 306 .maxcontacts = 2, 307 }, 308 { .name = MT_CLS_PANASONIC, 309 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 310 .maxcontacts = 4 }, 311 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 312 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 313 MT_QUIRK_VALID_IS_INRANGE | 314 MT_QUIRK_SLOT_IS_CONTACTID, 315 .maxcontacts = 2 316 }, 317 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 318 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 319 MT_QUIRK_SLOT_IS_CONTACTID 320 }, 321 322 { .name = MT_CLS_FLATFROG, 323 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 324 MT_QUIRK_NO_AREA, 325 .sn_move = 2048, 326 .maxcontacts = 40, 327 }, 328 { .name = MT_CLS_LG, 329 .quirks = MT_QUIRK_ALWAYS_VALID | 330 MT_QUIRK_FIX_CONST_CONTACT_ID | 331 MT_QUIRK_IGNORE_DUPLICATES | 332 MT_QUIRK_HOVERING | 333 MT_QUIRK_CONTACT_CNT_ACCURATE }, 334 { .name = MT_CLS_ASUS, 335 .quirks = MT_QUIRK_ALWAYS_VALID | 336 MT_QUIRK_CONTACT_CNT_ACCURATE | 337 MT_QUIRK_ASUS_CUSTOM_UP }, 338 { .name = MT_CLS_VTL, 339 .quirks = MT_QUIRK_ALWAYS_VALID | 340 MT_QUIRK_CONTACT_CNT_ACCURATE | 341 MT_QUIRK_FORCE_GET_FEATURE, 342 }, 343 { .name = MT_CLS_GOOGLE, 344 .quirks = MT_QUIRK_ALWAYS_VALID | 345 MT_QUIRK_CONTACT_CNT_ACCURATE | 346 MT_QUIRK_SLOT_IS_CONTACTID | 347 MT_QUIRK_HOVERING 348 }, 349 { .name = MT_CLS_RAZER_BLADE_STEALTH, 350 .quirks = MT_QUIRK_ALWAYS_VALID | 351 MT_QUIRK_IGNORE_DUPLICATES | 352 MT_QUIRK_HOVERING | 353 MT_QUIRK_CONTACT_CNT_ACCURATE | 354 MT_QUIRK_WIN8_PTP_BUTTONS, 355 }, 356 { } 357 }; 358 359 static ssize_t mt_show_quirks(struct device *dev, 360 struct device_attribute *attr, 361 char *buf) 362 { 363 struct hid_device *hdev = to_hid_device(dev); 364 struct mt_device *td = hid_get_drvdata(hdev); 365 366 return sprintf(buf, "%u\n", td->mtclass.quirks); 367 } 368 369 static ssize_t mt_set_quirks(struct device *dev, 370 struct device_attribute *attr, 371 const char *buf, size_t count) 372 { 373 struct hid_device *hdev = to_hid_device(dev); 374 struct mt_device *td = hid_get_drvdata(hdev); 375 struct mt_application *application; 376 377 unsigned long val; 378 379 if (kstrtoul(buf, 0, &val)) 380 return -EINVAL; 381 382 td->mtclass.quirks = val; 383 384 list_for_each_entry(application, &td->applications, list) { 385 application->quirks = val; 386 if (!application->have_contact_count) 387 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 388 } 389 390 return count; 391 } 392 393 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 394 395 static struct attribute *sysfs_attrs[] = { 396 &dev_attr_quirks.attr, 397 NULL 398 }; 399 400 static const struct attribute_group mt_attribute_group = { 401 .attrs = sysfs_attrs 402 }; 403 404 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 405 { 406 int ret; 407 u32 size = hid_report_len(report); 408 u8 *buf; 409 410 /* 411 * Do not fetch the feature report if the device has been explicitly 412 * marked as non-capable. 413 */ 414 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 415 return; 416 417 buf = hid_alloc_report_buf(report, GFP_KERNEL); 418 if (!buf) 419 return; 420 421 ret = hid_hw_raw_request(hdev, report->id, buf, size, 422 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 423 if (ret < 0) { 424 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 425 report->id); 426 } else { 427 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 428 size, 0); 429 if (ret) 430 dev_warn(&hdev->dev, "failed to report feature\n"); 431 } 432 433 kfree(buf); 434 } 435 436 static void mt_feature_mapping(struct hid_device *hdev, 437 struct hid_field *field, struct hid_usage *usage) 438 { 439 struct mt_device *td = hid_get_drvdata(hdev); 440 441 switch (usage->hid) { 442 case HID_DG_CONTACTMAX: 443 mt_get_feature(hdev, field->report); 444 445 td->maxcontacts = field->value[0]; 446 if (!td->maxcontacts && 447 field->logical_maximum <= MT_MAX_MAXCONTACT) 448 td->maxcontacts = field->logical_maximum; 449 if (td->mtclass.maxcontacts) 450 /* check if the maxcontacts is given by the class */ 451 td->maxcontacts = td->mtclass.maxcontacts; 452 453 break; 454 case HID_DG_BUTTONTYPE: 455 if (usage->usage_index >= field->report_count) { 456 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 457 break; 458 } 459 460 mt_get_feature(hdev, field->report); 461 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 462 td->is_buttonpad = true; 463 464 break; 465 case 0xff0000c5: 466 /* Retrieve the Win8 blob once to enable some devices */ 467 if (usage->usage_index == 0) 468 mt_get_feature(hdev, field->report); 469 break; 470 } 471 } 472 473 static void set_abs(struct input_dev *input, unsigned int code, 474 struct hid_field *field, int snratio) 475 { 476 int fmin = field->logical_minimum; 477 int fmax = field->logical_maximum; 478 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 479 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 480 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 481 } 482 483 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 484 struct mt_application *application) 485 { 486 struct mt_usages *usage; 487 488 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 489 if (!usage) 490 return NULL; 491 492 /* set some defaults so we do not need to check for null pointers */ 493 usage->x = DEFAULT_ZERO; 494 usage->y = DEFAULT_ZERO; 495 usage->cx = DEFAULT_ZERO; 496 usage->cy = DEFAULT_ZERO; 497 usage->p = DEFAULT_ZERO; 498 usage->w = DEFAULT_ZERO; 499 usage->h = DEFAULT_ZERO; 500 usage->a = DEFAULT_ZERO; 501 usage->contactid = DEFAULT_ZERO; 502 usage->tip_state = DEFAULT_FALSE; 503 usage->inrange_state = DEFAULT_FALSE; 504 usage->confidence_state = DEFAULT_TRUE; 505 506 list_add_tail(&usage->list, &application->mt_usages); 507 508 return usage; 509 } 510 511 static struct mt_application *mt_allocate_application(struct mt_device *td, 512 unsigned int application) 513 { 514 struct mt_application *mt_application; 515 516 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 517 GFP_KERNEL); 518 if (!mt_application) 519 return NULL; 520 521 mt_application->application = application; 522 INIT_LIST_HEAD(&mt_application->mt_usages); 523 524 if (application == HID_DG_TOUCHSCREEN) 525 mt_application->mt_flags |= INPUT_MT_DIRECT; 526 527 /* 528 * Model touchscreens providing buttons as touchpads. 529 */ 530 if (application == HID_DG_TOUCHPAD) { 531 mt_application->mt_flags |= INPUT_MT_POINTER; 532 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 533 } 534 535 mt_application->scantime = DEFAULT_ZERO; 536 mt_application->raw_cc = DEFAULT_ZERO; 537 mt_application->quirks = td->mtclass.quirks; 538 539 list_add_tail(&mt_application->list, &td->applications); 540 541 return mt_application; 542 } 543 544 static struct mt_application *mt_find_application(struct mt_device *td, 545 unsigned int application) 546 { 547 struct mt_application *tmp, *mt_application = NULL; 548 549 list_for_each_entry(tmp, &td->applications, list) { 550 if (application == tmp->application) { 551 mt_application = tmp; 552 break; 553 } 554 } 555 556 if (!mt_application) 557 mt_application = mt_allocate_application(td, application); 558 559 return mt_application; 560 } 561 562 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 563 struct hid_report *report) 564 { 565 struct mt_report_data *rdata; 566 struct hid_field *field; 567 int r, n; 568 569 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 570 if (!rdata) 571 return NULL; 572 573 rdata->report = report; 574 rdata->application = mt_find_application(td, report->application); 575 576 if (!rdata->application) { 577 devm_kfree(&td->hdev->dev, rdata); 578 return NULL; 579 } 580 581 for (r = 0; r < report->maxfield; r++) { 582 field = report->field[r]; 583 584 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 585 continue; 586 587 for (n = 0; n < field->report_count; n++) { 588 if (field->usage[n].hid == HID_DG_CONTACTID) 589 rdata->is_mt_collection = true; 590 } 591 } 592 593 list_add_tail(&rdata->list, &td->reports); 594 595 return rdata; 596 } 597 598 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 599 struct hid_report *report) 600 { 601 struct mt_report_data *tmp, *rdata = NULL; 602 603 list_for_each_entry(tmp, &td->reports, list) { 604 if (report == tmp->report) { 605 rdata = tmp; 606 break; 607 } 608 } 609 610 if (!rdata) 611 rdata = mt_allocate_report_data(td, report); 612 613 return rdata; 614 } 615 616 static void mt_store_field(struct hid_device *hdev, 617 struct mt_application *application, 618 __s32 *value, 619 size_t offset) 620 { 621 struct mt_usages *usage; 622 __s32 **target; 623 624 if (list_empty(&application->mt_usages)) 625 usage = mt_allocate_usage(hdev, application); 626 else 627 usage = list_last_entry(&application->mt_usages, 628 struct mt_usages, 629 list); 630 631 if (!usage) 632 return; 633 634 target = (__s32 **)((char *)usage + offset); 635 636 /* the value has already been filled, create a new slot */ 637 if (*target != DEFAULT_TRUE && 638 *target != DEFAULT_FALSE && 639 *target != DEFAULT_ZERO) { 640 usage = mt_allocate_usage(hdev, application); 641 if (!usage) 642 return; 643 644 target = (__s32 **)((char *)usage + offset); 645 } 646 647 *target = value; 648 } 649 650 #define MT_STORE_FIELD(__name) \ 651 mt_store_field(hdev, app, \ 652 &field->value[usage->usage_index], \ 653 offsetof(struct mt_usages, __name)) 654 655 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 656 struct hid_field *field, struct hid_usage *usage, 657 unsigned long **bit, int *max, struct mt_application *app) 658 { 659 struct mt_device *td = hid_get_drvdata(hdev); 660 struct mt_class *cls = &td->mtclass; 661 int code; 662 struct hid_usage *prev_usage = NULL; 663 664 /* 665 * Model touchscreens providing buttons as touchpads. 666 */ 667 if (field->application == HID_DG_TOUCHSCREEN && 668 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 669 app->mt_flags |= INPUT_MT_POINTER; 670 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 671 } 672 673 /* count the buttons on touchpads */ 674 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 675 app->buttons_count++; 676 677 if (usage->usage_index) 678 prev_usage = &field->usage[usage->usage_index - 1]; 679 680 switch (usage->hid & HID_USAGE_PAGE) { 681 682 case HID_UP_GENDESK: 683 switch (usage->hid) { 684 case HID_GD_X: 685 if (prev_usage && (prev_usage->hid == usage->hid)) { 686 code = ABS_MT_TOOL_X; 687 MT_STORE_FIELD(cx); 688 } else { 689 code = ABS_MT_POSITION_X; 690 MT_STORE_FIELD(x); 691 } 692 693 set_abs(hi->input, code, field, cls->sn_move); 694 695 /* 696 * A system multi-axis that exports X and Y has a high 697 * chance of being used directly on a surface 698 */ 699 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 700 __set_bit(INPUT_PROP_DIRECT, 701 hi->input->propbit); 702 input_set_abs_params(hi->input, 703 ABS_MT_TOOL_TYPE, 704 MT_TOOL_DIAL, 705 MT_TOOL_DIAL, 0, 0); 706 } 707 708 return 1; 709 case HID_GD_Y: 710 if (prev_usage && (prev_usage->hid == usage->hid)) { 711 code = ABS_MT_TOOL_Y; 712 MT_STORE_FIELD(cy); 713 } else { 714 code = ABS_MT_POSITION_Y; 715 MT_STORE_FIELD(y); 716 } 717 718 set_abs(hi->input, code, field, cls->sn_move); 719 720 return 1; 721 } 722 return 0; 723 724 case HID_UP_DIGITIZER: 725 switch (usage->hid) { 726 case HID_DG_INRANGE: 727 if (app->quirks & MT_QUIRK_HOVERING) { 728 input_set_abs_params(hi->input, 729 ABS_MT_DISTANCE, 0, 1, 0, 0); 730 } 731 MT_STORE_FIELD(inrange_state); 732 return 1; 733 case HID_DG_CONFIDENCE: 734 if ((cls->name == MT_CLS_WIN_8 || 735 cls->name == MT_CLS_WIN_8_DUAL) && 736 (field->application == HID_DG_TOUCHPAD || 737 field->application == HID_DG_TOUCHSCREEN)) 738 app->quirks |= MT_QUIRK_CONFIDENCE; 739 740 if (app->quirks & MT_QUIRK_CONFIDENCE) 741 input_set_abs_params(hi->input, 742 ABS_MT_TOOL_TYPE, 743 MT_TOOL_FINGER, 744 MT_TOOL_PALM, 0, 0); 745 746 MT_STORE_FIELD(confidence_state); 747 return 1; 748 case HID_DG_TIPSWITCH: 749 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 750 input_set_capability(hi->input, 751 EV_KEY, BTN_TOUCH); 752 MT_STORE_FIELD(tip_state); 753 return 1; 754 case HID_DG_CONTACTID: 755 MT_STORE_FIELD(contactid); 756 app->touches_by_report++; 757 return 1; 758 case HID_DG_WIDTH: 759 if (!(app->quirks & MT_QUIRK_NO_AREA)) 760 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 761 cls->sn_width); 762 MT_STORE_FIELD(w); 763 return 1; 764 case HID_DG_HEIGHT: 765 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 766 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 767 cls->sn_height); 768 769 /* 770 * Only set ABS_MT_ORIENTATION if it is not 771 * already set by the HID_DG_AZIMUTH usage. 772 */ 773 if (!test_bit(ABS_MT_ORIENTATION, 774 hi->input->absbit)) 775 input_set_abs_params(hi->input, 776 ABS_MT_ORIENTATION, 0, 1, 0, 0); 777 } 778 MT_STORE_FIELD(h); 779 return 1; 780 case HID_DG_TIPPRESSURE: 781 set_abs(hi->input, ABS_MT_PRESSURE, field, 782 cls->sn_pressure); 783 MT_STORE_FIELD(p); 784 return 1; 785 case HID_DG_SCANTIME: 786 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 787 app->scantime = &field->value[usage->usage_index]; 788 app->scantime_logical_max = field->logical_maximum; 789 return 1; 790 case HID_DG_CONTACTCOUNT: 791 app->have_contact_count = true; 792 app->raw_cc = &field->value[usage->usage_index]; 793 return 1; 794 case HID_DG_AZIMUTH: 795 /* 796 * Azimuth has the range of [0, MAX) representing a full 797 * revolution. Set ABS_MT_ORIENTATION to a quarter of 798 * MAX according the definition of ABS_MT_ORIENTATION 799 */ 800 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 801 -field->logical_maximum / 4, 802 field->logical_maximum / 4, 803 cls->sn_move ? 804 field->logical_maximum / cls->sn_move : 0, 0); 805 MT_STORE_FIELD(a); 806 return 1; 807 case HID_DG_CONTACTMAX: 808 /* contact max are global to the report */ 809 return -1; 810 case HID_DG_TOUCH: 811 /* Legacy devices use TIPSWITCH and not TOUCH. 812 * Let's just ignore this field. */ 813 return -1; 814 } 815 /* let hid-input decide for the others */ 816 return 0; 817 818 case HID_UP_BUTTON: 819 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 820 /* 821 * MS PTP spec says that external buttons left and right have 822 * usages 2 and 3. 823 */ 824 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 825 field->application == HID_DG_TOUCHPAD && 826 (usage->hid & HID_USAGE) > 1) 827 code--; 828 829 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 830 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 831 832 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 833 input_set_capability(hi->input, EV_KEY, code); 834 return 1; 835 836 case 0xff000000: 837 /* we do not want to map these: no input-oriented meaning */ 838 return -1; 839 } 840 841 return 0; 842 } 843 844 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 845 struct mt_usages *slot, 846 struct input_dev *input) 847 { 848 __s32 quirks = app->quirks; 849 850 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 851 return *slot->contactid; 852 853 if (quirks & MT_QUIRK_CYPRESS) 854 return cypress_compute_slot(app, slot); 855 856 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 857 return app->num_received; 858 859 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 860 return *slot->contactid - 1; 861 862 return input_mt_get_slot_by_key(input, *slot->contactid); 863 } 864 865 static void mt_release_pending_palms(struct mt_device *td, 866 struct mt_application *app, 867 struct input_dev *input) 868 { 869 int slotnum; 870 bool need_sync = false; 871 872 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 873 clear_bit(slotnum, app->pending_palm_slots); 874 875 input_mt_slot(input, slotnum); 876 input_mt_report_slot_state(input, MT_TOOL_PALM, false); 877 878 need_sync = true; 879 } 880 881 if (need_sync) { 882 input_mt_sync_frame(input); 883 input_sync(input); 884 } 885 } 886 887 /* 888 * this function is called when a whole packet has been received and processed, 889 * so that it can decide what to send to the input layer. 890 */ 891 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 892 struct input_dev *input) 893 { 894 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 895 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 896 897 input_mt_sync_frame(input); 898 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 899 input_sync(input); 900 901 mt_release_pending_palms(td, app, input); 902 903 app->num_received = 0; 904 app->left_button_state = 0; 905 906 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 907 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 908 else 909 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 910 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 911 } 912 913 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 914 { 915 long delta = value - app->prev_scantime; 916 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 917 918 app->jiffies = jiffies; 919 920 if (delta < 0) 921 delta += app->scantime_logical_max; 922 923 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 924 delta *= 100; 925 926 if (jdelta > MAX_TIMESTAMP_INTERVAL) 927 /* No data received for a while, resync the timestamp. */ 928 return 0; 929 else 930 return app->timestamp + delta; 931 } 932 933 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 934 struct hid_usage *usage, __s32 value) 935 { 936 /* we will handle the hidinput part later, now remains hiddev */ 937 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 938 hid->hiddev_hid_event(hid, field, usage, value); 939 940 return 1; 941 } 942 943 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 944 struct mt_application *app, 945 struct mt_usages *slot) 946 { 947 struct input_mt *mt = input->mt; 948 __s32 quirks = app->quirks; 949 bool valid = true; 950 bool confidence_state = true; 951 bool inrange_state = false; 952 int active; 953 int slotnum; 954 int tool = MT_TOOL_FINGER; 955 956 if (!slot) 957 return -EINVAL; 958 959 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 960 app->num_received >= app->num_expected) 961 return -EAGAIN; 962 963 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 964 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 965 valid = *slot->inrange_state; 966 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 967 valid = *slot->tip_state; 968 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 969 valid = *slot->confidence_state; 970 971 if (!valid) 972 return 0; 973 } 974 975 slotnum = mt_compute_slot(td, app, slot, input); 976 if (slotnum < 0 || slotnum >= td->maxcontacts) 977 return 0; 978 979 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 980 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 981 982 if (input_mt_is_active(i_slot) && 983 input_mt_is_used(mt, i_slot)) 984 return -EAGAIN; 985 } 986 987 if (quirks & MT_QUIRK_CONFIDENCE) 988 confidence_state = *slot->confidence_state; 989 990 if (quirks & MT_QUIRK_HOVERING) 991 inrange_state = *slot->inrange_state; 992 993 active = *slot->tip_state || inrange_state; 994 995 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 996 tool = MT_TOOL_DIAL; 997 else if (unlikely(!confidence_state)) { 998 tool = MT_TOOL_PALM; 999 if (!active && 1000 input_mt_is_active(&mt->slots[slotnum])) { 1001 /* 1002 * The non-confidence was reported for 1003 * previously valid contact that is also no 1004 * longer valid. We can't simply report 1005 * lift-off as userspace will not be aware 1006 * of non-confidence, so we need to split 1007 * it into 2 events: active MT_TOOL_PALM 1008 * and a separate liftoff. 1009 */ 1010 active = true; 1011 set_bit(slotnum, app->pending_palm_slots); 1012 } 1013 } 1014 1015 input_mt_slot(input, slotnum); 1016 input_mt_report_slot_state(input, tool, active); 1017 if (active) { 1018 /* this finger is in proximity of the sensor */ 1019 int wide = (*slot->w > *slot->h); 1020 int major = max(*slot->w, *slot->h); 1021 int minor = min(*slot->w, *slot->h); 1022 int orientation = wide; 1023 int max_azimuth; 1024 int azimuth; 1025 1026 if (slot->a != DEFAULT_ZERO) { 1027 /* 1028 * Azimuth is counter-clockwise and ranges from [0, MAX) 1029 * (a full revolution). Convert it to clockwise ranging 1030 * [-MAX/2, MAX/2]. 1031 * 1032 * Note that ABS_MT_ORIENTATION require us to report 1033 * the limit of [-MAX/4, MAX/4], but the value can go 1034 * out of range to [-MAX/2, MAX/2] to report an upside 1035 * down ellipsis. 1036 */ 1037 azimuth = *slot->a; 1038 max_azimuth = input_abs_get_max(input, 1039 ABS_MT_ORIENTATION); 1040 if (azimuth > max_azimuth * 2) 1041 azimuth -= max_azimuth * 4; 1042 orientation = -azimuth; 1043 } 1044 1045 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1046 /* 1047 * divided by two to match visual scale of touch 1048 * for devices with this quirk 1049 */ 1050 major = major >> 1; 1051 minor = minor >> 1; 1052 } 1053 1054 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1055 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1056 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1057 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1058 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1059 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1060 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1061 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1062 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1063 1064 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1065 } 1066 1067 return 0; 1068 } 1069 1070 static void mt_process_mt_event(struct hid_device *hid, 1071 struct mt_application *app, 1072 struct hid_field *field, 1073 struct hid_usage *usage, 1074 __s32 value, 1075 bool first_packet) 1076 { 1077 __s32 quirks = app->quirks; 1078 struct input_dev *input = field->hidinput->input; 1079 1080 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1081 return; 1082 1083 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1084 1085 /* 1086 * For Win8 PTP touchpads we should only look at 1087 * non finger/touch events in the first_packet of a 1088 * (possible) multi-packet frame. 1089 */ 1090 if (!first_packet) 1091 return; 1092 1093 /* 1094 * For Win8 PTP touchpads we map both the clickpad click 1095 * and any "external" left buttons to BTN_LEFT if a 1096 * device claims to have both we need to report 1 for 1097 * BTN_LEFT if either is pressed, so we or all values 1098 * together and report the result in mt_sync_frame(). 1099 */ 1100 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1101 app->left_button_state |= value; 1102 return; 1103 } 1104 } 1105 1106 input_event(input, usage->type, usage->code, value); 1107 } 1108 1109 static void mt_touch_report(struct hid_device *hid, 1110 struct mt_report_data *rdata) 1111 { 1112 struct mt_device *td = hid_get_drvdata(hid); 1113 struct hid_report *report = rdata->report; 1114 struct mt_application *app = rdata->application; 1115 struct hid_field *field; 1116 struct input_dev *input; 1117 struct mt_usages *slot; 1118 bool first_packet; 1119 unsigned count; 1120 int r, n; 1121 int scantime = 0; 1122 int contact_count = -1; 1123 1124 /* sticky fingers release in progress, abort */ 1125 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1126 return; 1127 1128 scantime = *app->scantime; 1129 app->timestamp = mt_compute_timestamp(app, scantime); 1130 if (app->raw_cc != DEFAULT_ZERO) 1131 contact_count = *app->raw_cc; 1132 1133 /* 1134 * Includes multi-packet support where subsequent 1135 * packets are sent with zero contactcount. 1136 */ 1137 if (contact_count >= 0) { 1138 /* 1139 * For Win8 PTPs the first packet (td->num_received == 0) may 1140 * have a contactcount of 0 if there only is a button event. 1141 * We double check that this is not a continuation packet 1142 * of a possible multi-packet frame be checking that the 1143 * timestamp has changed. 1144 */ 1145 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1146 app->num_received == 0 && 1147 app->prev_scantime != scantime) 1148 app->num_expected = contact_count; 1149 /* A non 0 contact count always indicates a first packet */ 1150 else if (contact_count) 1151 app->num_expected = contact_count; 1152 } 1153 app->prev_scantime = scantime; 1154 1155 first_packet = app->num_received == 0; 1156 1157 input = report->field[0]->hidinput->input; 1158 1159 list_for_each_entry(slot, &app->mt_usages, list) { 1160 if (!mt_process_slot(td, input, app, slot)) 1161 app->num_received++; 1162 } 1163 1164 for (r = 0; r < report->maxfield; r++) { 1165 field = report->field[r]; 1166 count = field->report_count; 1167 1168 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1169 continue; 1170 1171 for (n = 0; n < count; n++) 1172 mt_process_mt_event(hid, app, field, 1173 &field->usage[n], field->value[n], 1174 first_packet); 1175 } 1176 1177 if (app->num_received >= app->num_expected) 1178 mt_sync_frame(td, app, input); 1179 1180 /* 1181 * Windows 8 specs says 2 things: 1182 * - once a contact has been reported, it has to be reported in each 1183 * subsequent report 1184 * - the report rate when fingers are present has to be at least 1185 * the refresh rate of the screen, 60 or 120 Hz 1186 * 1187 * I interprete this that the specification forces a report rate of 1188 * at least 60 Hz for a touchscreen to be certified. 1189 * Which means that if we do not get a report whithin 16 ms, either 1190 * something wrong happens, either the touchscreen forgets to send 1191 * a release. Taking a reasonable margin allows to remove issues 1192 * with USB communication or the load of the machine. 1193 * 1194 * Given that Win 8 devices are forced to send a release, this will 1195 * only affect laggish machines and the ones that have a firmware 1196 * defect. 1197 */ 1198 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1199 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1200 mod_timer(&td->release_timer, 1201 jiffies + msecs_to_jiffies(100)); 1202 else 1203 del_timer(&td->release_timer); 1204 } 1205 1206 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1207 } 1208 1209 static int mt_touch_input_configured(struct hid_device *hdev, 1210 struct hid_input *hi, 1211 struct mt_application *app) 1212 { 1213 struct mt_device *td = hid_get_drvdata(hdev); 1214 struct mt_class *cls = &td->mtclass; 1215 struct input_dev *input = hi->input; 1216 int ret; 1217 1218 if (!td->maxcontacts) 1219 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1220 1221 mt_post_parse(td, app); 1222 if (td->serial_maybe) 1223 mt_post_parse_default_settings(td, app); 1224 1225 if (cls->is_indirect) 1226 app->mt_flags |= INPUT_MT_POINTER; 1227 1228 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1229 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1230 1231 /* check for clickpads */ 1232 if ((app->mt_flags & INPUT_MT_POINTER) && 1233 (app->buttons_count == 1)) 1234 td->is_buttonpad = true; 1235 1236 if (td->is_buttonpad) 1237 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1238 1239 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1240 BITS_TO_LONGS(td->maxcontacts), 1241 sizeof(long), 1242 GFP_KERNEL); 1243 if (!app->pending_palm_slots) 1244 return -ENOMEM; 1245 1246 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1247 if (ret) 1248 return ret; 1249 1250 app->mt_flags = 0; 1251 return 0; 1252 } 1253 1254 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1255 max, EV_KEY, (c)) 1256 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1257 struct hid_field *field, struct hid_usage *usage, 1258 unsigned long **bit, int *max) 1259 { 1260 struct mt_device *td = hid_get_drvdata(hdev); 1261 struct mt_application *application; 1262 struct mt_report_data *rdata; 1263 1264 rdata = mt_find_report_data(td, field->report); 1265 if (!rdata) { 1266 hid_err(hdev, "failed to allocate data for report\n"); 1267 return 0; 1268 } 1269 1270 application = rdata->application; 1271 1272 /* 1273 * If mtclass.export_all_inputs is not set, only map fields from 1274 * TouchScreen or TouchPad collections. We need to ignore fields 1275 * that belong to other collections such as Mouse that might have 1276 * the same GenericDesktop usages. 1277 */ 1278 if (!td->mtclass.export_all_inputs && 1279 field->application != HID_DG_TOUCHSCREEN && 1280 field->application != HID_DG_PEN && 1281 field->application != HID_DG_TOUCHPAD && 1282 field->application != HID_GD_KEYBOARD && 1283 field->application != HID_GD_SYSTEM_CONTROL && 1284 field->application != HID_CP_CONSUMER_CONTROL && 1285 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1286 field->application != HID_GD_SYSTEM_MULTIAXIS && 1287 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1288 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1289 return -1; 1290 1291 /* 1292 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1293 * touchpad report descriptor. We need to treat these as an array to 1294 * map usages to input keys. 1295 */ 1296 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1297 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1298 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1299 set_bit(EV_REP, hi->input->evbit); 1300 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1301 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1302 switch (usage->hid & HID_USAGE) { 1303 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1304 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1305 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1306 case 0x6b: mt_map_key_clear(KEY_F21); break; 1307 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1308 default: 1309 return -1; 1310 } 1311 return 1; 1312 } 1313 1314 if (rdata->is_mt_collection) 1315 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1316 application); 1317 1318 /* 1319 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1320 * for the stylus. Overwrite the hid_input application 1321 */ 1322 if (field->physical == HID_DG_STYLUS) 1323 hi->application = HID_DG_STYLUS; 1324 1325 /* let hid-core decide for the others */ 1326 return 0; 1327 } 1328 1329 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1330 struct hid_field *field, struct hid_usage *usage, 1331 unsigned long **bit, int *max) 1332 { 1333 struct mt_device *td = hid_get_drvdata(hdev); 1334 struct mt_report_data *rdata; 1335 1336 rdata = mt_find_report_data(td, field->report); 1337 if (rdata && rdata->is_mt_collection) { 1338 /* We own these mappings, tell hid-input to ignore them */ 1339 return -1; 1340 } 1341 1342 /* let hid-core decide for the others */ 1343 return 0; 1344 } 1345 1346 static int mt_event(struct hid_device *hid, struct hid_field *field, 1347 struct hid_usage *usage, __s32 value) 1348 { 1349 struct mt_device *td = hid_get_drvdata(hid); 1350 struct mt_report_data *rdata; 1351 1352 rdata = mt_find_report_data(td, field->report); 1353 if (rdata && rdata->is_mt_collection) 1354 return mt_touch_event(hid, field, usage, value); 1355 1356 return 0; 1357 } 1358 1359 static void mt_report(struct hid_device *hid, struct hid_report *report) 1360 { 1361 struct mt_device *td = hid_get_drvdata(hid); 1362 struct hid_field *field = report->field[0]; 1363 struct mt_report_data *rdata; 1364 1365 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1366 return; 1367 1368 rdata = mt_find_report_data(td, report); 1369 if (rdata && rdata->is_mt_collection) 1370 return mt_touch_report(hid, rdata); 1371 1372 if (field && field->hidinput && field->hidinput->input) 1373 input_sync(field->hidinput->input); 1374 } 1375 1376 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1377 struct hid_field *field, 1378 struct hid_usage *usage, 1379 enum latency_mode latency, 1380 bool surface_switch, 1381 bool button_switch, 1382 bool *inputmode_found) 1383 { 1384 struct mt_device *td = hid_get_drvdata(hdev); 1385 struct mt_class *cls = &td->mtclass; 1386 struct hid_report *report = field->report; 1387 unsigned int index = usage->usage_index; 1388 char *buf; 1389 u32 report_len; 1390 int max; 1391 1392 switch (usage->hid) { 1393 case HID_DG_INPUTMODE: 1394 /* 1395 * Some elan panels wrongly declare 2 input mode features, 1396 * and silently ignore when we set the value in the second 1397 * field. Skip the second feature and hope for the best. 1398 */ 1399 if (*inputmode_found) 1400 return false; 1401 1402 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1403 report_len = hid_report_len(report); 1404 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1405 if (!buf) { 1406 hid_err(hdev, 1407 "failed to allocate buffer for report\n"); 1408 return false; 1409 } 1410 hid_hw_raw_request(hdev, report->id, buf, report_len, 1411 HID_FEATURE_REPORT, 1412 HID_REQ_GET_REPORT); 1413 kfree(buf); 1414 } 1415 1416 field->value[index] = td->inputmode_value; 1417 *inputmode_found = true; 1418 return true; 1419 1420 case HID_DG_CONTACTMAX: 1421 if (cls->maxcontacts) { 1422 max = min_t(int, field->logical_maximum, 1423 cls->maxcontacts); 1424 if (field->value[index] != max) { 1425 field->value[index] = max; 1426 return true; 1427 } 1428 } 1429 break; 1430 1431 case HID_DG_LATENCYMODE: 1432 field->value[index] = latency; 1433 return true; 1434 1435 case HID_DG_SURFACESWITCH: 1436 field->value[index] = surface_switch; 1437 return true; 1438 1439 case HID_DG_BUTTONSWITCH: 1440 field->value[index] = button_switch; 1441 return true; 1442 } 1443 1444 return false; /* no need to update the report */ 1445 } 1446 1447 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1448 bool surface_switch, bool button_switch) 1449 { 1450 struct hid_report_enum *rep_enum; 1451 struct hid_report *rep; 1452 struct hid_usage *usage; 1453 int i, j; 1454 bool update_report; 1455 bool inputmode_found = false; 1456 1457 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1458 list_for_each_entry(rep, &rep_enum->report_list, list) { 1459 update_report = false; 1460 1461 for (i = 0; i < rep->maxfield; i++) { 1462 /* Ignore if report count is out of bounds. */ 1463 if (rep->field[i]->report_count < 1) 1464 continue; 1465 1466 for (j = 0; j < rep->field[i]->maxusage; j++) { 1467 usage = &rep->field[i]->usage[j]; 1468 1469 if (mt_need_to_apply_feature(hdev, 1470 rep->field[i], 1471 usage, 1472 latency, 1473 surface_switch, 1474 button_switch, 1475 &inputmode_found)) 1476 update_report = true; 1477 } 1478 } 1479 1480 if (update_report) 1481 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1482 } 1483 } 1484 1485 static void mt_post_parse_default_settings(struct mt_device *td, 1486 struct mt_application *app) 1487 { 1488 __s32 quirks = app->quirks; 1489 1490 /* unknown serial device needs special quirks */ 1491 if (list_is_singular(&app->mt_usages)) { 1492 quirks |= MT_QUIRK_ALWAYS_VALID; 1493 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1494 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1495 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1496 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1497 } 1498 1499 app->quirks = quirks; 1500 } 1501 1502 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1503 { 1504 if (!app->have_contact_count) 1505 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1506 } 1507 1508 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1509 { 1510 struct mt_device *td = hid_get_drvdata(hdev); 1511 char *name; 1512 const char *suffix = NULL; 1513 struct mt_report_data *rdata; 1514 struct mt_application *mt_application = NULL; 1515 struct hid_report *report; 1516 int ret; 1517 1518 list_for_each_entry(report, &hi->reports, hidinput_list) { 1519 rdata = mt_find_report_data(td, report); 1520 if (!rdata) { 1521 hid_err(hdev, "failed to allocate data for report\n"); 1522 return -ENOMEM; 1523 } 1524 1525 mt_application = rdata->application; 1526 1527 if (rdata->is_mt_collection) { 1528 ret = mt_touch_input_configured(hdev, hi, 1529 mt_application); 1530 if (ret) 1531 return ret; 1532 } 1533 } 1534 1535 switch (hi->application) { 1536 case HID_GD_KEYBOARD: 1537 case HID_GD_KEYPAD: 1538 case HID_GD_MOUSE: 1539 case HID_DG_TOUCHPAD: 1540 case HID_GD_SYSTEM_CONTROL: 1541 case HID_CP_CONSUMER_CONTROL: 1542 case HID_GD_WIRELESS_RADIO_CTLS: 1543 case HID_GD_SYSTEM_MULTIAXIS: 1544 /* already handled by hid core */ 1545 break; 1546 case HID_DG_TOUCHSCREEN: 1547 /* we do not set suffix = "Touchscreen" */ 1548 hi->input->name = hdev->name; 1549 break; 1550 case HID_DG_STYLUS: 1551 /* force BTN_STYLUS to allow tablet matching in udev */ 1552 __set_bit(BTN_STYLUS, hi->input->keybit); 1553 break; 1554 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1555 suffix = "Custom Media Keys"; 1556 break; 1557 default: 1558 suffix = "UNKNOWN"; 1559 break; 1560 } 1561 1562 if (suffix) { 1563 name = devm_kzalloc(&hi->input->dev, 1564 strlen(hdev->name) + strlen(suffix) + 2, 1565 GFP_KERNEL); 1566 if (name) { 1567 sprintf(name, "%s %s", hdev->name, suffix); 1568 hi->input->name = name; 1569 } 1570 } 1571 1572 return 0; 1573 } 1574 1575 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1576 { 1577 if (field->usage[0].hid != usage || 1578 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1579 return; 1580 1581 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1582 field->flags |= HID_MAIN_ITEM_VARIABLE; 1583 } 1584 1585 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1586 { 1587 struct hid_report *report; 1588 int i; 1589 1590 list_for_each_entry(report, 1591 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1592 list) { 1593 1594 if (!report->maxfield) 1595 continue; 1596 1597 for (i = 0; i < report->maxfield; i++) 1598 if (report->field[i]->maxusage >= 1) 1599 mt_fix_const_field(report->field[i], usage); 1600 } 1601 } 1602 1603 static void mt_release_contacts(struct hid_device *hid) 1604 { 1605 struct hid_input *hidinput; 1606 struct mt_application *application; 1607 struct mt_device *td = hid_get_drvdata(hid); 1608 1609 list_for_each_entry(hidinput, &hid->inputs, list) { 1610 struct input_dev *input_dev = hidinput->input; 1611 struct input_mt *mt = input_dev->mt; 1612 int i; 1613 1614 if (mt) { 1615 for (i = 0; i < mt->num_slots; i++) { 1616 input_mt_slot(input_dev, i); 1617 input_mt_report_slot_state(input_dev, 1618 MT_TOOL_FINGER, 1619 false); 1620 } 1621 input_mt_sync_frame(input_dev); 1622 input_sync(input_dev); 1623 } 1624 } 1625 1626 list_for_each_entry(application, &td->applications, list) { 1627 application->num_received = 0; 1628 } 1629 } 1630 1631 static void mt_expired_timeout(struct timer_list *t) 1632 { 1633 struct mt_device *td = from_timer(td, t, release_timer); 1634 struct hid_device *hdev = td->hdev; 1635 1636 /* 1637 * An input report came in just before we release the sticky fingers, 1638 * it will take care of the sticky fingers. 1639 */ 1640 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1641 return; 1642 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1643 mt_release_contacts(hdev); 1644 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1645 } 1646 1647 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1648 { 1649 int ret, i; 1650 struct mt_device *td; 1651 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1652 1653 for (i = 0; mt_classes[i].name ; i++) { 1654 if (id->driver_data == mt_classes[i].name) { 1655 mtclass = &(mt_classes[i]); 1656 break; 1657 } 1658 } 1659 1660 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1661 if (!td) { 1662 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1663 return -ENOMEM; 1664 } 1665 td->hdev = hdev; 1666 td->mtclass = *mtclass; 1667 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1668 hid_set_drvdata(hdev, td); 1669 1670 INIT_LIST_HEAD(&td->applications); 1671 INIT_LIST_HEAD(&td->reports); 1672 1673 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1674 td->serial_maybe = true; 1675 1676 /* This allows the driver to correctly support devices 1677 * that emit events over several HID messages. 1678 */ 1679 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1680 1681 /* 1682 * This allows the driver to handle different input sensors 1683 * that emits events through different applications on the same HID 1684 * device. 1685 */ 1686 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1687 1688 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1689 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1690 1691 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1692 1693 ret = hid_parse(hdev); 1694 if (ret != 0) 1695 return ret; 1696 1697 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1698 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1699 1700 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1701 if (ret) 1702 return ret; 1703 1704 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1705 if (ret) 1706 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1707 hdev->name); 1708 1709 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1710 1711 return 0; 1712 } 1713 1714 #ifdef CONFIG_PM 1715 static int mt_reset_resume(struct hid_device *hdev) 1716 { 1717 mt_release_contacts(hdev); 1718 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1719 return 0; 1720 } 1721 1722 static int mt_resume(struct hid_device *hdev) 1723 { 1724 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1725 * It should be safe to send it to other devices too. 1726 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1727 1728 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1729 1730 return 0; 1731 } 1732 #endif 1733 1734 static void mt_remove(struct hid_device *hdev) 1735 { 1736 struct mt_device *td = hid_get_drvdata(hdev); 1737 1738 del_timer_sync(&td->release_timer); 1739 1740 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1741 hid_hw_stop(hdev); 1742 } 1743 1744 /* 1745 * This list contains only: 1746 * - VID/PID of products not working with the default multitouch handling 1747 * - 2 generic rules. 1748 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1749 */ 1750 static const struct hid_device_id mt_devices[] = { 1751 1752 /* 3M panels */ 1753 { .driver_data = MT_CLS_3M, 1754 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1755 USB_DEVICE_ID_3M1968) }, 1756 { .driver_data = MT_CLS_3M, 1757 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1758 USB_DEVICE_ID_3M2256) }, 1759 { .driver_data = MT_CLS_3M, 1760 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1761 USB_DEVICE_ID_3M3266) }, 1762 1763 /* Alps devices */ 1764 { .driver_data = MT_CLS_WIN_8_DUAL, 1765 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1766 USB_VENDOR_ID_ALPS_JP, 1767 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1768 { .driver_data = MT_CLS_WIN_8_DUAL, 1769 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1770 USB_VENDOR_ID_ALPS_JP, 1771 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1772 1773 /* Lenovo X1 TAB Gen 2 */ 1774 { .driver_data = MT_CLS_WIN_8_DUAL, 1775 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1776 USB_VENDOR_ID_LENOVO, 1777 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1778 1779 /* Lenovo X1 TAB Gen 3 */ 1780 { .driver_data = MT_CLS_WIN_8_DUAL, 1781 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1782 USB_VENDOR_ID_LENOVO, 1783 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 1784 1785 /* Anton devices */ 1786 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1787 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1788 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1789 1790 /* Asus T304UA */ 1791 { .driver_data = MT_CLS_ASUS, 1792 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1793 USB_VENDOR_ID_ASUSTEK, 1794 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1795 1796 /* Atmel panels */ 1797 { .driver_data = MT_CLS_SERIAL, 1798 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1799 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1800 1801 /* Baanto multitouch devices */ 1802 { .driver_data = MT_CLS_NSMU, 1803 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1804 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1805 1806 /* Cando panels */ 1807 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1808 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1809 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1810 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1811 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1812 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1813 1814 /* Chunghwa Telecom touch panels */ 1815 { .driver_data = MT_CLS_NSMU, 1816 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1817 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1818 1819 /* Cirque devices */ 1820 { .driver_data = MT_CLS_WIN_8_DUAL, 1821 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1822 I2C_VENDOR_ID_CIRQUE, 1823 I2C_PRODUCT_ID_CIRQUE_121F) }, 1824 1825 /* CJTouch panels */ 1826 { .driver_data = MT_CLS_NSMU, 1827 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1828 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1829 { .driver_data = MT_CLS_NSMU, 1830 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1831 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1832 1833 /* CVTouch panels */ 1834 { .driver_data = MT_CLS_NSMU, 1835 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1836 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1837 1838 /* eGalax devices (resistive) */ 1839 { .driver_data = MT_CLS_EGALAX, 1840 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1841 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1842 { .driver_data = MT_CLS_EGALAX, 1843 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1844 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1845 1846 /* eGalax devices (capacitive) */ 1847 { .driver_data = MT_CLS_EGALAX_SERIAL, 1848 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1849 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1850 { .driver_data = MT_CLS_EGALAX, 1851 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1852 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1853 { .driver_data = MT_CLS_EGALAX_SERIAL, 1854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1856 { .driver_data = MT_CLS_EGALAX_SERIAL, 1857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1859 { .driver_data = MT_CLS_EGALAX_SERIAL, 1860 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1862 { .driver_data = MT_CLS_EGALAX_SERIAL, 1863 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1864 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1865 { .driver_data = MT_CLS_EGALAX, 1866 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1867 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1868 { .driver_data = MT_CLS_EGALAX, 1869 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1870 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1871 { .driver_data = MT_CLS_EGALAX_SERIAL, 1872 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1873 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1874 { .driver_data = MT_CLS_EGALAX, 1875 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1876 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1877 { .driver_data = MT_CLS_EGALAX, 1878 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1880 { .driver_data = MT_CLS_EGALAX, 1881 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1882 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1883 { .driver_data = MT_CLS_EGALAX, 1884 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1885 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1886 { .driver_data = MT_CLS_EGALAX_SERIAL, 1887 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1888 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1889 { .driver_data = MT_CLS_EGALAX_SERIAL, 1890 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1891 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1892 { .driver_data = MT_CLS_EGALAX_SERIAL, 1893 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1894 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1895 1896 /* Elitegroup panel */ 1897 { .driver_data = MT_CLS_SERIAL, 1898 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1899 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1900 1901 /* Flatfrog Panels */ 1902 { .driver_data = MT_CLS_FLATFROG, 1903 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1904 USB_DEVICE_ID_MULTITOUCH_3200) }, 1905 1906 /* FocalTech Panels */ 1907 { .driver_data = MT_CLS_SERIAL, 1908 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1909 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1910 1911 /* GeneralTouch panel */ 1912 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1913 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1914 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1915 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1916 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1917 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1918 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1919 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1920 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1921 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1922 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1923 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1924 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1925 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1926 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1927 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1928 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1929 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1930 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1931 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1932 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1933 1934 /* Gametel game controller */ 1935 { .driver_data = MT_CLS_NSMU, 1936 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1937 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1938 1939 /* GoodTouch panels */ 1940 { .driver_data = MT_CLS_NSMU, 1941 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1942 USB_DEVICE_ID_GOODTOUCH_000f) }, 1943 1944 /* Hanvon panels */ 1945 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1946 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1947 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1948 1949 /* Ilitek dual touch panel */ 1950 { .driver_data = MT_CLS_NSMU, 1951 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1952 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1953 1954 /* LG Melfas panel */ 1955 { .driver_data = MT_CLS_LG, 1956 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1957 USB_DEVICE_ID_LG_MELFAS_MT) }, 1958 1959 /* MosArt panels */ 1960 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1961 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1962 USB_DEVICE_ID_ASUS_T91MT)}, 1963 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1964 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1965 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1966 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1967 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1968 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1969 1970 /* Novatek Panel */ 1971 { .driver_data = MT_CLS_NSMU, 1972 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1973 USB_DEVICE_ID_NOVATEK_PCT) }, 1974 1975 /* Ntrig Panel */ 1976 { .driver_data = MT_CLS_NSMU, 1977 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1978 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1979 1980 /* Panasonic panels */ 1981 { .driver_data = MT_CLS_PANASONIC, 1982 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1983 USB_DEVICE_ID_PANABOARD_UBT780) }, 1984 { .driver_data = MT_CLS_PANASONIC, 1985 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1986 USB_DEVICE_ID_PANABOARD_UBT880) }, 1987 1988 /* PixArt optical touch screen */ 1989 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1990 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1991 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1992 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1993 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1994 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1995 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1996 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1997 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1998 1999 /* PixCir-based panels */ 2000 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2001 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2002 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2003 2004 /* Quanta-based panels */ 2005 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2006 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2007 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2008 2009 /* Razer touchpads */ 2010 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2011 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2012 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2013 2014 /* Stantum panels */ 2015 { .driver_data = MT_CLS_CONFIDENCE, 2016 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2017 USB_DEVICE_ID_MTP_STM)}, 2018 2019 /* TopSeed panels */ 2020 { .driver_data = MT_CLS_TOPSEED, 2021 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2022 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2023 2024 /* Touch International panels */ 2025 { .driver_data = MT_CLS_NSMU, 2026 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2027 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2028 2029 /* Unitec panels */ 2030 { .driver_data = MT_CLS_NSMU, 2031 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2032 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2033 { .driver_data = MT_CLS_NSMU, 2034 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2035 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2036 2037 /* VTL panels */ 2038 { .driver_data = MT_CLS_VTL, 2039 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2040 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2041 2042 /* Wistron panels */ 2043 { .driver_data = MT_CLS_NSMU, 2044 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2045 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2046 2047 /* XAT */ 2048 { .driver_data = MT_CLS_NSMU, 2049 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2050 USB_DEVICE_ID_XAT_CSR) }, 2051 2052 /* Xiroku */ 2053 { .driver_data = MT_CLS_NSMU, 2054 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2055 USB_DEVICE_ID_XIROKU_SPX) }, 2056 { .driver_data = MT_CLS_NSMU, 2057 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2058 USB_DEVICE_ID_XIROKU_MPX) }, 2059 { .driver_data = MT_CLS_NSMU, 2060 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2061 USB_DEVICE_ID_XIROKU_CSR) }, 2062 { .driver_data = MT_CLS_NSMU, 2063 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2064 USB_DEVICE_ID_XIROKU_SPX1) }, 2065 { .driver_data = MT_CLS_NSMU, 2066 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2067 USB_DEVICE_ID_XIROKU_MPX1) }, 2068 { .driver_data = MT_CLS_NSMU, 2069 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2070 USB_DEVICE_ID_XIROKU_CSR1) }, 2071 { .driver_data = MT_CLS_NSMU, 2072 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2073 USB_DEVICE_ID_XIROKU_SPX2) }, 2074 { .driver_data = MT_CLS_NSMU, 2075 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2076 USB_DEVICE_ID_XIROKU_MPX2) }, 2077 { .driver_data = MT_CLS_NSMU, 2078 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2079 USB_DEVICE_ID_XIROKU_CSR2) }, 2080 2081 /* Google MT devices */ 2082 { .driver_data = MT_CLS_GOOGLE, 2083 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2084 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2085 2086 /* Generic MT device */ 2087 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2088 2089 /* Generic Win 8 certified MT device */ 2090 { .driver_data = MT_CLS_WIN_8, 2091 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2092 HID_ANY_ID, HID_ANY_ID) }, 2093 { } 2094 }; 2095 MODULE_DEVICE_TABLE(hid, mt_devices); 2096 2097 static const struct hid_usage_id mt_grabbed_usages[] = { 2098 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2099 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2100 }; 2101 2102 static struct hid_driver mt_driver = { 2103 .name = "hid-multitouch", 2104 .id_table = mt_devices, 2105 .probe = mt_probe, 2106 .remove = mt_remove, 2107 .input_mapping = mt_input_mapping, 2108 .input_mapped = mt_input_mapped, 2109 .input_configured = mt_input_configured, 2110 .feature_mapping = mt_feature_mapping, 2111 .usage_table = mt_grabbed_usages, 2112 .event = mt_event, 2113 .report = mt_report, 2114 #ifdef CONFIG_PM 2115 .reset_resume = mt_reset_resume, 2116 .resume = mt_resume, 2117 #endif 2118 }; 2119 module_hid_driver(mt_driver); 2120