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 if (usage->contactid == DEFAULT_ZERO || 641 usage->x == DEFAULT_ZERO || 642 usage->y == DEFAULT_ZERO) { 643 hid_dbg(hdev, 644 "ignoring duplicate usage on incomplete"); 645 return; 646 } 647 usage = mt_allocate_usage(hdev, application); 648 if (!usage) 649 return; 650 651 target = (__s32 **)((char *)usage + offset); 652 } 653 654 *target = value; 655 } 656 657 #define MT_STORE_FIELD(__name) \ 658 mt_store_field(hdev, app, \ 659 &field->value[usage->usage_index], \ 660 offsetof(struct mt_usages, __name)) 661 662 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 663 struct hid_field *field, struct hid_usage *usage, 664 unsigned long **bit, int *max, struct mt_application *app) 665 { 666 struct mt_device *td = hid_get_drvdata(hdev); 667 struct mt_class *cls = &td->mtclass; 668 int code; 669 struct hid_usage *prev_usage = NULL; 670 671 /* 672 * Model touchscreens providing buttons as touchpads. 673 */ 674 if (field->application == HID_DG_TOUCHSCREEN && 675 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 676 app->mt_flags |= INPUT_MT_POINTER; 677 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 678 } 679 680 /* count the buttons on touchpads */ 681 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 682 app->buttons_count++; 683 684 if (usage->usage_index) 685 prev_usage = &field->usage[usage->usage_index - 1]; 686 687 switch (usage->hid & HID_USAGE_PAGE) { 688 689 case HID_UP_GENDESK: 690 switch (usage->hid) { 691 case HID_GD_X: 692 if (prev_usage && (prev_usage->hid == usage->hid)) { 693 code = ABS_MT_TOOL_X; 694 MT_STORE_FIELD(cx); 695 } else { 696 code = ABS_MT_POSITION_X; 697 MT_STORE_FIELD(x); 698 } 699 700 set_abs(hi->input, code, field, cls->sn_move); 701 702 /* 703 * A system multi-axis that exports X and Y has a high 704 * chance of being used directly on a surface 705 */ 706 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 707 __set_bit(INPUT_PROP_DIRECT, 708 hi->input->propbit); 709 input_set_abs_params(hi->input, 710 ABS_MT_TOOL_TYPE, 711 MT_TOOL_DIAL, 712 MT_TOOL_DIAL, 0, 0); 713 } 714 715 return 1; 716 case HID_GD_Y: 717 if (prev_usage && (prev_usage->hid == usage->hid)) { 718 code = ABS_MT_TOOL_Y; 719 MT_STORE_FIELD(cy); 720 } else { 721 code = ABS_MT_POSITION_Y; 722 MT_STORE_FIELD(y); 723 } 724 725 set_abs(hi->input, code, field, cls->sn_move); 726 727 return 1; 728 } 729 return 0; 730 731 case HID_UP_DIGITIZER: 732 switch (usage->hid) { 733 case HID_DG_INRANGE: 734 if (app->quirks & MT_QUIRK_HOVERING) { 735 input_set_abs_params(hi->input, 736 ABS_MT_DISTANCE, 0, 1, 0, 0); 737 } 738 MT_STORE_FIELD(inrange_state); 739 return 1; 740 case HID_DG_CONFIDENCE: 741 if ((cls->name == MT_CLS_WIN_8 || 742 cls->name == MT_CLS_WIN_8_DUAL) && 743 (field->application == HID_DG_TOUCHPAD || 744 field->application == HID_DG_TOUCHSCREEN)) 745 app->quirks |= MT_QUIRK_CONFIDENCE; 746 747 if (app->quirks & MT_QUIRK_CONFIDENCE) 748 input_set_abs_params(hi->input, 749 ABS_MT_TOOL_TYPE, 750 MT_TOOL_FINGER, 751 MT_TOOL_PALM, 0, 0); 752 753 MT_STORE_FIELD(confidence_state); 754 return 1; 755 case HID_DG_TIPSWITCH: 756 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 757 input_set_capability(hi->input, 758 EV_KEY, BTN_TOUCH); 759 MT_STORE_FIELD(tip_state); 760 return 1; 761 case HID_DG_CONTACTID: 762 MT_STORE_FIELD(contactid); 763 app->touches_by_report++; 764 return 1; 765 case HID_DG_WIDTH: 766 if (!(app->quirks & MT_QUIRK_NO_AREA)) 767 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 768 cls->sn_width); 769 MT_STORE_FIELD(w); 770 return 1; 771 case HID_DG_HEIGHT: 772 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 773 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 774 cls->sn_height); 775 776 /* 777 * Only set ABS_MT_ORIENTATION if it is not 778 * already set by the HID_DG_AZIMUTH usage. 779 */ 780 if (!test_bit(ABS_MT_ORIENTATION, 781 hi->input->absbit)) 782 input_set_abs_params(hi->input, 783 ABS_MT_ORIENTATION, 0, 1, 0, 0); 784 } 785 MT_STORE_FIELD(h); 786 return 1; 787 case HID_DG_TIPPRESSURE: 788 set_abs(hi->input, ABS_MT_PRESSURE, field, 789 cls->sn_pressure); 790 MT_STORE_FIELD(p); 791 return 1; 792 case HID_DG_SCANTIME: 793 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 794 app->scantime = &field->value[usage->usage_index]; 795 app->scantime_logical_max = field->logical_maximum; 796 return 1; 797 case HID_DG_CONTACTCOUNT: 798 app->have_contact_count = true; 799 app->raw_cc = &field->value[usage->usage_index]; 800 return 1; 801 case HID_DG_AZIMUTH: 802 /* 803 * Azimuth has the range of [0, MAX) representing a full 804 * revolution. Set ABS_MT_ORIENTATION to a quarter of 805 * MAX according the definition of ABS_MT_ORIENTATION 806 */ 807 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 808 -field->logical_maximum / 4, 809 field->logical_maximum / 4, 810 cls->sn_move ? 811 field->logical_maximum / cls->sn_move : 0, 0); 812 MT_STORE_FIELD(a); 813 return 1; 814 case HID_DG_CONTACTMAX: 815 /* contact max are global to the report */ 816 return -1; 817 case HID_DG_TOUCH: 818 /* Legacy devices use TIPSWITCH and not TOUCH. 819 * Let's just ignore this field. */ 820 return -1; 821 } 822 /* let hid-input decide for the others */ 823 return 0; 824 825 case HID_UP_BUTTON: 826 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 827 /* 828 * MS PTP spec says that external buttons left and right have 829 * usages 2 and 3. 830 */ 831 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 832 field->application == HID_DG_TOUCHPAD && 833 (usage->hid & HID_USAGE) > 1) 834 code--; 835 836 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 837 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 838 839 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 840 input_set_capability(hi->input, EV_KEY, code); 841 return 1; 842 843 case 0xff000000: 844 /* we do not want to map these: no input-oriented meaning */ 845 return -1; 846 } 847 848 return 0; 849 } 850 851 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 852 struct mt_usages *slot, 853 struct input_dev *input) 854 { 855 __s32 quirks = app->quirks; 856 857 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 858 return *slot->contactid; 859 860 if (quirks & MT_QUIRK_CYPRESS) 861 return cypress_compute_slot(app, slot); 862 863 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 864 return app->num_received; 865 866 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 867 return *slot->contactid - 1; 868 869 return input_mt_get_slot_by_key(input, *slot->contactid); 870 } 871 872 static void mt_release_pending_palms(struct mt_device *td, 873 struct mt_application *app, 874 struct input_dev *input) 875 { 876 int slotnum; 877 bool need_sync = false; 878 879 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 880 clear_bit(slotnum, app->pending_palm_slots); 881 882 input_mt_slot(input, slotnum); 883 input_mt_report_slot_state(input, MT_TOOL_PALM, false); 884 885 need_sync = true; 886 } 887 888 if (need_sync) { 889 input_mt_sync_frame(input); 890 input_sync(input); 891 } 892 } 893 894 /* 895 * this function is called when a whole packet has been received and processed, 896 * so that it can decide what to send to the input layer. 897 */ 898 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 899 struct input_dev *input) 900 { 901 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 902 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 903 904 input_mt_sync_frame(input); 905 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 906 input_sync(input); 907 908 mt_release_pending_palms(td, app, input); 909 910 app->num_received = 0; 911 app->left_button_state = 0; 912 913 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 914 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 915 else 916 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 917 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 918 } 919 920 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 921 { 922 long delta = value - app->prev_scantime; 923 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 924 925 app->jiffies = jiffies; 926 927 if (delta < 0) 928 delta += app->scantime_logical_max; 929 930 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 931 delta *= 100; 932 933 if (jdelta > MAX_TIMESTAMP_INTERVAL) 934 /* No data received for a while, resync the timestamp. */ 935 return 0; 936 else 937 return app->timestamp + delta; 938 } 939 940 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 941 struct hid_usage *usage, __s32 value) 942 { 943 /* we will handle the hidinput part later, now remains hiddev */ 944 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 945 hid->hiddev_hid_event(hid, field, usage, value); 946 947 return 1; 948 } 949 950 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 951 struct mt_application *app, 952 struct mt_usages *slot) 953 { 954 struct input_mt *mt = input->mt; 955 __s32 quirks = app->quirks; 956 bool valid = true; 957 bool confidence_state = true; 958 bool inrange_state = false; 959 int active; 960 int slotnum; 961 int tool = MT_TOOL_FINGER; 962 963 if (!slot) 964 return -EINVAL; 965 966 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 967 app->num_received >= app->num_expected) 968 return -EAGAIN; 969 970 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 971 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 972 valid = *slot->inrange_state; 973 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 974 valid = *slot->tip_state; 975 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 976 valid = *slot->confidence_state; 977 978 if (!valid) 979 return 0; 980 } 981 982 slotnum = mt_compute_slot(td, app, slot, input); 983 if (slotnum < 0 || slotnum >= td->maxcontacts) 984 return 0; 985 986 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 987 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 988 989 if (input_mt_is_active(i_slot) && 990 input_mt_is_used(mt, i_slot)) 991 return -EAGAIN; 992 } 993 994 if (quirks & MT_QUIRK_CONFIDENCE) 995 confidence_state = *slot->confidence_state; 996 997 if (quirks & MT_QUIRK_HOVERING) 998 inrange_state = *slot->inrange_state; 999 1000 active = *slot->tip_state || inrange_state; 1001 1002 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1003 tool = MT_TOOL_DIAL; 1004 else if (unlikely(!confidence_state)) { 1005 tool = MT_TOOL_PALM; 1006 if (!active && 1007 input_mt_is_active(&mt->slots[slotnum])) { 1008 /* 1009 * The non-confidence was reported for 1010 * previously valid contact that is also no 1011 * longer valid. We can't simply report 1012 * lift-off as userspace will not be aware 1013 * of non-confidence, so we need to split 1014 * it into 2 events: active MT_TOOL_PALM 1015 * and a separate liftoff. 1016 */ 1017 active = true; 1018 set_bit(slotnum, app->pending_palm_slots); 1019 } 1020 } 1021 1022 input_mt_slot(input, slotnum); 1023 input_mt_report_slot_state(input, tool, active); 1024 if (active) { 1025 /* this finger is in proximity of the sensor */ 1026 int wide = (*slot->w > *slot->h); 1027 int major = max(*slot->w, *slot->h); 1028 int minor = min(*slot->w, *slot->h); 1029 int orientation = wide; 1030 int max_azimuth; 1031 int azimuth; 1032 1033 if (slot->a != DEFAULT_ZERO) { 1034 /* 1035 * Azimuth is counter-clockwise and ranges from [0, MAX) 1036 * (a full revolution). Convert it to clockwise ranging 1037 * [-MAX/2, MAX/2]. 1038 * 1039 * Note that ABS_MT_ORIENTATION require us to report 1040 * the limit of [-MAX/4, MAX/4], but the value can go 1041 * out of range to [-MAX/2, MAX/2] to report an upside 1042 * down ellipsis. 1043 */ 1044 azimuth = *slot->a; 1045 max_azimuth = input_abs_get_max(input, 1046 ABS_MT_ORIENTATION); 1047 if (azimuth > max_azimuth * 2) 1048 azimuth -= max_azimuth * 4; 1049 orientation = -azimuth; 1050 } 1051 1052 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1053 /* 1054 * divided by two to match visual scale of touch 1055 * for devices with this quirk 1056 */ 1057 major = major >> 1; 1058 minor = minor >> 1; 1059 } 1060 1061 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1062 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1063 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1064 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1065 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1066 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1067 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1068 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1069 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1070 1071 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1072 } 1073 1074 return 0; 1075 } 1076 1077 static void mt_process_mt_event(struct hid_device *hid, 1078 struct mt_application *app, 1079 struct hid_field *field, 1080 struct hid_usage *usage, 1081 __s32 value, 1082 bool first_packet) 1083 { 1084 __s32 quirks = app->quirks; 1085 struct input_dev *input = field->hidinput->input; 1086 1087 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1088 return; 1089 1090 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1091 1092 /* 1093 * For Win8 PTP touchpads we should only look at 1094 * non finger/touch events in the first_packet of a 1095 * (possible) multi-packet frame. 1096 */ 1097 if (!first_packet) 1098 return; 1099 1100 /* 1101 * For Win8 PTP touchpads we map both the clickpad click 1102 * and any "external" left buttons to BTN_LEFT if a 1103 * device claims to have both we need to report 1 for 1104 * BTN_LEFT if either is pressed, so we or all values 1105 * together and report the result in mt_sync_frame(). 1106 */ 1107 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1108 app->left_button_state |= value; 1109 return; 1110 } 1111 } 1112 1113 input_event(input, usage->type, usage->code, value); 1114 } 1115 1116 static void mt_touch_report(struct hid_device *hid, 1117 struct mt_report_data *rdata) 1118 { 1119 struct mt_device *td = hid_get_drvdata(hid); 1120 struct hid_report *report = rdata->report; 1121 struct mt_application *app = rdata->application; 1122 struct hid_field *field; 1123 struct input_dev *input; 1124 struct mt_usages *slot; 1125 bool first_packet; 1126 unsigned count; 1127 int r, n; 1128 int scantime = 0; 1129 int contact_count = -1; 1130 1131 /* sticky fingers release in progress, abort */ 1132 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1133 return; 1134 1135 scantime = *app->scantime; 1136 app->timestamp = mt_compute_timestamp(app, scantime); 1137 if (app->raw_cc != DEFAULT_ZERO) 1138 contact_count = *app->raw_cc; 1139 1140 /* 1141 * Includes multi-packet support where subsequent 1142 * packets are sent with zero contactcount. 1143 */ 1144 if (contact_count >= 0) { 1145 /* 1146 * For Win8 PTPs the first packet (td->num_received == 0) may 1147 * have a contactcount of 0 if there only is a button event. 1148 * We double check that this is not a continuation packet 1149 * of a possible multi-packet frame be checking that the 1150 * timestamp has changed. 1151 */ 1152 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1153 app->num_received == 0 && 1154 app->prev_scantime != scantime) 1155 app->num_expected = contact_count; 1156 /* A non 0 contact count always indicates a first packet */ 1157 else if (contact_count) 1158 app->num_expected = contact_count; 1159 } 1160 app->prev_scantime = scantime; 1161 1162 first_packet = app->num_received == 0; 1163 1164 input = report->field[0]->hidinput->input; 1165 1166 list_for_each_entry(slot, &app->mt_usages, list) { 1167 if (!mt_process_slot(td, input, app, slot)) 1168 app->num_received++; 1169 } 1170 1171 for (r = 0; r < report->maxfield; r++) { 1172 field = report->field[r]; 1173 count = field->report_count; 1174 1175 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1176 continue; 1177 1178 for (n = 0; n < count; n++) 1179 mt_process_mt_event(hid, app, field, 1180 &field->usage[n], field->value[n], 1181 first_packet); 1182 } 1183 1184 if (app->num_received >= app->num_expected) 1185 mt_sync_frame(td, app, input); 1186 1187 /* 1188 * Windows 8 specs says 2 things: 1189 * - once a contact has been reported, it has to be reported in each 1190 * subsequent report 1191 * - the report rate when fingers are present has to be at least 1192 * the refresh rate of the screen, 60 or 120 Hz 1193 * 1194 * I interprete this that the specification forces a report rate of 1195 * at least 60 Hz for a touchscreen to be certified. 1196 * Which means that if we do not get a report whithin 16 ms, either 1197 * something wrong happens, either the touchscreen forgets to send 1198 * a release. Taking a reasonable margin allows to remove issues 1199 * with USB communication or the load of the machine. 1200 * 1201 * Given that Win 8 devices are forced to send a release, this will 1202 * only affect laggish machines and the ones that have a firmware 1203 * defect. 1204 */ 1205 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1206 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1207 mod_timer(&td->release_timer, 1208 jiffies + msecs_to_jiffies(100)); 1209 else 1210 del_timer(&td->release_timer); 1211 } 1212 1213 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1214 } 1215 1216 static int mt_touch_input_configured(struct hid_device *hdev, 1217 struct hid_input *hi, 1218 struct mt_application *app) 1219 { 1220 struct mt_device *td = hid_get_drvdata(hdev); 1221 struct mt_class *cls = &td->mtclass; 1222 struct input_dev *input = hi->input; 1223 int ret; 1224 1225 if (!td->maxcontacts) 1226 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1227 1228 mt_post_parse(td, app); 1229 if (td->serial_maybe) 1230 mt_post_parse_default_settings(td, app); 1231 1232 if (cls->is_indirect) 1233 app->mt_flags |= INPUT_MT_POINTER; 1234 1235 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1236 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1237 1238 /* check for clickpads */ 1239 if ((app->mt_flags & INPUT_MT_POINTER) && 1240 (app->buttons_count == 1)) 1241 td->is_buttonpad = true; 1242 1243 if (td->is_buttonpad) 1244 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1245 1246 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1247 BITS_TO_LONGS(td->maxcontacts), 1248 sizeof(long), 1249 GFP_KERNEL); 1250 if (!app->pending_palm_slots) 1251 return -ENOMEM; 1252 1253 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1254 if (ret) 1255 return ret; 1256 1257 app->mt_flags = 0; 1258 return 0; 1259 } 1260 1261 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1262 max, EV_KEY, (c)) 1263 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1264 struct hid_field *field, struct hid_usage *usage, 1265 unsigned long **bit, int *max) 1266 { 1267 struct mt_device *td = hid_get_drvdata(hdev); 1268 struct mt_application *application; 1269 struct mt_report_data *rdata; 1270 1271 rdata = mt_find_report_data(td, field->report); 1272 if (!rdata) { 1273 hid_err(hdev, "failed to allocate data for report\n"); 1274 return 0; 1275 } 1276 1277 application = rdata->application; 1278 1279 /* 1280 * If mtclass.export_all_inputs is not set, only map fields from 1281 * TouchScreen or TouchPad collections. We need to ignore fields 1282 * that belong to other collections such as Mouse that might have 1283 * the same GenericDesktop usages. 1284 */ 1285 if (!td->mtclass.export_all_inputs && 1286 field->application != HID_DG_TOUCHSCREEN && 1287 field->application != HID_DG_PEN && 1288 field->application != HID_DG_TOUCHPAD && 1289 field->application != HID_GD_KEYBOARD && 1290 field->application != HID_GD_SYSTEM_CONTROL && 1291 field->application != HID_CP_CONSUMER_CONTROL && 1292 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1293 field->application != HID_GD_SYSTEM_MULTIAXIS && 1294 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1295 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1296 return -1; 1297 1298 /* 1299 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1300 * touchpad report descriptor. We need to treat these as an array to 1301 * map usages to input keys. 1302 */ 1303 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1304 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1305 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1306 set_bit(EV_REP, hi->input->evbit); 1307 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1308 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1309 switch (usage->hid & HID_USAGE) { 1310 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1311 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1312 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1313 case 0x6b: mt_map_key_clear(KEY_F21); break; 1314 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1315 default: 1316 return -1; 1317 } 1318 return 1; 1319 } 1320 1321 if (rdata->is_mt_collection) 1322 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1323 application); 1324 1325 /* 1326 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1327 * for the stylus. Overwrite the hid_input application 1328 */ 1329 if (field->physical == HID_DG_STYLUS) 1330 hi->application = HID_DG_STYLUS; 1331 1332 /* let hid-core decide for the others */ 1333 return 0; 1334 } 1335 1336 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1337 struct hid_field *field, struct hid_usage *usage, 1338 unsigned long **bit, int *max) 1339 { 1340 struct mt_device *td = hid_get_drvdata(hdev); 1341 struct mt_report_data *rdata; 1342 1343 rdata = mt_find_report_data(td, field->report); 1344 if (rdata && rdata->is_mt_collection) { 1345 /* We own these mappings, tell hid-input to ignore them */ 1346 return -1; 1347 } 1348 1349 /* let hid-core decide for the others */ 1350 return 0; 1351 } 1352 1353 static int mt_event(struct hid_device *hid, struct hid_field *field, 1354 struct hid_usage *usage, __s32 value) 1355 { 1356 struct mt_device *td = hid_get_drvdata(hid); 1357 struct mt_report_data *rdata; 1358 1359 rdata = mt_find_report_data(td, field->report); 1360 if (rdata && rdata->is_mt_collection) 1361 return mt_touch_event(hid, field, usage, value); 1362 1363 return 0; 1364 } 1365 1366 static void mt_report(struct hid_device *hid, struct hid_report *report) 1367 { 1368 struct mt_device *td = hid_get_drvdata(hid); 1369 struct hid_field *field = report->field[0]; 1370 struct mt_report_data *rdata; 1371 1372 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1373 return; 1374 1375 rdata = mt_find_report_data(td, report); 1376 if (rdata && rdata->is_mt_collection) 1377 return mt_touch_report(hid, rdata); 1378 1379 if (field && field->hidinput && field->hidinput->input) 1380 input_sync(field->hidinput->input); 1381 } 1382 1383 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1384 struct hid_field *field, 1385 struct hid_usage *usage, 1386 enum latency_mode latency, 1387 bool surface_switch, 1388 bool button_switch, 1389 bool *inputmode_found) 1390 { 1391 struct mt_device *td = hid_get_drvdata(hdev); 1392 struct mt_class *cls = &td->mtclass; 1393 struct hid_report *report = field->report; 1394 unsigned int index = usage->usage_index; 1395 char *buf; 1396 u32 report_len; 1397 int max; 1398 1399 switch (usage->hid) { 1400 case HID_DG_INPUTMODE: 1401 /* 1402 * Some elan panels wrongly declare 2 input mode features, 1403 * and silently ignore when we set the value in the second 1404 * field. Skip the second feature and hope for the best. 1405 */ 1406 if (*inputmode_found) 1407 return false; 1408 1409 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1410 report_len = hid_report_len(report); 1411 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1412 if (!buf) { 1413 hid_err(hdev, 1414 "failed to allocate buffer for report\n"); 1415 return false; 1416 } 1417 hid_hw_raw_request(hdev, report->id, buf, report_len, 1418 HID_FEATURE_REPORT, 1419 HID_REQ_GET_REPORT); 1420 kfree(buf); 1421 } 1422 1423 field->value[index] = td->inputmode_value; 1424 *inputmode_found = true; 1425 return true; 1426 1427 case HID_DG_CONTACTMAX: 1428 if (cls->maxcontacts) { 1429 max = min_t(int, field->logical_maximum, 1430 cls->maxcontacts); 1431 if (field->value[index] != max) { 1432 field->value[index] = max; 1433 return true; 1434 } 1435 } 1436 break; 1437 1438 case HID_DG_LATENCYMODE: 1439 field->value[index] = latency; 1440 return true; 1441 1442 case HID_DG_SURFACESWITCH: 1443 field->value[index] = surface_switch; 1444 return true; 1445 1446 case HID_DG_BUTTONSWITCH: 1447 field->value[index] = button_switch; 1448 return true; 1449 } 1450 1451 return false; /* no need to update the report */ 1452 } 1453 1454 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1455 bool surface_switch, bool button_switch) 1456 { 1457 struct hid_report_enum *rep_enum; 1458 struct hid_report *rep; 1459 struct hid_usage *usage; 1460 int i, j; 1461 bool update_report; 1462 bool inputmode_found = false; 1463 1464 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1465 list_for_each_entry(rep, &rep_enum->report_list, list) { 1466 update_report = false; 1467 1468 for (i = 0; i < rep->maxfield; i++) { 1469 /* Ignore if report count is out of bounds. */ 1470 if (rep->field[i]->report_count < 1) 1471 continue; 1472 1473 for (j = 0; j < rep->field[i]->maxusage; j++) { 1474 usage = &rep->field[i]->usage[j]; 1475 1476 if (mt_need_to_apply_feature(hdev, 1477 rep->field[i], 1478 usage, 1479 latency, 1480 surface_switch, 1481 button_switch, 1482 &inputmode_found)) 1483 update_report = true; 1484 } 1485 } 1486 1487 if (update_report) 1488 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1489 } 1490 } 1491 1492 static void mt_post_parse_default_settings(struct mt_device *td, 1493 struct mt_application *app) 1494 { 1495 __s32 quirks = app->quirks; 1496 1497 /* unknown serial device needs special quirks */ 1498 if (list_is_singular(&app->mt_usages)) { 1499 quirks |= MT_QUIRK_ALWAYS_VALID; 1500 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1501 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1502 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1503 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1504 } 1505 1506 app->quirks = quirks; 1507 } 1508 1509 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1510 { 1511 if (!app->have_contact_count) 1512 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1513 } 1514 1515 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1516 { 1517 struct mt_device *td = hid_get_drvdata(hdev); 1518 char *name; 1519 const char *suffix = NULL; 1520 struct mt_report_data *rdata; 1521 struct mt_application *mt_application = NULL; 1522 struct hid_report *report; 1523 int ret; 1524 1525 list_for_each_entry(report, &hi->reports, hidinput_list) { 1526 rdata = mt_find_report_data(td, report); 1527 if (!rdata) { 1528 hid_err(hdev, "failed to allocate data for report\n"); 1529 return -ENOMEM; 1530 } 1531 1532 mt_application = rdata->application; 1533 1534 if (rdata->is_mt_collection) { 1535 ret = mt_touch_input_configured(hdev, hi, 1536 mt_application); 1537 if (ret) 1538 return ret; 1539 } 1540 } 1541 1542 switch (hi->application) { 1543 case HID_GD_KEYBOARD: 1544 case HID_GD_KEYPAD: 1545 case HID_GD_MOUSE: 1546 case HID_DG_TOUCHPAD: 1547 case HID_GD_SYSTEM_CONTROL: 1548 case HID_CP_CONSUMER_CONTROL: 1549 case HID_GD_WIRELESS_RADIO_CTLS: 1550 case HID_GD_SYSTEM_MULTIAXIS: 1551 /* already handled by hid core */ 1552 break; 1553 case HID_DG_TOUCHSCREEN: 1554 /* we do not set suffix = "Touchscreen" */ 1555 hi->input->name = hdev->name; 1556 break; 1557 case HID_DG_STYLUS: 1558 /* force BTN_STYLUS to allow tablet matching in udev */ 1559 __set_bit(BTN_STYLUS, hi->input->keybit); 1560 break; 1561 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1562 suffix = "Custom Media Keys"; 1563 break; 1564 default: 1565 suffix = "UNKNOWN"; 1566 break; 1567 } 1568 1569 if (suffix) { 1570 name = devm_kzalloc(&hi->input->dev, 1571 strlen(hdev->name) + strlen(suffix) + 2, 1572 GFP_KERNEL); 1573 if (name) { 1574 sprintf(name, "%s %s", hdev->name, suffix); 1575 hi->input->name = name; 1576 } 1577 } 1578 1579 return 0; 1580 } 1581 1582 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1583 { 1584 if (field->usage[0].hid != usage || 1585 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1586 return; 1587 1588 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1589 field->flags |= HID_MAIN_ITEM_VARIABLE; 1590 } 1591 1592 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1593 { 1594 struct hid_report *report; 1595 int i; 1596 1597 list_for_each_entry(report, 1598 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1599 list) { 1600 1601 if (!report->maxfield) 1602 continue; 1603 1604 for (i = 0; i < report->maxfield; i++) 1605 if (report->field[i]->maxusage >= 1) 1606 mt_fix_const_field(report->field[i], usage); 1607 } 1608 } 1609 1610 static void mt_release_contacts(struct hid_device *hid) 1611 { 1612 struct hid_input *hidinput; 1613 struct mt_application *application; 1614 struct mt_device *td = hid_get_drvdata(hid); 1615 1616 list_for_each_entry(hidinput, &hid->inputs, list) { 1617 struct input_dev *input_dev = hidinput->input; 1618 struct input_mt *mt = input_dev->mt; 1619 int i; 1620 1621 if (mt) { 1622 for (i = 0; i < mt->num_slots; i++) { 1623 input_mt_slot(input_dev, i); 1624 input_mt_report_slot_state(input_dev, 1625 MT_TOOL_FINGER, 1626 false); 1627 } 1628 input_mt_sync_frame(input_dev); 1629 input_sync(input_dev); 1630 } 1631 } 1632 1633 list_for_each_entry(application, &td->applications, list) { 1634 application->num_received = 0; 1635 } 1636 } 1637 1638 static void mt_expired_timeout(struct timer_list *t) 1639 { 1640 struct mt_device *td = from_timer(td, t, release_timer); 1641 struct hid_device *hdev = td->hdev; 1642 1643 /* 1644 * An input report came in just before we release the sticky fingers, 1645 * it will take care of the sticky fingers. 1646 */ 1647 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1648 return; 1649 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1650 mt_release_contacts(hdev); 1651 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1652 } 1653 1654 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1655 { 1656 int ret, i; 1657 struct mt_device *td; 1658 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1659 1660 for (i = 0; mt_classes[i].name ; i++) { 1661 if (id->driver_data == mt_classes[i].name) { 1662 mtclass = &(mt_classes[i]); 1663 break; 1664 } 1665 } 1666 1667 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1668 if (!td) { 1669 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1670 return -ENOMEM; 1671 } 1672 td->hdev = hdev; 1673 td->mtclass = *mtclass; 1674 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1675 hid_set_drvdata(hdev, td); 1676 1677 INIT_LIST_HEAD(&td->applications); 1678 INIT_LIST_HEAD(&td->reports); 1679 1680 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1681 td->serial_maybe = true; 1682 1683 /* This allows the driver to correctly support devices 1684 * that emit events over several HID messages. 1685 */ 1686 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1687 1688 /* 1689 * This allows the driver to handle different input sensors 1690 * that emits events through different applications on the same HID 1691 * device. 1692 */ 1693 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1694 1695 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1696 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1697 1698 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1699 1700 ret = hid_parse(hdev); 1701 if (ret != 0) 1702 return ret; 1703 1704 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1705 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1706 1707 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1708 if (ret) 1709 return ret; 1710 1711 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1712 if (ret) 1713 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1714 hdev->name); 1715 1716 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1717 1718 return 0; 1719 } 1720 1721 #ifdef CONFIG_PM 1722 static int mt_reset_resume(struct hid_device *hdev) 1723 { 1724 mt_release_contacts(hdev); 1725 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1726 return 0; 1727 } 1728 1729 static int mt_resume(struct hid_device *hdev) 1730 { 1731 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1732 * It should be safe to send it to other devices too. 1733 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1734 1735 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1736 1737 return 0; 1738 } 1739 #endif 1740 1741 static void mt_remove(struct hid_device *hdev) 1742 { 1743 struct mt_device *td = hid_get_drvdata(hdev); 1744 1745 del_timer_sync(&td->release_timer); 1746 1747 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1748 hid_hw_stop(hdev); 1749 } 1750 1751 /* 1752 * This list contains only: 1753 * - VID/PID of products not working with the default multitouch handling 1754 * - 2 generic rules. 1755 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1756 */ 1757 static const struct hid_device_id mt_devices[] = { 1758 1759 /* 3M panels */ 1760 { .driver_data = MT_CLS_3M, 1761 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1762 USB_DEVICE_ID_3M1968) }, 1763 { .driver_data = MT_CLS_3M, 1764 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1765 USB_DEVICE_ID_3M2256) }, 1766 { .driver_data = MT_CLS_3M, 1767 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1768 USB_DEVICE_ID_3M3266) }, 1769 1770 /* Alps devices */ 1771 { .driver_data = MT_CLS_WIN_8_DUAL, 1772 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1773 USB_VENDOR_ID_ALPS_JP, 1774 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1775 { .driver_data = MT_CLS_WIN_8_DUAL, 1776 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1777 USB_VENDOR_ID_ALPS_JP, 1778 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1779 1780 /* Lenovo X1 TAB Gen 2 */ 1781 { .driver_data = MT_CLS_WIN_8_DUAL, 1782 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1783 USB_VENDOR_ID_LENOVO, 1784 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1785 1786 /* Lenovo X1 TAB Gen 3 */ 1787 { .driver_data = MT_CLS_WIN_8_DUAL, 1788 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1789 USB_VENDOR_ID_LENOVO, 1790 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 1791 1792 /* Anton devices */ 1793 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1794 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1795 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1796 1797 /* Asus T304UA */ 1798 { .driver_data = MT_CLS_ASUS, 1799 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1800 USB_VENDOR_ID_ASUSTEK, 1801 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1802 1803 /* Atmel panels */ 1804 { .driver_data = MT_CLS_SERIAL, 1805 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1806 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1807 1808 /* Baanto multitouch devices */ 1809 { .driver_data = MT_CLS_NSMU, 1810 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1811 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1812 1813 /* Cando panels */ 1814 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1815 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1816 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1817 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1818 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1819 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1820 1821 /* Chunghwa Telecom touch panels */ 1822 { .driver_data = MT_CLS_NSMU, 1823 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1824 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1825 1826 /* Cirque devices */ 1827 { .driver_data = MT_CLS_WIN_8_DUAL, 1828 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1829 I2C_VENDOR_ID_CIRQUE, 1830 I2C_PRODUCT_ID_CIRQUE_121F) }, 1831 1832 /* CJTouch panels */ 1833 { .driver_data = MT_CLS_NSMU, 1834 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1835 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1836 { .driver_data = MT_CLS_NSMU, 1837 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1838 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1839 1840 /* CVTouch panels */ 1841 { .driver_data = MT_CLS_NSMU, 1842 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1843 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1844 1845 /* eGalax devices (resistive) */ 1846 { .driver_data = MT_CLS_EGALAX, 1847 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1848 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1849 { .driver_data = MT_CLS_EGALAX, 1850 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1851 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1852 1853 /* eGalax devices (capacitive) */ 1854 { .driver_data = MT_CLS_EGALAX_SERIAL, 1855 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1856 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1857 { .driver_data = MT_CLS_EGALAX, 1858 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1859 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1860 { .driver_data = MT_CLS_EGALAX_SERIAL, 1861 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1862 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1863 { .driver_data = MT_CLS_EGALAX_SERIAL, 1864 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1865 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1866 { .driver_data = MT_CLS_EGALAX_SERIAL, 1867 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1868 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1869 { .driver_data = MT_CLS_EGALAX_SERIAL, 1870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1872 { .driver_data = MT_CLS_EGALAX, 1873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1875 { .driver_data = MT_CLS_EGALAX, 1876 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1877 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1878 { .driver_data = MT_CLS_EGALAX_SERIAL, 1879 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1880 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1881 { .driver_data = MT_CLS_EGALAX, 1882 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1883 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1884 { .driver_data = MT_CLS_EGALAX, 1885 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1886 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1887 { .driver_data = MT_CLS_EGALAX, 1888 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1889 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1890 { .driver_data = MT_CLS_EGALAX, 1891 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1892 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1893 { .driver_data = MT_CLS_EGALAX_SERIAL, 1894 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1895 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1896 { .driver_data = MT_CLS_EGALAX_SERIAL, 1897 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1898 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1899 { .driver_data = MT_CLS_EGALAX_SERIAL, 1900 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1901 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1902 1903 /* Elitegroup panel */ 1904 { .driver_data = MT_CLS_SERIAL, 1905 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1906 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1907 1908 /* Flatfrog Panels */ 1909 { .driver_data = MT_CLS_FLATFROG, 1910 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1911 USB_DEVICE_ID_MULTITOUCH_3200) }, 1912 1913 /* FocalTech Panels */ 1914 { .driver_data = MT_CLS_SERIAL, 1915 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1916 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1917 1918 /* GeneralTouch panel */ 1919 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1920 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1921 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1922 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1923 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1924 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1925 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1926 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1927 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1928 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1929 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1930 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1931 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1932 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1933 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1934 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1935 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1936 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1937 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1938 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1939 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1940 1941 /* Gametel game controller */ 1942 { .driver_data = MT_CLS_NSMU, 1943 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1944 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1945 1946 /* GoodTouch panels */ 1947 { .driver_data = MT_CLS_NSMU, 1948 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1949 USB_DEVICE_ID_GOODTOUCH_000f) }, 1950 1951 /* Hanvon panels */ 1952 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1953 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1954 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1955 1956 /* Ilitek dual touch panel */ 1957 { .driver_data = MT_CLS_NSMU, 1958 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1959 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1960 1961 /* LG Melfas panel */ 1962 { .driver_data = MT_CLS_LG, 1963 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1964 USB_DEVICE_ID_LG_MELFAS_MT) }, 1965 1966 /* MosArt panels */ 1967 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1968 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1969 USB_DEVICE_ID_ASUS_T91MT)}, 1970 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1971 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1972 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1973 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1974 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1975 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1976 1977 /* Novatek Panel */ 1978 { .driver_data = MT_CLS_NSMU, 1979 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1980 USB_DEVICE_ID_NOVATEK_PCT) }, 1981 1982 /* Ntrig Panel */ 1983 { .driver_data = MT_CLS_NSMU, 1984 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1985 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1986 1987 /* Panasonic panels */ 1988 { .driver_data = MT_CLS_PANASONIC, 1989 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1990 USB_DEVICE_ID_PANABOARD_UBT780) }, 1991 { .driver_data = MT_CLS_PANASONIC, 1992 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1993 USB_DEVICE_ID_PANABOARD_UBT880) }, 1994 1995 /* PixArt optical touch screen */ 1996 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1997 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1998 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1999 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2000 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2001 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2002 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2003 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2004 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2005 2006 /* PixCir-based panels */ 2007 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2008 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2009 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2010 2011 /* Quanta-based panels */ 2012 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2013 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2014 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2015 2016 /* Razer touchpads */ 2017 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2018 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2019 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2020 2021 /* Stantum panels */ 2022 { .driver_data = MT_CLS_CONFIDENCE, 2023 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2024 USB_DEVICE_ID_MTP_STM)}, 2025 2026 /* TopSeed panels */ 2027 { .driver_data = MT_CLS_TOPSEED, 2028 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2029 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2030 2031 /* Touch International panels */ 2032 { .driver_data = MT_CLS_NSMU, 2033 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2034 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2035 2036 /* Unitec panels */ 2037 { .driver_data = MT_CLS_NSMU, 2038 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2039 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2040 { .driver_data = MT_CLS_NSMU, 2041 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2042 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2043 2044 /* VTL panels */ 2045 { .driver_data = MT_CLS_VTL, 2046 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2047 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2048 2049 /* Wistron panels */ 2050 { .driver_data = MT_CLS_NSMU, 2051 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2052 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2053 2054 /* XAT */ 2055 { .driver_data = MT_CLS_NSMU, 2056 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2057 USB_DEVICE_ID_XAT_CSR) }, 2058 2059 /* Xiroku */ 2060 { .driver_data = MT_CLS_NSMU, 2061 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2062 USB_DEVICE_ID_XIROKU_SPX) }, 2063 { .driver_data = MT_CLS_NSMU, 2064 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2065 USB_DEVICE_ID_XIROKU_MPX) }, 2066 { .driver_data = MT_CLS_NSMU, 2067 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2068 USB_DEVICE_ID_XIROKU_CSR) }, 2069 { .driver_data = MT_CLS_NSMU, 2070 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2071 USB_DEVICE_ID_XIROKU_SPX1) }, 2072 { .driver_data = MT_CLS_NSMU, 2073 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2074 USB_DEVICE_ID_XIROKU_MPX1) }, 2075 { .driver_data = MT_CLS_NSMU, 2076 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2077 USB_DEVICE_ID_XIROKU_CSR1) }, 2078 { .driver_data = MT_CLS_NSMU, 2079 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2080 USB_DEVICE_ID_XIROKU_SPX2) }, 2081 { .driver_data = MT_CLS_NSMU, 2082 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2083 USB_DEVICE_ID_XIROKU_MPX2) }, 2084 { .driver_data = MT_CLS_NSMU, 2085 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2086 USB_DEVICE_ID_XIROKU_CSR2) }, 2087 2088 /* Google MT devices */ 2089 { .driver_data = MT_CLS_GOOGLE, 2090 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2091 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2092 2093 /* Generic MT device */ 2094 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2095 2096 /* Generic Win 8 certified MT device */ 2097 { .driver_data = MT_CLS_WIN_8, 2098 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2099 HID_ANY_ID, HID_ANY_ID) }, 2100 { } 2101 }; 2102 MODULE_DEVICE_TABLE(hid, mt_devices); 2103 2104 static const struct hid_usage_id mt_grabbed_usages[] = { 2105 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2106 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2107 }; 2108 2109 static struct hid_driver mt_driver = { 2110 .name = "hid-multitouch", 2111 .id_table = mt_devices, 2112 .probe = mt_probe, 2113 .remove = mt_remove, 2114 .input_mapping = mt_input_mapping, 2115 .input_mapped = mt_input_mapped, 2116 .input_configured = mt_input_configured, 2117 .feature_mapping = mt_feature_mapping, 2118 .usage_table = mt_grabbed_usages, 2119 .event = mt_event, 2120 .report = mt_report, 2121 #ifdef CONFIG_PM 2122 .reset_resume = mt_reset_resume, 2123 .resume = mt_resume, 2124 #endif 2125 }; 2126 module_hid_driver(mt_driver); 2127