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 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 72 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 73 74 #define MT_INPUTMODE_TOUCHSCREEN 0x02 75 #define MT_INPUTMODE_TOUCHPAD 0x03 76 77 #define MT_BUTTONTYPE_CLICKPAD 0 78 79 enum latency_mode { 80 HID_LATENCY_NORMAL = 0, 81 HID_LATENCY_HIGH = 1, 82 }; 83 84 #define MT_IO_FLAGS_RUNNING 0 85 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 86 #define MT_IO_FLAGS_PENDING_SLOTS 2 87 88 static const bool mtrue = true; /* default for true */ 89 static const bool mfalse; /* default for false */ 90 static const __s32 mzero; /* default for 0 */ 91 92 #define DEFAULT_TRUE ((void *)&mtrue) 93 #define DEFAULT_FALSE ((void *)&mfalse) 94 #define DEFAULT_ZERO ((void *)&mzero) 95 96 struct mt_usages { 97 struct list_head list; 98 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 99 __s32 *contactid; /* the device ContactID assigned to this slot */ 100 bool *tip_state; /* is the touch valid? */ 101 bool *inrange_state; /* is the finger in proximity of the sensor? */ 102 bool *confidence_state; /* is the touch made by a finger? */ 103 }; 104 105 struct mt_application { 106 struct list_head list; 107 unsigned int application; 108 unsigned int report_id; 109 struct list_head mt_usages; /* mt usages list */ 110 111 __s32 quirks; 112 113 __s32 *scantime; /* scantime reported */ 114 __s32 scantime_logical_max; /* max value for raw scantime */ 115 116 __s32 *raw_cc; /* contact count in the report */ 117 int left_button_state; /* left button state */ 118 unsigned int mt_flags; /* flags to pass to input-mt */ 119 120 unsigned long *pending_palm_slots; /* slots where we reported palm 121 * and need to release */ 122 123 __u8 num_received; /* how many contacts we received */ 124 __u8 num_expected; /* expected last contact index */ 125 __u8 buttons_count; /* number of physical buttons per touchpad */ 126 __u8 touches_by_report; /* how many touches are present in one report: 127 * 1 means we should use a serial protocol 128 * > 1 means hybrid (multitouch) protocol 129 */ 130 131 __s32 dev_time; /* the scan time provided by the device */ 132 unsigned long jiffies; /* the frame's jiffies */ 133 int timestamp; /* the timestamp to be sent */ 134 int prev_scantime; /* scantime reported previously */ 135 136 bool have_contact_count; 137 }; 138 139 struct mt_class { 140 __s32 name; /* MT_CLS */ 141 __s32 quirks; 142 __s32 sn_move; /* Signal/noise ratio for move events */ 143 __s32 sn_width; /* Signal/noise ratio for width events */ 144 __s32 sn_height; /* Signal/noise ratio for height events */ 145 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 146 __u8 maxcontacts; 147 bool is_indirect; /* true for touchpads */ 148 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 149 }; 150 151 struct mt_report_data { 152 struct list_head list; 153 struct hid_report *report; 154 struct mt_application *application; 155 bool is_mt_collection; 156 }; 157 158 struct mt_device { 159 struct mt_class mtclass; /* our mt device class */ 160 struct timer_list release_timer; /* to release sticky fingers */ 161 struct hid_device *hdev; /* hid_device we're attached to */ 162 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 163 __u8 inputmode_value; /* InputMode HID feature value */ 164 __u8 maxcontacts; 165 bool is_buttonpad; /* is this device a button pad? */ 166 bool serial_maybe; /* need to check for serial protocol */ 167 168 struct list_head applications; 169 struct list_head reports; 170 }; 171 172 static void mt_post_parse_default_settings(struct mt_device *td, 173 struct mt_application *app); 174 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 175 176 /* classes of device behavior */ 177 #define MT_CLS_DEFAULT 0x0001 178 179 #define MT_CLS_SERIAL 0x0002 180 #define MT_CLS_CONFIDENCE 0x0003 181 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 182 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 183 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 184 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 185 /* reserved 0x0008 */ 186 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 187 #define MT_CLS_NSMU 0x000a 188 /* reserved 0x0010 */ 189 /* reserved 0x0011 */ 190 #define MT_CLS_WIN_8 0x0012 191 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 192 /* reserved 0x0014 */ 193 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 194 195 /* vendor specific classes */ 196 #define MT_CLS_3M 0x0101 197 /* reserved 0x0102 */ 198 #define MT_CLS_EGALAX 0x0103 199 #define MT_CLS_EGALAX_SERIAL 0x0104 200 #define MT_CLS_TOPSEED 0x0105 201 #define MT_CLS_PANASONIC 0x0106 202 #define MT_CLS_FLATFROG 0x0107 203 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 204 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 205 #define MT_CLS_LG 0x010a 206 #define MT_CLS_ASUS 0x010b 207 #define MT_CLS_VTL 0x0110 208 #define MT_CLS_GOOGLE 0x0111 209 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 210 #define MT_CLS_SMART_TECH 0x0113 211 212 #define MT_DEFAULT_MAXCONTACT 10 213 #define MT_MAX_MAXCONTACT 250 214 215 /* 216 * Resync device and local timestamps after that many microseconds without 217 * receiving data. 218 */ 219 #define MAX_TIMESTAMP_INTERVAL 1000000 220 221 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 222 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 223 224 /* 225 * these device-dependent functions determine what slot corresponds 226 * to a valid contact that was just read. 227 */ 228 229 static int cypress_compute_slot(struct mt_application *application, 230 struct mt_usages *slot) 231 { 232 if (*slot->contactid != 0 || application->num_received == 0) 233 return *slot->contactid; 234 else 235 return -1; 236 } 237 238 static const struct mt_class mt_classes[] = { 239 { .name = MT_CLS_DEFAULT, 240 .quirks = MT_QUIRK_ALWAYS_VALID | 241 MT_QUIRK_CONTACT_CNT_ACCURATE }, 242 { .name = MT_CLS_NSMU, 243 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 244 { .name = MT_CLS_SERIAL, 245 .quirks = MT_QUIRK_ALWAYS_VALID}, 246 { .name = MT_CLS_CONFIDENCE, 247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 248 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 249 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 250 MT_QUIRK_SLOT_IS_CONTACTID }, 251 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 252 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 253 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 254 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 255 .quirks = MT_QUIRK_VALID_IS_INRANGE | 256 MT_QUIRK_SLOT_IS_CONTACTID, 257 .maxcontacts = 2 }, 258 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 259 .quirks = MT_QUIRK_VALID_IS_INRANGE | 260 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 261 .maxcontacts = 2 }, 262 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 263 .quirks = MT_QUIRK_VALID_IS_INRANGE | 264 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 265 { .name = MT_CLS_WIN_8, 266 .quirks = MT_QUIRK_ALWAYS_VALID | 267 MT_QUIRK_IGNORE_DUPLICATES | 268 MT_QUIRK_HOVERING | 269 MT_QUIRK_CONTACT_CNT_ACCURATE | 270 MT_QUIRK_STICKY_FINGERS | 271 MT_QUIRK_WIN8_PTP_BUTTONS, 272 .export_all_inputs = true }, 273 { .name = MT_CLS_EXPORT_ALL_INPUTS, 274 .quirks = MT_QUIRK_ALWAYS_VALID | 275 MT_QUIRK_CONTACT_CNT_ACCURATE, 276 .export_all_inputs = true }, 277 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 278 .quirks = MT_QUIRK_ALWAYS_VALID | 279 MT_QUIRK_IGNORE_DUPLICATES | 280 MT_QUIRK_HOVERING | 281 MT_QUIRK_CONTACT_CNT_ACCURATE | 282 MT_QUIRK_STICKY_FINGERS | 283 MT_QUIRK_WIN8_PTP_BUTTONS | 284 MT_QUIRK_FORCE_MULTI_INPUT, 285 .export_all_inputs = true }, 286 287 /* 288 * vendor specific classes 289 */ 290 { .name = MT_CLS_3M, 291 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 292 MT_QUIRK_SLOT_IS_CONTACTID | 293 MT_QUIRK_TOUCH_SIZE_SCALING, 294 .sn_move = 2048, 295 .sn_width = 128, 296 .sn_height = 128, 297 .maxcontacts = 60, 298 }, 299 { .name = MT_CLS_EGALAX, 300 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 301 MT_QUIRK_VALID_IS_INRANGE, 302 .sn_move = 4096, 303 .sn_pressure = 32, 304 }, 305 { .name = MT_CLS_EGALAX_SERIAL, 306 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 307 MT_QUIRK_ALWAYS_VALID, 308 .sn_move = 4096, 309 .sn_pressure = 32, 310 }, 311 { .name = MT_CLS_TOPSEED, 312 .quirks = MT_QUIRK_ALWAYS_VALID, 313 .is_indirect = true, 314 .maxcontacts = 2, 315 }, 316 { .name = MT_CLS_PANASONIC, 317 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 318 .maxcontacts = 4 }, 319 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 320 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 321 MT_QUIRK_VALID_IS_INRANGE | 322 MT_QUIRK_SLOT_IS_CONTACTID, 323 .maxcontacts = 2 324 }, 325 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 326 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 327 MT_QUIRK_SLOT_IS_CONTACTID 328 }, 329 330 { .name = MT_CLS_FLATFROG, 331 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 332 MT_QUIRK_NO_AREA, 333 .sn_move = 2048, 334 .maxcontacts = 40, 335 }, 336 { .name = MT_CLS_LG, 337 .quirks = MT_QUIRK_ALWAYS_VALID | 338 MT_QUIRK_FIX_CONST_CONTACT_ID | 339 MT_QUIRK_IGNORE_DUPLICATES | 340 MT_QUIRK_HOVERING | 341 MT_QUIRK_CONTACT_CNT_ACCURATE }, 342 { .name = MT_CLS_ASUS, 343 .quirks = MT_QUIRK_ALWAYS_VALID | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_ASUS_CUSTOM_UP }, 346 { .name = MT_CLS_VTL, 347 .quirks = MT_QUIRK_ALWAYS_VALID | 348 MT_QUIRK_CONTACT_CNT_ACCURATE | 349 MT_QUIRK_FORCE_GET_FEATURE, 350 }, 351 { .name = MT_CLS_GOOGLE, 352 .quirks = MT_QUIRK_ALWAYS_VALID | 353 MT_QUIRK_CONTACT_CNT_ACCURATE | 354 MT_QUIRK_SLOT_IS_CONTACTID | 355 MT_QUIRK_HOVERING 356 }, 357 { .name = MT_CLS_RAZER_BLADE_STEALTH, 358 .quirks = MT_QUIRK_ALWAYS_VALID | 359 MT_QUIRK_IGNORE_DUPLICATES | 360 MT_QUIRK_HOVERING | 361 MT_QUIRK_CONTACT_CNT_ACCURATE | 362 MT_QUIRK_WIN8_PTP_BUTTONS, 363 }, 364 { .name = MT_CLS_SMART_TECH, 365 .quirks = MT_QUIRK_ALWAYS_VALID | 366 MT_QUIRK_IGNORE_DUPLICATES | 367 MT_QUIRK_CONTACT_CNT_ACCURATE | 368 MT_QUIRK_SEPARATE_APP_REPORT, 369 }, 370 { } 371 }; 372 373 static ssize_t mt_show_quirks(struct device *dev, 374 struct device_attribute *attr, 375 char *buf) 376 { 377 struct hid_device *hdev = to_hid_device(dev); 378 struct mt_device *td = hid_get_drvdata(hdev); 379 380 return sprintf(buf, "%u\n", td->mtclass.quirks); 381 } 382 383 static ssize_t mt_set_quirks(struct device *dev, 384 struct device_attribute *attr, 385 const char *buf, size_t count) 386 { 387 struct hid_device *hdev = to_hid_device(dev); 388 struct mt_device *td = hid_get_drvdata(hdev); 389 struct mt_application *application; 390 391 unsigned long val; 392 393 if (kstrtoul(buf, 0, &val)) 394 return -EINVAL; 395 396 td->mtclass.quirks = val; 397 398 list_for_each_entry(application, &td->applications, list) { 399 application->quirks = val; 400 if (!application->have_contact_count) 401 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 402 } 403 404 return count; 405 } 406 407 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 408 409 static struct attribute *sysfs_attrs[] = { 410 &dev_attr_quirks.attr, 411 NULL 412 }; 413 414 static const struct attribute_group mt_attribute_group = { 415 .attrs = sysfs_attrs 416 }; 417 418 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 419 { 420 int ret; 421 u32 size = hid_report_len(report); 422 u8 *buf; 423 424 /* 425 * Do not fetch the feature report if the device has been explicitly 426 * marked as non-capable. 427 */ 428 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 429 return; 430 431 buf = hid_alloc_report_buf(report, GFP_KERNEL); 432 if (!buf) 433 return; 434 435 ret = hid_hw_raw_request(hdev, report->id, buf, size, 436 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 437 if (ret < 0) { 438 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 439 report->id); 440 } else { 441 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 442 size, 0); 443 if (ret) 444 dev_warn(&hdev->dev, "failed to report feature\n"); 445 } 446 447 kfree(buf); 448 } 449 450 static void mt_feature_mapping(struct hid_device *hdev, 451 struct hid_field *field, struct hid_usage *usage) 452 { 453 struct mt_device *td = hid_get_drvdata(hdev); 454 455 switch (usage->hid) { 456 case HID_DG_CONTACTMAX: 457 mt_get_feature(hdev, field->report); 458 459 td->maxcontacts = field->value[0]; 460 if (!td->maxcontacts && 461 field->logical_maximum <= MT_MAX_MAXCONTACT) 462 td->maxcontacts = field->logical_maximum; 463 if (td->mtclass.maxcontacts) 464 /* check if the maxcontacts is given by the class */ 465 td->maxcontacts = td->mtclass.maxcontacts; 466 467 break; 468 case HID_DG_BUTTONTYPE: 469 if (usage->usage_index >= field->report_count) { 470 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 471 break; 472 } 473 474 mt_get_feature(hdev, field->report); 475 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 476 td->is_buttonpad = true; 477 478 break; 479 case 0xff0000c5: 480 /* Retrieve the Win8 blob once to enable some devices */ 481 if (usage->usage_index == 0) 482 mt_get_feature(hdev, field->report); 483 break; 484 } 485 } 486 487 static void set_abs(struct input_dev *input, unsigned int code, 488 struct hid_field *field, int snratio) 489 { 490 int fmin = field->logical_minimum; 491 int fmax = field->logical_maximum; 492 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 493 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 494 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 495 } 496 497 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 498 struct mt_application *application) 499 { 500 struct mt_usages *usage; 501 502 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 503 if (!usage) 504 return NULL; 505 506 /* set some defaults so we do not need to check for null pointers */ 507 usage->x = DEFAULT_ZERO; 508 usage->y = DEFAULT_ZERO; 509 usage->cx = DEFAULT_ZERO; 510 usage->cy = DEFAULT_ZERO; 511 usage->p = DEFAULT_ZERO; 512 usage->w = DEFAULT_ZERO; 513 usage->h = DEFAULT_ZERO; 514 usage->a = DEFAULT_ZERO; 515 usage->contactid = DEFAULT_ZERO; 516 usage->tip_state = DEFAULT_FALSE; 517 usage->inrange_state = DEFAULT_FALSE; 518 usage->confidence_state = DEFAULT_TRUE; 519 520 list_add_tail(&usage->list, &application->mt_usages); 521 522 return usage; 523 } 524 525 static struct mt_application *mt_allocate_application(struct mt_device *td, 526 struct hid_report *report) 527 { 528 unsigned int application = report->application; 529 struct mt_application *mt_application; 530 531 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 532 GFP_KERNEL); 533 if (!mt_application) 534 return NULL; 535 536 mt_application->application = application; 537 INIT_LIST_HEAD(&mt_application->mt_usages); 538 539 if (application == HID_DG_TOUCHSCREEN) 540 mt_application->mt_flags |= INPUT_MT_DIRECT; 541 542 /* 543 * Model touchscreens providing buttons as touchpads. 544 */ 545 if (application == HID_DG_TOUCHPAD) { 546 mt_application->mt_flags |= INPUT_MT_POINTER; 547 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 548 } 549 550 mt_application->scantime = DEFAULT_ZERO; 551 mt_application->raw_cc = DEFAULT_ZERO; 552 mt_application->quirks = td->mtclass.quirks; 553 mt_application->report_id = report->id; 554 555 list_add_tail(&mt_application->list, &td->applications); 556 557 return mt_application; 558 } 559 560 static struct mt_application *mt_find_application(struct mt_device *td, 561 struct hid_report *report) 562 { 563 unsigned int application = report->application; 564 struct mt_application *tmp, *mt_application = NULL; 565 566 list_for_each_entry(tmp, &td->applications, list) { 567 if (application == tmp->application) { 568 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 569 tmp->report_id == report->id) { 570 mt_application = tmp; 571 break; 572 } 573 } 574 } 575 576 if (!mt_application) 577 mt_application = mt_allocate_application(td, report); 578 579 return mt_application; 580 } 581 582 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 583 struct hid_report *report) 584 { 585 struct mt_report_data *rdata; 586 struct hid_field *field; 587 int r, n; 588 589 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 590 if (!rdata) 591 return NULL; 592 593 rdata->report = report; 594 rdata->application = mt_find_application(td, report); 595 596 if (!rdata->application) { 597 devm_kfree(&td->hdev->dev, rdata); 598 return NULL; 599 } 600 601 for (r = 0; r < report->maxfield; r++) { 602 field = report->field[r]; 603 604 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 605 continue; 606 607 for (n = 0; n < field->report_count; n++) { 608 if (field->usage[n].hid == HID_DG_CONTACTID) 609 rdata->is_mt_collection = true; 610 } 611 } 612 613 list_add_tail(&rdata->list, &td->reports); 614 615 return rdata; 616 } 617 618 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 619 struct hid_report *report) 620 { 621 struct mt_report_data *tmp, *rdata = NULL; 622 623 list_for_each_entry(tmp, &td->reports, list) { 624 if (report == tmp->report) { 625 rdata = tmp; 626 break; 627 } 628 } 629 630 if (!rdata) 631 rdata = mt_allocate_report_data(td, report); 632 633 return rdata; 634 } 635 636 static void mt_store_field(struct hid_device *hdev, 637 struct mt_application *application, 638 __s32 *value, 639 size_t offset) 640 { 641 struct mt_usages *usage; 642 __s32 **target; 643 644 if (list_empty(&application->mt_usages)) 645 usage = mt_allocate_usage(hdev, application); 646 else 647 usage = list_last_entry(&application->mt_usages, 648 struct mt_usages, 649 list); 650 651 if (!usage) 652 return; 653 654 target = (__s32 **)((char *)usage + offset); 655 656 /* the value has already been filled, create a new slot */ 657 if (*target != DEFAULT_TRUE && 658 *target != DEFAULT_FALSE && 659 *target != DEFAULT_ZERO) { 660 if (usage->contactid == DEFAULT_ZERO || 661 usage->x == DEFAULT_ZERO || 662 usage->y == DEFAULT_ZERO) { 663 hid_dbg(hdev, 664 "ignoring duplicate usage on incomplete"); 665 return; 666 } 667 usage = mt_allocate_usage(hdev, application); 668 if (!usage) 669 return; 670 671 target = (__s32 **)((char *)usage + offset); 672 } 673 674 *target = value; 675 } 676 677 #define MT_STORE_FIELD(__name) \ 678 mt_store_field(hdev, app, \ 679 &field->value[usage->usage_index], \ 680 offsetof(struct mt_usages, __name)) 681 682 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 683 struct hid_field *field, struct hid_usage *usage, 684 unsigned long **bit, int *max, struct mt_application *app) 685 { 686 struct mt_device *td = hid_get_drvdata(hdev); 687 struct mt_class *cls = &td->mtclass; 688 int code; 689 struct hid_usage *prev_usage = NULL; 690 691 /* 692 * Model touchscreens providing buttons as touchpads. 693 */ 694 if (field->application == HID_DG_TOUCHSCREEN && 695 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 696 app->mt_flags |= INPUT_MT_POINTER; 697 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 698 } 699 700 /* count the buttons on touchpads */ 701 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 702 app->buttons_count++; 703 704 if (usage->usage_index) 705 prev_usage = &field->usage[usage->usage_index - 1]; 706 707 switch (usage->hid & HID_USAGE_PAGE) { 708 709 case HID_UP_GENDESK: 710 switch (usage->hid) { 711 case HID_GD_X: 712 if (prev_usage && (prev_usage->hid == usage->hid)) { 713 code = ABS_MT_TOOL_X; 714 MT_STORE_FIELD(cx); 715 } else { 716 code = ABS_MT_POSITION_X; 717 MT_STORE_FIELD(x); 718 } 719 720 set_abs(hi->input, code, field, cls->sn_move); 721 722 /* 723 * A system multi-axis that exports X and Y has a high 724 * chance of being used directly on a surface 725 */ 726 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 727 __set_bit(INPUT_PROP_DIRECT, 728 hi->input->propbit); 729 input_set_abs_params(hi->input, 730 ABS_MT_TOOL_TYPE, 731 MT_TOOL_DIAL, 732 MT_TOOL_DIAL, 0, 0); 733 } 734 735 return 1; 736 case HID_GD_Y: 737 if (prev_usage && (prev_usage->hid == usage->hid)) { 738 code = ABS_MT_TOOL_Y; 739 MT_STORE_FIELD(cy); 740 } else { 741 code = ABS_MT_POSITION_Y; 742 MT_STORE_FIELD(y); 743 } 744 745 set_abs(hi->input, code, field, cls->sn_move); 746 747 return 1; 748 } 749 return 0; 750 751 case HID_UP_DIGITIZER: 752 switch (usage->hid) { 753 case HID_DG_INRANGE: 754 if (app->quirks & MT_QUIRK_HOVERING) { 755 input_set_abs_params(hi->input, 756 ABS_MT_DISTANCE, 0, 1, 0, 0); 757 } 758 MT_STORE_FIELD(inrange_state); 759 return 1; 760 case HID_DG_CONFIDENCE: 761 if (cls->name == MT_CLS_WIN_8 && 762 (field->application == HID_DG_TOUCHPAD || 763 field->application == HID_DG_TOUCHSCREEN)) 764 app->quirks |= MT_QUIRK_CONFIDENCE; 765 766 if (app->quirks & MT_QUIRK_CONFIDENCE) 767 input_set_abs_params(hi->input, 768 ABS_MT_TOOL_TYPE, 769 MT_TOOL_FINGER, 770 MT_TOOL_PALM, 0, 0); 771 772 MT_STORE_FIELD(confidence_state); 773 return 1; 774 case HID_DG_TIPSWITCH: 775 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 776 input_set_capability(hi->input, 777 EV_KEY, BTN_TOUCH); 778 MT_STORE_FIELD(tip_state); 779 return 1; 780 case HID_DG_CONTACTID: 781 MT_STORE_FIELD(contactid); 782 app->touches_by_report++; 783 return 1; 784 case HID_DG_WIDTH: 785 if (!(app->quirks & MT_QUIRK_NO_AREA)) 786 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 787 cls->sn_width); 788 MT_STORE_FIELD(w); 789 return 1; 790 case HID_DG_HEIGHT: 791 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 792 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 793 cls->sn_height); 794 795 /* 796 * Only set ABS_MT_ORIENTATION if it is not 797 * already set by the HID_DG_AZIMUTH usage. 798 */ 799 if (!test_bit(ABS_MT_ORIENTATION, 800 hi->input->absbit)) 801 input_set_abs_params(hi->input, 802 ABS_MT_ORIENTATION, 0, 1, 0, 0); 803 } 804 MT_STORE_FIELD(h); 805 return 1; 806 case HID_DG_TIPPRESSURE: 807 set_abs(hi->input, ABS_MT_PRESSURE, field, 808 cls->sn_pressure); 809 MT_STORE_FIELD(p); 810 return 1; 811 case HID_DG_SCANTIME: 812 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 813 app->scantime = &field->value[usage->usage_index]; 814 app->scantime_logical_max = field->logical_maximum; 815 return 1; 816 case HID_DG_CONTACTCOUNT: 817 app->have_contact_count = true; 818 app->raw_cc = &field->value[usage->usage_index]; 819 return 1; 820 case HID_DG_AZIMUTH: 821 /* 822 * Azimuth has the range of [0, MAX) representing a full 823 * revolution. Set ABS_MT_ORIENTATION to a quarter of 824 * MAX according the definition of ABS_MT_ORIENTATION 825 */ 826 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 827 -field->logical_maximum / 4, 828 field->logical_maximum / 4, 829 cls->sn_move ? 830 field->logical_maximum / cls->sn_move : 0, 0); 831 MT_STORE_FIELD(a); 832 return 1; 833 case HID_DG_CONTACTMAX: 834 /* contact max are global to the report */ 835 return -1; 836 case HID_DG_TOUCH: 837 /* Legacy devices use TIPSWITCH and not TOUCH. 838 * Let's just ignore this field. */ 839 return -1; 840 } 841 /* let hid-input decide for the others */ 842 return 0; 843 844 case HID_UP_BUTTON: 845 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 846 /* 847 * MS PTP spec says that external buttons left and right have 848 * usages 2 and 3. 849 */ 850 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 851 field->application == HID_DG_TOUCHPAD && 852 (usage->hid & HID_USAGE) > 1) 853 code--; 854 855 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 856 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 857 858 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 859 if (!*bit) 860 return -1; 861 input_set_capability(hi->input, EV_KEY, code); 862 return 1; 863 864 case 0xff000000: 865 /* we do not want to map these: no input-oriented meaning */ 866 return -1; 867 } 868 869 return 0; 870 } 871 872 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 873 struct mt_usages *slot, 874 struct input_dev *input) 875 { 876 __s32 quirks = app->quirks; 877 878 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 879 return *slot->contactid; 880 881 if (quirks & MT_QUIRK_CYPRESS) 882 return cypress_compute_slot(app, slot); 883 884 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 885 return app->num_received; 886 887 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 888 return *slot->contactid - 1; 889 890 return input_mt_get_slot_by_key(input, *slot->contactid); 891 } 892 893 static void mt_release_pending_palms(struct mt_device *td, 894 struct mt_application *app, 895 struct input_dev *input) 896 { 897 int slotnum; 898 bool need_sync = false; 899 900 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 901 clear_bit(slotnum, app->pending_palm_slots); 902 903 input_mt_slot(input, slotnum); 904 input_mt_report_slot_inactive(input); 905 906 need_sync = true; 907 } 908 909 if (need_sync) { 910 input_mt_sync_frame(input); 911 input_sync(input); 912 } 913 } 914 915 /* 916 * this function is called when a whole packet has been received and processed, 917 * so that it can decide what to send to the input layer. 918 */ 919 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 920 struct input_dev *input) 921 { 922 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 923 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 924 925 input_mt_sync_frame(input); 926 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 927 input_sync(input); 928 929 mt_release_pending_palms(td, app, input); 930 931 app->num_received = 0; 932 app->left_button_state = 0; 933 934 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 935 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 936 else 937 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 938 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 939 } 940 941 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 942 { 943 long delta = value - app->prev_scantime; 944 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 945 946 app->jiffies = jiffies; 947 948 if (delta < 0) 949 delta += app->scantime_logical_max; 950 951 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 952 delta *= 100; 953 954 if (jdelta > MAX_TIMESTAMP_INTERVAL) 955 /* No data received for a while, resync the timestamp. */ 956 return 0; 957 else 958 return app->timestamp + delta; 959 } 960 961 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 962 struct hid_usage *usage, __s32 value) 963 { 964 /* we will handle the hidinput part later, now remains hiddev */ 965 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 966 hid->hiddev_hid_event(hid, field, usage, value); 967 968 return 1; 969 } 970 971 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 972 struct mt_application *app, 973 struct mt_usages *slot) 974 { 975 struct input_mt *mt = input->mt; 976 __s32 quirks = app->quirks; 977 bool valid = true; 978 bool confidence_state = true; 979 bool inrange_state = false; 980 int active; 981 int slotnum; 982 int tool = MT_TOOL_FINGER; 983 984 if (!slot) 985 return -EINVAL; 986 987 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 988 app->num_received >= app->num_expected) 989 return -EAGAIN; 990 991 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 992 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 993 valid = *slot->inrange_state; 994 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 995 valid = *slot->tip_state; 996 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 997 valid = *slot->confidence_state; 998 999 if (!valid) 1000 return 0; 1001 } 1002 1003 slotnum = mt_compute_slot(td, app, slot, input); 1004 if (slotnum < 0 || slotnum >= td->maxcontacts) 1005 return 0; 1006 1007 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1008 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1009 1010 if (input_mt_is_active(i_slot) && 1011 input_mt_is_used(mt, i_slot)) 1012 return -EAGAIN; 1013 } 1014 1015 if (quirks & MT_QUIRK_CONFIDENCE) 1016 confidence_state = *slot->confidence_state; 1017 1018 if (quirks & MT_QUIRK_HOVERING) 1019 inrange_state = *slot->inrange_state; 1020 1021 active = *slot->tip_state || inrange_state; 1022 1023 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1024 tool = MT_TOOL_DIAL; 1025 else if (unlikely(!confidence_state)) { 1026 tool = MT_TOOL_PALM; 1027 if (!active && mt && 1028 input_mt_is_active(&mt->slots[slotnum])) { 1029 /* 1030 * The non-confidence was reported for 1031 * previously valid contact that is also no 1032 * longer valid. We can't simply report 1033 * lift-off as userspace will not be aware 1034 * of non-confidence, so we need to split 1035 * it into 2 events: active MT_TOOL_PALM 1036 * and a separate liftoff. 1037 */ 1038 active = true; 1039 set_bit(slotnum, app->pending_palm_slots); 1040 } 1041 } 1042 1043 input_mt_slot(input, slotnum); 1044 input_mt_report_slot_state(input, tool, active); 1045 if (active) { 1046 /* this finger is in proximity of the sensor */ 1047 int wide = (*slot->w > *slot->h); 1048 int major = max(*slot->w, *slot->h); 1049 int minor = min(*slot->w, *slot->h); 1050 int orientation = wide; 1051 int max_azimuth; 1052 int azimuth; 1053 1054 if (slot->a != DEFAULT_ZERO) { 1055 /* 1056 * Azimuth is counter-clockwise and ranges from [0, MAX) 1057 * (a full revolution). Convert it to clockwise ranging 1058 * [-MAX/2, MAX/2]. 1059 * 1060 * Note that ABS_MT_ORIENTATION require us to report 1061 * the limit of [-MAX/4, MAX/4], but the value can go 1062 * out of range to [-MAX/2, MAX/2] to report an upside 1063 * down ellipsis. 1064 */ 1065 azimuth = *slot->a; 1066 max_azimuth = input_abs_get_max(input, 1067 ABS_MT_ORIENTATION); 1068 if (azimuth > max_azimuth * 2) 1069 azimuth -= max_azimuth * 4; 1070 orientation = -azimuth; 1071 } 1072 1073 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1074 /* 1075 * divided by two to match visual scale of touch 1076 * for devices with this quirk 1077 */ 1078 major = major >> 1; 1079 minor = minor >> 1; 1080 } 1081 1082 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1083 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1084 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1085 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1086 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1087 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1088 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1089 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1090 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1091 1092 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1093 } 1094 1095 return 0; 1096 } 1097 1098 static void mt_process_mt_event(struct hid_device *hid, 1099 struct mt_application *app, 1100 struct hid_field *field, 1101 struct hid_usage *usage, 1102 __s32 value, 1103 bool first_packet) 1104 { 1105 __s32 quirks = app->quirks; 1106 struct input_dev *input = field->hidinput->input; 1107 1108 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1109 return; 1110 1111 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1112 1113 /* 1114 * For Win8 PTP touchpads we should only look at 1115 * non finger/touch events in the first_packet of a 1116 * (possible) multi-packet frame. 1117 */ 1118 if (!first_packet) 1119 return; 1120 1121 /* 1122 * For Win8 PTP touchpads we map both the clickpad click 1123 * and any "external" left buttons to BTN_LEFT if a 1124 * device claims to have both we need to report 1 for 1125 * BTN_LEFT if either is pressed, so we or all values 1126 * together and report the result in mt_sync_frame(). 1127 */ 1128 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1129 app->left_button_state |= value; 1130 return; 1131 } 1132 } 1133 1134 input_event(input, usage->type, usage->code, value); 1135 } 1136 1137 static void mt_touch_report(struct hid_device *hid, 1138 struct mt_report_data *rdata) 1139 { 1140 struct mt_device *td = hid_get_drvdata(hid); 1141 struct hid_report *report = rdata->report; 1142 struct mt_application *app = rdata->application; 1143 struct hid_field *field; 1144 struct input_dev *input; 1145 struct mt_usages *slot; 1146 bool first_packet; 1147 unsigned count; 1148 int r, n; 1149 int scantime = 0; 1150 int contact_count = -1; 1151 1152 /* sticky fingers release in progress, abort */ 1153 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1154 return; 1155 1156 scantime = *app->scantime; 1157 app->timestamp = mt_compute_timestamp(app, scantime); 1158 if (app->raw_cc != DEFAULT_ZERO) 1159 contact_count = *app->raw_cc; 1160 1161 /* 1162 * Includes multi-packet support where subsequent 1163 * packets are sent with zero contactcount. 1164 */ 1165 if (contact_count >= 0) { 1166 /* 1167 * For Win8 PTPs the first packet (td->num_received == 0) may 1168 * have a contactcount of 0 if there only is a button event. 1169 * We double check that this is not a continuation packet 1170 * of a possible multi-packet frame be checking that the 1171 * timestamp has changed. 1172 */ 1173 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1174 app->num_received == 0 && 1175 app->prev_scantime != scantime) 1176 app->num_expected = contact_count; 1177 /* A non 0 contact count always indicates a first packet */ 1178 else if (contact_count) 1179 app->num_expected = contact_count; 1180 } 1181 app->prev_scantime = scantime; 1182 1183 first_packet = app->num_received == 0; 1184 1185 input = report->field[0]->hidinput->input; 1186 1187 list_for_each_entry(slot, &app->mt_usages, list) { 1188 if (!mt_process_slot(td, input, app, slot)) 1189 app->num_received++; 1190 } 1191 1192 for (r = 0; r < report->maxfield; r++) { 1193 field = report->field[r]; 1194 count = field->report_count; 1195 1196 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1197 continue; 1198 1199 for (n = 0; n < count; n++) 1200 mt_process_mt_event(hid, app, field, 1201 &field->usage[n], field->value[n], 1202 first_packet); 1203 } 1204 1205 if (app->num_received >= app->num_expected) 1206 mt_sync_frame(td, app, input); 1207 1208 /* 1209 * Windows 8 specs says 2 things: 1210 * - once a contact has been reported, it has to be reported in each 1211 * subsequent report 1212 * - the report rate when fingers are present has to be at least 1213 * the refresh rate of the screen, 60 or 120 Hz 1214 * 1215 * I interprete this that the specification forces a report rate of 1216 * at least 60 Hz for a touchscreen to be certified. 1217 * Which means that if we do not get a report whithin 16 ms, either 1218 * something wrong happens, either the touchscreen forgets to send 1219 * a release. Taking a reasonable margin allows to remove issues 1220 * with USB communication or the load of the machine. 1221 * 1222 * Given that Win 8 devices are forced to send a release, this will 1223 * only affect laggish machines and the ones that have a firmware 1224 * defect. 1225 */ 1226 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1227 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1228 mod_timer(&td->release_timer, 1229 jiffies + msecs_to_jiffies(100)); 1230 else 1231 del_timer(&td->release_timer); 1232 } 1233 1234 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1235 } 1236 1237 static int mt_touch_input_configured(struct hid_device *hdev, 1238 struct hid_input *hi, 1239 struct mt_application *app) 1240 { 1241 struct mt_device *td = hid_get_drvdata(hdev); 1242 struct mt_class *cls = &td->mtclass; 1243 struct input_dev *input = hi->input; 1244 int ret; 1245 1246 if (!td->maxcontacts) 1247 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1248 1249 mt_post_parse(td, app); 1250 if (td->serial_maybe) 1251 mt_post_parse_default_settings(td, app); 1252 1253 if (cls->is_indirect) 1254 app->mt_flags |= INPUT_MT_POINTER; 1255 1256 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1257 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1258 1259 /* check for clickpads */ 1260 if ((app->mt_flags & INPUT_MT_POINTER) && 1261 (app->buttons_count == 1)) 1262 td->is_buttonpad = true; 1263 1264 if (td->is_buttonpad) 1265 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1266 1267 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1268 BITS_TO_LONGS(td->maxcontacts), 1269 sizeof(long), 1270 GFP_KERNEL); 1271 if (!app->pending_palm_slots) 1272 return -ENOMEM; 1273 1274 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1275 if (ret) 1276 return ret; 1277 1278 app->mt_flags = 0; 1279 return 0; 1280 } 1281 1282 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1283 max, EV_KEY, (c)) 1284 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1285 struct hid_field *field, struct hid_usage *usage, 1286 unsigned long **bit, int *max) 1287 { 1288 struct mt_device *td = hid_get_drvdata(hdev); 1289 struct mt_application *application; 1290 struct mt_report_data *rdata; 1291 1292 rdata = mt_find_report_data(td, field->report); 1293 if (!rdata) { 1294 hid_err(hdev, "failed to allocate data for report\n"); 1295 return 0; 1296 } 1297 1298 application = rdata->application; 1299 1300 /* 1301 * If mtclass.export_all_inputs is not set, only map fields from 1302 * TouchScreen or TouchPad collections. We need to ignore fields 1303 * that belong to other collections such as Mouse that might have 1304 * the same GenericDesktop usages. 1305 */ 1306 if (!td->mtclass.export_all_inputs && 1307 field->application != HID_DG_TOUCHSCREEN && 1308 field->application != HID_DG_PEN && 1309 field->application != HID_DG_TOUCHPAD && 1310 field->application != HID_GD_KEYBOARD && 1311 field->application != HID_GD_SYSTEM_CONTROL && 1312 field->application != HID_CP_CONSUMER_CONTROL && 1313 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1314 field->application != HID_GD_SYSTEM_MULTIAXIS && 1315 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1316 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1317 return -1; 1318 1319 /* 1320 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1321 * touchpad report descriptor. We need to treat these as an array to 1322 * map usages to input keys. 1323 */ 1324 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1325 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1326 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1327 set_bit(EV_REP, hi->input->evbit); 1328 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1329 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1330 switch (usage->hid & HID_USAGE) { 1331 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1332 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1333 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1334 case 0x6b: mt_map_key_clear(KEY_F21); break; 1335 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1336 default: 1337 return -1; 1338 } 1339 return 1; 1340 } 1341 1342 if (rdata->is_mt_collection) 1343 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1344 application); 1345 1346 /* 1347 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1348 * for the stylus. Overwrite the hid_input application 1349 */ 1350 if (field->physical == HID_DG_STYLUS) 1351 hi->application = HID_DG_STYLUS; 1352 1353 /* let hid-core decide for the others */ 1354 return 0; 1355 } 1356 1357 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1358 struct hid_field *field, struct hid_usage *usage, 1359 unsigned long **bit, int *max) 1360 { 1361 struct mt_device *td = hid_get_drvdata(hdev); 1362 struct mt_report_data *rdata; 1363 1364 rdata = mt_find_report_data(td, field->report); 1365 if (rdata && rdata->is_mt_collection) { 1366 /* We own these mappings, tell hid-input to ignore them */ 1367 return -1; 1368 } 1369 1370 /* let hid-core decide for the others */ 1371 return 0; 1372 } 1373 1374 static int mt_event(struct hid_device *hid, struct hid_field *field, 1375 struct hid_usage *usage, __s32 value) 1376 { 1377 struct mt_device *td = hid_get_drvdata(hid); 1378 struct mt_report_data *rdata; 1379 1380 rdata = mt_find_report_data(td, field->report); 1381 if (rdata && rdata->is_mt_collection) 1382 return mt_touch_event(hid, field, usage, value); 1383 1384 return 0; 1385 } 1386 1387 static void mt_report(struct hid_device *hid, struct hid_report *report) 1388 { 1389 struct mt_device *td = hid_get_drvdata(hid); 1390 struct hid_field *field = report->field[0]; 1391 struct mt_report_data *rdata; 1392 1393 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1394 return; 1395 1396 rdata = mt_find_report_data(td, report); 1397 if (rdata && rdata->is_mt_collection) 1398 return mt_touch_report(hid, rdata); 1399 1400 if (field && field->hidinput && field->hidinput->input) 1401 input_sync(field->hidinput->input); 1402 } 1403 1404 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1405 struct hid_field *field, 1406 struct hid_usage *usage, 1407 enum latency_mode latency, 1408 bool surface_switch, 1409 bool button_switch, 1410 bool *inputmode_found) 1411 { 1412 struct mt_device *td = hid_get_drvdata(hdev); 1413 struct mt_class *cls = &td->mtclass; 1414 struct hid_report *report = field->report; 1415 unsigned int index = usage->usage_index; 1416 char *buf; 1417 u32 report_len; 1418 int max; 1419 1420 switch (usage->hid) { 1421 case HID_DG_INPUTMODE: 1422 /* 1423 * Some elan panels wrongly declare 2 input mode features, 1424 * and silently ignore when we set the value in the second 1425 * field. Skip the second feature and hope for the best. 1426 */ 1427 if (*inputmode_found) 1428 return false; 1429 1430 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1431 report_len = hid_report_len(report); 1432 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1433 if (!buf) { 1434 hid_err(hdev, 1435 "failed to allocate buffer for report\n"); 1436 return false; 1437 } 1438 hid_hw_raw_request(hdev, report->id, buf, report_len, 1439 HID_FEATURE_REPORT, 1440 HID_REQ_GET_REPORT); 1441 kfree(buf); 1442 } 1443 1444 field->value[index] = td->inputmode_value; 1445 *inputmode_found = true; 1446 return true; 1447 1448 case HID_DG_CONTACTMAX: 1449 if (cls->maxcontacts) { 1450 max = min_t(int, field->logical_maximum, 1451 cls->maxcontacts); 1452 if (field->value[index] != max) { 1453 field->value[index] = max; 1454 return true; 1455 } 1456 } 1457 break; 1458 1459 case HID_DG_LATENCYMODE: 1460 field->value[index] = latency; 1461 return true; 1462 1463 case HID_DG_SURFACESWITCH: 1464 field->value[index] = surface_switch; 1465 return true; 1466 1467 case HID_DG_BUTTONSWITCH: 1468 field->value[index] = button_switch; 1469 return true; 1470 } 1471 1472 return false; /* no need to update the report */ 1473 } 1474 1475 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1476 bool surface_switch, bool button_switch) 1477 { 1478 struct hid_report_enum *rep_enum; 1479 struct hid_report *rep; 1480 struct hid_usage *usage; 1481 int i, j; 1482 bool update_report; 1483 bool inputmode_found = false; 1484 1485 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1486 list_for_each_entry(rep, &rep_enum->report_list, list) { 1487 update_report = false; 1488 1489 for (i = 0; i < rep->maxfield; i++) { 1490 /* Ignore if report count is out of bounds. */ 1491 if (rep->field[i]->report_count < 1) 1492 continue; 1493 1494 for (j = 0; j < rep->field[i]->maxusage; j++) { 1495 usage = &rep->field[i]->usage[j]; 1496 1497 if (mt_need_to_apply_feature(hdev, 1498 rep->field[i], 1499 usage, 1500 latency, 1501 surface_switch, 1502 button_switch, 1503 &inputmode_found)) 1504 update_report = true; 1505 } 1506 } 1507 1508 if (update_report) 1509 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1510 } 1511 } 1512 1513 static void mt_post_parse_default_settings(struct mt_device *td, 1514 struct mt_application *app) 1515 { 1516 __s32 quirks = app->quirks; 1517 1518 /* unknown serial device needs special quirks */ 1519 if (list_is_singular(&app->mt_usages)) { 1520 quirks |= MT_QUIRK_ALWAYS_VALID; 1521 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1522 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1523 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1524 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1525 } 1526 1527 app->quirks = quirks; 1528 } 1529 1530 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1531 { 1532 if (!app->have_contact_count) 1533 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1534 } 1535 1536 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1537 { 1538 struct mt_device *td = hid_get_drvdata(hdev); 1539 char *name; 1540 const char *suffix = NULL; 1541 struct mt_report_data *rdata; 1542 struct mt_application *mt_application = NULL; 1543 struct hid_report *report; 1544 int ret; 1545 1546 list_for_each_entry(report, &hi->reports, hidinput_list) { 1547 rdata = mt_find_report_data(td, report); 1548 if (!rdata) { 1549 hid_err(hdev, "failed to allocate data for report\n"); 1550 return -ENOMEM; 1551 } 1552 1553 mt_application = rdata->application; 1554 1555 if (rdata->is_mt_collection) { 1556 ret = mt_touch_input_configured(hdev, hi, 1557 mt_application); 1558 if (ret) 1559 return ret; 1560 } 1561 } 1562 1563 switch (hi->application) { 1564 case HID_GD_KEYBOARD: 1565 case HID_GD_KEYPAD: 1566 case HID_GD_MOUSE: 1567 case HID_DG_TOUCHPAD: 1568 case HID_GD_SYSTEM_CONTROL: 1569 case HID_CP_CONSUMER_CONTROL: 1570 case HID_GD_WIRELESS_RADIO_CTLS: 1571 case HID_GD_SYSTEM_MULTIAXIS: 1572 /* already handled by hid core */ 1573 break; 1574 case HID_DG_TOUCHSCREEN: 1575 /* we do not set suffix = "Touchscreen" */ 1576 hi->input->name = hdev->name; 1577 break; 1578 case HID_DG_STYLUS: 1579 /* force BTN_STYLUS to allow tablet matching in udev */ 1580 __set_bit(BTN_STYLUS, hi->input->keybit); 1581 break; 1582 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1583 suffix = "Custom Media Keys"; 1584 break; 1585 case HID_DG_PEN: 1586 suffix = "Stylus"; 1587 break; 1588 default: 1589 suffix = "UNKNOWN"; 1590 break; 1591 } 1592 1593 if (suffix) { 1594 name = devm_kzalloc(&hi->input->dev, 1595 strlen(hdev->name) + strlen(suffix) + 2, 1596 GFP_KERNEL); 1597 if (name) { 1598 sprintf(name, "%s %s", hdev->name, suffix); 1599 hi->input->name = name; 1600 } 1601 } 1602 1603 return 0; 1604 } 1605 1606 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1607 { 1608 if (field->usage[0].hid != usage || 1609 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1610 return; 1611 1612 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1613 field->flags |= HID_MAIN_ITEM_VARIABLE; 1614 } 1615 1616 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1617 { 1618 struct hid_report *report; 1619 int i; 1620 1621 list_for_each_entry(report, 1622 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1623 list) { 1624 1625 if (!report->maxfield) 1626 continue; 1627 1628 for (i = 0; i < report->maxfield; i++) 1629 if (report->field[i]->maxusage >= 1) 1630 mt_fix_const_field(report->field[i], usage); 1631 } 1632 } 1633 1634 static void mt_release_contacts(struct hid_device *hid) 1635 { 1636 struct hid_input *hidinput; 1637 struct mt_application *application; 1638 struct mt_device *td = hid_get_drvdata(hid); 1639 1640 list_for_each_entry(hidinput, &hid->inputs, list) { 1641 struct input_dev *input_dev = hidinput->input; 1642 struct input_mt *mt = input_dev->mt; 1643 int i; 1644 1645 if (mt) { 1646 for (i = 0; i < mt->num_slots; i++) { 1647 input_mt_slot(input_dev, i); 1648 input_mt_report_slot_inactive(input_dev); 1649 } 1650 input_mt_sync_frame(input_dev); 1651 input_sync(input_dev); 1652 } 1653 } 1654 1655 list_for_each_entry(application, &td->applications, list) { 1656 application->num_received = 0; 1657 } 1658 } 1659 1660 static void mt_expired_timeout(struct timer_list *t) 1661 { 1662 struct mt_device *td = from_timer(td, t, release_timer); 1663 struct hid_device *hdev = td->hdev; 1664 1665 /* 1666 * An input report came in just before we release the sticky fingers, 1667 * it will take care of the sticky fingers. 1668 */ 1669 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1670 return; 1671 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1672 mt_release_contacts(hdev); 1673 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1674 } 1675 1676 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1677 { 1678 int ret, i; 1679 struct mt_device *td; 1680 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1681 1682 for (i = 0; mt_classes[i].name ; i++) { 1683 if (id->driver_data == mt_classes[i].name) { 1684 mtclass = &(mt_classes[i]); 1685 break; 1686 } 1687 } 1688 1689 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1690 if (!td) { 1691 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1692 return -ENOMEM; 1693 } 1694 td->hdev = hdev; 1695 td->mtclass = *mtclass; 1696 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1697 hid_set_drvdata(hdev, td); 1698 1699 INIT_LIST_HEAD(&td->applications); 1700 INIT_LIST_HEAD(&td->reports); 1701 1702 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1703 td->serial_maybe = true; 1704 1705 /* This allows the driver to correctly support devices 1706 * that emit events over several HID messages. 1707 */ 1708 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1709 1710 /* 1711 * This allows the driver to handle different input sensors 1712 * that emits events through different applications on the same HID 1713 * device. 1714 */ 1715 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1716 1717 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1718 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1719 1720 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1721 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1722 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1723 } 1724 1725 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1726 1727 ret = hid_parse(hdev); 1728 if (ret != 0) 1729 return ret; 1730 1731 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1732 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1733 1734 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1735 if (ret) 1736 return ret; 1737 1738 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1739 if (ret) 1740 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1741 hdev->name); 1742 1743 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1744 1745 return 0; 1746 } 1747 1748 #ifdef CONFIG_PM 1749 static int mt_reset_resume(struct hid_device *hdev) 1750 { 1751 mt_release_contacts(hdev); 1752 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1753 return 0; 1754 } 1755 1756 static int mt_resume(struct hid_device *hdev) 1757 { 1758 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1759 * It should be safe to send it to other devices too. 1760 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1761 1762 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1763 1764 return 0; 1765 } 1766 #endif 1767 1768 static void mt_remove(struct hid_device *hdev) 1769 { 1770 struct mt_device *td = hid_get_drvdata(hdev); 1771 1772 del_timer_sync(&td->release_timer); 1773 1774 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1775 hid_hw_stop(hdev); 1776 } 1777 1778 /* 1779 * This list contains only: 1780 * - VID/PID of products not working with the default multitouch handling 1781 * - 2 generic rules. 1782 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1783 */ 1784 static const struct hid_device_id mt_devices[] = { 1785 1786 /* 3M panels */ 1787 { .driver_data = MT_CLS_3M, 1788 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1789 USB_DEVICE_ID_3M1968) }, 1790 { .driver_data = MT_CLS_3M, 1791 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1792 USB_DEVICE_ID_3M2256) }, 1793 { .driver_data = MT_CLS_3M, 1794 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1795 USB_DEVICE_ID_3M3266) }, 1796 1797 /* Anton devices */ 1798 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1799 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1800 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1801 1802 /* Asus T304UA */ 1803 { .driver_data = MT_CLS_ASUS, 1804 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1805 USB_VENDOR_ID_ASUSTEK, 1806 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1807 1808 /* Atmel panels */ 1809 { .driver_data = MT_CLS_SERIAL, 1810 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1811 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1812 1813 /* Baanto multitouch devices */ 1814 { .driver_data = MT_CLS_NSMU, 1815 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1816 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1817 1818 /* Cando panels */ 1819 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1820 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1821 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1822 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1823 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1824 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1825 1826 /* Chunghwa Telecom touch panels */ 1827 { .driver_data = MT_CLS_NSMU, 1828 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1829 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1830 1831 /* CJTouch panels */ 1832 { .driver_data = MT_CLS_NSMU, 1833 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1834 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1835 { .driver_data = MT_CLS_NSMU, 1836 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1837 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1838 1839 /* CVTouch panels */ 1840 { .driver_data = MT_CLS_NSMU, 1841 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1842 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1843 1844 /* eGalax devices (resistive) */ 1845 { .driver_data = MT_CLS_EGALAX, 1846 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1847 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1848 { .driver_data = MT_CLS_EGALAX, 1849 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1850 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1851 1852 /* eGalax devices (capacitive) */ 1853 { .driver_data = MT_CLS_EGALAX_SERIAL, 1854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1856 { .driver_data = MT_CLS_EGALAX, 1857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1859 { .driver_data = MT_CLS_EGALAX_SERIAL, 1860 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1862 { .driver_data = MT_CLS_EGALAX_SERIAL, 1863 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1864 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1865 { .driver_data = MT_CLS_EGALAX_SERIAL, 1866 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1867 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1868 { .driver_data = MT_CLS_EGALAX_SERIAL, 1869 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1870 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1871 { .driver_data = MT_CLS_EGALAX, 1872 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1873 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1874 { .driver_data = MT_CLS_EGALAX, 1875 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1876 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1877 { .driver_data = MT_CLS_EGALAX_SERIAL, 1878 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1880 { .driver_data = MT_CLS_EGALAX, 1881 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1882 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1883 { .driver_data = MT_CLS_EGALAX, 1884 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1885 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1886 { .driver_data = MT_CLS_EGALAX, 1887 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1888 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1889 { .driver_data = MT_CLS_EGALAX, 1890 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1891 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1892 { .driver_data = MT_CLS_EGALAX_SERIAL, 1893 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1894 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1895 { .driver_data = MT_CLS_EGALAX_SERIAL, 1896 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1897 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1898 { .driver_data = MT_CLS_EGALAX_SERIAL, 1899 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1900 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1901 { .driver_data = MT_CLS_EGALAX, 1902 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1903 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 1904 1905 /* Elan devices */ 1906 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1907 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1908 USB_VENDOR_ID_ELAN, 0x313a) }, 1909 1910 /* Elitegroup panel */ 1911 { .driver_data = MT_CLS_SERIAL, 1912 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1913 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1914 1915 /* Flatfrog Panels */ 1916 { .driver_data = MT_CLS_FLATFROG, 1917 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1918 USB_DEVICE_ID_MULTITOUCH_3200) }, 1919 1920 /* FocalTech Panels */ 1921 { .driver_data = MT_CLS_SERIAL, 1922 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1923 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1924 1925 /* GeneralTouch panel */ 1926 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1927 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1928 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1929 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1930 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1931 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1932 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1933 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1934 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1935 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1936 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1937 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1938 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1939 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1940 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1941 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1942 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1943 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1944 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1945 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1946 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1947 1948 /* Gametel game controller */ 1949 { .driver_data = MT_CLS_NSMU, 1950 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1951 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1952 1953 /* GoodTouch panels */ 1954 { .driver_data = MT_CLS_NSMU, 1955 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1956 USB_DEVICE_ID_GOODTOUCH_000f) }, 1957 1958 /* Hanvon panels */ 1959 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1960 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1961 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1962 1963 /* Ilitek dual touch panel */ 1964 { .driver_data = MT_CLS_NSMU, 1965 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1966 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1967 1968 /* LG Melfas panel */ 1969 { .driver_data = MT_CLS_LG, 1970 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1971 USB_DEVICE_ID_LG_MELFAS_MT) }, 1972 { .driver_data = MT_CLS_LG, 1973 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 1974 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 1975 1976 /* Lenovo X1 TAB Gen 2 */ 1977 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1978 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1979 USB_VENDOR_ID_LENOVO, 1980 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1981 1982 /* Lenovo X1 TAB Gen 3 */ 1983 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1984 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1985 USB_VENDOR_ID_LENOVO, 1986 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 1987 1988 /* MosArt panels */ 1989 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1990 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1991 USB_DEVICE_ID_ASUS_T91MT)}, 1992 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1993 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1994 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1995 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1996 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1997 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1998 1999 /* Novatek Panel */ 2000 { .driver_data = MT_CLS_NSMU, 2001 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2002 USB_DEVICE_ID_NOVATEK_PCT) }, 2003 2004 /* Ntrig Panel */ 2005 { .driver_data = MT_CLS_NSMU, 2006 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2007 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2008 2009 /* Panasonic panels */ 2010 { .driver_data = MT_CLS_PANASONIC, 2011 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2012 USB_DEVICE_ID_PANABOARD_UBT780) }, 2013 { .driver_data = MT_CLS_PANASONIC, 2014 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2015 USB_DEVICE_ID_PANABOARD_UBT880) }, 2016 2017 /* PixArt optical touch screen */ 2018 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2019 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2020 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2021 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2022 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2023 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2024 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2025 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2026 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2027 2028 /* PixCir-based panels */ 2029 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2030 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2031 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2032 2033 /* Quanta-based panels */ 2034 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2035 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2036 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2037 2038 /* Razer touchpads */ 2039 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2040 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2041 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2042 2043 /* Smart Tech panels */ 2044 { .driver_data = MT_CLS_SMART_TECH, 2045 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2046 2047 /* Stantum panels */ 2048 { .driver_data = MT_CLS_CONFIDENCE, 2049 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2050 USB_DEVICE_ID_MTP_STM)}, 2051 2052 /* Synaptics devices */ 2053 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2054 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2055 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2056 2057 /* TopSeed panels */ 2058 { .driver_data = MT_CLS_TOPSEED, 2059 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2060 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2061 2062 /* Touch International panels */ 2063 { .driver_data = MT_CLS_NSMU, 2064 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2065 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2066 2067 /* Unitec panels */ 2068 { .driver_data = MT_CLS_NSMU, 2069 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2070 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2071 { .driver_data = MT_CLS_NSMU, 2072 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2073 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2074 2075 /* VTL panels */ 2076 { .driver_data = MT_CLS_VTL, 2077 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2078 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2079 2080 /* Wistron panels */ 2081 { .driver_data = MT_CLS_NSMU, 2082 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2083 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2084 2085 /* XAT */ 2086 { .driver_data = MT_CLS_NSMU, 2087 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2088 USB_DEVICE_ID_XAT_CSR) }, 2089 2090 /* Xiroku */ 2091 { .driver_data = MT_CLS_NSMU, 2092 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2093 USB_DEVICE_ID_XIROKU_SPX) }, 2094 { .driver_data = MT_CLS_NSMU, 2095 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2096 USB_DEVICE_ID_XIROKU_MPX) }, 2097 { .driver_data = MT_CLS_NSMU, 2098 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2099 USB_DEVICE_ID_XIROKU_CSR) }, 2100 { .driver_data = MT_CLS_NSMU, 2101 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2102 USB_DEVICE_ID_XIROKU_SPX1) }, 2103 { .driver_data = MT_CLS_NSMU, 2104 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2105 USB_DEVICE_ID_XIROKU_MPX1) }, 2106 { .driver_data = MT_CLS_NSMU, 2107 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2108 USB_DEVICE_ID_XIROKU_CSR1) }, 2109 { .driver_data = MT_CLS_NSMU, 2110 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2111 USB_DEVICE_ID_XIROKU_SPX2) }, 2112 { .driver_data = MT_CLS_NSMU, 2113 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2114 USB_DEVICE_ID_XIROKU_MPX2) }, 2115 { .driver_data = MT_CLS_NSMU, 2116 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2117 USB_DEVICE_ID_XIROKU_CSR2) }, 2118 2119 /* Google MT devices */ 2120 { .driver_data = MT_CLS_GOOGLE, 2121 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2122 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2123 2124 /* Generic MT device */ 2125 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2126 2127 /* Generic Win 8 certified MT device */ 2128 { .driver_data = MT_CLS_WIN_8, 2129 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2130 HID_ANY_ID, HID_ANY_ID) }, 2131 { } 2132 }; 2133 MODULE_DEVICE_TABLE(hid, mt_devices); 2134 2135 static const struct hid_usage_id mt_grabbed_usages[] = { 2136 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2137 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2138 }; 2139 2140 static struct hid_driver mt_driver = { 2141 .name = "hid-multitouch", 2142 .id_table = mt_devices, 2143 .probe = mt_probe, 2144 .remove = mt_remove, 2145 .input_mapping = mt_input_mapping, 2146 .input_mapped = mt_input_mapped, 2147 .input_configured = mt_input_configured, 2148 .feature_mapping = mt_feature_mapping, 2149 .usage_table = mt_grabbed_usages, 2150 .event = mt_event, 2151 .report = mt_report, 2152 #ifdef CONFIG_PM 2153 .reset_resume = mt_reset_resume, 2154 .resume = mt_resume, 2155 #endif 2156 }; 2157 module_hid_driver(mt_driver); 2158