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 73 #define MT_INPUTMODE_TOUCHSCREEN 0x02 74 #define MT_INPUTMODE_TOUCHPAD 0x03 75 76 #define MT_BUTTONTYPE_CLICKPAD 0 77 78 enum latency_mode { 79 HID_LATENCY_NORMAL = 0, 80 HID_LATENCY_HIGH = 1, 81 }; 82 83 #define MT_IO_FLAGS_RUNNING 0 84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 85 #define MT_IO_FLAGS_PENDING_SLOTS 2 86 87 static const bool mtrue = true; /* default for true */ 88 static const bool mfalse; /* default for false */ 89 static const __s32 mzero; /* default for 0 */ 90 91 #define DEFAULT_TRUE ((void *)&mtrue) 92 #define DEFAULT_FALSE ((void *)&mfalse) 93 #define DEFAULT_ZERO ((void *)&mzero) 94 95 struct mt_usages { 96 struct list_head list; 97 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 98 __s32 *contactid; /* the device ContactID assigned to this slot */ 99 bool *tip_state; /* is the touch valid? */ 100 bool *inrange_state; /* is the finger in proximity of the sensor? */ 101 bool *confidence_state; /* is the touch made by a finger? */ 102 }; 103 104 struct mt_application { 105 struct list_head list; 106 unsigned int application; 107 unsigned int report_id; 108 struct list_head mt_usages; /* mt usages list */ 109 110 __s32 quirks; 111 112 __s32 *scantime; /* scantime reported */ 113 __s32 scantime_logical_max; /* max value for raw scantime */ 114 115 __s32 *raw_cc; /* contact count in the report */ 116 int left_button_state; /* left button state */ 117 unsigned int mt_flags; /* flags to pass to input-mt */ 118 119 unsigned long *pending_palm_slots; /* slots where we reported palm 120 * and need to release */ 121 122 __u8 num_received; /* how many contacts we received */ 123 __u8 num_expected; /* expected last contact index */ 124 __u8 buttons_count; /* number of physical buttons per touchpad */ 125 __u8 touches_by_report; /* how many touches are present in one report: 126 * 1 means we should use a serial protocol 127 * > 1 means hybrid (multitouch) protocol 128 */ 129 130 __s32 dev_time; /* the scan time provided by the device */ 131 unsigned long jiffies; /* the frame's jiffies */ 132 int timestamp; /* the timestamp to be sent */ 133 int prev_scantime; /* scantime reported previously */ 134 135 bool have_contact_count; 136 }; 137 138 struct mt_class { 139 __s32 name; /* MT_CLS */ 140 __s32 quirks; 141 __s32 sn_move; /* Signal/noise ratio for move events */ 142 __s32 sn_width; /* Signal/noise ratio for width events */ 143 __s32 sn_height; /* Signal/noise ratio for height events */ 144 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 145 __u8 maxcontacts; 146 bool is_indirect; /* true for touchpads */ 147 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 148 }; 149 150 struct mt_report_data { 151 struct list_head list; 152 struct hid_report *report; 153 struct mt_application *application; 154 bool is_mt_collection; 155 }; 156 157 struct mt_device { 158 struct mt_class mtclass; /* our mt device class */ 159 struct timer_list release_timer; /* to release sticky fingers */ 160 struct hid_device *hdev; /* hid_device we're attached to */ 161 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 162 __u8 inputmode_value; /* InputMode HID feature value */ 163 __u8 maxcontacts; 164 bool is_buttonpad; /* is this device a button pad? */ 165 bool serial_maybe; /* need to check for serial protocol */ 166 167 struct list_head applications; 168 struct list_head reports; 169 }; 170 171 static void mt_post_parse_default_settings(struct mt_device *td, 172 struct mt_application *app); 173 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 174 175 /* classes of device behavior */ 176 #define MT_CLS_DEFAULT 0x0001 177 178 #define MT_CLS_SERIAL 0x0002 179 #define MT_CLS_CONFIDENCE 0x0003 180 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 181 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 182 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 183 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 184 /* reserved 0x0008 */ 185 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 186 #define MT_CLS_NSMU 0x000a 187 /* reserved 0x0010 */ 188 /* reserved 0x0011 */ 189 #define MT_CLS_WIN_8 0x0012 190 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 191 #define MT_CLS_WIN_8_DUAL 0x0014 192 193 /* vendor specific classes */ 194 #define MT_CLS_3M 0x0101 195 /* reserved 0x0102 */ 196 #define MT_CLS_EGALAX 0x0103 197 #define MT_CLS_EGALAX_SERIAL 0x0104 198 #define MT_CLS_TOPSEED 0x0105 199 #define MT_CLS_PANASONIC 0x0106 200 #define MT_CLS_FLATFROG 0x0107 201 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 202 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 203 #define MT_CLS_LG 0x010a 204 #define MT_CLS_ASUS 0x010b 205 #define MT_CLS_VTL 0x0110 206 #define MT_CLS_GOOGLE 0x0111 207 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 208 #define MT_CLS_SMART_TECH 0x0113 209 210 #define MT_DEFAULT_MAXCONTACT 10 211 #define MT_MAX_MAXCONTACT 250 212 213 /* 214 * Resync device and local timestamps after that many microseconds without 215 * receiving data. 216 */ 217 #define MAX_TIMESTAMP_INTERVAL 1000000 218 219 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 220 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 221 222 /* 223 * these device-dependent functions determine what slot corresponds 224 * to a valid contact that was just read. 225 */ 226 227 static int cypress_compute_slot(struct mt_application *application, 228 struct mt_usages *slot) 229 { 230 if (*slot->contactid != 0 || application->num_received == 0) 231 return *slot->contactid; 232 else 233 return -1; 234 } 235 236 static const struct mt_class mt_classes[] = { 237 { .name = MT_CLS_DEFAULT, 238 .quirks = MT_QUIRK_ALWAYS_VALID | 239 MT_QUIRK_CONTACT_CNT_ACCURATE }, 240 { .name = MT_CLS_NSMU, 241 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 242 { .name = MT_CLS_SERIAL, 243 .quirks = MT_QUIRK_ALWAYS_VALID}, 244 { .name = MT_CLS_CONFIDENCE, 245 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 246 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 248 MT_QUIRK_SLOT_IS_CONTACTID }, 249 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 250 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 251 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 252 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 253 .quirks = MT_QUIRK_VALID_IS_INRANGE | 254 MT_QUIRK_SLOT_IS_CONTACTID, 255 .maxcontacts = 2 }, 256 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 257 .quirks = MT_QUIRK_VALID_IS_INRANGE | 258 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 259 .maxcontacts = 2 }, 260 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 261 .quirks = MT_QUIRK_VALID_IS_INRANGE | 262 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 263 { .name = MT_CLS_WIN_8, 264 .quirks = MT_QUIRK_ALWAYS_VALID | 265 MT_QUIRK_IGNORE_DUPLICATES | 266 MT_QUIRK_HOVERING | 267 MT_QUIRK_CONTACT_CNT_ACCURATE | 268 MT_QUIRK_STICKY_FINGERS | 269 MT_QUIRK_WIN8_PTP_BUTTONS, 270 .export_all_inputs = true }, 271 { .name = MT_CLS_EXPORT_ALL_INPUTS, 272 .quirks = MT_QUIRK_ALWAYS_VALID | 273 MT_QUIRK_CONTACT_CNT_ACCURATE, 274 .export_all_inputs = true }, 275 { .name = MT_CLS_WIN_8_DUAL, 276 .quirks = MT_QUIRK_ALWAYS_VALID | 277 MT_QUIRK_IGNORE_DUPLICATES | 278 MT_QUIRK_HOVERING | 279 MT_QUIRK_CONTACT_CNT_ACCURATE | 280 MT_QUIRK_WIN8_PTP_BUTTONS, 281 .export_all_inputs = true }, 282 283 /* 284 * vendor specific classes 285 */ 286 { .name = MT_CLS_3M, 287 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 288 MT_QUIRK_SLOT_IS_CONTACTID | 289 MT_QUIRK_TOUCH_SIZE_SCALING, 290 .sn_move = 2048, 291 .sn_width = 128, 292 .sn_height = 128, 293 .maxcontacts = 60, 294 }, 295 { .name = MT_CLS_EGALAX, 296 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 297 MT_QUIRK_VALID_IS_INRANGE, 298 .sn_move = 4096, 299 .sn_pressure = 32, 300 }, 301 { .name = MT_CLS_EGALAX_SERIAL, 302 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 303 MT_QUIRK_ALWAYS_VALID, 304 .sn_move = 4096, 305 .sn_pressure = 32, 306 }, 307 { .name = MT_CLS_TOPSEED, 308 .quirks = MT_QUIRK_ALWAYS_VALID, 309 .is_indirect = true, 310 .maxcontacts = 2, 311 }, 312 { .name = MT_CLS_PANASONIC, 313 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 314 .maxcontacts = 4 }, 315 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 316 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 317 MT_QUIRK_VALID_IS_INRANGE | 318 MT_QUIRK_SLOT_IS_CONTACTID, 319 .maxcontacts = 2 320 }, 321 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 322 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 323 MT_QUIRK_SLOT_IS_CONTACTID 324 }, 325 326 { .name = MT_CLS_FLATFROG, 327 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 328 MT_QUIRK_NO_AREA, 329 .sn_move = 2048, 330 .maxcontacts = 40, 331 }, 332 { .name = MT_CLS_LG, 333 .quirks = MT_QUIRK_ALWAYS_VALID | 334 MT_QUIRK_FIX_CONST_CONTACT_ID | 335 MT_QUIRK_IGNORE_DUPLICATES | 336 MT_QUIRK_HOVERING | 337 MT_QUIRK_CONTACT_CNT_ACCURATE }, 338 { .name = MT_CLS_ASUS, 339 .quirks = MT_QUIRK_ALWAYS_VALID | 340 MT_QUIRK_CONTACT_CNT_ACCURATE | 341 MT_QUIRK_ASUS_CUSTOM_UP }, 342 { .name = MT_CLS_VTL, 343 .quirks = MT_QUIRK_ALWAYS_VALID | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_FORCE_GET_FEATURE, 346 }, 347 { .name = MT_CLS_GOOGLE, 348 .quirks = MT_QUIRK_ALWAYS_VALID | 349 MT_QUIRK_CONTACT_CNT_ACCURATE | 350 MT_QUIRK_SLOT_IS_CONTACTID | 351 MT_QUIRK_HOVERING 352 }, 353 { .name = MT_CLS_RAZER_BLADE_STEALTH, 354 .quirks = MT_QUIRK_ALWAYS_VALID | 355 MT_QUIRK_IGNORE_DUPLICATES | 356 MT_QUIRK_HOVERING | 357 MT_QUIRK_CONTACT_CNT_ACCURATE | 358 MT_QUIRK_WIN8_PTP_BUTTONS, 359 }, 360 { .name = MT_CLS_SMART_TECH, 361 .quirks = MT_QUIRK_ALWAYS_VALID | 362 MT_QUIRK_IGNORE_DUPLICATES | 363 MT_QUIRK_CONTACT_CNT_ACCURATE | 364 MT_QUIRK_SEPARATE_APP_REPORT, 365 }, 366 { } 367 }; 368 369 static ssize_t mt_show_quirks(struct device *dev, 370 struct device_attribute *attr, 371 char *buf) 372 { 373 struct hid_device *hdev = to_hid_device(dev); 374 struct mt_device *td = hid_get_drvdata(hdev); 375 376 return sprintf(buf, "%u\n", td->mtclass.quirks); 377 } 378 379 static ssize_t mt_set_quirks(struct device *dev, 380 struct device_attribute *attr, 381 const char *buf, size_t count) 382 { 383 struct hid_device *hdev = to_hid_device(dev); 384 struct mt_device *td = hid_get_drvdata(hdev); 385 struct mt_application *application; 386 387 unsigned long val; 388 389 if (kstrtoul(buf, 0, &val)) 390 return -EINVAL; 391 392 td->mtclass.quirks = val; 393 394 list_for_each_entry(application, &td->applications, list) { 395 application->quirks = val; 396 if (!application->have_contact_count) 397 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 398 } 399 400 return count; 401 } 402 403 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 404 405 static struct attribute *sysfs_attrs[] = { 406 &dev_attr_quirks.attr, 407 NULL 408 }; 409 410 static const struct attribute_group mt_attribute_group = { 411 .attrs = sysfs_attrs 412 }; 413 414 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 415 { 416 int ret; 417 u32 size = hid_report_len(report); 418 u8 *buf; 419 420 /* 421 * Do not fetch the feature report if the device has been explicitly 422 * marked as non-capable. 423 */ 424 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 425 return; 426 427 buf = hid_alloc_report_buf(report, GFP_KERNEL); 428 if (!buf) 429 return; 430 431 ret = hid_hw_raw_request(hdev, report->id, buf, size, 432 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 433 if (ret < 0) { 434 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 435 report->id); 436 } else { 437 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 438 size, 0); 439 if (ret) 440 dev_warn(&hdev->dev, "failed to report feature\n"); 441 } 442 443 kfree(buf); 444 } 445 446 static void mt_feature_mapping(struct hid_device *hdev, 447 struct hid_field *field, struct hid_usage *usage) 448 { 449 struct mt_device *td = hid_get_drvdata(hdev); 450 451 switch (usage->hid) { 452 case HID_DG_CONTACTMAX: 453 mt_get_feature(hdev, field->report); 454 455 td->maxcontacts = field->value[0]; 456 if (!td->maxcontacts && 457 field->logical_maximum <= MT_MAX_MAXCONTACT) 458 td->maxcontacts = field->logical_maximum; 459 if (td->mtclass.maxcontacts) 460 /* check if the maxcontacts is given by the class */ 461 td->maxcontacts = td->mtclass.maxcontacts; 462 463 break; 464 case HID_DG_BUTTONTYPE: 465 if (usage->usage_index >= field->report_count) { 466 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 467 break; 468 } 469 470 mt_get_feature(hdev, field->report); 471 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 472 td->is_buttonpad = true; 473 474 break; 475 case 0xff0000c5: 476 /* Retrieve the Win8 blob once to enable some devices */ 477 if (usage->usage_index == 0) 478 mt_get_feature(hdev, field->report); 479 break; 480 } 481 } 482 483 static void set_abs(struct input_dev *input, unsigned int code, 484 struct hid_field *field, int snratio) 485 { 486 int fmin = field->logical_minimum; 487 int fmax = field->logical_maximum; 488 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 489 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 490 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 491 } 492 493 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 494 struct mt_application *application) 495 { 496 struct mt_usages *usage; 497 498 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 499 if (!usage) 500 return NULL; 501 502 /* set some defaults so we do not need to check for null pointers */ 503 usage->x = DEFAULT_ZERO; 504 usage->y = DEFAULT_ZERO; 505 usage->cx = DEFAULT_ZERO; 506 usage->cy = DEFAULT_ZERO; 507 usage->p = DEFAULT_ZERO; 508 usage->w = DEFAULT_ZERO; 509 usage->h = DEFAULT_ZERO; 510 usage->a = DEFAULT_ZERO; 511 usage->contactid = DEFAULT_ZERO; 512 usage->tip_state = DEFAULT_FALSE; 513 usage->inrange_state = DEFAULT_FALSE; 514 usage->confidence_state = DEFAULT_TRUE; 515 516 list_add_tail(&usage->list, &application->mt_usages); 517 518 return usage; 519 } 520 521 static struct mt_application *mt_allocate_application(struct mt_device *td, 522 struct hid_report *report) 523 { 524 unsigned int application = report->application; 525 struct mt_application *mt_application; 526 527 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 528 GFP_KERNEL); 529 if (!mt_application) 530 return NULL; 531 532 mt_application->application = application; 533 INIT_LIST_HEAD(&mt_application->mt_usages); 534 535 if (application == HID_DG_TOUCHSCREEN) 536 mt_application->mt_flags |= INPUT_MT_DIRECT; 537 538 /* 539 * Model touchscreens providing buttons as touchpads. 540 */ 541 if (application == HID_DG_TOUCHPAD) { 542 mt_application->mt_flags |= INPUT_MT_POINTER; 543 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 544 } 545 546 mt_application->scantime = DEFAULT_ZERO; 547 mt_application->raw_cc = DEFAULT_ZERO; 548 mt_application->quirks = td->mtclass.quirks; 549 mt_application->report_id = report->id; 550 551 list_add_tail(&mt_application->list, &td->applications); 552 553 return mt_application; 554 } 555 556 static struct mt_application *mt_find_application(struct mt_device *td, 557 struct hid_report *report) 558 { 559 unsigned int application = report->application; 560 struct mt_application *tmp, *mt_application = NULL; 561 562 list_for_each_entry(tmp, &td->applications, list) { 563 if (application == tmp->application) { 564 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 565 tmp->report_id == report->id) { 566 mt_application = tmp; 567 break; 568 } 569 } 570 } 571 572 if (!mt_application) 573 mt_application = mt_allocate_application(td, report); 574 575 return mt_application; 576 } 577 578 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 579 struct hid_report *report) 580 { 581 struct mt_report_data *rdata; 582 struct hid_field *field; 583 int r, n; 584 585 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 586 if (!rdata) 587 return NULL; 588 589 rdata->report = report; 590 rdata->application = mt_find_application(td, report); 591 592 if (!rdata->application) { 593 devm_kfree(&td->hdev->dev, rdata); 594 return NULL; 595 } 596 597 for (r = 0; r < report->maxfield; r++) { 598 field = report->field[r]; 599 600 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 601 continue; 602 603 for (n = 0; n < field->report_count; n++) { 604 if (field->usage[n].hid == HID_DG_CONTACTID) 605 rdata->is_mt_collection = true; 606 } 607 } 608 609 list_add_tail(&rdata->list, &td->reports); 610 611 return rdata; 612 } 613 614 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 615 struct hid_report *report) 616 { 617 struct mt_report_data *tmp, *rdata = NULL; 618 619 list_for_each_entry(tmp, &td->reports, list) { 620 if (report == tmp->report) { 621 rdata = tmp; 622 break; 623 } 624 } 625 626 if (!rdata) 627 rdata = mt_allocate_report_data(td, report); 628 629 return rdata; 630 } 631 632 static void mt_store_field(struct hid_device *hdev, 633 struct mt_application *application, 634 __s32 *value, 635 size_t offset) 636 { 637 struct mt_usages *usage; 638 __s32 **target; 639 640 if (list_empty(&application->mt_usages)) 641 usage = mt_allocate_usage(hdev, application); 642 else 643 usage = list_last_entry(&application->mt_usages, 644 struct mt_usages, 645 list); 646 647 if (!usage) 648 return; 649 650 target = (__s32 **)((char *)usage + offset); 651 652 /* the value has already been filled, create a new slot */ 653 if (*target != DEFAULT_TRUE && 654 *target != DEFAULT_FALSE && 655 *target != DEFAULT_ZERO) { 656 if (usage->contactid == DEFAULT_ZERO || 657 usage->x == DEFAULT_ZERO || 658 usage->y == DEFAULT_ZERO) { 659 hid_dbg(hdev, 660 "ignoring duplicate usage on incomplete"); 661 return; 662 } 663 usage = mt_allocate_usage(hdev, application); 664 if (!usage) 665 return; 666 667 target = (__s32 **)((char *)usage + offset); 668 } 669 670 *target = value; 671 } 672 673 #define MT_STORE_FIELD(__name) \ 674 mt_store_field(hdev, app, \ 675 &field->value[usage->usage_index], \ 676 offsetof(struct mt_usages, __name)) 677 678 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 679 struct hid_field *field, struct hid_usage *usage, 680 unsigned long **bit, int *max, struct mt_application *app) 681 { 682 struct mt_device *td = hid_get_drvdata(hdev); 683 struct mt_class *cls = &td->mtclass; 684 int code; 685 struct hid_usage *prev_usage = NULL; 686 687 /* 688 * Model touchscreens providing buttons as touchpads. 689 */ 690 if (field->application == HID_DG_TOUCHSCREEN && 691 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 692 app->mt_flags |= INPUT_MT_POINTER; 693 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 694 } 695 696 /* count the buttons on touchpads */ 697 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 698 app->buttons_count++; 699 700 if (usage->usage_index) 701 prev_usage = &field->usage[usage->usage_index - 1]; 702 703 switch (usage->hid & HID_USAGE_PAGE) { 704 705 case HID_UP_GENDESK: 706 switch (usage->hid) { 707 case HID_GD_X: 708 if (prev_usage && (prev_usage->hid == usage->hid)) { 709 code = ABS_MT_TOOL_X; 710 MT_STORE_FIELD(cx); 711 } else { 712 code = ABS_MT_POSITION_X; 713 MT_STORE_FIELD(x); 714 } 715 716 set_abs(hi->input, code, field, cls->sn_move); 717 718 /* 719 * A system multi-axis that exports X and Y has a high 720 * chance of being used directly on a surface 721 */ 722 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 723 __set_bit(INPUT_PROP_DIRECT, 724 hi->input->propbit); 725 input_set_abs_params(hi->input, 726 ABS_MT_TOOL_TYPE, 727 MT_TOOL_DIAL, 728 MT_TOOL_DIAL, 0, 0); 729 } 730 731 return 1; 732 case HID_GD_Y: 733 if (prev_usage && (prev_usage->hid == usage->hid)) { 734 code = ABS_MT_TOOL_Y; 735 MT_STORE_FIELD(cy); 736 } else { 737 code = ABS_MT_POSITION_Y; 738 MT_STORE_FIELD(y); 739 } 740 741 set_abs(hi->input, code, field, cls->sn_move); 742 743 return 1; 744 } 745 return 0; 746 747 case HID_UP_DIGITIZER: 748 switch (usage->hid) { 749 case HID_DG_INRANGE: 750 if (app->quirks & MT_QUIRK_HOVERING) { 751 input_set_abs_params(hi->input, 752 ABS_MT_DISTANCE, 0, 1, 0, 0); 753 } 754 MT_STORE_FIELD(inrange_state); 755 return 1; 756 case HID_DG_CONFIDENCE: 757 if ((cls->name == MT_CLS_WIN_8 || 758 cls->name == MT_CLS_WIN_8_DUAL) && 759 (field->application == HID_DG_TOUCHPAD || 760 field->application == HID_DG_TOUCHSCREEN)) 761 app->quirks |= MT_QUIRK_CONFIDENCE; 762 763 if (app->quirks & MT_QUIRK_CONFIDENCE) 764 input_set_abs_params(hi->input, 765 ABS_MT_TOOL_TYPE, 766 MT_TOOL_FINGER, 767 MT_TOOL_PALM, 0, 0); 768 769 MT_STORE_FIELD(confidence_state); 770 return 1; 771 case HID_DG_TIPSWITCH: 772 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 773 input_set_capability(hi->input, 774 EV_KEY, BTN_TOUCH); 775 MT_STORE_FIELD(tip_state); 776 return 1; 777 case HID_DG_CONTACTID: 778 MT_STORE_FIELD(contactid); 779 app->touches_by_report++; 780 return 1; 781 case HID_DG_WIDTH: 782 if (!(app->quirks & MT_QUIRK_NO_AREA)) 783 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 784 cls->sn_width); 785 MT_STORE_FIELD(w); 786 return 1; 787 case HID_DG_HEIGHT: 788 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 789 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 790 cls->sn_height); 791 792 /* 793 * Only set ABS_MT_ORIENTATION if it is not 794 * already set by the HID_DG_AZIMUTH usage. 795 */ 796 if (!test_bit(ABS_MT_ORIENTATION, 797 hi->input->absbit)) 798 input_set_abs_params(hi->input, 799 ABS_MT_ORIENTATION, 0, 1, 0, 0); 800 } 801 MT_STORE_FIELD(h); 802 return 1; 803 case HID_DG_TIPPRESSURE: 804 set_abs(hi->input, ABS_MT_PRESSURE, field, 805 cls->sn_pressure); 806 MT_STORE_FIELD(p); 807 return 1; 808 case HID_DG_SCANTIME: 809 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 810 app->scantime = &field->value[usage->usage_index]; 811 app->scantime_logical_max = field->logical_maximum; 812 return 1; 813 case HID_DG_CONTACTCOUNT: 814 app->have_contact_count = true; 815 app->raw_cc = &field->value[usage->usage_index]; 816 return 1; 817 case HID_DG_AZIMUTH: 818 /* 819 * Azimuth has the range of [0, MAX) representing a full 820 * revolution. Set ABS_MT_ORIENTATION to a quarter of 821 * MAX according the definition of ABS_MT_ORIENTATION 822 */ 823 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 824 -field->logical_maximum / 4, 825 field->logical_maximum / 4, 826 cls->sn_move ? 827 field->logical_maximum / cls->sn_move : 0, 0); 828 MT_STORE_FIELD(a); 829 return 1; 830 case HID_DG_CONTACTMAX: 831 /* contact max are global to the report */ 832 return -1; 833 case HID_DG_TOUCH: 834 /* Legacy devices use TIPSWITCH and not TOUCH. 835 * Let's just ignore this field. */ 836 return -1; 837 } 838 /* let hid-input decide for the others */ 839 return 0; 840 841 case HID_UP_BUTTON: 842 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 843 /* 844 * MS PTP spec says that external buttons left and right have 845 * usages 2 and 3. 846 */ 847 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 848 field->application == HID_DG_TOUCHPAD && 849 (usage->hid & HID_USAGE) > 1) 850 code--; 851 852 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 853 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 854 855 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 856 input_set_capability(hi->input, EV_KEY, code); 857 return 1; 858 859 case 0xff000000: 860 /* we do not want to map these: no input-oriented meaning */ 861 return -1; 862 } 863 864 return 0; 865 } 866 867 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 868 struct mt_usages *slot, 869 struct input_dev *input) 870 { 871 __s32 quirks = app->quirks; 872 873 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 874 return *slot->contactid; 875 876 if (quirks & MT_QUIRK_CYPRESS) 877 return cypress_compute_slot(app, slot); 878 879 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 880 return app->num_received; 881 882 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 883 return *slot->contactid - 1; 884 885 return input_mt_get_slot_by_key(input, *slot->contactid); 886 } 887 888 static void mt_release_pending_palms(struct mt_device *td, 889 struct mt_application *app, 890 struct input_dev *input) 891 { 892 int slotnum; 893 bool need_sync = false; 894 895 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 896 clear_bit(slotnum, app->pending_palm_slots); 897 898 input_mt_slot(input, slotnum); 899 input_mt_report_slot_state(input, MT_TOOL_PALM, false); 900 901 need_sync = true; 902 } 903 904 if (need_sync) { 905 input_mt_sync_frame(input); 906 input_sync(input); 907 } 908 } 909 910 /* 911 * this function is called when a whole packet has been received and processed, 912 * so that it can decide what to send to the input layer. 913 */ 914 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 915 struct input_dev *input) 916 { 917 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 918 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 919 920 input_mt_sync_frame(input); 921 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 922 input_sync(input); 923 924 mt_release_pending_palms(td, app, input); 925 926 app->num_received = 0; 927 app->left_button_state = 0; 928 929 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 930 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 931 else 932 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 933 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 934 } 935 936 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 937 { 938 long delta = value - app->prev_scantime; 939 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 940 941 app->jiffies = jiffies; 942 943 if (delta < 0) 944 delta += app->scantime_logical_max; 945 946 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 947 delta *= 100; 948 949 if (jdelta > MAX_TIMESTAMP_INTERVAL) 950 /* No data received for a while, resync the timestamp. */ 951 return 0; 952 else 953 return app->timestamp + delta; 954 } 955 956 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 957 struct hid_usage *usage, __s32 value) 958 { 959 /* we will handle the hidinput part later, now remains hiddev */ 960 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 961 hid->hiddev_hid_event(hid, field, usage, value); 962 963 return 1; 964 } 965 966 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 967 struct mt_application *app, 968 struct mt_usages *slot) 969 { 970 struct input_mt *mt = input->mt; 971 __s32 quirks = app->quirks; 972 bool valid = true; 973 bool confidence_state = true; 974 bool inrange_state = false; 975 int active; 976 int slotnum; 977 int tool = MT_TOOL_FINGER; 978 979 if (!slot) 980 return -EINVAL; 981 982 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 983 app->num_received >= app->num_expected) 984 return -EAGAIN; 985 986 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 987 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 988 valid = *slot->inrange_state; 989 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 990 valid = *slot->tip_state; 991 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 992 valid = *slot->confidence_state; 993 994 if (!valid) 995 return 0; 996 } 997 998 slotnum = mt_compute_slot(td, app, slot, input); 999 if (slotnum < 0 || slotnum >= td->maxcontacts) 1000 return 0; 1001 1002 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1003 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1004 1005 if (input_mt_is_active(i_slot) && 1006 input_mt_is_used(mt, i_slot)) 1007 return -EAGAIN; 1008 } 1009 1010 if (quirks & MT_QUIRK_CONFIDENCE) 1011 confidence_state = *slot->confidence_state; 1012 1013 if (quirks & MT_QUIRK_HOVERING) 1014 inrange_state = *slot->inrange_state; 1015 1016 active = *slot->tip_state || inrange_state; 1017 1018 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1019 tool = MT_TOOL_DIAL; 1020 else if (unlikely(!confidence_state)) { 1021 tool = MT_TOOL_PALM; 1022 if (!active && 1023 input_mt_is_active(&mt->slots[slotnum])) { 1024 /* 1025 * The non-confidence was reported for 1026 * previously valid contact that is also no 1027 * longer valid. We can't simply report 1028 * lift-off as userspace will not be aware 1029 * of non-confidence, so we need to split 1030 * it into 2 events: active MT_TOOL_PALM 1031 * and a separate liftoff. 1032 */ 1033 active = true; 1034 set_bit(slotnum, app->pending_palm_slots); 1035 } 1036 } 1037 1038 input_mt_slot(input, slotnum); 1039 input_mt_report_slot_state(input, tool, active); 1040 if (active) { 1041 /* this finger is in proximity of the sensor */ 1042 int wide = (*slot->w > *slot->h); 1043 int major = max(*slot->w, *slot->h); 1044 int minor = min(*slot->w, *slot->h); 1045 int orientation = wide; 1046 int max_azimuth; 1047 int azimuth; 1048 1049 if (slot->a != DEFAULT_ZERO) { 1050 /* 1051 * Azimuth is counter-clockwise and ranges from [0, MAX) 1052 * (a full revolution). Convert it to clockwise ranging 1053 * [-MAX/2, MAX/2]. 1054 * 1055 * Note that ABS_MT_ORIENTATION require us to report 1056 * the limit of [-MAX/4, MAX/4], but the value can go 1057 * out of range to [-MAX/2, MAX/2] to report an upside 1058 * down ellipsis. 1059 */ 1060 azimuth = *slot->a; 1061 max_azimuth = input_abs_get_max(input, 1062 ABS_MT_ORIENTATION); 1063 if (azimuth > max_azimuth * 2) 1064 azimuth -= max_azimuth * 4; 1065 orientation = -azimuth; 1066 } 1067 1068 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1069 /* 1070 * divided by two to match visual scale of touch 1071 * for devices with this quirk 1072 */ 1073 major = major >> 1; 1074 minor = minor >> 1; 1075 } 1076 1077 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1078 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1079 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1080 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1081 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1082 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1083 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1084 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1085 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1086 1087 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1088 } 1089 1090 return 0; 1091 } 1092 1093 static void mt_process_mt_event(struct hid_device *hid, 1094 struct mt_application *app, 1095 struct hid_field *field, 1096 struct hid_usage *usage, 1097 __s32 value, 1098 bool first_packet) 1099 { 1100 __s32 quirks = app->quirks; 1101 struct input_dev *input = field->hidinput->input; 1102 1103 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1104 return; 1105 1106 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1107 1108 /* 1109 * For Win8 PTP touchpads we should only look at 1110 * non finger/touch events in the first_packet of a 1111 * (possible) multi-packet frame. 1112 */ 1113 if (!first_packet) 1114 return; 1115 1116 /* 1117 * For Win8 PTP touchpads we map both the clickpad click 1118 * and any "external" left buttons to BTN_LEFT if a 1119 * device claims to have both we need to report 1 for 1120 * BTN_LEFT if either is pressed, so we or all values 1121 * together and report the result in mt_sync_frame(). 1122 */ 1123 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1124 app->left_button_state |= value; 1125 return; 1126 } 1127 } 1128 1129 input_event(input, usage->type, usage->code, value); 1130 } 1131 1132 static void mt_touch_report(struct hid_device *hid, 1133 struct mt_report_data *rdata) 1134 { 1135 struct mt_device *td = hid_get_drvdata(hid); 1136 struct hid_report *report = rdata->report; 1137 struct mt_application *app = rdata->application; 1138 struct hid_field *field; 1139 struct input_dev *input; 1140 struct mt_usages *slot; 1141 bool first_packet; 1142 unsigned count; 1143 int r, n; 1144 int scantime = 0; 1145 int contact_count = -1; 1146 1147 /* sticky fingers release in progress, abort */ 1148 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1149 return; 1150 1151 scantime = *app->scantime; 1152 app->timestamp = mt_compute_timestamp(app, scantime); 1153 if (app->raw_cc != DEFAULT_ZERO) 1154 contact_count = *app->raw_cc; 1155 1156 /* 1157 * Includes multi-packet support where subsequent 1158 * packets are sent with zero contactcount. 1159 */ 1160 if (contact_count >= 0) { 1161 /* 1162 * For Win8 PTPs the first packet (td->num_received == 0) may 1163 * have a contactcount of 0 if there only is a button event. 1164 * We double check that this is not a continuation packet 1165 * of a possible multi-packet frame be checking that the 1166 * timestamp has changed. 1167 */ 1168 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1169 app->num_received == 0 && 1170 app->prev_scantime != scantime) 1171 app->num_expected = contact_count; 1172 /* A non 0 contact count always indicates a first packet */ 1173 else if (contact_count) 1174 app->num_expected = contact_count; 1175 } 1176 app->prev_scantime = scantime; 1177 1178 first_packet = app->num_received == 0; 1179 1180 input = report->field[0]->hidinput->input; 1181 1182 list_for_each_entry(slot, &app->mt_usages, list) { 1183 if (!mt_process_slot(td, input, app, slot)) 1184 app->num_received++; 1185 } 1186 1187 for (r = 0; r < report->maxfield; r++) { 1188 field = report->field[r]; 1189 count = field->report_count; 1190 1191 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1192 continue; 1193 1194 for (n = 0; n < count; n++) 1195 mt_process_mt_event(hid, app, field, 1196 &field->usage[n], field->value[n], 1197 first_packet); 1198 } 1199 1200 if (app->num_received >= app->num_expected) 1201 mt_sync_frame(td, app, input); 1202 1203 /* 1204 * Windows 8 specs says 2 things: 1205 * - once a contact has been reported, it has to be reported in each 1206 * subsequent report 1207 * - the report rate when fingers are present has to be at least 1208 * the refresh rate of the screen, 60 or 120 Hz 1209 * 1210 * I interprete this that the specification forces a report rate of 1211 * at least 60 Hz for a touchscreen to be certified. 1212 * Which means that if we do not get a report whithin 16 ms, either 1213 * something wrong happens, either the touchscreen forgets to send 1214 * a release. Taking a reasonable margin allows to remove issues 1215 * with USB communication or the load of the machine. 1216 * 1217 * Given that Win 8 devices are forced to send a release, this will 1218 * only affect laggish machines and the ones that have a firmware 1219 * defect. 1220 */ 1221 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1222 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1223 mod_timer(&td->release_timer, 1224 jiffies + msecs_to_jiffies(100)); 1225 else 1226 del_timer(&td->release_timer); 1227 } 1228 1229 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1230 } 1231 1232 static int mt_touch_input_configured(struct hid_device *hdev, 1233 struct hid_input *hi, 1234 struct mt_application *app) 1235 { 1236 struct mt_device *td = hid_get_drvdata(hdev); 1237 struct mt_class *cls = &td->mtclass; 1238 struct input_dev *input = hi->input; 1239 int ret; 1240 1241 if (!td->maxcontacts) 1242 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1243 1244 mt_post_parse(td, app); 1245 if (td->serial_maybe) 1246 mt_post_parse_default_settings(td, app); 1247 1248 if (cls->is_indirect) 1249 app->mt_flags |= INPUT_MT_POINTER; 1250 1251 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1252 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1253 1254 /* check for clickpads */ 1255 if ((app->mt_flags & INPUT_MT_POINTER) && 1256 (app->buttons_count == 1)) 1257 td->is_buttonpad = true; 1258 1259 if (td->is_buttonpad) 1260 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1261 1262 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1263 BITS_TO_LONGS(td->maxcontacts), 1264 sizeof(long), 1265 GFP_KERNEL); 1266 if (!app->pending_palm_slots) 1267 return -ENOMEM; 1268 1269 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1270 if (ret) 1271 return ret; 1272 1273 app->mt_flags = 0; 1274 return 0; 1275 } 1276 1277 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1278 max, EV_KEY, (c)) 1279 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1280 struct hid_field *field, struct hid_usage *usage, 1281 unsigned long **bit, int *max) 1282 { 1283 struct mt_device *td = hid_get_drvdata(hdev); 1284 struct mt_application *application; 1285 struct mt_report_data *rdata; 1286 1287 rdata = mt_find_report_data(td, field->report); 1288 if (!rdata) { 1289 hid_err(hdev, "failed to allocate data for report\n"); 1290 return 0; 1291 } 1292 1293 application = rdata->application; 1294 1295 /* 1296 * If mtclass.export_all_inputs is not set, only map fields from 1297 * TouchScreen or TouchPad collections. We need to ignore fields 1298 * that belong to other collections such as Mouse that might have 1299 * the same GenericDesktop usages. 1300 */ 1301 if (!td->mtclass.export_all_inputs && 1302 field->application != HID_DG_TOUCHSCREEN && 1303 field->application != HID_DG_PEN && 1304 field->application != HID_DG_TOUCHPAD && 1305 field->application != HID_GD_KEYBOARD && 1306 field->application != HID_GD_SYSTEM_CONTROL && 1307 field->application != HID_CP_CONSUMER_CONTROL && 1308 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1309 field->application != HID_GD_SYSTEM_MULTIAXIS && 1310 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1311 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1312 return -1; 1313 1314 /* 1315 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1316 * touchpad report descriptor. We need to treat these as an array to 1317 * map usages to input keys. 1318 */ 1319 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1320 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1321 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1322 set_bit(EV_REP, hi->input->evbit); 1323 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1324 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1325 switch (usage->hid & HID_USAGE) { 1326 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1327 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1328 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1329 case 0x6b: mt_map_key_clear(KEY_F21); break; 1330 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1331 default: 1332 return -1; 1333 } 1334 return 1; 1335 } 1336 1337 if (rdata->is_mt_collection) 1338 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1339 application); 1340 1341 /* 1342 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1343 * for the stylus. Overwrite the hid_input application 1344 */ 1345 if (field->physical == HID_DG_STYLUS) 1346 hi->application = HID_DG_STYLUS; 1347 1348 /* let hid-core decide for the others */ 1349 return 0; 1350 } 1351 1352 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1353 struct hid_field *field, struct hid_usage *usage, 1354 unsigned long **bit, int *max) 1355 { 1356 struct mt_device *td = hid_get_drvdata(hdev); 1357 struct mt_report_data *rdata; 1358 1359 rdata = mt_find_report_data(td, field->report); 1360 if (rdata && rdata->is_mt_collection) { 1361 /* We own these mappings, tell hid-input to ignore them */ 1362 return -1; 1363 } 1364 1365 /* let hid-core decide for the others */ 1366 return 0; 1367 } 1368 1369 static int mt_event(struct hid_device *hid, struct hid_field *field, 1370 struct hid_usage *usage, __s32 value) 1371 { 1372 struct mt_device *td = hid_get_drvdata(hid); 1373 struct mt_report_data *rdata; 1374 1375 rdata = mt_find_report_data(td, field->report); 1376 if (rdata && rdata->is_mt_collection) 1377 return mt_touch_event(hid, field, usage, value); 1378 1379 return 0; 1380 } 1381 1382 static void mt_report(struct hid_device *hid, struct hid_report *report) 1383 { 1384 struct mt_device *td = hid_get_drvdata(hid); 1385 struct hid_field *field = report->field[0]; 1386 struct mt_report_data *rdata; 1387 1388 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1389 return; 1390 1391 rdata = mt_find_report_data(td, report); 1392 if (rdata && rdata->is_mt_collection) 1393 return mt_touch_report(hid, rdata); 1394 1395 if (field && field->hidinput && field->hidinput->input) 1396 input_sync(field->hidinput->input); 1397 } 1398 1399 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1400 struct hid_field *field, 1401 struct hid_usage *usage, 1402 enum latency_mode latency, 1403 bool surface_switch, 1404 bool button_switch, 1405 bool *inputmode_found) 1406 { 1407 struct mt_device *td = hid_get_drvdata(hdev); 1408 struct mt_class *cls = &td->mtclass; 1409 struct hid_report *report = field->report; 1410 unsigned int index = usage->usage_index; 1411 char *buf; 1412 u32 report_len; 1413 int max; 1414 1415 switch (usage->hid) { 1416 case HID_DG_INPUTMODE: 1417 /* 1418 * Some elan panels wrongly declare 2 input mode features, 1419 * and silently ignore when we set the value in the second 1420 * field. Skip the second feature and hope for the best. 1421 */ 1422 if (*inputmode_found) 1423 return false; 1424 1425 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1426 report_len = hid_report_len(report); 1427 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1428 if (!buf) { 1429 hid_err(hdev, 1430 "failed to allocate buffer for report\n"); 1431 return false; 1432 } 1433 hid_hw_raw_request(hdev, report->id, buf, report_len, 1434 HID_FEATURE_REPORT, 1435 HID_REQ_GET_REPORT); 1436 kfree(buf); 1437 } 1438 1439 field->value[index] = td->inputmode_value; 1440 *inputmode_found = true; 1441 return true; 1442 1443 case HID_DG_CONTACTMAX: 1444 if (cls->maxcontacts) { 1445 max = min_t(int, field->logical_maximum, 1446 cls->maxcontacts); 1447 if (field->value[index] != max) { 1448 field->value[index] = max; 1449 return true; 1450 } 1451 } 1452 break; 1453 1454 case HID_DG_LATENCYMODE: 1455 field->value[index] = latency; 1456 return true; 1457 1458 case HID_DG_SURFACESWITCH: 1459 field->value[index] = surface_switch; 1460 return true; 1461 1462 case HID_DG_BUTTONSWITCH: 1463 field->value[index] = button_switch; 1464 return true; 1465 } 1466 1467 return false; /* no need to update the report */ 1468 } 1469 1470 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1471 bool surface_switch, bool button_switch) 1472 { 1473 struct hid_report_enum *rep_enum; 1474 struct hid_report *rep; 1475 struct hid_usage *usage; 1476 int i, j; 1477 bool update_report; 1478 bool inputmode_found = false; 1479 1480 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1481 list_for_each_entry(rep, &rep_enum->report_list, list) { 1482 update_report = false; 1483 1484 for (i = 0; i < rep->maxfield; i++) { 1485 /* Ignore if report count is out of bounds. */ 1486 if (rep->field[i]->report_count < 1) 1487 continue; 1488 1489 for (j = 0; j < rep->field[i]->maxusage; j++) { 1490 usage = &rep->field[i]->usage[j]; 1491 1492 if (mt_need_to_apply_feature(hdev, 1493 rep->field[i], 1494 usage, 1495 latency, 1496 surface_switch, 1497 button_switch, 1498 &inputmode_found)) 1499 update_report = true; 1500 } 1501 } 1502 1503 if (update_report) 1504 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1505 } 1506 } 1507 1508 static void mt_post_parse_default_settings(struct mt_device *td, 1509 struct mt_application *app) 1510 { 1511 __s32 quirks = app->quirks; 1512 1513 /* unknown serial device needs special quirks */ 1514 if (list_is_singular(&app->mt_usages)) { 1515 quirks |= MT_QUIRK_ALWAYS_VALID; 1516 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1517 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1518 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1519 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1520 } 1521 1522 app->quirks = quirks; 1523 } 1524 1525 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1526 { 1527 if (!app->have_contact_count) 1528 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1529 } 1530 1531 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1532 { 1533 struct mt_device *td = hid_get_drvdata(hdev); 1534 char *name; 1535 const char *suffix = NULL; 1536 struct mt_report_data *rdata; 1537 struct mt_application *mt_application = NULL; 1538 struct hid_report *report; 1539 int ret; 1540 1541 list_for_each_entry(report, &hi->reports, hidinput_list) { 1542 rdata = mt_find_report_data(td, report); 1543 if (!rdata) { 1544 hid_err(hdev, "failed to allocate data for report\n"); 1545 return -ENOMEM; 1546 } 1547 1548 mt_application = rdata->application; 1549 1550 if (rdata->is_mt_collection) { 1551 ret = mt_touch_input_configured(hdev, hi, 1552 mt_application); 1553 if (ret) 1554 return ret; 1555 } 1556 } 1557 1558 switch (hi->application) { 1559 case HID_GD_KEYBOARD: 1560 case HID_GD_KEYPAD: 1561 case HID_GD_MOUSE: 1562 case HID_DG_TOUCHPAD: 1563 case HID_GD_SYSTEM_CONTROL: 1564 case HID_CP_CONSUMER_CONTROL: 1565 case HID_GD_WIRELESS_RADIO_CTLS: 1566 case HID_GD_SYSTEM_MULTIAXIS: 1567 /* already handled by hid core */ 1568 break; 1569 case HID_DG_TOUCHSCREEN: 1570 /* we do not set suffix = "Touchscreen" */ 1571 hi->input->name = hdev->name; 1572 break; 1573 case HID_DG_STYLUS: 1574 /* force BTN_STYLUS to allow tablet matching in udev */ 1575 __set_bit(BTN_STYLUS, hi->input->keybit); 1576 break; 1577 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1578 suffix = "Custom Media Keys"; 1579 break; 1580 case HID_DG_PEN: 1581 suffix = "Stylus"; 1582 break; 1583 default: 1584 suffix = "UNKNOWN"; 1585 break; 1586 } 1587 1588 if (suffix) { 1589 name = devm_kzalloc(&hi->input->dev, 1590 strlen(hdev->name) + strlen(suffix) + 2, 1591 GFP_KERNEL); 1592 if (name) { 1593 sprintf(name, "%s %s", hdev->name, suffix); 1594 hi->input->name = name; 1595 } 1596 } 1597 1598 return 0; 1599 } 1600 1601 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1602 { 1603 if (field->usage[0].hid != usage || 1604 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1605 return; 1606 1607 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1608 field->flags |= HID_MAIN_ITEM_VARIABLE; 1609 } 1610 1611 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1612 { 1613 struct hid_report *report; 1614 int i; 1615 1616 list_for_each_entry(report, 1617 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1618 list) { 1619 1620 if (!report->maxfield) 1621 continue; 1622 1623 for (i = 0; i < report->maxfield; i++) 1624 if (report->field[i]->maxusage >= 1) 1625 mt_fix_const_field(report->field[i], usage); 1626 } 1627 } 1628 1629 static void mt_release_contacts(struct hid_device *hid) 1630 { 1631 struct hid_input *hidinput; 1632 struct mt_application *application; 1633 struct mt_device *td = hid_get_drvdata(hid); 1634 1635 list_for_each_entry(hidinput, &hid->inputs, list) { 1636 struct input_dev *input_dev = hidinput->input; 1637 struct input_mt *mt = input_dev->mt; 1638 int i; 1639 1640 if (mt) { 1641 for (i = 0; i < mt->num_slots; i++) { 1642 input_mt_slot(input_dev, i); 1643 input_mt_report_slot_state(input_dev, 1644 MT_TOOL_FINGER, 1645 false); 1646 } 1647 input_mt_sync_frame(input_dev); 1648 input_sync(input_dev); 1649 } 1650 } 1651 1652 list_for_each_entry(application, &td->applications, list) { 1653 application->num_received = 0; 1654 } 1655 } 1656 1657 static void mt_expired_timeout(struct timer_list *t) 1658 { 1659 struct mt_device *td = from_timer(td, t, release_timer); 1660 struct hid_device *hdev = td->hdev; 1661 1662 /* 1663 * An input report came in just before we release the sticky fingers, 1664 * it will take care of the sticky fingers. 1665 */ 1666 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1667 return; 1668 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1669 mt_release_contacts(hdev); 1670 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1671 } 1672 1673 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1674 { 1675 int ret, i; 1676 struct mt_device *td; 1677 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1678 1679 for (i = 0; mt_classes[i].name ; i++) { 1680 if (id->driver_data == mt_classes[i].name) { 1681 mtclass = &(mt_classes[i]); 1682 break; 1683 } 1684 } 1685 1686 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1687 if (!td) { 1688 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1689 return -ENOMEM; 1690 } 1691 td->hdev = hdev; 1692 td->mtclass = *mtclass; 1693 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1694 hid_set_drvdata(hdev, td); 1695 1696 INIT_LIST_HEAD(&td->applications); 1697 INIT_LIST_HEAD(&td->reports); 1698 1699 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1700 td->serial_maybe = true; 1701 1702 /* This allows the driver to correctly support devices 1703 * that emit events over several HID messages. 1704 */ 1705 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1706 1707 /* 1708 * This allows the driver to handle different input sensors 1709 * that emits events through different applications on the same HID 1710 * device. 1711 */ 1712 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1713 1714 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1715 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1716 1717 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1718 1719 ret = hid_parse(hdev); 1720 if (ret != 0) 1721 return ret; 1722 1723 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1724 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1725 1726 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1727 if (ret) 1728 return ret; 1729 1730 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1731 if (ret) 1732 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1733 hdev->name); 1734 1735 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1736 1737 return 0; 1738 } 1739 1740 #ifdef CONFIG_PM 1741 static int mt_reset_resume(struct hid_device *hdev) 1742 { 1743 mt_release_contacts(hdev); 1744 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1745 return 0; 1746 } 1747 1748 static int mt_resume(struct hid_device *hdev) 1749 { 1750 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1751 * It should be safe to send it to other devices too. 1752 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1753 1754 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1755 1756 return 0; 1757 } 1758 #endif 1759 1760 static void mt_remove(struct hid_device *hdev) 1761 { 1762 struct mt_device *td = hid_get_drvdata(hdev); 1763 1764 del_timer_sync(&td->release_timer); 1765 1766 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1767 hid_hw_stop(hdev); 1768 } 1769 1770 /* 1771 * This list contains only: 1772 * - VID/PID of products not working with the default multitouch handling 1773 * - 2 generic rules. 1774 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1775 */ 1776 static const struct hid_device_id mt_devices[] = { 1777 1778 /* 3M panels */ 1779 { .driver_data = MT_CLS_3M, 1780 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1781 USB_DEVICE_ID_3M1968) }, 1782 { .driver_data = MT_CLS_3M, 1783 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1784 USB_DEVICE_ID_3M2256) }, 1785 { .driver_data = MT_CLS_3M, 1786 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1787 USB_DEVICE_ID_3M3266) }, 1788 1789 /* Alps devices */ 1790 { .driver_data = MT_CLS_WIN_8_DUAL, 1791 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1792 USB_VENDOR_ID_ALPS_JP, 1793 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1794 { .driver_data = MT_CLS_WIN_8_DUAL, 1795 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1796 USB_VENDOR_ID_ALPS_JP, 1797 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1798 { .driver_data = MT_CLS_WIN_8_DUAL, 1799 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1800 USB_VENDOR_ID_ALPS_JP, 1801 HID_DEVICE_ID_ALPS_1222) }, 1802 1803 /* Lenovo X1 TAB Gen 2 */ 1804 { .driver_data = MT_CLS_WIN_8_DUAL, 1805 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1806 USB_VENDOR_ID_LENOVO, 1807 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1808 1809 /* Lenovo X1 TAB Gen 3 */ 1810 { .driver_data = MT_CLS_WIN_8_DUAL, 1811 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1812 USB_VENDOR_ID_LENOVO, 1813 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 1814 1815 /* Anton devices */ 1816 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1817 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1818 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1819 1820 /* Asus T304UA */ 1821 { .driver_data = MT_CLS_ASUS, 1822 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1823 USB_VENDOR_ID_ASUSTEK, 1824 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1825 1826 /* Atmel panels */ 1827 { .driver_data = MT_CLS_SERIAL, 1828 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1829 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1830 1831 /* Baanto multitouch devices */ 1832 { .driver_data = MT_CLS_NSMU, 1833 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1834 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1835 1836 /* Cando panels */ 1837 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1838 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1839 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1840 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1841 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1842 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1843 1844 /* Chunghwa Telecom touch panels */ 1845 { .driver_data = MT_CLS_NSMU, 1846 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1847 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1848 1849 /* Cirque devices */ 1850 { .driver_data = MT_CLS_WIN_8_DUAL, 1851 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1852 I2C_VENDOR_ID_CIRQUE, 1853 I2C_PRODUCT_ID_CIRQUE_121F) }, 1854 1855 /* CJTouch panels */ 1856 { .driver_data = MT_CLS_NSMU, 1857 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1858 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1859 { .driver_data = MT_CLS_NSMU, 1860 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1861 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1862 1863 /* CVTouch panels */ 1864 { .driver_data = MT_CLS_NSMU, 1865 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1866 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1867 1868 /* eGalax devices (resistive) */ 1869 { .driver_data = MT_CLS_EGALAX, 1870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1872 { .driver_data = MT_CLS_EGALAX, 1873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1875 1876 /* eGalax devices (capacitive) */ 1877 { .driver_data = MT_CLS_EGALAX_SERIAL, 1878 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1880 { .driver_data = MT_CLS_EGALAX, 1881 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1882 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1883 { .driver_data = MT_CLS_EGALAX_SERIAL, 1884 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1885 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1886 { .driver_data = MT_CLS_EGALAX_SERIAL, 1887 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1888 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1889 { .driver_data = MT_CLS_EGALAX_SERIAL, 1890 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1891 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1892 { .driver_data = MT_CLS_EGALAX_SERIAL, 1893 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1894 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1895 { .driver_data = MT_CLS_EGALAX, 1896 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1897 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1898 { .driver_data = MT_CLS_EGALAX, 1899 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1900 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1901 { .driver_data = MT_CLS_EGALAX_SERIAL, 1902 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1903 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1904 { .driver_data = MT_CLS_EGALAX, 1905 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1906 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1907 { .driver_data = MT_CLS_EGALAX, 1908 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1909 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1910 { .driver_data = MT_CLS_EGALAX, 1911 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1912 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1913 { .driver_data = MT_CLS_EGALAX, 1914 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1915 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1916 { .driver_data = MT_CLS_EGALAX_SERIAL, 1917 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1918 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1919 { .driver_data = MT_CLS_EGALAX_SERIAL, 1920 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1921 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1922 { .driver_data = MT_CLS_EGALAX_SERIAL, 1923 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1924 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1925 1926 /* Elitegroup panel */ 1927 { .driver_data = MT_CLS_SERIAL, 1928 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1929 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1930 1931 /* Flatfrog Panels */ 1932 { .driver_data = MT_CLS_FLATFROG, 1933 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1934 USB_DEVICE_ID_MULTITOUCH_3200) }, 1935 1936 /* FocalTech Panels */ 1937 { .driver_data = MT_CLS_SERIAL, 1938 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1939 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1940 1941 /* GeneralTouch panel */ 1942 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1943 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1944 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1945 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1946 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1947 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1948 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1949 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1950 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1951 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1952 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1953 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1954 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1955 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1956 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1957 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1958 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1959 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1960 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1961 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1962 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1963 1964 /* Gametel game controller */ 1965 { .driver_data = MT_CLS_NSMU, 1966 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1967 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1968 1969 /* GoodTouch panels */ 1970 { .driver_data = MT_CLS_NSMU, 1971 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1972 USB_DEVICE_ID_GOODTOUCH_000f) }, 1973 1974 /* Hanvon panels */ 1975 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1976 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1977 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1978 1979 /* Ilitek dual touch panel */ 1980 { .driver_data = MT_CLS_NSMU, 1981 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1982 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1983 1984 /* LG Melfas panel */ 1985 { .driver_data = MT_CLS_LG, 1986 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1987 USB_DEVICE_ID_LG_MELFAS_MT) }, 1988 1989 /* MosArt panels */ 1990 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1991 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1992 USB_DEVICE_ID_ASUS_T91MT)}, 1993 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1994 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1995 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1996 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1997 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1998 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1999 2000 /* Novatek Panel */ 2001 { .driver_data = MT_CLS_NSMU, 2002 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2003 USB_DEVICE_ID_NOVATEK_PCT) }, 2004 2005 /* Ntrig Panel */ 2006 { .driver_data = MT_CLS_NSMU, 2007 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2008 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2009 2010 /* Panasonic panels */ 2011 { .driver_data = MT_CLS_PANASONIC, 2012 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2013 USB_DEVICE_ID_PANABOARD_UBT780) }, 2014 { .driver_data = MT_CLS_PANASONIC, 2015 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2016 USB_DEVICE_ID_PANABOARD_UBT880) }, 2017 2018 /* PixArt optical touch screen */ 2019 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2020 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2021 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2022 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2023 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2024 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2025 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2026 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2027 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2028 2029 /* PixCir-based panels */ 2030 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2031 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2032 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2033 2034 /* Quanta-based panels */ 2035 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2036 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2037 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2038 2039 /* Razer touchpads */ 2040 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2041 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2042 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2043 2044 /* Smart Tech panels */ 2045 { .driver_data = MT_CLS_SMART_TECH, 2046 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2047 2048 /* Stantum panels */ 2049 { .driver_data = MT_CLS_CONFIDENCE, 2050 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2051 USB_DEVICE_ID_MTP_STM)}, 2052 2053 /* TopSeed panels */ 2054 { .driver_data = MT_CLS_TOPSEED, 2055 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2056 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2057 2058 /* Touch International panels */ 2059 { .driver_data = MT_CLS_NSMU, 2060 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2061 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2062 2063 /* Unitec panels */ 2064 { .driver_data = MT_CLS_NSMU, 2065 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2066 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2067 { .driver_data = MT_CLS_NSMU, 2068 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2069 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2070 2071 /* VTL panels */ 2072 { .driver_data = MT_CLS_VTL, 2073 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2074 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2075 2076 /* Wistron panels */ 2077 { .driver_data = MT_CLS_NSMU, 2078 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2079 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2080 2081 /* XAT */ 2082 { .driver_data = MT_CLS_NSMU, 2083 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2084 USB_DEVICE_ID_XAT_CSR) }, 2085 2086 /* Xiroku */ 2087 { .driver_data = MT_CLS_NSMU, 2088 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2089 USB_DEVICE_ID_XIROKU_SPX) }, 2090 { .driver_data = MT_CLS_NSMU, 2091 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2092 USB_DEVICE_ID_XIROKU_MPX) }, 2093 { .driver_data = MT_CLS_NSMU, 2094 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2095 USB_DEVICE_ID_XIROKU_CSR) }, 2096 { .driver_data = MT_CLS_NSMU, 2097 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2098 USB_DEVICE_ID_XIROKU_SPX1) }, 2099 { .driver_data = MT_CLS_NSMU, 2100 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2101 USB_DEVICE_ID_XIROKU_MPX1) }, 2102 { .driver_data = MT_CLS_NSMU, 2103 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2104 USB_DEVICE_ID_XIROKU_CSR1) }, 2105 { .driver_data = MT_CLS_NSMU, 2106 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2107 USB_DEVICE_ID_XIROKU_SPX2) }, 2108 { .driver_data = MT_CLS_NSMU, 2109 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2110 USB_DEVICE_ID_XIROKU_MPX2) }, 2111 { .driver_data = MT_CLS_NSMU, 2112 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2113 USB_DEVICE_ID_XIROKU_CSR2) }, 2114 2115 /* Google MT devices */ 2116 { .driver_data = MT_CLS_GOOGLE, 2117 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2118 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2119 2120 /* Generic MT device */ 2121 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2122 2123 /* Generic Win 8 certified MT device */ 2124 { .driver_data = MT_CLS_WIN_8, 2125 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2126 HID_ANY_ID, HID_ANY_ID) }, 2127 { } 2128 }; 2129 MODULE_DEVICE_TABLE(hid, mt_devices); 2130 2131 static const struct hid_usage_id mt_grabbed_usages[] = { 2132 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2133 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2134 }; 2135 2136 static struct hid_driver mt_driver = { 2137 .name = "hid-multitouch", 2138 .id_table = mt_devices, 2139 .probe = mt_probe, 2140 .remove = mt_remove, 2141 .input_mapping = mt_input_mapping, 2142 .input_mapped = mt_input_mapped, 2143 .input_configured = mt_input_configured, 2144 .feature_mapping = mt_feature_mapping, 2145 .usage_table = mt_grabbed_usages, 2146 .event = mt_event, 2147 .report = mt_report, 2148 #ifdef CONFIG_PM 2149 .reset_resume = mt_reset_resume, 2150 .resume = mt_resume, 2151 #endif 2152 }; 2153 module_hid_driver(mt_driver); 2154