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 input_set_capability(hi->input, EV_KEY, code); 860 return 1; 861 862 case 0xff000000: 863 /* we do not want to map these: no input-oriented meaning */ 864 return -1; 865 } 866 867 return 0; 868 } 869 870 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 871 struct mt_usages *slot, 872 struct input_dev *input) 873 { 874 __s32 quirks = app->quirks; 875 876 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 877 return *slot->contactid; 878 879 if (quirks & MT_QUIRK_CYPRESS) 880 return cypress_compute_slot(app, slot); 881 882 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 883 return app->num_received; 884 885 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 886 return *slot->contactid - 1; 887 888 return input_mt_get_slot_by_key(input, *slot->contactid); 889 } 890 891 static void mt_release_pending_palms(struct mt_device *td, 892 struct mt_application *app, 893 struct input_dev *input) 894 { 895 int slotnum; 896 bool need_sync = false; 897 898 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 899 clear_bit(slotnum, app->pending_palm_slots); 900 901 input_mt_slot(input, slotnum); 902 input_mt_report_slot_inactive(input); 903 904 need_sync = true; 905 } 906 907 if (need_sync) { 908 input_mt_sync_frame(input); 909 input_sync(input); 910 } 911 } 912 913 /* 914 * this function is called when a whole packet has been received and processed, 915 * so that it can decide what to send to the input layer. 916 */ 917 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 918 struct input_dev *input) 919 { 920 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 921 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 922 923 input_mt_sync_frame(input); 924 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 925 input_sync(input); 926 927 mt_release_pending_palms(td, app, input); 928 929 app->num_received = 0; 930 app->left_button_state = 0; 931 932 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 933 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 934 else 935 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 936 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 937 } 938 939 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 940 { 941 long delta = value - app->prev_scantime; 942 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 943 944 app->jiffies = jiffies; 945 946 if (delta < 0) 947 delta += app->scantime_logical_max; 948 949 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 950 delta *= 100; 951 952 if (jdelta > MAX_TIMESTAMP_INTERVAL) 953 /* No data received for a while, resync the timestamp. */ 954 return 0; 955 else 956 return app->timestamp + delta; 957 } 958 959 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 960 struct hid_usage *usage, __s32 value) 961 { 962 /* we will handle the hidinput part later, now remains hiddev */ 963 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 964 hid->hiddev_hid_event(hid, field, usage, value); 965 966 return 1; 967 } 968 969 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 970 struct mt_application *app, 971 struct mt_usages *slot) 972 { 973 struct input_mt *mt = input->mt; 974 __s32 quirks = app->quirks; 975 bool valid = true; 976 bool confidence_state = true; 977 bool inrange_state = false; 978 int active; 979 int slotnum; 980 int tool = MT_TOOL_FINGER; 981 982 if (!slot) 983 return -EINVAL; 984 985 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 986 app->num_received >= app->num_expected) 987 return -EAGAIN; 988 989 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 990 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 991 valid = *slot->inrange_state; 992 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 993 valid = *slot->tip_state; 994 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 995 valid = *slot->confidence_state; 996 997 if (!valid) 998 return 0; 999 } 1000 1001 slotnum = mt_compute_slot(td, app, slot, input); 1002 if (slotnum < 0 || slotnum >= td->maxcontacts) 1003 return 0; 1004 1005 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1006 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1007 1008 if (input_mt_is_active(i_slot) && 1009 input_mt_is_used(mt, i_slot)) 1010 return -EAGAIN; 1011 } 1012 1013 if (quirks & MT_QUIRK_CONFIDENCE) 1014 confidence_state = *slot->confidence_state; 1015 1016 if (quirks & MT_QUIRK_HOVERING) 1017 inrange_state = *slot->inrange_state; 1018 1019 active = *slot->tip_state || inrange_state; 1020 1021 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1022 tool = MT_TOOL_DIAL; 1023 else if (unlikely(!confidence_state)) { 1024 tool = MT_TOOL_PALM; 1025 if (!active && mt && 1026 input_mt_is_active(&mt->slots[slotnum])) { 1027 /* 1028 * The non-confidence was reported for 1029 * previously valid contact that is also no 1030 * longer valid. We can't simply report 1031 * lift-off as userspace will not be aware 1032 * of non-confidence, so we need to split 1033 * it into 2 events: active MT_TOOL_PALM 1034 * and a separate liftoff. 1035 */ 1036 active = true; 1037 set_bit(slotnum, app->pending_palm_slots); 1038 } 1039 } 1040 1041 input_mt_slot(input, slotnum); 1042 input_mt_report_slot_state(input, tool, active); 1043 if (active) { 1044 /* this finger is in proximity of the sensor */ 1045 int wide = (*slot->w > *slot->h); 1046 int major = max(*slot->w, *slot->h); 1047 int minor = min(*slot->w, *slot->h); 1048 int orientation = wide; 1049 int max_azimuth; 1050 int azimuth; 1051 1052 if (slot->a != DEFAULT_ZERO) { 1053 /* 1054 * Azimuth is counter-clockwise and ranges from [0, MAX) 1055 * (a full revolution). Convert it to clockwise ranging 1056 * [-MAX/2, MAX/2]. 1057 * 1058 * Note that ABS_MT_ORIENTATION require us to report 1059 * the limit of [-MAX/4, MAX/4], but the value can go 1060 * out of range to [-MAX/2, MAX/2] to report an upside 1061 * down ellipsis. 1062 */ 1063 azimuth = *slot->a; 1064 max_azimuth = input_abs_get_max(input, 1065 ABS_MT_ORIENTATION); 1066 if (azimuth > max_azimuth * 2) 1067 azimuth -= max_azimuth * 4; 1068 orientation = -azimuth; 1069 } 1070 1071 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1072 /* 1073 * divided by two to match visual scale of touch 1074 * for devices with this quirk 1075 */ 1076 major = major >> 1; 1077 minor = minor >> 1; 1078 } 1079 1080 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x); 1081 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y); 1082 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx); 1083 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy); 1084 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1085 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1086 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1087 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1088 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1089 1090 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1091 } 1092 1093 return 0; 1094 } 1095 1096 static void mt_process_mt_event(struct hid_device *hid, 1097 struct mt_application *app, 1098 struct hid_field *field, 1099 struct hid_usage *usage, 1100 __s32 value, 1101 bool first_packet) 1102 { 1103 __s32 quirks = app->quirks; 1104 struct input_dev *input = field->hidinput->input; 1105 1106 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1107 return; 1108 1109 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1110 1111 /* 1112 * For Win8 PTP touchpads we should only look at 1113 * non finger/touch events in the first_packet of a 1114 * (possible) multi-packet frame. 1115 */ 1116 if (!first_packet) 1117 return; 1118 1119 /* 1120 * For Win8 PTP touchpads we map both the clickpad click 1121 * and any "external" left buttons to BTN_LEFT if a 1122 * device claims to have both we need to report 1 for 1123 * BTN_LEFT if either is pressed, so we or all values 1124 * together and report the result in mt_sync_frame(). 1125 */ 1126 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1127 app->left_button_state |= value; 1128 return; 1129 } 1130 } 1131 1132 input_event(input, usage->type, usage->code, value); 1133 } 1134 1135 static void mt_touch_report(struct hid_device *hid, 1136 struct mt_report_data *rdata) 1137 { 1138 struct mt_device *td = hid_get_drvdata(hid); 1139 struct hid_report *report = rdata->report; 1140 struct mt_application *app = rdata->application; 1141 struct hid_field *field; 1142 struct input_dev *input; 1143 struct mt_usages *slot; 1144 bool first_packet; 1145 unsigned count; 1146 int r, n; 1147 int scantime = 0; 1148 int contact_count = -1; 1149 1150 /* sticky fingers release in progress, abort */ 1151 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1152 return; 1153 1154 scantime = *app->scantime; 1155 app->timestamp = mt_compute_timestamp(app, scantime); 1156 if (app->raw_cc != DEFAULT_ZERO) 1157 contact_count = *app->raw_cc; 1158 1159 /* 1160 * Includes multi-packet support where subsequent 1161 * packets are sent with zero contactcount. 1162 */ 1163 if (contact_count >= 0) { 1164 /* 1165 * For Win8 PTPs the first packet (td->num_received == 0) may 1166 * have a contactcount of 0 if there only is a button event. 1167 * We double check that this is not a continuation packet 1168 * of a possible multi-packet frame be checking that the 1169 * timestamp has changed. 1170 */ 1171 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1172 app->num_received == 0 && 1173 app->prev_scantime != scantime) 1174 app->num_expected = contact_count; 1175 /* A non 0 contact count always indicates a first packet */ 1176 else if (contact_count) 1177 app->num_expected = contact_count; 1178 } 1179 app->prev_scantime = scantime; 1180 1181 first_packet = app->num_received == 0; 1182 1183 input = report->field[0]->hidinput->input; 1184 1185 list_for_each_entry(slot, &app->mt_usages, list) { 1186 if (!mt_process_slot(td, input, app, slot)) 1187 app->num_received++; 1188 } 1189 1190 for (r = 0; r < report->maxfield; r++) { 1191 field = report->field[r]; 1192 count = field->report_count; 1193 1194 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1195 continue; 1196 1197 for (n = 0; n < count; n++) 1198 mt_process_mt_event(hid, app, field, 1199 &field->usage[n], field->value[n], 1200 first_packet); 1201 } 1202 1203 if (app->num_received >= app->num_expected) 1204 mt_sync_frame(td, app, input); 1205 1206 /* 1207 * Windows 8 specs says 2 things: 1208 * - once a contact has been reported, it has to be reported in each 1209 * subsequent report 1210 * - the report rate when fingers are present has to be at least 1211 * the refresh rate of the screen, 60 or 120 Hz 1212 * 1213 * I interprete this that the specification forces a report rate of 1214 * at least 60 Hz for a touchscreen to be certified. 1215 * Which means that if we do not get a report whithin 16 ms, either 1216 * something wrong happens, either the touchscreen forgets to send 1217 * a release. Taking a reasonable margin allows to remove issues 1218 * with USB communication or the load of the machine. 1219 * 1220 * Given that Win 8 devices are forced to send a release, this will 1221 * only affect laggish machines and the ones that have a firmware 1222 * defect. 1223 */ 1224 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1225 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1226 mod_timer(&td->release_timer, 1227 jiffies + msecs_to_jiffies(100)); 1228 else 1229 del_timer(&td->release_timer); 1230 } 1231 1232 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1233 } 1234 1235 static int mt_touch_input_configured(struct hid_device *hdev, 1236 struct hid_input *hi, 1237 struct mt_application *app) 1238 { 1239 struct mt_device *td = hid_get_drvdata(hdev); 1240 struct mt_class *cls = &td->mtclass; 1241 struct input_dev *input = hi->input; 1242 int ret; 1243 1244 if (!td->maxcontacts) 1245 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1246 1247 mt_post_parse(td, app); 1248 if (td->serial_maybe) 1249 mt_post_parse_default_settings(td, app); 1250 1251 if (cls->is_indirect) 1252 app->mt_flags |= INPUT_MT_POINTER; 1253 1254 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1255 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1256 1257 /* check for clickpads */ 1258 if ((app->mt_flags & INPUT_MT_POINTER) && 1259 (app->buttons_count == 1)) 1260 td->is_buttonpad = true; 1261 1262 if (td->is_buttonpad) 1263 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1264 1265 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1266 BITS_TO_LONGS(td->maxcontacts), 1267 sizeof(long), 1268 GFP_KERNEL); 1269 if (!app->pending_palm_slots) 1270 return -ENOMEM; 1271 1272 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1273 if (ret) 1274 return ret; 1275 1276 app->mt_flags = 0; 1277 return 0; 1278 } 1279 1280 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1281 max, EV_KEY, (c)) 1282 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1283 struct hid_field *field, struct hid_usage *usage, 1284 unsigned long **bit, int *max) 1285 { 1286 struct mt_device *td = hid_get_drvdata(hdev); 1287 struct mt_application *application; 1288 struct mt_report_data *rdata; 1289 1290 rdata = mt_find_report_data(td, field->report); 1291 if (!rdata) { 1292 hid_err(hdev, "failed to allocate data for report\n"); 1293 return 0; 1294 } 1295 1296 application = rdata->application; 1297 1298 /* 1299 * If mtclass.export_all_inputs is not set, only map fields from 1300 * TouchScreen or TouchPad collections. We need to ignore fields 1301 * that belong to other collections such as Mouse that might have 1302 * the same GenericDesktop usages. 1303 */ 1304 if (!td->mtclass.export_all_inputs && 1305 field->application != HID_DG_TOUCHSCREEN && 1306 field->application != HID_DG_PEN && 1307 field->application != HID_DG_TOUCHPAD && 1308 field->application != HID_GD_KEYBOARD && 1309 field->application != HID_GD_SYSTEM_CONTROL && 1310 field->application != HID_CP_CONSUMER_CONTROL && 1311 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1312 field->application != HID_GD_SYSTEM_MULTIAXIS && 1313 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1314 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1315 return -1; 1316 1317 /* 1318 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1319 * touchpad report descriptor. We need to treat these as an array to 1320 * map usages to input keys. 1321 */ 1322 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1323 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1324 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1325 set_bit(EV_REP, hi->input->evbit); 1326 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1327 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1328 switch (usage->hid & HID_USAGE) { 1329 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1330 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1331 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1332 case 0x6b: mt_map_key_clear(KEY_F21); break; 1333 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1334 default: 1335 return -1; 1336 } 1337 return 1; 1338 } 1339 1340 if (rdata->is_mt_collection) 1341 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1342 application); 1343 1344 /* 1345 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1346 * for the stylus. Overwrite the hid_input application 1347 */ 1348 if (field->physical == HID_DG_STYLUS) 1349 hi->application = HID_DG_STYLUS; 1350 1351 /* let hid-core decide for the others */ 1352 return 0; 1353 } 1354 1355 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1356 struct hid_field *field, struct hid_usage *usage, 1357 unsigned long **bit, int *max) 1358 { 1359 struct mt_device *td = hid_get_drvdata(hdev); 1360 struct mt_report_data *rdata; 1361 1362 rdata = mt_find_report_data(td, field->report); 1363 if (rdata && rdata->is_mt_collection) { 1364 /* We own these mappings, tell hid-input to ignore them */ 1365 return -1; 1366 } 1367 1368 /* let hid-core decide for the others */ 1369 return 0; 1370 } 1371 1372 static int mt_event(struct hid_device *hid, struct hid_field *field, 1373 struct hid_usage *usage, __s32 value) 1374 { 1375 struct mt_device *td = hid_get_drvdata(hid); 1376 struct mt_report_data *rdata; 1377 1378 rdata = mt_find_report_data(td, field->report); 1379 if (rdata && rdata->is_mt_collection) 1380 return mt_touch_event(hid, field, usage, value); 1381 1382 return 0; 1383 } 1384 1385 static void mt_report(struct hid_device *hid, struct hid_report *report) 1386 { 1387 struct mt_device *td = hid_get_drvdata(hid); 1388 struct hid_field *field = report->field[0]; 1389 struct mt_report_data *rdata; 1390 1391 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1392 return; 1393 1394 rdata = mt_find_report_data(td, report); 1395 if (rdata && rdata->is_mt_collection) 1396 return mt_touch_report(hid, rdata); 1397 1398 if (field && field->hidinput && field->hidinput->input) 1399 input_sync(field->hidinput->input); 1400 } 1401 1402 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1403 struct hid_field *field, 1404 struct hid_usage *usage, 1405 enum latency_mode latency, 1406 bool surface_switch, 1407 bool button_switch, 1408 bool *inputmode_found) 1409 { 1410 struct mt_device *td = hid_get_drvdata(hdev); 1411 struct mt_class *cls = &td->mtclass; 1412 struct hid_report *report = field->report; 1413 unsigned int index = usage->usage_index; 1414 char *buf; 1415 u32 report_len; 1416 int max; 1417 1418 switch (usage->hid) { 1419 case HID_DG_INPUTMODE: 1420 /* 1421 * Some elan panels wrongly declare 2 input mode features, 1422 * and silently ignore when we set the value in the second 1423 * field. Skip the second feature and hope for the best. 1424 */ 1425 if (*inputmode_found) 1426 return false; 1427 1428 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1429 report_len = hid_report_len(report); 1430 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1431 if (!buf) { 1432 hid_err(hdev, 1433 "failed to allocate buffer for report\n"); 1434 return false; 1435 } 1436 hid_hw_raw_request(hdev, report->id, buf, report_len, 1437 HID_FEATURE_REPORT, 1438 HID_REQ_GET_REPORT); 1439 kfree(buf); 1440 } 1441 1442 field->value[index] = td->inputmode_value; 1443 *inputmode_found = true; 1444 return true; 1445 1446 case HID_DG_CONTACTMAX: 1447 if (cls->maxcontacts) { 1448 max = min_t(int, field->logical_maximum, 1449 cls->maxcontacts); 1450 if (field->value[index] != max) { 1451 field->value[index] = max; 1452 return true; 1453 } 1454 } 1455 break; 1456 1457 case HID_DG_LATENCYMODE: 1458 field->value[index] = latency; 1459 return true; 1460 1461 case HID_DG_SURFACESWITCH: 1462 field->value[index] = surface_switch; 1463 return true; 1464 1465 case HID_DG_BUTTONSWITCH: 1466 field->value[index] = button_switch; 1467 return true; 1468 } 1469 1470 return false; /* no need to update the report */ 1471 } 1472 1473 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1474 bool surface_switch, bool button_switch) 1475 { 1476 struct hid_report_enum *rep_enum; 1477 struct hid_report *rep; 1478 struct hid_usage *usage; 1479 int i, j; 1480 bool update_report; 1481 bool inputmode_found = false; 1482 1483 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1484 list_for_each_entry(rep, &rep_enum->report_list, list) { 1485 update_report = false; 1486 1487 for (i = 0; i < rep->maxfield; i++) { 1488 /* Ignore if report count is out of bounds. */ 1489 if (rep->field[i]->report_count < 1) 1490 continue; 1491 1492 for (j = 0; j < rep->field[i]->maxusage; j++) { 1493 usage = &rep->field[i]->usage[j]; 1494 1495 if (mt_need_to_apply_feature(hdev, 1496 rep->field[i], 1497 usage, 1498 latency, 1499 surface_switch, 1500 button_switch, 1501 &inputmode_found)) 1502 update_report = true; 1503 } 1504 } 1505 1506 if (update_report) 1507 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1508 } 1509 } 1510 1511 static void mt_post_parse_default_settings(struct mt_device *td, 1512 struct mt_application *app) 1513 { 1514 __s32 quirks = app->quirks; 1515 1516 /* unknown serial device needs special quirks */ 1517 if (list_is_singular(&app->mt_usages)) { 1518 quirks |= MT_QUIRK_ALWAYS_VALID; 1519 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1520 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1521 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1522 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1523 } 1524 1525 app->quirks = quirks; 1526 } 1527 1528 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1529 { 1530 if (!app->have_contact_count) 1531 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1532 } 1533 1534 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1535 { 1536 struct mt_device *td = hid_get_drvdata(hdev); 1537 char *name; 1538 const char *suffix = NULL; 1539 struct mt_report_data *rdata; 1540 struct mt_application *mt_application = NULL; 1541 struct hid_report *report; 1542 int ret; 1543 1544 list_for_each_entry(report, &hi->reports, hidinput_list) { 1545 rdata = mt_find_report_data(td, report); 1546 if (!rdata) { 1547 hid_err(hdev, "failed to allocate data for report\n"); 1548 return -ENOMEM; 1549 } 1550 1551 mt_application = rdata->application; 1552 1553 if (rdata->is_mt_collection) { 1554 ret = mt_touch_input_configured(hdev, hi, 1555 mt_application); 1556 if (ret) 1557 return ret; 1558 } 1559 } 1560 1561 switch (hi->application) { 1562 case HID_GD_KEYBOARD: 1563 case HID_GD_KEYPAD: 1564 case HID_GD_MOUSE: 1565 case HID_DG_TOUCHPAD: 1566 case HID_GD_SYSTEM_CONTROL: 1567 case HID_CP_CONSUMER_CONTROL: 1568 case HID_GD_WIRELESS_RADIO_CTLS: 1569 case HID_GD_SYSTEM_MULTIAXIS: 1570 /* already handled by hid core */ 1571 break; 1572 case HID_DG_TOUCHSCREEN: 1573 /* we do not set suffix = "Touchscreen" */ 1574 hi->input->name = hdev->name; 1575 break; 1576 case HID_DG_STYLUS: 1577 /* force BTN_STYLUS to allow tablet matching in udev */ 1578 __set_bit(BTN_STYLUS, hi->input->keybit); 1579 break; 1580 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1581 suffix = "Custom Media Keys"; 1582 break; 1583 case HID_DG_PEN: 1584 suffix = "Stylus"; 1585 break; 1586 default: 1587 suffix = "UNKNOWN"; 1588 break; 1589 } 1590 1591 if (suffix) { 1592 name = devm_kzalloc(&hi->input->dev, 1593 strlen(hdev->name) + strlen(suffix) + 2, 1594 GFP_KERNEL); 1595 if (name) { 1596 sprintf(name, "%s %s", hdev->name, suffix); 1597 hi->input->name = name; 1598 } 1599 } 1600 1601 return 0; 1602 } 1603 1604 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1605 { 1606 if (field->usage[0].hid != usage || 1607 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1608 return; 1609 1610 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1611 field->flags |= HID_MAIN_ITEM_VARIABLE; 1612 } 1613 1614 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1615 { 1616 struct hid_report *report; 1617 int i; 1618 1619 list_for_each_entry(report, 1620 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1621 list) { 1622 1623 if (!report->maxfield) 1624 continue; 1625 1626 for (i = 0; i < report->maxfield; i++) 1627 if (report->field[i]->maxusage >= 1) 1628 mt_fix_const_field(report->field[i], usage); 1629 } 1630 } 1631 1632 static void mt_release_contacts(struct hid_device *hid) 1633 { 1634 struct hid_input *hidinput; 1635 struct mt_application *application; 1636 struct mt_device *td = hid_get_drvdata(hid); 1637 1638 list_for_each_entry(hidinput, &hid->inputs, list) { 1639 struct input_dev *input_dev = hidinput->input; 1640 struct input_mt *mt = input_dev->mt; 1641 int i; 1642 1643 if (mt) { 1644 for (i = 0; i < mt->num_slots; i++) { 1645 input_mt_slot(input_dev, i); 1646 input_mt_report_slot_inactive(input_dev); 1647 } 1648 input_mt_sync_frame(input_dev); 1649 input_sync(input_dev); 1650 } 1651 } 1652 1653 list_for_each_entry(application, &td->applications, list) { 1654 application->num_received = 0; 1655 } 1656 } 1657 1658 static void mt_expired_timeout(struct timer_list *t) 1659 { 1660 struct mt_device *td = from_timer(td, t, release_timer); 1661 struct hid_device *hdev = td->hdev; 1662 1663 /* 1664 * An input report came in just before we release the sticky fingers, 1665 * it will take care of the sticky fingers. 1666 */ 1667 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1668 return; 1669 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1670 mt_release_contacts(hdev); 1671 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1672 } 1673 1674 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1675 { 1676 int ret, i; 1677 struct mt_device *td; 1678 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1679 1680 for (i = 0; mt_classes[i].name ; i++) { 1681 if (id->driver_data == mt_classes[i].name) { 1682 mtclass = &(mt_classes[i]); 1683 break; 1684 } 1685 } 1686 1687 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1688 if (!td) { 1689 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1690 return -ENOMEM; 1691 } 1692 td->hdev = hdev; 1693 td->mtclass = *mtclass; 1694 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1695 hid_set_drvdata(hdev, td); 1696 1697 INIT_LIST_HEAD(&td->applications); 1698 INIT_LIST_HEAD(&td->reports); 1699 1700 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1701 td->serial_maybe = true; 1702 1703 /* This allows the driver to correctly support devices 1704 * that emit events over several HID messages. 1705 */ 1706 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1707 1708 /* 1709 * This allows the driver to handle different input sensors 1710 * that emits events through different applications on the same HID 1711 * device. 1712 */ 1713 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1714 1715 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1716 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1717 1718 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1719 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1720 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1721 } 1722 1723 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1724 1725 ret = hid_parse(hdev); 1726 if (ret != 0) 1727 return ret; 1728 1729 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1730 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1731 1732 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1733 if (ret) 1734 return ret; 1735 1736 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1737 if (ret) 1738 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1739 hdev->name); 1740 1741 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1742 1743 return 0; 1744 } 1745 1746 #ifdef CONFIG_PM 1747 static int mt_reset_resume(struct hid_device *hdev) 1748 { 1749 mt_release_contacts(hdev); 1750 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1751 return 0; 1752 } 1753 1754 static int mt_resume(struct hid_device *hdev) 1755 { 1756 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1757 * It should be safe to send it to other devices too. 1758 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1759 1760 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1761 1762 return 0; 1763 } 1764 #endif 1765 1766 static void mt_remove(struct hid_device *hdev) 1767 { 1768 struct mt_device *td = hid_get_drvdata(hdev); 1769 1770 del_timer_sync(&td->release_timer); 1771 1772 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1773 hid_hw_stop(hdev); 1774 } 1775 1776 /* 1777 * This list contains only: 1778 * - VID/PID of products not working with the default multitouch handling 1779 * - 2 generic rules. 1780 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1781 */ 1782 static const struct hid_device_id mt_devices[] = { 1783 1784 /* 3M panels */ 1785 { .driver_data = MT_CLS_3M, 1786 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1787 USB_DEVICE_ID_3M1968) }, 1788 { .driver_data = MT_CLS_3M, 1789 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1790 USB_DEVICE_ID_3M2256) }, 1791 { .driver_data = MT_CLS_3M, 1792 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1793 USB_DEVICE_ID_3M3266) }, 1794 1795 /* Anton devices */ 1796 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1797 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1798 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1799 1800 /* Asus T304UA */ 1801 { .driver_data = MT_CLS_ASUS, 1802 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1803 USB_VENDOR_ID_ASUSTEK, 1804 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1805 1806 /* Atmel panels */ 1807 { .driver_data = MT_CLS_SERIAL, 1808 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1809 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1810 1811 /* Baanto multitouch devices */ 1812 { .driver_data = MT_CLS_NSMU, 1813 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1814 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1815 1816 /* Cando panels */ 1817 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1818 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1819 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1820 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1821 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1822 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1823 1824 /* Chunghwa Telecom touch panels */ 1825 { .driver_data = MT_CLS_NSMU, 1826 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1827 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1828 1829 /* CJTouch panels */ 1830 { .driver_data = MT_CLS_NSMU, 1831 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1832 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1833 { .driver_data = MT_CLS_NSMU, 1834 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1835 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1836 1837 /* CVTouch panels */ 1838 { .driver_data = MT_CLS_NSMU, 1839 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1840 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1841 1842 /* eGalax devices (resistive) */ 1843 { .driver_data = MT_CLS_EGALAX, 1844 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1845 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1846 { .driver_data = MT_CLS_EGALAX, 1847 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1848 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1849 1850 /* eGalax devices (capacitive) */ 1851 { .driver_data = MT_CLS_EGALAX_SERIAL, 1852 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1853 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1854 { .driver_data = MT_CLS_EGALAX, 1855 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1856 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1857 { .driver_data = MT_CLS_EGALAX_SERIAL, 1858 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1859 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1860 { .driver_data = MT_CLS_EGALAX_SERIAL, 1861 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1862 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1863 { .driver_data = MT_CLS_EGALAX_SERIAL, 1864 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1865 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1866 { .driver_data = MT_CLS_EGALAX_SERIAL, 1867 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1868 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1869 { .driver_data = MT_CLS_EGALAX, 1870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1872 { .driver_data = MT_CLS_EGALAX, 1873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1875 { .driver_data = MT_CLS_EGALAX_SERIAL, 1876 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1877 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1878 { .driver_data = MT_CLS_EGALAX, 1879 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1880 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1881 { .driver_data = MT_CLS_EGALAX, 1882 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1883 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1884 { .driver_data = MT_CLS_EGALAX, 1885 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1886 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1887 { .driver_data = MT_CLS_EGALAX, 1888 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1889 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1890 { .driver_data = MT_CLS_EGALAX_SERIAL, 1891 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1892 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1893 { .driver_data = MT_CLS_EGALAX_SERIAL, 1894 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1895 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1896 { .driver_data = MT_CLS_EGALAX_SERIAL, 1897 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1898 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1899 { .driver_data = MT_CLS_EGALAX, 1900 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1901 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 1902 1903 /* Elan devices */ 1904 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1905 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1906 USB_VENDOR_ID_ELAN, 0x313a) }, 1907 1908 /* Elitegroup panel */ 1909 { .driver_data = MT_CLS_SERIAL, 1910 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1911 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1912 1913 /* Flatfrog Panels */ 1914 { .driver_data = MT_CLS_FLATFROG, 1915 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1916 USB_DEVICE_ID_MULTITOUCH_3200) }, 1917 1918 /* FocalTech Panels */ 1919 { .driver_data = MT_CLS_SERIAL, 1920 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1921 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1922 1923 /* GeneralTouch panel */ 1924 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1925 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1926 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1927 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1928 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1929 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1930 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1931 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1932 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1933 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1934 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1935 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1936 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1937 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1938 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1939 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1940 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1941 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1942 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1943 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1944 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1945 1946 /* Gametel game controller */ 1947 { .driver_data = MT_CLS_NSMU, 1948 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1949 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1950 1951 /* GoodTouch panels */ 1952 { .driver_data = MT_CLS_NSMU, 1953 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1954 USB_DEVICE_ID_GOODTOUCH_000f) }, 1955 1956 /* Hanvon panels */ 1957 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1958 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1959 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1960 1961 /* Ilitek dual touch panel */ 1962 { .driver_data = MT_CLS_NSMU, 1963 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1964 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1965 1966 /* LG Melfas panel */ 1967 { .driver_data = MT_CLS_LG, 1968 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1969 USB_DEVICE_ID_LG_MELFAS_MT) }, 1970 { .driver_data = MT_CLS_LG, 1971 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 1972 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 1973 1974 /* MosArt panels */ 1975 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1976 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1977 USB_DEVICE_ID_ASUS_T91MT)}, 1978 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1979 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1980 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1981 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1982 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1983 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1984 1985 /* Novatek Panel */ 1986 { .driver_data = MT_CLS_NSMU, 1987 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1988 USB_DEVICE_ID_NOVATEK_PCT) }, 1989 1990 /* Ntrig Panel */ 1991 { .driver_data = MT_CLS_NSMU, 1992 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1993 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1994 1995 /* Panasonic panels */ 1996 { .driver_data = MT_CLS_PANASONIC, 1997 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1998 USB_DEVICE_ID_PANABOARD_UBT780) }, 1999 { .driver_data = MT_CLS_PANASONIC, 2000 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2001 USB_DEVICE_ID_PANABOARD_UBT880) }, 2002 2003 /* PixArt optical touch screen */ 2004 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2005 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2006 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2007 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2008 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2009 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2010 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2011 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2012 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2013 2014 /* PixCir-based panels */ 2015 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2016 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2017 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2018 2019 /* Quanta-based panels */ 2020 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2021 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2022 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2023 2024 /* Razer touchpads */ 2025 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2026 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2027 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2028 2029 /* Smart Tech panels */ 2030 { .driver_data = MT_CLS_SMART_TECH, 2031 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2032 2033 /* Stantum panels */ 2034 { .driver_data = MT_CLS_CONFIDENCE, 2035 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2036 USB_DEVICE_ID_MTP_STM)}, 2037 2038 /* Synaptics devices */ 2039 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2040 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2041 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2042 2043 /* TopSeed panels */ 2044 { .driver_data = MT_CLS_TOPSEED, 2045 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2046 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2047 2048 /* Touch International panels */ 2049 { .driver_data = MT_CLS_NSMU, 2050 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2051 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2052 2053 /* Unitec panels */ 2054 { .driver_data = MT_CLS_NSMU, 2055 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2056 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2057 { .driver_data = MT_CLS_NSMU, 2058 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2059 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2060 2061 /* VTL panels */ 2062 { .driver_data = MT_CLS_VTL, 2063 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2064 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2065 2066 /* Wistron panels */ 2067 { .driver_data = MT_CLS_NSMU, 2068 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2069 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2070 2071 /* XAT */ 2072 { .driver_data = MT_CLS_NSMU, 2073 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2074 USB_DEVICE_ID_XAT_CSR) }, 2075 2076 /* Xiroku */ 2077 { .driver_data = MT_CLS_NSMU, 2078 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2079 USB_DEVICE_ID_XIROKU_SPX) }, 2080 { .driver_data = MT_CLS_NSMU, 2081 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2082 USB_DEVICE_ID_XIROKU_MPX) }, 2083 { .driver_data = MT_CLS_NSMU, 2084 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2085 USB_DEVICE_ID_XIROKU_CSR) }, 2086 { .driver_data = MT_CLS_NSMU, 2087 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2088 USB_DEVICE_ID_XIROKU_SPX1) }, 2089 { .driver_data = MT_CLS_NSMU, 2090 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2091 USB_DEVICE_ID_XIROKU_MPX1) }, 2092 { .driver_data = MT_CLS_NSMU, 2093 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2094 USB_DEVICE_ID_XIROKU_CSR1) }, 2095 { .driver_data = MT_CLS_NSMU, 2096 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2097 USB_DEVICE_ID_XIROKU_SPX2) }, 2098 { .driver_data = MT_CLS_NSMU, 2099 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2100 USB_DEVICE_ID_XIROKU_MPX2) }, 2101 { .driver_data = MT_CLS_NSMU, 2102 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2103 USB_DEVICE_ID_XIROKU_CSR2) }, 2104 2105 /* Google MT devices */ 2106 { .driver_data = MT_CLS_GOOGLE, 2107 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2108 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2109 2110 /* Generic MT device */ 2111 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2112 2113 /* Generic Win 8 certified MT device */ 2114 { .driver_data = MT_CLS_WIN_8, 2115 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2116 HID_ANY_ID, HID_ANY_ID) }, 2117 { } 2118 }; 2119 MODULE_DEVICE_TABLE(hid, mt_devices); 2120 2121 static const struct hid_usage_id mt_grabbed_usages[] = { 2122 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2123 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2124 }; 2125 2126 static struct hid_driver mt_driver = { 2127 .name = "hid-multitouch", 2128 .id_table = mt_devices, 2129 .probe = mt_probe, 2130 .remove = mt_remove, 2131 .input_mapping = mt_input_mapping, 2132 .input_mapped = mt_input_mapped, 2133 .input_configured = mt_input_configured, 2134 .feature_mapping = mt_feature_mapping, 2135 .usage_table = mt_grabbed_usages, 2136 .event = mt_event, 2137 .report = mt_report, 2138 #ifdef CONFIG_PM 2139 .reset_resume = mt_reset_resume, 2140 .resume = mt_resume, 2141 #endif 2142 }; 2143 module_hid_driver(mt_driver); 2144