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 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 74 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 75 76 #define MT_INPUTMODE_TOUCHSCREEN 0x02 77 #define MT_INPUTMODE_TOUCHPAD 0x03 78 79 #define MT_BUTTONTYPE_CLICKPAD 0 80 81 enum latency_mode { 82 HID_LATENCY_NORMAL = 0, 83 HID_LATENCY_HIGH = 1, 84 }; 85 86 #define MT_IO_FLAGS_RUNNING 0 87 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 88 #define MT_IO_FLAGS_PENDING_SLOTS 2 89 90 static const bool mtrue = true; /* default for true */ 91 static const bool mfalse; /* default for false */ 92 static const __s32 mzero; /* default for 0 */ 93 94 #define DEFAULT_TRUE ((void *)&mtrue) 95 #define DEFAULT_FALSE ((void *)&mfalse) 96 #define DEFAULT_ZERO ((void *)&mzero) 97 98 struct mt_usages { 99 struct list_head list; 100 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 101 __s32 *contactid; /* the device ContactID assigned to this slot */ 102 bool *tip_state; /* is the touch valid? */ 103 bool *inrange_state; /* is the finger in proximity of the sensor? */ 104 bool *confidence_state; /* is the touch made by a finger? */ 105 }; 106 107 struct mt_application { 108 struct list_head list; 109 unsigned int application; 110 unsigned int report_id; 111 struct list_head mt_usages; /* mt usages list */ 112 113 __s32 quirks; 114 115 __s32 *scantime; /* scantime reported */ 116 __s32 scantime_logical_max; /* max value for raw scantime */ 117 118 __s32 *raw_cc; /* contact count in the report */ 119 int left_button_state; /* left button state */ 120 unsigned int mt_flags; /* flags to pass to input-mt */ 121 122 unsigned long *pending_palm_slots; /* slots where we reported palm 123 * and need to release */ 124 125 __u8 num_received; /* how many contacts we received */ 126 __u8 num_expected; /* expected last contact index */ 127 __u8 buttons_count; /* number of physical buttons per touchpad */ 128 __u8 touches_by_report; /* how many touches are present in one report: 129 * 1 means we should use a serial protocol 130 * > 1 means hybrid (multitouch) protocol 131 */ 132 133 __s32 dev_time; /* the scan time provided by the device */ 134 unsigned long jiffies; /* the frame's jiffies */ 135 int timestamp; /* the timestamp to be sent */ 136 int prev_scantime; /* scantime reported previously */ 137 138 bool have_contact_count; 139 }; 140 141 struct mt_class { 142 __s32 name; /* MT_CLS */ 143 __s32 quirks; 144 __s32 sn_move; /* Signal/noise ratio for move events */ 145 __s32 sn_width; /* Signal/noise ratio for width events */ 146 __s32 sn_height; /* Signal/noise ratio for height events */ 147 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 148 __u8 maxcontacts; 149 bool is_indirect; /* true for touchpads */ 150 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 151 }; 152 153 struct mt_report_data { 154 struct list_head list; 155 struct hid_report *report; 156 struct mt_application *application; 157 bool is_mt_collection; 158 }; 159 160 struct mt_device { 161 struct mt_class mtclass; /* our mt device class */ 162 struct timer_list release_timer; /* to release sticky fingers */ 163 struct hid_device *hdev; /* hid_device we're attached to */ 164 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 165 __u8 inputmode_value; /* InputMode HID feature value */ 166 __u8 maxcontacts; 167 bool is_buttonpad; /* is this device a button pad? */ 168 bool serial_maybe; /* need to check for serial protocol */ 169 170 struct list_head applications; 171 struct list_head reports; 172 }; 173 174 static void mt_post_parse_default_settings(struct mt_device *td, 175 struct mt_application *app); 176 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 177 178 /* classes of device behavior */ 179 #define MT_CLS_DEFAULT 0x0001 180 181 #define MT_CLS_SERIAL 0x0002 182 #define MT_CLS_CONFIDENCE 0x0003 183 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 184 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 185 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 186 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 187 /* reserved 0x0008 */ 188 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 189 #define MT_CLS_NSMU 0x000a 190 /* reserved 0x0010 */ 191 /* reserved 0x0011 */ 192 #define MT_CLS_WIN_8 0x0012 193 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 194 /* reserved 0x0014 */ 195 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 196 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 197 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 198 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 199 200 /* vendor specific classes */ 201 #define MT_CLS_3M 0x0101 202 /* reserved 0x0102 */ 203 #define MT_CLS_EGALAX 0x0103 204 #define MT_CLS_EGALAX_SERIAL 0x0104 205 #define MT_CLS_TOPSEED 0x0105 206 #define MT_CLS_PANASONIC 0x0106 207 #define MT_CLS_FLATFROG 0x0107 208 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 209 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 210 #define MT_CLS_LG 0x010a 211 #define MT_CLS_ASUS 0x010b 212 #define MT_CLS_VTL 0x0110 213 #define MT_CLS_GOOGLE 0x0111 214 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 215 #define MT_CLS_SMART_TECH 0x0113 216 217 #define MT_DEFAULT_MAXCONTACT 10 218 #define MT_MAX_MAXCONTACT 250 219 220 /* 221 * Resync device and local timestamps after that many microseconds without 222 * receiving data. 223 */ 224 #define MAX_TIMESTAMP_INTERVAL 1000000 225 226 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 227 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 228 229 /* 230 * these device-dependent functions determine what slot corresponds 231 * to a valid contact that was just read. 232 */ 233 234 static int cypress_compute_slot(struct mt_application *application, 235 struct mt_usages *slot) 236 { 237 if (*slot->contactid != 0 || application->num_received == 0) 238 return *slot->contactid; 239 else 240 return -1; 241 } 242 243 static const struct mt_class mt_classes[] = { 244 { .name = MT_CLS_DEFAULT, 245 .quirks = MT_QUIRK_ALWAYS_VALID | 246 MT_QUIRK_CONTACT_CNT_ACCURATE }, 247 { .name = MT_CLS_NSMU, 248 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 249 { .name = MT_CLS_SERIAL, 250 .quirks = MT_QUIRK_ALWAYS_VALID}, 251 { .name = MT_CLS_CONFIDENCE, 252 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 253 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 254 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 255 MT_QUIRK_SLOT_IS_CONTACTID }, 256 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 257 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 258 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 259 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 260 .quirks = MT_QUIRK_VALID_IS_INRANGE | 261 MT_QUIRK_SLOT_IS_CONTACTID, 262 .maxcontacts = 2 }, 263 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 264 .quirks = MT_QUIRK_VALID_IS_INRANGE | 265 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 266 .maxcontacts = 2 }, 267 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 268 .quirks = MT_QUIRK_VALID_IS_INRANGE | 269 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 270 { .name = MT_CLS_WIN_8, 271 .quirks = MT_QUIRK_ALWAYS_VALID | 272 MT_QUIRK_IGNORE_DUPLICATES | 273 MT_QUIRK_HOVERING | 274 MT_QUIRK_CONTACT_CNT_ACCURATE | 275 MT_QUIRK_STICKY_FINGERS | 276 MT_QUIRK_WIN8_PTP_BUTTONS, 277 .export_all_inputs = true }, 278 { .name = MT_CLS_EXPORT_ALL_INPUTS, 279 .quirks = MT_QUIRK_ALWAYS_VALID | 280 MT_QUIRK_CONTACT_CNT_ACCURATE, 281 .export_all_inputs = true }, 282 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 283 .quirks = MT_QUIRK_ALWAYS_VALID | 284 MT_QUIRK_IGNORE_DUPLICATES | 285 MT_QUIRK_HOVERING | 286 MT_QUIRK_CONTACT_CNT_ACCURATE | 287 MT_QUIRK_STICKY_FINGERS | 288 MT_QUIRK_WIN8_PTP_BUTTONS | 289 MT_QUIRK_FORCE_MULTI_INPUT, 290 .export_all_inputs = true }, 291 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 292 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 293 MT_QUIRK_HOVERING | 294 MT_QUIRK_CONTACT_CNT_ACCURATE | 295 MT_QUIRK_STICKY_FINGERS | 296 MT_QUIRK_WIN8_PTP_BUTTONS | 297 MT_QUIRK_FORCE_MULTI_INPUT | 298 MT_QUIRK_NOT_SEEN_MEANS_UP, 299 .export_all_inputs = true }, 300 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 301 .quirks = MT_QUIRK_ALWAYS_VALID | 302 MT_QUIRK_IGNORE_DUPLICATES | 303 MT_QUIRK_HOVERING | 304 MT_QUIRK_CONTACT_CNT_ACCURATE | 305 MT_QUIRK_STICKY_FINGERS | 306 MT_QUIRK_WIN8_PTP_BUTTONS | 307 MT_QUIRK_DISABLE_WAKEUP, 308 .export_all_inputs = true }, 309 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 310 .quirks = MT_QUIRK_ALWAYS_VALID | 311 MT_QUIRK_IGNORE_DUPLICATES | 312 MT_QUIRK_HOVERING | 313 MT_QUIRK_CONTACT_CNT_ACCURATE | 314 MT_QUIRK_WIN8_PTP_BUTTONS, 315 .export_all_inputs = true }, 316 317 /* 318 * vendor specific classes 319 */ 320 { .name = MT_CLS_3M, 321 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 322 MT_QUIRK_SLOT_IS_CONTACTID | 323 MT_QUIRK_TOUCH_SIZE_SCALING, 324 .sn_move = 2048, 325 .sn_width = 128, 326 .sn_height = 128, 327 .maxcontacts = 60, 328 }, 329 { .name = MT_CLS_EGALAX, 330 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 331 MT_QUIRK_VALID_IS_INRANGE, 332 .sn_move = 4096, 333 .sn_pressure = 32, 334 }, 335 { .name = MT_CLS_EGALAX_SERIAL, 336 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 337 MT_QUIRK_ALWAYS_VALID, 338 .sn_move = 4096, 339 .sn_pressure = 32, 340 }, 341 { .name = MT_CLS_TOPSEED, 342 .quirks = MT_QUIRK_ALWAYS_VALID, 343 .is_indirect = true, 344 .maxcontacts = 2, 345 }, 346 { .name = MT_CLS_PANASONIC, 347 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 348 .maxcontacts = 4 }, 349 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 350 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 351 MT_QUIRK_VALID_IS_INRANGE | 352 MT_QUIRK_SLOT_IS_CONTACTID, 353 .maxcontacts = 2 354 }, 355 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 356 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 357 MT_QUIRK_SLOT_IS_CONTACTID 358 }, 359 360 { .name = MT_CLS_FLATFROG, 361 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 362 MT_QUIRK_NO_AREA, 363 .sn_move = 2048, 364 .maxcontacts = 40, 365 }, 366 { .name = MT_CLS_LG, 367 .quirks = MT_QUIRK_ALWAYS_VALID | 368 MT_QUIRK_FIX_CONST_CONTACT_ID | 369 MT_QUIRK_IGNORE_DUPLICATES | 370 MT_QUIRK_HOVERING | 371 MT_QUIRK_CONTACT_CNT_ACCURATE }, 372 { .name = MT_CLS_ASUS, 373 .quirks = MT_QUIRK_ALWAYS_VALID | 374 MT_QUIRK_CONTACT_CNT_ACCURATE | 375 MT_QUIRK_ASUS_CUSTOM_UP }, 376 { .name = MT_CLS_VTL, 377 .quirks = MT_QUIRK_ALWAYS_VALID | 378 MT_QUIRK_CONTACT_CNT_ACCURATE | 379 MT_QUIRK_FORCE_GET_FEATURE, 380 }, 381 { .name = MT_CLS_GOOGLE, 382 .quirks = MT_QUIRK_ALWAYS_VALID | 383 MT_QUIRK_CONTACT_CNT_ACCURATE | 384 MT_QUIRK_SLOT_IS_CONTACTID | 385 MT_QUIRK_HOVERING 386 }, 387 { .name = MT_CLS_RAZER_BLADE_STEALTH, 388 .quirks = MT_QUIRK_ALWAYS_VALID | 389 MT_QUIRK_IGNORE_DUPLICATES | 390 MT_QUIRK_HOVERING | 391 MT_QUIRK_CONTACT_CNT_ACCURATE | 392 MT_QUIRK_WIN8_PTP_BUTTONS, 393 }, 394 { .name = MT_CLS_SMART_TECH, 395 .quirks = MT_QUIRK_ALWAYS_VALID | 396 MT_QUIRK_IGNORE_DUPLICATES | 397 MT_QUIRK_CONTACT_CNT_ACCURATE | 398 MT_QUIRK_SEPARATE_APP_REPORT, 399 }, 400 { } 401 }; 402 403 static ssize_t mt_show_quirks(struct device *dev, 404 struct device_attribute *attr, 405 char *buf) 406 { 407 struct hid_device *hdev = to_hid_device(dev); 408 struct mt_device *td = hid_get_drvdata(hdev); 409 410 return sprintf(buf, "%u\n", td->mtclass.quirks); 411 } 412 413 static ssize_t mt_set_quirks(struct device *dev, 414 struct device_attribute *attr, 415 const char *buf, size_t count) 416 { 417 struct hid_device *hdev = to_hid_device(dev); 418 struct mt_device *td = hid_get_drvdata(hdev); 419 struct mt_application *application; 420 421 unsigned long val; 422 423 if (kstrtoul(buf, 0, &val)) 424 return -EINVAL; 425 426 td->mtclass.quirks = val; 427 428 list_for_each_entry(application, &td->applications, list) { 429 application->quirks = val; 430 if (!application->have_contact_count) 431 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 432 } 433 434 return count; 435 } 436 437 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 438 439 static struct attribute *sysfs_attrs[] = { 440 &dev_attr_quirks.attr, 441 NULL 442 }; 443 444 static const struct attribute_group mt_attribute_group = { 445 .attrs = sysfs_attrs 446 }; 447 448 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 449 { 450 int ret; 451 u32 size = hid_report_len(report); 452 u8 *buf; 453 454 /* 455 * Do not fetch the feature report if the device has been explicitly 456 * marked as non-capable. 457 */ 458 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 459 return; 460 461 buf = hid_alloc_report_buf(report, GFP_KERNEL); 462 if (!buf) 463 return; 464 465 ret = hid_hw_raw_request(hdev, report->id, buf, size, 466 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 467 if (ret < 0) { 468 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 469 report->id); 470 } else { 471 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 472 size, 0); 473 if (ret) 474 dev_warn(&hdev->dev, "failed to report feature\n"); 475 } 476 477 kfree(buf); 478 } 479 480 static void mt_feature_mapping(struct hid_device *hdev, 481 struct hid_field *field, struct hid_usage *usage) 482 { 483 struct mt_device *td = hid_get_drvdata(hdev); 484 485 switch (usage->hid) { 486 case HID_DG_CONTACTMAX: 487 mt_get_feature(hdev, field->report); 488 489 td->maxcontacts = field->value[0]; 490 if (!td->maxcontacts && 491 field->logical_maximum <= MT_MAX_MAXCONTACT) 492 td->maxcontacts = field->logical_maximum; 493 if (td->mtclass.maxcontacts) 494 /* check if the maxcontacts is given by the class */ 495 td->maxcontacts = td->mtclass.maxcontacts; 496 497 break; 498 case HID_DG_BUTTONTYPE: 499 if (usage->usage_index >= field->report_count) { 500 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 501 break; 502 } 503 504 mt_get_feature(hdev, field->report); 505 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 506 td->is_buttonpad = true; 507 508 break; 509 case 0xff0000c5: 510 /* Retrieve the Win8 blob once to enable some devices */ 511 if (usage->usage_index == 0) 512 mt_get_feature(hdev, field->report); 513 break; 514 } 515 } 516 517 static void set_abs(struct input_dev *input, unsigned int code, 518 struct hid_field *field, int snratio) 519 { 520 int fmin = field->logical_minimum; 521 int fmax = field->logical_maximum; 522 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 523 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 524 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 525 } 526 527 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 528 struct mt_application *application) 529 { 530 struct mt_usages *usage; 531 532 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 533 if (!usage) 534 return NULL; 535 536 /* set some defaults so we do not need to check for null pointers */ 537 usage->x = DEFAULT_ZERO; 538 usage->y = DEFAULT_ZERO; 539 usage->cx = DEFAULT_ZERO; 540 usage->cy = DEFAULT_ZERO; 541 usage->p = DEFAULT_ZERO; 542 usage->w = DEFAULT_ZERO; 543 usage->h = DEFAULT_ZERO; 544 usage->a = DEFAULT_ZERO; 545 usage->contactid = DEFAULT_ZERO; 546 usage->tip_state = DEFAULT_FALSE; 547 usage->inrange_state = DEFAULT_FALSE; 548 usage->confidence_state = DEFAULT_TRUE; 549 550 list_add_tail(&usage->list, &application->mt_usages); 551 552 return usage; 553 } 554 555 static struct mt_application *mt_allocate_application(struct mt_device *td, 556 struct hid_report *report) 557 { 558 unsigned int application = report->application; 559 struct mt_application *mt_application; 560 561 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 562 GFP_KERNEL); 563 if (!mt_application) 564 return NULL; 565 566 mt_application->application = application; 567 INIT_LIST_HEAD(&mt_application->mt_usages); 568 569 if (application == HID_DG_TOUCHSCREEN) 570 mt_application->mt_flags |= INPUT_MT_DIRECT; 571 572 /* 573 * Model touchscreens providing buttons as touchpads. 574 */ 575 if (application == HID_DG_TOUCHPAD) { 576 mt_application->mt_flags |= INPUT_MT_POINTER; 577 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 578 } 579 580 mt_application->scantime = DEFAULT_ZERO; 581 mt_application->raw_cc = DEFAULT_ZERO; 582 mt_application->quirks = td->mtclass.quirks; 583 mt_application->report_id = report->id; 584 585 list_add_tail(&mt_application->list, &td->applications); 586 587 return mt_application; 588 } 589 590 static struct mt_application *mt_find_application(struct mt_device *td, 591 struct hid_report *report) 592 { 593 unsigned int application = report->application; 594 struct mt_application *tmp, *mt_application = NULL; 595 596 list_for_each_entry(tmp, &td->applications, list) { 597 if (application == tmp->application) { 598 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 599 tmp->report_id == report->id) { 600 mt_application = tmp; 601 break; 602 } 603 } 604 } 605 606 if (!mt_application) 607 mt_application = mt_allocate_application(td, report); 608 609 return mt_application; 610 } 611 612 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 613 struct hid_report *report) 614 { 615 struct mt_report_data *rdata; 616 struct hid_field *field; 617 int r, n; 618 619 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 620 if (!rdata) 621 return NULL; 622 623 rdata->report = report; 624 rdata->application = mt_find_application(td, report); 625 626 if (!rdata->application) { 627 devm_kfree(&td->hdev->dev, rdata); 628 return NULL; 629 } 630 631 for (r = 0; r < report->maxfield; r++) { 632 field = report->field[r]; 633 634 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 635 continue; 636 637 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 638 for (n = 0; n < field->report_count; n++) { 639 if (field->usage[n].hid == HID_DG_CONTACTID) { 640 rdata->is_mt_collection = true; 641 break; 642 } 643 } 644 } 645 } 646 647 list_add_tail(&rdata->list, &td->reports); 648 649 return rdata; 650 } 651 652 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 653 struct hid_report *report) 654 { 655 struct mt_report_data *tmp, *rdata = NULL; 656 657 list_for_each_entry(tmp, &td->reports, list) { 658 if (report == tmp->report) { 659 rdata = tmp; 660 break; 661 } 662 } 663 664 if (!rdata) 665 rdata = mt_allocate_report_data(td, report); 666 667 return rdata; 668 } 669 670 static void mt_store_field(struct hid_device *hdev, 671 struct mt_application *application, 672 __s32 *value, 673 size_t offset) 674 { 675 struct mt_usages *usage; 676 __s32 **target; 677 678 if (list_empty(&application->mt_usages)) 679 usage = mt_allocate_usage(hdev, application); 680 else 681 usage = list_last_entry(&application->mt_usages, 682 struct mt_usages, 683 list); 684 685 if (!usage) 686 return; 687 688 target = (__s32 **)((char *)usage + offset); 689 690 /* the value has already been filled, create a new slot */ 691 if (*target != DEFAULT_TRUE && 692 *target != DEFAULT_FALSE && 693 *target != DEFAULT_ZERO) { 694 if (usage->contactid == DEFAULT_ZERO || 695 usage->x == DEFAULT_ZERO || 696 usage->y == DEFAULT_ZERO) { 697 hid_dbg(hdev, 698 "ignoring duplicate usage on incomplete"); 699 return; 700 } 701 usage = mt_allocate_usage(hdev, application); 702 if (!usage) 703 return; 704 705 target = (__s32 **)((char *)usage + offset); 706 } 707 708 *target = value; 709 } 710 711 #define MT_STORE_FIELD(__name) \ 712 mt_store_field(hdev, app, \ 713 &field->value[usage->usage_index], \ 714 offsetof(struct mt_usages, __name)) 715 716 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 717 struct hid_field *field, struct hid_usage *usage, 718 unsigned long **bit, int *max, struct mt_application *app) 719 { 720 struct mt_device *td = hid_get_drvdata(hdev); 721 struct mt_class *cls = &td->mtclass; 722 int code; 723 struct hid_usage *prev_usage = NULL; 724 725 /* 726 * Model touchscreens providing buttons as touchpads. 727 */ 728 if (field->application == HID_DG_TOUCHSCREEN && 729 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 730 app->mt_flags |= INPUT_MT_POINTER; 731 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 732 } 733 734 /* count the buttons on touchpads */ 735 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 736 app->buttons_count++; 737 738 if (usage->usage_index) 739 prev_usage = &field->usage[usage->usage_index - 1]; 740 741 switch (usage->hid & HID_USAGE_PAGE) { 742 743 case HID_UP_GENDESK: 744 switch (usage->hid) { 745 case HID_GD_X: 746 if (prev_usage && (prev_usage->hid == usage->hid)) { 747 code = ABS_MT_TOOL_X; 748 MT_STORE_FIELD(cx); 749 } else { 750 code = ABS_MT_POSITION_X; 751 MT_STORE_FIELD(x); 752 } 753 754 set_abs(hi->input, code, field, cls->sn_move); 755 756 /* 757 * A system multi-axis that exports X and Y has a high 758 * chance of being used directly on a surface 759 */ 760 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 761 __set_bit(INPUT_PROP_DIRECT, 762 hi->input->propbit); 763 input_set_abs_params(hi->input, 764 ABS_MT_TOOL_TYPE, 765 MT_TOOL_DIAL, 766 MT_TOOL_DIAL, 0, 0); 767 } 768 769 return 1; 770 case HID_GD_Y: 771 if (prev_usage && (prev_usage->hid == usage->hid)) { 772 code = ABS_MT_TOOL_Y; 773 MT_STORE_FIELD(cy); 774 } else { 775 code = ABS_MT_POSITION_Y; 776 MT_STORE_FIELD(y); 777 } 778 779 set_abs(hi->input, code, field, cls->sn_move); 780 781 return 1; 782 } 783 return 0; 784 785 case HID_UP_DIGITIZER: 786 switch (usage->hid) { 787 case HID_DG_INRANGE: 788 if (app->quirks & MT_QUIRK_HOVERING) { 789 input_set_abs_params(hi->input, 790 ABS_MT_DISTANCE, 0, 1, 0, 0); 791 } 792 MT_STORE_FIELD(inrange_state); 793 return 1; 794 case HID_DG_CONFIDENCE: 795 if ((cls->name == MT_CLS_WIN_8 || 796 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 797 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 798 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 799 (field->application == HID_DG_TOUCHPAD || 800 field->application == HID_DG_TOUCHSCREEN)) 801 app->quirks |= MT_QUIRK_CONFIDENCE; 802 803 if (app->quirks & MT_QUIRK_CONFIDENCE) 804 input_set_abs_params(hi->input, 805 ABS_MT_TOOL_TYPE, 806 MT_TOOL_FINGER, 807 MT_TOOL_PALM, 0, 0); 808 809 MT_STORE_FIELD(confidence_state); 810 return 1; 811 case HID_DG_TIPSWITCH: 812 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 813 input_set_capability(hi->input, 814 EV_KEY, BTN_TOUCH); 815 MT_STORE_FIELD(tip_state); 816 return 1; 817 case HID_DG_CONTACTID: 818 MT_STORE_FIELD(contactid); 819 app->touches_by_report++; 820 return 1; 821 case HID_DG_WIDTH: 822 if (!(app->quirks & MT_QUIRK_NO_AREA)) 823 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 824 cls->sn_width); 825 MT_STORE_FIELD(w); 826 return 1; 827 case HID_DG_HEIGHT: 828 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 829 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 830 cls->sn_height); 831 832 /* 833 * Only set ABS_MT_ORIENTATION if it is not 834 * already set by the HID_DG_AZIMUTH usage. 835 */ 836 if (!test_bit(ABS_MT_ORIENTATION, 837 hi->input->absbit)) 838 input_set_abs_params(hi->input, 839 ABS_MT_ORIENTATION, 0, 1, 0, 0); 840 } 841 MT_STORE_FIELD(h); 842 return 1; 843 case HID_DG_TIPPRESSURE: 844 set_abs(hi->input, ABS_MT_PRESSURE, field, 845 cls->sn_pressure); 846 MT_STORE_FIELD(p); 847 return 1; 848 case HID_DG_SCANTIME: 849 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 850 app->scantime = &field->value[usage->usage_index]; 851 app->scantime_logical_max = field->logical_maximum; 852 return 1; 853 case HID_DG_CONTACTCOUNT: 854 app->have_contact_count = true; 855 app->raw_cc = &field->value[usage->usage_index]; 856 return 1; 857 case HID_DG_AZIMUTH: 858 /* 859 * Azimuth has the range of [0, MAX) representing a full 860 * revolution. Set ABS_MT_ORIENTATION to a quarter of 861 * MAX according the definition of ABS_MT_ORIENTATION 862 */ 863 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 864 -field->logical_maximum / 4, 865 field->logical_maximum / 4, 866 cls->sn_move ? 867 field->logical_maximum / cls->sn_move : 0, 0); 868 MT_STORE_FIELD(a); 869 return 1; 870 case HID_DG_CONTACTMAX: 871 /* contact max are global to the report */ 872 return -1; 873 case HID_DG_TOUCH: 874 /* Legacy devices use TIPSWITCH and not TOUCH. 875 * Let's just ignore this field. */ 876 return -1; 877 } 878 /* let hid-input decide for the others */ 879 return 0; 880 881 case HID_UP_BUTTON: 882 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 883 /* 884 * MS PTP spec says that external buttons left and right have 885 * usages 2 and 3. 886 */ 887 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 888 field->application == HID_DG_TOUCHPAD && 889 (usage->hid & HID_USAGE) > 1) 890 code--; 891 892 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 893 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 894 895 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 896 if (!*bit) 897 return -1; 898 input_set_capability(hi->input, EV_KEY, code); 899 return 1; 900 901 case 0xff000000: 902 /* we do not want to map these: no input-oriented meaning */ 903 return -1; 904 } 905 906 return 0; 907 } 908 909 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 910 struct mt_usages *slot, 911 struct input_dev *input) 912 { 913 __s32 quirks = app->quirks; 914 915 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 916 return *slot->contactid; 917 918 if (quirks & MT_QUIRK_CYPRESS) 919 return cypress_compute_slot(app, slot); 920 921 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 922 return app->num_received; 923 924 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 925 return *slot->contactid - 1; 926 927 return input_mt_get_slot_by_key(input, *slot->contactid); 928 } 929 930 static void mt_release_pending_palms(struct mt_device *td, 931 struct mt_application *app, 932 struct input_dev *input) 933 { 934 int slotnum; 935 bool need_sync = false; 936 937 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 938 clear_bit(slotnum, app->pending_palm_slots); 939 940 input_mt_slot(input, slotnum); 941 input_mt_report_slot_inactive(input); 942 943 need_sync = true; 944 } 945 946 if (need_sync) { 947 input_mt_sync_frame(input); 948 input_sync(input); 949 } 950 } 951 952 /* 953 * this function is called when a whole packet has been received and processed, 954 * so that it can decide what to send to the input layer. 955 */ 956 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 957 struct input_dev *input) 958 { 959 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 960 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 961 962 input_mt_sync_frame(input); 963 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 964 input_sync(input); 965 966 mt_release_pending_palms(td, app, input); 967 968 app->num_received = 0; 969 app->left_button_state = 0; 970 971 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 972 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 973 else 974 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 975 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 976 } 977 978 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 979 { 980 long delta = value - app->prev_scantime; 981 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 982 983 app->jiffies = jiffies; 984 985 if (delta < 0) 986 delta += app->scantime_logical_max; 987 988 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 989 delta *= 100; 990 991 if (jdelta > MAX_TIMESTAMP_INTERVAL) 992 /* No data received for a while, resync the timestamp. */ 993 return 0; 994 else 995 return app->timestamp + delta; 996 } 997 998 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 999 struct hid_usage *usage, __s32 value) 1000 { 1001 /* we will handle the hidinput part later, now remains hiddev */ 1002 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1003 hid->hiddev_hid_event(hid, field, usage, value); 1004 1005 return 1; 1006 } 1007 1008 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1009 struct mt_application *app, 1010 struct mt_usages *slot) 1011 { 1012 struct input_mt *mt = input->mt; 1013 struct hid_device *hdev = td->hdev; 1014 __s32 quirks = app->quirks; 1015 bool valid = true; 1016 bool confidence_state = true; 1017 bool inrange_state = false; 1018 int active; 1019 int slotnum; 1020 int tool = MT_TOOL_FINGER; 1021 1022 if (!slot) 1023 return -EINVAL; 1024 1025 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1026 app->num_received >= app->num_expected) 1027 return -EAGAIN; 1028 1029 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1030 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1031 valid = *slot->inrange_state; 1032 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1033 valid = *slot->tip_state; 1034 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1035 valid = *slot->confidence_state; 1036 1037 if (!valid) 1038 return 0; 1039 } 1040 1041 slotnum = mt_compute_slot(td, app, slot, input); 1042 if (slotnum < 0 || slotnum >= td->maxcontacts) 1043 return 0; 1044 1045 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1046 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1047 1048 if (input_mt_is_active(i_slot) && 1049 input_mt_is_used(mt, i_slot)) 1050 return -EAGAIN; 1051 } 1052 1053 if (quirks & MT_QUIRK_CONFIDENCE) 1054 confidence_state = *slot->confidence_state; 1055 1056 if (quirks & MT_QUIRK_HOVERING) 1057 inrange_state = *slot->inrange_state; 1058 1059 active = *slot->tip_state || inrange_state; 1060 1061 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1062 tool = MT_TOOL_DIAL; 1063 else if (unlikely(!confidence_state)) { 1064 tool = MT_TOOL_PALM; 1065 if (!active && mt && 1066 input_mt_is_active(&mt->slots[slotnum])) { 1067 /* 1068 * The non-confidence was reported for 1069 * previously valid contact that is also no 1070 * longer valid. We can't simply report 1071 * lift-off as userspace will not be aware 1072 * of non-confidence, so we need to split 1073 * it into 2 events: active MT_TOOL_PALM 1074 * and a separate liftoff. 1075 */ 1076 active = true; 1077 set_bit(slotnum, app->pending_palm_slots); 1078 } 1079 } 1080 1081 input_mt_slot(input, slotnum); 1082 input_mt_report_slot_state(input, tool, active); 1083 if (active) { 1084 /* this finger is in proximity of the sensor */ 1085 int wide = (*slot->w > *slot->h); 1086 int major = max(*slot->w, *slot->h); 1087 int minor = min(*slot->w, *slot->h); 1088 int orientation = wide; 1089 int max_azimuth; 1090 int azimuth; 1091 int x; 1092 int y; 1093 int cx; 1094 int cy; 1095 1096 if (slot->a != DEFAULT_ZERO) { 1097 /* 1098 * Azimuth is counter-clockwise and ranges from [0, MAX) 1099 * (a full revolution). Convert it to clockwise ranging 1100 * [-MAX/2, MAX/2]. 1101 * 1102 * Note that ABS_MT_ORIENTATION require us to report 1103 * the limit of [-MAX/4, MAX/4], but the value can go 1104 * out of range to [-MAX/2, MAX/2] to report an upside 1105 * down ellipsis. 1106 */ 1107 azimuth = *slot->a; 1108 max_azimuth = input_abs_get_max(input, 1109 ABS_MT_ORIENTATION); 1110 if (azimuth > max_azimuth * 2) 1111 azimuth -= max_azimuth * 4; 1112 orientation = -azimuth; 1113 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1114 orientation = -orientation; 1115 1116 } 1117 1118 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1119 /* 1120 * divided by two to match visual scale of touch 1121 * for devices with this quirk 1122 */ 1123 major = major >> 1; 1124 minor = minor >> 1; 1125 } 1126 1127 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1128 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1129 *slot->x; 1130 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1131 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1132 *slot->y; 1133 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1134 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1135 *slot->cx; 1136 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1137 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1138 *slot->cy; 1139 1140 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1141 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1142 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1143 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1144 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1145 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1146 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1147 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1148 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1149 1150 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1151 } 1152 1153 return 0; 1154 } 1155 1156 static void mt_process_mt_event(struct hid_device *hid, 1157 struct mt_application *app, 1158 struct hid_field *field, 1159 struct hid_usage *usage, 1160 __s32 value, 1161 bool first_packet) 1162 { 1163 __s32 quirks = app->quirks; 1164 struct input_dev *input = field->hidinput->input; 1165 1166 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1167 return; 1168 1169 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1170 1171 /* 1172 * For Win8 PTP touchpads we should only look at 1173 * non finger/touch events in the first_packet of a 1174 * (possible) multi-packet frame. 1175 */ 1176 if (!first_packet) 1177 return; 1178 1179 /* 1180 * For Win8 PTP touchpads we map both the clickpad click 1181 * and any "external" left buttons to BTN_LEFT if a 1182 * device claims to have both we need to report 1 for 1183 * BTN_LEFT if either is pressed, so we or all values 1184 * together and report the result in mt_sync_frame(). 1185 */ 1186 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1187 app->left_button_state |= value; 1188 return; 1189 } 1190 } 1191 1192 input_event(input, usage->type, usage->code, value); 1193 } 1194 1195 static void mt_touch_report(struct hid_device *hid, 1196 struct mt_report_data *rdata) 1197 { 1198 struct mt_device *td = hid_get_drvdata(hid); 1199 struct hid_report *report = rdata->report; 1200 struct mt_application *app = rdata->application; 1201 struct hid_field *field; 1202 struct input_dev *input; 1203 struct mt_usages *slot; 1204 bool first_packet; 1205 unsigned count; 1206 int r, n; 1207 int scantime = 0; 1208 int contact_count = -1; 1209 1210 /* sticky fingers release in progress, abort */ 1211 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1212 return; 1213 1214 scantime = *app->scantime; 1215 app->timestamp = mt_compute_timestamp(app, scantime); 1216 if (app->raw_cc != DEFAULT_ZERO) 1217 contact_count = *app->raw_cc; 1218 1219 /* 1220 * Includes multi-packet support where subsequent 1221 * packets are sent with zero contactcount. 1222 */ 1223 if (contact_count >= 0) { 1224 /* 1225 * For Win8 PTPs the first packet (td->num_received == 0) may 1226 * have a contactcount of 0 if there only is a button event. 1227 * We double check that this is not a continuation packet 1228 * of a possible multi-packet frame be checking that the 1229 * timestamp has changed. 1230 */ 1231 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1232 app->num_received == 0 && 1233 app->prev_scantime != scantime) 1234 app->num_expected = contact_count; 1235 /* A non 0 contact count always indicates a first packet */ 1236 else if (contact_count) 1237 app->num_expected = contact_count; 1238 } 1239 app->prev_scantime = scantime; 1240 1241 first_packet = app->num_received == 0; 1242 1243 input = report->field[0]->hidinput->input; 1244 1245 list_for_each_entry(slot, &app->mt_usages, list) { 1246 if (!mt_process_slot(td, input, app, slot)) 1247 app->num_received++; 1248 } 1249 1250 for (r = 0; r < report->maxfield; r++) { 1251 field = report->field[r]; 1252 count = field->report_count; 1253 1254 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1255 continue; 1256 1257 for (n = 0; n < count; n++) 1258 mt_process_mt_event(hid, app, field, 1259 &field->usage[n], field->value[n], 1260 first_packet); 1261 } 1262 1263 if (app->num_received >= app->num_expected) 1264 mt_sync_frame(td, app, input); 1265 1266 /* 1267 * Windows 8 specs says 2 things: 1268 * - once a contact has been reported, it has to be reported in each 1269 * subsequent report 1270 * - the report rate when fingers are present has to be at least 1271 * the refresh rate of the screen, 60 or 120 Hz 1272 * 1273 * I interprete this that the specification forces a report rate of 1274 * at least 60 Hz for a touchscreen to be certified. 1275 * Which means that if we do not get a report whithin 16 ms, either 1276 * something wrong happens, either the touchscreen forgets to send 1277 * a release. Taking a reasonable margin allows to remove issues 1278 * with USB communication or the load of the machine. 1279 * 1280 * Given that Win 8 devices are forced to send a release, this will 1281 * only affect laggish machines and the ones that have a firmware 1282 * defect. 1283 */ 1284 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1285 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1286 mod_timer(&td->release_timer, 1287 jiffies + msecs_to_jiffies(100)); 1288 else 1289 del_timer(&td->release_timer); 1290 } 1291 1292 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1293 } 1294 1295 static int mt_touch_input_configured(struct hid_device *hdev, 1296 struct hid_input *hi, 1297 struct mt_application *app) 1298 { 1299 struct mt_device *td = hid_get_drvdata(hdev); 1300 struct mt_class *cls = &td->mtclass; 1301 struct input_dev *input = hi->input; 1302 int ret; 1303 1304 if (!td->maxcontacts) 1305 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1306 1307 mt_post_parse(td, app); 1308 if (td->serial_maybe) 1309 mt_post_parse_default_settings(td, app); 1310 1311 if (cls->is_indirect) 1312 app->mt_flags |= INPUT_MT_POINTER; 1313 1314 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1315 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1316 1317 /* check for clickpads */ 1318 if ((app->mt_flags & INPUT_MT_POINTER) && 1319 (app->buttons_count == 1)) 1320 td->is_buttonpad = true; 1321 1322 if (td->is_buttonpad) 1323 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1324 1325 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1326 BITS_TO_LONGS(td->maxcontacts), 1327 sizeof(long), 1328 GFP_KERNEL); 1329 if (!app->pending_palm_slots) 1330 return -ENOMEM; 1331 1332 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1333 if (ret) 1334 return ret; 1335 1336 app->mt_flags = 0; 1337 return 0; 1338 } 1339 1340 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1341 max, EV_KEY, (c)) 1342 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1343 struct hid_field *field, struct hid_usage *usage, 1344 unsigned long **bit, int *max) 1345 { 1346 struct mt_device *td = hid_get_drvdata(hdev); 1347 struct mt_application *application; 1348 struct mt_report_data *rdata; 1349 1350 rdata = mt_find_report_data(td, field->report); 1351 if (!rdata) { 1352 hid_err(hdev, "failed to allocate data for report\n"); 1353 return 0; 1354 } 1355 1356 application = rdata->application; 1357 1358 /* 1359 * If mtclass.export_all_inputs is not set, only map fields from 1360 * TouchScreen or TouchPad collections. We need to ignore fields 1361 * that belong to other collections such as Mouse that might have 1362 * the same GenericDesktop usages. 1363 */ 1364 if (!td->mtclass.export_all_inputs && 1365 field->application != HID_DG_TOUCHSCREEN && 1366 field->application != HID_DG_PEN && 1367 field->application != HID_DG_TOUCHPAD && 1368 field->application != HID_GD_KEYBOARD && 1369 field->application != HID_GD_SYSTEM_CONTROL && 1370 field->application != HID_CP_CONSUMER_CONTROL && 1371 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1372 field->application != HID_GD_SYSTEM_MULTIAXIS && 1373 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1374 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1375 return -1; 1376 1377 /* 1378 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1379 * touchpad report descriptor. We need to treat these as an array to 1380 * map usages to input keys. 1381 */ 1382 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1383 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1384 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1385 set_bit(EV_REP, hi->input->evbit); 1386 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1387 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1388 switch (usage->hid & HID_USAGE) { 1389 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1390 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1391 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1392 case 0x6b: mt_map_key_clear(KEY_F21); break; 1393 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1394 default: 1395 return -1; 1396 } 1397 return 1; 1398 } 1399 1400 if (rdata->is_mt_collection) 1401 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1402 application); 1403 1404 /* 1405 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1406 * for the stylus. Overwrite the hid_input application 1407 */ 1408 if (field->physical == HID_DG_STYLUS) 1409 hi->application = HID_DG_STYLUS; 1410 1411 /* let hid-core decide for the others */ 1412 return 0; 1413 } 1414 1415 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1416 struct hid_field *field, struct hid_usage *usage, 1417 unsigned long **bit, int *max) 1418 { 1419 struct mt_device *td = hid_get_drvdata(hdev); 1420 struct mt_report_data *rdata; 1421 1422 rdata = mt_find_report_data(td, field->report); 1423 if (rdata && rdata->is_mt_collection) { 1424 /* We own these mappings, tell hid-input to ignore them */ 1425 return -1; 1426 } 1427 1428 /* let hid-core decide for the others */ 1429 return 0; 1430 } 1431 1432 static int mt_event(struct hid_device *hid, struct hid_field *field, 1433 struct hid_usage *usage, __s32 value) 1434 { 1435 struct mt_device *td = hid_get_drvdata(hid); 1436 struct mt_report_data *rdata; 1437 1438 rdata = mt_find_report_data(td, field->report); 1439 if (rdata && rdata->is_mt_collection) 1440 return mt_touch_event(hid, field, usage, value); 1441 1442 return 0; 1443 } 1444 1445 static void mt_report(struct hid_device *hid, struct hid_report *report) 1446 { 1447 struct mt_device *td = hid_get_drvdata(hid); 1448 struct hid_field *field = report->field[0]; 1449 struct mt_report_data *rdata; 1450 1451 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1452 return; 1453 1454 rdata = mt_find_report_data(td, report); 1455 if (rdata && rdata->is_mt_collection) 1456 return mt_touch_report(hid, rdata); 1457 1458 if (field && field->hidinput && field->hidinput->input) 1459 input_sync(field->hidinput->input); 1460 } 1461 1462 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1463 struct hid_field *field, 1464 struct hid_usage *usage, 1465 enum latency_mode latency, 1466 bool surface_switch, 1467 bool button_switch, 1468 bool *inputmode_found) 1469 { 1470 struct mt_device *td = hid_get_drvdata(hdev); 1471 struct mt_class *cls = &td->mtclass; 1472 struct hid_report *report = field->report; 1473 unsigned int index = usage->usage_index; 1474 char *buf; 1475 u32 report_len; 1476 int max; 1477 1478 switch (usage->hid) { 1479 case HID_DG_INPUTMODE: 1480 /* 1481 * Some elan panels wrongly declare 2 input mode features, 1482 * and silently ignore when we set the value in the second 1483 * field. Skip the second feature and hope for the best. 1484 */ 1485 if (*inputmode_found) 1486 return false; 1487 1488 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1489 report_len = hid_report_len(report); 1490 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1491 if (!buf) { 1492 hid_err(hdev, 1493 "failed to allocate buffer for report\n"); 1494 return false; 1495 } 1496 hid_hw_raw_request(hdev, report->id, buf, report_len, 1497 HID_FEATURE_REPORT, 1498 HID_REQ_GET_REPORT); 1499 kfree(buf); 1500 } 1501 1502 field->value[index] = td->inputmode_value; 1503 *inputmode_found = true; 1504 return true; 1505 1506 case HID_DG_CONTACTMAX: 1507 if (cls->maxcontacts) { 1508 max = min_t(int, field->logical_maximum, 1509 cls->maxcontacts); 1510 if (field->value[index] != max) { 1511 field->value[index] = max; 1512 return true; 1513 } 1514 } 1515 break; 1516 1517 case HID_DG_LATENCYMODE: 1518 field->value[index] = latency; 1519 return true; 1520 1521 case HID_DG_SURFACESWITCH: 1522 field->value[index] = surface_switch; 1523 return true; 1524 1525 case HID_DG_BUTTONSWITCH: 1526 field->value[index] = button_switch; 1527 return true; 1528 } 1529 1530 return false; /* no need to update the report */ 1531 } 1532 1533 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1534 bool surface_switch, bool button_switch) 1535 { 1536 struct hid_report_enum *rep_enum; 1537 struct hid_report *rep; 1538 struct hid_usage *usage; 1539 int i, j; 1540 bool update_report; 1541 bool inputmode_found = false; 1542 1543 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1544 list_for_each_entry(rep, &rep_enum->report_list, list) { 1545 update_report = false; 1546 1547 for (i = 0; i < rep->maxfield; i++) { 1548 /* Ignore if report count is out of bounds. */ 1549 if (rep->field[i]->report_count < 1) 1550 continue; 1551 1552 for (j = 0; j < rep->field[i]->maxusage; j++) { 1553 usage = &rep->field[i]->usage[j]; 1554 1555 if (mt_need_to_apply_feature(hdev, 1556 rep->field[i], 1557 usage, 1558 latency, 1559 surface_switch, 1560 button_switch, 1561 &inputmode_found)) 1562 update_report = true; 1563 } 1564 } 1565 1566 if (update_report) 1567 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1568 } 1569 } 1570 1571 static void mt_post_parse_default_settings(struct mt_device *td, 1572 struct mt_application *app) 1573 { 1574 __s32 quirks = app->quirks; 1575 1576 /* unknown serial device needs special quirks */ 1577 if (list_is_singular(&app->mt_usages)) { 1578 quirks |= MT_QUIRK_ALWAYS_VALID; 1579 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1580 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1581 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1582 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1583 } 1584 1585 app->quirks = quirks; 1586 } 1587 1588 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1589 { 1590 if (!app->have_contact_count) 1591 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1592 } 1593 1594 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1595 { 1596 struct mt_device *td = hid_get_drvdata(hdev); 1597 const char *suffix = NULL; 1598 struct mt_report_data *rdata; 1599 struct mt_application *mt_application = NULL; 1600 struct hid_report *report; 1601 int ret; 1602 1603 list_for_each_entry(report, &hi->reports, hidinput_list) { 1604 rdata = mt_find_report_data(td, report); 1605 if (!rdata) { 1606 hid_err(hdev, "failed to allocate data for report\n"); 1607 return -ENOMEM; 1608 } 1609 1610 mt_application = rdata->application; 1611 1612 if (rdata->is_mt_collection) { 1613 ret = mt_touch_input_configured(hdev, hi, 1614 mt_application); 1615 if (ret) 1616 return ret; 1617 } 1618 } 1619 1620 switch (hi->application) { 1621 case HID_GD_KEYBOARD: 1622 case HID_GD_KEYPAD: 1623 case HID_GD_MOUSE: 1624 case HID_DG_TOUCHPAD: 1625 case HID_GD_SYSTEM_CONTROL: 1626 case HID_CP_CONSUMER_CONTROL: 1627 case HID_GD_WIRELESS_RADIO_CTLS: 1628 case HID_GD_SYSTEM_MULTIAXIS: 1629 /* already handled by hid core */ 1630 break; 1631 case HID_DG_TOUCHSCREEN: 1632 /* we do not set suffix = "Touchscreen" */ 1633 hi->input->name = hdev->name; 1634 break; 1635 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1636 suffix = "Custom Media Keys"; 1637 break; 1638 case HID_DG_STYLUS: 1639 /* force BTN_STYLUS to allow tablet matching in udev */ 1640 __set_bit(BTN_STYLUS, hi->input->keybit); 1641 break; 1642 default: 1643 suffix = "UNKNOWN"; 1644 break; 1645 } 1646 1647 if (suffix) 1648 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1649 "%s %s", hdev->name, suffix); 1650 1651 return 0; 1652 } 1653 1654 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1655 { 1656 if (field->usage[0].hid != usage || 1657 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1658 return; 1659 1660 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1661 field->flags |= HID_MAIN_ITEM_VARIABLE; 1662 } 1663 1664 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1665 { 1666 struct hid_report *report; 1667 int i; 1668 1669 list_for_each_entry(report, 1670 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1671 list) { 1672 1673 if (!report->maxfield) 1674 continue; 1675 1676 for (i = 0; i < report->maxfield; i++) 1677 if (report->field[i]->maxusage >= 1) 1678 mt_fix_const_field(report->field[i], usage); 1679 } 1680 } 1681 1682 static void mt_release_contacts(struct hid_device *hid) 1683 { 1684 struct hid_input *hidinput; 1685 struct mt_application *application; 1686 struct mt_device *td = hid_get_drvdata(hid); 1687 1688 list_for_each_entry(hidinput, &hid->inputs, list) { 1689 struct input_dev *input_dev = hidinput->input; 1690 struct input_mt *mt = input_dev->mt; 1691 int i; 1692 1693 if (mt) { 1694 for (i = 0; i < mt->num_slots; i++) { 1695 input_mt_slot(input_dev, i); 1696 input_mt_report_slot_inactive(input_dev); 1697 } 1698 input_mt_sync_frame(input_dev); 1699 input_sync(input_dev); 1700 } 1701 } 1702 1703 list_for_each_entry(application, &td->applications, list) { 1704 application->num_received = 0; 1705 } 1706 } 1707 1708 static void mt_expired_timeout(struct timer_list *t) 1709 { 1710 struct mt_device *td = from_timer(td, t, release_timer); 1711 struct hid_device *hdev = td->hdev; 1712 1713 /* 1714 * An input report came in just before we release the sticky fingers, 1715 * it will take care of the sticky fingers. 1716 */ 1717 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1718 return; 1719 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1720 mt_release_contacts(hdev); 1721 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1722 } 1723 1724 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1725 { 1726 int ret, i; 1727 struct mt_device *td; 1728 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1729 1730 for (i = 0; mt_classes[i].name ; i++) { 1731 if (id->driver_data == mt_classes[i].name) { 1732 mtclass = &(mt_classes[i]); 1733 break; 1734 } 1735 } 1736 1737 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1738 if (!td) { 1739 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1740 return -ENOMEM; 1741 } 1742 td->hdev = hdev; 1743 td->mtclass = *mtclass; 1744 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1745 hid_set_drvdata(hdev, td); 1746 1747 INIT_LIST_HEAD(&td->applications); 1748 INIT_LIST_HEAD(&td->reports); 1749 1750 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1751 td->serial_maybe = true; 1752 1753 1754 /* Orientation is inverted if the X or Y axes are 1755 * flipped, but normalized if both are inverted. 1756 */ 1757 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1758 !((hdev->quirks & HID_QUIRK_X_INVERT) 1759 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1760 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1761 1762 /* This allows the driver to correctly support devices 1763 * that emit events over several HID messages. 1764 */ 1765 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1766 1767 /* 1768 * This allows the driver to handle different input sensors 1769 * that emits events through different applications on the same HID 1770 * device. 1771 */ 1772 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1773 1774 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1775 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1776 1777 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1778 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1779 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1780 } 1781 1782 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1783 1784 ret = hid_parse(hdev); 1785 if (ret != 0) 1786 return ret; 1787 1788 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1789 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1790 1791 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1792 if (ret) 1793 return ret; 1794 1795 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1796 if (ret) 1797 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1798 hdev->name); 1799 1800 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1801 1802 return 0; 1803 } 1804 1805 #ifdef CONFIG_PM 1806 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1807 { 1808 struct mt_device *td = hid_get_drvdata(hdev); 1809 1810 /* High latency is desirable for power savings during S3/S0ix */ 1811 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1812 !hid_hw_may_wakeup(hdev)) 1813 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false); 1814 else 1815 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true); 1816 1817 return 0; 1818 } 1819 1820 static int mt_reset_resume(struct hid_device *hdev) 1821 { 1822 mt_release_contacts(hdev); 1823 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1824 return 0; 1825 } 1826 1827 static int mt_resume(struct hid_device *hdev) 1828 { 1829 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1830 * It should be safe to send it to other devices too. 1831 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1832 1833 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1834 1835 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1836 1837 return 0; 1838 } 1839 #endif 1840 1841 static void mt_remove(struct hid_device *hdev) 1842 { 1843 struct mt_device *td = hid_get_drvdata(hdev); 1844 1845 del_timer_sync(&td->release_timer); 1846 1847 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1848 hid_hw_stop(hdev); 1849 } 1850 1851 /* 1852 * This list contains only: 1853 * - VID/PID of products not working with the default multitouch handling 1854 * - 2 generic rules. 1855 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1856 */ 1857 static const struct hid_device_id mt_devices[] = { 1858 1859 /* 3M panels */ 1860 { .driver_data = MT_CLS_3M, 1861 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1862 USB_DEVICE_ID_3M1968) }, 1863 { .driver_data = MT_CLS_3M, 1864 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1865 USB_DEVICE_ID_3M2256) }, 1866 { .driver_data = MT_CLS_3M, 1867 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1868 USB_DEVICE_ID_3M3266) }, 1869 1870 /* Anton devices */ 1871 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1872 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1873 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1874 1875 /* Asus T101HA */ 1876 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 1877 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1878 USB_VENDOR_ID_ASUSTEK, 1879 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 1880 1881 /* Asus T304UA */ 1882 { .driver_data = MT_CLS_ASUS, 1883 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1884 USB_VENDOR_ID_ASUSTEK, 1885 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1886 1887 /* Atmel panels */ 1888 { .driver_data = MT_CLS_SERIAL, 1889 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1890 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1891 1892 /* Baanto multitouch devices */ 1893 { .driver_data = MT_CLS_NSMU, 1894 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1895 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1896 1897 /* Cando panels */ 1898 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1899 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1900 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1901 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1902 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1903 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1904 1905 /* Chunghwa Telecom touch panels */ 1906 { .driver_data = MT_CLS_NSMU, 1907 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1908 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1909 1910 /* CJTouch panels */ 1911 { .driver_data = MT_CLS_NSMU, 1912 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1913 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1914 { .driver_data = MT_CLS_NSMU, 1915 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1916 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1917 1918 /* CVTouch panels */ 1919 { .driver_data = MT_CLS_NSMU, 1920 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1921 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1922 1923 /* eGalax devices (SAW) */ 1924 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1925 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1926 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 1927 1928 /* eGalax devices (resistive) */ 1929 { .driver_data = MT_CLS_EGALAX, 1930 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1931 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1932 { .driver_data = MT_CLS_EGALAX, 1933 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1934 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1935 1936 /* eGalax devices (capacitive) */ 1937 { .driver_data = MT_CLS_EGALAX_SERIAL, 1938 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1939 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1940 { .driver_data = MT_CLS_EGALAX, 1941 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1942 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1943 { .driver_data = MT_CLS_EGALAX_SERIAL, 1944 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1945 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1946 { .driver_data = MT_CLS_EGALAX_SERIAL, 1947 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1948 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1949 { .driver_data = MT_CLS_EGALAX_SERIAL, 1950 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1951 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1952 { .driver_data = MT_CLS_EGALAX_SERIAL, 1953 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1954 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1955 { .driver_data = MT_CLS_EGALAX, 1956 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1957 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1958 { .driver_data = MT_CLS_EGALAX, 1959 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1960 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1961 { .driver_data = MT_CLS_EGALAX_SERIAL, 1962 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1963 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1964 { .driver_data = MT_CLS_EGALAX, 1965 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1966 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1967 { .driver_data = MT_CLS_EGALAX, 1968 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1969 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1970 { .driver_data = MT_CLS_EGALAX, 1971 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1972 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1973 { .driver_data = MT_CLS_EGALAX, 1974 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1975 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1976 { .driver_data = MT_CLS_EGALAX_SERIAL, 1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1979 { .driver_data = MT_CLS_EGALAX_SERIAL, 1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1982 { .driver_data = MT_CLS_EGALAX_SERIAL, 1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1985 { .driver_data = MT_CLS_EGALAX, 1986 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1987 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 1988 1989 /* Elan devices */ 1990 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1991 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1992 USB_VENDOR_ID_ELAN, 0x313a) }, 1993 1994 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 1995 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1996 USB_VENDOR_ID_ELAN, 0x3148) }, 1997 1998 /* Elitegroup panel */ 1999 { .driver_data = MT_CLS_SERIAL, 2000 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2001 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2002 2003 /* Flatfrog Panels */ 2004 { .driver_data = MT_CLS_FLATFROG, 2005 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2006 USB_DEVICE_ID_MULTITOUCH_3200) }, 2007 2008 /* FocalTech Panels */ 2009 { .driver_data = MT_CLS_SERIAL, 2010 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2011 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2012 2013 /* GeneralTouch panel */ 2014 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2015 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2016 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2017 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2018 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2019 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2020 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2021 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2022 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2023 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2024 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2025 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2026 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2027 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2028 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2029 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2030 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2031 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2032 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2033 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2034 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2035 2036 /* Gametel game controller */ 2037 { .driver_data = MT_CLS_NSMU, 2038 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2039 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2040 2041 /* GoodTouch panels */ 2042 { .driver_data = MT_CLS_NSMU, 2043 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2044 USB_DEVICE_ID_GOODTOUCH_000f) }, 2045 2046 /* Hanvon panels */ 2047 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2048 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2049 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2050 2051 /* HONOR GLO-GXXX panel */ 2052 { .driver_data = MT_CLS_VTL, 2053 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2054 0x347d, 0x7853) }, 2055 2056 /* Ilitek dual touch panel */ 2057 { .driver_data = MT_CLS_NSMU, 2058 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2059 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2060 2061 /* LG Melfas panel */ 2062 { .driver_data = MT_CLS_LG, 2063 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2064 USB_DEVICE_ID_LG_MELFAS_MT) }, 2065 { .driver_data = MT_CLS_LG, 2066 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2067 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2068 2069 /* Lenovo X1 TAB Gen 2 */ 2070 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2071 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2072 USB_VENDOR_ID_LENOVO, 2073 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2074 2075 /* Lenovo X1 TAB Gen 3 */ 2076 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2077 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2078 USB_VENDOR_ID_LENOVO, 2079 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2080 2081 /* Lenovo X12 TAB Gen 1 */ 2082 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2083 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2084 USB_VENDOR_ID_LENOVO, 2085 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2086 2087 /* MosArt panels */ 2088 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2089 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2090 USB_DEVICE_ID_ASUS_T91MT)}, 2091 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2092 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2093 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2094 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2095 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2096 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2097 2098 /* Novatek Panel */ 2099 { .driver_data = MT_CLS_NSMU, 2100 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2101 USB_DEVICE_ID_NOVATEK_PCT) }, 2102 2103 /* Ntrig Panel */ 2104 { .driver_data = MT_CLS_NSMU, 2105 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2106 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2107 2108 /* Panasonic panels */ 2109 { .driver_data = MT_CLS_PANASONIC, 2110 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2111 USB_DEVICE_ID_PANABOARD_UBT780) }, 2112 { .driver_data = MT_CLS_PANASONIC, 2113 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2114 USB_DEVICE_ID_PANABOARD_UBT880) }, 2115 2116 /* PixArt optical touch screen */ 2117 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2118 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2119 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2120 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2121 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2122 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2123 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2124 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2125 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2126 2127 /* PixCir-based panels */ 2128 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2129 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2130 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2131 2132 /* Quanta-based panels */ 2133 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2134 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2135 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2136 2137 /* Razer touchpads */ 2138 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2139 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2140 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2141 2142 /* Smart Tech panels */ 2143 { .driver_data = MT_CLS_SMART_TECH, 2144 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2145 2146 /* Stantum panels */ 2147 { .driver_data = MT_CLS_CONFIDENCE, 2148 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2149 USB_DEVICE_ID_MTP_STM)}, 2150 2151 /* Synaptics devices */ 2152 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2153 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2154 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2155 2156 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2157 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2158 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2159 2160 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2161 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2162 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2163 2164 /* TopSeed panels */ 2165 { .driver_data = MT_CLS_TOPSEED, 2166 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2167 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2168 2169 /* Touch International panels */ 2170 { .driver_data = MT_CLS_NSMU, 2171 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2172 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2173 2174 /* Unitec panels */ 2175 { .driver_data = MT_CLS_NSMU, 2176 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2177 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2178 { .driver_data = MT_CLS_NSMU, 2179 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2180 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2181 2182 /* VTL panels */ 2183 { .driver_data = MT_CLS_VTL, 2184 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2185 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2186 2187 /* Winbond Electronics Corp. */ 2188 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2189 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2190 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2191 2192 /* Wistron panels */ 2193 { .driver_data = MT_CLS_NSMU, 2194 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2195 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2196 2197 /* XAT */ 2198 { .driver_data = MT_CLS_NSMU, 2199 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2200 USB_DEVICE_ID_XAT_CSR) }, 2201 2202 /* Xiroku */ 2203 { .driver_data = MT_CLS_NSMU, 2204 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2205 USB_DEVICE_ID_XIROKU_SPX) }, 2206 { .driver_data = MT_CLS_NSMU, 2207 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2208 USB_DEVICE_ID_XIROKU_MPX) }, 2209 { .driver_data = MT_CLS_NSMU, 2210 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2211 USB_DEVICE_ID_XIROKU_CSR) }, 2212 { .driver_data = MT_CLS_NSMU, 2213 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2214 USB_DEVICE_ID_XIROKU_SPX1) }, 2215 { .driver_data = MT_CLS_NSMU, 2216 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2217 USB_DEVICE_ID_XIROKU_MPX1) }, 2218 { .driver_data = MT_CLS_NSMU, 2219 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2220 USB_DEVICE_ID_XIROKU_CSR1) }, 2221 { .driver_data = MT_CLS_NSMU, 2222 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2223 USB_DEVICE_ID_XIROKU_SPX2) }, 2224 { .driver_data = MT_CLS_NSMU, 2225 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2226 USB_DEVICE_ID_XIROKU_MPX2) }, 2227 { .driver_data = MT_CLS_NSMU, 2228 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2229 USB_DEVICE_ID_XIROKU_CSR2) }, 2230 2231 /* Google MT devices */ 2232 { .driver_data = MT_CLS_GOOGLE, 2233 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2234 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2235 { .driver_data = MT_CLS_GOOGLE, 2236 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2237 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2238 2239 /* Generic MT device */ 2240 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2241 2242 /* Generic Win 8 certified MT device */ 2243 { .driver_data = MT_CLS_WIN_8, 2244 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2245 HID_ANY_ID, HID_ANY_ID) }, 2246 { } 2247 }; 2248 MODULE_DEVICE_TABLE(hid, mt_devices); 2249 2250 static const struct hid_usage_id mt_grabbed_usages[] = { 2251 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2252 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2253 }; 2254 2255 static struct hid_driver mt_driver = { 2256 .name = "hid-multitouch", 2257 .id_table = mt_devices, 2258 .probe = mt_probe, 2259 .remove = mt_remove, 2260 .input_mapping = mt_input_mapping, 2261 .input_mapped = mt_input_mapped, 2262 .input_configured = mt_input_configured, 2263 .feature_mapping = mt_feature_mapping, 2264 .usage_table = mt_grabbed_usages, 2265 .event = mt_event, 2266 .report = mt_report, 2267 #ifdef CONFIG_PM 2268 .suspend = mt_suspend, 2269 .reset_resume = mt_reset_resume, 2270 .resume = mt_resume, 2271 #endif 2272 }; 2273 module_hid_driver(mt_driver); 2274