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 unsigned long jiffies; /* the frame's jiffies */ 134 int timestamp; /* the timestamp to be sent */ 135 int prev_scantime; /* scantime reported previously */ 136 137 bool have_contact_count; 138 }; 139 140 struct mt_class { 141 __s32 name; /* MT_CLS */ 142 __s32 quirks; 143 __s32 sn_move; /* Signal/noise ratio for move events */ 144 __s32 sn_width; /* Signal/noise ratio for width events */ 145 __s32 sn_height; /* Signal/noise ratio for height events */ 146 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 147 __u8 maxcontacts; 148 bool is_indirect; /* true for touchpads */ 149 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 150 }; 151 152 struct mt_report_data { 153 struct list_head list; 154 struct hid_report *report; 155 struct mt_application *application; 156 bool is_mt_collection; 157 }; 158 159 struct mt_device { 160 struct mt_class mtclass; /* our mt device class */ 161 struct timer_list release_timer; /* to release sticky fingers */ 162 struct hid_device *hdev; /* hid_device we're attached to */ 163 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 164 __u8 inputmode_value; /* InputMode HID feature value */ 165 __u8 maxcontacts; 166 bool is_buttonpad; /* is this device a button pad? */ 167 bool serial_maybe; /* need to check for serial protocol */ 168 169 struct list_head applications; 170 struct list_head reports; 171 }; 172 173 static void mt_post_parse_default_settings(struct mt_device *td, 174 struct mt_application *app); 175 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 176 177 /* classes of device behavior */ 178 #define MT_CLS_DEFAULT 0x0001 179 180 #define MT_CLS_SERIAL 0x0002 181 #define MT_CLS_CONFIDENCE 0x0003 182 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 183 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 184 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 185 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 186 /* reserved 0x0008 */ 187 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 188 #define MT_CLS_NSMU 0x000a 189 /* reserved 0x0010 */ 190 /* reserved 0x0011 */ 191 #define MT_CLS_WIN_8 0x0012 192 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 193 /* reserved 0x0014 */ 194 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 195 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 196 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 197 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 198 199 /* vendor specific classes */ 200 #define MT_CLS_3M 0x0101 201 /* reserved 0x0102 */ 202 #define MT_CLS_EGALAX 0x0103 203 #define MT_CLS_EGALAX_SERIAL 0x0104 204 #define MT_CLS_TOPSEED 0x0105 205 #define MT_CLS_PANASONIC 0x0106 206 #define MT_CLS_FLATFROG 0x0107 207 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 208 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 209 #define MT_CLS_LG 0x010a 210 #define MT_CLS_ASUS 0x010b 211 #define MT_CLS_VTL 0x0110 212 #define MT_CLS_GOOGLE 0x0111 213 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 214 #define MT_CLS_SMART_TECH 0x0113 215 #define MT_CLS_SIS 0x0457 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 { .name = MT_CLS_SIS, 401 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 402 MT_QUIRK_ALWAYS_VALID | 403 MT_QUIRK_CONTACT_CNT_ACCURATE, 404 }, 405 { } 406 }; 407 408 static ssize_t mt_show_quirks(struct device *dev, 409 struct device_attribute *attr, 410 char *buf) 411 { 412 struct hid_device *hdev = to_hid_device(dev); 413 struct mt_device *td = hid_get_drvdata(hdev); 414 415 return sprintf(buf, "%u\n", td->mtclass.quirks); 416 } 417 418 static ssize_t mt_set_quirks(struct device *dev, 419 struct device_attribute *attr, 420 const char *buf, size_t count) 421 { 422 struct hid_device *hdev = to_hid_device(dev); 423 struct mt_device *td = hid_get_drvdata(hdev); 424 struct mt_application *application; 425 426 unsigned long val; 427 428 if (kstrtoul(buf, 0, &val)) 429 return -EINVAL; 430 431 td->mtclass.quirks = val; 432 433 list_for_each_entry(application, &td->applications, list) { 434 application->quirks = val; 435 if (!application->have_contact_count) 436 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 437 } 438 439 return count; 440 } 441 442 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 443 444 static struct attribute *sysfs_attrs[] = { 445 &dev_attr_quirks.attr, 446 NULL 447 }; 448 449 static const struct attribute_group mt_attribute_group = { 450 .attrs = sysfs_attrs 451 }; 452 453 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 454 { 455 int ret; 456 u32 size = hid_report_len(report); 457 u8 *buf; 458 459 /* 460 * Do not fetch the feature report if the device has been explicitly 461 * marked as non-capable. 462 */ 463 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 464 return; 465 466 buf = hid_alloc_report_buf(report, GFP_KERNEL); 467 if (!buf) 468 return; 469 470 ret = hid_hw_raw_request(hdev, report->id, buf, size, 471 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 472 if (ret < 0) { 473 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 474 report->id); 475 } else { 476 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 477 size, 0); 478 if (ret) 479 dev_warn(&hdev->dev, "failed to report feature\n"); 480 } 481 482 kfree(buf); 483 } 484 485 static void mt_feature_mapping(struct hid_device *hdev, 486 struct hid_field *field, struct hid_usage *usage) 487 { 488 struct mt_device *td = hid_get_drvdata(hdev); 489 490 switch (usage->hid) { 491 case HID_DG_CONTACTMAX: 492 mt_get_feature(hdev, field->report); 493 494 td->maxcontacts = field->value[0]; 495 if (!td->maxcontacts && 496 field->logical_maximum <= MT_MAX_MAXCONTACT) 497 td->maxcontacts = field->logical_maximum; 498 if (td->mtclass.maxcontacts) 499 /* check if the maxcontacts is given by the class */ 500 td->maxcontacts = td->mtclass.maxcontacts; 501 502 break; 503 case HID_DG_BUTTONTYPE: 504 if (usage->usage_index >= field->report_count) { 505 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 506 break; 507 } 508 509 mt_get_feature(hdev, field->report); 510 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 511 td->is_buttonpad = true; 512 513 break; 514 case 0xff0000c5: 515 /* Retrieve the Win8 blob once to enable some devices */ 516 if (usage->usage_index == 0) 517 mt_get_feature(hdev, field->report); 518 break; 519 } 520 } 521 522 static void set_abs(struct input_dev *input, unsigned int code, 523 struct hid_field *field, int snratio) 524 { 525 int fmin = field->logical_minimum; 526 int fmax = field->logical_maximum; 527 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 528 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 529 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 530 } 531 532 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 533 struct mt_application *application) 534 { 535 struct mt_usages *usage; 536 537 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 538 if (!usage) 539 return NULL; 540 541 /* set some defaults so we do not need to check for null pointers */ 542 usage->x = DEFAULT_ZERO; 543 usage->y = DEFAULT_ZERO; 544 usage->cx = DEFAULT_ZERO; 545 usage->cy = DEFAULT_ZERO; 546 usage->p = DEFAULT_ZERO; 547 usage->w = DEFAULT_ZERO; 548 usage->h = DEFAULT_ZERO; 549 usage->a = DEFAULT_ZERO; 550 usage->contactid = DEFAULT_ZERO; 551 usage->tip_state = DEFAULT_FALSE; 552 usage->inrange_state = DEFAULT_FALSE; 553 usage->confidence_state = DEFAULT_TRUE; 554 555 list_add_tail(&usage->list, &application->mt_usages); 556 557 return usage; 558 } 559 560 static struct mt_application *mt_allocate_application(struct mt_device *td, 561 struct hid_report *report) 562 { 563 unsigned int application = report->application; 564 struct mt_application *mt_application; 565 566 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 567 GFP_KERNEL); 568 if (!mt_application) 569 return NULL; 570 571 mt_application->application = application; 572 INIT_LIST_HEAD(&mt_application->mt_usages); 573 574 if (application == HID_DG_TOUCHSCREEN) 575 mt_application->mt_flags |= INPUT_MT_DIRECT; 576 577 /* 578 * Model touchscreens providing buttons as touchpads. 579 */ 580 if (application == HID_DG_TOUCHPAD) { 581 mt_application->mt_flags |= INPUT_MT_POINTER; 582 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 583 } 584 585 mt_application->scantime = DEFAULT_ZERO; 586 mt_application->raw_cc = DEFAULT_ZERO; 587 mt_application->quirks = td->mtclass.quirks; 588 mt_application->report_id = report->id; 589 590 list_add_tail(&mt_application->list, &td->applications); 591 592 return mt_application; 593 } 594 595 static struct mt_application *mt_find_application(struct mt_device *td, 596 struct hid_report *report) 597 { 598 unsigned int application = report->application; 599 struct mt_application *tmp, *mt_application = NULL; 600 601 list_for_each_entry(tmp, &td->applications, list) { 602 if (application == tmp->application) { 603 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 604 tmp->report_id == report->id) { 605 mt_application = tmp; 606 break; 607 } 608 } 609 } 610 611 if (!mt_application) 612 mt_application = mt_allocate_application(td, report); 613 614 return mt_application; 615 } 616 617 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 618 struct hid_report *report) 619 { 620 struct mt_report_data *rdata; 621 struct hid_field *field; 622 int r, n; 623 624 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 625 if (!rdata) 626 return NULL; 627 628 rdata->report = report; 629 rdata->application = mt_find_application(td, report); 630 631 if (!rdata->application) { 632 devm_kfree(&td->hdev->dev, rdata); 633 return NULL; 634 } 635 636 for (r = 0; r < report->maxfield; r++) { 637 field = report->field[r]; 638 639 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 640 continue; 641 642 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 643 for (n = 0; n < field->report_count; n++) { 644 if (field->usage[n].hid == HID_DG_CONTACTID) { 645 rdata->is_mt_collection = true; 646 break; 647 } 648 } 649 } 650 } 651 652 list_add_tail(&rdata->list, &td->reports); 653 654 return rdata; 655 } 656 657 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 658 struct hid_report *report) 659 { 660 struct mt_report_data *tmp, *rdata = NULL; 661 662 list_for_each_entry(tmp, &td->reports, list) { 663 if (report == tmp->report) { 664 rdata = tmp; 665 break; 666 } 667 } 668 669 if (!rdata) 670 rdata = mt_allocate_report_data(td, report); 671 672 return rdata; 673 } 674 675 static void mt_store_field(struct hid_device *hdev, 676 struct mt_application *application, 677 __s32 *value, 678 size_t offset) 679 { 680 struct mt_usages *usage; 681 __s32 **target; 682 683 if (list_empty(&application->mt_usages)) 684 usage = mt_allocate_usage(hdev, application); 685 else 686 usage = list_last_entry(&application->mt_usages, 687 struct mt_usages, 688 list); 689 690 if (!usage) 691 return; 692 693 target = (__s32 **)((char *)usage + offset); 694 695 /* the value has already been filled, create a new slot */ 696 if (*target != DEFAULT_TRUE && 697 *target != DEFAULT_FALSE && 698 *target != DEFAULT_ZERO) { 699 if (usage->contactid == DEFAULT_ZERO || 700 usage->x == DEFAULT_ZERO || 701 usage->y == DEFAULT_ZERO) { 702 hid_dbg(hdev, 703 "ignoring duplicate usage on incomplete"); 704 return; 705 } 706 usage = mt_allocate_usage(hdev, application); 707 if (!usage) 708 return; 709 710 target = (__s32 **)((char *)usage + offset); 711 } 712 713 *target = value; 714 } 715 716 #define MT_STORE_FIELD(__name) \ 717 mt_store_field(hdev, app, \ 718 &field->value[usage->usage_index], \ 719 offsetof(struct mt_usages, __name)) 720 721 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 722 struct hid_field *field, struct hid_usage *usage, 723 unsigned long **bit, int *max, struct mt_application *app) 724 { 725 struct mt_device *td = hid_get_drvdata(hdev); 726 struct mt_class *cls = &td->mtclass; 727 int code; 728 struct hid_usage *prev_usage = NULL; 729 730 /* 731 * Model touchscreens providing buttons as touchpads. 732 */ 733 if (field->application == HID_DG_TOUCHSCREEN && 734 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 735 app->mt_flags |= INPUT_MT_POINTER; 736 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 737 } 738 739 /* count the buttons on touchpads */ 740 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 741 app->buttons_count++; 742 743 if (usage->usage_index) 744 prev_usage = &field->usage[usage->usage_index - 1]; 745 746 switch (usage->hid & HID_USAGE_PAGE) { 747 748 case HID_UP_GENDESK: 749 switch (usage->hid) { 750 case HID_GD_X: 751 if (prev_usage && (prev_usage->hid == usage->hid)) { 752 code = ABS_MT_TOOL_X; 753 MT_STORE_FIELD(cx); 754 } else { 755 code = ABS_MT_POSITION_X; 756 MT_STORE_FIELD(x); 757 } 758 759 set_abs(hi->input, code, field, cls->sn_move); 760 761 /* 762 * A system multi-axis that exports X and Y has a high 763 * chance of being used directly on a surface 764 */ 765 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 766 __set_bit(INPUT_PROP_DIRECT, 767 hi->input->propbit); 768 input_set_abs_params(hi->input, 769 ABS_MT_TOOL_TYPE, 770 MT_TOOL_DIAL, 771 MT_TOOL_DIAL, 0, 0); 772 } 773 774 return 1; 775 case HID_GD_Y: 776 if (prev_usage && (prev_usage->hid == usage->hid)) { 777 code = ABS_MT_TOOL_Y; 778 MT_STORE_FIELD(cy); 779 } else { 780 code = ABS_MT_POSITION_Y; 781 MT_STORE_FIELD(y); 782 } 783 784 set_abs(hi->input, code, field, cls->sn_move); 785 786 return 1; 787 } 788 return 0; 789 790 case HID_UP_DIGITIZER: 791 switch (usage->hid) { 792 case HID_DG_INRANGE: 793 if (app->quirks & MT_QUIRK_HOVERING) { 794 input_set_abs_params(hi->input, 795 ABS_MT_DISTANCE, 0, 1, 0, 0); 796 } 797 MT_STORE_FIELD(inrange_state); 798 return 1; 799 case HID_DG_CONFIDENCE: 800 if ((cls->name == MT_CLS_WIN_8 || 801 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 802 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 803 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 804 (field->application == HID_DG_TOUCHPAD || 805 field->application == HID_DG_TOUCHSCREEN)) 806 app->quirks |= MT_QUIRK_CONFIDENCE; 807 808 if (app->quirks & MT_QUIRK_CONFIDENCE) 809 input_set_abs_params(hi->input, 810 ABS_MT_TOOL_TYPE, 811 MT_TOOL_FINGER, 812 MT_TOOL_PALM, 0, 0); 813 814 MT_STORE_FIELD(confidence_state); 815 return 1; 816 case HID_DG_TIPSWITCH: 817 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 818 input_set_capability(hi->input, 819 EV_KEY, BTN_TOUCH); 820 MT_STORE_FIELD(tip_state); 821 return 1; 822 case HID_DG_CONTACTID: 823 MT_STORE_FIELD(contactid); 824 app->touches_by_report++; 825 return 1; 826 case HID_DG_WIDTH: 827 if (!(app->quirks & MT_QUIRK_NO_AREA)) 828 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 829 cls->sn_width); 830 MT_STORE_FIELD(w); 831 return 1; 832 case HID_DG_HEIGHT: 833 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 834 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 835 cls->sn_height); 836 837 /* 838 * Only set ABS_MT_ORIENTATION if it is not 839 * already set by the HID_DG_AZIMUTH usage. 840 */ 841 if (!test_bit(ABS_MT_ORIENTATION, 842 hi->input->absbit)) 843 input_set_abs_params(hi->input, 844 ABS_MT_ORIENTATION, 0, 1, 0, 0); 845 } 846 MT_STORE_FIELD(h); 847 return 1; 848 case HID_DG_TIPPRESSURE: 849 set_abs(hi->input, ABS_MT_PRESSURE, field, 850 cls->sn_pressure); 851 MT_STORE_FIELD(p); 852 return 1; 853 case HID_DG_SCANTIME: 854 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 855 app->scantime = &field->value[usage->usage_index]; 856 app->scantime_logical_max = field->logical_maximum; 857 return 1; 858 case HID_DG_CONTACTCOUNT: 859 app->have_contact_count = true; 860 app->raw_cc = &field->value[usage->usage_index]; 861 return 1; 862 case HID_DG_AZIMUTH: 863 /* 864 * Azimuth has the range of [0, MAX) representing a full 865 * revolution. Set ABS_MT_ORIENTATION to a quarter of 866 * MAX according the definition of ABS_MT_ORIENTATION 867 */ 868 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 869 -field->logical_maximum / 4, 870 field->logical_maximum / 4, 871 cls->sn_move ? 872 field->logical_maximum / cls->sn_move : 0, 0); 873 MT_STORE_FIELD(a); 874 return 1; 875 case HID_DG_CONTACTMAX: 876 /* contact max are global to the report */ 877 return -1; 878 case HID_DG_TOUCH: 879 /* Legacy devices use TIPSWITCH and not TOUCH. 880 * Let's just ignore this field. */ 881 return -1; 882 } 883 /* let hid-input decide for the others */ 884 return 0; 885 886 case HID_UP_BUTTON: 887 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 888 /* 889 * MS PTP spec says that external buttons left and right have 890 * usages 2 and 3. 891 */ 892 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 893 field->application == HID_DG_TOUCHPAD && 894 (usage->hid & HID_USAGE) > 1) 895 code--; 896 897 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 898 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 899 900 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 901 if (!*bit) 902 return -1; 903 input_set_capability(hi->input, EV_KEY, code); 904 return 1; 905 906 case 0xff000000: 907 /* we do not want to map these: no input-oriented meaning */ 908 return -1; 909 } 910 911 return 0; 912 } 913 914 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 915 struct mt_usages *slot, 916 struct input_dev *input) 917 { 918 __s32 quirks = app->quirks; 919 920 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 921 return *slot->contactid; 922 923 if (quirks & MT_QUIRK_CYPRESS) 924 return cypress_compute_slot(app, slot); 925 926 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 927 return app->num_received; 928 929 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 930 return *slot->contactid - 1; 931 932 return input_mt_get_slot_by_key(input, *slot->contactid); 933 } 934 935 static void mt_release_pending_palms(struct mt_device *td, 936 struct mt_application *app, 937 struct input_dev *input) 938 { 939 int slotnum; 940 bool need_sync = false; 941 942 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 943 clear_bit(slotnum, app->pending_palm_slots); 944 945 input_mt_slot(input, slotnum); 946 input_mt_report_slot_inactive(input); 947 948 need_sync = true; 949 } 950 951 if (need_sync) { 952 input_mt_sync_frame(input); 953 input_sync(input); 954 } 955 } 956 957 /* 958 * this function is called when a whole packet has been received and processed, 959 * so that it can decide what to send to the input layer. 960 */ 961 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 962 struct input_dev *input) 963 { 964 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 965 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 966 967 input_mt_sync_frame(input); 968 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 969 input_sync(input); 970 971 mt_release_pending_palms(td, app, input); 972 973 app->num_received = 0; 974 app->left_button_state = 0; 975 976 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 977 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 978 else 979 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 980 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 981 } 982 983 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 984 { 985 long delta = value - app->prev_scantime; 986 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 987 988 app->jiffies = jiffies; 989 990 if (delta < 0) 991 delta += app->scantime_logical_max; 992 993 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 994 delta *= 100; 995 996 if (jdelta > MAX_TIMESTAMP_INTERVAL) 997 /* No data received for a while, resync the timestamp. */ 998 return 0; 999 else 1000 return app->timestamp + delta; 1001 } 1002 1003 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1004 struct hid_usage *usage, __s32 value) 1005 { 1006 /* we will handle the hidinput part later, now remains hiddev */ 1007 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1008 hid->hiddev_hid_event(hid, field, usage, value); 1009 1010 return 1; 1011 } 1012 1013 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1014 struct mt_application *app, 1015 struct mt_usages *slot) 1016 { 1017 struct input_mt *mt = input->mt; 1018 struct hid_device *hdev = td->hdev; 1019 __s32 quirks = app->quirks; 1020 bool valid = true; 1021 bool confidence_state = true; 1022 bool inrange_state = false; 1023 int active; 1024 int slotnum; 1025 int tool = MT_TOOL_FINGER; 1026 1027 if (!slot) 1028 return -EINVAL; 1029 1030 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1031 app->num_received >= app->num_expected) 1032 return -EAGAIN; 1033 1034 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1035 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1036 valid = *slot->inrange_state; 1037 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1038 valid = *slot->tip_state; 1039 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1040 valid = *slot->confidence_state; 1041 1042 if (!valid) 1043 return 0; 1044 } 1045 1046 slotnum = mt_compute_slot(td, app, slot, input); 1047 if (slotnum < 0 || slotnum >= td->maxcontacts) 1048 return 0; 1049 1050 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1051 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1052 1053 if (input_mt_is_active(i_slot) && 1054 input_mt_is_used(mt, i_slot)) 1055 return -EAGAIN; 1056 } 1057 1058 if (quirks & MT_QUIRK_CONFIDENCE) 1059 confidence_state = *slot->confidence_state; 1060 1061 if (quirks & MT_QUIRK_HOVERING) 1062 inrange_state = *slot->inrange_state; 1063 1064 active = *slot->tip_state || inrange_state; 1065 1066 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1067 tool = MT_TOOL_DIAL; 1068 else if (unlikely(!confidence_state)) { 1069 tool = MT_TOOL_PALM; 1070 if (!active && mt && 1071 input_mt_is_active(&mt->slots[slotnum])) { 1072 /* 1073 * The non-confidence was reported for 1074 * previously valid contact that is also no 1075 * longer valid. We can't simply report 1076 * lift-off as userspace will not be aware 1077 * of non-confidence, so we need to split 1078 * it into 2 events: active MT_TOOL_PALM 1079 * and a separate liftoff. 1080 */ 1081 active = true; 1082 set_bit(slotnum, app->pending_palm_slots); 1083 } 1084 } 1085 1086 input_mt_slot(input, slotnum); 1087 input_mt_report_slot_state(input, tool, active); 1088 if (active) { 1089 /* this finger is in proximity of the sensor */ 1090 int wide = (*slot->w > *slot->h); 1091 int major = max(*slot->w, *slot->h); 1092 int minor = min(*slot->w, *slot->h); 1093 int orientation = wide; 1094 int max_azimuth; 1095 int azimuth; 1096 int x; 1097 int y; 1098 int cx; 1099 int cy; 1100 1101 if (slot->a != DEFAULT_ZERO) { 1102 /* 1103 * Azimuth is counter-clockwise and ranges from [0, MAX) 1104 * (a full revolution). Convert it to clockwise ranging 1105 * [-MAX/2, MAX/2]. 1106 * 1107 * Note that ABS_MT_ORIENTATION require us to report 1108 * the limit of [-MAX/4, MAX/4], but the value can go 1109 * out of range to [-MAX/2, MAX/2] to report an upside 1110 * down ellipsis. 1111 */ 1112 azimuth = *slot->a; 1113 max_azimuth = input_abs_get_max(input, 1114 ABS_MT_ORIENTATION); 1115 if (azimuth > max_azimuth * 2) 1116 azimuth -= max_azimuth * 4; 1117 orientation = -azimuth; 1118 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1119 orientation = -orientation; 1120 1121 } 1122 1123 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1124 /* 1125 * divided by two to match visual scale of touch 1126 * for devices with this quirk 1127 */ 1128 major = major >> 1; 1129 minor = minor >> 1; 1130 } 1131 1132 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1133 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1134 *slot->x; 1135 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1136 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1137 *slot->y; 1138 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1139 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1140 *slot->cx; 1141 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1142 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1143 *slot->cy; 1144 1145 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1146 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1147 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1148 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1149 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1150 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1151 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1152 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1153 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1154 1155 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1156 } 1157 1158 return 0; 1159 } 1160 1161 static void mt_process_mt_event(struct hid_device *hid, 1162 struct mt_application *app, 1163 struct hid_field *field, 1164 struct hid_usage *usage, 1165 __s32 value, 1166 bool first_packet) 1167 { 1168 __s32 quirks = app->quirks; 1169 struct input_dev *input = field->hidinput->input; 1170 1171 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1172 return; 1173 1174 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1175 1176 /* 1177 * For Win8 PTP touchpads we should only look at 1178 * non finger/touch events in the first_packet of a 1179 * (possible) multi-packet frame. 1180 */ 1181 if (!first_packet) 1182 return; 1183 1184 /* 1185 * For Win8 PTP touchpads we map both the clickpad click 1186 * and any "external" left buttons to BTN_LEFT if a 1187 * device claims to have both we need to report 1 for 1188 * BTN_LEFT if either is pressed, so we or all values 1189 * together and report the result in mt_sync_frame(). 1190 */ 1191 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1192 app->left_button_state |= value; 1193 return; 1194 } 1195 } 1196 1197 input_event(input, usage->type, usage->code, value); 1198 } 1199 1200 static void mt_touch_report(struct hid_device *hid, 1201 struct mt_report_data *rdata) 1202 { 1203 struct mt_device *td = hid_get_drvdata(hid); 1204 struct hid_report *report = rdata->report; 1205 struct mt_application *app = rdata->application; 1206 struct hid_field *field; 1207 struct input_dev *input; 1208 struct mt_usages *slot; 1209 bool first_packet; 1210 unsigned count; 1211 int r, n; 1212 int scantime = 0; 1213 int contact_count = -1; 1214 1215 /* sticky fingers release in progress, abort */ 1216 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1217 return; 1218 1219 scantime = *app->scantime; 1220 app->timestamp = mt_compute_timestamp(app, scantime); 1221 if (app->raw_cc != DEFAULT_ZERO) 1222 contact_count = *app->raw_cc; 1223 1224 /* 1225 * Includes multi-packet support where subsequent 1226 * packets are sent with zero contactcount. 1227 */ 1228 if (contact_count >= 0) { 1229 /* 1230 * For Win8 PTPs the first packet (td->num_received == 0) may 1231 * have a contactcount of 0 if there only is a button event. 1232 * We double check that this is not a continuation packet 1233 * of a possible multi-packet frame be checking that the 1234 * timestamp has changed. 1235 */ 1236 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1237 app->num_received == 0 && 1238 app->prev_scantime != scantime) 1239 app->num_expected = contact_count; 1240 /* A non 0 contact count always indicates a first packet */ 1241 else if (contact_count) 1242 app->num_expected = contact_count; 1243 } 1244 app->prev_scantime = scantime; 1245 1246 first_packet = app->num_received == 0; 1247 1248 input = report->field[0]->hidinput->input; 1249 1250 list_for_each_entry(slot, &app->mt_usages, list) { 1251 if (!mt_process_slot(td, input, app, slot)) 1252 app->num_received++; 1253 } 1254 1255 for (r = 0; r < report->maxfield; r++) { 1256 field = report->field[r]; 1257 count = field->report_count; 1258 1259 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1260 continue; 1261 1262 for (n = 0; n < count; n++) 1263 mt_process_mt_event(hid, app, field, 1264 &field->usage[n], field->value[n], 1265 first_packet); 1266 } 1267 1268 if (app->num_received >= app->num_expected) 1269 mt_sync_frame(td, app, input); 1270 1271 /* 1272 * Windows 8 specs says 2 things: 1273 * - once a contact has been reported, it has to be reported in each 1274 * subsequent report 1275 * - the report rate when fingers are present has to be at least 1276 * the refresh rate of the screen, 60 or 120 Hz 1277 * 1278 * I interprete this that the specification forces a report rate of 1279 * at least 60 Hz for a touchscreen to be certified. 1280 * Which means that if we do not get a report whithin 16 ms, either 1281 * something wrong happens, either the touchscreen forgets to send 1282 * a release. Taking a reasonable margin allows to remove issues 1283 * with USB communication or the load of the machine. 1284 * 1285 * Given that Win 8 devices are forced to send a release, this will 1286 * only affect laggish machines and the ones that have a firmware 1287 * defect. 1288 */ 1289 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1290 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1291 mod_timer(&td->release_timer, 1292 jiffies + msecs_to_jiffies(100)); 1293 else 1294 del_timer(&td->release_timer); 1295 } 1296 1297 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1298 } 1299 1300 static int mt_touch_input_configured(struct hid_device *hdev, 1301 struct hid_input *hi, 1302 struct mt_application *app) 1303 { 1304 struct mt_device *td = hid_get_drvdata(hdev); 1305 struct mt_class *cls = &td->mtclass; 1306 struct input_dev *input = hi->input; 1307 int ret; 1308 1309 if (!td->maxcontacts) 1310 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1311 1312 mt_post_parse(td, app); 1313 if (td->serial_maybe) 1314 mt_post_parse_default_settings(td, app); 1315 1316 if (cls->is_indirect) 1317 app->mt_flags |= INPUT_MT_POINTER; 1318 1319 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1320 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1321 1322 /* check for clickpads */ 1323 if ((app->mt_flags & INPUT_MT_POINTER) && 1324 (app->buttons_count == 1)) 1325 td->is_buttonpad = true; 1326 1327 if (td->is_buttonpad) 1328 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1329 1330 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1331 BITS_TO_LONGS(td->maxcontacts), 1332 sizeof(long), 1333 GFP_KERNEL); 1334 if (!app->pending_palm_slots) 1335 return -ENOMEM; 1336 1337 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1338 if (ret) 1339 return ret; 1340 1341 app->mt_flags = 0; 1342 return 0; 1343 } 1344 1345 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1346 max, EV_KEY, (c)) 1347 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1348 struct hid_field *field, struct hid_usage *usage, 1349 unsigned long **bit, int *max) 1350 { 1351 struct mt_device *td = hid_get_drvdata(hdev); 1352 struct mt_application *application; 1353 struct mt_report_data *rdata; 1354 1355 rdata = mt_find_report_data(td, field->report); 1356 if (!rdata) { 1357 hid_err(hdev, "failed to allocate data for report\n"); 1358 return 0; 1359 } 1360 1361 application = rdata->application; 1362 1363 /* 1364 * If mtclass.export_all_inputs is not set, only map fields from 1365 * TouchScreen or TouchPad collections. We need to ignore fields 1366 * that belong to other collections such as Mouse that might have 1367 * the same GenericDesktop usages. 1368 */ 1369 if (!td->mtclass.export_all_inputs && 1370 field->application != HID_DG_TOUCHSCREEN && 1371 field->application != HID_DG_PEN && 1372 field->application != HID_DG_TOUCHPAD && 1373 field->application != HID_GD_KEYBOARD && 1374 field->application != HID_GD_SYSTEM_CONTROL && 1375 field->application != HID_CP_CONSUMER_CONTROL && 1376 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1377 field->application != HID_GD_SYSTEM_MULTIAXIS && 1378 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1379 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1380 return -1; 1381 1382 /* 1383 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1384 * touchpad report descriptor. We need to treat these as an array to 1385 * map usages to input keys. 1386 */ 1387 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1388 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1389 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1390 set_bit(EV_REP, hi->input->evbit); 1391 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1392 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1393 switch (usage->hid & HID_USAGE) { 1394 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1395 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1396 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1397 case 0x6b: mt_map_key_clear(KEY_F21); break; 1398 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1399 default: 1400 return -1; 1401 } 1402 return 1; 1403 } 1404 1405 if (rdata->is_mt_collection) 1406 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1407 application); 1408 1409 /* 1410 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1411 * for the stylus. Overwrite the hid_input application 1412 */ 1413 if (field->physical == HID_DG_STYLUS) 1414 hi->application = HID_DG_STYLUS; 1415 1416 /* let hid-core decide for the others */ 1417 return 0; 1418 } 1419 1420 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1421 struct hid_field *field, struct hid_usage *usage, 1422 unsigned long **bit, int *max) 1423 { 1424 struct mt_device *td = hid_get_drvdata(hdev); 1425 struct mt_report_data *rdata; 1426 1427 rdata = mt_find_report_data(td, field->report); 1428 if (rdata && rdata->is_mt_collection) { 1429 /* We own these mappings, tell hid-input to ignore them */ 1430 return -1; 1431 } 1432 1433 /* let hid-core decide for the others */ 1434 return 0; 1435 } 1436 1437 static int mt_event(struct hid_device *hid, struct hid_field *field, 1438 struct hid_usage *usage, __s32 value) 1439 { 1440 struct mt_device *td = hid_get_drvdata(hid); 1441 struct mt_report_data *rdata; 1442 1443 rdata = mt_find_report_data(td, field->report); 1444 if (rdata && rdata->is_mt_collection) 1445 return mt_touch_event(hid, field, usage, value); 1446 1447 return 0; 1448 } 1449 1450 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1451 unsigned int *size) 1452 { 1453 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1454 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1455 hdev->product == I2C_DEVICE_ID_GOODIX_01E9 || 1456 hdev->product == I2C_DEVICE_ID_GOODIX_01E0)) { 1457 if (rdesc[607] == 0x15) { 1458 rdesc[607] = 0x25; 1459 dev_info( 1460 &hdev->dev, 1461 "GT7868Q report descriptor fixup is applied.\n"); 1462 } else { 1463 dev_info( 1464 &hdev->dev, 1465 "The byte is not expected for fixing the report descriptor. \ 1466 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1467 got: %x\n", 1468 rdesc[607]); 1469 } 1470 } 1471 1472 return rdesc; 1473 } 1474 1475 static void mt_report(struct hid_device *hid, struct hid_report *report) 1476 { 1477 struct mt_device *td = hid_get_drvdata(hid); 1478 struct hid_field *field = report->field[0]; 1479 struct mt_report_data *rdata; 1480 1481 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1482 return; 1483 1484 rdata = mt_find_report_data(td, report); 1485 if (rdata && rdata->is_mt_collection) 1486 return mt_touch_report(hid, rdata); 1487 1488 if (field && field->hidinput && field->hidinput->input) 1489 input_sync(field->hidinput->input); 1490 } 1491 1492 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1493 struct hid_field *field, 1494 struct hid_usage *usage, 1495 enum latency_mode latency, 1496 bool surface_switch, 1497 bool button_switch, 1498 bool *inputmode_found) 1499 { 1500 struct mt_device *td = hid_get_drvdata(hdev); 1501 struct mt_class *cls = &td->mtclass; 1502 struct hid_report *report = field->report; 1503 unsigned int index = usage->usage_index; 1504 char *buf; 1505 u32 report_len; 1506 int max; 1507 1508 switch (usage->hid) { 1509 case HID_DG_INPUTMODE: 1510 /* 1511 * Some elan panels wrongly declare 2 input mode features, 1512 * and silently ignore when we set the value in the second 1513 * field. Skip the second feature and hope for the best. 1514 */ 1515 if (*inputmode_found) 1516 return false; 1517 1518 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1519 report_len = hid_report_len(report); 1520 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1521 if (!buf) { 1522 hid_err(hdev, 1523 "failed to allocate buffer for report\n"); 1524 return false; 1525 } 1526 hid_hw_raw_request(hdev, report->id, buf, report_len, 1527 HID_FEATURE_REPORT, 1528 HID_REQ_GET_REPORT); 1529 kfree(buf); 1530 } 1531 1532 field->value[index] = td->inputmode_value; 1533 *inputmode_found = true; 1534 return true; 1535 1536 case HID_DG_CONTACTMAX: 1537 if (cls->maxcontacts) { 1538 max = min_t(int, field->logical_maximum, 1539 cls->maxcontacts); 1540 if (field->value[index] != max) { 1541 field->value[index] = max; 1542 return true; 1543 } 1544 } 1545 break; 1546 1547 case HID_DG_LATENCYMODE: 1548 field->value[index] = latency; 1549 return true; 1550 1551 case HID_DG_SURFACESWITCH: 1552 field->value[index] = surface_switch; 1553 return true; 1554 1555 case HID_DG_BUTTONSWITCH: 1556 field->value[index] = button_switch; 1557 return true; 1558 } 1559 1560 return false; /* no need to update the report */ 1561 } 1562 1563 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1564 bool surface_switch, bool button_switch) 1565 { 1566 struct hid_report_enum *rep_enum; 1567 struct hid_report *rep; 1568 struct hid_usage *usage; 1569 int i, j; 1570 bool update_report; 1571 bool inputmode_found = false; 1572 1573 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1574 list_for_each_entry(rep, &rep_enum->report_list, list) { 1575 update_report = false; 1576 1577 for (i = 0; i < rep->maxfield; i++) { 1578 /* Ignore if report count is out of bounds. */ 1579 if (rep->field[i]->report_count < 1) 1580 continue; 1581 1582 for (j = 0; j < rep->field[i]->maxusage; j++) { 1583 usage = &rep->field[i]->usage[j]; 1584 1585 if (mt_need_to_apply_feature(hdev, 1586 rep->field[i], 1587 usage, 1588 latency, 1589 surface_switch, 1590 button_switch, 1591 &inputmode_found)) 1592 update_report = true; 1593 } 1594 } 1595 1596 if (update_report) 1597 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1598 } 1599 } 1600 1601 static void mt_post_parse_default_settings(struct mt_device *td, 1602 struct mt_application *app) 1603 { 1604 __s32 quirks = app->quirks; 1605 1606 /* unknown serial device needs special quirks */ 1607 if (list_is_singular(&app->mt_usages)) { 1608 quirks |= MT_QUIRK_ALWAYS_VALID; 1609 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1610 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1611 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1612 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1613 } 1614 1615 app->quirks = quirks; 1616 } 1617 1618 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1619 { 1620 if (!app->have_contact_count) 1621 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1622 } 1623 1624 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1625 { 1626 struct mt_device *td = hid_get_drvdata(hdev); 1627 const char *suffix = NULL; 1628 struct mt_report_data *rdata; 1629 struct mt_application *mt_application = NULL; 1630 struct hid_report *report; 1631 int ret; 1632 1633 list_for_each_entry(report, &hi->reports, hidinput_list) { 1634 rdata = mt_find_report_data(td, report); 1635 if (!rdata) { 1636 hid_err(hdev, "failed to allocate data for report\n"); 1637 return -ENOMEM; 1638 } 1639 1640 mt_application = rdata->application; 1641 1642 if (rdata->is_mt_collection) { 1643 ret = mt_touch_input_configured(hdev, hi, 1644 mt_application); 1645 if (ret) 1646 return ret; 1647 } 1648 } 1649 1650 switch (hi->application) { 1651 case HID_GD_KEYBOARD: 1652 case HID_GD_KEYPAD: 1653 case HID_GD_MOUSE: 1654 case HID_DG_TOUCHPAD: 1655 case HID_GD_SYSTEM_CONTROL: 1656 case HID_CP_CONSUMER_CONTROL: 1657 case HID_GD_WIRELESS_RADIO_CTLS: 1658 case HID_GD_SYSTEM_MULTIAXIS: 1659 /* already handled by hid core */ 1660 break; 1661 case HID_DG_TOUCHSCREEN: 1662 /* we do not set suffix = "Touchscreen" */ 1663 hi->input->name = hdev->name; 1664 break; 1665 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1666 suffix = "Custom Media Keys"; 1667 break; 1668 case HID_DG_STYLUS: 1669 /* force BTN_STYLUS to allow tablet matching in udev */ 1670 __set_bit(BTN_STYLUS, hi->input->keybit); 1671 break; 1672 default: 1673 suffix = "UNKNOWN"; 1674 break; 1675 } 1676 1677 if (suffix) 1678 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1679 "%s %s", hdev->name, suffix); 1680 1681 return 0; 1682 } 1683 1684 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1685 { 1686 if (field->usage[0].hid != usage || 1687 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1688 return; 1689 1690 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1691 field->flags |= HID_MAIN_ITEM_VARIABLE; 1692 } 1693 1694 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1695 { 1696 struct hid_report *report; 1697 int i; 1698 1699 list_for_each_entry(report, 1700 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1701 list) { 1702 1703 if (!report->maxfield) 1704 continue; 1705 1706 for (i = 0; i < report->maxfield; i++) 1707 if (report->field[i]->maxusage >= 1) 1708 mt_fix_const_field(report->field[i], usage); 1709 } 1710 } 1711 1712 static void mt_release_contacts(struct hid_device *hid) 1713 { 1714 struct hid_input *hidinput; 1715 struct mt_application *application; 1716 struct mt_device *td = hid_get_drvdata(hid); 1717 1718 list_for_each_entry(hidinput, &hid->inputs, list) { 1719 struct input_dev *input_dev = hidinput->input; 1720 struct input_mt *mt = input_dev->mt; 1721 int i; 1722 1723 if (mt) { 1724 for (i = 0; i < mt->num_slots; i++) { 1725 input_mt_slot(input_dev, i); 1726 input_mt_report_slot_inactive(input_dev); 1727 } 1728 input_mt_sync_frame(input_dev); 1729 input_sync(input_dev); 1730 } 1731 } 1732 1733 list_for_each_entry(application, &td->applications, list) { 1734 application->num_received = 0; 1735 } 1736 } 1737 1738 static void mt_expired_timeout(struct timer_list *t) 1739 { 1740 struct mt_device *td = from_timer(td, t, release_timer); 1741 struct hid_device *hdev = td->hdev; 1742 1743 /* 1744 * An input report came in just before we release the sticky fingers, 1745 * it will take care of the sticky fingers. 1746 */ 1747 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1748 return; 1749 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1750 mt_release_contacts(hdev); 1751 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1752 } 1753 1754 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1755 { 1756 int ret, i; 1757 struct mt_device *td; 1758 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1759 1760 for (i = 0; mt_classes[i].name ; i++) { 1761 if (id->driver_data == mt_classes[i].name) { 1762 mtclass = &(mt_classes[i]); 1763 break; 1764 } 1765 } 1766 1767 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1768 if (!td) { 1769 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1770 return -ENOMEM; 1771 } 1772 td->hdev = hdev; 1773 td->mtclass = *mtclass; 1774 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1775 hid_set_drvdata(hdev, td); 1776 1777 INIT_LIST_HEAD(&td->applications); 1778 INIT_LIST_HEAD(&td->reports); 1779 1780 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1781 td->serial_maybe = true; 1782 1783 1784 /* Orientation is inverted if the X or Y axes are 1785 * flipped, but normalized if both are inverted. 1786 */ 1787 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1788 !((hdev->quirks & HID_QUIRK_X_INVERT) 1789 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1790 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1791 1792 /* This allows the driver to correctly support devices 1793 * that emit events over several HID messages. 1794 */ 1795 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1796 1797 /* 1798 * This allows the driver to handle different input sensors 1799 * that emits events through different applications on the same HID 1800 * device. 1801 */ 1802 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1803 1804 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1805 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1806 1807 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1808 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1809 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1810 } 1811 1812 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1813 1814 ret = hid_parse(hdev); 1815 if (ret != 0) 1816 return ret; 1817 1818 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1819 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1820 1821 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 1822 hdev->quirks |= HID_QUIRK_NOGET; 1823 1824 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1825 if (ret) 1826 return ret; 1827 1828 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1829 if (ret) 1830 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1831 hdev->name); 1832 1833 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1834 1835 return 0; 1836 } 1837 1838 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1839 { 1840 struct mt_device *td = hid_get_drvdata(hdev); 1841 1842 /* High latency is desirable for power savings during S3/S0ix */ 1843 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1844 !hid_hw_may_wakeup(hdev)) 1845 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false); 1846 else 1847 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true); 1848 1849 return 0; 1850 } 1851 1852 static int mt_reset_resume(struct hid_device *hdev) 1853 { 1854 mt_release_contacts(hdev); 1855 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1856 return 0; 1857 } 1858 1859 static int mt_resume(struct hid_device *hdev) 1860 { 1861 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1862 * It should be safe to send it to other devices too. 1863 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1864 1865 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1866 1867 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1868 1869 return 0; 1870 } 1871 1872 static void mt_remove(struct hid_device *hdev) 1873 { 1874 struct mt_device *td = hid_get_drvdata(hdev); 1875 1876 del_timer_sync(&td->release_timer); 1877 1878 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1879 hid_hw_stop(hdev); 1880 } 1881 1882 /* 1883 * This list contains only: 1884 * - VID/PID of products not working with the default multitouch handling 1885 * - 2 generic rules. 1886 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1887 */ 1888 static const struct hid_device_id mt_devices[] = { 1889 1890 /* 3M panels */ 1891 { .driver_data = MT_CLS_3M, 1892 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1893 USB_DEVICE_ID_3M1968) }, 1894 { .driver_data = MT_CLS_3M, 1895 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1896 USB_DEVICE_ID_3M2256) }, 1897 { .driver_data = MT_CLS_3M, 1898 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1899 USB_DEVICE_ID_3M3266) }, 1900 1901 /* Anton devices */ 1902 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1903 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1904 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1905 1906 /* Asus T101HA */ 1907 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 1908 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1909 USB_VENDOR_ID_ASUSTEK, 1910 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 1911 1912 /* Asus T304UA */ 1913 { .driver_data = MT_CLS_ASUS, 1914 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1915 USB_VENDOR_ID_ASUSTEK, 1916 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1917 1918 /* Atmel panels */ 1919 { .driver_data = MT_CLS_SERIAL, 1920 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1921 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1922 1923 /* Baanto multitouch devices */ 1924 { .driver_data = MT_CLS_NSMU, 1925 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1926 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1927 1928 /* Cando panels */ 1929 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1930 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1931 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1932 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1933 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1934 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1935 1936 /* Chunghwa Telecom touch panels */ 1937 { .driver_data = MT_CLS_NSMU, 1938 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1939 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1940 1941 /* CJTouch panels */ 1942 { .driver_data = MT_CLS_NSMU, 1943 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1944 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1945 { .driver_data = MT_CLS_NSMU, 1946 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1947 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1948 1949 /* CVTouch panels */ 1950 { .driver_data = MT_CLS_NSMU, 1951 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1952 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1953 1954 /* eGalax devices (SAW) */ 1955 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1956 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1957 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 1958 1959 /* eGalax devices (resistive) */ 1960 { .driver_data = MT_CLS_EGALAX, 1961 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1962 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1963 { .driver_data = MT_CLS_EGALAX, 1964 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1965 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1966 1967 /* eGalax devices (capacitive) */ 1968 { .driver_data = MT_CLS_EGALAX_SERIAL, 1969 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1970 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1971 { .driver_data = MT_CLS_EGALAX, 1972 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1973 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1974 { .driver_data = MT_CLS_EGALAX_SERIAL, 1975 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1976 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1977 { .driver_data = MT_CLS_EGALAX_SERIAL, 1978 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1979 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1980 { .driver_data = MT_CLS_EGALAX_SERIAL, 1981 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1982 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1983 { .driver_data = MT_CLS_EGALAX_SERIAL, 1984 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1985 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1986 { .driver_data = MT_CLS_EGALAX, 1987 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1988 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1989 { .driver_data = MT_CLS_EGALAX, 1990 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1991 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1992 { .driver_data = MT_CLS_EGALAX_SERIAL, 1993 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1994 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1995 { .driver_data = MT_CLS_EGALAX, 1996 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1997 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1998 { .driver_data = MT_CLS_EGALAX, 1999 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2000 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2001 { .driver_data = MT_CLS_EGALAX, 2002 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2003 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2004 { .driver_data = MT_CLS_EGALAX, 2005 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2006 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2007 { .driver_data = MT_CLS_EGALAX_SERIAL, 2008 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2009 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2010 { .driver_data = MT_CLS_EGALAX_SERIAL, 2011 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2012 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2013 { .driver_data = MT_CLS_EGALAX_SERIAL, 2014 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2015 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2016 { .driver_data = MT_CLS_EGALAX, 2017 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2018 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2019 2020 /* Elan devices */ 2021 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2022 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2023 USB_VENDOR_ID_ELAN, 0x313a) }, 2024 2025 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2026 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2027 USB_VENDOR_ID_ELAN, 0x3148) }, 2028 2029 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2030 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2031 USB_VENDOR_ID_ELAN, 0x32ae) }, 2032 2033 /* Elitegroup panel */ 2034 { .driver_data = MT_CLS_SERIAL, 2035 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2036 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2037 2038 /* Flatfrog Panels */ 2039 { .driver_data = MT_CLS_FLATFROG, 2040 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2041 USB_DEVICE_ID_MULTITOUCH_3200) }, 2042 2043 /* FocalTech Panels */ 2044 { .driver_data = MT_CLS_SERIAL, 2045 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2046 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2047 2048 /* GeneralTouch panel */ 2049 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2050 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2051 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2052 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2053 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2054 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2055 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2056 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2057 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2058 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2059 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2060 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2061 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2062 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2063 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2064 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2065 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2066 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2067 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2068 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2069 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2070 2071 /* Gametel game controller */ 2072 { .driver_data = MT_CLS_NSMU, 2073 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2074 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2075 2076 /* Goodix GT7868Q devices */ 2077 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2078 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2079 I2C_DEVICE_ID_GOODIX_01E8) }, 2080 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2081 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2082 I2C_DEVICE_ID_GOODIX_01E9) }, 2083 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2084 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2085 I2C_DEVICE_ID_GOODIX_01E0) }, 2086 2087 /* GoodTouch panels */ 2088 { .driver_data = MT_CLS_NSMU, 2089 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2090 USB_DEVICE_ID_GOODTOUCH_000f) }, 2091 2092 /* Hanvon panels */ 2093 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2094 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2095 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2096 2097 /* HONOR GLO-GXXX panel */ 2098 { .driver_data = MT_CLS_VTL, 2099 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2100 0x347d, 0x7853) }, 2101 2102 /* HONOR MagicBook Art 14 touchpad */ 2103 { .driver_data = MT_CLS_VTL, 2104 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2105 0x35cc, 0x0104) }, 2106 2107 /* Ilitek dual touch panel */ 2108 { .driver_data = MT_CLS_NSMU, 2109 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2110 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2111 2112 /* LG Melfas panel */ 2113 { .driver_data = MT_CLS_LG, 2114 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2115 USB_DEVICE_ID_LG_MELFAS_MT) }, 2116 { .driver_data = MT_CLS_LG, 2117 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2118 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2119 2120 /* Lenovo X1 TAB Gen 2 */ 2121 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2122 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2123 USB_VENDOR_ID_LENOVO, 2124 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2125 2126 /* Lenovo X1 TAB Gen 3 */ 2127 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2128 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2129 USB_VENDOR_ID_LENOVO, 2130 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2131 2132 /* Lenovo X12 TAB Gen 1 */ 2133 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2134 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2135 USB_VENDOR_ID_LENOVO, 2136 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2137 2138 /* Lenovo X12 TAB Gen 2 */ 2139 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2140 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2141 USB_VENDOR_ID_LENOVO, 2142 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2143 2144 /* Logitech devices */ 2145 { .driver_data = MT_CLS_NSMU, 2146 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2147 USB_VENDOR_ID_LOGITECH, 2148 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2149 2150 /* MosArt panels */ 2151 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2152 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2153 USB_DEVICE_ID_ASUS_T91MT)}, 2154 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2155 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2156 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2157 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2158 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2159 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2160 2161 /* Novatek Panel */ 2162 { .driver_data = MT_CLS_NSMU, 2163 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2164 USB_DEVICE_ID_NOVATEK_PCT) }, 2165 2166 /* Ntrig Panel */ 2167 { .driver_data = MT_CLS_NSMU, 2168 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2169 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2170 2171 /* Panasonic panels */ 2172 { .driver_data = MT_CLS_PANASONIC, 2173 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2174 USB_DEVICE_ID_PANABOARD_UBT780) }, 2175 { .driver_data = MT_CLS_PANASONIC, 2176 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2177 USB_DEVICE_ID_PANABOARD_UBT880) }, 2178 2179 /* PixArt optical touch screen */ 2180 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2181 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2182 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2183 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2184 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2185 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2186 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2187 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2188 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2189 2190 /* PixCir-based panels */ 2191 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2192 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2193 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2194 2195 /* Quanta-based panels */ 2196 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2197 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2198 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2199 2200 /* Razer touchpads */ 2201 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2202 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2203 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2204 2205 /* Smart Tech panels */ 2206 { .driver_data = MT_CLS_SMART_TECH, 2207 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2208 2209 /* Stantum panels */ 2210 { .driver_data = MT_CLS_CONFIDENCE, 2211 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2212 USB_DEVICE_ID_MTP_STM)}, 2213 2214 /* Synaptics devices */ 2215 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2216 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2217 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2218 2219 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2220 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2221 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2222 2223 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2224 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2225 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2226 2227 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2228 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2229 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2230 2231 /* TopSeed panels */ 2232 { .driver_data = MT_CLS_TOPSEED, 2233 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2234 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2235 2236 /* Touch International panels */ 2237 { .driver_data = MT_CLS_NSMU, 2238 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2239 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2240 2241 /* Unitec panels */ 2242 { .driver_data = MT_CLS_NSMU, 2243 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2244 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2245 { .driver_data = MT_CLS_NSMU, 2246 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2247 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2248 2249 /* VTL panels */ 2250 { .driver_data = MT_CLS_VTL, 2251 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2252 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2253 2254 /* Winbond Electronics Corp. */ 2255 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2256 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2257 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2258 2259 /* Wistron panels */ 2260 { .driver_data = MT_CLS_NSMU, 2261 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2262 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2263 2264 /* XAT */ 2265 { .driver_data = MT_CLS_NSMU, 2266 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2267 USB_DEVICE_ID_XAT_CSR) }, 2268 2269 /* Xiroku */ 2270 { .driver_data = MT_CLS_NSMU, 2271 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2272 USB_DEVICE_ID_XIROKU_SPX) }, 2273 { .driver_data = MT_CLS_NSMU, 2274 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2275 USB_DEVICE_ID_XIROKU_MPX) }, 2276 { .driver_data = MT_CLS_NSMU, 2277 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2278 USB_DEVICE_ID_XIROKU_CSR) }, 2279 { .driver_data = MT_CLS_NSMU, 2280 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2281 USB_DEVICE_ID_XIROKU_SPX1) }, 2282 { .driver_data = MT_CLS_NSMU, 2283 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2284 USB_DEVICE_ID_XIROKU_MPX1) }, 2285 { .driver_data = MT_CLS_NSMU, 2286 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2287 USB_DEVICE_ID_XIROKU_CSR1) }, 2288 { .driver_data = MT_CLS_NSMU, 2289 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2290 USB_DEVICE_ID_XIROKU_SPX2) }, 2291 { .driver_data = MT_CLS_NSMU, 2292 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2293 USB_DEVICE_ID_XIROKU_MPX2) }, 2294 { .driver_data = MT_CLS_NSMU, 2295 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2296 USB_DEVICE_ID_XIROKU_CSR2) }, 2297 2298 /* Google MT devices */ 2299 { .driver_data = MT_CLS_GOOGLE, 2300 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2301 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2302 { .driver_data = MT_CLS_GOOGLE, 2303 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2304 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2305 2306 /* sis */ 2307 { .driver_data = MT_CLS_SIS, 2308 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2309 HID_ANY_ID) }, 2310 2311 /* Generic MT device */ 2312 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2313 2314 /* Generic Win 8 certified MT device */ 2315 { .driver_data = MT_CLS_WIN_8, 2316 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2317 HID_ANY_ID, HID_ANY_ID) }, 2318 { } 2319 }; 2320 MODULE_DEVICE_TABLE(hid, mt_devices); 2321 2322 static const struct hid_usage_id mt_grabbed_usages[] = { 2323 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2324 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2325 }; 2326 2327 static struct hid_driver mt_driver = { 2328 .name = "hid-multitouch", 2329 .id_table = mt_devices, 2330 .probe = mt_probe, 2331 .remove = mt_remove, 2332 .input_mapping = mt_input_mapping, 2333 .input_mapped = mt_input_mapped, 2334 .input_configured = mt_input_configured, 2335 .feature_mapping = mt_feature_mapping, 2336 .usage_table = mt_grabbed_usages, 2337 .event = mt_event, 2338 .report_fixup = mt_report_fixup, 2339 .report = mt_report, 2340 .suspend = pm_ptr(mt_suspend), 2341 .reset_resume = pm_ptr(mt_reset_resume), 2342 .resume = pm_ptr(mt_resume), 2343 }; 2344 module_hid_driver(mt_driver); 2345