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 __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1446 unsigned int *size) 1447 { 1448 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1449 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1450 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1451 if (rdesc[607] == 0x15) { 1452 rdesc[607] = 0x25; 1453 dev_info( 1454 &hdev->dev, 1455 "GT7868Q report descriptor fixup is applied.\n"); 1456 } else { 1457 dev_info( 1458 &hdev->dev, 1459 "The byte is not expected for fixing the report descriptor. \ 1460 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1461 got: %x\n", 1462 rdesc[607]); 1463 } 1464 } 1465 1466 return rdesc; 1467 } 1468 1469 static void mt_report(struct hid_device *hid, struct hid_report *report) 1470 { 1471 struct mt_device *td = hid_get_drvdata(hid); 1472 struct hid_field *field = report->field[0]; 1473 struct mt_report_data *rdata; 1474 1475 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1476 return; 1477 1478 rdata = mt_find_report_data(td, report); 1479 if (rdata && rdata->is_mt_collection) 1480 return mt_touch_report(hid, rdata); 1481 1482 if (field && field->hidinput && field->hidinput->input) 1483 input_sync(field->hidinput->input); 1484 } 1485 1486 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1487 struct hid_field *field, 1488 struct hid_usage *usage, 1489 enum latency_mode latency, 1490 bool surface_switch, 1491 bool button_switch, 1492 bool *inputmode_found) 1493 { 1494 struct mt_device *td = hid_get_drvdata(hdev); 1495 struct mt_class *cls = &td->mtclass; 1496 struct hid_report *report = field->report; 1497 unsigned int index = usage->usage_index; 1498 char *buf; 1499 u32 report_len; 1500 int max; 1501 1502 switch (usage->hid) { 1503 case HID_DG_INPUTMODE: 1504 /* 1505 * Some elan panels wrongly declare 2 input mode features, 1506 * and silently ignore when we set the value in the second 1507 * field. Skip the second feature and hope for the best. 1508 */ 1509 if (*inputmode_found) 1510 return false; 1511 1512 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1513 report_len = hid_report_len(report); 1514 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1515 if (!buf) { 1516 hid_err(hdev, 1517 "failed to allocate buffer for report\n"); 1518 return false; 1519 } 1520 hid_hw_raw_request(hdev, report->id, buf, report_len, 1521 HID_FEATURE_REPORT, 1522 HID_REQ_GET_REPORT); 1523 kfree(buf); 1524 } 1525 1526 field->value[index] = td->inputmode_value; 1527 *inputmode_found = true; 1528 return true; 1529 1530 case HID_DG_CONTACTMAX: 1531 if (cls->maxcontacts) { 1532 max = min_t(int, field->logical_maximum, 1533 cls->maxcontacts); 1534 if (field->value[index] != max) { 1535 field->value[index] = max; 1536 return true; 1537 } 1538 } 1539 break; 1540 1541 case HID_DG_LATENCYMODE: 1542 field->value[index] = latency; 1543 return true; 1544 1545 case HID_DG_SURFACESWITCH: 1546 field->value[index] = surface_switch; 1547 return true; 1548 1549 case HID_DG_BUTTONSWITCH: 1550 field->value[index] = button_switch; 1551 return true; 1552 } 1553 1554 return false; /* no need to update the report */ 1555 } 1556 1557 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1558 bool surface_switch, bool button_switch) 1559 { 1560 struct hid_report_enum *rep_enum; 1561 struct hid_report *rep; 1562 struct hid_usage *usage; 1563 int i, j; 1564 bool update_report; 1565 bool inputmode_found = false; 1566 1567 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1568 list_for_each_entry(rep, &rep_enum->report_list, list) { 1569 update_report = false; 1570 1571 for (i = 0; i < rep->maxfield; i++) { 1572 /* Ignore if report count is out of bounds. */ 1573 if (rep->field[i]->report_count < 1) 1574 continue; 1575 1576 for (j = 0; j < rep->field[i]->maxusage; j++) { 1577 usage = &rep->field[i]->usage[j]; 1578 1579 if (mt_need_to_apply_feature(hdev, 1580 rep->field[i], 1581 usage, 1582 latency, 1583 surface_switch, 1584 button_switch, 1585 &inputmode_found)) 1586 update_report = true; 1587 } 1588 } 1589 1590 if (update_report) 1591 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1592 } 1593 } 1594 1595 static void mt_post_parse_default_settings(struct mt_device *td, 1596 struct mt_application *app) 1597 { 1598 __s32 quirks = app->quirks; 1599 1600 /* unknown serial device needs special quirks */ 1601 if (list_is_singular(&app->mt_usages)) { 1602 quirks |= MT_QUIRK_ALWAYS_VALID; 1603 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1604 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1605 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1606 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1607 } 1608 1609 app->quirks = quirks; 1610 } 1611 1612 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1613 { 1614 if (!app->have_contact_count) 1615 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1616 } 1617 1618 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1619 { 1620 struct mt_device *td = hid_get_drvdata(hdev); 1621 const char *suffix = NULL; 1622 struct mt_report_data *rdata; 1623 struct mt_application *mt_application = NULL; 1624 struct hid_report *report; 1625 int ret; 1626 1627 list_for_each_entry(report, &hi->reports, hidinput_list) { 1628 rdata = mt_find_report_data(td, report); 1629 if (!rdata) { 1630 hid_err(hdev, "failed to allocate data for report\n"); 1631 return -ENOMEM; 1632 } 1633 1634 mt_application = rdata->application; 1635 1636 if (rdata->is_mt_collection) { 1637 ret = mt_touch_input_configured(hdev, hi, 1638 mt_application); 1639 if (ret) 1640 return ret; 1641 } 1642 } 1643 1644 switch (hi->application) { 1645 case HID_GD_KEYBOARD: 1646 case HID_GD_KEYPAD: 1647 case HID_GD_MOUSE: 1648 case HID_DG_TOUCHPAD: 1649 case HID_GD_SYSTEM_CONTROL: 1650 case HID_CP_CONSUMER_CONTROL: 1651 case HID_GD_WIRELESS_RADIO_CTLS: 1652 case HID_GD_SYSTEM_MULTIAXIS: 1653 /* already handled by hid core */ 1654 break; 1655 case HID_DG_TOUCHSCREEN: 1656 /* we do not set suffix = "Touchscreen" */ 1657 hi->input->name = hdev->name; 1658 break; 1659 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1660 suffix = "Custom Media Keys"; 1661 break; 1662 case HID_DG_STYLUS: 1663 /* force BTN_STYLUS to allow tablet matching in udev */ 1664 __set_bit(BTN_STYLUS, hi->input->keybit); 1665 break; 1666 default: 1667 suffix = "UNKNOWN"; 1668 break; 1669 } 1670 1671 if (suffix) 1672 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1673 "%s %s", hdev->name, suffix); 1674 1675 return 0; 1676 } 1677 1678 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1679 { 1680 if (field->usage[0].hid != usage || 1681 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1682 return; 1683 1684 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1685 field->flags |= HID_MAIN_ITEM_VARIABLE; 1686 } 1687 1688 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1689 { 1690 struct hid_report *report; 1691 int i; 1692 1693 list_for_each_entry(report, 1694 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1695 list) { 1696 1697 if (!report->maxfield) 1698 continue; 1699 1700 for (i = 0; i < report->maxfield; i++) 1701 if (report->field[i]->maxusage >= 1) 1702 mt_fix_const_field(report->field[i], usage); 1703 } 1704 } 1705 1706 static void mt_release_contacts(struct hid_device *hid) 1707 { 1708 struct hid_input *hidinput; 1709 struct mt_application *application; 1710 struct mt_device *td = hid_get_drvdata(hid); 1711 1712 list_for_each_entry(hidinput, &hid->inputs, list) { 1713 struct input_dev *input_dev = hidinput->input; 1714 struct input_mt *mt = input_dev->mt; 1715 int i; 1716 1717 if (mt) { 1718 for (i = 0; i < mt->num_slots; i++) { 1719 input_mt_slot(input_dev, i); 1720 input_mt_report_slot_inactive(input_dev); 1721 } 1722 input_mt_sync_frame(input_dev); 1723 input_sync(input_dev); 1724 } 1725 } 1726 1727 list_for_each_entry(application, &td->applications, list) { 1728 application->num_received = 0; 1729 } 1730 } 1731 1732 static void mt_expired_timeout(struct timer_list *t) 1733 { 1734 struct mt_device *td = from_timer(td, t, release_timer); 1735 struct hid_device *hdev = td->hdev; 1736 1737 /* 1738 * An input report came in just before we release the sticky fingers, 1739 * it will take care of the sticky fingers. 1740 */ 1741 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1742 return; 1743 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1744 mt_release_contacts(hdev); 1745 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1746 } 1747 1748 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1749 { 1750 int ret, i; 1751 struct mt_device *td; 1752 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1753 1754 for (i = 0; mt_classes[i].name ; i++) { 1755 if (id->driver_data == mt_classes[i].name) { 1756 mtclass = &(mt_classes[i]); 1757 break; 1758 } 1759 } 1760 1761 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1762 if (!td) { 1763 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1764 return -ENOMEM; 1765 } 1766 td->hdev = hdev; 1767 td->mtclass = *mtclass; 1768 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1769 hid_set_drvdata(hdev, td); 1770 1771 INIT_LIST_HEAD(&td->applications); 1772 INIT_LIST_HEAD(&td->reports); 1773 1774 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1775 td->serial_maybe = true; 1776 1777 1778 /* Orientation is inverted if the X or Y axes are 1779 * flipped, but normalized if both are inverted. 1780 */ 1781 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1782 !((hdev->quirks & HID_QUIRK_X_INVERT) 1783 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1784 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1785 1786 /* This allows the driver to correctly support devices 1787 * that emit events over several HID messages. 1788 */ 1789 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1790 1791 /* 1792 * This allows the driver to handle different input sensors 1793 * that emits events through different applications on the same HID 1794 * device. 1795 */ 1796 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1797 1798 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1799 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1800 1801 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1802 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1803 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1804 } 1805 1806 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1807 1808 ret = hid_parse(hdev); 1809 if (ret != 0) 1810 return ret; 1811 1812 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1813 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1814 1815 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1816 if (ret) 1817 return ret; 1818 1819 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1820 if (ret) 1821 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1822 hdev->name); 1823 1824 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1825 1826 return 0; 1827 } 1828 1829 #ifdef CONFIG_PM 1830 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1831 { 1832 struct mt_device *td = hid_get_drvdata(hdev); 1833 1834 /* High latency is desirable for power savings during S3/S0ix */ 1835 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1836 !hid_hw_may_wakeup(hdev)) 1837 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false); 1838 else 1839 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true); 1840 1841 return 0; 1842 } 1843 1844 static int mt_reset_resume(struct hid_device *hdev) 1845 { 1846 mt_release_contacts(hdev); 1847 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1848 return 0; 1849 } 1850 1851 static int mt_resume(struct hid_device *hdev) 1852 { 1853 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1854 * It should be safe to send it to other devices too. 1855 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1856 1857 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1858 1859 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); 1860 1861 return 0; 1862 } 1863 #endif 1864 1865 static void mt_remove(struct hid_device *hdev) 1866 { 1867 struct mt_device *td = hid_get_drvdata(hdev); 1868 1869 del_timer_sync(&td->release_timer); 1870 1871 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1872 hid_hw_stop(hdev); 1873 } 1874 1875 /* 1876 * This list contains only: 1877 * - VID/PID of products not working with the default multitouch handling 1878 * - 2 generic rules. 1879 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1880 */ 1881 static const struct hid_device_id mt_devices[] = { 1882 1883 /* 3M panels */ 1884 { .driver_data = MT_CLS_3M, 1885 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1886 USB_DEVICE_ID_3M1968) }, 1887 { .driver_data = MT_CLS_3M, 1888 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1889 USB_DEVICE_ID_3M2256) }, 1890 { .driver_data = MT_CLS_3M, 1891 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1892 USB_DEVICE_ID_3M3266) }, 1893 1894 /* Anton devices */ 1895 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1896 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1897 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1898 1899 /* Asus T101HA */ 1900 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 1901 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1902 USB_VENDOR_ID_ASUSTEK, 1903 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 1904 1905 /* Asus T304UA */ 1906 { .driver_data = MT_CLS_ASUS, 1907 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1908 USB_VENDOR_ID_ASUSTEK, 1909 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1910 1911 /* Atmel panels */ 1912 { .driver_data = MT_CLS_SERIAL, 1913 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1914 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1915 1916 /* Baanto multitouch devices */ 1917 { .driver_data = MT_CLS_NSMU, 1918 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1919 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1920 1921 /* Cando panels */ 1922 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1923 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1924 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1925 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1926 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1927 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1928 1929 /* Chunghwa Telecom touch panels */ 1930 { .driver_data = MT_CLS_NSMU, 1931 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1932 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1933 1934 /* CJTouch panels */ 1935 { .driver_data = MT_CLS_NSMU, 1936 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1937 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1938 { .driver_data = MT_CLS_NSMU, 1939 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1940 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1941 1942 /* CVTouch panels */ 1943 { .driver_data = MT_CLS_NSMU, 1944 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1945 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1946 1947 /* eGalax devices (SAW) */ 1948 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1949 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1950 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 1951 1952 /* eGalax devices (resistive) */ 1953 { .driver_data = MT_CLS_EGALAX, 1954 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1955 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1956 { .driver_data = MT_CLS_EGALAX, 1957 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1958 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1959 1960 /* eGalax devices (capacitive) */ 1961 { .driver_data = MT_CLS_EGALAX_SERIAL, 1962 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1963 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1964 { .driver_data = MT_CLS_EGALAX, 1965 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1966 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1967 { .driver_data = MT_CLS_EGALAX_SERIAL, 1968 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1969 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1970 { .driver_data = MT_CLS_EGALAX_SERIAL, 1971 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1972 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1973 { .driver_data = MT_CLS_EGALAX_SERIAL, 1974 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1975 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1976 { .driver_data = MT_CLS_EGALAX_SERIAL, 1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1979 { .driver_data = MT_CLS_EGALAX, 1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1982 { .driver_data = MT_CLS_EGALAX, 1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1985 { .driver_data = MT_CLS_EGALAX_SERIAL, 1986 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1987 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1988 { .driver_data = MT_CLS_EGALAX, 1989 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1990 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1991 { .driver_data = MT_CLS_EGALAX, 1992 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1993 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1994 { .driver_data = MT_CLS_EGALAX, 1995 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1996 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1997 { .driver_data = MT_CLS_EGALAX, 1998 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1999 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2000 { .driver_data = MT_CLS_EGALAX_SERIAL, 2001 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2002 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2003 { .driver_data = MT_CLS_EGALAX_SERIAL, 2004 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2005 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2006 { .driver_data = MT_CLS_EGALAX_SERIAL, 2007 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2008 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2009 { .driver_data = MT_CLS_EGALAX, 2010 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2011 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2012 2013 /* Elan devices */ 2014 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2015 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2016 USB_VENDOR_ID_ELAN, 0x313a) }, 2017 2018 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2019 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2020 USB_VENDOR_ID_ELAN, 0x3148) }, 2021 2022 /* Elitegroup panel */ 2023 { .driver_data = MT_CLS_SERIAL, 2024 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2025 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2026 2027 /* Flatfrog Panels */ 2028 { .driver_data = MT_CLS_FLATFROG, 2029 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2030 USB_DEVICE_ID_MULTITOUCH_3200) }, 2031 2032 /* FocalTech Panels */ 2033 { .driver_data = MT_CLS_SERIAL, 2034 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2035 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2036 2037 /* GeneralTouch panel */ 2038 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2039 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2040 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2041 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2042 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2043 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2044 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2045 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2046 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2047 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2048 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2049 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2050 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2051 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2052 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2053 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2054 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2055 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2056 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2057 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2058 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2059 2060 /* Gametel game controller */ 2061 { .driver_data = MT_CLS_NSMU, 2062 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2063 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2064 2065 /* Goodix GT7868Q devices */ 2066 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2067 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2068 I2C_DEVICE_ID_GOODIX_01E8) }, 2069 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2070 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2071 I2C_DEVICE_ID_GOODIX_01E8) }, 2072 2073 /* GoodTouch panels */ 2074 { .driver_data = MT_CLS_NSMU, 2075 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2076 USB_DEVICE_ID_GOODTOUCH_000f) }, 2077 2078 /* Hanvon panels */ 2079 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2080 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2081 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2082 2083 /* HONOR GLO-GXXX panel */ 2084 { .driver_data = MT_CLS_VTL, 2085 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2086 0x347d, 0x7853) }, 2087 2088 /* Ilitek dual touch panel */ 2089 { .driver_data = MT_CLS_NSMU, 2090 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2091 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2092 2093 /* LG Melfas panel */ 2094 { .driver_data = MT_CLS_LG, 2095 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2096 USB_DEVICE_ID_LG_MELFAS_MT) }, 2097 { .driver_data = MT_CLS_LG, 2098 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2099 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2100 2101 /* Lenovo X1 TAB Gen 2 */ 2102 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2103 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2104 USB_VENDOR_ID_LENOVO, 2105 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2106 2107 /* Lenovo X1 TAB Gen 3 */ 2108 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2109 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2110 USB_VENDOR_ID_LENOVO, 2111 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2112 2113 /* Lenovo X12 TAB Gen 1 */ 2114 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2115 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2116 USB_VENDOR_ID_LENOVO, 2117 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2118 2119 /* Logitech devices */ 2120 { .driver_data = MT_CLS_NSMU, 2121 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2122 USB_VENDOR_ID_LOGITECH, 2123 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2124 2125 /* MosArt panels */ 2126 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2127 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2128 USB_DEVICE_ID_ASUS_T91MT)}, 2129 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2130 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2131 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2132 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2133 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2134 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2135 2136 /* Novatek Panel */ 2137 { .driver_data = MT_CLS_NSMU, 2138 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2139 USB_DEVICE_ID_NOVATEK_PCT) }, 2140 2141 /* Ntrig Panel */ 2142 { .driver_data = MT_CLS_NSMU, 2143 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2144 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2145 2146 /* Panasonic panels */ 2147 { .driver_data = MT_CLS_PANASONIC, 2148 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2149 USB_DEVICE_ID_PANABOARD_UBT780) }, 2150 { .driver_data = MT_CLS_PANASONIC, 2151 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2152 USB_DEVICE_ID_PANABOARD_UBT880) }, 2153 2154 /* PixArt optical touch screen */ 2155 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2156 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2157 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2158 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2159 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2160 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2161 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2162 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2163 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2164 2165 /* PixCir-based panels */ 2166 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2167 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2168 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2169 2170 /* Quanta-based panels */ 2171 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2172 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2173 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2174 2175 /* Razer touchpads */ 2176 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2177 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2178 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2179 2180 /* Smart Tech panels */ 2181 { .driver_data = MT_CLS_SMART_TECH, 2182 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2183 2184 /* Stantum panels */ 2185 { .driver_data = MT_CLS_CONFIDENCE, 2186 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2187 USB_DEVICE_ID_MTP_STM)}, 2188 2189 /* Synaptics devices */ 2190 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2191 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2192 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2193 2194 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2195 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2196 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2197 2198 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2199 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2200 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2201 2202 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2203 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2204 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2205 2206 /* TopSeed panels */ 2207 { .driver_data = MT_CLS_TOPSEED, 2208 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2209 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2210 2211 /* Touch International panels */ 2212 { .driver_data = MT_CLS_NSMU, 2213 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2214 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2215 2216 /* Unitec panels */ 2217 { .driver_data = MT_CLS_NSMU, 2218 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2219 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2220 { .driver_data = MT_CLS_NSMU, 2221 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2222 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2223 2224 /* VTL panels */ 2225 { .driver_data = MT_CLS_VTL, 2226 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2227 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2228 2229 /* Winbond Electronics Corp. */ 2230 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2231 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2232 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2233 2234 /* Wistron panels */ 2235 { .driver_data = MT_CLS_NSMU, 2236 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2237 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2238 2239 /* XAT */ 2240 { .driver_data = MT_CLS_NSMU, 2241 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2242 USB_DEVICE_ID_XAT_CSR) }, 2243 2244 /* Xiroku */ 2245 { .driver_data = MT_CLS_NSMU, 2246 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2247 USB_DEVICE_ID_XIROKU_SPX) }, 2248 { .driver_data = MT_CLS_NSMU, 2249 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2250 USB_DEVICE_ID_XIROKU_MPX) }, 2251 { .driver_data = MT_CLS_NSMU, 2252 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2253 USB_DEVICE_ID_XIROKU_CSR) }, 2254 { .driver_data = MT_CLS_NSMU, 2255 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2256 USB_DEVICE_ID_XIROKU_SPX1) }, 2257 { .driver_data = MT_CLS_NSMU, 2258 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2259 USB_DEVICE_ID_XIROKU_MPX1) }, 2260 { .driver_data = MT_CLS_NSMU, 2261 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2262 USB_DEVICE_ID_XIROKU_CSR1) }, 2263 { .driver_data = MT_CLS_NSMU, 2264 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2265 USB_DEVICE_ID_XIROKU_SPX2) }, 2266 { .driver_data = MT_CLS_NSMU, 2267 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2268 USB_DEVICE_ID_XIROKU_MPX2) }, 2269 { .driver_data = MT_CLS_NSMU, 2270 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2271 USB_DEVICE_ID_XIROKU_CSR2) }, 2272 2273 /* Google MT devices */ 2274 { .driver_data = MT_CLS_GOOGLE, 2275 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2276 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2277 { .driver_data = MT_CLS_GOOGLE, 2278 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2279 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2280 2281 /* Generic MT device */ 2282 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2283 2284 /* Generic Win 8 certified MT device */ 2285 { .driver_data = MT_CLS_WIN_8, 2286 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2287 HID_ANY_ID, HID_ANY_ID) }, 2288 { } 2289 }; 2290 MODULE_DEVICE_TABLE(hid, mt_devices); 2291 2292 static const struct hid_usage_id mt_grabbed_usages[] = { 2293 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2294 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2295 }; 2296 2297 static struct hid_driver mt_driver = { 2298 .name = "hid-multitouch", 2299 .id_table = mt_devices, 2300 .probe = mt_probe, 2301 .remove = mt_remove, 2302 .input_mapping = mt_input_mapping, 2303 .input_mapped = mt_input_mapped, 2304 .input_configured = mt_input_configured, 2305 .feature_mapping = mt_feature_mapping, 2306 .usage_table = mt_grabbed_usages, 2307 .event = mt_event, 2308 .report_fixup = mt_report_fixup, 2309 .report = mt_report, 2310 #ifdef CONFIG_PM 2311 .suspend = mt_suspend, 2312 .reset_resume = mt_reset_resume, 2313 .resume = mt_resume, 2314 #endif 2315 }; 2316 module_hid_driver(mt_driver); 2317