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/bits.h> 35 #include <linux/device.h> 36 #include <linux/hid.h> 37 #include <linux/module.h> 38 #include <linux/slab.h> 39 #include <linux/input/mt.h> 40 #include <linux/jiffies.h> 41 #include <linux/string.h> 42 #include <linux/timer.h> 43 44 45 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 46 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 47 MODULE_DESCRIPTION("HID multitouch panels"); 48 MODULE_LICENSE("GPL"); 49 50 #include "hid-ids.h" 51 52 /* quirks to control the device */ 53 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 54 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 55 #define MT_QUIRK_CYPRESS BIT(2) 56 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 57 #define MT_QUIRK_ALWAYS_VALID BIT(4) 58 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 59 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 60 #define MT_QUIRK_CONFIDENCE BIT(7) 61 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 62 #define MT_QUIRK_NO_AREA BIT(9) 63 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 64 #define MT_QUIRK_HOVERING BIT(11) 65 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 66 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 67 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 68 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 69 #define MT_QUIRK_STICKY_FINGERS BIT(16) 70 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 71 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 72 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 73 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 74 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 75 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 76 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 77 78 #define MT_INPUTMODE_TOUCHSCREEN 0x02 79 #define MT_INPUTMODE_TOUCHPAD 0x03 80 81 #define MT_BUTTONTYPE_CLICKPAD 0 82 83 enum latency_mode { 84 HID_LATENCY_NORMAL = 0, 85 HID_LATENCY_HIGH = 1, 86 }; 87 88 enum report_mode { 89 TOUCHPAD_REPORT_NONE = 0, 90 TOUCHPAD_REPORT_BUTTONS = BIT(0), 91 TOUCHPAD_REPORT_CONTACTS = BIT(1), 92 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 93 }; 94 95 #define MT_IO_FLAGS_RUNNING 0 96 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 97 #define MT_IO_FLAGS_PENDING_SLOTS 2 98 99 static const bool mtrue = true; /* default for true */ 100 static const bool mfalse; /* default for false */ 101 static const __s32 mzero; /* default for 0 */ 102 103 #define DEFAULT_TRUE ((void *)&mtrue) 104 #define DEFAULT_FALSE ((void *)&mfalse) 105 #define DEFAULT_ZERO ((void *)&mzero) 106 107 struct mt_usages { 108 struct list_head list; 109 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 110 __s32 *contactid; /* the device ContactID assigned to this slot */ 111 bool *tip_state; /* is the touch valid? */ 112 bool *inrange_state; /* is the finger in proximity of the sensor? */ 113 bool *confidence_state; /* is the touch made by a finger? */ 114 }; 115 116 struct mt_application { 117 struct list_head list; 118 unsigned int application; 119 unsigned int report_id; 120 struct list_head mt_usages; /* mt usages list */ 121 122 __s32 quirks; 123 124 __s32 *scantime; /* scantime reported */ 125 __s32 scantime_logical_max; /* max value for raw scantime */ 126 127 __s32 *raw_cc; /* contact count in the report */ 128 int left_button_state; /* left button state */ 129 unsigned int mt_flags; /* flags to pass to input-mt */ 130 131 unsigned long *pending_palm_slots; /* slots where we reported palm 132 * and need to release */ 133 134 __u8 num_received; /* how many contacts we received */ 135 __u8 num_expected; /* expected last contact index */ 136 __u8 buttons_count; /* number of physical buttons per touchpad */ 137 __u8 touches_by_report; /* how many touches are present in one report: 138 * 1 means we should use a serial protocol 139 * > 1 means hybrid (multitouch) protocol 140 */ 141 142 unsigned long jiffies; /* the frame's jiffies */ 143 int timestamp; /* the timestamp to be sent */ 144 int prev_scantime; /* scantime reported previously */ 145 146 bool have_contact_count; 147 }; 148 149 struct mt_class { 150 __s32 name; /* MT_CLS */ 151 __s32 quirks; 152 __s32 sn_move; /* Signal/noise ratio for move events */ 153 __s32 sn_width; /* Signal/noise ratio for width events */ 154 __s32 sn_height; /* Signal/noise ratio for height events */ 155 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 156 __u8 maxcontacts; 157 bool is_indirect; /* true for touchpads */ 158 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 159 }; 160 161 struct mt_report_data { 162 struct list_head list; 163 struct hid_report *report; 164 struct mt_application *application; 165 bool is_mt_collection; 166 }; 167 168 struct mt_device { 169 struct mt_class mtclass; /* our mt device class */ 170 struct timer_list release_timer; /* to release sticky fingers */ 171 struct hid_device *hdev; /* hid_device we're attached to */ 172 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 173 __u8 inputmode_value; /* InputMode HID feature value */ 174 __u8 maxcontacts; 175 bool is_buttonpad; /* is this device a button pad? */ 176 bool serial_maybe; /* need to check for serial protocol */ 177 178 struct list_head applications; 179 struct list_head reports; 180 }; 181 182 static void mt_post_parse_default_settings(struct mt_device *td, 183 struct mt_application *app); 184 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 185 186 /* classes of device behavior */ 187 #define MT_CLS_DEFAULT 0x0001 188 189 #define MT_CLS_SERIAL 0x0002 190 #define MT_CLS_CONFIDENCE 0x0003 191 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 192 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 193 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 194 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 195 /* reserved 0x0008 */ 196 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 197 #define MT_CLS_NSMU 0x000a 198 /* reserved 0x0010 */ 199 /* reserved 0x0011 */ 200 #define MT_CLS_WIN_8 0x0012 201 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 202 /* reserved 0x0014 */ 203 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 204 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 205 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 206 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 207 208 /* vendor specific classes */ 209 #define MT_CLS_3M 0x0101 210 /* reserved 0x0102 */ 211 #define MT_CLS_EGALAX 0x0103 212 #define MT_CLS_EGALAX_SERIAL 0x0104 213 #define MT_CLS_TOPSEED 0x0105 214 #define MT_CLS_PANASONIC 0x0106 215 #define MT_CLS_FLATFROG 0x0107 216 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 217 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 218 #define MT_CLS_LG 0x010a 219 #define MT_CLS_ASUS 0x010b 220 #define MT_CLS_VTL 0x0110 221 #define MT_CLS_GOOGLE 0x0111 222 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 223 #define MT_CLS_SMART_TECH 0x0113 224 #define MT_CLS_APPLE_TOUCHBAR 0x0114 225 #define MT_CLS_SIS 0x0457 226 227 #define MT_DEFAULT_MAXCONTACT 10 228 #define MT_MAX_MAXCONTACT 250 229 230 /* 231 * Resync device and local timestamps after that many microseconds without 232 * receiving data. 233 */ 234 #define MAX_TIMESTAMP_INTERVAL 1000000 235 236 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 237 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 238 239 /* 240 * these device-dependent functions determine what slot corresponds 241 * to a valid contact that was just read. 242 */ 243 244 static int cypress_compute_slot(struct mt_application *application, 245 struct mt_usages *slot) 246 { 247 if (*slot->contactid != 0 || application->num_received == 0) 248 return *slot->contactid; 249 else 250 return -1; 251 } 252 253 static const struct mt_class mt_classes[] = { 254 { .name = MT_CLS_DEFAULT, 255 .quirks = MT_QUIRK_ALWAYS_VALID | 256 MT_QUIRK_CONTACT_CNT_ACCURATE }, 257 { .name = MT_CLS_NSMU, 258 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 259 { .name = MT_CLS_SERIAL, 260 .quirks = MT_QUIRK_ALWAYS_VALID}, 261 { .name = MT_CLS_CONFIDENCE, 262 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 263 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 264 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 265 MT_QUIRK_SLOT_IS_CONTACTID }, 266 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 267 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 268 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 269 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 270 .quirks = MT_QUIRK_VALID_IS_INRANGE | 271 MT_QUIRK_SLOT_IS_CONTACTID, 272 .maxcontacts = 2 }, 273 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 274 .quirks = MT_QUIRK_VALID_IS_INRANGE | 275 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 276 .maxcontacts = 2 }, 277 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 278 .quirks = MT_QUIRK_VALID_IS_INRANGE | 279 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 280 { .name = MT_CLS_WIN_8, 281 .quirks = MT_QUIRK_ALWAYS_VALID | 282 MT_QUIRK_IGNORE_DUPLICATES | 283 MT_QUIRK_HOVERING | 284 MT_QUIRK_CONTACT_CNT_ACCURATE | 285 MT_QUIRK_STICKY_FINGERS | 286 MT_QUIRK_WIN8_PTP_BUTTONS, 287 .export_all_inputs = true }, 288 { .name = MT_CLS_EXPORT_ALL_INPUTS, 289 .quirks = MT_QUIRK_ALWAYS_VALID | 290 MT_QUIRK_CONTACT_CNT_ACCURATE, 291 .export_all_inputs = true }, 292 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 293 .quirks = MT_QUIRK_ALWAYS_VALID | 294 MT_QUIRK_IGNORE_DUPLICATES | 295 MT_QUIRK_HOVERING | 296 MT_QUIRK_CONTACT_CNT_ACCURATE | 297 MT_QUIRK_STICKY_FINGERS | 298 MT_QUIRK_WIN8_PTP_BUTTONS | 299 MT_QUIRK_FORCE_MULTI_INPUT, 300 .export_all_inputs = true }, 301 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 302 .quirks = 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_FORCE_MULTI_INPUT | 308 MT_QUIRK_NOT_SEEN_MEANS_UP, 309 .export_all_inputs = true }, 310 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 311 .quirks = MT_QUIRK_ALWAYS_VALID | 312 MT_QUIRK_IGNORE_DUPLICATES | 313 MT_QUIRK_HOVERING | 314 MT_QUIRK_CONTACT_CNT_ACCURATE | 315 MT_QUIRK_STICKY_FINGERS | 316 MT_QUIRK_WIN8_PTP_BUTTONS | 317 MT_QUIRK_DISABLE_WAKEUP, 318 .export_all_inputs = true }, 319 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 320 .quirks = MT_QUIRK_ALWAYS_VALID | 321 MT_QUIRK_IGNORE_DUPLICATES | 322 MT_QUIRK_HOVERING | 323 MT_QUIRK_CONTACT_CNT_ACCURATE | 324 MT_QUIRK_WIN8_PTP_BUTTONS, 325 .export_all_inputs = true }, 326 327 /* 328 * vendor specific classes 329 */ 330 { .name = MT_CLS_3M, 331 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 332 MT_QUIRK_SLOT_IS_CONTACTID | 333 MT_QUIRK_TOUCH_SIZE_SCALING, 334 .sn_move = 2048, 335 .sn_width = 128, 336 .sn_height = 128, 337 .maxcontacts = 60, 338 }, 339 { .name = MT_CLS_EGALAX, 340 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 341 MT_QUIRK_VALID_IS_INRANGE, 342 .sn_move = 4096, 343 .sn_pressure = 32, 344 }, 345 { .name = MT_CLS_EGALAX_SERIAL, 346 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 347 MT_QUIRK_ALWAYS_VALID, 348 .sn_move = 4096, 349 .sn_pressure = 32, 350 }, 351 { .name = MT_CLS_TOPSEED, 352 .quirks = MT_QUIRK_ALWAYS_VALID, 353 .is_indirect = true, 354 .maxcontacts = 2, 355 }, 356 { .name = MT_CLS_PANASONIC, 357 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 358 .maxcontacts = 4 }, 359 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 360 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 361 MT_QUIRK_VALID_IS_INRANGE | 362 MT_QUIRK_SLOT_IS_CONTACTID, 363 .maxcontacts = 2 364 }, 365 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 366 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 367 MT_QUIRK_SLOT_IS_CONTACTID 368 }, 369 370 { .name = MT_CLS_FLATFROG, 371 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 372 MT_QUIRK_NO_AREA, 373 .sn_move = 2048, 374 .maxcontacts = 40, 375 }, 376 { .name = MT_CLS_LG, 377 .quirks = MT_QUIRK_ALWAYS_VALID | 378 MT_QUIRK_FIX_CONST_CONTACT_ID | 379 MT_QUIRK_IGNORE_DUPLICATES | 380 MT_QUIRK_HOVERING | 381 MT_QUIRK_CONTACT_CNT_ACCURATE }, 382 { .name = MT_CLS_ASUS, 383 .quirks = MT_QUIRK_ALWAYS_VALID | 384 MT_QUIRK_CONTACT_CNT_ACCURATE | 385 MT_QUIRK_ASUS_CUSTOM_UP }, 386 { .name = MT_CLS_VTL, 387 .quirks = MT_QUIRK_ALWAYS_VALID | 388 MT_QUIRK_CONTACT_CNT_ACCURATE | 389 MT_QUIRK_FORCE_GET_FEATURE, 390 }, 391 { .name = MT_CLS_GOOGLE, 392 .quirks = MT_QUIRK_ALWAYS_VALID | 393 MT_QUIRK_CONTACT_CNT_ACCURATE | 394 MT_QUIRK_SLOT_IS_CONTACTID | 395 MT_QUIRK_HOVERING 396 }, 397 { .name = MT_CLS_RAZER_BLADE_STEALTH, 398 .quirks = MT_QUIRK_ALWAYS_VALID | 399 MT_QUIRK_IGNORE_DUPLICATES | 400 MT_QUIRK_HOVERING | 401 MT_QUIRK_CONTACT_CNT_ACCURATE | 402 MT_QUIRK_WIN8_PTP_BUTTONS, 403 }, 404 { .name = MT_CLS_SMART_TECH, 405 .quirks = MT_QUIRK_ALWAYS_VALID | 406 MT_QUIRK_IGNORE_DUPLICATES | 407 MT_QUIRK_CONTACT_CNT_ACCURATE | 408 MT_QUIRK_SEPARATE_APP_REPORT, 409 }, 410 { .name = MT_CLS_APPLE_TOUCHBAR, 411 .quirks = MT_QUIRK_HOVERING | 412 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 413 MT_QUIRK_APPLE_TOUCHBAR, 414 .maxcontacts = 11, 415 }, 416 { .name = MT_CLS_SIS, 417 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 418 MT_QUIRK_ALWAYS_VALID | 419 MT_QUIRK_CONTACT_CNT_ACCURATE, 420 }, 421 { } 422 }; 423 424 static ssize_t mt_show_quirks(struct device *dev, 425 struct device_attribute *attr, 426 char *buf) 427 { 428 struct hid_device *hdev = to_hid_device(dev); 429 struct mt_device *td = hid_get_drvdata(hdev); 430 431 return sprintf(buf, "%u\n", td->mtclass.quirks); 432 } 433 434 static ssize_t mt_set_quirks(struct device *dev, 435 struct device_attribute *attr, 436 const char *buf, size_t count) 437 { 438 struct hid_device *hdev = to_hid_device(dev); 439 struct mt_device *td = hid_get_drvdata(hdev); 440 struct mt_application *application; 441 442 unsigned long val; 443 444 if (kstrtoul(buf, 0, &val)) 445 return -EINVAL; 446 447 td->mtclass.quirks = val; 448 449 list_for_each_entry(application, &td->applications, list) { 450 application->quirks = val; 451 if (!application->have_contact_count) 452 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 453 } 454 455 return count; 456 } 457 458 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 459 460 static struct attribute *sysfs_attrs[] = { 461 &dev_attr_quirks.attr, 462 NULL 463 }; 464 465 static const struct attribute_group mt_attribute_group = { 466 .attrs = sysfs_attrs 467 }; 468 469 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 470 { 471 int ret; 472 u32 size = hid_report_len(report); 473 u8 *buf; 474 475 /* 476 * Do not fetch the feature report if the device has been explicitly 477 * marked as non-capable. 478 */ 479 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 480 return; 481 482 buf = hid_alloc_report_buf(report, GFP_KERNEL); 483 if (!buf) 484 return; 485 486 ret = hid_hw_raw_request(hdev, report->id, buf, size, 487 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 488 if (ret < 0) { 489 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 490 report->id); 491 } else { 492 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 493 size, 0); 494 if (ret) 495 dev_warn(&hdev->dev, "failed to report feature\n"); 496 } 497 498 kfree(buf); 499 } 500 501 static void mt_feature_mapping(struct hid_device *hdev, 502 struct hid_field *field, struct hid_usage *usage) 503 { 504 struct mt_device *td = hid_get_drvdata(hdev); 505 506 switch (usage->hid) { 507 case HID_DG_CONTACTMAX: 508 mt_get_feature(hdev, field->report); 509 510 td->maxcontacts = field->value[0]; 511 if (!td->maxcontacts && 512 field->logical_maximum <= MT_MAX_MAXCONTACT) 513 td->maxcontacts = field->logical_maximum; 514 if (td->mtclass.maxcontacts) 515 /* check if the maxcontacts is given by the class */ 516 td->maxcontacts = td->mtclass.maxcontacts; 517 518 break; 519 case HID_DG_BUTTONTYPE: 520 if (usage->usage_index >= field->report_count) { 521 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 522 break; 523 } 524 525 mt_get_feature(hdev, field->report); 526 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 527 td->is_buttonpad = true; 528 529 break; 530 case 0xff0000c5: 531 /* Retrieve the Win8 blob once to enable some devices */ 532 if (usage->usage_index == 0) 533 mt_get_feature(hdev, field->report); 534 break; 535 } 536 } 537 538 static void set_abs(struct input_dev *input, unsigned int code, 539 struct hid_field *field, int snratio) 540 { 541 int fmin = field->logical_minimum; 542 int fmax = field->logical_maximum; 543 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 544 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 545 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 546 } 547 548 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 549 struct mt_application *application) 550 { 551 struct mt_usages *usage; 552 553 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 554 if (!usage) 555 return NULL; 556 557 /* set some defaults so we do not need to check for null pointers */ 558 usage->x = DEFAULT_ZERO; 559 usage->y = DEFAULT_ZERO; 560 usage->cx = DEFAULT_ZERO; 561 usage->cy = DEFAULT_ZERO; 562 usage->p = DEFAULT_ZERO; 563 usage->w = DEFAULT_ZERO; 564 usage->h = DEFAULT_ZERO; 565 usage->a = DEFAULT_ZERO; 566 usage->contactid = DEFAULT_ZERO; 567 usage->tip_state = DEFAULT_FALSE; 568 usage->inrange_state = DEFAULT_FALSE; 569 usage->confidence_state = DEFAULT_TRUE; 570 571 list_add_tail(&usage->list, &application->mt_usages); 572 573 return usage; 574 } 575 576 static struct mt_application *mt_allocate_application(struct mt_device *td, 577 struct hid_report *report) 578 { 579 unsigned int application = report->application; 580 struct mt_application *mt_application; 581 582 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 583 GFP_KERNEL); 584 if (!mt_application) 585 return NULL; 586 587 mt_application->application = application; 588 INIT_LIST_HEAD(&mt_application->mt_usages); 589 590 if (application == HID_DG_TOUCHSCREEN) 591 mt_application->mt_flags |= INPUT_MT_DIRECT; 592 593 /* 594 * Model touchscreens providing buttons as touchpads. 595 */ 596 if (application == HID_DG_TOUCHPAD) { 597 mt_application->mt_flags |= INPUT_MT_POINTER; 598 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 599 } 600 601 mt_application->scantime = DEFAULT_ZERO; 602 mt_application->raw_cc = DEFAULT_ZERO; 603 mt_application->quirks = td->mtclass.quirks; 604 mt_application->report_id = report->id; 605 606 list_add_tail(&mt_application->list, &td->applications); 607 608 return mt_application; 609 } 610 611 static struct mt_application *mt_find_application(struct mt_device *td, 612 struct hid_report *report) 613 { 614 unsigned int application = report->application; 615 struct mt_application *tmp, *mt_application = NULL; 616 617 list_for_each_entry(tmp, &td->applications, list) { 618 if (application == tmp->application) { 619 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 620 tmp->report_id == report->id) { 621 mt_application = tmp; 622 break; 623 } 624 } 625 } 626 627 if (!mt_application) 628 mt_application = mt_allocate_application(td, report); 629 630 return mt_application; 631 } 632 633 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 634 struct hid_report *report) 635 { 636 struct mt_class *cls = &td->mtclass; 637 struct mt_report_data *rdata; 638 struct hid_field *field; 639 int r, n; 640 641 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 642 if (!rdata) 643 return NULL; 644 645 rdata->report = report; 646 rdata->application = mt_find_application(td, report); 647 648 if (!rdata->application) { 649 devm_kfree(&td->hdev->dev, rdata); 650 return NULL; 651 } 652 653 for (r = 0; r < report->maxfield; r++) { 654 field = report->field[r]; 655 656 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 657 continue; 658 659 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 660 for (n = 0; n < field->report_count; n++) { 661 unsigned int hid = field->usage[n].hid; 662 663 if (hid == HID_DG_CONTACTID || 664 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 665 hid == HID_DG_TRANSDUCER_INDEX)) { 666 rdata->is_mt_collection = true; 667 break; 668 } 669 } 670 } 671 } 672 673 list_add_tail(&rdata->list, &td->reports); 674 675 return rdata; 676 } 677 678 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 679 struct hid_report *report) 680 { 681 struct mt_report_data *tmp, *rdata = NULL; 682 683 list_for_each_entry(tmp, &td->reports, list) { 684 if (report == tmp->report) { 685 rdata = tmp; 686 break; 687 } 688 } 689 690 if (!rdata) 691 rdata = mt_allocate_report_data(td, report); 692 693 return rdata; 694 } 695 696 static void mt_store_field(struct hid_device *hdev, 697 struct mt_application *application, 698 __s32 *value, 699 size_t offset) 700 { 701 struct mt_usages *usage; 702 __s32 **target; 703 704 if (list_empty(&application->mt_usages)) 705 usage = mt_allocate_usage(hdev, application); 706 else 707 usage = list_last_entry(&application->mt_usages, 708 struct mt_usages, 709 list); 710 711 if (!usage) 712 return; 713 714 target = (__s32 **)((char *)usage + offset); 715 716 /* the value has already been filled, create a new slot */ 717 if (*target != DEFAULT_TRUE && 718 *target != DEFAULT_FALSE && 719 *target != DEFAULT_ZERO) { 720 if (usage->contactid == DEFAULT_ZERO || 721 usage->x == DEFAULT_ZERO || 722 usage->y == DEFAULT_ZERO) { 723 hid_dbg(hdev, 724 "ignoring duplicate usage on incomplete"); 725 return; 726 } 727 usage = mt_allocate_usage(hdev, application); 728 if (!usage) 729 return; 730 731 target = (__s32 **)((char *)usage + offset); 732 } 733 734 *target = value; 735 } 736 737 #define MT_STORE_FIELD(__name) \ 738 mt_store_field(hdev, app, \ 739 &field->value[usage->usage_index], \ 740 offsetof(struct mt_usages, __name)) 741 742 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 743 struct hid_field *field, struct hid_usage *usage, 744 unsigned long **bit, int *max, struct mt_application *app) 745 { 746 struct mt_device *td = hid_get_drvdata(hdev); 747 struct mt_class *cls = &td->mtclass; 748 int code; 749 struct hid_usage *prev_usage = NULL; 750 751 /* 752 * Model touchscreens providing buttons as touchpads. 753 */ 754 if (field->application == HID_DG_TOUCHSCREEN && 755 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 756 app->mt_flags |= INPUT_MT_POINTER; 757 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 758 } 759 760 /* count the buttons on touchpads */ 761 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 762 app->buttons_count++; 763 764 if (usage->usage_index) 765 prev_usage = &field->usage[usage->usage_index - 1]; 766 767 switch (usage->hid & HID_USAGE_PAGE) { 768 769 case HID_UP_GENDESK: 770 switch (usage->hid) { 771 case HID_GD_X: 772 if (prev_usage && (prev_usage->hid == usage->hid)) { 773 code = ABS_MT_TOOL_X; 774 MT_STORE_FIELD(cx); 775 } else { 776 code = ABS_MT_POSITION_X; 777 MT_STORE_FIELD(x); 778 } 779 780 set_abs(hi->input, code, field, cls->sn_move); 781 782 /* 783 * A system multi-axis that exports X and Y has a high 784 * chance of being used directly on a surface 785 */ 786 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 787 __set_bit(INPUT_PROP_DIRECT, 788 hi->input->propbit); 789 input_set_abs_params(hi->input, 790 ABS_MT_TOOL_TYPE, 791 MT_TOOL_DIAL, 792 MT_TOOL_DIAL, 0, 0); 793 } 794 795 return 1; 796 case HID_GD_Y: 797 if (prev_usage && (prev_usage->hid == usage->hid)) { 798 code = ABS_MT_TOOL_Y; 799 MT_STORE_FIELD(cy); 800 } else { 801 code = ABS_MT_POSITION_Y; 802 MT_STORE_FIELD(y); 803 } 804 805 set_abs(hi->input, code, field, cls->sn_move); 806 807 return 1; 808 } 809 return 0; 810 811 case HID_UP_DIGITIZER: 812 switch (usage->hid) { 813 case HID_DG_INRANGE: 814 if (app->quirks & MT_QUIRK_HOVERING) { 815 input_set_abs_params(hi->input, 816 ABS_MT_DISTANCE, 0, 1, 0, 0); 817 } 818 MT_STORE_FIELD(inrange_state); 819 return 1; 820 case HID_DG_CONFIDENCE: 821 if ((cls->name == MT_CLS_WIN_8 || 822 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 823 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 824 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 825 (field->application == HID_DG_TOUCHPAD || 826 field->application == HID_DG_TOUCHSCREEN)) 827 app->quirks |= MT_QUIRK_CONFIDENCE; 828 829 if (app->quirks & MT_QUIRK_CONFIDENCE) 830 input_set_abs_params(hi->input, 831 ABS_MT_TOOL_TYPE, 832 MT_TOOL_FINGER, 833 MT_TOOL_PALM, 0, 0); 834 835 MT_STORE_FIELD(confidence_state); 836 return 1; 837 case HID_DG_TOUCH: 838 /* 839 * Legacy devices use TIPSWITCH and not TOUCH. 840 * One special case here is of the Apple Touch Bars. 841 * In these devices, the tip state is contained in 842 * fields with the HID_DG_TOUCH usage. 843 * Let's just ignore this field for other devices. 844 */ 845 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 846 return -1; 847 fallthrough; 848 case HID_DG_TIPSWITCH: 849 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 850 input_set_capability(hi->input, 851 EV_KEY, BTN_TOUCH); 852 MT_STORE_FIELD(tip_state); 853 return 1; 854 case HID_DG_TRANSDUCER_INDEX: 855 /* 856 * Contact ID in case of Apple Touch Bars is contained 857 * in fields with HID_DG_TRANSDUCER_INDEX usage. 858 */ 859 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 860 return 0; 861 fallthrough; 862 case HID_DG_CONTACTID: 863 MT_STORE_FIELD(contactid); 864 app->touches_by_report++; 865 return 1; 866 case HID_DG_WIDTH: 867 if (!(app->quirks & MT_QUIRK_NO_AREA)) 868 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 869 cls->sn_width); 870 MT_STORE_FIELD(w); 871 return 1; 872 case HID_DG_HEIGHT: 873 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 874 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 875 cls->sn_height); 876 877 /* 878 * Only set ABS_MT_ORIENTATION if it is not 879 * already set by the HID_DG_AZIMUTH usage. 880 */ 881 if (!test_bit(ABS_MT_ORIENTATION, 882 hi->input->absbit)) 883 input_set_abs_params(hi->input, 884 ABS_MT_ORIENTATION, 0, 1, 0, 0); 885 } 886 MT_STORE_FIELD(h); 887 return 1; 888 case HID_DG_TIPPRESSURE: 889 set_abs(hi->input, ABS_MT_PRESSURE, field, 890 cls->sn_pressure); 891 MT_STORE_FIELD(p); 892 return 1; 893 case HID_DG_SCANTIME: 894 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 895 app->scantime = &field->value[usage->usage_index]; 896 app->scantime_logical_max = field->logical_maximum; 897 return 1; 898 case HID_DG_CONTACTCOUNT: 899 app->have_contact_count = true; 900 app->raw_cc = &field->value[usage->usage_index]; 901 return 1; 902 case HID_DG_AZIMUTH: 903 /* 904 * Azimuth has the range of [0, MAX) representing a full 905 * revolution. Set ABS_MT_ORIENTATION to a quarter of 906 * MAX according the definition of ABS_MT_ORIENTATION 907 */ 908 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 909 -field->logical_maximum / 4, 910 field->logical_maximum / 4, 911 cls->sn_move ? 912 field->logical_maximum / cls->sn_move : 0, 0); 913 MT_STORE_FIELD(a); 914 return 1; 915 case HID_DG_CONTACTMAX: 916 /* contact max are global to the report */ 917 return -1; 918 } 919 /* let hid-input decide for the others */ 920 return 0; 921 922 case HID_UP_BUTTON: 923 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 924 /* 925 * MS PTP spec says that external buttons left and right have 926 * usages 2 and 3. 927 */ 928 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 929 field->application == HID_DG_TOUCHPAD && 930 (usage->hid & HID_USAGE) > 1) 931 code--; 932 933 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 934 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 935 936 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 937 if (!*bit) 938 return -1; 939 input_set_capability(hi->input, EV_KEY, code); 940 return 1; 941 942 case 0xff000000: 943 /* we do not want to map these: no input-oriented meaning */ 944 return -1; 945 } 946 947 return 0; 948 } 949 950 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 951 struct mt_usages *slot, 952 struct input_dev *input) 953 { 954 __s32 quirks = app->quirks; 955 956 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 957 return *slot->contactid; 958 959 if (quirks & MT_QUIRK_CYPRESS) 960 return cypress_compute_slot(app, slot); 961 962 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 963 return app->num_received; 964 965 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 966 return *slot->contactid - 1; 967 968 return input_mt_get_slot_by_key(input, *slot->contactid); 969 } 970 971 static void mt_release_pending_palms(struct mt_device *td, 972 struct mt_application *app, 973 struct input_dev *input) 974 { 975 int slotnum; 976 bool need_sync = false; 977 978 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 979 clear_bit(slotnum, app->pending_palm_slots); 980 981 input_mt_slot(input, slotnum); 982 input_mt_report_slot_inactive(input); 983 984 need_sync = true; 985 } 986 987 if (need_sync) { 988 input_mt_sync_frame(input); 989 input_sync(input); 990 } 991 } 992 993 /* 994 * this function is called when a whole packet has been received and processed, 995 * so that it can decide what to send to the input layer. 996 */ 997 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 998 struct input_dev *input) 999 { 1000 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1001 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1002 1003 input_mt_sync_frame(input); 1004 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1005 input_sync(input); 1006 1007 mt_release_pending_palms(td, app, input); 1008 1009 app->num_received = 0; 1010 app->left_button_state = 0; 1011 1012 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 1013 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 1014 else 1015 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 1016 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1017 } 1018 1019 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1020 { 1021 long delta = value - app->prev_scantime; 1022 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1023 1024 app->jiffies = jiffies; 1025 1026 if (delta < 0) 1027 delta += app->scantime_logical_max; 1028 1029 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1030 delta *= 100; 1031 1032 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1033 /* No data received for a while, resync the timestamp. */ 1034 return 0; 1035 else 1036 return app->timestamp + delta; 1037 } 1038 1039 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1040 struct hid_usage *usage, __s32 value) 1041 { 1042 /* we will handle the hidinput part later, now remains hiddev */ 1043 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1044 hid->hiddev_hid_event(hid, field, usage, value); 1045 1046 return 1; 1047 } 1048 1049 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1050 struct mt_application *app, 1051 struct mt_usages *slot) 1052 { 1053 struct input_mt *mt = input->mt; 1054 struct hid_device *hdev = td->hdev; 1055 __s32 quirks = app->quirks; 1056 bool valid = true; 1057 bool confidence_state = true; 1058 bool inrange_state = false; 1059 int active; 1060 int slotnum; 1061 int tool = MT_TOOL_FINGER; 1062 1063 if (!slot) 1064 return -EINVAL; 1065 1066 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1067 app->num_received >= app->num_expected) 1068 return -EAGAIN; 1069 1070 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1071 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1072 valid = *slot->inrange_state; 1073 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1074 valid = *slot->tip_state; 1075 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1076 valid = *slot->confidence_state; 1077 1078 if (!valid) 1079 return 0; 1080 } 1081 1082 slotnum = mt_compute_slot(td, app, slot, input); 1083 if (slotnum < 0 || slotnum >= td->maxcontacts) 1084 return 0; 1085 1086 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1087 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1088 1089 if (input_mt_is_active(i_slot) && 1090 input_mt_is_used(mt, i_slot)) 1091 return -EAGAIN; 1092 } 1093 1094 if (quirks & MT_QUIRK_CONFIDENCE) 1095 confidence_state = *slot->confidence_state; 1096 1097 if (quirks & MT_QUIRK_HOVERING) 1098 inrange_state = *slot->inrange_state; 1099 1100 active = *slot->tip_state || inrange_state; 1101 1102 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1103 tool = MT_TOOL_DIAL; 1104 else if (unlikely(!confidence_state)) { 1105 tool = MT_TOOL_PALM; 1106 if (!active && mt && 1107 input_mt_is_active(&mt->slots[slotnum])) { 1108 /* 1109 * The non-confidence was reported for 1110 * previously valid contact that is also no 1111 * longer valid. We can't simply report 1112 * lift-off as userspace will not be aware 1113 * of non-confidence, so we need to split 1114 * it into 2 events: active MT_TOOL_PALM 1115 * and a separate liftoff. 1116 */ 1117 active = true; 1118 set_bit(slotnum, app->pending_palm_slots); 1119 } 1120 } 1121 1122 input_mt_slot(input, slotnum); 1123 input_mt_report_slot_state(input, tool, active); 1124 if (active) { 1125 /* this finger is in proximity of the sensor */ 1126 int wide = (*slot->w > *slot->h); 1127 int major = max(*slot->w, *slot->h); 1128 int minor = min(*slot->w, *slot->h); 1129 int orientation = wide; 1130 int max_azimuth; 1131 int azimuth; 1132 int x; 1133 int y; 1134 int cx; 1135 int cy; 1136 1137 if (slot->a != DEFAULT_ZERO) { 1138 /* 1139 * Azimuth is counter-clockwise and ranges from [0, MAX) 1140 * (a full revolution). Convert it to clockwise ranging 1141 * [-MAX/2, MAX/2]. 1142 * 1143 * Note that ABS_MT_ORIENTATION require us to report 1144 * the limit of [-MAX/4, MAX/4], but the value can go 1145 * out of range to [-MAX/2, MAX/2] to report an upside 1146 * down ellipsis. 1147 */ 1148 azimuth = *slot->a; 1149 max_azimuth = input_abs_get_max(input, 1150 ABS_MT_ORIENTATION); 1151 if (azimuth > max_azimuth * 2) 1152 azimuth -= max_azimuth * 4; 1153 orientation = -azimuth; 1154 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1155 orientation = -orientation; 1156 1157 } 1158 1159 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1160 /* 1161 * divided by two to match visual scale of touch 1162 * for devices with this quirk 1163 */ 1164 major = major >> 1; 1165 minor = minor >> 1; 1166 } 1167 1168 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1169 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1170 *slot->x; 1171 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1172 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1173 *slot->y; 1174 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1175 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1176 *slot->cx; 1177 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1178 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1179 *slot->cy; 1180 1181 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1182 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1183 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1184 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1185 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1186 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1187 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1188 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1189 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1190 1191 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1192 } 1193 1194 return 0; 1195 } 1196 1197 static void mt_process_mt_event(struct hid_device *hid, 1198 struct mt_application *app, 1199 struct hid_field *field, 1200 struct hid_usage *usage, 1201 __s32 value, 1202 bool first_packet) 1203 { 1204 __s32 quirks = app->quirks; 1205 struct input_dev *input = field->hidinput->input; 1206 1207 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1208 return; 1209 1210 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1211 1212 /* 1213 * For Win8 PTP touchpads we should only look at 1214 * non finger/touch events in the first_packet of a 1215 * (possible) multi-packet frame. 1216 */ 1217 if (!first_packet) 1218 return; 1219 1220 /* 1221 * For Win8 PTP touchpads we map both the clickpad click 1222 * and any "external" left buttons to BTN_LEFT if a 1223 * device claims to have both we need to report 1 for 1224 * BTN_LEFT if either is pressed, so we or all values 1225 * together and report the result in mt_sync_frame(). 1226 */ 1227 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1228 app->left_button_state |= value; 1229 return; 1230 } 1231 } 1232 1233 input_event(input, usage->type, usage->code, value); 1234 } 1235 1236 static void mt_touch_report(struct hid_device *hid, 1237 struct mt_report_data *rdata) 1238 { 1239 struct mt_device *td = hid_get_drvdata(hid); 1240 struct hid_report *report = rdata->report; 1241 struct mt_application *app = rdata->application; 1242 struct hid_field *field; 1243 struct input_dev *input; 1244 struct mt_usages *slot; 1245 bool first_packet; 1246 unsigned count; 1247 int r, n; 1248 int scantime = 0; 1249 int contact_count = -1; 1250 1251 /* sticky fingers release in progress, abort */ 1252 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1253 return; 1254 1255 scantime = *app->scantime; 1256 app->timestamp = mt_compute_timestamp(app, scantime); 1257 if (app->raw_cc != DEFAULT_ZERO) 1258 contact_count = *app->raw_cc; 1259 1260 /* 1261 * Includes multi-packet support where subsequent 1262 * packets are sent with zero contactcount. 1263 */ 1264 if (contact_count >= 0) { 1265 /* 1266 * For Win8 PTPs the first packet (td->num_received == 0) may 1267 * have a contactcount of 0 if there only is a button event. 1268 * We double check that this is not a continuation packet 1269 * of a possible multi-packet frame be checking that the 1270 * timestamp has changed. 1271 */ 1272 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1273 app->num_received == 0 && 1274 app->prev_scantime != scantime) 1275 app->num_expected = contact_count; 1276 /* A non 0 contact count always indicates a first packet */ 1277 else if (contact_count) 1278 app->num_expected = contact_count; 1279 } 1280 app->prev_scantime = scantime; 1281 1282 first_packet = app->num_received == 0; 1283 1284 input = report->field[0]->hidinput->input; 1285 1286 list_for_each_entry(slot, &app->mt_usages, list) { 1287 if (!mt_process_slot(td, input, app, slot)) 1288 app->num_received++; 1289 } 1290 1291 for (r = 0; r < report->maxfield; r++) { 1292 field = report->field[r]; 1293 count = field->report_count; 1294 1295 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1296 continue; 1297 1298 for (n = 0; n < count; n++) 1299 mt_process_mt_event(hid, app, field, 1300 &field->usage[n], field->value[n], 1301 first_packet); 1302 } 1303 1304 if (app->num_received >= app->num_expected) 1305 mt_sync_frame(td, app, input); 1306 1307 /* 1308 * Windows 8 specs says 2 things: 1309 * - once a contact has been reported, it has to be reported in each 1310 * subsequent report 1311 * - the report rate when fingers are present has to be at least 1312 * the refresh rate of the screen, 60 or 120 Hz 1313 * 1314 * I interprete this that the specification forces a report rate of 1315 * at least 60 Hz for a touchscreen to be certified. 1316 * Which means that if we do not get a report whithin 16 ms, either 1317 * something wrong happens, either the touchscreen forgets to send 1318 * a release. Taking a reasonable margin allows to remove issues 1319 * with USB communication or the load of the machine. 1320 * 1321 * Given that Win 8 devices are forced to send a release, this will 1322 * only affect laggish machines and the ones that have a firmware 1323 * defect. 1324 */ 1325 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1326 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1327 mod_timer(&td->release_timer, 1328 jiffies + msecs_to_jiffies(100)); 1329 else 1330 timer_delete(&td->release_timer); 1331 } 1332 1333 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1334 } 1335 1336 static int mt_touch_input_configured(struct hid_device *hdev, 1337 struct hid_input *hi, 1338 struct mt_application *app) 1339 { 1340 struct mt_device *td = hid_get_drvdata(hdev); 1341 struct mt_class *cls = &td->mtclass; 1342 struct input_dev *input = hi->input; 1343 int ret; 1344 1345 /* 1346 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1347 * but the maximum contact count is greater than the default. 1348 */ 1349 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1350 td->maxcontacts = cls->maxcontacts; 1351 1352 if (!td->maxcontacts) 1353 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1354 1355 mt_post_parse(td, app); 1356 if (td->serial_maybe) 1357 mt_post_parse_default_settings(td, app); 1358 1359 /* 1360 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1361 * but these devices are direct. 1362 */ 1363 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1364 app->mt_flags |= INPUT_MT_DIRECT; 1365 1366 if (cls->is_indirect) 1367 app->mt_flags |= INPUT_MT_POINTER; 1368 1369 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1370 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1371 1372 /* check for clickpads */ 1373 if ((app->mt_flags & INPUT_MT_POINTER) && 1374 (app->buttons_count == 1)) 1375 td->is_buttonpad = true; 1376 1377 if (td->is_buttonpad) 1378 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1379 1380 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1381 BITS_TO_LONGS(td->maxcontacts), 1382 sizeof(long), 1383 GFP_KERNEL); 1384 if (!app->pending_palm_slots) 1385 return -ENOMEM; 1386 1387 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1388 if (ret) 1389 return ret; 1390 1391 app->mt_flags = 0; 1392 return 0; 1393 } 1394 1395 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1396 max, EV_KEY, (c)) 1397 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1398 struct hid_field *field, struct hid_usage *usage, 1399 unsigned long **bit, int *max) 1400 { 1401 struct mt_device *td = hid_get_drvdata(hdev); 1402 struct mt_application *application; 1403 struct mt_report_data *rdata; 1404 1405 rdata = mt_find_report_data(td, field->report); 1406 if (!rdata) { 1407 hid_err(hdev, "failed to allocate data for report\n"); 1408 return 0; 1409 } 1410 1411 application = rdata->application; 1412 1413 /* 1414 * If mtclass.export_all_inputs is not set, only map fields from 1415 * TouchScreen or TouchPad collections. We need to ignore fields 1416 * that belong to other collections such as Mouse that might have 1417 * the same GenericDesktop usages. 1418 */ 1419 if (!td->mtclass.export_all_inputs && 1420 field->application != HID_DG_TOUCHSCREEN && 1421 field->application != HID_DG_PEN && 1422 field->application != HID_DG_TOUCHPAD && 1423 field->application != HID_GD_KEYBOARD && 1424 field->application != HID_GD_SYSTEM_CONTROL && 1425 field->application != HID_CP_CONSUMER_CONTROL && 1426 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1427 field->application != HID_GD_SYSTEM_MULTIAXIS && 1428 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1429 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1430 return -1; 1431 1432 /* 1433 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1434 * touchpad report descriptor. We need to treat these as an array to 1435 * map usages to input keys. 1436 */ 1437 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1438 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1439 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1440 set_bit(EV_REP, hi->input->evbit); 1441 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1442 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1443 switch (usage->hid & HID_USAGE) { 1444 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1445 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1446 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1447 case 0x6b: mt_map_key_clear(KEY_F21); break; 1448 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1449 default: 1450 return -1; 1451 } 1452 return 1; 1453 } 1454 1455 if (rdata->is_mt_collection) 1456 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1457 application); 1458 1459 /* 1460 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1461 * for the stylus. Overwrite the hid_input application 1462 */ 1463 if (field->physical == HID_DG_STYLUS) 1464 hi->application = HID_DG_STYLUS; 1465 1466 /* let hid-core decide for the others */ 1467 return 0; 1468 } 1469 1470 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1471 struct hid_field *field, struct hid_usage *usage, 1472 unsigned long **bit, int *max) 1473 { 1474 struct mt_device *td = hid_get_drvdata(hdev); 1475 struct mt_report_data *rdata; 1476 1477 rdata = mt_find_report_data(td, field->report); 1478 if (rdata && rdata->is_mt_collection) { 1479 /* We own these mappings, tell hid-input to ignore them */ 1480 return -1; 1481 } 1482 1483 /* let hid-core decide for the others */ 1484 return 0; 1485 } 1486 1487 static int mt_event(struct hid_device *hid, struct hid_field *field, 1488 struct hid_usage *usage, __s32 value) 1489 { 1490 struct mt_device *td = hid_get_drvdata(hid); 1491 struct mt_report_data *rdata; 1492 1493 rdata = mt_find_report_data(td, field->report); 1494 if (rdata && rdata->is_mt_collection) 1495 return mt_touch_event(hid, field, usage, value); 1496 1497 return 0; 1498 } 1499 1500 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1501 unsigned int *size) 1502 { 1503 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1504 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1505 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1506 if (rdesc[607] == 0x15) { 1507 rdesc[607] = 0x25; 1508 dev_info( 1509 &hdev->dev, 1510 "GT7868Q report descriptor fixup is applied.\n"); 1511 } else { 1512 dev_info( 1513 &hdev->dev, 1514 "The byte is not expected for fixing the report descriptor. \ 1515 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1516 got: %x\n", 1517 rdesc[607]); 1518 } 1519 } 1520 1521 return rdesc; 1522 } 1523 1524 static void mt_report(struct hid_device *hid, struct hid_report *report) 1525 { 1526 struct mt_device *td = hid_get_drvdata(hid); 1527 struct hid_field *field = report->field[0]; 1528 struct mt_report_data *rdata; 1529 1530 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1531 return; 1532 1533 rdata = mt_find_report_data(td, report); 1534 if (rdata && rdata->is_mt_collection) 1535 return mt_touch_report(hid, rdata); 1536 1537 if (field && field->hidinput && field->hidinput->input) 1538 input_sync(field->hidinput->input); 1539 } 1540 1541 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1542 struct hid_field *field, 1543 struct hid_usage *usage, 1544 enum latency_mode latency, 1545 enum report_mode report_mode, 1546 bool *inputmode_found) 1547 { 1548 struct mt_device *td = hid_get_drvdata(hdev); 1549 struct mt_class *cls = &td->mtclass; 1550 struct hid_report *report = field->report; 1551 unsigned int index = usage->usage_index; 1552 char *buf; 1553 u32 report_len; 1554 int max; 1555 1556 switch (usage->hid) { 1557 case HID_DG_INPUTMODE: 1558 /* 1559 * Some elan panels wrongly declare 2 input mode features, 1560 * and silently ignore when we set the value in the second 1561 * field. Skip the second feature and hope for the best. 1562 */ 1563 if (*inputmode_found) 1564 return false; 1565 1566 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1567 report_len = hid_report_len(report); 1568 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1569 if (!buf) { 1570 hid_err(hdev, 1571 "failed to allocate buffer for report\n"); 1572 return false; 1573 } 1574 hid_hw_raw_request(hdev, report->id, buf, report_len, 1575 HID_FEATURE_REPORT, 1576 HID_REQ_GET_REPORT); 1577 kfree(buf); 1578 } 1579 1580 field->value[index] = td->inputmode_value; 1581 *inputmode_found = true; 1582 return true; 1583 1584 case HID_DG_CONTACTMAX: 1585 if (cls->maxcontacts) { 1586 max = min_t(int, field->logical_maximum, 1587 cls->maxcontacts); 1588 if (field->value[index] != max) { 1589 field->value[index] = max; 1590 return true; 1591 } 1592 } 1593 break; 1594 1595 case HID_DG_LATENCYMODE: 1596 field->value[index] = latency; 1597 return true; 1598 1599 case HID_DG_SURFACESWITCH: 1600 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1601 return true; 1602 1603 case HID_DG_BUTTONSWITCH: 1604 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1605 return true; 1606 } 1607 1608 return false; /* no need to update the report */ 1609 } 1610 1611 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1612 enum report_mode report_mode) 1613 { 1614 struct hid_report_enum *rep_enum; 1615 struct hid_report *rep; 1616 struct hid_usage *usage; 1617 int i, j; 1618 bool update_report; 1619 bool inputmode_found = false; 1620 1621 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1622 list_for_each_entry(rep, &rep_enum->report_list, list) { 1623 update_report = false; 1624 1625 for (i = 0; i < rep->maxfield; i++) { 1626 /* Ignore if report count is out of bounds. */ 1627 if (rep->field[i]->report_count < 1) 1628 continue; 1629 1630 for (j = 0; j < rep->field[i]->maxusage; j++) { 1631 usage = &rep->field[i]->usage[j]; 1632 1633 if (mt_need_to_apply_feature(hdev, 1634 rep->field[i], 1635 usage, 1636 latency, 1637 report_mode, 1638 &inputmode_found)) 1639 update_report = true; 1640 } 1641 } 1642 1643 if (update_report) 1644 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1645 } 1646 } 1647 1648 static void mt_post_parse_default_settings(struct mt_device *td, 1649 struct mt_application *app) 1650 { 1651 __s32 quirks = app->quirks; 1652 1653 /* unknown serial device needs special quirks */ 1654 if (list_is_singular(&app->mt_usages)) { 1655 quirks |= MT_QUIRK_ALWAYS_VALID; 1656 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1657 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1658 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1659 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1660 } 1661 1662 app->quirks = quirks; 1663 } 1664 1665 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1666 { 1667 if (!app->have_contact_count) 1668 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1669 } 1670 1671 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1672 { 1673 struct mt_device *td = hid_get_drvdata(hdev); 1674 const char *suffix = NULL; 1675 struct mt_report_data *rdata; 1676 struct mt_application *mt_application = NULL; 1677 struct hid_report *report; 1678 int ret; 1679 1680 list_for_each_entry(report, &hi->reports, hidinput_list) { 1681 rdata = mt_find_report_data(td, report); 1682 if (!rdata) { 1683 hid_err(hdev, "failed to allocate data for report\n"); 1684 return -ENOMEM; 1685 } 1686 1687 mt_application = rdata->application; 1688 1689 if (rdata->is_mt_collection) { 1690 ret = mt_touch_input_configured(hdev, hi, 1691 mt_application); 1692 if (ret) 1693 return ret; 1694 } 1695 } 1696 1697 switch (hi->application) { 1698 case HID_GD_KEYBOARD: 1699 case HID_GD_KEYPAD: 1700 case HID_GD_MOUSE: 1701 case HID_DG_TOUCHPAD: 1702 case HID_GD_SYSTEM_CONTROL: 1703 case HID_CP_CONSUMER_CONTROL: 1704 case HID_GD_WIRELESS_RADIO_CTLS: 1705 case HID_GD_SYSTEM_MULTIAXIS: 1706 /* already handled by hid core */ 1707 break; 1708 case HID_DG_TOUCHSCREEN: 1709 /* we do not set suffix = "Touchscreen" */ 1710 hi->input->name = hdev->name; 1711 break; 1712 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1713 suffix = "Custom Media Keys"; 1714 break; 1715 case HID_DG_STYLUS: 1716 /* force BTN_STYLUS to allow tablet matching in udev */ 1717 __set_bit(BTN_STYLUS, hi->input->keybit); 1718 break; 1719 default: 1720 suffix = "UNKNOWN"; 1721 break; 1722 } 1723 1724 if (suffix) { 1725 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1726 "%s %s", hdev->name, suffix); 1727 if (!hi->input->name) 1728 return -ENOMEM; 1729 } 1730 1731 return 0; 1732 } 1733 1734 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1735 { 1736 if (field->usage[0].hid != usage || 1737 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1738 return; 1739 1740 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1741 field->flags |= HID_MAIN_ITEM_VARIABLE; 1742 } 1743 1744 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1745 { 1746 struct hid_report *report; 1747 int i; 1748 1749 list_for_each_entry(report, 1750 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1751 list) { 1752 1753 if (!report->maxfield) 1754 continue; 1755 1756 for (i = 0; i < report->maxfield; i++) 1757 if (report->field[i]->maxusage >= 1) 1758 mt_fix_const_field(report->field[i], usage); 1759 } 1760 } 1761 1762 static void mt_release_contacts(struct hid_device *hid) 1763 { 1764 struct hid_input *hidinput; 1765 struct mt_application *application; 1766 struct mt_device *td = hid_get_drvdata(hid); 1767 1768 list_for_each_entry(hidinput, &hid->inputs, list) { 1769 struct input_dev *input_dev = hidinput->input; 1770 struct input_mt *mt = input_dev->mt; 1771 int i; 1772 1773 if (mt) { 1774 for (i = 0; i < mt->num_slots; i++) { 1775 input_mt_slot(input_dev, i); 1776 input_mt_report_slot_inactive(input_dev); 1777 } 1778 input_mt_sync_frame(input_dev); 1779 input_sync(input_dev); 1780 } 1781 } 1782 1783 list_for_each_entry(application, &td->applications, list) { 1784 application->num_received = 0; 1785 } 1786 } 1787 1788 static void mt_expired_timeout(struct timer_list *t) 1789 { 1790 struct mt_device *td = timer_container_of(td, t, release_timer); 1791 struct hid_device *hdev = td->hdev; 1792 1793 /* 1794 * An input report came in just before we release the sticky fingers, 1795 * it will take care of the sticky fingers. 1796 */ 1797 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1798 return; 1799 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1800 mt_release_contacts(hdev); 1801 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1802 } 1803 1804 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1805 { 1806 int ret, i; 1807 struct mt_device *td; 1808 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1809 1810 for (i = 0; mt_classes[i].name ; i++) { 1811 if (id->driver_data == mt_classes[i].name) { 1812 mtclass = &(mt_classes[i]); 1813 break; 1814 } 1815 } 1816 1817 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1818 if (!td) { 1819 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1820 return -ENOMEM; 1821 } 1822 td->hdev = hdev; 1823 td->mtclass = *mtclass; 1824 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1825 hid_set_drvdata(hdev, td); 1826 1827 INIT_LIST_HEAD(&td->applications); 1828 INIT_LIST_HEAD(&td->reports); 1829 1830 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1831 td->serial_maybe = true; 1832 1833 1834 /* Orientation is inverted if the X or Y axes are 1835 * flipped, but normalized if both are inverted. 1836 */ 1837 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1838 !((hdev->quirks & HID_QUIRK_X_INVERT) 1839 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1840 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1841 1842 /* This allows the driver to correctly support devices 1843 * that emit events over several HID messages. 1844 */ 1845 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1846 1847 /* 1848 * This allows the driver to handle different input sensors 1849 * that emits events through different applications on the same HID 1850 * device. 1851 */ 1852 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1853 1854 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1855 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1856 1857 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1858 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1859 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1860 } 1861 1862 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1863 1864 ret = hid_parse(hdev); 1865 if (ret != 0) 1866 return ret; 1867 1868 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 1869 !hid_find_field(hdev, HID_INPUT_REPORT, 1870 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 1871 return -ENODEV; 1872 1873 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1874 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1875 1876 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 1877 hdev->quirks |= HID_QUIRK_NOGET; 1878 1879 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1880 if (ret) 1881 return ret; 1882 1883 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1884 if (ret) 1885 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1886 hdev->name); 1887 1888 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1889 1890 return 0; 1891 } 1892 1893 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1894 { 1895 struct mt_device *td = hid_get_drvdata(hdev); 1896 1897 /* High latency is desirable for power savings during S3/S0ix */ 1898 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1899 !hid_hw_may_wakeup(hdev)) 1900 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 1901 else 1902 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 1903 1904 return 0; 1905 } 1906 1907 static int mt_reset_resume(struct hid_device *hdev) 1908 { 1909 mt_release_contacts(hdev); 1910 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1911 return 0; 1912 } 1913 1914 static int mt_resume(struct hid_device *hdev) 1915 { 1916 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1917 * It should be safe to send it to other devices too. 1918 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1919 1920 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1921 1922 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1923 1924 return 0; 1925 } 1926 1927 static void mt_remove(struct hid_device *hdev) 1928 { 1929 struct mt_device *td = hid_get_drvdata(hdev); 1930 1931 timer_delete_sync(&td->release_timer); 1932 1933 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1934 hid_hw_stop(hdev); 1935 } 1936 1937 static void mt_on_hid_hw_open(struct hid_device *hdev) 1938 { 1939 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1940 } 1941 1942 static void mt_on_hid_hw_close(struct hid_device *hdev) 1943 { 1944 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 1945 } 1946 1947 /* 1948 * This list contains only: 1949 * - VID/PID of products not working with the default multitouch handling 1950 * - 2 generic rules. 1951 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1952 */ 1953 static const struct hid_device_id mt_devices[] = { 1954 1955 /* 3M panels */ 1956 { .driver_data = MT_CLS_3M, 1957 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1958 USB_DEVICE_ID_3M1968) }, 1959 { .driver_data = MT_CLS_3M, 1960 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1961 USB_DEVICE_ID_3M2256) }, 1962 { .driver_data = MT_CLS_3M, 1963 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1964 USB_DEVICE_ID_3M3266) }, 1965 1966 /* Anton devices */ 1967 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1968 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1969 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1970 1971 /* Asus T101HA */ 1972 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 1973 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1974 USB_VENDOR_ID_ASUSTEK, 1975 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 1976 1977 /* Asus T304UA */ 1978 { .driver_data = MT_CLS_ASUS, 1979 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1980 USB_VENDOR_ID_ASUSTEK, 1981 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1982 1983 /* Atmel panels */ 1984 { .driver_data = MT_CLS_SERIAL, 1985 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1986 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1987 1988 /* Baanto multitouch devices */ 1989 { .driver_data = MT_CLS_NSMU, 1990 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1991 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1992 1993 /* Cando panels */ 1994 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1995 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1996 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1997 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1998 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1999 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2000 2001 /* Chunghwa Telecom touch panels */ 2002 { .driver_data = MT_CLS_NSMU, 2003 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2004 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2005 2006 /* CJTouch panels */ 2007 { .driver_data = MT_CLS_NSMU, 2008 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2009 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2010 { .driver_data = MT_CLS_NSMU, 2011 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2012 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2013 2014 /* CVTouch panels */ 2015 { .driver_data = MT_CLS_NSMU, 2016 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2017 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2018 2019 /* eGalax devices (SAW) */ 2020 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2021 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2022 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2023 2024 /* eGalax devices (resistive) */ 2025 { .driver_data = MT_CLS_EGALAX, 2026 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2027 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2028 { .driver_data = MT_CLS_EGALAX, 2029 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2030 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2031 2032 /* eGalax devices (capacitive) */ 2033 { .driver_data = MT_CLS_EGALAX_SERIAL, 2034 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2035 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2036 { .driver_data = MT_CLS_EGALAX, 2037 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2038 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2039 { .driver_data = MT_CLS_EGALAX_SERIAL, 2040 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2041 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2042 { .driver_data = MT_CLS_EGALAX_SERIAL, 2043 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2044 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2045 { .driver_data = MT_CLS_EGALAX_SERIAL, 2046 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2047 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2048 { .driver_data = MT_CLS_EGALAX_SERIAL, 2049 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2050 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2051 { .driver_data = MT_CLS_EGALAX, 2052 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2053 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2054 { .driver_data = MT_CLS_EGALAX, 2055 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2056 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2057 { .driver_data = MT_CLS_EGALAX_SERIAL, 2058 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2059 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2060 { .driver_data = MT_CLS_EGALAX, 2061 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2062 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2063 { .driver_data = MT_CLS_EGALAX, 2064 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2065 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2066 { .driver_data = MT_CLS_EGALAX, 2067 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2068 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2069 { .driver_data = MT_CLS_EGALAX, 2070 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2071 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2072 { .driver_data = MT_CLS_EGALAX_SERIAL, 2073 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2074 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2075 { .driver_data = MT_CLS_EGALAX_SERIAL, 2076 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2077 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2078 { .driver_data = MT_CLS_EGALAX_SERIAL, 2079 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2080 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2081 { .driver_data = MT_CLS_EGALAX, 2082 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2083 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2084 2085 /* Elan devices */ 2086 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2087 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2088 USB_VENDOR_ID_ELAN, 0x313a) }, 2089 2090 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2091 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2092 USB_VENDOR_ID_ELAN, 0x3148) }, 2093 2094 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2095 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2096 USB_VENDOR_ID_ELAN, 0x32ae) }, 2097 2098 /* Elitegroup panel */ 2099 { .driver_data = MT_CLS_SERIAL, 2100 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2101 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2102 2103 /* Flatfrog Panels */ 2104 { .driver_data = MT_CLS_FLATFROG, 2105 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2106 USB_DEVICE_ID_MULTITOUCH_3200) }, 2107 2108 /* FocalTech Panels */ 2109 { .driver_data = MT_CLS_SERIAL, 2110 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2111 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2112 2113 /* GeneralTouch panel */ 2114 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2115 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2116 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2117 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2118 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2119 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2120 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2121 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2122 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2123 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2124 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2125 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2126 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2127 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2128 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2129 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2130 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2131 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2132 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2133 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2134 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2135 2136 /* Gametel game controller */ 2137 { .driver_data = MT_CLS_NSMU, 2138 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2139 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2140 2141 /* Goodix GT7868Q devices */ 2142 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2143 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2144 I2C_DEVICE_ID_GOODIX_01E8) }, 2145 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2146 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2147 I2C_DEVICE_ID_GOODIX_01E9) }, 2148 2149 /* GoodTouch panels */ 2150 { .driver_data = MT_CLS_NSMU, 2151 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2152 USB_DEVICE_ID_GOODTOUCH_000f) }, 2153 2154 /* Hanvon panels */ 2155 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2156 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2157 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2158 2159 /* HONOR GLO-GXXX panel */ 2160 { .driver_data = MT_CLS_VTL, 2161 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2162 0x347d, 0x7853) }, 2163 2164 /* HONOR MagicBook Art 14 touchpad */ 2165 { .driver_data = MT_CLS_VTL, 2166 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2167 0x35cc, 0x0104) }, 2168 2169 /* Ilitek dual touch panel */ 2170 { .driver_data = MT_CLS_NSMU, 2171 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2172 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2173 2174 /* LG Melfas panel */ 2175 { .driver_data = MT_CLS_LG, 2176 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2177 USB_DEVICE_ID_LG_MELFAS_MT) }, 2178 { .driver_data = MT_CLS_LG, 2179 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2180 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2181 2182 /* Lenovo X1 TAB Gen 1 */ 2183 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2184 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2185 USB_VENDOR_ID_LENOVO, 2186 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2187 2188 /* Lenovo X1 TAB Gen 2 */ 2189 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2190 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2191 USB_VENDOR_ID_LENOVO, 2192 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2193 2194 /* Lenovo X1 TAB Gen 3 */ 2195 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2196 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2197 USB_VENDOR_ID_LENOVO, 2198 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2199 2200 /* Lenovo X12 TAB Gen 1 */ 2201 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2202 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2203 USB_VENDOR_ID_LENOVO, 2204 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2205 2206 /* Lenovo X12 TAB Gen 2 */ 2207 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2208 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2209 USB_VENDOR_ID_LENOVO, 2210 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2211 2212 /* Logitech devices */ 2213 { .driver_data = MT_CLS_NSMU, 2214 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2215 USB_VENDOR_ID_LOGITECH, 2216 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2217 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2218 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2219 USB_VENDOR_ID_LOGITECH, 2220 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2221 2222 /* MosArt panels */ 2223 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2224 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2225 USB_DEVICE_ID_ASUS_T91MT)}, 2226 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2227 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2228 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2229 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2230 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2231 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2232 2233 /* Novatek Panel */ 2234 { .driver_data = MT_CLS_NSMU, 2235 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2236 USB_DEVICE_ID_NOVATEK_PCT) }, 2237 2238 /* Ntrig Panel */ 2239 { .driver_data = MT_CLS_NSMU, 2240 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2241 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2242 2243 /* Panasonic panels */ 2244 { .driver_data = MT_CLS_PANASONIC, 2245 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2246 USB_DEVICE_ID_PANABOARD_UBT780) }, 2247 { .driver_data = MT_CLS_PANASONIC, 2248 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2249 USB_DEVICE_ID_PANABOARD_UBT880) }, 2250 2251 /* PixArt optical touch screen */ 2252 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2253 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2254 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2255 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2256 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2257 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2258 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2259 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2260 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2261 2262 /* PixCir-based panels */ 2263 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2264 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2265 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2266 2267 /* Quanta-based panels */ 2268 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2269 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2270 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2271 2272 /* Razer touchpads */ 2273 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2274 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2275 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2276 2277 /* Smart Tech panels */ 2278 { .driver_data = MT_CLS_SMART_TECH, 2279 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2280 2281 /* Stantum panels */ 2282 { .driver_data = MT_CLS_CONFIDENCE, 2283 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2284 USB_DEVICE_ID_MTP_STM)}, 2285 2286 /* Synaptics devices */ 2287 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2288 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2289 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2290 2291 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2292 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2293 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2294 2295 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2296 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2297 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2298 2299 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2300 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2301 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2302 2303 /* TopSeed panels */ 2304 { .driver_data = MT_CLS_TOPSEED, 2305 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2306 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2307 2308 /* Touch International panels */ 2309 { .driver_data = MT_CLS_NSMU, 2310 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2311 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2312 2313 /* Unitec panels */ 2314 { .driver_data = MT_CLS_NSMU, 2315 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2316 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2317 { .driver_data = MT_CLS_NSMU, 2318 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2319 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2320 2321 /* VTL panels */ 2322 { .driver_data = MT_CLS_VTL, 2323 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2324 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2325 2326 /* Winbond Electronics Corp. */ 2327 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2328 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2329 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2330 2331 /* Wistron panels */ 2332 { .driver_data = MT_CLS_NSMU, 2333 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2334 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2335 2336 /* XAT */ 2337 { .driver_data = MT_CLS_NSMU, 2338 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2339 USB_DEVICE_ID_XAT_CSR) }, 2340 2341 /* Xiroku */ 2342 { .driver_data = MT_CLS_NSMU, 2343 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2344 USB_DEVICE_ID_XIROKU_SPX) }, 2345 { .driver_data = MT_CLS_NSMU, 2346 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2347 USB_DEVICE_ID_XIROKU_MPX) }, 2348 { .driver_data = MT_CLS_NSMU, 2349 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2350 USB_DEVICE_ID_XIROKU_CSR) }, 2351 { .driver_data = MT_CLS_NSMU, 2352 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2353 USB_DEVICE_ID_XIROKU_SPX1) }, 2354 { .driver_data = MT_CLS_NSMU, 2355 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2356 USB_DEVICE_ID_XIROKU_MPX1) }, 2357 { .driver_data = MT_CLS_NSMU, 2358 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2359 USB_DEVICE_ID_XIROKU_CSR1) }, 2360 { .driver_data = MT_CLS_NSMU, 2361 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2362 USB_DEVICE_ID_XIROKU_SPX2) }, 2363 { .driver_data = MT_CLS_NSMU, 2364 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2365 USB_DEVICE_ID_XIROKU_MPX2) }, 2366 { .driver_data = MT_CLS_NSMU, 2367 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2368 USB_DEVICE_ID_XIROKU_CSR2) }, 2369 2370 /* Apple Touch Bar */ 2371 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2372 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2373 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2374 2375 /* Google MT devices */ 2376 { .driver_data = MT_CLS_GOOGLE, 2377 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2378 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2379 { .driver_data = MT_CLS_GOOGLE, 2380 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2381 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2382 2383 /* sis */ 2384 { .driver_data = MT_CLS_SIS, 2385 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2386 HID_ANY_ID) }, 2387 2388 /* Hantick */ 2389 { .driver_data = MT_CLS_NSMU, 2390 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2391 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2392 2393 /* Generic MT device */ 2394 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2395 2396 /* Generic Win 8 certified MT device */ 2397 { .driver_data = MT_CLS_WIN_8, 2398 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2399 HID_ANY_ID, HID_ANY_ID) }, 2400 { } 2401 }; 2402 MODULE_DEVICE_TABLE(hid, mt_devices); 2403 2404 static const struct hid_usage_id mt_grabbed_usages[] = { 2405 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2406 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2407 }; 2408 2409 static struct hid_driver mt_driver = { 2410 .name = "hid-multitouch", 2411 .id_table = mt_devices, 2412 .probe = mt_probe, 2413 .remove = mt_remove, 2414 .input_mapping = mt_input_mapping, 2415 .input_mapped = mt_input_mapped, 2416 .input_configured = mt_input_configured, 2417 .feature_mapping = mt_feature_mapping, 2418 .usage_table = mt_grabbed_usages, 2419 .event = mt_event, 2420 .report_fixup = mt_report_fixup, 2421 .report = mt_report, 2422 .suspend = pm_ptr(mt_suspend), 2423 .reset_resume = pm_ptr(mt_reset_resume), 2424 .resume = pm_ptr(mt_resume), 2425 .on_hid_hw_open = mt_on_hid_hw_open, 2426 .on_hid_hw_close = mt_on_hid_hw_close, 2427 }; 2428 module_hid_driver(mt_driver); 2429