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 #include "hid-haptic.h" 53 54 /* quirks to control the device */ 55 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 56 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 57 #define MT_QUIRK_CYPRESS BIT(2) 58 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 59 #define MT_QUIRK_ALWAYS_VALID BIT(4) 60 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 61 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 62 #define MT_QUIRK_CONFIDENCE BIT(7) 63 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 64 #define MT_QUIRK_NO_AREA BIT(9) 65 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 66 #define MT_QUIRK_HOVERING BIT(11) 67 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 68 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 69 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 70 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 71 #define MT_QUIRK_STICKY_FINGERS BIT(16) 72 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 73 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 74 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 75 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 76 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 77 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 78 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 79 80 #define MT_INPUTMODE_TOUCHSCREEN 0x02 81 #define MT_INPUTMODE_TOUCHPAD 0x03 82 83 #define MT_BUTTONTYPE_CLICKPAD 0 84 85 enum latency_mode { 86 HID_LATENCY_NORMAL = 0, 87 HID_LATENCY_HIGH = 1, 88 }; 89 90 enum report_mode { 91 TOUCHPAD_REPORT_NONE = 0, 92 TOUCHPAD_REPORT_BUTTONS = BIT(0), 93 TOUCHPAD_REPORT_CONTACTS = BIT(1), 94 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 95 }; 96 97 #define MT_IO_FLAGS_RUNNING 0 98 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 99 #define MT_IO_FLAGS_PENDING_SLOTS 2 100 101 static const bool mtrue = true; /* default for true */ 102 static const bool mfalse; /* default for false */ 103 static const __s32 mzero; /* default for 0 */ 104 105 #define DEFAULT_TRUE ((void *)&mtrue) 106 #define DEFAULT_FALSE ((void *)&mfalse) 107 #define DEFAULT_ZERO ((void *)&mzero) 108 109 struct mt_usages { 110 struct list_head list; 111 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 112 __s32 *contactid; /* the device ContactID assigned to this slot */ 113 bool *tip_state; /* is the touch valid? */ 114 bool *inrange_state; /* is the finger in proximity of the sensor? */ 115 bool *confidence_state; /* is the touch made by a finger? */ 116 }; 117 118 struct mt_application { 119 struct list_head list; 120 unsigned int application; 121 unsigned int report_id; 122 struct list_head mt_usages; /* mt usages list */ 123 124 __s32 quirks; 125 126 __s32 *scantime; /* scantime reported */ 127 __s32 scantime_logical_max; /* max value for raw scantime */ 128 129 __s32 *raw_cc; /* contact count in the report */ 130 int left_button_state; /* left button state */ 131 unsigned int mt_flags; /* flags to pass to input-mt */ 132 133 unsigned long *pending_palm_slots; /* slots where we reported palm 134 * and need to release */ 135 136 __u8 num_received; /* how many contacts we received */ 137 __u8 num_expected; /* expected last contact index */ 138 __u8 buttons_count; /* number of physical buttons per touchpad */ 139 __u8 touches_by_report; /* how many touches are present in one report: 140 * 1 means we should use a serial protocol 141 * > 1 means hybrid (multitouch) protocol 142 */ 143 144 unsigned long jiffies; /* the frame's jiffies */ 145 int timestamp; /* the timestamp to be sent */ 146 int prev_scantime; /* scantime reported previously */ 147 148 bool have_contact_count; 149 }; 150 151 struct mt_class { 152 __s32 name; /* MT_CLS */ 153 __s32 quirks; 154 __s32 sn_move; /* Signal/noise ratio for move events */ 155 __s32 sn_width; /* Signal/noise ratio for width events */ 156 __s32 sn_height; /* Signal/noise ratio for height events */ 157 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 158 __u8 maxcontacts; 159 bool is_indirect; /* true for touchpads */ 160 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 161 }; 162 163 struct mt_report_data { 164 struct list_head list; 165 struct hid_report *report; 166 struct mt_application *application; 167 bool is_mt_collection; 168 }; 169 170 struct mt_device { 171 struct mt_class mtclass; /* our mt device class */ 172 struct timer_list release_timer; /* to release sticky fingers */ 173 struct hid_haptic_device *haptic; /* haptic related configuration */ 174 struct hid_device *hdev; /* hid_device we're attached to */ 175 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 176 __u8 inputmode_value; /* InputMode HID feature value */ 177 __u8 maxcontacts; 178 bool is_buttonpad; /* is this device a button pad? */ 179 bool is_haptic_touchpad; /* is this device a haptic touchpad? */ 180 bool serial_maybe; /* need to check for serial protocol */ 181 182 struct list_head applications; 183 struct list_head reports; 184 }; 185 186 static void mt_post_parse_default_settings(struct mt_device *td, 187 struct mt_application *app); 188 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 189 190 /* classes of device behavior */ 191 #define MT_CLS_DEFAULT 0x0001 192 193 #define MT_CLS_SERIAL 0x0002 194 #define MT_CLS_CONFIDENCE 0x0003 195 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 196 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 197 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 198 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 199 /* reserved 0x0008 */ 200 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 201 #define MT_CLS_NSMU 0x000a 202 /* reserved 0x0010 */ 203 /* reserved 0x0011 */ 204 #define MT_CLS_WIN_8 0x0012 205 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 206 /* reserved 0x0014 */ 207 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 208 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 209 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 210 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 211 212 /* vendor specific classes */ 213 #define MT_CLS_3M 0x0101 214 /* reserved 0x0102 */ 215 #define MT_CLS_EGALAX 0x0103 216 #define MT_CLS_EGALAX_SERIAL 0x0104 217 #define MT_CLS_TOPSEED 0x0105 218 #define MT_CLS_PANASONIC 0x0106 219 #define MT_CLS_FLATFROG 0x0107 220 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 221 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 222 #define MT_CLS_LG 0x010a 223 #define MT_CLS_ASUS 0x010b 224 #define MT_CLS_VTL 0x0110 225 #define MT_CLS_GOOGLE 0x0111 226 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 227 #define MT_CLS_SMART_TECH 0x0113 228 #define MT_CLS_APPLE_TOUCHBAR 0x0114 229 #define MT_CLS_SIS 0x0457 230 231 #define MT_DEFAULT_MAXCONTACT 10 232 #define MT_MAX_MAXCONTACT 250 233 234 /* 235 * Resync device and local timestamps after that many microseconds without 236 * receiving data. 237 */ 238 #define MAX_TIMESTAMP_INTERVAL 1000000 239 240 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 241 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 242 243 /* 244 * these device-dependent functions determine what slot corresponds 245 * to a valid contact that was just read. 246 */ 247 248 static int cypress_compute_slot(struct mt_application *application, 249 struct mt_usages *slot) 250 { 251 if (*slot->contactid != 0 || application->num_received == 0) 252 return *slot->contactid; 253 else 254 return -1; 255 } 256 257 static const struct mt_class mt_classes[] = { 258 { .name = MT_CLS_DEFAULT, 259 .quirks = MT_QUIRK_ALWAYS_VALID | 260 MT_QUIRK_CONTACT_CNT_ACCURATE }, 261 { .name = MT_CLS_NSMU, 262 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 263 { .name = MT_CLS_SERIAL, 264 .quirks = MT_QUIRK_ALWAYS_VALID}, 265 { .name = MT_CLS_CONFIDENCE, 266 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 267 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 268 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 269 MT_QUIRK_SLOT_IS_CONTACTID }, 270 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 271 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 272 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 273 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 274 .quirks = MT_QUIRK_VALID_IS_INRANGE | 275 MT_QUIRK_SLOT_IS_CONTACTID, 276 .maxcontacts = 2 }, 277 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 278 .quirks = MT_QUIRK_VALID_IS_INRANGE | 279 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 280 .maxcontacts = 2 }, 281 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 282 .quirks = MT_QUIRK_VALID_IS_INRANGE | 283 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 284 { .name = MT_CLS_WIN_8, 285 .quirks = MT_QUIRK_ALWAYS_VALID | 286 MT_QUIRK_IGNORE_DUPLICATES | 287 MT_QUIRK_HOVERING | 288 MT_QUIRK_CONTACT_CNT_ACCURATE | 289 MT_QUIRK_STICKY_FINGERS | 290 MT_QUIRK_WIN8_PTP_BUTTONS, 291 .export_all_inputs = true }, 292 { .name = MT_CLS_EXPORT_ALL_INPUTS, 293 .quirks = MT_QUIRK_ALWAYS_VALID | 294 MT_QUIRK_CONTACT_CNT_ACCURATE, 295 .export_all_inputs = true }, 296 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 297 .quirks = MT_QUIRK_ALWAYS_VALID | 298 MT_QUIRK_IGNORE_DUPLICATES | 299 MT_QUIRK_HOVERING | 300 MT_QUIRK_CONTACT_CNT_ACCURATE | 301 MT_QUIRK_STICKY_FINGERS | 302 MT_QUIRK_WIN8_PTP_BUTTONS | 303 MT_QUIRK_FORCE_MULTI_INPUT, 304 .export_all_inputs = true }, 305 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 306 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 307 MT_QUIRK_HOVERING | 308 MT_QUIRK_CONTACT_CNT_ACCURATE | 309 MT_QUIRK_STICKY_FINGERS | 310 MT_QUIRK_WIN8_PTP_BUTTONS | 311 MT_QUIRK_FORCE_MULTI_INPUT | 312 MT_QUIRK_NOT_SEEN_MEANS_UP, 313 .export_all_inputs = true }, 314 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 315 .quirks = MT_QUIRK_ALWAYS_VALID | 316 MT_QUIRK_IGNORE_DUPLICATES | 317 MT_QUIRK_HOVERING | 318 MT_QUIRK_CONTACT_CNT_ACCURATE | 319 MT_QUIRK_STICKY_FINGERS | 320 MT_QUIRK_WIN8_PTP_BUTTONS | 321 MT_QUIRK_DISABLE_WAKEUP, 322 .export_all_inputs = true }, 323 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 324 .quirks = MT_QUIRK_ALWAYS_VALID | 325 MT_QUIRK_IGNORE_DUPLICATES | 326 MT_QUIRK_HOVERING | 327 MT_QUIRK_CONTACT_CNT_ACCURATE | 328 MT_QUIRK_WIN8_PTP_BUTTONS, 329 .export_all_inputs = true }, 330 331 /* 332 * vendor specific classes 333 */ 334 { .name = MT_CLS_3M, 335 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 336 MT_QUIRK_SLOT_IS_CONTACTID | 337 MT_QUIRK_TOUCH_SIZE_SCALING, 338 .sn_move = 2048, 339 .sn_width = 128, 340 .sn_height = 128, 341 .maxcontacts = 60, 342 }, 343 { .name = MT_CLS_EGALAX, 344 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 345 MT_QUIRK_VALID_IS_INRANGE, 346 .sn_move = 4096, 347 .sn_pressure = 32, 348 }, 349 { .name = MT_CLS_EGALAX_SERIAL, 350 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 351 MT_QUIRK_ALWAYS_VALID, 352 .sn_move = 4096, 353 .sn_pressure = 32, 354 }, 355 { .name = MT_CLS_TOPSEED, 356 .quirks = MT_QUIRK_ALWAYS_VALID, 357 .is_indirect = true, 358 .maxcontacts = 2, 359 }, 360 { .name = MT_CLS_PANASONIC, 361 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 362 .maxcontacts = 4 }, 363 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 364 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 365 MT_QUIRK_VALID_IS_INRANGE | 366 MT_QUIRK_SLOT_IS_CONTACTID, 367 .maxcontacts = 2 368 }, 369 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 370 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 371 MT_QUIRK_SLOT_IS_CONTACTID 372 }, 373 374 { .name = MT_CLS_FLATFROG, 375 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 376 MT_QUIRK_NO_AREA, 377 .sn_move = 2048, 378 .maxcontacts = 40, 379 }, 380 { .name = MT_CLS_LG, 381 .quirks = MT_QUIRK_ALWAYS_VALID | 382 MT_QUIRK_FIX_CONST_CONTACT_ID | 383 MT_QUIRK_IGNORE_DUPLICATES | 384 MT_QUIRK_HOVERING | 385 MT_QUIRK_CONTACT_CNT_ACCURATE }, 386 { .name = MT_CLS_ASUS, 387 .quirks = MT_QUIRK_ALWAYS_VALID | 388 MT_QUIRK_CONTACT_CNT_ACCURATE | 389 MT_QUIRK_ASUS_CUSTOM_UP }, 390 { .name = MT_CLS_VTL, 391 .quirks = MT_QUIRK_ALWAYS_VALID | 392 MT_QUIRK_CONTACT_CNT_ACCURATE | 393 MT_QUIRK_FORCE_GET_FEATURE, 394 }, 395 { .name = MT_CLS_GOOGLE, 396 .quirks = MT_QUIRK_ALWAYS_VALID | 397 MT_QUIRK_CONTACT_CNT_ACCURATE | 398 MT_QUIRK_SLOT_IS_CONTACTID | 399 MT_QUIRK_HOVERING 400 }, 401 { .name = MT_CLS_RAZER_BLADE_STEALTH, 402 .quirks = MT_QUIRK_ALWAYS_VALID | 403 MT_QUIRK_IGNORE_DUPLICATES | 404 MT_QUIRK_HOVERING | 405 MT_QUIRK_CONTACT_CNT_ACCURATE | 406 MT_QUIRK_WIN8_PTP_BUTTONS, 407 }, 408 { .name = MT_CLS_SMART_TECH, 409 .quirks = MT_QUIRK_ALWAYS_VALID | 410 MT_QUIRK_IGNORE_DUPLICATES | 411 MT_QUIRK_CONTACT_CNT_ACCURATE | 412 MT_QUIRK_SEPARATE_APP_REPORT, 413 }, 414 { .name = MT_CLS_APPLE_TOUCHBAR, 415 .quirks = MT_QUIRK_HOVERING | 416 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 417 MT_QUIRK_APPLE_TOUCHBAR, 418 .maxcontacts = 11, 419 }, 420 { .name = MT_CLS_SIS, 421 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 422 MT_QUIRK_ALWAYS_VALID | 423 MT_QUIRK_CONTACT_CNT_ACCURATE, 424 }, 425 { } 426 }; 427 428 static ssize_t mt_show_quirks(struct device *dev, 429 struct device_attribute *attr, 430 char *buf) 431 { 432 struct hid_device *hdev = to_hid_device(dev); 433 struct mt_device *td = hid_get_drvdata(hdev); 434 435 return sprintf(buf, "%u\n", td->mtclass.quirks); 436 } 437 438 static ssize_t mt_set_quirks(struct device *dev, 439 struct device_attribute *attr, 440 const char *buf, size_t count) 441 { 442 struct hid_device *hdev = to_hid_device(dev); 443 struct mt_device *td = hid_get_drvdata(hdev); 444 struct mt_application *application; 445 446 unsigned long val; 447 448 if (kstrtoul(buf, 0, &val)) 449 return -EINVAL; 450 451 td->mtclass.quirks = val; 452 453 list_for_each_entry(application, &td->applications, list) { 454 application->quirks = val; 455 if (!application->have_contact_count) 456 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 457 } 458 459 return count; 460 } 461 462 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 463 464 static struct attribute *sysfs_attrs[] = { 465 &dev_attr_quirks.attr, 466 NULL 467 }; 468 469 static const struct attribute_group mt_attribute_group = { 470 .attrs = sysfs_attrs 471 }; 472 473 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 474 { 475 int ret; 476 u32 size = hid_report_len(report); 477 u8 *buf; 478 479 /* 480 * Do not fetch the feature report if the device has been explicitly 481 * marked as non-capable. 482 */ 483 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 484 return; 485 486 buf = hid_alloc_report_buf(report, GFP_KERNEL); 487 if (!buf) 488 return; 489 490 ret = hid_hw_raw_request(hdev, report->id, buf, size, 491 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 492 if (ret < 0) { 493 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 494 report->id); 495 } else { 496 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 497 size, 0); 498 if (ret) 499 dev_warn(&hdev->dev, "failed to report feature\n"); 500 } 501 502 kfree(buf); 503 } 504 505 static void mt_feature_mapping(struct hid_device *hdev, 506 struct hid_field *field, struct hid_usage *usage) 507 { 508 struct mt_device *td = hid_get_drvdata(hdev); 509 510 switch (usage->hid) { 511 case HID_DG_CONTACTMAX: 512 mt_get_feature(hdev, field->report); 513 514 td->maxcontacts = field->value[0]; 515 if (!td->maxcontacts && 516 field->logical_maximum <= MT_MAX_MAXCONTACT) 517 td->maxcontacts = field->logical_maximum; 518 if (td->mtclass.maxcontacts) 519 /* check if the maxcontacts is given by the class */ 520 td->maxcontacts = td->mtclass.maxcontacts; 521 522 break; 523 case HID_DG_BUTTONTYPE: 524 if (usage->usage_index >= field->report_count) { 525 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 526 break; 527 } 528 529 mt_get_feature(hdev, field->report); 530 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 531 td->is_buttonpad = true; 532 533 break; 534 case 0xff0000c5: 535 /* Retrieve the Win8 blob once to enable some devices */ 536 if (usage->usage_index == 0) 537 mt_get_feature(hdev, field->report); 538 break; 539 } 540 541 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 542 } 543 544 static void set_abs(struct input_dev *input, unsigned int code, 545 struct hid_field *field, int snratio) 546 { 547 int fmin = field->logical_minimum; 548 int fmax = field->logical_maximum; 549 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 550 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 551 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 552 } 553 554 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 555 struct mt_application *application) 556 { 557 struct mt_usages *usage; 558 559 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 560 if (!usage) 561 return NULL; 562 563 /* set some defaults so we do not need to check for null pointers */ 564 usage->x = DEFAULT_ZERO; 565 usage->y = DEFAULT_ZERO; 566 usage->cx = DEFAULT_ZERO; 567 usage->cy = DEFAULT_ZERO; 568 usage->p = DEFAULT_ZERO; 569 usage->w = DEFAULT_ZERO; 570 usage->h = DEFAULT_ZERO; 571 usage->a = DEFAULT_ZERO; 572 usage->contactid = DEFAULT_ZERO; 573 usage->tip_state = DEFAULT_FALSE; 574 usage->inrange_state = DEFAULT_FALSE; 575 usage->confidence_state = DEFAULT_TRUE; 576 577 list_add_tail(&usage->list, &application->mt_usages); 578 579 return usage; 580 } 581 582 static struct mt_application *mt_allocate_application(struct mt_device *td, 583 struct hid_report *report) 584 { 585 unsigned int application = report->application; 586 struct mt_application *mt_application; 587 588 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 589 GFP_KERNEL); 590 if (!mt_application) 591 return NULL; 592 593 mt_application->application = application; 594 INIT_LIST_HEAD(&mt_application->mt_usages); 595 596 if (application == HID_DG_TOUCHSCREEN) 597 mt_application->mt_flags |= INPUT_MT_DIRECT; 598 599 /* 600 * Model touchscreens providing buttons as touchpads. 601 */ 602 if (application == HID_DG_TOUCHPAD) { 603 mt_application->mt_flags |= INPUT_MT_POINTER; 604 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 605 } 606 607 mt_application->scantime = DEFAULT_ZERO; 608 mt_application->raw_cc = DEFAULT_ZERO; 609 mt_application->quirks = td->mtclass.quirks; 610 mt_application->report_id = report->id; 611 612 list_add_tail(&mt_application->list, &td->applications); 613 614 return mt_application; 615 } 616 617 static struct mt_application *mt_find_application(struct mt_device *td, 618 struct hid_report *report) 619 { 620 unsigned int application = report->application; 621 struct mt_application *tmp, *mt_application = NULL; 622 623 list_for_each_entry(tmp, &td->applications, list) { 624 if (application == tmp->application) { 625 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 626 tmp->report_id == report->id) { 627 mt_application = tmp; 628 break; 629 } 630 } 631 } 632 633 if (!mt_application) 634 mt_application = mt_allocate_application(td, report); 635 636 return mt_application; 637 } 638 639 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 640 struct hid_report *report) 641 { 642 struct mt_class *cls = &td->mtclass; 643 struct mt_report_data *rdata; 644 struct hid_field *field; 645 int r, n; 646 647 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 648 if (!rdata) 649 return NULL; 650 651 rdata->report = report; 652 rdata->application = mt_find_application(td, report); 653 654 if (!rdata->application) { 655 devm_kfree(&td->hdev->dev, rdata); 656 return NULL; 657 } 658 659 for (r = 0; r < report->maxfield; r++) { 660 field = report->field[r]; 661 662 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 663 continue; 664 665 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 666 for (n = 0; n < field->report_count; n++) { 667 unsigned int hid = field->usage[n].hid; 668 669 if (hid == HID_DG_CONTACTID || 670 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 671 hid == HID_DG_TRANSDUCER_INDEX)) { 672 rdata->is_mt_collection = true; 673 break; 674 } 675 } 676 } 677 } 678 679 list_add_tail(&rdata->list, &td->reports); 680 681 return rdata; 682 } 683 684 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 685 struct hid_report *report) 686 { 687 struct mt_report_data *tmp, *rdata = NULL; 688 689 list_for_each_entry(tmp, &td->reports, list) { 690 if (report == tmp->report) { 691 rdata = tmp; 692 break; 693 } 694 } 695 696 if (!rdata) 697 rdata = mt_allocate_report_data(td, report); 698 699 return rdata; 700 } 701 702 static void mt_store_field(struct hid_device *hdev, 703 struct mt_application *application, 704 __s32 *value, 705 size_t offset) 706 { 707 struct mt_usages *usage; 708 __s32 **target; 709 710 if (list_empty(&application->mt_usages)) 711 usage = mt_allocate_usage(hdev, application); 712 else 713 usage = list_last_entry(&application->mt_usages, 714 struct mt_usages, 715 list); 716 717 if (!usage) 718 return; 719 720 target = (__s32 **)((char *)usage + offset); 721 722 /* the value has already been filled, create a new slot */ 723 if (*target != DEFAULT_TRUE && 724 *target != DEFAULT_FALSE && 725 *target != DEFAULT_ZERO) { 726 if (usage->contactid == DEFAULT_ZERO || 727 usage->x == DEFAULT_ZERO || 728 usage->y == DEFAULT_ZERO) { 729 hid_dbg(hdev, 730 "ignoring duplicate usage on incomplete"); 731 return; 732 } 733 usage = mt_allocate_usage(hdev, application); 734 if (!usage) 735 return; 736 737 target = (__s32 **)((char *)usage + offset); 738 } 739 740 *target = value; 741 } 742 743 #define MT_STORE_FIELD(__name) \ 744 mt_store_field(hdev, app, \ 745 &field->value[usage->usage_index], \ 746 offsetof(struct mt_usages, __name)) 747 748 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 749 struct hid_field *field, struct hid_usage *usage, 750 unsigned long **bit, int *max, struct mt_application *app) 751 { 752 struct mt_device *td = hid_get_drvdata(hdev); 753 struct mt_class *cls = &td->mtclass; 754 int code; 755 struct hid_usage *prev_usage = NULL; 756 757 /* 758 * Model touchscreens providing buttons as touchpads. 759 */ 760 if (field->application == HID_DG_TOUCHSCREEN && 761 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 762 app->mt_flags |= INPUT_MT_POINTER; 763 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 764 } 765 766 /* count the buttons on touchpads */ 767 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 768 app->buttons_count++; 769 770 if (usage->usage_index) 771 prev_usage = &field->usage[usage->usage_index - 1]; 772 773 switch (usage->hid & HID_USAGE_PAGE) { 774 775 case HID_UP_GENDESK: 776 switch (usage->hid) { 777 case HID_GD_X: 778 if (prev_usage && (prev_usage->hid == usage->hid)) { 779 code = ABS_MT_TOOL_X; 780 MT_STORE_FIELD(cx); 781 } else { 782 code = ABS_MT_POSITION_X; 783 MT_STORE_FIELD(x); 784 } 785 786 set_abs(hi->input, code, field, cls->sn_move); 787 788 /* 789 * A system multi-axis that exports X and Y has a high 790 * chance of being used directly on a surface 791 */ 792 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 793 __set_bit(INPUT_PROP_DIRECT, 794 hi->input->propbit); 795 input_set_abs_params(hi->input, 796 ABS_MT_TOOL_TYPE, 797 MT_TOOL_DIAL, 798 MT_TOOL_DIAL, 0, 0); 799 } 800 801 return 1; 802 case HID_GD_Y: 803 if (prev_usage && (prev_usage->hid == usage->hid)) { 804 code = ABS_MT_TOOL_Y; 805 MT_STORE_FIELD(cy); 806 } else { 807 code = ABS_MT_POSITION_Y; 808 MT_STORE_FIELD(y); 809 } 810 811 set_abs(hi->input, code, field, cls->sn_move); 812 813 return 1; 814 } 815 return 0; 816 817 case HID_UP_DIGITIZER: 818 switch (usage->hid) { 819 case HID_DG_INRANGE: 820 if (app->quirks & MT_QUIRK_HOVERING) { 821 input_set_abs_params(hi->input, 822 ABS_MT_DISTANCE, 0, 1, 0, 0); 823 } 824 MT_STORE_FIELD(inrange_state); 825 return 1; 826 case HID_DG_CONFIDENCE: 827 if ((cls->name == MT_CLS_WIN_8 || 828 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 829 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 830 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 831 (field->application == HID_DG_TOUCHPAD || 832 field->application == HID_DG_TOUCHSCREEN)) 833 app->quirks |= MT_QUIRK_CONFIDENCE; 834 835 if (app->quirks & MT_QUIRK_CONFIDENCE) 836 input_set_abs_params(hi->input, 837 ABS_MT_TOOL_TYPE, 838 MT_TOOL_FINGER, 839 MT_TOOL_PALM, 0, 0); 840 841 MT_STORE_FIELD(confidence_state); 842 return 1; 843 case HID_DG_TOUCH: 844 /* 845 * Legacy devices use TIPSWITCH and not TOUCH. 846 * One special case here is of the Apple Touch Bars. 847 * In these devices, the tip state is contained in 848 * fields with the HID_DG_TOUCH usage. 849 * Let's just ignore this field for other devices. 850 */ 851 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 852 return -1; 853 fallthrough; 854 case HID_DG_TIPSWITCH: 855 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 856 input_set_capability(hi->input, 857 EV_KEY, BTN_TOUCH); 858 MT_STORE_FIELD(tip_state); 859 return 1; 860 case HID_DG_TRANSDUCER_INDEX: 861 /* 862 * Contact ID in case of Apple Touch Bars is contained 863 * in fields with HID_DG_TRANSDUCER_INDEX usage. 864 */ 865 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 866 return 0; 867 fallthrough; 868 case HID_DG_CONTACTID: 869 MT_STORE_FIELD(contactid); 870 app->touches_by_report++; 871 return 1; 872 case HID_DG_WIDTH: 873 if (!(app->quirks & MT_QUIRK_NO_AREA)) 874 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 875 cls->sn_width); 876 MT_STORE_FIELD(w); 877 return 1; 878 case HID_DG_HEIGHT: 879 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 880 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 881 cls->sn_height); 882 883 /* 884 * Only set ABS_MT_ORIENTATION if it is not 885 * already set by the HID_DG_AZIMUTH usage. 886 */ 887 if (!test_bit(ABS_MT_ORIENTATION, 888 hi->input->absbit)) 889 input_set_abs_params(hi->input, 890 ABS_MT_ORIENTATION, 0, 1, 0, 0); 891 } 892 MT_STORE_FIELD(h); 893 return 1; 894 case HID_DG_TIPPRESSURE: 895 set_abs(hi->input, ABS_MT_PRESSURE, field, 896 cls->sn_pressure); 897 td->is_haptic_touchpad = 898 hid_haptic_check_pressure_unit(td->haptic, 899 hi, field); 900 MT_STORE_FIELD(p); 901 return 1; 902 case HID_DG_SCANTIME: 903 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 904 app->scantime = &field->value[usage->usage_index]; 905 app->scantime_logical_max = field->logical_maximum; 906 return 1; 907 case HID_DG_CONTACTCOUNT: 908 app->have_contact_count = true; 909 app->raw_cc = &field->value[usage->usage_index]; 910 return 1; 911 case HID_DG_AZIMUTH: 912 /* 913 * Azimuth has the range of [0, MAX) representing a full 914 * revolution. Set ABS_MT_ORIENTATION to a quarter of 915 * MAX according the definition of ABS_MT_ORIENTATION 916 */ 917 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 918 -field->logical_maximum / 4, 919 field->logical_maximum / 4, 920 cls->sn_move ? 921 field->logical_maximum / cls->sn_move : 0, 0); 922 MT_STORE_FIELD(a); 923 return 1; 924 case HID_DG_CONTACTMAX: 925 /* contact max are global to the report */ 926 return -1; 927 } 928 /* let hid-input decide for the others */ 929 return 0; 930 931 case HID_UP_BUTTON: 932 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 933 /* 934 * MS PTP spec says that external buttons left and right have 935 * usages 2 and 3. 936 */ 937 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 938 field->application == HID_DG_TOUCHPAD && 939 (usage->hid & HID_USAGE) > 1) 940 code--; 941 942 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 943 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 944 945 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 946 if (!*bit) 947 return -1; 948 input_set_capability(hi->input, EV_KEY, code); 949 return 1; 950 951 case 0xff000000: 952 /* we do not want to map these: no input-oriented meaning */ 953 return -1; 954 } 955 956 return 0; 957 } 958 959 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 960 struct mt_usages *slot, 961 struct input_dev *input) 962 { 963 __s32 quirks = app->quirks; 964 965 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 966 return *slot->contactid; 967 968 if (quirks & MT_QUIRK_CYPRESS) 969 return cypress_compute_slot(app, slot); 970 971 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 972 return app->num_received; 973 974 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 975 return *slot->contactid - 1; 976 977 return input_mt_get_slot_by_key(input, *slot->contactid); 978 } 979 980 static void mt_release_pending_palms(struct mt_device *td, 981 struct mt_application *app, 982 struct input_dev *input) 983 { 984 int slotnum; 985 bool need_sync = false; 986 987 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 988 clear_bit(slotnum, app->pending_palm_slots); 989 990 input_mt_slot(input, slotnum); 991 input_mt_report_slot_inactive(input); 992 993 need_sync = true; 994 } 995 996 if (need_sync) { 997 input_mt_sync_frame(input); 998 input_sync(input); 999 } 1000 } 1001 1002 /* 1003 * this function is called when a whole packet has been received and processed, 1004 * so that it can decide what to send to the input layer. 1005 */ 1006 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1007 struct input_dev *input) 1008 { 1009 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1010 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1011 1012 input_mt_sync_frame(input); 1013 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1014 input_sync(input); 1015 1016 mt_release_pending_palms(td, app, input); 1017 1018 app->num_received = 0; 1019 app->left_button_state = 0; 1020 if (td->is_haptic_touchpad) 1021 hid_haptic_pressure_reset(td->haptic); 1022 1023 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 1024 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 1025 else 1026 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 1027 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1028 } 1029 1030 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1031 { 1032 long delta = value - app->prev_scantime; 1033 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1034 1035 app->jiffies = jiffies; 1036 1037 if (delta < 0) 1038 delta += app->scantime_logical_max; 1039 1040 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1041 delta *= 100; 1042 1043 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1044 /* No data received for a while, resync the timestamp. */ 1045 return 0; 1046 else 1047 return app->timestamp + delta; 1048 } 1049 1050 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1051 struct hid_usage *usage, __s32 value) 1052 { 1053 /* we will handle the hidinput part later, now remains hiddev */ 1054 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1055 hid->hiddev_hid_event(hid, field, usage, value); 1056 1057 return 1; 1058 } 1059 1060 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1061 struct mt_application *app, 1062 struct mt_usages *slot) 1063 { 1064 struct input_mt *mt = input->mt; 1065 struct hid_device *hdev = td->hdev; 1066 __s32 quirks = app->quirks; 1067 bool valid = true; 1068 bool confidence_state = true; 1069 bool inrange_state = false; 1070 int active; 1071 int slotnum; 1072 int tool = MT_TOOL_FINGER; 1073 1074 if (!slot) 1075 return -EINVAL; 1076 1077 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1078 app->num_received >= app->num_expected) 1079 return -EAGAIN; 1080 1081 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1082 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1083 valid = *slot->inrange_state; 1084 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1085 valid = *slot->tip_state; 1086 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1087 valid = *slot->confidence_state; 1088 1089 if (!valid) 1090 return 0; 1091 } 1092 1093 slotnum = mt_compute_slot(td, app, slot, input); 1094 if (slotnum < 0 || slotnum >= td->maxcontacts) 1095 return 0; 1096 1097 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1098 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1099 1100 if (input_mt_is_active(i_slot) && 1101 input_mt_is_used(mt, i_slot)) 1102 return -EAGAIN; 1103 } 1104 1105 if (quirks & MT_QUIRK_CONFIDENCE) 1106 confidence_state = *slot->confidence_state; 1107 1108 if (quirks & MT_QUIRK_HOVERING) 1109 inrange_state = *slot->inrange_state; 1110 1111 active = *slot->tip_state || inrange_state; 1112 1113 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1114 tool = MT_TOOL_DIAL; 1115 else if (unlikely(!confidence_state)) { 1116 tool = MT_TOOL_PALM; 1117 if (!active && mt && 1118 input_mt_is_active(&mt->slots[slotnum])) { 1119 /* 1120 * The non-confidence was reported for 1121 * previously valid contact that is also no 1122 * longer valid. We can't simply report 1123 * lift-off as userspace will not be aware 1124 * of non-confidence, so we need to split 1125 * it into 2 events: active MT_TOOL_PALM 1126 * and a separate liftoff. 1127 */ 1128 active = true; 1129 set_bit(slotnum, app->pending_palm_slots); 1130 } 1131 } 1132 1133 input_mt_slot(input, slotnum); 1134 input_mt_report_slot_state(input, tool, active); 1135 if (active) { 1136 /* this finger is in proximity of the sensor */ 1137 int wide = (*slot->w > *slot->h); 1138 int major = max(*slot->w, *slot->h); 1139 int minor = min(*slot->w, *slot->h); 1140 int orientation = wide; 1141 int max_azimuth; 1142 int azimuth; 1143 int x; 1144 int y; 1145 int cx; 1146 int cy; 1147 1148 if (slot->a != DEFAULT_ZERO) { 1149 /* 1150 * Azimuth is counter-clockwise and ranges from [0, MAX) 1151 * (a full revolution). Convert it to clockwise ranging 1152 * [-MAX/2, MAX/2]. 1153 * 1154 * Note that ABS_MT_ORIENTATION require us to report 1155 * the limit of [-MAX/4, MAX/4], but the value can go 1156 * out of range to [-MAX/2, MAX/2] to report an upside 1157 * down ellipsis. 1158 */ 1159 azimuth = *slot->a; 1160 max_azimuth = input_abs_get_max(input, 1161 ABS_MT_ORIENTATION); 1162 if (azimuth > max_azimuth * 2) 1163 azimuth -= max_azimuth * 4; 1164 orientation = -azimuth; 1165 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1166 orientation = -orientation; 1167 1168 } 1169 1170 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1171 /* 1172 * divided by two to match visual scale of touch 1173 * for devices with this quirk 1174 */ 1175 major = major >> 1; 1176 minor = minor >> 1; 1177 } 1178 1179 if (td->is_haptic_touchpad) 1180 hid_haptic_pressure_increase(td->haptic, *slot->p); 1181 1182 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1183 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1184 *slot->x; 1185 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1186 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1187 *slot->y; 1188 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1189 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1190 *slot->cx; 1191 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1192 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1193 *slot->cy; 1194 1195 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1196 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1197 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1198 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1199 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1200 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1201 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1202 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1203 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1204 1205 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 1206 } 1207 1208 return 0; 1209 } 1210 1211 static void mt_process_mt_event(struct hid_device *hid, 1212 struct mt_application *app, 1213 struct hid_field *field, 1214 struct hid_usage *usage, 1215 __s32 value, 1216 bool first_packet) 1217 { 1218 __s32 quirks = app->quirks; 1219 struct input_dev *input = field->hidinput->input; 1220 1221 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1222 return; 1223 1224 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1225 1226 /* 1227 * For Win8 PTP touchpads we should only look at 1228 * non finger/touch events in the first_packet of a 1229 * (possible) multi-packet frame. 1230 */ 1231 if (!first_packet) 1232 return; 1233 1234 /* 1235 * For Win8 PTP touchpads we map both the clickpad click 1236 * and any "external" left buttons to BTN_LEFT if a 1237 * device claims to have both we need to report 1 for 1238 * BTN_LEFT if either is pressed, so we or all values 1239 * together and report the result in mt_sync_frame(). 1240 */ 1241 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1242 app->left_button_state |= value; 1243 return; 1244 } 1245 } 1246 1247 input_event(input, usage->type, usage->code, value); 1248 } 1249 1250 static void mt_touch_report(struct hid_device *hid, 1251 struct mt_report_data *rdata) 1252 { 1253 struct mt_device *td = hid_get_drvdata(hid); 1254 struct hid_report *report = rdata->report; 1255 struct mt_application *app = rdata->application; 1256 struct hid_field *field; 1257 struct input_dev *input; 1258 struct mt_usages *slot; 1259 bool first_packet; 1260 unsigned count; 1261 int r, n; 1262 int scantime = 0; 1263 int contact_count = -1; 1264 1265 /* sticky fingers release in progress, abort */ 1266 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1267 return; 1268 1269 scantime = *app->scantime; 1270 app->timestamp = mt_compute_timestamp(app, scantime); 1271 if (app->raw_cc != DEFAULT_ZERO) 1272 contact_count = *app->raw_cc; 1273 1274 /* 1275 * Includes multi-packet support where subsequent 1276 * packets are sent with zero contactcount. 1277 */ 1278 if (contact_count >= 0) { 1279 /* 1280 * For Win8 PTPs the first packet (td->num_received == 0) may 1281 * have a contactcount of 0 if there only is a button event. 1282 * We double check that this is not a continuation packet 1283 * of a possible multi-packet frame be checking that the 1284 * timestamp has changed. 1285 */ 1286 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1287 app->num_received == 0 && 1288 app->prev_scantime != scantime) 1289 app->num_expected = contact_count; 1290 /* A non 0 contact count always indicates a first packet */ 1291 else if (contact_count) 1292 app->num_expected = contact_count; 1293 } 1294 app->prev_scantime = scantime; 1295 1296 first_packet = app->num_received == 0; 1297 1298 input = report->field[0]->hidinput->input; 1299 1300 list_for_each_entry(slot, &app->mt_usages, list) { 1301 if (!mt_process_slot(td, input, app, slot)) 1302 app->num_received++; 1303 } 1304 1305 for (r = 0; r < report->maxfield; r++) { 1306 field = report->field[r]; 1307 count = field->report_count; 1308 1309 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1310 continue; 1311 1312 for (n = 0; n < count; n++) 1313 mt_process_mt_event(hid, app, field, 1314 &field->usage[n], field->value[n], 1315 first_packet); 1316 } 1317 1318 if (app->num_received >= app->num_expected) 1319 mt_sync_frame(td, app, input); 1320 1321 /* 1322 * Windows 8 specs says 2 things: 1323 * - once a contact has been reported, it has to be reported in each 1324 * subsequent report 1325 * - the report rate when fingers are present has to be at least 1326 * the refresh rate of the screen, 60 or 120 Hz 1327 * 1328 * I interprete this that the specification forces a report rate of 1329 * at least 60 Hz for a touchscreen to be certified. 1330 * Which means that if we do not get a report whithin 16 ms, either 1331 * something wrong happens, either the touchscreen forgets to send 1332 * a release. Taking a reasonable margin allows to remove issues 1333 * with USB communication or the load of the machine. 1334 * 1335 * Given that Win 8 devices are forced to send a release, this will 1336 * only affect laggish machines and the ones that have a firmware 1337 * defect. 1338 */ 1339 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1340 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1341 mod_timer(&td->release_timer, 1342 jiffies + msecs_to_jiffies(100)); 1343 else 1344 timer_delete(&td->release_timer); 1345 } 1346 1347 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1348 } 1349 1350 static int mt_touch_input_configured(struct hid_device *hdev, 1351 struct hid_input *hi, 1352 struct mt_application *app) 1353 { 1354 struct mt_device *td = hid_get_drvdata(hdev); 1355 struct mt_class *cls = &td->mtclass; 1356 struct input_dev *input = hi->input; 1357 int ret; 1358 1359 /* 1360 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1361 * but the maximum contact count is greater than the default. 1362 */ 1363 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1364 td->maxcontacts = cls->maxcontacts; 1365 1366 if (!td->maxcontacts) 1367 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1368 1369 mt_post_parse(td, app); 1370 if (td->serial_maybe) 1371 mt_post_parse_default_settings(td, app); 1372 1373 /* 1374 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1375 * but these devices are direct. 1376 */ 1377 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1378 app->mt_flags |= INPUT_MT_DIRECT; 1379 1380 if (cls->is_indirect) 1381 app->mt_flags |= INPUT_MT_POINTER; 1382 1383 if (td->is_haptic_touchpad) 1384 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1385 1386 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1387 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1388 1389 /* check for clickpads */ 1390 if ((app->mt_flags & INPUT_MT_POINTER) && 1391 (app->buttons_count == 1)) 1392 td->is_buttonpad = true; 1393 1394 if (td->is_buttonpad) 1395 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1396 1397 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1398 BITS_TO_LONGS(td->maxcontacts), 1399 sizeof(long), 1400 GFP_KERNEL); 1401 if (!app->pending_palm_slots) 1402 return -ENOMEM; 1403 1404 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1405 if (ret) 1406 return ret; 1407 1408 app->mt_flags = 0; 1409 return 0; 1410 } 1411 1412 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1413 max, EV_KEY, (c)) 1414 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1415 struct hid_field *field, struct hid_usage *usage, 1416 unsigned long **bit, int *max) 1417 { 1418 struct mt_device *td = hid_get_drvdata(hdev); 1419 struct mt_application *application; 1420 struct mt_report_data *rdata; 1421 int ret; 1422 1423 rdata = mt_find_report_data(td, field->report); 1424 if (!rdata) { 1425 hid_err(hdev, "failed to allocate data for report\n"); 1426 return 0; 1427 } 1428 1429 application = rdata->application; 1430 1431 /* 1432 * If mtclass.export_all_inputs is not set, only map fields from 1433 * TouchScreen or TouchPad collections. We need to ignore fields 1434 * that belong to other collections such as Mouse that might have 1435 * the same GenericDesktop usages. 1436 */ 1437 if (!td->mtclass.export_all_inputs && 1438 field->application != HID_DG_TOUCHSCREEN && 1439 field->application != HID_DG_PEN && 1440 field->application != HID_DG_TOUCHPAD && 1441 field->application != HID_GD_KEYBOARD && 1442 field->application != HID_GD_SYSTEM_CONTROL && 1443 field->application != HID_CP_CONSUMER_CONTROL && 1444 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1445 field->application != HID_GD_SYSTEM_MULTIAXIS && 1446 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1447 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1448 return -1; 1449 1450 /* 1451 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1452 * touchpad report descriptor. We need to treat these as an array to 1453 * map usages to input keys. 1454 */ 1455 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1456 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1457 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1458 set_bit(EV_REP, hi->input->evbit); 1459 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1460 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1461 switch (usage->hid & HID_USAGE) { 1462 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1463 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1464 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1465 case 0x6b: mt_map_key_clear(KEY_F21); break; 1466 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1467 default: 1468 return -1; 1469 } 1470 return 1; 1471 } 1472 1473 if (rdata->is_mt_collection) 1474 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1475 application); 1476 1477 /* 1478 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1479 * for the stylus. Overwrite the hid_input application 1480 */ 1481 if (field->physical == HID_DG_STYLUS) 1482 hi->application = HID_DG_STYLUS; 1483 1484 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1485 max); 1486 if (ret != 0) 1487 return ret; 1488 1489 /* let hid-core decide for the others */ 1490 return 0; 1491 } 1492 1493 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1494 struct hid_field *field, struct hid_usage *usage, 1495 unsigned long **bit, int *max) 1496 { 1497 struct mt_device *td = hid_get_drvdata(hdev); 1498 struct mt_report_data *rdata; 1499 1500 rdata = mt_find_report_data(td, field->report); 1501 if (rdata && rdata->is_mt_collection) { 1502 /* We own these mappings, tell hid-input to ignore them */ 1503 return -1; 1504 } 1505 1506 /* let hid-core decide for the others */ 1507 return 0; 1508 } 1509 1510 static int mt_event(struct hid_device *hid, struct hid_field *field, 1511 struct hid_usage *usage, __s32 value) 1512 { 1513 struct mt_device *td = hid_get_drvdata(hid); 1514 struct mt_report_data *rdata; 1515 1516 rdata = mt_find_report_data(td, field->report); 1517 if (rdata && rdata->is_mt_collection) 1518 return mt_touch_event(hid, field, usage, value); 1519 1520 return 0; 1521 } 1522 1523 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1524 unsigned int *size) 1525 { 1526 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1527 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1528 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1529 if (*size < 608) { 1530 dev_info( 1531 &hdev->dev, 1532 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1533 *size); 1534 return rdesc; 1535 } 1536 1537 if (rdesc[607] == 0x15) { 1538 rdesc[607] = 0x25; 1539 dev_info( 1540 &hdev->dev, 1541 "GT7868Q report descriptor fixup is applied.\n"); 1542 } else { 1543 dev_info( 1544 &hdev->dev, 1545 "The byte is not expected for fixing the report descriptor. \ 1546 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1547 got: %x\n", 1548 rdesc[607]); 1549 } 1550 } 1551 1552 return rdesc; 1553 } 1554 1555 static void mt_report(struct hid_device *hid, struct hid_report *report) 1556 { 1557 struct mt_device *td = hid_get_drvdata(hid); 1558 struct hid_field *field = report->field[0]; 1559 struct mt_report_data *rdata; 1560 1561 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1562 return; 1563 1564 rdata = mt_find_report_data(td, report); 1565 if (rdata && rdata->is_mt_collection) 1566 return mt_touch_report(hid, rdata); 1567 1568 if (field && field->hidinput && field->hidinput->input) 1569 input_sync(field->hidinput->input); 1570 } 1571 1572 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1573 struct hid_field *field, 1574 struct hid_usage *usage, 1575 enum latency_mode latency, 1576 enum report_mode report_mode, 1577 bool *inputmode_found) 1578 { 1579 struct mt_device *td = hid_get_drvdata(hdev); 1580 struct mt_class *cls = &td->mtclass; 1581 struct hid_report *report = field->report; 1582 unsigned int index = usage->usage_index; 1583 char *buf; 1584 u32 report_len; 1585 int max; 1586 1587 switch (usage->hid) { 1588 case HID_DG_INPUTMODE: 1589 /* 1590 * Some elan panels wrongly declare 2 input mode features, 1591 * and silently ignore when we set the value in the second 1592 * field. Skip the second feature and hope for the best. 1593 */ 1594 if (*inputmode_found) 1595 return false; 1596 1597 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1598 report_len = hid_report_len(report); 1599 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1600 if (!buf) { 1601 hid_err(hdev, 1602 "failed to allocate buffer for report\n"); 1603 return false; 1604 } 1605 hid_hw_raw_request(hdev, report->id, buf, report_len, 1606 HID_FEATURE_REPORT, 1607 HID_REQ_GET_REPORT); 1608 kfree(buf); 1609 } 1610 1611 field->value[index] = td->inputmode_value; 1612 *inputmode_found = true; 1613 return true; 1614 1615 case HID_DG_CONTACTMAX: 1616 if (cls->maxcontacts) { 1617 max = min_t(int, field->logical_maximum, 1618 cls->maxcontacts); 1619 if (field->value[index] != max) { 1620 field->value[index] = max; 1621 return true; 1622 } 1623 } 1624 break; 1625 1626 case HID_DG_LATENCYMODE: 1627 field->value[index] = latency; 1628 return true; 1629 1630 case HID_DG_SURFACESWITCH: 1631 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1632 return true; 1633 1634 case HID_DG_BUTTONSWITCH: 1635 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1636 return true; 1637 } 1638 1639 return false; /* no need to update the report */ 1640 } 1641 1642 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1643 enum report_mode report_mode) 1644 { 1645 struct hid_report_enum *rep_enum; 1646 struct hid_report *rep; 1647 struct hid_usage *usage; 1648 int i, j; 1649 bool update_report; 1650 bool inputmode_found = false; 1651 1652 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1653 list_for_each_entry(rep, &rep_enum->report_list, list) { 1654 update_report = false; 1655 1656 for (i = 0; i < rep->maxfield; i++) { 1657 /* Ignore if report count is out of bounds. */ 1658 if (rep->field[i]->report_count < 1) 1659 continue; 1660 1661 for (j = 0; j < rep->field[i]->maxusage; j++) { 1662 usage = &rep->field[i]->usage[j]; 1663 1664 if (mt_need_to_apply_feature(hdev, 1665 rep->field[i], 1666 usage, 1667 latency, 1668 report_mode, 1669 &inputmode_found)) 1670 update_report = true; 1671 } 1672 } 1673 1674 if (update_report) 1675 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1676 } 1677 } 1678 1679 static void mt_post_parse_default_settings(struct mt_device *td, 1680 struct mt_application *app) 1681 { 1682 __s32 quirks = app->quirks; 1683 1684 /* unknown serial device needs special quirks */ 1685 if (list_is_singular(&app->mt_usages)) { 1686 quirks |= MT_QUIRK_ALWAYS_VALID; 1687 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1688 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1689 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1690 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1691 } 1692 1693 app->quirks = quirks; 1694 } 1695 1696 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1697 { 1698 if (!app->have_contact_count) 1699 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1700 } 1701 1702 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1703 { 1704 struct mt_device *td = hid_get_drvdata(hdev); 1705 const char *suffix = NULL; 1706 struct mt_report_data *rdata; 1707 struct mt_application *mt_application = NULL; 1708 struct hid_report *report; 1709 int ret; 1710 1711 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1712 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT)) { 1713 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1714 td->is_haptic_touchpad = false; 1715 } else { 1716 td->is_haptic_touchpad = false; 1717 } 1718 1719 list_for_each_entry(report, &hi->reports, hidinput_list) { 1720 rdata = mt_find_report_data(td, report); 1721 if (!rdata) { 1722 hid_err(hdev, "failed to allocate data for report\n"); 1723 return -ENOMEM; 1724 } 1725 1726 mt_application = rdata->application; 1727 1728 if (rdata->is_mt_collection) { 1729 ret = mt_touch_input_configured(hdev, hi, 1730 mt_application); 1731 if (ret) 1732 return ret; 1733 } 1734 } 1735 1736 switch (hi->application) { 1737 case HID_GD_KEYBOARD: 1738 case HID_GD_KEYPAD: 1739 case HID_GD_MOUSE: 1740 case HID_DG_TOUCHPAD: 1741 case HID_GD_SYSTEM_CONTROL: 1742 case HID_CP_CONSUMER_CONTROL: 1743 case HID_GD_WIRELESS_RADIO_CTLS: 1744 case HID_GD_SYSTEM_MULTIAXIS: 1745 /* already handled by hid core */ 1746 break; 1747 case HID_DG_TOUCHSCREEN: 1748 /* we do not set suffix = "Touchscreen" */ 1749 hi->input->name = hdev->name; 1750 break; 1751 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1752 suffix = "Custom Media Keys"; 1753 break; 1754 case HID_DG_STYLUS: 1755 /* force BTN_STYLUS to allow tablet matching in udev */ 1756 __set_bit(BTN_STYLUS, hi->input->keybit); 1757 break; 1758 default: 1759 suffix = "UNKNOWN"; 1760 break; 1761 } 1762 1763 if (suffix) { 1764 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1765 "%s %s", hdev->name, suffix); 1766 if (!hi->input->name) 1767 return -ENOMEM; 1768 } 1769 1770 return 0; 1771 } 1772 1773 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1774 { 1775 if (field->usage[0].hid != usage || 1776 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1777 return; 1778 1779 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1780 field->flags |= HID_MAIN_ITEM_VARIABLE; 1781 } 1782 1783 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1784 { 1785 struct hid_report *report; 1786 int i; 1787 1788 list_for_each_entry(report, 1789 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1790 list) { 1791 1792 if (!report->maxfield) 1793 continue; 1794 1795 for (i = 0; i < report->maxfield; i++) 1796 if (report->field[i]->maxusage >= 1) 1797 mt_fix_const_field(report->field[i], usage); 1798 } 1799 } 1800 1801 static void mt_release_contacts(struct hid_device *hid) 1802 { 1803 struct hid_input *hidinput; 1804 struct mt_application *application; 1805 struct mt_device *td = hid_get_drvdata(hid); 1806 1807 list_for_each_entry(hidinput, &hid->inputs, list) { 1808 struct input_dev *input_dev = hidinput->input; 1809 struct input_mt *mt = input_dev->mt; 1810 int i; 1811 1812 if (mt) { 1813 for (i = 0; i < mt->num_slots; i++) { 1814 input_mt_slot(input_dev, i); 1815 input_mt_report_slot_inactive(input_dev); 1816 } 1817 input_mt_sync_frame(input_dev); 1818 input_sync(input_dev); 1819 } 1820 } 1821 1822 list_for_each_entry(application, &td->applications, list) { 1823 application->num_received = 0; 1824 } 1825 } 1826 1827 static void mt_expired_timeout(struct timer_list *t) 1828 { 1829 struct mt_device *td = timer_container_of(td, t, release_timer); 1830 struct hid_device *hdev = td->hdev; 1831 1832 /* 1833 * An input report came in just before we release the sticky fingers, 1834 * it will take care of the sticky fingers. 1835 */ 1836 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1837 return; 1838 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1839 mt_release_contacts(hdev); 1840 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1841 } 1842 1843 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1844 { 1845 int ret, i; 1846 struct mt_device *td; 1847 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1848 1849 for (i = 0; mt_classes[i].name ; i++) { 1850 if (id->driver_data == mt_classes[i].name) { 1851 mtclass = &(mt_classes[i]); 1852 break; 1853 } 1854 } 1855 1856 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1857 if (!td) { 1858 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1859 return -ENOMEM; 1860 } 1861 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL); 1862 if (!td->haptic) 1863 return -ENOMEM; 1864 1865 td->haptic->hdev = hdev; 1866 td->hdev = hdev; 1867 td->mtclass = *mtclass; 1868 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1869 hid_set_drvdata(hdev, td); 1870 1871 INIT_LIST_HEAD(&td->applications); 1872 INIT_LIST_HEAD(&td->reports); 1873 1874 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1875 td->serial_maybe = true; 1876 1877 1878 /* Orientation is inverted if the X or Y axes are 1879 * flipped, but normalized if both are inverted. 1880 */ 1881 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1882 !((hdev->quirks & HID_QUIRK_X_INVERT) 1883 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1884 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1885 1886 /* This allows the driver to correctly support devices 1887 * that emit events over several HID messages. 1888 */ 1889 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1890 1891 /* 1892 * This allows the driver to handle different input sensors 1893 * that emits events through different applications on the same HID 1894 * device. 1895 */ 1896 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1897 1898 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1899 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1900 1901 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1902 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1903 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1904 } 1905 1906 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1907 1908 ret = hid_parse(hdev); 1909 if (ret != 0) 1910 return ret; 1911 1912 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 1913 !hid_find_field(hdev, HID_INPUT_REPORT, 1914 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 1915 return -ENODEV; 1916 1917 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1918 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1919 1920 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 1921 hdev->quirks |= HID_QUIRK_NOGET; 1922 1923 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1924 if (ret) 1925 return ret; 1926 1927 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1928 if (ret) 1929 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1930 hdev->name); 1931 1932 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1933 1934 if (td->is_haptic_touchpad) { 1935 if (hid_haptic_init(hdev, &td->haptic)) { 1936 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n", 1937 hdev->name); 1938 td->is_haptic_touchpad = false; 1939 devm_kfree(&hdev->dev, td->haptic); 1940 } 1941 } else { 1942 devm_kfree(&hdev->dev, td->haptic); 1943 } 1944 1945 return 0; 1946 } 1947 1948 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1949 { 1950 struct mt_device *td = hid_get_drvdata(hdev); 1951 1952 /* High latency is desirable for power savings during S3/S0ix */ 1953 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1954 !hid_hw_may_wakeup(hdev)) 1955 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 1956 else 1957 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 1958 1959 return 0; 1960 } 1961 1962 static int mt_reset_resume(struct hid_device *hdev) 1963 { 1964 mt_release_contacts(hdev); 1965 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1966 return 0; 1967 } 1968 1969 static int mt_resume(struct hid_device *hdev) 1970 { 1971 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1972 * It should be safe to send it to other devices too. 1973 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1974 1975 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1976 1977 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1978 1979 return 0; 1980 } 1981 1982 static void mt_remove(struct hid_device *hdev) 1983 { 1984 struct mt_device *td = hid_get_drvdata(hdev); 1985 1986 timer_delete_sync(&td->release_timer); 1987 1988 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1989 hid_hw_stop(hdev); 1990 } 1991 1992 static void mt_on_hid_hw_open(struct hid_device *hdev) 1993 { 1994 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1995 } 1996 1997 static void mt_on_hid_hw_close(struct hid_device *hdev) 1998 { 1999 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2000 } 2001 2002 /* 2003 * This list contains only: 2004 * - VID/PID of products not working with the default multitouch handling 2005 * - 2 generic rules. 2006 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2007 */ 2008 static const struct hid_device_id mt_devices[] = { 2009 2010 /* 3M panels */ 2011 { .driver_data = MT_CLS_3M, 2012 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2013 USB_DEVICE_ID_3M1968) }, 2014 { .driver_data = MT_CLS_3M, 2015 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2016 USB_DEVICE_ID_3M2256) }, 2017 { .driver_data = MT_CLS_3M, 2018 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2019 USB_DEVICE_ID_3M3266) }, 2020 2021 /* Anton devices */ 2022 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2023 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2024 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2025 2026 /* Asus T101HA */ 2027 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2028 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2029 USB_VENDOR_ID_ASUSTEK, 2030 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2031 2032 /* Asus T304UA */ 2033 { .driver_data = MT_CLS_ASUS, 2034 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2035 USB_VENDOR_ID_ASUSTEK, 2036 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2037 2038 /* Atmel panels */ 2039 { .driver_data = MT_CLS_SERIAL, 2040 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2041 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2042 2043 /* Baanto multitouch devices */ 2044 { .driver_data = MT_CLS_NSMU, 2045 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2046 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2047 2048 /* Cando panels */ 2049 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2050 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2051 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2052 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2053 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2054 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2055 2056 /* Chunghwa Telecom touch panels */ 2057 { .driver_data = MT_CLS_NSMU, 2058 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2059 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2060 2061 /* CJTouch panels */ 2062 { .driver_data = MT_CLS_NSMU, 2063 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2064 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2065 { .driver_data = MT_CLS_NSMU, 2066 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2067 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2068 2069 /* CVTouch panels */ 2070 { .driver_data = MT_CLS_NSMU, 2071 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2072 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2073 2074 /* eGalax devices (SAW) */ 2075 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2076 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2077 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2078 2079 /* eGalax devices (resistive) */ 2080 { .driver_data = MT_CLS_EGALAX, 2081 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2082 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2083 { .driver_data = MT_CLS_EGALAX, 2084 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2085 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2086 2087 /* eGalax devices (capacitive) */ 2088 { .driver_data = MT_CLS_EGALAX_SERIAL, 2089 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2090 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2091 { .driver_data = MT_CLS_EGALAX, 2092 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2093 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2094 { .driver_data = MT_CLS_EGALAX_SERIAL, 2095 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2096 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2097 { .driver_data = MT_CLS_EGALAX_SERIAL, 2098 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2099 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2100 { .driver_data = MT_CLS_EGALAX_SERIAL, 2101 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2102 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2103 { .driver_data = MT_CLS_EGALAX_SERIAL, 2104 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2105 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2106 { .driver_data = MT_CLS_EGALAX, 2107 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2108 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2109 { .driver_data = MT_CLS_EGALAX, 2110 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2111 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2112 { .driver_data = MT_CLS_EGALAX_SERIAL, 2113 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2114 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2115 { .driver_data = MT_CLS_EGALAX, 2116 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2117 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2118 { .driver_data = MT_CLS_EGALAX, 2119 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2120 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2121 { .driver_data = MT_CLS_EGALAX, 2122 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2123 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2124 { .driver_data = MT_CLS_EGALAX, 2125 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2126 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2127 { .driver_data = MT_CLS_EGALAX_SERIAL, 2128 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2129 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2130 { .driver_data = MT_CLS_EGALAX_SERIAL, 2131 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2132 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2133 { .driver_data = MT_CLS_EGALAX_SERIAL, 2134 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2135 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2136 { .driver_data = MT_CLS_EGALAX, 2137 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2138 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2139 2140 /* Elan devices */ 2141 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2142 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2143 USB_VENDOR_ID_ELAN, 0x313a) }, 2144 2145 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2146 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2147 USB_VENDOR_ID_ELAN, 0x3148) }, 2148 2149 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2150 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2151 USB_VENDOR_ID_ELAN, 0x32ae) }, 2152 2153 /* Elitegroup panel */ 2154 { .driver_data = MT_CLS_SERIAL, 2155 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2156 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2157 2158 /* Flatfrog Panels */ 2159 { .driver_data = MT_CLS_FLATFROG, 2160 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2161 USB_DEVICE_ID_MULTITOUCH_3200) }, 2162 2163 /* FocalTech Panels */ 2164 { .driver_data = MT_CLS_SERIAL, 2165 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2166 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2167 2168 /* GeneralTouch panel */ 2169 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2170 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2171 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2172 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2173 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2174 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2175 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2176 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2177 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2178 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2179 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2180 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2181 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2182 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2183 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2184 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2185 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2186 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2187 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2188 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2189 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2190 2191 /* Gametel game controller */ 2192 { .driver_data = MT_CLS_NSMU, 2193 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2194 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2195 2196 /* Goodix GT7868Q devices */ 2197 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2198 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2199 I2C_DEVICE_ID_GOODIX_01E8) }, 2200 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2201 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2202 I2C_DEVICE_ID_GOODIX_01E9) }, 2203 2204 /* GoodTouch panels */ 2205 { .driver_data = MT_CLS_NSMU, 2206 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2207 USB_DEVICE_ID_GOODTOUCH_000f) }, 2208 2209 /* Hanvon panels */ 2210 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2211 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2212 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2213 2214 /* HONOR GLO-GXXX panel */ 2215 { .driver_data = MT_CLS_VTL, 2216 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2217 0x347d, 0x7853) }, 2218 2219 /* HONOR MagicBook Art 14 touchpad */ 2220 { .driver_data = MT_CLS_VTL, 2221 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2222 0x35cc, 0x0104) }, 2223 2224 /* Ilitek dual touch panel */ 2225 { .driver_data = MT_CLS_NSMU, 2226 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2227 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2228 2229 /* LG Melfas panel */ 2230 { .driver_data = MT_CLS_LG, 2231 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2232 USB_DEVICE_ID_LG_MELFAS_MT) }, 2233 { .driver_data = MT_CLS_LG, 2234 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2235 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2236 2237 /* Lenovo X1 TAB Gen 1 */ 2238 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2239 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2240 USB_VENDOR_ID_LENOVO, 2241 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2242 2243 /* Lenovo X1 TAB Gen 2 */ 2244 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2245 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2246 USB_VENDOR_ID_LENOVO, 2247 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2248 2249 /* Lenovo X1 TAB Gen 3 */ 2250 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2251 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2252 USB_VENDOR_ID_LENOVO, 2253 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2254 2255 /* Lenovo X12 TAB Gen 1 */ 2256 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2257 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2258 USB_VENDOR_ID_LENOVO, 2259 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2260 2261 /* Lenovo X12 TAB Gen 2 */ 2262 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2263 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2264 USB_VENDOR_ID_LENOVO, 2265 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2266 2267 /* Logitech devices */ 2268 { .driver_data = MT_CLS_NSMU, 2269 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2270 USB_VENDOR_ID_LOGITECH, 2271 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2272 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2273 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2274 USB_VENDOR_ID_LOGITECH, 2275 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2276 2277 /* MosArt panels */ 2278 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2279 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2280 USB_DEVICE_ID_ASUS_T91MT)}, 2281 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2282 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2283 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2284 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2285 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2286 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2287 2288 /* Novatek Panel */ 2289 { .driver_data = MT_CLS_NSMU, 2290 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2291 USB_DEVICE_ID_NOVATEK_PCT) }, 2292 2293 /* Ntrig Panel */ 2294 { .driver_data = MT_CLS_NSMU, 2295 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2296 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2297 2298 /* Panasonic panels */ 2299 { .driver_data = MT_CLS_PANASONIC, 2300 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2301 USB_DEVICE_ID_PANABOARD_UBT780) }, 2302 { .driver_data = MT_CLS_PANASONIC, 2303 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2304 USB_DEVICE_ID_PANABOARD_UBT880) }, 2305 2306 /* PixArt optical touch screen */ 2307 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2308 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2309 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2310 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2311 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2312 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2313 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2314 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2315 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2316 2317 /* PixCir-based panels */ 2318 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2319 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2320 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2321 2322 /* Quanta-based panels */ 2323 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2324 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2325 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2326 2327 /* Razer touchpads */ 2328 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2329 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2330 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2331 2332 /* Smart Tech panels */ 2333 { .driver_data = MT_CLS_SMART_TECH, 2334 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2335 2336 /* Stantum panels */ 2337 { .driver_data = MT_CLS_CONFIDENCE, 2338 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2339 USB_DEVICE_ID_MTP_STM)}, 2340 2341 /* Synaptics devices */ 2342 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2343 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2344 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2345 2346 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2347 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2348 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2349 2350 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2351 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2352 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2353 2354 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2355 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2356 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2357 2358 /* TopSeed panels */ 2359 { .driver_data = MT_CLS_TOPSEED, 2360 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2361 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2362 2363 /* Touch International panels */ 2364 { .driver_data = MT_CLS_NSMU, 2365 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2366 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2367 2368 /* Unitec panels */ 2369 { .driver_data = MT_CLS_NSMU, 2370 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2371 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2372 { .driver_data = MT_CLS_NSMU, 2373 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2374 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2375 2376 /* VTL panels */ 2377 { .driver_data = MT_CLS_VTL, 2378 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2379 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2380 2381 /* Winbond Electronics Corp. */ 2382 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2383 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2384 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2385 2386 /* Wistron panels */ 2387 { .driver_data = MT_CLS_NSMU, 2388 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2389 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2390 2391 /* XAT */ 2392 { .driver_data = MT_CLS_NSMU, 2393 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2394 USB_DEVICE_ID_XAT_CSR) }, 2395 2396 /* Xiroku */ 2397 { .driver_data = MT_CLS_NSMU, 2398 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2399 USB_DEVICE_ID_XIROKU_SPX) }, 2400 { .driver_data = MT_CLS_NSMU, 2401 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2402 USB_DEVICE_ID_XIROKU_MPX) }, 2403 { .driver_data = MT_CLS_NSMU, 2404 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2405 USB_DEVICE_ID_XIROKU_CSR) }, 2406 { .driver_data = MT_CLS_NSMU, 2407 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2408 USB_DEVICE_ID_XIROKU_SPX1) }, 2409 { .driver_data = MT_CLS_NSMU, 2410 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2411 USB_DEVICE_ID_XIROKU_MPX1) }, 2412 { .driver_data = MT_CLS_NSMU, 2413 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2414 USB_DEVICE_ID_XIROKU_CSR1) }, 2415 { .driver_data = MT_CLS_NSMU, 2416 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2417 USB_DEVICE_ID_XIROKU_SPX2) }, 2418 { .driver_data = MT_CLS_NSMU, 2419 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2420 USB_DEVICE_ID_XIROKU_MPX2) }, 2421 { .driver_data = MT_CLS_NSMU, 2422 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2423 USB_DEVICE_ID_XIROKU_CSR2) }, 2424 2425 /* Apple Touch Bar */ 2426 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2427 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2428 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2429 2430 /* Google MT devices */ 2431 { .driver_data = MT_CLS_GOOGLE, 2432 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2433 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2434 { .driver_data = MT_CLS_GOOGLE, 2435 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2436 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2437 2438 /* sis */ 2439 { .driver_data = MT_CLS_SIS, 2440 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2441 HID_ANY_ID) }, 2442 2443 /* Hantick */ 2444 { .driver_data = MT_CLS_NSMU, 2445 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2446 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2447 2448 /* Generic MT device */ 2449 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2450 2451 /* Generic Win 8 certified MT device */ 2452 { .driver_data = MT_CLS_WIN_8, 2453 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2454 HID_ANY_ID, HID_ANY_ID) }, 2455 { } 2456 }; 2457 MODULE_DEVICE_TABLE(hid, mt_devices); 2458 2459 static const struct hid_usage_id mt_grabbed_usages[] = { 2460 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2461 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2462 }; 2463 2464 static struct hid_driver mt_driver = { 2465 .name = "hid-multitouch", 2466 .id_table = mt_devices, 2467 .probe = mt_probe, 2468 .remove = mt_remove, 2469 .input_mapping = mt_input_mapping, 2470 .input_mapped = mt_input_mapped, 2471 .input_configured = mt_input_configured, 2472 .feature_mapping = mt_feature_mapping, 2473 .usage_table = mt_grabbed_usages, 2474 .event = mt_event, 2475 .report_fixup = mt_report_fixup, 2476 .report = mt_report, 2477 .suspend = pm_ptr(mt_suspend), 2478 .reset_resume = pm_ptr(mt_reset_resume), 2479 .resume = pm_ptr(mt_resume), 2480 .on_hid_hw_open = mt_on_hid_hw_open, 2481 .on_hid_hw_close = mt_on_hid_hw_close, 2482 }; 2483 module_hid_driver(mt_driver); 2484