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/bitmap.h> 35 #include <linux/bits.h> 36 #include <linux/device.h> 37 #include <linux/hid.h> 38 #include <linux/module.h> 39 #include <linux/slab.h> 40 #include <linux/input/mt.h> 41 #include <linux/jiffies.h> 42 #include <linux/string.h> 43 #include <linux/timer.h> 44 45 46 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 47 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 48 MODULE_DESCRIPTION("HID multitouch panels"); 49 MODULE_LICENSE("GPL"); 50 51 #include "hid-ids.h" 52 53 #include "hid-haptic.h" 54 55 /* quirks to control the device */ 56 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 57 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 58 #define MT_QUIRK_CYPRESS BIT(2) 59 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 60 #define MT_QUIRK_ALWAYS_VALID BIT(4) 61 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 62 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 63 #define MT_QUIRK_CONFIDENCE BIT(7) 64 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 65 #define MT_QUIRK_NO_AREA BIT(9) 66 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 67 #define MT_QUIRK_HOVERING BIT(11) 68 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 69 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 70 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 71 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 72 #define MT_QUIRK_STICKY_FINGERS BIT(16) 73 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 74 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 75 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 76 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 77 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 78 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 79 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 80 #define MT_QUIRK_YOGABOOK9I BIT(24) 81 #define MT_QUIRK_KEEP_LATENCY_ON_CLOSE BIT(25) 82 #define MT_QUIRK_IGNORE_FEATURE_ID_MISMATCH BIT(26) 83 84 #define MT_INPUTMODE_TOUCHSCREEN 0x02 85 #define MT_INPUTMODE_TOUCHPAD 0x03 86 87 #define MT_BUTTONTYPE_CLICKPAD 0 88 #define MT_BUTTONTYPE_PRESSUREPAD 1 89 90 enum latency_mode { 91 HID_LATENCY_NORMAL = 0, 92 HID_LATENCY_HIGH = 1, 93 }; 94 95 enum report_mode { 96 TOUCHPAD_REPORT_NONE = 0, 97 TOUCHPAD_REPORT_BUTTONS = BIT(0), 98 TOUCHPAD_REPORT_CONTACTS = BIT(1), 99 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 100 }; 101 102 #define MT_IO_FLAGS_RUNNING 0 103 104 static const bool mtrue = true; /* default for true */ 105 static const bool mfalse; /* default for false */ 106 static const __s32 mzero; /* default for 0 */ 107 108 #define DEFAULT_TRUE ((void *)&mtrue) 109 #define DEFAULT_FALSE ((void *)&mfalse) 110 #define DEFAULT_ZERO ((void *)&mzero) 111 112 struct mt_usages { 113 struct list_head list; 114 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 115 __s32 *contactid; /* the device ContactID assigned to this slot */ 116 bool *tip_state; /* is the touch valid? */ 117 bool *inrange_state; /* is the finger in proximity of the sensor? */ 118 bool *confidence_state; /* is the touch made by a finger? */ 119 }; 120 121 struct mt_application { 122 struct list_head list; 123 unsigned int application; 124 unsigned int report_id; 125 struct list_head mt_usages; /* mt usages list */ 126 127 __s32 quirks; 128 129 __s32 *scantime; /* scantime reported */ 130 __s32 scantime_logical_max; /* max value for raw scantime */ 131 132 __s32 *raw_cc; /* contact count in the report */ 133 int left_button_state; /* left button state */ 134 unsigned int mt_flags; /* flags to pass to input-mt */ 135 136 unsigned long *pending_palm_slots; /* slots where we reported palm 137 * and need to release */ 138 139 __u8 num_received; /* how many contacts we received */ 140 __u8 num_expected; /* expected last contact index */ 141 __u8 buttons_count; /* number of physical buttons per touchpad */ 142 __u8 touches_by_report; /* how many touches are present in one report: 143 * 1 means we should use a serial protocol 144 * > 1 means hybrid (multitouch) protocol 145 */ 146 147 unsigned long jiffies; /* the frame's jiffies */ 148 int timestamp; /* the timestamp to be sent */ 149 int prev_scantime; /* scantime reported previously */ 150 151 bool have_contact_count; 152 }; 153 154 struct mt_class { 155 __s32 name; /* MT_CLS */ 156 __s32 quirks; 157 __s32 sn_move; /* Signal/noise ratio for move events */ 158 __s32 sn_width; /* Signal/noise ratio for width events */ 159 __s32 sn_height; /* Signal/noise ratio for height events */ 160 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 161 __u8 maxcontacts; 162 bool is_indirect; /* true for touchpads */ 163 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 164 }; 165 166 struct mt_report_data { 167 struct list_head list; 168 struct hid_report *report; 169 struct mt_application *application; 170 bool is_mt_collection; 171 }; 172 173 struct mt_device { 174 struct mt_class mtclass; /* our mt device class */ 175 struct timer_list release_timer; /* to release sticky fingers */ 176 struct hid_haptic_device *haptic; /* haptic related configuration */ 177 struct hid_device *hdev; /* hid_device we're attached to */ 178 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_RUNNING) */ 179 unsigned long *active_slots; /* bitmap of slots with an active 180 * contact, sized for maxcontacts 181 */ 182 __u8 inputmode_value; /* InputMode HID feature value */ 183 __u8 maxcontacts; 184 bool is_buttonpad; /* is this device a button pad? */ 185 bool is_pressurepad; /* is this device a pressurepad? */ 186 bool is_haptic_touchpad; /* is this device a haptic touchpad? */ 187 bool serial_maybe; /* need to check for serial protocol */ 188 189 struct list_head applications; 190 struct list_head reports; 191 }; 192 193 static void mt_post_parse_default_settings(struct mt_device *td, 194 struct mt_application *app); 195 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 196 197 /* classes of device behavior */ 198 #define MT_CLS_DEFAULT 0x0001 199 200 #define MT_CLS_SERIAL 0x0002 201 #define MT_CLS_CONFIDENCE 0x0003 202 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 203 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 204 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 205 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 206 /* reserved 0x0008 */ 207 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 208 #define MT_CLS_NSMU 0x000a 209 /* reserved 0x0010 */ 210 /* reserved 0x0011 */ 211 #define MT_CLS_WIN_8 0x0012 212 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 213 /* reserved 0x0014 */ 214 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 215 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 216 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 217 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 218 #define MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE 0x0019 219 220 /* vendor specific classes */ 221 #define MT_CLS_3M 0x0101 222 /* reserved 0x0102 */ 223 #define MT_CLS_EGALAX 0x0103 224 #define MT_CLS_EGALAX_SERIAL 0x0104 225 #define MT_CLS_TOPSEED 0x0105 226 #define MT_CLS_PANASONIC 0x0106 227 #define MT_CLS_FLATFROG 0x0107 228 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 229 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 230 #define MT_CLS_LG 0x010a 231 #define MT_CLS_ASUS 0x010b 232 #define MT_CLS_VTL 0x0110 233 #define MT_CLS_GOOGLE 0x0111 234 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 235 #define MT_CLS_SMART_TECH 0x0113 236 #define MT_CLS_APPLE_TOUCHBAR 0x0114 237 #define MT_CLS_YOGABOOK9I 0x0115 238 #define MT_CLS_EGALAX_P80H84 0x0116 239 #define MT_CLS_ASUS_ROG_Z13_FOLIO 0x0117 240 #define MT_CLS_SIS 0x0457 241 242 #define MT_DEFAULT_MAXCONTACT 10 243 #define MT_MAX_MAXCONTACT 250 244 245 /* 246 * Resync device and local timestamps after that many microseconds without 247 * receiving data. 248 */ 249 #define MAX_TIMESTAMP_INTERVAL 1000000 250 251 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 252 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 253 254 /* 255 * these device-dependent functions determine what slot corresponds 256 * to a valid contact that was just read. 257 */ 258 259 static int cypress_compute_slot(struct mt_application *application, 260 struct mt_usages *slot) 261 { 262 if (*slot->contactid != 0 || application->num_received == 0) 263 return *slot->contactid; 264 else 265 return -1; 266 } 267 268 static const struct mt_class mt_classes[] = { 269 { .name = MT_CLS_DEFAULT, 270 .quirks = MT_QUIRK_ALWAYS_VALID | 271 MT_QUIRK_CONTACT_CNT_ACCURATE }, 272 { .name = MT_CLS_NSMU, 273 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 274 { .name = MT_CLS_SERIAL, 275 .quirks = MT_QUIRK_ALWAYS_VALID}, 276 { .name = MT_CLS_CONFIDENCE, 277 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 278 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 279 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 280 MT_QUIRK_SLOT_IS_CONTACTID }, 281 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 282 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 283 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 284 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 285 .quirks = MT_QUIRK_VALID_IS_INRANGE | 286 MT_QUIRK_SLOT_IS_CONTACTID, 287 .maxcontacts = 2 }, 288 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 289 .quirks = MT_QUIRK_VALID_IS_INRANGE | 290 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 291 .maxcontacts = 2 }, 292 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 293 .quirks = MT_QUIRK_VALID_IS_INRANGE | 294 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 295 { .name = MT_CLS_WIN_8, 296 .quirks = MT_QUIRK_ALWAYS_VALID | 297 MT_QUIRK_IGNORE_DUPLICATES | 298 MT_QUIRK_HOVERING | 299 MT_QUIRK_CONTACT_CNT_ACCURATE | 300 MT_QUIRK_STICKY_FINGERS | 301 MT_QUIRK_WIN8_PTP_BUTTONS, 302 .export_all_inputs = true }, 303 { .name = MT_CLS_EXPORT_ALL_INPUTS, 304 .quirks = MT_QUIRK_ALWAYS_VALID | 305 MT_QUIRK_CONTACT_CNT_ACCURATE, 306 .export_all_inputs = true }, 307 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 308 .quirks = MT_QUIRK_ALWAYS_VALID | 309 MT_QUIRK_IGNORE_DUPLICATES | 310 MT_QUIRK_HOVERING | 311 MT_QUIRK_CONTACT_CNT_ACCURATE | 312 MT_QUIRK_STICKY_FINGERS | 313 MT_QUIRK_WIN8_PTP_BUTTONS | 314 MT_QUIRK_FORCE_MULTI_INPUT, 315 .export_all_inputs = true }, 316 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 317 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 318 MT_QUIRK_HOVERING | 319 MT_QUIRK_CONTACT_CNT_ACCURATE | 320 MT_QUIRK_STICKY_FINGERS | 321 MT_QUIRK_WIN8_PTP_BUTTONS | 322 MT_QUIRK_FORCE_MULTI_INPUT | 323 MT_QUIRK_NOT_SEEN_MEANS_UP, 324 .export_all_inputs = true }, 325 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 326 .quirks = MT_QUIRK_ALWAYS_VALID | 327 MT_QUIRK_IGNORE_DUPLICATES | 328 MT_QUIRK_HOVERING | 329 MT_QUIRK_CONTACT_CNT_ACCURATE | 330 MT_QUIRK_STICKY_FINGERS | 331 MT_QUIRK_WIN8_PTP_BUTTONS | 332 MT_QUIRK_DISABLE_WAKEUP, 333 .export_all_inputs = true }, 334 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 335 .quirks = MT_QUIRK_ALWAYS_VALID | 336 MT_QUIRK_IGNORE_DUPLICATES | 337 MT_QUIRK_HOVERING | 338 MT_QUIRK_CONTACT_CNT_ACCURATE | 339 MT_QUIRK_WIN8_PTP_BUTTONS, 340 .export_all_inputs = true }, 341 { .name = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 342 .quirks = MT_QUIRK_ALWAYS_VALID | 343 MT_QUIRK_IGNORE_DUPLICATES | 344 MT_QUIRK_HOVERING | 345 MT_QUIRK_CONTACT_CNT_ACCURATE | 346 MT_QUIRK_STICKY_FINGERS | 347 MT_QUIRK_WIN8_PTP_BUTTONS | 348 MT_QUIRK_KEEP_LATENCY_ON_CLOSE, 349 .export_all_inputs = true }, 350 351 /* 352 * vendor specific classes 353 */ 354 { .name = MT_CLS_3M, 355 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 356 MT_QUIRK_SLOT_IS_CONTACTID | 357 MT_QUIRK_TOUCH_SIZE_SCALING, 358 .sn_move = 2048, 359 .sn_width = 128, 360 .sn_height = 128, 361 .maxcontacts = 60, 362 }, 363 { .name = MT_CLS_EGALAX, 364 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 365 MT_QUIRK_VALID_IS_INRANGE, 366 .sn_move = 4096, 367 .sn_pressure = 32, 368 }, 369 { .name = MT_CLS_EGALAX_SERIAL, 370 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 371 MT_QUIRK_ALWAYS_VALID, 372 .sn_move = 4096, 373 .sn_pressure = 32, 374 }, 375 { .name = MT_CLS_TOPSEED, 376 .quirks = MT_QUIRK_ALWAYS_VALID, 377 .is_indirect = true, 378 .maxcontacts = 2, 379 }, 380 { .name = MT_CLS_PANASONIC, 381 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 382 .maxcontacts = 4 }, 383 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 384 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 385 MT_QUIRK_VALID_IS_INRANGE | 386 MT_QUIRK_SLOT_IS_CONTACTID, 387 .maxcontacts = 2 388 }, 389 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 390 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 391 MT_QUIRK_SLOT_IS_CONTACTID 392 }, 393 394 { .name = MT_CLS_FLATFROG, 395 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 396 MT_QUIRK_NO_AREA, 397 .sn_move = 2048, 398 .maxcontacts = 40, 399 }, 400 { .name = MT_CLS_LG, 401 .quirks = MT_QUIRK_ALWAYS_VALID | 402 MT_QUIRK_FIX_CONST_CONTACT_ID | 403 MT_QUIRK_IGNORE_DUPLICATES | 404 MT_QUIRK_HOVERING | 405 MT_QUIRK_CONTACT_CNT_ACCURATE }, 406 { .name = MT_CLS_ASUS, 407 .quirks = MT_QUIRK_ALWAYS_VALID | 408 MT_QUIRK_CONTACT_CNT_ACCURATE | 409 MT_QUIRK_ASUS_CUSTOM_UP }, 410 { .name = MT_CLS_ASUS_ROG_Z13_FOLIO, 411 .quirks = MT_QUIRK_ALWAYS_VALID | 412 MT_QUIRK_IGNORE_DUPLICATES | 413 MT_QUIRK_HOVERING | 414 MT_QUIRK_CONTACT_CNT_ACCURATE | 415 MT_QUIRK_STICKY_FINGERS | 416 MT_QUIRK_WIN8_PTP_BUTTONS | 417 MT_QUIRK_CONFIDENCE | 418 MT_QUIRK_IGNORE_FEATURE_ID_MISMATCH, 419 .export_all_inputs = true }, 420 { .name = MT_CLS_VTL, 421 .quirks = MT_QUIRK_ALWAYS_VALID | 422 MT_QUIRK_CONTACT_CNT_ACCURATE | 423 MT_QUIRK_STICKY_FINGERS | 424 MT_QUIRK_FORCE_GET_FEATURE, 425 }, 426 { .name = MT_CLS_GOOGLE, 427 .quirks = MT_QUIRK_ALWAYS_VALID | 428 MT_QUIRK_CONTACT_CNT_ACCURATE | 429 MT_QUIRK_SLOT_IS_CONTACTID | 430 MT_QUIRK_HOVERING 431 }, 432 { .name = MT_CLS_RAZER_BLADE_STEALTH, 433 .quirks = MT_QUIRK_ALWAYS_VALID | 434 MT_QUIRK_IGNORE_DUPLICATES | 435 MT_QUIRK_HOVERING | 436 MT_QUIRK_CONTACT_CNT_ACCURATE | 437 MT_QUIRK_WIN8_PTP_BUTTONS, 438 }, 439 { .name = MT_CLS_SMART_TECH, 440 .quirks = MT_QUIRK_ALWAYS_VALID | 441 MT_QUIRK_IGNORE_DUPLICATES | 442 MT_QUIRK_CONTACT_CNT_ACCURATE | 443 MT_QUIRK_SEPARATE_APP_REPORT, 444 }, 445 { .name = MT_CLS_APPLE_TOUCHBAR, 446 .quirks = MT_QUIRK_HOVERING | 447 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 448 MT_QUIRK_APPLE_TOUCHBAR, 449 .maxcontacts = 11, 450 }, 451 { .name = MT_CLS_SIS, 452 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 453 MT_QUIRK_ALWAYS_VALID | 454 MT_QUIRK_CONTACT_CNT_ACCURATE, 455 }, 456 { .name = MT_CLS_YOGABOOK9I, 457 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 458 MT_QUIRK_ALWAYS_VALID | 459 MT_QUIRK_CONTACT_CNT_ACCURATE | 460 MT_QUIRK_FORCE_MULTI_INPUT | 461 MT_QUIRK_SEPARATE_APP_REPORT | 462 MT_QUIRK_HOVERING | 463 MT_QUIRK_YOGABOOK9I, 464 .maxcontacts = 10, 465 .export_all_inputs = true 466 }, 467 { .name = MT_CLS_EGALAX_P80H84, 468 .quirks = MT_QUIRK_ALWAYS_VALID | 469 MT_QUIRK_IGNORE_DUPLICATES | 470 MT_QUIRK_CONTACT_CNT_ACCURATE, 471 }, 472 { } 473 }; 474 475 static ssize_t mt_show_quirks(struct device *dev, 476 struct device_attribute *attr, 477 char *buf) 478 { 479 struct hid_device *hdev = to_hid_device(dev); 480 struct mt_device *td = hid_get_drvdata(hdev); 481 482 return sprintf(buf, "%u\n", td->mtclass.quirks); 483 } 484 485 static ssize_t mt_set_quirks(struct device *dev, 486 struct device_attribute *attr, 487 const char *buf, size_t count) 488 { 489 struct hid_device *hdev = to_hid_device(dev); 490 struct mt_device *td = hid_get_drvdata(hdev); 491 struct mt_application *application; 492 493 unsigned long val; 494 495 if (kstrtoul(buf, 0, &val)) 496 return -EINVAL; 497 498 td->mtclass.quirks = val; 499 500 list_for_each_entry(application, &td->applications, list) { 501 application->quirks = val; 502 if (!application->have_contact_count) 503 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 504 } 505 506 return count; 507 } 508 509 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 510 511 static struct attribute *sysfs_attrs[] = { 512 &dev_attr_quirks.attr, 513 NULL 514 }; 515 516 static const struct attribute_group mt_attribute_group = { 517 .attrs = sysfs_attrs 518 }; 519 520 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 521 { 522 struct mt_device *td = hid_get_drvdata(hdev); 523 int ret; 524 u32 size = hid_report_len(report); 525 u8 *buf; 526 527 /* 528 * Do not fetch the feature report if the device has been explicitly 529 * marked as non-capable. 530 */ 531 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 532 return; 533 534 buf = hid_alloc_report_buf(report, GFP_KERNEL); 535 if (!buf) 536 return; 537 538 ret = hid_hw_raw_request(hdev, report->id, buf, size, 539 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 540 if (ret < 0) { 541 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 542 report->id); 543 } else { 544 /* 545 * The report ID in the request and the response should match. 546 * Some firmware (e.g. the ASUS ROG Z13 Folio 547 * touchpad) returns a mismatched ID on this specific fetch; 548 * tolerate it only for devices explicitly flagged as such. 549 */ 550 if (report->id != buf[0] && 551 !(td->mtclass.quirks & MT_QUIRK_IGNORE_FEATURE_ID_MISMATCH)) { 552 hid_err(hdev, "Returned feature report did not match the request\n"); 553 goto free; 554 } 555 556 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 557 size, size, 0); 558 if (ret) 559 dev_warn(&hdev->dev, "failed to report feature\n"); 560 } 561 562 free: 563 kfree(buf); 564 } 565 566 static void mt_feature_mapping(struct hid_device *hdev, 567 struct hid_field *field, struct hid_usage *usage) 568 { 569 struct mt_device *td = hid_get_drvdata(hdev); 570 571 switch (usage->hid) { 572 case HID_DG_CONTACTMAX: 573 mt_get_feature(hdev, field->report); 574 575 td->maxcontacts = field->value[0]; 576 if (!td->maxcontacts && 577 field->logical_maximum <= MT_MAX_MAXCONTACT) 578 td->maxcontacts = field->logical_maximum; 579 if (td->mtclass.maxcontacts) 580 /* check if the maxcontacts is given by the class */ 581 td->maxcontacts = td->mtclass.maxcontacts; 582 583 break; 584 case HID_DG_BUTTONTYPE: 585 if (usage->usage_index >= field->report_count) { 586 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 587 break; 588 } 589 590 mt_get_feature(hdev, field->report); 591 switch (field->value[usage->usage_index]) { 592 case MT_BUTTONTYPE_CLICKPAD: 593 td->is_buttonpad = true; 594 break; 595 case MT_BUTTONTYPE_PRESSUREPAD: 596 td->is_pressurepad = true; 597 break; 598 } 599 600 break; 601 case 0xff0000c5: 602 /* Retrieve the Win8 blob once to enable some devices */ 603 if (usage->usage_index == 0) 604 mt_get_feature(hdev, field->report); 605 break; 606 } 607 608 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 609 } 610 611 static void set_abs(struct input_dev *input, unsigned int code, 612 struct hid_field *field, int snratio) 613 { 614 int fmin = field->logical_minimum; 615 int fmax = field->logical_maximum; 616 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 617 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 618 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 619 } 620 621 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 622 struct mt_application *application) 623 { 624 struct mt_usages *usage; 625 626 usage = devm_kzalloc_obj(&hdev->dev, *usage); 627 if (!usage) 628 return NULL; 629 630 /* set some defaults so we do not need to check for null pointers */ 631 usage->x = DEFAULT_ZERO; 632 usage->y = DEFAULT_ZERO; 633 usage->cx = DEFAULT_ZERO; 634 usage->cy = DEFAULT_ZERO; 635 usage->p = DEFAULT_ZERO; 636 usage->w = DEFAULT_ZERO; 637 usage->h = DEFAULT_ZERO; 638 usage->a = DEFAULT_ZERO; 639 usage->contactid = DEFAULT_ZERO; 640 usage->tip_state = DEFAULT_FALSE; 641 usage->inrange_state = DEFAULT_FALSE; 642 usage->confidence_state = DEFAULT_TRUE; 643 644 list_add_tail(&usage->list, &application->mt_usages); 645 646 return usage; 647 } 648 649 static struct mt_application *mt_allocate_application(struct mt_device *td, 650 struct hid_report *report) 651 { 652 unsigned int application = report->application; 653 struct mt_application *mt_application; 654 655 mt_application = devm_kzalloc_obj(&td->hdev->dev, *mt_application); 656 if (!mt_application) 657 return NULL; 658 659 mt_application->application = application; 660 INIT_LIST_HEAD(&mt_application->mt_usages); 661 662 if (application == HID_DG_TOUCHSCREEN) 663 mt_application->mt_flags |= INPUT_MT_DIRECT; 664 665 /* 666 * Model touchscreens providing buttons as touchpads. 667 */ 668 if (application == HID_DG_TOUCHPAD) { 669 mt_application->mt_flags |= INPUT_MT_POINTER; 670 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 671 } 672 673 mt_application->scantime = DEFAULT_ZERO; 674 mt_application->raw_cc = DEFAULT_ZERO; 675 mt_application->quirks = td->mtclass.quirks; 676 mt_application->report_id = report->id; 677 678 list_add_tail(&mt_application->list, &td->applications); 679 680 return mt_application; 681 } 682 683 static struct mt_application *mt_find_application(struct mt_device *td, 684 struct hid_report *report) 685 { 686 unsigned int application = report->application; 687 struct mt_application *tmp, *mt_application = NULL; 688 689 list_for_each_entry(tmp, &td->applications, list) { 690 if (application == tmp->application) { 691 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 692 tmp->report_id == report->id) { 693 mt_application = tmp; 694 break; 695 } 696 } 697 } 698 699 if (!mt_application) 700 mt_application = mt_allocate_application(td, report); 701 702 return mt_application; 703 } 704 705 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 706 struct hid_report *report) 707 { 708 struct mt_class *cls = &td->mtclass; 709 struct mt_report_data *rdata; 710 struct hid_field *field; 711 int r, n; 712 713 rdata = devm_kzalloc_obj(&td->hdev->dev, *rdata); 714 if (!rdata) 715 return NULL; 716 717 rdata->report = report; 718 rdata->application = mt_find_application(td, report); 719 720 if (!rdata->application) { 721 devm_kfree(&td->hdev->dev, rdata); 722 return NULL; 723 } 724 725 for (r = 0; r < report->maxfield; r++) { 726 field = report->field[r]; 727 728 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 729 continue; 730 731 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 732 for (n = 0; n < field->report_count; n++) { 733 unsigned int hid = field->usage[n].hid; 734 735 if (hid == HID_DG_CONTACTID || 736 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 737 hid == HID_DG_TRANSDUCER_INDEX)) { 738 rdata->is_mt_collection = true; 739 break; 740 } 741 } 742 } 743 } 744 745 list_add_tail(&rdata->list, &td->reports); 746 747 return rdata; 748 } 749 750 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 751 struct hid_report *report) 752 { 753 struct mt_report_data *tmp, *rdata = NULL; 754 755 list_for_each_entry(tmp, &td->reports, list) { 756 if (report == tmp->report) { 757 rdata = tmp; 758 break; 759 } 760 } 761 762 if (!rdata) 763 rdata = mt_allocate_report_data(td, report); 764 765 return rdata; 766 } 767 768 static void mt_store_field(struct hid_device *hdev, 769 struct mt_application *application, 770 __s32 *value, 771 size_t offset) 772 { 773 struct mt_usages *usage; 774 __s32 **target; 775 776 if (list_empty(&application->mt_usages)) 777 usage = mt_allocate_usage(hdev, application); 778 else 779 usage = list_last_entry(&application->mt_usages, 780 struct mt_usages, 781 list); 782 783 if (!usage) 784 return; 785 786 target = (__s32 **)((char *)usage + offset); 787 788 /* the value has already been filled, create a new slot */ 789 if (*target != DEFAULT_TRUE && 790 *target != DEFAULT_FALSE && 791 *target != DEFAULT_ZERO) { 792 if (usage->contactid == DEFAULT_ZERO || 793 usage->x == DEFAULT_ZERO || 794 usage->y == DEFAULT_ZERO) { 795 hid_dbg(hdev, 796 "ignoring duplicate usage on incomplete"); 797 return; 798 } 799 usage = mt_allocate_usage(hdev, application); 800 if (!usage) 801 return; 802 803 target = (__s32 **)((char *)usage + offset); 804 } 805 806 *target = value; 807 } 808 809 #define MT_STORE_FIELD(__name) \ 810 mt_store_field(hdev, app, \ 811 &field->value[usage->usage_index], \ 812 offsetof(struct mt_usages, __name)) 813 814 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 815 struct hid_field *field, struct hid_usage *usage, 816 unsigned long **bit, int *max, struct mt_application *app) 817 { 818 struct mt_device *td = hid_get_drvdata(hdev); 819 struct mt_class *cls = &td->mtclass; 820 int code; 821 struct hid_usage *prev_usage = NULL; 822 823 /* 824 * Model touchscreens providing buttons as touchpads. 825 */ 826 if (field->application == HID_DG_TOUCHSCREEN && 827 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 828 app->mt_flags |= INPUT_MT_POINTER; 829 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 830 } 831 832 /* count the buttons on touchpads */ 833 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 834 app->buttons_count++; 835 836 if (usage->usage_index) 837 prev_usage = &field->usage[usage->usage_index - 1]; 838 839 switch (usage->hid & HID_USAGE_PAGE) { 840 841 case HID_UP_GENDESK: 842 switch (usage->hid) { 843 case HID_GD_X: 844 if (prev_usage && (prev_usage->hid == usage->hid)) { 845 code = ABS_MT_TOOL_X; 846 MT_STORE_FIELD(cx); 847 } else { 848 code = ABS_MT_POSITION_X; 849 MT_STORE_FIELD(x); 850 } 851 852 set_abs(hi->input, code, field, cls->sn_move); 853 854 /* 855 * A system multi-axis that exports X and Y has a high 856 * chance of being used directly on a surface 857 */ 858 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 859 __set_bit(INPUT_PROP_DIRECT, 860 hi->input->propbit); 861 input_set_abs_params(hi->input, 862 ABS_MT_TOOL_TYPE, 863 MT_TOOL_DIAL, 864 MT_TOOL_DIAL, 0, 0); 865 } 866 867 return 1; 868 case HID_GD_Y: 869 if (prev_usage && (prev_usage->hid == usage->hid)) { 870 code = ABS_MT_TOOL_Y; 871 MT_STORE_FIELD(cy); 872 } else { 873 code = ABS_MT_POSITION_Y; 874 MT_STORE_FIELD(y); 875 } 876 877 set_abs(hi->input, code, field, cls->sn_move); 878 879 return 1; 880 } 881 return 0; 882 883 case HID_UP_DIGITIZER: 884 switch (usage->hid) { 885 case HID_DG_INRANGE: 886 if (app->quirks & MT_QUIRK_HOVERING) { 887 input_set_abs_params(hi->input, 888 ABS_MT_DISTANCE, 0, 1, 0, 0); 889 } 890 MT_STORE_FIELD(inrange_state); 891 return 1; 892 case HID_DG_CONFIDENCE: 893 if ((cls->name == MT_CLS_WIN_8 || 894 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 895 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 896 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP || 897 cls->name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE) && 898 (field->application == HID_DG_TOUCHPAD || 899 field->application == HID_DG_TOUCHSCREEN)) 900 app->quirks |= MT_QUIRK_CONFIDENCE; 901 902 if (app->quirks & MT_QUIRK_CONFIDENCE) 903 input_set_abs_params(hi->input, 904 ABS_MT_TOOL_TYPE, 905 MT_TOOL_FINGER, 906 MT_TOOL_PALM, 0, 0); 907 908 MT_STORE_FIELD(confidence_state); 909 return 1; 910 case HID_DG_TOUCH: 911 /* 912 * Legacy devices use TIPSWITCH and not TOUCH. 913 * One special case here is of the Apple Touch Bars. 914 * In these devices, the tip state is contained in 915 * fields with the HID_DG_TOUCH usage. 916 * Let's just ignore this field for other devices. 917 */ 918 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 919 return -1; 920 fallthrough; 921 case HID_DG_TIPSWITCH: 922 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 923 input_set_capability(hi->input, 924 EV_KEY, BTN_TOUCH); 925 MT_STORE_FIELD(tip_state); 926 return 1; 927 case HID_DG_TRANSDUCER_INDEX: 928 /* 929 * Contact ID in case of Apple Touch Bars is contained 930 * in fields with HID_DG_TRANSDUCER_INDEX usage. 931 */ 932 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 933 return 0; 934 fallthrough; 935 case HID_DG_CONTACTID: 936 MT_STORE_FIELD(contactid); 937 app->touches_by_report++; 938 return 1; 939 case HID_DG_WIDTH: 940 if (!(app->quirks & MT_QUIRK_NO_AREA)) 941 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 942 cls->sn_width); 943 MT_STORE_FIELD(w); 944 return 1; 945 case HID_DG_HEIGHT: 946 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 947 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 948 cls->sn_height); 949 950 /* 951 * Only set ABS_MT_ORIENTATION if it is not 952 * already set by the HID_DG_AZIMUTH usage. 953 */ 954 if (!test_bit(ABS_MT_ORIENTATION, 955 hi->input->absbit)) 956 input_set_abs_params(hi->input, 957 ABS_MT_ORIENTATION, 0, 1, 0, 0); 958 } 959 MT_STORE_FIELD(h); 960 return 1; 961 case HID_DG_TIPPRESSURE: 962 set_abs(hi->input, ABS_MT_PRESSURE, field, 963 cls->sn_pressure); 964 td->is_haptic_touchpad = 965 hid_haptic_check_pressure_unit(td->haptic, 966 hi, field); 967 MT_STORE_FIELD(p); 968 return 1; 969 case HID_DG_SCANTIME: 970 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 971 app->scantime = &field->value[usage->usage_index]; 972 app->scantime_logical_max = field->logical_maximum; 973 return 1; 974 case HID_DG_CONTACTCOUNT: 975 app->have_contact_count = true; 976 app->raw_cc = &field->value[usage->usage_index]; 977 return 1; 978 case HID_DG_AZIMUTH: 979 /* 980 * Azimuth has the range of [0, MAX) representing a full 981 * revolution. Set ABS_MT_ORIENTATION to a quarter of 982 * MAX according the definition of ABS_MT_ORIENTATION 983 */ 984 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 985 -field->logical_maximum / 4, 986 field->logical_maximum / 4, 987 cls->sn_move ? 988 field->logical_maximum / cls->sn_move : 0, 0); 989 MT_STORE_FIELD(a); 990 return 1; 991 case HID_DG_CONTACTMAX: 992 /* contact max are global to the report */ 993 return -1; 994 } 995 /* let hid-input decide for the others */ 996 return 0; 997 998 case HID_UP_BUTTON: 999 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 1000 /* 1001 * MS PTP spec says that external buttons left and right have 1002 * usages 2 and 3. 1003 */ 1004 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1005 field->application == HID_DG_TOUCHPAD && 1006 (usage->hid & HID_USAGE) > 1) 1007 code--; 1008 1009 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 1010 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 1011 1012 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 1013 if (!*bit) 1014 return -1; 1015 input_set_capability(hi->input, EV_KEY, code); 1016 return 1; 1017 1018 case 0xff000000: 1019 /* we do not want to map these: no input-oriented meaning */ 1020 return -1; 1021 } 1022 1023 return 0; 1024 } 1025 1026 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 1027 struct mt_usages *slot, 1028 struct input_dev *input) 1029 { 1030 __s32 quirks = app->quirks; 1031 1032 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 1033 return *slot->contactid; 1034 1035 if (quirks & MT_QUIRK_CYPRESS) 1036 return cypress_compute_slot(app, slot); 1037 1038 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 1039 return app->num_received; 1040 1041 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 1042 return *slot->contactid - 1; 1043 1044 return input_mt_get_slot_by_key(input, *slot->contactid); 1045 } 1046 1047 static void mt_release_pending_palms(struct mt_device *td, 1048 struct mt_application *app, 1049 struct input_dev *input) 1050 { 1051 int slotnum; 1052 bool need_sync = false; 1053 1054 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 1055 clear_bit(slotnum, app->pending_palm_slots); 1056 clear_bit(slotnum, td->active_slots); 1057 1058 input_mt_slot(input, slotnum); 1059 input_mt_report_slot_inactive(input); 1060 1061 need_sync = true; 1062 } 1063 1064 if (need_sync) { 1065 input_mt_sync_frame(input); 1066 input_sync(input); 1067 } 1068 } 1069 1070 /* 1071 * this function is called when a whole packet has been received and processed, 1072 * so that it can decide what to send to the input layer. 1073 */ 1074 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1075 struct input_dev *input) 1076 { 1077 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1078 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1079 1080 input_mt_sync_frame(input); 1081 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1082 input_sync(input); 1083 1084 mt_release_pending_palms(td, app, input); 1085 1086 app->num_received = 0; 1087 app->left_button_state = 0; 1088 if (td->is_haptic_touchpad) 1089 hid_haptic_pressure_reset(td->haptic); 1090 } 1091 1092 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1093 { 1094 long delta = value - app->prev_scantime; 1095 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1096 1097 app->jiffies = jiffies; 1098 1099 if (delta < 0) 1100 delta += app->scantime_logical_max; 1101 1102 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1103 delta *= 100; 1104 1105 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1106 /* No data received for a while, resync the timestamp. */ 1107 return 0; 1108 else 1109 return app->timestamp + delta; 1110 } 1111 1112 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1113 struct hid_usage *usage, __s32 value) 1114 { 1115 /* we will handle the hidinput part later, now remains hiddev */ 1116 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1117 hid->hiddev_hid_event(hid, field, usage, value); 1118 1119 return 1; 1120 } 1121 1122 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1123 struct mt_application *app, 1124 struct mt_usages *slot) 1125 { 1126 struct input_mt *mt = input->mt; 1127 struct hid_device *hdev = td->hdev; 1128 __s32 quirks = app->quirks; 1129 bool valid = true; 1130 bool confidence_state = true; 1131 bool inrange_state = false; 1132 int active; 1133 int slotnum; 1134 int tool = MT_TOOL_FINGER; 1135 1136 if (!slot) 1137 return -EINVAL; 1138 1139 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1140 app->num_received >= app->num_expected) 1141 return -EAGAIN; 1142 1143 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1144 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1145 valid = *slot->inrange_state; 1146 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1147 valid = *slot->tip_state; 1148 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1149 valid = *slot->confidence_state; 1150 1151 if (!valid) 1152 return 0; 1153 } 1154 1155 slotnum = mt_compute_slot(td, app, slot, input); 1156 if (slotnum < 0 || slotnum >= td->maxcontacts) 1157 return 0; 1158 1159 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1160 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1161 1162 if (input_mt_is_active(i_slot) && 1163 input_mt_is_used(mt, i_slot)) 1164 return -EAGAIN; 1165 } 1166 1167 if (quirks & MT_QUIRK_CONFIDENCE) 1168 confidence_state = *slot->confidence_state; 1169 1170 if (quirks & MT_QUIRK_HOVERING) 1171 inrange_state = *slot->inrange_state; 1172 1173 active = *slot->tip_state || inrange_state; 1174 1175 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1176 tool = MT_TOOL_DIAL; 1177 else if (unlikely(!confidence_state)) { 1178 tool = MT_TOOL_PALM; 1179 if (!active && mt && 1180 input_mt_is_active(&mt->slots[slotnum])) { 1181 /* 1182 * The non-confidence was reported for 1183 * previously valid contact that is also no 1184 * longer valid. We can't simply report 1185 * lift-off as userspace will not be aware 1186 * of non-confidence, so we need to split 1187 * it into 2 events: active MT_TOOL_PALM 1188 * and a separate liftoff. 1189 */ 1190 active = true; 1191 set_bit(slotnum, app->pending_palm_slots); 1192 } 1193 } 1194 1195 input_mt_slot(input, slotnum); 1196 input_mt_report_slot_state(input, tool, active); 1197 if (active) { 1198 /* this finger is in proximity of the sensor */ 1199 int wide = (*slot->w > *slot->h); 1200 int major = max(*slot->w, *slot->h); 1201 int minor = min(*slot->w, *slot->h); 1202 int orientation = wide; 1203 int max_azimuth; 1204 int azimuth; 1205 int x; 1206 int y; 1207 int cx; 1208 int cy; 1209 1210 if (slot->a != DEFAULT_ZERO) { 1211 /* 1212 * Azimuth is counter-clockwise and ranges from [0, MAX) 1213 * (a full revolution). Convert it to clockwise ranging 1214 * [-MAX/2, MAX/2]. 1215 * 1216 * Note that ABS_MT_ORIENTATION require us to report 1217 * the limit of [-MAX/4, MAX/4], but the value can go 1218 * out of range to [-MAX/2, MAX/2] to report an upside 1219 * down ellipsis. 1220 */ 1221 azimuth = *slot->a; 1222 max_azimuth = input_abs_get_max(input, 1223 ABS_MT_ORIENTATION); 1224 if (azimuth > max_azimuth * 2) 1225 azimuth -= max_azimuth * 4; 1226 orientation = -azimuth; 1227 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1228 orientation = -orientation; 1229 1230 } 1231 1232 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1233 /* 1234 * divided by two to match visual scale of touch 1235 * for devices with this quirk 1236 */ 1237 major = major >> 1; 1238 minor = minor >> 1; 1239 } 1240 1241 if (td->is_haptic_touchpad) 1242 hid_haptic_pressure_increase(td->haptic, *slot->p); 1243 1244 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1245 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1246 *slot->x; 1247 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1248 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1249 *slot->y; 1250 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1251 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1252 *slot->cx; 1253 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1254 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1255 *slot->cy; 1256 1257 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1258 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1259 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1260 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1261 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1262 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1263 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1264 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1265 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1266 1267 set_bit(slotnum, td->active_slots); 1268 } else { 1269 clear_bit(slotnum, td->active_slots); 1270 } 1271 1272 return 0; 1273 } 1274 1275 static void mt_process_mt_event(struct hid_device *hid, 1276 struct mt_application *app, 1277 struct hid_field *field, 1278 struct hid_usage *usage, 1279 __s32 value, 1280 bool first_packet) 1281 { 1282 __s32 quirks = app->quirks; 1283 struct input_dev *input = field->hidinput->input; 1284 1285 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1286 return; 1287 1288 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1289 1290 /* 1291 * For Win8 PTP touchpads we should only look at 1292 * non finger/touch events in the first_packet of a 1293 * (possible) multi-packet frame. 1294 */ 1295 if (!first_packet) 1296 return; 1297 1298 /* 1299 * For Win8 PTP touchpads we map both the clickpad click 1300 * and any "external" left buttons to BTN_LEFT if a 1301 * device claims to have both we need to report 1 for 1302 * BTN_LEFT if either is pressed, so we or all values 1303 * together and report the result in mt_sync_frame(). 1304 */ 1305 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1306 app->left_button_state |= value; 1307 return; 1308 } 1309 } 1310 1311 input_event(input, usage->type, usage->code, value); 1312 } 1313 1314 static void mt_touch_report(struct hid_device *hid, 1315 struct mt_report_data *rdata) 1316 { 1317 struct mt_device *td = hid_get_drvdata(hid); 1318 struct hid_report *report = rdata->report; 1319 struct mt_application *app = rdata->application; 1320 struct hid_field *field; 1321 struct input_dev *input; 1322 struct mt_usages *slot; 1323 bool first_packet; 1324 unsigned count; 1325 int r, n; 1326 int scantime = 0; 1327 int contact_count = -1; 1328 1329 /* sticky fingers release in progress, abort */ 1330 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1331 return; 1332 1333 scantime = *app->scantime; 1334 app->timestamp = mt_compute_timestamp(app, scantime); 1335 if (app->raw_cc != DEFAULT_ZERO) 1336 contact_count = *app->raw_cc; 1337 1338 /* 1339 * Includes multi-packet support where subsequent 1340 * packets are sent with zero contactcount. 1341 */ 1342 if (contact_count > 0) 1343 app->num_expected = contact_count; 1344 else if (app->num_received == 0 && app->prev_scantime != scantime) { 1345 /* 1346 * New multi-report frame: 1347 * 1348 * For Win8 PTPs the first packet (td->num_received == 0) may 1349 * have a contactcount of 0 if there only is a button event. 1350 * 1351 * Some other devices use a sentinel frame with 0 to release all contacts 1352 */ 1353 app->num_expected = 0; 1354 } 1355 app->prev_scantime = scantime; 1356 1357 first_packet = app->num_received == 0; 1358 1359 input = report->field[0]->hidinput->input; 1360 1361 list_for_each_entry(slot, &app->mt_usages, list) { 1362 if (!mt_process_slot(td, input, app, slot)) 1363 app->num_received++; 1364 } 1365 1366 for (r = 0; r < report->maxfield; r++) { 1367 field = report->field[r]; 1368 count = field->report_count; 1369 1370 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1371 continue; 1372 1373 for (n = 0; n < count; n++) 1374 mt_process_mt_event(hid, app, field, 1375 &field->usage[n], field->value[n], 1376 first_packet); 1377 } 1378 1379 if (app->num_received >= app->num_expected) 1380 mt_sync_frame(td, app, input); 1381 1382 /* 1383 * Windows 8 specs says 2 things: 1384 * - once a contact has been reported, it has to be reported in each 1385 * subsequent report 1386 * - the report rate when fingers are present has to be at least 1387 * the refresh rate of the screen, 60 or 120 Hz 1388 * 1389 * I interprete this that the specification forces a report rate of 1390 * at least 60 Hz for a touchscreen to be certified. 1391 * Which means that if we do not get a report whithin 16 ms, either 1392 * something wrong happens, either the touchscreen forgets to send 1393 * a release. Taking a reasonable margin allows to remove issues 1394 * with USB communication or the load of the machine. 1395 * 1396 * Given that Win 8 devices are forced to send a release, this will 1397 * only affect laggish machines and the ones that have a firmware 1398 * defect. 1399 */ 1400 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1401 if (!bitmap_empty(td->active_slots, td->maxcontacts)) 1402 mod_timer(&td->release_timer, 1403 jiffies + msecs_to_jiffies(100)); 1404 else 1405 timer_delete(&td->release_timer); 1406 } 1407 1408 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1409 } 1410 1411 static int mt_touch_input_configured(struct hid_device *hdev, 1412 struct hid_input *hi, 1413 struct mt_application *app) 1414 { 1415 struct mt_device *td = hid_get_drvdata(hdev); 1416 struct mt_class *cls = &td->mtclass; 1417 struct input_dev *input = hi->input; 1418 int ret; 1419 1420 /* 1421 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1422 * but the maximum contact count is greater than the default. 1423 */ 1424 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1425 td->maxcontacts = cls->maxcontacts; 1426 1427 if (!td->maxcontacts) 1428 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1429 1430 mt_post_parse(td, app); 1431 if (td->serial_maybe) 1432 mt_post_parse_default_settings(td, app); 1433 1434 /* 1435 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1436 * but these devices are direct. 1437 */ 1438 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1439 app->mt_flags |= INPUT_MT_DIRECT; 1440 1441 if (cls->is_indirect) 1442 app->mt_flags |= INPUT_MT_POINTER; 1443 1444 if (td->is_haptic_touchpad) 1445 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1446 1447 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1448 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1449 1450 /* check for clickpads */ 1451 if ((app->mt_flags & INPUT_MT_POINTER) && 1452 (app->buttons_count == 1)) 1453 td->is_buttonpad = true; 1454 1455 if (td->is_buttonpad) 1456 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1457 if (td->is_pressurepad) 1458 __set_bit(INPUT_PROP_PRESSUREPAD, input->propbit); 1459 1460 if (!td->active_slots) { 1461 td->active_slots = devm_kcalloc(&td->hdev->dev, 1462 BITS_TO_LONGS(td->maxcontacts), 1463 sizeof(long), 1464 GFP_KERNEL); 1465 if (!td->active_slots) 1466 return -ENOMEM; 1467 } 1468 1469 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1470 BITS_TO_LONGS(td->maxcontacts), 1471 sizeof(long), 1472 GFP_KERNEL); 1473 if (!app->pending_palm_slots) 1474 return -ENOMEM; 1475 1476 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1477 if (ret) 1478 return ret; 1479 1480 app->mt_flags = 0; 1481 return 0; 1482 } 1483 1484 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1485 max, EV_KEY, (c)) 1486 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1487 struct hid_field *field, struct hid_usage *usage, 1488 unsigned long **bit, int *max) 1489 { 1490 struct mt_device *td = hid_get_drvdata(hdev); 1491 struct mt_application *application; 1492 struct mt_report_data *rdata; 1493 int ret; 1494 1495 rdata = mt_find_report_data(td, field->report); 1496 if (!rdata) { 1497 hid_err(hdev, "failed to allocate data for report\n"); 1498 return 0; 1499 } 1500 1501 application = rdata->application; 1502 1503 /* 1504 * If mtclass.export_all_inputs is not set, only map fields from 1505 * TouchScreen or TouchPad collections. We need to ignore fields 1506 * that belong to other collections such as Mouse that might have 1507 * the same GenericDesktop usages. 1508 */ 1509 if (!td->mtclass.export_all_inputs && 1510 field->application != HID_DG_TOUCHSCREEN && 1511 field->application != HID_DG_PEN && 1512 field->application != HID_DG_TOUCHPAD && 1513 field->application != HID_GD_KEYBOARD && 1514 field->application != HID_GD_SYSTEM_CONTROL && 1515 field->application != HID_CP_CONSUMER_CONTROL && 1516 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1517 field->application != HID_GD_SYSTEM_MULTIAXIS && 1518 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1519 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1520 return -1; 1521 1522 /* 1523 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1524 * touchpad report descriptor. We need to treat these as an array to 1525 * map usages to input keys. 1526 */ 1527 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1528 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1529 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1530 set_bit(EV_REP, hi->input->evbit); 1531 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1532 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1533 switch (usage->hid & HID_USAGE) { 1534 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1535 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1536 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1537 case 0x6b: mt_map_key_clear(KEY_F21); break; 1538 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1539 default: 1540 return -1; 1541 } 1542 return 1; 1543 } 1544 1545 if (rdata->is_mt_collection) 1546 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1547 application); 1548 1549 /* 1550 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1551 * for the stylus. Overwrite the hid_input application 1552 */ 1553 if (field->physical == HID_DG_STYLUS) 1554 hi->application = HID_DG_STYLUS; 1555 1556 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1557 max); 1558 if (ret != 0) 1559 return ret; 1560 1561 /* let hid-core decide for the others */ 1562 return 0; 1563 } 1564 1565 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1566 struct hid_field *field, struct hid_usage *usage, 1567 unsigned long **bit, int *max) 1568 { 1569 struct mt_device *td = hid_get_drvdata(hdev); 1570 struct mt_report_data *rdata; 1571 1572 rdata = mt_find_report_data(td, field->report); 1573 if (rdata && rdata->is_mt_collection) { 1574 /* We own these mappings, tell hid-input to ignore them */ 1575 return -1; 1576 } 1577 1578 /* let hid-core decide for the others */ 1579 return 0; 1580 } 1581 1582 static int mt_event(struct hid_device *hid, struct hid_field *field, 1583 struct hid_usage *usage, __s32 value) 1584 { 1585 struct mt_device *td = hid_get_drvdata(hid); 1586 struct mt_report_data *rdata; 1587 1588 rdata = mt_find_report_data(td, field->report); 1589 if (rdata && rdata->is_mt_collection) 1590 return mt_touch_event(hid, field, usage, value); 1591 1592 return 0; 1593 } 1594 1595 /* 1596 * Yoga Book 9 14IAH10 descriptor fixup. 1597 * 1598 * The device includes a HID_DG_TOUCHPAD application collection designed for 1599 * the Windows inbox HID driver's Win8 PTP touchpad mode. On Linux we want 1600 * only the HID_DG_TOUCHSCREEN collections. The touchpad collection (and the 1601 * HID_DG_BUTTONTYPE and Win8 compliance blob features it contains) must be 1602 * removed so hid-multitouch does not misclassify the touchscreen nodes as 1603 * indirect buttonpads. 1604 * 1605 * The firmware also resets if any USB control request is received while the 1606 * CDC-ACM interface is initialising (~1.18 s after enumeration). Dropping 1607 * the Win8 blob and Contact Count Max feature reports prevents the 1608 * GET_REPORT calls that hid-multitouch issues at probe. 1609 */ 1610 static void mt_yogabook9_fixup(struct hid_device *hdev, __u8 *rdesc, 1611 unsigned int *size) 1612 { 1613 /* Usage Page (Digitizer), Usage (Touch Pad), Collection (Application) */ 1614 static const __u8 tp_app_hdr[] = { 0x05, 0x0d, 0x09, 0x05, 0xa1, 0x01 }; 1615 /* Vendor Usage Page 0xff00 (Win8 compliance blob header) */ 1616 static const __u8 win8_page[] = { 0x06, 0x00, 0xff }; 1617 /* Usage (Contact Count Max = 0x55) */ 1618 static const __u8 ccmax_usage[] = { 0x09, 0x55 }; 1619 unsigned int i; 1620 1621 /* 1622 * Step 1: find and remove the Touch Pad application collection. 1623 * Walk HID short items from the collection header to its matching 1624 * End Collection, then close the gap with memmove. 1625 */ 1626 for (i = 0; i + sizeof(tp_app_hdr) <= *size; i++) { 1627 if (memcmp(rdesc + i, tp_app_hdr, sizeof(tp_app_hdr)) == 0) { 1628 __u8 *start = rdesc + i; 1629 __u8 *coll_end = NULL; 1630 __u8 *p = start; 1631 unsigned int drop; 1632 int depth = 0; 1633 1634 while (p < rdesc + *size) { 1635 __u8 b = *p; 1636 int ds = b & 3; 1637 int item_len; 1638 1639 if (b == 0xfe) { /* long item */ 1640 if (p + 2 >= rdesc + *size) 1641 break; 1642 item_len = p[1] + 3; 1643 } else { 1644 item_len = (ds == 3) ? 5 : ds + 1; 1645 } 1646 if (p + item_len > rdesc + *size) 1647 break; 1648 1649 if ((b & 0xfc) == 0xa0) 1650 depth++; /* Collection */ 1651 else if (b == 0xc0) { 1652 depth--; /* End Collection */ 1653 if (depth == 0) { 1654 coll_end = p; 1655 break; 1656 } 1657 } 1658 p += item_len; 1659 } 1660 1661 if (!coll_end) { 1662 hid_err(hdev, 1663 "Yoga Book 9: Touch Pad End Collection not found\n"); 1664 break; 1665 } 1666 1667 drop = coll_end - start + 1; 1668 memmove(start, coll_end + 1, rdesc + *size - coll_end - 1); 1669 *size -= drop; 1670 hid_dbg(hdev, 1671 "Yoga Book 9: dropped Touch Pad collection (%u bytes)\n", 1672 drop); 1673 break; 1674 } 1675 } 1676 1677 /* 1678 * Step 2: neutralize Win8 compliance blob feature reports remaining 1679 * in the touchscreen collections. Change Usage Page 0xff00 to 0x0f00 1680 * so the case 0xff0000c5 branch in mt_feature_mapping() is not reached 1681 * and no GET_REPORT is issued. 1682 */ 1683 for (i = 0; i + sizeof(win8_page) <= *size; i++) { 1684 if (memcmp(rdesc + i, win8_page, sizeof(win8_page)) == 0) { 1685 rdesc[i + 2] = 0x0f; /* 0xff00 -> 0x0f00 */ 1686 hid_dbg(hdev, 1687 "Yoga Book 9: neutralized Win8 blob at offset %u\n", 1688 i); 1689 } 1690 } 1691 1692 /* 1693 * Step 3: neutralize Contact Count Max feature reports. Change usage 1694 * 0x55 (HID_DG_CONTACTMAX) to 0x00 so mt_feature_mapping() does not 1695 * issue GET_REPORT. The class maxcontacts field provides the value. 1696 */ 1697 for (i = 0; i + sizeof(ccmax_usage) <= *size; i++) { 1698 if (memcmp(rdesc + i, ccmax_usage, sizeof(ccmax_usage)) == 0) { 1699 rdesc[i + 1] = 0x00; 1700 hid_dbg(hdev, 1701 "Yoga Book 9: neutralized ContactMax at offset %u\n", 1702 i); 1703 } 1704 } 1705 1706 /* 1707 * Step 4: neutralize Surface Switch (0x57) and Button Switch (0x58) 1708 * feature report usages in the Device Configuration collection. 1709 * mt_set_modes() issues HID_REQ_SET_REPORT for these on every 1710 * input-device open/close; those repeated control requests hit the 1711 * firmware's CDC-ACM init window and trigger resets. 1712 * 1713 * Input Mode (0x52) is intentionally left intact. mt_set_modes() 1714 * sends it once at probe to set the device into touchscreen mode, 1715 * which flushes the firmware's contact buffer and clears a persistent 1716 * ghost contact (cid 2, fixed coordinates) that otherwise appears on 1717 * every enumeration. By probe time cdc_acm has already satisfied the 1718 * CDC-ACM init watchdog (~130 ms), so the single SET_REPORT for Input 1719 * Mode arrives safely after the reset window has closed. 1720 */ 1721 for (i = 0; i + 2 <= *size; i++) { 1722 if (rdesc[i] == 0x09 && 1723 (rdesc[i + 1] == 0x57 || 1724 rdesc[i + 1] == 0x58)) { 1725 hid_dbg(hdev, 1726 "Yoga Book 9: neutralized set-modes usage 0x%02x at offset %u\n", 1727 rdesc[i + 1], i); 1728 rdesc[i + 1] = 0x00; 1729 } 1730 } 1731 } 1732 1733 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1734 unsigned int *size) 1735 { 1736 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1737 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1738 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1739 if (*size < 608) { 1740 dev_info( 1741 &hdev->dev, 1742 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1743 *size); 1744 return rdesc; 1745 } 1746 1747 if (rdesc[607] == 0x15) { 1748 rdesc[607] = 0x25; 1749 dev_info( 1750 &hdev->dev, 1751 "GT7868Q report descriptor fixup is applied.\n"); 1752 } else { 1753 dev_info( 1754 &hdev->dev, 1755 "The byte is not expected for fixing the report descriptor. \ 1756 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1757 got: %x\n", 1758 rdesc[607]); 1759 } 1760 } 1761 1762 if (hdev->vendor == USB_VENDOR_ID_LENOVO && 1763 hdev->product == USB_DEVICE_ID_LENOVO_YOGABOOK9I) 1764 mt_yogabook9_fixup(hdev, rdesc, size); 1765 1766 return rdesc; 1767 } 1768 1769 static void mt_report(struct hid_device *hid, struct hid_report *report) 1770 { 1771 struct mt_device *td = hid_get_drvdata(hid); 1772 struct hid_field *field = report->field[0]; 1773 struct mt_report_data *rdata; 1774 1775 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1776 return; 1777 1778 rdata = mt_find_report_data(td, report); 1779 if (rdata && rdata->is_mt_collection) 1780 return mt_touch_report(hid, rdata); 1781 1782 /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */ 1783 if (rdata && rdata->application && 1784 (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) { 1785 1786 bool all_zero_report = true; 1787 1788 for (int f = 0; f < report->maxfield && all_zero_report; f++) { 1789 struct hid_field *fld = report->field[f]; 1790 1791 for (int i = 0; i < fld->report_count; i++) { 1792 unsigned int usage = fld->usage[i].hid; 1793 1794 if (usage == HID_DG_INRANGE || 1795 usage == HID_DG_TIPSWITCH || 1796 usage == HID_DG_BARRELSWITCH || 1797 usage == HID_DG_BARRELSWITCH2 || 1798 usage == HID_DG_CONTACTID || 1799 usage == HID_DG_TILT_X || 1800 usage == HID_DG_TILT_Y) { 1801 1802 if (fld->value[i] != 0) { 1803 all_zero_report = false; 1804 break; 1805 } 1806 } 1807 } 1808 } 1809 1810 if (all_zero_report) 1811 return; 1812 } 1813 1814 if (field && field->hidinput && field->hidinput->input) 1815 input_sync(field->hidinput->input); 1816 } 1817 1818 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1819 struct hid_field *field, 1820 struct hid_usage *usage, 1821 enum latency_mode latency, 1822 enum report_mode report_mode, 1823 bool *inputmode_found) 1824 { 1825 struct mt_device *td = hid_get_drvdata(hdev); 1826 struct mt_class *cls = &td->mtclass; 1827 struct hid_report *report = field->report; 1828 unsigned int index = usage->usage_index; 1829 char *buf; 1830 u32 report_len; 1831 int max; 1832 1833 switch (usage->hid) { 1834 case HID_DG_INPUTMODE: 1835 /* 1836 * Some elan panels wrongly declare 2 input mode features, 1837 * and silently ignore when we set the value in the second 1838 * field. Skip the second feature and hope for the best. 1839 */ 1840 if (*inputmode_found) 1841 return false; 1842 1843 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1844 report_len = hid_report_len(report); 1845 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1846 if (!buf) { 1847 hid_err(hdev, 1848 "failed to allocate buffer for report\n"); 1849 return false; 1850 } 1851 hid_hw_raw_request(hdev, report->id, buf, report_len, 1852 HID_FEATURE_REPORT, 1853 HID_REQ_GET_REPORT); 1854 kfree(buf); 1855 } 1856 1857 field->value[index] = td->inputmode_value; 1858 *inputmode_found = true; 1859 return true; 1860 1861 case HID_DG_CONTACTMAX: 1862 if (cls->maxcontacts) { 1863 max = min_t(int, field->logical_maximum, 1864 cls->maxcontacts); 1865 if (field->value[index] != max) { 1866 field->value[index] = max; 1867 return true; 1868 } 1869 } 1870 break; 1871 1872 case HID_DG_LATENCYMODE: 1873 field->value[index] = latency; 1874 return true; 1875 1876 case HID_DG_SURFACESWITCH: 1877 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1878 return true; 1879 1880 case HID_DG_BUTTONSWITCH: 1881 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1882 return true; 1883 } 1884 1885 return false; /* no need to update the report */ 1886 } 1887 1888 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1889 enum report_mode report_mode) 1890 { 1891 struct hid_report_enum *rep_enum; 1892 struct hid_report *rep; 1893 struct hid_usage *usage; 1894 int i, j; 1895 bool update_report; 1896 bool inputmode_found = false; 1897 1898 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1899 list_for_each_entry(rep, &rep_enum->report_list, list) { 1900 update_report = false; 1901 1902 for (i = 0; i < rep->maxfield; i++) { 1903 /* Ignore if report count is out of bounds. */ 1904 if (rep->field[i]->report_count < 1) 1905 continue; 1906 1907 for (j = 0; j < rep->field[i]->maxusage; j++) { 1908 usage = &rep->field[i]->usage[j]; 1909 1910 if (mt_need_to_apply_feature(hdev, 1911 rep->field[i], 1912 usage, 1913 latency, 1914 report_mode, 1915 &inputmode_found)) 1916 update_report = true; 1917 } 1918 } 1919 1920 if (update_report) 1921 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1922 } 1923 } 1924 1925 static void mt_post_parse_default_settings(struct mt_device *td, 1926 struct mt_application *app) 1927 { 1928 __s32 quirks = app->quirks; 1929 1930 /* unknown serial device needs special quirks */ 1931 if (list_is_singular(&app->mt_usages)) { 1932 quirks |= MT_QUIRK_ALWAYS_VALID; 1933 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1934 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1935 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1936 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1937 } 1938 1939 app->quirks = quirks; 1940 } 1941 1942 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1943 { 1944 if (!app->have_contact_count) 1945 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1946 } 1947 1948 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1949 { 1950 struct mt_device *td = hid_get_drvdata(hdev); 1951 const char *suffix = NULL; 1952 struct mt_report_data *rdata; 1953 struct mt_application *mt_application = NULL; 1954 struct hid_report *report; 1955 int ret; 1956 1957 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1958 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 1959 td->mtclass.name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE)) { 1960 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1961 td->is_haptic_touchpad = false; 1962 } else { 1963 td->is_haptic_touchpad = false; 1964 } 1965 1966 list_for_each_entry(report, &hi->reports, hidinput_list) { 1967 rdata = mt_find_report_data(td, report); 1968 if (!rdata) { 1969 hid_err(hdev, "failed to allocate data for report\n"); 1970 return -ENOMEM; 1971 } 1972 1973 mt_application = rdata->application; 1974 1975 if (rdata->is_mt_collection) { 1976 ret = mt_touch_input_configured(hdev, hi, 1977 mt_application); 1978 if (ret) 1979 return ret; 1980 } 1981 } 1982 1983 switch (hi->application) { 1984 case HID_GD_KEYBOARD: 1985 case HID_GD_KEYPAD: 1986 case HID_GD_MOUSE: 1987 case HID_DG_TOUCHPAD: 1988 case HID_GD_SYSTEM_CONTROL: 1989 case HID_CP_CONSUMER_CONTROL: 1990 case HID_GD_WIRELESS_RADIO_CTLS: 1991 case HID_GD_SYSTEM_MULTIAXIS: 1992 case HID_DG_PEN: 1993 /* already handled by hid core */ 1994 break; 1995 case HID_DG_TOUCHSCREEN: 1996 /* we do not set suffix = "Touchscreen" */ 1997 hi->input->name = hdev->name; 1998 break; 1999 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 2000 suffix = "Custom Media Keys"; 2001 break; 2002 case HID_DG_STYLUS: 2003 /* force BTN_STYLUS to allow tablet matching in udev */ 2004 __set_bit(BTN_STYLUS, hi->input->keybit); 2005 break; 2006 default: 2007 suffix = "UNKNOWN"; 2008 break; 2009 } 2010 2011 /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */ 2012 if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) { 2013 switch (hi->report->id) { 2014 case 48: 2015 suffix = "Touchscreen Top"; 2016 break; 2017 case 56: 2018 suffix = "Touchscreen Bottom"; 2019 break; 2020 case 20: 2021 suffix = "Stylus Top"; 2022 break; 2023 case 40: 2024 suffix = "Stylus Bottom"; 2025 break; 2026 case 80: 2027 suffix = "Emulated Touchpad"; 2028 break; 2029 default: 2030 suffix = ""; 2031 break; 2032 } 2033 } 2034 2035 if (suffix) { 2036 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 2037 "%s %s", hdev->name, suffix); 2038 if (!hi->input->name) 2039 return -ENOMEM; 2040 } 2041 2042 return 0; 2043 } 2044 2045 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 2046 { 2047 if (field->usage[0].hid != usage || 2048 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 2049 return; 2050 2051 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 2052 field->flags |= HID_MAIN_ITEM_VARIABLE; 2053 } 2054 2055 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 2056 { 2057 struct hid_report *report; 2058 int i; 2059 2060 list_for_each_entry(report, 2061 &hdev->report_enum[HID_INPUT_REPORT].report_list, 2062 list) { 2063 2064 if (!report->maxfield) 2065 continue; 2066 2067 for (i = 0; i < report->maxfield; i++) 2068 if (report->field[i]->maxusage >= 1) 2069 mt_fix_const_field(report->field[i], usage); 2070 } 2071 } 2072 2073 static void mt_release_contacts(struct hid_device *hid) 2074 { 2075 struct hid_input *hidinput; 2076 struct mt_application *application; 2077 struct mt_device *td = hid_get_drvdata(hid); 2078 2079 list_for_each_entry(hidinput, &hid->inputs, list) { 2080 struct input_dev *input_dev = hidinput->input; 2081 struct input_mt *mt = input_dev->mt; 2082 int i; 2083 2084 if (mt) { 2085 for (i = 0; i < mt->num_slots; i++) { 2086 input_mt_slot(input_dev, i); 2087 input_mt_report_slot_inactive(input_dev); 2088 clear_bit(i, td->active_slots); 2089 } 2090 input_mt_sync_frame(input_dev); 2091 input_sync(input_dev); 2092 } 2093 } 2094 2095 list_for_each_entry(application, &td->applications, list) { 2096 application->num_received = 0; 2097 } 2098 } 2099 2100 static void mt_expired_timeout(struct timer_list *t) 2101 { 2102 struct mt_device *td = timer_container_of(td, t, release_timer); 2103 struct hid_device *hdev = td->hdev; 2104 2105 /* 2106 * An input report came in just before we release the sticky fingers, 2107 * it will take care of the sticky fingers. 2108 */ 2109 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 2110 return; 2111 if (!bitmap_empty(td->active_slots, td->maxcontacts)) 2112 mt_release_contacts(hdev); 2113 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 2114 } 2115 2116 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 2117 { 2118 int ret, i; 2119 struct mt_device *td; 2120 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 2121 2122 for (i = 0; mt_classes[i].name ; i++) { 2123 if (id->driver_data == mt_classes[i].name) { 2124 mtclass = &(mt_classes[i]); 2125 break; 2126 } 2127 } 2128 2129 td = devm_kzalloc_obj(&hdev->dev, struct mt_device); 2130 if (!td) { 2131 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 2132 return -ENOMEM; 2133 } 2134 td->haptic = devm_kzalloc_obj(&hdev->dev, *(td->haptic)); 2135 if (!td->haptic) 2136 return -ENOMEM; 2137 2138 td->haptic->hdev = hdev; 2139 td->hdev = hdev; 2140 td->mtclass = *mtclass; 2141 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 2142 hid_set_drvdata(hdev, td); 2143 2144 INIT_LIST_HEAD(&td->applications); 2145 INIT_LIST_HEAD(&td->reports); 2146 2147 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 2148 td->serial_maybe = true; 2149 2150 2151 /* Orientation is inverted if the X or Y axes are 2152 * flipped, but normalized if both are inverted. 2153 */ 2154 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 2155 !((hdev->quirks & HID_QUIRK_X_INVERT) 2156 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 2157 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 2158 2159 /* This allows the driver to correctly support devices 2160 * that emit events over several HID messages. 2161 */ 2162 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 2163 2164 /* 2165 * This allows the driver to handle different input sensors 2166 * that emits events through different applications on the same HID 2167 * device. 2168 */ 2169 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 2170 2171 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 2172 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2173 2174 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 2175 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 2176 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2177 } 2178 2179 timer_setup(&td->release_timer, mt_expired_timeout, 0); 2180 2181 ret = hid_parse(hdev); 2182 if (ret != 0) 2183 return ret; 2184 2185 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 2186 !hid_find_field(hdev, HID_INPUT_REPORT, 2187 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 2188 return -ENODEV; 2189 2190 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 2191 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 2192 2193 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 2194 hdev->quirks |= HID_QUIRK_NOGET; 2195 2196 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 2197 if (ret) 2198 return ret; 2199 2200 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 2201 if (ret) 2202 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 2203 hdev->name); 2204 2205 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2206 2207 if (!td->is_haptic_touchpad) 2208 devm_kfree(&hdev->dev, td->haptic); 2209 2210 return 0; 2211 } 2212 2213 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 2214 { 2215 struct mt_device *td = hid_get_drvdata(hdev); 2216 2217 /* High latency is desirable for power savings during S3/S0ix */ 2218 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 2219 !hid_hw_may_wakeup(hdev)) 2220 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2221 else 2222 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 2223 2224 return 0; 2225 } 2226 2227 static int mt_reset_resume(struct hid_device *hdev) 2228 { 2229 mt_release_contacts(hdev); 2230 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2231 return 0; 2232 } 2233 2234 static int mt_resume(struct hid_device *hdev) 2235 { 2236 /* Some Elan legacy devices require SET_IDLE to be set on resume. 2237 * It should be safe to send it to other devices too. 2238 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 2239 2240 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 2241 2242 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2243 2244 return 0; 2245 } 2246 2247 static void mt_remove(struct hid_device *hdev) 2248 { 2249 struct mt_device *td = hid_get_drvdata(hdev); 2250 2251 timer_shutdown_sync(&td->release_timer); 2252 2253 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 2254 hid_hw_stop(hdev); 2255 } 2256 2257 static void mt_on_hid_hw_open(struct hid_device *hdev) 2258 { 2259 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2260 } 2261 2262 static void mt_on_hid_hw_close(struct hid_device *hdev) 2263 { 2264 struct mt_device *td = hid_get_drvdata(hdev); 2265 2266 if (td->mtclass.quirks & MT_QUIRK_KEEP_LATENCY_ON_CLOSE) 2267 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE); 2268 else 2269 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2270 } 2271 2272 /* 2273 * This list contains only: 2274 * - VID/PID of products not working with the default multitouch handling 2275 * - 2 generic rules. 2276 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2277 */ 2278 static const struct hid_device_id mt_devices[] = { 2279 2280 /* 3M panels */ 2281 { .driver_data = MT_CLS_3M, 2282 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2283 USB_DEVICE_ID_3M1968) }, 2284 { .driver_data = MT_CLS_3M, 2285 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2286 USB_DEVICE_ID_3M2256) }, 2287 { .driver_data = MT_CLS_3M, 2288 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2289 USB_DEVICE_ID_3M3266) }, 2290 2291 /* Anton devices */ 2292 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2293 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2294 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2295 2296 /* Asus T101HA */ 2297 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2298 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2299 USB_VENDOR_ID_ASUSTEK, 2300 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2301 2302 /* Asus T304UA */ 2303 { .driver_data = MT_CLS_ASUS, 2304 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2305 USB_VENDOR_ID_ASUSTEK, 2306 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2307 2308 /* Atmel panels */ 2309 { .driver_data = MT_CLS_SERIAL, 2310 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2311 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2312 2313 /* Baanto multitouch devices */ 2314 { .driver_data = MT_CLS_NSMU, 2315 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2316 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2317 2318 /* Cando panels */ 2319 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2320 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2321 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2322 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2323 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2324 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2325 2326 /* Chunghwa Telecom touch panels */ 2327 { .driver_data = MT_CLS_NSMU, 2328 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2329 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2330 2331 /* CJTouch panels */ 2332 { .driver_data = MT_CLS_NSMU, 2333 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2334 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2335 { .driver_data = MT_CLS_NSMU, 2336 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2337 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2338 2339 /* CVTouch panels */ 2340 { .driver_data = MT_CLS_NSMU, 2341 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2342 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2343 2344 /* eGalax devices (SAW) */ 2345 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2346 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2347 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2348 2349 /* eGalax devices (resistive) */ 2350 { .driver_data = MT_CLS_EGALAX, 2351 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2352 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2353 { .driver_data = MT_CLS_EGALAX, 2354 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2355 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2356 2357 /* eGalax devices (capacitive) */ 2358 { .driver_data = MT_CLS_EGALAX_SERIAL, 2359 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2360 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2361 { .driver_data = MT_CLS_EGALAX, 2362 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2363 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2364 { .driver_data = MT_CLS_EGALAX_SERIAL, 2365 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2366 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2367 { .driver_data = MT_CLS_EGALAX_SERIAL, 2368 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2369 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2370 { .driver_data = MT_CLS_EGALAX_SERIAL, 2371 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2372 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2373 { .driver_data = MT_CLS_EGALAX_SERIAL, 2374 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2375 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2376 { .driver_data = MT_CLS_EGALAX, 2377 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2378 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2379 { .driver_data = MT_CLS_EGALAX, 2380 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2381 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2382 { .driver_data = MT_CLS_EGALAX_SERIAL, 2383 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2384 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2385 { .driver_data = MT_CLS_EGALAX, 2386 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2387 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2388 { .driver_data = MT_CLS_EGALAX, 2389 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2390 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2391 { .driver_data = MT_CLS_EGALAX, 2392 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2393 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2394 { .driver_data = MT_CLS_EGALAX, 2395 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2396 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2397 { .driver_data = MT_CLS_EGALAX_SERIAL, 2398 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2399 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2400 { .driver_data = MT_CLS_EGALAX_SERIAL, 2401 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2402 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2403 { .driver_data = MT_CLS_EGALAX_SERIAL, 2404 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2405 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2406 { .driver_data = MT_CLS_EGALAX_SERIAL, 2407 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2408 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C000) }, 2409 { .driver_data = MT_CLS_EGALAX_P80H84, 2410 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2411 USB_VENDOR_ID_DWAV, 2412 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2413 2414 /* Elan devices */ 2415 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2416 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2417 USB_VENDOR_ID_ELAN, 0x313a) }, 2418 2419 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2420 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2421 USB_VENDOR_ID_ELAN, 0x3148) }, 2422 2423 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2424 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2425 USB_VENDOR_ID_ELAN, 0x32ae) }, 2426 2427 /* Elitegroup panel */ 2428 { .driver_data = MT_CLS_SERIAL, 2429 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2430 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2431 2432 /* Flatfrog Panels */ 2433 { .driver_data = MT_CLS_FLATFROG, 2434 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2435 USB_DEVICE_ID_MULTITOUCH_3200) }, 2436 2437 /* FocalTech Panels */ 2438 { .driver_data = MT_CLS_SERIAL, 2439 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2440 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2441 2442 /* GeneralTouch panel */ 2443 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2444 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2445 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2446 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2447 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2448 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2449 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2450 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2451 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2452 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2453 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2454 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2455 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2456 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2457 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2458 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2459 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2460 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2461 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2462 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2463 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2464 2465 /* Gametel game controller */ 2466 { .driver_data = MT_CLS_NSMU, 2467 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2468 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2469 2470 /* Goodix GT7868Q devices */ 2471 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2472 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2473 I2C_DEVICE_ID_GOODIX_01E8) }, 2474 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2475 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2476 I2C_DEVICE_ID_GOODIX_01E9) }, 2477 2478 /* GoodTouch panels */ 2479 { .driver_data = MT_CLS_NSMU, 2480 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2481 USB_DEVICE_ID_GOODTOUCH_000f) }, 2482 2483 /* Hanvon panels */ 2484 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2485 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2486 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2487 2488 /* HONOR GLO-GXXX panel */ 2489 { .driver_data = MT_CLS_VTL, 2490 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2491 0x347d, 0x7853) }, 2492 2493 /* HONOR MagicBook Art 14 touchpad */ 2494 { .driver_data = MT_CLS_VTL, 2495 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2496 0x35cc, 0x0104) }, 2497 2498 /* Ilitek dual touch panel */ 2499 { .driver_data = MT_CLS_NSMU, 2500 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2501 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2502 2503 /* LG Melfas panel */ 2504 { .driver_data = MT_CLS_LG, 2505 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2506 USB_DEVICE_ID_LG_MELFAS_MT) }, 2507 { .driver_data = MT_CLS_LG, 2508 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2509 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2510 2511 /* Lenovo X1 TAB Gen 1 */ 2512 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2513 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2514 USB_VENDOR_ID_LENOVO, 2515 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2516 2517 /* Lenovo X1 TAB Gen 2 */ 2518 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2519 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2520 USB_VENDOR_ID_LENOVO, 2521 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2522 2523 /* Lenovo X1 TAB Gen 3 */ 2524 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2525 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2526 USB_VENDOR_ID_LENOVO, 2527 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2528 2529 /* Lenovo X12 TAB Gen 1 */ 2530 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2531 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2532 USB_VENDOR_ID_LENOVO, 2533 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2534 2535 /* Lenovo X12 TAB Gen 2 */ 2536 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2537 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2538 USB_VENDOR_ID_LENOVO, 2539 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2540 2541 /* Lenovo Yoga Book 9i */ 2542 { .driver_data = MT_CLS_YOGABOOK9I, 2543 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2544 USB_VENDOR_ID_LENOVO, 2545 USB_DEVICE_ID_LENOVO_YOGABOOK9I) }, 2546 2547 /* Logitech devices */ 2548 { .driver_data = MT_CLS_NSMU, 2549 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2550 USB_VENDOR_ID_LOGITECH, 2551 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2552 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2553 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2554 USB_VENDOR_ID_LOGITECH, 2555 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2556 2557 /* MosArt panels */ 2558 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2559 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2560 USB_DEVICE_ID_ASUS_T91MT)}, 2561 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2562 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2563 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2564 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2565 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2566 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2567 2568 /* Novatek Panel */ 2569 { .driver_data = MT_CLS_NSMU, 2570 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2571 USB_DEVICE_ID_NOVATEK_PCT) }, 2572 2573 /* Ntrig Panel */ 2574 { .driver_data = MT_CLS_NSMU, 2575 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2576 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2577 2578 /* Panasonic panels */ 2579 { .driver_data = MT_CLS_PANASONIC, 2580 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2581 USB_DEVICE_ID_PANABOARD_UBT780) }, 2582 { .driver_data = MT_CLS_PANASONIC, 2583 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2584 USB_DEVICE_ID_PANABOARD_UBT880) }, 2585 2586 /* PixArt optical touch screen */ 2587 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2588 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2589 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2590 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2591 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2592 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2593 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2594 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2595 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2596 2597 /* PixCir-based panels */ 2598 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2599 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2600 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2601 2602 /* Quanta-based panels */ 2603 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2604 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2605 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2606 2607 /* Razer touchpads */ 2608 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2609 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2610 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2611 2612 /* Smart Tech panels */ 2613 { .driver_data = MT_CLS_SMART_TECH, 2614 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2615 2616 /* Stantum panels */ 2617 { .driver_data = MT_CLS_CONFIDENCE, 2618 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2619 USB_DEVICE_ID_MTP_STM)}, 2620 2621 /* Synaptics devices */ 2622 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2623 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2624 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2625 2626 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2627 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2628 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2629 2630 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2631 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2632 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2633 2634 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2635 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2636 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2637 2638 /* TopSeed panels */ 2639 { .driver_data = MT_CLS_TOPSEED, 2640 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2641 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2642 2643 /* Touch International panels */ 2644 { .driver_data = MT_CLS_NSMU, 2645 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2646 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2647 2648 /* Unitec panels */ 2649 { .driver_data = MT_CLS_NSMU, 2650 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2651 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2652 { .driver_data = MT_CLS_NSMU, 2653 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2654 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2655 2656 /* Uniwill touchpads */ 2657 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2658 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2659 USB_VENDOR_ID_PIXART, 0x0255) }, 2660 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2661 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2662 USB_VENDOR_ID_PIXART, 0x0274) }, 2663 2664 /* VTL panels */ 2665 { .driver_data = MT_CLS_VTL, 2666 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2667 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2668 2669 /* Winbond Electronics Corp. */ 2670 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2671 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2672 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2673 2674 /* Wistron panels */ 2675 { .driver_data = MT_CLS_NSMU, 2676 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2677 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2678 2679 /* XAT */ 2680 { .driver_data = MT_CLS_NSMU, 2681 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2682 USB_DEVICE_ID_XAT_CSR) }, 2683 2684 /* Xiroku */ 2685 { .driver_data = MT_CLS_NSMU, 2686 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2687 USB_DEVICE_ID_XIROKU_SPX) }, 2688 { .driver_data = MT_CLS_NSMU, 2689 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2690 USB_DEVICE_ID_XIROKU_MPX) }, 2691 { .driver_data = MT_CLS_NSMU, 2692 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2693 USB_DEVICE_ID_XIROKU_CSR) }, 2694 { .driver_data = MT_CLS_NSMU, 2695 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2696 USB_DEVICE_ID_XIROKU_SPX1) }, 2697 { .driver_data = MT_CLS_NSMU, 2698 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2699 USB_DEVICE_ID_XIROKU_MPX1) }, 2700 { .driver_data = MT_CLS_NSMU, 2701 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2702 USB_DEVICE_ID_XIROKU_CSR1) }, 2703 { .driver_data = MT_CLS_NSMU, 2704 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2705 USB_DEVICE_ID_XIROKU_SPX2) }, 2706 { .driver_data = MT_CLS_NSMU, 2707 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2708 USB_DEVICE_ID_XIROKU_MPX2) }, 2709 { .driver_data = MT_CLS_NSMU, 2710 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2711 USB_DEVICE_ID_XIROKU_CSR2) }, 2712 2713 /* Apple Touch Bar */ 2714 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2715 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2716 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2717 2718 /* Google MT devices */ 2719 { .driver_data = MT_CLS_GOOGLE, 2720 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2721 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2722 { .driver_data = MT_CLS_GOOGLE, 2723 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2724 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2725 2726 /* sis */ 2727 { .driver_data = MT_CLS_SIS, 2728 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2729 HID_ANY_ID) }, 2730 2731 /* Hantick */ 2732 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2733 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2734 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2735 2736 /* Asus ROG Flow Z13 (2025) GZ302EA keyboard-cover touchpad */ 2737 { .driver_data = MT_CLS_ASUS_ROG_Z13_FOLIO, 2738 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2739 USB_VENDOR_ID_ASUSTEK, 2740 USB_DEVICE_ID_ASUSTEK_ROG_Z13_FOLIO) }, 2741 2742 /* Generic MT device */ 2743 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2744 2745 /* Generic Win 8 certified MT device */ 2746 { .driver_data = MT_CLS_WIN_8, 2747 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2748 HID_ANY_ID, HID_ANY_ID) }, 2749 { } 2750 }; 2751 MODULE_DEVICE_TABLE(hid, mt_devices); 2752 2753 static const struct hid_usage_id mt_grabbed_usages[] = { 2754 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2755 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2756 }; 2757 2758 static struct hid_driver mt_driver = { 2759 .name = "hid-multitouch", 2760 .id_table = mt_devices, 2761 .probe = mt_probe, 2762 .remove = mt_remove, 2763 .input_mapping = mt_input_mapping, 2764 .input_mapped = mt_input_mapped, 2765 .input_configured = mt_input_configured, 2766 .feature_mapping = mt_feature_mapping, 2767 .usage_table = mt_grabbed_usages, 2768 .event = mt_event, 2769 .report_fixup = mt_report_fixup, 2770 .report = mt_report, 2771 .suspend = pm_ptr(mt_suspend), 2772 .reset_resume = pm_ptr(mt_reset_resume), 2773 .resume = pm_ptr(mt_resume), 2774 .on_hid_hw_open = mt_on_hid_hw_open, 2775 .on_hid_hw_close = mt_on_hid_hw_close, 2776 }; 2777 module_hid_driver(mt_driver); 2778