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