1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for multitouch panels 4 * 5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 8 * Copyright (c) 2012-2013 Red Hat, Inc 9 * 10 * This code is partly based on hid-egalax.c: 11 * 12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 14 * Copyright (c) 2010 Canonical, Ltd. 15 * 16 * This code is partly based on hid-3m-pct.c: 17 * 18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 20 * Copyright (c) 2010 Canonical, Ltd. 21 */ 22 23 /* 24 */ 25 26 /* 27 * This driver is regularly tested thanks to the test suite in hid-tools[1]. 28 * Please run these regression tests before patching this module so that 29 * your patch won't break existing known devices. 30 * 31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools 32 */ 33 34 #include <linux/bits.h> 35 #include <linux/device.h> 36 #include <linux/hid.h> 37 #include <linux/module.h> 38 #include <linux/slab.h> 39 #include <linux/input/mt.h> 40 #include <linux/jiffies.h> 41 #include <linux/string.h> 42 #include <linux/timer.h> 43 44 45 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 46 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 47 MODULE_DESCRIPTION("HID multitouch panels"); 48 MODULE_LICENSE("GPL"); 49 50 #include "hid-ids.h" 51 52 #include "hid-haptic.h" 53 54 /* quirks to control the device */ 55 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 56 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 57 #define MT_QUIRK_CYPRESS BIT(2) 58 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 59 #define MT_QUIRK_ALWAYS_VALID BIT(4) 60 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 61 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 62 #define MT_QUIRK_CONFIDENCE BIT(7) 63 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 64 #define MT_QUIRK_NO_AREA BIT(9) 65 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 66 #define MT_QUIRK_HOVERING BIT(11) 67 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 68 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 69 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 70 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 71 #define MT_QUIRK_STICKY_FINGERS BIT(16) 72 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 73 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 74 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 75 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 76 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 77 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 78 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 79 #define MT_QUIRK_YOGABOOK9I BIT(24) 80 #define MT_QUIRK_KEEP_LATENCY_ON_CLOSE BIT(25) 81 82 #define MT_INPUTMODE_TOUCHSCREEN 0x02 83 #define MT_INPUTMODE_TOUCHPAD 0x03 84 85 #define MT_BUTTONTYPE_CLICKPAD 0 86 #define MT_BUTTONTYPE_PRESSUREPAD 1 87 88 enum latency_mode { 89 HID_LATENCY_NORMAL = 0, 90 HID_LATENCY_HIGH = 1, 91 }; 92 93 enum report_mode { 94 TOUCHPAD_REPORT_NONE = 0, 95 TOUCHPAD_REPORT_BUTTONS = BIT(0), 96 TOUCHPAD_REPORT_CONTACTS = BIT(1), 97 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 98 }; 99 100 #define MT_IO_SLOTS_MASK GENMASK(7, 0) /* reserve first 8 bits for slot tracking */ 101 #define MT_IO_FLAGS_RUNNING 32 102 103 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 * first 8 bits are reserved for keeping the slot 179 * states, this is fine because we only support up 180 * to 250 slots (MT_MAX_MAXCONTACT) 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_SIS 0x0457 240 241 #define MT_DEFAULT_MAXCONTACT 10 242 #define MT_MAX_MAXCONTACT 250 243 244 /* 245 * Resync device and local timestamps after that many microseconds without 246 * receiving data. 247 */ 248 #define MAX_TIMESTAMP_INTERVAL 1000000 249 250 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 251 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 252 253 /* 254 * these device-dependent functions determine what slot corresponds 255 * to a valid contact that was just read. 256 */ 257 258 static int cypress_compute_slot(struct mt_application *application, 259 struct mt_usages *slot) 260 { 261 if (*slot->contactid != 0 || application->num_received == 0) 262 return *slot->contactid; 263 else 264 return -1; 265 } 266 267 static const struct mt_class mt_classes[] = { 268 { .name = MT_CLS_DEFAULT, 269 .quirks = MT_QUIRK_ALWAYS_VALID | 270 MT_QUIRK_CONTACT_CNT_ACCURATE }, 271 { .name = MT_CLS_NSMU, 272 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 273 { .name = MT_CLS_SERIAL, 274 .quirks = MT_QUIRK_ALWAYS_VALID}, 275 { .name = MT_CLS_CONFIDENCE, 276 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 277 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 278 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 279 MT_QUIRK_SLOT_IS_CONTACTID }, 280 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 281 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 282 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 283 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 284 .quirks = MT_QUIRK_VALID_IS_INRANGE | 285 MT_QUIRK_SLOT_IS_CONTACTID, 286 .maxcontacts = 2 }, 287 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 288 .quirks = MT_QUIRK_VALID_IS_INRANGE | 289 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 290 .maxcontacts = 2 }, 291 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 292 .quirks = MT_QUIRK_VALID_IS_INRANGE | 293 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 294 { .name = MT_CLS_WIN_8, 295 .quirks = MT_QUIRK_ALWAYS_VALID | 296 MT_QUIRK_IGNORE_DUPLICATES | 297 MT_QUIRK_HOVERING | 298 MT_QUIRK_CONTACT_CNT_ACCURATE | 299 MT_QUIRK_STICKY_FINGERS | 300 MT_QUIRK_WIN8_PTP_BUTTONS, 301 .export_all_inputs = true }, 302 { .name = MT_CLS_EXPORT_ALL_INPUTS, 303 .quirks = MT_QUIRK_ALWAYS_VALID | 304 MT_QUIRK_CONTACT_CNT_ACCURATE, 305 .export_all_inputs = true }, 306 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 307 .quirks = MT_QUIRK_ALWAYS_VALID | 308 MT_QUIRK_IGNORE_DUPLICATES | 309 MT_QUIRK_HOVERING | 310 MT_QUIRK_CONTACT_CNT_ACCURATE | 311 MT_QUIRK_STICKY_FINGERS | 312 MT_QUIRK_WIN8_PTP_BUTTONS | 313 MT_QUIRK_FORCE_MULTI_INPUT, 314 .export_all_inputs = true }, 315 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 316 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 317 MT_QUIRK_HOVERING | 318 MT_QUIRK_CONTACT_CNT_ACCURATE | 319 MT_QUIRK_STICKY_FINGERS | 320 MT_QUIRK_WIN8_PTP_BUTTONS | 321 MT_QUIRK_FORCE_MULTI_INPUT | 322 MT_QUIRK_NOT_SEEN_MEANS_UP, 323 .export_all_inputs = true }, 324 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 325 .quirks = MT_QUIRK_ALWAYS_VALID | 326 MT_QUIRK_IGNORE_DUPLICATES | 327 MT_QUIRK_HOVERING | 328 MT_QUIRK_CONTACT_CNT_ACCURATE | 329 MT_QUIRK_STICKY_FINGERS | 330 MT_QUIRK_WIN8_PTP_BUTTONS | 331 MT_QUIRK_DISABLE_WAKEUP, 332 .export_all_inputs = true }, 333 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 334 .quirks = MT_QUIRK_ALWAYS_VALID | 335 MT_QUIRK_IGNORE_DUPLICATES | 336 MT_QUIRK_HOVERING | 337 MT_QUIRK_CONTACT_CNT_ACCURATE | 338 MT_QUIRK_WIN8_PTP_BUTTONS, 339 .export_all_inputs = true }, 340 { .name = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 341 .quirks = MT_QUIRK_ALWAYS_VALID | 342 MT_QUIRK_IGNORE_DUPLICATES | 343 MT_QUIRK_HOVERING | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_STICKY_FINGERS | 346 MT_QUIRK_WIN8_PTP_BUTTONS | 347 MT_QUIRK_KEEP_LATENCY_ON_CLOSE, 348 .export_all_inputs = true }, 349 350 /* 351 * vendor specific classes 352 */ 353 { .name = MT_CLS_3M, 354 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 355 MT_QUIRK_SLOT_IS_CONTACTID | 356 MT_QUIRK_TOUCH_SIZE_SCALING, 357 .sn_move = 2048, 358 .sn_width = 128, 359 .sn_height = 128, 360 .maxcontacts = 60, 361 }, 362 { .name = MT_CLS_EGALAX, 363 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 364 MT_QUIRK_VALID_IS_INRANGE, 365 .sn_move = 4096, 366 .sn_pressure = 32, 367 }, 368 { .name = MT_CLS_EGALAX_SERIAL, 369 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 370 MT_QUIRK_ALWAYS_VALID, 371 .sn_move = 4096, 372 .sn_pressure = 32, 373 }, 374 { .name = MT_CLS_TOPSEED, 375 .quirks = MT_QUIRK_ALWAYS_VALID, 376 .is_indirect = true, 377 .maxcontacts = 2, 378 }, 379 { .name = MT_CLS_PANASONIC, 380 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 381 .maxcontacts = 4 }, 382 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 383 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 384 MT_QUIRK_VALID_IS_INRANGE | 385 MT_QUIRK_SLOT_IS_CONTACTID, 386 .maxcontacts = 2 387 }, 388 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 389 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 390 MT_QUIRK_SLOT_IS_CONTACTID 391 }, 392 393 { .name = MT_CLS_FLATFROG, 394 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 395 MT_QUIRK_NO_AREA, 396 .sn_move = 2048, 397 .maxcontacts = 40, 398 }, 399 { .name = MT_CLS_LG, 400 .quirks = MT_QUIRK_ALWAYS_VALID | 401 MT_QUIRK_FIX_CONST_CONTACT_ID | 402 MT_QUIRK_IGNORE_DUPLICATES | 403 MT_QUIRK_HOVERING | 404 MT_QUIRK_CONTACT_CNT_ACCURATE }, 405 { .name = MT_CLS_ASUS, 406 .quirks = MT_QUIRK_ALWAYS_VALID | 407 MT_QUIRK_CONTACT_CNT_ACCURATE | 408 MT_QUIRK_ASUS_CUSTOM_UP }, 409 { .name = MT_CLS_VTL, 410 .quirks = MT_QUIRK_ALWAYS_VALID | 411 MT_QUIRK_CONTACT_CNT_ACCURATE | 412 MT_QUIRK_STICKY_FINGERS | 413 MT_QUIRK_FORCE_GET_FEATURE, 414 }, 415 { .name = MT_CLS_GOOGLE, 416 .quirks = MT_QUIRK_ALWAYS_VALID | 417 MT_QUIRK_CONTACT_CNT_ACCURATE | 418 MT_QUIRK_SLOT_IS_CONTACTID | 419 MT_QUIRK_HOVERING 420 }, 421 { .name = MT_CLS_RAZER_BLADE_STEALTH, 422 .quirks = MT_QUIRK_ALWAYS_VALID | 423 MT_QUIRK_IGNORE_DUPLICATES | 424 MT_QUIRK_HOVERING | 425 MT_QUIRK_CONTACT_CNT_ACCURATE | 426 MT_QUIRK_WIN8_PTP_BUTTONS, 427 }, 428 { .name = MT_CLS_SMART_TECH, 429 .quirks = MT_QUIRK_ALWAYS_VALID | 430 MT_QUIRK_IGNORE_DUPLICATES | 431 MT_QUIRK_CONTACT_CNT_ACCURATE | 432 MT_QUIRK_SEPARATE_APP_REPORT, 433 }, 434 { .name = MT_CLS_APPLE_TOUCHBAR, 435 .quirks = MT_QUIRK_HOVERING | 436 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 437 MT_QUIRK_APPLE_TOUCHBAR, 438 .maxcontacts = 11, 439 }, 440 { .name = MT_CLS_SIS, 441 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 442 MT_QUIRK_ALWAYS_VALID | 443 MT_QUIRK_CONTACT_CNT_ACCURATE, 444 }, 445 { .name = MT_CLS_YOGABOOK9I, 446 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 447 MT_QUIRK_ALWAYS_VALID | 448 MT_QUIRK_CONTACT_CNT_ACCURATE | 449 MT_QUIRK_FORCE_MULTI_INPUT | 450 MT_QUIRK_SEPARATE_APP_REPORT | 451 MT_QUIRK_HOVERING | 452 MT_QUIRK_YOGABOOK9I, 453 .maxcontacts = 10, 454 .export_all_inputs = true 455 }, 456 { .name = MT_CLS_EGALAX_P80H84, 457 .quirks = MT_QUIRK_ALWAYS_VALID | 458 MT_QUIRK_IGNORE_DUPLICATES | 459 MT_QUIRK_CONTACT_CNT_ACCURATE, 460 }, 461 { } 462 }; 463 464 static ssize_t mt_show_quirks(struct device *dev, 465 struct device_attribute *attr, 466 char *buf) 467 { 468 struct hid_device *hdev = to_hid_device(dev); 469 struct mt_device *td = hid_get_drvdata(hdev); 470 471 return sprintf(buf, "%u\n", td->mtclass.quirks); 472 } 473 474 static ssize_t mt_set_quirks(struct device *dev, 475 struct device_attribute *attr, 476 const char *buf, size_t count) 477 { 478 struct hid_device *hdev = to_hid_device(dev); 479 struct mt_device *td = hid_get_drvdata(hdev); 480 struct mt_application *application; 481 482 unsigned long val; 483 484 if (kstrtoul(buf, 0, &val)) 485 return -EINVAL; 486 487 td->mtclass.quirks = val; 488 489 list_for_each_entry(application, &td->applications, list) { 490 application->quirks = val; 491 if (!application->have_contact_count) 492 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 493 } 494 495 return count; 496 } 497 498 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 499 500 static struct attribute *sysfs_attrs[] = { 501 &dev_attr_quirks.attr, 502 NULL 503 }; 504 505 static const struct attribute_group mt_attribute_group = { 506 .attrs = sysfs_attrs 507 }; 508 509 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 510 { 511 int ret; 512 u32 size = hid_report_len(report); 513 u8 *buf; 514 515 /* 516 * Do not fetch the feature report if the device has been explicitly 517 * marked as non-capable. 518 */ 519 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 520 return; 521 522 buf = hid_alloc_report_buf(report, GFP_KERNEL); 523 if (!buf) 524 return; 525 526 ret = hid_hw_raw_request(hdev, report->id, buf, size, 527 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 528 if (ret < 0) { 529 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 530 report->id); 531 } else { 532 /* The report ID in the request and the response should match */ 533 if (report->id != buf[0]) { 534 hid_err(hdev, "Returned feature report did not match the request\n"); 535 goto free; 536 } 537 538 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 539 size, size, 0); 540 if (ret) 541 dev_warn(&hdev->dev, "failed to report feature\n"); 542 } 543 544 free: 545 kfree(buf); 546 } 547 548 static void mt_feature_mapping(struct hid_device *hdev, 549 struct hid_field *field, struct hid_usage *usage) 550 { 551 struct mt_device *td = hid_get_drvdata(hdev); 552 553 switch (usage->hid) { 554 case HID_DG_CONTACTMAX: 555 mt_get_feature(hdev, field->report); 556 557 td->maxcontacts = field->value[0]; 558 if (!td->maxcontacts && 559 field->logical_maximum <= MT_MAX_MAXCONTACT) 560 td->maxcontacts = field->logical_maximum; 561 if (td->mtclass.maxcontacts) 562 /* check if the maxcontacts is given by the class */ 563 td->maxcontacts = td->mtclass.maxcontacts; 564 565 break; 566 case HID_DG_BUTTONTYPE: 567 if (usage->usage_index >= field->report_count) { 568 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 569 break; 570 } 571 572 mt_get_feature(hdev, field->report); 573 switch (field->value[usage->usage_index]) { 574 case MT_BUTTONTYPE_CLICKPAD: 575 td->is_buttonpad = true; 576 break; 577 case MT_BUTTONTYPE_PRESSUREPAD: 578 td->is_pressurepad = true; 579 break; 580 } 581 582 break; 583 case 0xff0000c5: 584 /* Retrieve the Win8 blob once to enable some devices */ 585 if (usage->usage_index == 0) 586 mt_get_feature(hdev, field->report); 587 break; 588 } 589 590 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 591 } 592 593 static void set_abs(struct input_dev *input, unsigned int code, 594 struct hid_field *field, int snratio) 595 { 596 int fmin = field->logical_minimum; 597 int fmax = field->logical_maximum; 598 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 599 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 600 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 601 } 602 603 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 604 struct mt_application *application) 605 { 606 struct mt_usages *usage; 607 608 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 609 if (!usage) 610 return NULL; 611 612 /* set some defaults so we do not need to check for null pointers */ 613 usage->x = DEFAULT_ZERO; 614 usage->y = DEFAULT_ZERO; 615 usage->cx = DEFAULT_ZERO; 616 usage->cy = DEFAULT_ZERO; 617 usage->p = DEFAULT_ZERO; 618 usage->w = DEFAULT_ZERO; 619 usage->h = DEFAULT_ZERO; 620 usage->a = DEFAULT_ZERO; 621 usage->contactid = DEFAULT_ZERO; 622 usage->tip_state = DEFAULT_FALSE; 623 usage->inrange_state = DEFAULT_FALSE; 624 usage->confidence_state = DEFAULT_TRUE; 625 626 list_add_tail(&usage->list, &application->mt_usages); 627 628 return usage; 629 } 630 631 static struct mt_application *mt_allocate_application(struct mt_device *td, 632 struct hid_report *report) 633 { 634 unsigned int application = report->application; 635 struct mt_application *mt_application; 636 637 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 638 GFP_KERNEL); 639 if (!mt_application) 640 return NULL; 641 642 mt_application->application = application; 643 INIT_LIST_HEAD(&mt_application->mt_usages); 644 645 if (application == HID_DG_TOUCHSCREEN) 646 mt_application->mt_flags |= INPUT_MT_DIRECT; 647 648 /* 649 * Model touchscreens providing buttons as touchpads. 650 */ 651 if (application == HID_DG_TOUCHPAD) { 652 mt_application->mt_flags |= INPUT_MT_POINTER; 653 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 654 } 655 656 mt_application->scantime = DEFAULT_ZERO; 657 mt_application->raw_cc = DEFAULT_ZERO; 658 mt_application->quirks = td->mtclass.quirks; 659 mt_application->report_id = report->id; 660 661 list_add_tail(&mt_application->list, &td->applications); 662 663 return mt_application; 664 } 665 666 static struct mt_application *mt_find_application(struct mt_device *td, 667 struct hid_report *report) 668 { 669 unsigned int application = report->application; 670 struct mt_application *tmp, *mt_application = NULL; 671 672 list_for_each_entry(tmp, &td->applications, list) { 673 if (application == tmp->application) { 674 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 675 tmp->report_id == report->id) { 676 mt_application = tmp; 677 break; 678 } 679 } 680 } 681 682 if (!mt_application) 683 mt_application = mt_allocate_application(td, report); 684 685 return mt_application; 686 } 687 688 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 689 struct hid_report *report) 690 { 691 struct mt_class *cls = &td->mtclass; 692 struct mt_report_data *rdata; 693 struct hid_field *field; 694 int r, n; 695 696 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 697 if (!rdata) 698 return NULL; 699 700 rdata->report = report; 701 rdata->application = mt_find_application(td, report); 702 703 if (!rdata->application) { 704 devm_kfree(&td->hdev->dev, rdata); 705 return NULL; 706 } 707 708 for (r = 0; r < report->maxfield; r++) { 709 field = report->field[r]; 710 711 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 712 continue; 713 714 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 715 for (n = 0; n < field->report_count; n++) { 716 unsigned int hid = field->usage[n].hid; 717 718 if (hid == HID_DG_CONTACTID || 719 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 720 hid == HID_DG_TRANSDUCER_INDEX)) { 721 rdata->is_mt_collection = true; 722 break; 723 } 724 } 725 } 726 } 727 728 list_add_tail(&rdata->list, &td->reports); 729 730 return rdata; 731 } 732 733 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 734 struct hid_report *report) 735 { 736 struct mt_report_data *tmp, *rdata = NULL; 737 738 list_for_each_entry(tmp, &td->reports, list) { 739 if (report == tmp->report) { 740 rdata = tmp; 741 break; 742 } 743 } 744 745 if (!rdata) 746 rdata = mt_allocate_report_data(td, report); 747 748 return rdata; 749 } 750 751 static void mt_store_field(struct hid_device *hdev, 752 struct mt_application *application, 753 __s32 *value, 754 size_t offset) 755 { 756 struct mt_usages *usage; 757 __s32 **target; 758 759 if (list_empty(&application->mt_usages)) 760 usage = mt_allocate_usage(hdev, application); 761 else 762 usage = list_last_entry(&application->mt_usages, 763 struct mt_usages, 764 list); 765 766 if (!usage) 767 return; 768 769 target = (__s32 **)((char *)usage + offset); 770 771 /* the value has already been filled, create a new slot */ 772 if (*target != DEFAULT_TRUE && 773 *target != DEFAULT_FALSE && 774 *target != DEFAULT_ZERO) { 775 if (usage->contactid == DEFAULT_ZERO || 776 usage->x == DEFAULT_ZERO || 777 usage->y == DEFAULT_ZERO) { 778 hid_dbg(hdev, 779 "ignoring duplicate usage on incomplete"); 780 return; 781 } 782 usage = mt_allocate_usage(hdev, application); 783 if (!usage) 784 return; 785 786 target = (__s32 **)((char *)usage + offset); 787 } 788 789 *target = value; 790 } 791 792 #define MT_STORE_FIELD(__name) \ 793 mt_store_field(hdev, app, \ 794 &field->value[usage->usage_index], \ 795 offsetof(struct mt_usages, __name)) 796 797 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 798 struct hid_field *field, struct hid_usage *usage, 799 unsigned long **bit, int *max, struct mt_application *app) 800 { 801 struct mt_device *td = hid_get_drvdata(hdev); 802 struct mt_class *cls = &td->mtclass; 803 int code; 804 struct hid_usage *prev_usage = NULL; 805 806 /* 807 * Model touchscreens providing buttons as touchpads. 808 */ 809 if (field->application == HID_DG_TOUCHSCREEN && 810 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 811 app->mt_flags |= INPUT_MT_POINTER; 812 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 813 } 814 815 /* count the buttons on touchpads */ 816 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 817 app->buttons_count++; 818 819 if (usage->usage_index) 820 prev_usage = &field->usage[usage->usage_index - 1]; 821 822 switch (usage->hid & HID_USAGE_PAGE) { 823 824 case HID_UP_GENDESK: 825 switch (usage->hid) { 826 case HID_GD_X: 827 if (prev_usage && (prev_usage->hid == usage->hid)) { 828 code = ABS_MT_TOOL_X; 829 MT_STORE_FIELD(cx); 830 } else { 831 code = ABS_MT_POSITION_X; 832 MT_STORE_FIELD(x); 833 } 834 835 set_abs(hi->input, code, field, cls->sn_move); 836 837 /* 838 * A system multi-axis that exports X and Y has a high 839 * chance of being used directly on a surface 840 */ 841 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 842 __set_bit(INPUT_PROP_DIRECT, 843 hi->input->propbit); 844 input_set_abs_params(hi->input, 845 ABS_MT_TOOL_TYPE, 846 MT_TOOL_DIAL, 847 MT_TOOL_DIAL, 0, 0); 848 } 849 850 return 1; 851 case HID_GD_Y: 852 if (prev_usage && (prev_usage->hid == usage->hid)) { 853 code = ABS_MT_TOOL_Y; 854 MT_STORE_FIELD(cy); 855 } else { 856 code = ABS_MT_POSITION_Y; 857 MT_STORE_FIELD(y); 858 } 859 860 set_abs(hi->input, code, field, cls->sn_move); 861 862 return 1; 863 } 864 return 0; 865 866 case HID_UP_DIGITIZER: 867 switch (usage->hid) { 868 case HID_DG_INRANGE: 869 if (app->quirks & MT_QUIRK_HOVERING) { 870 input_set_abs_params(hi->input, 871 ABS_MT_DISTANCE, 0, 1, 0, 0); 872 } 873 MT_STORE_FIELD(inrange_state); 874 return 1; 875 case HID_DG_CONFIDENCE: 876 if ((cls->name == MT_CLS_WIN_8 || 877 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 878 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 879 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP || 880 cls->name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE) && 881 (field->application == HID_DG_TOUCHPAD || 882 field->application == HID_DG_TOUCHSCREEN)) 883 app->quirks |= MT_QUIRK_CONFIDENCE; 884 885 if (app->quirks & MT_QUIRK_CONFIDENCE) 886 input_set_abs_params(hi->input, 887 ABS_MT_TOOL_TYPE, 888 MT_TOOL_FINGER, 889 MT_TOOL_PALM, 0, 0); 890 891 MT_STORE_FIELD(confidence_state); 892 return 1; 893 case HID_DG_TOUCH: 894 /* 895 * Legacy devices use TIPSWITCH and not TOUCH. 896 * One special case here is of the Apple Touch Bars. 897 * In these devices, the tip state is contained in 898 * fields with the HID_DG_TOUCH usage. 899 * Let's just ignore this field for other devices. 900 */ 901 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 902 return -1; 903 fallthrough; 904 case HID_DG_TIPSWITCH: 905 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 906 input_set_capability(hi->input, 907 EV_KEY, BTN_TOUCH); 908 MT_STORE_FIELD(tip_state); 909 return 1; 910 case HID_DG_TRANSDUCER_INDEX: 911 /* 912 * Contact ID in case of Apple Touch Bars is contained 913 * in fields with HID_DG_TRANSDUCER_INDEX usage. 914 */ 915 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 916 return 0; 917 fallthrough; 918 case HID_DG_CONTACTID: 919 MT_STORE_FIELD(contactid); 920 app->touches_by_report++; 921 return 1; 922 case HID_DG_WIDTH: 923 if (!(app->quirks & MT_QUIRK_NO_AREA)) 924 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 925 cls->sn_width); 926 MT_STORE_FIELD(w); 927 return 1; 928 case HID_DG_HEIGHT: 929 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 930 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 931 cls->sn_height); 932 933 /* 934 * Only set ABS_MT_ORIENTATION if it is not 935 * already set by the HID_DG_AZIMUTH usage. 936 */ 937 if (!test_bit(ABS_MT_ORIENTATION, 938 hi->input->absbit)) 939 input_set_abs_params(hi->input, 940 ABS_MT_ORIENTATION, 0, 1, 0, 0); 941 } 942 MT_STORE_FIELD(h); 943 return 1; 944 case HID_DG_TIPPRESSURE: 945 set_abs(hi->input, ABS_MT_PRESSURE, field, 946 cls->sn_pressure); 947 td->is_haptic_touchpad = 948 hid_haptic_check_pressure_unit(td->haptic, 949 hi, field); 950 MT_STORE_FIELD(p); 951 return 1; 952 case HID_DG_SCANTIME: 953 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 954 app->scantime = &field->value[usage->usage_index]; 955 app->scantime_logical_max = field->logical_maximum; 956 return 1; 957 case HID_DG_CONTACTCOUNT: 958 app->have_contact_count = true; 959 app->raw_cc = &field->value[usage->usage_index]; 960 return 1; 961 case HID_DG_AZIMUTH: 962 /* 963 * Azimuth has the range of [0, MAX) representing a full 964 * revolution. Set ABS_MT_ORIENTATION to a quarter of 965 * MAX according the definition of ABS_MT_ORIENTATION 966 */ 967 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 968 -field->logical_maximum / 4, 969 field->logical_maximum / 4, 970 cls->sn_move ? 971 field->logical_maximum / cls->sn_move : 0, 0); 972 MT_STORE_FIELD(a); 973 return 1; 974 case HID_DG_CONTACTMAX: 975 /* contact max are global to the report */ 976 return -1; 977 } 978 /* let hid-input decide for the others */ 979 return 0; 980 981 case HID_UP_BUTTON: 982 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 983 /* 984 * MS PTP spec says that external buttons left and right have 985 * usages 2 and 3. 986 */ 987 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 988 field->application == HID_DG_TOUCHPAD && 989 (usage->hid & HID_USAGE) > 1) 990 code--; 991 992 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 993 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 994 995 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 996 if (!*bit) 997 return -1; 998 input_set_capability(hi->input, EV_KEY, code); 999 return 1; 1000 1001 case 0xff000000: 1002 /* we do not want to map these: no input-oriented meaning */ 1003 return -1; 1004 } 1005 1006 return 0; 1007 } 1008 1009 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 1010 struct mt_usages *slot, 1011 struct input_dev *input) 1012 { 1013 __s32 quirks = app->quirks; 1014 1015 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 1016 return *slot->contactid; 1017 1018 if (quirks & MT_QUIRK_CYPRESS) 1019 return cypress_compute_slot(app, slot); 1020 1021 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 1022 return app->num_received; 1023 1024 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 1025 return *slot->contactid - 1; 1026 1027 return input_mt_get_slot_by_key(input, *slot->contactid); 1028 } 1029 1030 static void mt_release_pending_palms(struct mt_device *td, 1031 struct mt_application *app, 1032 struct input_dev *input) 1033 { 1034 int slotnum; 1035 bool need_sync = false; 1036 1037 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 1038 clear_bit(slotnum, app->pending_palm_slots); 1039 clear_bit(slotnum, &td->mt_io_flags); 1040 1041 input_mt_slot(input, slotnum); 1042 input_mt_report_slot_inactive(input); 1043 1044 need_sync = true; 1045 } 1046 1047 if (need_sync) { 1048 input_mt_sync_frame(input); 1049 input_sync(input); 1050 } 1051 } 1052 1053 /* 1054 * this function is called when a whole packet has been received and processed, 1055 * so that it can decide what to send to the input layer. 1056 */ 1057 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1058 struct input_dev *input) 1059 { 1060 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1061 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1062 1063 input_mt_sync_frame(input); 1064 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1065 input_sync(input); 1066 1067 mt_release_pending_palms(td, app, input); 1068 1069 app->num_received = 0; 1070 app->left_button_state = 0; 1071 if (td->is_haptic_touchpad) 1072 hid_haptic_pressure_reset(td->haptic); 1073 } 1074 1075 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1076 { 1077 long delta = value - app->prev_scantime; 1078 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1079 1080 app->jiffies = jiffies; 1081 1082 if (delta < 0) 1083 delta += app->scantime_logical_max; 1084 1085 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1086 delta *= 100; 1087 1088 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1089 /* No data received for a while, resync the timestamp. */ 1090 return 0; 1091 else 1092 return app->timestamp + delta; 1093 } 1094 1095 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1096 struct hid_usage *usage, __s32 value) 1097 { 1098 /* we will handle the hidinput part later, now remains hiddev */ 1099 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1100 hid->hiddev_hid_event(hid, field, usage, value); 1101 1102 return 1; 1103 } 1104 1105 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1106 struct mt_application *app, 1107 struct mt_usages *slot) 1108 { 1109 struct input_mt *mt = input->mt; 1110 struct hid_device *hdev = td->hdev; 1111 __s32 quirks = app->quirks; 1112 bool valid = true; 1113 bool confidence_state = true; 1114 bool inrange_state = false; 1115 int active; 1116 int slotnum; 1117 int tool = MT_TOOL_FINGER; 1118 1119 if (!slot) 1120 return -EINVAL; 1121 1122 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1123 app->num_received >= app->num_expected) 1124 return -EAGAIN; 1125 1126 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1127 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1128 valid = *slot->inrange_state; 1129 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1130 valid = *slot->tip_state; 1131 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1132 valid = *slot->confidence_state; 1133 1134 if (!valid) 1135 return 0; 1136 } 1137 1138 slotnum = mt_compute_slot(td, app, slot, input); 1139 if (slotnum < 0 || slotnum >= td->maxcontacts) 1140 return 0; 1141 1142 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1143 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1144 1145 if (input_mt_is_active(i_slot) && 1146 input_mt_is_used(mt, i_slot)) 1147 return -EAGAIN; 1148 } 1149 1150 if (quirks & MT_QUIRK_CONFIDENCE) 1151 confidence_state = *slot->confidence_state; 1152 1153 if (quirks & MT_QUIRK_HOVERING) 1154 inrange_state = *slot->inrange_state; 1155 1156 active = *slot->tip_state || inrange_state; 1157 1158 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1159 tool = MT_TOOL_DIAL; 1160 else if (unlikely(!confidence_state)) { 1161 tool = MT_TOOL_PALM; 1162 if (!active && mt && 1163 input_mt_is_active(&mt->slots[slotnum])) { 1164 /* 1165 * The non-confidence was reported for 1166 * previously valid contact that is also no 1167 * longer valid. We can't simply report 1168 * lift-off as userspace will not be aware 1169 * of non-confidence, so we need to split 1170 * it into 2 events: active MT_TOOL_PALM 1171 * and a separate liftoff. 1172 */ 1173 active = true; 1174 set_bit(slotnum, app->pending_palm_slots); 1175 } 1176 } 1177 1178 input_mt_slot(input, slotnum); 1179 input_mt_report_slot_state(input, tool, active); 1180 if (active) { 1181 /* this finger is in proximity of the sensor */ 1182 int wide = (*slot->w > *slot->h); 1183 int major = max(*slot->w, *slot->h); 1184 int minor = min(*slot->w, *slot->h); 1185 int orientation = wide; 1186 int max_azimuth; 1187 int azimuth; 1188 int x; 1189 int y; 1190 int cx; 1191 int cy; 1192 1193 if (slot->a != DEFAULT_ZERO) { 1194 /* 1195 * Azimuth is counter-clockwise and ranges from [0, MAX) 1196 * (a full revolution). Convert it to clockwise ranging 1197 * [-MAX/2, MAX/2]. 1198 * 1199 * Note that ABS_MT_ORIENTATION require us to report 1200 * the limit of [-MAX/4, MAX/4], but the value can go 1201 * out of range to [-MAX/2, MAX/2] to report an upside 1202 * down ellipsis. 1203 */ 1204 azimuth = *slot->a; 1205 max_azimuth = input_abs_get_max(input, 1206 ABS_MT_ORIENTATION); 1207 if (azimuth > max_azimuth * 2) 1208 azimuth -= max_azimuth * 4; 1209 orientation = -azimuth; 1210 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1211 orientation = -orientation; 1212 1213 } 1214 1215 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1216 /* 1217 * divided by two to match visual scale of touch 1218 * for devices with this quirk 1219 */ 1220 major = major >> 1; 1221 minor = minor >> 1; 1222 } 1223 1224 if (td->is_haptic_touchpad) 1225 hid_haptic_pressure_increase(td->haptic, *slot->p); 1226 1227 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1228 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1229 *slot->x; 1230 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1231 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1232 *slot->y; 1233 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1234 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1235 *slot->cx; 1236 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1237 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1238 *slot->cy; 1239 1240 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1241 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1242 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1243 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1244 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1245 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1246 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1247 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1248 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1249 1250 set_bit(slotnum, &td->mt_io_flags); 1251 } else { 1252 clear_bit(slotnum, &td->mt_io_flags); 1253 } 1254 1255 return 0; 1256 } 1257 1258 static void mt_process_mt_event(struct hid_device *hid, 1259 struct mt_application *app, 1260 struct hid_field *field, 1261 struct hid_usage *usage, 1262 __s32 value, 1263 bool first_packet) 1264 { 1265 __s32 quirks = app->quirks; 1266 struct input_dev *input = field->hidinput->input; 1267 1268 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1269 return; 1270 1271 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1272 1273 /* 1274 * For Win8 PTP touchpads we should only look at 1275 * non finger/touch events in the first_packet of a 1276 * (possible) multi-packet frame. 1277 */ 1278 if (!first_packet) 1279 return; 1280 1281 /* 1282 * For Win8 PTP touchpads we map both the clickpad click 1283 * and any "external" left buttons to BTN_LEFT if a 1284 * device claims to have both we need to report 1 for 1285 * BTN_LEFT if either is pressed, so we or all values 1286 * together and report the result in mt_sync_frame(). 1287 */ 1288 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1289 app->left_button_state |= value; 1290 return; 1291 } 1292 } 1293 1294 input_event(input, usage->type, usage->code, value); 1295 } 1296 1297 static void mt_touch_report(struct hid_device *hid, 1298 struct mt_report_data *rdata) 1299 { 1300 struct mt_device *td = hid_get_drvdata(hid); 1301 struct hid_report *report = rdata->report; 1302 struct mt_application *app = rdata->application; 1303 struct hid_field *field; 1304 struct input_dev *input; 1305 struct mt_usages *slot; 1306 bool first_packet; 1307 unsigned count; 1308 int r, n; 1309 int scantime = 0; 1310 int contact_count = -1; 1311 1312 /* sticky fingers release in progress, abort */ 1313 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1314 return; 1315 1316 scantime = *app->scantime; 1317 app->timestamp = mt_compute_timestamp(app, scantime); 1318 if (app->raw_cc != DEFAULT_ZERO) 1319 contact_count = *app->raw_cc; 1320 1321 /* 1322 * Includes multi-packet support where subsequent 1323 * packets are sent with zero contactcount. 1324 */ 1325 if (contact_count >= 0) { 1326 /* 1327 * For Win8 PTPs the first packet (td->num_received == 0) may 1328 * have a contactcount of 0 if there only is a button event. 1329 * We double check that this is not a continuation packet 1330 * of a possible multi-packet frame be checking that the 1331 * timestamp has changed. 1332 */ 1333 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1334 app->num_received == 0 && 1335 app->prev_scantime != scantime) 1336 app->num_expected = contact_count; 1337 /* A non 0 contact count always indicates a first packet */ 1338 else if (contact_count) 1339 app->num_expected = contact_count; 1340 } 1341 app->prev_scantime = scantime; 1342 1343 first_packet = app->num_received == 0; 1344 1345 input = report->field[0]->hidinput->input; 1346 1347 list_for_each_entry(slot, &app->mt_usages, list) { 1348 if (!mt_process_slot(td, input, app, slot)) 1349 app->num_received++; 1350 } 1351 1352 for (r = 0; r < report->maxfield; r++) { 1353 field = report->field[r]; 1354 count = field->report_count; 1355 1356 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1357 continue; 1358 1359 for (n = 0; n < count; n++) 1360 mt_process_mt_event(hid, app, field, 1361 &field->usage[n], field->value[n], 1362 first_packet); 1363 } 1364 1365 if (app->num_received >= app->num_expected) 1366 mt_sync_frame(td, app, input); 1367 1368 /* 1369 * Windows 8 specs says 2 things: 1370 * - once a contact has been reported, it has to be reported in each 1371 * subsequent report 1372 * - the report rate when fingers are present has to be at least 1373 * the refresh rate of the screen, 60 or 120 Hz 1374 * 1375 * I interprete this that the specification forces a report rate of 1376 * at least 60 Hz for a touchscreen to be certified. 1377 * Which means that if we do not get a report whithin 16 ms, either 1378 * something wrong happens, either the touchscreen forgets to send 1379 * a release. Taking a reasonable margin allows to remove issues 1380 * with USB communication or the load of the machine. 1381 * 1382 * Given that Win 8 devices are forced to send a release, this will 1383 * only affect laggish machines and the ones that have a firmware 1384 * defect. 1385 */ 1386 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1387 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1388 mod_timer(&td->release_timer, 1389 jiffies + msecs_to_jiffies(100)); 1390 else 1391 timer_delete(&td->release_timer); 1392 } 1393 1394 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1395 } 1396 1397 static int mt_touch_input_configured(struct hid_device *hdev, 1398 struct hid_input *hi, 1399 struct mt_application *app) 1400 { 1401 struct mt_device *td = hid_get_drvdata(hdev); 1402 struct mt_class *cls = &td->mtclass; 1403 struct input_dev *input = hi->input; 1404 int ret; 1405 1406 /* 1407 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1408 * but the maximum contact count is greater than the default. 1409 */ 1410 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1411 td->maxcontacts = cls->maxcontacts; 1412 1413 if (!td->maxcontacts) 1414 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1415 1416 mt_post_parse(td, app); 1417 if (td->serial_maybe) 1418 mt_post_parse_default_settings(td, app); 1419 1420 /* 1421 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1422 * but these devices are direct. 1423 */ 1424 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1425 app->mt_flags |= INPUT_MT_DIRECT; 1426 1427 if (cls->is_indirect) 1428 app->mt_flags |= INPUT_MT_POINTER; 1429 1430 if (td->is_haptic_touchpad) 1431 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1432 1433 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1434 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1435 1436 /* check for clickpads */ 1437 if ((app->mt_flags & INPUT_MT_POINTER) && 1438 (app->buttons_count == 1)) 1439 td->is_buttonpad = true; 1440 1441 if (td->is_buttonpad) 1442 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1443 if (td->is_pressurepad) 1444 __set_bit(INPUT_PROP_PRESSUREPAD, input->propbit); 1445 1446 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1447 BITS_TO_LONGS(td->maxcontacts), 1448 sizeof(long), 1449 GFP_KERNEL); 1450 if (!app->pending_palm_slots) 1451 return -ENOMEM; 1452 1453 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1454 if (ret) 1455 return ret; 1456 1457 app->mt_flags = 0; 1458 return 0; 1459 } 1460 1461 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1462 max, EV_KEY, (c)) 1463 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1464 struct hid_field *field, struct hid_usage *usage, 1465 unsigned long **bit, int *max) 1466 { 1467 struct mt_device *td = hid_get_drvdata(hdev); 1468 struct mt_application *application; 1469 struct mt_report_data *rdata; 1470 int ret; 1471 1472 rdata = mt_find_report_data(td, field->report); 1473 if (!rdata) { 1474 hid_err(hdev, "failed to allocate data for report\n"); 1475 return 0; 1476 } 1477 1478 application = rdata->application; 1479 1480 /* 1481 * If mtclass.export_all_inputs is not set, only map fields from 1482 * TouchScreen or TouchPad collections. We need to ignore fields 1483 * that belong to other collections such as Mouse that might have 1484 * the same GenericDesktop usages. 1485 */ 1486 if (!td->mtclass.export_all_inputs && 1487 field->application != HID_DG_TOUCHSCREEN && 1488 field->application != HID_DG_PEN && 1489 field->application != HID_DG_TOUCHPAD && 1490 field->application != HID_GD_KEYBOARD && 1491 field->application != HID_GD_SYSTEM_CONTROL && 1492 field->application != HID_CP_CONSUMER_CONTROL && 1493 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1494 field->application != HID_GD_SYSTEM_MULTIAXIS && 1495 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1496 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1497 return -1; 1498 1499 /* 1500 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1501 * touchpad report descriptor. We need to treat these as an array to 1502 * map usages to input keys. 1503 */ 1504 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1505 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1506 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1507 set_bit(EV_REP, hi->input->evbit); 1508 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1509 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1510 switch (usage->hid & HID_USAGE) { 1511 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1512 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1513 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1514 case 0x6b: mt_map_key_clear(KEY_F21); break; 1515 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1516 default: 1517 return -1; 1518 } 1519 return 1; 1520 } 1521 1522 if (rdata->is_mt_collection) 1523 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1524 application); 1525 1526 /* 1527 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1528 * for the stylus. Overwrite the hid_input application 1529 */ 1530 if (field->physical == HID_DG_STYLUS) 1531 hi->application = HID_DG_STYLUS; 1532 1533 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1534 max); 1535 if (ret != 0) 1536 return ret; 1537 1538 /* let hid-core decide for the others */ 1539 return 0; 1540 } 1541 1542 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1543 struct hid_field *field, struct hid_usage *usage, 1544 unsigned long **bit, int *max) 1545 { 1546 struct mt_device *td = hid_get_drvdata(hdev); 1547 struct mt_report_data *rdata; 1548 1549 rdata = mt_find_report_data(td, field->report); 1550 if (rdata && rdata->is_mt_collection) { 1551 /* We own these mappings, tell hid-input to ignore them */ 1552 return -1; 1553 } 1554 1555 /* let hid-core decide for the others */ 1556 return 0; 1557 } 1558 1559 static int mt_event(struct hid_device *hid, struct hid_field *field, 1560 struct hid_usage *usage, __s32 value) 1561 { 1562 struct mt_device *td = hid_get_drvdata(hid); 1563 struct mt_report_data *rdata; 1564 1565 rdata = mt_find_report_data(td, field->report); 1566 if (rdata && rdata->is_mt_collection) 1567 return mt_touch_event(hid, field, usage, value); 1568 1569 return 0; 1570 } 1571 1572 /* 1573 * Yoga Book 9 14IAH10 descriptor fixup. 1574 * 1575 * The device includes a HID_DG_TOUCHPAD application collection designed for 1576 * the Windows inbox HID driver's Win8 PTP touchpad mode. On Linux we want 1577 * only the HID_DG_TOUCHSCREEN collections. The touchpad collection (and the 1578 * HID_DG_BUTTONTYPE and Win8 compliance blob features it contains) must be 1579 * removed so hid-multitouch does not misclassify the touchscreen nodes as 1580 * indirect buttonpads. 1581 * 1582 * The firmware also resets if any USB control request is received while the 1583 * CDC-ACM interface is initialising (~1.18 s after enumeration). Dropping 1584 * the Win8 blob and Contact Count Max feature reports prevents the 1585 * GET_REPORT calls that hid-multitouch issues at probe. 1586 */ 1587 static void mt_yogabook9_fixup(struct hid_device *hdev, __u8 *rdesc, 1588 unsigned int *size) 1589 { 1590 /* Usage Page (Digitizer), Usage (Touch Pad), Collection (Application) */ 1591 static const __u8 tp_app_hdr[] = { 0x05, 0x0d, 0x09, 0x05, 0xa1, 0x01 }; 1592 /* Vendor Usage Page 0xff00 (Win8 compliance blob header) */ 1593 static const __u8 win8_page[] = { 0x06, 0x00, 0xff }; 1594 /* Usage (Contact Count Max = 0x55) */ 1595 static const __u8 ccmax_usage[] = { 0x09, 0x55 }; 1596 unsigned int i; 1597 1598 /* 1599 * Step 1: find and remove the Touch Pad application collection. 1600 * Walk HID short items from the collection header to its matching 1601 * End Collection, then close the gap with memmove. 1602 */ 1603 for (i = 0; i + sizeof(tp_app_hdr) <= *size; i++) { 1604 if (memcmp(rdesc + i, tp_app_hdr, sizeof(tp_app_hdr)) == 0) { 1605 __u8 *start = rdesc + i; 1606 __u8 *coll_end = NULL; 1607 __u8 *p = start; 1608 unsigned int drop; 1609 int depth = 0; 1610 1611 while (p < rdesc + *size) { 1612 __u8 b = *p; 1613 int ds = b & 3; 1614 int item_len; 1615 1616 if (b == 0xfe) { /* long item */ 1617 if (p + 2 >= rdesc + *size) 1618 break; 1619 item_len = p[1] + 3; 1620 } else { 1621 item_len = (ds == 3) ? 5 : ds + 1; 1622 } 1623 if (p + item_len > rdesc + *size) 1624 break; 1625 1626 if ((b & 0xfc) == 0xa0) 1627 depth++; /* Collection */ 1628 else if (b == 0xc0) { 1629 depth--; /* End Collection */ 1630 if (depth == 0) { 1631 coll_end = p; 1632 break; 1633 } 1634 } 1635 p += item_len; 1636 } 1637 1638 if (!coll_end) { 1639 hid_err(hdev, 1640 "Yoga Book 9: Touch Pad End Collection not found\n"); 1641 break; 1642 } 1643 1644 drop = coll_end - start + 1; 1645 memmove(start, coll_end + 1, rdesc + *size - coll_end - 1); 1646 *size -= drop; 1647 hid_dbg(hdev, 1648 "Yoga Book 9: dropped Touch Pad collection (%u bytes)\n", 1649 drop); 1650 break; 1651 } 1652 } 1653 1654 /* 1655 * Step 2: neutralize Win8 compliance blob feature reports remaining 1656 * in the touchscreen collections. Change Usage Page 0xff00 to 0x0f00 1657 * so the case 0xff0000c5 branch in mt_feature_mapping() is not reached 1658 * and no GET_REPORT is issued. 1659 */ 1660 for (i = 0; i + sizeof(win8_page) <= *size; i++) { 1661 if (memcmp(rdesc + i, win8_page, sizeof(win8_page)) == 0) { 1662 rdesc[i + 2] = 0x0f; /* 0xff00 -> 0x0f00 */ 1663 hid_dbg(hdev, 1664 "Yoga Book 9: neutralized Win8 blob at offset %u\n", 1665 i); 1666 } 1667 } 1668 1669 /* 1670 * Step 3: neutralize Contact Count Max feature reports. Change usage 1671 * 0x55 (HID_DG_CONTACTMAX) to 0x00 so mt_feature_mapping() does not 1672 * issue GET_REPORT. The class maxcontacts field provides the value. 1673 */ 1674 for (i = 0; i + sizeof(ccmax_usage) <= *size; i++) { 1675 if (memcmp(rdesc + i, ccmax_usage, sizeof(ccmax_usage)) == 0) { 1676 rdesc[i + 1] = 0x00; 1677 hid_dbg(hdev, 1678 "Yoga Book 9: neutralized ContactMax at offset %u\n", 1679 i); 1680 } 1681 } 1682 1683 /* 1684 * Step 4: neutralize Surface Switch (0x57) and Button Switch (0x58) 1685 * feature report usages in the Device Configuration collection. 1686 * mt_set_modes() issues HID_REQ_SET_REPORT for these on every 1687 * input-device open/close; those repeated control requests hit the 1688 * firmware's CDC-ACM init window and trigger resets. 1689 * 1690 * Input Mode (0x52) is intentionally left intact. mt_set_modes() 1691 * sends it once at probe to set the device into touchscreen mode, 1692 * which flushes the firmware's contact buffer and clears a persistent 1693 * ghost contact (cid 2, fixed coordinates) that otherwise appears on 1694 * every enumeration. By probe time cdc_acm has already satisfied the 1695 * CDC-ACM init watchdog (~130 ms), so the single SET_REPORT for Input 1696 * Mode arrives safely after the reset window has closed. 1697 */ 1698 for (i = 0; i + 2 <= *size; i++) { 1699 if (rdesc[i] == 0x09 && 1700 (rdesc[i + 1] == 0x57 || 1701 rdesc[i + 1] == 0x58)) { 1702 hid_dbg(hdev, 1703 "Yoga Book 9: neutralized set-modes usage 0x%02x at offset %u\n", 1704 rdesc[i + 1], i); 1705 rdesc[i + 1] = 0x00; 1706 } 1707 } 1708 } 1709 1710 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1711 unsigned int *size) 1712 { 1713 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1714 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1715 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1716 if (*size < 608) { 1717 dev_info( 1718 &hdev->dev, 1719 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1720 *size); 1721 return rdesc; 1722 } 1723 1724 if (rdesc[607] == 0x15) { 1725 rdesc[607] = 0x25; 1726 dev_info( 1727 &hdev->dev, 1728 "GT7868Q report descriptor fixup is applied.\n"); 1729 } else { 1730 dev_info( 1731 &hdev->dev, 1732 "The byte is not expected for fixing the report descriptor. \ 1733 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1734 got: %x\n", 1735 rdesc[607]); 1736 } 1737 } 1738 1739 if (hdev->vendor == USB_VENDOR_ID_LENOVO && 1740 hdev->product == USB_DEVICE_ID_LENOVO_YOGABOOK9I) 1741 mt_yogabook9_fixup(hdev, rdesc, size); 1742 1743 return rdesc; 1744 } 1745 1746 static void mt_report(struct hid_device *hid, struct hid_report *report) 1747 { 1748 struct mt_device *td = hid_get_drvdata(hid); 1749 struct hid_field *field = report->field[0]; 1750 struct mt_report_data *rdata; 1751 1752 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1753 return; 1754 1755 rdata = mt_find_report_data(td, report); 1756 if (rdata && rdata->is_mt_collection) 1757 return mt_touch_report(hid, rdata); 1758 1759 /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */ 1760 if (rdata && rdata->application && 1761 (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) { 1762 1763 bool all_zero_report = true; 1764 1765 for (int f = 0; f < report->maxfield && all_zero_report; f++) { 1766 struct hid_field *fld = report->field[f]; 1767 1768 for (int i = 0; i < fld->report_count; i++) { 1769 unsigned int usage = fld->usage[i].hid; 1770 1771 if (usage == HID_DG_INRANGE || 1772 usage == HID_DG_TIPSWITCH || 1773 usage == HID_DG_BARRELSWITCH || 1774 usage == HID_DG_BARRELSWITCH2 || 1775 usage == HID_DG_CONTACTID || 1776 usage == HID_DG_TILT_X || 1777 usage == HID_DG_TILT_Y) { 1778 1779 if (fld->value[i] != 0) { 1780 all_zero_report = false; 1781 break; 1782 } 1783 } 1784 } 1785 } 1786 1787 if (all_zero_report) 1788 return; 1789 } 1790 1791 if (field && field->hidinput && field->hidinput->input) 1792 input_sync(field->hidinput->input); 1793 } 1794 1795 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1796 struct hid_field *field, 1797 struct hid_usage *usage, 1798 enum latency_mode latency, 1799 enum report_mode report_mode, 1800 bool *inputmode_found) 1801 { 1802 struct mt_device *td = hid_get_drvdata(hdev); 1803 struct mt_class *cls = &td->mtclass; 1804 struct hid_report *report = field->report; 1805 unsigned int index = usage->usage_index; 1806 char *buf; 1807 u32 report_len; 1808 int max; 1809 1810 switch (usage->hid) { 1811 case HID_DG_INPUTMODE: 1812 /* 1813 * Some elan panels wrongly declare 2 input mode features, 1814 * and silently ignore when we set the value in the second 1815 * field. Skip the second feature and hope for the best. 1816 */ 1817 if (*inputmode_found) 1818 return false; 1819 1820 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1821 report_len = hid_report_len(report); 1822 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1823 if (!buf) { 1824 hid_err(hdev, 1825 "failed to allocate buffer for report\n"); 1826 return false; 1827 } 1828 hid_hw_raw_request(hdev, report->id, buf, report_len, 1829 HID_FEATURE_REPORT, 1830 HID_REQ_GET_REPORT); 1831 kfree(buf); 1832 } 1833 1834 field->value[index] = td->inputmode_value; 1835 *inputmode_found = true; 1836 return true; 1837 1838 case HID_DG_CONTACTMAX: 1839 if (cls->maxcontacts) { 1840 max = min_t(int, field->logical_maximum, 1841 cls->maxcontacts); 1842 if (field->value[index] != max) { 1843 field->value[index] = max; 1844 return true; 1845 } 1846 } 1847 break; 1848 1849 case HID_DG_LATENCYMODE: 1850 field->value[index] = latency; 1851 return true; 1852 1853 case HID_DG_SURFACESWITCH: 1854 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1855 return true; 1856 1857 case HID_DG_BUTTONSWITCH: 1858 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1859 return true; 1860 } 1861 1862 return false; /* no need to update the report */ 1863 } 1864 1865 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1866 enum report_mode report_mode) 1867 { 1868 struct hid_report_enum *rep_enum; 1869 struct hid_report *rep; 1870 struct hid_usage *usage; 1871 int i, j; 1872 bool update_report; 1873 bool inputmode_found = false; 1874 1875 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1876 list_for_each_entry(rep, &rep_enum->report_list, list) { 1877 update_report = false; 1878 1879 for (i = 0; i < rep->maxfield; i++) { 1880 /* Ignore if report count is out of bounds. */ 1881 if (rep->field[i]->report_count < 1) 1882 continue; 1883 1884 for (j = 0; j < rep->field[i]->maxusage; j++) { 1885 usage = &rep->field[i]->usage[j]; 1886 1887 if (mt_need_to_apply_feature(hdev, 1888 rep->field[i], 1889 usage, 1890 latency, 1891 report_mode, 1892 &inputmode_found)) 1893 update_report = true; 1894 } 1895 } 1896 1897 if (update_report) 1898 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1899 } 1900 } 1901 1902 static void mt_post_parse_default_settings(struct mt_device *td, 1903 struct mt_application *app) 1904 { 1905 __s32 quirks = app->quirks; 1906 1907 /* unknown serial device needs special quirks */ 1908 if (list_is_singular(&app->mt_usages)) { 1909 quirks |= MT_QUIRK_ALWAYS_VALID; 1910 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1911 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1912 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1913 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1914 } 1915 1916 app->quirks = quirks; 1917 } 1918 1919 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1920 { 1921 if (!app->have_contact_count) 1922 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1923 } 1924 1925 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1926 { 1927 struct mt_device *td = hid_get_drvdata(hdev); 1928 const char *suffix = NULL; 1929 struct mt_report_data *rdata; 1930 struct mt_application *mt_application = NULL; 1931 struct hid_report *report; 1932 int ret; 1933 1934 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1935 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 1936 td->mtclass.name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE)) { 1937 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1938 td->is_haptic_touchpad = false; 1939 } else { 1940 td->is_haptic_touchpad = false; 1941 } 1942 1943 list_for_each_entry(report, &hi->reports, hidinput_list) { 1944 rdata = mt_find_report_data(td, report); 1945 if (!rdata) { 1946 hid_err(hdev, "failed to allocate data for report\n"); 1947 return -ENOMEM; 1948 } 1949 1950 mt_application = rdata->application; 1951 1952 if (rdata->is_mt_collection) { 1953 ret = mt_touch_input_configured(hdev, hi, 1954 mt_application); 1955 if (ret) 1956 return ret; 1957 } 1958 } 1959 1960 switch (hi->application) { 1961 case HID_GD_KEYBOARD: 1962 case HID_GD_KEYPAD: 1963 case HID_GD_MOUSE: 1964 case HID_DG_TOUCHPAD: 1965 case HID_GD_SYSTEM_CONTROL: 1966 case HID_CP_CONSUMER_CONTROL: 1967 case HID_GD_WIRELESS_RADIO_CTLS: 1968 case HID_GD_SYSTEM_MULTIAXIS: 1969 case HID_DG_PEN: 1970 /* already handled by hid core */ 1971 break; 1972 case HID_DG_TOUCHSCREEN: 1973 /* we do not set suffix = "Touchscreen" */ 1974 hi->input->name = hdev->name; 1975 break; 1976 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1977 suffix = "Custom Media Keys"; 1978 break; 1979 case HID_DG_STYLUS: 1980 /* force BTN_STYLUS to allow tablet matching in udev */ 1981 __set_bit(BTN_STYLUS, hi->input->keybit); 1982 break; 1983 default: 1984 suffix = "UNKNOWN"; 1985 break; 1986 } 1987 1988 /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */ 1989 if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) { 1990 switch (hi->report->id) { 1991 case 48: 1992 suffix = "Touchscreen Top"; 1993 break; 1994 case 56: 1995 suffix = "Touchscreen Bottom"; 1996 break; 1997 case 20: 1998 suffix = "Stylus Top"; 1999 break; 2000 case 40: 2001 suffix = "Stylus Bottom"; 2002 break; 2003 case 80: 2004 suffix = "Emulated Touchpad"; 2005 break; 2006 default: 2007 suffix = ""; 2008 break; 2009 } 2010 } 2011 2012 if (suffix) { 2013 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 2014 "%s %s", hdev->name, suffix); 2015 if (!hi->input->name) 2016 return -ENOMEM; 2017 } 2018 2019 return 0; 2020 } 2021 2022 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 2023 { 2024 if (field->usage[0].hid != usage || 2025 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 2026 return; 2027 2028 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 2029 field->flags |= HID_MAIN_ITEM_VARIABLE; 2030 } 2031 2032 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 2033 { 2034 struct hid_report *report; 2035 int i; 2036 2037 list_for_each_entry(report, 2038 &hdev->report_enum[HID_INPUT_REPORT].report_list, 2039 list) { 2040 2041 if (!report->maxfield) 2042 continue; 2043 2044 for (i = 0; i < report->maxfield; i++) 2045 if (report->field[i]->maxusage >= 1) 2046 mt_fix_const_field(report->field[i], usage); 2047 } 2048 } 2049 2050 static void mt_release_contacts(struct hid_device *hid) 2051 { 2052 struct hid_input *hidinput; 2053 struct mt_application *application; 2054 struct mt_device *td = hid_get_drvdata(hid); 2055 2056 list_for_each_entry(hidinput, &hid->inputs, list) { 2057 struct input_dev *input_dev = hidinput->input; 2058 struct input_mt *mt = input_dev->mt; 2059 int i; 2060 2061 if (mt) { 2062 for (i = 0; i < mt->num_slots; i++) { 2063 input_mt_slot(input_dev, i); 2064 input_mt_report_slot_inactive(input_dev); 2065 clear_bit(i, &td->mt_io_flags); 2066 } 2067 input_mt_sync_frame(input_dev); 2068 input_sync(input_dev); 2069 } 2070 } 2071 2072 list_for_each_entry(application, &td->applications, list) { 2073 application->num_received = 0; 2074 } 2075 } 2076 2077 static void mt_expired_timeout(struct timer_list *t) 2078 { 2079 struct mt_device *td = timer_container_of(td, t, release_timer); 2080 struct hid_device *hdev = td->hdev; 2081 2082 /* 2083 * An input report came in just before we release the sticky fingers, 2084 * it will take care of the sticky fingers. 2085 */ 2086 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 2087 return; 2088 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 2089 mt_release_contacts(hdev); 2090 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 2091 } 2092 2093 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 2094 { 2095 int ret, i; 2096 struct mt_device *td; 2097 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 2098 2099 for (i = 0; mt_classes[i].name ; i++) { 2100 if (id->driver_data == mt_classes[i].name) { 2101 mtclass = &(mt_classes[i]); 2102 break; 2103 } 2104 } 2105 2106 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 2107 if (!td) { 2108 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 2109 return -ENOMEM; 2110 } 2111 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL); 2112 if (!td->haptic) 2113 return -ENOMEM; 2114 2115 td->haptic->hdev = hdev; 2116 td->hdev = hdev; 2117 td->mtclass = *mtclass; 2118 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 2119 hid_set_drvdata(hdev, td); 2120 2121 INIT_LIST_HEAD(&td->applications); 2122 INIT_LIST_HEAD(&td->reports); 2123 2124 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 2125 td->serial_maybe = true; 2126 2127 2128 /* Orientation is inverted if the X or Y axes are 2129 * flipped, but normalized if both are inverted. 2130 */ 2131 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 2132 !((hdev->quirks & HID_QUIRK_X_INVERT) 2133 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 2134 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 2135 2136 /* This allows the driver to correctly support devices 2137 * that emit events over several HID messages. 2138 */ 2139 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 2140 2141 /* 2142 * This allows the driver to handle different input sensors 2143 * that emits events through different applications on the same HID 2144 * device. 2145 */ 2146 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 2147 2148 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 2149 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2150 2151 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 2152 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 2153 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2154 } 2155 2156 timer_setup(&td->release_timer, mt_expired_timeout, 0); 2157 2158 ret = hid_parse(hdev); 2159 if (ret != 0) 2160 return ret; 2161 2162 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 2163 !hid_find_field(hdev, HID_INPUT_REPORT, 2164 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 2165 return -ENODEV; 2166 2167 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 2168 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 2169 2170 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 2171 hdev->quirks |= HID_QUIRK_NOGET; 2172 2173 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 2174 if (ret) 2175 return ret; 2176 2177 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 2178 if (ret) 2179 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 2180 hdev->name); 2181 2182 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2183 2184 if (td->is_haptic_touchpad) { 2185 if (hid_haptic_init(hdev, &td->haptic)) { 2186 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n", 2187 hdev->name); 2188 td->is_haptic_touchpad = false; 2189 devm_kfree(&hdev->dev, td->haptic); 2190 } 2191 } else { 2192 devm_kfree(&hdev->dev, td->haptic); 2193 } 2194 2195 return 0; 2196 } 2197 2198 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 2199 { 2200 struct mt_device *td = hid_get_drvdata(hdev); 2201 2202 /* High latency is desirable for power savings during S3/S0ix */ 2203 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 2204 !hid_hw_may_wakeup(hdev)) 2205 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2206 else 2207 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 2208 2209 return 0; 2210 } 2211 2212 static int mt_reset_resume(struct hid_device *hdev) 2213 { 2214 mt_release_contacts(hdev); 2215 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2216 return 0; 2217 } 2218 2219 static int mt_resume(struct hid_device *hdev) 2220 { 2221 /* Some Elan legacy devices require SET_IDLE to be set on resume. 2222 * It should be safe to send it to other devices too. 2223 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 2224 2225 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 2226 2227 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2228 2229 return 0; 2230 } 2231 2232 static void mt_remove(struct hid_device *hdev) 2233 { 2234 struct mt_device *td = hid_get_drvdata(hdev); 2235 2236 timer_delete_sync(&td->release_timer); 2237 2238 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 2239 hid_hw_stop(hdev); 2240 } 2241 2242 static void mt_on_hid_hw_open(struct hid_device *hdev) 2243 { 2244 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2245 } 2246 2247 static void mt_on_hid_hw_close(struct hid_device *hdev) 2248 { 2249 struct mt_device *td = hid_get_drvdata(hdev); 2250 2251 if (td->mtclass.quirks & MT_QUIRK_KEEP_LATENCY_ON_CLOSE) 2252 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE); 2253 else 2254 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2255 } 2256 2257 /* 2258 * This list contains only: 2259 * - VID/PID of products not working with the default multitouch handling 2260 * - 2 generic rules. 2261 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2262 */ 2263 static const struct hid_device_id mt_devices[] = { 2264 2265 /* 3M panels */ 2266 { .driver_data = MT_CLS_3M, 2267 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2268 USB_DEVICE_ID_3M1968) }, 2269 { .driver_data = MT_CLS_3M, 2270 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2271 USB_DEVICE_ID_3M2256) }, 2272 { .driver_data = MT_CLS_3M, 2273 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2274 USB_DEVICE_ID_3M3266) }, 2275 2276 /* Anton devices */ 2277 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2278 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2279 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2280 2281 /* Asus T101HA */ 2282 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2283 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2284 USB_VENDOR_ID_ASUSTEK, 2285 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2286 2287 /* Asus T304UA */ 2288 { .driver_data = MT_CLS_ASUS, 2289 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2290 USB_VENDOR_ID_ASUSTEK, 2291 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2292 2293 /* Atmel panels */ 2294 { .driver_data = MT_CLS_SERIAL, 2295 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2296 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2297 2298 /* Baanto multitouch devices */ 2299 { .driver_data = MT_CLS_NSMU, 2300 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2301 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2302 2303 /* Cando panels */ 2304 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2305 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2306 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2307 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2308 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2309 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2310 2311 /* Chunghwa Telecom touch panels */ 2312 { .driver_data = MT_CLS_NSMU, 2313 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2314 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2315 2316 /* CJTouch panels */ 2317 { .driver_data = MT_CLS_NSMU, 2318 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2319 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2320 { .driver_data = MT_CLS_NSMU, 2321 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2322 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2323 2324 /* CVTouch panels */ 2325 { .driver_data = MT_CLS_NSMU, 2326 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2327 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2328 2329 /* eGalax devices (SAW) */ 2330 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2331 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2332 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2333 2334 /* eGalax devices (resistive) */ 2335 { .driver_data = MT_CLS_EGALAX, 2336 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2337 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2338 { .driver_data = MT_CLS_EGALAX, 2339 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2340 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2341 2342 /* eGalax devices (capacitive) */ 2343 { .driver_data = MT_CLS_EGALAX_SERIAL, 2344 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2345 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2346 { .driver_data = MT_CLS_EGALAX, 2347 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2348 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2349 { .driver_data = MT_CLS_EGALAX_SERIAL, 2350 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2351 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2352 { .driver_data = MT_CLS_EGALAX_SERIAL, 2353 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2354 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2355 { .driver_data = MT_CLS_EGALAX_SERIAL, 2356 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2357 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2358 { .driver_data = MT_CLS_EGALAX_SERIAL, 2359 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2360 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2361 { .driver_data = MT_CLS_EGALAX, 2362 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2363 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2364 { .driver_data = MT_CLS_EGALAX, 2365 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2366 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2367 { .driver_data = MT_CLS_EGALAX_SERIAL, 2368 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2369 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2370 { .driver_data = MT_CLS_EGALAX, 2371 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2372 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2373 { .driver_data = MT_CLS_EGALAX, 2374 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2375 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2376 { .driver_data = MT_CLS_EGALAX, 2377 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2378 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2379 { .driver_data = MT_CLS_EGALAX, 2380 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2381 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2382 { .driver_data = MT_CLS_EGALAX_SERIAL, 2383 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2384 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2385 { .driver_data = MT_CLS_EGALAX_SERIAL, 2386 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2387 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2388 { .driver_data = MT_CLS_EGALAX_SERIAL, 2389 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2390 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2391 { .driver_data = MT_CLS_EGALAX_SERIAL, 2392 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2393 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C000) }, 2394 { .driver_data = MT_CLS_EGALAX_P80H84, 2395 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2396 USB_VENDOR_ID_DWAV, 2397 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2398 2399 /* Elan devices */ 2400 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2401 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2402 USB_VENDOR_ID_ELAN, 0x313a) }, 2403 2404 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2405 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2406 USB_VENDOR_ID_ELAN, 0x3148) }, 2407 2408 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2409 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2410 USB_VENDOR_ID_ELAN, 0x32ae) }, 2411 2412 /* Elitegroup panel */ 2413 { .driver_data = MT_CLS_SERIAL, 2414 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2415 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2416 2417 /* Flatfrog Panels */ 2418 { .driver_data = MT_CLS_FLATFROG, 2419 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2420 USB_DEVICE_ID_MULTITOUCH_3200) }, 2421 2422 /* FocalTech Panels */ 2423 { .driver_data = MT_CLS_SERIAL, 2424 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2425 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2426 2427 /* GeneralTouch panel */ 2428 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2429 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2430 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2431 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2432 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2433 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2434 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2435 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2436 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2437 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2438 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2439 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2440 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2441 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2442 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2443 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2444 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2445 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2446 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2447 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2448 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2449 2450 /* Gametel game controller */ 2451 { .driver_data = MT_CLS_NSMU, 2452 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2453 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2454 2455 /* Goodix GT7868Q devices */ 2456 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2457 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2458 I2C_DEVICE_ID_GOODIX_01E8) }, 2459 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2460 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2461 I2C_DEVICE_ID_GOODIX_01E9) }, 2462 2463 /* GoodTouch panels */ 2464 { .driver_data = MT_CLS_NSMU, 2465 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2466 USB_DEVICE_ID_GOODTOUCH_000f) }, 2467 2468 /* Hanvon panels */ 2469 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2470 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2471 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2472 2473 /* HONOR GLO-GXXX panel */ 2474 { .driver_data = MT_CLS_VTL, 2475 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2476 0x347d, 0x7853) }, 2477 2478 /* HONOR MagicBook Art 14 touchpad */ 2479 { .driver_data = MT_CLS_VTL, 2480 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2481 0x35cc, 0x0104) }, 2482 2483 /* Ilitek dual touch panel */ 2484 { .driver_data = MT_CLS_NSMU, 2485 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2486 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2487 2488 /* LG Melfas panel */ 2489 { .driver_data = MT_CLS_LG, 2490 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2491 USB_DEVICE_ID_LG_MELFAS_MT) }, 2492 { .driver_data = MT_CLS_LG, 2493 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2494 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2495 2496 /* Lenovo X1 TAB Gen 1 */ 2497 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2498 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2499 USB_VENDOR_ID_LENOVO, 2500 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2501 2502 /* Lenovo X1 TAB Gen 2 */ 2503 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2504 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2505 USB_VENDOR_ID_LENOVO, 2506 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2507 2508 /* Lenovo X1 TAB Gen 3 */ 2509 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2510 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2511 USB_VENDOR_ID_LENOVO, 2512 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2513 2514 /* Lenovo X12 TAB Gen 1 */ 2515 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2516 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2517 USB_VENDOR_ID_LENOVO, 2518 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2519 2520 /* Lenovo X12 TAB Gen 2 */ 2521 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2522 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2523 USB_VENDOR_ID_LENOVO, 2524 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2525 2526 /* Lenovo Yoga Book 9i */ 2527 { .driver_data = MT_CLS_YOGABOOK9I, 2528 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2529 USB_VENDOR_ID_LENOVO, 2530 USB_DEVICE_ID_LENOVO_YOGABOOK9I) }, 2531 2532 /* Logitech devices */ 2533 { .driver_data = MT_CLS_NSMU, 2534 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2535 USB_VENDOR_ID_LOGITECH, 2536 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2537 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2538 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2539 USB_VENDOR_ID_LOGITECH, 2540 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2541 2542 /* MosArt panels */ 2543 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2544 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2545 USB_DEVICE_ID_ASUS_T91MT)}, 2546 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2547 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2548 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2549 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2550 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2551 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2552 2553 /* Novatek Panel */ 2554 { .driver_data = MT_CLS_NSMU, 2555 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2556 USB_DEVICE_ID_NOVATEK_PCT) }, 2557 2558 /* Ntrig Panel */ 2559 { .driver_data = MT_CLS_NSMU, 2560 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2561 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2562 2563 /* Panasonic panels */ 2564 { .driver_data = MT_CLS_PANASONIC, 2565 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2566 USB_DEVICE_ID_PANABOARD_UBT780) }, 2567 { .driver_data = MT_CLS_PANASONIC, 2568 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2569 USB_DEVICE_ID_PANABOARD_UBT880) }, 2570 2571 /* PixArt optical touch screen */ 2572 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2573 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2574 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2575 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2576 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2577 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2578 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2579 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2580 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2581 2582 /* PixCir-based panels */ 2583 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2584 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2585 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2586 2587 /* Quanta-based panels */ 2588 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2589 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2590 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2591 2592 /* Razer touchpads */ 2593 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2594 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2595 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2596 2597 /* Smart Tech panels */ 2598 { .driver_data = MT_CLS_SMART_TECH, 2599 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2600 2601 /* Stantum panels */ 2602 { .driver_data = MT_CLS_CONFIDENCE, 2603 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2604 USB_DEVICE_ID_MTP_STM)}, 2605 2606 /* Synaptics devices */ 2607 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2608 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2609 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2610 2611 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2612 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2613 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2614 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, 0xce08) }, 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, 0xce09) }, 2622 2623 /* TopSeed panels */ 2624 { .driver_data = MT_CLS_TOPSEED, 2625 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2626 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2627 2628 /* Touch International panels */ 2629 { .driver_data = MT_CLS_NSMU, 2630 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2631 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2632 2633 /* Unitec panels */ 2634 { .driver_data = MT_CLS_NSMU, 2635 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2636 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2637 { .driver_data = MT_CLS_NSMU, 2638 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2639 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2640 2641 /* Uniwill touchpads */ 2642 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2643 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2644 USB_VENDOR_ID_PIXART, 0x0255) }, 2645 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2646 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2647 USB_VENDOR_ID_PIXART, 0x0274) }, 2648 2649 /* VTL panels */ 2650 { .driver_data = MT_CLS_VTL, 2651 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2652 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2653 2654 /* Winbond Electronics Corp. */ 2655 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2656 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2657 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2658 2659 /* Wistron panels */ 2660 { .driver_data = MT_CLS_NSMU, 2661 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2662 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2663 2664 /* XAT */ 2665 { .driver_data = MT_CLS_NSMU, 2666 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2667 USB_DEVICE_ID_XAT_CSR) }, 2668 2669 /* Xiroku */ 2670 { .driver_data = MT_CLS_NSMU, 2671 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2672 USB_DEVICE_ID_XIROKU_SPX) }, 2673 { .driver_data = MT_CLS_NSMU, 2674 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2675 USB_DEVICE_ID_XIROKU_MPX) }, 2676 { .driver_data = MT_CLS_NSMU, 2677 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2678 USB_DEVICE_ID_XIROKU_CSR) }, 2679 { .driver_data = MT_CLS_NSMU, 2680 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2681 USB_DEVICE_ID_XIROKU_SPX1) }, 2682 { .driver_data = MT_CLS_NSMU, 2683 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2684 USB_DEVICE_ID_XIROKU_MPX1) }, 2685 { .driver_data = MT_CLS_NSMU, 2686 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2687 USB_DEVICE_ID_XIROKU_CSR1) }, 2688 { .driver_data = MT_CLS_NSMU, 2689 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2690 USB_DEVICE_ID_XIROKU_SPX2) }, 2691 { .driver_data = MT_CLS_NSMU, 2692 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2693 USB_DEVICE_ID_XIROKU_MPX2) }, 2694 { .driver_data = MT_CLS_NSMU, 2695 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2696 USB_DEVICE_ID_XIROKU_CSR2) }, 2697 2698 /* Apple Touch Bar */ 2699 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2700 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2701 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2702 2703 /* Google MT devices */ 2704 { .driver_data = MT_CLS_GOOGLE, 2705 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2706 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2707 { .driver_data = MT_CLS_GOOGLE, 2708 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2709 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2710 2711 /* sis */ 2712 { .driver_data = MT_CLS_SIS, 2713 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2714 HID_ANY_ID) }, 2715 2716 /* Hantick */ 2717 { .driver_data = MT_CLS_NSMU, 2718 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2719 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2720 2721 /* Generic MT device */ 2722 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2723 2724 /* Generic Win 8 certified MT device */ 2725 { .driver_data = MT_CLS_WIN_8, 2726 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2727 HID_ANY_ID, HID_ANY_ID) }, 2728 { } 2729 }; 2730 MODULE_DEVICE_TABLE(hid, mt_devices); 2731 2732 static const struct hid_usage_id mt_grabbed_usages[] = { 2733 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2734 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2735 }; 2736 2737 static struct hid_driver mt_driver = { 2738 .name = "hid-multitouch", 2739 .id_table = mt_devices, 2740 .probe = mt_probe, 2741 .remove = mt_remove, 2742 .input_mapping = mt_input_mapping, 2743 .input_mapped = mt_input_mapped, 2744 .input_configured = mt_input_configured, 2745 .feature_mapping = mt_feature_mapping, 2746 .usage_table = mt_grabbed_usages, 2747 .event = mt_event, 2748 .report_fixup = mt_report_fixup, 2749 .report = mt_report, 2750 .suspend = pm_ptr(mt_suspend), 2751 .reset_resume = pm_ptr(mt_reset_resume), 2752 .resume = pm_ptr(mt_resume), 2753 .on_hid_hw_open = mt_on_hid_hw_open, 2754 .on_hid_hw_close = mt_on_hid_hw_close, 2755 }; 2756 module_hid_driver(mt_driver); 2757