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