1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for multitouch panels 4 * 5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 8 * Copyright (c) 2012-2013 Red Hat, Inc 9 * 10 * This code is partly based on hid-egalax.c: 11 * 12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 14 * Copyright (c) 2010 Canonical, Ltd. 15 * 16 * This code is partly based on hid-3m-pct.c: 17 * 18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 20 * Copyright (c) 2010 Canonical, Ltd. 21 */ 22 23 /* 24 */ 25 26 /* 27 * This driver is regularly tested thanks to the test suite in hid-tools[1]. 28 * Please run these regression tests before patching this module so that 29 * your patch won't break existing known devices. 30 * 31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools 32 */ 33 34 #include <linux/bits.h> 35 #include <linux/device.h> 36 #include <linux/hid.h> 37 #include <linux/module.h> 38 #include <linux/slab.h> 39 #include <linux/input/mt.h> 40 #include <linux/jiffies.h> 41 #include <linux/string.h> 42 #include <linux/timer.h> 43 44 45 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 46 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 47 MODULE_DESCRIPTION("HID multitouch panels"); 48 MODULE_LICENSE("GPL"); 49 50 #include "hid-ids.h" 51 52 #include "hid-haptic.h" 53 54 /* quirks to control the device */ 55 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 56 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 57 #define MT_QUIRK_CYPRESS BIT(2) 58 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 59 #define MT_QUIRK_ALWAYS_VALID BIT(4) 60 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 61 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 62 #define MT_QUIRK_CONFIDENCE BIT(7) 63 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 64 #define MT_QUIRK_NO_AREA BIT(9) 65 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 66 #define MT_QUIRK_HOVERING BIT(11) 67 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 68 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 69 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 70 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 71 #define MT_QUIRK_STICKY_FINGERS BIT(16) 72 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 73 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 74 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 75 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 76 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 77 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 78 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 79 80 #define MT_INPUTMODE_TOUCHSCREEN 0x02 81 #define MT_INPUTMODE_TOUCHPAD 0x03 82 83 #define MT_BUTTONTYPE_CLICKPAD 0 84 85 enum latency_mode { 86 HID_LATENCY_NORMAL = 0, 87 HID_LATENCY_HIGH = 1, 88 }; 89 90 enum report_mode { 91 TOUCHPAD_REPORT_NONE = 0, 92 TOUCHPAD_REPORT_BUTTONS = BIT(0), 93 TOUCHPAD_REPORT_CONTACTS = BIT(1), 94 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 95 }; 96 97 #define MT_IO_SLOTS_MASK GENMASK(7, 0) /* reserve first 8 bits for slot tracking */ 98 #define MT_IO_FLAGS_RUNNING 32 99 100 static const bool mtrue = true; /* default for true */ 101 static const bool mfalse; /* default for false */ 102 static const __s32 mzero; /* default for 0 */ 103 104 #define DEFAULT_TRUE ((void *)&mtrue) 105 #define DEFAULT_FALSE ((void *)&mfalse) 106 #define DEFAULT_ZERO ((void *)&mzero) 107 108 struct mt_usages { 109 struct list_head list; 110 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 111 __s32 *contactid; /* the device ContactID assigned to this slot */ 112 bool *tip_state; /* is the touch valid? */ 113 bool *inrange_state; /* is the finger in proximity of the sensor? */ 114 bool *confidence_state; /* is the touch made by a finger? */ 115 }; 116 117 struct mt_application { 118 struct list_head list; 119 unsigned int application; 120 unsigned int report_id; 121 struct list_head mt_usages; /* mt usages list */ 122 123 __s32 quirks; 124 125 __s32 *scantime; /* scantime reported */ 126 __s32 scantime_logical_max; /* max value for raw scantime */ 127 128 __s32 *raw_cc; /* contact count in the report */ 129 int left_button_state; /* left button state */ 130 unsigned int mt_flags; /* flags to pass to input-mt */ 131 132 unsigned long *pending_palm_slots; /* slots where we reported palm 133 * and need to release */ 134 135 __u8 num_received; /* how many contacts we received */ 136 __u8 num_expected; /* expected last contact index */ 137 __u8 buttons_count; /* number of physical buttons per touchpad */ 138 __u8 touches_by_report; /* how many touches are present in one report: 139 * 1 means we should use a serial protocol 140 * > 1 means hybrid (multitouch) protocol 141 */ 142 143 unsigned long jiffies; /* the frame's jiffies */ 144 int timestamp; /* the timestamp to be sent */ 145 int prev_scantime; /* scantime reported previously */ 146 147 bool have_contact_count; 148 }; 149 150 struct mt_class { 151 __s32 name; /* MT_CLS */ 152 __s32 quirks; 153 __s32 sn_move; /* Signal/noise ratio for move events */ 154 __s32 sn_width; /* Signal/noise ratio for width events */ 155 __s32 sn_height; /* Signal/noise ratio for height events */ 156 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 157 __u8 maxcontacts; 158 bool is_indirect; /* true for touchpads */ 159 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 160 }; 161 162 struct mt_report_data { 163 struct list_head list; 164 struct hid_report *report; 165 struct mt_application *application; 166 bool is_mt_collection; 167 }; 168 169 struct mt_device { 170 struct mt_class mtclass; /* our mt device class */ 171 struct timer_list release_timer; /* to release sticky fingers */ 172 struct hid_haptic_device *haptic; /* haptic related configuration */ 173 struct hid_device *hdev; /* hid_device we're attached to */ 174 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_RUNNING) 175 * first 8 bits are reserved for keeping the slot 176 * states, this is fine because we only support up 177 * to 250 slots (MT_MAX_MAXCONTACT) 178 */ 179 __u8 inputmode_value; /* InputMode HID feature value */ 180 __u8 maxcontacts; 181 bool is_buttonpad; /* is this device a button pad? */ 182 bool is_haptic_touchpad; /* is this device a haptic touchpad? */ 183 bool serial_maybe; /* need to check for serial protocol */ 184 185 struct list_head applications; 186 struct list_head reports; 187 }; 188 189 static void mt_post_parse_default_settings(struct mt_device *td, 190 struct mt_application *app); 191 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 192 193 /* classes of device behavior */ 194 #define MT_CLS_DEFAULT 0x0001 195 196 #define MT_CLS_SERIAL 0x0002 197 #define MT_CLS_CONFIDENCE 0x0003 198 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 199 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 200 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 201 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 202 /* reserved 0x0008 */ 203 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 204 #define MT_CLS_NSMU 0x000a 205 /* reserved 0x0010 */ 206 /* reserved 0x0011 */ 207 #define MT_CLS_WIN_8 0x0012 208 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 209 /* reserved 0x0014 */ 210 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 211 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 212 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 213 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 214 215 /* vendor specific classes */ 216 #define MT_CLS_3M 0x0101 217 /* reserved 0x0102 */ 218 #define MT_CLS_EGALAX 0x0103 219 #define MT_CLS_EGALAX_SERIAL 0x0104 220 #define MT_CLS_TOPSEED 0x0105 221 #define MT_CLS_PANASONIC 0x0106 222 #define MT_CLS_FLATFROG 0x0107 223 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 224 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 225 #define MT_CLS_LG 0x010a 226 #define MT_CLS_ASUS 0x010b 227 #define MT_CLS_VTL 0x0110 228 #define MT_CLS_GOOGLE 0x0111 229 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 230 #define MT_CLS_SMART_TECH 0x0113 231 #define MT_CLS_APPLE_TOUCHBAR 0x0114 232 #define MT_CLS_SIS 0x0457 233 234 #define MT_DEFAULT_MAXCONTACT 10 235 #define MT_MAX_MAXCONTACT 250 236 237 /* 238 * Resync device and local timestamps after that many microseconds without 239 * receiving data. 240 */ 241 #define MAX_TIMESTAMP_INTERVAL 1000000 242 243 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 244 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 245 246 /* 247 * these device-dependent functions determine what slot corresponds 248 * to a valid contact that was just read. 249 */ 250 251 static int cypress_compute_slot(struct mt_application *application, 252 struct mt_usages *slot) 253 { 254 if (*slot->contactid != 0 || application->num_received == 0) 255 return *slot->contactid; 256 else 257 return -1; 258 } 259 260 static const struct mt_class mt_classes[] = { 261 { .name = MT_CLS_DEFAULT, 262 .quirks = MT_QUIRK_ALWAYS_VALID | 263 MT_QUIRK_CONTACT_CNT_ACCURATE }, 264 { .name = MT_CLS_NSMU, 265 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 266 { .name = MT_CLS_SERIAL, 267 .quirks = MT_QUIRK_ALWAYS_VALID}, 268 { .name = MT_CLS_CONFIDENCE, 269 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 270 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 271 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 272 MT_QUIRK_SLOT_IS_CONTACTID }, 273 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 274 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 275 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 276 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 277 .quirks = MT_QUIRK_VALID_IS_INRANGE | 278 MT_QUIRK_SLOT_IS_CONTACTID, 279 .maxcontacts = 2 }, 280 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 281 .quirks = MT_QUIRK_VALID_IS_INRANGE | 282 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 283 .maxcontacts = 2 }, 284 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 285 .quirks = MT_QUIRK_VALID_IS_INRANGE | 286 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 287 { .name = MT_CLS_WIN_8, 288 .quirks = MT_QUIRK_ALWAYS_VALID | 289 MT_QUIRK_IGNORE_DUPLICATES | 290 MT_QUIRK_HOVERING | 291 MT_QUIRK_CONTACT_CNT_ACCURATE | 292 MT_QUIRK_STICKY_FINGERS | 293 MT_QUIRK_WIN8_PTP_BUTTONS, 294 .export_all_inputs = true }, 295 { .name = MT_CLS_EXPORT_ALL_INPUTS, 296 .quirks = MT_QUIRK_ALWAYS_VALID | 297 MT_QUIRK_CONTACT_CNT_ACCURATE, 298 .export_all_inputs = true }, 299 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 300 .quirks = MT_QUIRK_ALWAYS_VALID | 301 MT_QUIRK_IGNORE_DUPLICATES | 302 MT_QUIRK_HOVERING | 303 MT_QUIRK_CONTACT_CNT_ACCURATE | 304 MT_QUIRK_STICKY_FINGERS | 305 MT_QUIRK_WIN8_PTP_BUTTONS | 306 MT_QUIRK_FORCE_MULTI_INPUT, 307 .export_all_inputs = true }, 308 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 309 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 310 MT_QUIRK_HOVERING | 311 MT_QUIRK_CONTACT_CNT_ACCURATE | 312 MT_QUIRK_STICKY_FINGERS | 313 MT_QUIRK_WIN8_PTP_BUTTONS | 314 MT_QUIRK_FORCE_MULTI_INPUT | 315 MT_QUIRK_NOT_SEEN_MEANS_UP, 316 .export_all_inputs = true }, 317 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 318 .quirks = MT_QUIRK_ALWAYS_VALID | 319 MT_QUIRK_IGNORE_DUPLICATES | 320 MT_QUIRK_HOVERING | 321 MT_QUIRK_CONTACT_CNT_ACCURATE | 322 MT_QUIRK_STICKY_FINGERS | 323 MT_QUIRK_WIN8_PTP_BUTTONS | 324 MT_QUIRK_DISABLE_WAKEUP, 325 .export_all_inputs = true }, 326 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 327 .quirks = MT_QUIRK_ALWAYS_VALID | 328 MT_QUIRK_IGNORE_DUPLICATES | 329 MT_QUIRK_HOVERING | 330 MT_QUIRK_CONTACT_CNT_ACCURATE | 331 MT_QUIRK_WIN8_PTP_BUTTONS, 332 .export_all_inputs = true }, 333 334 /* 335 * vendor specific classes 336 */ 337 { .name = MT_CLS_3M, 338 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 339 MT_QUIRK_SLOT_IS_CONTACTID | 340 MT_QUIRK_TOUCH_SIZE_SCALING, 341 .sn_move = 2048, 342 .sn_width = 128, 343 .sn_height = 128, 344 .maxcontacts = 60, 345 }, 346 { .name = MT_CLS_EGALAX, 347 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 348 MT_QUIRK_VALID_IS_INRANGE, 349 .sn_move = 4096, 350 .sn_pressure = 32, 351 }, 352 { .name = MT_CLS_EGALAX_SERIAL, 353 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 354 MT_QUIRK_ALWAYS_VALID, 355 .sn_move = 4096, 356 .sn_pressure = 32, 357 }, 358 { .name = MT_CLS_TOPSEED, 359 .quirks = MT_QUIRK_ALWAYS_VALID, 360 .is_indirect = true, 361 .maxcontacts = 2, 362 }, 363 { .name = MT_CLS_PANASONIC, 364 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 365 .maxcontacts = 4 }, 366 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 367 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 368 MT_QUIRK_VALID_IS_INRANGE | 369 MT_QUIRK_SLOT_IS_CONTACTID, 370 .maxcontacts = 2 371 }, 372 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 373 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 374 MT_QUIRK_SLOT_IS_CONTACTID 375 }, 376 377 { .name = MT_CLS_FLATFROG, 378 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 379 MT_QUIRK_NO_AREA, 380 .sn_move = 2048, 381 .maxcontacts = 40, 382 }, 383 { .name = MT_CLS_LG, 384 .quirks = MT_QUIRK_ALWAYS_VALID | 385 MT_QUIRK_FIX_CONST_CONTACT_ID | 386 MT_QUIRK_IGNORE_DUPLICATES | 387 MT_QUIRK_HOVERING | 388 MT_QUIRK_CONTACT_CNT_ACCURATE }, 389 { .name = MT_CLS_ASUS, 390 .quirks = MT_QUIRK_ALWAYS_VALID | 391 MT_QUIRK_CONTACT_CNT_ACCURATE | 392 MT_QUIRK_ASUS_CUSTOM_UP }, 393 { .name = MT_CLS_VTL, 394 .quirks = MT_QUIRK_ALWAYS_VALID | 395 MT_QUIRK_CONTACT_CNT_ACCURATE | 396 MT_QUIRK_FORCE_GET_FEATURE, 397 }, 398 { .name = MT_CLS_GOOGLE, 399 .quirks = MT_QUIRK_ALWAYS_VALID | 400 MT_QUIRK_CONTACT_CNT_ACCURATE | 401 MT_QUIRK_SLOT_IS_CONTACTID | 402 MT_QUIRK_HOVERING 403 }, 404 { .name = MT_CLS_RAZER_BLADE_STEALTH, 405 .quirks = MT_QUIRK_ALWAYS_VALID | 406 MT_QUIRK_IGNORE_DUPLICATES | 407 MT_QUIRK_HOVERING | 408 MT_QUIRK_CONTACT_CNT_ACCURATE | 409 MT_QUIRK_WIN8_PTP_BUTTONS, 410 }, 411 { .name = MT_CLS_SMART_TECH, 412 .quirks = MT_QUIRK_ALWAYS_VALID | 413 MT_QUIRK_IGNORE_DUPLICATES | 414 MT_QUIRK_CONTACT_CNT_ACCURATE | 415 MT_QUIRK_SEPARATE_APP_REPORT, 416 }, 417 { .name = MT_CLS_APPLE_TOUCHBAR, 418 .quirks = MT_QUIRK_HOVERING | 419 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 420 MT_QUIRK_APPLE_TOUCHBAR, 421 .maxcontacts = 11, 422 }, 423 { .name = MT_CLS_SIS, 424 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 425 MT_QUIRK_ALWAYS_VALID | 426 MT_QUIRK_CONTACT_CNT_ACCURATE, 427 }, 428 { } 429 }; 430 431 static ssize_t mt_show_quirks(struct device *dev, 432 struct device_attribute *attr, 433 char *buf) 434 { 435 struct hid_device *hdev = to_hid_device(dev); 436 struct mt_device *td = hid_get_drvdata(hdev); 437 438 return sprintf(buf, "%u\n", td->mtclass.quirks); 439 } 440 441 static ssize_t mt_set_quirks(struct device *dev, 442 struct device_attribute *attr, 443 const char *buf, size_t count) 444 { 445 struct hid_device *hdev = to_hid_device(dev); 446 struct mt_device *td = hid_get_drvdata(hdev); 447 struct mt_application *application; 448 449 unsigned long val; 450 451 if (kstrtoul(buf, 0, &val)) 452 return -EINVAL; 453 454 td->mtclass.quirks = val; 455 456 list_for_each_entry(application, &td->applications, list) { 457 application->quirks = val; 458 if (!application->have_contact_count) 459 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 460 } 461 462 return count; 463 } 464 465 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 466 467 static struct attribute *sysfs_attrs[] = { 468 &dev_attr_quirks.attr, 469 NULL 470 }; 471 472 static const struct attribute_group mt_attribute_group = { 473 .attrs = sysfs_attrs 474 }; 475 476 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 477 { 478 int ret; 479 u32 size = hid_report_len(report); 480 u8 *buf; 481 482 /* 483 * Do not fetch the feature report if the device has been explicitly 484 * marked as non-capable. 485 */ 486 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 487 return; 488 489 buf = hid_alloc_report_buf(report, GFP_KERNEL); 490 if (!buf) 491 return; 492 493 ret = hid_hw_raw_request(hdev, report->id, buf, size, 494 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 495 if (ret < 0) { 496 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 497 report->id); 498 } else { 499 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 500 size, 0); 501 if (ret) 502 dev_warn(&hdev->dev, "failed to report feature\n"); 503 } 504 505 kfree(buf); 506 } 507 508 static void mt_feature_mapping(struct hid_device *hdev, 509 struct hid_field *field, struct hid_usage *usage) 510 { 511 struct mt_device *td = hid_get_drvdata(hdev); 512 513 switch (usage->hid) { 514 case HID_DG_CONTACTMAX: 515 mt_get_feature(hdev, field->report); 516 517 td->maxcontacts = field->value[0]; 518 if (!td->maxcontacts && 519 field->logical_maximum <= MT_MAX_MAXCONTACT) 520 td->maxcontacts = field->logical_maximum; 521 if (td->mtclass.maxcontacts) 522 /* check if the maxcontacts is given by the class */ 523 td->maxcontacts = td->mtclass.maxcontacts; 524 525 break; 526 case HID_DG_BUTTONTYPE: 527 if (usage->usage_index >= field->report_count) { 528 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 529 break; 530 } 531 532 mt_get_feature(hdev, field->report); 533 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 534 td->is_buttonpad = true; 535 536 break; 537 case 0xff0000c5: 538 /* Retrieve the Win8 blob once to enable some devices */ 539 if (usage->usage_index == 0) 540 mt_get_feature(hdev, field->report); 541 break; 542 } 543 544 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 545 } 546 547 static void set_abs(struct input_dev *input, unsigned int code, 548 struct hid_field *field, int snratio) 549 { 550 int fmin = field->logical_minimum; 551 int fmax = field->logical_maximum; 552 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 553 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 554 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 555 } 556 557 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 558 struct mt_application *application) 559 { 560 struct mt_usages *usage; 561 562 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 563 if (!usage) 564 return NULL; 565 566 /* set some defaults so we do not need to check for null pointers */ 567 usage->x = DEFAULT_ZERO; 568 usage->y = DEFAULT_ZERO; 569 usage->cx = DEFAULT_ZERO; 570 usage->cy = DEFAULT_ZERO; 571 usage->p = DEFAULT_ZERO; 572 usage->w = DEFAULT_ZERO; 573 usage->h = DEFAULT_ZERO; 574 usage->a = DEFAULT_ZERO; 575 usage->contactid = DEFAULT_ZERO; 576 usage->tip_state = DEFAULT_FALSE; 577 usage->inrange_state = DEFAULT_FALSE; 578 usage->confidence_state = DEFAULT_TRUE; 579 580 list_add_tail(&usage->list, &application->mt_usages); 581 582 return usage; 583 } 584 585 static struct mt_application *mt_allocate_application(struct mt_device *td, 586 struct hid_report *report) 587 { 588 unsigned int application = report->application; 589 struct mt_application *mt_application; 590 591 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 592 GFP_KERNEL); 593 if (!mt_application) 594 return NULL; 595 596 mt_application->application = application; 597 INIT_LIST_HEAD(&mt_application->mt_usages); 598 599 if (application == HID_DG_TOUCHSCREEN) 600 mt_application->mt_flags |= INPUT_MT_DIRECT; 601 602 /* 603 * Model touchscreens providing buttons as touchpads. 604 */ 605 if (application == HID_DG_TOUCHPAD) { 606 mt_application->mt_flags |= INPUT_MT_POINTER; 607 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 608 } 609 610 mt_application->scantime = DEFAULT_ZERO; 611 mt_application->raw_cc = DEFAULT_ZERO; 612 mt_application->quirks = td->mtclass.quirks; 613 mt_application->report_id = report->id; 614 615 list_add_tail(&mt_application->list, &td->applications); 616 617 return mt_application; 618 } 619 620 static struct mt_application *mt_find_application(struct mt_device *td, 621 struct hid_report *report) 622 { 623 unsigned int application = report->application; 624 struct mt_application *tmp, *mt_application = NULL; 625 626 list_for_each_entry(tmp, &td->applications, list) { 627 if (application == tmp->application) { 628 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 629 tmp->report_id == report->id) { 630 mt_application = tmp; 631 break; 632 } 633 } 634 } 635 636 if (!mt_application) 637 mt_application = mt_allocate_application(td, report); 638 639 return mt_application; 640 } 641 642 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 643 struct hid_report *report) 644 { 645 struct mt_class *cls = &td->mtclass; 646 struct mt_report_data *rdata; 647 struct hid_field *field; 648 int r, n; 649 650 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 651 if (!rdata) 652 return NULL; 653 654 rdata->report = report; 655 rdata->application = mt_find_application(td, report); 656 657 if (!rdata->application) { 658 devm_kfree(&td->hdev->dev, rdata); 659 return NULL; 660 } 661 662 for (r = 0; r < report->maxfield; r++) { 663 field = report->field[r]; 664 665 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 666 continue; 667 668 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 669 for (n = 0; n < field->report_count; n++) { 670 unsigned int hid = field->usage[n].hid; 671 672 if (hid == HID_DG_CONTACTID || 673 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 674 hid == HID_DG_TRANSDUCER_INDEX)) { 675 rdata->is_mt_collection = true; 676 break; 677 } 678 } 679 } 680 } 681 682 list_add_tail(&rdata->list, &td->reports); 683 684 return rdata; 685 } 686 687 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 688 struct hid_report *report) 689 { 690 struct mt_report_data *tmp, *rdata = NULL; 691 692 list_for_each_entry(tmp, &td->reports, list) { 693 if (report == tmp->report) { 694 rdata = tmp; 695 break; 696 } 697 } 698 699 if (!rdata) 700 rdata = mt_allocate_report_data(td, report); 701 702 return rdata; 703 } 704 705 static void mt_store_field(struct hid_device *hdev, 706 struct mt_application *application, 707 __s32 *value, 708 size_t offset) 709 { 710 struct mt_usages *usage; 711 __s32 **target; 712 713 if (list_empty(&application->mt_usages)) 714 usage = mt_allocate_usage(hdev, application); 715 else 716 usage = list_last_entry(&application->mt_usages, 717 struct mt_usages, 718 list); 719 720 if (!usage) 721 return; 722 723 target = (__s32 **)((char *)usage + offset); 724 725 /* the value has already been filled, create a new slot */ 726 if (*target != DEFAULT_TRUE && 727 *target != DEFAULT_FALSE && 728 *target != DEFAULT_ZERO) { 729 if (usage->contactid == DEFAULT_ZERO || 730 usage->x == DEFAULT_ZERO || 731 usage->y == DEFAULT_ZERO) { 732 hid_dbg(hdev, 733 "ignoring duplicate usage on incomplete"); 734 return; 735 } 736 usage = mt_allocate_usage(hdev, application); 737 if (!usage) 738 return; 739 740 target = (__s32 **)((char *)usage + offset); 741 } 742 743 *target = value; 744 } 745 746 #define MT_STORE_FIELD(__name) \ 747 mt_store_field(hdev, app, \ 748 &field->value[usage->usage_index], \ 749 offsetof(struct mt_usages, __name)) 750 751 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 752 struct hid_field *field, struct hid_usage *usage, 753 unsigned long **bit, int *max, struct mt_application *app) 754 { 755 struct mt_device *td = hid_get_drvdata(hdev); 756 struct mt_class *cls = &td->mtclass; 757 int code; 758 struct hid_usage *prev_usage = NULL; 759 760 /* 761 * Model touchscreens providing buttons as touchpads. 762 */ 763 if (field->application == HID_DG_TOUCHSCREEN && 764 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 765 app->mt_flags |= INPUT_MT_POINTER; 766 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 767 } 768 769 /* count the buttons on touchpads */ 770 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 771 app->buttons_count++; 772 773 if (usage->usage_index) 774 prev_usage = &field->usage[usage->usage_index - 1]; 775 776 switch (usage->hid & HID_USAGE_PAGE) { 777 778 case HID_UP_GENDESK: 779 switch (usage->hid) { 780 case HID_GD_X: 781 if (prev_usage && (prev_usage->hid == usage->hid)) { 782 code = ABS_MT_TOOL_X; 783 MT_STORE_FIELD(cx); 784 } else { 785 code = ABS_MT_POSITION_X; 786 MT_STORE_FIELD(x); 787 } 788 789 set_abs(hi->input, code, field, cls->sn_move); 790 791 /* 792 * A system multi-axis that exports X and Y has a high 793 * chance of being used directly on a surface 794 */ 795 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 796 __set_bit(INPUT_PROP_DIRECT, 797 hi->input->propbit); 798 input_set_abs_params(hi->input, 799 ABS_MT_TOOL_TYPE, 800 MT_TOOL_DIAL, 801 MT_TOOL_DIAL, 0, 0); 802 } 803 804 return 1; 805 case HID_GD_Y: 806 if (prev_usage && (prev_usage->hid == usage->hid)) { 807 code = ABS_MT_TOOL_Y; 808 MT_STORE_FIELD(cy); 809 } else { 810 code = ABS_MT_POSITION_Y; 811 MT_STORE_FIELD(y); 812 } 813 814 set_abs(hi->input, code, field, cls->sn_move); 815 816 return 1; 817 } 818 return 0; 819 820 case HID_UP_DIGITIZER: 821 switch (usage->hid) { 822 case HID_DG_INRANGE: 823 if (app->quirks & MT_QUIRK_HOVERING) { 824 input_set_abs_params(hi->input, 825 ABS_MT_DISTANCE, 0, 1, 0, 0); 826 } 827 MT_STORE_FIELD(inrange_state); 828 return 1; 829 case HID_DG_CONFIDENCE: 830 if ((cls->name == MT_CLS_WIN_8 || 831 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 832 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 833 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 834 (field->application == HID_DG_TOUCHPAD || 835 field->application == HID_DG_TOUCHSCREEN)) 836 app->quirks |= MT_QUIRK_CONFIDENCE; 837 838 if (app->quirks & MT_QUIRK_CONFIDENCE) 839 input_set_abs_params(hi->input, 840 ABS_MT_TOOL_TYPE, 841 MT_TOOL_FINGER, 842 MT_TOOL_PALM, 0, 0); 843 844 MT_STORE_FIELD(confidence_state); 845 return 1; 846 case HID_DG_TOUCH: 847 /* 848 * Legacy devices use TIPSWITCH and not TOUCH. 849 * One special case here is of the Apple Touch Bars. 850 * In these devices, the tip state is contained in 851 * fields with the HID_DG_TOUCH usage. 852 * Let's just ignore this field for other devices. 853 */ 854 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 855 return -1; 856 fallthrough; 857 case HID_DG_TIPSWITCH: 858 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 859 input_set_capability(hi->input, 860 EV_KEY, BTN_TOUCH); 861 MT_STORE_FIELD(tip_state); 862 return 1; 863 case HID_DG_TRANSDUCER_INDEX: 864 /* 865 * Contact ID in case of Apple Touch Bars is contained 866 * in fields with HID_DG_TRANSDUCER_INDEX usage. 867 */ 868 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 869 return 0; 870 fallthrough; 871 case HID_DG_CONTACTID: 872 MT_STORE_FIELD(contactid); 873 app->touches_by_report++; 874 return 1; 875 case HID_DG_WIDTH: 876 if (!(app->quirks & MT_QUIRK_NO_AREA)) 877 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 878 cls->sn_width); 879 MT_STORE_FIELD(w); 880 return 1; 881 case HID_DG_HEIGHT: 882 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 883 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 884 cls->sn_height); 885 886 /* 887 * Only set ABS_MT_ORIENTATION if it is not 888 * already set by the HID_DG_AZIMUTH usage. 889 */ 890 if (!test_bit(ABS_MT_ORIENTATION, 891 hi->input->absbit)) 892 input_set_abs_params(hi->input, 893 ABS_MT_ORIENTATION, 0, 1, 0, 0); 894 } 895 MT_STORE_FIELD(h); 896 return 1; 897 case HID_DG_TIPPRESSURE: 898 set_abs(hi->input, ABS_MT_PRESSURE, field, 899 cls->sn_pressure); 900 td->is_haptic_touchpad = 901 hid_haptic_check_pressure_unit(td->haptic, 902 hi, field); 903 MT_STORE_FIELD(p); 904 return 1; 905 case HID_DG_SCANTIME: 906 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 907 app->scantime = &field->value[usage->usage_index]; 908 app->scantime_logical_max = field->logical_maximum; 909 return 1; 910 case HID_DG_CONTACTCOUNT: 911 app->have_contact_count = true; 912 app->raw_cc = &field->value[usage->usage_index]; 913 return 1; 914 case HID_DG_AZIMUTH: 915 /* 916 * Azimuth has the range of [0, MAX) representing a full 917 * revolution. Set ABS_MT_ORIENTATION to a quarter of 918 * MAX according the definition of ABS_MT_ORIENTATION 919 */ 920 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 921 -field->logical_maximum / 4, 922 field->logical_maximum / 4, 923 cls->sn_move ? 924 field->logical_maximum / cls->sn_move : 0, 0); 925 MT_STORE_FIELD(a); 926 return 1; 927 case HID_DG_CONTACTMAX: 928 /* contact max are global to the report */ 929 return -1; 930 } 931 /* let hid-input decide for the others */ 932 return 0; 933 934 case HID_UP_BUTTON: 935 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 936 /* 937 * MS PTP spec says that external buttons left and right have 938 * usages 2 and 3. 939 */ 940 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 941 field->application == HID_DG_TOUCHPAD && 942 (usage->hid & HID_USAGE) > 1) 943 code--; 944 945 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 946 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 947 948 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 949 if (!*bit) 950 return -1; 951 input_set_capability(hi->input, EV_KEY, code); 952 return 1; 953 954 case 0xff000000: 955 /* we do not want to map these: no input-oriented meaning */ 956 return -1; 957 } 958 959 return 0; 960 } 961 962 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 963 struct mt_usages *slot, 964 struct input_dev *input) 965 { 966 __s32 quirks = app->quirks; 967 968 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 969 return *slot->contactid; 970 971 if (quirks & MT_QUIRK_CYPRESS) 972 return cypress_compute_slot(app, slot); 973 974 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 975 return app->num_received; 976 977 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 978 return *slot->contactid - 1; 979 980 return input_mt_get_slot_by_key(input, *slot->contactid); 981 } 982 983 static void mt_release_pending_palms(struct mt_device *td, 984 struct mt_application *app, 985 struct input_dev *input) 986 { 987 int slotnum; 988 bool need_sync = false; 989 990 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 991 clear_bit(slotnum, app->pending_palm_slots); 992 clear_bit(slotnum, &td->mt_io_flags); 993 994 input_mt_slot(input, slotnum); 995 input_mt_report_slot_inactive(input); 996 997 need_sync = true; 998 } 999 1000 if (need_sync) { 1001 input_mt_sync_frame(input); 1002 input_sync(input); 1003 } 1004 } 1005 1006 /* 1007 * this function is called when a whole packet has been received and processed, 1008 * so that it can decide what to send to the input layer. 1009 */ 1010 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1011 struct input_dev *input) 1012 { 1013 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1014 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1015 1016 input_mt_sync_frame(input); 1017 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1018 input_sync(input); 1019 1020 mt_release_pending_palms(td, app, input); 1021 1022 app->num_received = 0; 1023 app->left_button_state = 0; 1024 if (td->is_haptic_touchpad) 1025 hid_haptic_pressure_reset(td->haptic); 1026 } 1027 1028 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1029 { 1030 long delta = value - app->prev_scantime; 1031 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1032 1033 app->jiffies = jiffies; 1034 1035 if (delta < 0) 1036 delta += app->scantime_logical_max; 1037 1038 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1039 delta *= 100; 1040 1041 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1042 /* No data received for a while, resync the timestamp. */ 1043 return 0; 1044 else 1045 return app->timestamp + delta; 1046 } 1047 1048 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1049 struct hid_usage *usage, __s32 value) 1050 { 1051 /* we will handle the hidinput part later, now remains hiddev */ 1052 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1053 hid->hiddev_hid_event(hid, field, usage, value); 1054 1055 return 1; 1056 } 1057 1058 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1059 struct mt_application *app, 1060 struct mt_usages *slot) 1061 { 1062 struct input_mt *mt = input->mt; 1063 struct hid_device *hdev = td->hdev; 1064 __s32 quirks = app->quirks; 1065 bool valid = true; 1066 bool confidence_state = true; 1067 bool inrange_state = false; 1068 int active; 1069 int slotnum; 1070 int tool = MT_TOOL_FINGER; 1071 1072 if (!slot) 1073 return -EINVAL; 1074 1075 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1076 app->num_received >= app->num_expected) 1077 return -EAGAIN; 1078 1079 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1080 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1081 valid = *slot->inrange_state; 1082 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1083 valid = *slot->tip_state; 1084 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1085 valid = *slot->confidence_state; 1086 1087 if (!valid) 1088 return 0; 1089 } 1090 1091 slotnum = mt_compute_slot(td, app, slot, input); 1092 if (slotnum < 0 || slotnum >= td->maxcontacts) 1093 return 0; 1094 1095 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1096 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1097 1098 if (input_mt_is_active(i_slot) && 1099 input_mt_is_used(mt, i_slot)) 1100 return -EAGAIN; 1101 } 1102 1103 if (quirks & MT_QUIRK_CONFIDENCE) 1104 confidence_state = *slot->confidence_state; 1105 1106 if (quirks & MT_QUIRK_HOVERING) 1107 inrange_state = *slot->inrange_state; 1108 1109 active = *slot->tip_state || inrange_state; 1110 1111 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1112 tool = MT_TOOL_DIAL; 1113 else if (unlikely(!confidence_state)) { 1114 tool = MT_TOOL_PALM; 1115 if (!active && mt && 1116 input_mt_is_active(&mt->slots[slotnum])) { 1117 /* 1118 * The non-confidence was reported for 1119 * previously valid contact that is also no 1120 * longer valid. We can't simply report 1121 * lift-off as userspace will not be aware 1122 * of non-confidence, so we need to split 1123 * it into 2 events: active MT_TOOL_PALM 1124 * and a separate liftoff. 1125 */ 1126 active = true; 1127 set_bit(slotnum, app->pending_palm_slots); 1128 } 1129 } 1130 1131 input_mt_slot(input, slotnum); 1132 input_mt_report_slot_state(input, tool, active); 1133 if (active) { 1134 /* this finger is in proximity of the sensor */ 1135 int wide = (*slot->w > *slot->h); 1136 int major = max(*slot->w, *slot->h); 1137 int minor = min(*slot->w, *slot->h); 1138 int orientation = wide; 1139 int max_azimuth; 1140 int azimuth; 1141 int x; 1142 int y; 1143 int cx; 1144 int cy; 1145 1146 if (slot->a != DEFAULT_ZERO) { 1147 /* 1148 * Azimuth is counter-clockwise and ranges from [0, MAX) 1149 * (a full revolution). Convert it to clockwise ranging 1150 * [-MAX/2, MAX/2]. 1151 * 1152 * Note that ABS_MT_ORIENTATION require us to report 1153 * the limit of [-MAX/4, MAX/4], but the value can go 1154 * out of range to [-MAX/2, MAX/2] to report an upside 1155 * down ellipsis. 1156 */ 1157 azimuth = *slot->a; 1158 max_azimuth = input_abs_get_max(input, 1159 ABS_MT_ORIENTATION); 1160 if (azimuth > max_azimuth * 2) 1161 azimuth -= max_azimuth * 4; 1162 orientation = -azimuth; 1163 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1164 orientation = -orientation; 1165 1166 } 1167 1168 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1169 /* 1170 * divided by two to match visual scale of touch 1171 * for devices with this quirk 1172 */ 1173 major = major >> 1; 1174 minor = minor >> 1; 1175 } 1176 1177 if (td->is_haptic_touchpad) 1178 hid_haptic_pressure_increase(td->haptic, *slot->p); 1179 1180 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1181 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1182 *slot->x; 1183 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1184 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1185 *slot->y; 1186 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1187 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1188 *slot->cx; 1189 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1190 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1191 *slot->cy; 1192 1193 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1194 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1195 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1196 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1197 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1198 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1199 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1200 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1201 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1202 1203 set_bit(slotnum, &td->mt_io_flags); 1204 } else { 1205 clear_bit(slotnum, &td->mt_io_flags); 1206 } 1207 1208 return 0; 1209 } 1210 1211 static void mt_process_mt_event(struct hid_device *hid, 1212 struct mt_application *app, 1213 struct hid_field *field, 1214 struct hid_usage *usage, 1215 __s32 value, 1216 bool first_packet) 1217 { 1218 __s32 quirks = app->quirks; 1219 struct input_dev *input = field->hidinput->input; 1220 1221 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1222 return; 1223 1224 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1225 1226 /* 1227 * For Win8 PTP touchpads we should only look at 1228 * non finger/touch events in the first_packet of a 1229 * (possible) multi-packet frame. 1230 */ 1231 if (!first_packet) 1232 return; 1233 1234 /* 1235 * For Win8 PTP touchpads we map both the clickpad click 1236 * and any "external" left buttons to BTN_LEFT if a 1237 * device claims to have both we need to report 1 for 1238 * BTN_LEFT if either is pressed, so we or all values 1239 * together and report the result in mt_sync_frame(). 1240 */ 1241 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1242 app->left_button_state |= value; 1243 return; 1244 } 1245 } 1246 1247 input_event(input, usage->type, usage->code, value); 1248 } 1249 1250 static void mt_touch_report(struct hid_device *hid, 1251 struct mt_report_data *rdata) 1252 { 1253 struct mt_device *td = hid_get_drvdata(hid); 1254 struct hid_report *report = rdata->report; 1255 struct mt_application *app = rdata->application; 1256 struct hid_field *field; 1257 struct input_dev *input; 1258 struct mt_usages *slot; 1259 bool first_packet; 1260 unsigned count; 1261 int r, n; 1262 int scantime = 0; 1263 int contact_count = -1; 1264 1265 /* sticky fingers release in progress, abort */ 1266 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1267 return; 1268 1269 scantime = *app->scantime; 1270 app->timestamp = mt_compute_timestamp(app, scantime); 1271 if (app->raw_cc != DEFAULT_ZERO) 1272 contact_count = *app->raw_cc; 1273 1274 /* 1275 * Includes multi-packet support where subsequent 1276 * packets are sent with zero contactcount. 1277 */ 1278 if (contact_count >= 0) { 1279 /* 1280 * For Win8 PTPs the first packet (td->num_received == 0) may 1281 * have a contactcount of 0 if there only is a button event. 1282 * We double check that this is not a continuation packet 1283 * of a possible multi-packet frame be checking that the 1284 * timestamp has changed. 1285 */ 1286 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1287 app->num_received == 0 && 1288 app->prev_scantime != scantime) 1289 app->num_expected = contact_count; 1290 /* A non 0 contact count always indicates a first packet */ 1291 else if (contact_count) 1292 app->num_expected = contact_count; 1293 } 1294 app->prev_scantime = scantime; 1295 1296 first_packet = app->num_received == 0; 1297 1298 input = report->field[0]->hidinput->input; 1299 1300 list_for_each_entry(slot, &app->mt_usages, list) { 1301 if (!mt_process_slot(td, input, app, slot)) 1302 app->num_received++; 1303 } 1304 1305 for (r = 0; r < report->maxfield; r++) { 1306 field = report->field[r]; 1307 count = field->report_count; 1308 1309 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1310 continue; 1311 1312 for (n = 0; n < count; n++) 1313 mt_process_mt_event(hid, app, field, 1314 &field->usage[n], field->value[n], 1315 first_packet); 1316 } 1317 1318 if (app->num_received >= app->num_expected) 1319 mt_sync_frame(td, app, input); 1320 1321 /* 1322 * Windows 8 specs says 2 things: 1323 * - once a contact has been reported, it has to be reported in each 1324 * subsequent report 1325 * - the report rate when fingers are present has to be at least 1326 * the refresh rate of the screen, 60 or 120 Hz 1327 * 1328 * I interprete this that the specification forces a report rate of 1329 * at least 60 Hz for a touchscreen to be certified. 1330 * Which means that if we do not get a report whithin 16 ms, either 1331 * something wrong happens, either the touchscreen forgets to send 1332 * a release. Taking a reasonable margin allows to remove issues 1333 * with USB communication or the load of the machine. 1334 * 1335 * Given that Win 8 devices are forced to send a release, this will 1336 * only affect laggish machines and the ones that have a firmware 1337 * defect. 1338 */ 1339 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1340 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1341 mod_timer(&td->release_timer, 1342 jiffies + msecs_to_jiffies(100)); 1343 else 1344 timer_delete(&td->release_timer); 1345 } 1346 1347 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1348 } 1349 1350 static int mt_touch_input_configured(struct hid_device *hdev, 1351 struct hid_input *hi, 1352 struct mt_application *app) 1353 { 1354 struct mt_device *td = hid_get_drvdata(hdev); 1355 struct mt_class *cls = &td->mtclass; 1356 struct input_dev *input = hi->input; 1357 int ret; 1358 1359 /* 1360 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1361 * but the maximum contact count is greater than the default. 1362 */ 1363 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1364 td->maxcontacts = cls->maxcontacts; 1365 1366 if (!td->maxcontacts) 1367 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1368 1369 mt_post_parse(td, app); 1370 if (td->serial_maybe) 1371 mt_post_parse_default_settings(td, app); 1372 1373 /* 1374 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1375 * but these devices are direct. 1376 */ 1377 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1378 app->mt_flags |= INPUT_MT_DIRECT; 1379 1380 if (cls->is_indirect) 1381 app->mt_flags |= INPUT_MT_POINTER; 1382 1383 if (td->is_haptic_touchpad) 1384 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1385 1386 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1387 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1388 1389 /* check for clickpads */ 1390 if ((app->mt_flags & INPUT_MT_POINTER) && 1391 (app->buttons_count == 1)) 1392 td->is_buttonpad = true; 1393 1394 if (td->is_buttonpad) 1395 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1396 1397 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1398 BITS_TO_LONGS(td->maxcontacts), 1399 sizeof(long), 1400 GFP_KERNEL); 1401 if (!app->pending_palm_slots) 1402 return -ENOMEM; 1403 1404 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1405 if (ret) 1406 return ret; 1407 1408 app->mt_flags = 0; 1409 return 0; 1410 } 1411 1412 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1413 max, EV_KEY, (c)) 1414 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1415 struct hid_field *field, struct hid_usage *usage, 1416 unsigned long **bit, int *max) 1417 { 1418 struct mt_device *td = hid_get_drvdata(hdev); 1419 struct mt_application *application; 1420 struct mt_report_data *rdata; 1421 int ret; 1422 1423 rdata = mt_find_report_data(td, field->report); 1424 if (!rdata) { 1425 hid_err(hdev, "failed to allocate data for report\n"); 1426 return 0; 1427 } 1428 1429 application = rdata->application; 1430 1431 /* 1432 * If mtclass.export_all_inputs is not set, only map fields from 1433 * TouchScreen or TouchPad collections. We need to ignore fields 1434 * that belong to other collections such as Mouse that might have 1435 * the same GenericDesktop usages. 1436 */ 1437 if (!td->mtclass.export_all_inputs && 1438 field->application != HID_DG_TOUCHSCREEN && 1439 field->application != HID_DG_PEN && 1440 field->application != HID_DG_TOUCHPAD && 1441 field->application != HID_GD_KEYBOARD && 1442 field->application != HID_GD_SYSTEM_CONTROL && 1443 field->application != HID_CP_CONSUMER_CONTROL && 1444 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1445 field->application != HID_GD_SYSTEM_MULTIAXIS && 1446 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1447 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1448 return -1; 1449 1450 /* 1451 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1452 * touchpad report descriptor. We need to treat these as an array to 1453 * map usages to input keys. 1454 */ 1455 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1456 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1457 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1458 set_bit(EV_REP, hi->input->evbit); 1459 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1460 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1461 switch (usage->hid & HID_USAGE) { 1462 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1463 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1464 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1465 case 0x6b: mt_map_key_clear(KEY_F21); break; 1466 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1467 default: 1468 return -1; 1469 } 1470 return 1; 1471 } 1472 1473 if (rdata->is_mt_collection) 1474 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1475 application); 1476 1477 /* 1478 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1479 * for the stylus. Overwrite the hid_input application 1480 */ 1481 if (field->physical == HID_DG_STYLUS) 1482 hi->application = HID_DG_STYLUS; 1483 1484 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1485 max); 1486 if (ret != 0) 1487 return ret; 1488 1489 /* let hid-core decide for the others */ 1490 return 0; 1491 } 1492 1493 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1494 struct hid_field *field, struct hid_usage *usage, 1495 unsigned long **bit, int *max) 1496 { 1497 struct mt_device *td = hid_get_drvdata(hdev); 1498 struct mt_report_data *rdata; 1499 1500 rdata = mt_find_report_data(td, field->report); 1501 if (rdata && rdata->is_mt_collection) { 1502 /* We own these mappings, tell hid-input to ignore them */ 1503 return -1; 1504 } 1505 1506 /* let hid-core decide for the others */ 1507 return 0; 1508 } 1509 1510 static int mt_event(struct hid_device *hid, struct hid_field *field, 1511 struct hid_usage *usage, __s32 value) 1512 { 1513 struct mt_device *td = hid_get_drvdata(hid); 1514 struct mt_report_data *rdata; 1515 1516 rdata = mt_find_report_data(td, field->report); 1517 if (rdata && rdata->is_mt_collection) 1518 return mt_touch_event(hid, field, usage, value); 1519 1520 return 0; 1521 } 1522 1523 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1524 unsigned int *size) 1525 { 1526 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1527 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1528 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1529 if (*size < 608) { 1530 dev_info( 1531 &hdev->dev, 1532 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1533 *size); 1534 return rdesc; 1535 } 1536 1537 if (rdesc[607] == 0x15) { 1538 rdesc[607] = 0x25; 1539 dev_info( 1540 &hdev->dev, 1541 "GT7868Q report descriptor fixup is applied.\n"); 1542 } else { 1543 dev_info( 1544 &hdev->dev, 1545 "The byte is not expected for fixing the report descriptor. \ 1546 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1547 got: %x\n", 1548 rdesc[607]); 1549 } 1550 } 1551 1552 return rdesc; 1553 } 1554 1555 static void mt_report(struct hid_device *hid, struct hid_report *report) 1556 { 1557 struct mt_device *td = hid_get_drvdata(hid); 1558 struct hid_field *field = report->field[0]; 1559 struct mt_report_data *rdata; 1560 1561 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1562 return; 1563 1564 rdata = mt_find_report_data(td, report); 1565 if (rdata && rdata->is_mt_collection) 1566 return mt_touch_report(hid, rdata); 1567 1568 if (field && field->hidinput && field->hidinput->input) 1569 input_sync(field->hidinput->input); 1570 } 1571 1572 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1573 struct hid_field *field, 1574 struct hid_usage *usage, 1575 enum latency_mode latency, 1576 enum report_mode report_mode, 1577 bool *inputmode_found) 1578 { 1579 struct mt_device *td = hid_get_drvdata(hdev); 1580 struct mt_class *cls = &td->mtclass; 1581 struct hid_report *report = field->report; 1582 unsigned int index = usage->usage_index; 1583 char *buf; 1584 u32 report_len; 1585 int max; 1586 1587 switch (usage->hid) { 1588 case HID_DG_INPUTMODE: 1589 /* 1590 * Some elan panels wrongly declare 2 input mode features, 1591 * and silently ignore when we set the value in the second 1592 * field. Skip the second feature and hope for the best. 1593 */ 1594 if (*inputmode_found) 1595 return false; 1596 1597 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1598 report_len = hid_report_len(report); 1599 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1600 if (!buf) { 1601 hid_err(hdev, 1602 "failed to allocate buffer for report\n"); 1603 return false; 1604 } 1605 hid_hw_raw_request(hdev, report->id, buf, report_len, 1606 HID_FEATURE_REPORT, 1607 HID_REQ_GET_REPORT); 1608 kfree(buf); 1609 } 1610 1611 field->value[index] = td->inputmode_value; 1612 *inputmode_found = true; 1613 return true; 1614 1615 case HID_DG_CONTACTMAX: 1616 if (cls->maxcontacts) { 1617 max = min_t(int, field->logical_maximum, 1618 cls->maxcontacts); 1619 if (field->value[index] != max) { 1620 field->value[index] = max; 1621 return true; 1622 } 1623 } 1624 break; 1625 1626 case HID_DG_LATENCYMODE: 1627 field->value[index] = latency; 1628 return true; 1629 1630 case HID_DG_SURFACESWITCH: 1631 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1632 return true; 1633 1634 case HID_DG_BUTTONSWITCH: 1635 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1636 return true; 1637 } 1638 1639 return false; /* no need to update the report */ 1640 } 1641 1642 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1643 enum report_mode report_mode) 1644 { 1645 struct hid_report_enum *rep_enum; 1646 struct hid_report *rep; 1647 struct hid_usage *usage; 1648 int i, j; 1649 bool update_report; 1650 bool inputmode_found = false; 1651 1652 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1653 list_for_each_entry(rep, &rep_enum->report_list, list) { 1654 update_report = false; 1655 1656 for (i = 0; i < rep->maxfield; i++) { 1657 /* Ignore if report count is out of bounds. */ 1658 if (rep->field[i]->report_count < 1) 1659 continue; 1660 1661 for (j = 0; j < rep->field[i]->maxusage; j++) { 1662 usage = &rep->field[i]->usage[j]; 1663 1664 if (mt_need_to_apply_feature(hdev, 1665 rep->field[i], 1666 usage, 1667 latency, 1668 report_mode, 1669 &inputmode_found)) 1670 update_report = true; 1671 } 1672 } 1673 1674 if (update_report) 1675 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1676 } 1677 } 1678 1679 static void mt_post_parse_default_settings(struct mt_device *td, 1680 struct mt_application *app) 1681 { 1682 __s32 quirks = app->quirks; 1683 1684 /* unknown serial device needs special quirks */ 1685 if (list_is_singular(&app->mt_usages)) { 1686 quirks |= MT_QUIRK_ALWAYS_VALID; 1687 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1688 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1689 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1690 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1691 } 1692 1693 app->quirks = quirks; 1694 } 1695 1696 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1697 { 1698 if (!app->have_contact_count) 1699 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1700 } 1701 1702 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1703 { 1704 struct mt_device *td = hid_get_drvdata(hdev); 1705 const char *suffix = NULL; 1706 struct mt_report_data *rdata; 1707 struct mt_application *mt_application = NULL; 1708 struct hid_report *report; 1709 int ret; 1710 1711 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1712 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT)) { 1713 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1714 td->is_haptic_touchpad = false; 1715 } else { 1716 td->is_haptic_touchpad = false; 1717 } 1718 1719 list_for_each_entry(report, &hi->reports, hidinput_list) { 1720 rdata = mt_find_report_data(td, report); 1721 if (!rdata) { 1722 hid_err(hdev, "failed to allocate data for report\n"); 1723 return -ENOMEM; 1724 } 1725 1726 mt_application = rdata->application; 1727 1728 if (rdata->is_mt_collection) { 1729 ret = mt_touch_input_configured(hdev, hi, 1730 mt_application); 1731 if (ret) 1732 return ret; 1733 } 1734 } 1735 1736 switch (hi->application) { 1737 case HID_GD_KEYBOARD: 1738 case HID_GD_KEYPAD: 1739 case HID_GD_MOUSE: 1740 case HID_DG_TOUCHPAD: 1741 case HID_GD_SYSTEM_CONTROL: 1742 case HID_CP_CONSUMER_CONTROL: 1743 case HID_GD_WIRELESS_RADIO_CTLS: 1744 case HID_GD_SYSTEM_MULTIAXIS: 1745 case HID_DG_PEN: 1746 /* already handled by hid core */ 1747 break; 1748 case HID_DG_TOUCHSCREEN: 1749 /* we do not set suffix = "Touchscreen" */ 1750 hi->input->name = hdev->name; 1751 break; 1752 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1753 suffix = "Custom Media Keys"; 1754 break; 1755 case HID_DG_STYLUS: 1756 /* force BTN_STYLUS to allow tablet matching in udev */ 1757 __set_bit(BTN_STYLUS, hi->input->keybit); 1758 break; 1759 default: 1760 suffix = "UNKNOWN"; 1761 break; 1762 } 1763 1764 if (suffix) { 1765 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1766 "%s %s", hdev->name, suffix); 1767 if (!hi->input->name) 1768 return -ENOMEM; 1769 } 1770 1771 return 0; 1772 } 1773 1774 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1775 { 1776 if (field->usage[0].hid != usage || 1777 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1778 return; 1779 1780 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1781 field->flags |= HID_MAIN_ITEM_VARIABLE; 1782 } 1783 1784 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1785 { 1786 struct hid_report *report; 1787 int i; 1788 1789 list_for_each_entry(report, 1790 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1791 list) { 1792 1793 if (!report->maxfield) 1794 continue; 1795 1796 for (i = 0; i < report->maxfield; i++) 1797 if (report->field[i]->maxusage >= 1) 1798 mt_fix_const_field(report->field[i], usage); 1799 } 1800 } 1801 1802 static void mt_release_contacts(struct hid_device *hid) 1803 { 1804 struct hid_input *hidinput; 1805 struct mt_application *application; 1806 struct mt_device *td = hid_get_drvdata(hid); 1807 1808 list_for_each_entry(hidinput, &hid->inputs, list) { 1809 struct input_dev *input_dev = hidinput->input; 1810 struct input_mt *mt = input_dev->mt; 1811 int i; 1812 1813 if (mt) { 1814 for (i = 0; i < mt->num_slots; i++) { 1815 input_mt_slot(input_dev, i); 1816 input_mt_report_slot_inactive(input_dev); 1817 clear_bit(i, &td->mt_io_flags); 1818 } 1819 input_mt_sync_frame(input_dev); 1820 input_sync(input_dev); 1821 } 1822 } 1823 1824 list_for_each_entry(application, &td->applications, list) { 1825 application->num_received = 0; 1826 } 1827 } 1828 1829 static void mt_expired_timeout(struct timer_list *t) 1830 { 1831 struct mt_device *td = timer_container_of(td, t, release_timer); 1832 struct hid_device *hdev = td->hdev; 1833 1834 /* 1835 * An input report came in just before we release the sticky fingers, 1836 * it will take care of the sticky fingers. 1837 */ 1838 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1839 return; 1840 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1841 mt_release_contacts(hdev); 1842 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1843 } 1844 1845 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1846 { 1847 int ret, i; 1848 struct mt_device *td; 1849 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1850 1851 for (i = 0; mt_classes[i].name ; i++) { 1852 if (id->driver_data == mt_classes[i].name) { 1853 mtclass = &(mt_classes[i]); 1854 break; 1855 } 1856 } 1857 1858 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1859 if (!td) { 1860 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1861 return -ENOMEM; 1862 } 1863 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL); 1864 if (!td->haptic) 1865 return -ENOMEM; 1866 1867 td->haptic->hdev = hdev; 1868 td->hdev = hdev; 1869 td->mtclass = *mtclass; 1870 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1871 hid_set_drvdata(hdev, td); 1872 1873 INIT_LIST_HEAD(&td->applications); 1874 INIT_LIST_HEAD(&td->reports); 1875 1876 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1877 td->serial_maybe = true; 1878 1879 1880 /* Orientation is inverted if the X or Y axes are 1881 * flipped, but normalized if both are inverted. 1882 */ 1883 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1884 !((hdev->quirks & HID_QUIRK_X_INVERT) 1885 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1886 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1887 1888 /* This allows the driver to correctly support devices 1889 * that emit events over several HID messages. 1890 */ 1891 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1892 1893 /* 1894 * This allows the driver to handle different input sensors 1895 * that emits events through different applications on the same HID 1896 * device. 1897 */ 1898 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1899 1900 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1901 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1902 1903 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1904 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1905 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1906 } 1907 1908 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1909 1910 ret = hid_parse(hdev); 1911 if (ret != 0) 1912 return ret; 1913 1914 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 1915 !hid_find_field(hdev, HID_INPUT_REPORT, 1916 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 1917 return -ENODEV; 1918 1919 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1920 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1921 1922 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 1923 hdev->quirks |= HID_QUIRK_NOGET; 1924 1925 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1926 if (ret) 1927 return ret; 1928 1929 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1930 if (ret) 1931 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1932 hdev->name); 1933 1934 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1935 1936 if (td->is_haptic_touchpad) { 1937 if (hid_haptic_init(hdev, &td->haptic)) { 1938 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n", 1939 hdev->name); 1940 td->is_haptic_touchpad = false; 1941 devm_kfree(&hdev->dev, td->haptic); 1942 } 1943 } else { 1944 devm_kfree(&hdev->dev, td->haptic); 1945 } 1946 1947 return 0; 1948 } 1949 1950 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 1951 { 1952 struct mt_device *td = hid_get_drvdata(hdev); 1953 1954 /* High latency is desirable for power savings during S3/S0ix */ 1955 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 1956 !hid_hw_may_wakeup(hdev)) 1957 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 1958 else 1959 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 1960 1961 return 0; 1962 } 1963 1964 static int mt_reset_resume(struct hid_device *hdev) 1965 { 1966 mt_release_contacts(hdev); 1967 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1968 return 0; 1969 } 1970 1971 static int mt_resume(struct hid_device *hdev) 1972 { 1973 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1974 * It should be safe to send it to other devices too. 1975 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1976 1977 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1978 1979 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1980 1981 return 0; 1982 } 1983 1984 static void mt_remove(struct hid_device *hdev) 1985 { 1986 struct mt_device *td = hid_get_drvdata(hdev); 1987 1988 timer_delete_sync(&td->release_timer); 1989 1990 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1991 hid_hw_stop(hdev); 1992 } 1993 1994 static void mt_on_hid_hw_open(struct hid_device *hdev) 1995 { 1996 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 1997 } 1998 1999 static void mt_on_hid_hw_close(struct hid_device *hdev) 2000 { 2001 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2002 } 2003 2004 /* 2005 * This list contains only: 2006 * - VID/PID of products not working with the default multitouch handling 2007 * - 2 generic rules. 2008 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2009 */ 2010 static const struct hid_device_id mt_devices[] = { 2011 2012 /* 3M panels */ 2013 { .driver_data = MT_CLS_3M, 2014 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2015 USB_DEVICE_ID_3M1968) }, 2016 { .driver_data = MT_CLS_3M, 2017 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2018 USB_DEVICE_ID_3M2256) }, 2019 { .driver_data = MT_CLS_3M, 2020 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2021 USB_DEVICE_ID_3M3266) }, 2022 2023 /* Anton devices */ 2024 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2025 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2026 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2027 2028 /* Asus T101HA */ 2029 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2030 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2031 USB_VENDOR_ID_ASUSTEK, 2032 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2033 2034 /* Asus T304UA */ 2035 { .driver_data = MT_CLS_ASUS, 2036 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2037 USB_VENDOR_ID_ASUSTEK, 2038 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2039 2040 /* Atmel panels */ 2041 { .driver_data = MT_CLS_SERIAL, 2042 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2043 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2044 2045 /* Baanto multitouch devices */ 2046 { .driver_data = MT_CLS_NSMU, 2047 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2048 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2049 2050 /* Cando panels */ 2051 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2052 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2053 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2054 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2055 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2056 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2057 2058 /* Chunghwa Telecom touch panels */ 2059 { .driver_data = MT_CLS_NSMU, 2060 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2061 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2062 2063 /* CJTouch panels */ 2064 { .driver_data = MT_CLS_NSMU, 2065 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2066 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2067 { .driver_data = MT_CLS_NSMU, 2068 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2069 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2070 2071 /* CVTouch panels */ 2072 { .driver_data = MT_CLS_NSMU, 2073 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2074 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2075 2076 /* eGalax devices (SAW) */ 2077 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2078 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2079 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2080 2081 /* eGalax devices (resistive) */ 2082 { .driver_data = MT_CLS_EGALAX, 2083 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2084 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2085 { .driver_data = MT_CLS_EGALAX, 2086 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2087 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2088 2089 /* eGalax devices (capacitive) */ 2090 { .driver_data = MT_CLS_EGALAX_SERIAL, 2091 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2092 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2093 { .driver_data = MT_CLS_EGALAX, 2094 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2095 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2096 { .driver_data = MT_CLS_EGALAX_SERIAL, 2097 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2098 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2099 { .driver_data = MT_CLS_EGALAX_SERIAL, 2100 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2101 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2102 { .driver_data = MT_CLS_EGALAX_SERIAL, 2103 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2104 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2105 { .driver_data = MT_CLS_EGALAX_SERIAL, 2106 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2107 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2108 { .driver_data = MT_CLS_EGALAX, 2109 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2110 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2111 { .driver_data = MT_CLS_EGALAX, 2112 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2113 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2114 { .driver_data = MT_CLS_EGALAX_SERIAL, 2115 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2116 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2117 { .driver_data = MT_CLS_EGALAX, 2118 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2119 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2120 { .driver_data = MT_CLS_EGALAX, 2121 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2122 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2123 { .driver_data = MT_CLS_EGALAX, 2124 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2125 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2126 { .driver_data = MT_CLS_EGALAX, 2127 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2128 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2129 { .driver_data = MT_CLS_EGALAX_SERIAL, 2130 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2131 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2132 { .driver_data = MT_CLS_EGALAX_SERIAL, 2133 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2134 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2135 { .driver_data = MT_CLS_EGALAX_SERIAL, 2136 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2137 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2138 { .driver_data = MT_CLS_EGALAX, 2139 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2140 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2141 2142 /* Elan devices */ 2143 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2144 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2145 USB_VENDOR_ID_ELAN, 0x313a) }, 2146 2147 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2148 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2149 USB_VENDOR_ID_ELAN, 0x3148) }, 2150 2151 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2152 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2153 USB_VENDOR_ID_ELAN, 0x32ae) }, 2154 2155 /* Elitegroup panel */ 2156 { .driver_data = MT_CLS_SERIAL, 2157 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2158 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2159 2160 /* Flatfrog Panels */ 2161 { .driver_data = MT_CLS_FLATFROG, 2162 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2163 USB_DEVICE_ID_MULTITOUCH_3200) }, 2164 2165 /* FocalTech Panels */ 2166 { .driver_data = MT_CLS_SERIAL, 2167 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2168 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2169 2170 /* GeneralTouch panel */ 2171 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2172 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2173 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2174 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2175 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2176 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2177 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2178 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2179 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2180 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2181 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2182 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2183 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2184 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2185 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2186 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2187 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2188 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2189 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2190 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2191 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2192 2193 /* Gametel game controller */ 2194 { .driver_data = MT_CLS_NSMU, 2195 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2196 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2197 2198 /* Goodix GT7868Q devices */ 2199 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2200 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2201 I2C_DEVICE_ID_GOODIX_01E8) }, 2202 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2203 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2204 I2C_DEVICE_ID_GOODIX_01E9) }, 2205 2206 /* GoodTouch panels */ 2207 { .driver_data = MT_CLS_NSMU, 2208 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2209 USB_DEVICE_ID_GOODTOUCH_000f) }, 2210 2211 /* Hanvon panels */ 2212 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2213 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2214 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2215 2216 /* HONOR GLO-GXXX panel */ 2217 { .driver_data = MT_CLS_VTL, 2218 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2219 0x347d, 0x7853) }, 2220 2221 /* HONOR MagicBook Art 14 touchpad */ 2222 { .driver_data = MT_CLS_VTL, 2223 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2224 0x35cc, 0x0104) }, 2225 2226 /* Ilitek dual touch panel */ 2227 { .driver_data = MT_CLS_NSMU, 2228 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2229 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2230 2231 /* LG Melfas panel */ 2232 { .driver_data = MT_CLS_LG, 2233 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2234 USB_DEVICE_ID_LG_MELFAS_MT) }, 2235 { .driver_data = MT_CLS_LG, 2236 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2237 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2238 2239 /* Lenovo X1 TAB Gen 1 */ 2240 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2241 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2242 USB_VENDOR_ID_LENOVO, 2243 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2244 2245 /* Lenovo X1 TAB Gen 2 */ 2246 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2247 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2248 USB_VENDOR_ID_LENOVO, 2249 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2250 2251 /* Lenovo X1 TAB Gen 3 */ 2252 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2253 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2254 USB_VENDOR_ID_LENOVO, 2255 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2256 2257 /* Lenovo X12 TAB Gen 1 */ 2258 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2259 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2260 USB_VENDOR_ID_LENOVO, 2261 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2262 2263 /* Lenovo X12 TAB Gen 2 */ 2264 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2265 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2266 USB_VENDOR_ID_LENOVO, 2267 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2268 2269 /* Logitech devices */ 2270 { .driver_data = MT_CLS_NSMU, 2271 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2272 USB_VENDOR_ID_LOGITECH, 2273 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2274 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2275 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2276 USB_VENDOR_ID_LOGITECH, 2277 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2278 2279 /* MosArt panels */ 2280 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2281 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2282 USB_DEVICE_ID_ASUS_T91MT)}, 2283 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2284 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2285 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2286 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2287 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2288 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2289 2290 /* Novatek Panel */ 2291 { .driver_data = MT_CLS_NSMU, 2292 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2293 USB_DEVICE_ID_NOVATEK_PCT) }, 2294 2295 /* Ntrig Panel */ 2296 { .driver_data = MT_CLS_NSMU, 2297 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2298 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2299 2300 /* Panasonic panels */ 2301 { .driver_data = MT_CLS_PANASONIC, 2302 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2303 USB_DEVICE_ID_PANABOARD_UBT780) }, 2304 { .driver_data = MT_CLS_PANASONIC, 2305 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2306 USB_DEVICE_ID_PANABOARD_UBT880) }, 2307 2308 /* PixArt optical touch screen */ 2309 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2310 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2311 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2312 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2313 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2314 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2315 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2316 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2317 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2318 2319 /* PixCir-based panels */ 2320 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2321 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2322 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2323 2324 /* Quanta-based panels */ 2325 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2326 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2327 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2328 2329 /* Razer touchpads */ 2330 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2331 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2332 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2333 2334 /* Smart Tech panels */ 2335 { .driver_data = MT_CLS_SMART_TECH, 2336 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2337 2338 /* Stantum panels */ 2339 { .driver_data = MT_CLS_CONFIDENCE, 2340 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2341 USB_DEVICE_ID_MTP_STM)}, 2342 2343 /* Synaptics devices */ 2344 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2345 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2346 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2347 2348 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2349 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2350 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2351 2352 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2353 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2354 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2355 2356 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2357 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2358 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2359 2360 /* TopSeed panels */ 2361 { .driver_data = MT_CLS_TOPSEED, 2362 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2363 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2364 2365 /* Touch International panels */ 2366 { .driver_data = MT_CLS_NSMU, 2367 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2368 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2369 2370 /* Unitec panels */ 2371 { .driver_data = MT_CLS_NSMU, 2372 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2373 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2374 { .driver_data = MT_CLS_NSMU, 2375 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2376 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2377 2378 /* VTL panels */ 2379 { .driver_data = MT_CLS_VTL, 2380 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2381 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2382 2383 /* Winbond Electronics Corp. */ 2384 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2385 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2386 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2387 2388 /* Wistron panels */ 2389 { .driver_data = MT_CLS_NSMU, 2390 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2391 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2392 2393 /* XAT */ 2394 { .driver_data = MT_CLS_NSMU, 2395 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2396 USB_DEVICE_ID_XAT_CSR) }, 2397 2398 /* Xiroku */ 2399 { .driver_data = MT_CLS_NSMU, 2400 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2401 USB_DEVICE_ID_XIROKU_SPX) }, 2402 { .driver_data = MT_CLS_NSMU, 2403 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2404 USB_DEVICE_ID_XIROKU_MPX) }, 2405 { .driver_data = MT_CLS_NSMU, 2406 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2407 USB_DEVICE_ID_XIROKU_CSR) }, 2408 { .driver_data = MT_CLS_NSMU, 2409 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2410 USB_DEVICE_ID_XIROKU_SPX1) }, 2411 { .driver_data = MT_CLS_NSMU, 2412 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2413 USB_DEVICE_ID_XIROKU_MPX1) }, 2414 { .driver_data = MT_CLS_NSMU, 2415 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2416 USB_DEVICE_ID_XIROKU_CSR1) }, 2417 { .driver_data = MT_CLS_NSMU, 2418 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2419 USB_DEVICE_ID_XIROKU_SPX2) }, 2420 { .driver_data = MT_CLS_NSMU, 2421 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2422 USB_DEVICE_ID_XIROKU_MPX2) }, 2423 { .driver_data = MT_CLS_NSMU, 2424 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2425 USB_DEVICE_ID_XIROKU_CSR2) }, 2426 2427 /* Apple Touch Bar */ 2428 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2429 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2430 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2431 2432 /* Google MT devices */ 2433 { .driver_data = MT_CLS_GOOGLE, 2434 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2435 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2436 { .driver_data = MT_CLS_GOOGLE, 2437 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2438 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2439 2440 /* sis */ 2441 { .driver_data = MT_CLS_SIS, 2442 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2443 HID_ANY_ID) }, 2444 2445 /* Hantick */ 2446 { .driver_data = MT_CLS_NSMU, 2447 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2448 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2449 2450 /* Generic MT device */ 2451 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2452 2453 /* Generic Win 8 certified MT device */ 2454 { .driver_data = MT_CLS_WIN_8, 2455 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2456 HID_ANY_ID, HID_ANY_ID) }, 2457 { } 2458 }; 2459 MODULE_DEVICE_TABLE(hid, mt_devices); 2460 2461 static const struct hid_usage_id mt_grabbed_usages[] = { 2462 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2463 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2464 }; 2465 2466 static struct hid_driver mt_driver = { 2467 .name = "hid-multitouch", 2468 .id_table = mt_devices, 2469 .probe = mt_probe, 2470 .remove = mt_remove, 2471 .input_mapping = mt_input_mapping, 2472 .input_mapped = mt_input_mapped, 2473 .input_configured = mt_input_configured, 2474 .feature_mapping = mt_feature_mapping, 2475 .usage_table = mt_grabbed_usages, 2476 .event = mt_event, 2477 .report_fixup = mt_report_fixup, 2478 .report = mt_report, 2479 .suspend = pm_ptr(mt_suspend), 2480 .reset_resume = pm_ptr(mt_reset_resume), 2481 .resume = pm_ptr(mt_resume), 2482 .on_hid_hw_open = mt_on_hid_hw_open, 2483 .on_hid_hw_close = mt_on_hid_hw_close, 2484 }; 2485 module_hid_driver(mt_driver); 2486