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