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