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