1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for multitouch panels 4 * 5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 8 * Copyright (c) 2012-2013 Red Hat, Inc 9 * 10 * This code is partly based on hid-egalax.c: 11 * 12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 14 * Copyright (c) 2010 Canonical, Ltd. 15 * 16 * This code is partly based on hid-3m-pct.c: 17 * 18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 20 * Copyright (c) 2010 Canonical, Ltd. 21 */ 22 23 /* 24 */ 25 26 /* 27 * This driver is regularly tested thanks to the test suite in hid-tools[1]. 28 * Please run these regression tests before patching this module so that 29 * your patch won't break existing known devices. 30 * 31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools 32 */ 33 34 #include <linux/bits.h> 35 #include <linux/device.h> 36 #include <linux/hid.h> 37 #include <linux/module.h> 38 #include <linux/slab.h> 39 #include <linux/input/mt.h> 40 #include <linux/jiffies.h> 41 #include <linux/string.h> 42 #include <linux/timer.h> 43 44 45 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 46 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 47 MODULE_DESCRIPTION("HID multitouch panels"); 48 MODULE_LICENSE("GPL"); 49 50 #include "hid-ids.h" 51 52 #include "hid-haptic.h" 53 54 /* quirks to control the device */ 55 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 56 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 57 #define MT_QUIRK_CYPRESS BIT(2) 58 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 59 #define MT_QUIRK_ALWAYS_VALID BIT(4) 60 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 61 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 62 #define MT_QUIRK_CONFIDENCE BIT(7) 63 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 64 #define MT_QUIRK_NO_AREA BIT(9) 65 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 66 #define MT_QUIRK_HOVERING BIT(11) 67 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 68 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 69 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 70 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 71 #define MT_QUIRK_STICKY_FINGERS BIT(16) 72 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 73 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) 74 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) 75 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) 76 #define MT_QUIRK_DISABLE_WAKEUP BIT(21) 77 #define MT_QUIRK_ORIENTATION_INVERT BIT(22) 78 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) 79 #define MT_QUIRK_YOGABOOK9I BIT(24) 80 81 #define MT_INPUTMODE_TOUCHSCREEN 0x02 82 #define MT_INPUTMODE_TOUCHPAD 0x03 83 84 #define MT_BUTTONTYPE_CLICKPAD 0 85 #define MT_BUTTONTYPE_PRESSUREPAD 1 86 87 enum latency_mode { 88 HID_LATENCY_NORMAL = 0, 89 HID_LATENCY_HIGH = 1, 90 }; 91 92 enum report_mode { 93 TOUCHPAD_REPORT_NONE = 0, 94 TOUCHPAD_REPORT_BUTTONS = BIT(0), 95 TOUCHPAD_REPORT_CONTACTS = BIT(1), 96 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 97 }; 98 99 #define MT_IO_SLOTS_MASK GENMASK(7, 0) /* reserve first 8 bits for slot tracking */ 100 #define MT_IO_FLAGS_RUNNING 32 101 102 static const bool mtrue = true; /* default for true */ 103 static const bool mfalse; /* default for false */ 104 static const __s32 mzero; /* default for 0 */ 105 106 #define DEFAULT_TRUE ((void *)&mtrue) 107 #define DEFAULT_FALSE ((void *)&mfalse) 108 #define DEFAULT_ZERO ((void *)&mzero) 109 110 struct mt_usages { 111 struct list_head list; 112 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 113 __s32 *contactid; /* the device ContactID assigned to this slot */ 114 bool *tip_state; /* is the touch valid? */ 115 bool *inrange_state; /* is the finger in proximity of the sensor? */ 116 bool *confidence_state; /* is the touch made by a finger? */ 117 }; 118 119 struct mt_application { 120 struct list_head list; 121 unsigned int application; 122 unsigned int report_id; 123 struct list_head mt_usages; /* mt usages list */ 124 125 __s32 quirks; 126 127 __s32 *scantime; /* scantime reported */ 128 __s32 scantime_logical_max; /* max value for raw scantime */ 129 130 __s32 *raw_cc; /* contact count in the report */ 131 int left_button_state; /* left button state */ 132 unsigned int mt_flags; /* flags to pass to input-mt */ 133 134 unsigned long *pending_palm_slots; /* slots where we reported palm 135 * and need to release */ 136 137 __u8 num_received; /* how many contacts we received */ 138 __u8 num_expected; /* expected last contact index */ 139 __u8 buttons_count; /* number of physical buttons per touchpad */ 140 __u8 touches_by_report; /* how many touches are present in one report: 141 * 1 means we should use a serial protocol 142 * > 1 means hybrid (multitouch) protocol 143 */ 144 145 unsigned long jiffies; /* the frame's jiffies */ 146 int timestamp; /* the timestamp to be sent */ 147 int prev_scantime; /* scantime reported previously */ 148 149 bool have_contact_count; 150 }; 151 152 struct mt_class { 153 __s32 name; /* MT_CLS */ 154 __s32 quirks; 155 __s32 sn_move; /* Signal/noise ratio for move events */ 156 __s32 sn_width; /* Signal/noise ratio for width events */ 157 __s32 sn_height; /* Signal/noise ratio for height events */ 158 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 159 __u8 maxcontacts; 160 bool is_indirect; /* true for touchpads */ 161 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 162 }; 163 164 struct mt_report_data { 165 struct list_head list; 166 struct hid_report *report; 167 struct mt_application *application; 168 bool is_mt_collection; 169 }; 170 171 struct mt_device { 172 struct mt_class mtclass; /* our mt device class */ 173 struct timer_list release_timer; /* to release sticky fingers */ 174 struct hid_haptic_device *haptic; /* haptic related configuration */ 175 struct hid_device *hdev; /* hid_device we're attached to */ 176 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_RUNNING) 177 * first 8 bits are reserved for keeping the slot 178 * states, this is fine because we only support up 179 * to 250 slots (MT_MAX_MAXCONTACT) 180 */ 181 __u8 inputmode_value; /* InputMode HID feature value */ 182 __u8 maxcontacts; 183 bool is_buttonpad; /* is this device a button pad? */ 184 bool is_pressurepad; /* is this device a pressurepad? */ 185 bool is_haptic_touchpad; /* is this device a haptic touchpad? */ 186 bool serial_maybe; /* need to check for serial protocol */ 187 188 struct list_head applications; 189 struct list_head reports; 190 }; 191 192 static void mt_post_parse_default_settings(struct mt_device *td, 193 struct mt_application *app); 194 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 195 196 /* classes of device behavior */ 197 #define MT_CLS_DEFAULT 0x0001 198 199 #define MT_CLS_SERIAL 0x0002 200 #define MT_CLS_CONFIDENCE 0x0003 201 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 202 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 203 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 204 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 205 /* reserved 0x0008 */ 206 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 207 #define MT_CLS_NSMU 0x000a 208 /* reserved 0x0010 */ 209 /* reserved 0x0011 */ 210 #define MT_CLS_WIN_8 0x0012 211 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 212 /* reserved 0x0014 */ 213 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 214 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 215 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 216 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 217 218 /* vendor specific classes */ 219 #define MT_CLS_3M 0x0101 220 /* reserved 0x0102 */ 221 #define MT_CLS_EGALAX 0x0103 222 #define MT_CLS_EGALAX_SERIAL 0x0104 223 #define MT_CLS_TOPSEED 0x0105 224 #define MT_CLS_PANASONIC 0x0106 225 #define MT_CLS_FLATFROG 0x0107 226 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 227 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 228 #define MT_CLS_LG 0x010a 229 #define MT_CLS_ASUS 0x010b 230 #define MT_CLS_VTL 0x0110 231 #define MT_CLS_GOOGLE 0x0111 232 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 233 #define MT_CLS_SMART_TECH 0x0113 234 #define MT_CLS_APPLE_TOUCHBAR 0x0114 235 #define MT_CLS_YOGABOOK9I 0x0115 236 #define MT_CLS_EGALAX_P80H84 0x0116 237 #define MT_CLS_SIS 0x0457 238 239 #define MT_DEFAULT_MAXCONTACT 10 240 #define MT_MAX_MAXCONTACT 250 241 242 /* 243 * Resync device and local timestamps after that many microseconds without 244 * receiving data. 245 */ 246 #define MAX_TIMESTAMP_INTERVAL 1000000 247 248 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 249 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 250 251 /* 252 * these device-dependent functions determine what slot corresponds 253 * to a valid contact that was just read. 254 */ 255 256 static int cypress_compute_slot(struct mt_application *application, 257 struct mt_usages *slot) 258 { 259 if (*slot->contactid != 0 || application->num_received == 0) 260 return *slot->contactid; 261 else 262 return -1; 263 } 264 265 static const struct mt_class mt_classes[] = { 266 { .name = MT_CLS_DEFAULT, 267 .quirks = MT_QUIRK_ALWAYS_VALID | 268 MT_QUIRK_CONTACT_CNT_ACCURATE }, 269 { .name = MT_CLS_NSMU, 270 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 271 { .name = MT_CLS_SERIAL, 272 .quirks = MT_QUIRK_ALWAYS_VALID}, 273 { .name = MT_CLS_CONFIDENCE, 274 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 275 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 276 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 277 MT_QUIRK_SLOT_IS_CONTACTID }, 278 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 279 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 280 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 281 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 282 .quirks = MT_QUIRK_VALID_IS_INRANGE | 283 MT_QUIRK_SLOT_IS_CONTACTID, 284 .maxcontacts = 2 }, 285 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 286 .quirks = MT_QUIRK_VALID_IS_INRANGE | 287 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 288 .maxcontacts = 2 }, 289 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 290 .quirks = MT_QUIRK_VALID_IS_INRANGE | 291 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 292 { .name = MT_CLS_WIN_8, 293 .quirks = MT_QUIRK_ALWAYS_VALID | 294 MT_QUIRK_IGNORE_DUPLICATES | 295 MT_QUIRK_HOVERING | 296 MT_QUIRK_CONTACT_CNT_ACCURATE | 297 MT_QUIRK_STICKY_FINGERS | 298 MT_QUIRK_WIN8_PTP_BUTTONS, 299 .export_all_inputs = true }, 300 { .name = MT_CLS_EXPORT_ALL_INPUTS, 301 .quirks = MT_QUIRK_ALWAYS_VALID | 302 MT_QUIRK_CONTACT_CNT_ACCURATE, 303 .export_all_inputs = true }, 304 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 305 .quirks = MT_QUIRK_ALWAYS_VALID | 306 MT_QUIRK_IGNORE_DUPLICATES | 307 MT_QUIRK_HOVERING | 308 MT_QUIRK_CONTACT_CNT_ACCURATE | 309 MT_QUIRK_STICKY_FINGERS | 310 MT_QUIRK_WIN8_PTP_BUTTONS | 311 MT_QUIRK_FORCE_MULTI_INPUT, 312 .export_all_inputs = true }, 313 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 314 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 315 MT_QUIRK_HOVERING | 316 MT_QUIRK_CONTACT_CNT_ACCURATE | 317 MT_QUIRK_STICKY_FINGERS | 318 MT_QUIRK_WIN8_PTP_BUTTONS | 319 MT_QUIRK_FORCE_MULTI_INPUT | 320 MT_QUIRK_NOT_SEEN_MEANS_UP, 321 .export_all_inputs = true }, 322 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 323 .quirks = MT_QUIRK_ALWAYS_VALID | 324 MT_QUIRK_IGNORE_DUPLICATES | 325 MT_QUIRK_HOVERING | 326 MT_QUIRK_CONTACT_CNT_ACCURATE | 327 MT_QUIRK_STICKY_FINGERS | 328 MT_QUIRK_WIN8_PTP_BUTTONS | 329 MT_QUIRK_DISABLE_WAKEUP, 330 .export_all_inputs = true }, 331 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 332 .quirks = MT_QUIRK_ALWAYS_VALID | 333 MT_QUIRK_IGNORE_DUPLICATES | 334 MT_QUIRK_HOVERING | 335 MT_QUIRK_CONTACT_CNT_ACCURATE | 336 MT_QUIRK_WIN8_PTP_BUTTONS, 337 .export_all_inputs = true }, 338 339 /* 340 * vendor specific classes 341 */ 342 { .name = MT_CLS_3M, 343 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 344 MT_QUIRK_SLOT_IS_CONTACTID | 345 MT_QUIRK_TOUCH_SIZE_SCALING, 346 .sn_move = 2048, 347 .sn_width = 128, 348 .sn_height = 128, 349 .maxcontacts = 60, 350 }, 351 { .name = MT_CLS_EGALAX, 352 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 353 MT_QUIRK_VALID_IS_INRANGE, 354 .sn_move = 4096, 355 .sn_pressure = 32, 356 }, 357 { .name = MT_CLS_EGALAX_SERIAL, 358 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 359 MT_QUIRK_ALWAYS_VALID, 360 .sn_move = 4096, 361 .sn_pressure = 32, 362 }, 363 { .name = MT_CLS_TOPSEED, 364 .quirks = MT_QUIRK_ALWAYS_VALID, 365 .is_indirect = true, 366 .maxcontacts = 2, 367 }, 368 { .name = MT_CLS_PANASONIC, 369 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 370 .maxcontacts = 4 }, 371 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 372 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 373 MT_QUIRK_VALID_IS_INRANGE | 374 MT_QUIRK_SLOT_IS_CONTACTID, 375 .maxcontacts = 2 376 }, 377 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 378 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 379 MT_QUIRK_SLOT_IS_CONTACTID 380 }, 381 382 { .name = MT_CLS_FLATFROG, 383 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 384 MT_QUIRK_NO_AREA, 385 .sn_move = 2048, 386 .maxcontacts = 40, 387 }, 388 { .name = MT_CLS_LG, 389 .quirks = MT_QUIRK_ALWAYS_VALID | 390 MT_QUIRK_FIX_CONST_CONTACT_ID | 391 MT_QUIRK_IGNORE_DUPLICATES | 392 MT_QUIRK_HOVERING | 393 MT_QUIRK_CONTACT_CNT_ACCURATE }, 394 { .name = MT_CLS_ASUS, 395 .quirks = MT_QUIRK_ALWAYS_VALID | 396 MT_QUIRK_CONTACT_CNT_ACCURATE | 397 MT_QUIRK_ASUS_CUSTOM_UP }, 398 { .name = MT_CLS_VTL, 399 .quirks = MT_QUIRK_ALWAYS_VALID | 400 MT_QUIRK_CONTACT_CNT_ACCURATE | 401 MT_QUIRK_STICKY_FINGERS | 402 MT_QUIRK_FORCE_GET_FEATURE, 403 }, 404 { .name = MT_CLS_GOOGLE, 405 .quirks = MT_QUIRK_ALWAYS_VALID | 406 MT_QUIRK_CONTACT_CNT_ACCURATE | 407 MT_QUIRK_SLOT_IS_CONTACTID | 408 MT_QUIRK_HOVERING 409 }, 410 { .name = MT_CLS_RAZER_BLADE_STEALTH, 411 .quirks = MT_QUIRK_ALWAYS_VALID | 412 MT_QUIRK_IGNORE_DUPLICATES | 413 MT_QUIRK_HOVERING | 414 MT_QUIRK_CONTACT_CNT_ACCURATE | 415 MT_QUIRK_WIN8_PTP_BUTTONS, 416 }, 417 { .name = MT_CLS_SMART_TECH, 418 .quirks = MT_QUIRK_ALWAYS_VALID | 419 MT_QUIRK_IGNORE_DUPLICATES | 420 MT_QUIRK_CONTACT_CNT_ACCURATE | 421 MT_QUIRK_SEPARATE_APP_REPORT, 422 }, 423 { .name = MT_CLS_APPLE_TOUCHBAR, 424 .quirks = MT_QUIRK_HOVERING | 425 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 426 MT_QUIRK_APPLE_TOUCHBAR, 427 .maxcontacts = 11, 428 }, 429 { .name = MT_CLS_SIS, 430 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 431 MT_QUIRK_ALWAYS_VALID | 432 MT_QUIRK_CONTACT_CNT_ACCURATE, 433 }, 434 { .name = MT_CLS_YOGABOOK9I, 435 .quirks = MT_QUIRK_ALWAYS_VALID | 436 MT_QUIRK_FORCE_MULTI_INPUT | 437 MT_QUIRK_SEPARATE_APP_REPORT | 438 MT_QUIRK_HOVERING | 439 MT_QUIRK_YOGABOOK9I, 440 .export_all_inputs = true 441 }, 442 { .name = MT_CLS_EGALAX_P80H84, 443 .quirks = MT_QUIRK_ALWAYS_VALID | 444 MT_QUIRK_IGNORE_DUPLICATES | 445 MT_QUIRK_CONTACT_CNT_ACCURATE, 446 }, 447 { } 448 }; 449 450 static ssize_t mt_show_quirks(struct device *dev, 451 struct device_attribute *attr, 452 char *buf) 453 { 454 struct hid_device *hdev = to_hid_device(dev); 455 struct mt_device *td = hid_get_drvdata(hdev); 456 457 return sprintf(buf, "%u\n", td->mtclass.quirks); 458 } 459 460 static ssize_t mt_set_quirks(struct device *dev, 461 struct device_attribute *attr, 462 const char *buf, size_t count) 463 { 464 struct hid_device *hdev = to_hid_device(dev); 465 struct mt_device *td = hid_get_drvdata(hdev); 466 struct mt_application *application; 467 468 unsigned long val; 469 470 if (kstrtoul(buf, 0, &val)) 471 return -EINVAL; 472 473 td->mtclass.quirks = val; 474 475 list_for_each_entry(application, &td->applications, list) { 476 application->quirks = val; 477 if (!application->have_contact_count) 478 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 479 } 480 481 return count; 482 } 483 484 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 485 486 static struct attribute *sysfs_attrs[] = { 487 &dev_attr_quirks.attr, 488 NULL 489 }; 490 491 static const struct attribute_group mt_attribute_group = { 492 .attrs = sysfs_attrs 493 }; 494 495 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 496 { 497 int ret; 498 u32 size = hid_report_len(report); 499 u8 *buf; 500 501 /* 502 * Do not fetch the feature report if the device has been explicitly 503 * marked as non-capable. 504 */ 505 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 506 return; 507 508 buf = hid_alloc_report_buf(report, GFP_KERNEL); 509 if (!buf) 510 return; 511 512 ret = hid_hw_raw_request(hdev, report->id, buf, size, 513 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 514 if (ret < 0) { 515 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 516 report->id); 517 } else { 518 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 519 size, 0); 520 if (ret) 521 dev_warn(&hdev->dev, "failed to report feature\n"); 522 } 523 524 kfree(buf); 525 } 526 527 static void mt_feature_mapping(struct hid_device *hdev, 528 struct hid_field *field, struct hid_usage *usage) 529 { 530 struct mt_device *td = hid_get_drvdata(hdev); 531 532 switch (usage->hid) { 533 case HID_DG_CONTACTMAX: 534 mt_get_feature(hdev, field->report); 535 536 td->maxcontacts = field->value[0]; 537 if (!td->maxcontacts && 538 field->logical_maximum <= MT_MAX_MAXCONTACT) 539 td->maxcontacts = field->logical_maximum; 540 if (td->mtclass.maxcontacts) 541 /* check if the maxcontacts is given by the class */ 542 td->maxcontacts = td->mtclass.maxcontacts; 543 544 break; 545 case HID_DG_BUTTONTYPE: 546 if (usage->usage_index >= field->report_count) { 547 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 548 break; 549 } 550 551 mt_get_feature(hdev, field->report); 552 switch (field->value[usage->usage_index]) { 553 case MT_BUTTONTYPE_CLICKPAD: 554 td->is_buttonpad = true; 555 break; 556 case MT_BUTTONTYPE_PRESSUREPAD: 557 td->is_pressurepad = true; 558 break; 559 } 560 561 break; 562 case 0xff0000c5: 563 /* Retrieve the Win8 blob once to enable some devices */ 564 if (usage->usage_index == 0) 565 mt_get_feature(hdev, field->report); 566 break; 567 } 568 569 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 570 } 571 572 static void set_abs(struct input_dev *input, unsigned int code, 573 struct hid_field *field, int snratio) 574 { 575 int fmin = field->logical_minimum; 576 int fmax = field->logical_maximum; 577 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 578 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 579 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 580 } 581 582 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 583 struct mt_application *application) 584 { 585 struct mt_usages *usage; 586 587 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 588 if (!usage) 589 return NULL; 590 591 /* set some defaults so we do not need to check for null pointers */ 592 usage->x = DEFAULT_ZERO; 593 usage->y = DEFAULT_ZERO; 594 usage->cx = DEFAULT_ZERO; 595 usage->cy = DEFAULT_ZERO; 596 usage->p = DEFAULT_ZERO; 597 usage->w = DEFAULT_ZERO; 598 usage->h = DEFAULT_ZERO; 599 usage->a = DEFAULT_ZERO; 600 usage->contactid = DEFAULT_ZERO; 601 usage->tip_state = DEFAULT_FALSE; 602 usage->inrange_state = DEFAULT_FALSE; 603 usage->confidence_state = DEFAULT_TRUE; 604 605 list_add_tail(&usage->list, &application->mt_usages); 606 607 return usage; 608 } 609 610 static struct mt_application *mt_allocate_application(struct mt_device *td, 611 struct hid_report *report) 612 { 613 unsigned int application = report->application; 614 struct mt_application *mt_application; 615 616 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 617 GFP_KERNEL); 618 if (!mt_application) 619 return NULL; 620 621 mt_application->application = application; 622 INIT_LIST_HEAD(&mt_application->mt_usages); 623 624 if (application == HID_DG_TOUCHSCREEN) 625 mt_application->mt_flags |= INPUT_MT_DIRECT; 626 627 /* 628 * Model touchscreens providing buttons as touchpads. 629 */ 630 if (application == HID_DG_TOUCHPAD) { 631 mt_application->mt_flags |= INPUT_MT_POINTER; 632 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 633 } 634 635 mt_application->scantime = DEFAULT_ZERO; 636 mt_application->raw_cc = DEFAULT_ZERO; 637 mt_application->quirks = td->mtclass.quirks; 638 mt_application->report_id = report->id; 639 640 list_add_tail(&mt_application->list, &td->applications); 641 642 return mt_application; 643 } 644 645 static struct mt_application *mt_find_application(struct mt_device *td, 646 struct hid_report *report) 647 { 648 unsigned int application = report->application; 649 struct mt_application *tmp, *mt_application = NULL; 650 651 list_for_each_entry(tmp, &td->applications, list) { 652 if (application == tmp->application) { 653 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 654 tmp->report_id == report->id) { 655 mt_application = tmp; 656 break; 657 } 658 } 659 } 660 661 if (!mt_application) 662 mt_application = mt_allocate_application(td, report); 663 664 return mt_application; 665 } 666 667 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 668 struct hid_report *report) 669 { 670 struct mt_class *cls = &td->mtclass; 671 struct mt_report_data *rdata; 672 struct hid_field *field; 673 int r, n; 674 675 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 676 if (!rdata) 677 return NULL; 678 679 rdata->report = report; 680 rdata->application = mt_find_application(td, report); 681 682 if (!rdata->application) { 683 devm_kfree(&td->hdev->dev, rdata); 684 return NULL; 685 } 686 687 for (r = 0; r < report->maxfield; r++) { 688 field = report->field[r]; 689 690 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 691 continue; 692 693 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 694 for (n = 0; n < field->report_count; n++) { 695 unsigned int hid = field->usage[n].hid; 696 697 if (hid == HID_DG_CONTACTID || 698 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 699 hid == HID_DG_TRANSDUCER_INDEX)) { 700 rdata->is_mt_collection = true; 701 break; 702 } 703 } 704 } 705 } 706 707 list_add_tail(&rdata->list, &td->reports); 708 709 return rdata; 710 } 711 712 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 713 struct hid_report *report) 714 { 715 struct mt_report_data *tmp, *rdata = NULL; 716 717 list_for_each_entry(tmp, &td->reports, list) { 718 if (report == tmp->report) { 719 rdata = tmp; 720 break; 721 } 722 } 723 724 if (!rdata) 725 rdata = mt_allocate_report_data(td, report); 726 727 return rdata; 728 } 729 730 static void mt_store_field(struct hid_device *hdev, 731 struct mt_application *application, 732 __s32 *value, 733 size_t offset) 734 { 735 struct mt_usages *usage; 736 __s32 **target; 737 738 if (list_empty(&application->mt_usages)) 739 usage = mt_allocate_usage(hdev, application); 740 else 741 usage = list_last_entry(&application->mt_usages, 742 struct mt_usages, 743 list); 744 745 if (!usage) 746 return; 747 748 target = (__s32 **)((char *)usage + offset); 749 750 /* the value has already been filled, create a new slot */ 751 if (*target != DEFAULT_TRUE && 752 *target != DEFAULT_FALSE && 753 *target != DEFAULT_ZERO) { 754 if (usage->contactid == DEFAULT_ZERO || 755 usage->x == DEFAULT_ZERO || 756 usage->y == DEFAULT_ZERO) { 757 hid_dbg(hdev, 758 "ignoring duplicate usage on incomplete"); 759 return; 760 } 761 usage = mt_allocate_usage(hdev, application); 762 if (!usage) 763 return; 764 765 target = (__s32 **)((char *)usage + offset); 766 } 767 768 *target = value; 769 } 770 771 #define MT_STORE_FIELD(__name) \ 772 mt_store_field(hdev, app, \ 773 &field->value[usage->usage_index], \ 774 offsetof(struct mt_usages, __name)) 775 776 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 777 struct hid_field *field, struct hid_usage *usage, 778 unsigned long **bit, int *max, struct mt_application *app) 779 { 780 struct mt_device *td = hid_get_drvdata(hdev); 781 struct mt_class *cls = &td->mtclass; 782 int code; 783 struct hid_usage *prev_usage = NULL; 784 785 /* 786 * Model touchscreens providing buttons as touchpads. 787 */ 788 if (field->application == HID_DG_TOUCHSCREEN && 789 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 790 app->mt_flags |= INPUT_MT_POINTER; 791 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 792 } 793 794 /* count the buttons on touchpads */ 795 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 796 app->buttons_count++; 797 798 if (usage->usage_index) 799 prev_usage = &field->usage[usage->usage_index - 1]; 800 801 switch (usage->hid & HID_USAGE_PAGE) { 802 803 case HID_UP_GENDESK: 804 switch (usage->hid) { 805 case HID_GD_X: 806 if (prev_usage && (prev_usage->hid == usage->hid)) { 807 code = ABS_MT_TOOL_X; 808 MT_STORE_FIELD(cx); 809 } else { 810 code = ABS_MT_POSITION_X; 811 MT_STORE_FIELD(x); 812 } 813 814 set_abs(hi->input, code, field, cls->sn_move); 815 816 /* 817 * A system multi-axis that exports X and Y has a high 818 * chance of being used directly on a surface 819 */ 820 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 821 __set_bit(INPUT_PROP_DIRECT, 822 hi->input->propbit); 823 input_set_abs_params(hi->input, 824 ABS_MT_TOOL_TYPE, 825 MT_TOOL_DIAL, 826 MT_TOOL_DIAL, 0, 0); 827 } 828 829 return 1; 830 case HID_GD_Y: 831 if (prev_usage && (prev_usage->hid == usage->hid)) { 832 code = ABS_MT_TOOL_Y; 833 MT_STORE_FIELD(cy); 834 } else { 835 code = ABS_MT_POSITION_Y; 836 MT_STORE_FIELD(y); 837 } 838 839 set_abs(hi->input, code, field, cls->sn_move); 840 841 return 1; 842 } 843 return 0; 844 845 case HID_UP_DIGITIZER: 846 switch (usage->hid) { 847 case HID_DG_INRANGE: 848 if (app->quirks & MT_QUIRK_HOVERING) { 849 input_set_abs_params(hi->input, 850 ABS_MT_DISTANCE, 0, 1, 0, 0); 851 } 852 MT_STORE_FIELD(inrange_state); 853 return 1; 854 case HID_DG_CONFIDENCE: 855 if ((cls->name == MT_CLS_WIN_8 || 856 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 857 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 858 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && 859 (field->application == HID_DG_TOUCHPAD || 860 field->application == HID_DG_TOUCHSCREEN)) 861 app->quirks |= MT_QUIRK_CONFIDENCE; 862 863 if (app->quirks & MT_QUIRK_CONFIDENCE) 864 input_set_abs_params(hi->input, 865 ABS_MT_TOOL_TYPE, 866 MT_TOOL_FINGER, 867 MT_TOOL_PALM, 0, 0); 868 869 MT_STORE_FIELD(confidence_state); 870 return 1; 871 case HID_DG_TOUCH: 872 /* 873 * Legacy devices use TIPSWITCH and not TOUCH. 874 * One special case here is of the Apple Touch Bars. 875 * In these devices, the tip state is contained in 876 * fields with the HID_DG_TOUCH usage. 877 * Let's just ignore this field for other devices. 878 */ 879 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 880 return -1; 881 fallthrough; 882 case HID_DG_TIPSWITCH: 883 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 884 input_set_capability(hi->input, 885 EV_KEY, BTN_TOUCH); 886 MT_STORE_FIELD(tip_state); 887 return 1; 888 case HID_DG_TRANSDUCER_INDEX: 889 /* 890 * Contact ID in case of Apple Touch Bars is contained 891 * in fields with HID_DG_TRANSDUCER_INDEX usage. 892 */ 893 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 894 return 0; 895 fallthrough; 896 case HID_DG_CONTACTID: 897 MT_STORE_FIELD(contactid); 898 app->touches_by_report++; 899 return 1; 900 case HID_DG_WIDTH: 901 if (!(app->quirks & MT_QUIRK_NO_AREA)) 902 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 903 cls->sn_width); 904 MT_STORE_FIELD(w); 905 return 1; 906 case HID_DG_HEIGHT: 907 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 908 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 909 cls->sn_height); 910 911 /* 912 * Only set ABS_MT_ORIENTATION if it is not 913 * already set by the HID_DG_AZIMUTH usage. 914 */ 915 if (!test_bit(ABS_MT_ORIENTATION, 916 hi->input->absbit)) 917 input_set_abs_params(hi->input, 918 ABS_MT_ORIENTATION, 0, 1, 0, 0); 919 } 920 MT_STORE_FIELD(h); 921 return 1; 922 case HID_DG_TIPPRESSURE: 923 set_abs(hi->input, ABS_MT_PRESSURE, field, 924 cls->sn_pressure); 925 td->is_haptic_touchpad = 926 hid_haptic_check_pressure_unit(td->haptic, 927 hi, field); 928 MT_STORE_FIELD(p); 929 return 1; 930 case HID_DG_SCANTIME: 931 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 932 app->scantime = &field->value[usage->usage_index]; 933 app->scantime_logical_max = field->logical_maximum; 934 return 1; 935 case HID_DG_CONTACTCOUNT: 936 app->have_contact_count = true; 937 app->raw_cc = &field->value[usage->usage_index]; 938 return 1; 939 case HID_DG_AZIMUTH: 940 /* 941 * Azimuth has the range of [0, MAX) representing a full 942 * revolution. Set ABS_MT_ORIENTATION to a quarter of 943 * MAX according the definition of ABS_MT_ORIENTATION 944 */ 945 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 946 -field->logical_maximum / 4, 947 field->logical_maximum / 4, 948 cls->sn_move ? 949 field->logical_maximum / cls->sn_move : 0, 0); 950 MT_STORE_FIELD(a); 951 return 1; 952 case HID_DG_CONTACTMAX: 953 /* contact max are global to the report */ 954 return -1; 955 } 956 /* let hid-input decide for the others */ 957 return 0; 958 959 case HID_UP_BUTTON: 960 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 961 /* 962 * MS PTP spec says that external buttons left and right have 963 * usages 2 and 3. 964 */ 965 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 966 field->application == HID_DG_TOUCHPAD && 967 (usage->hid & HID_USAGE) > 1) 968 code--; 969 970 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 971 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 972 973 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 974 if (!*bit) 975 return -1; 976 input_set_capability(hi->input, EV_KEY, code); 977 return 1; 978 979 case 0xff000000: 980 /* we do not want to map these: no input-oriented meaning */ 981 return -1; 982 } 983 984 return 0; 985 } 986 987 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 988 struct mt_usages *slot, 989 struct input_dev *input) 990 { 991 __s32 quirks = app->quirks; 992 993 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 994 return *slot->contactid; 995 996 if (quirks & MT_QUIRK_CYPRESS) 997 return cypress_compute_slot(app, slot); 998 999 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 1000 return app->num_received; 1001 1002 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 1003 return *slot->contactid - 1; 1004 1005 return input_mt_get_slot_by_key(input, *slot->contactid); 1006 } 1007 1008 static void mt_release_pending_palms(struct mt_device *td, 1009 struct mt_application *app, 1010 struct input_dev *input) 1011 { 1012 int slotnum; 1013 bool need_sync = false; 1014 1015 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 1016 clear_bit(slotnum, app->pending_palm_slots); 1017 clear_bit(slotnum, &td->mt_io_flags); 1018 1019 input_mt_slot(input, slotnum); 1020 input_mt_report_slot_inactive(input); 1021 1022 need_sync = true; 1023 } 1024 1025 if (need_sync) { 1026 input_mt_sync_frame(input); 1027 input_sync(input); 1028 } 1029 } 1030 1031 /* 1032 * this function is called when a whole packet has been received and processed, 1033 * so that it can decide what to send to the input layer. 1034 */ 1035 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1036 struct input_dev *input) 1037 { 1038 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1039 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1040 1041 input_mt_sync_frame(input); 1042 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1043 input_sync(input); 1044 1045 mt_release_pending_palms(td, app, input); 1046 1047 app->num_received = 0; 1048 app->left_button_state = 0; 1049 if (td->is_haptic_touchpad) 1050 hid_haptic_pressure_reset(td->haptic); 1051 } 1052 1053 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1054 { 1055 long delta = value - app->prev_scantime; 1056 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1057 1058 app->jiffies = jiffies; 1059 1060 if (delta < 0) 1061 delta += app->scantime_logical_max; 1062 1063 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1064 delta *= 100; 1065 1066 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1067 /* No data received for a while, resync the timestamp. */ 1068 return 0; 1069 else 1070 return app->timestamp + delta; 1071 } 1072 1073 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1074 struct hid_usage *usage, __s32 value) 1075 { 1076 /* we will handle the hidinput part later, now remains hiddev */ 1077 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1078 hid->hiddev_hid_event(hid, field, usage, value); 1079 1080 return 1; 1081 } 1082 1083 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1084 struct mt_application *app, 1085 struct mt_usages *slot) 1086 { 1087 struct input_mt *mt = input->mt; 1088 struct hid_device *hdev = td->hdev; 1089 __s32 quirks = app->quirks; 1090 bool valid = true; 1091 bool confidence_state = true; 1092 bool inrange_state = false; 1093 int active; 1094 int slotnum; 1095 int tool = MT_TOOL_FINGER; 1096 1097 if (!slot) 1098 return -EINVAL; 1099 1100 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1101 app->num_received >= app->num_expected) 1102 return -EAGAIN; 1103 1104 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1105 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1106 valid = *slot->inrange_state; 1107 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1108 valid = *slot->tip_state; 1109 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1110 valid = *slot->confidence_state; 1111 1112 if (!valid) 1113 return 0; 1114 } 1115 1116 slotnum = mt_compute_slot(td, app, slot, input); 1117 if (slotnum < 0 || slotnum >= td->maxcontacts) 1118 return 0; 1119 1120 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1121 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1122 1123 if (input_mt_is_active(i_slot) && 1124 input_mt_is_used(mt, i_slot)) 1125 return -EAGAIN; 1126 } 1127 1128 if (quirks & MT_QUIRK_CONFIDENCE) 1129 confidence_state = *slot->confidence_state; 1130 1131 if (quirks & MT_QUIRK_HOVERING) 1132 inrange_state = *slot->inrange_state; 1133 1134 active = *slot->tip_state || inrange_state; 1135 1136 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1137 tool = MT_TOOL_DIAL; 1138 else if (unlikely(!confidence_state)) { 1139 tool = MT_TOOL_PALM; 1140 if (!active && mt && 1141 input_mt_is_active(&mt->slots[slotnum])) { 1142 /* 1143 * The non-confidence was reported for 1144 * previously valid contact that is also no 1145 * longer valid. We can't simply report 1146 * lift-off as userspace will not be aware 1147 * of non-confidence, so we need to split 1148 * it into 2 events: active MT_TOOL_PALM 1149 * and a separate liftoff. 1150 */ 1151 active = true; 1152 set_bit(slotnum, app->pending_palm_slots); 1153 } 1154 } 1155 1156 input_mt_slot(input, slotnum); 1157 input_mt_report_slot_state(input, tool, active); 1158 if (active) { 1159 /* this finger is in proximity of the sensor */ 1160 int wide = (*slot->w > *slot->h); 1161 int major = max(*slot->w, *slot->h); 1162 int minor = min(*slot->w, *slot->h); 1163 int orientation = wide; 1164 int max_azimuth; 1165 int azimuth; 1166 int x; 1167 int y; 1168 int cx; 1169 int cy; 1170 1171 if (slot->a != DEFAULT_ZERO) { 1172 /* 1173 * Azimuth is counter-clockwise and ranges from [0, MAX) 1174 * (a full revolution). Convert it to clockwise ranging 1175 * [-MAX/2, MAX/2]. 1176 * 1177 * Note that ABS_MT_ORIENTATION require us to report 1178 * the limit of [-MAX/4, MAX/4], but the value can go 1179 * out of range to [-MAX/2, MAX/2] to report an upside 1180 * down ellipsis. 1181 */ 1182 azimuth = *slot->a; 1183 max_azimuth = input_abs_get_max(input, 1184 ABS_MT_ORIENTATION); 1185 if (azimuth > max_azimuth * 2) 1186 azimuth -= max_azimuth * 4; 1187 orientation = -azimuth; 1188 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1189 orientation = -orientation; 1190 1191 } 1192 1193 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1194 /* 1195 * divided by two to match visual scale of touch 1196 * for devices with this quirk 1197 */ 1198 major = major >> 1; 1199 minor = minor >> 1; 1200 } 1201 1202 if (td->is_haptic_touchpad) 1203 hid_haptic_pressure_increase(td->haptic, *slot->p); 1204 1205 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1206 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1207 *slot->x; 1208 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1209 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1210 *slot->y; 1211 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1212 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1213 *slot->cx; 1214 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1215 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1216 *slot->cy; 1217 1218 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1219 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1220 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1221 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1222 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1223 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1224 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1225 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1226 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1227 1228 set_bit(slotnum, &td->mt_io_flags); 1229 } else { 1230 clear_bit(slotnum, &td->mt_io_flags); 1231 } 1232 1233 return 0; 1234 } 1235 1236 static void mt_process_mt_event(struct hid_device *hid, 1237 struct mt_application *app, 1238 struct hid_field *field, 1239 struct hid_usage *usage, 1240 __s32 value, 1241 bool first_packet) 1242 { 1243 __s32 quirks = app->quirks; 1244 struct input_dev *input = field->hidinput->input; 1245 1246 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1247 return; 1248 1249 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1250 1251 /* 1252 * For Win8 PTP touchpads we should only look at 1253 * non finger/touch events in the first_packet of a 1254 * (possible) multi-packet frame. 1255 */ 1256 if (!first_packet) 1257 return; 1258 1259 /* 1260 * For Win8 PTP touchpads we map both the clickpad click 1261 * and any "external" left buttons to BTN_LEFT if a 1262 * device claims to have both we need to report 1 for 1263 * BTN_LEFT if either is pressed, so we or all values 1264 * together and report the result in mt_sync_frame(). 1265 */ 1266 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1267 app->left_button_state |= value; 1268 return; 1269 } 1270 } 1271 1272 input_event(input, usage->type, usage->code, value); 1273 } 1274 1275 static void mt_touch_report(struct hid_device *hid, 1276 struct mt_report_data *rdata) 1277 { 1278 struct mt_device *td = hid_get_drvdata(hid); 1279 struct hid_report *report = rdata->report; 1280 struct mt_application *app = rdata->application; 1281 struct hid_field *field; 1282 struct input_dev *input; 1283 struct mt_usages *slot; 1284 bool first_packet; 1285 unsigned count; 1286 int r, n; 1287 int scantime = 0; 1288 int contact_count = -1; 1289 1290 /* sticky fingers release in progress, abort */ 1291 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1292 return; 1293 1294 scantime = *app->scantime; 1295 app->timestamp = mt_compute_timestamp(app, scantime); 1296 if (app->raw_cc != DEFAULT_ZERO) 1297 contact_count = *app->raw_cc; 1298 1299 /* 1300 * Includes multi-packet support where subsequent 1301 * packets are sent with zero contactcount. 1302 */ 1303 if (contact_count >= 0) { 1304 /* 1305 * For Win8 PTPs the first packet (td->num_received == 0) may 1306 * have a contactcount of 0 if there only is a button event. 1307 * We double check that this is not a continuation packet 1308 * of a possible multi-packet frame be checking that the 1309 * timestamp has changed. 1310 */ 1311 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1312 app->num_received == 0 && 1313 app->prev_scantime != scantime) 1314 app->num_expected = contact_count; 1315 /* A non 0 contact count always indicates a first packet */ 1316 else if (contact_count) 1317 app->num_expected = contact_count; 1318 } 1319 app->prev_scantime = scantime; 1320 1321 first_packet = app->num_received == 0; 1322 1323 input = report->field[0]->hidinput->input; 1324 1325 list_for_each_entry(slot, &app->mt_usages, list) { 1326 if (!mt_process_slot(td, input, app, slot)) 1327 app->num_received++; 1328 } 1329 1330 for (r = 0; r < report->maxfield; r++) { 1331 field = report->field[r]; 1332 count = field->report_count; 1333 1334 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1335 continue; 1336 1337 for (n = 0; n < count; n++) 1338 mt_process_mt_event(hid, app, field, 1339 &field->usage[n], field->value[n], 1340 first_packet); 1341 } 1342 1343 if (app->num_received >= app->num_expected) 1344 mt_sync_frame(td, app, input); 1345 1346 /* 1347 * Windows 8 specs says 2 things: 1348 * - once a contact has been reported, it has to be reported in each 1349 * subsequent report 1350 * - the report rate when fingers are present has to be at least 1351 * the refresh rate of the screen, 60 or 120 Hz 1352 * 1353 * I interprete this that the specification forces a report rate of 1354 * at least 60 Hz for a touchscreen to be certified. 1355 * Which means that if we do not get a report whithin 16 ms, either 1356 * something wrong happens, either the touchscreen forgets to send 1357 * a release. Taking a reasonable margin allows to remove issues 1358 * with USB communication or the load of the machine. 1359 * 1360 * Given that Win 8 devices are forced to send a release, this will 1361 * only affect laggish machines and the ones that have a firmware 1362 * defect. 1363 */ 1364 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1365 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1366 mod_timer(&td->release_timer, 1367 jiffies + msecs_to_jiffies(100)); 1368 else 1369 timer_delete(&td->release_timer); 1370 } 1371 1372 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1373 } 1374 1375 static int mt_touch_input_configured(struct hid_device *hdev, 1376 struct hid_input *hi, 1377 struct mt_application *app) 1378 { 1379 struct mt_device *td = hid_get_drvdata(hdev); 1380 struct mt_class *cls = &td->mtclass; 1381 struct input_dev *input = hi->input; 1382 int ret; 1383 1384 /* 1385 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1386 * but the maximum contact count is greater than the default. 1387 */ 1388 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1389 td->maxcontacts = cls->maxcontacts; 1390 1391 if (!td->maxcontacts) 1392 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1393 1394 mt_post_parse(td, app); 1395 if (td->serial_maybe) 1396 mt_post_parse_default_settings(td, app); 1397 1398 /* 1399 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1400 * but these devices are direct. 1401 */ 1402 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1403 app->mt_flags |= INPUT_MT_DIRECT; 1404 1405 if (cls->is_indirect) 1406 app->mt_flags |= INPUT_MT_POINTER; 1407 1408 if (td->is_haptic_touchpad) 1409 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1410 1411 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1412 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1413 1414 /* check for clickpads */ 1415 if ((app->mt_flags & INPUT_MT_POINTER) && 1416 (app->buttons_count == 1)) 1417 td->is_buttonpad = true; 1418 1419 if (td->is_buttonpad) 1420 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1421 if (td->is_pressurepad) 1422 __set_bit(INPUT_PROP_PRESSUREPAD, input->propbit); 1423 1424 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1425 BITS_TO_LONGS(td->maxcontacts), 1426 sizeof(long), 1427 GFP_KERNEL); 1428 if (!app->pending_palm_slots) 1429 return -ENOMEM; 1430 1431 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1432 if (ret) 1433 return ret; 1434 1435 app->mt_flags = 0; 1436 return 0; 1437 } 1438 1439 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1440 max, EV_KEY, (c)) 1441 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1442 struct hid_field *field, struct hid_usage *usage, 1443 unsigned long **bit, int *max) 1444 { 1445 struct mt_device *td = hid_get_drvdata(hdev); 1446 struct mt_application *application; 1447 struct mt_report_data *rdata; 1448 int ret; 1449 1450 rdata = mt_find_report_data(td, field->report); 1451 if (!rdata) { 1452 hid_err(hdev, "failed to allocate data for report\n"); 1453 return 0; 1454 } 1455 1456 application = rdata->application; 1457 1458 /* 1459 * If mtclass.export_all_inputs is not set, only map fields from 1460 * TouchScreen or TouchPad collections. We need to ignore fields 1461 * that belong to other collections such as Mouse that might have 1462 * the same GenericDesktop usages. 1463 */ 1464 if (!td->mtclass.export_all_inputs && 1465 field->application != HID_DG_TOUCHSCREEN && 1466 field->application != HID_DG_PEN && 1467 field->application != HID_DG_TOUCHPAD && 1468 field->application != HID_GD_KEYBOARD && 1469 field->application != HID_GD_SYSTEM_CONTROL && 1470 field->application != HID_CP_CONSUMER_CONTROL && 1471 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1472 field->application != HID_GD_SYSTEM_MULTIAXIS && 1473 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1474 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1475 return -1; 1476 1477 /* 1478 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1479 * touchpad report descriptor. We need to treat these as an array to 1480 * map usages to input keys. 1481 */ 1482 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1483 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1484 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1485 set_bit(EV_REP, hi->input->evbit); 1486 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1487 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1488 switch (usage->hid & HID_USAGE) { 1489 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1490 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1491 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1492 case 0x6b: mt_map_key_clear(KEY_F21); break; 1493 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1494 default: 1495 return -1; 1496 } 1497 return 1; 1498 } 1499 1500 if (rdata->is_mt_collection) 1501 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1502 application); 1503 1504 /* 1505 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1506 * for the stylus. Overwrite the hid_input application 1507 */ 1508 if (field->physical == HID_DG_STYLUS) 1509 hi->application = HID_DG_STYLUS; 1510 1511 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1512 max); 1513 if (ret != 0) 1514 return ret; 1515 1516 /* let hid-core decide for the others */ 1517 return 0; 1518 } 1519 1520 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1521 struct hid_field *field, struct hid_usage *usage, 1522 unsigned long **bit, int *max) 1523 { 1524 struct mt_device *td = hid_get_drvdata(hdev); 1525 struct mt_report_data *rdata; 1526 1527 rdata = mt_find_report_data(td, field->report); 1528 if (rdata && rdata->is_mt_collection) { 1529 /* We own these mappings, tell hid-input to ignore them */ 1530 return -1; 1531 } 1532 1533 /* let hid-core decide for the others */ 1534 return 0; 1535 } 1536 1537 static int mt_event(struct hid_device *hid, struct hid_field *field, 1538 struct hid_usage *usage, __s32 value) 1539 { 1540 struct mt_device *td = hid_get_drvdata(hid); 1541 struct mt_report_data *rdata; 1542 1543 rdata = mt_find_report_data(td, field->report); 1544 if (rdata && rdata->is_mt_collection) 1545 return mt_touch_event(hid, field, usage, value); 1546 1547 return 0; 1548 } 1549 1550 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1551 unsigned int *size) 1552 { 1553 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1554 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1555 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1556 if (*size < 608) { 1557 dev_info( 1558 &hdev->dev, 1559 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1560 *size); 1561 return rdesc; 1562 } 1563 1564 if (rdesc[607] == 0x15) { 1565 rdesc[607] = 0x25; 1566 dev_info( 1567 &hdev->dev, 1568 "GT7868Q report descriptor fixup is applied.\n"); 1569 } else { 1570 dev_info( 1571 &hdev->dev, 1572 "The byte is not expected for fixing the report descriptor. \ 1573 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1574 got: %x\n", 1575 rdesc[607]); 1576 } 1577 } 1578 1579 return rdesc; 1580 } 1581 1582 static void mt_report(struct hid_device *hid, struct hid_report *report) 1583 { 1584 struct mt_device *td = hid_get_drvdata(hid); 1585 struct hid_field *field = report->field[0]; 1586 struct mt_report_data *rdata; 1587 1588 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1589 return; 1590 1591 rdata = mt_find_report_data(td, report); 1592 if (rdata && rdata->is_mt_collection) 1593 return mt_touch_report(hid, rdata); 1594 1595 /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */ 1596 if (rdata && rdata->application && 1597 (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) { 1598 1599 bool all_zero_report = true; 1600 1601 for (int f = 0; f < report->maxfield && all_zero_report; f++) { 1602 struct hid_field *fld = report->field[f]; 1603 1604 for (int i = 0; i < fld->report_count; i++) { 1605 unsigned int usage = fld->usage[i].hid; 1606 1607 if (usage == HID_DG_INRANGE || 1608 usage == HID_DG_TIPSWITCH || 1609 usage == HID_DG_BARRELSWITCH || 1610 usage == HID_DG_BARRELSWITCH2 || 1611 usage == HID_DG_CONTACTID || 1612 usage == HID_DG_TILT_X || 1613 usage == HID_DG_TILT_Y) { 1614 1615 if (fld->value[i] != 0) { 1616 all_zero_report = false; 1617 break; 1618 } 1619 } 1620 } 1621 } 1622 1623 if (all_zero_report) 1624 return; 1625 } 1626 1627 if (field && field->hidinput && field->hidinput->input) 1628 input_sync(field->hidinput->input); 1629 } 1630 1631 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1632 struct hid_field *field, 1633 struct hid_usage *usage, 1634 enum latency_mode latency, 1635 enum report_mode report_mode, 1636 bool *inputmode_found) 1637 { 1638 struct mt_device *td = hid_get_drvdata(hdev); 1639 struct mt_class *cls = &td->mtclass; 1640 struct hid_report *report = field->report; 1641 unsigned int index = usage->usage_index; 1642 char *buf; 1643 u32 report_len; 1644 int max; 1645 1646 switch (usage->hid) { 1647 case HID_DG_INPUTMODE: 1648 /* 1649 * Some elan panels wrongly declare 2 input mode features, 1650 * and silently ignore when we set the value in the second 1651 * field. Skip the second feature and hope for the best. 1652 */ 1653 if (*inputmode_found) 1654 return false; 1655 1656 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1657 report_len = hid_report_len(report); 1658 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1659 if (!buf) { 1660 hid_err(hdev, 1661 "failed to allocate buffer for report\n"); 1662 return false; 1663 } 1664 hid_hw_raw_request(hdev, report->id, buf, report_len, 1665 HID_FEATURE_REPORT, 1666 HID_REQ_GET_REPORT); 1667 kfree(buf); 1668 } 1669 1670 field->value[index] = td->inputmode_value; 1671 *inputmode_found = true; 1672 return true; 1673 1674 case HID_DG_CONTACTMAX: 1675 if (cls->maxcontacts) { 1676 max = min_t(int, field->logical_maximum, 1677 cls->maxcontacts); 1678 if (field->value[index] != max) { 1679 field->value[index] = max; 1680 return true; 1681 } 1682 } 1683 break; 1684 1685 case HID_DG_LATENCYMODE: 1686 field->value[index] = latency; 1687 return true; 1688 1689 case HID_DG_SURFACESWITCH: 1690 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1691 return true; 1692 1693 case HID_DG_BUTTONSWITCH: 1694 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1695 return true; 1696 } 1697 1698 return false; /* no need to update the report */ 1699 } 1700 1701 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1702 enum report_mode report_mode) 1703 { 1704 struct hid_report_enum *rep_enum; 1705 struct hid_report *rep; 1706 struct hid_usage *usage; 1707 int i, j; 1708 bool update_report; 1709 bool inputmode_found = false; 1710 1711 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1712 list_for_each_entry(rep, &rep_enum->report_list, list) { 1713 update_report = false; 1714 1715 for (i = 0; i < rep->maxfield; i++) { 1716 /* Ignore if report count is out of bounds. */ 1717 if (rep->field[i]->report_count < 1) 1718 continue; 1719 1720 for (j = 0; j < rep->field[i]->maxusage; j++) { 1721 usage = &rep->field[i]->usage[j]; 1722 1723 if (mt_need_to_apply_feature(hdev, 1724 rep->field[i], 1725 usage, 1726 latency, 1727 report_mode, 1728 &inputmode_found)) 1729 update_report = true; 1730 } 1731 } 1732 1733 if (update_report) 1734 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1735 } 1736 } 1737 1738 static void mt_post_parse_default_settings(struct mt_device *td, 1739 struct mt_application *app) 1740 { 1741 __s32 quirks = app->quirks; 1742 1743 /* unknown serial device needs special quirks */ 1744 if (list_is_singular(&app->mt_usages)) { 1745 quirks |= MT_QUIRK_ALWAYS_VALID; 1746 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1747 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1748 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1749 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1750 } 1751 1752 app->quirks = quirks; 1753 } 1754 1755 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1756 { 1757 if (!app->have_contact_count) 1758 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1759 } 1760 1761 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1762 { 1763 struct mt_device *td = hid_get_drvdata(hdev); 1764 const char *suffix = NULL; 1765 struct mt_report_data *rdata; 1766 struct mt_application *mt_application = NULL; 1767 struct hid_report *report; 1768 int ret; 1769 1770 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1771 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT)) { 1772 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1773 td->is_haptic_touchpad = false; 1774 } else { 1775 td->is_haptic_touchpad = false; 1776 } 1777 1778 list_for_each_entry(report, &hi->reports, hidinput_list) { 1779 rdata = mt_find_report_data(td, report); 1780 if (!rdata) { 1781 hid_err(hdev, "failed to allocate data for report\n"); 1782 return -ENOMEM; 1783 } 1784 1785 mt_application = rdata->application; 1786 1787 if (rdata->is_mt_collection) { 1788 ret = mt_touch_input_configured(hdev, hi, 1789 mt_application); 1790 if (ret) 1791 return ret; 1792 } 1793 } 1794 1795 switch (hi->application) { 1796 case HID_GD_KEYBOARD: 1797 case HID_GD_KEYPAD: 1798 case HID_GD_MOUSE: 1799 case HID_DG_TOUCHPAD: 1800 case HID_GD_SYSTEM_CONTROL: 1801 case HID_CP_CONSUMER_CONTROL: 1802 case HID_GD_WIRELESS_RADIO_CTLS: 1803 case HID_GD_SYSTEM_MULTIAXIS: 1804 case HID_DG_PEN: 1805 /* already handled by hid core */ 1806 break; 1807 case HID_DG_TOUCHSCREEN: 1808 /* we do not set suffix = "Touchscreen" */ 1809 hi->input->name = hdev->name; 1810 break; 1811 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1812 suffix = "Custom Media Keys"; 1813 break; 1814 case HID_DG_STYLUS: 1815 /* force BTN_STYLUS to allow tablet matching in udev */ 1816 __set_bit(BTN_STYLUS, hi->input->keybit); 1817 break; 1818 default: 1819 suffix = "UNKNOWN"; 1820 break; 1821 } 1822 1823 /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */ 1824 if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) { 1825 switch (hi->report->id) { 1826 case 48: 1827 suffix = "Touchscreen Top"; 1828 break; 1829 case 56: 1830 suffix = "Touchscreen Bottom"; 1831 break; 1832 case 20: 1833 suffix = "Stylus Top"; 1834 break; 1835 case 40: 1836 suffix = "Stylus Bottom"; 1837 break; 1838 case 80: 1839 suffix = "Emulated Touchpad"; 1840 break; 1841 default: 1842 suffix = ""; 1843 break; 1844 } 1845 } 1846 1847 if (suffix) { 1848 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1849 "%s %s", hdev->name, suffix); 1850 if (!hi->input->name) 1851 return -ENOMEM; 1852 } 1853 1854 return 0; 1855 } 1856 1857 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1858 { 1859 if (field->usage[0].hid != usage || 1860 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1861 return; 1862 1863 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1864 field->flags |= HID_MAIN_ITEM_VARIABLE; 1865 } 1866 1867 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1868 { 1869 struct hid_report *report; 1870 int i; 1871 1872 list_for_each_entry(report, 1873 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1874 list) { 1875 1876 if (!report->maxfield) 1877 continue; 1878 1879 for (i = 0; i < report->maxfield; i++) 1880 if (report->field[i]->maxusage >= 1) 1881 mt_fix_const_field(report->field[i], usage); 1882 } 1883 } 1884 1885 static void mt_release_contacts(struct hid_device *hid) 1886 { 1887 struct hid_input *hidinput; 1888 struct mt_application *application; 1889 struct mt_device *td = hid_get_drvdata(hid); 1890 1891 list_for_each_entry(hidinput, &hid->inputs, list) { 1892 struct input_dev *input_dev = hidinput->input; 1893 struct input_mt *mt = input_dev->mt; 1894 int i; 1895 1896 if (mt) { 1897 for (i = 0; i < mt->num_slots; i++) { 1898 input_mt_slot(input_dev, i); 1899 input_mt_report_slot_inactive(input_dev); 1900 clear_bit(i, &td->mt_io_flags); 1901 } 1902 input_mt_sync_frame(input_dev); 1903 input_sync(input_dev); 1904 } 1905 } 1906 1907 list_for_each_entry(application, &td->applications, list) { 1908 application->num_received = 0; 1909 } 1910 } 1911 1912 static void mt_expired_timeout(struct timer_list *t) 1913 { 1914 struct mt_device *td = timer_container_of(td, t, release_timer); 1915 struct hid_device *hdev = td->hdev; 1916 1917 /* 1918 * An input report came in just before we release the sticky fingers, 1919 * it will take care of the sticky fingers. 1920 */ 1921 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1922 return; 1923 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1924 mt_release_contacts(hdev); 1925 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1926 } 1927 1928 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1929 { 1930 int ret, i; 1931 struct mt_device *td; 1932 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1933 1934 for (i = 0; mt_classes[i].name ; i++) { 1935 if (id->driver_data == mt_classes[i].name) { 1936 mtclass = &(mt_classes[i]); 1937 break; 1938 } 1939 } 1940 1941 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1942 if (!td) { 1943 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1944 return -ENOMEM; 1945 } 1946 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL); 1947 if (!td->haptic) 1948 return -ENOMEM; 1949 1950 td->haptic->hdev = hdev; 1951 td->hdev = hdev; 1952 td->mtclass = *mtclass; 1953 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1954 hid_set_drvdata(hdev, td); 1955 1956 INIT_LIST_HEAD(&td->applications); 1957 INIT_LIST_HEAD(&td->reports); 1958 1959 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1960 td->serial_maybe = true; 1961 1962 1963 /* Orientation is inverted if the X or Y axes are 1964 * flipped, but normalized if both are inverted. 1965 */ 1966 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1967 !((hdev->quirks & HID_QUIRK_X_INVERT) 1968 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1969 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1970 1971 /* This allows the driver to correctly support devices 1972 * that emit events over several HID messages. 1973 */ 1974 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1975 1976 /* 1977 * This allows the driver to handle different input sensors 1978 * that emits events through different applications on the same HID 1979 * device. 1980 */ 1981 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 1982 1983 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 1984 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1985 1986 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 1987 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 1988 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1989 } 1990 1991 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1992 1993 ret = hid_parse(hdev); 1994 if (ret != 0) 1995 return ret; 1996 1997 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 1998 !hid_find_field(hdev, HID_INPUT_REPORT, 1999 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 2000 return -ENODEV; 2001 2002 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 2003 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 2004 2005 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 2006 hdev->quirks |= HID_QUIRK_NOGET; 2007 2008 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 2009 if (ret) 2010 return ret; 2011 2012 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 2013 if (ret) 2014 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 2015 hdev->name); 2016 2017 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2018 2019 if (td->is_haptic_touchpad) { 2020 if (hid_haptic_init(hdev, &td->haptic)) { 2021 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n", 2022 hdev->name); 2023 td->is_haptic_touchpad = false; 2024 devm_kfree(&hdev->dev, td->haptic); 2025 } 2026 } else { 2027 devm_kfree(&hdev->dev, td->haptic); 2028 } 2029 2030 return 0; 2031 } 2032 2033 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 2034 { 2035 struct mt_device *td = hid_get_drvdata(hdev); 2036 2037 /* High latency is desirable for power savings during S3/S0ix */ 2038 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 2039 !hid_hw_may_wakeup(hdev)) 2040 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2041 else 2042 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 2043 2044 return 0; 2045 } 2046 2047 static int mt_reset_resume(struct hid_device *hdev) 2048 { 2049 mt_release_contacts(hdev); 2050 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2051 return 0; 2052 } 2053 2054 static int mt_resume(struct hid_device *hdev) 2055 { 2056 /* Some Elan legacy devices require SET_IDLE to be set on resume. 2057 * It should be safe to send it to other devices too. 2058 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 2059 2060 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 2061 2062 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2063 2064 return 0; 2065 } 2066 2067 static void mt_remove(struct hid_device *hdev) 2068 { 2069 struct mt_device *td = hid_get_drvdata(hdev); 2070 2071 timer_delete_sync(&td->release_timer); 2072 2073 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 2074 hid_hw_stop(hdev); 2075 } 2076 2077 static void mt_on_hid_hw_open(struct hid_device *hdev) 2078 { 2079 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2080 } 2081 2082 static void mt_on_hid_hw_close(struct hid_device *hdev) 2083 { 2084 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2085 } 2086 2087 /* 2088 * This list contains only: 2089 * - VID/PID of products not working with the default multitouch handling 2090 * - 2 generic rules. 2091 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2092 */ 2093 static const struct hid_device_id mt_devices[] = { 2094 2095 /* 3M panels */ 2096 { .driver_data = MT_CLS_3M, 2097 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2098 USB_DEVICE_ID_3M1968) }, 2099 { .driver_data = MT_CLS_3M, 2100 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2101 USB_DEVICE_ID_3M2256) }, 2102 { .driver_data = MT_CLS_3M, 2103 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2104 USB_DEVICE_ID_3M3266) }, 2105 2106 /* Anton devices */ 2107 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2108 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2109 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2110 2111 /* Asus T101HA */ 2112 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2113 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2114 USB_VENDOR_ID_ASUSTEK, 2115 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2116 2117 /* Asus T304UA */ 2118 { .driver_data = MT_CLS_ASUS, 2119 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2120 USB_VENDOR_ID_ASUSTEK, 2121 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2122 2123 /* Atmel panels */ 2124 { .driver_data = MT_CLS_SERIAL, 2125 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2126 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2127 2128 /* Baanto multitouch devices */ 2129 { .driver_data = MT_CLS_NSMU, 2130 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2131 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2132 2133 /* Cando panels */ 2134 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2135 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2136 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2137 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2138 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2139 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2140 2141 /* Chunghwa Telecom touch panels */ 2142 { .driver_data = MT_CLS_NSMU, 2143 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2144 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2145 2146 /* CJTouch panels */ 2147 { .driver_data = MT_CLS_NSMU, 2148 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2149 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2150 { .driver_data = MT_CLS_NSMU, 2151 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2152 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2153 2154 /* CVTouch panels */ 2155 { .driver_data = MT_CLS_NSMU, 2156 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2157 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2158 2159 /* eGalax devices (SAW) */ 2160 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2161 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2162 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2163 2164 /* eGalax devices (resistive) */ 2165 { .driver_data = MT_CLS_EGALAX, 2166 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2167 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2168 { .driver_data = MT_CLS_EGALAX, 2169 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2170 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2171 2172 /* eGalax devices (capacitive) */ 2173 { .driver_data = MT_CLS_EGALAX_SERIAL, 2174 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2175 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2176 { .driver_data = MT_CLS_EGALAX, 2177 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2178 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2179 { .driver_data = MT_CLS_EGALAX_SERIAL, 2180 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2181 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2182 { .driver_data = MT_CLS_EGALAX_SERIAL, 2183 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2184 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2185 { .driver_data = MT_CLS_EGALAX_SERIAL, 2186 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2187 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2188 { .driver_data = MT_CLS_EGALAX_SERIAL, 2189 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2190 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2191 { .driver_data = MT_CLS_EGALAX, 2192 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2193 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2194 { .driver_data = MT_CLS_EGALAX, 2195 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2196 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2197 { .driver_data = MT_CLS_EGALAX_SERIAL, 2198 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2199 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2200 { .driver_data = MT_CLS_EGALAX, 2201 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2202 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2203 { .driver_data = MT_CLS_EGALAX, 2204 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2205 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2206 { .driver_data = MT_CLS_EGALAX, 2207 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2208 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2209 { .driver_data = MT_CLS_EGALAX, 2210 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2211 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2212 { .driver_data = MT_CLS_EGALAX_SERIAL, 2213 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2214 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2215 { .driver_data = MT_CLS_EGALAX_SERIAL, 2216 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2217 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2218 { .driver_data = MT_CLS_EGALAX_SERIAL, 2219 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2220 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2221 { .driver_data = MT_CLS_EGALAX_SERIAL, 2222 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2223 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C000) }, 2224 { .driver_data = MT_CLS_EGALAX_P80H84, 2225 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2226 USB_VENDOR_ID_DWAV, 2227 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2228 2229 /* Elan devices */ 2230 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2231 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2232 USB_VENDOR_ID_ELAN, 0x313a) }, 2233 2234 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2235 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2236 USB_VENDOR_ID_ELAN, 0x3148) }, 2237 2238 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2239 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2240 USB_VENDOR_ID_ELAN, 0x32ae) }, 2241 2242 /* Elitegroup panel */ 2243 { .driver_data = MT_CLS_SERIAL, 2244 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2245 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2246 2247 /* Flatfrog Panels */ 2248 { .driver_data = MT_CLS_FLATFROG, 2249 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2250 USB_DEVICE_ID_MULTITOUCH_3200) }, 2251 2252 /* FocalTech Panels */ 2253 { .driver_data = MT_CLS_SERIAL, 2254 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2255 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2256 2257 /* GeneralTouch panel */ 2258 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2259 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2260 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2261 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2262 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2263 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2264 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2265 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2266 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2267 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2268 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2269 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2270 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2271 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2272 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2273 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2274 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2275 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2276 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2277 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2278 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2279 2280 /* Gametel game controller */ 2281 { .driver_data = MT_CLS_NSMU, 2282 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2283 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2284 2285 /* Goodix GT7868Q devices */ 2286 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2287 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2288 I2C_DEVICE_ID_GOODIX_01E8) }, 2289 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2290 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2291 I2C_DEVICE_ID_GOODIX_01E9) }, 2292 2293 /* GoodTouch panels */ 2294 { .driver_data = MT_CLS_NSMU, 2295 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2296 USB_DEVICE_ID_GOODTOUCH_000f) }, 2297 2298 /* Hanvon panels */ 2299 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2300 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2301 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2302 2303 /* HONOR GLO-GXXX panel */ 2304 { .driver_data = MT_CLS_VTL, 2305 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2306 0x347d, 0x7853) }, 2307 2308 /* HONOR MagicBook Art 14 touchpad */ 2309 { .driver_data = MT_CLS_VTL, 2310 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2311 0x35cc, 0x0104) }, 2312 2313 /* Ilitek dual touch panel */ 2314 { .driver_data = MT_CLS_NSMU, 2315 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2316 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2317 2318 /* LG Melfas panel */ 2319 { .driver_data = MT_CLS_LG, 2320 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2321 USB_DEVICE_ID_LG_MELFAS_MT) }, 2322 { .driver_data = MT_CLS_LG, 2323 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2324 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2325 2326 /* Lenovo X1 TAB Gen 1 */ 2327 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2328 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2329 USB_VENDOR_ID_LENOVO, 2330 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2331 2332 /* Lenovo X1 TAB Gen 2 */ 2333 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2334 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2335 USB_VENDOR_ID_LENOVO, 2336 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2337 2338 /* Lenovo X1 TAB Gen 3 */ 2339 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2340 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2341 USB_VENDOR_ID_LENOVO, 2342 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2343 2344 /* Lenovo X12 TAB Gen 1 */ 2345 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2346 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2347 USB_VENDOR_ID_LENOVO, 2348 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2349 2350 /* Lenovo X12 TAB Gen 2 */ 2351 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2352 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2353 USB_VENDOR_ID_LENOVO, 2354 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2355 2356 /* Lenovo Yoga Book 9i */ 2357 { .driver_data = MT_CLS_YOGABOOK9I, 2358 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2359 USB_VENDOR_ID_LENOVO, 2360 USB_DEVICE_ID_LENOVO_YOGABOOK9I) }, 2361 2362 /* Logitech devices */ 2363 { .driver_data = MT_CLS_NSMU, 2364 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2365 USB_VENDOR_ID_LOGITECH, 2366 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2367 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2368 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2369 USB_VENDOR_ID_LOGITECH, 2370 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2371 2372 /* MosArt panels */ 2373 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2374 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2375 USB_DEVICE_ID_ASUS_T91MT)}, 2376 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2377 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2378 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2379 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2380 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2381 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2382 2383 /* Novatek Panel */ 2384 { .driver_data = MT_CLS_NSMU, 2385 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2386 USB_DEVICE_ID_NOVATEK_PCT) }, 2387 2388 /* Ntrig Panel */ 2389 { .driver_data = MT_CLS_NSMU, 2390 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2391 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2392 2393 /* Panasonic panels */ 2394 { .driver_data = MT_CLS_PANASONIC, 2395 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2396 USB_DEVICE_ID_PANABOARD_UBT780) }, 2397 { .driver_data = MT_CLS_PANASONIC, 2398 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2399 USB_DEVICE_ID_PANABOARD_UBT880) }, 2400 2401 /* PixArt optical touch screen */ 2402 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2403 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2404 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2405 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2406 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2407 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2408 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2409 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2410 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2411 2412 /* PixCir-based panels */ 2413 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2414 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2415 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2416 2417 /* Quanta-based panels */ 2418 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2419 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2420 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2421 2422 /* Razer touchpads */ 2423 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2424 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2425 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2426 2427 /* Smart Tech panels */ 2428 { .driver_data = MT_CLS_SMART_TECH, 2429 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2430 2431 /* Stantum panels */ 2432 { .driver_data = MT_CLS_CONFIDENCE, 2433 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2434 USB_DEVICE_ID_MTP_STM)}, 2435 2436 /* Synaptics devices */ 2437 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2438 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2439 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2440 2441 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2442 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2443 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2444 2445 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2446 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2447 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2448 2449 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2450 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2451 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2452 2453 /* TopSeed panels */ 2454 { .driver_data = MT_CLS_TOPSEED, 2455 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2456 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2457 2458 /* Touch International panels */ 2459 { .driver_data = MT_CLS_NSMU, 2460 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2461 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2462 2463 /* Unitec panels */ 2464 { .driver_data = MT_CLS_NSMU, 2465 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2466 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2467 { .driver_data = MT_CLS_NSMU, 2468 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2469 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2470 2471 /* VTL panels */ 2472 { .driver_data = MT_CLS_VTL, 2473 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2474 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2475 2476 /* Winbond Electronics Corp. */ 2477 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2478 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2479 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2480 2481 /* Wistron panels */ 2482 { .driver_data = MT_CLS_NSMU, 2483 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2484 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2485 2486 /* XAT */ 2487 { .driver_data = MT_CLS_NSMU, 2488 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2489 USB_DEVICE_ID_XAT_CSR) }, 2490 2491 /* Xiroku */ 2492 { .driver_data = MT_CLS_NSMU, 2493 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2494 USB_DEVICE_ID_XIROKU_SPX) }, 2495 { .driver_data = MT_CLS_NSMU, 2496 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2497 USB_DEVICE_ID_XIROKU_MPX) }, 2498 { .driver_data = MT_CLS_NSMU, 2499 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2500 USB_DEVICE_ID_XIROKU_CSR) }, 2501 { .driver_data = MT_CLS_NSMU, 2502 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2503 USB_DEVICE_ID_XIROKU_SPX1) }, 2504 { .driver_data = MT_CLS_NSMU, 2505 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2506 USB_DEVICE_ID_XIROKU_MPX1) }, 2507 { .driver_data = MT_CLS_NSMU, 2508 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2509 USB_DEVICE_ID_XIROKU_CSR1) }, 2510 { .driver_data = MT_CLS_NSMU, 2511 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2512 USB_DEVICE_ID_XIROKU_SPX2) }, 2513 { .driver_data = MT_CLS_NSMU, 2514 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2515 USB_DEVICE_ID_XIROKU_MPX2) }, 2516 { .driver_data = MT_CLS_NSMU, 2517 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2518 USB_DEVICE_ID_XIROKU_CSR2) }, 2519 2520 /* Apple Touch Bar */ 2521 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2522 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2523 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2524 2525 /* Google MT devices */ 2526 { .driver_data = MT_CLS_GOOGLE, 2527 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2528 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2529 { .driver_data = MT_CLS_GOOGLE, 2530 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2531 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2532 2533 /* sis */ 2534 { .driver_data = MT_CLS_SIS, 2535 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2536 HID_ANY_ID) }, 2537 2538 /* Hantick */ 2539 { .driver_data = MT_CLS_NSMU, 2540 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2541 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2542 2543 /* Generic MT device */ 2544 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2545 2546 /* Generic Win 8 certified MT device */ 2547 { .driver_data = MT_CLS_WIN_8, 2548 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2549 HID_ANY_ID, HID_ANY_ID) }, 2550 { } 2551 }; 2552 MODULE_DEVICE_TABLE(hid, mt_devices); 2553 2554 static const struct hid_usage_id mt_grabbed_usages[] = { 2555 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2556 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2557 }; 2558 2559 static struct hid_driver mt_driver = { 2560 .name = "hid-multitouch", 2561 .id_table = mt_devices, 2562 .probe = mt_probe, 2563 .remove = mt_remove, 2564 .input_mapping = mt_input_mapping, 2565 .input_mapped = mt_input_mapped, 2566 .input_configured = mt_input_configured, 2567 .feature_mapping = mt_feature_mapping, 2568 .usage_table = mt_grabbed_usages, 2569 .event = mt_event, 2570 .report_fixup = mt_report_fixup, 2571 .report = mt_report, 2572 .suspend = pm_ptr(mt_suspend), 2573 .reset_resume = pm_ptr(mt_reset_resume), 2574 .resume = pm_ptr(mt_resume), 2575 .on_hid_hw_open = mt_on_hid_hw_open, 2576 .on_hid_hw_close = mt_on_hid_hw_close, 2577 }; 2578 module_hid_driver(mt_driver); 2579