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 #define MT_QUIRK_KEEP_LATENCY_ON_CLOSE BIT(25) 81 82 #define MT_INPUTMODE_TOUCHSCREEN 0x02 83 #define MT_INPUTMODE_TOUCHPAD 0x03 84 85 #define MT_BUTTONTYPE_CLICKPAD 0 86 #define MT_BUTTONTYPE_PRESSUREPAD 1 87 88 enum latency_mode { 89 HID_LATENCY_NORMAL = 0, 90 HID_LATENCY_HIGH = 1, 91 }; 92 93 enum report_mode { 94 TOUCHPAD_REPORT_NONE = 0, 95 TOUCHPAD_REPORT_BUTTONS = BIT(0), 96 TOUCHPAD_REPORT_CONTACTS = BIT(1), 97 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS, 98 }; 99 100 #define MT_IO_SLOTS_MASK GENMASK(7, 0) /* reserve first 8 bits for slot tracking */ 101 #define MT_IO_FLAGS_RUNNING 32 102 103 static const bool mtrue = true; /* default for true */ 104 static const bool mfalse; /* default for false */ 105 static const __s32 mzero; /* default for 0 */ 106 107 #define DEFAULT_TRUE ((void *)&mtrue) 108 #define DEFAULT_FALSE ((void *)&mfalse) 109 #define DEFAULT_ZERO ((void *)&mzero) 110 111 struct mt_usages { 112 struct list_head list; 113 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a; 114 __s32 *contactid; /* the device ContactID assigned to this slot */ 115 bool *tip_state; /* is the touch valid? */ 116 bool *inrange_state; /* is the finger in proximity of the sensor? */ 117 bool *confidence_state; /* is the touch made by a finger? */ 118 }; 119 120 struct mt_application { 121 struct list_head list; 122 unsigned int application; 123 unsigned int report_id; 124 struct list_head mt_usages; /* mt usages list */ 125 126 __s32 quirks; 127 128 __s32 *scantime; /* scantime reported */ 129 __s32 scantime_logical_max; /* max value for raw scantime */ 130 131 __s32 *raw_cc; /* contact count in the report */ 132 int left_button_state; /* left button state */ 133 unsigned int mt_flags; /* flags to pass to input-mt */ 134 135 unsigned long *pending_palm_slots; /* slots where we reported palm 136 * and need to release */ 137 138 __u8 num_received; /* how many contacts we received */ 139 __u8 num_expected; /* expected last contact index */ 140 __u8 buttons_count; /* number of physical buttons per touchpad */ 141 __u8 touches_by_report; /* how many touches are present in one report: 142 * 1 means we should use a serial protocol 143 * > 1 means hybrid (multitouch) protocol 144 */ 145 146 unsigned long jiffies; /* the frame's jiffies */ 147 int timestamp; /* the timestamp to be sent */ 148 int prev_scantime; /* scantime reported previously */ 149 150 bool have_contact_count; 151 }; 152 153 struct mt_class { 154 __s32 name; /* MT_CLS */ 155 __s32 quirks; 156 __s32 sn_move; /* Signal/noise ratio for move events */ 157 __s32 sn_width; /* Signal/noise ratio for width events */ 158 __s32 sn_height; /* Signal/noise ratio for height events */ 159 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 160 __u8 maxcontacts; 161 bool is_indirect; /* true for touchpads */ 162 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 163 }; 164 165 struct mt_report_data { 166 struct list_head list; 167 struct hid_report *report; 168 struct mt_application *application; 169 bool is_mt_collection; 170 }; 171 172 struct mt_device { 173 struct mt_class mtclass; /* our mt device class */ 174 struct timer_list release_timer; /* to release sticky fingers */ 175 struct hid_haptic_device *haptic; /* haptic related configuration */ 176 struct hid_device *hdev; /* hid_device we're attached to */ 177 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_RUNNING) 178 * first 8 bits are reserved for keeping the slot 179 * states, this is fine because we only support up 180 * to 250 slots (MT_MAX_MAXCONTACT) 181 */ 182 __u8 inputmode_value; /* InputMode HID feature value */ 183 __u8 maxcontacts; 184 bool is_buttonpad; /* is this device a button pad? */ 185 bool is_pressurepad; /* is this device a pressurepad? */ 186 bool is_haptic_touchpad; /* is this device a haptic touchpad? */ 187 bool serial_maybe; /* need to check for serial protocol */ 188 189 struct list_head applications; 190 struct list_head reports; 191 }; 192 193 static void mt_post_parse_default_settings(struct mt_device *td, 194 struct mt_application *app); 195 static void mt_post_parse(struct mt_device *td, struct mt_application *app); 196 197 /* classes of device behavior */ 198 #define MT_CLS_DEFAULT 0x0001 199 200 #define MT_CLS_SERIAL 0x0002 201 #define MT_CLS_CONFIDENCE 0x0003 202 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 203 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 204 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 205 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 206 /* reserved 0x0008 */ 207 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 208 #define MT_CLS_NSMU 0x000a 209 /* reserved 0x0010 */ 210 /* reserved 0x0011 */ 211 #define MT_CLS_WIN_8 0x0012 212 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 213 /* reserved 0x0014 */ 214 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 215 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 216 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017 217 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018 218 #define MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE 0x0019 219 220 /* vendor specific classes */ 221 #define MT_CLS_3M 0x0101 222 /* reserved 0x0102 */ 223 #define MT_CLS_EGALAX 0x0103 224 #define MT_CLS_EGALAX_SERIAL 0x0104 225 #define MT_CLS_TOPSEED 0x0105 226 #define MT_CLS_PANASONIC 0x0106 227 #define MT_CLS_FLATFROG 0x0107 228 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 229 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 230 #define MT_CLS_LG 0x010a 231 #define MT_CLS_ASUS 0x010b 232 #define MT_CLS_VTL 0x0110 233 #define MT_CLS_GOOGLE 0x0111 234 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 235 #define MT_CLS_SMART_TECH 0x0113 236 #define MT_CLS_APPLE_TOUCHBAR 0x0114 237 #define MT_CLS_YOGABOOK9I 0x0115 238 #define MT_CLS_EGALAX_P80H84 0x0116 239 #define MT_CLS_SIS 0x0457 240 241 #define MT_DEFAULT_MAXCONTACT 10 242 #define MT_MAX_MAXCONTACT 250 243 244 /* 245 * Resync device and local timestamps after that many microseconds without 246 * receiving data. 247 */ 248 #define MAX_TIMESTAMP_INTERVAL 1000000 249 250 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 251 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 252 253 /* 254 * these device-dependent functions determine what slot corresponds 255 * to a valid contact that was just read. 256 */ 257 258 static int cypress_compute_slot(struct mt_application *application, 259 struct mt_usages *slot) 260 { 261 if (*slot->contactid != 0 || application->num_received == 0) 262 return *slot->contactid; 263 else 264 return -1; 265 } 266 267 static const struct mt_class mt_classes[] = { 268 { .name = MT_CLS_DEFAULT, 269 .quirks = MT_QUIRK_ALWAYS_VALID | 270 MT_QUIRK_CONTACT_CNT_ACCURATE }, 271 { .name = MT_CLS_NSMU, 272 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 273 { .name = MT_CLS_SERIAL, 274 .quirks = MT_QUIRK_ALWAYS_VALID}, 275 { .name = MT_CLS_CONFIDENCE, 276 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 277 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 278 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 279 MT_QUIRK_SLOT_IS_CONTACTID }, 280 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 281 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 282 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 283 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 284 .quirks = MT_QUIRK_VALID_IS_INRANGE | 285 MT_QUIRK_SLOT_IS_CONTACTID, 286 .maxcontacts = 2 }, 287 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 288 .quirks = MT_QUIRK_VALID_IS_INRANGE | 289 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 290 .maxcontacts = 2 }, 291 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 292 .quirks = MT_QUIRK_VALID_IS_INRANGE | 293 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 294 { .name = MT_CLS_WIN_8, 295 .quirks = MT_QUIRK_ALWAYS_VALID | 296 MT_QUIRK_IGNORE_DUPLICATES | 297 MT_QUIRK_HOVERING | 298 MT_QUIRK_CONTACT_CNT_ACCURATE | 299 MT_QUIRK_STICKY_FINGERS | 300 MT_QUIRK_WIN8_PTP_BUTTONS, 301 .export_all_inputs = true }, 302 { .name = MT_CLS_EXPORT_ALL_INPUTS, 303 .quirks = MT_QUIRK_ALWAYS_VALID | 304 MT_QUIRK_CONTACT_CNT_ACCURATE, 305 .export_all_inputs = true }, 306 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 307 .quirks = MT_QUIRK_ALWAYS_VALID | 308 MT_QUIRK_IGNORE_DUPLICATES | 309 MT_QUIRK_HOVERING | 310 MT_QUIRK_CONTACT_CNT_ACCURATE | 311 MT_QUIRK_STICKY_FINGERS | 312 MT_QUIRK_WIN8_PTP_BUTTONS | 313 MT_QUIRK_FORCE_MULTI_INPUT, 314 .export_all_inputs = true }, 315 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 316 .quirks = MT_QUIRK_IGNORE_DUPLICATES | 317 MT_QUIRK_HOVERING | 318 MT_QUIRK_CONTACT_CNT_ACCURATE | 319 MT_QUIRK_STICKY_FINGERS | 320 MT_QUIRK_WIN8_PTP_BUTTONS | 321 MT_QUIRK_FORCE_MULTI_INPUT | 322 MT_QUIRK_NOT_SEEN_MEANS_UP, 323 .export_all_inputs = true }, 324 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP, 325 .quirks = MT_QUIRK_ALWAYS_VALID | 326 MT_QUIRK_IGNORE_DUPLICATES | 327 MT_QUIRK_HOVERING | 328 MT_QUIRK_CONTACT_CNT_ACCURATE | 329 MT_QUIRK_STICKY_FINGERS | 330 MT_QUIRK_WIN8_PTP_BUTTONS | 331 MT_QUIRK_DISABLE_WAKEUP, 332 .export_all_inputs = true }, 333 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS, 334 .quirks = MT_QUIRK_ALWAYS_VALID | 335 MT_QUIRK_IGNORE_DUPLICATES | 336 MT_QUIRK_HOVERING | 337 MT_QUIRK_CONTACT_CNT_ACCURATE | 338 MT_QUIRK_WIN8_PTP_BUTTONS, 339 .export_all_inputs = true }, 340 { .name = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 341 .quirks = MT_QUIRK_ALWAYS_VALID | 342 MT_QUIRK_IGNORE_DUPLICATES | 343 MT_QUIRK_HOVERING | 344 MT_QUIRK_CONTACT_CNT_ACCURATE | 345 MT_QUIRK_STICKY_FINGERS | 346 MT_QUIRK_WIN8_PTP_BUTTONS | 347 MT_QUIRK_KEEP_LATENCY_ON_CLOSE, 348 .export_all_inputs = true }, 349 350 /* 351 * vendor specific classes 352 */ 353 { .name = MT_CLS_3M, 354 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 355 MT_QUIRK_SLOT_IS_CONTACTID | 356 MT_QUIRK_TOUCH_SIZE_SCALING, 357 .sn_move = 2048, 358 .sn_width = 128, 359 .sn_height = 128, 360 .maxcontacts = 60, 361 }, 362 { .name = MT_CLS_EGALAX, 363 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 364 MT_QUIRK_VALID_IS_INRANGE, 365 .sn_move = 4096, 366 .sn_pressure = 32, 367 }, 368 { .name = MT_CLS_EGALAX_SERIAL, 369 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 370 MT_QUIRK_ALWAYS_VALID, 371 .sn_move = 4096, 372 .sn_pressure = 32, 373 }, 374 { .name = MT_CLS_TOPSEED, 375 .quirks = MT_QUIRK_ALWAYS_VALID, 376 .is_indirect = true, 377 .maxcontacts = 2, 378 }, 379 { .name = MT_CLS_PANASONIC, 380 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 381 .maxcontacts = 4 }, 382 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 383 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 384 MT_QUIRK_VALID_IS_INRANGE | 385 MT_QUIRK_SLOT_IS_CONTACTID, 386 .maxcontacts = 2 387 }, 388 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 389 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 390 MT_QUIRK_SLOT_IS_CONTACTID 391 }, 392 393 { .name = MT_CLS_FLATFROG, 394 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 395 MT_QUIRK_NO_AREA, 396 .sn_move = 2048, 397 .maxcontacts = 40, 398 }, 399 { .name = MT_CLS_LG, 400 .quirks = MT_QUIRK_ALWAYS_VALID | 401 MT_QUIRK_FIX_CONST_CONTACT_ID | 402 MT_QUIRK_IGNORE_DUPLICATES | 403 MT_QUIRK_HOVERING | 404 MT_QUIRK_CONTACT_CNT_ACCURATE }, 405 { .name = MT_CLS_ASUS, 406 .quirks = MT_QUIRK_ALWAYS_VALID | 407 MT_QUIRK_CONTACT_CNT_ACCURATE | 408 MT_QUIRK_ASUS_CUSTOM_UP }, 409 { .name = MT_CLS_VTL, 410 .quirks = MT_QUIRK_ALWAYS_VALID | 411 MT_QUIRK_CONTACT_CNT_ACCURATE | 412 MT_QUIRK_STICKY_FINGERS | 413 MT_QUIRK_FORCE_GET_FEATURE, 414 }, 415 { .name = MT_CLS_GOOGLE, 416 .quirks = MT_QUIRK_ALWAYS_VALID | 417 MT_QUIRK_CONTACT_CNT_ACCURATE | 418 MT_QUIRK_SLOT_IS_CONTACTID | 419 MT_QUIRK_HOVERING 420 }, 421 { .name = MT_CLS_RAZER_BLADE_STEALTH, 422 .quirks = MT_QUIRK_ALWAYS_VALID | 423 MT_QUIRK_IGNORE_DUPLICATES | 424 MT_QUIRK_HOVERING | 425 MT_QUIRK_CONTACT_CNT_ACCURATE | 426 MT_QUIRK_WIN8_PTP_BUTTONS, 427 }, 428 { .name = MT_CLS_SMART_TECH, 429 .quirks = MT_QUIRK_ALWAYS_VALID | 430 MT_QUIRK_IGNORE_DUPLICATES | 431 MT_QUIRK_CONTACT_CNT_ACCURATE | 432 MT_QUIRK_SEPARATE_APP_REPORT, 433 }, 434 { .name = MT_CLS_APPLE_TOUCHBAR, 435 .quirks = MT_QUIRK_HOVERING | 436 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE | 437 MT_QUIRK_APPLE_TOUCHBAR, 438 .maxcontacts = 11, 439 }, 440 { .name = MT_CLS_SIS, 441 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 442 MT_QUIRK_ALWAYS_VALID | 443 MT_QUIRK_CONTACT_CNT_ACCURATE, 444 }, 445 { .name = MT_CLS_YOGABOOK9I, 446 .quirks = MT_QUIRK_ALWAYS_VALID | 447 MT_QUIRK_FORCE_MULTI_INPUT | 448 MT_QUIRK_SEPARATE_APP_REPORT | 449 MT_QUIRK_HOVERING | 450 MT_QUIRK_YOGABOOK9I, 451 .export_all_inputs = true 452 }, 453 { .name = MT_CLS_EGALAX_P80H84, 454 .quirks = MT_QUIRK_ALWAYS_VALID | 455 MT_QUIRK_IGNORE_DUPLICATES | 456 MT_QUIRK_CONTACT_CNT_ACCURATE, 457 }, 458 { } 459 }; 460 461 static ssize_t mt_show_quirks(struct device *dev, 462 struct device_attribute *attr, 463 char *buf) 464 { 465 struct hid_device *hdev = to_hid_device(dev); 466 struct mt_device *td = hid_get_drvdata(hdev); 467 468 return sprintf(buf, "%u\n", td->mtclass.quirks); 469 } 470 471 static ssize_t mt_set_quirks(struct device *dev, 472 struct device_attribute *attr, 473 const char *buf, size_t count) 474 { 475 struct hid_device *hdev = to_hid_device(dev); 476 struct mt_device *td = hid_get_drvdata(hdev); 477 struct mt_application *application; 478 479 unsigned long val; 480 481 if (kstrtoul(buf, 0, &val)) 482 return -EINVAL; 483 484 td->mtclass.quirks = val; 485 486 list_for_each_entry(application, &td->applications, list) { 487 application->quirks = val; 488 if (!application->have_contact_count) 489 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 490 } 491 492 return count; 493 } 494 495 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 496 497 static struct attribute *sysfs_attrs[] = { 498 &dev_attr_quirks.attr, 499 NULL 500 }; 501 502 static const struct attribute_group mt_attribute_group = { 503 .attrs = sysfs_attrs 504 }; 505 506 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 507 { 508 int ret; 509 u32 size = hid_report_len(report); 510 u8 *buf; 511 512 /* 513 * Do not fetch the feature report if the device has been explicitly 514 * marked as non-capable. 515 */ 516 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) 517 return; 518 519 buf = hid_alloc_report_buf(report, GFP_KERNEL); 520 if (!buf) 521 return; 522 523 ret = hid_hw_raw_request(hdev, report->id, buf, size, 524 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 525 if (ret < 0) { 526 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 527 report->id); 528 } else { 529 /* The report ID in the request and the response should match */ 530 if (report->id != buf[0]) { 531 hid_err(hdev, "Returned feature report did not match the request\n"); 532 goto free; 533 } 534 535 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 536 size, 0); 537 if (ret) 538 dev_warn(&hdev->dev, "failed to report feature\n"); 539 } 540 541 free: 542 kfree(buf); 543 } 544 545 static void mt_feature_mapping(struct hid_device *hdev, 546 struct hid_field *field, struct hid_usage *usage) 547 { 548 struct mt_device *td = hid_get_drvdata(hdev); 549 550 switch (usage->hid) { 551 case HID_DG_CONTACTMAX: 552 mt_get_feature(hdev, field->report); 553 554 td->maxcontacts = field->value[0]; 555 if (!td->maxcontacts && 556 field->logical_maximum <= MT_MAX_MAXCONTACT) 557 td->maxcontacts = field->logical_maximum; 558 if (td->mtclass.maxcontacts) 559 /* check if the maxcontacts is given by the class */ 560 td->maxcontacts = td->mtclass.maxcontacts; 561 562 break; 563 case HID_DG_BUTTONTYPE: 564 if (usage->usage_index >= field->report_count) { 565 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 566 break; 567 } 568 569 mt_get_feature(hdev, field->report); 570 switch (field->value[usage->usage_index]) { 571 case MT_BUTTONTYPE_CLICKPAD: 572 td->is_buttonpad = true; 573 break; 574 case MT_BUTTONTYPE_PRESSUREPAD: 575 td->is_pressurepad = true; 576 break; 577 } 578 579 break; 580 case 0xff0000c5: 581 /* Retrieve the Win8 blob once to enable some devices */ 582 if (usage->usage_index == 0) 583 mt_get_feature(hdev, field->report); 584 break; 585 } 586 587 hid_haptic_feature_mapping(hdev, td->haptic, field, usage); 588 } 589 590 static void set_abs(struct input_dev *input, unsigned int code, 591 struct hid_field *field, int snratio) 592 { 593 int fmin = field->logical_minimum; 594 int fmax = field->logical_maximum; 595 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 596 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 597 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 598 } 599 600 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev, 601 struct mt_application *application) 602 { 603 struct mt_usages *usage; 604 605 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL); 606 if (!usage) 607 return NULL; 608 609 /* set some defaults so we do not need to check for null pointers */ 610 usage->x = DEFAULT_ZERO; 611 usage->y = DEFAULT_ZERO; 612 usage->cx = DEFAULT_ZERO; 613 usage->cy = DEFAULT_ZERO; 614 usage->p = DEFAULT_ZERO; 615 usage->w = DEFAULT_ZERO; 616 usage->h = DEFAULT_ZERO; 617 usage->a = DEFAULT_ZERO; 618 usage->contactid = DEFAULT_ZERO; 619 usage->tip_state = DEFAULT_FALSE; 620 usage->inrange_state = DEFAULT_FALSE; 621 usage->confidence_state = DEFAULT_TRUE; 622 623 list_add_tail(&usage->list, &application->mt_usages); 624 625 return usage; 626 } 627 628 static struct mt_application *mt_allocate_application(struct mt_device *td, 629 struct hid_report *report) 630 { 631 unsigned int application = report->application; 632 struct mt_application *mt_application; 633 634 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application), 635 GFP_KERNEL); 636 if (!mt_application) 637 return NULL; 638 639 mt_application->application = application; 640 INIT_LIST_HEAD(&mt_application->mt_usages); 641 642 if (application == HID_DG_TOUCHSCREEN) 643 mt_application->mt_flags |= INPUT_MT_DIRECT; 644 645 /* 646 * Model touchscreens providing buttons as touchpads. 647 */ 648 if (application == HID_DG_TOUCHPAD) { 649 mt_application->mt_flags |= INPUT_MT_POINTER; 650 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 651 } 652 653 mt_application->scantime = DEFAULT_ZERO; 654 mt_application->raw_cc = DEFAULT_ZERO; 655 mt_application->quirks = td->mtclass.quirks; 656 mt_application->report_id = report->id; 657 658 list_add_tail(&mt_application->list, &td->applications); 659 660 return mt_application; 661 } 662 663 static struct mt_application *mt_find_application(struct mt_device *td, 664 struct hid_report *report) 665 { 666 unsigned int application = report->application; 667 struct mt_application *tmp, *mt_application = NULL; 668 669 list_for_each_entry(tmp, &td->applications, list) { 670 if (application == tmp->application) { 671 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || 672 tmp->report_id == report->id) { 673 mt_application = tmp; 674 break; 675 } 676 } 677 } 678 679 if (!mt_application) 680 mt_application = mt_allocate_application(td, report); 681 682 return mt_application; 683 } 684 685 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, 686 struct hid_report *report) 687 { 688 struct mt_class *cls = &td->mtclass; 689 struct mt_report_data *rdata; 690 struct hid_field *field; 691 int r, n; 692 693 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL); 694 if (!rdata) 695 return NULL; 696 697 rdata->report = report; 698 rdata->application = mt_find_application(td, report); 699 700 if (!rdata->application) { 701 devm_kfree(&td->hdev->dev, rdata); 702 return NULL; 703 } 704 705 for (r = 0; r < report->maxfield; r++) { 706 field = report->field[r]; 707 708 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 709 continue; 710 711 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { 712 for (n = 0; n < field->report_count; n++) { 713 unsigned int hid = field->usage[n].hid; 714 715 if (hid == HID_DG_CONTACTID || 716 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && 717 hid == HID_DG_TRANSDUCER_INDEX)) { 718 rdata->is_mt_collection = true; 719 break; 720 } 721 } 722 } 723 } 724 725 list_add_tail(&rdata->list, &td->reports); 726 727 return rdata; 728 } 729 730 static struct mt_report_data *mt_find_report_data(struct mt_device *td, 731 struct hid_report *report) 732 { 733 struct mt_report_data *tmp, *rdata = NULL; 734 735 list_for_each_entry(tmp, &td->reports, list) { 736 if (report == tmp->report) { 737 rdata = tmp; 738 break; 739 } 740 } 741 742 if (!rdata) 743 rdata = mt_allocate_report_data(td, report); 744 745 return rdata; 746 } 747 748 static void mt_store_field(struct hid_device *hdev, 749 struct mt_application *application, 750 __s32 *value, 751 size_t offset) 752 { 753 struct mt_usages *usage; 754 __s32 **target; 755 756 if (list_empty(&application->mt_usages)) 757 usage = mt_allocate_usage(hdev, application); 758 else 759 usage = list_last_entry(&application->mt_usages, 760 struct mt_usages, 761 list); 762 763 if (!usage) 764 return; 765 766 target = (__s32 **)((char *)usage + offset); 767 768 /* the value has already been filled, create a new slot */ 769 if (*target != DEFAULT_TRUE && 770 *target != DEFAULT_FALSE && 771 *target != DEFAULT_ZERO) { 772 if (usage->contactid == DEFAULT_ZERO || 773 usage->x == DEFAULT_ZERO || 774 usage->y == DEFAULT_ZERO) { 775 hid_dbg(hdev, 776 "ignoring duplicate usage on incomplete"); 777 return; 778 } 779 usage = mt_allocate_usage(hdev, application); 780 if (!usage) 781 return; 782 783 target = (__s32 **)((char *)usage + offset); 784 } 785 786 *target = value; 787 } 788 789 #define MT_STORE_FIELD(__name) \ 790 mt_store_field(hdev, app, \ 791 &field->value[usage->usage_index], \ 792 offsetof(struct mt_usages, __name)) 793 794 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 795 struct hid_field *field, struct hid_usage *usage, 796 unsigned long **bit, int *max, struct mt_application *app) 797 { 798 struct mt_device *td = hid_get_drvdata(hdev); 799 struct mt_class *cls = &td->mtclass; 800 int code; 801 struct hid_usage *prev_usage = NULL; 802 803 /* 804 * Model touchscreens providing buttons as touchpads. 805 */ 806 if (field->application == HID_DG_TOUCHSCREEN && 807 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 808 app->mt_flags |= INPUT_MT_POINTER; 809 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 810 } 811 812 /* count the buttons on touchpads */ 813 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 814 app->buttons_count++; 815 816 if (usage->usage_index) 817 prev_usage = &field->usage[usage->usage_index - 1]; 818 819 switch (usage->hid & HID_USAGE_PAGE) { 820 821 case HID_UP_GENDESK: 822 switch (usage->hid) { 823 case HID_GD_X: 824 if (prev_usage && (prev_usage->hid == usage->hid)) { 825 code = ABS_MT_TOOL_X; 826 MT_STORE_FIELD(cx); 827 } else { 828 code = ABS_MT_POSITION_X; 829 MT_STORE_FIELD(x); 830 } 831 832 set_abs(hi->input, code, field, cls->sn_move); 833 834 /* 835 * A system multi-axis that exports X and Y has a high 836 * chance of being used directly on a surface 837 */ 838 if (field->application == HID_GD_SYSTEM_MULTIAXIS) { 839 __set_bit(INPUT_PROP_DIRECT, 840 hi->input->propbit); 841 input_set_abs_params(hi->input, 842 ABS_MT_TOOL_TYPE, 843 MT_TOOL_DIAL, 844 MT_TOOL_DIAL, 0, 0); 845 } 846 847 return 1; 848 case HID_GD_Y: 849 if (prev_usage && (prev_usage->hid == usage->hid)) { 850 code = ABS_MT_TOOL_Y; 851 MT_STORE_FIELD(cy); 852 } else { 853 code = ABS_MT_POSITION_Y; 854 MT_STORE_FIELD(y); 855 } 856 857 set_abs(hi->input, code, field, cls->sn_move); 858 859 return 1; 860 } 861 return 0; 862 863 case HID_UP_DIGITIZER: 864 switch (usage->hid) { 865 case HID_DG_INRANGE: 866 if (app->quirks & MT_QUIRK_HOVERING) { 867 input_set_abs_params(hi->input, 868 ABS_MT_DISTANCE, 0, 1, 0, 0); 869 } 870 MT_STORE_FIELD(inrange_state); 871 return 1; 872 case HID_DG_CONFIDENCE: 873 if ((cls->name == MT_CLS_WIN_8 || 874 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 875 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU || 876 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP || 877 cls->name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE) && 878 (field->application == HID_DG_TOUCHPAD || 879 field->application == HID_DG_TOUCHSCREEN)) 880 app->quirks |= MT_QUIRK_CONFIDENCE; 881 882 if (app->quirks & MT_QUIRK_CONFIDENCE) 883 input_set_abs_params(hi->input, 884 ABS_MT_TOOL_TYPE, 885 MT_TOOL_FINGER, 886 MT_TOOL_PALM, 0, 0); 887 888 MT_STORE_FIELD(confidence_state); 889 return 1; 890 case HID_DG_TOUCH: 891 /* 892 * Legacy devices use TIPSWITCH and not TOUCH. 893 * One special case here is of the Apple Touch Bars. 894 * In these devices, the tip state is contained in 895 * fields with the HID_DG_TOUCH usage. 896 * Let's just ignore this field for other devices. 897 */ 898 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 899 return -1; 900 fallthrough; 901 case HID_DG_TIPSWITCH: 902 if (field->application != HID_GD_SYSTEM_MULTIAXIS) 903 input_set_capability(hi->input, 904 EV_KEY, BTN_TOUCH); 905 MT_STORE_FIELD(tip_state); 906 return 1; 907 case HID_DG_TRANSDUCER_INDEX: 908 /* 909 * Contact ID in case of Apple Touch Bars is contained 910 * in fields with HID_DG_TRANSDUCER_INDEX usage. 911 */ 912 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)) 913 return 0; 914 fallthrough; 915 case HID_DG_CONTACTID: 916 MT_STORE_FIELD(contactid); 917 app->touches_by_report++; 918 return 1; 919 case HID_DG_WIDTH: 920 if (!(app->quirks & MT_QUIRK_NO_AREA)) 921 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 922 cls->sn_width); 923 MT_STORE_FIELD(w); 924 return 1; 925 case HID_DG_HEIGHT: 926 if (!(app->quirks & MT_QUIRK_NO_AREA)) { 927 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 928 cls->sn_height); 929 930 /* 931 * Only set ABS_MT_ORIENTATION if it is not 932 * already set by the HID_DG_AZIMUTH usage. 933 */ 934 if (!test_bit(ABS_MT_ORIENTATION, 935 hi->input->absbit)) 936 input_set_abs_params(hi->input, 937 ABS_MT_ORIENTATION, 0, 1, 0, 0); 938 } 939 MT_STORE_FIELD(h); 940 return 1; 941 case HID_DG_TIPPRESSURE: 942 set_abs(hi->input, ABS_MT_PRESSURE, field, 943 cls->sn_pressure); 944 td->is_haptic_touchpad = 945 hid_haptic_check_pressure_unit(td->haptic, 946 hi, field); 947 MT_STORE_FIELD(p); 948 return 1; 949 case HID_DG_SCANTIME: 950 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 951 app->scantime = &field->value[usage->usage_index]; 952 app->scantime_logical_max = field->logical_maximum; 953 return 1; 954 case HID_DG_CONTACTCOUNT: 955 app->have_contact_count = true; 956 app->raw_cc = &field->value[usage->usage_index]; 957 return 1; 958 case HID_DG_AZIMUTH: 959 /* 960 * Azimuth has the range of [0, MAX) representing a full 961 * revolution. Set ABS_MT_ORIENTATION to a quarter of 962 * MAX according the definition of ABS_MT_ORIENTATION 963 */ 964 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 965 -field->logical_maximum / 4, 966 field->logical_maximum / 4, 967 cls->sn_move ? 968 field->logical_maximum / cls->sn_move : 0, 0); 969 MT_STORE_FIELD(a); 970 return 1; 971 case HID_DG_CONTACTMAX: 972 /* contact max are global to the report */ 973 return -1; 974 } 975 /* let hid-input decide for the others */ 976 return 0; 977 978 case HID_UP_BUTTON: 979 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 980 /* 981 * MS PTP spec says that external buttons left and right have 982 * usages 2 and 3. 983 */ 984 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 985 field->application == HID_DG_TOUCHPAD && 986 (usage->hid & HID_USAGE) > 1) 987 code--; 988 989 if (field->application == HID_GD_SYSTEM_MULTIAXIS) 990 code = BTN_0 + ((usage->hid - 1) & HID_USAGE); 991 992 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 993 if (!*bit) 994 return -1; 995 input_set_capability(hi->input, EV_KEY, code); 996 return 1; 997 998 case 0xff000000: 999 /* we do not want to map these: no input-oriented meaning */ 1000 return -1; 1001 } 1002 1003 return 0; 1004 } 1005 1006 static int mt_compute_slot(struct mt_device *td, struct mt_application *app, 1007 struct mt_usages *slot, 1008 struct input_dev *input) 1009 { 1010 __s32 quirks = app->quirks; 1011 1012 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 1013 return *slot->contactid; 1014 1015 if (quirks & MT_QUIRK_CYPRESS) 1016 return cypress_compute_slot(app, slot); 1017 1018 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 1019 return app->num_received; 1020 1021 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 1022 return *slot->contactid - 1; 1023 1024 return input_mt_get_slot_by_key(input, *slot->contactid); 1025 } 1026 1027 static void mt_release_pending_palms(struct mt_device *td, 1028 struct mt_application *app, 1029 struct input_dev *input) 1030 { 1031 int slotnum; 1032 bool need_sync = false; 1033 1034 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) { 1035 clear_bit(slotnum, app->pending_palm_slots); 1036 clear_bit(slotnum, &td->mt_io_flags); 1037 1038 input_mt_slot(input, slotnum); 1039 input_mt_report_slot_inactive(input); 1040 1041 need_sync = true; 1042 } 1043 1044 if (need_sync) { 1045 input_mt_sync_frame(input); 1046 input_sync(input); 1047 } 1048 } 1049 1050 /* 1051 * this function is called when a whole packet has been received and processed, 1052 * so that it can decide what to send to the input layer. 1053 */ 1054 static void mt_sync_frame(struct mt_device *td, struct mt_application *app, 1055 struct input_dev *input) 1056 { 1057 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) 1058 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state); 1059 1060 input_mt_sync_frame(input); 1061 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp); 1062 input_sync(input); 1063 1064 mt_release_pending_palms(td, app, input); 1065 1066 app->num_received = 0; 1067 app->left_button_state = 0; 1068 if (td->is_haptic_touchpad) 1069 hid_haptic_pressure_reset(td->haptic); 1070 } 1071 1072 static int mt_compute_timestamp(struct mt_application *app, __s32 value) 1073 { 1074 long delta = value - app->prev_scantime; 1075 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies); 1076 1077 app->jiffies = jiffies; 1078 1079 if (delta < 0) 1080 delta += app->scantime_logical_max; 1081 1082 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 1083 delta *= 100; 1084 1085 if (jdelta > MAX_TIMESTAMP_INTERVAL) 1086 /* No data received for a while, resync the timestamp. */ 1087 return 0; 1088 else 1089 return app->timestamp + delta; 1090 } 1091 1092 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 1093 struct hid_usage *usage, __s32 value) 1094 { 1095 /* we will handle the hidinput part later, now remains hiddev */ 1096 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 1097 hid->hiddev_hid_event(hid, field, usage, value); 1098 1099 return 1; 1100 } 1101 1102 static int mt_process_slot(struct mt_device *td, struct input_dev *input, 1103 struct mt_application *app, 1104 struct mt_usages *slot) 1105 { 1106 struct input_mt *mt = input->mt; 1107 struct hid_device *hdev = td->hdev; 1108 __s32 quirks = app->quirks; 1109 bool valid = true; 1110 bool confidence_state = true; 1111 bool inrange_state = false; 1112 int active; 1113 int slotnum; 1114 int tool = MT_TOOL_FINGER; 1115 1116 if (!slot) 1117 return -EINVAL; 1118 1119 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 1120 app->num_received >= app->num_expected) 1121 return -EAGAIN; 1122 1123 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) { 1124 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 1125 valid = *slot->inrange_state; 1126 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1127 valid = *slot->tip_state; 1128 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 1129 valid = *slot->confidence_state; 1130 1131 if (!valid) 1132 return 0; 1133 } 1134 1135 slotnum = mt_compute_slot(td, app, slot, input); 1136 if (slotnum < 0 || slotnum >= td->maxcontacts) 1137 return 0; 1138 1139 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 1140 struct input_mt_slot *i_slot = &mt->slots[slotnum]; 1141 1142 if (input_mt_is_active(i_slot) && 1143 input_mt_is_used(mt, i_slot)) 1144 return -EAGAIN; 1145 } 1146 1147 if (quirks & MT_QUIRK_CONFIDENCE) 1148 confidence_state = *slot->confidence_state; 1149 1150 if (quirks & MT_QUIRK_HOVERING) 1151 inrange_state = *slot->inrange_state; 1152 1153 active = *slot->tip_state || inrange_state; 1154 1155 if (app->application == HID_GD_SYSTEM_MULTIAXIS) 1156 tool = MT_TOOL_DIAL; 1157 else if (unlikely(!confidence_state)) { 1158 tool = MT_TOOL_PALM; 1159 if (!active && mt && 1160 input_mt_is_active(&mt->slots[slotnum])) { 1161 /* 1162 * The non-confidence was reported for 1163 * previously valid contact that is also no 1164 * longer valid. We can't simply report 1165 * lift-off as userspace will not be aware 1166 * of non-confidence, so we need to split 1167 * it into 2 events: active MT_TOOL_PALM 1168 * and a separate liftoff. 1169 */ 1170 active = true; 1171 set_bit(slotnum, app->pending_palm_slots); 1172 } 1173 } 1174 1175 input_mt_slot(input, slotnum); 1176 input_mt_report_slot_state(input, tool, active); 1177 if (active) { 1178 /* this finger is in proximity of the sensor */ 1179 int wide = (*slot->w > *slot->h); 1180 int major = max(*slot->w, *slot->h); 1181 int minor = min(*slot->w, *slot->h); 1182 int orientation = wide; 1183 int max_azimuth; 1184 int azimuth; 1185 int x; 1186 int y; 1187 int cx; 1188 int cy; 1189 1190 if (slot->a != DEFAULT_ZERO) { 1191 /* 1192 * Azimuth is counter-clockwise and ranges from [0, MAX) 1193 * (a full revolution). Convert it to clockwise ranging 1194 * [-MAX/2, MAX/2]. 1195 * 1196 * Note that ABS_MT_ORIENTATION require us to report 1197 * the limit of [-MAX/4, MAX/4], but the value can go 1198 * out of range to [-MAX/2, MAX/2] to report an upside 1199 * down ellipsis. 1200 */ 1201 azimuth = *slot->a; 1202 max_azimuth = input_abs_get_max(input, 1203 ABS_MT_ORIENTATION); 1204 if (azimuth > max_azimuth * 2) 1205 azimuth -= max_azimuth * 4; 1206 orientation = -azimuth; 1207 if (quirks & MT_QUIRK_ORIENTATION_INVERT) 1208 orientation = -orientation; 1209 1210 } 1211 1212 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 1213 /* 1214 * divided by two to match visual scale of touch 1215 * for devices with this quirk 1216 */ 1217 major = major >> 1; 1218 minor = minor >> 1; 1219 } 1220 1221 if (td->is_haptic_touchpad) 1222 hid_haptic_pressure_increase(td->haptic, *slot->p); 1223 1224 x = hdev->quirks & HID_QUIRK_X_INVERT ? 1225 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x : 1226 *slot->x; 1227 y = hdev->quirks & HID_QUIRK_Y_INVERT ? 1228 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y : 1229 *slot->y; 1230 cx = hdev->quirks & HID_QUIRK_X_INVERT ? 1231 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx : 1232 *slot->cx; 1233 cy = hdev->quirks & HID_QUIRK_Y_INVERT ? 1234 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy : 1235 *slot->cy; 1236 1237 input_event(input, EV_ABS, ABS_MT_POSITION_X, x); 1238 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); 1239 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx); 1240 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy); 1241 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state); 1242 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation); 1243 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p); 1244 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 1245 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 1246 1247 set_bit(slotnum, &td->mt_io_flags); 1248 } else { 1249 clear_bit(slotnum, &td->mt_io_flags); 1250 } 1251 1252 return 0; 1253 } 1254 1255 static void mt_process_mt_event(struct hid_device *hid, 1256 struct mt_application *app, 1257 struct hid_field *field, 1258 struct hid_usage *usage, 1259 __s32 value, 1260 bool first_packet) 1261 { 1262 __s32 quirks = app->quirks; 1263 struct input_dev *input = field->hidinput->input; 1264 1265 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT)) 1266 return; 1267 1268 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) { 1269 1270 /* 1271 * For Win8 PTP touchpads we should only look at 1272 * non finger/touch events in the first_packet of a 1273 * (possible) multi-packet frame. 1274 */ 1275 if (!first_packet) 1276 return; 1277 1278 /* 1279 * For Win8 PTP touchpads we map both the clickpad click 1280 * and any "external" left buttons to BTN_LEFT if a 1281 * device claims to have both we need to report 1 for 1282 * BTN_LEFT if either is pressed, so we or all values 1283 * together and report the result in mt_sync_frame(). 1284 */ 1285 if (usage->type == EV_KEY && usage->code == BTN_LEFT) { 1286 app->left_button_state |= value; 1287 return; 1288 } 1289 } 1290 1291 input_event(input, usage->type, usage->code, value); 1292 } 1293 1294 static void mt_touch_report(struct hid_device *hid, 1295 struct mt_report_data *rdata) 1296 { 1297 struct mt_device *td = hid_get_drvdata(hid); 1298 struct hid_report *report = rdata->report; 1299 struct mt_application *app = rdata->application; 1300 struct hid_field *field; 1301 struct input_dev *input; 1302 struct mt_usages *slot; 1303 bool first_packet; 1304 unsigned count; 1305 int r, n; 1306 int scantime = 0; 1307 int contact_count = -1; 1308 1309 /* sticky fingers release in progress, abort */ 1310 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1311 return; 1312 1313 scantime = *app->scantime; 1314 app->timestamp = mt_compute_timestamp(app, scantime); 1315 if (app->raw_cc != DEFAULT_ZERO) 1316 contact_count = *app->raw_cc; 1317 1318 /* 1319 * Includes multi-packet support where subsequent 1320 * packets are sent with zero contactcount. 1321 */ 1322 if (contact_count >= 0) { 1323 /* 1324 * For Win8 PTPs the first packet (td->num_received == 0) may 1325 * have a contactcount of 0 if there only is a button event. 1326 * We double check that this is not a continuation packet 1327 * of a possible multi-packet frame be checking that the 1328 * timestamp has changed. 1329 */ 1330 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) && 1331 app->num_received == 0 && 1332 app->prev_scantime != scantime) 1333 app->num_expected = contact_count; 1334 /* A non 0 contact count always indicates a first packet */ 1335 else if (contact_count) 1336 app->num_expected = contact_count; 1337 } 1338 app->prev_scantime = scantime; 1339 1340 first_packet = app->num_received == 0; 1341 1342 input = report->field[0]->hidinput->input; 1343 1344 list_for_each_entry(slot, &app->mt_usages, list) { 1345 if (!mt_process_slot(td, input, app, slot)) 1346 app->num_received++; 1347 } 1348 1349 for (r = 0; r < report->maxfield; r++) { 1350 field = report->field[r]; 1351 count = field->report_count; 1352 1353 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 1354 continue; 1355 1356 for (n = 0; n < count; n++) 1357 mt_process_mt_event(hid, app, field, 1358 &field->usage[n], field->value[n], 1359 first_packet); 1360 } 1361 1362 if (app->num_received >= app->num_expected) 1363 mt_sync_frame(td, app, input); 1364 1365 /* 1366 * Windows 8 specs says 2 things: 1367 * - once a contact has been reported, it has to be reported in each 1368 * subsequent report 1369 * - the report rate when fingers are present has to be at least 1370 * the refresh rate of the screen, 60 or 120 Hz 1371 * 1372 * I interprete this that the specification forces a report rate of 1373 * at least 60 Hz for a touchscreen to be certified. 1374 * Which means that if we do not get a report whithin 16 ms, either 1375 * something wrong happens, either the touchscreen forgets to send 1376 * a release. Taking a reasonable margin allows to remove issues 1377 * with USB communication or the load of the machine. 1378 * 1379 * Given that Win 8 devices are forced to send a release, this will 1380 * only affect laggish machines and the ones that have a firmware 1381 * defect. 1382 */ 1383 if (app->quirks & MT_QUIRK_STICKY_FINGERS) { 1384 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1385 mod_timer(&td->release_timer, 1386 jiffies + msecs_to_jiffies(100)); 1387 else 1388 timer_delete(&td->release_timer); 1389 } 1390 1391 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1392 } 1393 1394 static int mt_touch_input_configured(struct hid_device *hdev, 1395 struct hid_input *hi, 1396 struct mt_application *app) 1397 { 1398 struct mt_device *td = hid_get_drvdata(hdev); 1399 struct mt_class *cls = &td->mtclass; 1400 struct input_dev *input = hi->input; 1401 int ret; 1402 1403 /* 1404 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars, 1405 * but the maximum contact count is greater than the default. 1406 */ 1407 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts) 1408 td->maxcontacts = cls->maxcontacts; 1409 1410 if (!td->maxcontacts) 1411 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1412 1413 mt_post_parse(td, app); 1414 if (td->serial_maybe) 1415 mt_post_parse_default_settings(td, app); 1416 1417 /* 1418 * The application for Apple Touch Bars is HID_DG_TOUCHPAD, 1419 * but these devices are direct. 1420 */ 1421 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR) 1422 app->mt_flags |= INPUT_MT_DIRECT; 1423 1424 if (cls->is_indirect) 1425 app->mt_flags |= INPUT_MT_POINTER; 1426 1427 if (td->is_haptic_touchpad) 1428 app->mt_flags |= INPUT_MT_TOTAL_FORCE; 1429 1430 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1431 app->mt_flags |= INPUT_MT_DROP_UNUSED; 1432 1433 /* check for clickpads */ 1434 if ((app->mt_flags & INPUT_MT_POINTER) && 1435 (app->buttons_count == 1)) 1436 td->is_buttonpad = true; 1437 1438 if (td->is_buttonpad) 1439 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1440 if (td->is_pressurepad) 1441 __set_bit(INPUT_PROP_PRESSUREPAD, input->propbit); 1442 1443 app->pending_palm_slots = devm_kcalloc(&hi->input->dev, 1444 BITS_TO_LONGS(td->maxcontacts), 1445 sizeof(long), 1446 GFP_KERNEL); 1447 if (!app->pending_palm_slots) 1448 return -ENOMEM; 1449 1450 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags); 1451 if (ret) 1452 return ret; 1453 1454 app->mt_flags = 0; 1455 return 0; 1456 } 1457 1458 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1459 max, EV_KEY, (c)) 1460 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1461 struct hid_field *field, struct hid_usage *usage, 1462 unsigned long **bit, int *max) 1463 { 1464 struct mt_device *td = hid_get_drvdata(hdev); 1465 struct mt_application *application; 1466 struct mt_report_data *rdata; 1467 int ret; 1468 1469 rdata = mt_find_report_data(td, field->report); 1470 if (!rdata) { 1471 hid_err(hdev, "failed to allocate data for report\n"); 1472 return 0; 1473 } 1474 1475 application = rdata->application; 1476 1477 /* 1478 * If mtclass.export_all_inputs is not set, only map fields from 1479 * TouchScreen or TouchPad collections. We need to ignore fields 1480 * that belong to other collections such as Mouse that might have 1481 * the same GenericDesktop usages. 1482 */ 1483 if (!td->mtclass.export_all_inputs && 1484 field->application != HID_DG_TOUCHSCREEN && 1485 field->application != HID_DG_PEN && 1486 field->application != HID_DG_TOUCHPAD && 1487 field->application != HID_GD_KEYBOARD && 1488 field->application != HID_GD_SYSTEM_CONTROL && 1489 field->application != HID_CP_CONSUMER_CONTROL && 1490 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1491 field->application != HID_GD_SYSTEM_MULTIAXIS && 1492 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1493 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1494 return -1; 1495 1496 /* 1497 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1498 * touchpad report descriptor. We need to treat these as an array to 1499 * map usages to input keys. 1500 */ 1501 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1502 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1503 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1504 set_bit(EV_REP, hi->input->evbit); 1505 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1506 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1507 switch (usage->hid & HID_USAGE) { 1508 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1509 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1510 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1511 case 0x6b: mt_map_key_clear(KEY_F21); break; 1512 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1513 default: 1514 return -1; 1515 } 1516 return 1; 1517 } 1518 1519 if (rdata->is_mt_collection) 1520 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, 1521 application); 1522 1523 /* 1524 * some egalax touchscreens have "application == DG_TOUCHSCREEN" 1525 * for the stylus. Overwrite the hid_input application 1526 */ 1527 if (field->physical == HID_DG_STYLUS) 1528 hi->application = HID_DG_STYLUS; 1529 1530 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit, 1531 max); 1532 if (ret != 0) 1533 return ret; 1534 1535 /* let hid-core decide for the others */ 1536 return 0; 1537 } 1538 1539 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1540 struct hid_field *field, struct hid_usage *usage, 1541 unsigned long **bit, int *max) 1542 { 1543 struct mt_device *td = hid_get_drvdata(hdev); 1544 struct mt_report_data *rdata; 1545 1546 rdata = mt_find_report_data(td, field->report); 1547 if (rdata && rdata->is_mt_collection) { 1548 /* We own these mappings, tell hid-input to ignore them */ 1549 return -1; 1550 } 1551 1552 /* let hid-core decide for the others */ 1553 return 0; 1554 } 1555 1556 static int mt_event(struct hid_device *hid, struct hid_field *field, 1557 struct hid_usage *usage, __s32 value) 1558 { 1559 struct mt_device *td = hid_get_drvdata(hid); 1560 struct mt_report_data *rdata; 1561 1562 rdata = mt_find_report_data(td, field->report); 1563 if (rdata && rdata->is_mt_collection) 1564 return mt_touch_event(hid, field, usage, value); 1565 1566 return 0; 1567 } 1568 1569 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, 1570 unsigned int *size) 1571 { 1572 if (hdev->vendor == I2C_VENDOR_ID_GOODIX && 1573 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || 1574 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { 1575 if (*size < 608) { 1576 dev_info( 1577 &hdev->dev, 1578 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n", 1579 *size); 1580 return rdesc; 1581 } 1582 1583 if (rdesc[607] == 0x15) { 1584 rdesc[607] = 0x25; 1585 dev_info( 1586 &hdev->dev, 1587 "GT7868Q report descriptor fixup is applied.\n"); 1588 } else { 1589 dev_info( 1590 &hdev->dev, 1591 "The byte is not expected for fixing the report descriptor. \ 1592 It's possible that the touchpad firmware is not suitable for applying the fix. \ 1593 got: %x\n", 1594 rdesc[607]); 1595 } 1596 } 1597 1598 return rdesc; 1599 } 1600 1601 static void mt_report(struct hid_device *hid, struct hid_report *report) 1602 { 1603 struct mt_device *td = hid_get_drvdata(hid); 1604 struct hid_field *field = report->field[0]; 1605 struct mt_report_data *rdata; 1606 1607 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1608 return; 1609 1610 rdata = mt_find_report_data(td, report); 1611 if (rdata && rdata->is_mt_collection) 1612 return mt_touch_report(hid, rdata); 1613 1614 /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */ 1615 if (rdata && rdata->application && 1616 (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) { 1617 1618 bool all_zero_report = true; 1619 1620 for (int f = 0; f < report->maxfield && all_zero_report; f++) { 1621 struct hid_field *fld = report->field[f]; 1622 1623 for (int i = 0; i < fld->report_count; i++) { 1624 unsigned int usage = fld->usage[i].hid; 1625 1626 if (usage == HID_DG_INRANGE || 1627 usage == HID_DG_TIPSWITCH || 1628 usage == HID_DG_BARRELSWITCH || 1629 usage == HID_DG_BARRELSWITCH2 || 1630 usage == HID_DG_CONTACTID || 1631 usage == HID_DG_TILT_X || 1632 usage == HID_DG_TILT_Y) { 1633 1634 if (fld->value[i] != 0) { 1635 all_zero_report = false; 1636 break; 1637 } 1638 } 1639 } 1640 } 1641 1642 if (all_zero_report) 1643 return; 1644 } 1645 1646 if (field && field->hidinput && field->hidinput->input) 1647 input_sync(field->hidinput->input); 1648 } 1649 1650 static bool mt_need_to_apply_feature(struct hid_device *hdev, 1651 struct hid_field *field, 1652 struct hid_usage *usage, 1653 enum latency_mode latency, 1654 enum report_mode report_mode, 1655 bool *inputmode_found) 1656 { 1657 struct mt_device *td = hid_get_drvdata(hdev); 1658 struct mt_class *cls = &td->mtclass; 1659 struct hid_report *report = field->report; 1660 unsigned int index = usage->usage_index; 1661 char *buf; 1662 u32 report_len; 1663 int max; 1664 1665 switch (usage->hid) { 1666 case HID_DG_INPUTMODE: 1667 /* 1668 * Some elan panels wrongly declare 2 input mode features, 1669 * and silently ignore when we set the value in the second 1670 * field. Skip the second feature and hope for the best. 1671 */ 1672 if (*inputmode_found) 1673 return false; 1674 1675 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1676 report_len = hid_report_len(report); 1677 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1678 if (!buf) { 1679 hid_err(hdev, 1680 "failed to allocate buffer for report\n"); 1681 return false; 1682 } 1683 hid_hw_raw_request(hdev, report->id, buf, report_len, 1684 HID_FEATURE_REPORT, 1685 HID_REQ_GET_REPORT); 1686 kfree(buf); 1687 } 1688 1689 field->value[index] = td->inputmode_value; 1690 *inputmode_found = true; 1691 return true; 1692 1693 case HID_DG_CONTACTMAX: 1694 if (cls->maxcontacts) { 1695 max = min_t(int, field->logical_maximum, 1696 cls->maxcontacts); 1697 if (field->value[index] != max) { 1698 field->value[index] = max; 1699 return true; 1700 } 1701 } 1702 break; 1703 1704 case HID_DG_LATENCYMODE: 1705 field->value[index] = latency; 1706 return true; 1707 1708 case HID_DG_SURFACESWITCH: 1709 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS); 1710 return true; 1711 1712 case HID_DG_BUTTONSWITCH: 1713 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS); 1714 return true; 1715 } 1716 1717 return false; /* no need to update the report */ 1718 } 1719 1720 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency, 1721 enum report_mode report_mode) 1722 { 1723 struct hid_report_enum *rep_enum; 1724 struct hid_report *rep; 1725 struct hid_usage *usage; 1726 int i, j; 1727 bool update_report; 1728 bool inputmode_found = false; 1729 1730 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; 1731 list_for_each_entry(rep, &rep_enum->report_list, list) { 1732 update_report = false; 1733 1734 for (i = 0; i < rep->maxfield; i++) { 1735 /* Ignore if report count is out of bounds. */ 1736 if (rep->field[i]->report_count < 1) 1737 continue; 1738 1739 for (j = 0; j < rep->field[i]->maxusage; j++) { 1740 usage = &rep->field[i]->usage[j]; 1741 1742 if (mt_need_to_apply_feature(hdev, 1743 rep->field[i], 1744 usage, 1745 latency, 1746 report_mode, 1747 &inputmode_found)) 1748 update_report = true; 1749 } 1750 } 1751 1752 if (update_report) 1753 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); 1754 } 1755 } 1756 1757 static void mt_post_parse_default_settings(struct mt_device *td, 1758 struct mt_application *app) 1759 { 1760 __s32 quirks = app->quirks; 1761 1762 /* unknown serial device needs special quirks */ 1763 if (list_is_singular(&app->mt_usages)) { 1764 quirks |= MT_QUIRK_ALWAYS_VALID; 1765 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1766 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1767 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1768 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1769 } 1770 1771 app->quirks = quirks; 1772 } 1773 1774 static void mt_post_parse(struct mt_device *td, struct mt_application *app) 1775 { 1776 if (!app->have_contact_count) 1777 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1778 } 1779 1780 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1781 { 1782 struct mt_device *td = hid_get_drvdata(hdev); 1783 const char *suffix = NULL; 1784 struct mt_report_data *rdata; 1785 struct mt_application *mt_application = NULL; 1786 struct hid_report *report; 1787 int ret; 1788 1789 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 || 1790 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT || 1791 td->mtclass.name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE)) { 1792 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0) 1793 td->is_haptic_touchpad = false; 1794 } else { 1795 td->is_haptic_touchpad = false; 1796 } 1797 1798 list_for_each_entry(report, &hi->reports, hidinput_list) { 1799 rdata = mt_find_report_data(td, report); 1800 if (!rdata) { 1801 hid_err(hdev, "failed to allocate data for report\n"); 1802 return -ENOMEM; 1803 } 1804 1805 mt_application = rdata->application; 1806 1807 if (rdata->is_mt_collection) { 1808 ret = mt_touch_input_configured(hdev, hi, 1809 mt_application); 1810 if (ret) 1811 return ret; 1812 } 1813 } 1814 1815 switch (hi->application) { 1816 case HID_GD_KEYBOARD: 1817 case HID_GD_KEYPAD: 1818 case HID_GD_MOUSE: 1819 case HID_DG_TOUCHPAD: 1820 case HID_GD_SYSTEM_CONTROL: 1821 case HID_CP_CONSUMER_CONTROL: 1822 case HID_GD_WIRELESS_RADIO_CTLS: 1823 case HID_GD_SYSTEM_MULTIAXIS: 1824 case HID_DG_PEN: 1825 /* already handled by hid core */ 1826 break; 1827 case HID_DG_TOUCHSCREEN: 1828 /* we do not set suffix = "Touchscreen" */ 1829 hi->input->name = hdev->name; 1830 break; 1831 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1832 suffix = "Custom Media Keys"; 1833 break; 1834 case HID_DG_STYLUS: 1835 /* force BTN_STYLUS to allow tablet matching in udev */ 1836 __set_bit(BTN_STYLUS, hi->input->keybit); 1837 break; 1838 default: 1839 suffix = "UNKNOWN"; 1840 break; 1841 } 1842 1843 /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */ 1844 if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) { 1845 switch (hi->report->id) { 1846 case 48: 1847 suffix = "Touchscreen Top"; 1848 break; 1849 case 56: 1850 suffix = "Touchscreen Bottom"; 1851 break; 1852 case 20: 1853 suffix = "Stylus Top"; 1854 break; 1855 case 40: 1856 suffix = "Stylus Bottom"; 1857 break; 1858 case 80: 1859 suffix = "Emulated Touchpad"; 1860 break; 1861 default: 1862 suffix = ""; 1863 break; 1864 } 1865 } 1866 1867 if (suffix) { 1868 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 1869 "%s %s", hdev->name, suffix); 1870 if (!hi->input->name) 1871 return -ENOMEM; 1872 } 1873 1874 return 0; 1875 } 1876 1877 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1878 { 1879 if (field->usage[0].hid != usage || 1880 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1881 return; 1882 1883 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1884 field->flags |= HID_MAIN_ITEM_VARIABLE; 1885 } 1886 1887 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1888 { 1889 struct hid_report *report; 1890 int i; 1891 1892 list_for_each_entry(report, 1893 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1894 list) { 1895 1896 if (!report->maxfield) 1897 continue; 1898 1899 for (i = 0; i < report->maxfield; i++) 1900 if (report->field[i]->maxusage >= 1) 1901 mt_fix_const_field(report->field[i], usage); 1902 } 1903 } 1904 1905 static void mt_release_contacts(struct hid_device *hid) 1906 { 1907 struct hid_input *hidinput; 1908 struct mt_application *application; 1909 struct mt_device *td = hid_get_drvdata(hid); 1910 1911 list_for_each_entry(hidinput, &hid->inputs, list) { 1912 struct input_dev *input_dev = hidinput->input; 1913 struct input_mt *mt = input_dev->mt; 1914 int i; 1915 1916 if (mt) { 1917 for (i = 0; i < mt->num_slots; i++) { 1918 input_mt_slot(input_dev, i); 1919 input_mt_report_slot_inactive(input_dev); 1920 clear_bit(i, &td->mt_io_flags); 1921 } 1922 input_mt_sync_frame(input_dev); 1923 input_sync(input_dev); 1924 } 1925 } 1926 1927 list_for_each_entry(application, &td->applications, list) { 1928 application->num_received = 0; 1929 } 1930 } 1931 1932 static void mt_expired_timeout(struct timer_list *t) 1933 { 1934 struct mt_device *td = timer_container_of(td, t, release_timer); 1935 struct hid_device *hdev = td->hdev; 1936 1937 /* 1938 * An input report came in just before we release the sticky fingers, 1939 * it will take care of the sticky fingers. 1940 */ 1941 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1942 return; 1943 if (td->mt_io_flags & MT_IO_SLOTS_MASK) 1944 mt_release_contacts(hdev); 1945 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1946 } 1947 1948 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1949 { 1950 int ret, i; 1951 struct mt_device *td; 1952 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1953 1954 for (i = 0; mt_classes[i].name ; i++) { 1955 if (id->driver_data == mt_classes[i].name) { 1956 mtclass = &(mt_classes[i]); 1957 break; 1958 } 1959 } 1960 1961 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1962 if (!td) { 1963 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1964 return -ENOMEM; 1965 } 1966 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL); 1967 if (!td->haptic) 1968 return -ENOMEM; 1969 1970 td->haptic->hdev = hdev; 1971 td->hdev = hdev; 1972 td->mtclass = *mtclass; 1973 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1974 hid_set_drvdata(hdev, td); 1975 1976 INIT_LIST_HEAD(&td->applications); 1977 INIT_LIST_HEAD(&td->reports); 1978 1979 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1980 td->serial_maybe = true; 1981 1982 1983 /* Orientation is inverted if the X or Y axes are 1984 * flipped, but normalized if both are inverted. 1985 */ 1986 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) && 1987 !((hdev->quirks & HID_QUIRK_X_INVERT) 1988 && (hdev->quirks & HID_QUIRK_Y_INVERT))) 1989 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT; 1990 1991 /* This allows the driver to correctly support devices 1992 * that emit events over several HID messages. 1993 */ 1994 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1995 1996 /* 1997 * This allows the driver to handle different input sensors 1998 * that emits events through different applications on the same HID 1999 * device. 2000 */ 2001 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 2002 2003 if (id->group != HID_GROUP_MULTITOUCH_WIN_8) 2004 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2005 2006 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { 2007 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; 2008 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 2009 } 2010 2011 timer_setup(&td->release_timer, mt_expired_timeout, 0); 2012 2013 ret = hid_parse(hdev); 2014 if (ret != 0) 2015 return ret; 2016 2017 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && 2018 !hid_find_field(hdev, HID_INPUT_REPORT, 2019 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) 2020 return -ENODEV; 2021 2022 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 2023 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 2024 2025 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH) 2026 hdev->quirks |= HID_QUIRK_NOGET; 2027 2028 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 2029 if (ret) 2030 return ret; 2031 2032 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 2033 if (ret) 2034 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 2035 hdev->name); 2036 2037 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2038 2039 if (td->is_haptic_touchpad) { 2040 if (hid_haptic_init(hdev, &td->haptic)) { 2041 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n", 2042 hdev->name); 2043 td->is_haptic_touchpad = false; 2044 devm_kfree(&hdev->dev, td->haptic); 2045 } 2046 } else { 2047 devm_kfree(&hdev->dev, td->haptic); 2048 } 2049 2050 return 0; 2051 } 2052 2053 static int mt_suspend(struct hid_device *hdev, pm_message_t state) 2054 { 2055 struct mt_device *td = hid_get_drvdata(hdev); 2056 2057 /* High latency is desirable for power savings during S3/S0ix */ 2058 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || 2059 !hid_hw_may_wakeup(hdev)) 2060 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2061 else 2062 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL); 2063 2064 return 0; 2065 } 2066 2067 static int mt_reset_resume(struct hid_device *hdev) 2068 { 2069 mt_release_contacts(hdev); 2070 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2071 return 0; 2072 } 2073 2074 static int mt_resume(struct hid_device *hdev) 2075 { 2076 /* Some Elan legacy devices require SET_IDLE to be set on resume. 2077 * It should be safe to send it to other devices too. 2078 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 2079 2080 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 2081 2082 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2083 2084 return 0; 2085 } 2086 2087 static void mt_remove(struct hid_device *hdev) 2088 { 2089 struct mt_device *td = hid_get_drvdata(hdev); 2090 2091 timer_delete_sync(&td->release_timer); 2092 2093 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 2094 hid_hw_stop(hdev); 2095 } 2096 2097 static void mt_on_hid_hw_open(struct hid_device *hdev) 2098 { 2099 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); 2100 } 2101 2102 static void mt_on_hid_hw_close(struct hid_device *hdev) 2103 { 2104 struct mt_device *td = hid_get_drvdata(hdev); 2105 2106 if (td->mtclass.quirks & MT_QUIRK_KEEP_LATENCY_ON_CLOSE) 2107 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE); 2108 else 2109 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); 2110 } 2111 2112 /* 2113 * This list contains only: 2114 * - VID/PID of products not working with the default multitouch handling 2115 * - 2 generic rules. 2116 * So there is no point in adding here any device with MT_CLS_DEFAULT. 2117 */ 2118 static const struct hid_device_id mt_devices[] = { 2119 2120 /* 3M panels */ 2121 { .driver_data = MT_CLS_3M, 2122 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2123 USB_DEVICE_ID_3M1968) }, 2124 { .driver_data = MT_CLS_3M, 2125 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2126 USB_DEVICE_ID_3M2256) }, 2127 { .driver_data = MT_CLS_3M, 2128 MT_USB_DEVICE(USB_VENDOR_ID_3M, 2129 USB_DEVICE_ID_3M3266) }, 2130 2131 /* Anton devices */ 2132 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2133 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 2134 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 2135 2136 /* Asus T101HA */ 2137 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, 2138 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2139 USB_VENDOR_ID_ASUSTEK, 2140 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, 2141 2142 /* Asus T304UA */ 2143 { .driver_data = MT_CLS_ASUS, 2144 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2145 USB_VENDOR_ID_ASUSTEK, 2146 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 2147 2148 /* Atmel panels */ 2149 { .driver_data = MT_CLS_SERIAL, 2150 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 2151 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 2152 2153 /* Baanto multitouch devices */ 2154 { .driver_data = MT_CLS_NSMU, 2155 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 2156 USB_DEVICE_ID_BAANTO_MT_190W2) }, 2157 2158 /* Cando panels */ 2159 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2160 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2161 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 2162 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 2163 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2164 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 2165 2166 /* Chunghwa Telecom touch panels */ 2167 { .driver_data = MT_CLS_NSMU, 2168 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 2169 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 2170 2171 /* CJTouch panels */ 2172 { .driver_data = MT_CLS_NSMU, 2173 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2174 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 2175 { .driver_data = MT_CLS_NSMU, 2176 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 2177 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 2178 2179 /* CVTouch panels */ 2180 { .driver_data = MT_CLS_NSMU, 2181 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 2182 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 2183 2184 /* eGalax devices (SAW) */ 2185 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 2186 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2187 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) }, 2188 2189 /* eGalax devices (resistive) */ 2190 { .driver_data = MT_CLS_EGALAX, 2191 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2192 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 2193 { .driver_data = MT_CLS_EGALAX, 2194 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2195 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 2196 2197 /* eGalax devices (capacitive) */ 2198 { .driver_data = MT_CLS_EGALAX_SERIAL, 2199 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2200 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 2201 { .driver_data = MT_CLS_EGALAX, 2202 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2203 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 2204 { .driver_data = MT_CLS_EGALAX_SERIAL, 2205 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2206 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 2207 { .driver_data = MT_CLS_EGALAX_SERIAL, 2208 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2209 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 2210 { .driver_data = MT_CLS_EGALAX_SERIAL, 2211 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2212 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 2213 { .driver_data = MT_CLS_EGALAX_SERIAL, 2214 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2215 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 2216 { .driver_data = MT_CLS_EGALAX, 2217 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2218 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 2219 { .driver_data = MT_CLS_EGALAX, 2220 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2221 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 2222 { .driver_data = MT_CLS_EGALAX_SERIAL, 2223 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2224 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 2225 { .driver_data = MT_CLS_EGALAX, 2226 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2227 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 2228 { .driver_data = MT_CLS_EGALAX, 2229 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 2230 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 2231 { .driver_data = MT_CLS_EGALAX, 2232 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2233 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 2234 { .driver_data = MT_CLS_EGALAX, 2235 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2236 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 2237 { .driver_data = MT_CLS_EGALAX_SERIAL, 2238 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2239 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 2240 { .driver_data = MT_CLS_EGALAX_SERIAL, 2241 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2242 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 2243 { .driver_data = MT_CLS_EGALAX_SERIAL, 2244 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2245 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 2246 { .driver_data = MT_CLS_EGALAX_SERIAL, 2247 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 2248 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C000) }, 2249 { .driver_data = MT_CLS_EGALAX_P80H84, 2250 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2251 USB_VENDOR_ID_DWAV, 2252 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, 2253 2254 /* Elan devices */ 2255 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2256 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2257 USB_VENDOR_ID_ELAN, 0x313a) }, 2258 2259 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2260 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2261 USB_VENDOR_ID_ELAN, 0x3148) }, 2262 2263 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2264 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2265 USB_VENDOR_ID_ELAN, 0x32ae) }, 2266 2267 /* Elitegroup panel */ 2268 { .driver_data = MT_CLS_SERIAL, 2269 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 2270 USB_DEVICE_ID_ELITEGROUP_05D8) }, 2271 2272 /* Flatfrog Panels */ 2273 { .driver_data = MT_CLS_FLATFROG, 2274 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 2275 USB_DEVICE_ID_MULTITOUCH_3200) }, 2276 2277 /* FocalTech Panels */ 2278 { .driver_data = MT_CLS_SERIAL, 2279 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 2280 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 2281 2282 /* GeneralTouch panel */ 2283 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2284 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2285 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 2286 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2287 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2288 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 2289 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 2290 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2291 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 2292 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2293 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2294 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 2295 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2296 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2297 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 2298 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2299 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2300 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 2301 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 2302 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 2303 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 2304 2305 /* Gametel game controller */ 2306 { .driver_data = MT_CLS_NSMU, 2307 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 2308 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 2309 2310 /* Goodix GT7868Q devices */ 2311 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2312 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2313 I2C_DEVICE_ID_GOODIX_01E8) }, 2314 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2315 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, 2316 I2C_DEVICE_ID_GOODIX_01E9) }, 2317 2318 /* GoodTouch panels */ 2319 { .driver_data = MT_CLS_NSMU, 2320 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 2321 USB_DEVICE_ID_GOODTOUCH_000f) }, 2322 2323 /* Hanvon panels */ 2324 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2325 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 2326 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 2327 2328 /* HONOR GLO-GXXX panel */ 2329 { .driver_data = MT_CLS_VTL, 2330 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2331 0x347d, 0x7853) }, 2332 2333 /* HONOR MagicBook Art 14 touchpad */ 2334 { .driver_data = MT_CLS_VTL, 2335 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2336 0x35cc, 0x0104) }, 2337 2338 /* Ilitek dual touch panel */ 2339 { .driver_data = MT_CLS_NSMU, 2340 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 2341 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 2342 2343 /* LG Melfas panel */ 2344 { .driver_data = MT_CLS_LG, 2345 HID_USB_DEVICE(USB_VENDOR_ID_LG, 2346 USB_DEVICE_ID_LG_MELFAS_MT) }, 2347 { .driver_data = MT_CLS_LG, 2348 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, 2349 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, 2350 2351 /* Lenovo X1 TAB Gen 1 */ 2352 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2353 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2354 USB_VENDOR_ID_LENOVO, 2355 USB_DEVICE_ID_LENOVO_X1_TAB) }, 2356 2357 /* Lenovo X1 TAB Gen 2 */ 2358 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2359 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2360 USB_VENDOR_ID_LENOVO, 2361 USB_DEVICE_ID_LENOVO_X1_TAB2) }, 2362 2363 /* Lenovo X1 TAB Gen 3 */ 2364 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2365 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2366 USB_VENDOR_ID_LENOVO, 2367 USB_DEVICE_ID_LENOVO_X1_TAB3) }, 2368 2369 /* Lenovo X12 TAB Gen 1 */ 2370 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2371 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2372 USB_VENDOR_ID_LENOVO, 2373 USB_DEVICE_ID_LENOVO_X12_TAB) }, 2374 2375 /* Lenovo X12 TAB Gen 2 */ 2376 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2377 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2378 USB_VENDOR_ID_LENOVO, 2379 USB_DEVICE_ID_LENOVO_X12_TAB2) }, 2380 2381 /* Lenovo Yoga Book 9i */ 2382 { .driver_data = MT_CLS_YOGABOOK9I, 2383 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2384 USB_VENDOR_ID_LENOVO, 2385 USB_DEVICE_ID_LENOVO_YOGABOOK9I) }, 2386 2387 /* Logitech devices */ 2388 { .driver_data = MT_CLS_NSMU, 2389 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, 2390 USB_VENDOR_ID_LOGITECH, 2391 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, 2392 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, 2393 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 2394 USB_VENDOR_ID_LOGITECH, 2395 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) }, 2396 2397 /* MosArt panels */ 2398 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2399 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2400 USB_DEVICE_ID_ASUS_T91MT)}, 2401 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2402 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 2403 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 2404 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 2405 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 2406 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 2407 2408 /* Novatek Panel */ 2409 { .driver_data = MT_CLS_NSMU, 2410 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 2411 USB_DEVICE_ID_NOVATEK_PCT) }, 2412 2413 /* Ntrig Panel */ 2414 { .driver_data = MT_CLS_NSMU, 2415 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2416 USB_VENDOR_ID_NTRIG, 0x1b05) }, 2417 2418 /* Panasonic panels */ 2419 { .driver_data = MT_CLS_PANASONIC, 2420 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2421 USB_DEVICE_ID_PANABOARD_UBT780) }, 2422 { .driver_data = MT_CLS_PANASONIC, 2423 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 2424 USB_DEVICE_ID_PANABOARD_UBT880) }, 2425 2426 /* PixArt optical touch screen */ 2427 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2428 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2429 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 2430 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2431 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2432 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 2433 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 2434 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 2435 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 2436 2437 /* PixCir-based panels */ 2438 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 2439 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 2440 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 2441 2442 /* Quanta-based panels */ 2443 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 2444 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 2445 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 2446 2447 /* Razer touchpads */ 2448 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH, 2449 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2450 USB_VENDOR_ID_SYNAPTICS, 0x8323) }, 2451 2452 /* Smart Tech panels */ 2453 { .driver_data = MT_CLS_SMART_TECH, 2454 MT_USB_DEVICE(0x0b8c, 0x0092)}, 2455 2456 /* Stantum panels */ 2457 { .driver_data = MT_CLS_CONFIDENCE, 2458 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 2459 USB_DEVICE_ID_MTP_STM)}, 2460 2461 /* Synaptics devices */ 2462 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2463 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2464 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) }, 2465 2466 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2467 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2468 USB_VENDOR_ID_SYNAPTICS, 0xcddc) }, 2469 2470 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2471 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2472 USB_VENDOR_ID_SYNAPTICS, 0xce08) }, 2473 2474 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, 2475 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2476 USB_VENDOR_ID_SYNAPTICS, 0xce09) }, 2477 2478 /* TopSeed panels */ 2479 { .driver_data = MT_CLS_TOPSEED, 2480 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 2481 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 2482 2483 /* Touch International panels */ 2484 { .driver_data = MT_CLS_NSMU, 2485 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 2486 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 2487 2488 /* Unitec panels */ 2489 { .driver_data = MT_CLS_NSMU, 2490 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2491 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 2492 { .driver_data = MT_CLS_NSMU, 2493 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 2494 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 2495 2496 /* Uniwill touchpads */ 2497 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2498 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2499 USB_VENDOR_ID_PIXART, 0x0255) }, 2500 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE, 2501 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2502 USB_VENDOR_ID_PIXART, 0x0274) }, 2503 2504 /* VTL panels */ 2505 { .driver_data = MT_CLS_VTL, 2506 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 2507 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 2508 2509 /* Winbond Electronics Corp. */ 2510 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS, 2511 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2512 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) }, 2513 2514 /* Wistron panels */ 2515 { .driver_data = MT_CLS_NSMU, 2516 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 2517 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 2518 2519 /* XAT */ 2520 { .driver_data = MT_CLS_NSMU, 2521 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 2522 USB_DEVICE_ID_XAT_CSR) }, 2523 2524 /* Xiroku */ 2525 { .driver_data = MT_CLS_NSMU, 2526 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2527 USB_DEVICE_ID_XIROKU_SPX) }, 2528 { .driver_data = MT_CLS_NSMU, 2529 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2530 USB_DEVICE_ID_XIROKU_MPX) }, 2531 { .driver_data = MT_CLS_NSMU, 2532 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2533 USB_DEVICE_ID_XIROKU_CSR) }, 2534 { .driver_data = MT_CLS_NSMU, 2535 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2536 USB_DEVICE_ID_XIROKU_SPX1) }, 2537 { .driver_data = MT_CLS_NSMU, 2538 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2539 USB_DEVICE_ID_XIROKU_MPX1) }, 2540 { .driver_data = MT_CLS_NSMU, 2541 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2542 USB_DEVICE_ID_XIROKU_CSR1) }, 2543 { .driver_data = MT_CLS_NSMU, 2544 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2545 USB_DEVICE_ID_XIROKU_SPX2) }, 2546 { .driver_data = MT_CLS_NSMU, 2547 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2548 USB_DEVICE_ID_XIROKU_MPX2) }, 2549 { .driver_data = MT_CLS_NSMU, 2550 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 2551 USB_DEVICE_ID_XIROKU_CSR2) }, 2552 2553 /* Apple Touch Bar */ 2554 { .driver_data = MT_CLS_APPLE_TOUCHBAR, 2555 HID_USB_DEVICE(USB_VENDOR_ID_APPLE, 2556 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, 2557 2558 /* Google MT devices */ 2559 { .driver_data = MT_CLS_GOOGLE, 2560 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 2561 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 2562 { .driver_data = MT_CLS_GOOGLE, 2563 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE, 2564 USB_DEVICE_ID_GOOGLE_WHISKERS) }, 2565 2566 /* sis */ 2567 { .driver_data = MT_CLS_SIS, 2568 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH, 2569 HID_ANY_ID) }, 2570 2571 /* Hantick */ 2572 { .driver_data = MT_CLS_NSMU, 2573 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 2574 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) }, 2575 2576 /* Generic MT device */ 2577 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 2578 2579 /* Generic Win 8 certified MT device */ 2580 { .driver_data = MT_CLS_WIN_8, 2581 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 2582 HID_ANY_ID, HID_ANY_ID) }, 2583 { } 2584 }; 2585 MODULE_DEVICE_TABLE(hid, mt_devices); 2586 2587 static const struct hid_usage_id mt_grabbed_usages[] = { 2588 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 2589 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 2590 }; 2591 2592 static struct hid_driver mt_driver = { 2593 .name = "hid-multitouch", 2594 .id_table = mt_devices, 2595 .probe = mt_probe, 2596 .remove = mt_remove, 2597 .input_mapping = mt_input_mapping, 2598 .input_mapped = mt_input_mapped, 2599 .input_configured = mt_input_configured, 2600 .feature_mapping = mt_feature_mapping, 2601 .usage_table = mt_grabbed_usages, 2602 .event = mt_event, 2603 .report_fixup = mt_report_fixup, 2604 .report = mt_report, 2605 .suspend = pm_ptr(mt_suspend), 2606 .reset_resume = pm_ptr(mt_reset_resume), 2607 .resume = pm_ptr(mt_resume), 2608 .on_hid_hw_open = mt_on_hid_hw_open, 2609 .on_hid_hw_close = mt_on_hid_hw_close, 2610 }; 2611 module_hid_driver(mt_driver); 2612