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