1 /* 2 * HID driver for multitouch panels 3 * 4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com> 6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 7 * Copyright (c) 2012-2013 Red Hat, Inc 8 * 9 * This code is partly based on hid-egalax.c: 10 * 11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 13 * Copyright (c) 2010 Canonical, Ltd. 14 * 15 * This code is partly based on hid-3m-pct.c: 16 * 17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 19 * Copyright (c) 2010 Canonical, Ltd. 20 * 21 */ 22 23 /* 24 * This program is free software; you can redistribute it and/or modify it 25 * under the terms of the GNU General Public License as published by the Free 26 * Software Foundation; either version 2 of the License, or (at your option) 27 * any later version. 28 */ 29 30 /* 31 * This driver is regularly tested thanks to the tool hid-test[1]. 32 * This tool relies on hid-replay[2] and a database of hid devices[3]. 33 * Please run these regression tests before patching this module so that 34 * your patch won't break existing known devices. 35 * 36 * [1] https://github.com/bentiss/hid-test 37 * [2] https://github.com/bentiss/hid-replay 38 * [3] https://github.com/bentiss/hid-devices 39 */ 40 41 #include <linux/device.h> 42 #include <linux/hid.h> 43 #include <linux/module.h> 44 #include <linux/slab.h> 45 #include <linux/input/mt.h> 46 #include <linux/string.h> 47 48 49 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 50 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 51 MODULE_DESCRIPTION("HID multitouch panels"); 52 MODULE_LICENSE("GPL"); 53 54 #include "hid-ids.h" 55 56 /* quirks to control the device */ 57 #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0) 58 #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1) 59 #define MT_QUIRK_CYPRESS (1 << 2) 60 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3) 61 #define MT_QUIRK_ALWAYS_VALID (1 << 4) 62 #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) 63 #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) 64 #define MT_QUIRK_CONFIDENCE (1 << 7) 65 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) 66 #define MT_QUIRK_NO_AREA (1 << 9) 67 #define MT_QUIRK_IGNORE_DUPLICATES (1 << 10) 68 #define MT_QUIRK_HOVERING (1 << 11) 69 #define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12) 70 #define MT_QUIRK_FORCE_GET_FEATURE (1 << 13) 71 72 #define MT_INPUTMODE_TOUCHSCREEN 0x02 73 #define MT_INPUTMODE_TOUCHPAD 0x03 74 75 #define MT_BUTTONTYPE_CLICKPAD 0 76 77 struct mt_slot { 78 __s32 x, y, cx, cy, p, w, h; 79 __s32 contactid; /* the device ContactID assigned to this slot */ 80 bool touch_state; /* is the touch valid? */ 81 bool inrange_state; /* is the finger in proximity of the sensor? */ 82 bool confidence_state; /* is the touch made by a finger? */ 83 }; 84 85 struct mt_class { 86 __s32 name; /* MT_CLS */ 87 __s32 quirks; 88 __s32 sn_move; /* Signal/noise ratio for move events */ 89 __s32 sn_width; /* Signal/noise ratio for width events */ 90 __s32 sn_height; /* Signal/noise ratio for height events */ 91 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 92 __u8 maxcontacts; 93 bool is_indirect; /* true for touchpads */ 94 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 95 }; 96 97 struct mt_fields { 98 unsigned usages[HID_MAX_FIELDS]; 99 unsigned int length; 100 }; 101 102 struct mt_device { 103 struct mt_slot curdata; /* placeholder of incoming data */ 104 struct mt_class mtclass; /* our mt device class */ 105 struct mt_fields *fields; /* temporary placeholder for storing the 106 multitouch fields */ 107 int cc_index; /* contact count field index in the report */ 108 int cc_value_index; /* contact count value index in the field */ 109 unsigned last_slot_field; /* the last field of a slot */ 110 unsigned mt_report_id; /* the report ID of the multitouch device */ 111 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 112 __s16 inputmode_index; /* InputMode HID feature index in the report */ 113 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 114 -1 if non-existent */ 115 __u8 inputmode_value; /* InputMode HID feature value */ 116 __u8 num_received; /* how many contacts we received */ 117 __u8 num_expected; /* expected last contact index */ 118 __u8 maxcontacts; 119 __u8 touches_by_report; /* how many touches are present in one report: 120 * 1 means we should use a serial protocol 121 * > 1 means hybrid (multitouch) protocol */ 122 __u8 buttons_count; /* number of physical buttons per touchpad */ 123 bool is_buttonpad; /* is this device a button pad? */ 124 bool serial_maybe; /* need to check for serial protocol */ 125 bool curvalid; /* is the current contact valid? */ 126 unsigned mt_flags; /* flags to pass to input-mt */ 127 }; 128 129 static void mt_post_parse_default_settings(struct mt_device *td); 130 static void mt_post_parse(struct mt_device *td); 131 132 /* classes of device behavior */ 133 #define MT_CLS_DEFAULT 0x0001 134 135 #define MT_CLS_SERIAL 0x0002 136 #define MT_CLS_CONFIDENCE 0x0003 137 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 138 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 139 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 140 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 141 /* reserved 0x0008 */ 142 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 143 #define MT_CLS_NSMU 0x000a 144 /* reserved 0x0010 */ 145 /* reserved 0x0011 */ 146 #define MT_CLS_WIN_8 0x0012 147 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 148 149 /* vendor specific classes */ 150 #define MT_CLS_3M 0x0101 151 /* reserved 0x0102 */ 152 #define MT_CLS_EGALAX 0x0103 153 #define MT_CLS_EGALAX_SERIAL 0x0104 154 #define MT_CLS_TOPSEED 0x0105 155 #define MT_CLS_PANASONIC 0x0106 156 #define MT_CLS_FLATFROG 0x0107 157 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 158 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 159 #define MT_CLS_VTL 0x0110 160 161 #define MT_DEFAULT_MAXCONTACT 10 162 #define MT_MAX_MAXCONTACT 250 163 164 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 165 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 166 167 /* 168 * these device-dependent functions determine what slot corresponds 169 * to a valid contact that was just read. 170 */ 171 172 static int cypress_compute_slot(struct mt_device *td) 173 { 174 if (td->curdata.contactid != 0 || td->num_received == 0) 175 return td->curdata.contactid; 176 else 177 return -1; 178 } 179 180 static struct mt_class mt_classes[] = { 181 { .name = MT_CLS_DEFAULT, 182 .quirks = MT_QUIRK_ALWAYS_VALID | 183 MT_QUIRK_CONTACT_CNT_ACCURATE }, 184 { .name = MT_CLS_NSMU, 185 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 186 { .name = MT_CLS_SERIAL, 187 .quirks = MT_QUIRK_ALWAYS_VALID}, 188 { .name = MT_CLS_CONFIDENCE, 189 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 190 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 191 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 192 MT_QUIRK_SLOT_IS_CONTACTID }, 193 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 194 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 195 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 196 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 197 .quirks = MT_QUIRK_VALID_IS_INRANGE | 198 MT_QUIRK_SLOT_IS_CONTACTID, 199 .maxcontacts = 2 }, 200 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 201 .quirks = MT_QUIRK_VALID_IS_INRANGE | 202 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 203 .maxcontacts = 2 }, 204 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 205 .quirks = MT_QUIRK_VALID_IS_INRANGE | 206 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 207 { .name = MT_CLS_WIN_8, 208 .quirks = MT_QUIRK_ALWAYS_VALID | 209 MT_QUIRK_IGNORE_DUPLICATES | 210 MT_QUIRK_HOVERING | 211 MT_QUIRK_CONTACT_CNT_ACCURATE }, 212 { .name = MT_CLS_EXPORT_ALL_INPUTS, 213 .quirks = MT_QUIRK_ALWAYS_VALID | 214 MT_QUIRK_CONTACT_CNT_ACCURATE, 215 .export_all_inputs = true }, 216 217 /* 218 * vendor specific classes 219 */ 220 { .name = MT_CLS_3M, 221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 222 MT_QUIRK_SLOT_IS_CONTACTID, 223 .sn_move = 2048, 224 .sn_width = 128, 225 .sn_height = 128, 226 .maxcontacts = 60, 227 }, 228 { .name = MT_CLS_EGALAX, 229 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 230 MT_QUIRK_VALID_IS_INRANGE, 231 .sn_move = 4096, 232 .sn_pressure = 32, 233 }, 234 { .name = MT_CLS_EGALAX_SERIAL, 235 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 236 MT_QUIRK_ALWAYS_VALID, 237 .sn_move = 4096, 238 .sn_pressure = 32, 239 }, 240 { .name = MT_CLS_TOPSEED, 241 .quirks = MT_QUIRK_ALWAYS_VALID, 242 .is_indirect = true, 243 .maxcontacts = 2, 244 }, 245 { .name = MT_CLS_PANASONIC, 246 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 247 .maxcontacts = 4 }, 248 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 249 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 250 MT_QUIRK_VALID_IS_INRANGE | 251 MT_QUIRK_SLOT_IS_CONTACTID, 252 .maxcontacts = 2 253 }, 254 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 255 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 256 MT_QUIRK_SLOT_IS_CONTACTID 257 }, 258 259 { .name = MT_CLS_FLATFROG, 260 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 261 MT_QUIRK_NO_AREA, 262 .sn_move = 2048, 263 .maxcontacts = 40, 264 }, 265 { .name = MT_CLS_VTL, 266 .quirks = MT_QUIRK_ALWAYS_VALID | 267 MT_QUIRK_CONTACT_CNT_ACCURATE | 268 MT_QUIRK_FORCE_GET_FEATURE, 269 }, 270 { } 271 }; 272 273 static ssize_t mt_show_quirks(struct device *dev, 274 struct device_attribute *attr, 275 char *buf) 276 { 277 struct hid_device *hdev = to_hid_device(dev); 278 struct mt_device *td = hid_get_drvdata(hdev); 279 280 return sprintf(buf, "%u\n", td->mtclass.quirks); 281 } 282 283 static ssize_t mt_set_quirks(struct device *dev, 284 struct device_attribute *attr, 285 const char *buf, size_t count) 286 { 287 struct hid_device *hdev = to_hid_device(dev); 288 struct mt_device *td = hid_get_drvdata(hdev); 289 290 unsigned long val; 291 292 if (kstrtoul(buf, 0, &val)) 293 return -EINVAL; 294 295 td->mtclass.quirks = val; 296 297 if (td->cc_index < 0) 298 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 299 300 return count; 301 } 302 303 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 304 305 static struct attribute *sysfs_attrs[] = { 306 &dev_attr_quirks.attr, 307 NULL 308 }; 309 310 static struct attribute_group mt_attribute_group = { 311 .attrs = sysfs_attrs 312 }; 313 314 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 315 { 316 struct mt_device *td = hid_get_drvdata(hdev); 317 int ret, size = hid_report_len(report); 318 u8 *buf; 319 320 /* 321 * Only fetch the feature report if initial reports are not already 322 * been retrieved. Currently this is only done for Windows 8 touch 323 * devices. 324 */ 325 if (!(hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)) 326 return; 327 if (td->mtclass.name != MT_CLS_WIN_8) 328 return; 329 330 buf = hid_alloc_report_buf(report, GFP_KERNEL); 331 if (!buf) 332 return; 333 334 ret = hid_hw_raw_request(hdev, report->id, buf, size, 335 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 336 if (ret < 0) { 337 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 338 report->id); 339 } else { 340 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 341 size, 0); 342 if (ret) 343 dev_warn(&hdev->dev, "failed to report feature\n"); 344 } 345 346 kfree(buf); 347 } 348 349 static void mt_feature_mapping(struct hid_device *hdev, 350 struct hid_field *field, struct hid_usage *usage) 351 { 352 struct mt_device *td = hid_get_drvdata(hdev); 353 354 switch (usage->hid) { 355 case HID_DG_INPUTMODE: 356 /* Ignore if value index is out of bounds. */ 357 if (usage->usage_index >= field->report_count) { 358 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); 359 break; 360 } 361 362 if (td->inputmode < 0) { 363 td->inputmode = field->report->id; 364 td->inputmode_index = usage->usage_index; 365 } else { 366 /* 367 * Some elan panels wrongly declare 2 input mode 368 * features, and silently ignore when we set the 369 * value in the second field. Skip the second feature 370 * and hope for the best. 371 */ 372 dev_info(&hdev->dev, 373 "Ignoring the extra HID_DG_INPUTMODE\n"); 374 } 375 376 break; 377 case HID_DG_CONTACTMAX: 378 mt_get_feature(hdev, field->report); 379 380 td->maxcontact_report_id = field->report->id; 381 td->maxcontacts = field->value[0]; 382 if (!td->maxcontacts && 383 field->logical_maximum <= MT_MAX_MAXCONTACT) 384 td->maxcontacts = field->logical_maximum; 385 if (td->mtclass.maxcontacts) 386 /* check if the maxcontacts is given by the class */ 387 td->maxcontacts = td->mtclass.maxcontacts; 388 389 break; 390 case HID_DG_BUTTONTYPE: 391 if (usage->usage_index >= field->report_count) { 392 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 393 break; 394 } 395 396 mt_get_feature(hdev, field->report); 397 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 398 td->is_buttonpad = true; 399 400 break; 401 case 0xff0000c5: 402 /* Retrieve the Win8 blob once to enable some devices */ 403 if (usage->usage_index == 0) 404 mt_get_feature(hdev, field->report); 405 break; 406 } 407 } 408 409 static void set_abs(struct input_dev *input, unsigned int code, 410 struct hid_field *field, int snratio) 411 { 412 int fmin = field->logical_minimum; 413 int fmax = field->logical_maximum; 414 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 415 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 416 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 417 } 418 419 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 420 struct hid_input *hi) 421 { 422 struct mt_fields *f = td->fields; 423 424 if (f->length >= HID_MAX_FIELDS) 425 return; 426 427 f->usages[f->length++] = usage->hid; 428 } 429 430 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 431 struct hid_field *field, struct hid_usage *usage, 432 unsigned long **bit, int *max) 433 { 434 struct mt_device *td = hid_get_drvdata(hdev); 435 struct mt_class *cls = &td->mtclass; 436 int code; 437 struct hid_usage *prev_usage = NULL; 438 439 if (field->application == HID_DG_TOUCHSCREEN) 440 td->mt_flags |= INPUT_MT_DIRECT; 441 442 /* 443 * Model touchscreens providing buttons as touchpads. 444 */ 445 if (field->application == HID_DG_TOUCHPAD || 446 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 447 td->mt_flags |= INPUT_MT_POINTER; 448 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 449 } 450 451 /* count the buttons on touchpads */ 452 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 453 td->buttons_count++; 454 455 if (usage->usage_index) 456 prev_usage = &field->usage[usage->usage_index - 1]; 457 458 switch (usage->hid & HID_USAGE_PAGE) { 459 460 case HID_UP_GENDESK: 461 switch (usage->hid) { 462 case HID_GD_X: 463 if (prev_usage && (prev_usage->hid == usage->hid)) { 464 hid_map_usage(hi, usage, bit, max, 465 EV_ABS, ABS_MT_TOOL_X); 466 set_abs(hi->input, ABS_MT_TOOL_X, field, 467 cls->sn_move); 468 } else { 469 hid_map_usage(hi, usage, bit, max, 470 EV_ABS, ABS_MT_POSITION_X); 471 set_abs(hi->input, ABS_MT_POSITION_X, field, 472 cls->sn_move); 473 } 474 475 mt_store_field(usage, td, hi); 476 return 1; 477 case HID_GD_Y: 478 if (prev_usage && (prev_usage->hid == usage->hid)) { 479 hid_map_usage(hi, usage, bit, max, 480 EV_ABS, ABS_MT_TOOL_Y); 481 set_abs(hi->input, ABS_MT_TOOL_Y, field, 482 cls->sn_move); 483 } else { 484 hid_map_usage(hi, usage, bit, max, 485 EV_ABS, ABS_MT_POSITION_Y); 486 set_abs(hi->input, ABS_MT_POSITION_Y, field, 487 cls->sn_move); 488 } 489 490 mt_store_field(usage, td, hi); 491 return 1; 492 } 493 return 0; 494 495 case HID_UP_DIGITIZER: 496 switch (usage->hid) { 497 case HID_DG_INRANGE: 498 if (cls->quirks & MT_QUIRK_HOVERING) { 499 hid_map_usage(hi, usage, bit, max, 500 EV_ABS, ABS_MT_DISTANCE); 501 input_set_abs_params(hi->input, 502 ABS_MT_DISTANCE, 0, 1, 0, 0); 503 } 504 mt_store_field(usage, td, hi); 505 return 1; 506 case HID_DG_CONFIDENCE: 507 if (cls->name == MT_CLS_WIN_8 && 508 field->application == HID_DG_TOUCHPAD) 509 cls->quirks |= MT_QUIRK_CONFIDENCE; 510 mt_store_field(usage, td, hi); 511 return 1; 512 case HID_DG_TIPSWITCH: 513 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 514 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 515 mt_store_field(usage, td, hi); 516 return 1; 517 case HID_DG_CONTACTID: 518 mt_store_field(usage, td, hi); 519 td->touches_by_report++; 520 td->mt_report_id = field->report->id; 521 return 1; 522 case HID_DG_WIDTH: 523 hid_map_usage(hi, usage, bit, max, 524 EV_ABS, ABS_MT_TOUCH_MAJOR); 525 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 526 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 527 cls->sn_width); 528 mt_store_field(usage, td, hi); 529 return 1; 530 case HID_DG_HEIGHT: 531 hid_map_usage(hi, usage, bit, max, 532 EV_ABS, ABS_MT_TOUCH_MINOR); 533 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 534 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 535 cls->sn_height); 536 input_set_abs_params(hi->input, 537 ABS_MT_ORIENTATION, 0, 1, 0, 0); 538 } 539 mt_store_field(usage, td, hi); 540 return 1; 541 case HID_DG_TIPPRESSURE: 542 hid_map_usage(hi, usage, bit, max, 543 EV_ABS, ABS_MT_PRESSURE); 544 set_abs(hi->input, ABS_MT_PRESSURE, field, 545 cls->sn_pressure); 546 mt_store_field(usage, td, hi); 547 return 1; 548 case HID_DG_CONTACTCOUNT: 549 /* Ignore if indexes are out of bounds. */ 550 if (field->index >= field->report->maxfield || 551 usage->usage_index >= field->report_count) 552 return 1; 553 td->cc_index = field->index; 554 td->cc_value_index = usage->usage_index; 555 return 1; 556 case HID_DG_CONTACTMAX: 557 /* we don't set td->last_slot_field as contactcount and 558 * contact max are global to the report */ 559 return -1; 560 case HID_DG_TOUCH: 561 /* Legacy devices use TIPSWITCH and not TOUCH. 562 * Let's just ignore this field. */ 563 return -1; 564 } 565 /* let hid-input decide for the others */ 566 return 0; 567 568 case HID_UP_BUTTON: 569 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 570 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 571 input_set_capability(hi->input, EV_KEY, code); 572 return 1; 573 574 case 0xff000000: 575 /* we do not want to map these: no input-oriented meaning */ 576 return -1; 577 } 578 579 return 0; 580 } 581 582 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi, 583 struct hid_field *field, struct hid_usage *usage, 584 unsigned long **bit, int *max) 585 { 586 if (usage->type == EV_KEY || usage->type == EV_ABS) 587 set_bit(usage->type, hi->input->evbit); 588 589 return -1; 590 } 591 592 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 593 { 594 __s32 quirks = td->mtclass.quirks; 595 596 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 597 return td->curdata.contactid; 598 599 if (quirks & MT_QUIRK_CYPRESS) 600 return cypress_compute_slot(td); 601 602 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 603 return td->num_received; 604 605 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 606 return td->curdata.contactid - 1; 607 608 return input_mt_get_slot_by_key(input, td->curdata.contactid); 609 } 610 611 /* 612 * this function is called when a whole contact has been processed, 613 * so that it can assign it to a slot and store the data there 614 */ 615 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 616 { 617 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 618 td->num_received >= td->num_expected) 619 return; 620 621 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 622 int active; 623 int slotnum = mt_compute_slot(td, input); 624 struct mt_slot *s = &td->curdata; 625 struct input_mt *mt = input->mt; 626 627 if (slotnum < 0 || slotnum >= td->maxcontacts) 628 return; 629 630 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 631 struct input_mt_slot *slot = &mt->slots[slotnum]; 632 if (input_mt_is_active(slot) && 633 input_mt_is_used(mt, slot)) 634 return; 635 } 636 637 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 638 s->confidence_state = 1; 639 active = (s->touch_state || s->inrange_state) && 640 s->confidence_state; 641 642 input_mt_slot(input, slotnum); 643 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 644 if (active) { 645 /* this finger is in proximity of the sensor */ 646 int wide = (s->w > s->h); 647 /* divided by two to match visual scale of touch */ 648 int major = max(s->w, s->h) >> 1; 649 int minor = min(s->w, s->h) >> 1; 650 651 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 652 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 653 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 654 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 655 input_event(input, EV_ABS, ABS_MT_DISTANCE, 656 !s->touch_state); 657 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 658 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 659 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 660 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 661 } 662 } 663 664 td->num_received++; 665 } 666 667 /* 668 * this function is called when a whole packet has been received and processed, 669 * so that it can decide what to send to the input layer. 670 */ 671 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 672 { 673 input_mt_sync_frame(input); 674 input_sync(input); 675 td->num_received = 0; 676 } 677 678 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 679 struct hid_usage *usage, __s32 value) 680 { 681 /* we will handle the hidinput part later, now remains hiddev */ 682 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 683 hid->hiddev_hid_event(hid, field, usage, value); 684 685 return 1; 686 } 687 688 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 689 struct hid_usage *usage, __s32 value) 690 { 691 struct mt_device *td = hid_get_drvdata(hid); 692 __s32 quirks = td->mtclass.quirks; 693 struct input_dev *input = field->hidinput->input; 694 695 if (hid->claimed & HID_CLAIMED_INPUT) { 696 switch (usage->hid) { 697 case HID_DG_INRANGE: 698 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 699 td->curvalid = value; 700 if (quirks & MT_QUIRK_HOVERING) 701 td->curdata.inrange_state = value; 702 break; 703 case HID_DG_TIPSWITCH: 704 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 705 td->curvalid = value; 706 td->curdata.touch_state = value; 707 break; 708 case HID_DG_CONFIDENCE: 709 if (quirks & MT_QUIRK_CONFIDENCE) 710 td->curdata.confidence_state = value; 711 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 712 td->curvalid = value; 713 break; 714 case HID_DG_CONTACTID: 715 td->curdata.contactid = value; 716 break; 717 case HID_DG_TIPPRESSURE: 718 td->curdata.p = value; 719 break; 720 case HID_GD_X: 721 if (usage->code == ABS_MT_TOOL_X) 722 td->curdata.cx = value; 723 else 724 td->curdata.x = value; 725 break; 726 case HID_GD_Y: 727 if (usage->code == ABS_MT_TOOL_Y) 728 td->curdata.cy = value; 729 else 730 td->curdata.y = value; 731 break; 732 case HID_DG_WIDTH: 733 td->curdata.w = value; 734 break; 735 case HID_DG_HEIGHT: 736 td->curdata.h = value; 737 break; 738 case HID_DG_CONTACTCOUNT: 739 break; 740 case HID_DG_TOUCH: 741 /* do nothing */ 742 break; 743 744 default: 745 if (usage->type) 746 input_event(input, usage->type, usage->code, 747 value); 748 return; 749 } 750 751 if (usage->usage_index + 1 == field->report_count) { 752 /* we only take into account the last report. */ 753 if (usage->hid == td->last_slot_field) 754 mt_complete_slot(td, field->hidinput->input); 755 } 756 757 } 758 } 759 760 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 761 { 762 struct mt_device *td = hid_get_drvdata(hid); 763 struct hid_field *field; 764 unsigned count; 765 int r, n; 766 767 /* 768 * Includes multi-packet support where subsequent 769 * packets are sent with zero contactcount. 770 */ 771 if (td->cc_index >= 0) { 772 struct hid_field *field = report->field[td->cc_index]; 773 int value = field->value[td->cc_value_index]; 774 if (value) 775 td->num_expected = value; 776 } 777 778 for (r = 0; r < report->maxfield; r++) { 779 field = report->field[r]; 780 count = field->report_count; 781 782 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 783 continue; 784 785 for (n = 0; n < count; n++) 786 mt_process_mt_event(hid, field, &field->usage[n], 787 field->value[n]); 788 } 789 790 if (td->num_received >= td->num_expected) 791 mt_sync_frame(td, report->field[0]->hidinput->input); 792 } 793 794 static int mt_touch_input_configured(struct hid_device *hdev, 795 struct hid_input *hi) 796 { 797 struct mt_device *td = hid_get_drvdata(hdev); 798 struct mt_class *cls = &td->mtclass; 799 struct input_dev *input = hi->input; 800 int ret; 801 802 if (!td->maxcontacts) 803 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 804 805 mt_post_parse(td); 806 if (td->serial_maybe) 807 mt_post_parse_default_settings(td); 808 809 if (cls->is_indirect) 810 td->mt_flags |= INPUT_MT_POINTER; 811 812 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 813 td->mt_flags |= INPUT_MT_DROP_UNUSED; 814 815 /* check for clickpads */ 816 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 817 td->is_buttonpad = true; 818 819 if (td->is_buttonpad) 820 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 821 822 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 823 if (ret) 824 return ret; 825 826 td->mt_flags = 0; 827 return 0; 828 } 829 830 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 831 struct hid_field *field, struct hid_usage *usage, 832 unsigned long **bit, int *max) 833 { 834 struct mt_device *td = hid_get_drvdata(hdev); 835 836 /* 837 * If mtclass.export_all_inputs is not set, only map fields from 838 * TouchScreen or TouchPad collections. We need to ignore fields 839 * that belong to other collections such as Mouse that might have 840 * the same GenericDesktop usages. 841 */ 842 if (!td->mtclass.export_all_inputs && 843 field->application != HID_DG_TOUCHSCREEN && 844 field->application != HID_DG_PEN && 845 field->application != HID_DG_TOUCHPAD) 846 return -1; 847 848 /* 849 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 850 * for the stylus. 851 * The check for mt_report_id ensures we don't process 852 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 853 * collection, but within the report ID. 854 */ 855 if (field->physical == HID_DG_STYLUS) 856 return 0; 857 else if ((field->physical == 0) && 858 (field->report->id != td->mt_report_id) && 859 (td->mt_report_id != -1)) 860 return 0; 861 862 if (field->application == HID_DG_TOUCHSCREEN || 863 field->application == HID_DG_TOUCHPAD) 864 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 865 866 /* let hid-core decide for the others */ 867 return 0; 868 } 869 870 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 871 struct hid_field *field, struct hid_usage *usage, 872 unsigned long **bit, int *max) 873 { 874 /* 875 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 876 * for the stylus. 877 */ 878 if (field->physical == HID_DG_STYLUS) 879 return 0; 880 881 if (field->application == HID_DG_TOUCHSCREEN || 882 field->application == HID_DG_TOUCHPAD) 883 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max); 884 885 /* let hid-core decide for the others */ 886 return 0; 887 } 888 889 static int mt_event(struct hid_device *hid, struct hid_field *field, 890 struct hid_usage *usage, __s32 value) 891 { 892 struct mt_device *td = hid_get_drvdata(hid); 893 894 if (field->report->id == td->mt_report_id) 895 return mt_touch_event(hid, field, usage, value); 896 897 return 0; 898 } 899 900 static void mt_report(struct hid_device *hid, struct hid_report *report) 901 { 902 struct mt_device *td = hid_get_drvdata(hid); 903 struct hid_field *field = report->field[0]; 904 905 if (!(hid->claimed & HID_CLAIMED_INPUT)) 906 return; 907 908 if (report->id == td->mt_report_id) 909 return mt_touch_report(hid, report); 910 911 if (field && field->hidinput && field->hidinput->input) 912 input_sync(field->hidinput->input); 913 } 914 915 static void mt_set_input_mode(struct hid_device *hdev) 916 { 917 struct mt_device *td = hid_get_drvdata(hdev); 918 struct hid_report *r; 919 struct hid_report_enum *re; 920 struct mt_class *cls = &td->mtclass; 921 char *buf; 922 int report_len; 923 924 if (td->inputmode < 0) 925 return; 926 927 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 928 r = re->report_id_hash[td->inputmode]; 929 if (r) { 930 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 931 report_len = hid_report_len(r); 932 buf = hid_alloc_report_buf(r, GFP_KERNEL); 933 if (!buf) { 934 hid_err(hdev, "failed to allocate buffer for report\n"); 935 return; 936 } 937 hid_hw_raw_request(hdev, r->id, buf, report_len, 938 HID_FEATURE_REPORT, 939 HID_REQ_GET_REPORT); 940 kfree(buf); 941 } 942 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 943 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 944 } 945 } 946 947 static void mt_set_maxcontacts(struct hid_device *hdev) 948 { 949 struct mt_device *td = hid_get_drvdata(hdev); 950 struct hid_report *r; 951 struct hid_report_enum *re; 952 int fieldmax, max; 953 954 if (td->maxcontact_report_id < 0) 955 return; 956 957 if (!td->mtclass.maxcontacts) 958 return; 959 960 re = &hdev->report_enum[HID_FEATURE_REPORT]; 961 r = re->report_id_hash[td->maxcontact_report_id]; 962 if (r) { 963 max = td->mtclass.maxcontacts; 964 fieldmax = r->field[0]->logical_maximum; 965 max = min(fieldmax, max); 966 if (r->field[0]->value[0] != max) { 967 r->field[0]->value[0] = max; 968 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 969 } 970 } 971 } 972 973 static void mt_post_parse_default_settings(struct mt_device *td) 974 { 975 __s32 quirks = td->mtclass.quirks; 976 977 /* unknown serial device needs special quirks */ 978 if (td->touches_by_report == 1) { 979 quirks |= MT_QUIRK_ALWAYS_VALID; 980 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 981 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 982 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 983 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 984 } 985 986 td->mtclass.quirks = quirks; 987 } 988 989 static void mt_post_parse(struct mt_device *td) 990 { 991 struct mt_fields *f = td->fields; 992 struct mt_class *cls = &td->mtclass; 993 994 if (td->touches_by_report > 0) { 995 int field_count_per_touch = f->length / td->touches_by_report; 996 td->last_slot_field = f->usages[field_count_per_touch - 1]; 997 } 998 999 if (td->cc_index < 0) 1000 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1001 } 1002 1003 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1004 { 1005 struct mt_device *td = hid_get_drvdata(hdev); 1006 char *name; 1007 const char *suffix = NULL; 1008 struct hid_field *field = hi->report->field[0]; 1009 int ret; 1010 1011 if (hi->report->id == td->mt_report_id) { 1012 ret = mt_touch_input_configured(hdev, hi); 1013 if (ret) 1014 return ret; 1015 } 1016 1017 /* 1018 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1019 * for the stylus. Check this first, and then rely on the application 1020 * field. 1021 */ 1022 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1023 suffix = "Pen"; 1024 /* force BTN_STYLUS to allow tablet matching in udev */ 1025 __set_bit(BTN_STYLUS, hi->input->keybit); 1026 } else { 1027 switch (field->application) { 1028 case HID_GD_KEYBOARD: 1029 suffix = "Keyboard"; 1030 break; 1031 case HID_GD_KEYPAD: 1032 suffix = "Keypad"; 1033 break; 1034 case HID_GD_MOUSE: 1035 suffix = "Mouse"; 1036 break; 1037 case HID_DG_STYLUS: 1038 suffix = "Pen"; 1039 /* force BTN_STYLUS to allow tablet matching in udev */ 1040 __set_bit(BTN_STYLUS, hi->input->keybit); 1041 break; 1042 case HID_DG_TOUCHSCREEN: 1043 /* we do not set suffix = "Touchscreen" */ 1044 break; 1045 case HID_DG_TOUCHPAD: 1046 suffix = "Touchpad"; 1047 break; 1048 case HID_GD_SYSTEM_CONTROL: 1049 suffix = "System Control"; 1050 break; 1051 case HID_CP_CONSUMER_CONTROL: 1052 suffix = "Consumer Control"; 1053 break; 1054 default: 1055 suffix = "UNKNOWN"; 1056 break; 1057 } 1058 } 1059 1060 if (suffix) { 1061 name = devm_kzalloc(&hi->input->dev, 1062 strlen(hdev->name) + strlen(suffix) + 2, 1063 GFP_KERNEL); 1064 if (name) { 1065 sprintf(name, "%s %s", hdev->name, suffix); 1066 hi->input->name = name; 1067 } 1068 } 1069 1070 return 0; 1071 } 1072 1073 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1074 { 1075 int ret, i; 1076 struct mt_device *td; 1077 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1078 1079 for (i = 0; mt_classes[i].name ; i++) { 1080 if (id->driver_data == mt_classes[i].name) { 1081 mtclass = &(mt_classes[i]); 1082 break; 1083 } 1084 } 1085 1086 /* This allows the driver to correctly support devices 1087 * that emit events over several HID messages. 1088 */ 1089 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1090 1091 /* 1092 * This allows the driver to handle different input sensors 1093 * that emits events through different reports on the same HID 1094 * device. 1095 */ 1096 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1097 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1098 1099 /* 1100 * Handle special quirks for Windows 8 certified devices. 1101 */ 1102 if (id->group == HID_GROUP_MULTITOUCH_WIN_8) 1103 /* 1104 * Some multitouch screens do not like to be polled for input 1105 * reports. Fortunately, the Win8 spec says that all touches 1106 * should be sent during each report, making the initialization 1107 * of input reports unnecessary. 1108 * 1109 * In addition some touchpads do not behave well if we read 1110 * all feature reports from them. Instead we prevent 1111 * initial report fetching and then selectively fetch each 1112 * report we are interested in. 1113 */ 1114 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1115 1116 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1117 if (!td) { 1118 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1119 return -ENOMEM; 1120 } 1121 td->mtclass = *mtclass; 1122 td->inputmode = -1; 1123 td->maxcontact_report_id = -1; 1124 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1125 td->cc_index = -1; 1126 td->mt_report_id = -1; 1127 hid_set_drvdata(hdev, td); 1128 1129 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1130 GFP_KERNEL); 1131 if (!td->fields) { 1132 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1133 return -ENOMEM; 1134 } 1135 1136 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1137 td->serial_maybe = true; 1138 1139 ret = hid_parse(hdev); 1140 if (ret != 0) 1141 return ret; 1142 1143 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1144 if (ret) 1145 return ret; 1146 1147 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1148 if (ret) 1149 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1150 hdev->name); 1151 1152 mt_set_maxcontacts(hdev); 1153 mt_set_input_mode(hdev); 1154 1155 /* release .fields memory as it is not used anymore */ 1156 devm_kfree(&hdev->dev, td->fields); 1157 td->fields = NULL; 1158 1159 return 0; 1160 } 1161 1162 #ifdef CONFIG_PM 1163 static void mt_release_contacts(struct hid_device *hid) 1164 { 1165 struct hid_input *hidinput; 1166 1167 list_for_each_entry(hidinput, &hid->inputs, list) { 1168 struct input_dev *input_dev = hidinput->input; 1169 struct input_mt *mt = input_dev->mt; 1170 int i; 1171 1172 if (mt) { 1173 for (i = 0; i < mt->num_slots; i++) { 1174 input_mt_slot(input_dev, i); 1175 input_mt_report_slot_state(input_dev, 1176 MT_TOOL_FINGER, 1177 false); 1178 } 1179 input_mt_sync_frame(input_dev); 1180 input_sync(input_dev); 1181 } 1182 } 1183 } 1184 1185 static int mt_reset_resume(struct hid_device *hdev) 1186 { 1187 mt_release_contacts(hdev); 1188 mt_set_maxcontacts(hdev); 1189 mt_set_input_mode(hdev); 1190 return 0; 1191 } 1192 1193 static int mt_resume(struct hid_device *hdev) 1194 { 1195 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1196 * It should be safe to send it to other devices too. 1197 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1198 1199 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1200 1201 return 0; 1202 } 1203 #endif 1204 1205 static void mt_remove(struct hid_device *hdev) 1206 { 1207 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1208 hid_hw_stop(hdev); 1209 } 1210 1211 /* 1212 * This list contains only: 1213 * - VID/PID of products not working with the default multitouch handling 1214 * - 2 generic rules. 1215 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1216 */ 1217 static const struct hid_device_id mt_devices[] = { 1218 1219 /* 3M panels */ 1220 { .driver_data = MT_CLS_3M, 1221 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1222 USB_DEVICE_ID_3M1968) }, 1223 { .driver_data = MT_CLS_3M, 1224 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1225 USB_DEVICE_ID_3M2256) }, 1226 { .driver_data = MT_CLS_3M, 1227 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1228 USB_DEVICE_ID_3M3266) }, 1229 1230 /* Anton devices */ 1231 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1232 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1233 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1234 1235 /* Atmel panels */ 1236 { .driver_data = MT_CLS_SERIAL, 1237 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1238 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1239 1240 /* Baanto multitouch devices */ 1241 { .driver_data = MT_CLS_NSMU, 1242 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1243 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1244 1245 /* Cando panels */ 1246 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1247 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1248 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1249 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1250 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1251 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1252 1253 /* Chunghwa Telecom touch panels */ 1254 { .driver_data = MT_CLS_NSMU, 1255 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1256 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1257 1258 /* CJTouch panels */ 1259 { .driver_data = MT_CLS_NSMU, 1260 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1261 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1262 { .driver_data = MT_CLS_NSMU, 1263 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1264 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1265 1266 /* CVTouch panels */ 1267 { .driver_data = MT_CLS_NSMU, 1268 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1269 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1270 1271 /* eGalax devices (resistive) */ 1272 { .driver_data = MT_CLS_EGALAX, 1273 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1274 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1275 { .driver_data = MT_CLS_EGALAX, 1276 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1277 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1278 1279 /* eGalax devices (capacitive) */ 1280 { .driver_data = MT_CLS_EGALAX_SERIAL, 1281 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1282 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1283 { .driver_data = MT_CLS_EGALAX, 1284 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1285 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1286 { .driver_data = MT_CLS_EGALAX_SERIAL, 1287 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1288 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1289 { .driver_data = MT_CLS_EGALAX_SERIAL, 1290 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1291 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1292 { .driver_data = MT_CLS_EGALAX_SERIAL, 1293 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1294 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1295 { .driver_data = MT_CLS_EGALAX_SERIAL, 1296 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1297 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1298 { .driver_data = MT_CLS_EGALAX, 1299 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1300 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1301 { .driver_data = MT_CLS_EGALAX, 1302 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1303 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1304 { .driver_data = MT_CLS_EGALAX_SERIAL, 1305 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1306 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1307 { .driver_data = MT_CLS_EGALAX, 1308 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1309 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1310 { .driver_data = MT_CLS_EGALAX, 1311 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1312 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1313 { .driver_data = MT_CLS_EGALAX, 1314 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1315 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1316 { .driver_data = MT_CLS_EGALAX, 1317 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1318 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1319 { .driver_data = MT_CLS_EGALAX_SERIAL, 1320 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1321 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1322 { .driver_data = MT_CLS_EGALAX_SERIAL, 1323 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1324 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1325 { .driver_data = MT_CLS_EGALAX_SERIAL, 1326 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1327 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1328 1329 /* Elitegroup panel */ 1330 { .driver_data = MT_CLS_SERIAL, 1331 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1332 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1333 1334 /* Flatfrog Panels */ 1335 { .driver_data = MT_CLS_FLATFROG, 1336 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1337 USB_DEVICE_ID_MULTITOUCH_3200) }, 1338 1339 /* FocalTech Panels */ 1340 { .driver_data = MT_CLS_SERIAL, 1341 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1342 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1343 1344 /* GeneralTouch panel */ 1345 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1346 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1347 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1348 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1349 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1350 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1351 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1352 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1353 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1354 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1355 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1356 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1357 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1358 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1359 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1360 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1361 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1362 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1363 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1364 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1365 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1366 1367 /* Gametel game controller */ 1368 { .driver_data = MT_CLS_NSMU, 1369 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1370 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1371 1372 /* GoodTouch panels */ 1373 { .driver_data = MT_CLS_NSMU, 1374 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1375 USB_DEVICE_ID_GOODTOUCH_000f) }, 1376 1377 /* Hanvon panels */ 1378 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1379 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1380 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1381 1382 /* Ilitek dual touch panel */ 1383 { .driver_data = MT_CLS_NSMU, 1384 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1385 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1386 1387 /* MosArt panels */ 1388 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1389 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1390 USB_DEVICE_ID_ASUS_T91MT)}, 1391 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1392 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1393 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1394 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1395 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1396 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1397 1398 /* Panasonic panels */ 1399 { .driver_data = MT_CLS_PANASONIC, 1400 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1401 USB_DEVICE_ID_PANABOARD_UBT780) }, 1402 { .driver_data = MT_CLS_PANASONIC, 1403 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1404 USB_DEVICE_ID_PANABOARD_UBT880) }, 1405 1406 /* Novatek Panel */ 1407 { .driver_data = MT_CLS_NSMU, 1408 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1409 USB_DEVICE_ID_NOVATEK_PCT) }, 1410 1411 /* Ntrig Panel */ 1412 { .driver_data = MT_CLS_NSMU, 1413 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1414 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1415 1416 /* PixArt optical touch screen */ 1417 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1418 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1419 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1420 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1421 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1422 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1423 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1424 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1425 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1426 1427 /* PixCir-based panels */ 1428 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1429 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1430 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1431 1432 /* Quanta-based panels */ 1433 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1434 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1435 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1436 1437 /* Stantum panels */ 1438 { .driver_data = MT_CLS_CONFIDENCE, 1439 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1440 USB_DEVICE_ID_MTP_STM)}, 1441 1442 /* TopSeed panels */ 1443 { .driver_data = MT_CLS_TOPSEED, 1444 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1445 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1446 1447 /* Touch International panels */ 1448 { .driver_data = MT_CLS_NSMU, 1449 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1450 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1451 1452 /* Unitec panels */ 1453 { .driver_data = MT_CLS_NSMU, 1454 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1455 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1456 { .driver_data = MT_CLS_NSMU, 1457 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1458 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1459 1460 /* VTL panels */ 1461 { .driver_data = MT_CLS_VTL, 1462 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1463 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1464 1465 /* Wistron panels */ 1466 { .driver_data = MT_CLS_NSMU, 1467 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1468 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1469 1470 /* XAT */ 1471 { .driver_data = MT_CLS_NSMU, 1472 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1473 USB_DEVICE_ID_XAT_CSR) }, 1474 1475 /* Xiroku */ 1476 { .driver_data = MT_CLS_NSMU, 1477 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1478 USB_DEVICE_ID_XIROKU_SPX) }, 1479 { .driver_data = MT_CLS_NSMU, 1480 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1481 USB_DEVICE_ID_XIROKU_MPX) }, 1482 { .driver_data = MT_CLS_NSMU, 1483 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1484 USB_DEVICE_ID_XIROKU_CSR) }, 1485 { .driver_data = MT_CLS_NSMU, 1486 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1487 USB_DEVICE_ID_XIROKU_SPX1) }, 1488 { .driver_data = MT_CLS_NSMU, 1489 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1490 USB_DEVICE_ID_XIROKU_MPX1) }, 1491 { .driver_data = MT_CLS_NSMU, 1492 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1493 USB_DEVICE_ID_XIROKU_CSR1) }, 1494 { .driver_data = MT_CLS_NSMU, 1495 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1496 USB_DEVICE_ID_XIROKU_SPX2) }, 1497 { .driver_data = MT_CLS_NSMU, 1498 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1499 USB_DEVICE_ID_XIROKU_MPX2) }, 1500 { .driver_data = MT_CLS_NSMU, 1501 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1502 USB_DEVICE_ID_XIROKU_CSR2) }, 1503 1504 /* Generic MT device */ 1505 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1506 1507 /* Generic Win 8 certified MT device */ 1508 { .driver_data = MT_CLS_WIN_8, 1509 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1510 HID_ANY_ID, HID_ANY_ID) }, 1511 { } 1512 }; 1513 MODULE_DEVICE_TABLE(hid, mt_devices); 1514 1515 static const struct hid_usage_id mt_grabbed_usages[] = { 1516 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1517 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1518 }; 1519 1520 static struct hid_driver mt_driver = { 1521 .name = "hid-multitouch", 1522 .id_table = mt_devices, 1523 .probe = mt_probe, 1524 .remove = mt_remove, 1525 .input_mapping = mt_input_mapping, 1526 .input_mapped = mt_input_mapped, 1527 .input_configured = mt_input_configured, 1528 .feature_mapping = mt_feature_mapping, 1529 .usage_table = mt_grabbed_usages, 1530 .event = mt_event, 1531 .report = mt_report, 1532 #ifdef CONFIG_PM 1533 .reset_resume = mt_reset_resume, 1534 .resume = mt_resume, 1535 #endif 1536 }; 1537 module_hid_driver(mt_driver); 1538