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