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 unsigned long initial_quirks; /* initial quirks state */ 112 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 113 __s16 inputmode_index; /* InputMode HID feature index in the report */ 114 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 115 -1 if non-existent */ 116 __u8 inputmode_value; /* InputMode HID feature value */ 117 __u8 num_received; /* how many contacts we received */ 118 __u8 num_expected; /* expected last contact index */ 119 __u8 maxcontacts; 120 __u8 touches_by_report; /* how many touches are present in one report: 121 * 1 means we should use a serial protocol 122 * > 1 means hybrid (multitouch) protocol */ 123 __u8 buttons_count; /* number of physical buttons per touchpad */ 124 bool is_buttonpad; /* is this device a button pad? */ 125 bool serial_maybe; /* need to check for serial protocol */ 126 bool curvalid; /* is the current contact valid? */ 127 unsigned mt_flags; /* flags to pass to input-mt */ 128 }; 129 130 static void mt_post_parse_default_settings(struct mt_device *td); 131 static void mt_post_parse(struct mt_device *td); 132 133 /* classes of device behavior */ 134 #define MT_CLS_DEFAULT 0x0001 135 136 #define MT_CLS_SERIAL 0x0002 137 #define MT_CLS_CONFIDENCE 0x0003 138 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 139 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 140 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 141 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 142 /* reserved 0x0008 */ 143 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 144 #define MT_CLS_NSMU 0x000a 145 /* reserved 0x0010 */ 146 /* reserved 0x0011 */ 147 #define MT_CLS_WIN_8 0x0012 148 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 149 150 /* vendor specific classes */ 151 #define MT_CLS_3M 0x0101 152 /* reserved 0x0102 */ 153 #define MT_CLS_EGALAX 0x0103 154 #define MT_CLS_EGALAX_SERIAL 0x0104 155 #define MT_CLS_TOPSEED 0x0105 156 #define MT_CLS_PANASONIC 0x0106 157 #define MT_CLS_FLATFROG 0x0107 158 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 159 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 160 #define MT_CLS_VTL 0x0110 161 162 #define MT_DEFAULT_MAXCONTACT 10 163 #define MT_MAX_MAXCONTACT 250 164 165 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 166 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 167 168 /* 169 * these device-dependent functions determine what slot corresponds 170 * to a valid contact that was just read. 171 */ 172 173 static int cypress_compute_slot(struct mt_device *td) 174 { 175 if (td->curdata.contactid != 0 || td->num_received == 0) 176 return td->curdata.contactid; 177 else 178 return -1; 179 } 180 181 static struct mt_class mt_classes[] = { 182 { .name = MT_CLS_DEFAULT, 183 .quirks = MT_QUIRK_ALWAYS_VALID | 184 MT_QUIRK_CONTACT_CNT_ACCURATE }, 185 { .name = MT_CLS_NSMU, 186 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 187 { .name = MT_CLS_SERIAL, 188 .quirks = MT_QUIRK_ALWAYS_VALID}, 189 { .name = MT_CLS_CONFIDENCE, 190 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 191 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 192 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 193 MT_QUIRK_SLOT_IS_CONTACTID }, 194 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 195 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 196 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 197 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 198 .quirks = MT_QUIRK_VALID_IS_INRANGE | 199 MT_QUIRK_SLOT_IS_CONTACTID, 200 .maxcontacts = 2 }, 201 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 202 .quirks = MT_QUIRK_VALID_IS_INRANGE | 203 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 204 .maxcontacts = 2 }, 205 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 206 .quirks = MT_QUIRK_VALID_IS_INRANGE | 207 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 208 { .name = MT_CLS_WIN_8, 209 .quirks = MT_QUIRK_ALWAYS_VALID | 210 MT_QUIRK_IGNORE_DUPLICATES | 211 MT_QUIRK_HOVERING | 212 MT_QUIRK_CONTACT_CNT_ACCURATE }, 213 { .name = MT_CLS_EXPORT_ALL_INPUTS, 214 .quirks = MT_QUIRK_ALWAYS_VALID | 215 MT_QUIRK_CONTACT_CNT_ACCURATE, 216 .export_all_inputs = true }, 217 218 /* 219 * vendor specific classes 220 */ 221 { .name = MT_CLS_3M, 222 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 223 MT_QUIRK_SLOT_IS_CONTACTID, 224 .sn_move = 2048, 225 .sn_width = 128, 226 .sn_height = 128, 227 .maxcontacts = 60, 228 }, 229 { .name = MT_CLS_EGALAX, 230 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 231 MT_QUIRK_VALID_IS_INRANGE, 232 .sn_move = 4096, 233 .sn_pressure = 32, 234 }, 235 { .name = MT_CLS_EGALAX_SERIAL, 236 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 237 MT_QUIRK_ALWAYS_VALID, 238 .sn_move = 4096, 239 .sn_pressure = 32, 240 }, 241 { .name = MT_CLS_TOPSEED, 242 .quirks = MT_QUIRK_ALWAYS_VALID, 243 .is_indirect = true, 244 .maxcontacts = 2, 245 }, 246 { .name = MT_CLS_PANASONIC, 247 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 248 .maxcontacts = 4 }, 249 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 250 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 251 MT_QUIRK_VALID_IS_INRANGE | 252 MT_QUIRK_SLOT_IS_CONTACTID, 253 .maxcontacts = 2 254 }, 255 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 256 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 257 MT_QUIRK_SLOT_IS_CONTACTID 258 }, 259 260 { .name = MT_CLS_FLATFROG, 261 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 262 MT_QUIRK_NO_AREA, 263 .sn_move = 2048, 264 .maxcontacts = 40, 265 }, 266 { .name = MT_CLS_VTL, 267 .quirks = MT_QUIRK_ALWAYS_VALID | 268 MT_QUIRK_CONTACT_CNT_ACCURATE | 269 MT_QUIRK_FORCE_GET_FEATURE, 270 }, 271 { } 272 }; 273 274 static ssize_t mt_show_quirks(struct device *dev, 275 struct device_attribute *attr, 276 char *buf) 277 { 278 struct hid_device *hdev = to_hid_device(dev); 279 struct mt_device *td = hid_get_drvdata(hdev); 280 281 return sprintf(buf, "%u\n", td->mtclass.quirks); 282 } 283 284 static ssize_t mt_set_quirks(struct device *dev, 285 struct device_attribute *attr, 286 const char *buf, size_t count) 287 { 288 struct hid_device *hdev = to_hid_device(dev); 289 struct mt_device *td = hid_get_drvdata(hdev); 290 291 unsigned long val; 292 293 if (kstrtoul(buf, 0, &val)) 294 return -EINVAL; 295 296 td->mtclass.quirks = val; 297 298 if (td->cc_index < 0) 299 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 300 301 return count; 302 } 303 304 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 305 306 static struct attribute *sysfs_attrs[] = { 307 &dev_attr_quirks.attr, 308 NULL 309 }; 310 311 static struct attribute_group mt_attribute_group = { 312 .attrs = sysfs_attrs 313 }; 314 315 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 316 { 317 struct mt_device *td = hid_get_drvdata(hdev); 318 int ret, size = hid_report_len(report); 319 u8 *buf; 320 321 /* 322 * Do not fetch the feature report if the device has been explicitly 323 * marked as non-capable. 324 */ 325 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS) 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_CONFIDENCE; 508 mt_store_field(usage, td, hi); 509 return 1; 510 case HID_DG_TIPSWITCH: 511 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 512 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 513 mt_store_field(usage, td, hi); 514 return 1; 515 case HID_DG_CONTACTID: 516 mt_store_field(usage, td, hi); 517 td->touches_by_report++; 518 td->mt_report_id = field->report->id; 519 return 1; 520 case HID_DG_WIDTH: 521 hid_map_usage(hi, usage, bit, max, 522 EV_ABS, ABS_MT_TOUCH_MAJOR); 523 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 524 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 525 cls->sn_width); 526 mt_store_field(usage, td, hi); 527 return 1; 528 case HID_DG_HEIGHT: 529 hid_map_usage(hi, usage, bit, max, 530 EV_ABS, ABS_MT_TOUCH_MINOR); 531 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 532 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 533 cls->sn_height); 534 input_set_abs_params(hi->input, 535 ABS_MT_ORIENTATION, 0, 1, 0, 0); 536 } 537 mt_store_field(usage, td, hi); 538 return 1; 539 case HID_DG_TIPPRESSURE: 540 hid_map_usage(hi, usage, bit, max, 541 EV_ABS, ABS_MT_PRESSURE); 542 set_abs(hi->input, ABS_MT_PRESSURE, field, 543 cls->sn_pressure); 544 mt_store_field(usage, td, hi); 545 return 1; 546 case HID_DG_CONTACTCOUNT: 547 /* Ignore if indexes are out of bounds. */ 548 if (field->index >= field->report->maxfield || 549 usage->usage_index >= field->report_count) 550 return 1; 551 td->cc_index = field->index; 552 td->cc_value_index = usage->usage_index; 553 return 1; 554 case HID_DG_CONTACTMAX: 555 /* we don't set td->last_slot_field as contactcount and 556 * contact max are global to the report */ 557 return -1; 558 case HID_DG_TOUCH: 559 /* Legacy devices use TIPSWITCH and not TOUCH. 560 * Let's just ignore this field. */ 561 return -1; 562 } 563 /* let hid-input decide for the others */ 564 return 0; 565 566 case HID_UP_BUTTON: 567 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 568 /* 569 * MS PTP spec says that external buttons left and right have 570 * usages 2 and 3. 571 */ 572 if (cls->name == MT_CLS_WIN_8 && 573 field->application == HID_DG_TOUCHPAD && 574 (usage->hid & HID_USAGE) > 1) 575 code--; 576 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 577 input_set_capability(hi->input, EV_KEY, code); 578 return 1; 579 580 case 0xff000000: 581 /* we do not want to map these: no input-oriented meaning */ 582 return -1; 583 } 584 585 return 0; 586 } 587 588 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi, 589 struct hid_field *field, struct hid_usage *usage, 590 unsigned long **bit, int *max) 591 { 592 if (usage->type == EV_KEY || usage->type == EV_ABS) 593 set_bit(usage->type, hi->input->evbit); 594 595 return -1; 596 } 597 598 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 599 { 600 __s32 quirks = td->mtclass.quirks; 601 602 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 603 return td->curdata.contactid; 604 605 if (quirks & MT_QUIRK_CYPRESS) 606 return cypress_compute_slot(td); 607 608 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 609 return td->num_received; 610 611 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 612 return td->curdata.contactid - 1; 613 614 return input_mt_get_slot_by_key(input, td->curdata.contactid); 615 } 616 617 /* 618 * this function is called when a whole contact has been processed, 619 * so that it can assign it to a slot and store the data there 620 */ 621 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 622 { 623 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 624 td->num_received >= td->num_expected) 625 return; 626 627 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 628 int active; 629 int slotnum = mt_compute_slot(td, input); 630 struct mt_slot *s = &td->curdata; 631 struct input_mt *mt = input->mt; 632 633 if (slotnum < 0 || slotnum >= td->maxcontacts) 634 return; 635 636 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 637 struct input_mt_slot *slot = &mt->slots[slotnum]; 638 if (input_mt_is_active(slot) && 639 input_mt_is_used(mt, slot)) 640 return; 641 } 642 643 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 644 s->confidence_state = 1; 645 active = (s->touch_state || s->inrange_state) && 646 s->confidence_state; 647 648 input_mt_slot(input, slotnum); 649 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 650 if (active) { 651 /* this finger is in proximity of the sensor */ 652 int wide = (s->w > s->h); 653 /* divided by two to match visual scale of touch */ 654 int major = max(s->w, s->h) >> 1; 655 int minor = min(s->w, s->h) >> 1; 656 657 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 658 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 659 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 660 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 661 input_event(input, EV_ABS, ABS_MT_DISTANCE, 662 !s->touch_state); 663 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 664 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 665 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 666 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 667 } 668 } 669 670 td->num_received++; 671 } 672 673 /* 674 * this function is called when a whole packet has been received and processed, 675 * so that it can decide what to send to the input layer. 676 */ 677 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 678 { 679 input_mt_sync_frame(input); 680 input_sync(input); 681 td->num_received = 0; 682 } 683 684 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 685 struct hid_usage *usage, __s32 value) 686 { 687 /* we will handle the hidinput part later, now remains hiddev */ 688 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 689 hid->hiddev_hid_event(hid, field, usage, value); 690 691 return 1; 692 } 693 694 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 695 struct hid_usage *usage, __s32 value) 696 { 697 struct mt_device *td = hid_get_drvdata(hid); 698 __s32 quirks = td->mtclass.quirks; 699 struct input_dev *input = field->hidinput->input; 700 701 if (hid->claimed & HID_CLAIMED_INPUT) { 702 switch (usage->hid) { 703 case HID_DG_INRANGE: 704 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 705 td->curvalid = value; 706 if (quirks & MT_QUIRK_HOVERING) 707 td->curdata.inrange_state = value; 708 break; 709 case HID_DG_TIPSWITCH: 710 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 711 td->curvalid = value; 712 td->curdata.touch_state = value; 713 break; 714 case HID_DG_CONFIDENCE: 715 if (quirks & MT_QUIRK_CONFIDENCE) 716 td->curdata.confidence_state = value; 717 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 718 td->curvalid = value; 719 break; 720 case HID_DG_CONTACTID: 721 td->curdata.contactid = value; 722 break; 723 case HID_DG_TIPPRESSURE: 724 td->curdata.p = value; 725 break; 726 case HID_GD_X: 727 if (usage->code == ABS_MT_TOOL_X) 728 td->curdata.cx = value; 729 else 730 td->curdata.x = value; 731 break; 732 case HID_GD_Y: 733 if (usage->code == ABS_MT_TOOL_Y) 734 td->curdata.cy = value; 735 else 736 td->curdata.y = value; 737 break; 738 case HID_DG_WIDTH: 739 td->curdata.w = value; 740 break; 741 case HID_DG_HEIGHT: 742 td->curdata.h = value; 743 break; 744 case HID_DG_CONTACTCOUNT: 745 break; 746 case HID_DG_TOUCH: 747 /* do nothing */ 748 break; 749 750 default: 751 if (usage->type) 752 input_event(input, usage->type, usage->code, 753 value); 754 return; 755 } 756 757 if (usage->usage_index + 1 == field->report_count) { 758 /* we only take into account the last report. */ 759 if (usage->hid == td->last_slot_field) 760 mt_complete_slot(td, field->hidinput->input); 761 } 762 763 } 764 } 765 766 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 767 { 768 struct mt_device *td = hid_get_drvdata(hid); 769 struct hid_field *field; 770 unsigned count; 771 int r, n; 772 773 /* 774 * Includes multi-packet support where subsequent 775 * packets are sent with zero contactcount. 776 */ 777 if (td->cc_index >= 0) { 778 struct hid_field *field = report->field[td->cc_index]; 779 int value = field->value[td->cc_value_index]; 780 if (value) 781 td->num_expected = value; 782 } 783 784 for (r = 0; r < report->maxfield; r++) { 785 field = report->field[r]; 786 count = field->report_count; 787 788 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 789 continue; 790 791 for (n = 0; n < count; n++) 792 mt_process_mt_event(hid, field, &field->usage[n], 793 field->value[n]); 794 } 795 796 if (td->num_received >= td->num_expected) 797 mt_sync_frame(td, report->field[0]->hidinput->input); 798 } 799 800 static int mt_touch_input_configured(struct hid_device *hdev, 801 struct hid_input *hi) 802 { 803 struct mt_device *td = hid_get_drvdata(hdev); 804 struct mt_class *cls = &td->mtclass; 805 struct input_dev *input = hi->input; 806 int ret; 807 808 if (!td->maxcontacts) 809 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 810 811 mt_post_parse(td); 812 if (td->serial_maybe) 813 mt_post_parse_default_settings(td); 814 815 if (cls->is_indirect) 816 td->mt_flags |= INPUT_MT_POINTER; 817 818 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 819 td->mt_flags |= INPUT_MT_DROP_UNUSED; 820 821 /* check for clickpads */ 822 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 823 td->is_buttonpad = true; 824 825 if (td->is_buttonpad) 826 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 827 828 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 829 if (ret) 830 return ret; 831 832 td->mt_flags = 0; 833 return 0; 834 } 835 836 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 837 struct hid_field *field, struct hid_usage *usage, 838 unsigned long **bit, int *max) 839 { 840 struct mt_device *td = hid_get_drvdata(hdev); 841 842 /* 843 * If mtclass.export_all_inputs is not set, only map fields from 844 * TouchScreen or TouchPad collections. We need to ignore fields 845 * that belong to other collections such as Mouse that might have 846 * the same GenericDesktop usages. 847 */ 848 if (!td->mtclass.export_all_inputs && 849 field->application != HID_DG_TOUCHSCREEN && 850 field->application != HID_DG_PEN && 851 field->application != HID_DG_TOUCHPAD && 852 field->application != HID_GD_KEYBOARD && 853 field->application != HID_CP_CONSUMER_CONTROL) 854 return -1; 855 856 /* 857 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 858 * for the stylus. 859 * The check for mt_report_id ensures we don't process 860 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 861 * collection, but within the report ID. 862 */ 863 if (field->physical == HID_DG_STYLUS) 864 return 0; 865 else if ((field->physical == 0) && 866 (field->report->id != td->mt_report_id) && 867 (td->mt_report_id != -1)) 868 return 0; 869 870 if (field->application == HID_DG_TOUCHSCREEN || 871 field->application == HID_DG_TOUCHPAD) 872 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 873 874 /* let hid-core decide for the others */ 875 return 0; 876 } 877 878 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 879 struct hid_field *field, struct hid_usage *usage, 880 unsigned long **bit, int *max) 881 { 882 /* 883 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 884 * for the stylus. 885 */ 886 if (field->physical == HID_DG_STYLUS) 887 return 0; 888 889 if (field->application == HID_DG_TOUCHSCREEN || 890 field->application == HID_DG_TOUCHPAD) 891 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max); 892 893 /* let hid-core decide for the others */ 894 return 0; 895 } 896 897 static int mt_event(struct hid_device *hid, struct hid_field *field, 898 struct hid_usage *usage, __s32 value) 899 { 900 struct mt_device *td = hid_get_drvdata(hid); 901 902 if (field->report->id == td->mt_report_id) 903 return mt_touch_event(hid, field, usage, value); 904 905 return 0; 906 } 907 908 static void mt_report(struct hid_device *hid, struct hid_report *report) 909 { 910 struct mt_device *td = hid_get_drvdata(hid); 911 struct hid_field *field = report->field[0]; 912 913 if (!(hid->claimed & HID_CLAIMED_INPUT)) 914 return; 915 916 if (report->id == td->mt_report_id) 917 return mt_touch_report(hid, report); 918 919 if (field && field->hidinput && field->hidinput->input) 920 input_sync(field->hidinput->input); 921 } 922 923 static void mt_set_input_mode(struct hid_device *hdev) 924 { 925 struct mt_device *td = hid_get_drvdata(hdev); 926 struct hid_report *r; 927 struct hid_report_enum *re; 928 struct mt_class *cls = &td->mtclass; 929 char *buf; 930 int report_len; 931 932 if (td->inputmode < 0) 933 return; 934 935 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 936 r = re->report_id_hash[td->inputmode]; 937 if (r) { 938 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 939 report_len = hid_report_len(r); 940 buf = hid_alloc_report_buf(r, GFP_KERNEL); 941 if (!buf) { 942 hid_err(hdev, "failed to allocate buffer for report\n"); 943 return; 944 } 945 hid_hw_raw_request(hdev, r->id, buf, report_len, 946 HID_FEATURE_REPORT, 947 HID_REQ_GET_REPORT); 948 kfree(buf); 949 } 950 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 951 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 952 } 953 } 954 955 static void mt_set_maxcontacts(struct hid_device *hdev) 956 { 957 struct mt_device *td = hid_get_drvdata(hdev); 958 struct hid_report *r; 959 struct hid_report_enum *re; 960 int fieldmax, max; 961 962 if (td->maxcontact_report_id < 0) 963 return; 964 965 if (!td->mtclass.maxcontacts) 966 return; 967 968 re = &hdev->report_enum[HID_FEATURE_REPORT]; 969 r = re->report_id_hash[td->maxcontact_report_id]; 970 if (r) { 971 max = td->mtclass.maxcontacts; 972 fieldmax = r->field[0]->logical_maximum; 973 max = min(fieldmax, max); 974 if (r->field[0]->value[0] != max) { 975 r->field[0]->value[0] = max; 976 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 977 } 978 } 979 } 980 981 static void mt_post_parse_default_settings(struct mt_device *td) 982 { 983 __s32 quirks = td->mtclass.quirks; 984 985 /* unknown serial device needs special quirks */ 986 if (td->touches_by_report == 1) { 987 quirks |= MT_QUIRK_ALWAYS_VALID; 988 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 989 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 990 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 991 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 992 } 993 994 td->mtclass.quirks = quirks; 995 } 996 997 static void mt_post_parse(struct mt_device *td) 998 { 999 struct mt_fields *f = td->fields; 1000 struct mt_class *cls = &td->mtclass; 1001 1002 if (td->touches_by_report > 0) { 1003 int field_count_per_touch = f->length / td->touches_by_report; 1004 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1005 } 1006 1007 if (td->cc_index < 0) 1008 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1009 } 1010 1011 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1012 { 1013 struct mt_device *td = hid_get_drvdata(hdev); 1014 char *name; 1015 const char *suffix = NULL; 1016 struct hid_field *field = hi->report->field[0]; 1017 int ret; 1018 1019 if (hi->report->id == td->mt_report_id) { 1020 ret = mt_touch_input_configured(hdev, hi); 1021 if (ret) 1022 return ret; 1023 } 1024 1025 /* 1026 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1027 * for the stylus. Check this first, and then rely on the application 1028 * field. 1029 */ 1030 if (hi->report->field[0]->physical == 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 } else { 1035 switch (field->application) { 1036 case HID_GD_KEYBOARD: 1037 suffix = "Keyboard"; 1038 break; 1039 case HID_GD_KEYPAD: 1040 suffix = "Keypad"; 1041 break; 1042 case HID_GD_MOUSE: 1043 suffix = "Mouse"; 1044 break; 1045 case HID_DG_STYLUS: 1046 suffix = "Pen"; 1047 /* force BTN_STYLUS to allow tablet matching in udev */ 1048 __set_bit(BTN_STYLUS, hi->input->keybit); 1049 break; 1050 case HID_DG_TOUCHSCREEN: 1051 /* we do not set suffix = "Touchscreen" */ 1052 break; 1053 case HID_DG_TOUCHPAD: 1054 suffix = "Touchpad"; 1055 break; 1056 case HID_GD_SYSTEM_CONTROL: 1057 suffix = "System Control"; 1058 break; 1059 case HID_CP_CONSUMER_CONTROL: 1060 suffix = "Consumer Control"; 1061 break; 1062 default: 1063 suffix = "UNKNOWN"; 1064 break; 1065 } 1066 } 1067 1068 if (suffix) { 1069 name = devm_kzalloc(&hi->input->dev, 1070 strlen(hdev->name) + strlen(suffix) + 2, 1071 GFP_KERNEL); 1072 if (name) { 1073 sprintf(name, "%s %s", hdev->name, suffix); 1074 hi->input->name = name; 1075 } 1076 } 1077 1078 return 0; 1079 } 1080 1081 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1082 { 1083 int ret, i; 1084 struct mt_device *td; 1085 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1086 1087 for (i = 0; mt_classes[i].name ; i++) { 1088 if (id->driver_data == mt_classes[i].name) { 1089 mtclass = &(mt_classes[i]); 1090 break; 1091 } 1092 } 1093 1094 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1095 if (!td) { 1096 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1097 return -ENOMEM; 1098 } 1099 td->mtclass = *mtclass; 1100 td->inputmode = -1; 1101 td->maxcontact_report_id = -1; 1102 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1103 td->cc_index = -1; 1104 td->mt_report_id = -1; 1105 hid_set_drvdata(hdev, td); 1106 1107 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1108 GFP_KERNEL); 1109 if (!td->fields) { 1110 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1111 return -ENOMEM; 1112 } 1113 1114 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1115 td->serial_maybe = true; 1116 1117 /* 1118 * Store the initial quirk state 1119 */ 1120 td->initial_quirks = hdev->quirks; 1121 1122 /* This allows the driver to correctly support devices 1123 * that emit events over several HID messages. 1124 */ 1125 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1126 1127 /* 1128 * This allows the driver to handle different input sensors 1129 * that emits events through different reports on the same HID 1130 * device. 1131 */ 1132 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1133 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1134 1135 /* 1136 * Some multitouch screens do not like to be polled for input 1137 * reports. Fortunately, the Win8 spec says that all touches 1138 * should be sent during each report, making the initialization 1139 * of input reports unnecessary. For Win7 devices, well, let's hope 1140 * they will still be happy (this is only be a problem if a touch 1141 * was already there while probing the device). 1142 * 1143 * In addition some touchpads do not behave well if we read 1144 * all feature reports from them. Instead we prevent 1145 * initial report fetching and then selectively fetch each 1146 * report we are interested in. 1147 */ 1148 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1149 1150 ret = hid_parse(hdev); 1151 if (ret != 0) 1152 return ret; 1153 1154 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1155 if (ret) 1156 return ret; 1157 1158 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1159 if (ret) 1160 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1161 hdev->name); 1162 1163 mt_set_maxcontacts(hdev); 1164 mt_set_input_mode(hdev); 1165 1166 /* release .fields memory as it is not used anymore */ 1167 devm_kfree(&hdev->dev, td->fields); 1168 td->fields = NULL; 1169 1170 return 0; 1171 } 1172 1173 #ifdef CONFIG_PM 1174 static void mt_release_contacts(struct hid_device *hid) 1175 { 1176 struct hid_input *hidinput; 1177 1178 list_for_each_entry(hidinput, &hid->inputs, list) { 1179 struct input_dev *input_dev = hidinput->input; 1180 struct input_mt *mt = input_dev->mt; 1181 int i; 1182 1183 if (mt) { 1184 for (i = 0; i < mt->num_slots; i++) { 1185 input_mt_slot(input_dev, i); 1186 input_mt_report_slot_state(input_dev, 1187 MT_TOOL_FINGER, 1188 false); 1189 } 1190 input_mt_sync_frame(input_dev); 1191 input_sync(input_dev); 1192 } 1193 } 1194 } 1195 1196 static int mt_reset_resume(struct hid_device *hdev) 1197 { 1198 mt_release_contacts(hdev); 1199 mt_set_maxcontacts(hdev); 1200 mt_set_input_mode(hdev); 1201 return 0; 1202 } 1203 1204 static int mt_resume(struct hid_device *hdev) 1205 { 1206 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1207 * It should be safe to send it to other devices too. 1208 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1209 1210 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1211 1212 return 0; 1213 } 1214 #endif 1215 1216 static void mt_remove(struct hid_device *hdev) 1217 { 1218 struct mt_device *td = hid_get_drvdata(hdev); 1219 1220 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1221 hid_hw_stop(hdev); 1222 hdev->quirks = td->initial_quirks; 1223 } 1224 1225 /* 1226 * This list contains only: 1227 * - VID/PID of products not working with the default multitouch handling 1228 * - 2 generic rules. 1229 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1230 */ 1231 static const struct hid_device_id mt_devices[] = { 1232 1233 /* 3M panels */ 1234 { .driver_data = MT_CLS_3M, 1235 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1236 USB_DEVICE_ID_3M1968) }, 1237 { .driver_data = MT_CLS_3M, 1238 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1239 USB_DEVICE_ID_3M2256) }, 1240 { .driver_data = MT_CLS_3M, 1241 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1242 USB_DEVICE_ID_3M3266) }, 1243 1244 /* Anton devices */ 1245 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1246 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1247 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1248 1249 /* Atmel panels */ 1250 { .driver_data = MT_CLS_SERIAL, 1251 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1252 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1253 1254 /* Baanto multitouch devices */ 1255 { .driver_data = MT_CLS_NSMU, 1256 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1257 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1258 1259 /* Cando panels */ 1260 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1261 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1262 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1263 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1264 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1265 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1266 1267 /* Chunghwa Telecom touch panels */ 1268 { .driver_data = MT_CLS_NSMU, 1269 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1270 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1271 1272 /* CJTouch panels */ 1273 { .driver_data = MT_CLS_NSMU, 1274 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1275 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1276 { .driver_data = MT_CLS_NSMU, 1277 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1278 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1279 1280 /* CVTouch panels */ 1281 { .driver_data = MT_CLS_NSMU, 1282 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1283 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1284 1285 /* eGalax devices (resistive) */ 1286 { .driver_data = MT_CLS_EGALAX, 1287 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1288 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1289 { .driver_data = MT_CLS_EGALAX, 1290 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1291 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1292 1293 /* eGalax devices (capacitive) */ 1294 { .driver_data = MT_CLS_EGALAX_SERIAL, 1295 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1296 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1297 { .driver_data = MT_CLS_EGALAX, 1298 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1299 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1300 { .driver_data = MT_CLS_EGALAX_SERIAL, 1301 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1302 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1303 { .driver_data = MT_CLS_EGALAX_SERIAL, 1304 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1305 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1306 { .driver_data = MT_CLS_EGALAX_SERIAL, 1307 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1308 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1309 { .driver_data = MT_CLS_EGALAX_SERIAL, 1310 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1311 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1312 { .driver_data = MT_CLS_EGALAX, 1313 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1314 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1315 { .driver_data = MT_CLS_EGALAX, 1316 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1317 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1318 { .driver_data = MT_CLS_EGALAX_SERIAL, 1319 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1320 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1321 { .driver_data = MT_CLS_EGALAX, 1322 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1323 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1324 { .driver_data = MT_CLS_EGALAX, 1325 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1326 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1327 { .driver_data = MT_CLS_EGALAX, 1328 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1329 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1330 { .driver_data = MT_CLS_EGALAX, 1331 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1332 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1333 { .driver_data = MT_CLS_EGALAX_SERIAL, 1334 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1335 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1336 { .driver_data = MT_CLS_EGALAX_SERIAL, 1337 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1338 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1339 { .driver_data = MT_CLS_EGALAX_SERIAL, 1340 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1341 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1342 1343 /* Elitegroup panel */ 1344 { .driver_data = MT_CLS_SERIAL, 1345 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1346 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1347 1348 /* Flatfrog Panels */ 1349 { .driver_data = MT_CLS_FLATFROG, 1350 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1351 USB_DEVICE_ID_MULTITOUCH_3200) }, 1352 1353 /* FocalTech Panels */ 1354 { .driver_data = MT_CLS_SERIAL, 1355 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1356 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1357 1358 /* GeneralTouch panel */ 1359 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1360 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1361 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1362 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1363 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1364 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1365 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1366 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1367 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1368 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1369 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1370 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1371 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1372 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1373 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1374 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1375 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1376 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1377 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1378 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1379 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1380 1381 /* Gametel game controller */ 1382 { .driver_data = MT_CLS_NSMU, 1383 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1384 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1385 1386 /* GoodTouch panels */ 1387 { .driver_data = MT_CLS_NSMU, 1388 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1389 USB_DEVICE_ID_GOODTOUCH_000f) }, 1390 1391 /* Hanvon panels */ 1392 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1393 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1394 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1395 1396 /* Ilitek dual touch panel */ 1397 { .driver_data = MT_CLS_NSMU, 1398 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1399 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1400 1401 /* MosArt panels */ 1402 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1403 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1404 USB_DEVICE_ID_ASUS_T91MT)}, 1405 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1406 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1407 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1408 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1409 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1410 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1411 1412 /* Panasonic panels */ 1413 { .driver_data = MT_CLS_PANASONIC, 1414 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1415 USB_DEVICE_ID_PANABOARD_UBT780) }, 1416 { .driver_data = MT_CLS_PANASONIC, 1417 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1418 USB_DEVICE_ID_PANABOARD_UBT880) }, 1419 1420 /* Novatek Panel */ 1421 { .driver_data = MT_CLS_NSMU, 1422 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1423 USB_DEVICE_ID_NOVATEK_PCT) }, 1424 1425 /* Ntrig Panel */ 1426 { .driver_data = MT_CLS_NSMU, 1427 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1428 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1429 1430 /* PixArt optical touch screen */ 1431 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1432 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1433 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1434 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1435 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1436 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1437 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1438 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1439 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1440 1441 /* PixCir-based panels */ 1442 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1443 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1444 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1445 1446 /* Quanta-based panels */ 1447 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1448 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1449 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1450 1451 /* Stantum panels */ 1452 { .driver_data = MT_CLS_CONFIDENCE, 1453 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1454 USB_DEVICE_ID_MTP_STM)}, 1455 1456 /* TopSeed panels */ 1457 { .driver_data = MT_CLS_TOPSEED, 1458 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1459 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1460 1461 /* Touch International panels */ 1462 { .driver_data = MT_CLS_NSMU, 1463 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1464 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1465 1466 /* Unitec panels */ 1467 { .driver_data = MT_CLS_NSMU, 1468 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1469 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1470 { .driver_data = MT_CLS_NSMU, 1471 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1472 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1473 1474 /* VTL panels */ 1475 { .driver_data = MT_CLS_VTL, 1476 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1477 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1478 1479 /* Wistron panels */ 1480 { .driver_data = MT_CLS_NSMU, 1481 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1482 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1483 1484 /* XAT */ 1485 { .driver_data = MT_CLS_NSMU, 1486 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1487 USB_DEVICE_ID_XAT_CSR) }, 1488 1489 /* Xiroku */ 1490 { .driver_data = MT_CLS_NSMU, 1491 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1492 USB_DEVICE_ID_XIROKU_SPX) }, 1493 { .driver_data = MT_CLS_NSMU, 1494 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1495 USB_DEVICE_ID_XIROKU_MPX) }, 1496 { .driver_data = MT_CLS_NSMU, 1497 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1498 USB_DEVICE_ID_XIROKU_CSR) }, 1499 { .driver_data = MT_CLS_NSMU, 1500 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1501 USB_DEVICE_ID_XIROKU_SPX1) }, 1502 { .driver_data = MT_CLS_NSMU, 1503 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1504 USB_DEVICE_ID_XIROKU_MPX1) }, 1505 { .driver_data = MT_CLS_NSMU, 1506 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1507 USB_DEVICE_ID_XIROKU_CSR1) }, 1508 { .driver_data = MT_CLS_NSMU, 1509 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1510 USB_DEVICE_ID_XIROKU_SPX2) }, 1511 { .driver_data = MT_CLS_NSMU, 1512 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1513 USB_DEVICE_ID_XIROKU_MPX2) }, 1514 { .driver_data = MT_CLS_NSMU, 1515 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1516 USB_DEVICE_ID_XIROKU_CSR2) }, 1517 1518 /* Generic MT device */ 1519 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1520 1521 /* Generic Win 8 certified MT device */ 1522 { .driver_data = MT_CLS_WIN_8, 1523 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1524 HID_ANY_ID, HID_ANY_ID) }, 1525 { } 1526 }; 1527 MODULE_DEVICE_TABLE(hid, mt_devices); 1528 1529 static const struct hid_usage_id mt_grabbed_usages[] = { 1530 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1531 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1532 }; 1533 1534 static struct hid_driver mt_driver = { 1535 .name = "hid-multitouch", 1536 .id_table = mt_devices, 1537 .probe = mt_probe, 1538 .remove = mt_remove, 1539 .input_mapping = mt_input_mapping, 1540 .input_mapped = mt_input_mapped, 1541 .input_configured = mt_input_configured, 1542 .feature_mapping = mt_feature_mapping, 1543 .usage_table = mt_grabbed_usages, 1544 .event = mt_event, 1545 .report = mt_report, 1546 #ifdef CONFIG_PM 1547 .reset_resume = mt_reset_resume, 1548 .resume = mt_resume, 1549 #endif 1550 }; 1551 module_hid_driver(mt_driver); 1552