1 /* 2 * HID driver for multitouch panels 3 * 4 * Copyright (c) 2010-2011 Stephane Chatty <chatty@enac.fr> 5 * Copyright (c) 2010-2011 Benjamin Tissoires <benjamin.tissoires@gmail.com> 6 * Copyright (c) 2010-2011 Ecole Nationale de l'Aviation Civile, France 7 * 8 * This code is partly based on hid-egalax.c: 9 * 10 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 11 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 12 * Copyright (c) 2010 Canonical, Ltd. 13 * 14 * This code is partly based on hid-3m-pct.c: 15 * 16 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 17 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 18 * Copyright (c) 2010 Canonical, Ltd. 19 * 20 */ 21 22 /* 23 * This program is free software; you can redistribute it and/or modify it 24 * under the terms of the GNU General Public License as published by the Free 25 * Software Foundation; either version 2 of the License, or (at your option) 26 * any later version. 27 */ 28 29 #include <linux/device.h> 30 #include <linux/hid.h> 31 #include <linux/module.h> 32 #include <linux/slab.h> 33 #include <linux/usb.h> 34 #include <linux/input/mt.h> 35 #include "usbhid/usbhid.h" 36 37 38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 40 MODULE_DESCRIPTION("HID multitouch panels"); 41 MODULE_LICENSE("GPL"); 42 43 #include "hid-ids.h" 44 45 /* quirks to control the device */ 46 #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0) 47 #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1) 48 #define MT_QUIRK_CYPRESS (1 << 2) 49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3) 50 #define MT_QUIRK_ALWAYS_VALID (1 << 4) 51 #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) 52 #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) 53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) 54 55 struct mt_slot { 56 __s32 x, y, p, w, h; 57 __s32 contactid; /* the device ContactID assigned to this slot */ 58 bool touch_state; /* is the touch valid? */ 59 bool seen_in_this_frame;/* has this slot been updated */ 60 }; 61 62 struct mt_class { 63 __s32 name; /* MT_CLS */ 64 __s32 quirks; 65 __s32 sn_move; /* Signal/noise ratio for move events */ 66 __s32 sn_width; /* Signal/noise ratio for width events */ 67 __s32 sn_height; /* Signal/noise ratio for height events */ 68 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 69 __u8 maxcontacts; 70 }; 71 72 struct mt_device { 73 struct mt_slot curdata; /* placeholder of incoming data */ 74 struct mt_class mtclass; /* our mt device class */ 75 unsigned last_field_index; /* last field index of the report */ 76 unsigned last_slot_field; /* the last field of a slot */ 77 int last_mt_collection; /* last known mt-related collection */ 78 __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ 79 __u8 num_received; /* how many contacts we received */ 80 __u8 num_expected; /* expected last contact index */ 81 __u8 maxcontacts; 82 bool curvalid; /* is the current contact valid? */ 83 struct mt_slot *slots; 84 }; 85 86 /* classes of device behavior */ 87 #define MT_CLS_DEFAULT 0x0001 88 89 #define MT_CLS_SERIAL 0x0002 90 #define MT_CLS_CONFIDENCE 0x0003 91 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 92 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 93 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 94 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 95 #define MT_CLS_DUAL_NSMU_CONTACTID 0x0008 96 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 97 98 /* vendor specific classes */ 99 #define MT_CLS_3M 0x0101 100 #define MT_CLS_CYPRESS 0x0102 101 #define MT_CLS_EGALAX 0x0103 102 #define MT_CLS_EGALAX_SERIAL 0x0104 103 104 #define MT_DEFAULT_MAXCONTACT 10 105 106 /* 107 * these device-dependent functions determine what slot corresponds 108 * to a valid contact that was just read. 109 */ 110 111 static int cypress_compute_slot(struct mt_device *td) 112 { 113 if (td->curdata.contactid != 0 || td->num_received == 0) 114 return td->curdata.contactid; 115 else 116 return -1; 117 } 118 119 static int find_slot_from_contactid(struct mt_device *td) 120 { 121 int i; 122 for (i = 0; i < td->maxcontacts; ++i) { 123 if (td->slots[i].contactid == td->curdata.contactid && 124 td->slots[i].touch_state) 125 return i; 126 } 127 for (i = 0; i < td->maxcontacts; ++i) { 128 if (!td->slots[i].seen_in_this_frame && 129 !td->slots[i].touch_state) 130 return i; 131 } 132 /* should not occurs. If this happens that means 133 * that the device sent more touches that it says 134 * in the report descriptor. It is ignored then. */ 135 return -1; 136 } 137 138 static struct mt_class mt_classes[] = { 139 { .name = MT_CLS_DEFAULT, 140 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 141 { .name = MT_CLS_SERIAL, 142 .quirks = MT_QUIRK_ALWAYS_VALID}, 143 { .name = MT_CLS_CONFIDENCE, 144 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 145 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 146 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 147 MT_QUIRK_SLOT_IS_CONTACTID }, 148 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 149 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 150 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 151 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 152 .quirks = MT_QUIRK_VALID_IS_INRANGE | 153 MT_QUIRK_SLOT_IS_CONTACTID, 154 .maxcontacts = 2 }, 155 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 156 .quirks = MT_QUIRK_VALID_IS_INRANGE | 157 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 158 .maxcontacts = 2 }, 159 { .name = MT_CLS_DUAL_NSMU_CONTACTID, 160 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 161 MT_QUIRK_SLOT_IS_CONTACTID, 162 .maxcontacts = 2 }, 163 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 164 .quirks = MT_QUIRK_VALID_IS_INRANGE | 165 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 166 167 /* 168 * vendor specific classes 169 */ 170 { .name = MT_CLS_3M, 171 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 172 MT_QUIRK_SLOT_IS_CONTACTID, 173 .sn_move = 2048, 174 .sn_width = 128, 175 .sn_height = 128 }, 176 { .name = MT_CLS_CYPRESS, 177 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 178 MT_QUIRK_CYPRESS, 179 .maxcontacts = 10 }, 180 { .name = MT_CLS_EGALAX, 181 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 182 MT_QUIRK_VALID_IS_INRANGE, 183 .sn_move = 4096, 184 .sn_pressure = 32, 185 }, 186 { .name = MT_CLS_EGALAX_SERIAL, 187 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 188 MT_QUIRK_ALWAYS_VALID, 189 .sn_move = 4096, 190 .sn_pressure = 32, 191 }, 192 193 { } 194 }; 195 196 static ssize_t mt_show_quirks(struct device *dev, 197 struct device_attribute *attr, 198 char *buf) 199 { 200 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 201 struct mt_device *td = hid_get_drvdata(hdev); 202 203 return sprintf(buf, "%u\n", td->mtclass.quirks); 204 } 205 206 static ssize_t mt_set_quirks(struct device *dev, 207 struct device_attribute *attr, 208 const char *buf, size_t count) 209 { 210 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 211 struct mt_device *td = hid_get_drvdata(hdev); 212 213 unsigned long val; 214 215 if (kstrtoul(buf, 0, &val)) 216 return -EINVAL; 217 218 td->mtclass.quirks = val; 219 220 return count; 221 } 222 223 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 224 225 static struct attribute *sysfs_attrs[] = { 226 &dev_attr_quirks.attr, 227 NULL 228 }; 229 230 static struct attribute_group mt_attribute_group = { 231 .attrs = sysfs_attrs 232 }; 233 234 static void mt_feature_mapping(struct hid_device *hdev, 235 struct hid_field *field, struct hid_usage *usage) 236 { 237 struct mt_device *td = hid_get_drvdata(hdev); 238 239 switch (usage->hid) { 240 case HID_DG_INPUTMODE: 241 td->inputmode = field->report->id; 242 break; 243 case HID_DG_CONTACTMAX: 244 td->maxcontacts = field->value[0]; 245 if (td->mtclass.maxcontacts) 246 /* check if the maxcontacts is given by the class */ 247 td->maxcontacts = td->mtclass.maxcontacts; 248 249 break; 250 } 251 } 252 253 static void set_abs(struct input_dev *input, unsigned int code, 254 struct hid_field *field, int snratio) 255 { 256 int fmin = field->logical_minimum; 257 int fmax = field->logical_maximum; 258 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 259 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 260 } 261 262 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 263 struct hid_field *field, struct hid_usage *usage, 264 unsigned long **bit, int *max) 265 { 266 struct mt_device *td = hid_get_drvdata(hdev); 267 struct mt_class *cls = &td->mtclass; 268 269 /* Only map fields from TouchScreen or TouchPad collections. 270 * We need to ignore fields that belong to other collections 271 * such as Mouse that might have the same GenericDesktop usages. */ 272 if (field->application == HID_DG_TOUCHSCREEN) 273 set_bit(INPUT_PROP_DIRECT, hi->input->propbit); 274 else if (field->application == HID_DG_TOUCHPAD) 275 set_bit(INPUT_PROP_POINTER, hi->input->propbit); 276 else 277 return 0; 278 279 /* eGalax devices provide a Digitizer.Stylus input which overrides 280 * the correct Digitizers.Finger X/Y ranges. 281 * Let's just ignore this input. */ 282 if (field->physical == HID_DG_STYLUS) 283 return -1; 284 285 switch (usage->hid & HID_USAGE_PAGE) { 286 287 case HID_UP_GENDESK: 288 switch (usage->hid) { 289 case HID_GD_X: 290 hid_map_usage(hi, usage, bit, max, 291 EV_ABS, ABS_MT_POSITION_X); 292 set_abs(hi->input, ABS_MT_POSITION_X, field, 293 cls->sn_move); 294 /* touchscreen emulation */ 295 set_abs(hi->input, ABS_X, field, cls->sn_move); 296 if (td->last_mt_collection == usage->collection_index) { 297 td->last_slot_field = usage->hid; 298 td->last_field_index = field->index; 299 } 300 return 1; 301 case HID_GD_Y: 302 hid_map_usage(hi, usage, bit, max, 303 EV_ABS, ABS_MT_POSITION_Y); 304 set_abs(hi->input, ABS_MT_POSITION_Y, field, 305 cls->sn_move); 306 /* touchscreen emulation */ 307 set_abs(hi->input, ABS_Y, field, cls->sn_move); 308 if (td->last_mt_collection == usage->collection_index) { 309 td->last_slot_field = usage->hid; 310 td->last_field_index = field->index; 311 } 312 return 1; 313 } 314 return 0; 315 316 case HID_UP_DIGITIZER: 317 switch (usage->hid) { 318 case HID_DG_INRANGE: 319 if (td->last_mt_collection == usage->collection_index) { 320 td->last_slot_field = usage->hid; 321 td->last_field_index = field->index; 322 } 323 return 1; 324 case HID_DG_CONFIDENCE: 325 if (td->last_mt_collection == usage->collection_index) { 326 td->last_slot_field = usage->hid; 327 td->last_field_index = field->index; 328 } 329 return 1; 330 case HID_DG_TIPSWITCH: 331 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 332 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 333 if (td->last_mt_collection == usage->collection_index) { 334 td->last_slot_field = usage->hid; 335 td->last_field_index = field->index; 336 } 337 return 1; 338 case HID_DG_CONTACTID: 339 if (!td->maxcontacts) 340 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 341 input_mt_init_slots(hi->input, td->maxcontacts); 342 td->last_slot_field = usage->hid; 343 td->last_field_index = field->index; 344 td->last_mt_collection = usage->collection_index; 345 return 1; 346 case HID_DG_WIDTH: 347 hid_map_usage(hi, usage, bit, max, 348 EV_ABS, ABS_MT_TOUCH_MAJOR); 349 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 350 cls->sn_width); 351 if (td->last_mt_collection == usage->collection_index) { 352 td->last_slot_field = usage->hid; 353 td->last_field_index = field->index; 354 } 355 return 1; 356 case HID_DG_HEIGHT: 357 hid_map_usage(hi, usage, bit, max, 358 EV_ABS, ABS_MT_TOUCH_MINOR); 359 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 360 cls->sn_height); 361 input_set_abs_params(hi->input, 362 ABS_MT_ORIENTATION, 0, 1, 0, 0); 363 if (td->last_mt_collection == usage->collection_index) { 364 td->last_slot_field = usage->hid; 365 td->last_field_index = field->index; 366 } 367 return 1; 368 case HID_DG_TIPPRESSURE: 369 hid_map_usage(hi, usage, bit, max, 370 EV_ABS, ABS_MT_PRESSURE); 371 set_abs(hi->input, ABS_MT_PRESSURE, field, 372 cls->sn_pressure); 373 /* touchscreen emulation */ 374 set_abs(hi->input, ABS_PRESSURE, field, 375 cls->sn_pressure); 376 if (td->last_mt_collection == usage->collection_index) { 377 td->last_slot_field = usage->hid; 378 td->last_field_index = field->index; 379 } 380 return 1; 381 case HID_DG_CONTACTCOUNT: 382 if (td->last_mt_collection == usage->collection_index) 383 td->last_field_index = field->index; 384 return 1; 385 case HID_DG_CONTACTMAX: 386 /* we don't set td->last_slot_field as contactcount and 387 * contact max are global to the report */ 388 if (td->last_mt_collection == usage->collection_index) 389 td->last_field_index = field->index; 390 return -1; 391 } 392 /* let hid-input decide for the others */ 393 return 0; 394 395 case 0xff000000: 396 /* we do not want to map these: no input-oriented meaning */ 397 return -1; 398 } 399 400 return 0; 401 } 402 403 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 404 struct hid_field *field, struct hid_usage *usage, 405 unsigned long **bit, int *max) 406 { 407 if (usage->type == EV_KEY || usage->type == EV_ABS) 408 set_bit(usage->type, hi->input->evbit); 409 410 return -1; 411 } 412 413 static int mt_compute_slot(struct mt_device *td) 414 { 415 __s32 quirks = td->mtclass.quirks; 416 417 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 418 return td->curdata.contactid; 419 420 if (quirks & MT_QUIRK_CYPRESS) 421 return cypress_compute_slot(td); 422 423 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 424 return td->num_received; 425 426 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 427 return td->curdata.contactid - 1; 428 429 return find_slot_from_contactid(td); 430 } 431 432 /* 433 * this function is called when a whole contact has been processed, 434 * so that it can assign it to a slot and store the data there 435 */ 436 static void mt_complete_slot(struct mt_device *td) 437 { 438 td->curdata.seen_in_this_frame = true; 439 if (td->curvalid) { 440 int slotnum = mt_compute_slot(td); 441 442 if (slotnum >= 0 && slotnum < td->maxcontacts) 443 td->slots[slotnum] = td->curdata; 444 } 445 td->num_received++; 446 } 447 448 449 /* 450 * this function is called when a whole packet has been received and processed, 451 * so that it can decide what to send to the input layer. 452 */ 453 static void mt_emit_event(struct mt_device *td, struct input_dev *input) 454 { 455 int i; 456 457 for (i = 0; i < td->maxcontacts; ++i) { 458 struct mt_slot *s = &(td->slots[i]); 459 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && 460 !s->seen_in_this_frame) { 461 s->touch_state = false; 462 } 463 464 input_mt_slot(input, i); 465 input_mt_report_slot_state(input, MT_TOOL_FINGER, 466 s->touch_state); 467 if (s->touch_state) { 468 /* this finger is on the screen */ 469 int wide = (s->w > s->h); 470 /* divided by two to match visual scale of touch */ 471 int major = max(s->w, s->h) >> 1; 472 int minor = min(s->w, s->h) >> 1; 473 474 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 475 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 476 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 477 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 478 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 479 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 480 } 481 s->seen_in_this_frame = false; 482 483 } 484 485 input_mt_report_pointer_emulation(input, true); 486 input_sync(input); 487 td->num_received = 0; 488 } 489 490 491 492 static int mt_event(struct hid_device *hid, struct hid_field *field, 493 struct hid_usage *usage, __s32 value) 494 { 495 struct mt_device *td = hid_get_drvdata(hid); 496 __s32 quirks = td->mtclass.quirks; 497 498 if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { 499 switch (usage->hid) { 500 case HID_DG_INRANGE: 501 if (quirks & MT_QUIRK_ALWAYS_VALID) 502 td->curvalid = true; 503 else if (quirks & MT_QUIRK_VALID_IS_INRANGE) 504 td->curvalid = value; 505 break; 506 case HID_DG_TIPSWITCH: 507 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 508 td->curvalid = value; 509 td->curdata.touch_state = value; 510 break; 511 case HID_DG_CONFIDENCE: 512 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 513 td->curvalid = value; 514 break; 515 case HID_DG_CONTACTID: 516 td->curdata.contactid = value; 517 break; 518 case HID_DG_TIPPRESSURE: 519 td->curdata.p = value; 520 break; 521 case HID_GD_X: 522 td->curdata.x = value; 523 break; 524 case HID_GD_Y: 525 td->curdata.y = value; 526 break; 527 case HID_DG_WIDTH: 528 td->curdata.w = value; 529 break; 530 case HID_DG_HEIGHT: 531 td->curdata.h = value; 532 break; 533 case HID_DG_CONTACTCOUNT: 534 /* 535 * Includes multi-packet support where subsequent 536 * packets are sent with zero contactcount. 537 */ 538 if (value) 539 td->num_expected = value; 540 break; 541 542 default: 543 /* fallback to the generic hidinput handling */ 544 return 0; 545 } 546 547 if (usage->hid == td->last_slot_field) { 548 mt_complete_slot(td); 549 } 550 551 if (field->index == td->last_field_index 552 && td->num_received >= td->num_expected) 553 mt_emit_event(td, field->hidinput->input); 554 555 } 556 557 /* we have handled the hidinput part, now remains hiddev */ 558 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 559 hid->hiddev_hid_event(hid, field, usage, value); 560 561 return 1; 562 } 563 564 static void mt_set_input_mode(struct hid_device *hdev) 565 { 566 struct mt_device *td = hid_get_drvdata(hdev); 567 struct hid_report *r; 568 struct hid_report_enum *re; 569 570 if (td->inputmode < 0) 571 return; 572 573 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 574 r = re->report_id_hash[td->inputmode]; 575 if (r) { 576 r->field[0]->value[0] = 0x02; 577 usbhid_submit_report(hdev, r, USB_DIR_OUT); 578 } 579 } 580 581 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 582 { 583 int ret, i; 584 struct mt_device *td; 585 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 586 587 for (i = 0; mt_classes[i].name ; i++) { 588 if (id->driver_data == mt_classes[i].name) { 589 mtclass = &(mt_classes[i]); 590 break; 591 } 592 } 593 594 /* This allows the driver to correctly support devices 595 * that emit events over several HID messages. 596 */ 597 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 598 599 td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); 600 if (!td) { 601 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 602 return -ENOMEM; 603 } 604 td->mtclass = *mtclass; 605 td->inputmode = -1; 606 td->last_mt_collection = -1; 607 hid_set_drvdata(hdev, td); 608 609 ret = hid_parse(hdev); 610 if (ret != 0) 611 goto fail; 612 613 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 614 if (ret) 615 goto fail; 616 617 td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), 618 GFP_KERNEL); 619 if (!td->slots) { 620 dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); 621 hid_hw_stop(hdev); 622 ret = -ENOMEM; 623 goto fail; 624 } 625 626 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 627 628 mt_set_input_mode(hdev); 629 630 return 0; 631 632 fail: 633 kfree(td); 634 return ret; 635 } 636 637 #ifdef CONFIG_PM 638 static int mt_reset_resume(struct hid_device *hdev) 639 { 640 mt_set_input_mode(hdev); 641 return 0; 642 } 643 #endif 644 645 static void mt_remove(struct hid_device *hdev) 646 { 647 struct mt_device *td = hid_get_drvdata(hdev); 648 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 649 hid_hw_stop(hdev); 650 kfree(td->slots); 651 kfree(td); 652 hid_set_drvdata(hdev, NULL); 653 } 654 655 static const struct hid_device_id mt_devices[] = { 656 657 /* 3M panels */ 658 { .driver_data = MT_CLS_3M, 659 HID_USB_DEVICE(USB_VENDOR_ID_3M, 660 USB_DEVICE_ID_3M1968) }, 661 { .driver_data = MT_CLS_3M, 662 HID_USB_DEVICE(USB_VENDOR_ID_3M, 663 USB_DEVICE_ID_3M2256) }, 664 { .driver_data = MT_CLS_3M, 665 HID_USB_DEVICE(USB_VENDOR_ID_3M, 666 USB_DEVICE_ID_3M3266) }, 667 668 /* ActionStar panels */ 669 { .driver_data = MT_CLS_DEFAULT, 670 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, 671 USB_DEVICE_ID_ACTIONSTAR_1011) }, 672 673 /* Atmel panels */ 674 { .driver_data = MT_CLS_SERIAL, 675 HID_USB_DEVICE(USB_VENDOR_ID_ATMEL, 676 USB_DEVICE_ID_ATMEL_MULTITOUCH) }, 677 678 /* Cando panels */ 679 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 680 HID_USB_DEVICE(USB_VENDOR_ID_CANDO, 681 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 682 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 683 HID_USB_DEVICE(USB_VENDOR_ID_CANDO, 684 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, 685 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 686 HID_USB_DEVICE(USB_VENDOR_ID_CANDO, 687 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, 688 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 689 HID_USB_DEVICE(USB_VENDOR_ID_CANDO, 690 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 691 692 /* Chunghwa Telecom touch panels */ 693 { .driver_data = MT_CLS_DEFAULT, 694 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 695 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 696 697 /* CVTouch panels */ 698 { .driver_data = MT_CLS_DEFAULT, 699 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 700 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 701 702 /* Cypress panel */ 703 { .driver_data = MT_CLS_CYPRESS, 704 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, 705 USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, 706 707 /* eGalax devices (resistive) */ 708 { .driver_data = MT_CLS_EGALAX, 709 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 710 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 711 { .driver_data = MT_CLS_EGALAX, 712 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 713 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 714 715 /* eGalax devices (capacitive) */ 716 { .driver_data = MT_CLS_EGALAX, 717 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 718 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 719 { .driver_data = MT_CLS_EGALAX, 720 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 721 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 722 { .driver_data = MT_CLS_EGALAX, 723 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 724 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 725 { .driver_data = MT_CLS_EGALAX, 726 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 727 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 728 { .driver_data = MT_CLS_EGALAX, 729 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 730 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 731 { .driver_data = MT_CLS_EGALAX_SERIAL, 732 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 733 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 734 735 /* Elo TouchSystems IntelliTouch Plus panel */ 736 { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, 737 HID_USB_DEVICE(USB_VENDOR_ID_ELO, 738 USB_DEVICE_ID_ELO_TS2515) }, 739 740 /* GeneralTouch panel */ 741 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 742 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 743 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 744 745 /* GoodTouch panels */ 746 { .driver_data = MT_CLS_DEFAULT, 747 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 748 USB_DEVICE_ID_GOODTOUCH_000f) }, 749 750 /* Hanvon panels */ 751 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 752 HID_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 753 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 754 755 /* Ideacom panel */ 756 { .driver_data = MT_CLS_SERIAL, 757 HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, 758 USB_DEVICE_ID_IDEACOM_IDC6650) }, 759 760 /* Ilitek dual touch panel */ 761 { .driver_data = MT_CLS_DEFAULT, 762 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, 763 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 764 765 /* IRTOUCH panels */ 766 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 767 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, 768 USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, 769 770 /* LG Display panels */ 771 { .driver_data = MT_CLS_DEFAULT, 772 HID_USB_DEVICE(USB_VENDOR_ID_LG, 773 USB_DEVICE_ID_LG_MULTITOUCH) }, 774 775 /* Lumio panels */ 776 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 777 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, 778 USB_DEVICE_ID_CRYSTALTOUCH) }, 779 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 780 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, 781 USB_DEVICE_ID_CRYSTALTOUCH_DUAL) }, 782 783 /* MosArt panels */ 784 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 785 HID_USB_DEVICE(USB_VENDOR_ID_ASUS, 786 USB_DEVICE_ID_ASUS_T91MT)}, 787 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 788 HID_USB_DEVICE(USB_VENDOR_ID_ASUS, 789 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 790 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 791 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, 792 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 793 794 /* PenMount panels */ 795 { .driver_data = MT_CLS_CONFIDENCE, 796 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, 797 USB_DEVICE_ID_PENMOUNT_PCI) }, 798 799 /* PixArt optical touch screen */ 800 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 801 HID_USB_DEVICE(USB_VENDOR_ID_PIXART, 802 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 803 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 804 HID_USB_DEVICE(USB_VENDOR_ID_PIXART, 805 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 806 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 807 HID_USB_DEVICE(USB_VENDOR_ID_PIXART, 808 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 809 810 /* PixCir-based panels */ 811 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 812 HID_USB_DEVICE(USB_VENDOR_ID_HANVON, 813 USB_DEVICE_ID_HANVON_MULTITOUCH) }, 814 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 815 HID_USB_DEVICE(USB_VENDOR_ID_CANDO, 816 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 817 818 /* Quanta-based panels */ 819 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 820 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, 821 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) }, 822 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 823 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, 824 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 825 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 826 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, 827 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) }, 828 829 /* Stantum panels */ 830 { .driver_data = MT_CLS_CONFIDENCE, 831 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, 832 USB_DEVICE_ID_MTP)}, 833 { .driver_data = MT_CLS_CONFIDENCE, 834 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 835 USB_DEVICE_ID_MTP_STM)}, 836 { .driver_data = MT_CLS_CONFIDENCE, 837 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, 838 USB_DEVICE_ID_MTP_SITRONIX)}, 839 840 /* Touch International panels */ 841 { .driver_data = MT_CLS_DEFAULT, 842 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 843 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 844 845 /* Unitec panels */ 846 { .driver_data = MT_CLS_DEFAULT, 847 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, 848 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 849 { .driver_data = MT_CLS_DEFAULT, 850 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, 851 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 852 /* XAT */ 853 { .driver_data = MT_CLS_DEFAULT, 854 HID_USB_DEVICE(USB_VENDOR_ID_XAT, 855 USB_DEVICE_ID_XAT_CSR) }, 856 857 /* Xiroku */ 858 { .driver_data = MT_CLS_DEFAULT, 859 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 860 USB_DEVICE_ID_XIROKU_SPX) }, 861 { .driver_data = MT_CLS_DEFAULT, 862 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 863 USB_DEVICE_ID_XIROKU_MPX) }, 864 { .driver_data = MT_CLS_DEFAULT, 865 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 866 USB_DEVICE_ID_XIROKU_CSR) }, 867 { .driver_data = MT_CLS_DEFAULT, 868 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 869 USB_DEVICE_ID_XIROKU_SPX1) }, 870 { .driver_data = MT_CLS_DEFAULT, 871 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 872 USB_DEVICE_ID_XIROKU_MPX1) }, 873 { .driver_data = MT_CLS_DEFAULT, 874 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 875 USB_DEVICE_ID_XIROKU_CSR1) }, 876 { .driver_data = MT_CLS_DEFAULT, 877 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 878 USB_DEVICE_ID_XIROKU_SPX2) }, 879 { .driver_data = MT_CLS_DEFAULT, 880 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 881 USB_DEVICE_ID_XIROKU_MPX2) }, 882 { .driver_data = MT_CLS_DEFAULT, 883 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, 884 USB_DEVICE_ID_XIROKU_CSR2) }, 885 886 { } 887 }; 888 MODULE_DEVICE_TABLE(hid, mt_devices); 889 890 static const struct hid_usage_id mt_grabbed_usages[] = { 891 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 892 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 893 }; 894 895 static struct hid_driver mt_driver = { 896 .name = "hid-multitouch", 897 .id_table = mt_devices, 898 .probe = mt_probe, 899 .remove = mt_remove, 900 .input_mapping = mt_input_mapping, 901 .input_mapped = mt_input_mapped, 902 .feature_mapping = mt_feature_mapping, 903 .usage_table = mt_grabbed_usages, 904 .event = mt_event, 905 #ifdef CONFIG_PM 906 .reset_resume = mt_reset_resume, 907 #endif 908 }; 909 910 static int __init mt_init(void) 911 { 912 return hid_register_driver(&mt_driver); 913 } 914 915 static void __exit mt_exit(void) 916 { 917 hid_unregister_driver(&mt_driver); 918 } 919 920 module_init(mt_init); 921 module_exit(mt_exit); 922