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 #define MT_QUIRK_FIX_CONST_CONTACT_ID (1 << 14) 72 73 #define MT_INPUTMODE_TOUCHSCREEN 0x02 74 #define MT_INPUTMODE_TOUCHPAD 0x03 75 76 #define MT_BUTTONTYPE_CLICKPAD 0 77 78 struct mt_slot { 79 __s32 x, y, cx, cy, p, w, h; 80 __s32 contactid; /* the device ContactID assigned to this slot */ 81 bool touch_state; /* is the touch valid? */ 82 bool inrange_state; /* is the finger in proximity of the sensor? */ 83 bool confidence_state; /* is the touch made by a finger? */ 84 }; 85 86 struct mt_class { 87 __s32 name; /* MT_CLS */ 88 __s32 quirks; 89 __s32 sn_move; /* Signal/noise ratio for move events */ 90 __s32 sn_width; /* Signal/noise ratio for width events */ 91 __s32 sn_height; /* Signal/noise ratio for height events */ 92 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 93 __u8 maxcontacts; 94 bool is_indirect; /* true for touchpads */ 95 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 96 }; 97 98 struct mt_fields { 99 unsigned usages[HID_MAX_FIELDS]; 100 unsigned int length; 101 }; 102 103 struct mt_device { 104 struct mt_slot curdata; /* placeholder of incoming data */ 105 struct mt_class mtclass; /* our mt device class */ 106 struct mt_fields *fields; /* temporary placeholder for storing the 107 multitouch fields */ 108 int cc_index; /* contact count field index in the report */ 109 int cc_value_index; /* contact count value index in the field */ 110 unsigned last_slot_field; /* the last field of a slot */ 111 unsigned mt_report_id; /* the report ID of the multitouch device */ 112 unsigned long initial_quirks; /* initial quirks state */ 113 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 114 __s16 inputmode_index; /* InputMode HID feature index in the report */ 115 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 116 -1 if non-existent */ 117 __u8 inputmode_value; /* InputMode HID feature value */ 118 __u8 num_received; /* how many contacts we received */ 119 __u8 num_expected; /* expected last contact index */ 120 __u8 maxcontacts; 121 __u8 touches_by_report; /* how many touches are present in one report: 122 * 1 means we should use a serial protocol 123 * > 1 means hybrid (multitouch) protocol */ 124 __u8 buttons_count; /* number of physical buttons per touchpad */ 125 bool is_buttonpad; /* is this device a button pad? */ 126 bool serial_maybe; /* need to check for serial protocol */ 127 bool curvalid; /* is the current contact valid? */ 128 unsigned mt_flags; /* flags to pass to input-mt */ 129 }; 130 131 static void mt_post_parse_default_settings(struct mt_device *td); 132 static void mt_post_parse(struct mt_device *td); 133 134 /* classes of device behavior */ 135 #define MT_CLS_DEFAULT 0x0001 136 137 #define MT_CLS_SERIAL 0x0002 138 #define MT_CLS_CONFIDENCE 0x0003 139 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 140 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 141 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 142 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 143 /* reserved 0x0008 */ 144 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 145 #define MT_CLS_NSMU 0x000a 146 /* reserved 0x0010 */ 147 /* reserved 0x0011 */ 148 #define MT_CLS_WIN_8 0x0012 149 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 150 151 /* vendor specific classes */ 152 #define MT_CLS_3M 0x0101 153 /* reserved 0x0102 */ 154 #define MT_CLS_EGALAX 0x0103 155 #define MT_CLS_EGALAX_SERIAL 0x0104 156 #define MT_CLS_TOPSEED 0x0105 157 #define MT_CLS_PANASONIC 0x0106 158 #define MT_CLS_FLATFROG 0x0107 159 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 160 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 161 #define MT_CLS_LG 0x010a 162 #define MT_CLS_VTL 0x0110 163 164 #define MT_DEFAULT_MAXCONTACT 10 165 #define MT_MAX_MAXCONTACT 250 166 167 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 168 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 169 170 /* 171 * these device-dependent functions determine what slot corresponds 172 * to a valid contact that was just read. 173 */ 174 175 static int cypress_compute_slot(struct mt_device *td) 176 { 177 if (td->curdata.contactid != 0 || td->num_received == 0) 178 return td->curdata.contactid; 179 else 180 return -1; 181 } 182 183 static struct mt_class mt_classes[] = { 184 { .name = MT_CLS_DEFAULT, 185 .quirks = MT_QUIRK_ALWAYS_VALID | 186 MT_QUIRK_CONTACT_CNT_ACCURATE }, 187 { .name = MT_CLS_NSMU, 188 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 189 { .name = MT_CLS_SERIAL, 190 .quirks = MT_QUIRK_ALWAYS_VALID}, 191 { .name = MT_CLS_CONFIDENCE, 192 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 193 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 194 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 195 MT_QUIRK_SLOT_IS_CONTACTID }, 196 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 197 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 198 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 199 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 200 .quirks = MT_QUIRK_VALID_IS_INRANGE | 201 MT_QUIRK_SLOT_IS_CONTACTID, 202 .maxcontacts = 2 }, 203 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 204 .quirks = MT_QUIRK_VALID_IS_INRANGE | 205 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 206 .maxcontacts = 2 }, 207 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 208 .quirks = MT_QUIRK_VALID_IS_INRANGE | 209 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 210 { .name = MT_CLS_WIN_8, 211 .quirks = MT_QUIRK_ALWAYS_VALID | 212 MT_QUIRK_IGNORE_DUPLICATES | 213 MT_QUIRK_HOVERING | 214 MT_QUIRK_CONTACT_CNT_ACCURATE }, 215 { .name = MT_CLS_EXPORT_ALL_INPUTS, 216 .quirks = MT_QUIRK_ALWAYS_VALID | 217 MT_QUIRK_CONTACT_CNT_ACCURATE, 218 .export_all_inputs = true }, 219 220 /* 221 * vendor specific classes 222 */ 223 { .name = MT_CLS_3M, 224 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 225 MT_QUIRK_SLOT_IS_CONTACTID, 226 .sn_move = 2048, 227 .sn_width = 128, 228 .sn_height = 128, 229 .maxcontacts = 60, 230 }, 231 { .name = MT_CLS_EGALAX, 232 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 233 MT_QUIRK_VALID_IS_INRANGE, 234 .sn_move = 4096, 235 .sn_pressure = 32, 236 }, 237 { .name = MT_CLS_EGALAX_SERIAL, 238 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 239 MT_QUIRK_ALWAYS_VALID, 240 .sn_move = 4096, 241 .sn_pressure = 32, 242 }, 243 { .name = MT_CLS_TOPSEED, 244 .quirks = MT_QUIRK_ALWAYS_VALID, 245 .is_indirect = true, 246 .maxcontacts = 2, 247 }, 248 { .name = MT_CLS_PANASONIC, 249 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 250 .maxcontacts = 4 }, 251 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 252 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 253 MT_QUIRK_VALID_IS_INRANGE | 254 MT_QUIRK_SLOT_IS_CONTACTID, 255 .maxcontacts = 2 256 }, 257 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 258 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 259 MT_QUIRK_SLOT_IS_CONTACTID 260 }, 261 262 { .name = MT_CLS_FLATFROG, 263 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 264 MT_QUIRK_NO_AREA, 265 .sn_move = 2048, 266 .maxcontacts = 40, 267 }, 268 { .name = MT_CLS_LG, 269 .quirks = MT_QUIRK_ALWAYS_VALID | 270 MT_QUIRK_FIX_CONST_CONTACT_ID | 271 MT_QUIRK_IGNORE_DUPLICATES | 272 MT_QUIRK_HOVERING | 273 MT_QUIRK_CONTACT_CNT_ACCURATE }, 274 { .name = MT_CLS_VTL, 275 .quirks = MT_QUIRK_ALWAYS_VALID | 276 MT_QUIRK_CONTACT_CNT_ACCURATE | 277 MT_QUIRK_FORCE_GET_FEATURE, 278 }, 279 { } 280 }; 281 282 static ssize_t mt_show_quirks(struct device *dev, 283 struct device_attribute *attr, 284 char *buf) 285 { 286 struct hid_device *hdev = to_hid_device(dev); 287 struct mt_device *td = hid_get_drvdata(hdev); 288 289 return sprintf(buf, "%u\n", td->mtclass.quirks); 290 } 291 292 static ssize_t mt_set_quirks(struct device *dev, 293 struct device_attribute *attr, 294 const char *buf, size_t count) 295 { 296 struct hid_device *hdev = to_hid_device(dev); 297 struct mt_device *td = hid_get_drvdata(hdev); 298 299 unsigned long val; 300 301 if (kstrtoul(buf, 0, &val)) 302 return -EINVAL; 303 304 td->mtclass.quirks = val; 305 306 if (td->cc_index < 0) 307 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 308 309 return count; 310 } 311 312 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 313 314 static struct attribute *sysfs_attrs[] = { 315 &dev_attr_quirks.attr, 316 NULL 317 }; 318 319 static struct attribute_group mt_attribute_group = { 320 .attrs = sysfs_attrs 321 }; 322 323 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 324 { 325 struct mt_device *td = hid_get_drvdata(hdev); 326 int ret, size = hid_report_len(report); 327 u8 *buf; 328 329 /* 330 * Do not fetch the feature report if the device has been explicitly 331 * marked as non-capable. 332 */ 333 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS) 334 return; 335 336 buf = hid_alloc_report_buf(report, GFP_KERNEL); 337 if (!buf) 338 return; 339 340 ret = hid_hw_raw_request(hdev, report->id, buf, size, 341 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 342 if (ret < 0) { 343 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 344 report->id); 345 } else { 346 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 347 size, 0); 348 if (ret) 349 dev_warn(&hdev->dev, "failed to report feature\n"); 350 } 351 352 kfree(buf); 353 } 354 355 static void mt_feature_mapping(struct hid_device *hdev, 356 struct hid_field *field, struct hid_usage *usage) 357 { 358 struct mt_device *td = hid_get_drvdata(hdev); 359 360 switch (usage->hid) { 361 case HID_DG_INPUTMODE: 362 /* Ignore if value index is out of bounds. */ 363 if (usage->usage_index >= field->report_count) { 364 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); 365 break; 366 } 367 368 if (td->inputmode < 0) { 369 td->inputmode = field->report->id; 370 td->inputmode_index = usage->usage_index; 371 } else { 372 /* 373 * Some elan panels wrongly declare 2 input mode 374 * features, and silently ignore when we set the 375 * value in the second field. Skip the second feature 376 * and hope for the best. 377 */ 378 dev_info(&hdev->dev, 379 "Ignoring the extra HID_DG_INPUTMODE\n"); 380 } 381 382 break; 383 case HID_DG_CONTACTMAX: 384 mt_get_feature(hdev, field->report); 385 386 td->maxcontact_report_id = field->report->id; 387 td->maxcontacts = field->value[0]; 388 if (!td->maxcontacts && 389 field->logical_maximum <= MT_MAX_MAXCONTACT) 390 td->maxcontacts = field->logical_maximum; 391 if (td->mtclass.maxcontacts) 392 /* check if the maxcontacts is given by the class */ 393 td->maxcontacts = td->mtclass.maxcontacts; 394 395 break; 396 case HID_DG_BUTTONTYPE: 397 if (usage->usage_index >= field->report_count) { 398 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 399 break; 400 } 401 402 mt_get_feature(hdev, field->report); 403 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 404 td->is_buttonpad = true; 405 406 break; 407 case 0xff0000c5: 408 /* Retrieve the Win8 blob once to enable some devices */ 409 if (usage->usage_index == 0) 410 mt_get_feature(hdev, field->report); 411 break; 412 } 413 } 414 415 static void set_abs(struct input_dev *input, unsigned int code, 416 struct hid_field *field, int snratio) 417 { 418 int fmin = field->logical_minimum; 419 int fmax = field->logical_maximum; 420 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 421 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 422 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 423 } 424 425 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 426 struct hid_input *hi) 427 { 428 struct mt_fields *f = td->fields; 429 430 if (f->length >= HID_MAX_FIELDS) 431 return; 432 433 f->usages[f->length++] = usage->hid; 434 } 435 436 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 437 struct hid_field *field, struct hid_usage *usage, 438 unsigned long **bit, int *max) 439 { 440 struct mt_device *td = hid_get_drvdata(hdev); 441 struct mt_class *cls = &td->mtclass; 442 int code; 443 struct hid_usage *prev_usage = NULL; 444 445 if (field->application == HID_DG_TOUCHSCREEN) 446 td->mt_flags |= INPUT_MT_DIRECT; 447 448 /* 449 * Model touchscreens providing buttons as touchpads. 450 */ 451 if (field->application == HID_DG_TOUCHPAD || 452 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 453 td->mt_flags |= INPUT_MT_POINTER; 454 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 455 } 456 457 /* count the buttons on touchpads */ 458 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 459 td->buttons_count++; 460 461 if (usage->usage_index) 462 prev_usage = &field->usage[usage->usage_index - 1]; 463 464 switch (usage->hid & HID_USAGE_PAGE) { 465 466 case HID_UP_GENDESK: 467 switch (usage->hid) { 468 case HID_GD_X: 469 if (prev_usage && (prev_usage->hid == usage->hid)) { 470 hid_map_usage(hi, usage, bit, max, 471 EV_ABS, ABS_MT_TOOL_X); 472 set_abs(hi->input, ABS_MT_TOOL_X, field, 473 cls->sn_move); 474 } else { 475 hid_map_usage(hi, usage, bit, max, 476 EV_ABS, ABS_MT_POSITION_X); 477 set_abs(hi->input, ABS_MT_POSITION_X, field, 478 cls->sn_move); 479 } 480 481 mt_store_field(usage, td, hi); 482 return 1; 483 case HID_GD_Y: 484 if (prev_usage && (prev_usage->hid == usage->hid)) { 485 hid_map_usage(hi, usage, bit, max, 486 EV_ABS, ABS_MT_TOOL_Y); 487 set_abs(hi->input, ABS_MT_TOOL_Y, field, 488 cls->sn_move); 489 } else { 490 hid_map_usage(hi, usage, bit, max, 491 EV_ABS, ABS_MT_POSITION_Y); 492 set_abs(hi->input, ABS_MT_POSITION_Y, field, 493 cls->sn_move); 494 } 495 496 mt_store_field(usage, td, hi); 497 return 1; 498 } 499 return 0; 500 501 case HID_UP_DIGITIZER: 502 switch (usage->hid) { 503 case HID_DG_INRANGE: 504 if (cls->quirks & MT_QUIRK_HOVERING) { 505 hid_map_usage(hi, usage, bit, max, 506 EV_ABS, ABS_MT_DISTANCE); 507 input_set_abs_params(hi->input, 508 ABS_MT_DISTANCE, 0, 1, 0, 0); 509 } 510 mt_store_field(usage, td, hi); 511 return 1; 512 case HID_DG_CONFIDENCE: 513 if (cls->name == MT_CLS_WIN_8 && 514 field->application == HID_DG_TOUCHPAD) 515 cls->quirks |= MT_QUIRK_CONFIDENCE; 516 mt_store_field(usage, td, hi); 517 return 1; 518 case HID_DG_TIPSWITCH: 519 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 520 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 521 mt_store_field(usage, td, hi); 522 return 1; 523 case HID_DG_CONTACTID: 524 mt_store_field(usage, td, hi); 525 td->touches_by_report++; 526 td->mt_report_id = field->report->id; 527 return 1; 528 case HID_DG_WIDTH: 529 hid_map_usage(hi, usage, bit, max, 530 EV_ABS, ABS_MT_TOUCH_MAJOR); 531 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 532 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 533 cls->sn_width); 534 mt_store_field(usage, td, hi); 535 return 1; 536 case HID_DG_HEIGHT: 537 hid_map_usage(hi, usage, bit, max, 538 EV_ABS, ABS_MT_TOUCH_MINOR); 539 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 540 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 541 cls->sn_height); 542 input_set_abs_params(hi->input, 543 ABS_MT_ORIENTATION, 0, 1, 0, 0); 544 } 545 mt_store_field(usage, td, hi); 546 return 1; 547 case HID_DG_TIPPRESSURE: 548 hid_map_usage(hi, usage, bit, max, 549 EV_ABS, ABS_MT_PRESSURE); 550 set_abs(hi->input, ABS_MT_PRESSURE, field, 551 cls->sn_pressure); 552 mt_store_field(usage, td, hi); 553 return 1; 554 case HID_DG_CONTACTCOUNT: 555 /* Ignore if indexes are out of bounds. */ 556 if (field->index >= field->report->maxfield || 557 usage->usage_index >= field->report_count) 558 return 1; 559 td->cc_index = field->index; 560 td->cc_value_index = usage->usage_index; 561 return 1; 562 case HID_DG_CONTACTMAX: 563 /* we don't set td->last_slot_field as contactcount and 564 * contact max are global to the report */ 565 return -1; 566 case HID_DG_TOUCH: 567 /* Legacy devices use TIPSWITCH and not TOUCH. 568 * Let's just ignore this field. */ 569 return -1; 570 } 571 /* let hid-input decide for the others */ 572 return 0; 573 574 case HID_UP_BUTTON: 575 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 576 /* 577 * MS PTP spec says that external buttons left and right have 578 * usages 2 and 3. 579 */ 580 if (cls->name == MT_CLS_WIN_8 && 581 field->application == HID_DG_TOUCHPAD && 582 (usage->hid & HID_USAGE) > 1) 583 code--; 584 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 585 input_set_capability(hi->input, EV_KEY, code); 586 return 1; 587 588 case 0xff000000: 589 /* we do not want to map these: no input-oriented meaning */ 590 return -1; 591 } 592 593 return 0; 594 } 595 596 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi, 597 struct hid_field *field, struct hid_usage *usage, 598 unsigned long **bit, int *max) 599 { 600 if (usage->type == EV_KEY || usage->type == EV_ABS) 601 set_bit(usage->type, hi->input->evbit); 602 603 return -1; 604 } 605 606 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 607 { 608 __s32 quirks = td->mtclass.quirks; 609 610 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 611 return td->curdata.contactid; 612 613 if (quirks & MT_QUIRK_CYPRESS) 614 return cypress_compute_slot(td); 615 616 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 617 return td->num_received; 618 619 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 620 return td->curdata.contactid - 1; 621 622 return input_mt_get_slot_by_key(input, td->curdata.contactid); 623 } 624 625 /* 626 * this function is called when a whole contact has been processed, 627 * so that it can assign it to a slot and store the data there 628 */ 629 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 630 { 631 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 632 td->num_received >= td->num_expected) 633 return; 634 635 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 636 int active; 637 int slotnum = mt_compute_slot(td, input); 638 struct mt_slot *s = &td->curdata; 639 struct input_mt *mt = input->mt; 640 641 if (slotnum < 0 || slotnum >= td->maxcontacts) 642 return; 643 644 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 645 struct input_mt_slot *slot = &mt->slots[slotnum]; 646 if (input_mt_is_active(slot) && 647 input_mt_is_used(mt, slot)) 648 return; 649 } 650 651 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 652 s->confidence_state = 1; 653 active = (s->touch_state || s->inrange_state) && 654 s->confidence_state; 655 656 input_mt_slot(input, slotnum); 657 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 658 if (active) { 659 /* this finger is in proximity of the sensor */ 660 int wide = (s->w > s->h); 661 /* divided by two to match visual scale of touch */ 662 int major = max(s->w, s->h) >> 1; 663 int minor = min(s->w, s->h) >> 1; 664 665 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 666 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 667 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 668 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 669 input_event(input, EV_ABS, ABS_MT_DISTANCE, 670 !s->touch_state); 671 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 672 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 673 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 674 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 675 } 676 } 677 678 td->num_received++; 679 } 680 681 /* 682 * this function is called when a whole packet has been received and processed, 683 * so that it can decide what to send to the input layer. 684 */ 685 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 686 { 687 input_mt_sync_frame(input); 688 input_sync(input); 689 td->num_received = 0; 690 } 691 692 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 693 struct hid_usage *usage, __s32 value) 694 { 695 /* we will handle the hidinput part later, now remains hiddev */ 696 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 697 hid->hiddev_hid_event(hid, field, usage, value); 698 699 return 1; 700 } 701 702 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 703 struct hid_usage *usage, __s32 value) 704 { 705 struct mt_device *td = hid_get_drvdata(hid); 706 __s32 quirks = td->mtclass.quirks; 707 struct input_dev *input = field->hidinput->input; 708 709 if (hid->claimed & HID_CLAIMED_INPUT) { 710 switch (usage->hid) { 711 case HID_DG_INRANGE: 712 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 713 td->curvalid = value; 714 if (quirks & MT_QUIRK_HOVERING) 715 td->curdata.inrange_state = value; 716 break; 717 case HID_DG_TIPSWITCH: 718 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 719 td->curvalid = value; 720 td->curdata.touch_state = value; 721 break; 722 case HID_DG_CONFIDENCE: 723 if (quirks & MT_QUIRK_CONFIDENCE) 724 td->curdata.confidence_state = value; 725 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 726 td->curvalid = value; 727 break; 728 case HID_DG_CONTACTID: 729 td->curdata.contactid = value; 730 break; 731 case HID_DG_TIPPRESSURE: 732 td->curdata.p = value; 733 break; 734 case HID_GD_X: 735 if (usage->code == ABS_MT_TOOL_X) 736 td->curdata.cx = value; 737 else 738 td->curdata.x = value; 739 break; 740 case HID_GD_Y: 741 if (usage->code == ABS_MT_TOOL_Y) 742 td->curdata.cy = value; 743 else 744 td->curdata.y = value; 745 break; 746 case HID_DG_WIDTH: 747 td->curdata.w = value; 748 break; 749 case HID_DG_HEIGHT: 750 td->curdata.h = value; 751 break; 752 case HID_DG_CONTACTCOUNT: 753 break; 754 case HID_DG_TOUCH: 755 /* do nothing */ 756 break; 757 758 default: 759 if (usage->type) 760 input_event(input, usage->type, usage->code, 761 value); 762 return; 763 } 764 765 if (usage->usage_index + 1 == field->report_count) { 766 /* we only take into account the last report. */ 767 if (usage->hid == td->last_slot_field) 768 mt_complete_slot(td, field->hidinput->input); 769 } 770 771 } 772 } 773 774 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 775 { 776 struct mt_device *td = hid_get_drvdata(hid); 777 struct hid_field *field; 778 unsigned count; 779 int r, n; 780 781 /* 782 * Includes multi-packet support where subsequent 783 * packets are sent with zero contactcount. 784 */ 785 if (td->cc_index >= 0) { 786 struct hid_field *field = report->field[td->cc_index]; 787 int value = field->value[td->cc_value_index]; 788 if (value) 789 td->num_expected = value; 790 } 791 792 for (r = 0; r < report->maxfield; r++) { 793 field = report->field[r]; 794 count = field->report_count; 795 796 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 797 continue; 798 799 for (n = 0; n < count; n++) 800 mt_process_mt_event(hid, field, &field->usage[n], 801 field->value[n]); 802 } 803 804 if (td->num_received >= td->num_expected) 805 mt_sync_frame(td, report->field[0]->hidinput->input); 806 } 807 808 static int mt_touch_input_configured(struct hid_device *hdev, 809 struct hid_input *hi) 810 { 811 struct mt_device *td = hid_get_drvdata(hdev); 812 struct mt_class *cls = &td->mtclass; 813 struct input_dev *input = hi->input; 814 int ret; 815 816 if (!td->maxcontacts) 817 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 818 819 mt_post_parse(td); 820 if (td->serial_maybe) 821 mt_post_parse_default_settings(td); 822 823 if (cls->is_indirect) 824 td->mt_flags |= INPUT_MT_POINTER; 825 826 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 827 td->mt_flags |= INPUT_MT_DROP_UNUSED; 828 829 /* check for clickpads */ 830 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 831 td->is_buttonpad = true; 832 833 if (td->is_buttonpad) 834 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 835 836 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 837 if (ret) 838 return ret; 839 840 td->mt_flags = 0; 841 return 0; 842 } 843 844 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 845 struct hid_field *field, struct hid_usage *usage, 846 unsigned long **bit, int *max) 847 { 848 struct mt_device *td = hid_get_drvdata(hdev); 849 850 /* 851 * If mtclass.export_all_inputs is not set, only map fields from 852 * TouchScreen or TouchPad collections. We need to ignore fields 853 * that belong to other collections such as Mouse that might have 854 * the same GenericDesktop usages. 855 */ 856 if (!td->mtclass.export_all_inputs && 857 field->application != HID_DG_TOUCHSCREEN && 858 field->application != HID_DG_PEN && 859 field->application != HID_DG_TOUCHPAD && 860 field->application != HID_GD_KEYBOARD && 861 field->application != HID_CP_CONSUMER_CONTROL) 862 return -1; 863 864 /* 865 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 866 * for the stylus. 867 * The check for mt_report_id ensures we don't process 868 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 869 * collection, but within the report ID. 870 */ 871 if (field->physical == HID_DG_STYLUS) 872 return 0; 873 else if ((field->physical == 0) && 874 (field->report->id != td->mt_report_id) && 875 (td->mt_report_id != -1)) 876 return 0; 877 878 if (field->application == HID_DG_TOUCHSCREEN || 879 field->application == HID_DG_TOUCHPAD) 880 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 881 882 /* let hid-core decide for the others */ 883 return 0; 884 } 885 886 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 887 struct hid_field *field, struct hid_usage *usage, 888 unsigned long **bit, int *max) 889 { 890 /* 891 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 892 * for the stylus. 893 */ 894 if (field->physical == HID_DG_STYLUS) 895 return 0; 896 897 if (field->application == HID_DG_TOUCHSCREEN || 898 field->application == HID_DG_TOUCHPAD) 899 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max); 900 901 /* let hid-core decide for the others */ 902 return 0; 903 } 904 905 static int mt_event(struct hid_device *hid, struct hid_field *field, 906 struct hid_usage *usage, __s32 value) 907 { 908 struct mt_device *td = hid_get_drvdata(hid); 909 910 if (field->report->id == td->mt_report_id) 911 return mt_touch_event(hid, field, usage, value); 912 913 return 0; 914 } 915 916 static void mt_report(struct hid_device *hid, struct hid_report *report) 917 { 918 struct mt_device *td = hid_get_drvdata(hid); 919 struct hid_field *field = report->field[0]; 920 921 if (!(hid->claimed & HID_CLAIMED_INPUT)) 922 return; 923 924 if (report->id == td->mt_report_id) 925 return mt_touch_report(hid, report); 926 927 if (field && field->hidinput && field->hidinput->input) 928 input_sync(field->hidinput->input); 929 } 930 931 static void mt_set_input_mode(struct hid_device *hdev) 932 { 933 struct mt_device *td = hid_get_drvdata(hdev); 934 struct hid_report *r; 935 struct hid_report_enum *re; 936 struct mt_class *cls = &td->mtclass; 937 char *buf; 938 int report_len; 939 940 if (td->inputmode < 0) 941 return; 942 943 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 944 r = re->report_id_hash[td->inputmode]; 945 if (r) { 946 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 947 report_len = hid_report_len(r); 948 buf = hid_alloc_report_buf(r, GFP_KERNEL); 949 if (!buf) { 950 hid_err(hdev, "failed to allocate buffer for report\n"); 951 return; 952 } 953 hid_hw_raw_request(hdev, r->id, buf, report_len, 954 HID_FEATURE_REPORT, 955 HID_REQ_GET_REPORT); 956 kfree(buf); 957 } 958 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 959 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 960 } 961 } 962 963 static void mt_set_maxcontacts(struct hid_device *hdev) 964 { 965 struct mt_device *td = hid_get_drvdata(hdev); 966 struct hid_report *r; 967 struct hid_report_enum *re; 968 int fieldmax, max; 969 970 if (td->maxcontact_report_id < 0) 971 return; 972 973 if (!td->mtclass.maxcontacts) 974 return; 975 976 re = &hdev->report_enum[HID_FEATURE_REPORT]; 977 r = re->report_id_hash[td->maxcontact_report_id]; 978 if (r) { 979 max = td->mtclass.maxcontacts; 980 fieldmax = r->field[0]->logical_maximum; 981 max = min(fieldmax, max); 982 if (r->field[0]->value[0] != max) { 983 r->field[0]->value[0] = max; 984 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 985 } 986 } 987 } 988 989 static void mt_post_parse_default_settings(struct mt_device *td) 990 { 991 __s32 quirks = td->mtclass.quirks; 992 993 /* unknown serial device needs special quirks */ 994 if (td->touches_by_report == 1) { 995 quirks |= MT_QUIRK_ALWAYS_VALID; 996 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 997 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 998 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 999 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1000 } 1001 1002 td->mtclass.quirks = quirks; 1003 } 1004 1005 static void mt_post_parse(struct mt_device *td) 1006 { 1007 struct mt_fields *f = td->fields; 1008 struct mt_class *cls = &td->mtclass; 1009 1010 if (td->touches_by_report > 0) { 1011 int field_count_per_touch = f->length / td->touches_by_report; 1012 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1013 } 1014 1015 if (td->cc_index < 0) 1016 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1017 } 1018 1019 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1020 { 1021 struct mt_device *td = hid_get_drvdata(hdev); 1022 char *name; 1023 const char *suffix = NULL; 1024 struct hid_field *field = hi->report->field[0]; 1025 int ret; 1026 1027 if (hi->report->id == td->mt_report_id) { 1028 ret = mt_touch_input_configured(hdev, hi); 1029 if (ret) 1030 return ret; 1031 } 1032 1033 /* 1034 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1035 * for the stylus. Check this first, and then rely on the application 1036 * field. 1037 */ 1038 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1039 suffix = "Pen"; 1040 /* force BTN_STYLUS to allow tablet matching in udev */ 1041 __set_bit(BTN_STYLUS, hi->input->keybit); 1042 } else { 1043 switch (field->application) { 1044 case HID_GD_KEYBOARD: 1045 suffix = "Keyboard"; 1046 break; 1047 case HID_GD_KEYPAD: 1048 suffix = "Keypad"; 1049 break; 1050 case HID_GD_MOUSE: 1051 suffix = "Mouse"; 1052 break; 1053 case HID_DG_STYLUS: 1054 suffix = "Pen"; 1055 /* force BTN_STYLUS to allow tablet matching in udev */ 1056 __set_bit(BTN_STYLUS, hi->input->keybit); 1057 break; 1058 case HID_DG_TOUCHSCREEN: 1059 /* we do not set suffix = "Touchscreen" */ 1060 break; 1061 case HID_DG_TOUCHPAD: 1062 suffix = "Touchpad"; 1063 break; 1064 case HID_GD_SYSTEM_CONTROL: 1065 suffix = "System Control"; 1066 break; 1067 case HID_CP_CONSUMER_CONTROL: 1068 suffix = "Consumer Control"; 1069 break; 1070 default: 1071 suffix = "UNKNOWN"; 1072 break; 1073 } 1074 } 1075 1076 if (suffix) { 1077 name = devm_kzalloc(&hi->input->dev, 1078 strlen(hdev->name) + strlen(suffix) + 2, 1079 GFP_KERNEL); 1080 if (name) { 1081 sprintf(name, "%s %s", hdev->name, suffix); 1082 hi->input->name = name; 1083 } 1084 } 1085 1086 return 0; 1087 } 1088 1089 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1090 { 1091 if (field->usage[0].hid != usage || 1092 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1093 return; 1094 1095 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1096 field->flags |= HID_MAIN_ITEM_VARIABLE; 1097 } 1098 1099 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1100 { 1101 struct hid_report *report; 1102 int i; 1103 1104 list_for_each_entry(report, 1105 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1106 list) { 1107 1108 if (!report->maxfield) 1109 continue; 1110 1111 for (i = 0; i < report->maxfield; i++) 1112 if (report->field[i]->maxusage >= 1) 1113 mt_fix_const_field(report->field[i], usage); 1114 } 1115 } 1116 1117 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1118 { 1119 int ret, i; 1120 struct mt_device *td; 1121 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1122 1123 for (i = 0; mt_classes[i].name ; i++) { 1124 if (id->driver_data == mt_classes[i].name) { 1125 mtclass = &(mt_classes[i]); 1126 break; 1127 } 1128 } 1129 1130 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1131 if (!td) { 1132 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1133 return -ENOMEM; 1134 } 1135 td->mtclass = *mtclass; 1136 td->inputmode = -1; 1137 td->maxcontact_report_id = -1; 1138 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1139 td->cc_index = -1; 1140 td->mt_report_id = -1; 1141 hid_set_drvdata(hdev, td); 1142 1143 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1144 GFP_KERNEL); 1145 if (!td->fields) { 1146 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1147 return -ENOMEM; 1148 } 1149 1150 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1151 td->serial_maybe = true; 1152 1153 /* 1154 * Store the initial quirk state 1155 */ 1156 td->initial_quirks = hdev->quirks; 1157 1158 /* This allows the driver to correctly support devices 1159 * that emit events over several HID messages. 1160 */ 1161 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1162 1163 /* 1164 * This allows the driver to handle different input sensors 1165 * that emits events through different reports on the same HID 1166 * device. 1167 */ 1168 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1169 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1170 1171 /* 1172 * Some multitouch screens do not like to be polled for input 1173 * reports. Fortunately, the Win8 spec says that all touches 1174 * should be sent during each report, making the initialization 1175 * of input reports unnecessary. For Win7 devices, well, let's hope 1176 * they will still be happy (this is only be a problem if a touch 1177 * was already there while probing the device). 1178 * 1179 * In addition some touchpads do not behave well if we read 1180 * all feature reports from them. Instead we prevent 1181 * initial report fetching and then selectively fetch each 1182 * report we are interested in. 1183 */ 1184 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1185 1186 ret = hid_parse(hdev); 1187 if (ret != 0) 1188 return ret; 1189 1190 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1191 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1192 1193 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1194 if (ret) 1195 return ret; 1196 1197 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1198 if (ret) 1199 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1200 hdev->name); 1201 1202 mt_set_maxcontacts(hdev); 1203 mt_set_input_mode(hdev); 1204 1205 /* release .fields memory as it is not used anymore */ 1206 devm_kfree(&hdev->dev, td->fields); 1207 td->fields = NULL; 1208 1209 return 0; 1210 } 1211 1212 #ifdef CONFIG_PM 1213 static void mt_release_contacts(struct hid_device *hid) 1214 { 1215 struct hid_input *hidinput; 1216 1217 list_for_each_entry(hidinput, &hid->inputs, list) { 1218 struct input_dev *input_dev = hidinput->input; 1219 struct input_mt *mt = input_dev->mt; 1220 int i; 1221 1222 if (mt) { 1223 for (i = 0; i < mt->num_slots; i++) { 1224 input_mt_slot(input_dev, i); 1225 input_mt_report_slot_state(input_dev, 1226 MT_TOOL_FINGER, 1227 false); 1228 } 1229 input_mt_sync_frame(input_dev); 1230 input_sync(input_dev); 1231 } 1232 } 1233 } 1234 1235 static int mt_reset_resume(struct hid_device *hdev) 1236 { 1237 mt_release_contacts(hdev); 1238 mt_set_maxcontacts(hdev); 1239 mt_set_input_mode(hdev); 1240 return 0; 1241 } 1242 1243 static int mt_resume(struct hid_device *hdev) 1244 { 1245 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1246 * It should be safe to send it to other devices too. 1247 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1248 1249 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1250 1251 return 0; 1252 } 1253 #endif 1254 1255 static void mt_remove(struct hid_device *hdev) 1256 { 1257 struct mt_device *td = hid_get_drvdata(hdev); 1258 1259 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1260 hid_hw_stop(hdev); 1261 hdev->quirks = td->initial_quirks; 1262 } 1263 1264 /* 1265 * This list contains only: 1266 * - VID/PID of products not working with the default multitouch handling 1267 * - 2 generic rules. 1268 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1269 */ 1270 static const struct hid_device_id mt_devices[] = { 1271 1272 /* 3M panels */ 1273 { .driver_data = MT_CLS_3M, 1274 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1275 USB_DEVICE_ID_3M1968) }, 1276 { .driver_data = MT_CLS_3M, 1277 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1278 USB_DEVICE_ID_3M2256) }, 1279 { .driver_data = MT_CLS_3M, 1280 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1281 USB_DEVICE_ID_3M3266) }, 1282 1283 /* Anton devices */ 1284 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1285 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1286 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1287 1288 /* Atmel panels */ 1289 { .driver_data = MT_CLS_SERIAL, 1290 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1291 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1292 1293 /* Baanto multitouch devices */ 1294 { .driver_data = MT_CLS_NSMU, 1295 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1296 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1297 1298 /* Cando panels */ 1299 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1300 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1301 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1302 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1303 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1304 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1305 1306 /* Chunghwa Telecom touch panels */ 1307 { .driver_data = MT_CLS_NSMU, 1308 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1309 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1310 1311 /* CJTouch panels */ 1312 { .driver_data = MT_CLS_NSMU, 1313 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1314 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1315 { .driver_data = MT_CLS_NSMU, 1316 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1317 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1318 1319 /* CVTouch panels */ 1320 { .driver_data = MT_CLS_NSMU, 1321 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1322 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1323 1324 /* eGalax devices (resistive) */ 1325 { .driver_data = MT_CLS_EGALAX, 1326 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1327 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1328 { .driver_data = MT_CLS_EGALAX, 1329 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1330 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1331 1332 /* eGalax devices (capacitive) */ 1333 { .driver_data = MT_CLS_EGALAX_SERIAL, 1334 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1335 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1336 { .driver_data = MT_CLS_EGALAX, 1337 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1338 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1339 { .driver_data = MT_CLS_EGALAX_SERIAL, 1340 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1341 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1342 { .driver_data = MT_CLS_EGALAX_SERIAL, 1343 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1344 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1345 { .driver_data = MT_CLS_EGALAX_SERIAL, 1346 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1347 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1348 { .driver_data = MT_CLS_EGALAX_SERIAL, 1349 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1350 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1351 { .driver_data = MT_CLS_EGALAX, 1352 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1353 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1354 { .driver_data = MT_CLS_EGALAX, 1355 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1356 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1357 { .driver_data = MT_CLS_EGALAX_SERIAL, 1358 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1359 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1360 { .driver_data = MT_CLS_EGALAX, 1361 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1362 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1363 { .driver_data = MT_CLS_EGALAX, 1364 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1365 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1366 { .driver_data = MT_CLS_EGALAX, 1367 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1368 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1369 { .driver_data = MT_CLS_EGALAX, 1370 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1371 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1372 { .driver_data = MT_CLS_EGALAX_SERIAL, 1373 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1374 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1375 { .driver_data = MT_CLS_EGALAX_SERIAL, 1376 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1377 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1378 { .driver_data = MT_CLS_EGALAX_SERIAL, 1379 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1380 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1381 1382 /* Elitegroup panel */ 1383 { .driver_data = MT_CLS_SERIAL, 1384 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1385 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1386 1387 /* Flatfrog Panels */ 1388 { .driver_data = MT_CLS_FLATFROG, 1389 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1390 USB_DEVICE_ID_MULTITOUCH_3200) }, 1391 1392 /* FocalTech Panels */ 1393 { .driver_data = MT_CLS_SERIAL, 1394 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1395 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1396 1397 /* GeneralTouch panel */ 1398 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1399 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1400 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1401 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1402 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1403 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1404 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1405 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1406 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1407 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1408 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1409 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1410 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1411 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1412 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1413 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1414 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1415 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1416 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1417 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1418 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1419 1420 /* Gametel game controller */ 1421 { .driver_data = MT_CLS_NSMU, 1422 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1423 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1424 1425 /* GoodTouch panels */ 1426 { .driver_data = MT_CLS_NSMU, 1427 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1428 USB_DEVICE_ID_GOODTOUCH_000f) }, 1429 1430 /* Hanvon panels */ 1431 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1432 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1433 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1434 1435 /* Ilitek dual touch panel */ 1436 { .driver_data = MT_CLS_NSMU, 1437 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1438 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1439 1440 /* LG Melfas panel */ 1441 { .driver_data = MT_CLS_LG, 1442 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1443 USB_DEVICE_ID_LG_MELFAS_MT) }, 1444 1445 /* MosArt panels */ 1446 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1447 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1448 USB_DEVICE_ID_ASUS_T91MT)}, 1449 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1450 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1451 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1452 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1453 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1454 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1455 1456 /* Panasonic panels */ 1457 { .driver_data = MT_CLS_PANASONIC, 1458 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1459 USB_DEVICE_ID_PANABOARD_UBT780) }, 1460 { .driver_data = MT_CLS_PANASONIC, 1461 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1462 USB_DEVICE_ID_PANABOARD_UBT880) }, 1463 1464 /* Novatek Panel */ 1465 { .driver_data = MT_CLS_NSMU, 1466 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1467 USB_DEVICE_ID_NOVATEK_PCT) }, 1468 1469 /* Ntrig Panel */ 1470 { .driver_data = MT_CLS_NSMU, 1471 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1472 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1473 1474 /* PixArt optical touch screen */ 1475 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1476 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1477 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1478 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1479 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1480 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1481 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1482 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1483 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1484 1485 /* PixCir-based panels */ 1486 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1487 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1488 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1489 1490 /* Quanta-based panels */ 1491 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1492 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1493 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1494 1495 /* Stantum panels */ 1496 { .driver_data = MT_CLS_CONFIDENCE, 1497 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1498 USB_DEVICE_ID_MTP_STM)}, 1499 1500 /* TopSeed panels */ 1501 { .driver_data = MT_CLS_TOPSEED, 1502 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1503 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1504 1505 /* Touch International panels */ 1506 { .driver_data = MT_CLS_NSMU, 1507 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1508 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1509 1510 /* Unitec panels */ 1511 { .driver_data = MT_CLS_NSMU, 1512 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1513 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1514 { .driver_data = MT_CLS_NSMU, 1515 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1516 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1517 1518 /* VTL panels */ 1519 { .driver_data = MT_CLS_VTL, 1520 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1521 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1522 1523 /* Wistron panels */ 1524 { .driver_data = MT_CLS_NSMU, 1525 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1526 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1527 1528 /* XAT */ 1529 { .driver_data = MT_CLS_NSMU, 1530 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1531 USB_DEVICE_ID_XAT_CSR) }, 1532 1533 /* Xiroku */ 1534 { .driver_data = MT_CLS_NSMU, 1535 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1536 USB_DEVICE_ID_XIROKU_SPX) }, 1537 { .driver_data = MT_CLS_NSMU, 1538 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1539 USB_DEVICE_ID_XIROKU_MPX) }, 1540 { .driver_data = MT_CLS_NSMU, 1541 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1542 USB_DEVICE_ID_XIROKU_CSR) }, 1543 { .driver_data = MT_CLS_NSMU, 1544 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1545 USB_DEVICE_ID_XIROKU_SPX1) }, 1546 { .driver_data = MT_CLS_NSMU, 1547 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1548 USB_DEVICE_ID_XIROKU_MPX1) }, 1549 { .driver_data = MT_CLS_NSMU, 1550 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1551 USB_DEVICE_ID_XIROKU_CSR1) }, 1552 { .driver_data = MT_CLS_NSMU, 1553 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1554 USB_DEVICE_ID_XIROKU_SPX2) }, 1555 { .driver_data = MT_CLS_NSMU, 1556 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1557 USB_DEVICE_ID_XIROKU_MPX2) }, 1558 { .driver_data = MT_CLS_NSMU, 1559 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1560 USB_DEVICE_ID_XIROKU_CSR2) }, 1561 1562 /* Generic MT device */ 1563 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1564 1565 /* Generic Win 8 certified MT device */ 1566 { .driver_data = MT_CLS_WIN_8, 1567 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1568 HID_ANY_ID, HID_ANY_ID) }, 1569 { } 1570 }; 1571 MODULE_DEVICE_TABLE(hid, mt_devices); 1572 1573 static const struct hid_usage_id mt_grabbed_usages[] = { 1574 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1575 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1576 }; 1577 1578 static struct hid_driver mt_driver = { 1579 .name = "hid-multitouch", 1580 .id_table = mt_devices, 1581 .probe = mt_probe, 1582 .remove = mt_remove, 1583 .input_mapping = mt_input_mapping, 1584 .input_mapped = mt_input_mapped, 1585 .input_configured = mt_input_configured, 1586 .feature_mapping = mt_feature_mapping, 1587 .usage_table = mt_grabbed_usages, 1588 .event = mt_event, 1589 .report = mt_report, 1590 #ifdef CONFIG_PM 1591 .reset_resume = mt_reset_resume, 1592 .resume = mt_resume, 1593 #endif 1594 }; 1595 module_hid_driver(mt_driver); 1596