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 #define MT_QUIRK_TOUCH_SIZE_SCALING (1 << 15) 73 74 #define MT_INPUTMODE_TOUCHSCREEN 0x02 75 #define MT_INPUTMODE_TOUCHPAD 0x03 76 77 #define MT_BUTTONTYPE_CLICKPAD 0 78 79 struct mt_slot { 80 __s32 x, y, cx, cy, p, w, h; 81 __s32 contactid; /* the device ContactID assigned to this slot */ 82 bool touch_state; /* is the touch valid? */ 83 bool inrange_state; /* is the finger in proximity of the sensor? */ 84 bool confidence_state; /* is the touch made by a finger? */ 85 }; 86 87 struct mt_class { 88 __s32 name; /* MT_CLS */ 89 __s32 quirks; 90 __s32 sn_move; /* Signal/noise ratio for move events */ 91 __s32 sn_width; /* Signal/noise ratio for width events */ 92 __s32 sn_height; /* Signal/noise ratio for height events */ 93 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 94 __u8 maxcontacts; 95 bool is_indirect; /* true for touchpads */ 96 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 97 }; 98 99 struct mt_fields { 100 unsigned usages[HID_MAX_FIELDS]; 101 unsigned int length; 102 }; 103 104 struct mt_device { 105 struct mt_slot curdata; /* placeholder of incoming data */ 106 struct mt_class mtclass; /* our mt device class */ 107 struct mt_fields *fields; /* temporary placeholder for storing the 108 multitouch fields */ 109 int cc_index; /* contact count field index in the report */ 110 int cc_value_index; /* contact count value index in the field */ 111 unsigned last_slot_field; /* the last field of a slot */ 112 unsigned mt_report_id; /* the report ID of the multitouch device */ 113 unsigned long initial_quirks; /* initial quirks state */ 114 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 115 __s16 inputmode_index; /* InputMode HID feature index in the report */ 116 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 117 -1 if non-existent */ 118 __u8 inputmode_value; /* InputMode HID feature value */ 119 __u8 num_received; /* how many contacts we received */ 120 __u8 num_expected; /* expected last contact index */ 121 __u8 maxcontacts; 122 __u8 touches_by_report; /* how many touches are present in one report: 123 * 1 means we should use a serial protocol 124 * > 1 means hybrid (multitouch) protocol */ 125 __u8 buttons_count; /* number of physical buttons per touchpad */ 126 bool is_buttonpad; /* is this device a button pad? */ 127 bool serial_maybe; /* need to check for serial protocol */ 128 bool curvalid; /* is the current contact valid? */ 129 unsigned mt_flags; /* flags to pass to input-mt */ 130 }; 131 132 static void mt_post_parse_default_settings(struct mt_device *td); 133 static void mt_post_parse(struct mt_device *td); 134 135 /* classes of device behavior */ 136 #define MT_CLS_DEFAULT 0x0001 137 138 #define MT_CLS_SERIAL 0x0002 139 #define MT_CLS_CONFIDENCE 0x0003 140 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 141 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 142 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 143 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 144 /* reserved 0x0008 */ 145 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 146 #define MT_CLS_NSMU 0x000a 147 /* reserved 0x0010 */ 148 /* reserved 0x0011 */ 149 #define MT_CLS_WIN_8 0x0012 150 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 151 152 /* vendor specific classes */ 153 #define MT_CLS_3M 0x0101 154 /* reserved 0x0102 */ 155 #define MT_CLS_EGALAX 0x0103 156 #define MT_CLS_EGALAX_SERIAL 0x0104 157 #define MT_CLS_TOPSEED 0x0105 158 #define MT_CLS_PANASONIC 0x0106 159 #define MT_CLS_FLATFROG 0x0107 160 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 161 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 162 #define MT_CLS_LG 0x010a 163 #define MT_CLS_VTL 0x0110 164 165 #define MT_DEFAULT_MAXCONTACT 10 166 #define MT_MAX_MAXCONTACT 250 167 168 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 169 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 170 171 /* 172 * these device-dependent functions determine what slot corresponds 173 * to a valid contact that was just read. 174 */ 175 176 static int cypress_compute_slot(struct mt_device *td) 177 { 178 if (td->curdata.contactid != 0 || td->num_received == 0) 179 return td->curdata.contactid; 180 else 181 return -1; 182 } 183 184 static struct mt_class mt_classes[] = { 185 { .name = MT_CLS_DEFAULT, 186 .quirks = MT_QUIRK_ALWAYS_VALID | 187 MT_QUIRK_CONTACT_CNT_ACCURATE }, 188 { .name = MT_CLS_NSMU, 189 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 190 { .name = MT_CLS_SERIAL, 191 .quirks = MT_QUIRK_ALWAYS_VALID}, 192 { .name = MT_CLS_CONFIDENCE, 193 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 194 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 195 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 196 MT_QUIRK_SLOT_IS_CONTACTID }, 197 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 198 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 199 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 200 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 201 .quirks = MT_QUIRK_VALID_IS_INRANGE | 202 MT_QUIRK_SLOT_IS_CONTACTID, 203 .maxcontacts = 2 }, 204 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 205 .quirks = MT_QUIRK_VALID_IS_INRANGE | 206 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 207 .maxcontacts = 2 }, 208 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 209 .quirks = MT_QUIRK_VALID_IS_INRANGE | 210 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 211 { .name = MT_CLS_WIN_8, 212 .quirks = MT_QUIRK_ALWAYS_VALID | 213 MT_QUIRK_IGNORE_DUPLICATES | 214 MT_QUIRK_HOVERING | 215 MT_QUIRK_CONTACT_CNT_ACCURATE }, 216 { .name = MT_CLS_EXPORT_ALL_INPUTS, 217 .quirks = MT_QUIRK_ALWAYS_VALID | 218 MT_QUIRK_CONTACT_CNT_ACCURATE, 219 .export_all_inputs = true }, 220 221 /* 222 * vendor specific classes 223 */ 224 { .name = MT_CLS_3M, 225 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 226 MT_QUIRK_SLOT_IS_CONTACTID | 227 MT_QUIRK_TOUCH_SIZE_SCALING, 228 .sn_move = 2048, 229 .sn_width = 128, 230 .sn_height = 128, 231 .maxcontacts = 60, 232 }, 233 { .name = MT_CLS_EGALAX, 234 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 235 MT_QUIRK_VALID_IS_INRANGE, 236 .sn_move = 4096, 237 .sn_pressure = 32, 238 }, 239 { .name = MT_CLS_EGALAX_SERIAL, 240 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 241 MT_QUIRK_ALWAYS_VALID, 242 .sn_move = 4096, 243 .sn_pressure = 32, 244 }, 245 { .name = MT_CLS_TOPSEED, 246 .quirks = MT_QUIRK_ALWAYS_VALID, 247 .is_indirect = true, 248 .maxcontacts = 2, 249 }, 250 { .name = MT_CLS_PANASONIC, 251 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 252 .maxcontacts = 4 }, 253 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 254 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 255 MT_QUIRK_VALID_IS_INRANGE | 256 MT_QUIRK_SLOT_IS_CONTACTID, 257 .maxcontacts = 2 258 }, 259 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 260 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 261 MT_QUIRK_SLOT_IS_CONTACTID 262 }, 263 264 { .name = MT_CLS_FLATFROG, 265 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 266 MT_QUIRK_NO_AREA, 267 .sn_move = 2048, 268 .maxcontacts = 40, 269 }, 270 { .name = MT_CLS_LG, 271 .quirks = MT_QUIRK_ALWAYS_VALID | 272 MT_QUIRK_FIX_CONST_CONTACT_ID | 273 MT_QUIRK_IGNORE_DUPLICATES | 274 MT_QUIRK_HOVERING | 275 MT_QUIRK_CONTACT_CNT_ACCURATE }, 276 { .name = MT_CLS_VTL, 277 .quirks = MT_QUIRK_ALWAYS_VALID | 278 MT_QUIRK_CONTACT_CNT_ACCURATE | 279 MT_QUIRK_FORCE_GET_FEATURE, 280 }, 281 { } 282 }; 283 284 static ssize_t mt_show_quirks(struct device *dev, 285 struct device_attribute *attr, 286 char *buf) 287 { 288 struct hid_device *hdev = to_hid_device(dev); 289 struct mt_device *td = hid_get_drvdata(hdev); 290 291 return sprintf(buf, "%u\n", td->mtclass.quirks); 292 } 293 294 static ssize_t mt_set_quirks(struct device *dev, 295 struct device_attribute *attr, 296 const char *buf, size_t count) 297 { 298 struct hid_device *hdev = to_hid_device(dev); 299 struct mt_device *td = hid_get_drvdata(hdev); 300 301 unsigned long val; 302 303 if (kstrtoul(buf, 0, &val)) 304 return -EINVAL; 305 306 td->mtclass.quirks = val; 307 308 if (td->cc_index < 0) 309 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 310 311 return count; 312 } 313 314 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 315 316 static struct attribute *sysfs_attrs[] = { 317 &dev_attr_quirks.attr, 318 NULL 319 }; 320 321 static struct attribute_group mt_attribute_group = { 322 .attrs = sysfs_attrs 323 }; 324 325 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 326 { 327 struct mt_device *td = hid_get_drvdata(hdev); 328 int ret, size = hid_report_len(report); 329 u8 *buf; 330 331 /* 332 * Do not fetch the feature report if the device has been explicitly 333 * marked as non-capable. 334 */ 335 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS) 336 return; 337 338 buf = hid_alloc_report_buf(report, GFP_KERNEL); 339 if (!buf) 340 return; 341 342 ret = hid_hw_raw_request(hdev, report->id, buf, size, 343 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 344 if (ret < 0) { 345 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 346 report->id); 347 } else { 348 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 349 size, 0); 350 if (ret) 351 dev_warn(&hdev->dev, "failed to report feature\n"); 352 } 353 354 kfree(buf); 355 } 356 357 static void mt_feature_mapping(struct hid_device *hdev, 358 struct hid_field *field, struct hid_usage *usage) 359 { 360 struct mt_device *td = hid_get_drvdata(hdev); 361 362 switch (usage->hid) { 363 case HID_DG_INPUTMODE: 364 /* Ignore if value index is out of bounds. */ 365 if (usage->usage_index >= field->report_count) { 366 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); 367 break; 368 } 369 370 if (td->inputmode < 0) { 371 td->inputmode = field->report->id; 372 td->inputmode_index = usage->usage_index; 373 } else { 374 /* 375 * Some elan panels wrongly declare 2 input mode 376 * features, and silently ignore when we set the 377 * value in the second field. Skip the second feature 378 * and hope for the best. 379 */ 380 dev_info(&hdev->dev, 381 "Ignoring the extra HID_DG_INPUTMODE\n"); 382 } 383 384 break; 385 case HID_DG_CONTACTMAX: 386 mt_get_feature(hdev, field->report); 387 388 td->maxcontact_report_id = field->report->id; 389 td->maxcontacts = field->value[0]; 390 if (!td->maxcontacts && 391 field->logical_maximum <= MT_MAX_MAXCONTACT) 392 td->maxcontacts = field->logical_maximum; 393 if (td->mtclass.maxcontacts) 394 /* check if the maxcontacts is given by the class */ 395 td->maxcontacts = td->mtclass.maxcontacts; 396 397 break; 398 case HID_DG_BUTTONTYPE: 399 if (usage->usage_index >= field->report_count) { 400 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 401 break; 402 } 403 404 mt_get_feature(hdev, field->report); 405 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 406 td->is_buttonpad = true; 407 408 break; 409 case 0xff0000c5: 410 /* Retrieve the Win8 blob once to enable some devices */ 411 if (usage->usage_index == 0) 412 mt_get_feature(hdev, field->report); 413 break; 414 } 415 } 416 417 static void set_abs(struct input_dev *input, unsigned int code, 418 struct hid_field *field, int snratio) 419 { 420 int fmin = field->logical_minimum; 421 int fmax = field->logical_maximum; 422 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 423 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 424 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 425 } 426 427 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 428 struct hid_input *hi) 429 { 430 struct mt_fields *f = td->fields; 431 432 if (f->length >= HID_MAX_FIELDS) 433 return; 434 435 f->usages[f->length++] = usage->hid; 436 } 437 438 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 439 struct hid_field *field, struct hid_usage *usage, 440 unsigned long **bit, int *max) 441 { 442 struct mt_device *td = hid_get_drvdata(hdev); 443 struct mt_class *cls = &td->mtclass; 444 int code; 445 struct hid_usage *prev_usage = NULL; 446 447 if (field->application == HID_DG_TOUCHSCREEN) 448 td->mt_flags |= INPUT_MT_DIRECT; 449 450 /* 451 * Model touchscreens providing buttons as touchpads. 452 */ 453 if (field->application == HID_DG_TOUCHPAD || 454 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 455 td->mt_flags |= INPUT_MT_POINTER; 456 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 457 } 458 459 /* count the buttons on touchpads */ 460 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 461 td->buttons_count++; 462 463 if (usage->usage_index) 464 prev_usage = &field->usage[usage->usage_index - 1]; 465 466 switch (usage->hid & HID_USAGE_PAGE) { 467 468 case HID_UP_GENDESK: 469 switch (usage->hid) { 470 case HID_GD_X: 471 if (prev_usage && (prev_usage->hid == usage->hid)) { 472 hid_map_usage(hi, usage, bit, max, 473 EV_ABS, ABS_MT_TOOL_X); 474 set_abs(hi->input, ABS_MT_TOOL_X, field, 475 cls->sn_move); 476 } else { 477 hid_map_usage(hi, usage, bit, max, 478 EV_ABS, ABS_MT_POSITION_X); 479 set_abs(hi->input, ABS_MT_POSITION_X, field, 480 cls->sn_move); 481 } 482 483 mt_store_field(usage, td, hi); 484 return 1; 485 case HID_GD_Y: 486 if (prev_usage && (prev_usage->hid == usage->hid)) { 487 hid_map_usage(hi, usage, bit, max, 488 EV_ABS, ABS_MT_TOOL_Y); 489 set_abs(hi->input, ABS_MT_TOOL_Y, field, 490 cls->sn_move); 491 } else { 492 hid_map_usage(hi, usage, bit, max, 493 EV_ABS, ABS_MT_POSITION_Y); 494 set_abs(hi->input, ABS_MT_POSITION_Y, field, 495 cls->sn_move); 496 } 497 498 mt_store_field(usage, td, hi); 499 return 1; 500 } 501 return 0; 502 503 case HID_UP_DIGITIZER: 504 switch (usage->hid) { 505 case HID_DG_INRANGE: 506 if (cls->quirks & MT_QUIRK_HOVERING) { 507 hid_map_usage(hi, usage, bit, max, 508 EV_ABS, ABS_MT_DISTANCE); 509 input_set_abs_params(hi->input, 510 ABS_MT_DISTANCE, 0, 1, 0, 0); 511 } 512 mt_store_field(usage, td, hi); 513 return 1; 514 case HID_DG_CONFIDENCE: 515 if (cls->name == MT_CLS_WIN_8 && 516 field->application == HID_DG_TOUCHPAD) 517 cls->quirks |= MT_QUIRK_CONFIDENCE; 518 mt_store_field(usage, td, hi); 519 return 1; 520 case HID_DG_TIPSWITCH: 521 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 522 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 523 mt_store_field(usage, td, hi); 524 return 1; 525 case HID_DG_CONTACTID: 526 mt_store_field(usage, td, hi); 527 td->touches_by_report++; 528 td->mt_report_id = field->report->id; 529 return 1; 530 case HID_DG_WIDTH: 531 hid_map_usage(hi, usage, bit, max, 532 EV_ABS, ABS_MT_TOUCH_MAJOR); 533 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 534 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 535 cls->sn_width); 536 mt_store_field(usage, td, hi); 537 return 1; 538 case HID_DG_HEIGHT: 539 hid_map_usage(hi, usage, bit, max, 540 EV_ABS, ABS_MT_TOUCH_MINOR); 541 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 542 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 543 cls->sn_height); 544 input_set_abs_params(hi->input, 545 ABS_MT_ORIENTATION, 0, 1, 0, 0); 546 } 547 mt_store_field(usage, td, hi); 548 return 1; 549 case HID_DG_TIPPRESSURE: 550 hid_map_usage(hi, usage, bit, max, 551 EV_ABS, ABS_MT_PRESSURE); 552 set_abs(hi->input, ABS_MT_PRESSURE, field, 553 cls->sn_pressure); 554 mt_store_field(usage, td, hi); 555 return 1; 556 case HID_DG_CONTACTCOUNT: 557 /* Ignore if indexes are out of bounds. */ 558 if (field->index >= field->report->maxfield || 559 usage->usage_index >= field->report_count) 560 return 1; 561 td->cc_index = field->index; 562 td->cc_value_index = usage->usage_index; 563 return 1; 564 case HID_DG_CONTACTMAX: 565 /* we don't set td->last_slot_field as contactcount and 566 * contact max are global to the report */ 567 return -1; 568 case HID_DG_TOUCH: 569 /* Legacy devices use TIPSWITCH and not TOUCH. 570 * Let's just ignore this field. */ 571 return -1; 572 } 573 /* let hid-input decide for the others */ 574 return 0; 575 576 case HID_UP_BUTTON: 577 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 578 /* 579 * MS PTP spec says that external buttons left and right have 580 * usages 2 and 3. 581 */ 582 if (cls->name == MT_CLS_WIN_8 && 583 field->application == HID_DG_TOUCHPAD && 584 (usage->hid & HID_USAGE) > 1) 585 code--; 586 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 587 input_set_capability(hi->input, EV_KEY, code); 588 return 1; 589 590 case 0xff000000: 591 /* we do not want to map these: no input-oriented meaning */ 592 return -1; 593 } 594 595 return 0; 596 } 597 598 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi, 599 struct hid_field *field, struct hid_usage *usage, 600 unsigned long **bit, int *max) 601 { 602 if (usage->type == EV_KEY || usage->type == EV_ABS) 603 set_bit(usage->type, hi->input->evbit); 604 605 return -1; 606 } 607 608 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 609 { 610 __s32 quirks = td->mtclass.quirks; 611 612 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 613 return td->curdata.contactid; 614 615 if (quirks & MT_QUIRK_CYPRESS) 616 return cypress_compute_slot(td); 617 618 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 619 return td->num_received; 620 621 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 622 return td->curdata.contactid - 1; 623 624 return input_mt_get_slot_by_key(input, td->curdata.contactid); 625 } 626 627 /* 628 * this function is called when a whole contact has been processed, 629 * so that it can assign it to a slot and store the data there 630 */ 631 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 632 { 633 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 634 td->num_received >= td->num_expected) 635 return; 636 637 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 638 int active; 639 int slotnum = mt_compute_slot(td, input); 640 struct mt_slot *s = &td->curdata; 641 struct input_mt *mt = input->mt; 642 643 if (slotnum < 0 || slotnum >= td->maxcontacts) 644 return; 645 646 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 647 struct input_mt_slot *slot = &mt->slots[slotnum]; 648 if (input_mt_is_active(slot) && 649 input_mt_is_used(mt, slot)) 650 return; 651 } 652 653 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 654 s->confidence_state = 1; 655 active = (s->touch_state || s->inrange_state) && 656 s->confidence_state; 657 658 input_mt_slot(input, slotnum); 659 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 660 if (active) { 661 /* this finger is in proximity of the sensor */ 662 int wide = (s->w > s->h); 663 int major = max(s->w, s->h); 664 int minor = min(s->w, s->h); 665 666 /* 667 * divided by two to match visual scale of touch 668 * for devices with this quirk 669 */ 670 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 671 major = major >> 1; 672 minor = minor >> 1; 673 } 674 675 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 676 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 677 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 678 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 679 input_event(input, EV_ABS, ABS_MT_DISTANCE, 680 !s->touch_state); 681 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 682 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 683 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 684 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 685 } 686 } 687 688 td->num_received++; 689 } 690 691 /* 692 * this function is called when a whole packet has been received and processed, 693 * so that it can decide what to send to the input layer. 694 */ 695 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 696 { 697 input_mt_sync_frame(input); 698 input_sync(input); 699 td->num_received = 0; 700 } 701 702 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 703 struct hid_usage *usage, __s32 value) 704 { 705 /* we will handle the hidinput part later, now remains hiddev */ 706 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 707 hid->hiddev_hid_event(hid, field, usage, value); 708 709 return 1; 710 } 711 712 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 713 struct hid_usage *usage, __s32 value) 714 { 715 struct mt_device *td = hid_get_drvdata(hid); 716 __s32 quirks = td->mtclass.quirks; 717 struct input_dev *input = field->hidinput->input; 718 719 if (hid->claimed & HID_CLAIMED_INPUT) { 720 switch (usage->hid) { 721 case HID_DG_INRANGE: 722 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 723 td->curvalid = value; 724 if (quirks & MT_QUIRK_HOVERING) 725 td->curdata.inrange_state = value; 726 break; 727 case HID_DG_TIPSWITCH: 728 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 729 td->curvalid = value; 730 td->curdata.touch_state = value; 731 break; 732 case HID_DG_CONFIDENCE: 733 if (quirks & MT_QUIRK_CONFIDENCE) 734 td->curdata.confidence_state = value; 735 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 736 td->curvalid = value; 737 break; 738 case HID_DG_CONTACTID: 739 td->curdata.contactid = value; 740 break; 741 case HID_DG_TIPPRESSURE: 742 td->curdata.p = value; 743 break; 744 case HID_GD_X: 745 if (usage->code == ABS_MT_TOOL_X) 746 td->curdata.cx = value; 747 else 748 td->curdata.x = value; 749 break; 750 case HID_GD_Y: 751 if (usage->code == ABS_MT_TOOL_Y) 752 td->curdata.cy = value; 753 else 754 td->curdata.y = value; 755 break; 756 case HID_DG_WIDTH: 757 td->curdata.w = value; 758 break; 759 case HID_DG_HEIGHT: 760 td->curdata.h = value; 761 break; 762 case HID_DG_CONTACTCOUNT: 763 break; 764 case HID_DG_TOUCH: 765 /* do nothing */ 766 break; 767 768 default: 769 if (usage->type) 770 input_event(input, usage->type, usage->code, 771 value); 772 return; 773 } 774 775 if (usage->usage_index + 1 == field->report_count) { 776 /* we only take into account the last report. */ 777 if (usage->hid == td->last_slot_field) 778 mt_complete_slot(td, field->hidinput->input); 779 } 780 781 } 782 } 783 784 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 785 { 786 struct mt_device *td = hid_get_drvdata(hid); 787 struct hid_field *field; 788 unsigned count; 789 int r, n; 790 791 /* 792 * Includes multi-packet support where subsequent 793 * packets are sent with zero contactcount. 794 */ 795 if (td->cc_index >= 0) { 796 struct hid_field *field = report->field[td->cc_index]; 797 int value = field->value[td->cc_value_index]; 798 if (value) 799 td->num_expected = value; 800 } 801 802 for (r = 0; r < report->maxfield; r++) { 803 field = report->field[r]; 804 count = field->report_count; 805 806 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 807 continue; 808 809 for (n = 0; n < count; n++) 810 mt_process_mt_event(hid, field, &field->usage[n], 811 field->value[n]); 812 } 813 814 if (td->num_received >= td->num_expected) 815 mt_sync_frame(td, report->field[0]->hidinput->input); 816 } 817 818 static int mt_touch_input_configured(struct hid_device *hdev, 819 struct hid_input *hi) 820 { 821 struct mt_device *td = hid_get_drvdata(hdev); 822 struct mt_class *cls = &td->mtclass; 823 struct input_dev *input = hi->input; 824 int ret; 825 826 if (!td->maxcontacts) 827 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 828 829 mt_post_parse(td); 830 if (td->serial_maybe) 831 mt_post_parse_default_settings(td); 832 833 if (cls->is_indirect) 834 td->mt_flags |= INPUT_MT_POINTER; 835 836 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 837 td->mt_flags |= INPUT_MT_DROP_UNUSED; 838 839 /* check for clickpads */ 840 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 841 td->is_buttonpad = true; 842 843 if (td->is_buttonpad) 844 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 845 846 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 847 if (ret) 848 return ret; 849 850 td->mt_flags = 0; 851 return 0; 852 } 853 854 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 855 struct hid_field *field, struct hid_usage *usage, 856 unsigned long **bit, int *max) 857 { 858 struct mt_device *td = hid_get_drvdata(hdev); 859 860 /* 861 * If mtclass.export_all_inputs is not set, only map fields from 862 * TouchScreen or TouchPad collections. We need to ignore fields 863 * that belong to other collections such as Mouse that might have 864 * the same GenericDesktop usages. 865 */ 866 if (!td->mtclass.export_all_inputs && 867 field->application != HID_DG_TOUCHSCREEN && 868 field->application != HID_DG_PEN && 869 field->application != HID_DG_TOUCHPAD && 870 field->application != HID_GD_KEYBOARD && 871 field->application != HID_CP_CONSUMER_CONTROL) 872 return -1; 873 874 /* 875 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 876 * for the stylus. 877 * The check for mt_report_id ensures we don't process 878 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 879 * collection, but within the report ID. 880 */ 881 if (field->physical == HID_DG_STYLUS) 882 return 0; 883 else if ((field->physical == 0) && 884 (field->report->id != td->mt_report_id) && 885 (td->mt_report_id != -1)) 886 return 0; 887 888 if (field->application == HID_DG_TOUCHSCREEN || 889 field->application == HID_DG_TOUCHPAD) 890 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 891 892 /* let hid-core decide for the others */ 893 return 0; 894 } 895 896 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 897 struct hid_field *field, struct hid_usage *usage, 898 unsigned long **bit, int *max) 899 { 900 /* 901 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 902 * for the stylus. 903 */ 904 if (field->physical == HID_DG_STYLUS) 905 return 0; 906 907 if (field->application == HID_DG_TOUCHSCREEN || 908 field->application == HID_DG_TOUCHPAD) 909 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max); 910 911 /* let hid-core decide for the others */ 912 return 0; 913 } 914 915 static int mt_event(struct hid_device *hid, struct hid_field *field, 916 struct hid_usage *usage, __s32 value) 917 { 918 struct mt_device *td = hid_get_drvdata(hid); 919 920 if (field->report->id == td->mt_report_id) 921 return mt_touch_event(hid, field, usage, value); 922 923 return 0; 924 } 925 926 static void mt_report(struct hid_device *hid, struct hid_report *report) 927 { 928 struct mt_device *td = hid_get_drvdata(hid); 929 struct hid_field *field = report->field[0]; 930 931 if (!(hid->claimed & HID_CLAIMED_INPUT)) 932 return; 933 934 if (report->id == td->mt_report_id) 935 return mt_touch_report(hid, report); 936 937 if (field && field->hidinput && field->hidinput->input) 938 input_sync(field->hidinput->input); 939 } 940 941 static void mt_set_input_mode(struct hid_device *hdev) 942 { 943 struct mt_device *td = hid_get_drvdata(hdev); 944 struct hid_report *r; 945 struct hid_report_enum *re; 946 struct mt_class *cls = &td->mtclass; 947 char *buf; 948 int report_len; 949 950 if (td->inputmode < 0) 951 return; 952 953 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 954 r = re->report_id_hash[td->inputmode]; 955 if (r) { 956 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 957 report_len = hid_report_len(r); 958 buf = hid_alloc_report_buf(r, GFP_KERNEL); 959 if (!buf) { 960 hid_err(hdev, "failed to allocate buffer for report\n"); 961 return; 962 } 963 hid_hw_raw_request(hdev, r->id, buf, report_len, 964 HID_FEATURE_REPORT, 965 HID_REQ_GET_REPORT); 966 kfree(buf); 967 } 968 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 969 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 970 } 971 } 972 973 static void mt_set_maxcontacts(struct hid_device *hdev) 974 { 975 struct mt_device *td = hid_get_drvdata(hdev); 976 struct hid_report *r; 977 struct hid_report_enum *re; 978 int fieldmax, max; 979 980 if (td->maxcontact_report_id < 0) 981 return; 982 983 if (!td->mtclass.maxcontacts) 984 return; 985 986 re = &hdev->report_enum[HID_FEATURE_REPORT]; 987 r = re->report_id_hash[td->maxcontact_report_id]; 988 if (r) { 989 max = td->mtclass.maxcontacts; 990 fieldmax = r->field[0]->logical_maximum; 991 max = min(fieldmax, max); 992 if (r->field[0]->value[0] != max) { 993 r->field[0]->value[0] = max; 994 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 995 } 996 } 997 } 998 999 static void mt_post_parse_default_settings(struct mt_device *td) 1000 { 1001 __s32 quirks = td->mtclass.quirks; 1002 1003 /* unknown serial device needs special quirks */ 1004 if (td->touches_by_report == 1) { 1005 quirks |= MT_QUIRK_ALWAYS_VALID; 1006 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1007 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1008 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1009 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1010 } 1011 1012 td->mtclass.quirks = quirks; 1013 } 1014 1015 static void mt_post_parse(struct mt_device *td) 1016 { 1017 struct mt_fields *f = td->fields; 1018 struct mt_class *cls = &td->mtclass; 1019 1020 if (td->touches_by_report > 0) { 1021 int field_count_per_touch = f->length / td->touches_by_report; 1022 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1023 } 1024 1025 if (td->cc_index < 0) 1026 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1027 } 1028 1029 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1030 { 1031 struct mt_device *td = hid_get_drvdata(hdev); 1032 char *name; 1033 const char *suffix = NULL; 1034 struct hid_field *field = hi->report->field[0]; 1035 int ret; 1036 1037 if (hi->report->id == td->mt_report_id) { 1038 ret = mt_touch_input_configured(hdev, hi); 1039 if (ret) 1040 return ret; 1041 } 1042 1043 /* 1044 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1045 * for the stylus. Check this first, and then rely on the application 1046 * field. 1047 */ 1048 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1049 suffix = "Pen"; 1050 /* force BTN_STYLUS to allow tablet matching in udev */ 1051 __set_bit(BTN_STYLUS, hi->input->keybit); 1052 } else { 1053 switch (field->application) { 1054 case HID_GD_KEYBOARD: 1055 suffix = "Keyboard"; 1056 break; 1057 case HID_GD_KEYPAD: 1058 suffix = "Keypad"; 1059 break; 1060 case HID_GD_MOUSE: 1061 suffix = "Mouse"; 1062 break; 1063 case HID_DG_STYLUS: 1064 suffix = "Pen"; 1065 /* force BTN_STYLUS to allow tablet matching in udev */ 1066 __set_bit(BTN_STYLUS, hi->input->keybit); 1067 break; 1068 case HID_DG_TOUCHSCREEN: 1069 /* we do not set suffix = "Touchscreen" */ 1070 break; 1071 case HID_DG_TOUCHPAD: 1072 suffix = "Touchpad"; 1073 break; 1074 case HID_GD_SYSTEM_CONTROL: 1075 suffix = "System Control"; 1076 break; 1077 case HID_CP_CONSUMER_CONTROL: 1078 suffix = "Consumer Control"; 1079 break; 1080 default: 1081 suffix = "UNKNOWN"; 1082 break; 1083 } 1084 } 1085 1086 if (suffix) { 1087 name = devm_kzalloc(&hi->input->dev, 1088 strlen(hdev->name) + strlen(suffix) + 2, 1089 GFP_KERNEL); 1090 if (name) { 1091 sprintf(name, "%s %s", hdev->name, suffix); 1092 hi->input->name = name; 1093 } 1094 } 1095 1096 return 0; 1097 } 1098 1099 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1100 { 1101 if (field->usage[0].hid != usage || 1102 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1103 return; 1104 1105 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1106 field->flags |= HID_MAIN_ITEM_VARIABLE; 1107 } 1108 1109 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1110 { 1111 struct hid_report *report; 1112 int i; 1113 1114 list_for_each_entry(report, 1115 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1116 list) { 1117 1118 if (!report->maxfield) 1119 continue; 1120 1121 for (i = 0; i < report->maxfield; i++) 1122 if (report->field[i]->maxusage >= 1) 1123 mt_fix_const_field(report->field[i], usage); 1124 } 1125 } 1126 1127 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1128 { 1129 int ret, i; 1130 struct mt_device *td; 1131 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1132 1133 for (i = 0; mt_classes[i].name ; i++) { 1134 if (id->driver_data == mt_classes[i].name) { 1135 mtclass = &(mt_classes[i]); 1136 break; 1137 } 1138 } 1139 1140 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1141 if (!td) { 1142 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1143 return -ENOMEM; 1144 } 1145 td->mtclass = *mtclass; 1146 td->inputmode = -1; 1147 td->maxcontact_report_id = -1; 1148 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1149 td->cc_index = -1; 1150 td->mt_report_id = -1; 1151 hid_set_drvdata(hdev, td); 1152 1153 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1154 GFP_KERNEL); 1155 if (!td->fields) { 1156 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1157 return -ENOMEM; 1158 } 1159 1160 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1161 td->serial_maybe = true; 1162 1163 /* 1164 * Store the initial quirk state 1165 */ 1166 td->initial_quirks = hdev->quirks; 1167 1168 /* This allows the driver to correctly support devices 1169 * that emit events over several HID messages. 1170 */ 1171 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1172 1173 /* 1174 * This allows the driver to handle different input sensors 1175 * that emits events through different reports on the same HID 1176 * device. 1177 */ 1178 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1179 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1180 1181 /* 1182 * Some multitouch screens do not like to be polled for input 1183 * reports. Fortunately, the Win8 spec says that all touches 1184 * should be sent during each report, making the initialization 1185 * of input reports unnecessary. For Win7 devices, well, let's hope 1186 * they will still be happy (this is only be a problem if a touch 1187 * was already there while probing the device). 1188 * 1189 * In addition some touchpads do not behave well if we read 1190 * all feature reports from them. Instead we prevent 1191 * initial report fetching and then selectively fetch each 1192 * report we are interested in. 1193 */ 1194 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1195 1196 ret = hid_parse(hdev); 1197 if (ret != 0) 1198 return ret; 1199 1200 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1201 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1202 1203 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1204 if (ret) 1205 return ret; 1206 1207 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1208 if (ret) 1209 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1210 hdev->name); 1211 1212 mt_set_maxcontacts(hdev); 1213 mt_set_input_mode(hdev); 1214 1215 /* release .fields memory as it is not used anymore */ 1216 devm_kfree(&hdev->dev, td->fields); 1217 td->fields = NULL; 1218 1219 return 0; 1220 } 1221 1222 #ifdef CONFIG_PM 1223 static void mt_release_contacts(struct hid_device *hid) 1224 { 1225 struct hid_input *hidinput; 1226 1227 list_for_each_entry(hidinput, &hid->inputs, list) { 1228 struct input_dev *input_dev = hidinput->input; 1229 struct input_mt *mt = input_dev->mt; 1230 int i; 1231 1232 if (mt) { 1233 for (i = 0; i < mt->num_slots; i++) { 1234 input_mt_slot(input_dev, i); 1235 input_mt_report_slot_state(input_dev, 1236 MT_TOOL_FINGER, 1237 false); 1238 } 1239 input_mt_sync_frame(input_dev); 1240 input_sync(input_dev); 1241 } 1242 } 1243 } 1244 1245 static int mt_reset_resume(struct hid_device *hdev) 1246 { 1247 mt_release_contacts(hdev); 1248 mt_set_maxcontacts(hdev); 1249 mt_set_input_mode(hdev); 1250 return 0; 1251 } 1252 1253 static int mt_resume(struct hid_device *hdev) 1254 { 1255 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1256 * It should be safe to send it to other devices too. 1257 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1258 1259 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1260 1261 return 0; 1262 } 1263 #endif 1264 1265 static void mt_remove(struct hid_device *hdev) 1266 { 1267 struct mt_device *td = hid_get_drvdata(hdev); 1268 1269 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1270 hid_hw_stop(hdev); 1271 hdev->quirks = td->initial_quirks; 1272 } 1273 1274 /* 1275 * This list contains only: 1276 * - VID/PID of products not working with the default multitouch handling 1277 * - 2 generic rules. 1278 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1279 */ 1280 static const struct hid_device_id mt_devices[] = { 1281 1282 /* 3M panels */ 1283 { .driver_data = MT_CLS_3M, 1284 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1285 USB_DEVICE_ID_3M1968) }, 1286 { .driver_data = MT_CLS_3M, 1287 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1288 USB_DEVICE_ID_3M2256) }, 1289 { .driver_data = MT_CLS_3M, 1290 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1291 USB_DEVICE_ID_3M3266) }, 1292 1293 /* Anton devices */ 1294 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1295 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1296 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1297 1298 /* Atmel panels */ 1299 { .driver_data = MT_CLS_SERIAL, 1300 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1301 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1302 1303 /* Baanto multitouch devices */ 1304 { .driver_data = MT_CLS_NSMU, 1305 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1306 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1307 1308 /* Cando panels */ 1309 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1310 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1311 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1312 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1313 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1314 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1315 1316 /* Chunghwa Telecom touch panels */ 1317 { .driver_data = MT_CLS_NSMU, 1318 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1319 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1320 1321 /* CJTouch panels */ 1322 { .driver_data = MT_CLS_NSMU, 1323 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1324 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1325 { .driver_data = MT_CLS_NSMU, 1326 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1327 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1328 1329 /* CVTouch panels */ 1330 { .driver_data = MT_CLS_NSMU, 1331 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1332 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1333 1334 /* eGalax devices (resistive) */ 1335 { .driver_data = MT_CLS_EGALAX, 1336 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1337 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1338 { .driver_data = MT_CLS_EGALAX, 1339 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1340 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1341 1342 /* eGalax devices (capacitive) */ 1343 { .driver_data = MT_CLS_EGALAX_SERIAL, 1344 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1345 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1346 { .driver_data = MT_CLS_EGALAX, 1347 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1348 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1349 { .driver_data = MT_CLS_EGALAX_SERIAL, 1350 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1351 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1352 { .driver_data = MT_CLS_EGALAX_SERIAL, 1353 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1354 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1355 { .driver_data = MT_CLS_EGALAX_SERIAL, 1356 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1357 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1358 { .driver_data = MT_CLS_EGALAX_SERIAL, 1359 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1360 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1361 { .driver_data = MT_CLS_EGALAX, 1362 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1363 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1364 { .driver_data = MT_CLS_EGALAX, 1365 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1366 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1367 { .driver_data = MT_CLS_EGALAX_SERIAL, 1368 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1369 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1370 { .driver_data = MT_CLS_EGALAX, 1371 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1372 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1373 { .driver_data = MT_CLS_EGALAX, 1374 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1375 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1376 { .driver_data = MT_CLS_EGALAX, 1377 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1378 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1379 { .driver_data = MT_CLS_EGALAX, 1380 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1381 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1382 { .driver_data = MT_CLS_EGALAX_SERIAL, 1383 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1384 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1385 { .driver_data = MT_CLS_EGALAX_SERIAL, 1386 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1387 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1388 { .driver_data = MT_CLS_EGALAX_SERIAL, 1389 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1390 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1391 1392 /* Elitegroup panel */ 1393 { .driver_data = MT_CLS_SERIAL, 1394 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1395 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1396 1397 /* Flatfrog Panels */ 1398 { .driver_data = MT_CLS_FLATFROG, 1399 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1400 USB_DEVICE_ID_MULTITOUCH_3200) }, 1401 1402 /* FocalTech Panels */ 1403 { .driver_data = MT_CLS_SERIAL, 1404 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1405 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1406 1407 /* GeneralTouch panel */ 1408 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1409 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1410 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1411 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1412 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1413 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1414 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1415 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1416 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1417 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1418 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1419 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1420 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1421 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1422 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1423 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1424 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1425 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1426 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1427 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1428 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1429 1430 /* Gametel game controller */ 1431 { .driver_data = MT_CLS_NSMU, 1432 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1433 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1434 1435 /* GoodTouch panels */ 1436 { .driver_data = MT_CLS_NSMU, 1437 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1438 USB_DEVICE_ID_GOODTOUCH_000f) }, 1439 1440 /* Hanvon panels */ 1441 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1442 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1443 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1444 1445 /* Ilitek dual touch panel */ 1446 { .driver_data = MT_CLS_NSMU, 1447 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1448 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1449 1450 /* LG Melfas panel */ 1451 { .driver_data = MT_CLS_LG, 1452 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1453 USB_DEVICE_ID_LG_MELFAS_MT) }, 1454 1455 /* MosArt panels */ 1456 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1457 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1458 USB_DEVICE_ID_ASUS_T91MT)}, 1459 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1460 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1461 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1462 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1463 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1464 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1465 1466 /* Panasonic panels */ 1467 { .driver_data = MT_CLS_PANASONIC, 1468 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1469 USB_DEVICE_ID_PANABOARD_UBT780) }, 1470 { .driver_data = MT_CLS_PANASONIC, 1471 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1472 USB_DEVICE_ID_PANABOARD_UBT880) }, 1473 1474 /* Novatek Panel */ 1475 { .driver_data = MT_CLS_NSMU, 1476 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1477 USB_DEVICE_ID_NOVATEK_PCT) }, 1478 1479 /* Ntrig Panel */ 1480 { .driver_data = MT_CLS_NSMU, 1481 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1482 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1483 1484 /* PixArt optical touch screen */ 1485 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1486 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1487 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1488 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1489 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1490 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1491 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1492 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1493 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1494 1495 /* PixCir-based panels */ 1496 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1497 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1498 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1499 1500 /* Quanta-based panels */ 1501 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1502 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1503 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1504 1505 /* Stantum panels */ 1506 { .driver_data = MT_CLS_CONFIDENCE, 1507 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1508 USB_DEVICE_ID_MTP_STM)}, 1509 1510 /* TopSeed panels */ 1511 { .driver_data = MT_CLS_TOPSEED, 1512 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1513 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1514 1515 /* Touch International panels */ 1516 { .driver_data = MT_CLS_NSMU, 1517 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1518 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1519 1520 /* Unitec panels */ 1521 { .driver_data = MT_CLS_NSMU, 1522 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1523 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1524 { .driver_data = MT_CLS_NSMU, 1525 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1526 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1527 1528 /* VTL panels */ 1529 { .driver_data = MT_CLS_VTL, 1530 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1531 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1532 1533 /* Wistron panels */ 1534 { .driver_data = MT_CLS_NSMU, 1535 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1536 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1537 1538 /* XAT */ 1539 { .driver_data = MT_CLS_NSMU, 1540 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1541 USB_DEVICE_ID_XAT_CSR) }, 1542 1543 /* Xiroku */ 1544 { .driver_data = MT_CLS_NSMU, 1545 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1546 USB_DEVICE_ID_XIROKU_SPX) }, 1547 { .driver_data = MT_CLS_NSMU, 1548 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1549 USB_DEVICE_ID_XIROKU_MPX) }, 1550 { .driver_data = MT_CLS_NSMU, 1551 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1552 USB_DEVICE_ID_XIROKU_CSR) }, 1553 { .driver_data = MT_CLS_NSMU, 1554 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1555 USB_DEVICE_ID_XIROKU_SPX1) }, 1556 { .driver_data = MT_CLS_NSMU, 1557 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1558 USB_DEVICE_ID_XIROKU_MPX1) }, 1559 { .driver_data = MT_CLS_NSMU, 1560 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1561 USB_DEVICE_ID_XIROKU_CSR1) }, 1562 { .driver_data = MT_CLS_NSMU, 1563 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1564 USB_DEVICE_ID_XIROKU_SPX2) }, 1565 { .driver_data = MT_CLS_NSMU, 1566 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1567 USB_DEVICE_ID_XIROKU_MPX2) }, 1568 { .driver_data = MT_CLS_NSMU, 1569 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1570 USB_DEVICE_ID_XIROKU_CSR2) }, 1571 1572 /* Generic MT device */ 1573 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1574 1575 /* Generic Win 8 certified MT device */ 1576 { .driver_data = MT_CLS_WIN_8, 1577 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1578 HID_ANY_ID, HID_ANY_ID) }, 1579 { } 1580 }; 1581 MODULE_DEVICE_TABLE(hid, mt_devices); 1582 1583 static const struct hid_usage_id mt_grabbed_usages[] = { 1584 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1585 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1586 }; 1587 1588 static struct hid_driver mt_driver = { 1589 .name = "hid-multitouch", 1590 .id_table = mt_devices, 1591 .probe = mt_probe, 1592 .remove = mt_remove, 1593 .input_mapping = mt_input_mapping, 1594 .input_mapped = mt_input_mapped, 1595 .input_configured = mt_input_configured, 1596 .feature_mapping = mt_feature_mapping, 1597 .usage_table = mt_grabbed_usages, 1598 .event = mt_event, 1599 .report = mt_report, 1600 #ifdef CONFIG_PM 1601 .reset_resume = mt_reset_resume, 1602 .resume = mt_resume, 1603 #endif 1604 }; 1605 module_hid_driver(mt_driver); 1606