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 #include <linux/timer.h> 48 49 50 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 51 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 52 MODULE_DESCRIPTION("HID multitouch panels"); 53 MODULE_LICENSE("GPL"); 54 55 #include "hid-ids.h" 56 57 /* quirks to control the device */ 58 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 59 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 60 #define MT_QUIRK_CYPRESS BIT(2) 61 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 62 #define MT_QUIRK_ALWAYS_VALID BIT(4) 63 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 64 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 65 #define MT_QUIRK_CONFIDENCE BIT(7) 66 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 67 #define MT_QUIRK_NO_AREA BIT(9) 68 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 69 #define MT_QUIRK_HOVERING BIT(11) 70 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 71 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 72 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 73 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 74 #define MT_QUIRK_STICKY_FINGERS BIT(16) 75 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 76 77 #define MT_INPUTMODE_TOUCHSCREEN 0x02 78 #define MT_INPUTMODE_TOUCHPAD 0x03 79 80 #define MT_BUTTONTYPE_CLICKPAD 0 81 82 #define MT_IO_FLAGS_RUNNING 0 83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 84 #define MT_IO_FLAGS_PENDING_SLOTS 2 85 86 struct mt_slot { 87 __s32 x, y, cx, cy, p, w, h; 88 __s32 contactid; /* the device ContactID assigned to this slot */ 89 bool touch_state; /* is the touch valid? */ 90 bool inrange_state; /* is the finger in proximity of the sensor? */ 91 bool confidence_state; /* is the touch made by a finger? */ 92 }; 93 94 struct mt_class { 95 __s32 name; /* MT_CLS */ 96 __s32 quirks; 97 __s32 sn_move; /* Signal/noise ratio for move events */ 98 __s32 sn_width; /* Signal/noise ratio for width events */ 99 __s32 sn_height; /* Signal/noise ratio for height events */ 100 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 101 __u8 maxcontacts; 102 bool is_indirect; /* true for touchpads */ 103 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 104 }; 105 106 struct mt_fields { 107 unsigned usages[HID_MAX_FIELDS]; 108 unsigned int length; 109 }; 110 111 struct mt_device { 112 struct mt_slot curdata; /* placeholder of incoming data */ 113 struct mt_class mtclass; /* our mt device class */ 114 struct timer_list release_timer; /* to release sticky fingers */ 115 struct mt_fields *fields; /* temporary placeholder for storing the 116 multitouch fields */ 117 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 118 int cc_index; /* contact count field index in the report */ 119 int cc_value_index; /* contact count value index in the field */ 120 unsigned last_slot_field; /* the last field of a slot */ 121 unsigned mt_report_id; /* the report ID of the multitouch device */ 122 unsigned long initial_quirks; /* initial quirks state */ 123 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 124 __s16 inputmode_index; /* InputMode HID feature index in the report */ 125 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 126 -1 if non-existent */ 127 __u8 inputmode_value; /* InputMode HID feature value */ 128 __u8 num_received; /* how many contacts we received */ 129 __u8 num_expected; /* expected last contact index */ 130 __u8 maxcontacts; 131 __u8 touches_by_report; /* how many touches are present in one report: 132 * 1 means we should use a serial protocol 133 * > 1 means hybrid (multitouch) protocol */ 134 __u8 buttons_count; /* number of physical buttons per touchpad */ 135 bool is_buttonpad; /* is this device a button pad? */ 136 bool serial_maybe; /* need to check for serial protocol */ 137 bool curvalid; /* is the current contact valid? */ 138 unsigned mt_flags; /* flags to pass to input-mt */ 139 }; 140 141 static void mt_post_parse_default_settings(struct mt_device *td); 142 static void mt_post_parse(struct mt_device *td); 143 144 /* classes of device behavior */ 145 #define MT_CLS_DEFAULT 0x0001 146 147 #define MT_CLS_SERIAL 0x0002 148 #define MT_CLS_CONFIDENCE 0x0003 149 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 150 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 151 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 152 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 153 /* reserved 0x0008 */ 154 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 155 #define MT_CLS_NSMU 0x000a 156 /* reserved 0x0010 */ 157 /* reserved 0x0011 */ 158 #define MT_CLS_WIN_8 0x0012 159 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 160 #define MT_CLS_WIN_8_DUAL 0x0014 161 162 /* vendor specific classes */ 163 #define MT_CLS_3M 0x0101 164 /* reserved 0x0102 */ 165 #define MT_CLS_EGALAX 0x0103 166 #define MT_CLS_EGALAX_SERIAL 0x0104 167 #define MT_CLS_TOPSEED 0x0105 168 #define MT_CLS_PANASONIC 0x0106 169 #define MT_CLS_FLATFROG 0x0107 170 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 171 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 172 #define MT_CLS_LG 0x010a 173 #define MT_CLS_ASUS 0x010b 174 #define MT_CLS_VTL 0x0110 175 #define MT_CLS_GOOGLE 0x0111 176 177 #define MT_DEFAULT_MAXCONTACT 10 178 #define MT_MAX_MAXCONTACT 250 179 180 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 181 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 182 183 /* 184 * these device-dependent functions determine what slot corresponds 185 * to a valid contact that was just read. 186 */ 187 188 static int cypress_compute_slot(struct mt_device *td) 189 { 190 if (td->curdata.contactid != 0 || td->num_received == 0) 191 return td->curdata.contactid; 192 else 193 return -1; 194 } 195 196 static struct mt_class mt_classes[] = { 197 { .name = MT_CLS_DEFAULT, 198 .quirks = MT_QUIRK_ALWAYS_VALID | 199 MT_QUIRK_CONTACT_CNT_ACCURATE }, 200 { .name = MT_CLS_NSMU, 201 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 202 { .name = MT_CLS_SERIAL, 203 .quirks = MT_QUIRK_ALWAYS_VALID}, 204 { .name = MT_CLS_CONFIDENCE, 205 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 206 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 207 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 208 MT_QUIRK_SLOT_IS_CONTACTID }, 209 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 210 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 211 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 212 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 213 .quirks = MT_QUIRK_VALID_IS_INRANGE | 214 MT_QUIRK_SLOT_IS_CONTACTID, 215 .maxcontacts = 2 }, 216 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 217 .quirks = MT_QUIRK_VALID_IS_INRANGE | 218 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 219 .maxcontacts = 2 }, 220 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 221 .quirks = MT_QUIRK_VALID_IS_INRANGE | 222 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 223 { .name = MT_CLS_WIN_8, 224 .quirks = MT_QUIRK_ALWAYS_VALID | 225 MT_QUIRK_IGNORE_DUPLICATES | 226 MT_QUIRK_HOVERING | 227 MT_QUIRK_CONTACT_CNT_ACCURATE | 228 MT_QUIRK_STICKY_FINGERS }, 229 { .name = MT_CLS_EXPORT_ALL_INPUTS, 230 .quirks = MT_QUIRK_ALWAYS_VALID | 231 MT_QUIRK_CONTACT_CNT_ACCURATE, 232 .export_all_inputs = true }, 233 { .name = MT_CLS_WIN_8_DUAL, 234 .quirks = MT_QUIRK_ALWAYS_VALID | 235 MT_QUIRK_IGNORE_DUPLICATES | 236 MT_QUIRK_HOVERING | 237 MT_QUIRK_CONTACT_CNT_ACCURATE, 238 .export_all_inputs = true }, 239 240 /* 241 * vendor specific classes 242 */ 243 { .name = MT_CLS_3M, 244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 245 MT_QUIRK_SLOT_IS_CONTACTID | 246 MT_QUIRK_TOUCH_SIZE_SCALING, 247 .sn_move = 2048, 248 .sn_width = 128, 249 .sn_height = 128, 250 .maxcontacts = 60, 251 }, 252 { .name = MT_CLS_EGALAX, 253 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 254 MT_QUIRK_VALID_IS_INRANGE, 255 .sn_move = 4096, 256 .sn_pressure = 32, 257 }, 258 { .name = MT_CLS_EGALAX_SERIAL, 259 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 260 MT_QUIRK_ALWAYS_VALID, 261 .sn_move = 4096, 262 .sn_pressure = 32, 263 }, 264 { .name = MT_CLS_TOPSEED, 265 .quirks = MT_QUIRK_ALWAYS_VALID, 266 .is_indirect = true, 267 .maxcontacts = 2, 268 }, 269 { .name = MT_CLS_PANASONIC, 270 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 271 .maxcontacts = 4 }, 272 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 273 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 274 MT_QUIRK_VALID_IS_INRANGE | 275 MT_QUIRK_SLOT_IS_CONTACTID, 276 .maxcontacts = 2 277 }, 278 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 279 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 280 MT_QUIRK_SLOT_IS_CONTACTID 281 }, 282 283 { .name = MT_CLS_FLATFROG, 284 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 285 MT_QUIRK_NO_AREA, 286 .sn_move = 2048, 287 .maxcontacts = 40, 288 }, 289 { .name = MT_CLS_LG, 290 .quirks = MT_QUIRK_ALWAYS_VALID | 291 MT_QUIRK_FIX_CONST_CONTACT_ID | 292 MT_QUIRK_IGNORE_DUPLICATES | 293 MT_QUIRK_HOVERING | 294 MT_QUIRK_CONTACT_CNT_ACCURATE }, 295 { .name = MT_CLS_ASUS, 296 .quirks = MT_QUIRK_ALWAYS_VALID | 297 MT_QUIRK_CONTACT_CNT_ACCURATE | 298 MT_QUIRK_ASUS_CUSTOM_UP }, 299 { .name = MT_CLS_VTL, 300 .quirks = MT_QUIRK_ALWAYS_VALID | 301 MT_QUIRK_CONTACT_CNT_ACCURATE | 302 MT_QUIRK_FORCE_GET_FEATURE, 303 }, 304 { .name = MT_CLS_GOOGLE, 305 .quirks = MT_QUIRK_ALWAYS_VALID | 306 MT_QUIRK_CONTACT_CNT_ACCURATE | 307 MT_QUIRK_SLOT_IS_CONTACTID | 308 MT_QUIRK_HOVERING 309 }, 310 { } 311 }; 312 313 static ssize_t mt_show_quirks(struct device *dev, 314 struct device_attribute *attr, 315 char *buf) 316 { 317 struct hid_device *hdev = to_hid_device(dev); 318 struct mt_device *td = hid_get_drvdata(hdev); 319 320 return sprintf(buf, "%u\n", td->mtclass.quirks); 321 } 322 323 static ssize_t mt_set_quirks(struct device *dev, 324 struct device_attribute *attr, 325 const char *buf, size_t count) 326 { 327 struct hid_device *hdev = to_hid_device(dev); 328 struct mt_device *td = hid_get_drvdata(hdev); 329 330 unsigned long val; 331 332 if (kstrtoul(buf, 0, &val)) 333 return -EINVAL; 334 335 td->mtclass.quirks = val; 336 337 if (td->cc_index < 0) 338 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 339 340 return count; 341 } 342 343 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 344 345 static struct attribute *sysfs_attrs[] = { 346 &dev_attr_quirks.attr, 347 NULL 348 }; 349 350 static const struct attribute_group mt_attribute_group = { 351 .attrs = sysfs_attrs 352 }; 353 354 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 355 { 356 struct mt_device *td = hid_get_drvdata(hdev); 357 int ret, size = hid_report_len(report); 358 u8 *buf; 359 360 /* 361 * Do not fetch the feature report if the device has been explicitly 362 * marked as non-capable. 363 */ 364 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS) 365 return; 366 367 buf = hid_alloc_report_buf(report, GFP_KERNEL); 368 if (!buf) 369 return; 370 371 ret = hid_hw_raw_request(hdev, report->id, buf, size, 372 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 373 if (ret < 0) { 374 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 375 report->id); 376 } else { 377 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 378 size, 0); 379 if (ret) 380 dev_warn(&hdev->dev, "failed to report feature\n"); 381 } 382 383 kfree(buf); 384 } 385 386 static void mt_feature_mapping(struct hid_device *hdev, 387 struct hid_field *field, struct hid_usage *usage) 388 { 389 struct mt_device *td = hid_get_drvdata(hdev); 390 391 switch (usage->hid) { 392 case HID_DG_INPUTMODE: 393 /* Ignore if value index is out of bounds. */ 394 if (usage->usage_index >= field->report_count) { 395 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); 396 break; 397 } 398 399 if (td->inputmode < 0) { 400 td->inputmode = field->report->id; 401 td->inputmode_index = usage->usage_index; 402 } else { 403 /* 404 * Some elan panels wrongly declare 2 input mode 405 * features, and silently ignore when we set the 406 * value in the second field. Skip the second feature 407 * and hope for the best. 408 */ 409 dev_info(&hdev->dev, 410 "Ignoring the extra HID_DG_INPUTMODE\n"); 411 } 412 413 break; 414 case HID_DG_CONTACTMAX: 415 mt_get_feature(hdev, field->report); 416 417 td->maxcontact_report_id = field->report->id; 418 td->maxcontacts = field->value[0]; 419 if (!td->maxcontacts && 420 field->logical_maximum <= MT_MAX_MAXCONTACT) 421 td->maxcontacts = field->logical_maximum; 422 if (td->mtclass.maxcontacts) 423 /* check if the maxcontacts is given by the class */ 424 td->maxcontacts = td->mtclass.maxcontacts; 425 426 break; 427 case HID_DG_BUTTONTYPE: 428 if (usage->usage_index >= field->report_count) { 429 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 430 break; 431 } 432 433 mt_get_feature(hdev, field->report); 434 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 435 td->is_buttonpad = true; 436 437 break; 438 case 0xff0000c5: 439 /* Retrieve the Win8 blob once to enable some devices */ 440 if (usage->usage_index == 0) 441 mt_get_feature(hdev, field->report); 442 break; 443 } 444 } 445 446 static void set_abs(struct input_dev *input, unsigned int code, 447 struct hid_field *field, int snratio) 448 { 449 int fmin = field->logical_minimum; 450 int fmax = field->logical_maximum; 451 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 452 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 453 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 454 } 455 456 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 457 struct hid_input *hi) 458 { 459 struct mt_fields *f = td->fields; 460 461 if (f->length >= HID_MAX_FIELDS) 462 return; 463 464 f->usages[f->length++] = usage->hid; 465 } 466 467 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 468 struct hid_field *field, struct hid_usage *usage, 469 unsigned long **bit, int *max) 470 { 471 struct mt_device *td = hid_get_drvdata(hdev); 472 struct mt_class *cls = &td->mtclass; 473 int code; 474 struct hid_usage *prev_usage = NULL; 475 476 if (field->application == HID_DG_TOUCHSCREEN) 477 td->mt_flags |= INPUT_MT_DIRECT; 478 479 /* 480 * Model touchscreens providing buttons as touchpads. 481 */ 482 if (field->application == HID_DG_TOUCHPAD || 483 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 484 td->mt_flags |= INPUT_MT_POINTER; 485 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 486 } 487 488 /* count the buttons on touchpads */ 489 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 490 td->buttons_count++; 491 492 if (usage->usage_index) 493 prev_usage = &field->usage[usage->usage_index - 1]; 494 495 switch (usage->hid & HID_USAGE_PAGE) { 496 497 case HID_UP_GENDESK: 498 switch (usage->hid) { 499 case HID_GD_X: 500 if (prev_usage && (prev_usage->hid == usage->hid)) { 501 hid_map_usage(hi, usage, bit, max, 502 EV_ABS, ABS_MT_TOOL_X); 503 set_abs(hi->input, ABS_MT_TOOL_X, field, 504 cls->sn_move); 505 } else { 506 hid_map_usage(hi, usage, bit, max, 507 EV_ABS, ABS_MT_POSITION_X); 508 set_abs(hi->input, ABS_MT_POSITION_X, field, 509 cls->sn_move); 510 } 511 512 mt_store_field(usage, td, hi); 513 return 1; 514 case HID_GD_Y: 515 if (prev_usage && (prev_usage->hid == usage->hid)) { 516 hid_map_usage(hi, usage, bit, max, 517 EV_ABS, ABS_MT_TOOL_Y); 518 set_abs(hi->input, ABS_MT_TOOL_Y, field, 519 cls->sn_move); 520 } else { 521 hid_map_usage(hi, usage, bit, max, 522 EV_ABS, ABS_MT_POSITION_Y); 523 set_abs(hi->input, ABS_MT_POSITION_Y, field, 524 cls->sn_move); 525 } 526 527 mt_store_field(usage, td, hi); 528 return 1; 529 } 530 return 0; 531 532 case HID_UP_DIGITIZER: 533 switch (usage->hid) { 534 case HID_DG_INRANGE: 535 if (cls->quirks & MT_QUIRK_HOVERING) { 536 hid_map_usage(hi, usage, bit, max, 537 EV_ABS, ABS_MT_DISTANCE); 538 input_set_abs_params(hi->input, 539 ABS_MT_DISTANCE, 0, 1, 0, 0); 540 } 541 mt_store_field(usage, td, hi); 542 return 1; 543 case HID_DG_CONFIDENCE: 544 if ((cls->name == MT_CLS_WIN_8 || 545 cls->name == MT_CLS_WIN_8_DUAL) && 546 field->application == HID_DG_TOUCHPAD) 547 cls->quirks |= MT_QUIRK_CONFIDENCE; 548 mt_store_field(usage, td, hi); 549 return 1; 550 case HID_DG_TIPSWITCH: 551 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 552 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 553 mt_store_field(usage, td, hi); 554 return 1; 555 case HID_DG_CONTACTID: 556 mt_store_field(usage, td, hi); 557 td->touches_by_report++; 558 td->mt_report_id = field->report->id; 559 return 1; 560 case HID_DG_WIDTH: 561 hid_map_usage(hi, usage, bit, max, 562 EV_ABS, ABS_MT_TOUCH_MAJOR); 563 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 564 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 565 cls->sn_width); 566 mt_store_field(usage, td, hi); 567 return 1; 568 case HID_DG_HEIGHT: 569 hid_map_usage(hi, usage, bit, max, 570 EV_ABS, ABS_MT_TOUCH_MINOR); 571 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 572 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 573 cls->sn_height); 574 input_set_abs_params(hi->input, 575 ABS_MT_ORIENTATION, 0, 1, 0, 0); 576 } 577 mt_store_field(usage, td, hi); 578 return 1; 579 case HID_DG_TIPPRESSURE: 580 hid_map_usage(hi, usage, bit, max, 581 EV_ABS, ABS_MT_PRESSURE); 582 set_abs(hi->input, ABS_MT_PRESSURE, field, 583 cls->sn_pressure); 584 mt_store_field(usage, td, hi); 585 return 1; 586 case HID_DG_CONTACTCOUNT: 587 /* Ignore if indexes are out of bounds. */ 588 if (field->index >= field->report->maxfield || 589 usage->usage_index >= field->report_count) 590 return 1; 591 td->cc_index = field->index; 592 td->cc_value_index = usage->usage_index; 593 return 1; 594 case HID_DG_CONTACTMAX: 595 /* we don't set td->last_slot_field as contactcount and 596 * contact max are global to the report */ 597 return -1; 598 case HID_DG_TOUCH: 599 /* Legacy devices use TIPSWITCH and not TOUCH. 600 * Let's just ignore this field. */ 601 return -1; 602 } 603 /* let hid-input decide for the others */ 604 return 0; 605 606 case HID_UP_BUTTON: 607 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 608 /* 609 * MS PTP spec says that external buttons left and right have 610 * usages 2 and 3. 611 */ 612 if ((cls->name == MT_CLS_WIN_8 || 613 cls->name == MT_CLS_WIN_8_DUAL) && 614 field->application == HID_DG_TOUCHPAD && 615 (usage->hid & HID_USAGE) > 1) 616 code--; 617 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 618 input_set_capability(hi->input, EV_KEY, code); 619 return 1; 620 621 case 0xff000000: 622 /* we do not want to map these: no input-oriented meaning */ 623 return -1; 624 } 625 626 return 0; 627 } 628 629 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 630 { 631 __s32 quirks = td->mtclass.quirks; 632 633 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 634 return td->curdata.contactid; 635 636 if (quirks & MT_QUIRK_CYPRESS) 637 return cypress_compute_slot(td); 638 639 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 640 return td->num_received; 641 642 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 643 return td->curdata.contactid - 1; 644 645 return input_mt_get_slot_by_key(input, td->curdata.contactid); 646 } 647 648 /* 649 * this function is called when a whole contact has been processed, 650 * so that it can assign it to a slot and store the data there 651 */ 652 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 653 { 654 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 655 td->num_received >= td->num_expected) 656 return; 657 658 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 659 int active; 660 int slotnum = mt_compute_slot(td, input); 661 struct mt_slot *s = &td->curdata; 662 struct input_mt *mt = input->mt; 663 664 if (slotnum < 0 || slotnum >= td->maxcontacts) 665 return; 666 667 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 668 struct input_mt_slot *slot = &mt->slots[slotnum]; 669 if (input_mt_is_active(slot) && 670 input_mt_is_used(mt, slot)) 671 return; 672 } 673 674 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 675 s->confidence_state = 1; 676 active = (s->touch_state || s->inrange_state) && 677 s->confidence_state; 678 679 input_mt_slot(input, slotnum); 680 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 681 if (active) { 682 /* this finger is in proximity of the sensor */ 683 int wide = (s->w > s->h); 684 int major = max(s->w, s->h); 685 int minor = min(s->w, s->h); 686 687 /* 688 * divided by two to match visual scale of touch 689 * for devices with this quirk 690 */ 691 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 692 major = major >> 1; 693 minor = minor >> 1; 694 } 695 696 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 697 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 698 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 699 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 700 input_event(input, EV_ABS, ABS_MT_DISTANCE, 701 !s->touch_state); 702 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 703 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 704 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 705 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 706 707 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 708 } 709 } 710 711 td->num_received++; 712 } 713 714 /* 715 * this function is called when a whole packet has been received and processed, 716 * so that it can decide what to send to the input layer. 717 */ 718 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 719 { 720 input_mt_sync_frame(input); 721 input_sync(input); 722 td->num_received = 0; 723 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 724 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 725 else 726 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 727 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 728 } 729 730 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 731 struct hid_usage *usage, __s32 value) 732 { 733 /* we will handle the hidinput part later, now remains hiddev */ 734 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 735 hid->hiddev_hid_event(hid, field, usage, value); 736 737 return 1; 738 } 739 740 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 741 struct hid_usage *usage, __s32 value) 742 { 743 struct mt_device *td = hid_get_drvdata(hid); 744 __s32 quirks = td->mtclass.quirks; 745 struct input_dev *input = field->hidinput->input; 746 747 if (hid->claimed & HID_CLAIMED_INPUT) { 748 switch (usage->hid) { 749 case HID_DG_INRANGE: 750 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 751 td->curvalid = value; 752 if (quirks & MT_QUIRK_HOVERING) 753 td->curdata.inrange_state = value; 754 break; 755 case HID_DG_TIPSWITCH: 756 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 757 td->curvalid = value; 758 td->curdata.touch_state = value; 759 break; 760 case HID_DG_CONFIDENCE: 761 if (quirks & MT_QUIRK_CONFIDENCE) 762 td->curdata.confidence_state = value; 763 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 764 td->curvalid = value; 765 break; 766 case HID_DG_CONTACTID: 767 td->curdata.contactid = value; 768 break; 769 case HID_DG_TIPPRESSURE: 770 td->curdata.p = value; 771 break; 772 case HID_GD_X: 773 if (usage->code == ABS_MT_TOOL_X) 774 td->curdata.cx = value; 775 else 776 td->curdata.x = value; 777 break; 778 case HID_GD_Y: 779 if (usage->code == ABS_MT_TOOL_Y) 780 td->curdata.cy = value; 781 else 782 td->curdata.y = value; 783 break; 784 case HID_DG_WIDTH: 785 td->curdata.w = value; 786 break; 787 case HID_DG_HEIGHT: 788 td->curdata.h = value; 789 break; 790 case HID_DG_CONTACTCOUNT: 791 break; 792 case HID_DG_TOUCH: 793 /* do nothing */ 794 break; 795 796 default: 797 if (usage->type) 798 input_event(input, usage->type, usage->code, 799 value); 800 return; 801 } 802 803 if (usage->usage_index + 1 == field->report_count) { 804 /* we only take into account the last report. */ 805 if (usage->hid == td->last_slot_field) 806 mt_complete_slot(td, field->hidinput->input); 807 } 808 809 } 810 } 811 812 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 813 { 814 struct mt_device *td = hid_get_drvdata(hid); 815 struct hid_field *field; 816 unsigned count; 817 int r, n; 818 819 /* sticky fingers release in progress, abort */ 820 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 821 return; 822 823 /* 824 * Includes multi-packet support where subsequent 825 * packets are sent with zero contactcount. 826 */ 827 if (td->cc_index >= 0) { 828 struct hid_field *field = report->field[td->cc_index]; 829 int value = field->value[td->cc_value_index]; 830 if (value) 831 td->num_expected = value; 832 } 833 834 for (r = 0; r < report->maxfield; r++) { 835 field = report->field[r]; 836 count = field->report_count; 837 838 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 839 continue; 840 841 for (n = 0; n < count; n++) 842 mt_process_mt_event(hid, field, &field->usage[n], 843 field->value[n]); 844 } 845 846 if (td->num_received >= td->num_expected) 847 mt_sync_frame(td, report->field[0]->hidinput->input); 848 849 /* 850 * Windows 8 specs says 2 things: 851 * - once a contact has been reported, it has to be reported in each 852 * subsequent report 853 * - the report rate when fingers are present has to be at least 854 * the refresh rate of the screen, 60 or 120 Hz 855 * 856 * I interprete this that the specification forces a report rate of 857 * at least 60 Hz for a touchscreen to be certified. 858 * Which means that if we do not get a report whithin 16 ms, either 859 * something wrong happens, either the touchscreen forgets to send 860 * a release. Taking a reasonable margin allows to remove issues 861 * with USB communication or the load of the machine. 862 * 863 * Given that Win 8 devices are forced to send a release, this will 864 * only affect laggish machines and the ones that have a firmware 865 * defect. 866 */ 867 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) { 868 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 869 mod_timer(&td->release_timer, 870 jiffies + msecs_to_jiffies(100)); 871 else 872 del_timer(&td->release_timer); 873 } 874 875 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 876 } 877 878 static int mt_touch_input_configured(struct hid_device *hdev, 879 struct hid_input *hi) 880 { 881 struct mt_device *td = hid_get_drvdata(hdev); 882 struct mt_class *cls = &td->mtclass; 883 struct input_dev *input = hi->input; 884 int ret; 885 886 if (!td->maxcontacts) 887 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 888 889 mt_post_parse(td); 890 if (td->serial_maybe) 891 mt_post_parse_default_settings(td); 892 893 if (cls->is_indirect) 894 td->mt_flags |= INPUT_MT_POINTER; 895 896 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 897 td->mt_flags |= INPUT_MT_DROP_UNUSED; 898 899 /* check for clickpads */ 900 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 901 td->is_buttonpad = true; 902 903 if (td->is_buttonpad) 904 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 905 906 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 907 if (ret) 908 return ret; 909 910 td->mt_flags = 0; 911 return 0; 912 } 913 914 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 915 max, EV_KEY, (c)) 916 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 917 struct hid_field *field, struct hid_usage *usage, 918 unsigned long **bit, int *max) 919 { 920 struct mt_device *td = hid_get_drvdata(hdev); 921 922 /* 923 * If mtclass.export_all_inputs is not set, only map fields from 924 * TouchScreen or TouchPad collections. We need to ignore fields 925 * that belong to other collections such as Mouse that might have 926 * the same GenericDesktop usages. 927 */ 928 if (!td->mtclass.export_all_inputs && 929 field->application != HID_DG_TOUCHSCREEN && 930 field->application != HID_DG_PEN && 931 field->application != HID_DG_TOUCHPAD && 932 field->application != HID_GD_KEYBOARD && 933 field->application != HID_CP_CONSUMER_CONTROL && 934 field->application != HID_GD_WIRELESS_RADIO_CTLS && 935 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 936 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 937 return -1; 938 939 /* 940 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 941 * touchpad report descriptor. We need to treat these as an array to 942 * map usages to input keys. 943 */ 944 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 945 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP && 946 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 947 set_bit(EV_REP, hi->input->evbit); 948 if (field->flags & HID_MAIN_ITEM_VARIABLE) 949 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 950 switch (usage->hid & HID_USAGE) { 951 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 952 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 953 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 954 case 0x6b: mt_map_key_clear(KEY_F21); break; 955 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 956 default: 957 return -1; 958 } 959 return 1; 960 } 961 962 /* 963 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 964 * for the stylus. 965 * The check for mt_report_id ensures we don't process 966 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 967 * collection, but within the report ID. 968 */ 969 if (field->physical == HID_DG_STYLUS) 970 return 0; 971 else if ((field->physical == 0) && 972 (field->report->id != td->mt_report_id) && 973 (td->mt_report_id != -1)) 974 return 0; 975 976 if (field->application == HID_DG_TOUCHSCREEN || 977 field->application == HID_DG_TOUCHPAD) 978 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 979 980 /* let hid-core decide for the others */ 981 return 0; 982 } 983 984 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 985 struct hid_field *field, struct hid_usage *usage, 986 unsigned long **bit, int *max) 987 { 988 /* 989 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 990 * for the stylus. 991 */ 992 if (field->physical == HID_DG_STYLUS) 993 return 0; 994 995 if (field->application == HID_DG_TOUCHSCREEN || 996 field->application == HID_DG_TOUCHPAD) { 997 /* We own these mappings, tell hid-input to ignore them */ 998 return -1; 999 } 1000 1001 /* let hid-core decide for the others */ 1002 return 0; 1003 } 1004 1005 static int mt_event(struct hid_device *hid, struct hid_field *field, 1006 struct hid_usage *usage, __s32 value) 1007 { 1008 struct mt_device *td = hid_get_drvdata(hid); 1009 1010 if (field->report->id == td->mt_report_id) 1011 return mt_touch_event(hid, field, usage, value); 1012 1013 return 0; 1014 } 1015 1016 static void mt_report(struct hid_device *hid, struct hid_report *report) 1017 { 1018 struct mt_device *td = hid_get_drvdata(hid); 1019 struct hid_field *field = report->field[0]; 1020 1021 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1022 return; 1023 1024 if (report->id == td->mt_report_id) 1025 return mt_touch_report(hid, report); 1026 1027 if (field && field->hidinput && field->hidinput->input) 1028 input_sync(field->hidinput->input); 1029 } 1030 1031 static void mt_set_input_mode(struct hid_device *hdev) 1032 { 1033 struct mt_device *td = hid_get_drvdata(hdev); 1034 struct hid_report *r; 1035 struct hid_report_enum *re; 1036 struct mt_class *cls = &td->mtclass; 1037 char *buf; 1038 int report_len; 1039 1040 if (td->inputmode < 0) 1041 return; 1042 1043 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 1044 r = re->report_id_hash[td->inputmode]; 1045 if (r) { 1046 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1047 report_len = hid_report_len(r); 1048 buf = hid_alloc_report_buf(r, GFP_KERNEL); 1049 if (!buf) { 1050 hid_err(hdev, "failed to allocate buffer for report\n"); 1051 return; 1052 } 1053 hid_hw_raw_request(hdev, r->id, buf, report_len, 1054 HID_FEATURE_REPORT, 1055 HID_REQ_GET_REPORT); 1056 kfree(buf); 1057 } 1058 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 1059 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1060 } 1061 } 1062 1063 static void mt_set_maxcontacts(struct hid_device *hdev) 1064 { 1065 struct mt_device *td = hid_get_drvdata(hdev); 1066 struct hid_report *r; 1067 struct hid_report_enum *re; 1068 int fieldmax, max; 1069 1070 if (td->maxcontact_report_id < 0) 1071 return; 1072 1073 if (!td->mtclass.maxcontacts) 1074 return; 1075 1076 re = &hdev->report_enum[HID_FEATURE_REPORT]; 1077 r = re->report_id_hash[td->maxcontact_report_id]; 1078 if (r) { 1079 max = td->mtclass.maxcontacts; 1080 fieldmax = r->field[0]->logical_maximum; 1081 max = min(fieldmax, max); 1082 if (r->field[0]->value[0] != max) { 1083 r->field[0]->value[0] = max; 1084 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1085 } 1086 } 1087 } 1088 1089 static void mt_post_parse_default_settings(struct mt_device *td) 1090 { 1091 __s32 quirks = td->mtclass.quirks; 1092 1093 /* unknown serial device needs special quirks */ 1094 if (td->touches_by_report == 1) { 1095 quirks |= MT_QUIRK_ALWAYS_VALID; 1096 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1097 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1098 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1099 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1100 } 1101 1102 td->mtclass.quirks = quirks; 1103 } 1104 1105 static void mt_post_parse(struct mt_device *td) 1106 { 1107 struct mt_fields *f = td->fields; 1108 struct mt_class *cls = &td->mtclass; 1109 1110 if (td->touches_by_report > 0) { 1111 int field_count_per_touch = f->length / td->touches_by_report; 1112 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1113 } 1114 1115 if (td->cc_index < 0) 1116 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1117 } 1118 1119 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1120 { 1121 struct mt_device *td = hid_get_drvdata(hdev); 1122 char *name; 1123 const char *suffix = NULL; 1124 struct hid_field *field = hi->report->field[0]; 1125 int ret; 1126 1127 if (hi->report->id == td->mt_report_id) { 1128 ret = mt_touch_input_configured(hdev, hi); 1129 if (ret) 1130 return ret; 1131 } 1132 1133 /* 1134 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1135 * for the stylus. Check this first, and then rely on the application 1136 * field. 1137 */ 1138 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1139 suffix = "Pen"; 1140 /* force BTN_STYLUS to allow tablet matching in udev */ 1141 __set_bit(BTN_STYLUS, hi->input->keybit); 1142 } else { 1143 switch (field->application) { 1144 case HID_GD_KEYBOARD: 1145 suffix = "Keyboard"; 1146 break; 1147 case HID_GD_KEYPAD: 1148 suffix = "Keypad"; 1149 break; 1150 case HID_GD_MOUSE: 1151 suffix = "Mouse"; 1152 break; 1153 case HID_DG_STYLUS: 1154 suffix = "Pen"; 1155 /* force BTN_STYLUS to allow tablet matching in udev */ 1156 __set_bit(BTN_STYLUS, hi->input->keybit); 1157 break; 1158 case HID_DG_TOUCHSCREEN: 1159 /* we do not set suffix = "Touchscreen" */ 1160 break; 1161 case HID_DG_TOUCHPAD: 1162 suffix = "Touchpad"; 1163 break; 1164 case HID_GD_SYSTEM_CONTROL: 1165 suffix = "System Control"; 1166 break; 1167 case HID_CP_CONSUMER_CONTROL: 1168 suffix = "Consumer Control"; 1169 break; 1170 case HID_GD_WIRELESS_RADIO_CTLS: 1171 suffix = "Wireless Radio Control"; 1172 break; 1173 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1174 suffix = "Custom Media Keys"; 1175 break; 1176 default: 1177 suffix = "UNKNOWN"; 1178 break; 1179 } 1180 } 1181 1182 if (suffix) { 1183 name = devm_kzalloc(&hi->input->dev, 1184 strlen(hdev->name) + strlen(suffix) + 2, 1185 GFP_KERNEL); 1186 if (name) { 1187 sprintf(name, "%s %s", hdev->name, suffix); 1188 hi->input->name = name; 1189 } 1190 } 1191 1192 return 0; 1193 } 1194 1195 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1196 { 1197 if (field->usage[0].hid != usage || 1198 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1199 return; 1200 1201 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1202 field->flags |= HID_MAIN_ITEM_VARIABLE; 1203 } 1204 1205 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1206 { 1207 struct hid_report *report; 1208 int i; 1209 1210 list_for_each_entry(report, 1211 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1212 list) { 1213 1214 if (!report->maxfield) 1215 continue; 1216 1217 for (i = 0; i < report->maxfield; i++) 1218 if (report->field[i]->maxusage >= 1) 1219 mt_fix_const_field(report->field[i], usage); 1220 } 1221 } 1222 1223 static void mt_release_contacts(struct hid_device *hid) 1224 { 1225 struct hid_input *hidinput; 1226 struct mt_device *td = hid_get_drvdata(hid); 1227 1228 list_for_each_entry(hidinput, &hid->inputs, list) { 1229 struct input_dev *input_dev = hidinput->input; 1230 struct input_mt *mt = input_dev->mt; 1231 int i; 1232 1233 if (mt) { 1234 for (i = 0; i < mt->num_slots; i++) { 1235 input_mt_slot(input_dev, i); 1236 input_mt_report_slot_state(input_dev, 1237 MT_TOOL_FINGER, 1238 false); 1239 } 1240 input_mt_sync_frame(input_dev); 1241 input_sync(input_dev); 1242 } 1243 } 1244 1245 td->num_received = 0; 1246 } 1247 1248 static void mt_expired_timeout(unsigned long arg) 1249 { 1250 struct hid_device *hdev = (void *)arg; 1251 struct mt_device *td = hid_get_drvdata(hdev); 1252 1253 /* 1254 * An input report came in just before we release the sticky fingers, 1255 * it will take care of the sticky fingers. 1256 */ 1257 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1258 return; 1259 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1260 mt_release_contacts(hdev); 1261 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1262 } 1263 1264 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1265 { 1266 int ret, i; 1267 struct mt_device *td; 1268 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1269 1270 for (i = 0; mt_classes[i].name ; i++) { 1271 if (id->driver_data == mt_classes[i].name) { 1272 mtclass = &(mt_classes[i]); 1273 break; 1274 } 1275 } 1276 1277 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1278 if (!td) { 1279 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1280 return -ENOMEM; 1281 } 1282 td->mtclass = *mtclass; 1283 td->inputmode = -1; 1284 td->maxcontact_report_id = -1; 1285 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1286 td->cc_index = -1; 1287 td->mt_report_id = -1; 1288 hid_set_drvdata(hdev, td); 1289 1290 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1291 GFP_KERNEL); 1292 if (!td->fields) { 1293 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1294 return -ENOMEM; 1295 } 1296 1297 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1298 td->serial_maybe = true; 1299 1300 /* 1301 * Store the initial quirk state 1302 */ 1303 td->initial_quirks = hdev->quirks; 1304 1305 /* This allows the driver to correctly support devices 1306 * that emit events over several HID messages. 1307 */ 1308 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1309 1310 /* 1311 * This allows the driver to handle different input sensors 1312 * that emits events through different reports on the same HID 1313 * device. 1314 */ 1315 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1316 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1317 1318 /* 1319 * Some multitouch screens do not like to be polled for input 1320 * reports. Fortunately, the Win8 spec says that all touches 1321 * should be sent during each report, making the initialization 1322 * of input reports unnecessary. For Win7 devices, well, let's hope 1323 * they will still be happy (this is only be a problem if a touch 1324 * was already there while probing the device). 1325 * 1326 * In addition some touchpads do not behave well if we read 1327 * all feature reports from them. Instead we prevent 1328 * initial report fetching and then selectively fetch each 1329 * report we are interested in. 1330 */ 1331 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1332 1333 setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev); 1334 1335 ret = hid_parse(hdev); 1336 if (ret != 0) 1337 return ret; 1338 1339 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1340 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1341 1342 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1343 if (ret) 1344 return ret; 1345 1346 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1347 if (ret) 1348 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1349 hdev->name); 1350 1351 mt_set_maxcontacts(hdev); 1352 mt_set_input_mode(hdev); 1353 1354 /* release .fields memory as it is not used anymore */ 1355 devm_kfree(&hdev->dev, td->fields); 1356 td->fields = NULL; 1357 1358 return 0; 1359 } 1360 1361 #ifdef CONFIG_PM 1362 static int mt_reset_resume(struct hid_device *hdev) 1363 { 1364 mt_release_contacts(hdev); 1365 mt_set_maxcontacts(hdev); 1366 mt_set_input_mode(hdev); 1367 return 0; 1368 } 1369 1370 static int mt_resume(struct hid_device *hdev) 1371 { 1372 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1373 * It should be safe to send it to other devices too. 1374 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1375 1376 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1377 1378 return 0; 1379 } 1380 #endif 1381 1382 static void mt_remove(struct hid_device *hdev) 1383 { 1384 struct mt_device *td = hid_get_drvdata(hdev); 1385 1386 del_timer_sync(&td->release_timer); 1387 1388 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1389 hid_hw_stop(hdev); 1390 hdev->quirks = td->initial_quirks; 1391 } 1392 1393 /* 1394 * This list contains only: 1395 * - VID/PID of products not working with the default multitouch handling 1396 * - 2 generic rules. 1397 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1398 */ 1399 static const struct hid_device_id mt_devices[] = { 1400 1401 /* 3M panels */ 1402 { .driver_data = MT_CLS_3M, 1403 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1404 USB_DEVICE_ID_3M1968) }, 1405 { .driver_data = MT_CLS_3M, 1406 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1407 USB_DEVICE_ID_3M2256) }, 1408 { .driver_data = MT_CLS_3M, 1409 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1410 USB_DEVICE_ID_3M3266) }, 1411 1412 /* Alps devices */ 1413 { .driver_data = MT_CLS_WIN_8_DUAL, 1414 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1415 USB_VENDOR_ID_ALPS_JP, 1416 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1417 { .driver_data = MT_CLS_WIN_8_DUAL, 1418 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1419 USB_VENDOR_ID_ALPS_JP, 1420 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1421 1422 /* Anton devices */ 1423 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1424 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1425 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1426 1427 /* Asus T304UA */ 1428 { .driver_data = MT_CLS_ASUS, 1429 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1430 USB_VENDOR_ID_ASUSTEK, 1431 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1432 1433 /* Atmel panels */ 1434 { .driver_data = MT_CLS_SERIAL, 1435 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1436 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1437 1438 /* Baanto multitouch devices */ 1439 { .driver_data = MT_CLS_NSMU, 1440 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1441 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1442 1443 /* Cando panels */ 1444 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1445 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1446 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1447 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1448 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1449 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1450 1451 /* Chunghwa Telecom touch panels */ 1452 { .driver_data = MT_CLS_NSMU, 1453 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1454 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1455 1456 /* CJTouch panels */ 1457 { .driver_data = MT_CLS_NSMU, 1458 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1459 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1460 { .driver_data = MT_CLS_NSMU, 1461 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1462 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1463 1464 /* CVTouch panels */ 1465 { .driver_data = MT_CLS_NSMU, 1466 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1467 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1468 1469 /* eGalax devices (resistive) */ 1470 { .driver_data = MT_CLS_EGALAX, 1471 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1472 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1473 { .driver_data = MT_CLS_EGALAX, 1474 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1475 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1476 1477 /* eGalax devices (capacitive) */ 1478 { .driver_data = MT_CLS_EGALAX_SERIAL, 1479 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1480 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1481 { .driver_data = MT_CLS_EGALAX, 1482 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1483 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1484 { .driver_data = MT_CLS_EGALAX_SERIAL, 1485 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1486 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1487 { .driver_data = MT_CLS_EGALAX_SERIAL, 1488 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1489 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1490 { .driver_data = MT_CLS_EGALAX_SERIAL, 1491 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1492 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1493 { .driver_data = MT_CLS_EGALAX_SERIAL, 1494 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1495 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1496 { .driver_data = MT_CLS_EGALAX, 1497 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1498 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1499 { .driver_data = MT_CLS_EGALAX, 1500 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1501 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1502 { .driver_data = MT_CLS_EGALAX_SERIAL, 1503 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1504 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1505 { .driver_data = MT_CLS_EGALAX, 1506 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1507 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1508 { .driver_data = MT_CLS_EGALAX, 1509 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1510 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1511 { .driver_data = MT_CLS_EGALAX, 1512 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1513 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1514 { .driver_data = MT_CLS_EGALAX, 1515 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1516 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1517 { .driver_data = MT_CLS_EGALAX_SERIAL, 1518 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1519 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1520 { .driver_data = MT_CLS_EGALAX_SERIAL, 1521 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1522 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1523 { .driver_data = MT_CLS_EGALAX_SERIAL, 1524 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1525 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1526 1527 /* Elitegroup panel */ 1528 { .driver_data = MT_CLS_SERIAL, 1529 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1530 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1531 1532 /* Flatfrog Panels */ 1533 { .driver_data = MT_CLS_FLATFROG, 1534 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1535 USB_DEVICE_ID_MULTITOUCH_3200) }, 1536 1537 /* FocalTech Panels */ 1538 { .driver_data = MT_CLS_SERIAL, 1539 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1540 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1541 1542 /* GeneralTouch panel */ 1543 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1544 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1545 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1546 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1547 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1548 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1549 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1550 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1551 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1552 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1553 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1554 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1555 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1556 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1557 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1558 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1559 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1560 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1561 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1562 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1563 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1564 1565 /* Gametel game controller */ 1566 { .driver_data = MT_CLS_NSMU, 1567 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1568 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1569 1570 /* GoodTouch panels */ 1571 { .driver_data = MT_CLS_NSMU, 1572 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1573 USB_DEVICE_ID_GOODTOUCH_000f) }, 1574 1575 /* Hanvon panels */ 1576 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1577 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1578 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1579 1580 /* Ilitek dual touch panel */ 1581 { .driver_data = MT_CLS_NSMU, 1582 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1583 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1584 1585 /* LG Melfas panel */ 1586 { .driver_data = MT_CLS_LG, 1587 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1588 USB_DEVICE_ID_LG_MELFAS_MT) }, 1589 1590 /* MosArt panels */ 1591 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1592 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1593 USB_DEVICE_ID_ASUS_T91MT)}, 1594 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1595 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1596 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1597 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1598 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1599 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1600 1601 /* Panasonic panels */ 1602 { .driver_data = MT_CLS_PANASONIC, 1603 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1604 USB_DEVICE_ID_PANABOARD_UBT780) }, 1605 { .driver_data = MT_CLS_PANASONIC, 1606 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1607 USB_DEVICE_ID_PANABOARD_UBT880) }, 1608 1609 /* Novatek Panel */ 1610 { .driver_data = MT_CLS_NSMU, 1611 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1612 USB_DEVICE_ID_NOVATEK_PCT) }, 1613 1614 /* Ntrig Panel */ 1615 { .driver_data = MT_CLS_NSMU, 1616 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1617 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1618 1619 /* PixArt optical touch screen */ 1620 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1621 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1622 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1623 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1624 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1625 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1626 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1627 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1628 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1629 1630 /* PixCir-based panels */ 1631 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1632 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1633 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1634 1635 /* Quanta-based panels */ 1636 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1637 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1638 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1639 1640 /* Stantum panels */ 1641 { .driver_data = MT_CLS_CONFIDENCE, 1642 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1643 USB_DEVICE_ID_MTP_STM)}, 1644 1645 /* TopSeed panels */ 1646 { .driver_data = MT_CLS_TOPSEED, 1647 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1648 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1649 1650 /* Touch International panels */ 1651 { .driver_data = MT_CLS_NSMU, 1652 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1653 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1654 1655 /* Unitec panels */ 1656 { .driver_data = MT_CLS_NSMU, 1657 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1658 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1659 { .driver_data = MT_CLS_NSMU, 1660 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1661 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1662 1663 /* VTL panels */ 1664 { .driver_data = MT_CLS_VTL, 1665 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1666 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1667 1668 /* Wistron panels */ 1669 { .driver_data = MT_CLS_NSMU, 1670 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1671 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1672 1673 /* XAT */ 1674 { .driver_data = MT_CLS_NSMU, 1675 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1676 USB_DEVICE_ID_XAT_CSR) }, 1677 1678 /* Xiroku */ 1679 { .driver_data = MT_CLS_NSMU, 1680 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1681 USB_DEVICE_ID_XIROKU_SPX) }, 1682 { .driver_data = MT_CLS_NSMU, 1683 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1684 USB_DEVICE_ID_XIROKU_MPX) }, 1685 { .driver_data = MT_CLS_NSMU, 1686 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1687 USB_DEVICE_ID_XIROKU_CSR) }, 1688 { .driver_data = MT_CLS_NSMU, 1689 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1690 USB_DEVICE_ID_XIROKU_SPX1) }, 1691 { .driver_data = MT_CLS_NSMU, 1692 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1693 USB_DEVICE_ID_XIROKU_MPX1) }, 1694 { .driver_data = MT_CLS_NSMU, 1695 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1696 USB_DEVICE_ID_XIROKU_CSR1) }, 1697 { .driver_data = MT_CLS_NSMU, 1698 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1699 USB_DEVICE_ID_XIROKU_SPX2) }, 1700 { .driver_data = MT_CLS_NSMU, 1701 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1702 USB_DEVICE_ID_XIROKU_MPX2) }, 1703 { .driver_data = MT_CLS_NSMU, 1704 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1705 USB_DEVICE_ID_XIROKU_CSR2) }, 1706 1707 /* Google MT devices */ 1708 { .driver_data = MT_CLS_GOOGLE, 1709 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 1710 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 1711 1712 /* Generic MT device */ 1713 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1714 1715 /* Generic Win 8 certified MT device */ 1716 { .driver_data = MT_CLS_WIN_8, 1717 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1718 HID_ANY_ID, HID_ANY_ID) }, 1719 { } 1720 }; 1721 MODULE_DEVICE_TABLE(hid, mt_devices); 1722 1723 static const struct hid_usage_id mt_grabbed_usages[] = { 1724 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1725 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1726 }; 1727 1728 static struct hid_driver mt_driver = { 1729 .name = "hid-multitouch", 1730 .id_table = mt_devices, 1731 .probe = mt_probe, 1732 .remove = mt_remove, 1733 .input_mapping = mt_input_mapping, 1734 .input_mapped = mt_input_mapped, 1735 .input_configured = mt_input_configured, 1736 .feature_mapping = mt_feature_mapping, 1737 .usage_table = mt_grabbed_usages, 1738 .event = mt_event, 1739 .report = mt_report, 1740 #ifdef CONFIG_PM 1741 .reset_resume = mt_reset_resume, 1742 .resume = mt_resume, 1743 #endif 1744 }; 1745 module_hid_driver(mt_driver); 1746