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/jiffies.h> 47 #include <linux/string.h> 48 #include <linux/timer.h> 49 50 51 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 52 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 53 MODULE_DESCRIPTION("HID multitouch panels"); 54 MODULE_LICENSE("GPL"); 55 56 #include "hid-ids.h" 57 58 /* quirks to control the device */ 59 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) 60 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) 61 #define MT_QUIRK_CYPRESS BIT(2) 62 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) 63 #define MT_QUIRK_ALWAYS_VALID BIT(4) 64 #define MT_QUIRK_VALID_IS_INRANGE BIT(5) 65 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) 66 #define MT_QUIRK_CONFIDENCE BIT(7) 67 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) 68 #define MT_QUIRK_NO_AREA BIT(9) 69 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10) 70 #define MT_QUIRK_HOVERING BIT(11) 71 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) 72 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13) 73 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) 74 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) 75 #define MT_QUIRK_STICKY_FINGERS BIT(16) 76 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) 77 78 #define MT_INPUTMODE_TOUCHSCREEN 0x02 79 #define MT_INPUTMODE_TOUCHPAD 0x03 80 81 #define MT_BUTTONTYPE_CLICKPAD 0 82 83 #define MT_IO_FLAGS_RUNNING 0 84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1 85 #define MT_IO_FLAGS_PENDING_SLOTS 2 86 87 struct mt_slot { 88 __s32 x, y, cx, cy, p, w, h, a; 89 __s32 contactid; /* the device ContactID assigned to this slot */ 90 bool touch_state; /* is the touch valid? */ 91 bool inrange_state; /* is the finger in proximity of the sensor? */ 92 bool confidence_state; /* is the touch made by a finger? */ 93 bool has_azimuth; /* the contact reports azimuth */ 94 }; 95 96 struct mt_class { 97 __s32 name; /* MT_CLS */ 98 __s32 quirks; 99 __s32 sn_move; /* Signal/noise ratio for move events */ 100 __s32 sn_width; /* Signal/noise ratio for width events */ 101 __s32 sn_height; /* Signal/noise ratio for height events */ 102 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 103 __u8 maxcontacts; 104 bool is_indirect; /* true for touchpads */ 105 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ 106 }; 107 108 struct mt_fields { 109 unsigned usages[HID_MAX_FIELDS]; 110 unsigned int length; 111 }; 112 113 struct mt_device { 114 struct mt_slot curdata; /* placeholder of incoming data */ 115 struct mt_class mtclass; /* our mt device class */ 116 struct timer_list release_timer; /* to release sticky fingers */ 117 struct hid_device *hdev; /* hid_device we're attached to */ 118 struct mt_fields *fields; /* temporary placeholder for storing the 119 multitouch fields */ 120 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ 121 int cc_index; /* contact count field index in the report */ 122 int cc_value_index; /* contact count value index in the field */ 123 int scantime_index; /* scantime field index in the report */ 124 int scantime_val_index; /* scantime value index in the field */ 125 int prev_scantime; /* scantime reported in the previous packet */ 126 int left_button_state; /* left button state */ 127 unsigned last_slot_field; /* the last field of a slot */ 128 unsigned mt_report_id; /* the report ID of the multitouch device */ 129 unsigned long initial_quirks; /* initial quirks state */ 130 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */ 131 __s16 inputmode_index; /* InputMode HID feature index in the report */ 132 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature, 133 -1 if non-existent */ 134 __u8 inputmode_value; /* InputMode HID feature value */ 135 __u8 num_received; /* how many contacts we received */ 136 __u8 num_expected; /* expected last contact index */ 137 __u8 maxcontacts; 138 __u8 touches_by_report; /* how many touches are present in one report: 139 * 1 means we should use a serial protocol 140 * > 1 means hybrid (multitouch) protocol */ 141 __u8 buttons_count; /* number of physical buttons per touchpad */ 142 bool is_buttonpad; /* is this device a button pad? */ 143 bool serial_maybe; /* need to check for serial protocol */ 144 bool curvalid; /* is the current contact valid? */ 145 unsigned mt_flags; /* flags to pass to input-mt */ 146 __s32 dev_time; /* the scan time provided by the device */ 147 unsigned long jiffies; /* the frame's jiffies */ 148 int timestamp; /* the timestamp to be sent */ 149 }; 150 151 static void mt_post_parse_default_settings(struct mt_device *td); 152 static void mt_post_parse(struct mt_device *td); 153 154 /* classes of device behavior */ 155 #define MT_CLS_DEFAULT 0x0001 156 157 #define MT_CLS_SERIAL 0x0002 158 #define MT_CLS_CONFIDENCE 0x0003 159 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 160 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 161 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 162 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 163 /* reserved 0x0008 */ 164 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 165 #define MT_CLS_NSMU 0x000a 166 /* reserved 0x0010 */ 167 /* reserved 0x0011 */ 168 #define MT_CLS_WIN_8 0x0012 169 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013 170 #define MT_CLS_WIN_8_DUAL 0x0014 171 172 /* vendor specific classes */ 173 #define MT_CLS_3M 0x0101 174 /* reserved 0x0102 */ 175 #define MT_CLS_EGALAX 0x0103 176 #define MT_CLS_EGALAX_SERIAL 0x0104 177 #define MT_CLS_TOPSEED 0x0105 178 #define MT_CLS_PANASONIC 0x0106 179 #define MT_CLS_FLATFROG 0x0107 180 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 181 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 182 #define MT_CLS_LG 0x010a 183 #define MT_CLS_ASUS 0x010b 184 #define MT_CLS_VTL 0x0110 185 #define MT_CLS_GOOGLE 0x0111 186 187 #define MT_DEFAULT_MAXCONTACT 10 188 #define MT_MAX_MAXCONTACT 250 189 190 /* 191 * Resync device and local timestamps after that many microseconds without 192 * receiving data. 193 */ 194 #define MAX_TIMESTAMP_INTERVAL 1000000 195 196 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 197 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 198 199 /* 200 * these device-dependent functions determine what slot corresponds 201 * to a valid contact that was just read. 202 */ 203 204 static int cypress_compute_slot(struct mt_device *td) 205 { 206 if (td->curdata.contactid != 0 || td->num_received == 0) 207 return td->curdata.contactid; 208 else 209 return -1; 210 } 211 212 static struct mt_class mt_classes[] = { 213 { .name = MT_CLS_DEFAULT, 214 .quirks = MT_QUIRK_ALWAYS_VALID | 215 MT_QUIRK_CONTACT_CNT_ACCURATE }, 216 { .name = MT_CLS_NSMU, 217 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 218 { .name = MT_CLS_SERIAL, 219 .quirks = MT_QUIRK_ALWAYS_VALID}, 220 { .name = MT_CLS_CONFIDENCE, 221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 222 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 223 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 224 MT_QUIRK_SLOT_IS_CONTACTID }, 225 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 226 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 227 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 228 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 229 .quirks = MT_QUIRK_VALID_IS_INRANGE | 230 MT_QUIRK_SLOT_IS_CONTACTID, 231 .maxcontacts = 2 }, 232 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 233 .quirks = MT_QUIRK_VALID_IS_INRANGE | 234 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 235 .maxcontacts = 2 }, 236 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 237 .quirks = MT_QUIRK_VALID_IS_INRANGE | 238 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 239 { .name = MT_CLS_WIN_8, 240 .quirks = MT_QUIRK_ALWAYS_VALID | 241 MT_QUIRK_IGNORE_DUPLICATES | 242 MT_QUIRK_HOVERING | 243 MT_QUIRK_CONTACT_CNT_ACCURATE | 244 MT_QUIRK_STICKY_FINGERS }, 245 { .name = MT_CLS_EXPORT_ALL_INPUTS, 246 .quirks = MT_QUIRK_ALWAYS_VALID | 247 MT_QUIRK_CONTACT_CNT_ACCURATE, 248 .export_all_inputs = true }, 249 { .name = MT_CLS_WIN_8_DUAL, 250 .quirks = MT_QUIRK_ALWAYS_VALID | 251 MT_QUIRK_IGNORE_DUPLICATES | 252 MT_QUIRK_HOVERING | 253 MT_QUIRK_CONTACT_CNT_ACCURATE, 254 .export_all_inputs = true }, 255 256 /* 257 * vendor specific classes 258 */ 259 { .name = MT_CLS_3M, 260 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 261 MT_QUIRK_SLOT_IS_CONTACTID | 262 MT_QUIRK_TOUCH_SIZE_SCALING, 263 .sn_move = 2048, 264 .sn_width = 128, 265 .sn_height = 128, 266 .maxcontacts = 60, 267 }, 268 { .name = MT_CLS_EGALAX, 269 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 270 MT_QUIRK_VALID_IS_INRANGE, 271 .sn_move = 4096, 272 .sn_pressure = 32, 273 }, 274 { .name = MT_CLS_EGALAX_SERIAL, 275 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 276 MT_QUIRK_ALWAYS_VALID, 277 .sn_move = 4096, 278 .sn_pressure = 32, 279 }, 280 { .name = MT_CLS_TOPSEED, 281 .quirks = MT_QUIRK_ALWAYS_VALID, 282 .is_indirect = true, 283 .maxcontacts = 2, 284 }, 285 { .name = MT_CLS_PANASONIC, 286 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 287 .maxcontacts = 4 }, 288 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS, 289 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 290 MT_QUIRK_VALID_IS_INRANGE | 291 MT_QUIRK_SLOT_IS_CONTACTID, 292 .maxcontacts = 2 293 }, 294 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 295 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 296 MT_QUIRK_SLOT_IS_CONTACTID 297 }, 298 299 { .name = MT_CLS_FLATFROG, 300 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 301 MT_QUIRK_NO_AREA, 302 .sn_move = 2048, 303 .maxcontacts = 40, 304 }, 305 { .name = MT_CLS_LG, 306 .quirks = MT_QUIRK_ALWAYS_VALID | 307 MT_QUIRK_FIX_CONST_CONTACT_ID | 308 MT_QUIRK_IGNORE_DUPLICATES | 309 MT_QUIRK_HOVERING | 310 MT_QUIRK_CONTACT_CNT_ACCURATE }, 311 { .name = MT_CLS_ASUS, 312 .quirks = MT_QUIRK_ALWAYS_VALID | 313 MT_QUIRK_CONTACT_CNT_ACCURATE | 314 MT_QUIRK_ASUS_CUSTOM_UP }, 315 { .name = MT_CLS_VTL, 316 .quirks = MT_QUIRK_ALWAYS_VALID | 317 MT_QUIRK_CONTACT_CNT_ACCURATE | 318 MT_QUIRK_FORCE_GET_FEATURE, 319 }, 320 { .name = MT_CLS_GOOGLE, 321 .quirks = MT_QUIRK_ALWAYS_VALID | 322 MT_QUIRK_CONTACT_CNT_ACCURATE | 323 MT_QUIRK_SLOT_IS_CONTACTID | 324 MT_QUIRK_HOVERING 325 }, 326 { } 327 }; 328 329 static ssize_t mt_show_quirks(struct device *dev, 330 struct device_attribute *attr, 331 char *buf) 332 { 333 struct hid_device *hdev = to_hid_device(dev); 334 struct mt_device *td = hid_get_drvdata(hdev); 335 336 return sprintf(buf, "%u\n", td->mtclass.quirks); 337 } 338 339 static ssize_t mt_set_quirks(struct device *dev, 340 struct device_attribute *attr, 341 const char *buf, size_t count) 342 { 343 struct hid_device *hdev = to_hid_device(dev); 344 struct mt_device *td = hid_get_drvdata(hdev); 345 346 unsigned long val; 347 348 if (kstrtoul(buf, 0, &val)) 349 return -EINVAL; 350 351 td->mtclass.quirks = val; 352 353 if (td->cc_index < 0) 354 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 355 356 return count; 357 } 358 359 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 360 361 static struct attribute *sysfs_attrs[] = { 362 &dev_attr_quirks.attr, 363 NULL 364 }; 365 366 static const struct attribute_group mt_attribute_group = { 367 .attrs = sysfs_attrs 368 }; 369 370 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) 371 { 372 struct mt_device *td = hid_get_drvdata(hdev); 373 int ret, size = hid_report_len(report); 374 u8 *buf; 375 376 /* 377 * Do not fetch the feature report if the device has been explicitly 378 * marked as non-capable. 379 */ 380 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS) 381 return; 382 383 buf = hid_alloc_report_buf(report, GFP_KERNEL); 384 if (!buf) 385 return; 386 387 ret = hid_hw_raw_request(hdev, report->id, buf, size, 388 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 389 if (ret < 0) { 390 dev_warn(&hdev->dev, "failed to fetch feature %d\n", 391 report->id); 392 } else { 393 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, 394 size, 0); 395 if (ret) 396 dev_warn(&hdev->dev, "failed to report feature\n"); 397 } 398 399 kfree(buf); 400 } 401 402 static void mt_feature_mapping(struct hid_device *hdev, 403 struct hid_field *field, struct hid_usage *usage) 404 { 405 struct mt_device *td = hid_get_drvdata(hdev); 406 407 switch (usage->hid) { 408 case HID_DG_INPUTMODE: 409 /* Ignore if value index is out of bounds. */ 410 if (usage->usage_index >= field->report_count) { 411 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); 412 break; 413 } 414 415 if (td->inputmode < 0) { 416 td->inputmode = field->report->id; 417 td->inputmode_index = usage->usage_index; 418 } else { 419 /* 420 * Some elan panels wrongly declare 2 input mode 421 * features, and silently ignore when we set the 422 * value in the second field. Skip the second feature 423 * and hope for the best. 424 */ 425 dev_info(&hdev->dev, 426 "Ignoring the extra HID_DG_INPUTMODE\n"); 427 } 428 429 break; 430 case HID_DG_CONTACTMAX: 431 mt_get_feature(hdev, field->report); 432 433 td->maxcontact_report_id = field->report->id; 434 td->maxcontacts = field->value[0]; 435 if (!td->maxcontacts && 436 field->logical_maximum <= MT_MAX_MAXCONTACT) 437 td->maxcontacts = field->logical_maximum; 438 if (td->mtclass.maxcontacts) 439 /* check if the maxcontacts is given by the class */ 440 td->maxcontacts = td->mtclass.maxcontacts; 441 442 break; 443 case HID_DG_BUTTONTYPE: 444 if (usage->usage_index >= field->report_count) { 445 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); 446 break; 447 } 448 449 mt_get_feature(hdev, field->report); 450 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) 451 td->is_buttonpad = true; 452 453 break; 454 case 0xff0000c5: 455 /* Retrieve the Win8 blob once to enable some devices */ 456 if (usage->usage_index == 0) 457 mt_get_feature(hdev, field->report); 458 break; 459 } 460 } 461 462 static void set_abs(struct input_dev *input, unsigned int code, 463 struct hid_field *field, int snratio) 464 { 465 int fmin = field->logical_minimum; 466 int fmax = field->logical_maximum; 467 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 468 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 469 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code)); 470 } 471 472 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 473 struct hid_input *hi) 474 { 475 struct mt_fields *f = td->fields; 476 477 if (f->length >= HID_MAX_FIELDS) 478 return; 479 480 f->usages[f->length++] = usage->hid; 481 } 482 483 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 484 struct hid_field *field, struct hid_usage *usage, 485 unsigned long **bit, int *max) 486 { 487 struct mt_device *td = hid_get_drvdata(hdev); 488 struct mt_class *cls = &td->mtclass; 489 int code; 490 struct hid_usage *prev_usage = NULL; 491 492 if (field->application == HID_DG_TOUCHSCREEN) 493 td->mt_flags |= INPUT_MT_DIRECT; 494 495 /* 496 * Model touchscreens providing buttons as touchpads. 497 */ 498 if (field->application == HID_DG_TOUCHPAD || 499 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { 500 td->mt_flags |= INPUT_MT_POINTER; 501 td->inputmode_value = MT_INPUTMODE_TOUCHPAD; 502 } 503 504 /* count the buttons on touchpads */ 505 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 506 td->buttons_count++; 507 508 if (usage->usage_index) 509 prev_usage = &field->usage[usage->usage_index - 1]; 510 511 switch (usage->hid & HID_USAGE_PAGE) { 512 513 case HID_UP_GENDESK: 514 switch (usage->hid) { 515 case HID_GD_X: 516 if (prev_usage && (prev_usage->hid == usage->hid)) { 517 hid_map_usage(hi, usage, bit, max, 518 EV_ABS, ABS_MT_TOOL_X); 519 set_abs(hi->input, ABS_MT_TOOL_X, field, 520 cls->sn_move); 521 } else { 522 hid_map_usage(hi, usage, bit, max, 523 EV_ABS, ABS_MT_POSITION_X); 524 set_abs(hi->input, ABS_MT_POSITION_X, field, 525 cls->sn_move); 526 } 527 528 mt_store_field(usage, td, hi); 529 return 1; 530 case HID_GD_Y: 531 if (prev_usage && (prev_usage->hid == usage->hid)) { 532 hid_map_usage(hi, usage, bit, max, 533 EV_ABS, ABS_MT_TOOL_Y); 534 set_abs(hi->input, ABS_MT_TOOL_Y, field, 535 cls->sn_move); 536 } else { 537 hid_map_usage(hi, usage, bit, max, 538 EV_ABS, ABS_MT_POSITION_Y); 539 set_abs(hi->input, ABS_MT_POSITION_Y, field, 540 cls->sn_move); 541 } 542 543 mt_store_field(usage, td, hi); 544 return 1; 545 } 546 return 0; 547 548 case HID_UP_DIGITIZER: 549 switch (usage->hid) { 550 case HID_DG_INRANGE: 551 if (cls->quirks & MT_QUIRK_HOVERING) { 552 hid_map_usage(hi, usage, bit, max, 553 EV_ABS, ABS_MT_DISTANCE); 554 input_set_abs_params(hi->input, 555 ABS_MT_DISTANCE, 0, 1, 0, 0); 556 } 557 mt_store_field(usage, td, hi); 558 return 1; 559 case HID_DG_CONFIDENCE: 560 if ((cls->name == MT_CLS_WIN_8 || 561 cls->name == MT_CLS_WIN_8_DUAL) && 562 field->application == HID_DG_TOUCHPAD) 563 cls->quirks |= MT_QUIRK_CONFIDENCE; 564 mt_store_field(usage, td, hi); 565 return 1; 566 case HID_DG_TIPSWITCH: 567 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 568 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 569 mt_store_field(usage, td, hi); 570 return 1; 571 case HID_DG_CONTACTID: 572 mt_store_field(usage, td, hi); 573 td->touches_by_report++; 574 td->mt_report_id = field->report->id; 575 return 1; 576 case HID_DG_WIDTH: 577 hid_map_usage(hi, usage, bit, max, 578 EV_ABS, ABS_MT_TOUCH_MAJOR); 579 if (!(cls->quirks & MT_QUIRK_NO_AREA)) 580 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 581 cls->sn_width); 582 mt_store_field(usage, td, hi); 583 return 1; 584 case HID_DG_HEIGHT: 585 hid_map_usage(hi, usage, bit, max, 586 EV_ABS, ABS_MT_TOUCH_MINOR); 587 if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 588 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 589 cls->sn_height); 590 591 /* 592 * Only set ABS_MT_ORIENTATION if it is not 593 * already set by the HID_DG_AZIMUTH usage. 594 */ 595 if (!test_bit(ABS_MT_ORIENTATION, 596 hi->input->absbit)) 597 input_set_abs_params(hi->input, 598 ABS_MT_ORIENTATION, 0, 1, 0, 0); 599 } 600 mt_store_field(usage, td, hi); 601 return 1; 602 case HID_DG_TIPPRESSURE: 603 hid_map_usage(hi, usage, bit, max, 604 EV_ABS, ABS_MT_PRESSURE); 605 set_abs(hi->input, ABS_MT_PRESSURE, field, 606 cls->sn_pressure); 607 mt_store_field(usage, td, hi); 608 return 1; 609 case HID_DG_SCANTIME: 610 hid_map_usage(hi, usage, bit, max, 611 EV_MSC, MSC_TIMESTAMP); 612 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP); 613 mt_store_field(usage, td, hi); 614 /* Ignore if indexes are out of bounds. */ 615 if (field->index >= field->report->maxfield || 616 usage->usage_index >= field->report_count) 617 return 1; 618 td->scantime_index = field->index; 619 td->scantime_val_index = usage->usage_index; 620 return 1; 621 case HID_DG_CONTACTCOUNT: 622 /* Ignore if indexes are out of bounds. */ 623 if (field->index >= field->report->maxfield || 624 usage->usage_index >= field->report_count) 625 return 1; 626 td->cc_index = field->index; 627 td->cc_value_index = usage->usage_index; 628 return 1; 629 case HID_DG_AZIMUTH: 630 hid_map_usage(hi, usage, bit, max, 631 EV_ABS, ABS_MT_ORIENTATION); 632 /* 633 * Azimuth has the range of [0, MAX) representing a full 634 * revolution. Set ABS_MT_ORIENTATION to a quarter of 635 * MAX according the definition of ABS_MT_ORIENTATION 636 */ 637 input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 638 -field->logical_maximum / 4, 639 field->logical_maximum / 4, 640 cls->sn_move ? 641 field->logical_maximum / cls->sn_move : 0, 0); 642 mt_store_field(usage, td, hi); 643 return 1; 644 case HID_DG_CONTACTMAX: 645 /* we don't set td->last_slot_field as contactcount and 646 * contact max are global to the report */ 647 return -1; 648 case HID_DG_TOUCH: 649 /* Legacy devices use TIPSWITCH and not TOUCH. 650 * Let's just ignore this field. */ 651 return -1; 652 } 653 /* let hid-input decide for the others */ 654 return 0; 655 656 case HID_UP_BUTTON: 657 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 658 /* 659 * MS PTP spec says that external buttons left and right have 660 * usages 2 and 3. 661 */ 662 if ((cls->name == MT_CLS_WIN_8 || 663 cls->name == MT_CLS_WIN_8_DUAL) && 664 field->application == HID_DG_TOUCHPAD && 665 (usage->hid & HID_USAGE) > 1) 666 code--; 667 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 668 input_set_capability(hi->input, EV_KEY, code); 669 return 1; 670 671 case 0xff000000: 672 /* we do not want to map these: no input-oriented meaning */ 673 return -1; 674 } 675 676 return 0; 677 } 678 679 static int mt_compute_slot(struct mt_device *td, struct input_dev *input) 680 { 681 __s32 quirks = td->mtclass.quirks; 682 683 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 684 return td->curdata.contactid; 685 686 if (quirks & MT_QUIRK_CYPRESS) 687 return cypress_compute_slot(td); 688 689 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 690 return td->num_received; 691 692 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 693 return td->curdata.contactid - 1; 694 695 return input_mt_get_slot_by_key(input, td->curdata.contactid); 696 } 697 698 /* 699 * this function is called when a whole contact has been processed, 700 * so that it can assign it to a slot and store the data there 701 */ 702 static void mt_complete_slot(struct mt_device *td, struct input_dev *input) 703 { 704 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && 705 td->num_received >= td->num_expected) 706 return; 707 708 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { 709 int active; 710 int slotnum = mt_compute_slot(td, input); 711 struct mt_slot *s = &td->curdata; 712 struct input_mt *mt = input->mt; 713 714 if (slotnum < 0 || slotnum >= td->maxcontacts) 715 return; 716 717 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { 718 struct input_mt_slot *slot = &mt->slots[slotnum]; 719 if (input_mt_is_active(slot) && 720 input_mt_is_used(mt, slot)) 721 return; 722 } 723 724 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) 725 s->confidence_state = 1; 726 active = (s->touch_state || s->inrange_state) && 727 s->confidence_state; 728 729 input_mt_slot(input, slotnum); 730 input_mt_report_slot_state(input, MT_TOOL_FINGER, active); 731 if (active) { 732 /* this finger is in proximity of the sensor */ 733 int wide = (s->w > s->h); 734 int major = max(s->w, s->h); 735 int minor = min(s->w, s->h); 736 int orientation = wide; 737 738 if (s->has_azimuth) 739 orientation = s->a; 740 741 /* 742 * divided by two to match visual scale of touch 743 * for devices with this quirk 744 */ 745 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { 746 major = major >> 1; 747 minor = minor >> 1; 748 } 749 750 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 751 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 752 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); 753 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); 754 input_event(input, EV_ABS, ABS_MT_DISTANCE, 755 !s->touch_state); 756 input_event(input, EV_ABS, ABS_MT_ORIENTATION, 757 orientation); 758 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 759 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 760 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 761 762 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 763 } 764 } 765 766 td->num_received++; 767 } 768 769 /* 770 * this function is called when a whole packet has been received and processed, 771 * so that it can decide what to send to the input layer. 772 */ 773 static void mt_sync_frame(struct mt_device *td, struct input_dev *input) 774 { 775 __s32 cls = td->mtclass.name; 776 777 if (cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) 778 input_event(input, EV_KEY, BTN_LEFT, td->left_button_state); 779 780 input_mt_sync_frame(input); 781 input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp); 782 input_sync(input); 783 td->num_received = 0; 784 td->left_button_state = 0; 785 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags)) 786 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 787 else 788 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags); 789 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); 790 } 791 792 static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field, 793 __s32 value) 794 { 795 long delta = value - td->dev_time; 796 unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies); 797 798 td->jiffies = jiffies; 799 td->dev_time = value; 800 801 if (delta < 0) 802 delta += field->logical_maximum; 803 804 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */ 805 delta *= 100; 806 807 if (jdelta > MAX_TIMESTAMP_INTERVAL) 808 /* No data received for a while, resync the timestamp. */ 809 return 0; 810 else 811 return td->timestamp + delta; 812 } 813 814 static int mt_touch_event(struct hid_device *hid, struct hid_field *field, 815 struct hid_usage *usage, __s32 value) 816 { 817 /* we will handle the hidinput part later, now remains hiddev */ 818 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 819 hid->hiddev_hid_event(hid, field, usage, value); 820 821 return 1; 822 } 823 824 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, 825 struct hid_usage *usage, __s32 value, 826 bool first_packet) 827 { 828 struct mt_device *td = hid_get_drvdata(hid); 829 __s32 cls = td->mtclass.name; 830 __s32 quirks = td->mtclass.quirks; 831 struct input_dev *input = field->hidinput->input; 832 833 if (hid->claimed & HID_CLAIMED_INPUT) { 834 switch (usage->hid) { 835 case HID_DG_INRANGE: 836 if (quirks & MT_QUIRK_VALID_IS_INRANGE) 837 td->curvalid = value; 838 if (quirks & MT_QUIRK_HOVERING) 839 td->curdata.inrange_state = value; 840 break; 841 case HID_DG_TIPSWITCH: 842 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 843 td->curvalid = value; 844 td->curdata.touch_state = value; 845 break; 846 case HID_DG_CONFIDENCE: 847 if (quirks & MT_QUIRK_CONFIDENCE) 848 td->curdata.confidence_state = value; 849 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 850 td->curvalid = value; 851 break; 852 case HID_DG_CONTACTID: 853 td->curdata.contactid = value; 854 break; 855 case HID_DG_TIPPRESSURE: 856 td->curdata.p = value; 857 break; 858 case HID_GD_X: 859 if (usage->code == ABS_MT_TOOL_X) 860 td->curdata.cx = value; 861 else 862 td->curdata.x = value; 863 break; 864 case HID_GD_Y: 865 if (usage->code == ABS_MT_TOOL_Y) 866 td->curdata.cy = value; 867 else 868 td->curdata.y = value; 869 break; 870 case HID_DG_WIDTH: 871 td->curdata.w = value; 872 break; 873 case HID_DG_HEIGHT: 874 td->curdata.h = value; 875 break; 876 case HID_DG_SCANTIME: 877 td->timestamp = mt_compute_timestamp(td, field, value); 878 break; 879 case HID_DG_CONTACTCOUNT: 880 break; 881 case HID_DG_AZIMUTH: 882 /* 883 * Azimuth is counter-clockwise and ranges from [0, MAX) 884 * (a full revolution). Convert it to clockwise ranging 885 * [-MAX/2, MAX/2]. 886 * 887 * Note that ABS_MT_ORIENTATION require us to report 888 * the limit of [-MAX/4, MAX/4], but the value can go 889 * out of range to [-MAX/2, MAX/2] to report an upside 890 * down ellipsis. 891 */ 892 if (value > field->logical_maximum / 2) 893 value -= field->logical_maximum; 894 td->curdata.a = -value; 895 td->curdata.has_azimuth = true; 896 break; 897 case HID_DG_TOUCH: 898 /* do nothing */ 899 break; 900 901 default: 902 /* 903 * For Win8 PTP touchpads we should only look at 904 * non finger/touch events in the first_packet of 905 * a (possible) multi-packet frame. 906 */ 907 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) && 908 !first_packet) 909 return; 910 911 /* 912 * For Win8 PTP touchpads we map both the clickpad click 913 * and any "external" left buttons to BTN_LEFT if a 914 * device claims to have both we need to report 1 for 915 * BTN_LEFT if either is pressed, so we or all values 916 * together and report the result in mt_sync_frame(). 917 */ 918 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) && 919 usage->type == EV_KEY && usage->code == BTN_LEFT) { 920 td->left_button_state |= value; 921 return; 922 } 923 924 if (usage->type) 925 input_event(input, usage->type, usage->code, 926 value); 927 return; 928 } 929 930 if (usage->usage_index + 1 == field->report_count) { 931 /* we only take into account the last report. */ 932 if (usage->hid == td->last_slot_field) 933 mt_complete_slot(td, field->hidinput->input); 934 } 935 936 } 937 } 938 939 static void mt_touch_report(struct hid_device *hid, struct hid_report *report) 940 { 941 struct mt_device *td = hid_get_drvdata(hid); 942 __s32 cls = td->mtclass.name; 943 struct hid_field *field; 944 bool first_packet; 945 unsigned count; 946 int r, n, scantime = 0; 947 948 /* sticky fingers release in progress, abort */ 949 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 950 return; 951 952 /* 953 * Includes multi-packet support where subsequent 954 * packets are sent with zero contactcount. 955 */ 956 if (td->scantime_index >= 0) { 957 field = report->field[td->scantime_index]; 958 scantime = field->value[td->scantime_val_index]; 959 } 960 if (td->cc_index >= 0) { 961 struct hid_field *field = report->field[td->cc_index]; 962 int value = field->value[td->cc_value_index]; 963 964 /* 965 * For Win8 PTPs the first packet (td->num_received == 0) may 966 * have a contactcount of 0 if there only is a button event. 967 * We double check that this is not a continuation packet 968 * of a possible multi-packet frame be checking that the 969 * timestamp has changed. 970 */ 971 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) && 972 td->num_received == 0 && td->prev_scantime != scantime) 973 td->num_expected = value; 974 /* A non 0 contact count always indicates a first packet */ 975 else if (value) 976 td->num_expected = value; 977 } 978 td->prev_scantime = scantime; 979 980 first_packet = td->num_received == 0; 981 for (r = 0; r < report->maxfield; r++) { 982 field = report->field[r]; 983 count = field->report_count; 984 985 if (!(HID_MAIN_ITEM_VARIABLE & field->flags)) 986 continue; 987 988 for (n = 0; n < count; n++) 989 mt_process_mt_event(hid, field, &field->usage[n], 990 field->value[n], first_packet); 991 } 992 993 if (td->num_received >= td->num_expected) 994 mt_sync_frame(td, report->field[0]->hidinput->input); 995 996 /* 997 * Windows 8 specs says 2 things: 998 * - once a contact has been reported, it has to be reported in each 999 * subsequent report 1000 * - the report rate when fingers are present has to be at least 1001 * the refresh rate of the screen, 60 or 120 Hz 1002 * 1003 * I interprete this that the specification forces a report rate of 1004 * at least 60 Hz for a touchscreen to be certified. 1005 * Which means that if we do not get a report whithin 16 ms, either 1006 * something wrong happens, either the touchscreen forgets to send 1007 * a release. Taking a reasonable margin allows to remove issues 1008 * with USB communication or the load of the machine. 1009 * 1010 * Given that Win 8 devices are forced to send a release, this will 1011 * only affect laggish machines and the ones that have a firmware 1012 * defect. 1013 */ 1014 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) { 1015 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1016 mod_timer(&td->release_timer, 1017 jiffies + msecs_to_jiffies(100)); 1018 else 1019 del_timer(&td->release_timer); 1020 } 1021 1022 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1023 } 1024 1025 static int mt_touch_input_configured(struct hid_device *hdev, 1026 struct hid_input *hi) 1027 { 1028 struct mt_device *td = hid_get_drvdata(hdev); 1029 struct mt_class *cls = &td->mtclass; 1030 struct input_dev *input = hi->input; 1031 int ret; 1032 1033 if (!td->maxcontacts) 1034 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 1035 1036 mt_post_parse(td); 1037 if (td->serial_maybe) 1038 mt_post_parse_default_settings(td); 1039 1040 if (cls->is_indirect) 1041 td->mt_flags |= INPUT_MT_POINTER; 1042 1043 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 1044 td->mt_flags |= INPUT_MT_DROP_UNUSED; 1045 1046 /* check for clickpads */ 1047 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) 1048 td->is_buttonpad = true; 1049 1050 if (td->is_buttonpad) 1051 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 1052 1053 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); 1054 if (ret) 1055 return ret; 1056 1057 td->mt_flags = 0; 1058 return 0; 1059 } 1060 1061 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 1062 max, EV_KEY, (c)) 1063 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 1064 struct hid_field *field, struct hid_usage *usage, 1065 unsigned long **bit, int *max) 1066 { 1067 struct mt_device *td = hid_get_drvdata(hdev); 1068 1069 /* 1070 * If mtclass.export_all_inputs is not set, only map fields from 1071 * TouchScreen or TouchPad collections. We need to ignore fields 1072 * that belong to other collections such as Mouse that might have 1073 * the same GenericDesktop usages. 1074 */ 1075 if (!td->mtclass.export_all_inputs && 1076 field->application != HID_DG_TOUCHSCREEN && 1077 field->application != HID_DG_PEN && 1078 field->application != HID_DG_TOUCHPAD && 1079 field->application != HID_GD_KEYBOARD && 1080 field->application != HID_GD_SYSTEM_CONTROL && 1081 field->application != HID_CP_CONSUMER_CONTROL && 1082 field->application != HID_GD_WIRELESS_RADIO_CTLS && 1083 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1084 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 1085 return -1; 1086 1087 /* 1088 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 1089 * touchpad report descriptor. We need to treat these as an array to 1090 * map usages to input keys. 1091 */ 1092 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 1093 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP && 1094 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 1095 set_bit(EV_REP, hi->input->evbit); 1096 if (field->flags & HID_MAIN_ITEM_VARIABLE) 1097 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 1098 switch (usage->hid & HID_USAGE) { 1099 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 1100 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 1101 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 1102 case 0x6b: mt_map_key_clear(KEY_F21); break; 1103 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 1104 default: 1105 return -1; 1106 } 1107 return 1; 1108 } 1109 1110 /* 1111 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1112 * for the stylus. 1113 * The check for mt_report_id ensures we don't process 1114 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 1115 * collection, but within the report ID. 1116 */ 1117 if (field->physical == HID_DG_STYLUS) 1118 return 0; 1119 else if ((field->physical == 0) && 1120 (field->report->id != td->mt_report_id) && 1121 (td->mt_report_id != -1)) 1122 return 0; 1123 1124 if (field->application == HID_DG_TOUCHSCREEN || 1125 field->application == HID_DG_TOUCHPAD) 1126 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 1127 1128 /* let hid-core decide for the others */ 1129 return 0; 1130 } 1131 1132 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 1133 struct hid_field *field, struct hid_usage *usage, 1134 unsigned long **bit, int *max) 1135 { 1136 /* 1137 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1138 * for the stylus. 1139 */ 1140 if (field->physical == HID_DG_STYLUS) 1141 return 0; 1142 1143 if (field->application == HID_DG_TOUCHSCREEN || 1144 field->application == HID_DG_TOUCHPAD) { 1145 /* We own these mappings, tell hid-input to ignore them */ 1146 return -1; 1147 } 1148 1149 /* let hid-core decide for the others */ 1150 return 0; 1151 } 1152 1153 static int mt_event(struct hid_device *hid, struct hid_field *field, 1154 struct hid_usage *usage, __s32 value) 1155 { 1156 struct mt_device *td = hid_get_drvdata(hid); 1157 1158 if (field->report->id == td->mt_report_id) 1159 return mt_touch_event(hid, field, usage, value); 1160 1161 return 0; 1162 } 1163 1164 static void mt_report(struct hid_device *hid, struct hid_report *report) 1165 { 1166 struct mt_device *td = hid_get_drvdata(hid); 1167 struct hid_field *field = report->field[0]; 1168 1169 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1170 return; 1171 1172 if (report->id == td->mt_report_id) 1173 return mt_touch_report(hid, report); 1174 1175 if (field && field->hidinput && field->hidinput->input) 1176 input_sync(field->hidinput->input); 1177 } 1178 1179 static void mt_set_input_mode(struct hid_device *hdev) 1180 { 1181 struct mt_device *td = hid_get_drvdata(hdev); 1182 struct hid_report *r; 1183 struct hid_report_enum *re; 1184 struct mt_class *cls = &td->mtclass; 1185 char *buf; 1186 int report_len; 1187 1188 if (td->inputmode < 0) 1189 return; 1190 1191 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 1192 r = re->report_id_hash[td->inputmode]; 1193 if (r) { 1194 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1195 report_len = hid_report_len(r); 1196 buf = hid_alloc_report_buf(r, GFP_KERNEL); 1197 if (!buf) { 1198 hid_err(hdev, "failed to allocate buffer for report\n"); 1199 return; 1200 } 1201 hid_hw_raw_request(hdev, r->id, buf, report_len, 1202 HID_FEATURE_REPORT, 1203 HID_REQ_GET_REPORT); 1204 kfree(buf); 1205 } 1206 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 1207 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1208 } 1209 } 1210 1211 static void mt_set_maxcontacts(struct hid_device *hdev) 1212 { 1213 struct mt_device *td = hid_get_drvdata(hdev); 1214 struct hid_report *r; 1215 struct hid_report_enum *re; 1216 int fieldmax, max; 1217 1218 if (td->maxcontact_report_id < 0) 1219 return; 1220 1221 if (!td->mtclass.maxcontacts) 1222 return; 1223 1224 re = &hdev->report_enum[HID_FEATURE_REPORT]; 1225 r = re->report_id_hash[td->maxcontact_report_id]; 1226 if (r) { 1227 max = td->mtclass.maxcontacts; 1228 fieldmax = r->field[0]->logical_maximum; 1229 max = min(fieldmax, max); 1230 if (r->field[0]->value[0] != max) { 1231 r->field[0]->value[0] = max; 1232 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1233 } 1234 } 1235 } 1236 1237 static void mt_post_parse_default_settings(struct mt_device *td) 1238 { 1239 __s32 quirks = td->mtclass.quirks; 1240 1241 /* unknown serial device needs special quirks */ 1242 if (td->touches_by_report == 1) { 1243 quirks |= MT_QUIRK_ALWAYS_VALID; 1244 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1245 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1246 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1247 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1248 } 1249 1250 td->mtclass.quirks = quirks; 1251 } 1252 1253 static void mt_post_parse(struct mt_device *td) 1254 { 1255 struct mt_fields *f = td->fields; 1256 struct mt_class *cls = &td->mtclass; 1257 1258 if (td->touches_by_report > 0) { 1259 int field_count_per_touch = f->length / td->touches_by_report; 1260 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1261 } 1262 1263 if (td->cc_index < 0) 1264 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1265 } 1266 1267 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1268 { 1269 struct mt_device *td = hid_get_drvdata(hdev); 1270 char *name; 1271 const char *suffix = NULL; 1272 struct hid_field *field = hi->report->field[0]; 1273 int ret; 1274 1275 if (hi->report->id == td->mt_report_id) { 1276 ret = mt_touch_input_configured(hdev, hi); 1277 if (ret) 1278 return ret; 1279 } 1280 1281 /* 1282 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1283 * for the stylus. Check this first, and then rely on the application 1284 * field. 1285 */ 1286 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1287 suffix = "Pen"; 1288 /* force BTN_STYLUS to allow tablet matching in udev */ 1289 __set_bit(BTN_STYLUS, hi->input->keybit); 1290 } else { 1291 switch (field->application) { 1292 case HID_GD_KEYBOARD: 1293 suffix = "Keyboard"; 1294 break; 1295 case HID_GD_KEYPAD: 1296 suffix = "Keypad"; 1297 break; 1298 case HID_GD_MOUSE: 1299 suffix = "Mouse"; 1300 break; 1301 case HID_DG_STYLUS: 1302 suffix = "Pen"; 1303 /* force BTN_STYLUS to allow tablet matching in udev */ 1304 __set_bit(BTN_STYLUS, hi->input->keybit); 1305 break; 1306 case HID_DG_TOUCHSCREEN: 1307 /* we do not set suffix = "Touchscreen" */ 1308 break; 1309 case HID_DG_TOUCHPAD: 1310 suffix = "Touchpad"; 1311 break; 1312 case HID_GD_SYSTEM_CONTROL: 1313 suffix = "System Control"; 1314 break; 1315 case HID_CP_CONSUMER_CONTROL: 1316 suffix = "Consumer Control"; 1317 break; 1318 case HID_GD_WIRELESS_RADIO_CTLS: 1319 suffix = "Wireless Radio Control"; 1320 break; 1321 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1322 suffix = "Custom Media Keys"; 1323 break; 1324 default: 1325 suffix = "UNKNOWN"; 1326 break; 1327 } 1328 } 1329 1330 if (suffix) { 1331 name = devm_kzalloc(&hi->input->dev, 1332 strlen(hdev->name) + strlen(suffix) + 2, 1333 GFP_KERNEL); 1334 if (name) { 1335 sprintf(name, "%s %s", hdev->name, suffix); 1336 hi->input->name = name; 1337 } 1338 } 1339 1340 return 0; 1341 } 1342 1343 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1344 { 1345 if (field->usage[0].hid != usage || 1346 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1347 return; 1348 1349 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1350 field->flags |= HID_MAIN_ITEM_VARIABLE; 1351 } 1352 1353 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1354 { 1355 struct hid_report *report; 1356 int i; 1357 1358 list_for_each_entry(report, 1359 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1360 list) { 1361 1362 if (!report->maxfield) 1363 continue; 1364 1365 for (i = 0; i < report->maxfield; i++) 1366 if (report->field[i]->maxusage >= 1) 1367 mt_fix_const_field(report->field[i], usage); 1368 } 1369 } 1370 1371 static void mt_release_contacts(struct hid_device *hid) 1372 { 1373 struct hid_input *hidinput; 1374 struct mt_device *td = hid_get_drvdata(hid); 1375 1376 list_for_each_entry(hidinput, &hid->inputs, list) { 1377 struct input_dev *input_dev = hidinput->input; 1378 struct input_mt *mt = input_dev->mt; 1379 int i; 1380 1381 if (mt) { 1382 for (i = 0; i < mt->num_slots; i++) { 1383 input_mt_slot(input_dev, i); 1384 input_mt_report_slot_state(input_dev, 1385 MT_TOOL_FINGER, 1386 false); 1387 } 1388 input_mt_sync_frame(input_dev); 1389 input_sync(input_dev); 1390 } 1391 } 1392 1393 td->num_received = 0; 1394 } 1395 1396 static void mt_expired_timeout(struct timer_list *t) 1397 { 1398 struct mt_device *td = from_timer(td, t, release_timer); 1399 struct hid_device *hdev = td->hdev; 1400 1401 /* 1402 * An input report came in just before we release the sticky fingers, 1403 * it will take care of the sticky fingers. 1404 */ 1405 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1406 return; 1407 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1408 mt_release_contacts(hdev); 1409 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1410 } 1411 1412 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1413 { 1414 int ret, i; 1415 struct mt_device *td; 1416 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1417 1418 for (i = 0; mt_classes[i].name ; i++) { 1419 if (id->driver_data == mt_classes[i].name) { 1420 mtclass = &(mt_classes[i]); 1421 break; 1422 } 1423 } 1424 1425 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1426 if (!td) { 1427 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1428 return -ENOMEM; 1429 } 1430 td->hdev = hdev; 1431 td->mtclass = *mtclass; 1432 td->inputmode = -1; 1433 td->maxcontact_report_id = -1; 1434 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1435 td->cc_index = -1; 1436 td->scantime_index = -1; 1437 td->mt_report_id = -1; 1438 hid_set_drvdata(hdev, td); 1439 1440 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1441 GFP_KERNEL); 1442 if (!td->fields) { 1443 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1444 return -ENOMEM; 1445 } 1446 1447 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1448 td->serial_maybe = true; 1449 1450 /* 1451 * Store the initial quirk state 1452 */ 1453 td->initial_quirks = hdev->quirks; 1454 1455 /* This allows the driver to correctly support devices 1456 * that emit events over several HID messages. 1457 */ 1458 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1459 1460 /* 1461 * This allows the driver to handle different input sensors 1462 * that emits events through different reports on the same HID 1463 * device. 1464 */ 1465 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1466 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1467 1468 /* 1469 * Some multitouch screens do not like to be polled for input 1470 * reports. Fortunately, the Win8 spec says that all touches 1471 * should be sent during each report, making the initialization 1472 * of input reports unnecessary. For Win7 devices, well, let's hope 1473 * they will still be happy (this is only be a problem if a touch 1474 * was already there while probing the device). 1475 * 1476 * In addition some touchpads do not behave well if we read 1477 * all feature reports from them. Instead we prevent 1478 * initial report fetching and then selectively fetch each 1479 * report we are interested in. 1480 */ 1481 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1482 1483 timer_setup(&td->release_timer, mt_expired_timeout, 0); 1484 1485 ret = hid_parse(hdev); 1486 if (ret != 0) 1487 return ret; 1488 1489 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1490 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1491 1492 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1493 if (ret) 1494 return ret; 1495 1496 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1497 if (ret) 1498 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1499 hdev->name); 1500 1501 mt_set_maxcontacts(hdev); 1502 mt_set_input_mode(hdev); 1503 1504 /* release .fields memory as it is not used anymore */ 1505 devm_kfree(&hdev->dev, td->fields); 1506 td->fields = NULL; 1507 1508 return 0; 1509 } 1510 1511 #ifdef CONFIG_PM 1512 static int mt_reset_resume(struct hid_device *hdev) 1513 { 1514 mt_release_contacts(hdev); 1515 mt_set_maxcontacts(hdev); 1516 mt_set_input_mode(hdev); 1517 return 0; 1518 } 1519 1520 static int mt_resume(struct hid_device *hdev) 1521 { 1522 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1523 * It should be safe to send it to other devices too. 1524 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1525 1526 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1527 1528 return 0; 1529 } 1530 #endif 1531 1532 static void mt_remove(struct hid_device *hdev) 1533 { 1534 struct mt_device *td = hid_get_drvdata(hdev); 1535 1536 del_timer_sync(&td->release_timer); 1537 1538 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1539 hid_hw_stop(hdev); 1540 hdev->quirks = td->initial_quirks; 1541 } 1542 1543 /* 1544 * This list contains only: 1545 * - VID/PID of products not working with the default multitouch handling 1546 * - 2 generic rules. 1547 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1548 */ 1549 static const struct hid_device_id mt_devices[] = { 1550 1551 /* 3M panels */ 1552 { .driver_data = MT_CLS_3M, 1553 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1554 USB_DEVICE_ID_3M1968) }, 1555 { .driver_data = MT_CLS_3M, 1556 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1557 USB_DEVICE_ID_3M2256) }, 1558 { .driver_data = MT_CLS_3M, 1559 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1560 USB_DEVICE_ID_3M3266) }, 1561 1562 /* Alps devices */ 1563 { .driver_data = MT_CLS_WIN_8_DUAL, 1564 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1565 USB_VENDOR_ID_ALPS_JP, 1566 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1567 { .driver_data = MT_CLS_WIN_8_DUAL, 1568 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1569 USB_VENDOR_ID_ALPS_JP, 1570 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1571 1572 /* Lenovo X1 TAB Gen 2 */ 1573 { .driver_data = MT_CLS_WIN_8_DUAL, 1574 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1575 USB_VENDOR_ID_LENOVO, 1576 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1577 1578 /* Anton devices */ 1579 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1580 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1581 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1582 1583 /* Asus T304UA */ 1584 { .driver_data = MT_CLS_ASUS, 1585 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1586 USB_VENDOR_ID_ASUSTEK, 1587 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1588 1589 /* Atmel panels */ 1590 { .driver_data = MT_CLS_SERIAL, 1591 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1592 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1593 1594 /* Baanto multitouch devices */ 1595 { .driver_data = MT_CLS_NSMU, 1596 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1597 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1598 1599 /* Cando panels */ 1600 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1601 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1602 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1603 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1604 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1605 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1606 1607 /* Chunghwa Telecom touch panels */ 1608 { .driver_data = MT_CLS_NSMU, 1609 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1610 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1611 1612 /* CJTouch panels */ 1613 { .driver_data = MT_CLS_NSMU, 1614 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1615 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1616 { .driver_data = MT_CLS_NSMU, 1617 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1618 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1619 1620 /* CVTouch panels */ 1621 { .driver_data = MT_CLS_NSMU, 1622 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1623 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1624 1625 /* eGalax devices (resistive) */ 1626 { .driver_data = MT_CLS_EGALAX, 1627 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1628 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1629 { .driver_data = MT_CLS_EGALAX, 1630 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1631 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1632 1633 /* eGalax devices (capacitive) */ 1634 { .driver_data = MT_CLS_EGALAX_SERIAL, 1635 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1636 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1637 { .driver_data = MT_CLS_EGALAX, 1638 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1639 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1640 { .driver_data = MT_CLS_EGALAX_SERIAL, 1641 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1642 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1643 { .driver_data = MT_CLS_EGALAX_SERIAL, 1644 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1645 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1646 { .driver_data = MT_CLS_EGALAX_SERIAL, 1647 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1648 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1649 { .driver_data = MT_CLS_EGALAX_SERIAL, 1650 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1651 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1652 { .driver_data = MT_CLS_EGALAX, 1653 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1654 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1655 { .driver_data = MT_CLS_EGALAX, 1656 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1657 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1658 { .driver_data = MT_CLS_EGALAX_SERIAL, 1659 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1660 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1661 { .driver_data = MT_CLS_EGALAX, 1662 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1663 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1664 { .driver_data = MT_CLS_EGALAX, 1665 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1666 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1667 { .driver_data = MT_CLS_EGALAX, 1668 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1669 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1670 { .driver_data = MT_CLS_EGALAX, 1671 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1672 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1673 { .driver_data = MT_CLS_EGALAX_SERIAL, 1674 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1675 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1676 { .driver_data = MT_CLS_EGALAX_SERIAL, 1677 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1678 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1679 { .driver_data = MT_CLS_EGALAX_SERIAL, 1680 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1681 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1682 1683 /* Elitegroup panel */ 1684 { .driver_data = MT_CLS_SERIAL, 1685 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1686 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1687 1688 /* Flatfrog Panels */ 1689 { .driver_data = MT_CLS_FLATFROG, 1690 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1691 USB_DEVICE_ID_MULTITOUCH_3200) }, 1692 1693 /* FocalTech Panels */ 1694 { .driver_data = MT_CLS_SERIAL, 1695 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1696 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1697 1698 /* GeneralTouch panel */ 1699 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1700 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1701 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1702 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1703 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1704 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1705 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1706 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1707 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1708 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1709 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1710 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1711 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1712 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1713 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1714 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1715 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1716 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1717 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1718 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1719 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1720 1721 /* Gametel game controller */ 1722 { .driver_data = MT_CLS_NSMU, 1723 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1724 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1725 1726 /* GoodTouch panels */ 1727 { .driver_data = MT_CLS_NSMU, 1728 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1729 USB_DEVICE_ID_GOODTOUCH_000f) }, 1730 1731 /* Hanvon panels */ 1732 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1733 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1734 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1735 1736 /* Ilitek dual touch panel */ 1737 { .driver_data = MT_CLS_NSMU, 1738 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1739 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1740 1741 /* LG Melfas panel */ 1742 { .driver_data = MT_CLS_LG, 1743 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1744 USB_DEVICE_ID_LG_MELFAS_MT) }, 1745 1746 /* MosArt panels */ 1747 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1748 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1749 USB_DEVICE_ID_ASUS_T91MT)}, 1750 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1751 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1752 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1753 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1754 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1755 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1756 1757 /* Novatek Panel */ 1758 { .driver_data = MT_CLS_NSMU, 1759 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1760 USB_DEVICE_ID_NOVATEK_PCT) }, 1761 1762 /* Ntrig Panel */ 1763 { .driver_data = MT_CLS_NSMU, 1764 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1765 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1766 1767 /* Panasonic panels */ 1768 { .driver_data = MT_CLS_PANASONIC, 1769 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1770 USB_DEVICE_ID_PANABOARD_UBT780) }, 1771 { .driver_data = MT_CLS_PANASONIC, 1772 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1773 USB_DEVICE_ID_PANABOARD_UBT880) }, 1774 1775 /* PixArt optical touch screen */ 1776 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1777 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1778 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1779 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1780 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1781 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1782 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1783 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1784 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1785 1786 /* PixCir-based panels */ 1787 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1788 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1789 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1790 1791 /* Quanta-based panels */ 1792 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1793 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1794 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1795 1796 /* Stantum panels */ 1797 { .driver_data = MT_CLS_CONFIDENCE, 1798 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1799 USB_DEVICE_ID_MTP_STM)}, 1800 1801 /* TopSeed panels */ 1802 { .driver_data = MT_CLS_TOPSEED, 1803 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1804 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1805 1806 /* Touch International panels */ 1807 { .driver_data = MT_CLS_NSMU, 1808 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1809 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1810 1811 /* Unitec panels */ 1812 { .driver_data = MT_CLS_NSMU, 1813 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1814 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1815 { .driver_data = MT_CLS_NSMU, 1816 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1817 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1818 1819 /* VTL panels */ 1820 { .driver_data = MT_CLS_VTL, 1821 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1822 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1823 1824 /* Wistron panels */ 1825 { .driver_data = MT_CLS_NSMU, 1826 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1827 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1828 1829 /* XAT */ 1830 { .driver_data = MT_CLS_NSMU, 1831 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1832 USB_DEVICE_ID_XAT_CSR) }, 1833 1834 /* Xiroku */ 1835 { .driver_data = MT_CLS_NSMU, 1836 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1837 USB_DEVICE_ID_XIROKU_SPX) }, 1838 { .driver_data = MT_CLS_NSMU, 1839 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1840 USB_DEVICE_ID_XIROKU_MPX) }, 1841 { .driver_data = MT_CLS_NSMU, 1842 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1843 USB_DEVICE_ID_XIROKU_CSR) }, 1844 { .driver_data = MT_CLS_NSMU, 1845 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1846 USB_DEVICE_ID_XIROKU_SPX1) }, 1847 { .driver_data = MT_CLS_NSMU, 1848 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1849 USB_DEVICE_ID_XIROKU_MPX1) }, 1850 { .driver_data = MT_CLS_NSMU, 1851 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1852 USB_DEVICE_ID_XIROKU_CSR1) }, 1853 { .driver_data = MT_CLS_NSMU, 1854 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1855 USB_DEVICE_ID_XIROKU_SPX2) }, 1856 { .driver_data = MT_CLS_NSMU, 1857 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1858 USB_DEVICE_ID_XIROKU_MPX2) }, 1859 { .driver_data = MT_CLS_NSMU, 1860 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1861 USB_DEVICE_ID_XIROKU_CSR2) }, 1862 1863 /* Google MT devices */ 1864 { .driver_data = MT_CLS_GOOGLE, 1865 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 1866 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 1867 1868 /* Generic MT device */ 1869 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1870 1871 /* Generic Win 8 certified MT device */ 1872 { .driver_data = MT_CLS_WIN_8, 1873 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1874 HID_ANY_ID, HID_ANY_ID) }, 1875 { } 1876 }; 1877 MODULE_DEVICE_TABLE(hid, mt_devices); 1878 1879 static const struct hid_usage_id mt_grabbed_usages[] = { 1880 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1881 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1882 }; 1883 1884 static struct hid_driver mt_driver = { 1885 .name = "hid-multitouch", 1886 .id_table = mt_devices, 1887 .probe = mt_probe, 1888 .remove = mt_remove, 1889 .input_mapping = mt_input_mapping, 1890 .input_mapped = mt_input_mapped, 1891 .input_configured = mt_input_configured, 1892 .feature_mapping = mt_feature_mapping, 1893 .usage_table = mt_grabbed_usages, 1894 .event = mt_event, 1895 .report = mt_report, 1896 #ifdef CONFIG_PM 1897 .reset_resume = mt_reset_resume, 1898 .resume = mt_resume, 1899 #endif 1900 }; 1901 module_hid_driver(mt_driver); 1902