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_GD_SYSTEM_CONTROL && 934 field->application != HID_CP_CONSUMER_CONTROL && 935 field->application != HID_GD_WIRELESS_RADIO_CTLS && 936 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 937 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP)) 938 return -1; 939 940 /* 941 * Some Asus keyboard+touchpad devices have the hotkeys defined in the 942 * touchpad report descriptor. We need to treat these as an array to 943 * map usages to input keys. 944 */ 945 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && 946 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP && 947 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) { 948 set_bit(EV_REP, hi->input->evbit); 949 if (field->flags & HID_MAIN_ITEM_VARIABLE) 950 field->flags &= ~HID_MAIN_ITEM_VARIABLE; 951 switch (usage->hid & HID_USAGE) { 952 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break; 953 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break; 954 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break; 955 case 0x6b: mt_map_key_clear(KEY_F21); break; 956 case 0x6c: mt_map_key_clear(KEY_SLEEP); break; 957 default: 958 return -1; 959 } 960 return 1; 961 } 962 963 /* 964 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 965 * for the stylus. 966 * The check for mt_report_id ensures we don't process 967 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical 968 * collection, but within the report ID. 969 */ 970 if (field->physical == HID_DG_STYLUS) 971 return 0; 972 else if ((field->physical == 0) && 973 (field->report->id != td->mt_report_id) && 974 (td->mt_report_id != -1)) 975 return 0; 976 977 if (field->application == HID_DG_TOUCHSCREEN || 978 field->application == HID_DG_TOUCHPAD) 979 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); 980 981 /* let hid-core decide for the others */ 982 return 0; 983 } 984 985 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 986 struct hid_field *field, struct hid_usage *usage, 987 unsigned long **bit, int *max) 988 { 989 /* 990 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 991 * for the stylus. 992 */ 993 if (field->physical == HID_DG_STYLUS) 994 return 0; 995 996 if (field->application == HID_DG_TOUCHSCREEN || 997 field->application == HID_DG_TOUCHPAD) { 998 /* We own these mappings, tell hid-input to ignore them */ 999 return -1; 1000 } 1001 1002 /* let hid-core decide for the others */ 1003 return 0; 1004 } 1005 1006 static int mt_event(struct hid_device *hid, struct hid_field *field, 1007 struct hid_usage *usage, __s32 value) 1008 { 1009 struct mt_device *td = hid_get_drvdata(hid); 1010 1011 if (field->report->id == td->mt_report_id) 1012 return mt_touch_event(hid, field, usage, value); 1013 1014 return 0; 1015 } 1016 1017 static void mt_report(struct hid_device *hid, struct hid_report *report) 1018 { 1019 struct mt_device *td = hid_get_drvdata(hid); 1020 struct hid_field *field = report->field[0]; 1021 1022 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1023 return; 1024 1025 if (report->id == td->mt_report_id) 1026 return mt_touch_report(hid, report); 1027 1028 if (field && field->hidinput && field->hidinput->input) 1029 input_sync(field->hidinput->input); 1030 } 1031 1032 static void mt_set_input_mode(struct hid_device *hdev) 1033 { 1034 struct mt_device *td = hid_get_drvdata(hdev); 1035 struct hid_report *r; 1036 struct hid_report_enum *re; 1037 struct mt_class *cls = &td->mtclass; 1038 char *buf; 1039 int report_len; 1040 1041 if (td->inputmode < 0) 1042 return; 1043 1044 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 1045 r = re->report_id_hash[td->inputmode]; 1046 if (r) { 1047 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { 1048 report_len = hid_report_len(r); 1049 buf = hid_alloc_report_buf(r, GFP_KERNEL); 1050 if (!buf) { 1051 hid_err(hdev, "failed to allocate buffer for report\n"); 1052 return; 1053 } 1054 hid_hw_raw_request(hdev, r->id, buf, report_len, 1055 HID_FEATURE_REPORT, 1056 HID_REQ_GET_REPORT); 1057 kfree(buf); 1058 } 1059 r->field[0]->value[td->inputmode_index] = td->inputmode_value; 1060 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1061 } 1062 } 1063 1064 static void mt_set_maxcontacts(struct hid_device *hdev) 1065 { 1066 struct mt_device *td = hid_get_drvdata(hdev); 1067 struct hid_report *r; 1068 struct hid_report_enum *re; 1069 int fieldmax, max; 1070 1071 if (td->maxcontact_report_id < 0) 1072 return; 1073 1074 if (!td->mtclass.maxcontacts) 1075 return; 1076 1077 re = &hdev->report_enum[HID_FEATURE_REPORT]; 1078 r = re->report_id_hash[td->maxcontact_report_id]; 1079 if (r) { 1080 max = td->mtclass.maxcontacts; 1081 fieldmax = r->field[0]->logical_maximum; 1082 max = min(fieldmax, max); 1083 if (r->field[0]->value[0] != max) { 1084 r->field[0]->value[0] = max; 1085 hid_hw_request(hdev, r, HID_REQ_SET_REPORT); 1086 } 1087 } 1088 } 1089 1090 static void mt_post_parse_default_settings(struct mt_device *td) 1091 { 1092 __s32 quirks = td->mtclass.quirks; 1093 1094 /* unknown serial device needs special quirks */ 1095 if (td->touches_by_report == 1) { 1096 quirks |= MT_QUIRK_ALWAYS_VALID; 1097 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 1098 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 1099 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 1100 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1101 } 1102 1103 td->mtclass.quirks = quirks; 1104 } 1105 1106 static void mt_post_parse(struct mt_device *td) 1107 { 1108 struct mt_fields *f = td->fields; 1109 struct mt_class *cls = &td->mtclass; 1110 1111 if (td->touches_by_report > 0) { 1112 int field_count_per_touch = f->length / td->touches_by_report; 1113 td->last_slot_field = f->usages[field_count_per_touch - 1]; 1114 } 1115 1116 if (td->cc_index < 0) 1117 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; 1118 } 1119 1120 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) 1121 { 1122 struct mt_device *td = hid_get_drvdata(hdev); 1123 char *name; 1124 const char *suffix = NULL; 1125 struct hid_field *field = hi->report->field[0]; 1126 int ret; 1127 1128 if (hi->report->id == td->mt_report_id) { 1129 ret = mt_touch_input_configured(hdev, hi); 1130 if (ret) 1131 return ret; 1132 } 1133 1134 /* 1135 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" 1136 * for the stylus. Check this first, and then rely on the application 1137 * field. 1138 */ 1139 if (hi->report->field[0]->physical == HID_DG_STYLUS) { 1140 suffix = "Pen"; 1141 /* force BTN_STYLUS to allow tablet matching in udev */ 1142 __set_bit(BTN_STYLUS, hi->input->keybit); 1143 } else { 1144 switch (field->application) { 1145 case HID_GD_KEYBOARD: 1146 suffix = "Keyboard"; 1147 break; 1148 case HID_GD_KEYPAD: 1149 suffix = "Keypad"; 1150 break; 1151 case HID_GD_MOUSE: 1152 suffix = "Mouse"; 1153 break; 1154 case HID_DG_STYLUS: 1155 suffix = "Pen"; 1156 /* force BTN_STYLUS to allow tablet matching in udev */ 1157 __set_bit(BTN_STYLUS, hi->input->keybit); 1158 break; 1159 case HID_DG_TOUCHSCREEN: 1160 /* we do not set suffix = "Touchscreen" */ 1161 break; 1162 case HID_DG_TOUCHPAD: 1163 suffix = "Touchpad"; 1164 break; 1165 case HID_GD_SYSTEM_CONTROL: 1166 suffix = "System Control"; 1167 break; 1168 case HID_CP_CONSUMER_CONTROL: 1169 suffix = "Consumer Control"; 1170 break; 1171 case HID_GD_WIRELESS_RADIO_CTLS: 1172 suffix = "Wireless Radio Control"; 1173 break; 1174 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS: 1175 suffix = "Custom Media Keys"; 1176 break; 1177 default: 1178 suffix = "UNKNOWN"; 1179 break; 1180 } 1181 } 1182 1183 if (suffix) { 1184 name = devm_kzalloc(&hi->input->dev, 1185 strlen(hdev->name) + strlen(suffix) + 2, 1186 GFP_KERNEL); 1187 if (name) { 1188 sprintf(name, "%s %s", hdev->name, suffix); 1189 hi->input->name = name; 1190 } 1191 } 1192 1193 return 0; 1194 } 1195 1196 static void mt_fix_const_field(struct hid_field *field, unsigned int usage) 1197 { 1198 if (field->usage[0].hid != usage || 1199 !(field->flags & HID_MAIN_ITEM_CONSTANT)) 1200 return; 1201 1202 field->flags &= ~HID_MAIN_ITEM_CONSTANT; 1203 field->flags |= HID_MAIN_ITEM_VARIABLE; 1204 } 1205 1206 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage) 1207 { 1208 struct hid_report *report; 1209 int i; 1210 1211 list_for_each_entry(report, 1212 &hdev->report_enum[HID_INPUT_REPORT].report_list, 1213 list) { 1214 1215 if (!report->maxfield) 1216 continue; 1217 1218 for (i = 0; i < report->maxfield; i++) 1219 if (report->field[i]->maxusage >= 1) 1220 mt_fix_const_field(report->field[i], usage); 1221 } 1222 } 1223 1224 static void mt_release_contacts(struct hid_device *hid) 1225 { 1226 struct hid_input *hidinput; 1227 struct mt_device *td = hid_get_drvdata(hid); 1228 1229 list_for_each_entry(hidinput, &hid->inputs, list) { 1230 struct input_dev *input_dev = hidinput->input; 1231 struct input_mt *mt = input_dev->mt; 1232 int i; 1233 1234 if (mt) { 1235 for (i = 0; i < mt->num_slots; i++) { 1236 input_mt_slot(input_dev, i); 1237 input_mt_report_slot_state(input_dev, 1238 MT_TOOL_FINGER, 1239 false); 1240 } 1241 input_mt_sync_frame(input_dev); 1242 input_sync(input_dev); 1243 } 1244 } 1245 1246 td->num_received = 0; 1247 } 1248 1249 static void mt_expired_timeout(unsigned long arg) 1250 { 1251 struct hid_device *hdev = (void *)arg; 1252 struct mt_device *td = hid_get_drvdata(hdev); 1253 1254 /* 1255 * An input report came in just before we release the sticky fingers, 1256 * it will take care of the sticky fingers. 1257 */ 1258 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) 1259 return; 1260 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags)) 1261 mt_release_contacts(hdev); 1262 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); 1263 } 1264 1265 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 1266 { 1267 int ret, i; 1268 struct mt_device *td; 1269 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 1270 1271 for (i = 0; mt_classes[i].name ; i++) { 1272 if (id->driver_data == mt_classes[i].name) { 1273 mtclass = &(mt_classes[i]); 1274 break; 1275 } 1276 } 1277 1278 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); 1279 if (!td) { 1280 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 1281 return -ENOMEM; 1282 } 1283 td->mtclass = *mtclass; 1284 td->inputmode = -1; 1285 td->maxcontact_report_id = -1; 1286 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; 1287 td->cc_index = -1; 1288 td->mt_report_id = -1; 1289 hid_set_drvdata(hdev, td); 1290 1291 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), 1292 GFP_KERNEL); 1293 if (!td->fields) { 1294 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 1295 return -ENOMEM; 1296 } 1297 1298 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 1299 td->serial_maybe = true; 1300 1301 /* 1302 * Store the initial quirk state 1303 */ 1304 td->initial_quirks = hdev->quirks; 1305 1306 /* This allows the driver to correctly support devices 1307 * that emit events over several HID messages. 1308 */ 1309 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 1310 1311 /* 1312 * This allows the driver to handle different input sensors 1313 * that emits events through different reports on the same HID 1314 * device. 1315 */ 1316 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 1317 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; 1318 1319 /* 1320 * Some multitouch screens do not like to be polled for input 1321 * reports. Fortunately, the Win8 spec says that all touches 1322 * should be sent during each report, making the initialization 1323 * of input reports unnecessary. For Win7 devices, well, let's hope 1324 * they will still be happy (this is only be a problem if a touch 1325 * was already there while probing the device). 1326 * 1327 * In addition some touchpads do not behave well if we read 1328 * all feature reports from them. Instead we prevent 1329 * initial report fetching and then selectively fetch each 1330 * report we are interested in. 1331 */ 1332 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 1333 1334 setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev); 1335 1336 ret = hid_parse(hdev); 1337 if (ret != 0) 1338 return ret; 1339 1340 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) 1341 mt_fix_const_fields(hdev, HID_DG_CONTACTID); 1342 1343 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1344 if (ret) 1345 return ret; 1346 1347 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 1348 if (ret) 1349 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n", 1350 hdev->name); 1351 1352 mt_set_maxcontacts(hdev); 1353 mt_set_input_mode(hdev); 1354 1355 /* release .fields memory as it is not used anymore */ 1356 devm_kfree(&hdev->dev, td->fields); 1357 td->fields = NULL; 1358 1359 return 0; 1360 } 1361 1362 #ifdef CONFIG_PM 1363 static int mt_reset_resume(struct hid_device *hdev) 1364 { 1365 mt_release_contacts(hdev); 1366 mt_set_maxcontacts(hdev); 1367 mt_set_input_mode(hdev); 1368 return 0; 1369 } 1370 1371 static int mt_resume(struct hid_device *hdev) 1372 { 1373 /* Some Elan legacy devices require SET_IDLE to be set on resume. 1374 * It should be safe to send it to other devices too. 1375 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ 1376 1377 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE); 1378 1379 return 0; 1380 } 1381 #endif 1382 1383 static void mt_remove(struct hid_device *hdev) 1384 { 1385 struct mt_device *td = hid_get_drvdata(hdev); 1386 1387 del_timer_sync(&td->release_timer); 1388 1389 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 1390 hid_hw_stop(hdev); 1391 hdev->quirks = td->initial_quirks; 1392 } 1393 1394 /* 1395 * This list contains only: 1396 * - VID/PID of products not working with the default multitouch handling 1397 * - 2 generic rules. 1398 * So there is no point in adding here any device with MT_CLS_DEFAULT. 1399 */ 1400 static const struct hid_device_id mt_devices[] = { 1401 1402 /* 3M panels */ 1403 { .driver_data = MT_CLS_3M, 1404 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1405 USB_DEVICE_ID_3M1968) }, 1406 { .driver_data = MT_CLS_3M, 1407 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1408 USB_DEVICE_ID_3M2256) }, 1409 { .driver_data = MT_CLS_3M, 1410 MT_USB_DEVICE(USB_VENDOR_ID_3M, 1411 USB_DEVICE_ID_3M3266) }, 1412 1413 /* Alps devices */ 1414 { .driver_data = MT_CLS_WIN_8_DUAL, 1415 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1416 USB_VENDOR_ID_ALPS_JP, 1417 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) }, 1418 { .driver_data = MT_CLS_WIN_8_DUAL, 1419 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1420 USB_VENDOR_ID_ALPS_JP, 1421 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, 1422 1423 /* Lenovo X1 TAB Gen 2 */ 1424 { .driver_data = MT_CLS_WIN_8_DUAL, 1425 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1426 USB_VENDOR_ID_LENOVO, 1427 USB_DEVICE_ID_LENOVO_X1_TAB) }, 1428 1429 /* Anton devices */ 1430 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS, 1431 MT_USB_DEVICE(USB_VENDOR_ID_ANTON, 1432 USB_DEVICE_ID_ANTON_TOUCH_PAD) }, 1433 1434 /* Asus T304UA */ 1435 { .driver_data = MT_CLS_ASUS, 1436 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, 1437 USB_VENDOR_ID_ASUSTEK, 1438 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) }, 1439 1440 /* Atmel panels */ 1441 { .driver_data = MT_CLS_SERIAL, 1442 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 1443 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 1444 1445 /* Baanto multitouch devices */ 1446 { .driver_data = MT_CLS_NSMU, 1447 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 1448 USB_DEVICE_ID_BAANTO_MT_190W2) }, 1449 1450 /* Cando panels */ 1451 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1452 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1453 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 1454 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 1455 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1456 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 1457 1458 /* Chunghwa Telecom touch panels */ 1459 { .driver_data = MT_CLS_NSMU, 1460 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 1461 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 1462 1463 /* CJTouch panels */ 1464 { .driver_data = MT_CLS_NSMU, 1465 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1466 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) }, 1467 { .driver_data = MT_CLS_NSMU, 1468 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH, 1469 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) }, 1470 1471 /* CVTouch panels */ 1472 { .driver_data = MT_CLS_NSMU, 1473 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 1474 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 1475 1476 /* eGalax devices (resistive) */ 1477 { .driver_data = MT_CLS_EGALAX, 1478 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1479 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 1480 { .driver_data = MT_CLS_EGALAX, 1481 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1482 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 1483 1484 /* eGalax devices (capacitive) */ 1485 { .driver_data = MT_CLS_EGALAX_SERIAL, 1486 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1487 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 1488 { .driver_data = MT_CLS_EGALAX, 1489 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1490 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 1491 { .driver_data = MT_CLS_EGALAX_SERIAL, 1492 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1493 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 1494 { .driver_data = MT_CLS_EGALAX_SERIAL, 1495 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1496 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 1497 { .driver_data = MT_CLS_EGALAX_SERIAL, 1498 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1499 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 1500 { .driver_data = MT_CLS_EGALAX_SERIAL, 1501 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1502 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 1503 { .driver_data = MT_CLS_EGALAX, 1504 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1505 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 1506 { .driver_data = MT_CLS_EGALAX, 1507 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1508 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 1509 { .driver_data = MT_CLS_EGALAX_SERIAL, 1510 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1511 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 1512 { .driver_data = MT_CLS_EGALAX, 1513 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1514 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) }, 1515 { .driver_data = MT_CLS_EGALAX, 1516 HID_USB_DEVICE(USB_VENDOR_ID_DWAV, 1517 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) }, 1518 { .driver_data = MT_CLS_EGALAX, 1519 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1520 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 1521 { .driver_data = MT_CLS_EGALAX, 1522 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1523 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 1524 { .driver_data = MT_CLS_EGALAX_SERIAL, 1525 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1526 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 1527 { .driver_data = MT_CLS_EGALAX_SERIAL, 1528 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1529 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) }, 1530 { .driver_data = MT_CLS_EGALAX_SERIAL, 1531 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 1532 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 1533 1534 /* Elitegroup panel */ 1535 { .driver_data = MT_CLS_SERIAL, 1536 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP, 1537 USB_DEVICE_ID_ELITEGROUP_05D8) }, 1538 1539 /* Flatfrog Panels */ 1540 { .driver_data = MT_CLS_FLATFROG, 1541 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, 1542 USB_DEVICE_ID_MULTITOUCH_3200) }, 1543 1544 /* FocalTech Panels */ 1545 { .driver_data = MT_CLS_SERIAL, 1546 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL, 1547 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) }, 1548 1549 /* GeneralTouch panel */ 1550 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1551 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1552 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 1553 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1554 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1555 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) }, 1556 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS, 1557 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1558 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) }, 1559 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1560 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1561 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) }, 1562 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1563 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1564 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) }, 1565 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1566 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1567 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) }, 1568 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, 1569 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 1570 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) }, 1571 1572 /* Gametel game controller */ 1573 { .driver_data = MT_CLS_NSMU, 1574 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 1575 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 1576 1577 /* GoodTouch panels */ 1578 { .driver_data = MT_CLS_NSMU, 1579 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 1580 USB_DEVICE_ID_GOODTOUCH_000f) }, 1581 1582 /* Hanvon panels */ 1583 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1584 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 1585 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 1586 1587 /* Ilitek dual touch panel */ 1588 { .driver_data = MT_CLS_NSMU, 1589 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 1590 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 1591 1592 /* LG Melfas panel */ 1593 { .driver_data = MT_CLS_LG, 1594 HID_USB_DEVICE(USB_VENDOR_ID_LG, 1595 USB_DEVICE_ID_LG_MELFAS_MT) }, 1596 1597 /* MosArt panels */ 1598 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1599 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1600 USB_DEVICE_ID_ASUS_T91MT)}, 1601 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1602 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 1603 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 1604 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 1605 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 1606 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 1607 1608 /* Panasonic panels */ 1609 { .driver_data = MT_CLS_PANASONIC, 1610 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1611 USB_DEVICE_ID_PANABOARD_UBT780) }, 1612 { .driver_data = MT_CLS_PANASONIC, 1613 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 1614 USB_DEVICE_ID_PANABOARD_UBT880) }, 1615 1616 /* Novatek Panel */ 1617 { .driver_data = MT_CLS_NSMU, 1618 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 1619 USB_DEVICE_ID_NOVATEK_PCT) }, 1620 1621 /* Ntrig Panel */ 1622 { .driver_data = MT_CLS_NSMU, 1623 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, 1624 USB_VENDOR_ID_NTRIG, 0x1b05) }, 1625 1626 /* PixArt optical touch screen */ 1627 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1628 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1629 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 1630 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1631 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1632 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 1633 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 1634 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 1635 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 1636 1637 /* PixCir-based panels */ 1638 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 1639 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 1640 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 1641 1642 /* Quanta-based panels */ 1643 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1644 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1645 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1646 1647 /* Stantum panels */ 1648 { .driver_data = MT_CLS_CONFIDENCE, 1649 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1650 USB_DEVICE_ID_MTP_STM)}, 1651 1652 /* TopSeed panels */ 1653 { .driver_data = MT_CLS_TOPSEED, 1654 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1655 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1656 1657 /* Touch International panels */ 1658 { .driver_data = MT_CLS_NSMU, 1659 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1660 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1661 1662 /* Unitec panels */ 1663 { .driver_data = MT_CLS_NSMU, 1664 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1665 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1666 { .driver_data = MT_CLS_NSMU, 1667 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1668 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1669 1670 /* VTL panels */ 1671 { .driver_data = MT_CLS_VTL, 1672 MT_USB_DEVICE(USB_VENDOR_ID_VTL, 1673 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) }, 1674 1675 /* Wistron panels */ 1676 { .driver_data = MT_CLS_NSMU, 1677 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON, 1678 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) }, 1679 1680 /* XAT */ 1681 { .driver_data = MT_CLS_NSMU, 1682 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1683 USB_DEVICE_ID_XAT_CSR) }, 1684 1685 /* Xiroku */ 1686 { .driver_data = MT_CLS_NSMU, 1687 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1688 USB_DEVICE_ID_XIROKU_SPX) }, 1689 { .driver_data = MT_CLS_NSMU, 1690 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1691 USB_DEVICE_ID_XIROKU_MPX) }, 1692 { .driver_data = MT_CLS_NSMU, 1693 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1694 USB_DEVICE_ID_XIROKU_CSR) }, 1695 { .driver_data = MT_CLS_NSMU, 1696 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1697 USB_DEVICE_ID_XIROKU_SPX1) }, 1698 { .driver_data = MT_CLS_NSMU, 1699 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1700 USB_DEVICE_ID_XIROKU_MPX1) }, 1701 { .driver_data = MT_CLS_NSMU, 1702 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1703 USB_DEVICE_ID_XIROKU_CSR1) }, 1704 { .driver_data = MT_CLS_NSMU, 1705 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1706 USB_DEVICE_ID_XIROKU_SPX2) }, 1707 { .driver_data = MT_CLS_NSMU, 1708 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1709 USB_DEVICE_ID_XIROKU_MPX2) }, 1710 { .driver_data = MT_CLS_NSMU, 1711 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1712 USB_DEVICE_ID_XIROKU_CSR2) }, 1713 1714 /* Google MT devices */ 1715 { .driver_data = MT_CLS_GOOGLE, 1716 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, 1717 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) }, 1718 1719 /* Generic MT device */ 1720 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1721 1722 /* Generic Win 8 certified MT device */ 1723 { .driver_data = MT_CLS_WIN_8, 1724 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8, 1725 HID_ANY_ID, HID_ANY_ID) }, 1726 { } 1727 }; 1728 MODULE_DEVICE_TABLE(hid, mt_devices); 1729 1730 static const struct hid_usage_id mt_grabbed_usages[] = { 1731 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1732 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1733 }; 1734 1735 static struct hid_driver mt_driver = { 1736 .name = "hid-multitouch", 1737 .id_table = mt_devices, 1738 .probe = mt_probe, 1739 .remove = mt_remove, 1740 .input_mapping = mt_input_mapping, 1741 .input_mapped = mt_input_mapped, 1742 .input_configured = mt_input_configured, 1743 .feature_mapping = mt_feature_mapping, 1744 .usage_table = mt_grabbed_usages, 1745 .event = mt_event, 1746 .report = mt_report, 1747 #ifdef CONFIG_PM 1748 .reset_resume = mt_reset_resume, 1749 .resume = mt_resume, 1750 #endif 1751 }; 1752 module_hid_driver(mt_driver); 1753