1 /* 2 * HID driver for multitouch panels 3 * 4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> 5 * Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com> 6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France 7 * 8 * This code is partly based on hid-egalax.c: 9 * 10 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> 11 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 12 * Copyright (c) 2010 Canonical, Ltd. 13 * 14 * This code is partly based on hid-3m-pct.c: 15 * 16 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> 17 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> 18 * Copyright (c) 2010 Canonical, Ltd. 19 * 20 */ 21 22 /* 23 * This program is free software; you can redistribute it and/or modify it 24 * under the terms of the GNU General Public License as published by the Free 25 * Software Foundation; either version 2 of the License, or (at your option) 26 * any later version. 27 */ 28 29 #include <linux/device.h> 30 #include <linux/hid.h> 31 #include <linux/module.h> 32 #include <linux/slab.h> 33 #include <linux/usb.h> 34 #include <linux/input/mt.h> 35 #include "usbhid/usbhid.h" 36 37 38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); 39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 40 MODULE_DESCRIPTION("HID multitouch panels"); 41 MODULE_LICENSE("GPL"); 42 43 #include "hid-ids.h" 44 45 /* quirks to control the device */ 46 #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0) 47 #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1) 48 #define MT_QUIRK_CYPRESS (1 << 2) 49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3) 50 #define MT_QUIRK_ALWAYS_VALID (1 << 4) 51 #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) 52 #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) 53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) 54 55 struct mt_slot { 56 __s32 x, y, p, w, h; 57 __s32 contactid; /* the device ContactID assigned to this slot */ 58 bool touch_state; /* is the touch valid? */ 59 bool seen_in_this_frame;/* has this slot been updated */ 60 }; 61 62 struct mt_class { 63 __s32 name; /* MT_CLS */ 64 __s32 quirks; 65 __s32 sn_move; /* Signal/noise ratio for move events */ 66 __s32 sn_width; /* Signal/noise ratio for width events */ 67 __s32 sn_height; /* Signal/noise ratio for height events */ 68 __s32 sn_pressure; /* Signal/noise ratio for pressure events */ 69 __u8 maxcontacts; 70 bool is_indirect; /* true for touchpads */ 71 }; 72 73 struct mt_fields { 74 unsigned usages[HID_MAX_FIELDS]; 75 unsigned int length; 76 }; 77 78 struct mt_device { 79 struct mt_slot curdata; /* placeholder of incoming data */ 80 struct mt_class mtclass; /* our mt device class */ 81 struct mt_fields *fields; /* temporary placeholder for storing the 82 multitouch fields */ 83 unsigned last_field_index; /* last field index of the report */ 84 unsigned last_slot_field; /* the last field of a slot */ 85 __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ 86 __s8 inputmode_index; /* InputMode HID feature index in the report */ 87 __s8 maxcontact_report_id; /* Maximum Contact Number HID feature, 88 -1 if non-existent */ 89 __u8 num_received; /* how many contacts we received */ 90 __u8 num_expected; /* expected last contact index */ 91 __u8 maxcontacts; 92 __u8 touches_by_report; /* how many touches are present in one report: 93 * 1 means we should use a serial protocol 94 * > 1 means hybrid (multitouch) protocol */ 95 bool curvalid; /* is the current contact valid? */ 96 struct mt_slot *slots; 97 }; 98 99 /* classes of device behavior */ 100 #define MT_CLS_DEFAULT 0x0001 101 102 #define MT_CLS_SERIAL 0x0002 103 #define MT_CLS_CONFIDENCE 0x0003 104 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 105 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 106 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 107 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 108 #define MT_CLS_DUAL_NSMU_CONTACTID 0x0008 109 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 110 111 /* vendor specific classes */ 112 #define MT_CLS_3M 0x0101 113 #define MT_CLS_CYPRESS 0x0102 114 #define MT_CLS_EGALAX 0x0103 115 #define MT_CLS_EGALAX_SERIAL 0x0104 116 #define MT_CLS_TOPSEED 0x0105 117 #define MT_CLS_PANASONIC 0x0106 118 119 #define MT_DEFAULT_MAXCONTACT 10 120 121 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) 122 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) 123 124 /* 125 * these device-dependent functions determine what slot corresponds 126 * to a valid contact that was just read. 127 */ 128 129 static int cypress_compute_slot(struct mt_device *td) 130 { 131 if (td->curdata.contactid != 0 || td->num_received == 0) 132 return td->curdata.contactid; 133 else 134 return -1; 135 } 136 137 static int find_slot_from_contactid(struct mt_device *td) 138 { 139 int i; 140 for (i = 0; i < td->maxcontacts; ++i) { 141 if (td->slots[i].contactid == td->curdata.contactid && 142 td->slots[i].touch_state) 143 return i; 144 } 145 for (i = 0; i < td->maxcontacts; ++i) { 146 if (!td->slots[i].seen_in_this_frame && 147 !td->slots[i].touch_state) 148 return i; 149 } 150 /* should not occurs. If this happens that means 151 * that the device sent more touches that it says 152 * in the report descriptor. It is ignored then. */ 153 return -1; 154 } 155 156 static struct mt_class mt_classes[] = { 157 { .name = MT_CLS_DEFAULT, 158 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, 159 { .name = MT_CLS_SERIAL, 160 .quirks = MT_QUIRK_ALWAYS_VALID}, 161 { .name = MT_CLS_CONFIDENCE, 162 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, 163 { .name = MT_CLS_CONFIDENCE_CONTACT_ID, 164 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 165 MT_QUIRK_SLOT_IS_CONTACTID }, 166 { .name = MT_CLS_CONFIDENCE_MINUS_ONE, 167 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 168 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, 169 { .name = MT_CLS_DUAL_INRANGE_CONTACTID, 170 .quirks = MT_QUIRK_VALID_IS_INRANGE | 171 MT_QUIRK_SLOT_IS_CONTACTID, 172 .maxcontacts = 2 }, 173 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 174 .quirks = MT_QUIRK_VALID_IS_INRANGE | 175 MT_QUIRK_SLOT_IS_CONTACTNUMBER, 176 .maxcontacts = 2 }, 177 { .name = MT_CLS_DUAL_NSMU_CONTACTID, 178 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 179 MT_QUIRK_SLOT_IS_CONTACTID, 180 .maxcontacts = 2 }, 181 { .name = MT_CLS_INRANGE_CONTACTNUMBER, 182 .quirks = MT_QUIRK_VALID_IS_INRANGE | 183 MT_QUIRK_SLOT_IS_CONTACTNUMBER }, 184 185 /* 186 * vendor specific classes 187 */ 188 { .name = MT_CLS_3M, 189 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | 190 MT_QUIRK_SLOT_IS_CONTACTID, 191 .sn_move = 2048, 192 .sn_width = 128, 193 .sn_height = 128 }, 194 { .name = MT_CLS_CYPRESS, 195 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | 196 MT_QUIRK_CYPRESS, 197 .maxcontacts = 10 }, 198 { .name = MT_CLS_EGALAX, 199 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 200 MT_QUIRK_VALID_IS_INRANGE, 201 .sn_move = 4096, 202 .sn_pressure = 32, 203 }, 204 { .name = MT_CLS_EGALAX_SERIAL, 205 .quirks = MT_QUIRK_SLOT_IS_CONTACTID | 206 MT_QUIRK_ALWAYS_VALID, 207 .sn_move = 4096, 208 .sn_pressure = 32, 209 }, 210 { .name = MT_CLS_TOPSEED, 211 .quirks = MT_QUIRK_ALWAYS_VALID, 212 .is_indirect = true, 213 .maxcontacts = 2, 214 }, 215 { .name = MT_CLS_PANASONIC, 216 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, 217 .maxcontacts = 4 }, 218 219 { } 220 }; 221 222 static ssize_t mt_show_quirks(struct device *dev, 223 struct device_attribute *attr, 224 char *buf) 225 { 226 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 227 struct mt_device *td = hid_get_drvdata(hdev); 228 229 return sprintf(buf, "%u\n", td->mtclass.quirks); 230 } 231 232 static ssize_t mt_set_quirks(struct device *dev, 233 struct device_attribute *attr, 234 const char *buf, size_t count) 235 { 236 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 237 struct mt_device *td = hid_get_drvdata(hdev); 238 239 unsigned long val; 240 241 if (kstrtoul(buf, 0, &val)) 242 return -EINVAL; 243 244 td->mtclass.quirks = val; 245 246 return count; 247 } 248 249 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); 250 251 static struct attribute *sysfs_attrs[] = { 252 &dev_attr_quirks.attr, 253 NULL 254 }; 255 256 static struct attribute_group mt_attribute_group = { 257 .attrs = sysfs_attrs 258 }; 259 260 static void mt_feature_mapping(struct hid_device *hdev, 261 struct hid_field *field, struct hid_usage *usage) 262 { 263 struct mt_device *td = hid_get_drvdata(hdev); 264 int i; 265 266 switch (usage->hid) { 267 case HID_DG_INPUTMODE: 268 td->inputmode = field->report->id; 269 td->inputmode_index = 0; /* has to be updated below */ 270 271 for (i=0; i < field->maxusage; i++) { 272 if (field->usage[i].hid == usage->hid) { 273 td->inputmode_index = i; 274 break; 275 } 276 } 277 278 break; 279 case HID_DG_CONTACTMAX: 280 td->maxcontact_report_id = field->report->id; 281 td->maxcontacts = field->value[0]; 282 if (td->mtclass.maxcontacts) 283 /* check if the maxcontacts is given by the class */ 284 td->maxcontacts = td->mtclass.maxcontacts; 285 286 break; 287 } 288 } 289 290 static void set_abs(struct input_dev *input, unsigned int code, 291 struct hid_field *field, int snratio) 292 { 293 int fmin = field->logical_minimum; 294 int fmax = field->logical_maximum; 295 int fuzz = snratio ? (fmax - fmin) / snratio : 0; 296 input_set_abs_params(input, code, fmin, fmax, fuzz, 0); 297 } 298 299 static void mt_store_field(struct hid_usage *usage, struct mt_device *td, 300 struct hid_input *hi) 301 { 302 struct mt_fields *f = td->fields; 303 304 if (f->length >= HID_MAX_FIELDS) 305 return; 306 307 f->usages[f->length++] = usage->hid; 308 } 309 310 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, 311 struct hid_field *field, struct hid_usage *usage, 312 unsigned long **bit, int *max) 313 { 314 struct mt_device *td = hid_get_drvdata(hdev); 315 struct mt_class *cls = &td->mtclass; 316 int code; 317 318 /* Only map fields from TouchScreen or TouchPad collections. 319 * We need to ignore fields that belong to other collections 320 * such as Mouse that might have the same GenericDesktop usages. */ 321 if (field->application == HID_DG_TOUCHSCREEN) 322 set_bit(INPUT_PROP_DIRECT, hi->input->propbit); 323 else if (field->application != HID_DG_TOUCHPAD) 324 return 0; 325 326 /* In case of an indirect device (touchpad), we need to add 327 * specific BTN_TOOL_* to be handled by the synaptics xorg 328 * driver. 329 * We also consider that touchscreens providing buttons are touchpads. 330 */ 331 if (field->application == HID_DG_TOUCHPAD || 332 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON || 333 cls->is_indirect) { 334 set_bit(INPUT_PROP_POINTER, hi->input->propbit); 335 set_bit(BTN_TOOL_FINGER, hi->input->keybit); 336 set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit); 337 set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit); 338 set_bit(BTN_TOOL_QUADTAP, hi->input->keybit); 339 } 340 341 /* eGalax devices provide a Digitizer.Stylus input which overrides 342 * the correct Digitizers.Finger X/Y ranges. 343 * Let's just ignore this input. */ 344 if (field->physical == HID_DG_STYLUS) 345 return -1; 346 347 switch (usage->hid & HID_USAGE_PAGE) { 348 349 case HID_UP_GENDESK: 350 switch (usage->hid) { 351 case HID_GD_X: 352 hid_map_usage(hi, usage, bit, max, 353 EV_ABS, ABS_MT_POSITION_X); 354 set_abs(hi->input, ABS_MT_POSITION_X, field, 355 cls->sn_move); 356 /* touchscreen emulation */ 357 set_abs(hi->input, ABS_X, field, cls->sn_move); 358 mt_store_field(usage, td, hi); 359 td->last_field_index = field->index; 360 return 1; 361 case HID_GD_Y: 362 hid_map_usage(hi, usage, bit, max, 363 EV_ABS, ABS_MT_POSITION_Y); 364 set_abs(hi->input, ABS_MT_POSITION_Y, field, 365 cls->sn_move); 366 /* touchscreen emulation */ 367 set_abs(hi->input, ABS_Y, field, cls->sn_move); 368 mt_store_field(usage, td, hi); 369 td->last_field_index = field->index; 370 return 1; 371 } 372 return 0; 373 374 case HID_UP_DIGITIZER: 375 switch (usage->hid) { 376 case HID_DG_INRANGE: 377 mt_store_field(usage, td, hi); 378 td->last_field_index = field->index; 379 return 1; 380 case HID_DG_CONFIDENCE: 381 mt_store_field(usage, td, hi); 382 td->last_field_index = field->index; 383 return 1; 384 case HID_DG_TIPSWITCH: 385 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); 386 input_set_capability(hi->input, EV_KEY, BTN_TOUCH); 387 mt_store_field(usage, td, hi); 388 td->last_field_index = field->index; 389 return 1; 390 case HID_DG_CONTACTID: 391 if (!td->maxcontacts) 392 td->maxcontacts = MT_DEFAULT_MAXCONTACT; 393 input_mt_init_slots(hi->input, td->maxcontacts); 394 mt_store_field(usage, td, hi); 395 td->last_field_index = field->index; 396 td->touches_by_report++; 397 return 1; 398 case HID_DG_WIDTH: 399 hid_map_usage(hi, usage, bit, max, 400 EV_ABS, ABS_MT_TOUCH_MAJOR); 401 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 402 cls->sn_width); 403 mt_store_field(usage, td, hi); 404 td->last_field_index = field->index; 405 return 1; 406 case HID_DG_HEIGHT: 407 hid_map_usage(hi, usage, bit, max, 408 EV_ABS, ABS_MT_TOUCH_MINOR); 409 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 410 cls->sn_height); 411 input_set_abs_params(hi->input, 412 ABS_MT_ORIENTATION, 0, 1, 0, 0); 413 mt_store_field(usage, td, hi); 414 td->last_field_index = field->index; 415 return 1; 416 case HID_DG_TIPPRESSURE: 417 hid_map_usage(hi, usage, bit, max, 418 EV_ABS, ABS_MT_PRESSURE); 419 set_abs(hi->input, ABS_MT_PRESSURE, field, 420 cls->sn_pressure); 421 /* touchscreen emulation */ 422 set_abs(hi->input, ABS_PRESSURE, field, 423 cls->sn_pressure); 424 mt_store_field(usage, td, hi); 425 td->last_field_index = field->index; 426 return 1; 427 case HID_DG_CONTACTCOUNT: 428 td->last_field_index = field->index; 429 return 1; 430 case HID_DG_CONTACTMAX: 431 /* we don't set td->last_slot_field as contactcount and 432 * contact max are global to the report */ 433 td->last_field_index = field->index; 434 return -1; 435 } 436 case HID_DG_TOUCH: 437 /* Legacy devices use TIPSWITCH and not TOUCH. 438 * Let's just ignore this field. */ 439 return -1; 440 /* let hid-input decide for the others */ 441 return 0; 442 443 case HID_UP_BUTTON: 444 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE); 445 hid_map_usage(hi, usage, bit, max, EV_KEY, code); 446 input_set_capability(hi->input, EV_KEY, code); 447 return 1; 448 449 case 0xff000000: 450 /* we do not want to map these: no input-oriented meaning */ 451 return -1; 452 } 453 454 return 0; 455 } 456 457 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, 458 struct hid_field *field, struct hid_usage *usage, 459 unsigned long **bit, int *max) 460 { 461 if (usage->type == EV_KEY || usage->type == EV_ABS) 462 set_bit(usage->type, hi->input->evbit); 463 464 return -1; 465 } 466 467 static int mt_compute_slot(struct mt_device *td) 468 { 469 __s32 quirks = td->mtclass.quirks; 470 471 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) 472 return td->curdata.contactid; 473 474 if (quirks & MT_QUIRK_CYPRESS) 475 return cypress_compute_slot(td); 476 477 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) 478 return td->num_received; 479 480 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) 481 return td->curdata.contactid - 1; 482 483 return find_slot_from_contactid(td); 484 } 485 486 /* 487 * this function is called when a whole contact has been processed, 488 * so that it can assign it to a slot and store the data there 489 */ 490 static void mt_complete_slot(struct mt_device *td) 491 { 492 td->curdata.seen_in_this_frame = true; 493 if (td->curvalid) { 494 int slotnum = mt_compute_slot(td); 495 496 if (slotnum >= 0 && slotnum < td->maxcontacts) 497 td->slots[slotnum] = td->curdata; 498 } 499 td->num_received++; 500 } 501 502 503 /* 504 * this function is called when a whole packet has been received and processed, 505 * so that it can decide what to send to the input layer. 506 */ 507 static void mt_emit_event(struct mt_device *td, struct input_dev *input) 508 { 509 int i; 510 511 for (i = 0; i < td->maxcontacts; ++i) { 512 struct mt_slot *s = &(td->slots[i]); 513 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && 514 !s->seen_in_this_frame) { 515 s->touch_state = false; 516 } 517 518 input_mt_slot(input, i); 519 input_mt_report_slot_state(input, MT_TOOL_FINGER, 520 s->touch_state); 521 if (s->touch_state) { 522 /* this finger is on the screen */ 523 int wide = (s->w > s->h); 524 /* divided by two to match visual scale of touch */ 525 int major = max(s->w, s->h) >> 1; 526 int minor = min(s->w, s->h) >> 1; 527 528 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); 529 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); 530 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); 531 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); 532 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); 533 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); 534 } 535 s->seen_in_this_frame = false; 536 537 } 538 539 input_mt_report_pointer_emulation(input, true); 540 input_sync(input); 541 td->num_received = 0; 542 } 543 544 545 546 static int mt_event(struct hid_device *hid, struct hid_field *field, 547 struct hid_usage *usage, __s32 value) 548 { 549 struct mt_device *td = hid_get_drvdata(hid); 550 __s32 quirks = td->mtclass.quirks; 551 552 if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { 553 switch (usage->hid) { 554 case HID_DG_INRANGE: 555 if (quirks & MT_QUIRK_ALWAYS_VALID) 556 td->curvalid = true; 557 else if (quirks & MT_QUIRK_VALID_IS_INRANGE) 558 td->curvalid = value; 559 break; 560 case HID_DG_TIPSWITCH: 561 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) 562 td->curvalid = value; 563 td->curdata.touch_state = value; 564 break; 565 case HID_DG_CONFIDENCE: 566 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) 567 td->curvalid = value; 568 break; 569 case HID_DG_CONTACTID: 570 td->curdata.contactid = value; 571 break; 572 case HID_DG_TIPPRESSURE: 573 td->curdata.p = value; 574 break; 575 case HID_GD_X: 576 td->curdata.x = value; 577 break; 578 case HID_GD_Y: 579 td->curdata.y = value; 580 break; 581 case HID_DG_WIDTH: 582 td->curdata.w = value; 583 break; 584 case HID_DG_HEIGHT: 585 td->curdata.h = value; 586 break; 587 case HID_DG_CONTACTCOUNT: 588 /* 589 * Includes multi-packet support where subsequent 590 * packets are sent with zero contactcount. 591 */ 592 if (value) 593 td->num_expected = value; 594 break; 595 case HID_DG_TOUCH: 596 /* do nothing */ 597 break; 598 599 default: 600 /* fallback to the generic hidinput handling */ 601 return 0; 602 } 603 604 if (usage->hid == td->last_slot_field) 605 mt_complete_slot(td); 606 607 if (field->index == td->last_field_index 608 && td->num_received >= td->num_expected) 609 mt_emit_event(td, field->hidinput->input); 610 611 } 612 613 /* we have handled the hidinput part, now remains hiddev */ 614 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) 615 hid->hiddev_hid_event(hid, field, usage, value); 616 617 return 1; 618 } 619 620 static void mt_set_input_mode(struct hid_device *hdev) 621 { 622 struct mt_device *td = hid_get_drvdata(hdev); 623 struct hid_report *r; 624 struct hid_report_enum *re; 625 626 if (td->inputmode < 0) 627 return; 628 629 re = &(hdev->report_enum[HID_FEATURE_REPORT]); 630 r = re->report_id_hash[td->inputmode]; 631 if (r) { 632 r->field[0]->value[td->inputmode_index] = 0x02; 633 usbhid_submit_report(hdev, r, USB_DIR_OUT); 634 } 635 } 636 637 static void mt_set_maxcontacts(struct hid_device *hdev) 638 { 639 struct mt_device *td = hid_get_drvdata(hdev); 640 struct hid_report *r; 641 struct hid_report_enum *re; 642 int fieldmax, max; 643 644 if (td->maxcontact_report_id < 0) 645 return; 646 647 if (!td->mtclass.maxcontacts) 648 return; 649 650 re = &hdev->report_enum[HID_FEATURE_REPORT]; 651 r = re->report_id_hash[td->maxcontact_report_id]; 652 if (r) { 653 max = td->mtclass.maxcontacts; 654 fieldmax = r->field[0]->logical_maximum; 655 max = min(fieldmax, max); 656 if (r->field[0]->value[0] != max) { 657 r->field[0]->value[0] = max; 658 usbhid_submit_report(hdev, r, USB_DIR_OUT); 659 } 660 } 661 } 662 663 static void mt_post_parse_default_settings(struct mt_device *td) 664 { 665 __s32 quirks = td->mtclass.quirks; 666 667 /* unknown serial device needs special quirks */ 668 if (td->touches_by_report == 1) { 669 quirks |= MT_QUIRK_ALWAYS_VALID; 670 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP; 671 quirks &= ~MT_QUIRK_VALID_IS_INRANGE; 672 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE; 673 } 674 675 td->mtclass.quirks = quirks; 676 } 677 678 static void mt_post_parse(struct mt_device *td) 679 { 680 struct mt_fields *f = td->fields; 681 682 if (td->touches_by_report > 0) { 683 int field_count_per_touch = f->length / td->touches_by_report; 684 td->last_slot_field = f->usages[field_count_per_touch - 1]; 685 } 686 } 687 688 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) 689 { 690 int ret, i; 691 struct mt_device *td; 692 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ 693 694 if (id) { 695 for (i = 0; mt_classes[i].name ; i++) { 696 if (id->driver_data == mt_classes[i].name) { 697 mtclass = &(mt_classes[i]); 698 break; 699 } 700 } 701 } 702 703 /* This allows the driver to correctly support devices 704 * that emit events over several HID messages. 705 */ 706 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 707 708 td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); 709 if (!td) { 710 dev_err(&hdev->dev, "cannot allocate multitouch data\n"); 711 return -ENOMEM; 712 } 713 td->mtclass = *mtclass; 714 td->inputmode = -1; 715 td->maxcontact_report_id = -1; 716 hid_set_drvdata(hdev, td); 717 718 td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL); 719 if (!td->fields) { 720 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); 721 ret = -ENOMEM; 722 goto fail; 723 } 724 725 ret = hid_parse(hdev); 726 if (ret != 0) 727 goto fail; 728 729 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 730 if (ret) 731 goto fail; 732 733 mt_post_parse(td); 734 735 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) 736 mt_post_parse_default_settings(td); 737 738 td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), 739 GFP_KERNEL); 740 if (!td->slots) { 741 dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); 742 hid_hw_stop(hdev); 743 ret = -ENOMEM; 744 goto fail; 745 } 746 747 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); 748 749 mt_set_maxcontacts(hdev); 750 mt_set_input_mode(hdev); 751 752 kfree(td->fields); 753 td->fields = NULL; 754 755 return 0; 756 757 fail: 758 kfree(td->fields); 759 kfree(td); 760 return ret; 761 } 762 763 #ifdef CONFIG_PM 764 static int mt_reset_resume(struct hid_device *hdev) 765 { 766 mt_set_maxcontacts(hdev); 767 mt_set_input_mode(hdev); 768 return 0; 769 } 770 #endif 771 772 static void mt_remove(struct hid_device *hdev) 773 { 774 struct mt_device *td = hid_get_drvdata(hdev); 775 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); 776 hid_hw_stop(hdev); 777 kfree(td->slots); 778 kfree(td); 779 hid_set_drvdata(hdev, NULL); 780 } 781 782 static const struct hid_device_id mt_devices[] = { 783 784 /* 3M panels */ 785 { .driver_data = MT_CLS_3M, 786 MT_USB_DEVICE(USB_VENDOR_ID_3M, 787 USB_DEVICE_ID_3M1968) }, 788 { .driver_data = MT_CLS_3M, 789 MT_USB_DEVICE(USB_VENDOR_ID_3M, 790 USB_DEVICE_ID_3M2256) }, 791 { .driver_data = MT_CLS_3M, 792 MT_USB_DEVICE(USB_VENDOR_ID_3M, 793 USB_DEVICE_ID_3M3266) }, 794 795 /* ActionStar panels */ 796 { .driver_data = MT_CLS_DEFAULT, 797 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, 798 USB_DEVICE_ID_ACTIONSTAR_1011) }, 799 800 /* Atmel panels */ 801 { .driver_data = MT_CLS_SERIAL, 802 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 803 USB_DEVICE_ID_ATMEL_MULTITOUCH) }, 804 { .driver_data = MT_CLS_SERIAL, 805 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL, 806 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) }, 807 808 /* Baanto multitouch devices */ 809 { .driver_data = MT_CLS_DEFAULT, 810 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO, 811 USB_DEVICE_ID_BAANTO_MT_190W2) }, 812 /* Cando panels */ 813 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 814 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 815 USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, 816 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 817 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 818 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, 819 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 820 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 821 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, 822 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 823 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 824 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, 825 826 /* Chunghwa Telecom touch panels */ 827 { .driver_data = MT_CLS_DEFAULT, 828 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, 829 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, 830 831 /* CVTouch panels */ 832 { .driver_data = MT_CLS_DEFAULT, 833 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, 834 USB_DEVICE_ID_CVTOUCH_SCREEN) }, 835 836 /* Cypress panel */ 837 { .driver_data = MT_CLS_CYPRESS, 838 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, 839 USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, 840 841 /* eGalax devices (resistive) */ 842 { .driver_data = MT_CLS_EGALAX, 843 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 844 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, 845 { .driver_data = MT_CLS_EGALAX, 846 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 847 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, 848 849 /* eGalax devices (capacitive) */ 850 { .driver_data = MT_CLS_EGALAX, 851 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 852 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, 853 { .driver_data = MT_CLS_EGALAX_SERIAL, 854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) }, 856 { .driver_data = MT_CLS_EGALAX_SERIAL, 857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) }, 859 { .driver_data = MT_CLS_EGALAX_SERIAL, 860 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) }, 862 { .driver_data = MT_CLS_EGALAX_SERIAL, 863 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 864 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) }, 865 { .driver_data = MT_CLS_EGALAX, 866 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 867 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, 868 { .driver_data = MT_CLS_EGALAX_SERIAL, 869 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 870 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) }, 871 { .driver_data = MT_CLS_EGALAX, 872 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 873 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, 874 { .driver_data = MT_CLS_EGALAX_SERIAL, 875 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 876 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) }, 877 { .driver_data = MT_CLS_EGALAX, 878 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, 880 { .driver_data = MT_CLS_EGALAX, 881 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 882 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, 883 { .driver_data = MT_CLS_EGALAX_SERIAL, 884 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 885 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) }, 886 { .driver_data = MT_CLS_EGALAX_SERIAL, 887 MT_USB_DEVICE(USB_VENDOR_ID_DWAV, 888 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, 889 890 /* Elo TouchSystems IntelliTouch Plus panel */ 891 { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, 892 MT_USB_DEVICE(USB_VENDOR_ID_ELO, 893 USB_DEVICE_ID_ELO_TS2515) }, 894 895 /* GeneralTouch panel */ 896 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, 897 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 898 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, 899 900 /* Gametel game controller */ 901 { .driver_data = MT_CLS_DEFAULT, 902 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, 903 USB_DEVICE_ID_GAMETEL_MT_MODE) }, 904 905 /* GoodTouch panels */ 906 { .driver_data = MT_CLS_DEFAULT, 907 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, 908 USB_DEVICE_ID_GOODTOUCH_000f) }, 909 910 /* Hanvon panels */ 911 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 912 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, 913 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) }, 914 915 /* Ideacom panel */ 916 { .driver_data = MT_CLS_SERIAL, 917 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM, 918 USB_DEVICE_ID_IDEACOM_IDC6650) }, 919 { .driver_data = MT_CLS_SERIAL, 920 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM, 921 USB_DEVICE_ID_IDEACOM_IDC6651) }, 922 923 /* Ilitek dual touch panel */ 924 { .driver_data = MT_CLS_DEFAULT, 925 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK, 926 USB_DEVICE_ID_ILITEK_MULTITOUCH) }, 927 928 /* IRTOUCH panels */ 929 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 930 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, 931 USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, 932 933 /* LG Display panels */ 934 { .driver_data = MT_CLS_DEFAULT, 935 MT_USB_DEVICE(USB_VENDOR_ID_LG, 936 USB_DEVICE_ID_LG_MULTITOUCH) }, 937 938 /* Lumio panels */ 939 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 940 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO, 941 USB_DEVICE_ID_CRYSTALTOUCH) }, 942 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 943 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO, 944 USB_DEVICE_ID_CRYSTALTOUCH_DUAL) }, 945 946 /* MosArt panels */ 947 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 948 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 949 USB_DEVICE_ID_ASUS_T91MT)}, 950 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 951 MT_USB_DEVICE(USB_VENDOR_ID_ASUS, 952 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, 953 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, 954 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, 955 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, 956 957 /* Panasonic panels */ 958 { .driver_data = MT_CLS_PANASONIC, 959 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 960 USB_DEVICE_ID_PANABOARD_UBT780) }, 961 { .driver_data = MT_CLS_PANASONIC, 962 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, 963 USB_DEVICE_ID_PANABOARD_UBT880) }, 964 965 /* Novatek Panel */ 966 { .driver_data = MT_CLS_DEFAULT, 967 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK, 968 USB_DEVICE_ID_NOVATEK_PCT) }, 969 970 /* PenMount panels */ 971 { .driver_data = MT_CLS_CONFIDENCE, 972 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, 973 USB_DEVICE_ID_PENMOUNT_PCI) }, 974 975 /* PixArt optical touch screen */ 976 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 977 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 978 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) }, 979 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 980 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 981 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) }, 982 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER, 983 MT_USB_DEVICE(USB_VENDOR_ID_PIXART, 984 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) }, 985 986 /* PixCir-based panels */ 987 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 988 MT_USB_DEVICE(USB_VENDOR_ID_HANVON, 989 USB_DEVICE_ID_HANVON_MULTITOUCH) }, 990 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, 991 MT_USB_DEVICE(USB_VENDOR_ID_CANDO, 992 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, 993 994 /* Quanta-based panels */ 995 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 996 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 997 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) }, 998 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 999 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1000 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, 1001 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, 1002 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA, 1003 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) }, 1004 1005 /* Stantum panels */ 1006 { .driver_data = MT_CLS_CONFIDENCE, 1007 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM, 1008 USB_DEVICE_ID_MTP)}, 1009 { .driver_data = MT_CLS_CONFIDENCE, 1010 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, 1011 USB_DEVICE_ID_MTP_STM)}, 1012 { .driver_data = MT_CLS_CONFIDENCE, 1013 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, 1014 USB_DEVICE_ID_MTP_SITRONIX)}, 1015 1016 /* TopSeed panels */ 1017 { .driver_data = MT_CLS_TOPSEED, 1018 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, 1019 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) }, 1020 1021 /* Touch International panels */ 1022 { .driver_data = MT_CLS_DEFAULT, 1023 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, 1024 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, 1025 1026 /* Unitec panels */ 1027 { .driver_data = MT_CLS_DEFAULT, 1028 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1029 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, 1030 { .driver_data = MT_CLS_DEFAULT, 1031 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC, 1032 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, 1033 /* XAT */ 1034 { .driver_data = MT_CLS_DEFAULT, 1035 MT_USB_DEVICE(USB_VENDOR_ID_XAT, 1036 USB_DEVICE_ID_XAT_CSR) }, 1037 1038 /* Xiroku */ 1039 { .driver_data = MT_CLS_DEFAULT, 1040 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1041 USB_DEVICE_ID_XIROKU_SPX) }, 1042 { .driver_data = MT_CLS_DEFAULT, 1043 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1044 USB_DEVICE_ID_XIROKU_MPX) }, 1045 { .driver_data = MT_CLS_DEFAULT, 1046 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1047 USB_DEVICE_ID_XIROKU_CSR) }, 1048 { .driver_data = MT_CLS_DEFAULT, 1049 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1050 USB_DEVICE_ID_XIROKU_SPX1) }, 1051 { .driver_data = MT_CLS_DEFAULT, 1052 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1053 USB_DEVICE_ID_XIROKU_MPX1) }, 1054 { .driver_data = MT_CLS_DEFAULT, 1055 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1056 USB_DEVICE_ID_XIROKU_CSR1) }, 1057 { .driver_data = MT_CLS_DEFAULT, 1058 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1059 USB_DEVICE_ID_XIROKU_SPX2) }, 1060 { .driver_data = MT_CLS_DEFAULT, 1061 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1062 USB_DEVICE_ID_XIROKU_MPX2) }, 1063 { .driver_data = MT_CLS_DEFAULT, 1064 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, 1065 USB_DEVICE_ID_XIROKU_CSR2) }, 1066 1067 /* Zytronic panels */ 1068 { .driver_data = MT_CLS_SERIAL, 1069 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC, 1070 USB_DEVICE_ID_ZYTRONIC_ZXY100) }, 1071 1072 /* Generic MT device */ 1073 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) }, 1074 { } 1075 }; 1076 MODULE_DEVICE_TABLE(hid, mt_devices); 1077 1078 static const struct hid_usage_id mt_grabbed_usages[] = { 1079 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, 1080 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} 1081 }; 1082 1083 static struct hid_driver mt_driver = { 1084 .name = "hid-multitouch", 1085 .id_table = mt_devices, 1086 .probe = mt_probe, 1087 .remove = mt_remove, 1088 .input_mapping = mt_input_mapping, 1089 .input_mapped = mt_input_mapped, 1090 .feature_mapping = mt_feature_mapping, 1091 .usage_table = mt_grabbed_usages, 1092 .event = mt_event, 1093 #ifdef CONFIG_PM 1094 .reset_resume = mt_reset_resume, 1095 #endif 1096 }; 1097 1098 static int __init mt_init(void) 1099 { 1100 return hid_register_driver(&mt_driver); 1101 } 1102 1103 static void __exit mt_exit(void) 1104 { 1105 hid_unregister_driver(&mt_driver); 1106 } 1107 1108 module_init(mt_init); 1109 module_exit(mt_exit); 1110