drivers/hid/hid-lenovo.c

   1 /*
   2  *  HID driver for Lenovo:
   3  *  - ThinkPad USB Keyboard with TrackPoint (tpkbd)
   4  *  - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
   5  *  - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
   6  *
   7  *  Copyright (c) 2012 Bernhard Seibold
   8  *  Copyright (c) 2014 Jamie Lentin <jm@lentin.co.uk>
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the Free
  14  * Software Foundation; either version 2 of the License, or (at your option)
  15  * any later version.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/sysfs.h>
  20 #include <linux/device.h>
  21 #include <linux/hid.h>
  22 #include <linux/input.h>
  23 #include <linux/leds.h>
  24
  25 #include "hid-ids.h"
  26
  27 struct lenovo_drvdata_tpkbd {
  28         int led_state;
  29         struct led_classdev led_mute;
  30         struct led_classdev led_micmute;
  31         int press_to_select;
  32         int dragging;
  33         int release_to_select;
  34         int select_right;
  35         int sensitivity;
  36         int press_speed;
  37 };
  38
  39 struct lenovo_drvdata_cptkbd {
  40         u8 middlebutton_state; /* 0:Up, 1:Down (undecided), 2:Scrolling */
  41         bool fn_lock;
  42         int sensitivity;
  43 };
  44
  45 #define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
  46
  47 static const __u8 lenovo_pro_dock_need_fixup_collection[] = {
  48         0x05, 0x88,             /* Usage Page (Vendor Usage Page 0x88)  */
  49         0x09, 0x01,             /* Usage (Vendor Usage 0x01)            */
  50         0xa1, 0x01,             /* Collection (Application)             */
  51         0x85, 0x04,             /*  Report ID (4)                       */
  52         0x19, 0x00,             /*  Usage Minimum (0)                   */
  53         0x2a, 0xff, 0xff,       /*  Usage Maximum (65535)               */
  54 };
  55
  56 static __u8 *lenovo_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  57                 unsigned int *rsize)
  58 {
  59         switch (hdev->product) {
  60         case USB_DEVICE_ID_LENOVO_TPPRODOCK:
  61                 /* the fixups that need to be done:
  62                  *   - get a reasonable usage max for the vendor collection
  63                  *     0x8801 from the report ID 4
  64                  */
  65                 if (*rsize >= 153 &&
  66                     memcmp(&rdesc[140], lenovo_pro_dock_need_fixup_collection,
  67                           sizeof(lenovo_pro_dock_need_fixup_collection)) == 0) {
  68                         rdesc[151] = 0x01;
  69                         rdesc[152] = 0x00;
  70                 }
  71                 break;
  72         }
  73         return rdesc;
  74 }
  75
  76 static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
  77                 struct hid_input *hi, struct hid_field *field,
  78                 struct hid_usage *usage, unsigned long **bit, int *max)
  79 {
  80         if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
  81                 /* This sub-device contains trackpoint, mark it */
  82                 hid_set_drvdata(hdev, (void *)1);
  83                 map_key_clear(KEY_MICMUTE);
  84                 return 1;
  85         }
  86         return 0;
  87 }
  88
  89 static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
  90                 struct hid_input *hi, struct hid_field *field,
  91                 struct hid_usage *usage, unsigned long **bit, int *max)
  92 {
  93         /* HID_UP_LNVENDOR = USB, HID_UP_MSVENDOR = BT */
  94         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR ||
  95             (usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
  96                 switch (usage->hid & HID_USAGE) {
  97                 case 0x00f1: /* Fn-F4: Mic mute */
  98                         map_key_clear(KEY_MICMUTE);
  99                         return 1;
 100                 case 0x00f2: /* Fn-F5: Brightness down */
 101                         map_key_clear(KEY_BRIGHTNESSDOWN);
 102                         return 1;
 103                 case 0x00f3: /* Fn-F6: Brightness up */
 104                         map_key_clear(KEY_BRIGHTNESSUP);
 105                         return 1;
 106                 case 0x00f4: /* Fn-F7: External display (projector) */
 107                         map_key_clear(KEY_SWITCHVIDEOMODE);
 108                         return 1;
 109                 case 0x00f5: /* Fn-F8: Wireless */
 110                         map_key_clear(KEY_WLAN);
 111                         return 1;
 112                 case 0x00f6: /* Fn-F9: Control panel */
 113                         map_key_clear(KEY_CONFIG);
 114                         return 1;
 115                 case 0x00f8: /* Fn-F11: View open applications (3 boxes) */
 116                         map_key_clear(KEY_SCALE);
 117                         return 1;
 118                 case 0x00f9: /* Fn-F12: Open My computer (6 boxes) USB-only */
 119                         /* NB: This mapping is invented in raw_event below */
 120                         map_key_clear(KEY_FILE);
 121                         return 1;
 122                 case 0x00fa: /* Fn-Esc: Fn-lock toggle */
 123                         map_key_clear(KEY_FN_ESC);
 124                         return 1;
 125                 case 0x00fb: /* Middle mouse button (in native mode) */
 126                         map_key_clear(BTN_MIDDLE);
 127                         return 1;
 128                 }
 129         }
 130
 131         /* Compatibility middle/wheel mappings should be ignored */
 132         if (usage->hid == HID_GD_WHEEL)
 133                 return -1;
 134         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
 135                         (usage->hid & HID_USAGE) == 0x003)
 136                 return -1;
 137         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
 138                         (usage->hid & HID_USAGE) == 0x238)
 139                 return -1;
 140
 141         /* Map wheel emulation reports: 0xffa1 = USB, 0xff10 = BT */
 142         if ((usage->hid & HID_USAGE_PAGE) == 0xff100000 ||
 143             (usage->hid & HID_USAGE_PAGE) == 0xffa10000) {
 144                 field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
 145                 field->logical_minimum = -127;
 146                 field->logical_maximum = 127;
 147
 148                 switch (usage->hid & HID_USAGE) {
 149                 case 0x0000:
 150                         hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
 151                         return 1;
 152                 case 0x0001:
 153                         hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
 154                         return 1;
 155                 default:
 156                         return -1;
 157                 }
 158         }
 159
 160         return 0;
 161 }
 162
 163 static int lenovo_input_mapping(struct hid_device *hdev,
 164                 struct hid_input *hi, struct hid_field *field,
 165                 struct hid_usage *usage, unsigned long **bit, int *max)
 166 {
 167         switch (hdev->product) {
 168         case USB_DEVICE_ID_LENOVO_TPKBD:
 169                 return lenovo_input_mapping_tpkbd(hdev, hi, field,
 170                                                         usage, bit, max);
 171         case USB_DEVICE_ID_LENOVO_CUSBKBD:
 172         case USB_DEVICE_ID_LENOVO_CBTKBD:
 173                 return lenovo_input_mapping_cptkbd(hdev, hi, field,
 174                                                         usage, bit, max);
 175         default:
 176                 return 0;
 177         }
 178 }
 179
 180 #undef map_key_clear
 181
 182 /* Send a config command to the keyboard */
 183 static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
 184                         unsigned char byte2, unsigned char byte3)
 185 {
 186         int ret;
 187         unsigned char *buf;
 188
 189         buf = kzalloc(3, GFP_KERNEL);
 190         if (!buf)
 191                 return -ENOMEM;
 192
 193         buf[0] = 0x18;
 194         buf[1] = byte2;
 195         buf[2] = byte3;
 196
 197         switch (hdev->product) {
 198         case USB_DEVICE_ID_LENOVO_CUSBKBD:
 199                 ret = hid_hw_raw_request(hdev, 0x13, buf, 3,
 200                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
 201                 break;
 202         case USB_DEVICE_ID_LENOVO_CBTKBD:
 203                 ret = hid_hw_output_report(hdev, buf, 3);
 204                 break;
 205         default:
 206                 ret = -EINVAL;
 207                 break;
 208         }
 209
 210         kfree(buf);
 211
 212         return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
 213 }
 214
 215 static void lenovo_features_set_cptkbd(struct hid_device *hdev)
 216 {
 217         int ret;
 218         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 219
 220         ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);
 221         if (ret)
 222                 hid_err(hdev, "Fn-lock setting failed: %d\n", ret);
 223
 224         ret = lenovo_send_cmd_cptkbd(hdev, 0x02, cptkbd_data->sensitivity);
 225         if (ret)
 226                 hid_err(hdev, "Sensitivity setting failed: %d\n", ret);
 227 }
 228
 229 static ssize_t attr_fn_lock_show_cptkbd(struct device *dev,
 230                 struct device_attribute *attr,
 231                 char *buf)
 232 {
 233         struct hid_device *hdev = to_hid_device(dev);
 234         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 235
 236         return snprintf(buf, PAGE_SIZE, "%u\n", cptkbd_data->fn_lock);
 237 }
 238
 239 static ssize_t attr_fn_lock_store_cptkbd(struct device *dev,
 240                 struct device_attribute *attr,
 241                 const char *buf,
 242                 size_t count)
 243 {
 244         struct hid_device *hdev = to_hid_device(dev);
 245         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 246         int value;
 247
 248         if (kstrtoint(buf, 10, &value))
 249                 return -EINVAL;
 250         if (value < 0 || value > 1)
 251                 return -EINVAL;
 252
 253         cptkbd_data->fn_lock = !!value;
 254         lenovo_features_set_cptkbd(hdev);
 255
 256         return count;
 257 }
 258
 259 static ssize_t attr_sensitivity_show_cptkbd(struct device *dev,
 260                 struct device_attribute *attr,
 261                 char *buf)
 262 {
 263         struct hid_device *hdev = to_hid_device(dev);
 264         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 265
 266         return snprintf(buf, PAGE_SIZE, "%u\n",
 267                 cptkbd_data->sensitivity);
 268 }
 269
 270 static ssize_t attr_sensitivity_store_cptkbd(struct device *dev,
 271                 struct device_attribute *attr,
 272                 const char *buf,
 273                 size_t count)
 274 {
 275         struct hid_device *hdev = to_hid_device(dev);
 276         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 277         int value;
 278
 279         if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
 280                 return -EINVAL;
 281
 282         cptkbd_data->sensitivity = value;
 283         lenovo_features_set_cptkbd(hdev);
 284
 285         return count;
 286 }
 287
 288
 289 static struct device_attribute dev_attr_fn_lock_cptkbd =
 290         __ATTR(fn_lock, S_IWUSR | S_IRUGO,
 291                         attr_fn_lock_show_cptkbd,
 292                         attr_fn_lock_store_cptkbd);
 293
 294 static struct device_attribute dev_attr_sensitivity_cptkbd =
 295         __ATTR(sensitivity, S_IWUSR | S_IRUGO,
 296                         attr_sensitivity_show_cptkbd,
 297                         attr_sensitivity_store_cptkbd);
 298
 299
 300 static struct attribute *lenovo_attributes_cptkbd[] = {
 301         &dev_attr_fn_lock_cptkbd.attr,
 302         &dev_attr_sensitivity_cptkbd.attr,
 303         NULL
 304 };
 305
 306 static const struct attribute_group lenovo_attr_group_cptkbd = {
 307         .attrs = lenovo_attributes_cptkbd,
 308 };
 309
 310 static int lenovo_raw_event(struct hid_device *hdev,
 311                         struct hid_report *report, u8 *data, int size)
 312 {
 313         /*
 314          * Compact USB keyboard's Fn-F12 report holds down many other keys, and
 315          * its own key is outside the usage page range. Remove extra
 316          * keypresses and remap to inside usage page.
 317          */
 318         if (unlikely(hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
 319                         && size == 3
 320                         && data[0] == 0x15
 321                         && data[1] == 0x94
 322                         && data[2] == 0x01)) {
 323                 data[1] = 0x00;
 324                 data[2] = 0x01;
 325         }
 326
 327         return 0;
 328 }
 329
 330 static int lenovo_event_cptkbd(struct hid_device *hdev,
 331                 struct hid_field *field, struct hid_usage *usage, __s32 value)
 332 {
 333         struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
 334
 335         /* "wheel" scroll events */
 336         if (usage->type == EV_REL && (usage->code == REL_WHEEL ||
 337                         usage->code == REL_HWHEEL)) {
 338                 /* Scroll events disable middle-click event */
 339                 cptkbd_data->middlebutton_state = 2;
 340                 return 0;
 341         }
 342
 343         /* Middle click events */
 344         if (usage->type == EV_KEY && usage->code == BTN_MIDDLE) {
 345                 if (value == 1) {
 346                         cptkbd_data->middlebutton_state = 1;
 347                 } else if (value == 0) {
 348                         if (cptkbd_data->middlebutton_state == 1) {
 349                                 /* No scrolling inbetween, send middle-click */
 350                                 input_event(field->hidinput->input,
 351                                         EV_KEY, BTN_MIDDLE, 1);
 352                                 input_sync(field->hidinput->input);
 353                                 input_event(field->hidinput->input,
 354                                         EV_KEY, BTN_MIDDLE, 0);
 355                                 input_sync(field->hidinput->input);
 356                         }
 357                         cptkbd_data->middlebutton_state = 0;
 358                 }
 359                 return 1;
 360         }
 361
 362         return 0;
 363 }
 364
 365 static int lenovo_event(struct hid_device *hdev, struct hid_field *field,
 366                 struct hid_usage *usage, __s32 value)
 367 {
 368         switch (hdev->product) {
 369         case USB_DEVICE_ID_LENOVO_CUSBKBD:
 370         case USB_DEVICE_ID_LENOVO_CBTKBD:
 371                 return lenovo_event_cptkbd(hdev, field, usage, value);
 372         default:
 373                 return 0;
 374         }
 375 }
 376
 377 static int lenovo_features_set_tpkbd(struct hid_device *hdev)
 378 {
 379         struct hid_report *report;
 380         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 381
 382         report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4];
 383
 384         report->field[0]->value[0]  = data_pointer->press_to_select   ? 0x01 : 0x02;
 385         report->field[0]->value[0] |= data_pointer->dragging          ? 0x04 : 0x08;
 386         report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20;
 387         report->field[0]->value[0] |= data_pointer->select_right      ? 0x80 : 0x40;
 388         report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver
 389         report->field[2]->value[0] = data_pointer->sensitivity;
 390         report->field[3]->value[0] = data_pointer->press_speed;
 391
 392         hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
 393         return 0;
 394 }
 395
 396 static ssize_t attr_press_to_select_show_tpkbd(struct device *dev,
 397                 struct device_attribute *attr,
 398                 char *buf)
 399 {
 400         struct hid_device *hdev = to_hid_device(dev);
 401         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 402
 403         return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select);
 404 }
 405
 406 static ssize_t attr_press_to_select_store_tpkbd(struct device *dev,
 407                 struct device_attribute *attr,
 408                 const char *buf,
 409                 size_t count)
 410 {
 411         struct hid_device *hdev = to_hid_device(dev);
 412         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 413         int value;
 414
 415         if (kstrtoint(buf, 10, &value))
 416                 return -EINVAL;
 417         if (value < 0 || value > 1)
 418                 return -EINVAL;
 419
 420         data_pointer->press_to_select = value;
 421         lenovo_features_set_tpkbd(hdev);
 422
 423         return count;
 424 }
 425
 426 static ssize_t attr_dragging_show_tpkbd(struct device *dev,
 427                 struct device_attribute *attr,
 428                 char *buf)
 429 {
 430         struct hid_device *hdev = to_hid_device(dev);
 431         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 432
 433         return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging);
 434 }
 435
 436 static ssize_t attr_dragging_store_tpkbd(struct device *dev,
 437                 struct device_attribute *attr,
 438                 const char *buf,
 439                 size_t count)
 440 {
 441         struct hid_device *hdev = to_hid_device(dev);
 442         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 443         int value;
 444
 445         if (kstrtoint(buf, 10, &value))
 446                 return -EINVAL;
 447         if (value < 0 || value > 1)
 448                 return -EINVAL;
 449
 450         data_pointer->dragging = value;
 451         lenovo_features_set_tpkbd(hdev);
 452
 453         return count;
 454 }
 455
 456 static ssize_t attr_release_to_select_show_tpkbd(struct device *dev,
 457                 struct device_attribute *attr,
 458                 char *buf)
 459 {
 460         struct hid_device *hdev = to_hid_device(dev);
 461         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 462
 463         return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select);
 464 }
 465
 466 static ssize_t attr_release_to_select_store_tpkbd(struct device *dev,
 467                 struct device_attribute *attr,
 468                 const char *buf,
 469                 size_t count)
 470 {
 471         struct hid_device *hdev = to_hid_device(dev);
 472         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 473         int value;
 474
 475         if (kstrtoint(buf, 10, &value))
 476                 return -EINVAL;
 477         if (value < 0 || value > 1)
 478                 return -EINVAL;
 479
 480         data_pointer->release_to_select = value;
 481         lenovo_features_set_tpkbd(hdev);
 482
 483         return count;
 484 }
 485
 486 static ssize_t attr_select_right_show_tpkbd(struct device *dev,
 487                 struct device_attribute *attr,
 488                 char *buf)
 489 {
 490         struct hid_device *hdev = to_hid_device(dev);
 491         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 492
 493         return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right);
 494 }
 495
 496 static ssize_t attr_select_right_store_tpkbd(struct device *dev,
 497                 struct device_attribute *attr,
 498                 const char *buf,
 499                 size_t count)
 500 {
 501         struct hid_device *hdev = to_hid_device(dev);
 502         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 503         int value;
 504
 505         if (kstrtoint(buf, 10, &value))
 506                 return -EINVAL;
 507         if (value < 0 || value > 1)
 508                 return -EINVAL;
 509
 510         data_pointer->select_right = value;
 511         lenovo_features_set_tpkbd(hdev);
 512
 513         return count;
 514 }
 515
 516 static ssize_t attr_sensitivity_show_tpkbd(struct device *dev,
 517                 struct device_attribute *attr,
 518                 char *buf)
 519 {
 520         struct hid_device *hdev = to_hid_device(dev);
 521         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 522
 523         return snprintf(buf, PAGE_SIZE, "%u\n",
 524                 data_pointer->sensitivity);
 525 }
 526
 527 static ssize_t attr_sensitivity_store_tpkbd(struct device *dev,
 528                 struct device_attribute *attr,
 529                 const char *buf,
 530                 size_t count)
 531 {
 532         struct hid_device *hdev = to_hid_device(dev);
 533         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 534         int value;
 535
 536         if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
 537                 return -EINVAL;
 538
 539         data_pointer->sensitivity = value;
 540         lenovo_features_set_tpkbd(hdev);
 541
 542         return count;
 543 }
 544
 545 static ssize_t attr_press_speed_show_tpkbd(struct device *dev,
 546                 struct device_attribute *attr,
 547                 char *buf)
 548 {
 549         struct hid_device *hdev = to_hid_device(dev);
 550         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 551
 552         return snprintf(buf, PAGE_SIZE, "%u\n",
 553                 data_pointer->press_speed);
 554 }
 555
 556 static ssize_t attr_press_speed_store_tpkbd(struct device *dev,
 557                 struct device_attribute *attr,
 558                 const char *buf,
 559                 size_t count)
 560 {
 561         struct hid_device *hdev = to_hid_device(dev);
 562         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 563         int value;
 564
 565         if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
 566                 return -EINVAL;
 567
 568         data_pointer->press_speed = value;
 569         lenovo_features_set_tpkbd(hdev);
 570
 571         return count;
 572 }
 573
 574 static struct device_attribute dev_attr_press_to_select_tpkbd =
 575         __ATTR(press_to_select, S_IWUSR | S_IRUGO,
 576                         attr_press_to_select_show_tpkbd,
 577                         attr_press_to_select_store_tpkbd);
 578
 579 static struct device_attribute dev_attr_dragging_tpkbd =
 580         __ATTR(dragging, S_IWUSR | S_IRUGO,
 581                         attr_dragging_show_tpkbd,
 582                         attr_dragging_store_tpkbd);
 583
 584 static struct device_attribute dev_attr_release_to_select_tpkbd =
 585         __ATTR(release_to_select, S_IWUSR | S_IRUGO,
 586                         attr_release_to_select_show_tpkbd,
 587                         attr_release_to_select_store_tpkbd);
 588
 589 static struct device_attribute dev_attr_select_right_tpkbd =
 590         __ATTR(select_right, S_IWUSR | S_IRUGO,
 591                         attr_select_right_show_tpkbd,
 592                         attr_select_right_store_tpkbd);
 593
 594 static struct device_attribute dev_attr_sensitivity_tpkbd =
 595         __ATTR(sensitivity, S_IWUSR | S_IRUGO,
 596                         attr_sensitivity_show_tpkbd,
 597                         attr_sensitivity_store_tpkbd);
 598
 599 static struct device_attribute dev_attr_press_speed_tpkbd =
 600         __ATTR(press_speed, S_IWUSR | S_IRUGO,
 601                         attr_press_speed_show_tpkbd,
 602                         attr_press_speed_store_tpkbd);
 603
 604 static struct attribute *lenovo_attributes_tpkbd[] = {
 605         &dev_attr_press_to_select_tpkbd.attr,
 606         &dev_attr_dragging_tpkbd.attr,
 607         &dev_attr_release_to_select_tpkbd.attr,
 608         &dev_attr_select_right_tpkbd.attr,
 609         &dev_attr_sensitivity_tpkbd.attr,
 610         &dev_attr_press_speed_tpkbd.attr,
 611         NULL
 612 };
 613
 614 static const struct attribute_group lenovo_attr_group_tpkbd = {
 615         .attrs = lenovo_attributes_tpkbd,
 616 };
 617
 618 static enum led_brightness lenovo_led_brightness_get_tpkbd(
 619                         struct led_classdev *led_cdev)
 620 {
 621         struct device *dev = led_cdev->dev->parent;
 622         struct hid_device *hdev = to_hid_device(dev);
 623         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 624         int led_nr = 0;
 625
 626         if (led_cdev == &data_pointer->led_micmute)
 627                 led_nr = 1;
 628
 629         return data_pointer->led_state & (1 << led_nr)
 630                                 ? LED_FULL
 631                                 : LED_OFF;
 632 }
 633
 634 static void lenovo_led_brightness_set_tpkbd(struct led_classdev *led_cdev,
 635                         enum led_brightness value)
 636 {
 637         struct device *dev = led_cdev->dev->parent;
 638         struct hid_device *hdev = to_hid_device(dev);
 639         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 640         struct hid_report *report;
 641         int led_nr = 0;
 642
 643         if (led_cdev == &data_pointer->led_micmute)
 644                 led_nr = 1;
 645
 646         if (value == LED_OFF)
 647                 data_pointer->led_state &= ~(1 << led_nr);
 648         else
 649                 data_pointer->led_state |= 1 << led_nr;
 650
 651         report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3];
 652         report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1;
 653         report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1;
 654         hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
 655 }
 656
 657 static int lenovo_probe_tpkbd(struct hid_device *hdev)
 658 {
 659         struct device *dev = &hdev->dev;
 660         struct lenovo_drvdata_tpkbd *data_pointer;
 661         size_t name_sz = strlen(dev_name(dev)) + 16;
 662         char *name_mute, *name_micmute;
 663         int i;
 664         int ret;
 665
 666         /*
 667          * Only register extra settings against subdevice where input_mapping
 668          * set drvdata to 1, i.e. the trackpoint.
 669          */
 670         if (!hid_get_drvdata(hdev))
 671                 return 0;
 672
 673         hid_set_drvdata(hdev, NULL);
 674
 675         /* Validate required reports. */
 676         for (i = 0; i < 4; i++) {
 677                 if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
 678                         return -ENODEV;
 679         }
 680         if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
 681                 return -ENODEV;
 682
 683         ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
 684         if (ret)
 685                 hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
 686
 687         data_pointer = devm_kzalloc(&hdev->dev,
 688                                     sizeof(struct lenovo_drvdata_tpkbd),
 689                                     GFP_KERNEL);
 690         if (data_pointer == NULL) {
 691                 hid_err(hdev, "Could not allocate memory for driver data\n");
 692                 ret = -ENOMEM;
 693                 goto err;
 694         }
 695
 696         // set same default values as windows driver
 697         data_pointer->sensitivity = 0xa0;
 698         data_pointer->press_speed = 0x38;
 699
 700         name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
 701         name_micmute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
 702         if (name_mute == NULL || name_micmute == NULL) {
 703                 hid_err(hdev, "Could not allocate memory for led data\n");
 704                 ret = -ENOMEM;
 705                 goto err;
 706         }
 707         snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(dev));
 708         snprintf(name_micmute, name_sz, "%s:amber:micmute", dev_name(dev));
 709
 710         hid_set_drvdata(hdev, data_pointer);
 711
 712         data_pointer->led_mute.name = name_mute;
 713         data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd;
 714         data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd;
 715         data_pointer->led_mute.dev = dev;
 716         led_classdev_register(dev, &data_pointer->led_mute);
 717
 718         data_pointer->led_micmute.name = name_micmute;
 719         data_pointer->led_micmute.brightness_get =
 720                 lenovo_led_brightness_get_tpkbd;
 721         data_pointer->led_micmute.brightness_set =
 722                 lenovo_led_brightness_set_tpkbd;
 723         data_pointer->led_micmute.dev = dev;
 724         led_classdev_register(dev, &data_pointer->led_micmute);
 725
 726         lenovo_features_set_tpkbd(hdev);
 727
 728         return 0;
 729 err:
 730         sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
 731         return ret;
 732 }
 733
 734 static int lenovo_probe_cptkbd(struct hid_device *hdev)
 735 {
 736         int ret;
 737         struct lenovo_drvdata_cptkbd *cptkbd_data;
 738
 739         /* All the custom action happens on the USBMOUSE device for USB */
 740         if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
 741                         && hdev->type != HID_TYPE_USBMOUSE) {
 742                 hid_dbg(hdev, "Ignoring keyboard half of device\n");
 743                 return 0;
 744         }
 745
 746         cptkbd_data = devm_kzalloc(&hdev->dev,
 747                                         sizeof(*cptkbd_data),
 748                                         GFP_KERNEL);
 749         if (cptkbd_data == NULL) {
 750                 hid_err(hdev, "can't alloc keyboard descriptor\n");
 751                 return -ENOMEM;
 752         }
 753         hid_set_drvdata(hdev, cptkbd_data);
 754
 755         /*
 756          * Tell the keyboard a driver understands it, and turn F7, F9, F11 into
 757          * regular keys
 758          */
 759         ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03);
 760         if (ret)
 761                 hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);
 762
 763         /* Switch middle button to native mode */
 764         ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01);
 765         if (ret)
 766                 hid_warn(hdev, "Failed to switch middle button: %d\n", ret);
 767
 768         /* Set keyboard settings to known state */
 769         cptkbd_data->middlebutton_state = 0;
 770         cptkbd_data->fn_lock = true;
 771         cptkbd_data->sensitivity = 0x05;
 772         lenovo_features_set_cptkbd(hdev);
 773
 774         ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);
 775         if (ret)
 776                 hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
 777
 778         return 0;
 779 }
 780
 781 static int lenovo_probe(struct hid_device *hdev,
 782                 const struct hid_device_id *id)
 783 {
 784         int ret;
 785
 786         ret = hid_parse(hdev);
 787         if (ret) {
 788                 hid_err(hdev, "hid_parse failed\n");
 789                 goto err;
 790         }
 791
 792         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 793         if (ret) {
 794                 hid_err(hdev, "hid_hw_start failed\n");
 795                 goto err;
 796         }
 797
 798         switch (hdev->product) {
 799         case USB_DEVICE_ID_LENOVO_TPKBD:
 800                 ret = lenovo_probe_tpkbd(hdev);
 801                 break;
 802         case USB_DEVICE_ID_LENOVO_CUSBKBD:
 803         case USB_DEVICE_ID_LENOVO_CBTKBD:
 804                 ret = lenovo_probe_cptkbd(hdev);
 805                 break;
 806         default:
 807                 ret = 0;
 808                 break;
 809         }
 810         if (ret)
 811                 goto err_hid;
 812
 813         return 0;
 814 err_hid:
 815         hid_hw_stop(hdev);
 816 err:
 817         return ret;
 818 }
 819
 820 static void lenovo_remove_tpkbd(struct hid_device *hdev)
 821 {
 822         struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
 823
 824         /*
 825          * Only the trackpoint half of the keyboard has drvdata and stuff that
 826          * needs unregistering.
 827          */
 828         if (data_pointer == NULL)
 829                 return;
 830
 831         sysfs_remove_group(&hdev->dev.kobj,
 832                         &lenovo_attr_group_tpkbd);
 833
 834         led_classdev_unregister(&data_pointer->led_micmute);
 835         led_classdev_unregister(&data_pointer->led_mute);
 836
 837         hid_set_drvdata(hdev, NULL);
 838 }
 839
 840 static void lenovo_remove_cptkbd(struct hid_device *hdev)
 841 {
 842         sysfs_remove_group(&hdev->dev.kobj,
 843                         &lenovo_attr_group_cptkbd);
 844 }
 845
 846 static void lenovo_remove(struct hid_device *hdev)
 847 {
 848         switch (hdev->product) {
 849         case USB_DEVICE_ID_LENOVO_TPKBD:
 850                 lenovo_remove_tpkbd(hdev);
 851                 break;
 852         case USB_DEVICE_ID_LENOVO_CUSBKBD:
 853         case USB_DEVICE_ID_LENOVO_CBTKBD:
 854                 lenovo_remove_cptkbd(hdev);
 855                 break;
 856         }
 857
 858         hid_hw_stop(hdev);
 859 }
 860
 861 static int lenovo_input_configured(struct hid_device *hdev,
 862                 struct hid_input *hi)
 863 {
 864         switch (hdev->product) {
 865                 case USB_DEVICE_ID_LENOVO_TPKBD:
 866                 case USB_DEVICE_ID_LENOVO_CUSBKBD:
 867                 case USB_DEVICE_ID_LENOVO_CBTKBD:
 868                         if (test_bit(EV_REL, hi->input->evbit)) {
 869                                 /* set only for trackpoint device */
 870                                 __set_bit(INPUT_PROP_POINTER, hi->input->propbit);
 871                                 __set_bit(INPUT_PROP_POINTING_STICK,
 872                                                 hi->input->propbit);
 873                         }
 874                         break;
 875         }
 876
 877         return 0;
 878 }
 879
 880
 881 static const struct hid_device_id lenovo_devices[] = {
 882         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
 883         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
 884         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
 885         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
 886         { }
 887 };
 888
 889 MODULE_DEVICE_TABLE(hid, lenovo_devices);
 890
 891 static struct hid_driver lenovo_driver = {
 892         .name = "lenovo",
 893         .id_table = lenovo_devices,
 894         .input_configured = lenovo_input_configured,
 895         .input_mapping = lenovo_input_mapping,
 896         .probe = lenovo_probe,
 897         .remove = lenovo_remove,
 898         .raw_event = lenovo_raw_event,
 899         .event = lenovo_event,
 900         .report_fixup = lenovo_report_fixup,
 901 };
 902 module_hid_driver(lenovo_driver);
 903
 904 MODULE_LICENSE("GPL");