drivers/hid/hid-asus.c

   1 /*
   2  *  HID driver for Asus notebook built-in keyboard.
   3  *  Fixes small logical maximum to match usage maximum.
   4  *
   5  *  Currently supported devices are:
   6  *    EeeBook X205TA
   7  *    VivoBook E200HA
   8  *
   9  *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
  10  *
  11  *  This module based on hid-ortek by
  12  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
  13  *  Copyright (c) 2011 Jiri Kosina
  14  *
  15  *  This module has been updated to add support for Asus i2c touchpad.
  16  *
  17  *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
  18  *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
  19  *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
  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/hid.h>
  30 #include <linux/module.h>
  31 #include <linux/input/mt.h>
  32
  33 #include "hid-ids.h"
  34
  35 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
  36 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
  37 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
  38 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
  39 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
  40
  41 #define FEATURE_REPORT_ID 0x0d
  42 #define INPUT_REPORT_ID 0x5d
  43 #define FEATURE_KBD_REPORT_ID 0x5a
  44
  45 #define INPUT_REPORT_SIZE 28
  46 #define FEATURE_KBD_REPORT_SIZE 16
  47
  48 #define SUPPORT_KBD_BACKLIGHT BIT(0)
  49
  50 #define MAX_CONTACTS 5
  51
  52 #define MAX_X 2794
  53 #define MAX_Y 1758
  54 #define MAX_TOUCH_MAJOR 8
  55 #define MAX_PRESSURE 128
  56
  57 #define CONTACT_DATA_SIZE 5
  58
  59 #define BTN_LEFT_MASK 0x01
  60 #define CONTACT_TOOL_TYPE_MASK 0x80
  61 #define CONTACT_X_MSB_MASK 0xf0
  62 #define CONTACT_Y_MSB_MASK 0x0f
  63 #define CONTACT_TOUCH_MAJOR_MASK 0x07
  64 #define CONTACT_PRESSURE_MASK 0x7f
  65
  66 #define QUIRK_FIX_NOTEBOOK_REPORT       BIT(0)
  67 #define QUIRK_NO_INIT_REPORTS           BIT(1)
  68 #define QUIRK_SKIP_INPUT_MAPPING        BIT(2)
  69 #define QUIRK_IS_MULTITOUCH             BIT(3)
  70 #define QUIRK_NO_CONSUMER_USAGES        BIT(4)
  71 #define QUIRK_USE_KBD_BACKLIGHT         BIT(5)
  72 #define QUIRK_T100_KEYBOARD             BIT(6)
  73
  74 #define I2C_KEYBOARD_QUIRKS                     (QUIRK_FIX_NOTEBOOK_REPORT | \
  75                                                  QUIRK_NO_INIT_REPORTS | \
  76                                                  QUIRK_NO_CONSUMER_USAGES)
  77 #define I2C_TOUCHPAD_QUIRKS                     (QUIRK_NO_INIT_REPORTS | \
  78                                                  QUIRK_SKIP_INPUT_MAPPING | \
  79                                                  QUIRK_IS_MULTITOUCH)
  80
  81 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
  82
  83 struct asus_kbd_leds {
  84         struct led_classdev cdev;
  85         struct hid_device *hdev;
  86         struct work_struct work;
  87         unsigned int brightness;
  88         bool removed;
  89 };
  90
  91 struct asus_drvdata {
  92         unsigned long quirks;
  93         struct input_dev *input;
  94         struct asus_kbd_leds *kbd_backlight;
  95         bool enable_backlight;
  96 };
  97
  98 static void asus_report_contact_down(struct input_dev *input,
  99                 int toolType, u8 *data)
 100 {
 101         int touch_major, pressure;
 102         int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 103         int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
 104
 105         if (toolType == MT_TOOL_PALM) {
 106                 touch_major = MAX_TOUCH_MAJOR;
 107                 pressure = MAX_PRESSURE;
 108         } else {
 109                 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 110                 pressure = data[4] & CONTACT_PRESSURE_MASK;
 111         }
 112
 113         input_report_abs(input, ABS_MT_POSITION_X, x);
 114         input_report_abs(input, ABS_MT_POSITION_Y, y);
 115         input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 116         input_report_abs(input, ABS_MT_PRESSURE, pressure);
 117 }
 118
 119 /* Required for Synaptics Palm Detection */
 120 static void asus_report_tool_width(struct input_dev *input)
 121 {
 122         struct input_mt *mt = input->mt;
 123         struct input_mt_slot *oldest;
 124         int oldid, count, i;
 125
 126         oldest = NULL;
 127         oldid = mt->trkid;
 128         count = 0;
 129
 130         for (i = 0; i < mt->num_slots; ++i) {
 131                 struct input_mt_slot *ps = &mt->slots[i];
 132                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
 133
 134                 if (id < 0)
 135                         continue;
 136                 if ((id - oldid) & TRKID_SGN) {
 137                         oldest = ps;
 138                         oldid = id;
 139                 }
 140                 count++;
 141         }
 142
 143         if (oldest) {
 144                 input_report_abs(input, ABS_TOOL_WIDTH,
 145                         input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 146         }
 147 }
 148
 149 static void asus_report_input(struct input_dev *input, u8 *data)
 150 {
 151         int i;
 152         u8 *contactData = data + 2;
 153
 154         for (i = 0; i < MAX_CONTACTS; i++) {
 155                 bool down = !!(data[1] & BIT(i+3));
 156                 int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 157                                                 MT_TOOL_PALM : MT_TOOL_FINGER;
 158
 159                 input_mt_slot(input, i);
 160                 input_mt_report_slot_state(input, toolType, down);
 161
 162                 if (down) {
 163                         asus_report_contact_down(input, toolType, contactData);
 164                         contactData += CONTACT_DATA_SIZE;
 165                 }
 166         }
 167
 168         input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 169         asus_report_tool_width(input);
 170
 171         input_mt_sync_frame(input);
 172         input_sync(input);
 173 }
 174
 175 static int asus_raw_event(struct hid_device *hdev,
 176                 struct hid_report *report, u8 *data, int size)
 177 {
 178         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 179
 180         if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
 181                                          data[0] == INPUT_REPORT_ID &&
 182                                                 size == INPUT_REPORT_SIZE) {
 183                 asus_report_input(drvdata->input, data);
 184                 return 1;
 185         }
 186
 187         return 0;
 188 }
 189
 190 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
 191 {
 192         unsigned char *dmabuf;
 193         int ret;
 194
 195         dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
 196         if (!dmabuf)
 197                 return -ENOMEM;
 198
 199         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
 200                                  buf_size, HID_FEATURE_REPORT,
 201                                  HID_REQ_SET_REPORT);
 202         kfree(dmabuf);
 203
 204         return ret;
 205 }
 206
 207 static int asus_kbd_init(struct hid_device *hdev)
 208 {
 209         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
 210                      0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 211         int ret;
 212
 213         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 214         if (ret < 0)
 215                 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
 216
 217         return ret;
 218 }
 219
 220 static int asus_kbd_get_functions(struct hid_device *hdev,
 221                                   unsigned char *kbd_func)
 222 {
 223         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
 224         u8 *readbuf;
 225         int ret;
 226
 227         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 228         if (ret < 0) {
 229                 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
 230                 return ret;
 231         }
 232
 233         readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
 234         if (!readbuf)
 235                 return -ENOMEM;
 236
 237         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
 238                                  FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
 239                                  HID_REQ_GET_REPORT);
 240         if (ret < 0) {
 241                 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
 242                 kfree(readbuf);
 243                 return ret;
 244         }
 245
 246         *kbd_func = readbuf[6];
 247
 248         kfree(readbuf);
 249         return ret;
 250 }
 251
 252 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
 253                                    enum led_brightness brightness)
 254 {
 255         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 256                                                  cdev);
 257         if (led->brightness == brightness)
 258                 return;
 259
 260         led->brightness = brightness;
 261         schedule_work(&led->work);
 262 }
 263
 264 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
 265 {
 266         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 267                                                  cdev);
 268
 269         return led->brightness;
 270 }
 271
 272 static void asus_kbd_backlight_work(struct work_struct *work)
 273 {
 274         struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
 275         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
 276         int ret;
 277
 278         if (led->removed)
 279                 return;
 280
 281         buf[4] = led->brightness;
 282
 283         ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
 284         if (ret < 0)
 285                 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
 286 }
 287
 288 static int asus_kbd_register_leds(struct hid_device *hdev)
 289 {
 290         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 291         unsigned char kbd_func;
 292         int ret;
 293
 294         /* Initialize keyboard */
 295         ret = asus_kbd_init(hdev);
 296         if (ret < 0)
 297                 return ret;
 298
 299         /* Get keyboard functions */
 300         ret = asus_kbd_get_functions(hdev, &kbd_func);
 301         if (ret < 0)
 302                 return ret;
 303
 304         /* Check for backlight support */
 305         if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
 306                 return -ENODEV;
 307
 308         drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
 309                                               sizeof(struct asus_kbd_leds),
 310                                               GFP_KERNEL);
 311         if (!drvdata->kbd_backlight)
 312                 return -ENOMEM;
 313
 314         drvdata->kbd_backlight->removed = false;
 315         drvdata->kbd_backlight->brightness = 0;
 316         drvdata->kbd_backlight->hdev = hdev;
 317         drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
 318         drvdata->kbd_backlight->cdev.max_brightness = 3;
 319         drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
 320         drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
 321         INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
 322
 323         ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
 324         if (ret < 0) {
 325                 /* No need to have this still around */
 326                 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
 327         }
 328
 329         return ret;
 330 }
 331
 332 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 333 {
 334         struct input_dev *input = hi->input;
 335         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 336
 337         if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
 338                 int ret;
 339
 340                 input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
 341                 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
 342                 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
 343                 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
 344                 input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);
 345
 346                 __set_bit(BTN_LEFT, input->keybit);
 347                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 348
 349                 ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);
 350
 351                 if (ret) {
 352                         hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 353                         return ret;
 354                 }
 355         }
 356
 357         drvdata->input = input;
 358
 359         if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
 360                 hid_warn(hdev, "Failed to initialize backlight.\n");
 361
 362         return 0;
 363 }
 364
 365 #define asus_map_key_clear(c)   hid_map_usage_clear(hi, usage, bit, \
 366                                                     max, EV_KEY, (c))
 367 static int asus_input_mapping(struct hid_device *hdev,
 368                 struct hid_input *hi, struct hid_field *field,
 369                 struct hid_usage *usage, unsigned long **bit,
 370                 int *max)
 371 {
 372         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 373
 374         if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 375                 /* Don't map anything from the HID report.
 376                  * We do it all manually in asus_input_configured
 377                  */
 378                 return -1;
 379         }
 380
 381         /* ASUS-specific keyboard hotkeys */
 382         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
 383                 set_bit(EV_REP, hi->input->evbit);
 384                 switch (usage->hid & HID_USAGE) {
 385                 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
 386                 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);                break;
 387                 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);         break;
 388                 case 0x6c: asus_map_key_clear(KEY_SLEEP);               break;
 389                 case 0x82: asus_map_key_clear(KEY_CAMERA);              break;
 390                 case 0x88: asus_map_key_clear(KEY_RFKILL);                      break;
 391                 case 0xb5: asus_map_key_clear(KEY_CALC);                        break;
 392                 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);          break;
 393                 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);                break;
 394
 395                 /* ASUS touchpad toggle */
 396                 case 0x6b: asus_map_key_clear(KEY_F21);                 break;
 397
 398                 /* ROG key */
 399                 case 0x38: asus_map_key_clear(KEY_PROG1);               break;
 400
 401                 /* Fn+C ASUS Splendid */
 402                 case 0xba: asus_map_key_clear(KEY_PROG2);               break;
 403
 404                 /* Fn+Space Power4Gear Hybrid */
 405                 case 0x5c: asus_map_key_clear(KEY_PROG3);               break;
 406
 407                 default:
 408                         /* ASUS lazily declares 256 usages, ignore the rest,
 409                          * as some make the keyboard appear as a pointer device. */
 410                         return -1;
 411                 }
 412
 413                 /*
 414                  * Check and enable backlight only on devices with UsagePage ==
 415                  * 0xff31 to avoid initializing the keyboard firmware multiple
 416                  * times on devices with multiple HID descriptors but same
 417                  * PID/VID.
 418                  */
 419                 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
 420                         drvdata->enable_backlight = true;
 421
 422                 return 1;
 423         }
 424
 425         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
 426                 set_bit(EV_REP, hi->input->evbit);
 427                 switch (usage->hid & HID_USAGE) {
 428                 case 0xff01: asus_map_key_clear(BTN_1); break;
 429                 case 0xff02: asus_map_key_clear(BTN_2); break;
 430                 case 0xff03: asus_map_key_clear(BTN_3); break;
 431                 case 0xff04: asus_map_key_clear(BTN_4); break;
 432                 case 0xff05: asus_map_key_clear(BTN_5); break;
 433                 case 0xff06: asus_map_key_clear(BTN_6); break;
 434                 case 0xff07: asus_map_key_clear(BTN_7); break;
 435                 case 0xff08: asus_map_key_clear(BTN_8); break;
 436                 case 0xff09: asus_map_key_clear(BTN_9); break;
 437                 case 0xff0a: asus_map_key_clear(BTN_A); break;
 438                 case 0xff0b: asus_map_key_clear(BTN_B); break;
 439                 case 0x00f1: asus_map_key_clear(KEY_WLAN);      break;
 440                 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);    break;
 441                 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);      break;
 442                 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);       break;
 443                 case 0x00f7: asus_map_key_clear(KEY_CAMERA);    break;
 444                 case 0x00f8: asus_map_key_clear(KEY_PROG1);     break;
 445                 default:
 446                         return 0;
 447                 }
 448
 449                 return 1;
 450         }
 451
 452         if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
 453                 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
 454                 switch (usage->hid & HID_USAGE) {
 455                 case 0xe2: /* Mute */
 456                 case 0xe9: /* Volume up */
 457                 case 0xea: /* Volume down */
 458                         return 0;
 459                 default:
 460                         /* Ignore dummy Consumer usages which make the
 461                          * keyboard incorrectly appear as a pointer device.
 462                          */
 463                         return -1;
 464                 }
 465         }
 466
 467         return 0;
 468 }
 469
 470 static int asus_start_multitouch(struct hid_device *hdev)
 471 {
 472         int ret;
 473         const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
 474         unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 475
 476         if (!dmabuf) {
 477                 ret = -ENOMEM;
 478                 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 479                 return ret;
 480         }
 481
 482         ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
 483                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
 484
 485         kfree(dmabuf);
 486
 487         if (ret != sizeof(buf)) {
 488                 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
 489                 return ret;
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
 496 {
 497         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 498
 499         if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
 500                 return asus_start_multitouch(hdev);
 501
 502         return 0;
 503 }
 504
 505 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
 506 {
 507         int ret;
 508         struct asus_drvdata *drvdata;
 509
 510         drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
 511         if (drvdata == NULL) {
 512                 hid_err(hdev, "Can't alloc Asus descriptor\n");
 513                 return -ENOMEM;
 514         }
 515
 516         hid_set_drvdata(hdev, drvdata);
 517
 518         drvdata->quirks = id->driver_data;
 519
 520         if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
 521                 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
 522
 523         ret = hid_parse(hdev);
 524         if (ret) {
 525                 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
 526                 return ret;
 527         }
 528
 529         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 530         if (ret) {
 531                 hid_err(hdev, "Asus hw start failed: %d\n", ret);
 532                 return ret;
 533         }
 534
 535         if (!drvdata->input) {
 536                 hid_err(hdev, "Asus input not registered\n");
 537                 ret = -ENOMEM;
 538                 goto err_stop_hw;
 539         }
 540
 541         if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
 542                 drvdata->input->name = "Asus TouchPad";
 543         } else {
 544                 drvdata->input->name = "Asus Keyboard";
 545         }
 546
 547         if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
 548                 ret = asus_start_multitouch(hdev);
 549                 if (ret)
 550                         goto err_stop_hw;
 551         }
 552
 553         return 0;
 554 err_stop_hw:
 555         hid_hw_stop(hdev);
 556         return ret;
 557 }
 558
 559 static void asus_remove(struct hid_device *hdev)
 560 {
 561         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 562
 563         if (drvdata->kbd_backlight) {
 564                 drvdata->kbd_backlight->removed = true;
 565                 cancel_work_sync(&drvdata->kbd_backlight->work);
 566         }
 567
 568         hid_hw_stop(hdev);
 569 }
 570
 571 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 572                 unsigned int *rsize)
 573 {
 574         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 575
 576         if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
 577                         *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
 578                 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
 579                 rdesc[55] = 0xdd;
 580         }
 581         if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
 582                  *rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) {
 583                 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
 584                 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
 585         }
 586
 587         return rdesc;
 588 }
 589
 590 static const struct hid_device_id asus_devices[] = {
 591         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
 592                 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
 593         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
 594                 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
 595         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 596                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
 597         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 598                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
 599         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 600                 USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
 601           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
 602         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
 603         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
 604         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
 605         { }
 606 };
 607 MODULE_DEVICE_TABLE(hid, asus_devices);
 608
 609 static struct hid_driver asus_driver = {
 610         .name                   = "asus",
 611         .id_table               = asus_devices,
 612         .report_fixup           = asus_report_fixup,
 613         .probe                  = asus_probe,
 614         .remove                 = asus_remove,
 615         .input_mapping          = asus_input_mapping,
 616         .input_configured       = asus_input_configured,
 617 #ifdef CONFIG_PM
 618         .reset_resume           = asus_reset_resume,
 619 #endif
 620         .raw_event              = asus_raw_event
 621 };
 622 module_hid_driver(asus_driver);
 623
 624 MODULE_LICENSE("GPL");