drivers/hid/hid-asus.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  HID driver for Asus notebook built-in keyboard.
   4  *  Fixes small logical maximum to match usage maximum.
   5  *
   6  *  Currently supported devices are:
   7  *    EeeBook X205TA
   8  *    VivoBook E200HA
   9  *
  10  *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
  11  *
  12  *  This module based on hid-ortek by
  13  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
  14  *  Copyright (c) 2011 Jiri Kosina
  15  *
  16  *  This module has been updated to add support for Asus i2c touchpad.
  17  *
  18  *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
  19  *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
  20  *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
  21  */
  22
  23 /*
  24  */
  25
  26 #include <linux/dmi.h>
  27 #include <linux/hid.h>
  28 #include <linux/module.h>
  29 #include <linux/platform_data/x86/asus-wmi.h>
  30 #include <linux/input/mt.h>
  31 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
  32 #include <linux/power_supply.h>
  33
  34 #include "hid-ids.h"
  35
  36 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
  37 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
  38 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
  39 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
  40 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
  41
  42 #define T100_TPAD_INTF 2
  43 #define MEDION_E1239T_TPAD_INTF 1
  44
  45 #define E1239T_TP_TOGGLE_REPORT_ID 0x05
  46 #define T100CHI_MOUSE_REPORT_ID 0x06
  47 #define FEATURE_REPORT_ID 0x0d
  48 #define INPUT_REPORT_ID 0x5d
  49 #define FEATURE_KBD_REPORT_ID 0x5a
  50 #define FEATURE_KBD_REPORT_SIZE 16
  51 #define FEATURE_KBD_LED_REPORT_ID1 0x5d
  52 #define FEATURE_KBD_LED_REPORT_ID2 0x5e
  53
  54 #define SUPPORT_KBD_BACKLIGHT BIT(0)
  55
  56 #define MAX_TOUCH_MAJOR 8
  57 #define MAX_PRESSURE 128
  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 BATTERY_REPORT_ID       (0x03)
  67 #define BATTERY_REPORT_SIZE     (1 + 8)
  68 #define BATTERY_LEVEL_MAX       ((u8)255)
  69 #define BATTERY_STAT_DISCONNECT (0)
  70 #define BATTERY_STAT_CHARGING   (1)
  71 #define BATTERY_STAT_FULL       (2)
  72
  73 #define QUIRK_FIX_NOTEBOOK_REPORT       BIT(0)
  74 #define QUIRK_NO_INIT_REPORTS           BIT(1)
  75 #define QUIRK_SKIP_INPUT_MAPPING        BIT(2)
  76 #define QUIRK_IS_MULTITOUCH             BIT(3)
  77 #define QUIRK_NO_CONSUMER_USAGES        BIT(4)
  78 #define QUIRK_USE_KBD_BACKLIGHT         BIT(5)
  79 #define QUIRK_T100_KEYBOARD             BIT(6)
  80 #define QUIRK_T100CHI                   BIT(7)
  81 #define QUIRK_G752_KEYBOARD             BIT(8)
  82 #define QUIRK_T90CHI                    BIT(9)
  83 #define QUIRK_MEDION_E1239T             BIT(10)
  84 #define QUIRK_ROG_NKEY_KEYBOARD         BIT(11)
  85 #define QUIRK_ROG_CLAYMORE_II_KEYBOARD BIT(12)
  86
  87 #define I2C_KEYBOARD_QUIRKS                     (QUIRK_FIX_NOTEBOOK_REPORT | \
  88                                                  QUIRK_NO_INIT_REPORTS | \
  89                                                  QUIRK_NO_CONSUMER_USAGES)
  90 #define I2C_TOUCHPAD_QUIRKS                     (QUIRK_NO_INIT_REPORTS | \
  91                                                  QUIRK_SKIP_INPUT_MAPPING | \
  92                                                  QUIRK_IS_MULTITOUCH)
  93
  94 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
  95
  96 struct asus_kbd_leds {
  97         struct led_classdev cdev;
  98         struct hid_device *hdev;
  99         struct work_struct work;
 100         unsigned int brightness;
 101         spinlock_t lock;
 102         bool removed;
 103 };
 104
 105 struct asus_touchpad_info {
 106         int max_x;
 107         int max_y;
 108         int res_x;
 109         int res_y;
 110         int contact_size;
 111         int max_contacts;
 112         int report_size;
 113 };
 114
 115 struct asus_drvdata {
 116         unsigned long quirks;
 117         struct hid_device *hdev;
 118         struct input_dev *input;
 119         struct input_dev *tp_kbd_input;
 120         struct asus_kbd_leds *kbd_backlight;
 121         const struct asus_touchpad_info *tp;
 122         bool enable_backlight;
 123         struct power_supply *battery;
 124         struct power_supply_desc battery_desc;
 125         int battery_capacity;
 126         int battery_stat;
 127         bool battery_in_query;
 128         unsigned long battery_next_query;
 129 };
 130
 131 static int asus_report_battery(struct asus_drvdata *, u8 *, int);
 132
 133 static const struct asus_touchpad_info asus_i2c_tp = {
 134         .max_x = 2794,
 135         .max_y = 1758,
 136         .contact_size = 5,
 137         .max_contacts = 5,
 138         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 139 };
 140
 141 static const struct asus_touchpad_info asus_t100ta_tp = {
 142         .max_x = 2240,
 143         .max_y = 1120,
 144         .res_x = 30, /* units/mm */
 145         .res_y = 27, /* units/mm */
 146         .contact_size = 5,
 147         .max_contacts = 5,
 148         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 149 };
 150
 151 static const struct asus_touchpad_info asus_t100ha_tp = {
 152         .max_x = 2640,
 153         .max_y = 1320,
 154         .res_x = 30, /* units/mm */
 155         .res_y = 29, /* units/mm */
 156         .contact_size = 5,
 157         .max_contacts = 5,
 158         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 159 };
 160
 161 static const struct asus_touchpad_info asus_t200ta_tp = {
 162         .max_x = 3120,
 163         .max_y = 1716,
 164         .res_x = 30, /* units/mm */
 165         .res_y = 28, /* units/mm */
 166         .contact_size = 5,
 167         .max_contacts = 5,
 168         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 169 };
 170
 171 static const struct asus_touchpad_info asus_t100chi_tp = {
 172         .max_x = 2640,
 173         .max_y = 1320,
 174         .res_x = 31, /* units/mm */
 175         .res_y = 29, /* units/mm */
 176         .contact_size = 3,
 177         .max_contacts = 4,
 178         .report_size = 15 /* 2 byte header + 3 * 4 + 1 byte footer */,
 179 };
 180
 181 static const struct asus_touchpad_info medion_e1239t_tp = {
 182         .max_x = 2640,
 183         .max_y = 1380,
 184         .res_x = 29, /* units/mm */
 185         .res_y = 28, /* units/mm */
 186         .contact_size = 5,
 187         .max_contacts = 5,
 188         .report_size = 32 /* 2 byte header + 5 * 5 + 5 byte footer */,
 189 };
 190
 191 static void asus_report_contact_down(struct asus_drvdata *drvdat,
 192                 int toolType, u8 *data)
 193 {
 194         struct input_dev *input = drvdat->input;
 195         int touch_major, pressure, x, y;
 196
 197         x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 198         y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
 199
 200         input_report_abs(input, ABS_MT_POSITION_X, x);
 201         input_report_abs(input, ABS_MT_POSITION_Y, y);
 202
 203         if (drvdat->tp->contact_size < 5)
 204                 return;
 205
 206         if (toolType == MT_TOOL_PALM) {
 207                 touch_major = MAX_TOUCH_MAJOR;
 208                 pressure = MAX_PRESSURE;
 209         } else {
 210                 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 211                 pressure = data[4] & CONTACT_PRESSURE_MASK;
 212         }
 213
 214         input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 215         input_report_abs(input, ABS_MT_PRESSURE, pressure);
 216 }
 217
 218 /* Required for Synaptics Palm Detection */
 219 static void asus_report_tool_width(struct asus_drvdata *drvdat)
 220 {
 221         struct input_mt *mt = drvdat->input->mt;
 222         struct input_mt_slot *oldest;
 223         int oldid, i;
 224
 225         if (drvdat->tp->contact_size < 5)
 226                 return;
 227
 228         oldest = NULL;
 229         oldid = mt->trkid;
 230
 231         for (i = 0; i < mt->num_slots; ++i) {
 232                 struct input_mt_slot *ps = &mt->slots[i];
 233                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
 234
 235                 if (id < 0)
 236                         continue;
 237                 if ((id - oldid) & TRKID_SGN) {
 238                         oldest = ps;
 239                         oldid = id;
 240                 }
 241         }
 242
 243         if (oldest) {
 244                 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
 245                         input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 246         }
 247 }
 248
 249 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
 250 {
 251         int i, toolType = MT_TOOL_FINGER;
 252         u8 *contactData = data + 2;
 253
 254         if (size != drvdat->tp->report_size)
 255                 return 0;
 256
 257         for (i = 0; i < drvdat->tp->max_contacts; i++) {
 258                 bool down = !!(data[1] & BIT(i+3));
 259
 260                 if (drvdat->tp->contact_size >= 5)
 261                         toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 262                                                 MT_TOOL_PALM : MT_TOOL_FINGER;
 263
 264                 input_mt_slot(drvdat->input, i);
 265                 input_mt_report_slot_state(drvdat->input, toolType, down);
 266
 267                 if (down) {
 268                         asus_report_contact_down(drvdat, toolType, contactData);
 269                         contactData += drvdat->tp->contact_size;
 270                 }
 271         }
 272
 273         input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 274         asus_report_tool_width(drvdat);
 275
 276         input_mt_sync_frame(drvdat->input);
 277         input_sync(drvdat->input);
 278
 279         return 1;
 280 }
 281
 282 static int asus_e1239t_event(struct asus_drvdata *drvdat, u8 *data, int size)
 283 {
 284         if (size != 3)
 285                 return 0;
 286
 287         /* Handle broken mute key which only sends press events */
 288         if (!drvdat->tp &&
 289             data[0] == 0x02 && data[1] == 0xe2 && data[2] == 0x00) {
 290                 input_report_key(drvdat->input, KEY_MUTE, 1);
 291                 input_sync(drvdat->input);
 292                 input_report_key(drvdat->input, KEY_MUTE, 0);
 293                 input_sync(drvdat->input);
 294                 return 1;
 295         }
 296
 297         /* Handle custom touchpad toggle key which only sends press events */
 298         if (drvdat->tp_kbd_input &&
 299             data[0] == 0x05 && data[1] == 0x02 && data[2] == 0x28) {
 300                 input_report_key(drvdat->tp_kbd_input, KEY_F21, 1);
 301                 input_sync(drvdat->tp_kbd_input);
 302                 input_report_key(drvdat->tp_kbd_input, KEY_F21, 0);
 303                 input_sync(drvdat->tp_kbd_input);
 304                 return 1;
 305         }
 306
 307         return 0;
 308 }
 309
 310 static int asus_event(struct hid_device *hdev, struct hid_field *field,
 311                       struct hid_usage *usage, __s32 value)
 312 {
 313         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
 314             (usage->hid & HID_USAGE) != 0x00 &&
 315             (usage->hid & HID_USAGE) != 0xff && !usage->type) {
 316                 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
 317                          usage->hid & HID_USAGE);
 318         }
 319
 320         return 0;
 321 }
 322
 323 static int asus_raw_event(struct hid_device *hdev,
 324                 struct hid_report *report, u8 *data, int size)
 325 {
 326         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 327
 328         if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
 329                 return asus_report_battery(drvdata, data, size);
 330
 331         if (drvdata->tp && data[0] == INPUT_REPORT_ID)
 332                 return asus_report_input(drvdata, data, size);
 333
 334         if (drvdata->quirks & QUIRK_MEDION_E1239T)
 335                 return asus_e1239t_event(drvdata, data, size);
 336
 337         if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) {
 338                 /*
 339                  * Skip these report ID, the device emits a continuous stream associated
 340                  * with the AURA mode it is in which looks like an 'echo'.
 341                 */
 342                 if (report->id == FEATURE_KBD_LED_REPORT_ID1 ||
 343                                 report->id == FEATURE_KBD_LED_REPORT_ID2) {
 344                         return -1;
 345                 /* Additional report filtering */
 346                 } else if (report->id == FEATURE_KBD_REPORT_ID) {
 347                         /*
 348                          * G14 and G15 send these codes on some keypresses with no
 349                          * discernable reason for doing so. We'll filter them out to avoid
 350                          * unmapped warning messages later.
 351                         */
 352                         if (data[1] == 0xea || data[1] == 0xec || data[1] == 0x02 ||
 353                                         data[1] == 0x8a || data[1] == 0x9e) {
 354                                 return -1;
 355                         }
 356                 }
 357                 if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 358                         /*
 359                          * G713 and G733 send these codes on some keypresses, depending on
 360                          * the key pressed it can trigger a shutdown event if not caught.
 361                         */
 362                         if(data[0] == 0x02 && data[1] == 0x30) {
 363                                 return -1;
 364                         }
 365                 }
 366
 367         }
 368
 369         if (drvdata->quirks & QUIRK_ROG_CLAYMORE_II_KEYBOARD) {
 370                 /*
 371                  * CLAYMORE II keyboard sends this packet when it goes to sleep
 372                  * this causes the whole system to go into suspend.
 373                 */
 374
 375                 if(size == 2 && data[0] == 0x02 && data[1] == 0x00) {
 376                         return -1;
 377                 }
 378         }
 379
 380         return 0;
 381 }
 382
 383 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
 384 {
 385         unsigned char *dmabuf;
 386         int ret;
 387
 388         dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
 389         if (!dmabuf)
 390                 return -ENOMEM;
 391
 392         /*
 393          * The report ID should be set from the incoming buffer due to LED and key
 394          * interfaces having different pages
 395         */
 396         ret = hid_hw_raw_request(hdev, buf[0], dmabuf,
 397                                  buf_size, HID_FEATURE_REPORT,
 398                                  HID_REQ_SET_REPORT);
 399         kfree(dmabuf);
 400
 401         return ret;
 402 }
 403
 404 static int asus_kbd_init(struct hid_device *hdev)
 405 {
 406         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
 407                      0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 408         int ret;
 409
 410         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 411         if (ret < 0)
 412                 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
 413
 414         return ret;
 415 }
 416
 417 static int asus_kbd_get_functions(struct hid_device *hdev,
 418                                   unsigned char *kbd_func)
 419 {
 420         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
 421         u8 *readbuf;
 422         int ret;
 423
 424         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 425         if (ret < 0) {
 426                 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
 427                 return ret;
 428         }
 429
 430         readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
 431         if (!readbuf)
 432                 return -ENOMEM;
 433
 434         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
 435                                  FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
 436                                  HID_REQ_GET_REPORT);
 437         if (ret < 0) {
 438                 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
 439                 kfree(readbuf);
 440                 return ret;
 441         }
 442
 443         *kbd_func = readbuf[6];
 444
 445         kfree(readbuf);
 446         return ret;
 447 }
 448
 449 static int rog_nkey_led_init(struct hid_device *hdev)
 450 {
 451         u8 buf_init_start[] = { FEATURE_KBD_LED_REPORT_ID1, 0xB9 };
 452         u8 buf_init2[] = { FEATURE_KBD_LED_REPORT_ID1, 0x41, 0x53, 0x55, 0x53, 0x20,
 453                                 0x54, 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 454         u8 buf_init3[] = { FEATURE_KBD_LED_REPORT_ID1,
 455                                                 0x05, 0x20, 0x31, 0x00, 0x08 };
 456         int ret;
 457
 458         hid_info(hdev, "Asus initialise N-KEY Device");
 459         /* The first message is an init start */
 460         ret = asus_kbd_set_report(hdev, buf_init_start, sizeof(buf_init_start));
 461         if (ret < 0) {
 462                 hid_warn(hdev, "Asus failed to send init start command: %d\n", ret);
 463                 return ret;
 464         }
 465         /* Followed by a string */
 466         ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 467         if (ret < 0) {
 468                 hid_warn(hdev, "Asus failed to send init command 1.0: %d\n", ret);
 469                 return ret;
 470         }
 471         /* Followed by a string */
 472         ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 473         if (ret < 0) {
 474                 hid_warn(hdev, "Asus failed to send init command 1.1: %d\n", ret);
 475                 return ret;
 476         }
 477
 478         /* begin second report ID with same data */
 479         buf_init2[0] = FEATURE_KBD_LED_REPORT_ID2;
 480         buf_init3[0] = FEATURE_KBD_LED_REPORT_ID2;
 481
 482         ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 483         if (ret < 0) {
 484                 hid_warn(hdev, "Asus failed to send init command 2.0: %d\n", ret);
 485                 return ret;
 486         }
 487         ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 488         if (ret < 0)
 489                 hid_warn(hdev, "Asus failed to send init command 2.1: %d\n", ret);
 490
 491         return ret;
 492 }
 493
 494 static void asus_schedule_work(struct asus_kbd_leds *led)
 495 {
 496         unsigned long flags;
 497
 498         spin_lock_irqsave(&led->lock, flags);
 499         if (!led->removed)
 500                 schedule_work(&led->work);
 501         spin_unlock_irqrestore(&led->lock, flags);
 502 }
 503
 504 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
 505                                    enum led_brightness brightness)
 506 {
 507         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 508                                                  cdev);
 509         unsigned long flags;
 510
 511         spin_lock_irqsave(&led->lock, flags);
 512         led->brightness = brightness;
 513         spin_unlock_irqrestore(&led->lock, flags);
 514
 515         asus_schedule_work(led);
 516 }
 517
 518 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
 519 {
 520         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 521                                                  cdev);
 522         enum led_brightness brightness;
 523         unsigned long flags;
 524
 525         spin_lock_irqsave(&led->lock, flags);
 526         brightness = led->brightness;
 527         spin_unlock_irqrestore(&led->lock, flags);
 528
 529         return brightness;
 530 }
 531
 532 static void asus_kbd_backlight_work(struct work_struct *work)
 533 {
 534         struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
 535         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
 536         int ret;
 537         unsigned long flags;
 538
 539         spin_lock_irqsave(&led->lock, flags);
 540         buf[4] = led->brightness;
 541         spin_unlock_irqrestore(&led->lock, flags);
 542
 543         ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
 544         if (ret < 0)
 545                 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
 546 }
 547
 548 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
 549  * precedence. We only activate HID-based backlight control when the
 550  * WMI control is not available.
 551  */
 552 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
 553 {
 554         u32 value;
 555         int ret;
 556
 557         if (!IS_ENABLED(CONFIG_ASUS_WMI))
 558                 return false;
 559
 560         ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS,
 561                                        ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value);
 562         hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
 563         if (ret)
 564                 return false;
 565
 566         return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
 567 }
 568
 569 static int asus_kbd_register_leds(struct hid_device *hdev)
 570 {
 571         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 572         unsigned char kbd_func;
 573         int ret;
 574
 575         if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 576                 ret = rog_nkey_led_init(hdev);
 577                 if (ret < 0)
 578                         return ret;
 579         } else {
 580                 /* Initialize keyboard */
 581                 ret = asus_kbd_init(hdev);
 582                 if (ret < 0)
 583                         return ret;
 584
 585                 /* Get keyboard functions */
 586                 ret = asus_kbd_get_functions(hdev, &kbd_func);
 587                 if (ret < 0)
 588                         return ret;
 589
 590                 /* Check for backlight support */
 591                 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
 592                         return -ENODEV;
 593         }
 594
 595         drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
 596                                               sizeof(struct asus_kbd_leds),
 597                                               GFP_KERNEL);
 598         if (!drvdata->kbd_backlight)
 599                 return -ENOMEM;
 600
 601         drvdata->kbd_backlight->removed = false;
 602         drvdata->kbd_backlight->brightness = 0;
 603         drvdata->kbd_backlight->hdev = hdev;
 604         drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
 605         drvdata->kbd_backlight->cdev.max_brightness = 3;
 606         drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
 607         drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
 608         INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
 609         spin_lock_init(&drvdata->kbd_backlight->lock);
 610
 611         ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
 612         if (ret < 0) {
 613                 /* No need to have this still around */
 614                 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
 615         }
 616
 617         return ret;
 618 }
 619
 620 /*
 621  * [0]       REPORT_ID (same value defined in report descriptor)
 622  * [1]       rest battery level. range [0..255]
 623  * [2]..[7]  Bluetooth hardware address (MAC address)
 624  * [8]       charging status
 625  *            = 0 : AC offline / discharging
 626  *            = 1 : AC online  / charging
 627  *            = 2 : AC online  / fully charged
 628  */
 629 static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 630 {
 631         u8 sts;
 632         u8 lvl;
 633         int val;
 634
 635         lvl = data[1];
 636         sts = data[8];
 637
 638         drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
 639
 640         switch (sts) {
 641         case BATTERY_STAT_CHARGING:
 642                 val = POWER_SUPPLY_STATUS_CHARGING;
 643                 break;
 644         case BATTERY_STAT_FULL:
 645                 val = POWER_SUPPLY_STATUS_FULL;
 646                 break;
 647         case BATTERY_STAT_DISCONNECT:
 648         default:
 649                 val = POWER_SUPPLY_STATUS_DISCHARGING;
 650                 break;
 651         }
 652         drvdata->battery_stat = val;
 653
 654         return 0;
 655 }
 656
 657 static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 658 {
 659         /* notify only the autonomous event by device */
 660         if ((drvdata->battery_in_query == false) &&
 661                          (size == BATTERY_REPORT_SIZE))
 662                 power_supply_changed(drvdata->battery);
 663
 664         return 0;
 665 }
 666
 667 static int asus_battery_query(struct asus_drvdata *drvdata)
 668 {
 669         u8 *buf;
 670         int ret = 0;
 671
 672         buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
 673         if (!buf)
 674                 return -ENOMEM;
 675
 676         drvdata->battery_in_query = true;
 677         ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
 678                                 buf, BATTERY_REPORT_SIZE,
 679                                 HID_INPUT_REPORT, HID_REQ_GET_REPORT);
 680         drvdata->battery_in_query = false;
 681         if (ret == BATTERY_REPORT_SIZE)
 682                 ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
 683         else
 684                 ret = -ENODATA;
 685
 686         kfree(buf);
 687
 688         return ret;
 689 }
 690
 691 static enum power_supply_property asus_battery_props[] = {
 692         POWER_SUPPLY_PROP_STATUS,
 693         POWER_SUPPLY_PROP_PRESENT,
 694         POWER_SUPPLY_PROP_CAPACITY,
 695         POWER_SUPPLY_PROP_SCOPE,
 696         POWER_SUPPLY_PROP_MODEL_NAME,
 697 };
 698
 699 #define QUERY_MIN_INTERVAL      (60 * HZ)       /* 60[sec] */
 700
 701 static int asus_battery_get_property(struct power_supply *psy,
 702                                 enum power_supply_property psp,
 703                                 union power_supply_propval *val)
 704 {
 705         struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
 706         int ret = 0;
 707
 708         switch (psp) {
 709         case POWER_SUPPLY_PROP_STATUS:
 710         case POWER_SUPPLY_PROP_CAPACITY:
 711                 if (time_before(drvdata->battery_next_query, jiffies)) {
 712                         drvdata->battery_next_query =
 713                                          jiffies + QUERY_MIN_INTERVAL;
 714                         ret = asus_battery_query(drvdata);
 715                         if (ret)
 716                                 return ret;
 717                 }
 718                 if (psp == POWER_SUPPLY_PROP_STATUS)
 719                         val->intval = drvdata->battery_stat;
 720                 else
 721                         val->intval = drvdata->battery_capacity;
 722                 break;
 723         case POWER_SUPPLY_PROP_PRESENT:
 724                 val->intval = 1;
 725                 break;
 726         case POWER_SUPPLY_PROP_SCOPE:
 727                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 728                 break;
 729         case POWER_SUPPLY_PROP_MODEL_NAME:
 730                 val->strval = drvdata->hdev->name;
 731                 break;
 732         default:
 733                 ret = -EINVAL;
 734                 break;
 735         }
 736
 737         return ret;
 738 }
 739
 740 static int asus_battery_probe(struct hid_device *hdev)
 741 {
 742         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 743         struct power_supply_config pscfg = { .drv_data = drvdata };
 744         int ret = 0;
 745
 746         drvdata->battery_capacity = 0;
 747         drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
 748         drvdata->battery_in_query = false;
 749
 750         drvdata->battery_desc.properties = asus_battery_props;
 751         drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
 752         drvdata->battery_desc.get_property = asus_battery_get_property;
 753         drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 754         drvdata->battery_desc.use_for_apm = 0;
 755         drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 756                                         "asus-keyboard-%s-battery",
 757                                         strlen(hdev->uniq) ?
 758                                         hdev->uniq : dev_name(&hdev->dev));
 759         if (!drvdata->battery_desc.name)
 760                 return -ENOMEM;
 761
 762         drvdata->battery_next_query = jiffies;
 763
 764         drvdata->battery = devm_power_supply_register(&hdev->dev,
 765                                 &(drvdata->battery_desc), &pscfg);
 766         if (IS_ERR(drvdata->battery)) {
 767                 ret = PTR_ERR(drvdata->battery);
 768                 drvdata->battery = NULL;
 769                 hid_err(hdev, "Unable to register battery device\n");
 770                 return ret;
 771         }
 772
 773         power_supply_powers(drvdata->battery, &hdev->dev);
 774
 775         return ret;
 776 }
 777
 778 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 779 {
 780         struct input_dev *input = hi->input;
 781         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 782
 783         /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
 784         if (drvdata->quirks & QUIRK_T100CHI &&
 785             hi->report->id != T100CHI_MOUSE_REPORT_ID)
 786                 return 0;
 787
 788         /* Handle MULTI_INPUT on E1239T mouse/touchpad USB interface */
 789         if (drvdata->tp && (drvdata->quirks & QUIRK_MEDION_E1239T)) {
 790                 switch (hi->report->id) {
 791                 case E1239T_TP_TOGGLE_REPORT_ID:
 792                         input_set_capability(input, EV_KEY, KEY_F21);
 793                         input->name = "Asus Touchpad Keys";
 794                         drvdata->tp_kbd_input = input;
 795                         return 0;
 796                 case INPUT_REPORT_ID:
 797                         break; /* Touchpad report, handled below */
 798                 default:
 799                         return 0; /* Ignore other reports */
 800                 }
 801         }
 802
 803         if (drvdata->tp) {
 804                 int ret;
 805
 806                 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
 807                                      drvdata->tp->max_x, 0, 0);
 808                 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
 809                                      drvdata->tp->max_y, 0, 0);
 810                 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
 811                 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
 812
 813                 if (drvdata->tp->contact_size >= 5) {
 814                         input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
 815                                              MAX_TOUCH_MAJOR, 0, 0);
 816                         input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
 817                                              MAX_TOUCH_MAJOR, 0, 0);
 818                         input_set_abs_params(input, ABS_MT_PRESSURE, 0,
 819                                               MAX_PRESSURE, 0, 0);
 820                 }
 821
 822                 __set_bit(BTN_LEFT, input->keybit);
 823                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 824
 825                 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
 826                                           INPUT_MT_POINTER);
 827
 828                 if (ret) {
 829                         hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 830                         return ret;
 831                 }
 832         }
 833
 834         drvdata->input = input;
 835
 836         if (drvdata->enable_backlight &&
 837             !asus_kbd_wmi_led_control_present(hdev) &&
 838             asus_kbd_register_leds(hdev))
 839                 hid_warn(hdev, "Failed to initialize backlight.\n");
 840
 841         return 0;
 842 }
 843
 844 #define asus_map_key_clear(c)   hid_map_usage_clear(hi, usage, bit, \
 845                                                     max, EV_KEY, (c))
 846 static int asus_input_mapping(struct hid_device *hdev,
 847                 struct hid_input *hi, struct hid_field *field,
 848                 struct hid_usage *usage, unsigned long **bit,
 849                 int *max)
 850 {
 851         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 852
 853         if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 854                 /* Don't map anything from the HID report.
 855                  * We do it all manually in asus_input_configured
 856                  */
 857                 return -1;
 858         }
 859
 860         /*
 861          * Ignore a bunch of bogus collections in the T100CHI descriptor.
 862          * This avoids a bunch of non-functional hid_input devices getting
 863          * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
 864          */
 865         if ((drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) &&
 866             (field->application == (HID_UP_GENDESK | 0x0080) ||
 867              field->application == HID_GD_MOUSE ||
 868              usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
 869              usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
 870              usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)))
 871                 return -1;
 872
 873         /* ASUS-specific keyboard hotkeys and led backlight */
 874         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_ASUSVENDOR) {
 875                 switch (usage->hid & HID_USAGE) {
 876                 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
 877                 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);                break;
 878                 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);         break;
 879                 case 0x6c: asus_map_key_clear(KEY_SLEEP);               break;
 880                 case 0x7c: asus_map_key_clear(KEY_MICMUTE);             break;
 881                 case 0x82: asus_map_key_clear(KEY_CAMERA);              break;
 882                 case 0x88: asus_map_key_clear(KEY_RFKILL);                      break;
 883                 case 0xb5: asus_map_key_clear(KEY_CALC);                        break;
 884                 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);          break;
 885                 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);                break;
 886
 887                 /* ASUS touchpad toggle */
 888                 case 0x6b: asus_map_key_clear(KEY_F21);                 break;
 889
 890                 /* ROG key */
 891                 case 0x38: asus_map_key_clear(KEY_PROG1);               break;
 892
 893                 /* Fn+C ASUS Splendid */
 894                 case 0xba: asus_map_key_clear(KEY_PROG2);               break;
 895
 896                 /* Fn+Space Power4Gear Hybrid */
 897                 case 0x5c: asus_map_key_clear(KEY_PROG3);               break;
 898
 899                 /* Fn+F5 "fan" symbol on FX503VD */
 900                 case 0x99: asus_map_key_clear(KEY_PROG4);               break;
 901
 902                 /* Fn+F5 "fan" symbol on N-Key keyboard */
 903                 case 0xae: asus_map_key_clear(KEY_PROG4);               break;
 904
 905                 /* Fn+Ret "Calc" symbol on N-Key keyboard */
 906                 case 0x92: asus_map_key_clear(KEY_CALC);                break;
 907
 908                 /* Fn+Left Aura mode previous on N-Key keyboard */
 909                 case 0xb2: asus_map_key_clear(KEY_PROG2);               break;
 910
 911                 /* Fn+Right Aura mode next on N-Key keyboard */
 912                 case 0xb3: asus_map_key_clear(KEY_PROG3);               break;
 913
 914                 default:
 915                         /* ASUS lazily declares 256 usages, ignore the rest,
 916                          * as some make the keyboard appear as a pointer device. */
 917                         return -1;
 918                 }
 919
 920                 /*
 921                  * Check and enable backlight only on devices with UsagePage ==
 922                  * 0xff31 to avoid initializing the keyboard firmware multiple
 923                  * times on devices with multiple HID descriptors but same
 924                  * PID/VID.
 925                  */
 926                 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
 927                         drvdata->enable_backlight = true;
 928
 929                 set_bit(EV_REP, hi->input->evbit);
 930                 return 1;
 931         }
 932
 933         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
 934                 switch (usage->hid & HID_USAGE) {
 935                 case 0xff01: asus_map_key_clear(BTN_1); break;
 936                 case 0xff02: asus_map_key_clear(BTN_2); break;
 937                 case 0xff03: asus_map_key_clear(BTN_3); break;
 938                 case 0xff04: asus_map_key_clear(BTN_4); break;
 939                 case 0xff05: asus_map_key_clear(BTN_5); break;
 940                 case 0xff06: asus_map_key_clear(BTN_6); break;
 941                 case 0xff07: asus_map_key_clear(BTN_7); break;
 942                 case 0xff08: asus_map_key_clear(BTN_8); break;
 943                 case 0xff09: asus_map_key_clear(BTN_9); break;
 944                 case 0xff0a: asus_map_key_clear(BTN_A); break;
 945                 case 0xff0b: asus_map_key_clear(BTN_B); break;
 946                 case 0x00f1: asus_map_key_clear(KEY_WLAN);      break;
 947                 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);    break;
 948                 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);      break;
 949                 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);       break;
 950                 case 0x00f7: asus_map_key_clear(KEY_CAMERA);    break;
 951                 case 0x00f8: asus_map_key_clear(KEY_PROG1);     break;
 952                 default:
 953                         return 0;
 954                 }
 955
 956                 set_bit(EV_REP, hi->input->evbit);
 957                 return 1;
 958         }
 959
 960         if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
 961                 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
 962                 switch (usage->hid & HID_USAGE) {
 963                 case 0xe2: /* Mute */
 964                 case 0xe9: /* Volume up */
 965                 case 0xea: /* Volume down */
 966                         return 0;
 967                 default:
 968                         /* Ignore dummy Consumer usages which make the
 969                          * keyboard incorrectly appear as a pointer device.
 970                          */
 971                         return -1;
 972                 }
 973         }
 974
 975         /*
 976          * The mute button is broken and only sends press events, we
 977          * deal with this in our raw_event handler, so do not map it.
 978          */
 979         if ((drvdata->quirks & QUIRK_MEDION_E1239T) &&
 980             usage->hid == (HID_UP_CONSUMER | 0xe2)) {
 981                 input_set_capability(hi->input, EV_KEY, KEY_MUTE);
 982                 return -1;
 983         }
 984
 985         return 0;
 986 }
 987
 988 static int asus_start_multitouch(struct hid_device *hdev)
 989 {
 990         int ret;
 991         static const unsigned char buf[] = {
 992                 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
 993         };
 994         unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 995
 996         if (!dmabuf) {
 997                 ret = -ENOMEM;
 998                 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 999                 return ret;
1000         }
1001
1002         ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
1003                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
1004
1005         kfree(dmabuf);
1006
1007         if (ret != sizeof(buf)) {
1008                 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
1009                 return ret;
1010         }
1011
1012         return 0;
1013 }
1014
1015 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
1016 {
1017         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1018
1019         if (drvdata->tp)
1020                 return asus_start_multitouch(hdev);
1021
1022         return 0;
1023 }
1024
1025 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
1026 {
1027         int ret;
1028         struct asus_drvdata *drvdata;
1029
1030         drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
1031         if (drvdata == NULL) {
1032                 hid_err(hdev, "Can't alloc Asus descriptor\n");
1033                 return -ENOMEM;
1034         }
1035
1036         hid_set_drvdata(hdev, drvdata);
1037
1038         drvdata->quirks = id->driver_data;
1039
1040         /*
1041          * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
1042          * Thus, identify T90CHI dock with product name string.
1043          */
1044         if (strstr(hdev->name, "T90CHI")) {
1045                 drvdata->quirks &= ~QUIRK_T100CHI;
1046                 drvdata->quirks |= QUIRK_T90CHI;
1047         }
1048
1049         if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
1050                 drvdata->tp = &asus_i2c_tp;
1051
1052         if ((drvdata->quirks & QUIRK_T100_KEYBOARD) && hid_is_usb(hdev)) {
1053                 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1054
1055                 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
1056                         drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
1057                         /*
1058                          * The T100HA uses the same USB-ids as the T100TAF and
1059                          * the T200TA uses the same USB-ids as the T100TA, while
1060                          * both have different max x/y values as the T100TA[F].
1061                          */
1062                         if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
1063                                 drvdata->tp = &asus_t100ha_tp;
1064                         else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
1065                                 drvdata->tp = &asus_t200ta_tp;
1066                         else
1067                                 drvdata->tp = &asus_t100ta_tp;
1068                 }
1069         }
1070
1071         if (drvdata->quirks & QUIRK_T100CHI) {
1072                 /*
1073                  * All functionality is on a single HID interface and for
1074                  * userspace the touchpad must be a separate input_dev.
1075                  */
1076                 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1077                 drvdata->tp = &asus_t100chi_tp;
1078         }
1079
1080         if ((drvdata->quirks & QUIRK_MEDION_E1239T) && hid_is_usb(hdev)) {
1081                 struct usb_host_interface *alt =
1082                         to_usb_interface(hdev->dev.parent)->altsetting;
1083
1084                 if (alt->desc.bInterfaceNumber == MEDION_E1239T_TPAD_INTF) {
1085                         /* For separate input-devs for tp and tp toggle key */
1086                         hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1087                         drvdata->quirks |= QUIRK_SKIP_INPUT_MAPPING;
1088                         drvdata->tp = &medion_e1239t_tp;
1089                 }
1090         }
1091
1092         if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
1093                 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1094
1095         drvdata->hdev = hdev;
1096
1097         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1098                 ret = asus_battery_probe(hdev);
1099                 if (ret) {
1100                         hid_err(hdev,
1101                             "Asus hid battery_probe failed: %d\n", ret);
1102                         return ret;
1103                 }
1104         }
1105
1106         ret = hid_parse(hdev);
1107         if (ret) {
1108                 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
1109                 return ret;
1110         }
1111
1112         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1113         if (ret) {
1114                 hid_err(hdev, "Asus hw start failed: %d\n", ret);
1115                 return ret;
1116         }
1117
1118         if (!drvdata->input) {
1119                 hid_err(hdev, "Asus input not registered\n");
1120                 ret = -ENOMEM;
1121                 goto err_stop_hw;
1122         }
1123
1124         if (drvdata->tp) {
1125                 drvdata->input->name = "Asus TouchPad";
1126         } else {
1127                 drvdata->input->name = "Asus Keyboard";
1128         }
1129
1130         if (drvdata->tp) {
1131                 ret = asus_start_multitouch(hdev);
1132                 if (ret)
1133                         goto err_stop_hw;
1134         }
1135
1136         return 0;
1137 err_stop_hw:
1138         hid_hw_stop(hdev);
1139         return ret;
1140 }
1141
1142 static void asus_remove(struct hid_device *hdev)
1143 {
1144         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1145         unsigned long flags;
1146
1147         if (drvdata->kbd_backlight) {
1148                 spin_lock_irqsave(&drvdata->kbd_backlight->lock, flags);
1149                 drvdata->kbd_backlight->removed = true;
1150                 spin_unlock_irqrestore(&drvdata->kbd_backlight->lock, flags);
1151
1152                 cancel_work_sync(&drvdata->kbd_backlight->work);
1153         }
1154
1155         hid_hw_stop(hdev);
1156 }
1157
1158 static const __u8 asus_g752_fixed_rdesc[] = {
1159         0x19, 0x00,                     /*   Usage Minimum (0x00)       */
1160         0x2A, 0xFF, 0x00,               /*   Usage Maximum (0xFF)       */
1161 };
1162
1163 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1164                 unsigned int *rsize)
1165 {
1166         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1167
1168         if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
1169                         *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
1170                 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
1171                 rdesc[55] = 0xdd;
1172         }
1173         /* For the T100TA/T200TA keyboard dock */
1174         if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
1175                  (*rsize == 76 || *rsize == 101) &&
1176                  rdesc[73] == 0x81 && rdesc[74] == 0x01) {
1177                 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
1178                 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
1179         }
1180         /* For the T100CHI/T90CHI keyboard dock */
1181         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1182                 int rsize_orig;
1183                 int offs;
1184
1185                 if (drvdata->quirks & QUIRK_T100CHI) {
1186                         rsize_orig = 403;
1187                         offs = 388;
1188                 } else {
1189                         rsize_orig = 306;
1190                         offs = 291;
1191                 }
1192
1193                 /*
1194                  * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
1195                  * (FFh) and clear the flags in the Input() byte.
1196                  * Note the descriptor has a bogus 0 byte at the end so we
1197                  * only need 1 extra byte.
1198                  */
1199                 if (*rsize == rsize_orig &&
1200                         rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
1201                         *rsize = rsize_orig + 1;
1202                         rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
1203                         if (!rdesc)
1204                                 return NULL;
1205
1206                         hid_info(hdev, "Fixing up %s keyb report descriptor\n",
1207                                 drvdata->quirks & QUIRK_T100CHI ?
1208                                 "T100CHI" : "T90CHI");
1209                         memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
1210                         rdesc[offs] = 0x19;
1211                         rdesc[offs + 1] = 0x00;
1212                         rdesc[offs + 2] = 0x29;
1213                         rdesc[offs + 3] = 0xff;
1214                         rdesc[offs + 14] = 0x00;
1215                 }
1216         }
1217
1218         if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1219                  *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1220                 /* report is missing usage mninum and maximum */
1221                 __u8 *new_rdesc;
1222                 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1223
1224                 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
1225                 if (new_rdesc == NULL)
1226                         return rdesc;
1227
1228                 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1229                 /* copy the valid part */
1230                 memcpy(new_rdesc, rdesc, 61);
1231                 /* insert missing part */
1232                 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1233                 /* copy remaining data */
1234                 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1235
1236                 *rsize = new_size;
1237                 rdesc = new_rdesc;
1238         }
1239
1240         if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD &&
1241                         *rsize == 331 && rdesc[190] == 0x85 && rdesc[191] == 0x5a &&
1242                         rdesc[204] == 0x95 && rdesc[205] == 0x05) {
1243                 hid_info(hdev, "Fixing up Asus N-KEY keyb report descriptor\n");
1244                 rdesc[205] = 0x01;
1245         }
1246
1247         return rdesc;
1248 }
1249
1250 static const struct hid_device_id asus_devices[] = {
1251         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1252                 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1253         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1254                 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1255         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1256                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1257         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1258                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1259         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1260                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1262                 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1263           QUIRK_USE_KBD_BACKLIGHT },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1265             USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD),
1266           QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1267         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1268             USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD2),
1269           QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1271             USB_DEVICE_ID_ASUSTEK_ROG_CLAYMORE_II_KEYBOARD),
1272           QUIRK_ROG_CLAYMORE_II_KEYBOARD },
1273         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1274                 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1275           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1276         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1277                 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1278           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1279         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1280         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1281         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1282         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1283                 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1284         { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_MEDION_E1239T),
1285                 QUIRK_MEDION_E1239T },
1286         /*
1287          * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
1288          * part, while letting hid-multitouch.c handle the touchpad.
1289          */
1290         { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1291                 USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1292         { }
1293 };
1294 MODULE_DEVICE_TABLE(hid, asus_devices);
1295
1296 static struct hid_driver asus_driver = {
1297         .name                   = "asus",
1298         .id_table               = asus_devices,
1299         .report_fixup           = asus_report_fixup,
1300         .probe                  = asus_probe,
1301         .remove                 = asus_remove,
1302         .input_mapping          = asus_input_mapping,
1303         .input_configured       = asus_input_configured,
1304 #ifdef CONFIG_PM
1305         .reset_resume           = asus_reset_resume,
1306 #endif
1307         .event                  = asus_event,
1308         .raw_event              = asus_raw_event
1309 };
1310 module_hid_driver(asus_driver);
1311
1312 MODULE_LICENSE("GPL");