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 #include <linux/leds.h>
  34
  35 #include "hid-ids.h"
  36
  37 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
  38 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
  39 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
  40 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
  41 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
  42
  43 #define T100_TPAD_INTF 2
  44 #define MEDION_E1239T_TPAD_INTF 1
  45
  46 #define E1239T_TP_TOGGLE_REPORT_ID 0x05
  47 #define T100CHI_MOUSE_REPORT_ID 0x06
  48 #define FEATURE_REPORT_ID 0x0d
  49 #define INPUT_REPORT_ID 0x5d
  50 #define FEATURE_KBD_REPORT_ID 0x5a
  51 #define FEATURE_KBD_REPORT_SIZE 16
  52 #define FEATURE_KBD_LED_REPORT_ID1 0x5d
  53 #define FEATURE_KBD_LED_REPORT_ID2 0x5e
  54
  55 #define SUPPORT_KBD_BACKLIGHT BIT(0)
  56
  57 #define MAX_TOUCH_MAJOR 8
  58 #define MAX_PRESSURE 128
  59
  60 #define BTN_LEFT_MASK 0x01
  61 #define CONTACT_TOOL_TYPE_MASK 0x80
  62 #define CONTACT_X_MSB_MASK 0xf0
  63 #define CONTACT_Y_MSB_MASK 0x0f
  64 #define CONTACT_TOUCH_MAJOR_MASK 0x07
  65 #define CONTACT_PRESSURE_MASK 0x7f
  66
  67 #define BATTERY_REPORT_ID       (0x03)
  68 #define BATTERY_REPORT_SIZE     (1 + 8)
  69 #define BATTERY_LEVEL_MAX       ((u8)255)
  70 #define BATTERY_STAT_DISCONNECT (0)
  71 #define BATTERY_STAT_CHARGING   (1)
  72 #define BATTERY_STAT_FULL       (2)
  73
  74 #define QUIRK_FIX_NOTEBOOK_REPORT       BIT(0)
  75 #define QUIRK_NO_INIT_REPORTS           BIT(1)
  76 #define QUIRK_SKIP_INPUT_MAPPING        BIT(2)
  77 #define QUIRK_IS_MULTITOUCH             BIT(3)
  78 #define QUIRK_NO_CONSUMER_USAGES        BIT(4)
  79 #define QUIRK_USE_KBD_BACKLIGHT         BIT(5)
  80 #define QUIRK_T100_KEYBOARD             BIT(6)
  81 #define QUIRK_T100CHI                   BIT(7)
  82 #define QUIRK_G752_KEYBOARD             BIT(8)
  83 #define QUIRK_T90CHI                    BIT(9)
  84 #define QUIRK_MEDION_E1239T             BIT(10)
  85 #define QUIRK_ROG_NKEY_KEYBOARD         BIT(11)
  86 #define QUIRK_ROG_CLAYMORE_II_KEYBOARD BIT(12)
  87
  88 #define I2C_KEYBOARD_QUIRKS                     (QUIRK_FIX_NOTEBOOK_REPORT | \
  89                                                  QUIRK_NO_INIT_REPORTS | \
  90                                                  QUIRK_NO_CONSUMER_USAGES)
  91 #define I2C_TOUCHPAD_QUIRKS                     (QUIRK_NO_INIT_REPORTS | \
  92                                                  QUIRK_SKIP_INPUT_MAPPING | \
  93                                                  QUIRK_IS_MULTITOUCH)
  94
  95 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
  96
  97 struct asus_kbd_leds {
  98         struct led_classdev cdev;
  99         struct hid_device *hdev;
 100         struct work_struct work;
 101         unsigned int brightness;
 102         spinlock_t lock;
 103         bool removed;
 104 };
 105
 106 struct asus_touchpad_info {
 107         int max_x;
 108         int max_y;
 109         int res_x;
 110         int res_y;
 111         int contact_size;
 112         int max_contacts;
 113         int report_size;
 114 };
 115
 116 struct asus_drvdata {
 117         unsigned long quirks;
 118         struct hid_device *hdev;
 119         struct input_dev *input;
 120         struct input_dev *tp_kbd_input;
 121         struct asus_kbd_leds *kbd_backlight;
 122         const struct asus_touchpad_info *tp;
 123         bool enable_backlight;
 124         struct power_supply *battery;
 125         struct power_supply_desc battery_desc;
 126         int battery_capacity;
 127         int battery_stat;
 128         bool battery_in_query;
 129         unsigned long battery_next_query;
 130 };
 131
 132 static int asus_report_battery(struct asus_drvdata *, u8 *, int);
 133
 134 static const struct asus_touchpad_info asus_i2c_tp = {
 135         .max_x = 2794,
 136         .max_y = 1758,
 137         .contact_size = 5,
 138         .max_contacts = 5,
 139         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 140 };
 141
 142 static const struct asus_touchpad_info asus_t100ta_tp = {
 143         .max_x = 2240,
 144         .max_y = 1120,
 145         .res_x = 30, /* units/mm */
 146         .res_y = 27, /* units/mm */
 147         .contact_size = 5,
 148         .max_contacts = 5,
 149         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 150 };
 151
 152 static const struct asus_touchpad_info asus_t100ha_tp = {
 153         .max_x = 2640,
 154         .max_y = 1320,
 155         .res_x = 30, /* units/mm */
 156         .res_y = 29, /* units/mm */
 157         .contact_size = 5,
 158         .max_contacts = 5,
 159         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 160 };
 161
 162 static const struct asus_touchpad_info asus_t200ta_tp = {
 163         .max_x = 3120,
 164         .max_y = 1716,
 165         .res_x = 30, /* units/mm */
 166         .res_y = 28, /* units/mm */
 167         .contact_size = 5,
 168         .max_contacts = 5,
 169         .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 170 };
 171
 172 static const struct asus_touchpad_info asus_t100chi_tp = {
 173         .max_x = 2640,
 174         .max_y = 1320,
 175         .res_x = 31, /* units/mm */
 176         .res_y = 29, /* units/mm */
 177         .contact_size = 3,
 178         .max_contacts = 4,
 179         .report_size = 15 /* 2 byte header + 3 * 4 + 1 byte footer */,
 180 };
 181
 182 static const struct asus_touchpad_info medion_e1239t_tp = {
 183         .max_x = 2640,
 184         .max_y = 1380,
 185         .res_x = 29, /* units/mm */
 186         .res_y = 28, /* units/mm */
 187         .contact_size = 5,
 188         .max_contacts = 5,
 189         .report_size = 32 /* 2 byte header + 5 * 5 + 5 byte footer */,
 190 };
 191
 192 static void asus_report_contact_down(struct asus_drvdata *drvdat,
 193                 int toolType, u8 *data)
 194 {
 195         struct input_dev *input = drvdat->input;
 196         int touch_major, pressure, x, y;
 197
 198         x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 199         y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
 200
 201         input_report_abs(input, ABS_MT_POSITION_X, x);
 202         input_report_abs(input, ABS_MT_POSITION_Y, y);
 203
 204         if (drvdat->tp->contact_size < 5)
 205                 return;
 206
 207         if (toolType == MT_TOOL_PALM) {
 208                 touch_major = MAX_TOUCH_MAJOR;
 209                 pressure = MAX_PRESSURE;
 210         } else {
 211                 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 212                 pressure = data[4] & CONTACT_PRESSURE_MASK;
 213         }
 214
 215         input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 216         input_report_abs(input, ABS_MT_PRESSURE, pressure);
 217 }
 218
 219 /* Required for Synaptics Palm Detection */
 220 static void asus_report_tool_width(struct asus_drvdata *drvdat)
 221 {
 222         struct input_mt *mt = drvdat->input->mt;
 223         struct input_mt_slot *oldest;
 224         int oldid, i;
 225
 226         if (drvdat->tp->contact_size < 5)
 227                 return;
 228
 229         oldest = NULL;
 230         oldid = mt->trkid;
 231
 232         for (i = 0; i < mt->num_slots; ++i) {
 233                 struct input_mt_slot *ps = &mt->slots[i];
 234                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
 235
 236                 if (id < 0)
 237                         continue;
 238                 if ((id - oldid) & TRKID_SGN) {
 239                         oldest = ps;
 240                         oldid = id;
 241                 }
 242         }
 243
 244         if (oldest) {
 245                 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
 246                         input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 247         }
 248 }
 249
 250 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
 251 {
 252         int i, toolType = MT_TOOL_FINGER;
 253         u8 *contactData = data + 2;
 254
 255         if (size != drvdat->tp->report_size)
 256                 return 0;
 257
 258         for (i = 0; i < drvdat->tp->max_contacts; i++) {
 259                 bool down = !!(data[1] & BIT(i+3));
 260
 261                 if (drvdat->tp->contact_size >= 5)
 262                         toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 263                                                 MT_TOOL_PALM : MT_TOOL_FINGER;
 264
 265                 input_mt_slot(drvdat->input, i);
 266                 input_mt_report_slot_state(drvdat->input, toolType, down);
 267
 268                 if (down) {
 269                         asus_report_contact_down(drvdat, toolType, contactData);
 270                         contactData += drvdat->tp->contact_size;
 271                 }
 272         }
 273
 274         input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 275         asus_report_tool_width(drvdat);
 276
 277         input_mt_sync_frame(drvdat->input);
 278         input_sync(drvdat->input);
 279
 280         return 1;
 281 }
 282
 283 static int asus_e1239t_event(struct asus_drvdata *drvdat, u8 *data, int size)
 284 {
 285         if (size != 3)
 286                 return 0;
 287
 288         /* Handle broken mute key which only sends press events */
 289         if (!drvdat->tp &&
 290             data[0] == 0x02 && data[1] == 0xe2 && data[2] == 0x00) {
 291                 input_report_key(drvdat->input, KEY_MUTE, 1);
 292                 input_sync(drvdat->input);
 293                 input_report_key(drvdat->input, KEY_MUTE, 0);
 294                 input_sync(drvdat->input);
 295                 return 1;
 296         }
 297
 298         /* Handle custom touchpad toggle key which only sends press events */
 299         if (drvdat->tp_kbd_input &&
 300             data[0] == 0x05 && data[1] == 0x02 && data[2] == 0x28) {
 301                 input_report_key(drvdat->tp_kbd_input, KEY_F21, 1);
 302                 input_sync(drvdat->tp_kbd_input);
 303                 input_report_key(drvdat->tp_kbd_input, KEY_F21, 0);
 304                 input_sync(drvdat->tp_kbd_input);
 305                 return 1;
 306         }
 307
 308         return 0;
 309 }
 310
 311 static int asus_event(struct hid_device *hdev, struct hid_field *field,
 312                       struct hid_usage *usage, __s32 value)
 313 {
 314         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
 315             (usage->hid & HID_USAGE) != 0x00 &&
 316             (usage->hid & HID_USAGE) != 0xff && !usage->type) {
 317                 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
 318                          usage->hid & HID_USAGE);
 319         }
 320
 321         return 0;
 322 }
 323
 324 static int asus_raw_event(struct hid_device *hdev,
 325                 struct hid_report *report, u8 *data, int size)
 326 {
 327         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 328
 329         if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
 330                 return asus_report_battery(drvdata, data, size);
 331
 332         if (drvdata->tp && data[0] == INPUT_REPORT_ID)
 333                 return asus_report_input(drvdata, data, size);
 334
 335         if (drvdata->quirks & QUIRK_MEDION_E1239T)
 336                 return asus_e1239t_event(drvdata, data, size);
 337
 338         if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) {
 339                 /*
 340                  * Skip these report ID, the device emits a continuous stream associated
 341                  * with the AURA mode it is in which looks like an 'echo'.
 342                 */
 343                 if (report->id == FEATURE_KBD_LED_REPORT_ID1 ||
 344                                 report->id == FEATURE_KBD_LED_REPORT_ID2) {
 345                         return -1;
 346                 /* Additional report filtering */
 347                 } else if (report->id == FEATURE_KBD_REPORT_ID) {
 348                         /*
 349                          * G14 and G15 send these codes on some keypresses with no
 350                          * discernable reason for doing so. We'll filter them out to avoid
 351                          * unmapped warning messages later.
 352                         */
 353                         if (data[1] == 0xea || data[1] == 0xec || data[1] == 0x02 ||
 354                                         data[1] == 0x8a || data[1] == 0x9e) {
 355                                 return -1;
 356                         }
 357                 }
 358                 if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 359                         /*
 360                          * G713 and G733 send these codes on some keypresses, depending on
 361                          * the key pressed it can trigger a shutdown event if not caught.
 362                         */
 363                         if(data[0] == 0x02 && data[1] == 0x30) {
 364                                 return -1;
 365                         }
 366                 }
 367
 368         }
 369
 370         if (drvdata->quirks & QUIRK_ROG_CLAYMORE_II_KEYBOARD) {
 371                 /*
 372                  * CLAYMORE II keyboard sends this packet when it goes to sleep
 373                  * this causes the whole system to go into suspend.
 374                 */
 375
 376                 if(size == 2 && data[0] == 0x02 && data[1] == 0x00) {
 377                         return -1;
 378                 }
 379         }
 380
 381         return 0;
 382 }
 383
 384 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
 385 {
 386         unsigned char *dmabuf;
 387         int ret;
 388
 389         dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
 390         if (!dmabuf)
 391                 return -ENOMEM;
 392
 393         /*
 394          * The report ID should be set from the incoming buffer due to LED and key
 395          * interfaces having different pages
 396         */
 397         ret = hid_hw_raw_request(hdev, buf[0], dmabuf,
 398                                  buf_size, HID_FEATURE_REPORT,
 399                                  HID_REQ_SET_REPORT);
 400         kfree(dmabuf);
 401
 402         return ret;
 403 }
 404
 405 static int asus_kbd_init(struct hid_device *hdev)
 406 {
 407         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
 408                      0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 409         int ret;
 410
 411         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 412         if (ret < 0)
 413                 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
 414
 415         return ret;
 416 }
 417
 418 static int asus_kbd_get_functions(struct hid_device *hdev,
 419                                   unsigned char *kbd_func)
 420 {
 421         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
 422         u8 *readbuf;
 423         int ret;
 424
 425         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 426         if (ret < 0) {
 427                 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
 428                 return ret;
 429         }
 430
 431         readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
 432         if (!readbuf)
 433                 return -ENOMEM;
 434
 435         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
 436                                  FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
 437                                  HID_REQ_GET_REPORT);
 438         if (ret < 0) {
 439                 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
 440                 kfree(readbuf);
 441                 return ret;
 442         }
 443
 444         *kbd_func = readbuf[6];
 445
 446         kfree(readbuf);
 447         return ret;
 448 }
 449
 450 static int rog_nkey_led_init(struct hid_device *hdev)
 451 {
 452         u8 buf_init_start[] = { FEATURE_KBD_LED_REPORT_ID1, 0xB9 };
 453         u8 buf_init2[] = { FEATURE_KBD_LED_REPORT_ID1, 0x41, 0x53, 0x55, 0x53, 0x20,
 454                                 0x54, 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 455         u8 buf_init3[] = { FEATURE_KBD_LED_REPORT_ID1,
 456                                                 0x05, 0x20, 0x31, 0x00, 0x08 };
 457         int ret;
 458
 459         hid_info(hdev, "Asus initialise N-KEY Device");
 460         /* The first message is an init start */
 461         ret = asus_kbd_set_report(hdev, buf_init_start, sizeof(buf_init_start));
 462         if (ret < 0) {
 463                 hid_warn(hdev, "Asus failed to send init start command: %d\n", ret);
 464                 return ret;
 465         }
 466         /* Followed by a string */
 467         ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 468         if (ret < 0) {
 469                 hid_warn(hdev, "Asus failed to send init command 1.0: %d\n", ret);
 470                 return ret;
 471         }
 472         /* Followed by a string */
 473         ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 474         if (ret < 0) {
 475                 hid_warn(hdev, "Asus failed to send init command 1.1: %d\n", ret);
 476                 return ret;
 477         }
 478
 479         /* begin second report ID with same data */
 480         buf_init2[0] = FEATURE_KBD_LED_REPORT_ID2;
 481         buf_init3[0] = FEATURE_KBD_LED_REPORT_ID2;
 482
 483         ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 484         if (ret < 0) {
 485                 hid_warn(hdev, "Asus failed to send init command 2.0: %d\n", ret);
 486                 return ret;
 487         }
 488         ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 489         if (ret < 0)
 490                 hid_warn(hdev, "Asus failed to send init command 2.1: %d\n", ret);
 491
 492         return ret;
 493 }
 494
 495 static void asus_schedule_work(struct asus_kbd_leds *led)
 496 {
 497         unsigned long flags;
 498
 499         spin_lock_irqsave(&led->lock, flags);
 500         if (!led->removed)
 501                 schedule_work(&led->work);
 502         spin_unlock_irqrestore(&led->lock, flags);
 503 }
 504
 505 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
 506                                    enum led_brightness brightness)
 507 {
 508         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 509                                                  cdev);
 510         unsigned long flags;
 511
 512         spin_lock_irqsave(&led->lock, flags);
 513         led->brightness = brightness;
 514         spin_unlock_irqrestore(&led->lock, flags);
 515
 516         asus_schedule_work(led);
 517 }
 518
 519 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
 520 {
 521         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 522                                                  cdev);
 523         enum led_brightness brightness;
 524         unsigned long flags;
 525
 526         spin_lock_irqsave(&led->lock, flags);
 527         brightness = led->brightness;
 528         spin_unlock_irqrestore(&led->lock, flags);
 529
 530         return brightness;
 531 }
 532
 533 static void asus_kbd_backlight_work(struct work_struct *work)
 534 {
 535         struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
 536         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
 537         int ret;
 538         unsigned long flags;
 539
 540         spin_lock_irqsave(&led->lock, flags);
 541         buf[4] = led->brightness;
 542         spin_unlock_irqrestore(&led->lock, flags);
 543
 544         ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
 545         if (ret < 0)
 546                 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
 547 }
 548
 549 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
 550  * precedence. We only activate HID-based backlight control when the
 551  * WMI control is not available.
 552  */
 553 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
 554 {
 555         u32 value;
 556         int ret;
 557
 558         if (!IS_ENABLED(CONFIG_ASUS_WMI))
 559                 return false;
 560
 561         ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS,
 562                                        ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value);
 563         hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
 564         if (ret)
 565                 return false;
 566
 567         return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
 568 }
 569
 570 static int asus_kbd_register_leds(struct hid_device *hdev)
 571 {
 572         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 573         unsigned char kbd_func;
 574         int ret;
 575
 576         if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 577                 ret = rog_nkey_led_init(hdev);
 578                 if (ret < 0)
 579                         return ret;
 580         } else {
 581                 /* Initialize keyboard */
 582                 ret = asus_kbd_init(hdev);
 583                 if (ret < 0)
 584                         return ret;
 585
 586                 /* Get keyboard functions */
 587                 ret = asus_kbd_get_functions(hdev, &kbd_func);
 588                 if (ret < 0)
 589                         return ret;
 590
 591                 /* Check for backlight support */
 592                 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
 593                         return -ENODEV;
 594         }
 595
 596         drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
 597                                               sizeof(struct asus_kbd_leds),
 598                                               GFP_KERNEL);
 599         if (!drvdata->kbd_backlight)
 600                 return -ENOMEM;
 601
 602         drvdata->kbd_backlight->removed = false;
 603         drvdata->kbd_backlight->brightness = 0;
 604         drvdata->kbd_backlight->hdev = hdev;
 605         drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
 606         drvdata->kbd_backlight->cdev.max_brightness = 3;
 607         drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
 608         drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
 609         INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
 610         spin_lock_init(&drvdata->kbd_backlight->lock);
 611
 612         ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
 613         if (ret < 0) {
 614                 /* No need to have this still around */
 615                 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
 616         }
 617
 618         return ret;
 619 }
 620
 621 /*
 622  * [0]       REPORT_ID (same value defined in report descriptor)
 623  * [1]       rest battery level. range [0..255]
 624  * [2]..[7]  Bluetooth hardware address (MAC address)
 625  * [8]       charging status
 626  *            = 0 : AC offline / discharging
 627  *            = 1 : AC online  / charging
 628  *            = 2 : AC online  / fully charged
 629  */
 630 static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 631 {
 632         u8 sts;
 633         u8 lvl;
 634         int val;
 635
 636         lvl = data[1];
 637         sts = data[8];
 638
 639         drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
 640
 641         switch (sts) {
 642         case BATTERY_STAT_CHARGING:
 643                 val = POWER_SUPPLY_STATUS_CHARGING;
 644                 break;
 645         case BATTERY_STAT_FULL:
 646                 val = POWER_SUPPLY_STATUS_FULL;
 647                 break;
 648         case BATTERY_STAT_DISCONNECT:
 649         default:
 650                 val = POWER_SUPPLY_STATUS_DISCHARGING;
 651                 break;
 652         }
 653         drvdata->battery_stat = val;
 654
 655         return 0;
 656 }
 657
 658 static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 659 {
 660         /* notify only the autonomous event by device */
 661         if ((drvdata->battery_in_query == false) &&
 662                          (size == BATTERY_REPORT_SIZE))
 663                 power_supply_changed(drvdata->battery);
 664
 665         return 0;
 666 }
 667
 668 static int asus_battery_query(struct asus_drvdata *drvdata)
 669 {
 670         u8 *buf;
 671         int ret = 0;
 672
 673         buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
 674         if (!buf)
 675                 return -ENOMEM;
 676
 677         drvdata->battery_in_query = true;
 678         ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
 679                                 buf, BATTERY_REPORT_SIZE,
 680                                 HID_INPUT_REPORT, HID_REQ_GET_REPORT);
 681         drvdata->battery_in_query = false;
 682         if (ret == BATTERY_REPORT_SIZE)
 683                 ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
 684         else
 685                 ret = -ENODATA;
 686
 687         kfree(buf);
 688
 689         return ret;
 690 }
 691
 692 static enum power_supply_property asus_battery_props[] = {
 693         POWER_SUPPLY_PROP_STATUS,
 694         POWER_SUPPLY_PROP_PRESENT,
 695         POWER_SUPPLY_PROP_CAPACITY,
 696         POWER_SUPPLY_PROP_SCOPE,
 697         POWER_SUPPLY_PROP_MODEL_NAME,
 698 };
 699
 700 #define QUERY_MIN_INTERVAL      (60 * HZ)       /* 60[sec] */
 701
 702 static int asus_battery_get_property(struct power_supply *psy,
 703                                 enum power_supply_property psp,
 704                                 union power_supply_propval *val)
 705 {
 706         struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
 707         int ret = 0;
 708
 709         switch (psp) {
 710         case POWER_SUPPLY_PROP_STATUS:
 711         case POWER_SUPPLY_PROP_CAPACITY:
 712                 if (time_before(drvdata->battery_next_query, jiffies)) {
 713                         drvdata->battery_next_query =
 714                                          jiffies + QUERY_MIN_INTERVAL;
 715                         ret = asus_battery_query(drvdata);
 716                         if (ret)
 717                                 return ret;
 718                 }
 719                 if (psp == POWER_SUPPLY_PROP_STATUS)
 720                         val->intval = drvdata->battery_stat;
 721                 else
 722                         val->intval = drvdata->battery_capacity;
 723                 break;
 724         case POWER_SUPPLY_PROP_PRESENT:
 725                 val->intval = 1;
 726                 break;
 727         case POWER_SUPPLY_PROP_SCOPE:
 728                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 729                 break;
 730         case POWER_SUPPLY_PROP_MODEL_NAME:
 731                 val->strval = drvdata->hdev->name;
 732                 break;
 733         default:
 734                 ret = -EINVAL;
 735                 break;
 736         }
 737
 738         return ret;
 739 }
 740
 741 static int asus_battery_probe(struct hid_device *hdev)
 742 {
 743         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 744         struct power_supply_config pscfg = { .drv_data = drvdata };
 745         int ret = 0;
 746
 747         drvdata->battery_capacity = 0;
 748         drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
 749         drvdata->battery_in_query = false;
 750
 751         drvdata->battery_desc.properties = asus_battery_props;
 752         drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
 753         drvdata->battery_desc.get_property = asus_battery_get_property;
 754         drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 755         drvdata->battery_desc.use_for_apm = 0;
 756         drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 757                                         "asus-keyboard-%s-battery",
 758                                         strlen(hdev->uniq) ?
 759                                         hdev->uniq : dev_name(&hdev->dev));
 760         if (!drvdata->battery_desc.name)
 761                 return -ENOMEM;
 762
 763         drvdata->battery_next_query = jiffies;
 764
 765         drvdata->battery = devm_power_supply_register(&hdev->dev,
 766                                 &(drvdata->battery_desc), &pscfg);
 767         if (IS_ERR(drvdata->battery)) {
 768                 ret = PTR_ERR(drvdata->battery);
 769                 drvdata->battery = NULL;
 770                 hid_err(hdev, "Unable to register battery device\n");
 771                 return ret;
 772         }
 773
 774         power_supply_powers(drvdata->battery, &hdev->dev);
 775
 776         return ret;
 777 }
 778
 779 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 780 {
 781         struct input_dev *input = hi->input;
 782         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 783
 784         /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
 785         if (drvdata->quirks & QUIRK_T100CHI &&
 786             hi->report->id != T100CHI_MOUSE_REPORT_ID)
 787                 return 0;
 788
 789         /* Handle MULTI_INPUT on E1239T mouse/touchpad USB interface */
 790         if (drvdata->tp && (drvdata->quirks & QUIRK_MEDION_E1239T)) {
 791                 switch (hi->report->id) {
 792                 case E1239T_TP_TOGGLE_REPORT_ID:
 793                         input_set_capability(input, EV_KEY, KEY_F21);
 794                         input->name = "Asus Touchpad Keys";
 795                         drvdata->tp_kbd_input = input;
 796                         return 0;
 797                 case INPUT_REPORT_ID:
 798                         break; /* Touchpad report, handled below */
 799                 default:
 800                         return 0; /* Ignore other reports */
 801                 }
 802         }
 803
 804         if (drvdata->tp) {
 805                 int ret;
 806
 807                 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
 808                                      drvdata->tp->max_x, 0, 0);
 809                 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
 810                                      drvdata->tp->max_y, 0, 0);
 811                 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
 812                 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
 813
 814                 if (drvdata->tp->contact_size >= 5) {
 815                         input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
 816                                              MAX_TOUCH_MAJOR, 0, 0);
 817                         input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
 818                                              MAX_TOUCH_MAJOR, 0, 0);
 819                         input_set_abs_params(input, ABS_MT_PRESSURE, 0,
 820                                               MAX_PRESSURE, 0, 0);
 821                 }
 822
 823                 __set_bit(BTN_LEFT, input->keybit);
 824                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 825
 826                 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
 827                                           INPUT_MT_POINTER);
 828
 829                 if (ret) {
 830                         hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 831                         return ret;
 832                 }
 833         }
 834
 835         drvdata->input = input;
 836
 837         if (drvdata->enable_backlight &&
 838             !asus_kbd_wmi_led_control_present(hdev) &&
 839             asus_kbd_register_leds(hdev))
 840                 hid_warn(hdev, "Failed to initialize backlight.\n");
 841
 842         return 0;
 843 }
 844
 845 #define asus_map_key_clear(c)   hid_map_usage_clear(hi, usage, bit, \
 846                                                     max, EV_KEY, (c))
 847 static int asus_input_mapping(struct hid_device *hdev,
 848                 struct hid_input *hi, struct hid_field *field,
 849                 struct hid_usage *usage, unsigned long **bit,
 850                 int *max)
 851 {
 852         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 853
 854         if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 855                 /* Don't map anything from the HID report.
 856                  * We do it all manually in asus_input_configured
 857                  */
 858                 return -1;
 859         }
 860
 861         /*
 862          * Ignore a bunch of bogus collections in the T100CHI descriptor.
 863          * This avoids a bunch of non-functional hid_input devices getting
 864          * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
 865          */
 866         if ((drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) &&
 867             (field->application == (HID_UP_GENDESK | 0x0080) ||
 868              field->application == HID_GD_MOUSE ||
 869              usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
 870              usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
 871              usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)))
 872                 return -1;
 873
 874         /* ASUS-specific keyboard hotkeys and led backlight */
 875         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_ASUSVENDOR) {
 876                 switch (usage->hid & HID_USAGE) {
 877                 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
 878                 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);                break;
 879                 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);         break;
 880                 case 0x6c: asus_map_key_clear(KEY_SLEEP);               break;
 881                 case 0x7c: asus_map_key_clear(KEY_MICMUTE);             break;
 882                 case 0x82: asus_map_key_clear(KEY_CAMERA);              break;
 883                 case 0x88: asus_map_key_clear(KEY_RFKILL);                      break;
 884                 case 0xb5: asus_map_key_clear(KEY_CALC);                        break;
 885                 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);          break;
 886                 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);                break;
 887                 case 0xc7: asus_map_key_clear(KEY_KBDILLUMTOGGLE);      break;
 888
 889                 case 0x6b: asus_map_key_clear(KEY_F21);         break; /* ASUS touchpad toggle */
 890                 case 0x38: asus_map_key_clear(KEY_PROG1);       break; /* ROG key */
 891                 case 0xba: asus_map_key_clear(KEY_PROG2);       break; /* Fn+C ASUS Splendid */
 892                 case 0x5c: asus_map_key_clear(KEY_PROG3);       break; /* Fn+Space Power4Gear */
 893                 case 0x99: asus_map_key_clear(KEY_PROG4);       break; /* Fn+F5 "fan" symbol */
 894                 case 0xae: asus_map_key_clear(KEY_PROG4);       break; /* Fn+F5 "fan" symbol */
 895                 case 0x92: asus_map_key_clear(KEY_CALC);        break; /* Fn+Ret "Calc" symbol */
 896                 case 0xb2: asus_map_key_clear(KEY_PROG2);       break; /* Fn+Left previous aura */
 897                 case 0xb3: asus_map_key_clear(KEY_PROG3);       break; /* Fn+Left next aura */
 898                 case 0x6a: asus_map_key_clear(KEY_F13);         break; /* Screenpad toggle */
 899                 case 0x4b: asus_map_key_clear(KEY_F14);         break; /* Arrows/Pg-Up/Dn toggle */
 900
 901
 902                 default:
 903                         /* ASUS lazily declares 256 usages, ignore the rest,
 904                          * as some make the keyboard appear as a pointer device. */
 905                         return -1;
 906                 }
 907
 908                 /*
 909                  * Check and enable backlight only on devices with UsagePage ==
 910                  * 0xff31 to avoid initializing the keyboard firmware multiple
 911                  * times on devices with multiple HID descriptors but same
 912                  * PID/VID.
 913                  */
 914                 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
 915                         drvdata->enable_backlight = true;
 916
 917                 set_bit(EV_REP, hi->input->evbit);
 918                 return 1;
 919         }
 920
 921         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
 922                 switch (usage->hid & HID_USAGE) {
 923                 case 0xff01: asus_map_key_clear(BTN_1); break;
 924                 case 0xff02: asus_map_key_clear(BTN_2); break;
 925                 case 0xff03: asus_map_key_clear(BTN_3); break;
 926                 case 0xff04: asus_map_key_clear(BTN_4); break;
 927                 case 0xff05: asus_map_key_clear(BTN_5); break;
 928                 case 0xff06: asus_map_key_clear(BTN_6); break;
 929                 case 0xff07: asus_map_key_clear(BTN_7); break;
 930                 case 0xff08: asus_map_key_clear(BTN_8); break;
 931                 case 0xff09: asus_map_key_clear(BTN_9); break;
 932                 case 0xff0a: asus_map_key_clear(BTN_A); break;
 933                 case 0xff0b: asus_map_key_clear(BTN_B); break;
 934                 case 0x00f1: asus_map_key_clear(KEY_WLAN);      break;
 935                 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);    break;
 936                 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);      break;
 937                 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);       break;
 938                 case 0x00f7: asus_map_key_clear(KEY_CAMERA);    break;
 939                 case 0x00f8: asus_map_key_clear(KEY_PROG1);     break;
 940                 default:
 941                         return 0;
 942                 }
 943
 944                 set_bit(EV_REP, hi->input->evbit);
 945                 return 1;
 946         }
 947
 948         if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
 949                 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
 950                 switch (usage->hid & HID_USAGE) {
 951                 case 0xe2: /* Mute */
 952                 case 0xe9: /* Volume up */
 953                 case 0xea: /* Volume down */
 954                         return 0;
 955                 default:
 956                         /* Ignore dummy Consumer usages which make the
 957                          * keyboard incorrectly appear as a pointer device.
 958                          */
 959                         return -1;
 960                 }
 961         }
 962
 963         /*
 964          * The mute button is broken and only sends press events, we
 965          * deal with this in our raw_event handler, so do not map it.
 966          */
 967         if ((drvdata->quirks & QUIRK_MEDION_E1239T) &&
 968             usage->hid == (HID_UP_CONSUMER | 0xe2)) {
 969                 input_set_capability(hi->input, EV_KEY, KEY_MUTE);
 970                 return -1;
 971         }
 972
 973         return 0;
 974 }
 975
 976 static int asus_start_multitouch(struct hid_device *hdev)
 977 {
 978         int ret;
 979         static const unsigned char buf[] = {
 980                 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
 981         };
 982         unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 983
 984         if (!dmabuf) {
 985                 ret = -ENOMEM;
 986                 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 987                 return ret;
 988         }
 989
 990         ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
 991                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
 992
 993         kfree(dmabuf);
 994
 995         if (ret != sizeof(buf)) {
 996                 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
 997                 return ret;
 998         }
 999
1000         return 0;
1001 }
1002
1003 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
1004 {
1005         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1006
1007         if (drvdata->tp)
1008                 return asus_start_multitouch(hdev);
1009
1010         return 0;
1011 }
1012
1013 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
1014 {
1015         int ret;
1016         struct asus_drvdata *drvdata;
1017
1018         drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
1019         if (drvdata == NULL) {
1020                 hid_err(hdev, "Can't alloc Asus descriptor\n");
1021                 return -ENOMEM;
1022         }
1023
1024         hid_set_drvdata(hdev, drvdata);
1025
1026         drvdata->quirks = id->driver_data;
1027
1028         /*
1029          * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
1030          * Thus, identify T90CHI dock with product name string.
1031          */
1032         if (strstr(hdev->name, "T90CHI")) {
1033                 drvdata->quirks &= ~QUIRK_T100CHI;
1034                 drvdata->quirks |= QUIRK_T90CHI;
1035         }
1036
1037         if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
1038                 drvdata->tp = &asus_i2c_tp;
1039
1040         if ((drvdata->quirks & QUIRK_T100_KEYBOARD) && hid_is_usb(hdev)) {
1041                 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1042
1043                 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
1044                         drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
1045                         /*
1046                          * The T100HA uses the same USB-ids as the T100TAF and
1047                          * the T200TA uses the same USB-ids as the T100TA, while
1048                          * both have different max x/y values as the T100TA[F].
1049                          */
1050                         if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
1051                                 drvdata->tp = &asus_t100ha_tp;
1052                         else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
1053                                 drvdata->tp = &asus_t200ta_tp;
1054                         else
1055                                 drvdata->tp = &asus_t100ta_tp;
1056                 }
1057         }
1058
1059         if (drvdata->quirks & QUIRK_T100CHI) {
1060                 /*
1061                  * All functionality is on a single HID interface and for
1062                  * userspace the touchpad must be a separate input_dev.
1063                  */
1064                 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1065                 drvdata->tp = &asus_t100chi_tp;
1066         }
1067
1068         if ((drvdata->quirks & QUIRK_MEDION_E1239T) && hid_is_usb(hdev)) {
1069                 struct usb_host_interface *alt =
1070                         to_usb_interface(hdev->dev.parent)->altsetting;
1071
1072                 if (alt->desc.bInterfaceNumber == MEDION_E1239T_TPAD_INTF) {
1073                         /* For separate input-devs for tp and tp toggle key */
1074                         hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1075                         drvdata->quirks |= QUIRK_SKIP_INPUT_MAPPING;
1076                         drvdata->tp = &medion_e1239t_tp;
1077                 }
1078         }
1079
1080         if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
1081                 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1082
1083         drvdata->hdev = hdev;
1084
1085         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1086                 ret = asus_battery_probe(hdev);
1087                 if (ret) {
1088                         hid_err(hdev,
1089                             "Asus hid battery_probe failed: %d\n", ret);
1090                         return ret;
1091                 }
1092         }
1093
1094         ret = hid_parse(hdev);
1095         if (ret) {
1096                 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
1097                 return ret;
1098         }
1099
1100         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1101         if (ret) {
1102                 hid_err(hdev, "Asus hw start failed: %d\n", ret);
1103                 return ret;
1104         }
1105
1106         if (!drvdata->input) {
1107                 hid_err(hdev, "Asus input not registered\n");
1108                 ret = -ENOMEM;
1109                 goto err_stop_hw;
1110         }
1111
1112         if (drvdata->tp) {
1113                 drvdata->input->name = "Asus TouchPad";
1114         } else {
1115                 drvdata->input->name = "Asus Keyboard";
1116         }
1117
1118         if (drvdata->tp) {
1119                 ret = asus_start_multitouch(hdev);
1120                 if (ret)
1121                         goto err_stop_hw;
1122         }
1123
1124         return 0;
1125 err_stop_hw:
1126         hid_hw_stop(hdev);
1127         return ret;
1128 }
1129
1130 static void asus_remove(struct hid_device *hdev)
1131 {
1132         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1133         unsigned long flags;
1134
1135         if (drvdata->kbd_backlight) {
1136                 spin_lock_irqsave(&drvdata->kbd_backlight->lock, flags);
1137                 drvdata->kbd_backlight->removed = true;
1138                 spin_unlock_irqrestore(&drvdata->kbd_backlight->lock, flags);
1139
1140                 cancel_work_sync(&drvdata->kbd_backlight->work);
1141         }
1142
1143         hid_hw_stop(hdev);
1144 }
1145
1146 static const __u8 asus_g752_fixed_rdesc[] = {
1147         0x19, 0x00,                     /*   Usage Minimum (0x00)       */
1148         0x2A, 0xFF, 0x00,               /*   Usage Maximum (0xFF)       */
1149 };
1150
1151 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1152                 unsigned int *rsize)
1153 {
1154         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1155
1156         if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
1157                         *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
1158                 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
1159                 rdesc[55] = 0xdd;
1160         }
1161         /* For the T100TA/T200TA keyboard dock */
1162         if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
1163                  (*rsize == 76 || *rsize == 101) &&
1164                  rdesc[73] == 0x81 && rdesc[74] == 0x01) {
1165                 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
1166                 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
1167         }
1168         /* For the T100CHI/T90CHI keyboard dock */
1169         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1170                 int rsize_orig;
1171                 int offs;
1172
1173                 if (drvdata->quirks & QUIRK_T100CHI) {
1174                         rsize_orig = 403;
1175                         offs = 388;
1176                 } else {
1177                         rsize_orig = 306;
1178                         offs = 291;
1179                 }
1180
1181                 /*
1182                  * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
1183                  * (FFh) and clear the flags in the Input() byte.
1184                  * Note the descriptor has a bogus 0 byte at the end so we
1185                  * only need 1 extra byte.
1186                  */
1187                 if (*rsize == rsize_orig &&
1188                         rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
1189                         *rsize = rsize_orig + 1;
1190                         rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
1191                         if (!rdesc)
1192                                 return NULL;
1193
1194                         hid_info(hdev, "Fixing up %s keyb report descriptor\n",
1195                                 drvdata->quirks & QUIRK_T100CHI ?
1196                                 "T100CHI" : "T90CHI");
1197                         memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
1198                         rdesc[offs] = 0x19;
1199                         rdesc[offs + 1] = 0x00;
1200                         rdesc[offs + 2] = 0x29;
1201                         rdesc[offs + 3] = 0xff;
1202                         rdesc[offs + 14] = 0x00;
1203                 }
1204         }
1205
1206         if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1207                  *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1208                 /* report is missing usage mninum and maximum */
1209                 __u8 *new_rdesc;
1210                 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1211
1212                 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
1213                 if (new_rdesc == NULL)
1214                         return rdesc;
1215
1216                 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1217                 /* copy the valid part */
1218                 memcpy(new_rdesc, rdesc, 61);
1219                 /* insert missing part */
1220                 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1221                 /* copy remaining data */
1222                 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1223
1224                 *rsize = new_size;
1225                 rdesc = new_rdesc;
1226         }
1227
1228         if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD &&
1229                         *rsize == 331 && rdesc[190] == 0x85 && rdesc[191] == 0x5a &&
1230                         rdesc[204] == 0x95 && rdesc[205] == 0x05) {
1231                 hid_info(hdev, "Fixing up Asus N-KEY keyb report descriptor\n");
1232                 rdesc[205] = 0x01;
1233         }
1234
1235         return rdesc;
1236 }
1237
1238 static const struct hid_device_id asus_devices[] = {
1239         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1240                 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1241         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1242                 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1243         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1244                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1245         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1246                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1247         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1248                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1249         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1250                 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1251           QUIRK_USE_KBD_BACKLIGHT },
1252         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1253             USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD),
1254           QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1255         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1256             USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD2),
1257           QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1258         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1259             USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD3),
1260           QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1262             USB_DEVICE_ID_ASUSTEK_ROG_CLAYMORE_II_KEYBOARD),
1263           QUIRK_ROG_CLAYMORE_II_KEYBOARD },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1265                 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1266           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1267         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1268                 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1269           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1271         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1272         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1273         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1274                 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1275         { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_MEDION_E1239T),
1276                 QUIRK_MEDION_E1239T },
1277         /*
1278          * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
1279          * part, while letting hid-multitouch.c handle the touchpad.
1280          */
1281         { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1282                 USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1283         { }
1284 };
1285 MODULE_DEVICE_TABLE(hid, asus_devices);
1286
1287 static struct hid_driver asus_driver = {
1288         .name                   = "asus",
1289         .id_table               = asus_devices,
1290         .report_fixup           = asus_report_fixup,
1291         .probe                  = asus_probe,
1292         .remove                 = asus_remove,
1293         .input_mapping          = asus_input_mapping,
1294         .input_configured       = asus_input_configured,
1295 #ifdef CONFIG_PM
1296         .reset_resume           = asus_reset_resume,
1297 #endif
1298         .event                  = asus_event,
1299         .raw_event              = asus_raw_event
1300 };
1301 module_hid_driver(asus_driver);
1302
1303 MODULE_LICENSE("GPL");