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