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