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