drivers/hid/hid-asus.c

   1 /*
   2  *  HID driver for Asus notebook built-in keyboard.
   3  *  Fixes small logical maximum to match usage maximum.
   4  *
   5  *  Currently supported devices are:
   6  *    EeeBook X205TA
   7  *    VivoBook E200HA
   8  *
   9  *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
  10  *
  11  *  This module based on hid-ortek by
  12  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
  13  *  Copyright (c) 2011 Jiri Kosina
  14  *
  15  *  This module has been updated to add support for Asus i2c touchpad.
  16  *
  17  *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
  18  *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
  19  *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/dmi.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/platform_data/x86/asus-wmi.h>
  33 #include <linux/input/mt.h>
  34 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
  35 #include <linux/power_supply.h>
  36
  37 #include "hid-ids.h"
  38
  39 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
  40 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
  41 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
  42 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
  43 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
  44
  45 #define T100_TPAD_INTF 2
  46
  47 #define T100CHI_MOUSE_REPORT_ID 0x06
  48 #define FEATURE_REPORT_ID 0x0d
  49 #define INPUT_REPORT_ID 0x5d
  50 #define FEATURE_KBD_REPORT_ID 0x5a
  51 #define FEATURE_KBD_REPORT_SIZE 16
  52
  53 #define SUPPORT_KBD_BACKLIGHT BIT(0)
  54
  55 #define MAX_TOUCH_MAJOR 8
  56 #define MAX_PRESSURE 128
  57
  58 #define BTN_LEFT_MASK 0x01
  59 #define CONTACT_TOOL_TYPE_MASK 0x80
  60 #define CONTACT_X_MSB_MASK 0xf0
  61 #define CONTACT_Y_MSB_MASK 0x0f
  62 #define CONTACT_TOUCH_MAJOR_MASK 0x07
  63 #define CONTACT_PRESSURE_MASK 0x7f
  64
  65 #define BATTERY_REPORT_ID       (0x03)
  66 #define BATTERY_REPORT_SIZE     (1 + 8)
  67 #define BATTERY_LEVEL_MAX       ((u8)255)
  68 #define BATTERY_STAT_DISCONNECT (0)
  69 #define BATTERY_STAT_CHARGING   (1)
  70 #define BATTERY_STAT_FULL       (2)
  71
  72 #define QUIRK_FIX_NOTEBOOK_REPORT       BIT(0)
  73 #define QUIRK_NO_INIT_REPORTS           BIT(1)
  74 #define QUIRK_SKIP_INPUT_MAPPING        BIT(2)
  75 #define QUIRK_IS_MULTITOUCH             BIT(3)
  76 #define QUIRK_NO_CONSUMER_USAGES        BIT(4)
  77 #define QUIRK_USE_KBD_BACKLIGHT         BIT(5)
  78 #define QUIRK_T100_KEYBOARD             BIT(6)
  79 #define QUIRK_T100CHI                   BIT(7)
  80 #define QUIRK_G752_KEYBOARD             BIT(8)
  81 #define QUIRK_T101HA_DOCK               BIT(9)
  82 #define QUIRK_T90CHI                    BIT(10)
  83
  84 #define I2C_KEYBOARD_QUIRKS                     (QUIRK_FIX_NOTEBOOK_REPORT | \
  85                                                  QUIRK_NO_INIT_REPORTS | \
  86                                                  QUIRK_NO_CONSUMER_USAGES)
  87 #define I2C_TOUCHPAD_QUIRKS                     (QUIRK_NO_INIT_REPORTS | \
  88                                                  QUIRK_SKIP_INPUT_MAPPING | \
  89                                                  QUIRK_IS_MULTITOUCH)
  90
  91 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
  92
  93 struct asus_kbd_leds {
  94         struct led_classdev cdev;
  95         struct hid_device *hdev;
  96         struct work_struct work;
  97         unsigned int brightness;
  98         bool removed;
  99 };
 100
 101 struct asus_touchpad_info {
 102         int max_x;
 103         int max_y;
 104         int res_x;
 105         int res_y;
 106         int contact_size;
 107         int max_contacts;
 108 };
 109
 110 struct asus_drvdata {
 111         unsigned long quirks;
 112         struct hid_device *hdev;
 113         struct input_dev *input;
 114         struct asus_kbd_leds *kbd_backlight;
 115         const struct asus_touchpad_info *tp;
 116         bool enable_backlight;
 117         struct power_supply *battery;
 118         struct power_supply_desc battery_desc;
 119         int battery_capacity;
 120         int battery_stat;
 121         bool battery_in_query;
 122         unsigned long battery_next_query;
 123 };
 124
 125 static int asus_report_battery(struct asus_drvdata *, u8 *, int);
 126
 127 static const struct asus_touchpad_info asus_i2c_tp = {
 128         .max_x = 2794,
 129         .max_y = 1758,
 130         .contact_size = 5,
 131         .max_contacts = 5,
 132 };
 133
 134 static const struct asus_touchpad_info asus_t100ta_tp = {
 135         .max_x = 2240,
 136         .max_y = 1120,
 137         .res_x = 30, /* units/mm */
 138         .res_y = 27, /* units/mm */
 139         .contact_size = 5,
 140         .max_contacts = 5,
 141 };
 142
 143 static const struct asus_touchpad_info asus_t100ha_tp = {
 144         .max_x = 2640,
 145         .max_y = 1320,
 146         .res_x = 30, /* units/mm */
 147         .res_y = 29, /* units/mm */
 148         .contact_size = 5,
 149         .max_contacts = 5,
 150 };
 151
 152 static const struct asus_touchpad_info asus_t200ta_tp = {
 153         .max_x = 3120,
 154         .max_y = 1716,
 155         .res_x = 30, /* units/mm */
 156         .res_y = 28, /* units/mm */
 157         .contact_size = 5,
 158         .max_contacts = 5,
 159 };
 160
 161 static const struct asus_touchpad_info asus_t100chi_tp = {
 162         .max_x = 2640,
 163         .max_y = 1320,
 164         .res_x = 31, /* units/mm */
 165         .res_y = 29, /* units/mm */
 166         .contact_size = 3,
 167         .max_contacts = 4,
 168 };
 169
 170 static void asus_report_contact_down(struct asus_drvdata *drvdat,
 171                 int toolType, u8 *data)
 172 {
 173         struct input_dev *input = drvdat->input;
 174         int touch_major, pressure, x, y;
 175
 176         x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 177         y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
 178
 179         input_report_abs(input, ABS_MT_POSITION_X, x);
 180         input_report_abs(input, ABS_MT_POSITION_Y, y);
 181
 182         if (drvdat->tp->contact_size < 5)
 183                 return;
 184
 185         if (toolType == MT_TOOL_PALM) {
 186                 touch_major = MAX_TOUCH_MAJOR;
 187                 pressure = MAX_PRESSURE;
 188         } else {
 189                 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 190                 pressure = data[4] & CONTACT_PRESSURE_MASK;
 191         }
 192
 193         input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 194         input_report_abs(input, ABS_MT_PRESSURE, pressure);
 195 }
 196
 197 /* Required for Synaptics Palm Detection */
 198 static void asus_report_tool_width(struct asus_drvdata *drvdat)
 199 {
 200         struct input_mt *mt = drvdat->input->mt;
 201         struct input_mt_slot *oldest;
 202         int oldid, count, i;
 203
 204         if (drvdat->tp->contact_size < 5)
 205                 return;
 206
 207         oldest = NULL;
 208         oldid = mt->trkid;
 209         count = 0;
 210
 211         for (i = 0; i < mt->num_slots; ++i) {
 212                 struct input_mt_slot *ps = &mt->slots[i];
 213                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
 214
 215                 if (id < 0)
 216                         continue;
 217                 if ((id - oldid) & TRKID_SGN) {
 218                         oldest = ps;
 219                         oldid = id;
 220                 }
 221                 count++;
 222         }
 223
 224         if (oldest) {
 225                 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
 226                         input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 227         }
 228 }
 229
 230 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
 231 {
 232         int i, toolType = MT_TOOL_FINGER;
 233         u8 *contactData = data + 2;
 234
 235         if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
 236                 return 0;
 237
 238         for (i = 0; i < drvdat->tp->max_contacts; i++) {
 239                 bool down = !!(data[1] & BIT(i+3));
 240
 241                 if (drvdat->tp->contact_size >= 5)
 242                         toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 243                                                 MT_TOOL_PALM : MT_TOOL_FINGER;
 244
 245                 input_mt_slot(drvdat->input, i);
 246                 input_mt_report_slot_state(drvdat->input, toolType, down);
 247
 248                 if (down) {
 249                         asus_report_contact_down(drvdat, toolType, contactData);
 250                         contactData += drvdat->tp->contact_size;
 251                 }
 252         }
 253
 254         input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 255         asus_report_tool_width(drvdat);
 256
 257         input_mt_sync_frame(drvdat->input);
 258         input_sync(drvdat->input);
 259
 260         return 1;
 261 }
 262
 263 static int asus_event(struct hid_device *hdev, struct hid_field *field,
 264                       struct hid_usage *usage, __s32 value)
 265 {
 266         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
 267             (usage->hid & HID_USAGE) != 0x00 && !usage->type) {
 268                 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
 269                          usage->hid & HID_USAGE);
 270         }
 271
 272         return 0;
 273 }
 274
 275 static int asus_raw_event(struct hid_device *hdev,
 276                 struct hid_report *report, u8 *data, int size)
 277 {
 278         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 279
 280         if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
 281                 return asus_report_battery(drvdata, data, size);
 282
 283         if (drvdata->tp && data[0] == INPUT_REPORT_ID)
 284                 return asus_report_input(drvdata, data, size);
 285
 286         return 0;
 287 }
 288
 289 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
 290 {
 291         unsigned char *dmabuf;
 292         int ret;
 293
 294         dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
 295         if (!dmabuf)
 296                 return -ENOMEM;
 297
 298         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
 299                                  buf_size, HID_FEATURE_REPORT,
 300                                  HID_REQ_SET_REPORT);
 301         kfree(dmabuf);
 302
 303         return ret;
 304 }
 305
 306 static int asus_kbd_init(struct hid_device *hdev)
 307 {
 308         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
 309                      0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 310         int ret;
 311
 312         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 313         if (ret < 0)
 314                 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
 315
 316         return ret;
 317 }
 318
 319 static int asus_kbd_get_functions(struct hid_device *hdev,
 320                                   unsigned char *kbd_func)
 321 {
 322         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
 323         u8 *readbuf;
 324         int ret;
 325
 326         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 327         if (ret < 0) {
 328                 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
 329                 return ret;
 330         }
 331
 332         readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
 333         if (!readbuf)
 334                 return -ENOMEM;
 335
 336         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
 337                                  FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
 338                                  HID_REQ_GET_REPORT);
 339         if (ret < 0) {
 340                 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
 341                 kfree(readbuf);
 342                 return ret;
 343         }
 344
 345         *kbd_func = readbuf[6];
 346
 347         kfree(readbuf);
 348         return ret;
 349 }
 350
 351 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
 352                                    enum led_brightness brightness)
 353 {
 354         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 355                                                  cdev);
 356         if (led->brightness == brightness)
 357                 return;
 358
 359         led->brightness = brightness;
 360         schedule_work(&led->work);
 361 }
 362
 363 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
 364 {
 365         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 366                                                  cdev);
 367
 368         return led->brightness;
 369 }
 370
 371 static void asus_kbd_backlight_work(struct work_struct *work)
 372 {
 373         struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
 374         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
 375         int ret;
 376
 377         if (led->removed)
 378                 return;
 379
 380         buf[4] = led->brightness;
 381
 382         ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
 383         if (ret < 0)
 384                 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
 385 }
 386
 387 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
 388  * precedence. We only activate HID-based backlight control when the
 389  * WMI control is not available.
 390  */
 391 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
 392 {
 393         u32 value;
 394         int ret;
 395
 396         if (!IS_ENABLED(CONFIG_ASUS_WMI))
 397                 return false;
 398
 399         ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2,
 400                                        ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value);
 401         hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
 402         if (ret)
 403                 return false;
 404
 405         return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
 406 }
 407
 408 static int asus_kbd_register_leds(struct hid_device *hdev)
 409 {
 410         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 411         unsigned char kbd_func;
 412         int ret;
 413
 414         /* Initialize keyboard */
 415         ret = asus_kbd_init(hdev);
 416         if (ret < 0)
 417                 return ret;
 418
 419         /* Get keyboard functions */
 420         ret = asus_kbd_get_functions(hdev, &kbd_func);
 421         if (ret < 0)
 422                 return ret;
 423
 424         /* Check for backlight support */
 425         if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
 426                 return -ENODEV;
 427
 428         drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
 429                                               sizeof(struct asus_kbd_leds),
 430                                               GFP_KERNEL);
 431         if (!drvdata->kbd_backlight)
 432                 return -ENOMEM;
 433
 434         drvdata->kbd_backlight->removed = false;
 435         drvdata->kbd_backlight->brightness = 0;
 436         drvdata->kbd_backlight->hdev = hdev;
 437         drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
 438         drvdata->kbd_backlight->cdev.max_brightness = 3;
 439         drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
 440         drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
 441         INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
 442
 443         ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
 444         if (ret < 0) {
 445                 /* No need to have this still around */
 446                 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
 447         }
 448
 449         return ret;
 450 }
 451
 452 /*
 453  * [0]       REPORT_ID (same value defined in report descriptor)
 454  * [1]       rest battery level. range [0..255]
 455  * [2]..[7]  Bluetooth hardware address (MAC address)
 456  * [8]       charging status
 457  *            = 0 : AC offline / discharging
 458  *            = 1 : AC online  / charging
 459  *            = 2 : AC online  / fully charged
 460  */
 461 static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 462 {
 463         u8 sts;
 464         u8 lvl;
 465         int val;
 466
 467         lvl = data[1];
 468         sts = data[8];
 469
 470         drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
 471
 472         switch (sts) {
 473         case BATTERY_STAT_CHARGING:
 474                 val = POWER_SUPPLY_STATUS_CHARGING;
 475                 break;
 476         case BATTERY_STAT_FULL:
 477                 val = POWER_SUPPLY_STATUS_FULL;
 478                 break;
 479         case BATTERY_STAT_DISCONNECT:
 480         default:
 481                 val = POWER_SUPPLY_STATUS_DISCHARGING;
 482                 break;
 483         }
 484         drvdata->battery_stat = val;
 485
 486         return 0;
 487 }
 488
 489 static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 490 {
 491         /* notify only the autonomous event by device */
 492         if ((drvdata->battery_in_query == false) &&
 493                          (size == BATTERY_REPORT_SIZE))
 494                 power_supply_changed(drvdata->battery);
 495
 496         return 0;
 497 }
 498
 499 static int asus_battery_query(struct asus_drvdata *drvdata)
 500 {
 501         u8 *buf;
 502         int ret = 0;
 503
 504         buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
 505         if (!buf)
 506                 return -ENOMEM;
 507
 508         drvdata->battery_in_query = true;
 509         ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
 510                                 buf, BATTERY_REPORT_SIZE,
 511                                 HID_INPUT_REPORT, HID_REQ_GET_REPORT);
 512         drvdata->battery_in_query = false;
 513         if (ret == BATTERY_REPORT_SIZE)
 514                 ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
 515         else
 516                 ret = -ENODATA;
 517
 518         kfree(buf);
 519
 520         return ret;
 521 }
 522
 523 static enum power_supply_property asus_battery_props[] = {
 524         POWER_SUPPLY_PROP_STATUS,
 525         POWER_SUPPLY_PROP_PRESENT,
 526         POWER_SUPPLY_PROP_CAPACITY,
 527         POWER_SUPPLY_PROP_SCOPE,
 528         POWER_SUPPLY_PROP_MODEL_NAME,
 529 };
 530
 531 #define QUERY_MIN_INTERVAL      (60 * HZ)       /* 60[sec] */
 532
 533 static int asus_battery_get_property(struct power_supply *psy,
 534                                 enum power_supply_property psp,
 535                                 union power_supply_propval *val)
 536 {
 537         struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
 538         int ret = 0;
 539
 540         switch (psp) {
 541         case POWER_SUPPLY_PROP_STATUS:
 542         case POWER_SUPPLY_PROP_CAPACITY:
 543                 if (time_before(drvdata->battery_next_query, jiffies)) {
 544                         drvdata->battery_next_query =
 545                                          jiffies + QUERY_MIN_INTERVAL;
 546                         ret = asus_battery_query(drvdata);
 547                         if (ret)
 548                                 return ret;
 549                 }
 550                 if (psp == POWER_SUPPLY_PROP_STATUS)
 551                         val->intval = drvdata->battery_stat;
 552                 else
 553                         val->intval = drvdata->battery_capacity;
 554                 break;
 555         case POWER_SUPPLY_PROP_PRESENT:
 556                 val->intval = 1;
 557                 break;
 558         case POWER_SUPPLY_PROP_SCOPE:
 559                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 560                 break;
 561         case POWER_SUPPLY_PROP_MODEL_NAME:
 562                 val->strval = drvdata->hdev->name;
 563                 break;
 564         default:
 565                 ret = -EINVAL;
 566                 break;
 567         }
 568
 569         return ret;
 570 }
 571
 572 static int asus_battery_probe(struct hid_device *hdev)
 573 {
 574         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 575         struct power_supply_config pscfg = { .drv_data = drvdata };
 576         int ret = 0;
 577
 578         drvdata->battery_capacity = 0;
 579         drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
 580         drvdata->battery_in_query = false;
 581
 582         drvdata->battery_desc.properties = asus_battery_props;
 583         drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
 584         drvdata->battery_desc.get_property = asus_battery_get_property;
 585         drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 586         drvdata->battery_desc.use_for_apm = 0;
 587         drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 588                                         "asus-keyboard-%s-battery",
 589                                         strlen(hdev->uniq) ?
 590                                         hdev->uniq : dev_name(&hdev->dev));
 591         if (!drvdata->battery_desc.name)
 592                 return -ENOMEM;
 593
 594         drvdata->battery_next_query = jiffies;
 595
 596         drvdata->battery = devm_power_supply_register(&hdev->dev,
 597                                 &(drvdata->battery_desc), &pscfg);
 598         if (IS_ERR(drvdata->battery)) {
 599                 ret = PTR_ERR(drvdata->battery);
 600                 drvdata->battery = NULL;
 601                 hid_err(hdev, "Unable to register battery device\n");
 602                 return ret;
 603         }
 604
 605         power_supply_powers(drvdata->battery, &hdev->dev);
 606
 607         return ret;
 608 }
 609
 610 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 611 {
 612         struct input_dev *input = hi->input;
 613         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 614
 615         /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
 616         if (drvdata->quirks & QUIRK_T100CHI &&
 617             hi->report->id != T100CHI_MOUSE_REPORT_ID)
 618                 return 0;
 619
 620         if (drvdata->tp) {
 621                 int ret;
 622
 623                 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
 624                                      drvdata->tp->max_x, 0, 0);
 625                 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
 626                                      drvdata->tp->max_y, 0, 0);
 627                 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
 628                 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
 629
 630                 if (drvdata->tp->contact_size >= 5) {
 631                         input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
 632                                              MAX_TOUCH_MAJOR, 0, 0);
 633                         input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
 634                                              MAX_TOUCH_MAJOR, 0, 0);
 635                         input_set_abs_params(input, ABS_MT_PRESSURE, 0,
 636                                               MAX_PRESSURE, 0, 0);
 637                 }
 638
 639                 __set_bit(BTN_LEFT, input->keybit);
 640                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 641
 642                 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
 643                                           INPUT_MT_POINTER);
 644
 645                 if (ret) {
 646                         hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 647                         return ret;
 648                 }
 649         }
 650
 651         drvdata->input = input;
 652
 653         if (drvdata->enable_backlight &&
 654             !asus_kbd_wmi_led_control_present(hdev) &&
 655             asus_kbd_register_leds(hdev))
 656                 hid_warn(hdev, "Failed to initialize backlight.\n");
 657
 658         return 0;
 659 }
 660
 661 #define asus_map_key_clear(c)   hid_map_usage_clear(hi, usage, bit, \
 662                                                     max, EV_KEY, (c))
 663 static int asus_input_mapping(struct hid_device *hdev,
 664                 struct hid_input *hi, struct hid_field *field,
 665                 struct hid_usage *usage, unsigned long **bit,
 666                 int *max)
 667 {
 668         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 669
 670         if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 671                 /* Don't map anything from the HID report.
 672                  * We do it all manually in asus_input_configured
 673                  */
 674                 return -1;
 675         }
 676
 677         /*
 678          * Ignore a bunch of bogus collections in the T100CHI descriptor.
 679          * This avoids a bunch of non-functional hid_input devices getting
 680          * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
 681          */
 682         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
 683                 if (field->application == (HID_UP_GENDESK | 0x0080) ||
 684                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
 685                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
 686                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0026))
 687                         return -1;
 688                 /*
 689                  * We use the hid_input for the mouse report for the touchpad,
 690                  * keep the left button, to avoid the core removing it.
 691                  */
 692                 if (field->application == HID_GD_MOUSE &&
 693                     usage->hid != (HID_UP_BUTTON | 1))
 694                         return -1;
 695         }
 696
 697         /* ASUS-specific keyboard hotkeys */
 698         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
 699                 set_bit(EV_REP, hi->input->evbit);
 700                 switch (usage->hid & HID_USAGE) {
 701                 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
 702                 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);                break;
 703                 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);         break;
 704                 case 0x6c: asus_map_key_clear(KEY_SLEEP);               break;
 705                 case 0x7c: asus_map_key_clear(KEY_MICMUTE);             break;
 706                 case 0x82: asus_map_key_clear(KEY_CAMERA);              break;
 707                 case 0x88: asus_map_key_clear(KEY_RFKILL);                      break;
 708                 case 0xb5: asus_map_key_clear(KEY_CALC);                        break;
 709                 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);          break;
 710                 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);                break;
 711
 712                 /* ASUS touchpad toggle */
 713                 case 0x6b: asus_map_key_clear(KEY_F21);                 break;
 714
 715                 /* ROG key */
 716                 case 0x38: asus_map_key_clear(KEY_PROG1);               break;
 717
 718                 /* Fn+C ASUS Splendid */
 719                 case 0xba: asus_map_key_clear(KEY_PROG2);               break;
 720
 721                 /* Fn+Space Power4Gear Hybrid */
 722                 case 0x5c: asus_map_key_clear(KEY_PROG3);               break;
 723
 724                 /* Fn+F5 "fan" symbol on FX503VD */
 725                 case 0x99: asus_map_key_clear(KEY_PROG4);               break;
 726
 727                 default:
 728                         /* ASUS lazily declares 256 usages, ignore the rest,
 729                          * as some make the keyboard appear as a pointer device. */
 730                         return -1;
 731                 }
 732
 733                 /*
 734                  * Check and enable backlight only on devices with UsagePage ==
 735                  * 0xff31 to avoid initializing the keyboard firmware multiple
 736                  * times on devices with multiple HID descriptors but same
 737                  * PID/VID.
 738                  */
 739                 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
 740                         drvdata->enable_backlight = true;
 741
 742                 return 1;
 743         }
 744
 745         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
 746                 set_bit(EV_REP, hi->input->evbit);
 747                 switch (usage->hid & HID_USAGE) {
 748                 case 0xff01: asus_map_key_clear(BTN_1); break;
 749                 case 0xff02: asus_map_key_clear(BTN_2); break;
 750                 case 0xff03: asus_map_key_clear(BTN_3); break;
 751                 case 0xff04: asus_map_key_clear(BTN_4); break;
 752                 case 0xff05: asus_map_key_clear(BTN_5); break;
 753                 case 0xff06: asus_map_key_clear(BTN_6); break;
 754                 case 0xff07: asus_map_key_clear(BTN_7); break;
 755                 case 0xff08: asus_map_key_clear(BTN_8); break;
 756                 case 0xff09: asus_map_key_clear(BTN_9); break;
 757                 case 0xff0a: asus_map_key_clear(BTN_A); break;
 758                 case 0xff0b: asus_map_key_clear(BTN_B); break;
 759                 case 0x00f1: asus_map_key_clear(KEY_WLAN);      break;
 760                 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);    break;
 761                 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);      break;
 762                 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);       break;
 763                 case 0x00f7: asus_map_key_clear(KEY_CAMERA);    break;
 764                 case 0x00f8: asus_map_key_clear(KEY_PROG1);     break;
 765                 default:
 766                         return 0;
 767                 }
 768
 769                 return 1;
 770         }
 771
 772         if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
 773                 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
 774                 switch (usage->hid & HID_USAGE) {
 775                 case 0xe2: /* Mute */
 776                 case 0xe9: /* Volume up */
 777                 case 0xea: /* Volume down */
 778                         return 0;
 779                 default:
 780                         /* Ignore dummy Consumer usages which make the
 781                          * keyboard incorrectly appear as a pointer device.
 782                          */
 783                         return -1;
 784                 }
 785         }
 786
 787         return 0;
 788 }
 789
 790 static int asus_start_multitouch(struct hid_device *hdev)
 791 {
 792         int ret;
 793         static const unsigned char buf[] = {
 794                 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
 795         };
 796         unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 797
 798         if (!dmabuf) {
 799                 ret = -ENOMEM;
 800                 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 801                 return ret;
 802         }
 803
 804         ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
 805                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
 806
 807         kfree(dmabuf);
 808
 809         if (ret != sizeof(buf)) {
 810                 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
 811                 return ret;
 812         }
 813
 814         return 0;
 815 }
 816
 817 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
 818 {
 819         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 820
 821         if (drvdata->tp)
 822                 return asus_start_multitouch(hdev);
 823
 824         return 0;
 825 }
 826
 827 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
 828 {
 829         int ret;
 830         struct asus_drvdata *drvdata;
 831
 832         drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
 833         if (drvdata == NULL) {
 834                 hid_err(hdev, "Can't alloc Asus descriptor\n");
 835                 return -ENOMEM;
 836         }
 837
 838         hid_set_drvdata(hdev, drvdata);
 839
 840         drvdata->quirks = id->driver_data;
 841
 842         /*
 843          * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
 844          * Thus, identify T90CHI dock with product name string.
 845          */
 846         if (strstr(hdev->name, "T90CHI")) {
 847                 drvdata->quirks &= ~QUIRK_T100CHI;
 848                 drvdata->quirks |= QUIRK_T90CHI;
 849         }
 850
 851         if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
 852                 drvdata->tp = &asus_i2c_tp;
 853
 854         if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
 855                 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 856
 857                 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
 858                         drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
 859                         /*
 860                          * The T100HA uses the same USB-ids as the T100TAF and
 861                          * the T200TA uses the same USB-ids as the T100TA, while
 862                          * both have different max x/y values as the T100TA[F].
 863                          */
 864                         if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
 865                                 drvdata->tp = &asus_t100ha_tp;
 866                         else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
 867                                 drvdata->tp = &asus_t200ta_tp;
 868                         else
 869                                 drvdata->tp = &asus_t100ta_tp;
 870                 }
 871         }
 872
 873         if (drvdata->quirks & QUIRK_T100CHI) {
 874                 /*
 875                  * All functionality is on a single HID interface and for
 876                  * userspace the touchpad must be a separate input_dev.
 877                  */
 878                 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
 879                 drvdata->tp = &asus_t100chi_tp;
 880         }
 881
 882         if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
 883                 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
 884
 885         drvdata->hdev = hdev;
 886
 887         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
 888                 ret = asus_battery_probe(hdev);
 889                 if (ret) {
 890                         hid_err(hdev,
 891                             "Asus hid battery_probe failed: %d\n", ret);
 892                         return ret;
 893                 }
 894         }
 895
 896         ret = hid_parse(hdev);
 897         if (ret) {
 898                 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
 899                 return ret;
 900         }
 901
 902         /* use hid-multitouch for T101HA touchpad */
 903         if (id->driver_data & QUIRK_T101HA_DOCK &&
 904             hdev->collection->usage == HID_GD_MOUSE)
 905                 return -ENODEV;
 906
 907         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 908         if (ret) {
 909                 hid_err(hdev, "Asus hw start failed: %d\n", ret);
 910                 return ret;
 911         }
 912
 913         if (!drvdata->input) {
 914                 hid_err(hdev, "Asus input not registered\n");
 915                 ret = -ENOMEM;
 916                 goto err_stop_hw;
 917         }
 918
 919         if (drvdata->tp) {
 920                 drvdata->input->name = "Asus TouchPad";
 921         } else {
 922                 drvdata->input->name = "Asus Keyboard";
 923         }
 924
 925         if (drvdata->tp) {
 926                 ret = asus_start_multitouch(hdev);
 927                 if (ret)
 928                         goto err_stop_hw;
 929         }
 930
 931         return 0;
 932 err_stop_hw:
 933         hid_hw_stop(hdev);
 934         return ret;
 935 }
 936
 937 static void asus_remove(struct hid_device *hdev)
 938 {
 939         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 940
 941         if (drvdata->kbd_backlight) {
 942                 drvdata->kbd_backlight->removed = true;
 943                 cancel_work_sync(&drvdata->kbd_backlight->work);
 944         }
 945
 946         hid_hw_stop(hdev);
 947 }
 948
 949 static const __u8 asus_g752_fixed_rdesc[] = {
 950         0x19, 0x00,                     /*   Usage Minimum (0x00)       */
 951         0x2A, 0xFF, 0x00,               /*   Usage Maximum (0xFF)       */
 952 };
 953
 954 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 955                 unsigned int *rsize)
 956 {
 957         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 958
 959         if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
 960                         *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
 961                 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
 962                 rdesc[55] = 0xdd;
 963         }
 964         /* For the T100TA/T200TA keyboard dock */
 965         if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
 966                  (*rsize == 76 || *rsize == 101) &&
 967                  rdesc[73] == 0x81 && rdesc[74] == 0x01) {
 968                 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
 969                 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
 970         }
 971         /* For the T100CHI/T90CHI keyboard dock */
 972         if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
 973                 int rsize_orig;
 974                 int offs;
 975
 976                 if (drvdata->quirks & QUIRK_T100CHI) {
 977                         rsize_orig = 403;
 978                         offs = 388;
 979                 } else {
 980                         rsize_orig = 306;
 981                         offs = 291;
 982                 }
 983
 984                 /*
 985                  * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
 986                  * (FFh) and clear the flags in the Input() byte.
 987                  * Note the descriptor has a bogus 0 byte at the end so we
 988                  * only need 1 extra byte.
 989                  */
 990                 if (*rsize == rsize_orig &&
 991                         rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
 992                         *rsize = rsize_orig + 1;
 993                         rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
 994                         if (!rdesc)
 995                                 return NULL;
 996
 997                         hid_info(hdev, "Fixing up %s keyb report descriptor\n",
 998                                 drvdata->quirks & QUIRK_T100CHI ?
 999                                 "T100CHI" : "T90CHI");
1000                         memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
1001                         rdesc[offs] = 0x19;
1002                         rdesc[offs + 1] = 0x00;
1003                         rdesc[offs + 2] = 0x29;
1004                         rdesc[offs + 3] = 0xff;
1005                         rdesc[offs + 14] = 0x00;
1006                 }
1007         }
1008
1009         if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1010                  *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1011                 /* report is missing usage mninum and maximum */
1012                 __u8 *new_rdesc;
1013                 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1014
1015                 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
1016                 if (new_rdesc == NULL)
1017                         return rdesc;
1018
1019                 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1020                 /* copy the valid part */
1021                 memcpy(new_rdesc, rdesc, 61);
1022                 /* insert missing part */
1023                 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1024                 /* copy remaining data */
1025                 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1026
1027                 *rsize = new_size;
1028                 rdesc = new_rdesc;
1029         }
1030
1031         return rdesc;
1032 }
1033
1034 static const struct hid_device_id asus_devices[] = {
1035         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1036                 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1037         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1038                 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1039         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1040                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1041         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1042                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1043         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1044                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1045         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1046                 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1047           QUIRK_USE_KBD_BACKLIGHT },
1048         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1049                 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1050           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1051         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1052                 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1053           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1054         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1055                 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD), QUIRK_T101HA_DOCK },
1056         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1057         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1058         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1059         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1060                 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1061
1062         { }
1063 };
1064 MODULE_DEVICE_TABLE(hid, asus_devices);
1065
1066 static struct hid_driver asus_driver = {
1067         .name                   = "asus",
1068         .id_table               = asus_devices,
1069         .report_fixup           = asus_report_fixup,
1070         .probe                  = asus_probe,
1071         .remove                 = asus_remove,
1072         .input_mapping          = asus_input_mapping,
1073         .input_configured       = asus_input_configured,
1074 #ifdef CONFIG_PM
1075         .reset_resume           = asus_reset_resume,
1076 #endif
1077         .event                  = asus_event,
1078         .raw_event              = asus_raw_event
1079 };
1080 module_hid_driver(asus_driver);
1081
1082 MODULE_LICENSE("GPL");