drivers/platform/x86/asus-wmi.c

   1 /*
   2  * Asus PC WMI hotkey driver
   3  *
   4  * Copyright(C) 2010 Intel Corporation.
   5  * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
   6  *
   7  * Portions based on wistron_btns.c:
   8  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
   9  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
  10  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/types.h>
  33 #include <linux/slab.h>
  34 #include <linux/input.h>
  35 #include <linux/input/sparse-keymap.h>
  36 #include <linux/fb.h>
  37 #include <linux/backlight.h>
  38 #include <linux/leds.h>
  39 #include <linux/rfkill.h>
  40 #include <linux/pci.h>
  41 #include <linux/pci_hotplug.h>
  42 #include <linux/hwmon.h>
  43 #include <linux/hwmon-sysfs.h>
  44 #include <linux/debugfs.h>
  45 #include <linux/seq_file.h>
  46 #include <linux/platform_device.h>
  47 #include <linux/thermal.h>
  48 #include <acpi/acpi_bus.h>
  49 #include <acpi/acpi_drivers.h>
  50 #ifdef CONFIG_ACPI_VIDEO
  51 #include <acpi/video.h>
  52 #endif
  53
  54 #include "asus-wmi.h"
  55
  56 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
  57               "Yong Wang <yong.y.wang@intel.com>");
  58 MODULE_DESCRIPTION("Asus Generic WMI Driver");
  59 MODULE_LICENSE("GPL");
  60
  61 #define to_platform_driver(drv)                                 \
  62         (container_of((drv), struct platform_driver, driver))
  63
  64 #define to_asus_wmi_driver(pdrv)                                        \
  65         (container_of((pdrv), struct asus_wmi_driver, platform_driver))
  66
  67 #define ASUS_WMI_MGMT_GUID      "97845ED0-4E6D-11DE-8A39-0800200C9A66"
  68
  69 #define NOTIFY_BRNUP_MIN                0x11
  70 #define NOTIFY_BRNUP_MAX                0x1f
  71 #define NOTIFY_BRNDOWN_MIN              0x20
  72 #define NOTIFY_BRNDOWN_MAX              0x2e
  73 #define NOTIFY_KBD_BRTUP                0xc4
  74 #define NOTIFY_KBD_BRTDWN               0xc5
  75
  76 /* WMI Methods */
  77 #define ASUS_WMI_METHODID_SPEC          0x43455053 /* BIOS SPECification */
  78 #define ASUS_WMI_METHODID_SFBD          0x44424653 /* Set First Boot Device */
  79 #define ASUS_WMI_METHODID_GLCD          0x44434C47 /* Get LCD status */
  80 #define ASUS_WMI_METHODID_GPID          0x44495047 /* Get Panel ID?? (Resol) */
  81 #define ASUS_WMI_METHODID_QMOD          0x444F4D51 /* Quiet MODe */
  82 #define ASUS_WMI_METHODID_SPLV          0x4C425053 /* Set Panel Light Value */
  83 #define ASUS_WMI_METHODID_SFUN          0x4E554653 /* FUNCtionalities */
  84 #define ASUS_WMI_METHODID_SDSP          0x50534453 /* Set DiSPlay output */
  85 #define ASUS_WMI_METHODID_GDSP          0x50534447 /* Get DiSPlay output */
  86 #define ASUS_WMI_METHODID_DEVP          0x50564544 /* DEVice Policy */
  87 #define ASUS_WMI_METHODID_OSVR          0x5256534F /* OS VeRsion */
  88 #define ASUS_WMI_METHODID_DSTS          0x53544344 /* Device STatuS */
  89 #define ASUS_WMI_METHODID_DSTS2         0x53545344 /* Device STatuS #2*/
  90 #define ASUS_WMI_METHODID_BSTS          0x53545342 /* Bios STatuS ? */
  91 #define ASUS_WMI_METHODID_DEVS          0x53564544 /* DEVice Set */
  92 #define ASUS_WMI_METHODID_CFVS          0x53564643 /* CPU Frequency Volt Set */
  93 #define ASUS_WMI_METHODID_KBFT          0x5446424B /* KeyBoard FilTer */
  94 #define ASUS_WMI_METHODID_INIT          0x54494E49 /* INITialize */
  95 #define ASUS_WMI_METHODID_HKEY          0x59454B48 /* Hot KEY ?? */
  96
  97 #define ASUS_WMI_UNSUPPORTED_METHOD     0xFFFFFFFE
  98
  99 /* Wireless */
 100 #define ASUS_WMI_DEVID_HW_SWITCH        0x00010001
 101 #define ASUS_WMI_DEVID_WIRELESS_LED     0x00010002
 102 #define ASUS_WMI_DEVID_CWAP             0x00010003
 103 #define ASUS_WMI_DEVID_WLAN             0x00010011
 104 #define ASUS_WMI_DEVID_WLAN_LED         0x00010012
 105 #define ASUS_WMI_DEVID_BLUETOOTH        0x00010013
 106 #define ASUS_WMI_DEVID_GPS              0x00010015
 107 #define ASUS_WMI_DEVID_WIMAX            0x00010017
 108 #define ASUS_WMI_DEVID_WWAN3G           0x00010019
 109 #define ASUS_WMI_DEVID_UWB              0x00010021
 110
 111 /* Leds */
 112 /* 0x000200XX and 0x000400XX */
 113 #define ASUS_WMI_DEVID_LED1             0x00020011
 114 #define ASUS_WMI_DEVID_LED2             0x00020012
 115 #define ASUS_WMI_DEVID_LED3             0x00020013
 116 #define ASUS_WMI_DEVID_LED4             0x00020014
 117 #define ASUS_WMI_DEVID_LED5             0x00020015
 118 #define ASUS_WMI_DEVID_LED6             0x00020016
 119
 120 /* Backlight and Brightness */
 121 #define ASUS_WMI_DEVID_BACKLIGHT        0x00050011
 122 #define ASUS_WMI_DEVID_BRIGHTNESS       0x00050012
 123 #define ASUS_WMI_DEVID_KBD_BACKLIGHT    0x00050021
 124 #define ASUS_WMI_DEVID_LIGHT_SENSOR     0x00050022 /* ?? */
 125
 126 /* Misc */
 127 #define ASUS_WMI_DEVID_CAMERA           0x00060013
 128
 129 /* Storage */
 130 #define ASUS_WMI_DEVID_CARDREADER       0x00080013
 131
 132 /* Input */
 133 #define ASUS_WMI_DEVID_TOUCHPAD         0x00100011
 134 #define ASUS_WMI_DEVID_TOUCHPAD_LED     0x00100012
 135
 136 /* Fan, Thermal */
 137 #define ASUS_WMI_DEVID_THERMAL_CTRL     0x00110011
 138 #define ASUS_WMI_DEVID_FAN_CTRL         0x00110012
 139
 140 /* Power */
 141 #define ASUS_WMI_DEVID_PROCESSOR_STATE  0x00120012
 142
 143 /* Deep S3 / Resume on LID open */
 144 #define ASUS_WMI_DEVID_LID_RESUME       0x00120031
 145
 146 /* DSTS masks */
 147 #define ASUS_WMI_DSTS_STATUS_BIT        0x00000001
 148 #define ASUS_WMI_DSTS_UNKNOWN_BIT       0x00000002
 149 #define ASUS_WMI_DSTS_PRESENCE_BIT      0x00010000
 150 #define ASUS_WMI_DSTS_USER_BIT          0x00020000
 151 #define ASUS_WMI_DSTS_BIOS_BIT          0x00040000
 152 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK   0x000000FF
 153 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK   0x0000FF00
 154
 155 struct bios_args {
 156         u32 arg0;
 157         u32 arg1;
 158 } __packed;
 159
 160 /*
 161  * <platform>/    - debugfs root directory
 162  *   dev_id      - current dev_id
 163  *   ctrl_param  - current ctrl_param
 164  *   method_id   - current method_id
 165  *   devs        - call DEVS(dev_id, ctrl_param) and print result
 166  *   dsts        - call DSTS(dev_id)  and print result
 167  *   call        - call method_id(dev_id, ctrl_param) and print result
 168  */
 169 struct asus_wmi_debug {
 170         struct dentry *root;
 171         u32 method_id;
 172         u32 dev_id;
 173         u32 ctrl_param;
 174 };
 175
 176 struct asus_rfkill {
 177         struct asus_wmi *asus;
 178         struct rfkill *rfkill;
 179         u32 dev_id;
 180 };
 181
 182 struct asus_wmi {
 183         int dsts_id;
 184         int spec;
 185         int sfun;
 186
 187         struct input_dev *inputdev;
 188         struct backlight_device *backlight_device;
 189         struct device *hwmon_device;
 190         struct platform_device *platform_device;
 191
 192         struct led_classdev tpd_led;
 193         int tpd_led_wk;
 194         struct led_classdev kbd_led;
 195         int kbd_led_wk;
 196         struct workqueue_struct *led_workqueue;
 197         struct work_struct tpd_led_work;
 198         struct work_struct kbd_led_work;
 199
 200         struct asus_rfkill wlan;
 201         struct asus_rfkill bluetooth;
 202         struct asus_rfkill wimax;
 203         struct asus_rfkill wwan3g;
 204         struct asus_rfkill gps;
 205         struct asus_rfkill uwb;
 206
 207         struct hotplug_slot *hotplug_slot;
 208         struct mutex hotplug_lock;
 209         struct mutex wmi_lock;
 210         struct workqueue_struct *hotplug_workqueue;
 211         struct work_struct hotplug_work;
 212
 213         struct asus_wmi_debug debug;
 214
 215         struct asus_wmi_driver *driver;
 216 };
 217
 218 static int asus_wmi_input_init(struct asus_wmi *asus)
 219 {
 220         int err;
 221
 222         asus->inputdev = input_allocate_device();
 223         if (!asus->inputdev)
 224                 return -ENOMEM;
 225
 226         asus->inputdev->name = asus->driver->input_name;
 227         asus->inputdev->phys = asus->driver->input_phys;
 228         asus->inputdev->id.bustype = BUS_HOST;
 229         asus->inputdev->dev.parent = &asus->platform_device->dev;
 230         set_bit(EV_REP, asus->inputdev->evbit);
 231
 232         err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
 233         if (err)
 234                 goto err_free_dev;
 235
 236         err = input_register_device(asus->inputdev);
 237         if (err)
 238                 goto err_free_keymap;
 239
 240         return 0;
 241
 242 err_free_keymap:
 243         sparse_keymap_free(asus->inputdev);
 244 err_free_dev:
 245         input_free_device(asus->inputdev);
 246         return err;
 247 }
 248
 249 static void asus_wmi_input_exit(struct asus_wmi *asus)
 250 {
 251         if (asus->inputdev) {
 252                 sparse_keymap_free(asus->inputdev);
 253                 input_unregister_device(asus->inputdev);
 254         }
 255
 256         asus->inputdev = NULL;
 257 }
 258
 259 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
 260                                     u32 *retval)
 261 {
 262         struct bios_args args = {
 263                 .arg0 = arg0,
 264                 .arg1 = arg1,
 265         };
 266         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
 267         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 268         acpi_status status;
 269         union acpi_object *obj;
 270         u32 tmp;
 271
 272         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
 273                                      &input, &output);
 274
 275         if (ACPI_FAILURE(status))
 276                 goto exit;
 277
 278         obj = (union acpi_object *)output.pointer;
 279         if (obj && obj->type == ACPI_TYPE_INTEGER)
 280                 tmp = (u32) obj->integer.value;
 281         else
 282                 tmp = 0;
 283
 284         if (retval)
 285                 *retval = tmp;
 286
 287         kfree(obj);
 288
 289 exit:
 290         if (ACPI_FAILURE(status))
 291                 return -EIO;
 292
 293         if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
 294                 return -ENODEV;
 295
 296         return 0;
 297 }
 298
 299 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
 300 {
 301         return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
 302 }
 303
 304 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
 305                                  u32 *retval)
 306 {
 307         return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
 308                                         ctrl_param, retval);
 309 }
 310
 311 /* Helper for special devices with magic return codes */
 312 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
 313                                       u32 dev_id, u32 mask)
 314 {
 315         u32 retval = 0;
 316         int err;
 317
 318         err = asus_wmi_get_devstate(asus, dev_id, &retval);
 319
 320         if (err < 0)
 321                 return err;
 322
 323         if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
 324                 return -ENODEV;
 325
 326         if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
 327                 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
 328                         return -ENODEV;
 329         }
 330
 331         return retval & mask;
 332 }
 333
 334 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
 335 {
 336         return asus_wmi_get_devstate_bits(asus, dev_id,
 337                                           ASUS_WMI_DSTS_STATUS_BIT);
 338 }
 339
 340 /*
 341  * LEDs
 342  */
 343 /*
 344  * These functions actually update the LED's, and are called from a
 345  * workqueue. By doing this as separate work rather than when the LED
 346  * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 347  * potentially bad time, such as a timer interrupt.
 348  */
 349 static void tpd_led_update(struct work_struct *work)
 350 {
 351         int ctrl_param;
 352         struct asus_wmi *asus;
 353
 354         asus = container_of(work, struct asus_wmi, tpd_led_work);
 355
 356         ctrl_param = asus->tpd_led_wk;
 357         asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
 358 }
 359
 360 static void tpd_led_set(struct led_classdev *led_cdev,
 361                         enum led_brightness value)
 362 {
 363         struct asus_wmi *asus;
 364
 365         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 366
 367         asus->tpd_led_wk = !!value;
 368         queue_work(asus->led_workqueue, &asus->tpd_led_work);
 369 }
 370
 371 static int read_tpd_led_state(struct asus_wmi *asus)
 372 {
 373         return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
 374 }
 375
 376 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
 377 {
 378         struct asus_wmi *asus;
 379
 380         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 381
 382         return read_tpd_led_state(asus);
 383 }
 384
 385 static void kbd_led_update(struct work_struct *work)
 386 {
 387         int ctrl_param = 0;
 388         struct asus_wmi *asus;
 389
 390         asus = container_of(work, struct asus_wmi, kbd_led_work);
 391
 392         /*
 393          * bits 0-2: level
 394          * bit 7: light on/off
 395          */
 396         if (asus->kbd_led_wk > 0)
 397                 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
 398
 399         asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
 400 }
 401
 402 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
 403 {
 404         int retval;
 405
 406         /*
 407          * bits 0-2: level
 408          * bit 7: light on/off
 409          * bit 8-10: environment (0: dark, 1: normal, 2: light)
 410          * bit 17: status unknown
 411          */
 412         retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
 413                                             0xFFFF);
 414
 415         /* Unknown status is considered as off */
 416         if (retval == 0x8000)
 417                 retval = 0;
 418
 419         if (retval >= 0) {
 420                 if (level)
 421                         *level = retval & 0x7F;
 422                 if (env)
 423                         *env = (retval >> 8) & 0x7F;
 424                 retval = 0;
 425         }
 426
 427         return retval;
 428 }
 429
 430 static void kbd_led_set(struct led_classdev *led_cdev,
 431                         enum led_brightness value)
 432 {
 433         struct asus_wmi *asus;
 434
 435         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 436
 437         if (value > asus->kbd_led.max_brightness)
 438                 value = asus->kbd_led.max_brightness;
 439         else if (value < 0)
 440                 value = 0;
 441
 442         asus->kbd_led_wk = value;
 443         queue_work(asus->led_workqueue, &asus->kbd_led_work);
 444 }
 445
 446 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 447 {
 448         struct asus_wmi *asus;
 449         int retval, value;
 450
 451         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 452
 453         retval = kbd_led_read(asus, &value, NULL);
 454
 455         if (retval < 0)
 456                 return retval;
 457
 458         return value;
 459 }
 460
 461 static void asus_wmi_led_exit(struct asus_wmi *asus)
 462 {
 463         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
 464                 led_classdev_unregister(&asus->kbd_led);
 465         if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
 466                 led_classdev_unregister(&asus->tpd_led);
 467         if (asus->led_workqueue)
 468                 destroy_workqueue(asus->led_workqueue);
 469 }
 470
 471 static int asus_wmi_led_init(struct asus_wmi *asus)
 472 {
 473         int rv = 0;
 474
 475         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 476         if (!asus->led_workqueue)
 477                 return -ENOMEM;
 478
 479         if (read_tpd_led_state(asus) >= 0) {
 480                 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
 481
 482                 asus->tpd_led.name = "asus::touchpad";
 483                 asus->tpd_led.brightness_set = tpd_led_set;
 484                 asus->tpd_led.brightness_get = tpd_led_get;
 485                 asus->tpd_led.max_brightness = 1;
 486
 487                 rv = led_classdev_register(&asus->platform_device->dev,
 488                                            &asus->tpd_led);
 489                 if (rv)
 490                         goto error;
 491         }
 492
 493         if (kbd_led_read(asus, NULL, NULL) >= 0) {
 494                 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
 495
 496                 asus->kbd_led.name = "asus::kbd_backlight";
 497                 asus->kbd_led.brightness_set = kbd_led_set;
 498                 asus->kbd_led.brightness_get = kbd_led_get;
 499                 asus->kbd_led.max_brightness = 3;
 500
 501                 rv = led_classdev_register(&asus->platform_device->dev,
 502                                            &asus->kbd_led);
 503         }
 504
 505 error:
 506         if (rv)
 507                 asus_wmi_led_exit(asus);
 508
 509         return rv;
 510 }
 511
 512
 513 /*
 514  * PCI hotplug (for wlan rfkill)
 515  */
 516 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
 517 {
 518         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 519
 520         if (result < 0)
 521                 return false;
 522         return !result;
 523 }
 524
 525 static void asus_rfkill_hotplug(struct asus_wmi *asus)
 526 {
 527         struct pci_dev *dev;
 528         struct pci_bus *bus;
 529         bool blocked;
 530         bool absent;
 531         u32 l;
 532
 533         mutex_lock(&asus->wmi_lock);
 534         blocked = asus_wlan_rfkill_blocked(asus);
 535         mutex_unlock(&asus->wmi_lock);
 536
 537         mutex_lock(&asus->hotplug_lock);
 538
 539         if (asus->wlan.rfkill)
 540                 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
 541
 542         if (asus->hotplug_slot) {
 543                 bus = pci_find_bus(0, 1);
 544                 if (!bus) {
 545                         pr_warn("Unable to find PCI bus 1?\n");
 546                         goto out_unlock;
 547                 }
 548
 549                 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
 550                         pr_err("Unable to read PCI config space?\n");
 551                         goto out_unlock;
 552                 }
 553                 absent = (l == 0xffffffff);
 554
 555                 if (blocked != absent) {
 556                         pr_warn("BIOS says wireless lan is %s, "
 557                                 "but the pci device is %s\n",
 558                                 blocked ? "blocked" : "unblocked",
 559                                 absent ? "absent" : "present");
 560                         pr_warn("skipped wireless hotplug as probably "
 561                                 "inappropriate for this model\n");
 562                         goto out_unlock;
 563                 }
 564
 565                 if (!blocked) {
 566                         dev = pci_get_slot(bus, 0);
 567                         if (dev) {
 568                                 /* Device already present */
 569                                 pci_dev_put(dev);
 570                                 goto out_unlock;
 571                         }
 572                         dev = pci_scan_single_device(bus, 0);
 573                         if (dev) {
 574                                 pci_bus_assign_resources(bus);
 575                                 if (pci_bus_add_device(dev))
 576                                         pr_err("Unable to hotplug wifi\n");
 577                         }
 578                 } else {
 579                         dev = pci_get_slot(bus, 0);
 580                         if (dev) {
 581                                 pci_stop_and_remove_bus_device(dev);
 582                                 pci_dev_put(dev);
 583                         }
 584                 }
 585         }
 586
 587 out_unlock:
 588         mutex_unlock(&asus->hotplug_lock);
 589 }
 590
 591 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
 592 {
 593         struct asus_wmi *asus = data;
 594
 595         if (event != ACPI_NOTIFY_BUS_CHECK)
 596                 return;
 597
 598         /*
 599          * We can't call directly asus_rfkill_hotplug because most
 600          * of the time WMBC is still being executed and not reetrant.
 601          * There is currently no way to tell ACPICA that  we want this
 602          * method to be serialized, we schedule a asus_rfkill_hotplug
 603          * call later, in a safer context.
 604          */
 605         queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
 606 }
 607
 608 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
 609 {
 610         acpi_status status;
 611         acpi_handle handle;
 612
 613         status = acpi_get_handle(NULL, node, &handle);
 614
 615         if (ACPI_SUCCESS(status)) {
 616                 status = acpi_install_notify_handler(handle,
 617                                                      ACPI_SYSTEM_NOTIFY,
 618                                                      asus_rfkill_notify, asus);
 619                 if (ACPI_FAILURE(status))
 620                         pr_warn("Failed to register notify on %s\n", node);
 621         } else
 622                 return -ENODEV;
 623
 624         return 0;
 625 }
 626
 627 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
 628 {
 629         acpi_status status = AE_OK;
 630         acpi_handle handle;
 631
 632         status = acpi_get_handle(NULL, node, &handle);
 633
 634         if (ACPI_SUCCESS(status)) {
 635                 status = acpi_remove_notify_handler(handle,
 636                                                     ACPI_SYSTEM_NOTIFY,
 637                                                     asus_rfkill_notify);
 638                 if (ACPI_FAILURE(status))
 639                         pr_err("Error removing rfkill notify handler %s\n",
 640                                node);
 641         }
 642 }
 643
 644 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
 645                                    u8 *value)
 646 {
 647         struct asus_wmi *asus = hotplug_slot->private;
 648         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 649
 650         if (result < 0)
 651                 return result;
 652
 653         *value = !!result;
 654         return 0;
 655 }
 656
 657 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
 658 {
 659         kfree(hotplug_slot->info);
 660         kfree(hotplug_slot);
 661 }
 662
 663 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
 664         .owner = THIS_MODULE,
 665         .get_adapter_status = asus_get_adapter_status,
 666         .get_power_status = asus_get_adapter_status,
 667 };
 668
 669 static void asus_hotplug_work(struct work_struct *work)
 670 {
 671         struct asus_wmi *asus;
 672
 673         asus = container_of(work, struct asus_wmi, hotplug_work);
 674         asus_rfkill_hotplug(asus);
 675 }
 676
 677 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
 678 {
 679         int ret = -ENOMEM;
 680         struct pci_bus *bus = pci_find_bus(0, 1);
 681
 682         if (!bus) {
 683                 pr_err("Unable to find wifi PCI bus\n");
 684                 return -ENODEV;
 685         }
 686
 687         asus->hotplug_workqueue =
 688             create_singlethread_workqueue("hotplug_workqueue");
 689         if (!asus->hotplug_workqueue)
 690                 goto error_workqueue;
 691
 692         INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
 693
 694         asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 695         if (!asus->hotplug_slot)
 696                 goto error_slot;
 697
 698         asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
 699                                            GFP_KERNEL);
 700         if (!asus->hotplug_slot->info)
 701                 goto error_info;
 702
 703         asus->hotplug_slot->private = asus;
 704         asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
 705         asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
 706         asus_get_adapter_status(asus->hotplug_slot,
 707                                 &asus->hotplug_slot->info->adapter_status);
 708
 709         ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
 710         if (ret) {
 711                 pr_err("Unable to register hotplug slot - %d\n", ret);
 712                 goto error_register;
 713         }
 714
 715         return 0;
 716
 717 error_register:
 718         kfree(asus->hotplug_slot->info);
 719 error_info:
 720         kfree(asus->hotplug_slot);
 721         asus->hotplug_slot = NULL;
 722 error_slot:
 723         destroy_workqueue(asus->hotplug_workqueue);
 724 error_workqueue:
 725         return ret;
 726 }
 727
 728 /*
 729  * Rfkill devices
 730  */
 731 static int asus_rfkill_set(void *data, bool blocked)
 732 {
 733         struct asus_rfkill *priv = data;
 734         u32 ctrl_param = !blocked;
 735         u32 dev_id = priv->dev_id;
 736
 737         /*
 738          * If the user bit is set, BIOS can't set and record the wlan status,
 739          * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
 740          * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
 741          * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
 742          * while setting the wlan status through WMI.
 743          * This is also the behavior that windows app will do.
 744          */
 745         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 746              priv->asus->driver->wlan_ctrl_by_user)
 747                 dev_id = ASUS_WMI_DEVID_WLAN_LED;
 748
 749         return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
 750 }
 751
 752 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
 753 {
 754         struct asus_rfkill *priv = data;
 755         int result;
 756
 757         result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
 758
 759         if (result < 0)
 760                 return;
 761
 762         rfkill_set_sw_state(priv->rfkill, !result);
 763 }
 764
 765 static int asus_rfkill_wlan_set(void *data, bool blocked)
 766 {
 767         struct asus_rfkill *priv = data;
 768         struct asus_wmi *asus = priv->asus;
 769         int ret;
 770
 771         /*
 772          * This handler is enabled only if hotplug is enabled.
 773          * In this case, the asus_wmi_set_devstate() will
 774          * trigger a wmi notification and we need to wait
 775          * this call to finish before being able to call
 776          * any wmi method
 777          */
 778         mutex_lock(&asus->wmi_lock);
 779         ret = asus_rfkill_set(data, blocked);
 780         mutex_unlock(&asus->wmi_lock);
 781         return ret;
 782 }
 783
 784 static const struct rfkill_ops asus_rfkill_wlan_ops = {
 785         .set_block = asus_rfkill_wlan_set,
 786         .query = asus_rfkill_query,
 787 };
 788
 789 static const struct rfkill_ops asus_rfkill_ops = {
 790         .set_block = asus_rfkill_set,
 791         .query = asus_rfkill_query,
 792 };
 793
 794 static int asus_new_rfkill(struct asus_wmi *asus,
 795                            struct asus_rfkill *arfkill,
 796                            const char *name, enum rfkill_type type, int dev_id)
 797 {
 798         int result = asus_wmi_get_devstate_simple(asus, dev_id);
 799         struct rfkill **rfkill = &arfkill->rfkill;
 800
 801         if (result < 0)
 802                 return result;
 803
 804         arfkill->dev_id = dev_id;
 805         arfkill->asus = asus;
 806
 807         if (dev_id == ASUS_WMI_DEVID_WLAN &&
 808             asus->driver->quirks->hotplug_wireless)
 809                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 810                                        &asus_rfkill_wlan_ops, arfkill);
 811         else
 812                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 813                                        &asus_rfkill_ops, arfkill);
 814
 815         if (!*rfkill)
 816                 return -EINVAL;
 817
 818         rfkill_init_sw_state(*rfkill, !result);
 819         result = rfkill_register(*rfkill);
 820         if (result) {
 821                 rfkill_destroy(*rfkill);
 822                 *rfkill = NULL;
 823                 return result;
 824         }
 825         return 0;
 826 }
 827
 828 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
 829 {
 830         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
 831         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
 832         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
 833         if (asus->wlan.rfkill) {
 834                 rfkill_unregister(asus->wlan.rfkill);
 835                 rfkill_destroy(asus->wlan.rfkill);
 836                 asus->wlan.rfkill = NULL;
 837         }
 838         /*
 839          * Refresh pci hotplug in case the rfkill state was changed after
 840          * asus_unregister_rfkill_notifier()
 841          */
 842         asus_rfkill_hotplug(asus);
 843         if (asus->hotplug_slot)
 844                 pci_hp_deregister(asus->hotplug_slot);
 845         if (asus->hotplug_workqueue)
 846                 destroy_workqueue(asus->hotplug_workqueue);
 847
 848         if (asus->bluetooth.rfkill) {
 849                 rfkill_unregister(asus->bluetooth.rfkill);
 850                 rfkill_destroy(asus->bluetooth.rfkill);
 851                 asus->bluetooth.rfkill = NULL;
 852         }
 853         if (asus->wimax.rfkill) {
 854                 rfkill_unregister(asus->wimax.rfkill);
 855                 rfkill_destroy(asus->wimax.rfkill);
 856                 asus->wimax.rfkill = NULL;
 857         }
 858         if (asus->wwan3g.rfkill) {
 859                 rfkill_unregister(asus->wwan3g.rfkill);
 860                 rfkill_destroy(asus->wwan3g.rfkill);
 861                 asus->wwan3g.rfkill = NULL;
 862         }
 863         if (asus->gps.rfkill) {
 864                 rfkill_unregister(asus->gps.rfkill);
 865                 rfkill_destroy(asus->gps.rfkill);
 866                 asus->gps.rfkill = NULL;
 867         }
 868         if (asus->uwb.rfkill) {
 869                 rfkill_unregister(asus->uwb.rfkill);
 870                 rfkill_destroy(asus->uwb.rfkill);
 871                 asus->uwb.rfkill = NULL;
 872         }
 873 }
 874
 875 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
 876 {
 877         int result = 0;
 878
 879         mutex_init(&asus->hotplug_lock);
 880         mutex_init(&asus->wmi_lock);
 881
 882         result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
 883                                  RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
 884
 885         if (result && result != -ENODEV)
 886                 goto exit;
 887
 888         result = asus_new_rfkill(asus, &asus->bluetooth,
 889                                  "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
 890                                  ASUS_WMI_DEVID_BLUETOOTH);
 891
 892         if (result && result != -ENODEV)
 893                 goto exit;
 894
 895         result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
 896                                  RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
 897
 898         if (result && result != -ENODEV)
 899                 goto exit;
 900
 901         result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
 902                                  RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
 903
 904         if (result && result != -ENODEV)
 905                 goto exit;
 906
 907         result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
 908                                  RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
 909
 910         if (result && result != -ENODEV)
 911                 goto exit;
 912
 913         result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
 914                                  RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
 915
 916         if (result && result != -ENODEV)
 917                 goto exit;
 918
 919         if (!asus->driver->quirks->hotplug_wireless)
 920                 goto exit;
 921
 922         result = asus_setup_pci_hotplug(asus);
 923         /*
 924          * If we get -EBUSY then something else is handling the PCI hotplug -
 925          * don't fail in this case
 926          */
 927         if (result == -EBUSY)
 928                 result = 0;
 929
 930         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
 931         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
 932         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
 933         /*
 934          * Refresh pci hotplug in case the rfkill state was changed during
 935          * setup.
 936          */
 937         asus_rfkill_hotplug(asus);
 938
 939 exit:
 940         if (result && result != -ENODEV)
 941                 asus_wmi_rfkill_exit(asus);
 942
 943         if (result == -ENODEV)
 944                 result = 0;
 945
 946         return result;
 947 }
 948
 949 /*
 950  * Hwmon device
 951  */
 952 static ssize_t asus_hwmon_pwm1(struct device *dev,
 953                                struct device_attribute *attr,
 954                                char *buf)
 955 {
 956         struct asus_wmi *asus = dev_get_drvdata(dev);
 957         u32 value;
 958         int err;
 959
 960         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
 961
 962         if (err < 0)
 963                 return err;
 964
 965         value &= 0xFF;
 966
 967         if (value == 1) /* Low Speed */
 968                 value = 85;
 969         else if (value == 2)
 970                 value = 170;
 971         else if (value == 3)
 972                 value = 255;
 973         else if (value != 0) {
 974                 pr_err("Unknown fan speed %#x", value);
 975                 value = -1;
 976         }
 977
 978         return sprintf(buf, "%d\n", value);
 979 }
 980
 981 static ssize_t asus_hwmon_temp1(struct device *dev,
 982                                 struct device_attribute *attr,
 983                                 char *buf)
 984 {
 985         struct asus_wmi *asus = dev_get_drvdata(dev);
 986         u32 value;
 987         int err;
 988
 989         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
 990
 991         if (err < 0)
 992                 return err;
 993
 994         value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
 995
 996         return sprintf(buf, "%d\n", value);
 997 }
 998
 999 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
1000 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
1001
1002 static ssize_t
1003 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1004 {
1005         return sprintf(buf, "asus\n");
1006 }
1007 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1008
1009 static struct attribute *hwmon_attributes[] = {
1010         &sensor_dev_attr_pwm1.dev_attr.attr,
1011         &sensor_dev_attr_temp1_input.dev_attr.attr,
1012         &sensor_dev_attr_name.dev_attr.attr,
1013         NULL
1014 };
1015
1016 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1017                                           struct attribute *attr, int idx)
1018 {
1019         struct device *dev = container_of(kobj, struct device, kobj);
1020         struct platform_device *pdev = to_platform_device(dev->parent);
1021         struct asus_wmi *asus = platform_get_drvdata(pdev);
1022         bool ok = true;
1023         int dev_id = -1;
1024         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1025
1026         if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1027                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1028         else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1029                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1030
1031         if (dev_id != -1) {
1032                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1033
1034                 if (err < 0)
1035                         return 0; /* can't return negative here */
1036         }
1037
1038         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1039                 /*
1040                  * We need to find a better way, probably using sfun,
1041                  * bits or spec ...
1042                  * Currently we disable it if:
1043                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1044                  * - reverved bits are non-zero
1045                  * - sfun and presence bit are not set
1046                  */
1047                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1048                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1049                         ok = false;
1050         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1051                 /* If value is zero, something is clearly wrong */
1052                 if (value == 0)
1053                         ok = false;
1054         }
1055
1056         return ok ? attr->mode : 0;
1057 }
1058
1059 static struct attribute_group hwmon_attribute_group = {
1060         .is_visible = asus_hwmon_sysfs_is_visible,
1061         .attrs = hwmon_attributes
1062 };
1063
1064 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1065 {
1066         struct device *hwmon;
1067
1068         hwmon = asus->hwmon_device;
1069         if (!hwmon)
1070                 return;
1071         sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1072         hwmon_device_unregister(hwmon);
1073         asus->hwmon_device = NULL;
1074 }
1075
1076 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1077 {
1078         struct device *hwmon;
1079         int result;
1080
1081         hwmon = hwmon_device_register(&asus->platform_device->dev);
1082         if (IS_ERR(hwmon)) {
1083                 pr_err("Could not register asus hwmon device\n");
1084                 return PTR_ERR(hwmon);
1085         }
1086         dev_set_drvdata(hwmon, asus);
1087         asus->hwmon_device = hwmon;
1088         result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1089         if (result)
1090                 asus_wmi_hwmon_exit(asus);
1091         return result;
1092 }
1093
1094 /*
1095  * Backlight
1096  */
1097 static int read_backlight_power(struct asus_wmi *asus)
1098 {
1099         int ret;
1100         if (asus->driver->quirks->store_backlight_power)
1101                 ret = !asus->driver->panel_power;
1102         else
1103                 ret = asus_wmi_get_devstate_simple(asus,
1104                                                    ASUS_WMI_DEVID_BACKLIGHT);
1105
1106         if (ret < 0)
1107                 return ret;
1108
1109         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1110 }
1111
1112 static int read_brightness_max(struct asus_wmi *asus)
1113 {
1114         u32 retval;
1115         int err;
1116
1117         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1118
1119         if (err < 0)
1120                 return err;
1121
1122         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1123         retval >>= 8;
1124
1125         if (!retval)
1126                 return -ENODEV;
1127
1128         return retval;
1129 }
1130
1131 static int read_brightness(struct backlight_device *bd)
1132 {
1133         struct asus_wmi *asus = bl_get_data(bd);
1134         u32 retval;
1135         int err;
1136
1137         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1138
1139         if (err < 0)
1140                 return err;
1141
1142         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1143 }
1144
1145 static u32 get_scalar_command(struct backlight_device *bd)
1146 {
1147         struct asus_wmi *asus = bl_get_data(bd);
1148         u32 ctrl_param = 0;
1149
1150         if ((asus->driver->brightness < bd->props.brightness) ||
1151             bd->props.brightness == bd->props.max_brightness)
1152                 ctrl_param = 0x00008001;
1153         else if ((asus->driver->brightness > bd->props.brightness) ||
1154                  bd->props.brightness == 0)
1155                 ctrl_param = 0x00008000;
1156
1157         asus->driver->brightness = bd->props.brightness;
1158
1159         return ctrl_param;
1160 }
1161
1162 static int update_bl_status(struct backlight_device *bd)
1163 {
1164         struct asus_wmi *asus = bl_get_data(bd);
1165         u32 ctrl_param;
1166         int power, err = 0;
1167
1168         power = read_backlight_power(asus);
1169         if (power != -ENODEV && bd->props.power != power) {
1170                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1171                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1172                                             ctrl_param, NULL);
1173                 if (asus->driver->quirks->store_backlight_power)
1174                         asus->driver->panel_power = bd->props.power;
1175
1176                 /* When using scalar brightness, updating the brightness
1177                  * will mess with the backlight power */
1178                 if (asus->driver->quirks->scalar_panel_brightness)
1179                         return err;
1180         }
1181
1182         if (asus->driver->quirks->scalar_panel_brightness)
1183                 ctrl_param = get_scalar_command(bd);
1184         else
1185                 ctrl_param = bd->props.brightness;
1186
1187         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1188                                     ctrl_param, NULL);
1189
1190         return err;
1191 }
1192
1193 static const struct backlight_ops asus_wmi_bl_ops = {
1194         .get_brightness = read_brightness,
1195         .update_status = update_bl_status,
1196 };
1197
1198 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1199 {
1200         struct backlight_device *bd = asus->backlight_device;
1201         int old = bd->props.brightness;
1202         int new = old;
1203
1204         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1205                 new = code - NOTIFY_BRNUP_MIN + 1;
1206         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1207                 new = code - NOTIFY_BRNDOWN_MIN;
1208
1209         bd->props.brightness = new;
1210         backlight_update_status(bd);
1211         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1212
1213         return old;
1214 }
1215
1216 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1217 {
1218         struct backlight_device *bd;
1219         struct backlight_properties props;
1220         int max;
1221         int power;
1222
1223         max = read_brightness_max(asus);
1224
1225         if (max == -ENODEV)
1226                 max = 0;
1227         else if (max < 0)
1228                 return max;
1229
1230         power = read_backlight_power(asus);
1231
1232         if (power == -ENODEV)
1233                 power = FB_BLANK_UNBLANK;
1234         else if (power < 0)
1235                 return power;
1236
1237         memset(&props, 0, sizeof(struct backlight_properties));
1238         props.type = BACKLIGHT_PLATFORM;
1239         props.max_brightness = max;
1240         bd = backlight_device_register(asus->driver->name,
1241                                        &asus->platform_device->dev, asus,
1242                                        &asus_wmi_bl_ops, &props);
1243         if (IS_ERR(bd)) {
1244                 pr_err("Could not register backlight device\n");
1245                 return PTR_ERR(bd);
1246         }
1247
1248         asus->backlight_device = bd;
1249
1250         if (asus->driver->quirks->store_backlight_power)
1251                 asus->driver->panel_power = power;
1252
1253         bd->props.brightness = read_brightness(bd);
1254         bd->props.power = power;
1255         backlight_update_status(bd);
1256
1257         asus->driver->brightness = bd->props.brightness;
1258
1259         return 0;
1260 }
1261
1262 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1263 {
1264         if (asus->backlight_device)
1265                 backlight_device_unregister(asus->backlight_device);
1266
1267         asus->backlight_device = NULL;
1268 }
1269
1270 static void asus_wmi_notify(u32 value, void *context)
1271 {
1272         struct asus_wmi *asus = context;
1273         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1274         union acpi_object *obj;
1275         acpi_status status;
1276         int code;
1277         int orig_code;
1278         unsigned int key_value = 1;
1279         bool autorelease = 1;
1280
1281         status = wmi_get_event_data(value, &response);
1282         if (status != AE_OK) {
1283                 pr_err("bad event status 0x%x\n", status);
1284                 return;
1285         }
1286
1287         obj = (union acpi_object *)response.pointer;
1288
1289         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1290                 goto exit;
1291
1292         code = obj->integer.value;
1293         orig_code = code;
1294
1295         if (asus->driver->key_filter) {
1296                 asus->driver->key_filter(asus->driver, &code, &key_value,
1297                                          &autorelease);
1298                 if (code == ASUS_WMI_KEY_IGNORE)
1299                         goto exit;
1300         }
1301
1302         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1303                 code = NOTIFY_BRNUP_MIN;
1304         else if (code >= NOTIFY_BRNDOWN_MIN &&
1305                  code <= NOTIFY_BRNDOWN_MAX)
1306                 code = NOTIFY_BRNDOWN_MIN;
1307
1308         if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1309                 if (!acpi_video_backlight_support())
1310                         asus_wmi_backlight_notify(asus, orig_code);
1311         } else if (!sparse_keymap_report_event(asus->inputdev, code,
1312                                                key_value, autorelease))
1313                 pr_info("Unknown key %x pressed\n", code);
1314
1315 exit:
1316         kfree(obj);
1317 }
1318
1319 /*
1320  * Sys helpers
1321  */
1322 static int parse_arg(const char *buf, unsigned long count, int *val)
1323 {
1324         if (!count)
1325                 return 0;
1326         if (sscanf(buf, "%i", val) != 1)
1327                 return -EINVAL;
1328         return count;
1329 }
1330
1331 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1332                              const char *buf, size_t count)
1333 {
1334         u32 retval;
1335         int rv, err, value;
1336
1337         value = asus_wmi_get_devstate_simple(asus, devid);
1338         if (value == -ENODEV)   /* Check device presence */
1339                 return value;
1340
1341         rv = parse_arg(buf, count, &value);
1342         err = asus_wmi_set_devstate(devid, value, &retval);
1343
1344         if (err < 0)
1345                 return err;
1346
1347         return rv;
1348 }
1349
1350 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1351 {
1352         int value = asus_wmi_get_devstate_simple(asus, devid);
1353
1354         if (value < 0)
1355                 return value;
1356
1357         return sprintf(buf, "%d\n", value);
1358 }
1359
1360 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1361         static ssize_t show_##_name(struct device *dev,                 \
1362                                     struct device_attribute *attr,      \
1363                                     char *buf)                          \
1364         {                                                               \
1365                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1366                                                                         \
1367                 return show_sys_wmi(asus, _cm, buf);                    \
1368         }                                                               \
1369         static ssize_t store_##_name(struct device *dev,                \
1370                                      struct device_attribute *attr,     \
1371                                      const char *buf, size_t count)     \
1372         {                                                               \
1373                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1374                                                                         \
1375                 return store_sys_wmi(asus, _cm, buf, count);            \
1376         }                                                               \
1377         static struct device_attribute dev_attr_##_name = {             \
1378                 .attr = {                                               \
1379                         .name = __stringify(_name),                     \
1380                         .mode = _mode },                                \
1381                 .show   = show_##_name,                                 \
1382                 .store  = store_##_name,                                \
1383         }
1384
1385 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1386 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1387 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1388 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1389
1390 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1391                            const char *buf, size_t count)
1392 {
1393         int value, rv;
1394
1395         if (!count || sscanf(buf, "%i", &value) != 1)
1396                 return -EINVAL;
1397         if (value < 0 || value > 2)
1398                 return -EINVAL;
1399
1400         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1401         if (rv < 0)
1402                 return rv;
1403
1404         return count;
1405 }
1406
1407 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1408
1409 static struct attribute *platform_attributes[] = {
1410         &dev_attr_cpufv.attr,
1411         &dev_attr_camera.attr,
1412         &dev_attr_cardr.attr,
1413         &dev_attr_touchpad.attr,
1414         &dev_attr_lid_resume.attr,
1415         NULL
1416 };
1417
1418 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1419                                     struct attribute *attr, int idx)
1420 {
1421         struct device *dev = container_of(kobj, struct device, kobj);
1422         struct platform_device *pdev = to_platform_device(dev);
1423         struct asus_wmi *asus = platform_get_drvdata(pdev);
1424         bool ok = true;
1425         int devid = -1;
1426
1427         if (attr == &dev_attr_camera.attr)
1428                 devid = ASUS_WMI_DEVID_CAMERA;
1429         else if (attr == &dev_attr_cardr.attr)
1430                 devid = ASUS_WMI_DEVID_CARDREADER;
1431         else if (attr == &dev_attr_touchpad.attr)
1432                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1433         else if (attr == &dev_attr_lid_resume.attr)
1434                 devid = ASUS_WMI_DEVID_LID_RESUME;
1435
1436         if (devid != -1)
1437                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1438
1439         return ok ? attr->mode : 0;
1440 }
1441
1442 static struct attribute_group platform_attribute_group = {
1443         .is_visible = asus_sysfs_is_visible,
1444         .attrs = platform_attributes
1445 };
1446
1447 static void asus_wmi_sysfs_exit(struct platform_device *device)
1448 {
1449         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1450 }
1451
1452 static int asus_wmi_sysfs_init(struct platform_device *device)
1453 {
1454         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1455 }
1456
1457 /*
1458  * Platform device
1459  */
1460 static int asus_wmi_platform_init(struct asus_wmi *asus)
1461 {
1462         int rv;
1463
1464         /* INIT enable hotkeys on some models */
1465         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1466                 pr_info("Initialization: %#x", rv);
1467
1468         /* We don't know yet what to do with this version... */
1469         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1470                 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1471                 asus->spec = rv;
1472         }
1473
1474         /*
1475          * The SFUN method probably allows the original driver to get the list
1476          * of features supported by a given model. For now, 0x0100 or 0x0800
1477          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1478          * The significance of others is yet to be found.
1479          */
1480         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1481                 pr_info("SFUN value: %#x", rv);
1482                 asus->sfun = rv;
1483         }
1484
1485         /*
1486          * Eee PC and Notebooks seems to have different method_id for DSTS,
1487          * but it may also be related to the BIOS's SPEC.
1488          * Note, on most Eeepc, there is no way to check if a method exist
1489          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1490          * but once again, SPEC may probably be used for that kind of things.
1491          */
1492         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1493                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1494         else
1495                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1496
1497         /* CWAP allow to define the behavior of the Fn+F2 key,
1498          * this method doesn't seems to be present on Eee PCs */
1499         if (asus->driver->quirks->wapf >= 0)
1500                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1501                                       asus->driver->quirks->wapf, NULL);
1502
1503         return asus_wmi_sysfs_init(asus->platform_device);
1504 }
1505
1506 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1507 {
1508         asus_wmi_sysfs_exit(asus->platform_device);
1509 }
1510
1511 /*
1512  * debugfs
1513  */
1514 struct asus_wmi_debugfs_node {
1515         struct asus_wmi *asus;
1516         char *name;
1517         int (*show) (struct seq_file *m, void *data);
1518 };
1519
1520 static int show_dsts(struct seq_file *m, void *data)
1521 {
1522         struct asus_wmi *asus = m->private;
1523         int err;
1524         u32 retval = -1;
1525
1526         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1527
1528         if (err < 0)
1529                 return err;
1530
1531         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1532
1533         return 0;
1534 }
1535
1536 static int show_devs(struct seq_file *m, void *data)
1537 {
1538         struct asus_wmi *asus = m->private;
1539         int err;
1540         u32 retval = -1;
1541
1542         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1543                                     &retval);
1544
1545         if (err < 0)
1546                 return err;
1547
1548         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1549                    asus->debug.ctrl_param, retval);
1550
1551         return 0;
1552 }
1553
1554 static int show_call(struct seq_file *m, void *data)
1555 {
1556         struct asus_wmi *asus = m->private;
1557         struct bios_args args = {
1558                 .arg0 = asus->debug.dev_id,
1559                 .arg1 = asus->debug.ctrl_param,
1560         };
1561         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1562         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1563         union acpi_object *obj;
1564         acpi_status status;
1565
1566         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1567                                      1, asus->debug.method_id,
1568                                      &input, &output);
1569
1570         if (ACPI_FAILURE(status))
1571                 return -EIO;
1572
1573         obj = (union acpi_object *)output.pointer;
1574         if (obj && obj->type == ACPI_TYPE_INTEGER)
1575                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1576                            asus->debug.dev_id, asus->debug.ctrl_param,
1577                            (u32) obj->integer.value);
1578         else
1579                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1580                            asus->debug.dev_id, asus->debug.ctrl_param,
1581                            obj ? obj->type : -1);
1582
1583         kfree(obj);
1584
1585         return 0;
1586 }
1587
1588 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1589         {NULL, "devs", show_devs},
1590         {NULL, "dsts", show_dsts},
1591         {NULL, "call", show_call},
1592 };
1593
1594 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1595 {
1596         struct asus_wmi_debugfs_node *node = inode->i_private;
1597
1598         return single_open(file, node->show, node->asus);
1599 }
1600
1601 static const struct file_operations asus_wmi_debugfs_io_ops = {
1602         .owner = THIS_MODULE,
1603         .open = asus_wmi_debugfs_open,
1604         .read = seq_read,
1605         .llseek = seq_lseek,
1606         .release = single_release,
1607 };
1608
1609 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1610 {
1611         debugfs_remove_recursive(asus->debug.root);
1612 }
1613
1614 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1615 {
1616         struct dentry *dent;
1617         int i;
1618
1619         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1620         if (!asus->debug.root) {
1621                 pr_err("failed to create debugfs directory");
1622                 goto error_debugfs;
1623         }
1624
1625         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1626                                   asus->debug.root, &asus->debug.method_id);
1627         if (!dent)
1628                 goto error_debugfs;
1629
1630         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1631                                   asus->debug.root, &asus->debug.dev_id);
1632         if (!dent)
1633                 goto error_debugfs;
1634
1635         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1636                                   asus->debug.root, &asus->debug.ctrl_param);
1637         if (!dent)
1638                 goto error_debugfs;
1639
1640         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1641                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1642
1643                 node->asus = asus;
1644                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1645                                            asus->debug.root, node,
1646                                            &asus_wmi_debugfs_io_ops);
1647                 if (!dent) {
1648                         pr_err("failed to create debug file: %s\n", node->name);
1649                         goto error_debugfs;
1650                 }
1651         }
1652
1653         return 0;
1654
1655 error_debugfs:
1656         asus_wmi_debugfs_exit(asus);
1657         return -ENOMEM;
1658 }
1659
1660 /*
1661  * WMI Driver
1662  */
1663 static int asus_wmi_add(struct platform_device *pdev)
1664 {
1665         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1666         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1667         struct asus_wmi *asus;
1668         acpi_status status;
1669         int err;
1670         u32 result;
1671
1672         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1673         if (!asus)
1674                 return -ENOMEM;
1675
1676         asus->driver = wdrv;
1677         asus->platform_device = pdev;
1678         wdrv->platform_device = pdev;
1679         platform_set_drvdata(asus->platform_device, asus);
1680
1681         if (wdrv->detect_quirks)
1682                 wdrv->detect_quirks(asus->driver);
1683
1684         err = asus_wmi_platform_init(asus);
1685         if (err)
1686                 goto fail_platform;
1687
1688         err = asus_wmi_input_init(asus);
1689         if (err)
1690                 goto fail_input;
1691
1692         err = asus_wmi_hwmon_init(asus);
1693         if (err)
1694                 goto fail_hwmon;
1695
1696         err = asus_wmi_led_init(asus);
1697         if (err)
1698                 goto fail_leds;
1699
1700         err = asus_wmi_rfkill_init(asus);
1701         if (err)
1702                 goto fail_rfkill;
1703
1704         if (asus->driver->quirks->wmi_backlight_power)
1705                 acpi_video_dmi_promote_vendor();
1706         if (!acpi_video_backlight_support()) {
1707 #ifdef CONFIG_ACPI_VIDEO
1708                 pr_info("Disabling ACPI video driver\n");
1709                 acpi_video_unregister();
1710 #endif
1711                 err = asus_wmi_backlight_init(asus);
1712                 if (err && err != -ENODEV)
1713                         goto fail_backlight;
1714         } else
1715                 pr_info("Backlight controlled by ACPI video driver\n");
1716
1717         status = wmi_install_notify_handler(asus->driver->event_guid,
1718                                             asus_wmi_notify, asus);
1719         if (ACPI_FAILURE(status)) {
1720                 pr_err("Unable to register notify handler - %d\n", status);
1721                 err = -ENODEV;
1722                 goto fail_wmi_handler;
1723         }
1724
1725         err = asus_wmi_debugfs_init(asus);
1726         if (err)
1727                 goto fail_debugfs;
1728
1729         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
1730         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
1731                 asus->driver->wlan_ctrl_by_user = 1;
1732
1733         return 0;
1734
1735 fail_debugfs:
1736         wmi_remove_notify_handler(asus->driver->event_guid);
1737 fail_wmi_handler:
1738         asus_wmi_backlight_exit(asus);
1739 fail_backlight:
1740         asus_wmi_rfkill_exit(asus);
1741 fail_rfkill:
1742         asus_wmi_led_exit(asus);
1743 fail_leds:
1744         asus_wmi_hwmon_exit(asus);
1745 fail_hwmon:
1746         asus_wmi_input_exit(asus);
1747 fail_input:
1748         asus_wmi_platform_exit(asus);
1749 fail_platform:
1750         kfree(asus);
1751         return err;
1752 }
1753
1754 static int asus_wmi_remove(struct platform_device *device)
1755 {
1756         struct asus_wmi *asus;
1757
1758         asus = platform_get_drvdata(device);
1759         wmi_remove_notify_handler(asus->driver->event_guid);
1760         asus_wmi_backlight_exit(asus);
1761         asus_wmi_input_exit(asus);
1762         asus_wmi_hwmon_exit(asus);
1763         asus_wmi_led_exit(asus);
1764         asus_wmi_rfkill_exit(asus);
1765         asus_wmi_debugfs_exit(asus);
1766         asus_wmi_platform_exit(asus);
1767
1768         kfree(asus);
1769         return 0;
1770 }
1771
1772 /*
1773  * Platform driver - hibernate/resume callbacks
1774  */
1775 static int asus_hotk_thaw(struct device *device)
1776 {
1777         struct asus_wmi *asus = dev_get_drvdata(device);
1778
1779         if (asus->wlan.rfkill) {
1780                 bool wlan;
1781
1782                 /*
1783                  * Work around bios bug - acpi _PTS turns off the wireless led
1784                  * during suspend.  Normally it restores it on resume, but
1785                  * we should kick it ourselves in case hibernation is aborted.
1786                  */
1787                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1788                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1789         }
1790
1791         return 0;
1792 }
1793
1794 static int asus_hotk_restore(struct device *device)
1795 {
1796         struct asus_wmi *asus = dev_get_drvdata(device);
1797         int bl;
1798
1799         /* Refresh both wlan rfkill state and pci hotplug */
1800         if (asus->wlan.rfkill)
1801                 asus_rfkill_hotplug(asus);
1802
1803         if (asus->bluetooth.rfkill) {
1804                 bl = !asus_wmi_get_devstate_simple(asus,
1805                                                    ASUS_WMI_DEVID_BLUETOOTH);
1806                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1807         }
1808         if (asus->wimax.rfkill) {
1809                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1810                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1811         }
1812         if (asus->wwan3g.rfkill) {
1813                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1814                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1815         }
1816         if (asus->gps.rfkill) {
1817                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1818                 rfkill_set_sw_state(asus->gps.rfkill, bl);
1819         }
1820         if (asus->uwb.rfkill) {
1821                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1822                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1823         }
1824
1825         return 0;
1826 }
1827
1828 static const struct dev_pm_ops asus_pm_ops = {
1829         .thaw = asus_hotk_thaw,
1830         .restore = asus_hotk_restore,
1831 };
1832
1833 static int asus_wmi_probe(struct platform_device *pdev)
1834 {
1835         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1836         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1837         int ret;
1838
1839         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1840                 pr_warn("Management GUID not found\n");
1841                 return -ENODEV;
1842         }
1843
1844         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1845                 pr_warn("Event GUID not found\n");
1846                 return -ENODEV;
1847         }
1848
1849         if (wdrv->probe) {
1850                 ret = wdrv->probe(pdev);
1851                 if (ret)
1852                         return ret;
1853         }
1854
1855         return asus_wmi_add(pdev);
1856 }
1857
1858 static bool used;
1859
1860 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1861 {
1862         struct platform_driver *platform_driver;
1863         struct platform_device *platform_device;
1864
1865         if (used)
1866                 return -EBUSY;
1867
1868         platform_driver = &driver->platform_driver;
1869         platform_driver->remove = asus_wmi_remove;
1870         platform_driver->driver.owner = driver->owner;
1871         platform_driver->driver.name = driver->name;
1872         platform_driver->driver.pm = &asus_pm_ops;
1873
1874         platform_device = platform_create_bundle(platform_driver,
1875                                                  asus_wmi_probe,
1876                                                  NULL, 0, NULL, 0);
1877         if (IS_ERR(platform_device))
1878                 return PTR_ERR(platform_device);
1879
1880         used = true;
1881         return 0;
1882 }
1883 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1884
1885 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1886 {
1887         platform_device_unregister(driver->platform_device);
1888         platform_driver_unregister(&driver->platform_driver);
1889         used = false;
1890 }
1891 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1892
1893 static int __init asus_wmi_init(void)
1894 {
1895         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1896                 pr_info("Asus Management GUID not found");
1897                 return -ENODEV;
1898         }
1899
1900         pr_info("ASUS WMI generic driver loaded");
1901         return 0;
1902 }
1903
1904 static void __exit asus_wmi_exit(void)
1905 {
1906         pr_info("ASUS WMI generic driver unloaded");
1907 }
1908
1909 module_init(asus_wmi_init);
1910 module_exit(asus_wmi_exit);