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 <linux/acpi.h>
  49 #include <linux/dmi.h>
  50 #include <acpi/video.h>
  51
  52 #include "asus-wmi.h"
  53
  54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
  55               "Yong Wang <yong.y.wang@intel.com>");
  56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
  57 MODULE_LICENSE("GPL");
  58
  59 #define to_asus_wmi_driver(pdrv)                                        \
  60         (container_of((pdrv), struct asus_wmi_driver, platform_driver))
  61
  62 #define ASUS_WMI_MGMT_GUID      "97845ED0-4E6D-11DE-8A39-0800200C9A66"
  63
  64 #define NOTIFY_BRNUP_MIN                0x11
  65 #define NOTIFY_BRNUP_MAX                0x1f
  66 #define NOTIFY_BRNDOWN_MIN              0x20
  67 #define NOTIFY_BRNDOWN_MAX              0x2e
  68 #define NOTIFY_KBD_BRTUP                0xc4
  69 #define NOTIFY_KBD_BRTDWN               0xc5
  70
  71 /* WMI Methods */
  72 #define ASUS_WMI_METHODID_SPEC          0x43455053 /* BIOS SPECification */
  73 #define ASUS_WMI_METHODID_SFBD          0x44424653 /* Set First Boot Device */
  74 #define ASUS_WMI_METHODID_GLCD          0x44434C47 /* Get LCD status */
  75 #define ASUS_WMI_METHODID_GPID          0x44495047 /* Get Panel ID?? (Resol) */
  76 #define ASUS_WMI_METHODID_QMOD          0x444F4D51 /* Quiet MODe */
  77 #define ASUS_WMI_METHODID_SPLV          0x4C425053 /* Set Panel Light Value */
  78 #define ASUS_WMI_METHODID_AGFN          0x4E464741 /* FaN? */
  79 #define ASUS_WMI_METHODID_SFUN          0x4E554653 /* FUNCtionalities */
  80 #define ASUS_WMI_METHODID_SDSP          0x50534453 /* Set DiSPlay output */
  81 #define ASUS_WMI_METHODID_GDSP          0x50534447 /* Get DiSPlay output */
  82 #define ASUS_WMI_METHODID_DEVP          0x50564544 /* DEVice Policy */
  83 #define ASUS_WMI_METHODID_OSVR          0x5256534F /* OS VeRsion */
  84 #define ASUS_WMI_METHODID_DSTS          0x53544344 /* Device STatuS */
  85 #define ASUS_WMI_METHODID_DSTS2         0x53545344 /* Device STatuS #2*/
  86 #define ASUS_WMI_METHODID_BSTS          0x53545342 /* Bios STatuS ? */
  87 #define ASUS_WMI_METHODID_DEVS          0x53564544 /* DEVice Set */
  88 #define ASUS_WMI_METHODID_CFVS          0x53564643 /* CPU Frequency Volt Set */
  89 #define ASUS_WMI_METHODID_KBFT          0x5446424B /* KeyBoard FilTer */
  90 #define ASUS_WMI_METHODID_INIT          0x54494E49 /* INITialize */
  91 #define ASUS_WMI_METHODID_HKEY          0x59454B48 /* Hot KEY ?? */
  92
  93 #define ASUS_WMI_UNSUPPORTED_METHOD     0xFFFFFFFE
  94
  95 /* Wireless */
  96 #define ASUS_WMI_DEVID_HW_SWITCH        0x00010001
  97 #define ASUS_WMI_DEVID_WIRELESS_LED     0x00010002
  98 #define ASUS_WMI_DEVID_CWAP             0x00010003
  99 #define ASUS_WMI_DEVID_WLAN             0x00010011
 100 #define ASUS_WMI_DEVID_WLAN_LED         0x00010012
 101 #define ASUS_WMI_DEVID_BLUETOOTH        0x00010013
 102 #define ASUS_WMI_DEVID_GPS              0x00010015
 103 #define ASUS_WMI_DEVID_WIMAX            0x00010017
 104 #define ASUS_WMI_DEVID_WWAN3G           0x00010019
 105 #define ASUS_WMI_DEVID_UWB              0x00010021
 106
 107 /* Leds */
 108 /* 0x000200XX and 0x000400XX */
 109 #define ASUS_WMI_DEVID_LED1             0x00020011
 110 #define ASUS_WMI_DEVID_LED2             0x00020012
 111 #define ASUS_WMI_DEVID_LED3             0x00020013
 112 #define ASUS_WMI_DEVID_LED4             0x00020014
 113 #define ASUS_WMI_DEVID_LED5             0x00020015
 114 #define ASUS_WMI_DEVID_LED6             0x00020016
 115
 116 /* Backlight and Brightness */
 117 #define ASUS_WMI_DEVID_ALS_ENABLE       0x00050001 /* Ambient Light Sensor */
 118 #define ASUS_WMI_DEVID_BACKLIGHT        0x00050011
 119 #define ASUS_WMI_DEVID_BRIGHTNESS       0x00050012
 120 #define ASUS_WMI_DEVID_KBD_BACKLIGHT    0x00050021
 121 #define ASUS_WMI_DEVID_LIGHT_SENSOR     0x00050022 /* ?? */
 122
 123 /* Misc */
 124 #define ASUS_WMI_DEVID_CAMERA           0x00060013
 125
 126 /* Storage */
 127 #define ASUS_WMI_DEVID_CARDREADER       0x00080013
 128
 129 /* Input */
 130 #define ASUS_WMI_DEVID_TOUCHPAD         0x00100011
 131 #define ASUS_WMI_DEVID_TOUCHPAD_LED     0x00100012
 132
 133 /* Fan, Thermal */
 134 #define ASUS_WMI_DEVID_THERMAL_CTRL     0x00110011
 135 #define ASUS_WMI_DEVID_FAN_CTRL         0x00110012
 136
 137 /* Power */
 138 #define ASUS_WMI_DEVID_PROCESSOR_STATE  0x00120012
 139
 140 /* Deep S3 / Resume on LID open */
 141 #define ASUS_WMI_DEVID_LID_RESUME       0x00120031
 142
 143 /* DSTS masks */
 144 #define ASUS_WMI_DSTS_STATUS_BIT        0x00000001
 145 #define ASUS_WMI_DSTS_UNKNOWN_BIT       0x00000002
 146 #define ASUS_WMI_DSTS_PRESENCE_BIT      0x00010000
 147 #define ASUS_WMI_DSTS_USER_BIT          0x00020000
 148 #define ASUS_WMI_DSTS_BIOS_BIT          0x00040000
 149 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK   0x000000FF
 150 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK   0x0000FF00
 151
 152 #define ASUS_FAN_DESC                   "cpu_fan"
 153 #define ASUS_FAN_MFUN                   0x13
 154 #define ASUS_FAN_SFUN_READ              0x06
 155 #define ASUS_FAN_SFUN_WRITE             0x07
 156 #define ASUS_FAN_CTRL_MANUAL            1
 157 #define ASUS_FAN_CTRL_AUTO              2
 158
 159 #define USB_INTEL_XUSB2PR               0xD0
 160 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI   0x9c31
 161
 162 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
 163
 164 static bool ashs_present(void)
 165 {
 166         int i = 0;
 167         while (ashs_ids[i]) {
 168                 if (acpi_dev_found(ashs_ids[i++]))
 169                         return true;
 170         }
 171         return false;
 172 }
 173
 174 struct bios_args {
 175         u32 arg0;
 176         u32 arg1;
 177 } __packed;
 178
 179 /*
 180  * Struct that's used for all methods called via AGFN. Naming is
 181  * identically to the AML code.
 182  */
 183 struct agfn_args {
 184         u16 mfun; /* probably "Multi-function" to be called */
 185         u16 sfun; /* probably "Sub-function" to be called */
 186         u16 len;  /* size of the hole struct, including subfunction fields */
 187         u8 stas;  /* not used by now */
 188         u8 err;   /* zero on success */
 189 } __packed;
 190
 191 /* struct used for calling fan read and write methods */
 192 struct fan_args {
 193         struct agfn_args agfn;  /* common fields */
 194         u8 fan;                 /* fan number: 0: set auto mode 1: 1st fan */
 195         u32 speed;              /* read: RPM/100 - write: 0-255 */
 196 } __packed;
 197
 198 /*
 199  * <platform>/    - debugfs root directory
 200  *   dev_id      - current dev_id
 201  *   ctrl_param  - current ctrl_param
 202  *   method_id   - current method_id
 203  *   devs        - call DEVS(dev_id, ctrl_param) and print result
 204  *   dsts        - call DSTS(dev_id)  and print result
 205  *   call        - call method_id(dev_id, ctrl_param) and print result
 206  */
 207 struct asus_wmi_debug {
 208         struct dentry *root;
 209         u32 method_id;
 210         u32 dev_id;
 211         u32 ctrl_param;
 212 };
 213
 214 struct asus_rfkill {
 215         struct asus_wmi *asus;
 216         struct rfkill *rfkill;
 217         u32 dev_id;
 218 };
 219
 220 struct asus_wmi {
 221         int dsts_id;
 222         int spec;
 223         int sfun;
 224
 225         struct input_dev *inputdev;
 226         struct backlight_device *backlight_device;
 227         struct platform_device *platform_device;
 228
 229         struct led_classdev wlan_led;
 230         int wlan_led_wk;
 231         struct led_classdev tpd_led;
 232         int tpd_led_wk;
 233         struct led_classdev kbd_led;
 234         int kbd_led_wk;
 235         struct workqueue_struct *led_workqueue;
 236         struct work_struct tpd_led_work;
 237         struct work_struct kbd_led_work;
 238         struct work_struct wlan_led_work;
 239
 240         struct asus_rfkill wlan;
 241         struct asus_rfkill bluetooth;
 242         struct asus_rfkill wimax;
 243         struct asus_rfkill wwan3g;
 244         struct asus_rfkill gps;
 245         struct asus_rfkill uwb;
 246
 247         bool asus_hwmon_fan_manual_mode;
 248         int asus_hwmon_num_fans;
 249         int asus_hwmon_pwm;
 250
 251         struct hotplug_slot *hotplug_slot;
 252         struct mutex hotplug_lock;
 253         struct mutex wmi_lock;
 254         struct workqueue_struct *hotplug_workqueue;
 255         struct work_struct hotplug_work;
 256
 257         struct asus_wmi_debug debug;
 258
 259         struct asus_wmi_driver *driver;
 260 };
 261
 262 static int asus_wmi_input_init(struct asus_wmi *asus)
 263 {
 264         int err;
 265
 266         asus->inputdev = input_allocate_device();
 267         if (!asus->inputdev)
 268                 return -ENOMEM;
 269
 270         asus->inputdev->name = asus->driver->input_name;
 271         asus->inputdev->phys = asus->driver->input_phys;
 272         asus->inputdev->id.bustype = BUS_HOST;
 273         asus->inputdev->dev.parent = &asus->platform_device->dev;
 274         set_bit(EV_REP, asus->inputdev->evbit);
 275
 276         err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
 277         if (err)
 278                 goto err_free_dev;
 279
 280         err = input_register_device(asus->inputdev);
 281         if (err)
 282                 goto err_free_dev;
 283
 284         return 0;
 285
 286 err_free_dev:
 287         input_free_device(asus->inputdev);
 288         return err;
 289 }
 290
 291 static void asus_wmi_input_exit(struct asus_wmi *asus)
 292 {
 293         if (asus->inputdev)
 294                 input_unregister_device(asus->inputdev);
 295
 296         asus->inputdev = NULL;
 297 }
 298
 299 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
 300                                     u32 *retval)
 301 {
 302         struct bios_args args = {
 303                 .arg0 = arg0,
 304                 .arg1 = arg1,
 305         };
 306         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
 307         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 308         acpi_status status;
 309         union acpi_object *obj;
 310         u32 tmp = 0;
 311
 312         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
 313                                      &input, &output);
 314
 315         if (ACPI_FAILURE(status))
 316                 goto exit;
 317
 318         obj = (union acpi_object *)output.pointer;
 319         if (obj && obj->type == ACPI_TYPE_INTEGER)
 320                 tmp = (u32) obj->integer.value;
 321
 322         if (retval)
 323                 *retval = tmp;
 324
 325         kfree(obj);
 326
 327 exit:
 328         if (ACPI_FAILURE(status))
 329                 return -EIO;
 330
 331         if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
 332                 return -ENODEV;
 333
 334         return 0;
 335 }
 336
 337 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
 338 {
 339         struct acpi_buffer input;
 340         u64 phys_addr;
 341         u32 retval;
 342         u32 status = -1;
 343
 344         /*
 345          * Copy to dma capable address otherwise memory corruption occurs as
 346          * bios has to be able to access it.
 347          */
 348         input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
 349         input.length = args.length;
 350         if (!input.pointer)
 351                 return -ENOMEM;
 352         phys_addr = virt_to_phys(input.pointer);
 353         memcpy(input.pointer, args.pointer, args.length);
 354
 355         status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
 356                                         phys_addr, 0, &retval);
 357         if (!status)
 358                 memcpy(args.pointer, input.pointer, args.length);
 359
 360         kfree(input.pointer);
 361         if (status)
 362                 return -ENXIO;
 363
 364         return retval;
 365 }
 366
 367 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
 368 {
 369         return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
 370 }
 371
 372 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
 373                                  u32 *retval)
 374 {
 375         return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
 376                                         ctrl_param, retval);
 377 }
 378
 379 /* Helper for special devices with magic return codes */
 380 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
 381                                       u32 dev_id, u32 mask)
 382 {
 383         u32 retval = 0;
 384         int err;
 385
 386         err = asus_wmi_get_devstate(asus, dev_id, &retval);
 387
 388         if (err < 0)
 389                 return err;
 390
 391         if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
 392                 return -ENODEV;
 393
 394         if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
 395                 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
 396                         return -ENODEV;
 397         }
 398
 399         return retval & mask;
 400 }
 401
 402 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
 403 {
 404         return asus_wmi_get_devstate_bits(asus, dev_id,
 405                                           ASUS_WMI_DSTS_STATUS_BIT);
 406 }
 407
 408 /*
 409  * LEDs
 410  */
 411 /*
 412  * These functions actually update the LED's, and are called from a
 413  * workqueue. By doing this as separate work rather than when the LED
 414  * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 415  * potentially bad time, such as a timer interrupt.
 416  */
 417 static void tpd_led_update(struct work_struct *work)
 418 {
 419         int ctrl_param;
 420         struct asus_wmi *asus;
 421
 422         asus = container_of(work, struct asus_wmi, tpd_led_work);
 423
 424         ctrl_param = asus->tpd_led_wk;
 425         asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
 426 }
 427
 428 static void tpd_led_set(struct led_classdev *led_cdev,
 429                         enum led_brightness value)
 430 {
 431         struct asus_wmi *asus;
 432
 433         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 434
 435         asus->tpd_led_wk = !!value;
 436         queue_work(asus->led_workqueue, &asus->tpd_led_work);
 437 }
 438
 439 static int read_tpd_led_state(struct asus_wmi *asus)
 440 {
 441         return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
 442 }
 443
 444 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
 445 {
 446         struct asus_wmi *asus;
 447
 448         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 449
 450         return read_tpd_led_state(asus);
 451 }
 452
 453 static void kbd_led_update(struct work_struct *work)
 454 {
 455         int ctrl_param = 0;
 456         struct asus_wmi *asus;
 457
 458         asus = container_of(work, struct asus_wmi, kbd_led_work);
 459
 460         ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
 461         asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
 462 }
 463
 464 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
 465 {
 466         int retval;
 467
 468         /*
 469          * bits 0-2: level
 470          * bit 7: light on/off
 471          * bit 8-10: environment (0: dark, 1: normal, 2: light)
 472          * bit 17: status unknown
 473          */
 474         retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
 475                                             0xFFFF);
 476
 477         /* Unknown status is considered as off */
 478         if (retval == 0x8000)
 479                 retval = 0;
 480
 481         if (retval >= 0) {
 482                 if (level)
 483                         *level = retval & 0x7F;
 484                 if (env)
 485                         *env = (retval >> 8) & 0x7F;
 486                 retval = 0;
 487         }
 488
 489         return retval;
 490 }
 491
 492 static void kbd_led_set(struct led_classdev *led_cdev,
 493                         enum led_brightness value)
 494 {
 495         struct asus_wmi *asus;
 496
 497         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 498
 499         if (value > asus->kbd_led.max_brightness)
 500                 value = asus->kbd_led.max_brightness;
 501         else if (value < 0)
 502                 value = 0;
 503
 504         asus->kbd_led_wk = value;
 505         queue_work(asus->led_workqueue, &asus->kbd_led_work);
 506 }
 507
 508 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 509 {
 510         struct asus_wmi *asus;
 511         int retval, value;
 512
 513         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 514
 515         retval = kbd_led_read(asus, &value, NULL);
 516
 517         if (retval < 0)
 518                 return retval;
 519
 520         return value;
 521 }
 522
 523 static int wlan_led_unknown_state(struct asus_wmi *asus)
 524 {
 525         u32 result;
 526
 527         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 528
 529         return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
 530 }
 531
 532 static int wlan_led_presence(struct asus_wmi *asus)
 533 {
 534         u32 result;
 535
 536         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 537
 538         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
 539 }
 540
 541 static void wlan_led_update(struct work_struct *work)
 542 {
 543         int ctrl_param;
 544         struct asus_wmi *asus;
 545
 546         asus = container_of(work, struct asus_wmi, wlan_led_work);
 547
 548         ctrl_param = asus->wlan_led_wk;
 549         asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
 550 }
 551
 552 static void wlan_led_set(struct led_classdev *led_cdev,
 553                          enum led_brightness value)
 554 {
 555         struct asus_wmi *asus;
 556
 557         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 558
 559         asus->wlan_led_wk = !!value;
 560         queue_work(asus->led_workqueue, &asus->wlan_led_work);
 561 }
 562
 563 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
 564 {
 565         struct asus_wmi *asus;
 566         u32 result;
 567
 568         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 569         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 570
 571         return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
 572 }
 573
 574 static void asus_wmi_led_exit(struct asus_wmi *asus)
 575 {
 576         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
 577                 led_classdev_unregister(&asus->kbd_led);
 578         if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
 579                 led_classdev_unregister(&asus->tpd_led);
 580         if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
 581                 led_classdev_unregister(&asus->wlan_led);
 582         if (asus->led_workqueue)
 583                 destroy_workqueue(asus->led_workqueue);
 584 }
 585
 586 static int asus_wmi_led_init(struct asus_wmi *asus)
 587 {
 588         int rv = 0, led_val;
 589
 590         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 591         if (!asus->led_workqueue)
 592                 return -ENOMEM;
 593
 594         if (read_tpd_led_state(asus) >= 0) {
 595                 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
 596
 597                 asus->tpd_led.name = "asus::touchpad";
 598                 asus->tpd_led.brightness_set = tpd_led_set;
 599                 asus->tpd_led.brightness_get = tpd_led_get;
 600                 asus->tpd_led.max_brightness = 1;
 601
 602                 rv = led_classdev_register(&asus->platform_device->dev,
 603                                            &asus->tpd_led);
 604                 if (rv)
 605                         goto error;
 606         }
 607
 608         led_val = kbd_led_read(asus, NULL, NULL);
 609         if (led_val >= 0) {
 610                 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
 611
 612                 asus->kbd_led_wk = led_val;
 613                 asus->kbd_led.name = "asus::kbd_backlight";
 614                 asus->kbd_led.brightness_set = kbd_led_set;
 615                 asus->kbd_led.brightness_get = kbd_led_get;
 616                 asus->kbd_led.max_brightness = 3;
 617
 618                 rv = led_classdev_register(&asus->platform_device->dev,
 619                                            &asus->kbd_led);
 620                 if (rv)
 621                         goto error;
 622         }
 623
 624         if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
 625                 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
 626
 627                 asus->wlan_led.name = "asus::wlan";
 628                 asus->wlan_led.brightness_set = wlan_led_set;
 629                 if (!wlan_led_unknown_state(asus))
 630                         asus->wlan_led.brightness_get = wlan_led_get;
 631                 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
 632                 asus->wlan_led.max_brightness = 1;
 633                 asus->wlan_led.default_trigger = "asus-wlan";
 634
 635                 rv = led_classdev_register(&asus->platform_device->dev,
 636                                            &asus->wlan_led);
 637         }
 638
 639 error:
 640         if (rv)
 641                 asus_wmi_led_exit(asus);
 642
 643         return rv;
 644 }
 645
 646
 647 /*
 648  * PCI hotplug (for wlan rfkill)
 649  */
 650 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
 651 {
 652         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 653
 654         if (result < 0)
 655                 return false;
 656         return !result;
 657 }
 658
 659 static void asus_rfkill_hotplug(struct asus_wmi *asus)
 660 {
 661         struct pci_dev *dev;
 662         struct pci_bus *bus;
 663         bool blocked;
 664         bool absent;
 665         u32 l;
 666
 667         mutex_lock(&asus->wmi_lock);
 668         blocked = asus_wlan_rfkill_blocked(asus);
 669         mutex_unlock(&asus->wmi_lock);
 670
 671         mutex_lock(&asus->hotplug_lock);
 672         pci_lock_rescan_remove();
 673
 674         if (asus->wlan.rfkill)
 675                 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
 676
 677         if (asus->hotplug_slot) {
 678                 bus = pci_find_bus(0, 1);
 679                 if (!bus) {
 680                         pr_warn("Unable to find PCI bus 1?\n");
 681                         goto out_unlock;
 682                 }
 683
 684                 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
 685                         pr_err("Unable to read PCI config space?\n");
 686                         goto out_unlock;
 687                 }
 688                 absent = (l == 0xffffffff);
 689
 690                 if (blocked != absent) {
 691                         pr_warn("BIOS says wireless lan is %s, "
 692                                 "but the pci device is %s\n",
 693                                 blocked ? "blocked" : "unblocked",
 694                                 absent ? "absent" : "present");
 695                         pr_warn("skipped wireless hotplug as probably "
 696                                 "inappropriate for this model\n");
 697                         goto out_unlock;
 698                 }
 699
 700                 if (!blocked) {
 701                         dev = pci_get_slot(bus, 0);
 702                         if (dev) {
 703                                 /* Device already present */
 704                                 pci_dev_put(dev);
 705                                 goto out_unlock;
 706                         }
 707                         dev = pci_scan_single_device(bus, 0);
 708                         if (dev) {
 709                                 pci_bus_assign_resources(bus);
 710                                 pci_bus_add_device(dev);
 711                         }
 712                 } else {
 713                         dev = pci_get_slot(bus, 0);
 714                         if (dev) {
 715                                 pci_stop_and_remove_bus_device(dev);
 716                                 pci_dev_put(dev);
 717                         }
 718                 }
 719         }
 720
 721 out_unlock:
 722         pci_unlock_rescan_remove();
 723         mutex_unlock(&asus->hotplug_lock);
 724 }
 725
 726 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
 727 {
 728         struct asus_wmi *asus = data;
 729
 730         if (event != ACPI_NOTIFY_BUS_CHECK)
 731                 return;
 732
 733         /*
 734          * We can't call directly asus_rfkill_hotplug because most
 735          * of the time WMBC is still being executed and not reetrant.
 736          * There is currently no way to tell ACPICA that  we want this
 737          * method to be serialized, we schedule a asus_rfkill_hotplug
 738          * call later, in a safer context.
 739          */
 740         queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
 741 }
 742
 743 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
 744 {
 745         acpi_status status;
 746         acpi_handle handle;
 747
 748         status = acpi_get_handle(NULL, node, &handle);
 749
 750         if (ACPI_SUCCESS(status)) {
 751                 status = acpi_install_notify_handler(handle,
 752                                                      ACPI_SYSTEM_NOTIFY,
 753                                                      asus_rfkill_notify, asus);
 754                 if (ACPI_FAILURE(status))
 755                         pr_warn("Failed to register notify on %s\n", node);
 756         } else
 757                 return -ENODEV;
 758
 759         return 0;
 760 }
 761
 762 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
 763 {
 764         acpi_status status = AE_OK;
 765         acpi_handle handle;
 766
 767         status = acpi_get_handle(NULL, node, &handle);
 768
 769         if (ACPI_SUCCESS(status)) {
 770                 status = acpi_remove_notify_handler(handle,
 771                                                     ACPI_SYSTEM_NOTIFY,
 772                                                     asus_rfkill_notify);
 773                 if (ACPI_FAILURE(status))
 774                         pr_err("Error removing rfkill notify handler %s\n",
 775                                node);
 776         }
 777 }
 778
 779 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
 780                                    u8 *value)
 781 {
 782         struct asus_wmi *asus = hotplug_slot->private;
 783         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 784
 785         if (result < 0)
 786                 return result;
 787
 788         *value = !!result;
 789         return 0;
 790 }
 791
 792 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
 793 {
 794         kfree(hotplug_slot->info);
 795         kfree(hotplug_slot);
 796 }
 797
 798 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
 799         .owner = THIS_MODULE,
 800         .get_adapter_status = asus_get_adapter_status,
 801         .get_power_status = asus_get_adapter_status,
 802 };
 803
 804 static void asus_hotplug_work(struct work_struct *work)
 805 {
 806         struct asus_wmi *asus;
 807
 808         asus = container_of(work, struct asus_wmi, hotplug_work);
 809         asus_rfkill_hotplug(asus);
 810 }
 811
 812 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
 813 {
 814         int ret = -ENOMEM;
 815         struct pci_bus *bus = pci_find_bus(0, 1);
 816
 817         if (!bus) {
 818                 pr_err("Unable to find wifi PCI bus\n");
 819                 return -ENODEV;
 820         }
 821
 822         asus->hotplug_workqueue =
 823             create_singlethread_workqueue("hotplug_workqueue");
 824         if (!asus->hotplug_workqueue)
 825                 goto error_workqueue;
 826
 827         INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
 828
 829         asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 830         if (!asus->hotplug_slot)
 831                 goto error_slot;
 832
 833         asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
 834                                            GFP_KERNEL);
 835         if (!asus->hotplug_slot->info)
 836                 goto error_info;
 837
 838         asus->hotplug_slot->private = asus;
 839         asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
 840         asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
 841         asus_get_adapter_status(asus->hotplug_slot,
 842                                 &asus->hotplug_slot->info->adapter_status);
 843
 844         ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
 845         if (ret) {
 846                 pr_err("Unable to register hotplug slot - %d\n", ret);
 847                 goto error_register;
 848         }
 849
 850         return 0;
 851
 852 error_register:
 853         kfree(asus->hotplug_slot->info);
 854 error_info:
 855         kfree(asus->hotplug_slot);
 856         asus->hotplug_slot = NULL;
 857 error_slot:
 858         destroy_workqueue(asus->hotplug_workqueue);
 859 error_workqueue:
 860         return ret;
 861 }
 862
 863 /*
 864  * Rfkill devices
 865  */
 866 static int asus_rfkill_set(void *data, bool blocked)
 867 {
 868         struct asus_rfkill *priv = data;
 869         u32 ctrl_param = !blocked;
 870         u32 dev_id = priv->dev_id;
 871
 872         /*
 873          * If the user bit is set, BIOS can't set and record the wlan status,
 874          * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
 875          * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
 876          * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
 877          * while setting the wlan status through WMI.
 878          * This is also the behavior that windows app will do.
 879          */
 880         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 881              priv->asus->driver->wlan_ctrl_by_user)
 882                 dev_id = ASUS_WMI_DEVID_WLAN_LED;
 883
 884         return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
 885 }
 886
 887 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
 888 {
 889         struct asus_rfkill *priv = data;
 890         int result;
 891
 892         result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
 893
 894         if (result < 0)
 895                 return;
 896
 897         rfkill_set_sw_state(priv->rfkill, !result);
 898 }
 899
 900 static int asus_rfkill_wlan_set(void *data, bool blocked)
 901 {
 902         struct asus_rfkill *priv = data;
 903         struct asus_wmi *asus = priv->asus;
 904         int ret;
 905
 906         /*
 907          * This handler is enabled only if hotplug is enabled.
 908          * In this case, the asus_wmi_set_devstate() will
 909          * trigger a wmi notification and we need to wait
 910          * this call to finish before being able to call
 911          * any wmi method
 912          */
 913         mutex_lock(&asus->wmi_lock);
 914         ret = asus_rfkill_set(data, blocked);
 915         mutex_unlock(&asus->wmi_lock);
 916         return ret;
 917 }
 918
 919 static const struct rfkill_ops asus_rfkill_wlan_ops = {
 920         .set_block = asus_rfkill_wlan_set,
 921         .query = asus_rfkill_query,
 922 };
 923
 924 static const struct rfkill_ops asus_rfkill_ops = {
 925         .set_block = asus_rfkill_set,
 926         .query = asus_rfkill_query,
 927 };
 928
 929 static int asus_new_rfkill(struct asus_wmi *asus,
 930                            struct asus_rfkill *arfkill,
 931                            const char *name, enum rfkill_type type, int dev_id)
 932 {
 933         int result = asus_wmi_get_devstate_simple(asus, dev_id);
 934         struct rfkill **rfkill = &arfkill->rfkill;
 935
 936         if (result < 0)
 937                 return result;
 938
 939         arfkill->dev_id = dev_id;
 940         arfkill->asus = asus;
 941
 942         if (dev_id == ASUS_WMI_DEVID_WLAN &&
 943             asus->driver->quirks->hotplug_wireless)
 944                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 945                                        &asus_rfkill_wlan_ops, arfkill);
 946         else
 947                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 948                                        &asus_rfkill_ops, arfkill);
 949
 950         if (!*rfkill)
 951                 return -EINVAL;
 952
 953         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 954                         (asus->driver->quirks->wapf > 0))
 955                 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
 956
 957         rfkill_init_sw_state(*rfkill, !result);
 958         result = rfkill_register(*rfkill);
 959         if (result) {
 960                 rfkill_destroy(*rfkill);
 961                 *rfkill = NULL;
 962                 return result;
 963         }
 964         return 0;
 965 }
 966
 967 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
 968 {
 969         if (asus->driver->wlan_ctrl_by_user && ashs_present())
 970                 return;
 971
 972         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
 973         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
 974         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
 975         if (asus->wlan.rfkill) {
 976                 rfkill_unregister(asus->wlan.rfkill);
 977                 rfkill_destroy(asus->wlan.rfkill);
 978                 asus->wlan.rfkill = NULL;
 979         }
 980         /*
 981          * Refresh pci hotplug in case the rfkill state was changed after
 982          * asus_unregister_rfkill_notifier()
 983          */
 984         asus_rfkill_hotplug(asus);
 985         if (asus->hotplug_slot)
 986                 pci_hp_deregister(asus->hotplug_slot);
 987         if (asus->hotplug_workqueue)
 988                 destroy_workqueue(asus->hotplug_workqueue);
 989
 990         if (asus->bluetooth.rfkill) {
 991                 rfkill_unregister(asus->bluetooth.rfkill);
 992                 rfkill_destroy(asus->bluetooth.rfkill);
 993                 asus->bluetooth.rfkill = NULL;
 994         }
 995         if (asus->wimax.rfkill) {
 996                 rfkill_unregister(asus->wimax.rfkill);
 997                 rfkill_destroy(asus->wimax.rfkill);
 998                 asus->wimax.rfkill = NULL;
 999         }
1000         if (asus->wwan3g.rfkill) {
1001                 rfkill_unregister(asus->wwan3g.rfkill);
1002                 rfkill_destroy(asus->wwan3g.rfkill);
1003                 asus->wwan3g.rfkill = NULL;
1004         }
1005         if (asus->gps.rfkill) {
1006                 rfkill_unregister(asus->gps.rfkill);
1007                 rfkill_destroy(asus->gps.rfkill);
1008                 asus->gps.rfkill = NULL;
1009         }
1010         if (asus->uwb.rfkill) {
1011                 rfkill_unregister(asus->uwb.rfkill);
1012                 rfkill_destroy(asus->uwb.rfkill);
1013                 asus->uwb.rfkill = NULL;
1014         }
1015 }
1016
1017 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1018 {
1019         int result = 0;
1020
1021         mutex_init(&asus->hotplug_lock);
1022         mutex_init(&asus->wmi_lock);
1023
1024         result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1025                                  RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1026
1027         if (result && result != -ENODEV)
1028                 goto exit;
1029
1030         result = asus_new_rfkill(asus, &asus->bluetooth,
1031                                  "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1032                                  ASUS_WMI_DEVID_BLUETOOTH);
1033
1034         if (result && result != -ENODEV)
1035                 goto exit;
1036
1037         result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1038                                  RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1039
1040         if (result && result != -ENODEV)
1041                 goto exit;
1042
1043         result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1044                                  RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1045
1046         if (result && result != -ENODEV)
1047                 goto exit;
1048
1049         result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1050                                  RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1051
1052         if (result && result != -ENODEV)
1053                 goto exit;
1054
1055         result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1056                                  RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1057
1058         if (result && result != -ENODEV)
1059                 goto exit;
1060
1061         if (!asus->driver->quirks->hotplug_wireless)
1062                 goto exit;
1063
1064         result = asus_setup_pci_hotplug(asus);
1065         /*
1066          * If we get -EBUSY then something else is handling the PCI hotplug -
1067          * don't fail in this case
1068          */
1069         if (result == -EBUSY)
1070                 result = 0;
1071
1072         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1073         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1074         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1075         /*
1076          * Refresh pci hotplug in case the rfkill state was changed during
1077          * setup.
1078          */
1079         asus_rfkill_hotplug(asus);
1080
1081 exit:
1082         if (result && result != -ENODEV)
1083                 asus_wmi_rfkill_exit(asus);
1084
1085         if (result == -ENODEV)
1086                 result = 0;
1087
1088         return result;
1089 }
1090
1091 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1092 {
1093         struct pci_dev *xhci_pdev;
1094         u32 orig_ports_available;
1095         u32 ports_available = asus->driver->quirks->xusb2pr;
1096
1097         xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1098                         PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1099                         NULL);
1100
1101         if (!xhci_pdev)
1102                 return;
1103
1104         pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1105                                 &orig_ports_available);
1106
1107         pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1108                                 cpu_to_le32(ports_available));
1109
1110         pci_dev_put(xhci_pdev);
1111
1112         pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1113                         orig_ports_available, ports_available);
1114 }
1115
1116 /*
1117  * Some devices dont support or have borcken get_als method
1118  * but still support set method.
1119  */
1120 static void asus_wmi_set_als(void)
1121 {
1122         asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1123 }
1124
1125 /*
1126  * Hwmon device
1127  */
1128 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1129                                           int *speed)
1130 {
1131         struct fan_args args = {
1132                 .agfn.len = sizeof(args),
1133                 .agfn.mfun = ASUS_FAN_MFUN,
1134                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1135                 .fan = fan,
1136                 .speed = 0,
1137         };
1138         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1139         int status;
1140
1141         if (fan != 1)
1142                 return -EINVAL;
1143
1144         status = asus_wmi_evaluate_method_agfn(input);
1145
1146         if (status || args.agfn.err)
1147                 return -ENXIO;
1148
1149         if (speed)
1150                 *speed = args.speed;
1151
1152         return 0;
1153 }
1154
1155 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1156                                      int *speed)
1157 {
1158         struct fan_args args = {
1159                 .agfn.len = sizeof(args),
1160                 .agfn.mfun = ASUS_FAN_MFUN,
1161                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1162                 .fan = fan,
1163                 .speed = speed ?  *speed : 0,
1164         };
1165         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1166         int status;
1167
1168         /* 1: for setting 1st fan's speed 0: setting auto mode */
1169         if (fan != 1 && fan != 0)
1170                 return -EINVAL;
1171
1172         status = asus_wmi_evaluate_method_agfn(input);
1173
1174         if (status || args.agfn.err)
1175                 return -ENXIO;
1176
1177         if (speed && fan == 1)
1178                 asus->asus_hwmon_pwm = *speed;
1179
1180         return 0;
1181 }
1182
1183 /*
1184  * Check if we can read the speed of one fan. If true we assume we can also
1185  * control it.
1186  */
1187 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1188 {
1189         int status;
1190         int speed = 0;
1191
1192         *num_fans = 0;
1193
1194         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1195         if (!status)
1196                 *num_fans = 1;
1197
1198         return 0;
1199 }
1200
1201 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1202 {
1203         int status;
1204
1205         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1206         if (status)
1207                 return -ENXIO;
1208
1209         asus->asus_hwmon_fan_manual_mode = false;
1210
1211         return 0;
1212 }
1213
1214 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1215 {
1216         struct asus_wmi *asus = dev_get_drvdata(dev);
1217         int value;
1218         int ret;
1219
1220         /* no speed readable on manual mode */
1221         if (asus->asus_hwmon_fan_manual_mode)
1222                 return -ENXIO;
1223
1224         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1225         if (ret) {
1226                 pr_warn("reading fan speed failed: %d\n", ret);
1227                 return -ENXIO;
1228         }
1229
1230         return value;
1231 }
1232
1233 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1234 {
1235         int err;
1236
1237         if (asus->asus_hwmon_pwm >= 0) {
1238                 *value = asus->asus_hwmon_pwm;
1239                 return;
1240         }
1241
1242         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1243         if (err < 0)
1244                 return;
1245
1246         *value &= 0xFF;
1247
1248         if (*value == 1) /* Low Speed */
1249                 *value = 85;
1250         else if (*value == 2)
1251                 *value = 170;
1252         else if (*value == 3)
1253                 *value = 255;
1254         else if (*value) {
1255                 pr_err("Unknown fan speed %#x\n", *value);
1256                 *value = -1;
1257         }
1258 }
1259
1260 static ssize_t pwm1_show(struct device *dev,
1261                                struct device_attribute *attr,
1262                                char *buf)
1263 {
1264         struct asus_wmi *asus = dev_get_drvdata(dev);
1265         int value;
1266
1267         asus_hwmon_pwm_show(asus, 0, &value);
1268
1269         return sprintf(buf, "%d\n", value);
1270 }
1271
1272 static ssize_t pwm1_store(struct device *dev,
1273                                      struct device_attribute *attr,
1274                                      const char *buf, size_t count) {
1275         struct asus_wmi *asus = dev_get_drvdata(dev);
1276         int value;
1277         int state;
1278         int ret;
1279
1280         ret = kstrtouint(buf, 10, &value);
1281
1282         if (ret)
1283                 return ret;
1284
1285         value = clamp(value, 0, 255);
1286
1287         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1288         if (state)
1289                 pr_warn("Setting fan speed failed: %d\n", state);
1290         else
1291                 asus->asus_hwmon_fan_manual_mode = true;
1292
1293         return count;
1294 }
1295
1296 static ssize_t fan1_input_show(struct device *dev,
1297                                         struct device_attribute *attr,
1298                                         char *buf)
1299 {
1300         int value = asus_hwmon_fan_rpm_show(dev, 0);
1301
1302         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1303
1304 }
1305
1306 static ssize_t pwm1_enable_show(struct device *dev,
1307                                                  struct device_attribute *attr,
1308                                                  char *buf)
1309 {
1310         struct asus_wmi *asus = dev_get_drvdata(dev);
1311
1312         if (asus->asus_hwmon_fan_manual_mode)
1313                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1314
1315         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1316 }
1317
1318 static ssize_t pwm1_enable_store(struct device *dev,
1319                                                   struct device_attribute *attr,
1320                                                   const char *buf, size_t count)
1321 {
1322         struct asus_wmi *asus = dev_get_drvdata(dev);
1323         int status = 0;
1324         int state;
1325         int ret;
1326
1327         ret = kstrtouint(buf, 10, &state);
1328
1329         if (ret)
1330                 return ret;
1331
1332         if (state == ASUS_FAN_CTRL_MANUAL)
1333                 asus->asus_hwmon_fan_manual_mode = true;
1334         else
1335                 status = asus_hwmon_fan_set_auto(asus);
1336
1337         if (status)
1338                 return status;
1339
1340         return count;
1341 }
1342
1343 static ssize_t fan1_label_show(struct device *dev,
1344                                           struct device_attribute *attr,
1345                                           char *buf)
1346 {
1347         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1348 }
1349
1350 static ssize_t asus_hwmon_temp1(struct device *dev,
1351                                 struct device_attribute *attr,
1352                                 char *buf)
1353 {
1354         struct asus_wmi *asus = dev_get_drvdata(dev);
1355         u32 value;
1356         int err;
1357
1358         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1359
1360         if (err < 0)
1361                 return err;
1362
1363         value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1364
1365         return sprintf(buf, "%d\n", value);
1366 }
1367
1368 /* Fan1 */
1369 static DEVICE_ATTR_RW(pwm1);
1370 static DEVICE_ATTR_RW(pwm1_enable);
1371 static DEVICE_ATTR_RO(fan1_input);
1372 static DEVICE_ATTR_RO(fan1_label);
1373
1374 /* Temperature */
1375 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1376
1377 static struct attribute *hwmon_attributes[] = {
1378         &dev_attr_pwm1.attr,
1379         &dev_attr_pwm1_enable.attr,
1380         &dev_attr_fan1_input.attr,
1381         &dev_attr_fan1_label.attr,
1382
1383         &dev_attr_temp1_input.attr,
1384         NULL
1385 };
1386
1387 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1388                                           struct attribute *attr, int idx)
1389 {
1390         struct device *dev = container_of(kobj, struct device, kobj);
1391         struct platform_device *pdev = to_platform_device(dev->parent);
1392         struct asus_wmi *asus = platform_get_drvdata(pdev);
1393         int dev_id = -1;
1394         int fan_attr = -1;
1395         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1396         bool ok = true;
1397
1398         if (attr == &dev_attr_pwm1.attr)
1399                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1400         else if (attr == &dev_attr_temp1_input.attr)
1401                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1402
1403
1404         if (attr == &dev_attr_fan1_input.attr
1405             || attr == &dev_attr_fan1_label.attr
1406             || attr == &dev_attr_pwm1.attr
1407             || attr == &dev_attr_pwm1_enable.attr) {
1408                 fan_attr = 1;
1409         }
1410
1411         if (dev_id != -1) {
1412                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1413
1414                 if (err < 0 && fan_attr == -1)
1415                         return 0; /* can't return negative here */
1416         }
1417
1418         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1419                 /*
1420                  * We need to find a better way, probably using sfun,
1421                  * bits or spec ...
1422                  * Currently we disable it if:
1423                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1424                  * - reverved bits are non-zero
1425                  * - sfun and presence bit are not set
1426                  */
1427                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1428                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1429                         ok = false;
1430                 else
1431                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1432         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1433                 /* If value is zero, something is clearly wrong */
1434                 if (!value)
1435                         ok = false;
1436         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1437                 ok = true;
1438         } else {
1439                 ok = false;
1440         }
1441
1442         return ok ? attr->mode : 0;
1443 }
1444
1445 static const struct attribute_group hwmon_attribute_group = {
1446         .is_visible = asus_hwmon_sysfs_is_visible,
1447         .attrs = hwmon_attributes
1448 };
1449 __ATTRIBUTE_GROUPS(hwmon_attribute);
1450
1451 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1452 {
1453         struct device *hwmon;
1454
1455         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1456                                                   "asus", asus,
1457                                                   hwmon_attribute_groups);
1458         if (IS_ERR(hwmon)) {
1459                 pr_err("Could not register asus hwmon device\n");
1460                 return PTR_ERR(hwmon);
1461         }
1462         return 0;
1463 }
1464
1465 /*
1466  * Backlight
1467  */
1468 static int read_backlight_power(struct asus_wmi *asus)
1469 {
1470         int ret;
1471         if (asus->driver->quirks->store_backlight_power)
1472                 ret = !asus->driver->panel_power;
1473         else
1474                 ret = asus_wmi_get_devstate_simple(asus,
1475                                                    ASUS_WMI_DEVID_BACKLIGHT);
1476
1477         if (ret < 0)
1478                 return ret;
1479
1480         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1481 }
1482
1483 static int read_brightness_max(struct asus_wmi *asus)
1484 {
1485         u32 retval;
1486         int err;
1487
1488         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1489
1490         if (err < 0)
1491                 return err;
1492
1493         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1494         retval >>= 8;
1495
1496         if (!retval)
1497                 return -ENODEV;
1498
1499         return retval;
1500 }
1501
1502 static int read_brightness(struct backlight_device *bd)
1503 {
1504         struct asus_wmi *asus = bl_get_data(bd);
1505         u32 retval;
1506         int err;
1507
1508         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1509
1510         if (err < 0)
1511                 return err;
1512
1513         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1514 }
1515
1516 static u32 get_scalar_command(struct backlight_device *bd)
1517 {
1518         struct asus_wmi *asus = bl_get_data(bd);
1519         u32 ctrl_param = 0;
1520
1521         if ((asus->driver->brightness < bd->props.brightness) ||
1522             bd->props.brightness == bd->props.max_brightness)
1523                 ctrl_param = 0x00008001;
1524         else if ((asus->driver->brightness > bd->props.brightness) ||
1525                  bd->props.brightness == 0)
1526                 ctrl_param = 0x00008000;
1527
1528         asus->driver->brightness = bd->props.brightness;
1529
1530         return ctrl_param;
1531 }
1532
1533 static int update_bl_status(struct backlight_device *bd)
1534 {
1535         struct asus_wmi *asus = bl_get_data(bd);
1536         u32 ctrl_param;
1537         int power, err = 0;
1538
1539         power = read_backlight_power(asus);
1540         if (power != -ENODEV && bd->props.power != power) {
1541                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1542                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1543                                             ctrl_param, NULL);
1544                 if (asus->driver->quirks->store_backlight_power)
1545                         asus->driver->panel_power = bd->props.power;
1546
1547                 /* When using scalar brightness, updating the brightness
1548                  * will mess with the backlight power */
1549                 if (asus->driver->quirks->scalar_panel_brightness)
1550                         return err;
1551         }
1552
1553         if (asus->driver->quirks->scalar_panel_brightness)
1554                 ctrl_param = get_scalar_command(bd);
1555         else
1556                 ctrl_param = bd->props.brightness;
1557
1558         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1559                                     ctrl_param, NULL);
1560
1561         return err;
1562 }
1563
1564 static const struct backlight_ops asus_wmi_bl_ops = {
1565         .get_brightness = read_brightness,
1566         .update_status = update_bl_status,
1567 };
1568
1569 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1570 {
1571         struct backlight_device *bd = asus->backlight_device;
1572         int old = bd->props.brightness;
1573         int new = old;
1574
1575         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1576                 new = code - NOTIFY_BRNUP_MIN + 1;
1577         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1578                 new = code - NOTIFY_BRNDOWN_MIN;
1579
1580         bd->props.brightness = new;
1581         backlight_update_status(bd);
1582         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1583
1584         return old;
1585 }
1586
1587 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1588 {
1589         struct backlight_device *bd;
1590         struct backlight_properties props;
1591         int max;
1592         int power;
1593
1594         max = read_brightness_max(asus);
1595         if (max < 0)
1596                 return max;
1597
1598         power = read_backlight_power(asus);
1599
1600         if (power == -ENODEV)
1601                 power = FB_BLANK_UNBLANK;
1602         else if (power < 0)
1603                 return power;
1604
1605         memset(&props, 0, sizeof(struct backlight_properties));
1606         props.type = BACKLIGHT_PLATFORM;
1607         props.max_brightness = max;
1608         bd = backlight_device_register(asus->driver->name,
1609                                        &asus->platform_device->dev, asus,
1610                                        &asus_wmi_bl_ops, &props);
1611         if (IS_ERR(bd)) {
1612                 pr_err("Could not register backlight device\n");
1613                 return PTR_ERR(bd);
1614         }
1615
1616         asus->backlight_device = bd;
1617
1618         if (asus->driver->quirks->store_backlight_power)
1619                 asus->driver->panel_power = power;
1620
1621         bd->props.brightness = read_brightness(bd);
1622         bd->props.power = power;
1623         backlight_update_status(bd);
1624
1625         asus->driver->brightness = bd->props.brightness;
1626
1627         return 0;
1628 }
1629
1630 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1631 {
1632         backlight_device_unregister(asus->backlight_device);
1633
1634         asus->backlight_device = NULL;
1635 }
1636
1637 static int is_display_toggle(int code)
1638 {
1639         /* display toggle keys */
1640         if ((code >= 0x61 && code <= 0x67) ||
1641             (code >= 0x8c && code <= 0x93) ||
1642             (code >= 0xa0 && code <= 0xa7) ||
1643             (code >= 0xd0 && code <= 0xd5))
1644                 return 1;
1645
1646         return 0;
1647 }
1648
1649 static void asus_wmi_notify(u32 value, void *context)
1650 {
1651         struct asus_wmi *asus = context;
1652         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1653         union acpi_object *obj;
1654         acpi_status status;
1655         int code;
1656         int orig_code;
1657         unsigned int key_value = 1;
1658         bool autorelease = 1;
1659
1660         status = wmi_get_event_data(value, &response);
1661         if (status != AE_OK) {
1662                 pr_err("bad event status 0x%x\n", status);
1663                 return;
1664         }
1665
1666         obj = (union acpi_object *)response.pointer;
1667
1668         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1669                 goto exit;
1670
1671         code = obj->integer.value;
1672         orig_code = code;
1673
1674         if (asus->driver->key_filter) {
1675                 asus->driver->key_filter(asus->driver, &code, &key_value,
1676                                          &autorelease);
1677                 if (code == ASUS_WMI_KEY_IGNORE)
1678                         goto exit;
1679         }
1680
1681         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1682                 code = ASUS_WMI_BRN_UP;
1683         else if (code >= NOTIFY_BRNDOWN_MIN &&
1684                  code <= NOTIFY_BRNDOWN_MAX)
1685                 code = ASUS_WMI_BRN_DOWN;
1686
1687         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1688                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1689                         asus_wmi_backlight_notify(asus, orig_code);
1690                         goto exit;
1691                 }
1692         }
1693
1694         if (is_display_toggle(code) &&
1695             asus->driver->quirks->no_display_toggle)
1696                 goto exit;
1697
1698         if (!sparse_keymap_report_event(asus->inputdev, code,
1699                                         key_value, autorelease))
1700                 pr_info("Unknown key %x pressed\n", code);
1701
1702 exit:
1703         kfree(obj);
1704 }
1705
1706 /*
1707  * Sys helpers
1708  */
1709 static int parse_arg(const char *buf, unsigned long count, int *val)
1710 {
1711         if (!count)
1712                 return 0;
1713         if (sscanf(buf, "%i", val) != 1)
1714                 return -EINVAL;
1715         return count;
1716 }
1717
1718 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1719                              const char *buf, size_t count)
1720 {
1721         u32 retval;
1722         int rv, err, value;
1723
1724         value = asus_wmi_get_devstate_simple(asus, devid);
1725         if (value < 0)
1726                 return value;
1727
1728         rv = parse_arg(buf, count, &value);
1729         err = asus_wmi_set_devstate(devid, value, &retval);
1730
1731         if (err < 0)
1732                 return err;
1733
1734         return rv;
1735 }
1736
1737 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1738 {
1739         int value = asus_wmi_get_devstate_simple(asus, devid);
1740
1741         if (value < 0)
1742                 return value;
1743
1744         return sprintf(buf, "%d\n", value);
1745 }
1746
1747 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1748         static ssize_t show_##_name(struct device *dev,                 \
1749                                     struct device_attribute *attr,      \
1750                                     char *buf)                          \
1751         {                                                               \
1752                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1753                                                                         \
1754                 return show_sys_wmi(asus, _cm, buf);                    \
1755         }                                                               \
1756         static ssize_t store_##_name(struct device *dev,                \
1757                                      struct device_attribute *attr,     \
1758                                      const char *buf, size_t count)     \
1759         {                                                               \
1760                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1761                                                                         \
1762                 return store_sys_wmi(asus, _cm, buf, count);            \
1763         }                                                               \
1764         static struct device_attribute dev_attr_##_name = {             \
1765                 .attr = {                                               \
1766                         .name = __stringify(_name),                     \
1767                         .mode = _mode },                                \
1768                 .show   = show_##_name,                                 \
1769                 .store  = store_##_name,                                \
1770         }
1771
1772 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1773 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1774 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1775 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1776 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1777
1778 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1779                            const char *buf, size_t count)
1780 {
1781         int value, rv;
1782
1783         if (!count || sscanf(buf, "%i", &value) != 1)
1784                 return -EINVAL;
1785         if (value < 0 || value > 2)
1786                 return -EINVAL;
1787
1788         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1789         if (rv < 0)
1790                 return rv;
1791
1792         return count;
1793 }
1794
1795 static DEVICE_ATTR_WO(cpufv);
1796
1797 static struct attribute *platform_attributes[] = {
1798         &dev_attr_cpufv.attr,
1799         &dev_attr_camera.attr,
1800         &dev_attr_cardr.attr,
1801         &dev_attr_touchpad.attr,
1802         &dev_attr_lid_resume.attr,
1803         &dev_attr_als_enable.attr,
1804         NULL
1805 };
1806
1807 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1808                                     struct attribute *attr, int idx)
1809 {
1810         struct device *dev = container_of(kobj, struct device, kobj);
1811         struct platform_device *pdev = to_platform_device(dev);
1812         struct asus_wmi *asus = platform_get_drvdata(pdev);
1813         bool ok = true;
1814         int devid = -1;
1815
1816         if (attr == &dev_attr_camera.attr)
1817                 devid = ASUS_WMI_DEVID_CAMERA;
1818         else if (attr == &dev_attr_cardr.attr)
1819                 devid = ASUS_WMI_DEVID_CARDREADER;
1820         else if (attr == &dev_attr_touchpad.attr)
1821                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1822         else if (attr == &dev_attr_lid_resume.attr)
1823                 devid = ASUS_WMI_DEVID_LID_RESUME;
1824         else if (attr == &dev_attr_als_enable.attr)
1825                 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1826
1827         if (devid != -1)
1828                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1829
1830         return ok ? attr->mode : 0;
1831 }
1832
1833 static const struct attribute_group platform_attribute_group = {
1834         .is_visible = asus_sysfs_is_visible,
1835         .attrs = platform_attributes
1836 };
1837
1838 static void asus_wmi_sysfs_exit(struct platform_device *device)
1839 {
1840         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1841 }
1842
1843 static int asus_wmi_sysfs_init(struct platform_device *device)
1844 {
1845         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1846 }
1847
1848 /*
1849  * Platform device
1850  */
1851 static int asus_wmi_platform_init(struct asus_wmi *asus)
1852 {
1853         int rv;
1854
1855         /* INIT enable hotkeys on some models */
1856         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1857                 pr_info("Initialization: %#x\n", rv);
1858
1859         /* We don't know yet what to do with this version... */
1860         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1861                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1862                 asus->spec = rv;
1863         }
1864
1865         /*
1866          * The SFUN method probably allows the original driver to get the list
1867          * of features supported by a given model. For now, 0x0100 or 0x0800
1868          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1869          * The significance of others is yet to be found.
1870          */
1871         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1872                 pr_info("SFUN value: %#x\n", rv);
1873                 asus->sfun = rv;
1874         }
1875
1876         /*
1877          * Eee PC and Notebooks seems to have different method_id for DSTS,
1878          * but it may also be related to the BIOS's SPEC.
1879          * Note, on most Eeepc, there is no way to check if a method exist
1880          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1881          * but once again, SPEC may probably be used for that kind of things.
1882          */
1883         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1884                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1885         else
1886                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1887
1888         /* CWAP allow to define the behavior of the Fn+F2 key,
1889          * this method doesn't seems to be present on Eee PCs */
1890         if (asus->driver->quirks->wapf >= 0)
1891                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1892                                       asus->driver->quirks->wapf, NULL);
1893
1894         return asus_wmi_sysfs_init(asus->platform_device);
1895 }
1896
1897 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1898 {
1899         asus_wmi_sysfs_exit(asus->platform_device);
1900 }
1901
1902 /*
1903  * debugfs
1904  */
1905 struct asus_wmi_debugfs_node {
1906         struct asus_wmi *asus;
1907         char *name;
1908         int (*show) (struct seq_file *m, void *data);
1909 };
1910
1911 static int show_dsts(struct seq_file *m, void *data)
1912 {
1913         struct asus_wmi *asus = m->private;
1914         int err;
1915         u32 retval = -1;
1916
1917         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1918
1919         if (err < 0)
1920                 return err;
1921
1922         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1923
1924         return 0;
1925 }
1926
1927 static int show_devs(struct seq_file *m, void *data)
1928 {
1929         struct asus_wmi *asus = m->private;
1930         int err;
1931         u32 retval = -1;
1932
1933         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1934                                     &retval);
1935
1936         if (err < 0)
1937                 return err;
1938
1939         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1940                    asus->debug.ctrl_param, retval);
1941
1942         return 0;
1943 }
1944
1945 static int show_call(struct seq_file *m, void *data)
1946 {
1947         struct asus_wmi *asus = m->private;
1948         struct bios_args args = {
1949                 .arg0 = asus->debug.dev_id,
1950                 .arg1 = asus->debug.ctrl_param,
1951         };
1952         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1953         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1954         union acpi_object *obj;
1955         acpi_status status;
1956
1957         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1958                                      0, asus->debug.method_id,
1959                                      &input, &output);
1960
1961         if (ACPI_FAILURE(status))
1962                 return -EIO;
1963
1964         obj = (union acpi_object *)output.pointer;
1965         if (obj && obj->type == ACPI_TYPE_INTEGER)
1966                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1967                            asus->debug.dev_id, asus->debug.ctrl_param,
1968                            (u32) obj->integer.value);
1969         else
1970                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1971                            asus->debug.dev_id, asus->debug.ctrl_param,
1972                            obj ? obj->type : -1);
1973
1974         kfree(obj);
1975
1976         return 0;
1977 }
1978
1979 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1980         {NULL, "devs", show_devs},
1981         {NULL, "dsts", show_dsts},
1982         {NULL, "call", show_call},
1983 };
1984
1985 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1986 {
1987         struct asus_wmi_debugfs_node *node = inode->i_private;
1988
1989         return single_open(file, node->show, node->asus);
1990 }
1991
1992 static const struct file_operations asus_wmi_debugfs_io_ops = {
1993         .owner = THIS_MODULE,
1994         .open = asus_wmi_debugfs_open,
1995         .read = seq_read,
1996         .llseek = seq_lseek,
1997         .release = single_release,
1998 };
1999
2000 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2001 {
2002         debugfs_remove_recursive(asus->debug.root);
2003 }
2004
2005 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2006 {
2007         struct dentry *dent;
2008         int i;
2009
2010         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2011         if (!asus->debug.root) {
2012                 pr_err("failed to create debugfs directory\n");
2013                 goto error_debugfs;
2014         }
2015
2016         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2017                                   asus->debug.root, &asus->debug.method_id);
2018         if (!dent)
2019                 goto error_debugfs;
2020
2021         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2022                                   asus->debug.root, &asus->debug.dev_id);
2023         if (!dent)
2024                 goto error_debugfs;
2025
2026         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2027                                   asus->debug.root, &asus->debug.ctrl_param);
2028         if (!dent)
2029                 goto error_debugfs;
2030
2031         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2032                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2033
2034                 node->asus = asus;
2035                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2036                                            asus->debug.root, node,
2037                                            &asus_wmi_debugfs_io_ops);
2038                 if (!dent) {
2039                         pr_err("failed to create debug file: %s\n", node->name);
2040                         goto error_debugfs;
2041                 }
2042         }
2043
2044         return 0;
2045
2046 error_debugfs:
2047         asus_wmi_debugfs_exit(asus);
2048         return -ENOMEM;
2049 }
2050
2051 static int asus_wmi_fan_init(struct asus_wmi *asus)
2052 {
2053         int status;
2054
2055         asus->asus_hwmon_pwm = -1;
2056         asus->asus_hwmon_num_fans = -1;
2057         asus->asus_hwmon_fan_manual_mode = false;
2058
2059         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2060         if (status) {
2061                 asus->asus_hwmon_num_fans = 0;
2062                 pr_warn("Could not determine number of fans: %d\n", status);
2063                 return -ENXIO;
2064         }
2065
2066         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2067         return 0;
2068 }
2069
2070 /*
2071  * WMI Driver
2072  */
2073 static int asus_wmi_add(struct platform_device *pdev)
2074 {
2075         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2076         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2077         struct asus_wmi *asus;
2078         const char *chassis_type;
2079         acpi_status status;
2080         int err;
2081         u32 result;
2082
2083         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2084         if (!asus)
2085                 return -ENOMEM;
2086
2087         asus->driver = wdrv;
2088         asus->platform_device = pdev;
2089         wdrv->platform_device = pdev;
2090         platform_set_drvdata(asus->platform_device, asus);
2091
2092         if (wdrv->detect_quirks)
2093                 wdrv->detect_quirks(asus->driver);
2094
2095         err = asus_wmi_platform_init(asus);
2096         if (err)
2097                 goto fail_platform;
2098
2099         err = asus_wmi_input_init(asus);
2100         if (err)
2101                 goto fail_input;
2102
2103         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2104         asus_hwmon_fan_set_auto(asus);
2105
2106         err = asus_wmi_hwmon_init(asus);
2107         if (err)
2108                 goto fail_hwmon;
2109
2110         err = asus_wmi_led_init(asus);
2111         if (err)
2112                 goto fail_leds;
2113
2114         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2115         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2116                 asus->driver->wlan_ctrl_by_user = 1;
2117
2118         if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2119                 err = asus_wmi_rfkill_init(asus);
2120                 if (err)
2121                         goto fail_rfkill;
2122         }
2123
2124         if (asus->driver->quirks->wmi_force_als_set)
2125                 asus_wmi_set_als();
2126
2127         /* Some Asus desktop boards export an acpi-video backlight interface,
2128            stop this from showing up */
2129         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2130         if (chassis_type && !strcmp(chassis_type, "3"))
2131                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2132
2133         if (asus->driver->quirks->wmi_backlight_power)
2134                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2135
2136         if (asus->driver->quirks->wmi_backlight_native)
2137                 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2138
2139         if (asus->driver->quirks->xusb2pr)
2140                 asus_wmi_set_xusb2pr(asus);
2141
2142         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2143                 err = asus_wmi_backlight_init(asus);
2144                 if (err && err != -ENODEV)
2145                         goto fail_backlight;
2146         } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2147                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2148
2149         status = wmi_install_notify_handler(asus->driver->event_guid,
2150                                             asus_wmi_notify, asus);
2151         if (ACPI_FAILURE(status)) {
2152                 pr_err("Unable to register notify handler - %d\n", status);
2153                 err = -ENODEV;
2154                 goto fail_wmi_handler;
2155         }
2156
2157         err = asus_wmi_debugfs_init(asus);
2158         if (err)
2159                 goto fail_debugfs;
2160
2161         return 0;
2162
2163 fail_debugfs:
2164         wmi_remove_notify_handler(asus->driver->event_guid);
2165 fail_wmi_handler:
2166         asus_wmi_backlight_exit(asus);
2167 fail_backlight:
2168         asus_wmi_rfkill_exit(asus);
2169 fail_rfkill:
2170         asus_wmi_led_exit(asus);
2171 fail_leds:
2172 fail_hwmon:
2173         asus_wmi_input_exit(asus);
2174 fail_input:
2175         asus_wmi_platform_exit(asus);
2176 fail_platform:
2177         kfree(asus);
2178         return err;
2179 }
2180
2181 static int asus_wmi_remove(struct platform_device *device)
2182 {
2183         struct asus_wmi *asus;
2184
2185         asus = platform_get_drvdata(device);
2186         wmi_remove_notify_handler(asus->driver->event_guid);
2187         asus_wmi_backlight_exit(asus);
2188         asus_wmi_input_exit(asus);
2189         asus_wmi_led_exit(asus);
2190         asus_wmi_rfkill_exit(asus);
2191         asus_wmi_debugfs_exit(asus);
2192         asus_wmi_platform_exit(asus);
2193         asus_hwmon_fan_set_auto(asus);
2194
2195         kfree(asus);
2196         return 0;
2197 }
2198
2199 /*
2200  * Platform driver - hibernate/resume callbacks
2201  */
2202 static int asus_hotk_thaw(struct device *device)
2203 {
2204         struct asus_wmi *asus = dev_get_drvdata(device);
2205
2206         if (asus->wlan.rfkill) {
2207                 bool wlan;
2208
2209                 /*
2210                  * Work around bios bug - acpi _PTS turns off the wireless led
2211                  * during suspend.  Normally it restores it on resume, but
2212                  * we should kick it ourselves in case hibernation is aborted.
2213                  */
2214                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2215                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2216         }
2217
2218         return 0;
2219 }
2220
2221 static int asus_hotk_resume(struct device *device)
2222 {
2223         struct asus_wmi *asus = dev_get_drvdata(device);
2224
2225         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2226                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2227
2228         return 0;
2229 }
2230
2231 static int asus_hotk_restore(struct device *device)
2232 {
2233         struct asus_wmi *asus = dev_get_drvdata(device);
2234         int bl;
2235
2236         /* Refresh both wlan rfkill state and pci hotplug */
2237         if (asus->wlan.rfkill)
2238                 asus_rfkill_hotplug(asus);
2239
2240         if (asus->bluetooth.rfkill) {
2241                 bl = !asus_wmi_get_devstate_simple(asus,
2242                                                    ASUS_WMI_DEVID_BLUETOOTH);
2243                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2244         }
2245         if (asus->wimax.rfkill) {
2246                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2247                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2248         }
2249         if (asus->wwan3g.rfkill) {
2250                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2251                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2252         }
2253         if (asus->gps.rfkill) {
2254                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2255                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2256         }
2257         if (asus->uwb.rfkill) {
2258                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2259                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2260         }
2261         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2262                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2263
2264         return 0;
2265 }
2266
2267 static const struct dev_pm_ops asus_pm_ops = {
2268         .thaw = asus_hotk_thaw,
2269         .restore = asus_hotk_restore,
2270         .resume = asus_hotk_resume,
2271 };
2272
2273 static int asus_wmi_probe(struct platform_device *pdev)
2274 {
2275         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2276         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2277         int ret;
2278
2279         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2280                 pr_warn("Management GUID not found\n");
2281                 return -ENODEV;
2282         }
2283
2284         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2285                 pr_warn("Event GUID not found\n");
2286                 return -ENODEV;
2287         }
2288
2289         if (wdrv->probe) {
2290                 ret = wdrv->probe(pdev);
2291                 if (ret)
2292                         return ret;
2293         }
2294
2295         return asus_wmi_add(pdev);
2296 }
2297
2298 static bool used;
2299
2300 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2301 {
2302         struct platform_driver *platform_driver;
2303         struct platform_device *platform_device;
2304
2305         if (used)
2306                 return -EBUSY;
2307
2308         platform_driver = &driver->platform_driver;
2309         platform_driver->remove = asus_wmi_remove;
2310         platform_driver->driver.owner = driver->owner;
2311         platform_driver->driver.name = driver->name;
2312         platform_driver->driver.pm = &asus_pm_ops;
2313
2314         platform_device = platform_create_bundle(platform_driver,
2315                                                  asus_wmi_probe,
2316                                                  NULL, 0, NULL, 0);
2317         if (IS_ERR(platform_device))
2318                 return PTR_ERR(platform_device);
2319
2320         used = true;
2321         return 0;
2322 }
2323 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2324
2325 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2326 {
2327         platform_device_unregister(driver->platform_device);
2328         platform_driver_unregister(&driver->platform_driver);
2329         used = false;
2330 }
2331 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2332
2333 static int __init asus_wmi_init(void)
2334 {
2335         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2336                 pr_info("Asus Management GUID not found\n");
2337                 return -ENODEV;
2338         }
2339
2340         pr_info("ASUS WMI generic driver loaded\n");
2341         return 0;
2342 }
2343
2344 static void __exit asus_wmi_exit(void)
2345 {
2346         pr_info("ASUS WMI generic driver unloaded\n");
2347 }
2348
2349 module_init(asus_wmi_init);
2350 module_exit(asus_wmi_exit);