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         pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1111                         orig_ports_available, ports_available);
1112 }
1113
1114 /*
1115  * Some devices dont support or have borcken get_als method
1116  * but still support set method.
1117  */
1118 static void asus_wmi_set_als(void)
1119 {
1120         asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1121 }
1122
1123 /*
1124  * Hwmon device
1125  */
1126 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1127                                           int *speed)
1128 {
1129         struct fan_args args = {
1130                 .agfn.len = sizeof(args),
1131                 .agfn.mfun = ASUS_FAN_MFUN,
1132                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1133                 .fan = fan,
1134                 .speed = 0,
1135         };
1136         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1137         int status;
1138
1139         if (fan != 1)
1140                 return -EINVAL;
1141
1142         status = asus_wmi_evaluate_method_agfn(input);
1143
1144         if (status || args.agfn.err)
1145                 return -ENXIO;
1146
1147         if (speed)
1148                 *speed = args.speed;
1149
1150         return 0;
1151 }
1152
1153 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1154                                      int *speed)
1155 {
1156         struct fan_args args = {
1157                 .agfn.len = sizeof(args),
1158                 .agfn.mfun = ASUS_FAN_MFUN,
1159                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1160                 .fan = fan,
1161                 .speed = speed ?  *speed : 0,
1162         };
1163         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1164         int status;
1165
1166         /* 1: for setting 1st fan's speed 0: setting auto mode */
1167         if (fan != 1 && fan != 0)
1168                 return -EINVAL;
1169
1170         status = asus_wmi_evaluate_method_agfn(input);
1171
1172         if (status || args.agfn.err)
1173                 return -ENXIO;
1174
1175         if (speed && fan == 1)
1176                 asus->asus_hwmon_pwm = *speed;
1177
1178         return 0;
1179 }
1180
1181 /*
1182  * Check if we can read the speed of one fan. If true we assume we can also
1183  * control it.
1184  */
1185 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1186 {
1187         int status;
1188         int speed = 0;
1189
1190         *num_fans = 0;
1191
1192         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1193         if (!status)
1194                 *num_fans = 1;
1195
1196         return 0;
1197 }
1198
1199 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1200 {
1201         int status;
1202
1203         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1204         if (status)
1205                 return -ENXIO;
1206
1207         asus->asus_hwmon_fan_manual_mode = false;
1208
1209         return 0;
1210 }
1211
1212 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1213 {
1214         struct asus_wmi *asus = dev_get_drvdata(dev);
1215         int value;
1216         int ret;
1217
1218         /* no speed readable on manual mode */
1219         if (asus->asus_hwmon_fan_manual_mode)
1220                 return -ENXIO;
1221
1222         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1223         if (ret) {
1224                 pr_warn("reading fan speed failed: %d\n", ret);
1225                 return -ENXIO;
1226         }
1227
1228         return value;
1229 }
1230
1231 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1232 {
1233         int err;
1234
1235         if (asus->asus_hwmon_pwm >= 0) {
1236                 *value = asus->asus_hwmon_pwm;
1237                 return;
1238         }
1239
1240         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1241         if (err < 0)
1242                 return;
1243
1244         *value &= 0xFF;
1245
1246         if (*value == 1) /* Low Speed */
1247                 *value = 85;
1248         else if (*value == 2)
1249                 *value = 170;
1250         else if (*value == 3)
1251                 *value = 255;
1252         else if (*value) {
1253                 pr_err("Unknown fan speed %#x\n", *value);
1254                 *value = -1;
1255         }
1256 }
1257
1258 static ssize_t pwm1_show(struct device *dev,
1259                                struct device_attribute *attr,
1260                                char *buf)
1261 {
1262         struct asus_wmi *asus = dev_get_drvdata(dev);
1263         int value;
1264
1265         asus_hwmon_pwm_show(asus, 0, &value);
1266
1267         return sprintf(buf, "%d\n", value);
1268 }
1269
1270 static ssize_t pwm1_store(struct device *dev,
1271                                      struct device_attribute *attr,
1272                                      const char *buf, size_t count) {
1273         struct asus_wmi *asus = dev_get_drvdata(dev);
1274         int value;
1275         int state;
1276         int ret;
1277
1278         ret = kstrtouint(buf, 10, &value);
1279
1280         if (ret)
1281                 return ret;
1282
1283         value = clamp(value, 0, 255);
1284
1285         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1286         if (state)
1287                 pr_warn("Setting fan speed failed: %d\n", state);
1288         else
1289                 asus->asus_hwmon_fan_manual_mode = true;
1290
1291         return count;
1292 }
1293
1294 static ssize_t fan1_input_show(struct device *dev,
1295                                         struct device_attribute *attr,
1296                                         char *buf)
1297 {
1298         int value = asus_hwmon_fan_rpm_show(dev, 0);
1299
1300         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1301
1302 }
1303
1304 static ssize_t pwm1_enable_show(struct device *dev,
1305                                                  struct device_attribute *attr,
1306                                                  char *buf)
1307 {
1308         struct asus_wmi *asus = dev_get_drvdata(dev);
1309
1310         if (asus->asus_hwmon_fan_manual_mode)
1311                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1312
1313         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1314 }
1315
1316 static ssize_t pwm1_enable_store(struct device *dev,
1317                                                   struct device_attribute *attr,
1318                                                   const char *buf, size_t count)
1319 {
1320         struct asus_wmi *asus = dev_get_drvdata(dev);
1321         int status = 0;
1322         int state;
1323         int ret;
1324
1325         ret = kstrtouint(buf, 10, &state);
1326
1327         if (ret)
1328                 return ret;
1329
1330         if (state == ASUS_FAN_CTRL_MANUAL)
1331                 asus->asus_hwmon_fan_manual_mode = true;
1332         else
1333                 status = asus_hwmon_fan_set_auto(asus);
1334
1335         if (status)
1336                 return status;
1337
1338         return count;
1339 }
1340
1341 static ssize_t fan1_label_show(struct device *dev,
1342                                           struct device_attribute *attr,
1343                                           char *buf)
1344 {
1345         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1346 }
1347
1348 static ssize_t asus_hwmon_temp1(struct device *dev,
1349                                 struct device_attribute *attr,
1350                                 char *buf)
1351 {
1352         struct asus_wmi *asus = dev_get_drvdata(dev);
1353         u32 value;
1354         int err;
1355
1356         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1357
1358         if (err < 0)
1359                 return err;
1360
1361         value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1362
1363         return sprintf(buf, "%d\n", value);
1364 }
1365
1366 /* Fan1 */
1367 static DEVICE_ATTR_RW(pwm1);
1368 static DEVICE_ATTR_RW(pwm1_enable);
1369 static DEVICE_ATTR_RO(fan1_input);
1370 static DEVICE_ATTR_RO(fan1_label);
1371
1372 /* Temperature */
1373 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1374
1375 static struct attribute *hwmon_attributes[] = {
1376         &dev_attr_pwm1.attr,
1377         &dev_attr_pwm1_enable.attr,
1378         &dev_attr_fan1_input.attr,
1379         &dev_attr_fan1_label.attr,
1380
1381         &dev_attr_temp1_input.attr,
1382         NULL
1383 };
1384
1385 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1386                                           struct attribute *attr, int idx)
1387 {
1388         struct device *dev = container_of(kobj, struct device, kobj);
1389         struct platform_device *pdev = to_platform_device(dev->parent);
1390         struct asus_wmi *asus = platform_get_drvdata(pdev);
1391         int dev_id = -1;
1392         int fan_attr = -1;
1393         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1394         bool ok = true;
1395
1396         if (attr == &dev_attr_pwm1.attr)
1397                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1398         else if (attr == &dev_attr_temp1_input.attr)
1399                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1400
1401
1402         if (attr == &dev_attr_fan1_input.attr
1403             || attr == &dev_attr_fan1_label.attr
1404             || attr == &dev_attr_pwm1.attr
1405             || attr == &dev_attr_pwm1_enable.attr) {
1406                 fan_attr = 1;
1407         }
1408
1409         if (dev_id != -1) {
1410                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1411
1412                 if (err < 0 && fan_attr == -1)
1413                         return 0; /* can't return negative here */
1414         }
1415
1416         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1417                 /*
1418                  * We need to find a better way, probably using sfun,
1419                  * bits or spec ...
1420                  * Currently we disable it if:
1421                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1422                  * - reverved bits are non-zero
1423                  * - sfun and presence bit are not set
1424                  */
1425                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1426                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1427                         ok = false;
1428                 else
1429                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1430         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1431                 /* If value is zero, something is clearly wrong */
1432                 if (!value)
1433                         ok = false;
1434         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1435                 ok = true;
1436         } else {
1437                 ok = false;
1438         }
1439
1440         return ok ? attr->mode : 0;
1441 }
1442
1443 static const struct attribute_group hwmon_attribute_group = {
1444         .is_visible = asus_hwmon_sysfs_is_visible,
1445         .attrs = hwmon_attributes
1446 };
1447 __ATTRIBUTE_GROUPS(hwmon_attribute);
1448
1449 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1450 {
1451         struct device *hwmon;
1452
1453         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1454                                                   "asus", asus,
1455                                                   hwmon_attribute_groups);
1456         if (IS_ERR(hwmon)) {
1457                 pr_err("Could not register asus hwmon device\n");
1458                 return PTR_ERR(hwmon);
1459         }
1460         return 0;
1461 }
1462
1463 /*
1464  * Backlight
1465  */
1466 static int read_backlight_power(struct asus_wmi *asus)
1467 {
1468         int ret;
1469         if (asus->driver->quirks->store_backlight_power)
1470                 ret = !asus->driver->panel_power;
1471         else
1472                 ret = asus_wmi_get_devstate_simple(asus,
1473                                                    ASUS_WMI_DEVID_BACKLIGHT);
1474
1475         if (ret < 0)
1476                 return ret;
1477
1478         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1479 }
1480
1481 static int read_brightness_max(struct asus_wmi *asus)
1482 {
1483         u32 retval;
1484         int err;
1485
1486         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1487
1488         if (err < 0)
1489                 return err;
1490
1491         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1492         retval >>= 8;
1493
1494         if (!retval)
1495                 return -ENODEV;
1496
1497         return retval;
1498 }
1499
1500 static int read_brightness(struct backlight_device *bd)
1501 {
1502         struct asus_wmi *asus = bl_get_data(bd);
1503         u32 retval;
1504         int err;
1505
1506         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1507
1508         if (err < 0)
1509                 return err;
1510
1511         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1512 }
1513
1514 static u32 get_scalar_command(struct backlight_device *bd)
1515 {
1516         struct asus_wmi *asus = bl_get_data(bd);
1517         u32 ctrl_param = 0;
1518
1519         if ((asus->driver->brightness < bd->props.brightness) ||
1520             bd->props.brightness == bd->props.max_brightness)
1521                 ctrl_param = 0x00008001;
1522         else if ((asus->driver->brightness > bd->props.brightness) ||
1523                  bd->props.brightness == 0)
1524                 ctrl_param = 0x00008000;
1525
1526         asus->driver->brightness = bd->props.brightness;
1527
1528         return ctrl_param;
1529 }
1530
1531 static int update_bl_status(struct backlight_device *bd)
1532 {
1533         struct asus_wmi *asus = bl_get_data(bd);
1534         u32 ctrl_param;
1535         int power, err = 0;
1536
1537         power = read_backlight_power(asus);
1538         if (power != -ENODEV && bd->props.power != power) {
1539                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1540                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1541                                             ctrl_param, NULL);
1542                 if (asus->driver->quirks->store_backlight_power)
1543                         asus->driver->panel_power = bd->props.power;
1544
1545                 /* When using scalar brightness, updating the brightness
1546                  * will mess with the backlight power */
1547                 if (asus->driver->quirks->scalar_panel_brightness)
1548                         return err;
1549         }
1550
1551         if (asus->driver->quirks->scalar_panel_brightness)
1552                 ctrl_param = get_scalar_command(bd);
1553         else
1554                 ctrl_param = bd->props.brightness;
1555
1556         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1557                                     ctrl_param, NULL);
1558
1559         return err;
1560 }
1561
1562 static const struct backlight_ops asus_wmi_bl_ops = {
1563         .get_brightness = read_brightness,
1564         .update_status = update_bl_status,
1565 };
1566
1567 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1568 {
1569         struct backlight_device *bd = asus->backlight_device;
1570         int old = bd->props.brightness;
1571         int new = old;
1572
1573         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1574                 new = code - NOTIFY_BRNUP_MIN + 1;
1575         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1576                 new = code - NOTIFY_BRNDOWN_MIN;
1577
1578         bd->props.brightness = new;
1579         backlight_update_status(bd);
1580         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1581
1582         return old;
1583 }
1584
1585 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1586 {
1587         struct backlight_device *bd;
1588         struct backlight_properties props;
1589         int max;
1590         int power;
1591
1592         max = read_brightness_max(asus);
1593         if (max < 0)
1594                 return max;
1595
1596         power = read_backlight_power(asus);
1597
1598         if (power == -ENODEV)
1599                 power = FB_BLANK_UNBLANK;
1600         else if (power < 0)
1601                 return power;
1602
1603         memset(&props, 0, sizeof(struct backlight_properties));
1604         props.type = BACKLIGHT_PLATFORM;
1605         props.max_brightness = max;
1606         bd = backlight_device_register(asus->driver->name,
1607                                        &asus->platform_device->dev, asus,
1608                                        &asus_wmi_bl_ops, &props);
1609         if (IS_ERR(bd)) {
1610                 pr_err("Could not register backlight device\n");
1611                 return PTR_ERR(bd);
1612         }
1613
1614         asus->backlight_device = bd;
1615
1616         if (asus->driver->quirks->store_backlight_power)
1617                 asus->driver->panel_power = power;
1618
1619         bd->props.brightness = read_brightness(bd);
1620         bd->props.power = power;
1621         backlight_update_status(bd);
1622
1623         asus->driver->brightness = bd->props.brightness;
1624
1625         return 0;
1626 }
1627
1628 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1629 {
1630         backlight_device_unregister(asus->backlight_device);
1631
1632         asus->backlight_device = NULL;
1633 }
1634
1635 static int is_display_toggle(int code)
1636 {
1637         /* display toggle keys */
1638         if ((code >= 0x61 && code <= 0x67) ||
1639             (code >= 0x8c && code <= 0x93) ||
1640             (code >= 0xa0 && code <= 0xa7) ||
1641             (code >= 0xd0 && code <= 0xd5))
1642                 return 1;
1643
1644         return 0;
1645 }
1646
1647 static void asus_wmi_notify(u32 value, void *context)
1648 {
1649         struct asus_wmi *asus = context;
1650         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1651         union acpi_object *obj;
1652         acpi_status status;
1653         int code;
1654         int orig_code;
1655         unsigned int key_value = 1;
1656         bool autorelease = 1;
1657
1658         status = wmi_get_event_data(value, &response);
1659         if (status != AE_OK) {
1660                 pr_err("bad event status 0x%x\n", status);
1661                 return;
1662         }
1663
1664         obj = (union acpi_object *)response.pointer;
1665
1666         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1667                 goto exit;
1668
1669         code = obj->integer.value;
1670         orig_code = code;
1671
1672         if (asus->driver->key_filter) {
1673                 asus->driver->key_filter(asus->driver, &code, &key_value,
1674                                          &autorelease);
1675                 if (code == ASUS_WMI_KEY_IGNORE)
1676                         goto exit;
1677         }
1678
1679         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1680                 code = ASUS_WMI_BRN_UP;
1681         else if (code >= NOTIFY_BRNDOWN_MIN &&
1682                  code <= NOTIFY_BRNDOWN_MAX)
1683                 code = ASUS_WMI_BRN_DOWN;
1684
1685         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1686                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1687                         asus_wmi_backlight_notify(asus, orig_code);
1688                         goto exit;
1689                 }
1690         }
1691
1692         if (is_display_toggle(code) &&
1693             asus->driver->quirks->no_display_toggle)
1694                 goto exit;
1695
1696         if (!sparse_keymap_report_event(asus->inputdev, code,
1697                                         key_value, autorelease))
1698                 pr_info("Unknown key %x pressed\n", code);
1699
1700 exit:
1701         kfree(obj);
1702 }
1703
1704 /*
1705  * Sys helpers
1706  */
1707 static int parse_arg(const char *buf, unsigned long count, int *val)
1708 {
1709         if (!count)
1710                 return 0;
1711         if (sscanf(buf, "%i", val) != 1)
1712                 return -EINVAL;
1713         return count;
1714 }
1715
1716 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1717                              const char *buf, size_t count)
1718 {
1719         u32 retval;
1720         int rv, err, value;
1721
1722         value = asus_wmi_get_devstate_simple(asus, devid);
1723         if (value < 0)
1724                 return value;
1725
1726         rv = parse_arg(buf, count, &value);
1727         err = asus_wmi_set_devstate(devid, value, &retval);
1728
1729         if (err < 0)
1730                 return err;
1731
1732         return rv;
1733 }
1734
1735 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1736 {
1737         int value = asus_wmi_get_devstate_simple(asus, devid);
1738
1739         if (value < 0)
1740                 return value;
1741
1742         return sprintf(buf, "%d\n", value);
1743 }
1744
1745 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1746         static ssize_t show_##_name(struct device *dev,                 \
1747                                     struct device_attribute *attr,      \
1748                                     char *buf)                          \
1749         {                                                               \
1750                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1751                                                                         \
1752                 return show_sys_wmi(asus, _cm, buf);                    \
1753         }                                                               \
1754         static ssize_t store_##_name(struct device *dev,                \
1755                                      struct device_attribute *attr,     \
1756                                      const char *buf, size_t count)     \
1757         {                                                               \
1758                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1759                                                                         \
1760                 return store_sys_wmi(asus, _cm, buf, count);            \
1761         }                                                               \
1762         static struct device_attribute dev_attr_##_name = {             \
1763                 .attr = {                                               \
1764                         .name = __stringify(_name),                     \
1765                         .mode = _mode },                                \
1766                 .show   = show_##_name,                                 \
1767                 .store  = store_##_name,                                \
1768         }
1769
1770 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1771 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1772 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1773 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1774 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1775
1776 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1777                            const char *buf, size_t count)
1778 {
1779         int value, rv;
1780
1781         if (!count || sscanf(buf, "%i", &value) != 1)
1782                 return -EINVAL;
1783         if (value < 0 || value > 2)
1784                 return -EINVAL;
1785
1786         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1787         if (rv < 0)
1788                 return rv;
1789
1790         return count;
1791 }
1792
1793 static DEVICE_ATTR_WO(cpufv);
1794
1795 static struct attribute *platform_attributes[] = {
1796         &dev_attr_cpufv.attr,
1797         &dev_attr_camera.attr,
1798         &dev_attr_cardr.attr,
1799         &dev_attr_touchpad.attr,
1800         &dev_attr_lid_resume.attr,
1801         &dev_attr_als_enable.attr,
1802         NULL
1803 };
1804
1805 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1806                                     struct attribute *attr, int idx)
1807 {
1808         struct device *dev = container_of(kobj, struct device, kobj);
1809         struct platform_device *pdev = to_platform_device(dev);
1810         struct asus_wmi *asus = platform_get_drvdata(pdev);
1811         bool ok = true;
1812         int devid = -1;
1813
1814         if (attr == &dev_attr_camera.attr)
1815                 devid = ASUS_WMI_DEVID_CAMERA;
1816         else if (attr == &dev_attr_cardr.attr)
1817                 devid = ASUS_WMI_DEVID_CARDREADER;
1818         else if (attr == &dev_attr_touchpad.attr)
1819                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1820         else if (attr == &dev_attr_lid_resume.attr)
1821                 devid = ASUS_WMI_DEVID_LID_RESUME;
1822         else if (attr == &dev_attr_als_enable.attr)
1823                 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1824
1825         if (devid != -1)
1826                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1827
1828         return ok ? attr->mode : 0;
1829 }
1830
1831 static const struct attribute_group platform_attribute_group = {
1832         .is_visible = asus_sysfs_is_visible,
1833         .attrs = platform_attributes
1834 };
1835
1836 static void asus_wmi_sysfs_exit(struct platform_device *device)
1837 {
1838         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1839 }
1840
1841 static int asus_wmi_sysfs_init(struct platform_device *device)
1842 {
1843         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1844 }
1845
1846 /*
1847  * Platform device
1848  */
1849 static int asus_wmi_platform_init(struct asus_wmi *asus)
1850 {
1851         int rv;
1852
1853         /* INIT enable hotkeys on some models */
1854         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1855                 pr_info("Initialization: %#x\n", rv);
1856
1857         /* We don't know yet what to do with this version... */
1858         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1859                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1860                 asus->spec = rv;
1861         }
1862
1863         /*
1864          * The SFUN method probably allows the original driver to get the list
1865          * of features supported by a given model. For now, 0x0100 or 0x0800
1866          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1867          * The significance of others is yet to be found.
1868          */
1869         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1870                 pr_info("SFUN value: %#x\n", rv);
1871                 asus->sfun = rv;
1872         }
1873
1874         /*
1875          * Eee PC and Notebooks seems to have different method_id for DSTS,
1876          * but it may also be related to the BIOS's SPEC.
1877          * Note, on most Eeepc, there is no way to check if a method exist
1878          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1879          * but once again, SPEC may probably be used for that kind of things.
1880          */
1881         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1882                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1883         else
1884                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1885
1886         /* CWAP allow to define the behavior of the Fn+F2 key,
1887          * this method doesn't seems to be present on Eee PCs */
1888         if (asus->driver->quirks->wapf >= 0)
1889                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1890                                       asus->driver->quirks->wapf, NULL);
1891
1892         return asus_wmi_sysfs_init(asus->platform_device);
1893 }
1894
1895 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1896 {
1897         asus_wmi_sysfs_exit(asus->platform_device);
1898 }
1899
1900 /*
1901  * debugfs
1902  */
1903 struct asus_wmi_debugfs_node {
1904         struct asus_wmi *asus;
1905         char *name;
1906         int (*show) (struct seq_file *m, void *data);
1907 };
1908
1909 static int show_dsts(struct seq_file *m, void *data)
1910 {
1911         struct asus_wmi *asus = m->private;
1912         int err;
1913         u32 retval = -1;
1914
1915         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1916
1917         if (err < 0)
1918                 return err;
1919
1920         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1921
1922         return 0;
1923 }
1924
1925 static int show_devs(struct seq_file *m, void *data)
1926 {
1927         struct asus_wmi *asus = m->private;
1928         int err;
1929         u32 retval = -1;
1930
1931         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1932                                     &retval);
1933
1934         if (err < 0)
1935                 return err;
1936
1937         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1938                    asus->debug.ctrl_param, retval);
1939
1940         return 0;
1941 }
1942
1943 static int show_call(struct seq_file *m, void *data)
1944 {
1945         struct asus_wmi *asus = m->private;
1946         struct bios_args args = {
1947                 .arg0 = asus->debug.dev_id,
1948                 .arg1 = asus->debug.ctrl_param,
1949         };
1950         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1951         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1952         union acpi_object *obj;
1953         acpi_status status;
1954
1955         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1956                                      0, asus->debug.method_id,
1957                                      &input, &output);
1958
1959         if (ACPI_FAILURE(status))
1960                 return -EIO;
1961
1962         obj = (union acpi_object *)output.pointer;
1963         if (obj && obj->type == ACPI_TYPE_INTEGER)
1964                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1965                            asus->debug.dev_id, asus->debug.ctrl_param,
1966                            (u32) obj->integer.value);
1967         else
1968                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1969                            asus->debug.dev_id, asus->debug.ctrl_param,
1970                            obj ? obj->type : -1);
1971
1972         kfree(obj);
1973
1974         return 0;
1975 }
1976
1977 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1978         {NULL, "devs", show_devs},
1979         {NULL, "dsts", show_dsts},
1980         {NULL, "call", show_call},
1981 };
1982
1983 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1984 {
1985         struct asus_wmi_debugfs_node *node = inode->i_private;
1986
1987         return single_open(file, node->show, node->asus);
1988 }
1989
1990 static const struct file_operations asus_wmi_debugfs_io_ops = {
1991         .owner = THIS_MODULE,
1992         .open = asus_wmi_debugfs_open,
1993         .read = seq_read,
1994         .llseek = seq_lseek,
1995         .release = single_release,
1996 };
1997
1998 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1999 {
2000         debugfs_remove_recursive(asus->debug.root);
2001 }
2002
2003 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2004 {
2005         struct dentry *dent;
2006         int i;
2007
2008         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2009         if (!asus->debug.root) {
2010                 pr_err("failed to create debugfs directory\n");
2011                 goto error_debugfs;
2012         }
2013
2014         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2015                                   asus->debug.root, &asus->debug.method_id);
2016         if (!dent)
2017                 goto error_debugfs;
2018
2019         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2020                                   asus->debug.root, &asus->debug.dev_id);
2021         if (!dent)
2022                 goto error_debugfs;
2023
2024         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2025                                   asus->debug.root, &asus->debug.ctrl_param);
2026         if (!dent)
2027                 goto error_debugfs;
2028
2029         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2030                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2031
2032                 node->asus = asus;
2033                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2034                                            asus->debug.root, node,
2035                                            &asus_wmi_debugfs_io_ops);
2036                 if (!dent) {
2037                         pr_err("failed to create debug file: %s\n", node->name);
2038                         goto error_debugfs;
2039                 }
2040         }
2041
2042         return 0;
2043
2044 error_debugfs:
2045         asus_wmi_debugfs_exit(asus);
2046         return -ENOMEM;
2047 }
2048
2049 static int asus_wmi_fan_init(struct asus_wmi *asus)
2050 {
2051         int status;
2052
2053         asus->asus_hwmon_pwm = -1;
2054         asus->asus_hwmon_num_fans = -1;
2055         asus->asus_hwmon_fan_manual_mode = false;
2056
2057         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2058         if (status) {
2059                 asus->asus_hwmon_num_fans = 0;
2060                 pr_warn("Could not determine number of fans: %d\n", status);
2061                 return -ENXIO;
2062         }
2063
2064         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2065         return 0;
2066 }
2067
2068 /*
2069  * WMI Driver
2070  */
2071 static int asus_wmi_add(struct platform_device *pdev)
2072 {
2073         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2074         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2075         struct asus_wmi *asus;
2076         const char *chassis_type;
2077         acpi_status status;
2078         int err;
2079         u32 result;
2080
2081         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2082         if (!asus)
2083                 return -ENOMEM;
2084
2085         asus->driver = wdrv;
2086         asus->platform_device = pdev;
2087         wdrv->platform_device = pdev;
2088         platform_set_drvdata(asus->platform_device, asus);
2089
2090         if (wdrv->detect_quirks)
2091                 wdrv->detect_quirks(asus->driver);
2092
2093         err = asus_wmi_platform_init(asus);
2094         if (err)
2095                 goto fail_platform;
2096
2097         err = asus_wmi_input_init(asus);
2098         if (err)
2099                 goto fail_input;
2100
2101         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2102         asus_hwmon_fan_set_auto(asus);
2103
2104         err = asus_wmi_hwmon_init(asus);
2105         if (err)
2106                 goto fail_hwmon;
2107
2108         err = asus_wmi_led_init(asus);
2109         if (err)
2110                 goto fail_leds;
2111
2112         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2113         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2114                 asus->driver->wlan_ctrl_by_user = 1;
2115
2116         if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2117                 err = asus_wmi_rfkill_init(asus);
2118                 if (err)
2119                         goto fail_rfkill;
2120         }
2121
2122         if (asus->driver->quirks->wmi_force_als_set)
2123                 asus_wmi_set_als();
2124
2125         /* Some Asus desktop boards export an acpi-video backlight interface,
2126            stop this from showing up */
2127         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2128         if (chassis_type && !strcmp(chassis_type, "3"))
2129                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2130
2131         if (asus->driver->quirks->wmi_backlight_power)
2132                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2133
2134         if (asus->driver->quirks->wmi_backlight_native)
2135                 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2136
2137         if (asus->driver->quirks->xusb2pr)
2138                 asus_wmi_set_xusb2pr(asus);
2139
2140         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2141                 err = asus_wmi_backlight_init(asus);
2142                 if (err && err != -ENODEV)
2143                         goto fail_backlight;
2144         } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2145                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2146
2147         status = wmi_install_notify_handler(asus->driver->event_guid,
2148                                             asus_wmi_notify, asus);
2149         if (ACPI_FAILURE(status)) {
2150                 pr_err("Unable to register notify handler - %d\n", status);
2151                 err = -ENODEV;
2152                 goto fail_wmi_handler;
2153         }
2154
2155         err = asus_wmi_debugfs_init(asus);
2156         if (err)
2157                 goto fail_debugfs;
2158
2159         return 0;
2160
2161 fail_debugfs:
2162         wmi_remove_notify_handler(asus->driver->event_guid);
2163 fail_wmi_handler:
2164         asus_wmi_backlight_exit(asus);
2165 fail_backlight:
2166         asus_wmi_rfkill_exit(asus);
2167 fail_rfkill:
2168         asus_wmi_led_exit(asus);
2169 fail_leds:
2170 fail_hwmon:
2171         asus_wmi_input_exit(asus);
2172 fail_input:
2173         asus_wmi_platform_exit(asus);
2174 fail_platform:
2175         kfree(asus);
2176         return err;
2177 }
2178
2179 static int asus_wmi_remove(struct platform_device *device)
2180 {
2181         struct asus_wmi *asus;
2182
2183         asus = platform_get_drvdata(device);
2184         wmi_remove_notify_handler(asus->driver->event_guid);
2185         asus_wmi_backlight_exit(asus);
2186         asus_wmi_input_exit(asus);
2187         asus_wmi_led_exit(asus);
2188         asus_wmi_rfkill_exit(asus);
2189         asus_wmi_debugfs_exit(asus);
2190         asus_wmi_platform_exit(asus);
2191         asus_hwmon_fan_set_auto(asus);
2192
2193         kfree(asus);
2194         return 0;
2195 }
2196
2197 /*
2198  * Platform driver - hibernate/resume callbacks
2199  */
2200 static int asus_hotk_thaw(struct device *device)
2201 {
2202         struct asus_wmi *asus = dev_get_drvdata(device);
2203
2204         if (asus->wlan.rfkill) {
2205                 bool wlan;
2206
2207                 /*
2208                  * Work around bios bug - acpi _PTS turns off the wireless led
2209                  * during suspend.  Normally it restores it on resume, but
2210                  * we should kick it ourselves in case hibernation is aborted.
2211                  */
2212                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2213                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2214         }
2215
2216         return 0;
2217 }
2218
2219 static int asus_hotk_resume(struct device *device)
2220 {
2221         struct asus_wmi *asus = dev_get_drvdata(device);
2222
2223         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2224                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2225
2226         return 0;
2227 }
2228
2229 static int asus_hotk_restore(struct device *device)
2230 {
2231         struct asus_wmi *asus = dev_get_drvdata(device);
2232         int bl;
2233
2234         /* Refresh both wlan rfkill state and pci hotplug */
2235         if (asus->wlan.rfkill)
2236                 asus_rfkill_hotplug(asus);
2237
2238         if (asus->bluetooth.rfkill) {
2239                 bl = !asus_wmi_get_devstate_simple(asus,
2240                                                    ASUS_WMI_DEVID_BLUETOOTH);
2241                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2242         }
2243         if (asus->wimax.rfkill) {
2244                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2245                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2246         }
2247         if (asus->wwan3g.rfkill) {
2248                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2249                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2250         }
2251         if (asus->gps.rfkill) {
2252                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2253                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2254         }
2255         if (asus->uwb.rfkill) {
2256                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2257                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2258         }
2259         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2260                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2261
2262         return 0;
2263 }
2264
2265 static const struct dev_pm_ops asus_pm_ops = {
2266         .thaw = asus_hotk_thaw,
2267         .restore = asus_hotk_restore,
2268         .resume = asus_hotk_resume,
2269 };
2270
2271 static int asus_wmi_probe(struct platform_device *pdev)
2272 {
2273         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2274         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2275         int ret;
2276
2277         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2278                 pr_warn("Management GUID not found\n");
2279                 return -ENODEV;
2280         }
2281
2282         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2283                 pr_warn("Event GUID not found\n");
2284                 return -ENODEV;
2285         }
2286
2287         if (wdrv->probe) {
2288                 ret = wdrv->probe(pdev);
2289                 if (ret)
2290                         return ret;
2291         }
2292
2293         return asus_wmi_add(pdev);
2294 }
2295
2296 static bool used;
2297
2298 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2299 {
2300         struct platform_driver *platform_driver;
2301         struct platform_device *platform_device;
2302
2303         if (used)
2304                 return -EBUSY;
2305
2306         platform_driver = &driver->platform_driver;
2307         platform_driver->remove = asus_wmi_remove;
2308         platform_driver->driver.owner = driver->owner;
2309         platform_driver->driver.name = driver->name;
2310         platform_driver->driver.pm = &asus_pm_ops;
2311
2312         platform_device = platform_create_bundle(platform_driver,
2313                                                  asus_wmi_probe,
2314                                                  NULL, 0, NULL, 0);
2315         if (IS_ERR(platform_device))
2316                 return PTR_ERR(platform_device);
2317
2318         used = true;
2319         return 0;
2320 }
2321 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2322
2323 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2324 {
2325         platform_device_unregister(driver->platform_device);
2326         platform_driver_unregister(&driver->platform_driver);
2327         used = false;
2328 }
2329 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2330
2331 static int __init asus_wmi_init(void)
2332 {
2333         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2334                 pr_info("Asus Management GUID not found\n");
2335                 return -ENODEV;
2336         }
2337
2338         pr_info("ASUS WMI generic driver loaded\n");
2339         return 0;
2340 }
2341
2342 static void __exit asus_wmi_exit(void)
2343 {
2344         pr_info("ASUS WMI generic driver unloaded\n");
2345 }
2346
2347 module_init(asus_wmi_init);
2348 module_exit(asus_wmi_exit);