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