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