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 #define NOTIFY_KBD_BRTTOGGLE            0xc7
  71
  72 /* WMI Methods */
  73 #define ASUS_WMI_METHODID_SPEC          0x43455053 /* BIOS SPECification */
  74 #define ASUS_WMI_METHODID_SFBD          0x44424653 /* Set First Boot Device */
  75 #define ASUS_WMI_METHODID_GLCD          0x44434C47 /* Get LCD status */
  76 #define ASUS_WMI_METHODID_GPID          0x44495047 /* Get Panel ID?? (Resol) */
  77 #define ASUS_WMI_METHODID_QMOD          0x444F4D51 /* Quiet MODe */
  78 #define ASUS_WMI_METHODID_SPLV          0x4C425053 /* Set Panel Light Value */
  79 #define ASUS_WMI_METHODID_AGFN          0x4E464741 /* FaN? */
  80 #define ASUS_WMI_METHODID_SFUN          0x4E554653 /* FUNCtionalities */
  81 #define ASUS_WMI_METHODID_SDSP          0x50534453 /* Set DiSPlay output */
  82 #define ASUS_WMI_METHODID_GDSP          0x50534447 /* Get DiSPlay output */
  83 #define ASUS_WMI_METHODID_DEVP          0x50564544 /* DEVice Policy */
  84 #define ASUS_WMI_METHODID_OSVR          0x5256534F /* OS VeRsion */
  85 #define ASUS_WMI_METHODID_DSTS          0x53544344 /* Device STatuS */
  86 #define ASUS_WMI_METHODID_DSTS2         0x53545344 /* Device STatuS #2*/
  87 #define ASUS_WMI_METHODID_BSTS          0x53545342 /* Bios STatuS ? */
  88 #define ASUS_WMI_METHODID_DEVS          0x53564544 /* DEVice Set */
  89 #define ASUS_WMI_METHODID_CFVS          0x53564643 /* CPU Frequency Volt Set */
  90 #define ASUS_WMI_METHODID_KBFT          0x5446424B /* KeyBoard FilTer */
  91 #define ASUS_WMI_METHODID_INIT          0x54494E49 /* INITialize */
  92 #define ASUS_WMI_METHODID_HKEY          0x59454B48 /* Hot KEY ?? */
  93
  94 #define ASUS_WMI_UNSUPPORTED_METHOD     0xFFFFFFFE
  95
  96 /* Wireless */
  97 #define ASUS_WMI_DEVID_HW_SWITCH        0x00010001
  98 #define ASUS_WMI_DEVID_WIRELESS_LED     0x00010002
  99 #define ASUS_WMI_DEVID_CWAP             0x00010003
 100 #define ASUS_WMI_DEVID_WLAN             0x00010011
 101 #define ASUS_WMI_DEVID_WLAN_LED         0x00010012
 102 #define ASUS_WMI_DEVID_BLUETOOTH        0x00010013
 103 #define ASUS_WMI_DEVID_GPS              0x00010015
 104 #define ASUS_WMI_DEVID_WIMAX            0x00010017
 105 #define ASUS_WMI_DEVID_WWAN3G           0x00010019
 106 #define ASUS_WMI_DEVID_UWB              0x00010021
 107
 108 /* Leds */
 109 /* 0x000200XX and 0x000400XX */
 110 #define ASUS_WMI_DEVID_LED1             0x00020011
 111 #define ASUS_WMI_DEVID_LED2             0x00020012
 112 #define ASUS_WMI_DEVID_LED3             0x00020013
 113 #define ASUS_WMI_DEVID_LED4             0x00020014
 114 #define ASUS_WMI_DEVID_LED5             0x00020015
 115 #define ASUS_WMI_DEVID_LED6             0x00020016
 116
 117 /* Backlight and Brightness */
 118 #define ASUS_WMI_DEVID_ALS_ENABLE       0x00050001 /* Ambient Light Sensor */
 119 #define ASUS_WMI_DEVID_BACKLIGHT        0x00050011
 120 #define ASUS_WMI_DEVID_BRIGHTNESS       0x00050012
 121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT    0x00050021
 122 #define ASUS_WMI_DEVID_LIGHT_SENSOR     0x00050022 /* ?? */
 123 #define ASUS_WMI_DEVID_LIGHTBAR         0x00050025
 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 #define ASUS_WMI_DSTS_LIGHTBAR_MASK     0x0000000F
 154
 155 #define ASUS_FAN_DESC                   "cpu_fan"
 156 #define ASUS_FAN_MFUN                   0x13
 157 #define ASUS_FAN_SFUN_READ              0x06
 158 #define ASUS_FAN_SFUN_WRITE             0x07
 159 #define ASUS_FAN_CTRL_MANUAL            1
 160 #define ASUS_FAN_CTRL_AUTO              2
 161
 162 #define USB_INTEL_XUSB2PR               0xD0
 163 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI   0x9c31
 164
 165 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
 166
 167 static bool ashs_present(void)
 168 {
 169         int i = 0;
 170         while (ashs_ids[i]) {
 171                 if (acpi_dev_found(ashs_ids[i++]))
 172                         return true;
 173         }
 174         return false;
 175 }
 176
 177 struct bios_args {
 178         u32 arg0;
 179         u32 arg1;
 180 } __packed;
 181
 182 /*
 183  * Struct that's used for all methods called via AGFN. Naming is
 184  * identically to the AML code.
 185  */
 186 struct agfn_args {
 187         u16 mfun; /* probably "Multi-function" to be called */
 188         u16 sfun; /* probably "Sub-function" to be called */
 189         u16 len;  /* size of the hole struct, including subfunction fields */
 190         u8 stas;  /* not used by now */
 191         u8 err;   /* zero on success */
 192 } __packed;
 193
 194 /* struct used for calling fan read and write methods */
 195 struct fan_args {
 196         struct agfn_args agfn;  /* common fields */
 197         u8 fan;                 /* fan number: 0: set auto mode 1: 1st fan */
 198         u32 speed;              /* read: RPM/100 - write: 0-255 */
 199 } __packed;
 200
 201 /*
 202  * <platform>/    - debugfs root directory
 203  *   dev_id      - current dev_id
 204  *   ctrl_param  - current ctrl_param
 205  *   method_id   - current method_id
 206  *   devs        - call DEVS(dev_id, ctrl_param) and print result
 207  *   dsts        - call DSTS(dev_id)  and print result
 208  *   call        - call method_id(dev_id, ctrl_param) and print result
 209  */
 210 struct asus_wmi_debug {
 211         struct dentry *root;
 212         u32 method_id;
 213         u32 dev_id;
 214         u32 ctrl_param;
 215 };
 216
 217 struct asus_rfkill {
 218         struct asus_wmi *asus;
 219         struct rfkill *rfkill;
 220         u32 dev_id;
 221 };
 222
 223 struct asus_wmi {
 224         int dsts_id;
 225         int spec;
 226         int sfun;
 227
 228         struct input_dev *inputdev;
 229         struct backlight_device *backlight_device;
 230         struct platform_device *platform_device;
 231
 232         struct led_classdev wlan_led;
 233         int wlan_led_wk;
 234         struct led_classdev tpd_led;
 235         int tpd_led_wk;
 236         struct led_classdev kbd_led;
 237         int kbd_led_wk;
 238         struct led_classdev lightbar_led;
 239         int lightbar_led_wk;
 240         struct workqueue_struct *led_workqueue;
 241         struct work_struct tpd_led_work;
 242         struct work_struct kbd_led_work;
 243         struct work_struct wlan_led_work;
 244         struct work_struct lightbar_led_work;
 245
 246         struct asus_rfkill wlan;
 247         struct asus_rfkill bluetooth;
 248         struct asus_rfkill wimax;
 249         struct asus_rfkill wwan3g;
 250         struct asus_rfkill gps;
 251         struct asus_rfkill uwb;
 252
 253         bool asus_hwmon_fan_manual_mode;
 254         int asus_hwmon_num_fans;
 255         int asus_hwmon_pwm;
 256
 257         struct hotplug_slot *hotplug_slot;
 258         struct mutex hotplug_lock;
 259         struct mutex wmi_lock;
 260         struct workqueue_struct *hotplug_workqueue;
 261         struct work_struct hotplug_work;
 262
 263         struct asus_wmi_debug debug;
 264
 265         struct asus_wmi_driver *driver;
 266 };
 267
 268 static int asus_wmi_input_init(struct asus_wmi *asus)
 269 {
 270         int err;
 271
 272         asus->inputdev = input_allocate_device();
 273         if (!asus->inputdev)
 274                 return -ENOMEM;
 275
 276         asus->inputdev->name = asus->driver->input_name;
 277         asus->inputdev->phys = asus->driver->input_phys;
 278         asus->inputdev->id.bustype = BUS_HOST;
 279         asus->inputdev->dev.parent = &asus->platform_device->dev;
 280         set_bit(EV_REP, asus->inputdev->evbit);
 281
 282         err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
 283         if (err)
 284                 goto err_free_dev;
 285
 286         err = input_register_device(asus->inputdev);
 287         if (err)
 288                 goto err_free_dev;
 289
 290         return 0;
 291
 292 err_free_dev:
 293         input_free_device(asus->inputdev);
 294         return err;
 295 }
 296
 297 static void asus_wmi_input_exit(struct asus_wmi *asus)
 298 {
 299         if (asus->inputdev)
 300                 input_unregister_device(asus->inputdev);
 301
 302         asus->inputdev = NULL;
 303 }
 304
 305 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
 306                                     u32 *retval)
 307 {
 308         struct bios_args args = {
 309                 .arg0 = arg0,
 310                 .arg1 = arg1,
 311         };
 312         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
 313         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 314         acpi_status status;
 315         union acpi_object *obj;
 316         u32 tmp = 0;
 317
 318         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
 319                                      &input, &output);
 320
 321         if (ACPI_FAILURE(status))
 322                 goto exit;
 323
 324         obj = (union acpi_object *)output.pointer;
 325         if (obj && obj->type == ACPI_TYPE_INTEGER)
 326                 tmp = (u32) obj->integer.value;
 327
 328         if (retval)
 329                 *retval = tmp;
 330
 331         kfree(obj);
 332
 333 exit:
 334         if (ACPI_FAILURE(status))
 335                 return -EIO;
 336
 337         if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
 338                 return -ENODEV;
 339
 340         return 0;
 341 }
 342
 343 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
 344 {
 345         struct acpi_buffer input;
 346         u64 phys_addr;
 347         u32 retval;
 348         u32 status = -1;
 349
 350         /*
 351          * Copy to dma capable address otherwise memory corruption occurs as
 352          * bios has to be able to access it.
 353          */
 354         input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
 355         input.length = args.length;
 356         if (!input.pointer)
 357                 return -ENOMEM;
 358         phys_addr = virt_to_phys(input.pointer);
 359         memcpy(input.pointer, args.pointer, args.length);
 360
 361         status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
 362                                         phys_addr, 0, &retval);
 363         if (!status)
 364                 memcpy(args.pointer, input.pointer, args.length);
 365
 366         kfree(input.pointer);
 367         if (status)
 368                 return -ENXIO;
 369
 370         return retval;
 371 }
 372
 373 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
 374 {
 375         return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
 376 }
 377
 378 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
 379                                  u32 *retval)
 380 {
 381         return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
 382                                         ctrl_param, retval);
 383 }
 384
 385 /* Helper for special devices with magic return codes */
 386 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
 387                                       u32 dev_id, u32 mask)
 388 {
 389         u32 retval = 0;
 390         int err;
 391
 392         err = asus_wmi_get_devstate(asus, dev_id, &retval);
 393
 394         if (err < 0)
 395                 return err;
 396
 397         if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
 398                 return -ENODEV;
 399
 400         if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
 401                 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
 402                         return -ENODEV;
 403         }
 404
 405         return retval & mask;
 406 }
 407
 408 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
 409 {
 410         return asus_wmi_get_devstate_bits(asus, dev_id,
 411                                           ASUS_WMI_DSTS_STATUS_BIT);
 412 }
 413
 414 /*
 415  * LEDs
 416  */
 417 /*
 418  * These functions actually update the LED's, and are called from a
 419  * workqueue. By doing this as separate work rather than when the LED
 420  * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 421  * potentially bad time, such as a timer interrupt.
 422  */
 423 static void tpd_led_update(struct work_struct *work)
 424 {
 425         int ctrl_param;
 426         struct asus_wmi *asus;
 427
 428         asus = container_of(work, struct asus_wmi, tpd_led_work);
 429
 430         ctrl_param = asus->tpd_led_wk;
 431         asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
 432 }
 433
 434 static void tpd_led_set(struct led_classdev *led_cdev,
 435                         enum led_brightness value)
 436 {
 437         struct asus_wmi *asus;
 438
 439         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 440
 441         asus->tpd_led_wk = !!value;
 442         queue_work(asus->led_workqueue, &asus->tpd_led_work);
 443 }
 444
 445 static int read_tpd_led_state(struct asus_wmi *asus)
 446 {
 447         return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
 448 }
 449
 450 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
 451 {
 452         struct asus_wmi *asus;
 453
 454         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 455
 456         return read_tpd_led_state(asus);
 457 }
 458
 459 static void kbd_led_update(struct work_struct *work)
 460 {
 461         int ctrl_param = 0;
 462         struct asus_wmi *asus;
 463
 464         asus = container_of(work, struct asus_wmi, kbd_led_work);
 465
 466         /*
 467          * bits 0-2: level
 468          * bit 7: light on/off
 469          */
 470         if (asus->kbd_led_wk > 0)
 471                 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
 472
 473         asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
 474         led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
 475 }
 476
 477 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
 478 {
 479         int retval;
 480
 481         /*
 482          * bits 0-2: level
 483          * bit 7: light on/off
 484          * bit 8-10: environment (0: dark, 1: normal, 2: light)
 485          * bit 17: status unknown
 486          */
 487         retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
 488                                             0xFFFF);
 489
 490         /* Unknown status is considered as off */
 491         if (retval == 0x8000)
 492                 retval = 0;
 493
 494         if (retval >= 0) {
 495                 if (level)
 496                         *level = retval & 0x7F;
 497                 if (env)
 498                         *env = (retval >> 8) & 0x7F;
 499                 retval = 0;
 500         }
 501
 502         return retval;
 503 }
 504
 505 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
 506 {
 507         struct asus_wmi *asus;
 508         int max_level;
 509
 510         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 511         max_level = asus->kbd_led.max_brightness;
 512
 513         if (value > max_level)
 514                 value = max_level;
 515         else if (value < 0)
 516                 value = 0;
 517
 518         asus->kbd_led_wk = value;
 519         queue_work(asus->led_workqueue, &asus->kbd_led_work);
 520 }
 521
 522 static void kbd_led_set(struct led_classdev *led_cdev,
 523                         enum led_brightness value)
 524 {
 525         do_kbd_led_set(led_cdev, value);
 526 }
 527
 528 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 529 {
 530         struct asus_wmi *asus;
 531         int retval, value;
 532
 533         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 534
 535         retval = kbd_led_read(asus, &value, NULL);
 536
 537         if (retval < 0)
 538                 return retval;
 539
 540         return value;
 541 }
 542
 543 static int wlan_led_unknown_state(struct asus_wmi *asus)
 544 {
 545         u32 result;
 546
 547         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 548
 549         return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
 550 }
 551
 552 static int wlan_led_presence(struct asus_wmi *asus)
 553 {
 554         u32 result;
 555
 556         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 557
 558         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
 559 }
 560
 561 static void wlan_led_update(struct work_struct *work)
 562 {
 563         int ctrl_param;
 564         struct asus_wmi *asus;
 565
 566         asus = container_of(work, struct asus_wmi, wlan_led_work);
 567
 568         ctrl_param = asus->wlan_led_wk;
 569         asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
 570 }
 571
 572 static void wlan_led_set(struct led_classdev *led_cdev,
 573                          enum led_brightness value)
 574 {
 575         struct asus_wmi *asus;
 576
 577         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 578
 579         asus->wlan_led_wk = !!value;
 580         queue_work(asus->led_workqueue, &asus->wlan_led_work);
 581 }
 582
 583 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
 584 {
 585         struct asus_wmi *asus;
 586         u32 result;
 587
 588         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 589         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 590
 591         return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
 592 }
 593
 594 static void lightbar_led_update(struct work_struct *work)
 595 {
 596         struct asus_wmi *asus;
 597         int ctrl_param;
 598
 599         asus = container_of(work, struct asus_wmi, lightbar_led_work);
 600
 601         ctrl_param = asus->lightbar_led_wk;
 602         asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
 603 }
 604
 605 static void lightbar_led_set(struct led_classdev *led_cdev,
 606                              enum led_brightness value)
 607 {
 608         struct asus_wmi *asus;
 609
 610         asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
 611
 612         asus->lightbar_led_wk = !!value;
 613         queue_work(asus->led_workqueue, &asus->lightbar_led_work);
 614 }
 615
 616 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
 617 {
 618         struct asus_wmi *asus;
 619         u32 result;
 620
 621         asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
 622         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
 623
 624         return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
 625 }
 626
 627 static int lightbar_led_presence(struct asus_wmi *asus)
 628 {
 629         u32 result;
 630
 631         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
 632
 633         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
 634 }
 635
 636 static void asus_wmi_led_exit(struct asus_wmi *asus)
 637 {
 638         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
 639                 led_classdev_unregister(&asus->kbd_led);
 640         if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
 641                 led_classdev_unregister(&asus->tpd_led);
 642         if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
 643                 led_classdev_unregister(&asus->wlan_led);
 644         if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
 645                 led_classdev_unregister(&asus->lightbar_led);
 646         if (asus->led_workqueue)
 647                 destroy_workqueue(asus->led_workqueue);
 648 }
 649
 650 static int asus_wmi_led_init(struct asus_wmi *asus)
 651 {
 652         int rv = 0, led_val;
 653
 654         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 655         if (!asus->led_workqueue)
 656                 return -ENOMEM;
 657
 658         if (read_tpd_led_state(asus) >= 0) {
 659                 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
 660
 661                 asus->tpd_led.name = "asus::touchpad";
 662                 asus->tpd_led.brightness_set = tpd_led_set;
 663                 asus->tpd_led.brightness_get = tpd_led_get;
 664                 asus->tpd_led.max_brightness = 1;
 665
 666                 rv = led_classdev_register(&asus->platform_device->dev,
 667                                            &asus->tpd_led);
 668                 if (rv)
 669                         goto error;
 670         }
 671
 672         led_val = kbd_led_read(asus, NULL, NULL);
 673         if (led_val >= 0) {
 674                 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
 675
 676                 asus->kbd_led_wk = led_val;
 677                 asus->kbd_led.name = "asus::kbd_backlight";
 678                 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
 679                 asus->kbd_led.brightness_set = kbd_led_set;
 680                 asus->kbd_led.brightness_get = kbd_led_get;
 681                 asus->kbd_led.max_brightness = 3;
 682
 683                 rv = led_classdev_register(&asus->platform_device->dev,
 684                                            &asus->kbd_led);
 685                 if (rv)
 686                         goto error;
 687         }
 688
 689         if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
 690                 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
 691
 692                 asus->wlan_led.name = "asus::wlan";
 693                 asus->wlan_led.brightness_set = wlan_led_set;
 694                 if (!wlan_led_unknown_state(asus))
 695                         asus->wlan_led.brightness_get = wlan_led_get;
 696                 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
 697                 asus->wlan_led.max_brightness = 1;
 698                 asus->wlan_led.default_trigger = "asus-wlan";
 699
 700                 rv = led_classdev_register(&asus->platform_device->dev,
 701                                            &asus->wlan_led);
 702                 if (rv)
 703                         goto error;
 704         }
 705
 706         if (lightbar_led_presence(asus)) {
 707                 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
 708
 709                 asus->lightbar_led.name = "asus::lightbar";
 710                 asus->lightbar_led.brightness_set = lightbar_led_set;
 711                 asus->lightbar_led.brightness_get = lightbar_led_get;
 712                 asus->lightbar_led.max_brightness = 1;
 713
 714                 rv = led_classdev_register(&asus->platform_device->dev,
 715                                            &asus->lightbar_led);
 716         }
 717
 718 error:
 719         if (rv)
 720                 asus_wmi_led_exit(asus);
 721
 722         return rv;
 723 }
 724
 725
 726 /*
 727  * PCI hotplug (for wlan rfkill)
 728  */
 729 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
 730 {
 731         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 732
 733         if (result < 0)
 734                 return false;
 735         return !result;
 736 }
 737
 738 static void asus_rfkill_hotplug(struct asus_wmi *asus)
 739 {
 740         struct pci_dev *dev;
 741         struct pci_bus *bus;
 742         bool blocked;
 743         bool absent;
 744         u32 l;
 745
 746         mutex_lock(&asus->wmi_lock);
 747         blocked = asus_wlan_rfkill_blocked(asus);
 748         mutex_unlock(&asus->wmi_lock);
 749
 750         mutex_lock(&asus->hotplug_lock);
 751         pci_lock_rescan_remove();
 752
 753         if (asus->wlan.rfkill)
 754                 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
 755
 756         if (asus->hotplug_slot) {
 757                 bus = pci_find_bus(0, 1);
 758                 if (!bus) {
 759                         pr_warn("Unable to find PCI bus 1?\n");
 760                         goto out_unlock;
 761                 }
 762
 763                 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
 764                         pr_err("Unable to read PCI config space?\n");
 765                         goto out_unlock;
 766                 }
 767                 absent = (l == 0xffffffff);
 768
 769                 if (blocked != absent) {
 770                         pr_warn("BIOS says wireless lan is %s, "
 771                                 "but the pci device is %s\n",
 772                                 blocked ? "blocked" : "unblocked",
 773                                 absent ? "absent" : "present");
 774                         pr_warn("skipped wireless hotplug as probably "
 775                                 "inappropriate for this model\n");
 776                         goto out_unlock;
 777                 }
 778
 779                 if (!blocked) {
 780                         dev = pci_get_slot(bus, 0);
 781                         if (dev) {
 782                                 /* Device already present */
 783                                 pci_dev_put(dev);
 784                                 goto out_unlock;
 785                         }
 786                         dev = pci_scan_single_device(bus, 0);
 787                         if (dev) {
 788                                 pci_bus_assign_resources(bus);
 789                                 pci_bus_add_device(dev);
 790                         }
 791                 } else {
 792                         dev = pci_get_slot(bus, 0);
 793                         if (dev) {
 794                                 pci_stop_and_remove_bus_device(dev);
 795                                 pci_dev_put(dev);
 796                         }
 797                 }
 798         }
 799
 800 out_unlock:
 801         pci_unlock_rescan_remove();
 802         mutex_unlock(&asus->hotplug_lock);
 803 }
 804
 805 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
 806 {
 807         struct asus_wmi *asus = data;
 808
 809         if (event != ACPI_NOTIFY_BUS_CHECK)
 810                 return;
 811
 812         /*
 813          * We can't call directly asus_rfkill_hotplug because most
 814          * of the time WMBC is still being executed and not reetrant.
 815          * There is currently no way to tell ACPICA that  we want this
 816          * method to be serialized, we schedule a asus_rfkill_hotplug
 817          * call later, in a safer context.
 818          */
 819         queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
 820 }
 821
 822 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
 823 {
 824         acpi_status status;
 825         acpi_handle handle;
 826
 827         status = acpi_get_handle(NULL, node, &handle);
 828
 829         if (ACPI_SUCCESS(status)) {
 830                 status = acpi_install_notify_handler(handle,
 831                                                      ACPI_SYSTEM_NOTIFY,
 832                                                      asus_rfkill_notify, asus);
 833                 if (ACPI_FAILURE(status))
 834                         pr_warn("Failed to register notify on %s\n", node);
 835         } else
 836                 return -ENODEV;
 837
 838         return 0;
 839 }
 840
 841 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
 842 {
 843         acpi_status status = AE_OK;
 844         acpi_handle handle;
 845
 846         status = acpi_get_handle(NULL, node, &handle);
 847
 848         if (ACPI_SUCCESS(status)) {
 849                 status = acpi_remove_notify_handler(handle,
 850                                                     ACPI_SYSTEM_NOTIFY,
 851                                                     asus_rfkill_notify);
 852                 if (ACPI_FAILURE(status))
 853                         pr_err("Error removing rfkill notify handler %s\n",
 854                                node);
 855         }
 856 }
 857
 858 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
 859                                    u8 *value)
 860 {
 861         struct asus_wmi *asus = hotplug_slot->private;
 862         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 863
 864         if (result < 0)
 865                 return result;
 866
 867         *value = !!result;
 868         return 0;
 869 }
 870
 871 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
 872         .owner = THIS_MODULE,
 873         .get_adapter_status = asus_get_adapter_status,
 874         .get_power_status = asus_get_adapter_status,
 875 };
 876
 877 static void asus_hotplug_work(struct work_struct *work)
 878 {
 879         struct asus_wmi *asus;
 880
 881         asus = container_of(work, struct asus_wmi, hotplug_work);
 882         asus_rfkill_hotplug(asus);
 883 }
 884
 885 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
 886 {
 887         int ret = -ENOMEM;
 888         struct pci_bus *bus = pci_find_bus(0, 1);
 889
 890         if (!bus) {
 891                 pr_err("Unable to find wifi PCI bus\n");
 892                 return -ENODEV;
 893         }
 894
 895         asus->hotplug_workqueue =
 896             create_singlethread_workqueue("hotplug_workqueue");
 897         if (!asus->hotplug_workqueue)
 898                 goto error_workqueue;
 899
 900         INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
 901
 902         asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 903         if (!asus->hotplug_slot)
 904                 goto error_slot;
 905
 906         asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
 907                                            GFP_KERNEL);
 908         if (!asus->hotplug_slot->info)
 909                 goto error_info;
 910
 911         asus->hotplug_slot->private = asus;
 912         asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
 913         asus_get_adapter_status(asus->hotplug_slot,
 914                                 &asus->hotplug_slot->info->adapter_status);
 915
 916         ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
 917         if (ret) {
 918                 pr_err("Unable to register hotplug slot - %d\n", ret);
 919                 goto error_register;
 920         }
 921
 922         return 0;
 923
 924 error_register:
 925         kfree(asus->hotplug_slot->info);
 926 error_info:
 927         kfree(asus->hotplug_slot);
 928         asus->hotplug_slot = NULL;
 929 error_slot:
 930         destroy_workqueue(asus->hotplug_workqueue);
 931 error_workqueue:
 932         return ret;
 933 }
 934
 935 /*
 936  * Rfkill devices
 937  */
 938 static int asus_rfkill_set(void *data, bool blocked)
 939 {
 940         struct asus_rfkill *priv = data;
 941         u32 ctrl_param = !blocked;
 942         u32 dev_id = priv->dev_id;
 943
 944         /*
 945          * If the user bit is set, BIOS can't set and record the wlan status,
 946          * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
 947          * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
 948          * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
 949          * while setting the wlan status through WMI.
 950          * This is also the behavior that windows app will do.
 951          */
 952         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 953              priv->asus->driver->wlan_ctrl_by_user)
 954                 dev_id = ASUS_WMI_DEVID_WLAN_LED;
 955
 956         return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
 957 }
 958
 959 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
 960 {
 961         struct asus_rfkill *priv = data;
 962         int result;
 963
 964         result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
 965
 966         if (result < 0)
 967                 return;
 968
 969         rfkill_set_sw_state(priv->rfkill, !result);
 970 }
 971
 972 static int asus_rfkill_wlan_set(void *data, bool blocked)
 973 {
 974         struct asus_rfkill *priv = data;
 975         struct asus_wmi *asus = priv->asus;
 976         int ret;
 977
 978         /*
 979          * This handler is enabled only if hotplug is enabled.
 980          * In this case, the asus_wmi_set_devstate() will
 981          * trigger a wmi notification and we need to wait
 982          * this call to finish before being able to call
 983          * any wmi method
 984          */
 985         mutex_lock(&asus->wmi_lock);
 986         ret = asus_rfkill_set(data, blocked);
 987         mutex_unlock(&asus->wmi_lock);
 988         return ret;
 989 }
 990
 991 static const struct rfkill_ops asus_rfkill_wlan_ops = {
 992         .set_block = asus_rfkill_wlan_set,
 993         .query = asus_rfkill_query,
 994 };
 995
 996 static const struct rfkill_ops asus_rfkill_ops = {
 997         .set_block = asus_rfkill_set,
 998         .query = asus_rfkill_query,
 999 };
1000
1001 static int asus_new_rfkill(struct asus_wmi *asus,
1002                            struct asus_rfkill *arfkill,
1003                            const char *name, enum rfkill_type type, int dev_id)
1004 {
1005         int result = asus_wmi_get_devstate_simple(asus, dev_id);
1006         struct rfkill **rfkill = &arfkill->rfkill;
1007
1008         if (result < 0)
1009                 return result;
1010
1011         arfkill->dev_id = dev_id;
1012         arfkill->asus = asus;
1013
1014         if (dev_id == ASUS_WMI_DEVID_WLAN &&
1015             asus->driver->quirks->hotplug_wireless)
1016                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1017                                        &asus_rfkill_wlan_ops, arfkill);
1018         else
1019                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1020                                        &asus_rfkill_ops, arfkill);
1021
1022         if (!*rfkill)
1023                 return -EINVAL;
1024
1025         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1026                         (asus->driver->quirks->wapf > 0))
1027                 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1028
1029         rfkill_init_sw_state(*rfkill, !result);
1030         result = rfkill_register(*rfkill);
1031         if (result) {
1032                 rfkill_destroy(*rfkill);
1033                 *rfkill = NULL;
1034                 return result;
1035         }
1036         return 0;
1037 }
1038
1039 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1040 {
1041         if (asus->driver->wlan_ctrl_by_user && ashs_present())
1042                 return;
1043
1044         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1045         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1046         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1047         if (asus->wlan.rfkill) {
1048                 rfkill_unregister(asus->wlan.rfkill);
1049                 rfkill_destroy(asus->wlan.rfkill);
1050                 asus->wlan.rfkill = NULL;
1051         }
1052         /*
1053          * Refresh pci hotplug in case the rfkill state was changed after
1054          * asus_unregister_rfkill_notifier()
1055          */
1056         asus_rfkill_hotplug(asus);
1057         if (asus->hotplug_slot) {
1058                 pci_hp_deregister(asus->hotplug_slot);
1059                 kfree(asus->hotplug_slot->info);
1060                 kfree(asus->hotplug_slot);
1061         }
1062         if (asus->hotplug_workqueue)
1063                 destroy_workqueue(asus->hotplug_workqueue);
1064
1065         if (asus->bluetooth.rfkill) {
1066                 rfkill_unregister(asus->bluetooth.rfkill);
1067                 rfkill_destroy(asus->bluetooth.rfkill);
1068                 asus->bluetooth.rfkill = NULL;
1069         }
1070         if (asus->wimax.rfkill) {
1071                 rfkill_unregister(asus->wimax.rfkill);
1072                 rfkill_destroy(asus->wimax.rfkill);
1073                 asus->wimax.rfkill = NULL;
1074         }
1075         if (asus->wwan3g.rfkill) {
1076                 rfkill_unregister(asus->wwan3g.rfkill);
1077                 rfkill_destroy(asus->wwan3g.rfkill);
1078                 asus->wwan3g.rfkill = NULL;
1079         }
1080         if (asus->gps.rfkill) {
1081                 rfkill_unregister(asus->gps.rfkill);
1082                 rfkill_destroy(asus->gps.rfkill);
1083                 asus->gps.rfkill = NULL;
1084         }
1085         if (asus->uwb.rfkill) {
1086                 rfkill_unregister(asus->uwb.rfkill);
1087                 rfkill_destroy(asus->uwb.rfkill);
1088                 asus->uwb.rfkill = NULL;
1089         }
1090 }
1091
1092 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1093 {
1094         int result = 0;
1095
1096         mutex_init(&asus->hotplug_lock);
1097         mutex_init(&asus->wmi_lock);
1098
1099         result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1100                                  RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1101
1102         if (result && result != -ENODEV)
1103                 goto exit;
1104
1105         result = asus_new_rfkill(asus, &asus->bluetooth,
1106                                  "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1107                                  ASUS_WMI_DEVID_BLUETOOTH);
1108
1109         if (result && result != -ENODEV)
1110                 goto exit;
1111
1112         result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1113                                  RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1114
1115         if (result && result != -ENODEV)
1116                 goto exit;
1117
1118         result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1119                                  RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1120
1121         if (result && result != -ENODEV)
1122                 goto exit;
1123
1124         result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1125                                  RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1126
1127         if (result && result != -ENODEV)
1128                 goto exit;
1129
1130         result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1131                                  RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1132
1133         if (result && result != -ENODEV)
1134                 goto exit;
1135
1136         if (!asus->driver->quirks->hotplug_wireless)
1137                 goto exit;
1138
1139         result = asus_setup_pci_hotplug(asus);
1140         /*
1141          * If we get -EBUSY then something else is handling the PCI hotplug -
1142          * don't fail in this case
1143          */
1144         if (result == -EBUSY)
1145                 result = 0;
1146
1147         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1148         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1149         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1150         /*
1151          * Refresh pci hotplug in case the rfkill state was changed during
1152          * setup.
1153          */
1154         asus_rfkill_hotplug(asus);
1155
1156 exit:
1157         if (result && result != -ENODEV)
1158                 asus_wmi_rfkill_exit(asus);
1159
1160         if (result == -ENODEV)
1161                 result = 0;
1162
1163         return result;
1164 }
1165
1166 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1167 {
1168         struct pci_dev *xhci_pdev;
1169         u32 orig_ports_available;
1170         u32 ports_available = asus->driver->quirks->xusb2pr;
1171
1172         xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1173                         PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1174                         NULL);
1175
1176         if (!xhci_pdev)
1177                 return;
1178
1179         pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1180                                 &orig_ports_available);
1181
1182         pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1183                                 cpu_to_le32(ports_available));
1184
1185         pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1186                         orig_ports_available, ports_available);
1187 }
1188
1189 /*
1190  * Some devices dont support or have borcken get_als method
1191  * but still support set method.
1192  */
1193 static void asus_wmi_set_als(void)
1194 {
1195         asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1196 }
1197
1198 /*
1199  * Hwmon device
1200  */
1201 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1202                                           int *speed)
1203 {
1204         struct fan_args args = {
1205                 .agfn.len = sizeof(args),
1206                 .agfn.mfun = ASUS_FAN_MFUN,
1207                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1208                 .fan = fan,
1209                 .speed = 0,
1210         };
1211         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1212         int status;
1213
1214         if (fan != 1)
1215                 return -EINVAL;
1216
1217         status = asus_wmi_evaluate_method_agfn(input);
1218
1219         if (status || args.agfn.err)
1220                 return -ENXIO;
1221
1222         if (speed)
1223                 *speed = args.speed;
1224
1225         return 0;
1226 }
1227
1228 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1229                                      int *speed)
1230 {
1231         struct fan_args args = {
1232                 .agfn.len = sizeof(args),
1233                 .agfn.mfun = ASUS_FAN_MFUN,
1234                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1235                 .fan = fan,
1236                 .speed = speed ?  *speed : 0,
1237         };
1238         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1239         int status;
1240
1241         /* 1: for setting 1st fan's speed 0: setting auto mode */
1242         if (fan != 1 && fan != 0)
1243                 return -EINVAL;
1244
1245         status = asus_wmi_evaluate_method_agfn(input);
1246
1247         if (status || args.agfn.err)
1248                 return -ENXIO;
1249
1250         if (speed && fan == 1)
1251                 asus->asus_hwmon_pwm = *speed;
1252
1253         return 0;
1254 }
1255
1256 /*
1257  * Check if we can read the speed of one fan. If true we assume we can also
1258  * control it.
1259  */
1260 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1261 {
1262         int status;
1263         int speed = 0;
1264
1265         *num_fans = 0;
1266
1267         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1268         if (!status)
1269                 *num_fans = 1;
1270
1271         return 0;
1272 }
1273
1274 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1275 {
1276         int status;
1277
1278         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1279         if (status)
1280                 return -ENXIO;
1281
1282         asus->asus_hwmon_fan_manual_mode = false;
1283
1284         return 0;
1285 }
1286
1287 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1288 {
1289         struct asus_wmi *asus = dev_get_drvdata(dev);
1290         int value;
1291         int ret;
1292
1293         /* no speed readable on manual mode */
1294         if (asus->asus_hwmon_fan_manual_mode)
1295                 return -ENXIO;
1296
1297         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1298         if (ret) {
1299                 pr_warn("reading fan speed failed: %d\n", ret);
1300                 return -ENXIO;
1301         }
1302
1303         return value;
1304 }
1305
1306 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1307 {
1308         int err;
1309
1310         if (asus->asus_hwmon_pwm >= 0) {
1311                 *value = asus->asus_hwmon_pwm;
1312                 return;
1313         }
1314
1315         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1316         if (err < 0)
1317                 return;
1318
1319         *value &= 0xFF;
1320
1321         if (*value == 1) /* Low Speed */
1322                 *value = 85;
1323         else if (*value == 2)
1324                 *value = 170;
1325         else if (*value == 3)
1326                 *value = 255;
1327         else if (*value) {
1328                 pr_err("Unknown fan speed %#x\n", *value);
1329                 *value = -1;
1330         }
1331 }
1332
1333 static ssize_t pwm1_show(struct device *dev,
1334                                struct device_attribute *attr,
1335                                char *buf)
1336 {
1337         struct asus_wmi *asus = dev_get_drvdata(dev);
1338         int value;
1339
1340         asus_hwmon_pwm_show(asus, 0, &value);
1341
1342         return sprintf(buf, "%d\n", value);
1343 }
1344
1345 static ssize_t pwm1_store(struct device *dev,
1346                                      struct device_attribute *attr,
1347                                      const char *buf, size_t count) {
1348         struct asus_wmi *asus = dev_get_drvdata(dev);
1349         int value;
1350         int state;
1351         int ret;
1352
1353         ret = kstrtouint(buf, 10, &value);
1354
1355         if (ret)
1356                 return ret;
1357
1358         value = clamp(value, 0, 255);
1359
1360         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1361         if (state)
1362                 pr_warn("Setting fan speed failed: %d\n", state);
1363         else
1364                 asus->asus_hwmon_fan_manual_mode = true;
1365
1366         return count;
1367 }
1368
1369 static ssize_t fan1_input_show(struct device *dev,
1370                                         struct device_attribute *attr,
1371                                         char *buf)
1372 {
1373         int value = asus_hwmon_fan_rpm_show(dev, 0);
1374
1375         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1376
1377 }
1378
1379 static ssize_t pwm1_enable_show(struct device *dev,
1380                                                  struct device_attribute *attr,
1381                                                  char *buf)
1382 {
1383         struct asus_wmi *asus = dev_get_drvdata(dev);
1384
1385         if (asus->asus_hwmon_fan_manual_mode)
1386                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1387
1388         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1389 }
1390
1391 static ssize_t pwm1_enable_store(struct device *dev,
1392                                                   struct device_attribute *attr,
1393                                                   const char *buf, size_t count)
1394 {
1395         struct asus_wmi *asus = dev_get_drvdata(dev);
1396         int status = 0;
1397         int state;
1398         int ret;
1399
1400         ret = kstrtouint(buf, 10, &state);
1401
1402         if (ret)
1403                 return ret;
1404
1405         if (state == ASUS_FAN_CTRL_MANUAL)
1406                 asus->asus_hwmon_fan_manual_mode = true;
1407         else
1408                 status = asus_hwmon_fan_set_auto(asus);
1409
1410         if (status)
1411                 return status;
1412
1413         return count;
1414 }
1415
1416 static ssize_t fan1_label_show(struct device *dev,
1417                                           struct device_attribute *attr,
1418                                           char *buf)
1419 {
1420         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1421 }
1422
1423 static ssize_t asus_hwmon_temp1(struct device *dev,
1424                                 struct device_attribute *attr,
1425                                 char *buf)
1426 {
1427         struct asus_wmi *asus = dev_get_drvdata(dev);
1428         u32 value;
1429         int err;
1430
1431         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1432
1433         if (err < 0)
1434                 return err;
1435
1436         value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1437
1438         return sprintf(buf, "%d\n", value);
1439 }
1440
1441 /* Fan1 */
1442 static DEVICE_ATTR_RW(pwm1);
1443 static DEVICE_ATTR_RW(pwm1_enable);
1444 static DEVICE_ATTR_RO(fan1_input);
1445 static DEVICE_ATTR_RO(fan1_label);
1446
1447 /* Temperature */
1448 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1449
1450 static struct attribute *hwmon_attributes[] = {
1451         &dev_attr_pwm1.attr,
1452         &dev_attr_pwm1_enable.attr,
1453         &dev_attr_fan1_input.attr,
1454         &dev_attr_fan1_label.attr,
1455
1456         &dev_attr_temp1_input.attr,
1457         NULL
1458 };
1459
1460 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1461                                           struct attribute *attr, int idx)
1462 {
1463         struct device *dev = container_of(kobj, struct device, kobj);
1464         struct platform_device *pdev = to_platform_device(dev->parent);
1465         struct asus_wmi *asus = platform_get_drvdata(pdev);
1466         int dev_id = -1;
1467         int fan_attr = -1;
1468         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1469         bool ok = true;
1470
1471         if (attr == &dev_attr_pwm1.attr)
1472                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1473         else if (attr == &dev_attr_temp1_input.attr)
1474                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1475
1476
1477         if (attr == &dev_attr_fan1_input.attr
1478             || attr == &dev_attr_fan1_label.attr
1479             || attr == &dev_attr_pwm1.attr
1480             || attr == &dev_attr_pwm1_enable.attr) {
1481                 fan_attr = 1;
1482         }
1483
1484         if (dev_id != -1) {
1485                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1486
1487                 if (err < 0 && fan_attr == -1)
1488                         return 0; /* can't return negative here */
1489         }
1490
1491         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1492                 /*
1493                  * We need to find a better way, probably using sfun,
1494                  * bits or spec ...
1495                  * Currently we disable it if:
1496                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1497                  * - reverved bits are non-zero
1498                  * - sfun and presence bit are not set
1499                  */
1500                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1501                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1502                         ok = false;
1503                 else
1504                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1505         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1506                 /* If value is zero, something is clearly wrong */
1507                 if (!value)
1508                         ok = false;
1509         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1510                 ok = true;
1511         } else {
1512                 ok = false;
1513         }
1514
1515         return ok ? attr->mode : 0;
1516 }
1517
1518 static const struct attribute_group hwmon_attribute_group = {
1519         .is_visible = asus_hwmon_sysfs_is_visible,
1520         .attrs = hwmon_attributes
1521 };
1522 __ATTRIBUTE_GROUPS(hwmon_attribute);
1523
1524 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1525 {
1526         struct device *hwmon;
1527
1528         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1529                                                   "asus", asus,
1530                                                   hwmon_attribute_groups);
1531         if (IS_ERR(hwmon)) {
1532                 pr_err("Could not register asus hwmon device\n");
1533                 return PTR_ERR(hwmon);
1534         }
1535         return 0;
1536 }
1537
1538 /*
1539  * Backlight
1540  */
1541 static int read_backlight_power(struct asus_wmi *asus)
1542 {
1543         int ret;
1544         if (asus->driver->quirks->store_backlight_power)
1545                 ret = !asus->driver->panel_power;
1546         else
1547                 ret = asus_wmi_get_devstate_simple(asus,
1548                                                    ASUS_WMI_DEVID_BACKLIGHT);
1549
1550         if (ret < 0)
1551                 return ret;
1552
1553         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1554 }
1555
1556 static int read_brightness_max(struct asus_wmi *asus)
1557 {
1558         u32 retval;
1559         int err;
1560
1561         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1562
1563         if (err < 0)
1564                 return err;
1565
1566         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1567         retval >>= 8;
1568
1569         if (!retval)
1570                 return -ENODEV;
1571
1572         return retval;
1573 }
1574
1575 static int read_brightness(struct backlight_device *bd)
1576 {
1577         struct asus_wmi *asus = bl_get_data(bd);
1578         u32 retval;
1579         int err;
1580
1581         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1582
1583         if (err < 0)
1584                 return err;
1585
1586         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1587 }
1588
1589 static u32 get_scalar_command(struct backlight_device *bd)
1590 {
1591         struct asus_wmi *asus = bl_get_data(bd);
1592         u32 ctrl_param = 0;
1593
1594         if ((asus->driver->brightness < bd->props.brightness) ||
1595             bd->props.brightness == bd->props.max_brightness)
1596                 ctrl_param = 0x00008001;
1597         else if ((asus->driver->brightness > bd->props.brightness) ||
1598                  bd->props.brightness == 0)
1599                 ctrl_param = 0x00008000;
1600
1601         asus->driver->brightness = bd->props.brightness;
1602
1603         return ctrl_param;
1604 }
1605
1606 static int update_bl_status(struct backlight_device *bd)
1607 {
1608         struct asus_wmi *asus = bl_get_data(bd);
1609         u32 ctrl_param;
1610         int power, err = 0;
1611
1612         power = read_backlight_power(asus);
1613         if (power != -ENODEV && bd->props.power != power) {
1614                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1615                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1616                                             ctrl_param, NULL);
1617                 if (asus->driver->quirks->store_backlight_power)
1618                         asus->driver->panel_power = bd->props.power;
1619
1620                 /* When using scalar brightness, updating the brightness
1621                  * will mess with the backlight power */
1622                 if (asus->driver->quirks->scalar_panel_brightness)
1623                         return err;
1624         }
1625
1626         if (asus->driver->quirks->scalar_panel_brightness)
1627                 ctrl_param = get_scalar_command(bd);
1628         else
1629                 ctrl_param = bd->props.brightness;
1630
1631         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1632                                     ctrl_param, NULL);
1633
1634         return err;
1635 }
1636
1637 static const struct backlight_ops asus_wmi_bl_ops = {
1638         .get_brightness = read_brightness,
1639         .update_status = update_bl_status,
1640 };
1641
1642 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1643 {
1644         struct backlight_device *bd = asus->backlight_device;
1645         int old = bd->props.brightness;
1646         int new = old;
1647
1648         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1649                 new = code - NOTIFY_BRNUP_MIN + 1;
1650         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1651                 new = code - NOTIFY_BRNDOWN_MIN;
1652
1653         bd->props.brightness = new;
1654         backlight_update_status(bd);
1655         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1656
1657         return old;
1658 }
1659
1660 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1661 {
1662         struct backlight_device *bd;
1663         struct backlight_properties props;
1664         int max;
1665         int power;
1666
1667         max = read_brightness_max(asus);
1668         if (max < 0)
1669                 return max;
1670
1671         power = read_backlight_power(asus);
1672
1673         if (power == -ENODEV)
1674                 power = FB_BLANK_UNBLANK;
1675         else if (power < 0)
1676                 return power;
1677
1678         memset(&props, 0, sizeof(struct backlight_properties));
1679         props.type = BACKLIGHT_PLATFORM;
1680         props.max_brightness = max;
1681         bd = backlight_device_register(asus->driver->name,
1682                                        &asus->platform_device->dev, asus,
1683                                        &asus_wmi_bl_ops, &props);
1684         if (IS_ERR(bd)) {
1685                 pr_err("Could not register backlight device\n");
1686                 return PTR_ERR(bd);
1687         }
1688
1689         asus->backlight_device = bd;
1690
1691         if (asus->driver->quirks->store_backlight_power)
1692                 asus->driver->panel_power = power;
1693
1694         bd->props.brightness = read_brightness(bd);
1695         bd->props.power = power;
1696         backlight_update_status(bd);
1697
1698         asus->driver->brightness = bd->props.brightness;
1699
1700         return 0;
1701 }
1702
1703 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1704 {
1705         backlight_device_unregister(asus->backlight_device);
1706
1707         asus->backlight_device = NULL;
1708 }
1709
1710 static int is_display_toggle(int code)
1711 {
1712         /* display toggle keys */
1713         if ((code >= 0x61 && code <= 0x67) ||
1714             (code >= 0x8c && code <= 0x93) ||
1715             (code >= 0xa0 && code <= 0xa7) ||
1716             (code >= 0xd0 && code <= 0xd5))
1717                 return 1;
1718
1719         return 0;
1720 }
1721
1722 static void asus_wmi_notify(u32 value, void *context)
1723 {
1724         struct asus_wmi *asus = context;
1725         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1726         union acpi_object *obj;
1727         acpi_status status;
1728         int code;
1729         int orig_code;
1730         unsigned int key_value = 1;
1731         bool autorelease = 1;
1732
1733         status = wmi_get_event_data(value, &response);
1734         if (status != AE_OK) {
1735                 pr_err("bad event status 0x%x\n", status);
1736                 return;
1737         }
1738
1739         obj = (union acpi_object *)response.pointer;
1740
1741         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1742                 goto exit;
1743
1744         code = obj->integer.value;
1745         orig_code = code;
1746
1747         if (asus->driver->key_filter) {
1748                 asus->driver->key_filter(asus->driver, &code, &key_value,
1749                                          &autorelease);
1750                 if (code == ASUS_WMI_KEY_IGNORE)
1751                         goto exit;
1752         }
1753
1754         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1755                 code = ASUS_WMI_BRN_UP;
1756         else if (code >= NOTIFY_BRNDOWN_MIN &&
1757                  code <= NOTIFY_BRNDOWN_MAX)
1758                 code = ASUS_WMI_BRN_DOWN;
1759
1760         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1761                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1762                         asus_wmi_backlight_notify(asus, orig_code);
1763                         goto exit;
1764                 }
1765         }
1766
1767         if (code == NOTIFY_KBD_BRTUP) {
1768                 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1769                 goto exit;
1770         }
1771         if (code == NOTIFY_KBD_BRTDWN) {
1772                 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1773                 goto exit;
1774         }
1775         if (code == NOTIFY_KBD_BRTTOGGLE) {
1776                 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1777                         do_kbd_led_set(&asus->kbd_led, 0);
1778                 else
1779                         do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1780                 goto exit;
1781         }
1782
1783         if (is_display_toggle(code) &&
1784             asus->driver->quirks->no_display_toggle)
1785                 goto exit;
1786
1787         if (!sparse_keymap_report_event(asus->inputdev, code,
1788                                         key_value, autorelease))
1789                 pr_info("Unknown key %x pressed\n", code);
1790
1791 exit:
1792         kfree(obj);
1793 }
1794
1795 /*
1796  * Sys helpers
1797  */
1798 static int parse_arg(const char *buf, unsigned long count, int *val)
1799 {
1800         if (!count)
1801                 return 0;
1802         if (sscanf(buf, "%i", val) != 1)
1803                 return -EINVAL;
1804         return count;
1805 }
1806
1807 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1808                              const char *buf, size_t count)
1809 {
1810         u32 retval;
1811         int rv, err, value;
1812
1813         value = asus_wmi_get_devstate_simple(asus, devid);
1814         if (value < 0)
1815                 return value;
1816
1817         rv = parse_arg(buf, count, &value);
1818         err = asus_wmi_set_devstate(devid, value, &retval);
1819
1820         if (err < 0)
1821                 return err;
1822
1823         return rv;
1824 }
1825
1826 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1827 {
1828         int value = asus_wmi_get_devstate_simple(asus, devid);
1829
1830         if (value < 0)
1831                 return value;
1832
1833         return sprintf(buf, "%d\n", value);
1834 }
1835
1836 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1837         static ssize_t show_##_name(struct device *dev,                 \
1838                                     struct device_attribute *attr,      \
1839                                     char *buf)                          \
1840         {                                                               \
1841                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1842                                                                         \
1843                 return show_sys_wmi(asus, _cm, buf);                    \
1844         }                                                               \
1845         static ssize_t store_##_name(struct device *dev,                \
1846                                      struct device_attribute *attr,     \
1847                                      const char *buf, size_t count)     \
1848         {                                                               \
1849                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1850                                                                         \
1851                 return store_sys_wmi(asus, _cm, buf, count);            \
1852         }                                                               \
1853         static struct device_attribute dev_attr_##_name = {             \
1854                 .attr = {                                               \
1855                         .name = __stringify(_name),                     \
1856                         .mode = _mode },                                \
1857                 .show   = show_##_name,                                 \
1858                 .store  = store_##_name,                                \
1859         }
1860
1861 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1862 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1863 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1864 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1865 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1866
1867 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1868                            const char *buf, size_t count)
1869 {
1870         int value, rv;
1871
1872         if (!count || sscanf(buf, "%i", &value) != 1)
1873                 return -EINVAL;
1874         if (value < 0 || value > 2)
1875                 return -EINVAL;
1876
1877         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1878         if (rv < 0)
1879                 return rv;
1880
1881         return count;
1882 }
1883
1884 static DEVICE_ATTR_WO(cpufv);
1885
1886 static struct attribute *platform_attributes[] = {
1887         &dev_attr_cpufv.attr,
1888         &dev_attr_camera.attr,
1889         &dev_attr_cardr.attr,
1890         &dev_attr_touchpad.attr,
1891         &dev_attr_lid_resume.attr,
1892         &dev_attr_als_enable.attr,
1893         NULL
1894 };
1895
1896 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1897                                     struct attribute *attr, int idx)
1898 {
1899         struct device *dev = container_of(kobj, struct device, kobj);
1900         struct asus_wmi *asus = dev_get_drvdata(dev);
1901         bool ok = true;
1902         int devid = -1;
1903
1904         if (attr == &dev_attr_camera.attr)
1905                 devid = ASUS_WMI_DEVID_CAMERA;
1906         else if (attr == &dev_attr_cardr.attr)
1907                 devid = ASUS_WMI_DEVID_CARDREADER;
1908         else if (attr == &dev_attr_touchpad.attr)
1909                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1910         else if (attr == &dev_attr_lid_resume.attr)
1911                 devid = ASUS_WMI_DEVID_LID_RESUME;
1912         else if (attr == &dev_attr_als_enable.attr)
1913                 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1914
1915         if (devid != -1)
1916                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1917
1918         return ok ? attr->mode : 0;
1919 }
1920
1921 static const struct attribute_group platform_attribute_group = {
1922         .is_visible = asus_sysfs_is_visible,
1923         .attrs = platform_attributes
1924 };
1925
1926 static void asus_wmi_sysfs_exit(struct platform_device *device)
1927 {
1928         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1929 }
1930
1931 static int asus_wmi_sysfs_init(struct platform_device *device)
1932 {
1933         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1934 }
1935
1936 /*
1937  * Platform device
1938  */
1939 static int asus_wmi_platform_init(struct asus_wmi *asus)
1940 {
1941         int rv;
1942
1943         /* INIT enable hotkeys on some models */
1944         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1945                 pr_info("Initialization: %#x\n", rv);
1946
1947         /* We don't know yet what to do with this version... */
1948         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1949                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1950                 asus->spec = rv;
1951         }
1952
1953         /*
1954          * The SFUN method probably allows the original driver to get the list
1955          * of features supported by a given model. For now, 0x0100 or 0x0800
1956          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1957          * The significance of others is yet to be found.
1958          */
1959         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1960                 pr_info("SFUN value: %#x\n", rv);
1961                 asus->sfun = rv;
1962         }
1963
1964         /*
1965          * Eee PC and Notebooks seems to have different method_id for DSTS,
1966          * but it may also be related to the BIOS's SPEC.
1967          * Note, on most Eeepc, there is no way to check if a method exist
1968          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1969          * but once again, SPEC may probably be used for that kind of things.
1970          */
1971         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1972                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1973         else
1974                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1975
1976         /* CWAP allow to define the behavior of the Fn+F2 key,
1977          * this method doesn't seems to be present on Eee PCs */
1978         if (asus->driver->quirks->wapf >= 0)
1979                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1980                                       asus->driver->quirks->wapf, NULL);
1981
1982         return asus_wmi_sysfs_init(asus->platform_device);
1983 }
1984
1985 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1986 {
1987         asus_wmi_sysfs_exit(asus->platform_device);
1988 }
1989
1990 /*
1991  * debugfs
1992  */
1993 struct asus_wmi_debugfs_node {
1994         struct asus_wmi *asus;
1995         char *name;
1996         int (*show) (struct seq_file *m, void *data);
1997 };
1998
1999 static int show_dsts(struct seq_file *m, void *data)
2000 {
2001         struct asus_wmi *asus = m->private;
2002         int err;
2003         u32 retval = -1;
2004
2005         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2006
2007         if (err < 0)
2008                 return err;
2009
2010         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2011
2012         return 0;
2013 }
2014
2015 static int show_devs(struct seq_file *m, void *data)
2016 {
2017         struct asus_wmi *asus = m->private;
2018         int err;
2019         u32 retval = -1;
2020
2021         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2022                                     &retval);
2023
2024         if (err < 0)
2025                 return err;
2026
2027         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2028                    asus->debug.ctrl_param, retval);
2029
2030         return 0;
2031 }
2032
2033 static int show_call(struct seq_file *m, void *data)
2034 {
2035         struct asus_wmi *asus = m->private;
2036         struct bios_args args = {
2037                 .arg0 = asus->debug.dev_id,
2038                 .arg1 = asus->debug.ctrl_param,
2039         };
2040         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2041         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2042         union acpi_object *obj;
2043         acpi_status status;
2044
2045         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2046                                      0, asus->debug.method_id,
2047                                      &input, &output);
2048
2049         if (ACPI_FAILURE(status))
2050                 return -EIO;
2051
2052         obj = (union acpi_object *)output.pointer;
2053         if (obj && obj->type == ACPI_TYPE_INTEGER)
2054                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2055                            asus->debug.dev_id, asus->debug.ctrl_param,
2056                            (u32) obj->integer.value);
2057         else
2058                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2059                            asus->debug.dev_id, asus->debug.ctrl_param,
2060                            obj ? obj->type : -1);
2061
2062         kfree(obj);
2063
2064         return 0;
2065 }
2066
2067 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2068         {NULL, "devs", show_devs},
2069         {NULL, "dsts", show_dsts},
2070         {NULL, "call", show_call},
2071 };
2072
2073 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2074 {
2075         struct asus_wmi_debugfs_node *node = inode->i_private;
2076
2077         return single_open(file, node->show, node->asus);
2078 }
2079
2080 static const struct file_operations asus_wmi_debugfs_io_ops = {
2081         .owner = THIS_MODULE,
2082         .open = asus_wmi_debugfs_open,
2083         .read = seq_read,
2084         .llseek = seq_lseek,
2085         .release = single_release,
2086 };
2087
2088 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2089 {
2090         debugfs_remove_recursive(asus->debug.root);
2091 }
2092
2093 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2094 {
2095         struct dentry *dent;
2096         int i;
2097
2098         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2099         if (!asus->debug.root) {
2100                 pr_err("failed to create debugfs directory\n");
2101                 goto error_debugfs;
2102         }
2103
2104         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2105                                   asus->debug.root, &asus->debug.method_id);
2106         if (!dent)
2107                 goto error_debugfs;
2108
2109         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2110                                   asus->debug.root, &asus->debug.dev_id);
2111         if (!dent)
2112                 goto error_debugfs;
2113
2114         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2115                                   asus->debug.root, &asus->debug.ctrl_param);
2116         if (!dent)
2117                 goto error_debugfs;
2118
2119         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2120                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2121
2122                 node->asus = asus;
2123                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2124                                            asus->debug.root, node,
2125                                            &asus_wmi_debugfs_io_ops);
2126                 if (!dent) {
2127                         pr_err("failed to create debug file: %s\n", node->name);
2128                         goto error_debugfs;
2129                 }
2130         }
2131
2132         return 0;
2133
2134 error_debugfs:
2135         asus_wmi_debugfs_exit(asus);
2136         return -ENOMEM;
2137 }
2138
2139 static int asus_wmi_fan_init(struct asus_wmi *asus)
2140 {
2141         int status;
2142
2143         asus->asus_hwmon_pwm = -1;
2144         asus->asus_hwmon_num_fans = -1;
2145         asus->asus_hwmon_fan_manual_mode = false;
2146
2147         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2148         if (status) {
2149                 asus->asus_hwmon_num_fans = 0;
2150                 pr_warn("Could not determine number of fans: %d\n", status);
2151                 return -ENXIO;
2152         }
2153
2154         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2155         return 0;
2156 }
2157
2158 /*
2159  * WMI Driver
2160  */
2161 static int asus_wmi_add(struct platform_device *pdev)
2162 {
2163         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2164         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2165         struct asus_wmi *asus;
2166         const char *chassis_type;
2167         acpi_status status;
2168         int err;
2169         u32 result;
2170
2171         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2172         if (!asus)
2173                 return -ENOMEM;
2174
2175         asus->driver = wdrv;
2176         asus->platform_device = pdev;
2177         wdrv->platform_device = pdev;
2178         platform_set_drvdata(asus->platform_device, asus);
2179
2180         if (wdrv->detect_quirks)
2181                 wdrv->detect_quirks(asus->driver);
2182
2183         err = asus_wmi_platform_init(asus);
2184         if (err)
2185                 goto fail_platform;
2186
2187         err = asus_wmi_input_init(asus);
2188         if (err)
2189                 goto fail_input;
2190
2191         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2192         asus_hwmon_fan_set_auto(asus);
2193
2194         err = asus_wmi_hwmon_init(asus);
2195         if (err)
2196                 goto fail_hwmon;
2197
2198         err = asus_wmi_led_init(asus);
2199         if (err)
2200                 goto fail_leds;
2201
2202         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2203         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2204                 asus->driver->wlan_ctrl_by_user = 1;
2205
2206         if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2207                 err = asus_wmi_rfkill_init(asus);
2208                 if (err)
2209                         goto fail_rfkill;
2210         }
2211
2212         if (asus->driver->quirks->wmi_force_als_set)
2213                 asus_wmi_set_als();
2214
2215         /* Some Asus desktop boards export an acpi-video backlight interface,
2216            stop this from showing up */
2217         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2218         if (chassis_type && !strcmp(chassis_type, "3"))
2219                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2220
2221         if (asus->driver->quirks->wmi_backlight_power)
2222                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2223
2224         if (asus->driver->quirks->wmi_backlight_native)
2225                 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2226
2227         if (asus->driver->quirks->xusb2pr)
2228                 asus_wmi_set_xusb2pr(asus);
2229
2230         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2231                 err = asus_wmi_backlight_init(asus);
2232                 if (err && err != -ENODEV)
2233                         goto fail_backlight;
2234         }
2235
2236         status = wmi_install_notify_handler(asus->driver->event_guid,
2237                                             asus_wmi_notify, asus);
2238         if (ACPI_FAILURE(status)) {
2239                 pr_err("Unable to register notify handler - %d\n", status);
2240                 err = -ENODEV;
2241                 goto fail_wmi_handler;
2242         }
2243
2244         err = asus_wmi_debugfs_init(asus);
2245         if (err)
2246                 goto fail_debugfs;
2247
2248         return 0;
2249
2250 fail_debugfs:
2251         wmi_remove_notify_handler(asus->driver->event_guid);
2252 fail_wmi_handler:
2253         asus_wmi_backlight_exit(asus);
2254 fail_backlight:
2255         asus_wmi_rfkill_exit(asus);
2256 fail_rfkill:
2257         asus_wmi_led_exit(asus);
2258 fail_leds:
2259 fail_hwmon:
2260         asus_wmi_input_exit(asus);
2261 fail_input:
2262         asus_wmi_platform_exit(asus);
2263 fail_platform:
2264         kfree(asus);
2265         return err;
2266 }
2267
2268 static int asus_wmi_remove(struct platform_device *device)
2269 {
2270         struct asus_wmi *asus;
2271
2272         asus = platform_get_drvdata(device);
2273         wmi_remove_notify_handler(asus->driver->event_guid);
2274         asus_wmi_backlight_exit(asus);
2275         asus_wmi_input_exit(asus);
2276         asus_wmi_led_exit(asus);
2277         asus_wmi_rfkill_exit(asus);
2278         asus_wmi_debugfs_exit(asus);
2279         asus_wmi_platform_exit(asus);
2280         asus_hwmon_fan_set_auto(asus);
2281
2282         kfree(asus);
2283         return 0;
2284 }
2285
2286 /*
2287  * Platform driver - hibernate/resume callbacks
2288  */
2289 static int asus_hotk_thaw(struct device *device)
2290 {
2291         struct asus_wmi *asus = dev_get_drvdata(device);
2292
2293         if (asus->wlan.rfkill) {
2294                 bool wlan;
2295
2296                 /*
2297                  * Work around bios bug - acpi _PTS turns off the wireless led
2298                  * during suspend.  Normally it restores it on resume, but
2299                  * we should kick it ourselves in case hibernation is aborted.
2300                  */
2301                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2302                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2303         }
2304
2305         return 0;
2306 }
2307
2308 static int asus_hotk_resume(struct device *device)
2309 {
2310         struct asus_wmi *asus = dev_get_drvdata(device);
2311
2312         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2313                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2314
2315         return 0;
2316 }
2317
2318 static int asus_hotk_restore(struct device *device)
2319 {
2320         struct asus_wmi *asus = dev_get_drvdata(device);
2321         int bl;
2322
2323         /* Refresh both wlan rfkill state and pci hotplug */
2324         if (asus->wlan.rfkill)
2325                 asus_rfkill_hotplug(asus);
2326
2327         if (asus->bluetooth.rfkill) {
2328                 bl = !asus_wmi_get_devstate_simple(asus,
2329                                                    ASUS_WMI_DEVID_BLUETOOTH);
2330                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2331         }
2332         if (asus->wimax.rfkill) {
2333                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2334                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2335         }
2336         if (asus->wwan3g.rfkill) {
2337                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2338                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2339         }
2340         if (asus->gps.rfkill) {
2341                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2342                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2343         }
2344         if (asus->uwb.rfkill) {
2345                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2346                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2347         }
2348         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2349                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2350
2351         return 0;
2352 }
2353
2354 static const struct dev_pm_ops asus_pm_ops = {
2355         .thaw = asus_hotk_thaw,
2356         .restore = asus_hotk_restore,
2357         .resume = asus_hotk_resume,
2358 };
2359
2360 static int asus_wmi_probe(struct platform_device *pdev)
2361 {
2362         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2363         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2364         int ret;
2365
2366         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2367                 pr_warn("Management GUID not found\n");
2368                 return -ENODEV;
2369         }
2370
2371         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2372                 pr_warn("Event GUID not found\n");
2373                 return -ENODEV;
2374         }
2375
2376         if (wdrv->probe) {
2377                 ret = wdrv->probe(pdev);
2378                 if (ret)
2379                         return ret;
2380         }
2381
2382         return asus_wmi_add(pdev);
2383 }
2384
2385 static bool used;
2386
2387 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2388 {
2389         struct platform_driver *platform_driver;
2390         struct platform_device *platform_device;
2391
2392         if (used)
2393                 return -EBUSY;
2394
2395         platform_driver = &driver->platform_driver;
2396         platform_driver->remove = asus_wmi_remove;
2397         platform_driver->driver.owner = driver->owner;
2398         platform_driver->driver.name = driver->name;
2399         platform_driver->driver.pm = &asus_pm_ops;
2400
2401         platform_device = platform_create_bundle(platform_driver,
2402                                                  asus_wmi_probe,
2403                                                  NULL, 0, NULL, 0);
2404         if (IS_ERR(platform_device))
2405                 return PTR_ERR(platform_device);
2406
2407         used = true;
2408         return 0;
2409 }
2410 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2411
2412 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2413 {
2414         platform_device_unregister(driver->platform_device);
2415         platform_driver_unregister(&driver->platform_driver);
2416         used = false;
2417 }
2418 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2419
2420 static int __init asus_wmi_init(void)
2421 {
2422         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2423                 pr_info("Asus Management GUID not found\n");
2424                 return -ENODEV;
2425         }
2426
2427         pr_info("ASUS WMI generic driver loaded\n");
2428         return 0;
2429 }
2430
2431 static void __exit asus_wmi_exit(void)
2432 {
2433         pr_info("ASUS WMI generic driver unloaded\n");
2434 }
2435
2436 module_init(asus_wmi_init);
2437 module_exit(asus_wmi_exit);