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;
 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         if (kbd_led_read(asus, NULL, NULL) >= 0) {
 606                 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
 607
 608                 asus->kbd_led.name = "asus::kbd_backlight";
 609                 asus->kbd_led.brightness_set = kbd_led_set;
 610                 asus->kbd_led.brightness_get = kbd_led_get;
 611                 asus->kbd_led.max_brightness = 3;
 612
 613                 rv = led_classdev_register(&asus->platform_device->dev,
 614                                            &asus->kbd_led);
 615                 if (rv)
 616                         goto error;
 617         }
 618
 619         if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
 620                 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
 621
 622                 asus->wlan_led.name = "asus::wlan";
 623                 asus->wlan_led.brightness_set = wlan_led_set;
 624                 if (!wlan_led_unknown_state(asus))
 625                         asus->wlan_led.brightness_get = wlan_led_get;
 626                 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
 627                 asus->wlan_led.max_brightness = 1;
 628                 asus->wlan_led.default_trigger = "asus-wlan";
 629
 630                 rv = led_classdev_register(&asus->platform_device->dev,
 631                                            &asus->wlan_led);
 632         }
 633
 634 error:
 635         if (rv)
 636                 asus_wmi_led_exit(asus);
 637
 638         return rv;
 639 }
 640
 641
 642 /*
 643  * PCI hotplug (for wlan rfkill)
 644  */
 645 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
 646 {
 647         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 648
 649         if (result < 0)
 650                 return false;
 651         return !result;
 652 }
 653
 654 static void asus_rfkill_hotplug(struct asus_wmi *asus)
 655 {
 656         struct pci_dev *dev;
 657         struct pci_bus *bus;
 658         bool blocked;
 659         bool absent;
 660         u32 l;
 661
 662         mutex_lock(&asus->wmi_lock);
 663         blocked = asus_wlan_rfkill_blocked(asus);
 664         mutex_unlock(&asus->wmi_lock);
 665
 666         mutex_lock(&asus->hotplug_lock);
 667         pci_lock_rescan_remove();
 668
 669         if (asus->wlan.rfkill)
 670                 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
 671
 672         if (asus->hotplug_slot) {
 673                 bus = pci_find_bus(0, 1);
 674                 if (!bus) {
 675                         pr_warn("Unable to find PCI bus 1?\n");
 676                         goto out_unlock;
 677                 }
 678
 679                 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
 680                         pr_err("Unable to read PCI config space?\n");
 681                         goto out_unlock;
 682                 }
 683                 absent = (l == 0xffffffff);
 684
 685                 if (blocked != absent) {
 686                         pr_warn("BIOS says wireless lan is %s, "
 687                                 "but the pci device is %s\n",
 688                                 blocked ? "blocked" : "unblocked",
 689                                 absent ? "absent" : "present");
 690                         pr_warn("skipped wireless hotplug as probably "
 691                                 "inappropriate for this model\n");
 692                         goto out_unlock;
 693                 }
 694
 695                 if (!blocked) {
 696                         dev = pci_get_slot(bus, 0);
 697                         if (dev) {
 698                                 /* Device already present */
 699                                 pci_dev_put(dev);
 700                                 goto out_unlock;
 701                         }
 702                         dev = pci_scan_single_device(bus, 0);
 703                         if (dev) {
 704                                 pci_bus_assign_resources(bus);
 705                                 pci_bus_add_device(dev);
 706                         }
 707                 } else {
 708                         dev = pci_get_slot(bus, 0);
 709                         if (dev) {
 710                                 pci_stop_and_remove_bus_device(dev);
 711                                 pci_dev_put(dev);
 712                         }
 713                 }
 714         }
 715
 716 out_unlock:
 717         pci_unlock_rescan_remove();
 718         mutex_unlock(&asus->hotplug_lock);
 719 }
 720
 721 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
 722 {
 723         struct asus_wmi *asus = data;
 724
 725         if (event != ACPI_NOTIFY_BUS_CHECK)
 726                 return;
 727
 728         /*
 729          * We can't call directly asus_rfkill_hotplug because most
 730          * of the time WMBC is still being executed and not reetrant.
 731          * There is currently no way to tell ACPICA that  we want this
 732          * method to be serialized, we schedule a asus_rfkill_hotplug
 733          * call later, in a safer context.
 734          */
 735         queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
 736 }
 737
 738 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
 739 {
 740         acpi_status status;
 741         acpi_handle handle;
 742
 743         status = acpi_get_handle(NULL, node, &handle);
 744
 745         if (ACPI_SUCCESS(status)) {
 746                 status = acpi_install_notify_handler(handle,
 747                                                      ACPI_SYSTEM_NOTIFY,
 748                                                      asus_rfkill_notify, asus);
 749                 if (ACPI_FAILURE(status))
 750                         pr_warn("Failed to register notify on %s\n", node);
 751         } else
 752                 return -ENODEV;
 753
 754         return 0;
 755 }
 756
 757 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
 758 {
 759         acpi_status status = AE_OK;
 760         acpi_handle handle;
 761
 762         status = acpi_get_handle(NULL, node, &handle);
 763
 764         if (ACPI_SUCCESS(status)) {
 765                 status = acpi_remove_notify_handler(handle,
 766                                                     ACPI_SYSTEM_NOTIFY,
 767                                                     asus_rfkill_notify);
 768                 if (ACPI_FAILURE(status))
 769                         pr_err("Error removing rfkill notify handler %s\n",
 770                                node);
 771         }
 772 }
 773
 774 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
 775                                    u8 *value)
 776 {
 777         struct asus_wmi *asus = hotplug_slot->private;
 778         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
 779
 780         if (result < 0)
 781                 return result;
 782
 783         *value = !!result;
 784         return 0;
 785 }
 786
 787 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
 788 {
 789         kfree(hotplug_slot->info);
 790         kfree(hotplug_slot);
 791 }
 792
 793 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
 794         .owner = THIS_MODULE,
 795         .get_adapter_status = asus_get_adapter_status,
 796         .get_power_status = asus_get_adapter_status,
 797 };
 798
 799 static void asus_hotplug_work(struct work_struct *work)
 800 {
 801         struct asus_wmi *asus;
 802
 803         asus = container_of(work, struct asus_wmi, hotplug_work);
 804         asus_rfkill_hotplug(asus);
 805 }
 806
 807 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
 808 {
 809         int ret = -ENOMEM;
 810         struct pci_bus *bus = pci_find_bus(0, 1);
 811
 812         if (!bus) {
 813                 pr_err("Unable to find wifi PCI bus\n");
 814                 return -ENODEV;
 815         }
 816
 817         asus->hotplug_workqueue =
 818             create_singlethread_workqueue("hotplug_workqueue");
 819         if (!asus->hotplug_workqueue)
 820                 goto error_workqueue;
 821
 822         INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
 823
 824         asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 825         if (!asus->hotplug_slot)
 826                 goto error_slot;
 827
 828         asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
 829                                            GFP_KERNEL);
 830         if (!asus->hotplug_slot->info)
 831                 goto error_info;
 832
 833         asus->hotplug_slot->private = asus;
 834         asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
 835         asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
 836         asus_get_adapter_status(asus->hotplug_slot,
 837                                 &asus->hotplug_slot->info->adapter_status);
 838
 839         ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
 840         if (ret) {
 841                 pr_err("Unable to register hotplug slot - %d\n", ret);
 842                 goto error_register;
 843         }
 844
 845         return 0;
 846
 847 error_register:
 848         kfree(asus->hotplug_slot->info);
 849 error_info:
 850         kfree(asus->hotplug_slot);
 851         asus->hotplug_slot = NULL;
 852 error_slot:
 853         destroy_workqueue(asus->hotplug_workqueue);
 854 error_workqueue:
 855         return ret;
 856 }
 857
 858 /*
 859  * Rfkill devices
 860  */
 861 static int asus_rfkill_set(void *data, bool blocked)
 862 {
 863         struct asus_rfkill *priv = data;
 864         u32 ctrl_param = !blocked;
 865         u32 dev_id = priv->dev_id;
 866
 867         /*
 868          * If the user bit is set, BIOS can't set and record the wlan status,
 869          * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
 870          * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
 871          * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
 872          * while setting the wlan status through WMI.
 873          * This is also the behavior that windows app will do.
 874          */
 875         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 876              priv->asus->driver->wlan_ctrl_by_user)
 877                 dev_id = ASUS_WMI_DEVID_WLAN_LED;
 878
 879         return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
 880 }
 881
 882 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
 883 {
 884         struct asus_rfkill *priv = data;
 885         int result;
 886
 887         result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
 888
 889         if (result < 0)
 890                 return;
 891
 892         rfkill_set_sw_state(priv->rfkill, !result);
 893 }
 894
 895 static int asus_rfkill_wlan_set(void *data, bool blocked)
 896 {
 897         struct asus_rfkill *priv = data;
 898         struct asus_wmi *asus = priv->asus;
 899         int ret;
 900
 901         /*
 902          * This handler is enabled only if hotplug is enabled.
 903          * In this case, the asus_wmi_set_devstate() will
 904          * trigger a wmi notification and we need to wait
 905          * this call to finish before being able to call
 906          * any wmi method
 907          */
 908         mutex_lock(&asus->wmi_lock);
 909         ret = asus_rfkill_set(data, blocked);
 910         mutex_unlock(&asus->wmi_lock);
 911         return ret;
 912 }
 913
 914 static const struct rfkill_ops asus_rfkill_wlan_ops = {
 915         .set_block = asus_rfkill_wlan_set,
 916         .query = asus_rfkill_query,
 917 };
 918
 919 static const struct rfkill_ops asus_rfkill_ops = {
 920         .set_block = asus_rfkill_set,
 921         .query = asus_rfkill_query,
 922 };
 923
 924 static int asus_new_rfkill(struct asus_wmi *asus,
 925                            struct asus_rfkill *arfkill,
 926                            const char *name, enum rfkill_type type, int dev_id)
 927 {
 928         int result = asus_wmi_get_devstate_simple(asus, dev_id);
 929         struct rfkill **rfkill = &arfkill->rfkill;
 930
 931         if (result < 0)
 932                 return result;
 933
 934         arfkill->dev_id = dev_id;
 935         arfkill->asus = asus;
 936
 937         if (dev_id == ASUS_WMI_DEVID_WLAN &&
 938             asus->driver->quirks->hotplug_wireless)
 939                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 940                                        &asus_rfkill_wlan_ops, arfkill);
 941         else
 942                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
 943                                        &asus_rfkill_ops, arfkill);
 944
 945         if (!*rfkill)
 946                 return -EINVAL;
 947
 948         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
 949                         (asus->driver->quirks->wapf > 0))
 950                 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
 951
 952         rfkill_init_sw_state(*rfkill, !result);
 953         result = rfkill_register(*rfkill);
 954         if (result) {
 955                 rfkill_destroy(*rfkill);
 956                 *rfkill = NULL;
 957                 return result;
 958         }
 959         return 0;
 960 }
 961
 962 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
 963 {
 964         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
 965         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
 966         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
 967         if (asus->wlan.rfkill) {
 968                 rfkill_unregister(asus->wlan.rfkill);
 969                 rfkill_destroy(asus->wlan.rfkill);
 970                 asus->wlan.rfkill = NULL;
 971         }
 972         /*
 973          * Refresh pci hotplug in case the rfkill state was changed after
 974          * asus_unregister_rfkill_notifier()
 975          */
 976         asus_rfkill_hotplug(asus);
 977         if (asus->hotplug_slot)
 978                 pci_hp_deregister(asus->hotplug_slot);
 979         if (asus->hotplug_workqueue)
 980                 destroy_workqueue(asus->hotplug_workqueue);
 981
 982         if (asus->bluetooth.rfkill) {
 983                 rfkill_unregister(asus->bluetooth.rfkill);
 984                 rfkill_destroy(asus->bluetooth.rfkill);
 985                 asus->bluetooth.rfkill = NULL;
 986         }
 987         if (asus->wimax.rfkill) {
 988                 rfkill_unregister(asus->wimax.rfkill);
 989                 rfkill_destroy(asus->wimax.rfkill);
 990                 asus->wimax.rfkill = NULL;
 991         }
 992         if (asus->wwan3g.rfkill) {
 993                 rfkill_unregister(asus->wwan3g.rfkill);
 994                 rfkill_destroy(asus->wwan3g.rfkill);
 995                 asus->wwan3g.rfkill = NULL;
 996         }
 997         if (asus->gps.rfkill) {
 998                 rfkill_unregister(asus->gps.rfkill);
 999                 rfkill_destroy(asus->gps.rfkill);
1000                 asus->gps.rfkill = NULL;
1001         }
1002         if (asus->uwb.rfkill) {
1003                 rfkill_unregister(asus->uwb.rfkill);
1004                 rfkill_destroy(asus->uwb.rfkill);
1005                 asus->uwb.rfkill = NULL;
1006         }
1007 }
1008
1009 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1010 {
1011         int result = 0;
1012
1013         mutex_init(&asus->hotplug_lock);
1014         mutex_init(&asus->wmi_lock);
1015
1016         result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1017                                  RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1018
1019         if (result && result != -ENODEV)
1020                 goto exit;
1021
1022         result = asus_new_rfkill(asus, &asus->bluetooth,
1023                                  "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1024                                  ASUS_WMI_DEVID_BLUETOOTH);
1025
1026         if (result && result != -ENODEV)
1027                 goto exit;
1028
1029         result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1030                                  RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1031
1032         if (result && result != -ENODEV)
1033                 goto exit;
1034
1035         result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1036                                  RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1037
1038         if (result && result != -ENODEV)
1039                 goto exit;
1040
1041         result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1042                                  RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1043
1044         if (result && result != -ENODEV)
1045                 goto exit;
1046
1047         result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1048                                  RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1049
1050         if (result && result != -ENODEV)
1051                 goto exit;
1052
1053         if (!asus->driver->quirks->hotplug_wireless)
1054                 goto exit;
1055
1056         result = asus_setup_pci_hotplug(asus);
1057         /*
1058          * If we get -EBUSY then something else is handling the PCI hotplug -
1059          * don't fail in this case
1060          */
1061         if (result == -EBUSY)
1062                 result = 0;
1063
1064         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1065         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1066         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1067         /*
1068          * Refresh pci hotplug in case the rfkill state was changed during
1069          * setup.
1070          */
1071         asus_rfkill_hotplug(asus);
1072
1073 exit:
1074         if (result && result != -ENODEV)
1075                 asus_wmi_rfkill_exit(asus);
1076
1077         if (result == -ENODEV)
1078                 result = 0;
1079
1080         return result;
1081 }
1082
1083 /*
1084  * Hwmon device
1085  */
1086 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1087                                           int *speed)
1088 {
1089         struct fan_args args = {
1090                 .agfn.len = sizeof(args),
1091                 .agfn.mfun = ASUS_FAN_MFUN,
1092                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1093                 .fan = fan,
1094                 .speed = 0,
1095         };
1096         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1097         int status;
1098
1099         if (fan != 1)
1100                 return -EINVAL;
1101
1102         status = asus_wmi_evaluate_method_agfn(input);
1103
1104         if (status || args.agfn.err)
1105                 return -ENXIO;
1106
1107         if (speed)
1108                 *speed = args.speed;
1109
1110         return 0;
1111 }
1112
1113 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1114                                      int *speed)
1115 {
1116         struct fan_args args = {
1117                 .agfn.len = sizeof(args),
1118                 .agfn.mfun = ASUS_FAN_MFUN,
1119                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1120                 .fan = fan,
1121                 .speed = speed ?  *speed : 0,
1122         };
1123         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1124         int status;
1125
1126         /* 1: for setting 1st fan's speed 0: setting auto mode */
1127         if (fan != 1 && fan != 0)
1128                 return -EINVAL;
1129
1130         status = asus_wmi_evaluate_method_agfn(input);
1131
1132         if (status || args.agfn.err)
1133                 return -ENXIO;
1134
1135         if (speed && fan == 1)
1136                 asus->asus_hwmon_pwm = *speed;
1137
1138         return 0;
1139 }
1140
1141 /*
1142  * Check if we can read the speed of one fan. If true we assume we can also
1143  * control it.
1144  */
1145 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1146 {
1147         int status;
1148         int speed = 0;
1149
1150         *num_fans = 0;
1151
1152         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1153         if (!status)
1154                 *num_fans = 1;
1155
1156         return 0;
1157 }
1158
1159 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1160 {
1161         int status;
1162
1163         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1164         if (status)
1165                 return -ENXIO;
1166
1167         asus->asus_hwmon_fan_manual_mode = false;
1168
1169         return 0;
1170 }
1171
1172 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1173 {
1174         struct asus_wmi *asus = dev_get_drvdata(dev);
1175         int value;
1176         int ret;
1177
1178         /* no speed readable on manual mode */
1179         if (asus->asus_hwmon_fan_manual_mode)
1180                 return -ENXIO;
1181
1182         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1183         if (ret) {
1184                 pr_warn("reading fan speed failed: %d\n", ret);
1185                 return -ENXIO;
1186         }
1187
1188         return value;
1189 }
1190
1191 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1192 {
1193         int err;
1194
1195         if (asus->asus_hwmon_pwm >= 0) {
1196                 *value = asus->asus_hwmon_pwm;
1197                 return;
1198         }
1199
1200         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1201         if (err < 0)
1202                 return;
1203
1204         *value &= 0xFF;
1205
1206         if (*value == 1) /* Low Speed */
1207                 *value = 85;
1208         else if (*value == 2)
1209                 *value = 170;
1210         else if (*value == 3)
1211                 *value = 255;
1212         else if (*value) {
1213                 pr_err("Unknown fan speed %#x\n", *value);
1214                 *value = -1;
1215         }
1216 }
1217
1218 static ssize_t pwm1_show(struct device *dev,
1219                                struct device_attribute *attr,
1220                                char *buf)
1221 {
1222         struct asus_wmi *asus = dev_get_drvdata(dev);
1223         int value;
1224
1225         asus_hwmon_pwm_show(asus, 0, &value);
1226
1227         return sprintf(buf, "%d\n", value);
1228 }
1229
1230 static ssize_t pwm1_store(struct device *dev,
1231                                      struct device_attribute *attr,
1232                                      const char *buf, size_t count) {
1233         struct asus_wmi *asus = dev_get_drvdata(dev);
1234         int value;
1235         int state;
1236         int ret;
1237
1238         ret = kstrtouint(buf, 10, &value);
1239
1240         if (ret)
1241                 return ret;
1242
1243         value = clamp(value, 0, 255);
1244
1245         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1246         if (state)
1247                 pr_warn("Setting fan speed failed: %d\n", state);
1248         else
1249                 asus->asus_hwmon_fan_manual_mode = true;
1250
1251         return count;
1252 }
1253
1254 static ssize_t fan1_input_show(struct device *dev,
1255                                         struct device_attribute *attr,
1256                                         char *buf)
1257 {
1258         int value = asus_hwmon_fan_rpm_show(dev, 0);
1259
1260         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1261
1262 }
1263
1264 static ssize_t pwm1_enable_show(struct device *dev,
1265                                                  struct device_attribute *attr,
1266                                                  char *buf)
1267 {
1268         struct asus_wmi *asus = dev_get_drvdata(dev);
1269
1270         if (asus->asus_hwmon_fan_manual_mode)
1271                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1272
1273         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1274 }
1275
1276 static ssize_t pwm1_enable_store(struct device *dev,
1277                                                   struct device_attribute *attr,
1278                                                   const char *buf, size_t count)
1279 {
1280         struct asus_wmi *asus = dev_get_drvdata(dev);
1281         int status = 0;
1282         int state;
1283         int ret;
1284
1285         ret = kstrtouint(buf, 10, &state);
1286
1287         if (ret)
1288                 return ret;
1289
1290         if (state == ASUS_FAN_CTRL_MANUAL)
1291                 asus->asus_hwmon_fan_manual_mode = true;
1292         else
1293                 status = asus_hwmon_fan_set_auto(asus);
1294
1295         if (status)
1296                 return status;
1297
1298         return count;
1299 }
1300
1301 static ssize_t fan1_label_show(struct device *dev,
1302                                           struct device_attribute *attr,
1303                                           char *buf)
1304 {
1305         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1306 }
1307
1308 static ssize_t asus_hwmon_temp1(struct device *dev,
1309                                 struct device_attribute *attr,
1310                                 char *buf)
1311 {
1312         struct asus_wmi *asus = dev_get_drvdata(dev);
1313         u32 value;
1314         int err;
1315
1316         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1317
1318         if (err < 0)
1319                 return err;
1320
1321         value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1322
1323         return sprintf(buf, "%d\n", value);
1324 }
1325
1326 /* Fan1 */
1327 static DEVICE_ATTR_RW(pwm1);
1328 static DEVICE_ATTR_RW(pwm1_enable);
1329 static DEVICE_ATTR_RO(fan1_input);
1330 static DEVICE_ATTR_RO(fan1_label);
1331
1332 /* Temperature */
1333 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1334
1335 static struct attribute *hwmon_attributes[] = {
1336         &dev_attr_pwm1.attr,
1337         &dev_attr_pwm1_enable.attr,
1338         &dev_attr_fan1_input.attr,
1339         &dev_attr_fan1_label.attr,
1340
1341         &dev_attr_temp1_input.attr,
1342         NULL
1343 };
1344
1345 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1346                                           struct attribute *attr, int idx)
1347 {
1348         struct device *dev = container_of(kobj, struct device, kobj);
1349         struct platform_device *pdev = to_platform_device(dev->parent);
1350         struct asus_wmi *asus = platform_get_drvdata(pdev);
1351         int dev_id = -1;
1352         int fan_attr = -1;
1353         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1354         bool ok = true;
1355
1356         if (attr == &dev_attr_pwm1.attr)
1357                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1358         else if (attr == &dev_attr_temp1_input.attr)
1359                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1360
1361
1362         if (attr == &dev_attr_fan1_input.attr
1363             || attr == &dev_attr_fan1_label.attr
1364             || attr == &dev_attr_pwm1.attr
1365             || attr == &dev_attr_pwm1_enable.attr) {
1366                 fan_attr = 1;
1367         }
1368
1369         if (dev_id != -1) {
1370                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1371
1372                 if (err < 0 && fan_attr == -1)
1373                         return 0; /* can't return negative here */
1374         }
1375
1376         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1377                 /*
1378                  * We need to find a better way, probably using sfun,
1379                  * bits or spec ...
1380                  * Currently we disable it if:
1381                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1382                  * - reverved bits are non-zero
1383                  * - sfun and presence bit are not set
1384                  */
1385                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1386                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1387                         ok = false;
1388                 else
1389                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1390         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1391                 /* If value is zero, something is clearly wrong */
1392                 if (!value)
1393                         ok = false;
1394         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1395                 ok = true;
1396         } else {
1397                 ok = false;
1398         }
1399
1400         return ok ? attr->mode : 0;
1401 }
1402
1403 static struct attribute_group hwmon_attribute_group = {
1404         .is_visible = asus_hwmon_sysfs_is_visible,
1405         .attrs = hwmon_attributes
1406 };
1407 __ATTRIBUTE_GROUPS(hwmon_attribute);
1408
1409 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1410 {
1411         struct device *hwmon;
1412
1413         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1414                                                   "asus", asus,
1415                                                   hwmon_attribute_groups);
1416         if (IS_ERR(hwmon)) {
1417                 pr_err("Could not register asus hwmon device\n");
1418                 return PTR_ERR(hwmon);
1419         }
1420         return 0;
1421 }
1422
1423 /*
1424  * Backlight
1425  */
1426 static int read_backlight_power(struct asus_wmi *asus)
1427 {
1428         int ret;
1429         if (asus->driver->quirks->store_backlight_power)
1430                 ret = !asus->driver->panel_power;
1431         else
1432                 ret = asus_wmi_get_devstate_simple(asus,
1433                                                    ASUS_WMI_DEVID_BACKLIGHT);
1434
1435         if (ret < 0)
1436                 return ret;
1437
1438         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1439 }
1440
1441 static int read_brightness_max(struct asus_wmi *asus)
1442 {
1443         u32 retval;
1444         int err;
1445
1446         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1447
1448         if (err < 0)
1449                 return err;
1450
1451         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1452         retval >>= 8;
1453
1454         if (!retval)
1455                 return -ENODEV;
1456
1457         return retval;
1458 }
1459
1460 static int read_brightness(struct backlight_device *bd)
1461 {
1462         struct asus_wmi *asus = bl_get_data(bd);
1463         u32 retval;
1464         int err;
1465
1466         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1467
1468         if (err < 0)
1469                 return err;
1470
1471         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1472 }
1473
1474 static u32 get_scalar_command(struct backlight_device *bd)
1475 {
1476         struct asus_wmi *asus = bl_get_data(bd);
1477         u32 ctrl_param = 0;
1478
1479         if ((asus->driver->brightness < bd->props.brightness) ||
1480             bd->props.brightness == bd->props.max_brightness)
1481                 ctrl_param = 0x00008001;
1482         else if ((asus->driver->brightness > bd->props.brightness) ||
1483                  bd->props.brightness == 0)
1484                 ctrl_param = 0x00008000;
1485
1486         asus->driver->brightness = bd->props.brightness;
1487
1488         return ctrl_param;
1489 }
1490
1491 static int update_bl_status(struct backlight_device *bd)
1492 {
1493         struct asus_wmi *asus = bl_get_data(bd);
1494         u32 ctrl_param;
1495         int power, err = 0;
1496
1497         power = read_backlight_power(asus);
1498         if (power != -ENODEV && bd->props.power != power) {
1499                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1500                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1501                                             ctrl_param, NULL);
1502                 if (asus->driver->quirks->store_backlight_power)
1503                         asus->driver->panel_power = bd->props.power;
1504
1505                 /* When using scalar brightness, updating the brightness
1506                  * will mess with the backlight power */
1507                 if (asus->driver->quirks->scalar_panel_brightness)
1508                         return err;
1509         }
1510
1511         if (asus->driver->quirks->scalar_panel_brightness)
1512                 ctrl_param = get_scalar_command(bd);
1513         else
1514                 ctrl_param = bd->props.brightness;
1515
1516         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1517                                     ctrl_param, NULL);
1518
1519         return err;
1520 }
1521
1522 static const struct backlight_ops asus_wmi_bl_ops = {
1523         .get_brightness = read_brightness,
1524         .update_status = update_bl_status,
1525 };
1526
1527 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1528 {
1529         struct backlight_device *bd = asus->backlight_device;
1530         int old = bd->props.brightness;
1531         int new = old;
1532
1533         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1534                 new = code - NOTIFY_BRNUP_MIN + 1;
1535         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1536                 new = code - NOTIFY_BRNDOWN_MIN;
1537
1538         bd->props.brightness = new;
1539         backlight_update_status(bd);
1540         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1541
1542         return old;
1543 }
1544
1545 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1546 {
1547         struct backlight_device *bd;
1548         struct backlight_properties props;
1549         int max;
1550         int power;
1551
1552         max = read_brightness_max(asus);
1553         if (max < 0)
1554                 return max;
1555
1556         power = read_backlight_power(asus);
1557
1558         if (power == -ENODEV)
1559                 power = FB_BLANK_UNBLANK;
1560         else if (power < 0)
1561                 return power;
1562
1563         memset(&props, 0, sizeof(struct backlight_properties));
1564         props.type = BACKLIGHT_PLATFORM;
1565         props.max_brightness = max;
1566         bd = backlight_device_register(asus->driver->name,
1567                                        &asus->platform_device->dev, asus,
1568                                        &asus_wmi_bl_ops, &props);
1569         if (IS_ERR(bd)) {
1570                 pr_err("Could not register backlight device\n");
1571                 return PTR_ERR(bd);
1572         }
1573
1574         asus->backlight_device = bd;
1575
1576         if (asus->driver->quirks->store_backlight_power)
1577                 asus->driver->panel_power = power;
1578
1579         bd->props.brightness = read_brightness(bd);
1580         bd->props.power = power;
1581         backlight_update_status(bd);
1582
1583         asus->driver->brightness = bd->props.brightness;
1584
1585         return 0;
1586 }
1587
1588 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1589 {
1590         backlight_device_unregister(asus->backlight_device);
1591
1592         asus->backlight_device = NULL;
1593 }
1594
1595 static int is_display_toggle(int code)
1596 {
1597         /* display toggle keys */
1598         if ((code >= 0x61 && code <= 0x67) ||
1599             (code >= 0x8c && code <= 0x93) ||
1600             (code >= 0xa0 && code <= 0xa7) ||
1601             (code >= 0xd0 && code <= 0xd5))
1602                 return 1;
1603
1604         return 0;
1605 }
1606
1607 static void asus_wmi_notify(u32 value, void *context)
1608 {
1609         struct asus_wmi *asus = context;
1610         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1611         union acpi_object *obj;
1612         acpi_status status;
1613         int code;
1614         int orig_code;
1615         unsigned int key_value = 1;
1616         bool autorelease = 1;
1617
1618         status = wmi_get_event_data(value, &response);
1619         if (status != AE_OK) {
1620                 pr_err("bad event status 0x%x\n", status);
1621                 return;
1622         }
1623
1624         obj = (union acpi_object *)response.pointer;
1625
1626         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1627                 goto exit;
1628
1629         code = obj->integer.value;
1630         orig_code = code;
1631
1632         if (asus->driver->key_filter) {
1633                 asus->driver->key_filter(asus->driver, &code, &key_value,
1634                                          &autorelease);
1635                 if (code == ASUS_WMI_KEY_IGNORE)
1636                         goto exit;
1637         }
1638
1639         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1640                 code = ASUS_WMI_BRN_UP;
1641         else if (code >= NOTIFY_BRNDOWN_MIN &&
1642                  code <= NOTIFY_BRNDOWN_MAX)
1643                 code = ASUS_WMI_BRN_DOWN;
1644
1645         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1646                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1647                         asus_wmi_backlight_notify(asus, orig_code);
1648                         goto exit;
1649                 }
1650         }
1651
1652         if (is_display_toggle(code) &&
1653             asus->driver->quirks->no_display_toggle)
1654                 goto exit;
1655
1656         if (!sparse_keymap_report_event(asus->inputdev, code,
1657                                         key_value, autorelease))
1658                 pr_info("Unknown key %x pressed\n", code);
1659
1660 exit:
1661         kfree(obj);
1662 }
1663
1664 /*
1665  * Sys helpers
1666  */
1667 static int parse_arg(const char *buf, unsigned long count, int *val)
1668 {
1669         if (!count)
1670                 return 0;
1671         if (sscanf(buf, "%i", val) != 1)
1672                 return -EINVAL;
1673         return count;
1674 }
1675
1676 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1677                              const char *buf, size_t count)
1678 {
1679         u32 retval;
1680         int rv, err, value;
1681
1682         value = asus_wmi_get_devstate_simple(asus, devid);
1683         if (value == -ENODEV)   /* Check device presence */
1684                 return value;
1685
1686         rv = parse_arg(buf, count, &value);
1687         err = asus_wmi_set_devstate(devid, value, &retval);
1688
1689         if (err < 0)
1690                 return err;
1691
1692         return rv;
1693 }
1694
1695 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1696 {
1697         int value = asus_wmi_get_devstate_simple(asus, devid);
1698
1699         if (value < 0)
1700                 return value;
1701
1702         return sprintf(buf, "%d\n", value);
1703 }
1704
1705 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1706         static ssize_t show_##_name(struct device *dev,                 \
1707                                     struct device_attribute *attr,      \
1708                                     char *buf)                          \
1709         {                                                               \
1710                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1711                                                                         \
1712                 return show_sys_wmi(asus, _cm, buf);                    \
1713         }                                                               \
1714         static ssize_t store_##_name(struct device *dev,                \
1715                                      struct device_attribute *attr,     \
1716                                      const char *buf, size_t count)     \
1717         {                                                               \
1718                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1719                                                                         \
1720                 return store_sys_wmi(asus, _cm, buf, count);            \
1721         }                                                               \
1722         static struct device_attribute dev_attr_##_name = {             \
1723                 .attr = {                                               \
1724                         .name = __stringify(_name),                     \
1725                         .mode = _mode },                                \
1726                 .show   = show_##_name,                                 \
1727                 .store  = store_##_name,                                \
1728         }
1729
1730 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1731 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1732 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1733 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1734
1735 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1736                            const char *buf, size_t count)
1737 {
1738         int value, rv;
1739
1740         if (!count || sscanf(buf, "%i", &value) != 1)
1741                 return -EINVAL;
1742         if (value < 0 || value > 2)
1743                 return -EINVAL;
1744
1745         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1746         if (rv < 0)
1747                 return rv;
1748
1749         return count;
1750 }
1751
1752 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1753
1754 static struct attribute *platform_attributes[] = {
1755         &dev_attr_cpufv.attr,
1756         &dev_attr_camera.attr,
1757         &dev_attr_cardr.attr,
1758         &dev_attr_touchpad.attr,
1759         &dev_attr_lid_resume.attr,
1760         NULL
1761 };
1762
1763 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1764                                     struct attribute *attr, int idx)
1765 {
1766         struct device *dev = container_of(kobj, struct device, kobj);
1767         struct platform_device *pdev = to_platform_device(dev);
1768         struct asus_wmi *asus = platform_get_drvdata(pdev);
1769         bool ok = true;
1770         int devid = -1;
1771
1772         if (attr == &dev_attr_camera.attr)
1773                 devid = ASUS_WMI_DEVID_CAMERA;
1774         else if (attr == &dev_attr_cardr.attr)
1775                 devid = ASUS_WMI_DEVID_CARDREADER;
1776         else if (attr == &dev_attr_touchpad.attr)
1777                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1778         else if (attr == &dev_attr_lid_resume.attr)
1779                 devid = ASUS_WMI_DEVID_LID_RESUME;
1780
1781         if (devid != -1)
1782                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1783
1784         return ok ? attr->mode : 0;
1785 }
1786
1787 static struct attribute_group platform_attribute_group = {
1788         .is_visible = asus_sysfs_is_visible,
1789         .attrs = platform_attributes
1790 };
1791
1792 static void asus_wmi_sysfs_exit(struct platform_device *device)
1793 {
1794         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1795 }
1796
1797 static int asus_wmi_sysfs_init(struct platform_device *device)
1798 {
1799         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1800 }
1801
1802 /*
1803  * Platform device
1804  */
1805 static int asus_wmi_platform_init(struct asus_wmi *asus)
1806 {
1807         int rv;
1808
1809         /* INIT enable hotkeys on some models */
1810         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1811                 pr_info("Initialization: %#x\n", rv);
1812
1813         /* We don't know yet what to do with this version... */
1814         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1815                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1816                 asus->spec = rv;
1817         }
1818
1819         /*
1820          * The SFUN method probably allows the original driver to get the list
1821          * of features supported by a given model. For now, 0x0100 or 0x0800
1822          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1823          * The significance of others is yet to be found.
1824          */
1825         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1826                 pr_info("SFUN value: %#x\n", rv);
1827                 asus->sfun = rv;
1828         }
1829
1830         /*
1831          * Eee PC and Notebooks seems to have different method_id for DSTS,
1832          * but it may also be related to the BIOS's SPEC.
1833          * Note, on most Eeepc, there is no way to check if a method exist
1834          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1835          * but once again, SPEC may probably be used for that kind of things.
1836          */
1837         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1838                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1839         else
1840                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1841
1842         /* CWAP allow to define the behavior of the Fn+F2 key,
1843          * this method doesn't seems to be present on Eee PCs */
1844         if (asus->driver->quirks->wapf >= 0)
1845                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1846                                       asus->driver->quirks->wapf, NULL);
1847
1848         return asus_wmi_sysfs_init(asus->platform_device);
1849 }
1850
1851 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1852 {
1853         asus_wmi_sysfs_exit(asus->platform_device);
1854 }
1855
1856 /*
1857  * debugfs
1858  */
1859 struct asus_wmi_debugfs_node {
1860         struct asus_wmi *asus;
1861         char *name;
1862         int (*show) (struct seq_file *m, void *data);
1863 };
1864
1865 static int show_dsts(struct seq_file *m, void *data)
1866 {
1867         struct asus_wmi *asus = m->private;
1868         int err;
1869         u32 retval = -1;
1870
1871         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1872
1873         if (err < 0)
1874                 return err;
1875
1876         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1877
1878         return 0;
1879 }
1880
1881 static int show_devs(struct seq_file *m, void *data)
1882 {
1883         struct asus_wmi *asus = m->private;
1884         int err;
1885         u32 retval = -1;
1886
1887         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1888                                     &retval);
1889
1890         if (err < 0)
1891                 return err;
1892
1893         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1894                    asus->debug.ctrl_param, retval);
1895
1896         return 0;
1897 }
1898
1899 static int show_call(struct seq_file *m, void *data)
1900 {
1901         struct asus_wmi *asus = m->private;
1902         struct bios_args args = {
1903                 .arg0 = asus->debug.dev_id,
1904                 .arg1 = asus->debug.ctrl_param,
1905         };
1906         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1907         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1908         union acpi_object *obj;
1909         acpi_status status;
1910
1911         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1912                                      1, asus->debug.method_id,
1913                                      &input, &output);
1914
1915         if (ACPI_FAILURE(status))
1916                 return -EIO;
1917
1918         obj = (union acpi_object *)output.pointer;
1919         if (obj && obj->type == ACPI_TYPE_INTEGER)
1920                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1921                            asus->debug.dev_id, asus->debug.ctrl_param,
1922                            (u32) obj->integer.value);
1923         else
1924                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1925                            asus->debug.dev_id, asus->debug.ctrl_param,
1926                            obj ? obj->type : -1);
1927
1928         kfree(obj);
1929
1930         return 0;
1931 }
1932
1933 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1934         {NULL, "devs", show_devs},
1935         {NULL, "dsts", show_dsts},
1936         {NULL, "call", show_call},
1937 };
1938
1939 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1940 {
1941         struct asus_wmi_debugfs_node *node = inode->i_private;
1942
1943         return single_open(file, node->show, node->asus);
1944 }
1945
1946 static const struct file_operations asus_wmi_debugfs_io_ops = {
1947         .owner = THIS_MODULE,
1948         .open = asus_wmi_debugfs_open,
1949         .read = seq_read,
1950         .llseek = seq_lseek,
1951         .release = single_release,
1952 };
1953
1954 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1955 {
1956         debugfs_remove_recursive(asus->debug.root);
1957 }
1958
1959 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1960 {
1961         struct dentry *dent;
1962         int i;
1963
1964         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1965         if (!asus->debug.root) {
1966                 pr_err("failed to create debugfs directory\n");
1967                 goto error_debugfs;
1968         }
1969
1970         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1971                                   asus->debug.root, &asus->debug.method_id);
1972         if (!dent)
1973                 goto error_debugfs;
1974
1975         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1976                                   asus->debug.root, &asus->debug.dev_id);
1977         if (!dent)
1978                 goto error_debugfs;
1979
1980         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1981                                   asus->debug.root, &asus->debug.ctrl_param);
1982         if (!dent)
1983                 goto error_debugfs;
1984
1985         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1986                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1987
1988                 node->asus = asus;
1989                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1990                                            asus->debug.root, node,
1991                                            &asus_wmi_debugfs_io_ops);
1992                 if (!dent) {
1993                         pr_err("failed to create debug file: %s\n", node->name);
1994                         goto error_debugfs;
1995                 }
1996         }
1997
1998         return 0;
1999
2000 error_debugfs:
2001         asus_wmi_debugfs_exit(asus);
2002         return -ENOMEM;
2003 }
2004
2005 static int asus_wmi_fan_init(struct asus_wmi *asus)
2006 {
2007         int status;
2008
2009         asus->asus_hwmon_pwm = -1;
2010         asus->asus_hwmon_num_fans = -1;
2011         asus->asus_hwmon_fan_manual_mode = false;
2012
2013         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2014         if (status) {
2015                 asus->asus_hwmon_num_fans = 0;
2016                 pr_warn("Could not determine number of fans: %d\n", status);
2017                 return -ENXIO;
2018         }
2019
2020         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2021         return 0;
2022 }
2023
2024 /*
2025  * WMI Driver
2026  */
2027 static int asus_wmi_add(struct platform_device *pdev)
2028 {
2029         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2030         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2031         struct asus_wmi *asus;
2032         const char *chassis_type;
2033         acpi_status status;
2034         int err;
2035         u32 result;
2036
2037         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2038         if (!asus)
2039                 return -ENOMEM;
2040
2041         asus->driver = wdrv;
2042         asus->platform_device = pdev;
2043         wdrv->platform_device = pdev;
2044         platform_set_drvdata(asus->platform_device, asus);
2045
2046         if (wdrv->detect_quirks)
2047                 wdrv->detect_quirks(asus->driver);
2048
2049         err = asus_wmi_platform_init(asus);
2050         if (err)
2051                 goto fail_platform;
2052
2053         err = asus_wmi_input_init(asus);
2054         if (err)
2055                 goto fail_input;
2056
2057         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2058         asus_hwmon_fan_set_auto(asus);
2059
2060         err = asus_wmi_hwmon_init(asus);
2061         if (err)
2062                 goto fail_hwmon;
2063
2064         err = asus_wmi_led_init(asus);
2065         if (err)
2066                 goto fail_leds;
2067
2068         err = asus_wmi_rfkill_init(asus);
2069         if (err)
2070                 goto fail_rfkill;
2071
2072         /* Some Asus desktop boards export an acpi-video backlight interface,
2073            stop this from showing up */
2074         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2075         if (chassis_type && !strcmp(chassis_type, "3"))
2076                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2077
2078         if (asus->driver->quirks->wmi_backlight_power)
2079                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2080
2081         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2082                 err = asus_wmi_backlight_init(asus);
2083                 if (err && err != -ENODEV)
2084                         goto fail_backlight;
2085         }
2086
2087         status = wmi_install_notify_handler(asus->driver->event_guid,
2088                                             asus_wmi_notify, asus);
2089         if (ACPI_FAILURE(status)) {
2090                 pr_err("Unable to register notify handler - %d\n", status);
2091                 err = -ENODEV;
2092                 goto fail_wmi_handler;
2093         }
2094
2095         err = asus_wmi_debugfs_init(asus);
2096         if (err)
2097                 goto fail_debugfs;
2098
2099         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2100         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2101                 asus->driver->wlan_ctrl_by_user = 1;
2102
2103         return 0;
2104
2105 fail_debugfs:
2106         wmi_remove_notify_handler(asus->driver->event_guid);
2107 fail_wmi_handler:
2108         asus_wmi_backlight_exit(asus);
2109 fail_backlight:
2110         asus_wmi_rfkill_exit(asus);
2111 fail_rfkill:
2112         asus_wmi_led_exit(asus);
2113 fail_leds:
2114 fail_hwmon:
2115         asus_wmi_input_exit(asus);
2116 fail_input:
2117         asus_wmi_platform_exit(asus);
2118 fail_platform:
2119         kfree(asus);
2120         return err;
2121 }
2122
2123 static int asus_wmi_remove(struct platform_device *device)
2124 {
2125         struct asus_wmi *asus;
2126
2127         asus = platform_get_drvdata(device);
2128         wmi_remove_notify_handler(asus->driver->event_guid);
2129         asus_wmi_backlight_exit(asus);
2130         asus_wmi_input_exit(asus);
2131         asus_wmi_led_exit(asus);
2132         asus_wmi_rfkill_exit(asus);
2133         asus_wmi_debugfs_exit(asus);
2134         asus_wmi_platform_exit(asus);
2135         asus_hwmon_fan_set_auto(asus);
2136
2137         kfree(asus);
2138         return 0;
2139 }
2140
2141 /*
2142  * Platform driver - hibernate/resume callbacks
2143  */
2144 static int asus_hotk_thaw(struct device *device)
2145 {
2146         struct asus_wmi *asus = dev_get_drvdata(device);
2147
2148         if (asus->wlan.rfkill) {
2149                 bool wlan;
2150
2151                 /*
2152                  * Work around bios bug - acpi _PTS turns off the wireless led
2153                  * during suspend.  Normally it restores it on resume, but
2154                  * we should kick it ourselves in case hibernation is aborted.
2155                  */
2156                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2157                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2158         }
2159
2160         return 0;
2161 }
2162
2163 static int asus_hotk_restore(struct device *device)
2164 {
2165         struct asus_wmi *asus = dev_get_drvdata(device);
2166         int bl;
2167
2168         /* Refresh both wlan rfkill state and pci hotplug */
2169         if (asus->wlan.rfkill)
2170                 asus_rfkill_hotplug(asus);
2171
2172         if (asus->bluetooth.rfkill) {
2173                 bl = !asus_wmi_get_devstate_simple(asus,
2174                                                    ASUS_WMI_DEVID_BLUETOOTH);
2175                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2176         }
2177         if (asus->wimax.rfkill) {
2178                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2179                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2180         }
2181         if (asus->wwan3g.rfkill) {
2182                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2183                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2184         }
2185         if (asus->gps.rfkill) {
2186                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2187                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2188         }
2189         if (asus->uwb.rfkill) {
2190                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2191                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2192         }
2193
2194         return 0;
2195 }
2196
2197 static const struct dev_pm_ops asus_pm_ops = {
2198         .thaw = asus_hotk_thaw,
2199         .restore = asus_hotk_restore,
2200 };
2201
2202 static int asus_wmi_probe(struct platform_device *pdev)
2203 {
2204         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2205         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2206         int ret;
2207
2208         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2209                 pr_warn("Management GUID not found\n");
2210                 return -ENODEV;
2211         }
2212
2213         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2214                 pr_warn("Event GUID not found\n");
2215                 return -ENODEV;
2216         }
2217
2218         if (wdrv->probe) {
2219                 ret = wdrv->probe(pdev);
2220                 if (ret)
2221                         return ret;
2222         }
2223
2224         return asus_wmi_add(pdev);
2225 }
2226
2227 static bool used;
2228
2229 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2230 {
2231         struct platform_driver *platform_driver;
2232         struct platform_device *platform_device;
2233
2234         if (used)
2235                 return -EBUSY;
2236
2237         platform_driver = &driver->platform_driver;
2238         platform_driver->remove = asus_wmi_remove;
2239         platform_driver->driver.owner = driver->owner;
2240         platform_driver->driver.name = driver->name;
2241         platform_driver->driver.pm = &asus_pm_ops;
2242
2243         platform_device = platform_create_bundle(platform_driver,
2244                                                  asus_wmi_probe,
2245                                                  NULL, 0, NULL, 0);
2246         if (IS_ERR(platform_device))
2247                 return PTR_ERR(platform_device);
2248
2249         used = true;
2250         return 0;
2251 }
2252 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2253
2254 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2255 {
2256         platform_device_unregister(driver->platform_device);
2257         platform_driver_unregister(&driver->platform_driver);
2258         used = false;
2259 }
2260 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2261
2262 static int __init asus_wmi_init(void)
2263 {
2264         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2265                 pr_info("Asus Management GUID not found\n");
2266                 return -ENODEV;
2267         }
2268
2269         pr_info("ASUS WMI generic driver loaded\n");
2270         return 0;
2271 }
2272
2273 static void __exit asus_wmi_exit(void)
2274 {
2275         pr_info("ASUS WMI generic driver unloaded\n");
2276 }
2277
2278 module_init(asus_wmi_init);
2279 module_exit(asus_wmi_exit);