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_ALS_ENABLE       0x00050001 /* Ambient Light Sensor */
 121 #define ASUS_WMI_DEVID_BACKLIGHT        0x00050011
 122 #define ASUS_WMI_DEVID_BRIGHTNESS       0x00050012
 123 #define ASUS_WMI_DEVID_KBD_BACKLIGHT    0x00050021
 124 #define ASUS_WMI_DEVID_LIGHT_SENSOR     0x00050022 /* ?? */
 125
 126 /* Misc */
 127 #define ASUS_WMI_DEVID_CAMERA           0x00060013
 128
 129 /* Storage */
 130 #define ASUS_WMI_DEVID_CARDREADER       0x00080013
 131
 132 /* Input */
 133 #define ASUS_WMI_DEVID_TOUCHPAD         0x00100011
 134 #define ASUS_WMI_DEVID_TOUCHPAD_LED     0x00100012
 135
 136 /* Fan, Thermal */
 137 #define ASUS_WMI_DEVID_THERMAL_CTRL     0x00110011
 138 #define ASUS_WMI_DEVID_FAN_CTRL         0x00110012
 139
 140 /* Power */
 141 #define ASUS_WMI_DEVID_PROCESSOR_STATE  0x00120012
 142
 143 /* Deep S3 / Resume on LID open */
 144 #define ASUS_WMI_DEVID_LID_RESUME       0x00120031
 145
 146 /* DSTS masks */
 147 #define ASUS_WMI_DSTS_STATUS_BIT        0x00000001
 148 #define ASUS_WMI_DSTS_UNKNOWN_BIT       0x00000002
 149 #define ASUS_WMI_DSTS_PRESENCE_BIT      0x00010000
 150 #define ASUS_WMI_DSTS_USER_BIT          0x00020000
 151 #define ASUS_WMI_DSTS_BIOS_BIT          0x00040000
 152 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK   0x000000FF
 153 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK   0x0000FF00
 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 struct bios_args {
 166         u32 arg0;
 167         u32 arg1;
 168 } __packed;
 169
 170 /*
 171  * Struct that's used for all methods called via AGFN. Naming is
 172  * identically to the AML code.
 173  */
 174 struct agfn_args {
 175         u16 mfun; /* probably "Multi-function" to be called */
 176         u16 sfun; /* probably "Sub-function" to be called */
 177         u16 len;  /* size of the hole struct, including subfunction fields */
 178         u8 stas;  /* not used by now */
 179         u8 err;   /* zero on success */
 180 } __packed;
 181
 182 /* struct used for calling fan read and write methods */
 183 struct fan_args {
 184         struct agfn_args agfn;  /* common fields */
 185         u8 fan;                 /* fan number: 0: set auto mode 1: 1st fan */
 186         u32 speed;              /* read: RPM/100 - write: 0-255 */
 187 } __packed;
 188
 189 /*
 190  * <platform>/    - debugfs root directory
 191  *   dev_id      - current dev_id
 192  *   ctrl_param  - current ctrl_param
 193  *   method_id   - current method_id
 194  *   devs        - call DEVS(dev_id, ctrl_param) and print result
 195  *   dsts        - call DSTS(dev_id)  and print result
 196  *   call        - call method_id(dev_id, ctrl_param) and print result
 197  */
 198 struct asus_wmi_debug {
 199         struct dentry *root;
 200         u32 method_id;
 201         u32 dev_id;
 202         u32 ctrl_param;
 203 };
 204
 205 struct asus_rfkill {
 206         struct asus_wmi *asus;
 207         struct rfkill *rfkill;
 208         u32 dev_id;
 209 };
 210
 211 struct asus_wmi {
 212         int dsts_id;
 213         int spec;
 214         int sfun;
 215
 216         struct input_dev *inputdev;
 217         struct backlight_device *backlight_device;
 218         struct platform_device *platform_device;
 219
 220         struct led_classdev wlan_led;
 221         int wlan_led_wk;
 222         struct led_classdev tpd_led;
 223         int tpd_led_wk;
 224         struct led_classdev kbd_led;
 225         int kbd_led_wk;
 226         struct workqueue_struct *led_workqueue;
 227         struct work_struct tpd_led_work;
 228         struct work_struct kbd_led_work;
 229         struct work_struct wlan_led_work;
 230
 231         struct asus_rfkill wlan;
 232         struct asus_rfkill bluetooth;
 233         struct asus_rfkill wimax;
 234         struct asus_rfkill wwan3g;
 235         struct asus_rfkill gps;
 236         struct asus_rfkill uwb;
 237
 238         bool asus_hwmon_fan_manual_mode;
 239         int asus_hwmon_num_fans;
 240         int asus_hwmon_pwm;
 241
 242         struct hotplug_slot *hotplug_slot;
 243         struct mutex hotplug_lock;
 244         struct mutex wmi_lock;
 245         struct workqueue_struct *hotplug_workqueue;
 246         struct work_struct hotplug_work;
 247
 248         struct asus_wmi_debug debug;
 249
 250         struct asus_wmi_driver *driver;
 251 };
 252
 253 static int asus_wmi_input_init(struct asus_wmi *asus)
 254 {
 255         int err;
 256
 257         asus->inputdev = input_allocate_device();
 258         if (!asus->inputdev)
 259                 return -ENOMEM;
 260
 261         asus->inputdev->name = asus->driver->input_name;
 262         asus->inputdev->phys = asus->driver->input_phys;
 263         asus->inputdev->id.bustype = BUS_HOST;
 264         asus->inputdev->dev.parent = &asus->platform_device->dev;
 265         set_bit(EV_REP, asus->inputdev->evbit);
 266
 267         err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
 268         if (err)
 269                 goto err_free_dev;
 270
 271         err = input_register_device(asus->inputdev);
 272         if (err)
 273                 goto err_free_keymap;
 274
 275         return 0;
 276
 277 err_free_keymap:
 278         sparse_keymap_free(asus->inputdev);
 279 err_free_dev:
 280         input_free_device(asus->inputdev);
 281         return err;
 282 }
 283
 284 static void asus_wmi_input_exit(struct asus_wmi *asus)
 285 {
 286         if (asus->inputdev) {
 287                 sparse_keymap_free(asus->inputdev);
 288                 input_unregister_device(asus->inputdev);
 289         }
 290
 291         asus->inputdev = NULL;
 292 }
 293
 294 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
 295                                     u32 *retval)
 296 {
 297         struct bios_args args = {
 298                 .arg0 = arg0,
 299                 .arg1 = arg1,
 300         };
 301         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
 302         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 303         acpi_status status;
 304         union acpi_object *obj;
 305         u32 tmp = 0;
 306
 307         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
 308                                      &input, &output);
 309
 310         if (ACPI_FAILURE(status))
 311                 goto exit;
 312
 313         obj = (union acpi_object *)output.pointer;
 314         if (obj && obj->type == ACPI_TYPE_INTEGER)
 315                 tmp = (u32) obj->integer.value;
 316
 317         if (retval)
 318                 *retval = tmp;
 319
 320         kfree(obj);
 321
 322 exit:
 323         if (ACPI_FAILURE(status))
 324                 return -EIO;
 325
 326         if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
 327                 return -ENODEV;
 328
 329         return 0;
 330 }
 331
 332 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
 333 {
 334         struct acpi_buffer input;
 335         u64 phys_addr;
 336         u32 retval;
 337         u32 status = -1;
 338
 339         /*
 340          * Copy to dma capable address otherwise memory corruption occurs as
 341          * bios has to be able to access it.
 342          */
 343         input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
 344         input.length = args.length;
 345         if (!input.pointer)
 346                 return -ENOMEM;
 347         phys_addr = virt_to_phys(input.pointer);
 348         memcpy(input.pointer, args.pointer, args.length);
 349
 350         status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
 351                                         phys_addr, 0, &retval);
 352         if (!status)
 353                 memcpy(args.pointer, input.pointer, args.length);
 354
 355         kfree(input.pointer);
 356         if (status)
 357                 return -ENXIO;
 358
 359         return retval;
 360 }
 361
 362 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
 363 {
 364         return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
 365 }
 366
 367 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
 368                                  u32 *retval)
 369 {
 370         return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
 371                                         ctrl_param, retval);
 372 }
 373
 374 /* Helper for special devices with magic return codes */
 375 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
 376                                       u32 dev_id, u32 mask)
 377 {
 378         u32 retval = 0;
 379         int err;
 380
 381         err = asus_wmi_get_devstate(asus, dev_id, &retval);
 382
 383         if (err < 0)
 384                 return err;
 385
 386         if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
 387                 return -ENODEV;
 388
 389         if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
 390                 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
 391                         return -ENODEV;
 392         }
 393
 394         return retval & mask;
 395 }
 396
 397 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
 398 {
 399         return asus_wmi_get_devstate_bits(asus, dev_id,
 400                                           ASUS_WMI_DSTS_STATUS_BIT);
 401 }
 402
 403 /*
 404  * LEDs
 405  */
 406 /*
 407  * These functions actually update the LED's, and are called from a
 408  * workqueue. By doing this as separate work rather than when the LED
 409  * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 410  * potentially bad time, such as a timer interrupt.
 411  */
 412 static void tpd_led_update(struct work_struct *work)
 413 {
 414         int ctrl_param;
 415         struct asus_wmi *asus;
 416
 417         asus = container_of(work, struct asus_wmi, tpd_led_work);
 418
 419         ctrl_param = asus->tpd_led_wk;
 420         asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
 421 }
 422
 423 static void tpd_led_set(struct led_classdev *led_cdev,
 424                         enum led_brightness value)
 425 {
 426         struct asus_wmi *asus;
 427
 428         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 429
 430         asus->tpd_led_wk = !!value;
 431         queue_work(asus->led_workqueue, &asus->tpd_led_work);
 432 }
 433
 434 static int read_tpd_led_state(struct asus_wmi *asus)
 435 {
 436         return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
 437 }
 438
 439 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
 440 {
 441         struct asus_wmi *asus;
 442
 443         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
 444
 445         return read_tpd_led_state(asus);
 446 }
 447
 448 static void kbd_led_update(struct work_struct *work)
 449 {
 450         int ctrl_param = 0;
 451         struct asus_wmi *asus;
 452
 453         asus = container_of(work, struct asus_wmi, kbd_led_work);
 454
 455         ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
 456         asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
 457 }
 458
 459 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
 460 {
 461         int retval;
 462
 463         /*
 464          * bits 0-2: level
 465          * bit 7: light on/off
 466          * bit 8-10: environment (0: dark, 1: normal, 2: light)
 467          * bit 17: status unknown
 468          */
 469         retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
 470                                             0xFFFF);
 471
 472         /* Unknown status is considered as off */
 473         if (retval == 0x8000)
 474                 retval = 0;
 475
 476         if (retval >= 0) {
 477                 if (level)
 478                         *level = retval & 0x7F;
 479                 if (env)
 480                         *env = (retval >> 8) & 0x7F;
 481                 retval = 0;
 482         }
 483
 484         return retval;
 485 }
 486
 487 static void kbd_led_set(struct led_classdev *led_cdev,
 488                         enum led_brightness value)
 489 {
 490         struct asus_wmi *asus;
 491
 492         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 493
 494         if (value > asus->kbd_led.max_brightness)
 495                 value = asus->kbd_led.max_brightness;
 496         else if (value < 0)
 497                 value = 0;
 498
 499         asus->kbd_led_wk = value;
 500         queue_work(asus->led_workqueue, &asus->kbd_led_work);
 501 }
 502
 503 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 504 {
 505         struct asus_wmi *asus;
 506         int retval, value;
 507
 508         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
 509
 510         retval = kbd_led_read(asus, &value, NULL);
 511
 512         if (retval < 0)
 513                 return retval;
 514
 515         return value;
 516 }
 517
 518 static int wlan_led_unknown_state(struct asus_wmi *asus)
 519 {
 520         u32 result;
 521
 522         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 523
 524         return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
 525 }
 526
 527 static int wlan_led_presence(struct asus_wmi *asus)
 528 {
 529         u32 result;
 530
 531         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 532
 533         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
 534 }
 535
 536 static void wlan_led_update(struct work_struct *work)
 537 {
 538         int ctrl_param;
 539         struct asus_wmi *asus;
 540
 541         asus = container_of(work, struct asus_wmi, wlan_led_work);
 542
 543         ctrl_param = asus->wlan_led_wk;
 544         asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
 545 }
 546
 547 static void wlan_led_set(struct led_classdev *led_cdev,
 548                          enum led_brightness value)
 549 {
 550         struct asus_wmi *asus;
 551
 552         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 553
 554         asus->wlan_led_wk = !!value;
 555         queue_work(asus->led_workqueue, &asus->wlan_led_work);
 556 }
 557
 558 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
 559 {
 560         struct asus_wmi *asus;
 561         u32 result;
 562
 563         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
 564         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
 565
 566         return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
 567 }
 568
 569 static void asus_wmi_led_exit(struct asus_wmi *asus)
 570 {
 571         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
 572                 led_classdev_unregister(&asus->kbd_led);
 573         if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
 574                 led_classdev_unregister(&asus->tpd_led);
 575         if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
 576                 led_classdev_unregister(&asus->wlan_led);
 577         if (asus->led_workqueue)
 578                 destroy_workqueue(asus->led_workqueue);
 579 }
 580
 581 static int asus_wmi_led_init(struct asus_wmi *asus)
 582 {
 583         int rv = 0, led_val;
 584
 585         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 586         if (!asus->led_workqueue)
 587                 return -ENOMEM;
 588
 589         if (read_tpd_led_state(asus) >= 0) {
 590                 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
 591
 592                 asus->tpd_led.name = "asus::touchpad";
 593                 asus->tpd_led.brightness_set = tpd_led_set;
 594                 asus->tpd_led.brightness_get = tpd_led_get;
 595                 asus->tpd_led.max_brightness = 1;
 596
 597                 rv = led_classdev_register(&asus->platform_device->dev,
 598                                            &asus->tpd_led);
 599                 if (rv)
 600                         goto error;
 601         }
 602
 603         led_val = kbd_led_read(asus, NULL, NULL);
 604         if (led_val >= 0) {
 605                 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
 606
 607                 asus->kbd_led_wk = led_val;
 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 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1084 {
1085         struct pci_dev *xhci_pdev;
1086         u32 orig_ports_available;
1087         u32 ports_available = asus->driver->quirks->xusb2pr;
1088
1089         xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1090                         PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1091                         NULL);
1092
1093         if (!xhci_pdev)
1094                 return;
1095
1096         pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1097                                 &orig_ports_available);
1098
1099         pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1100                                 cpu_to_le32(ports_available));
1101
1102         pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1103                         orig_ports_available, ports_available);
1104 }
1105
1106 /*
1107  * Some devices dont support or have borcken get_als method
1108  * but still support set method.
1109  */
1110 static void asus_wmi_set_als(void)
1111 {
1112         asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1113 }
1114
1115 /*
1116  * Hwmon device
1117  */
1118 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1119                                           int *speed)
1120 {
1121         struct fan_args args = {
1122                 .agfn.len = sizeof(args),
1123                 .agfn.mfun = ASUS_FAN_MFUN,
1124                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1125                 .fan = fan,
1126                 .speed = 0,
1127         };
1128         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1129         int status;
1130
1131         if (fan != 1)
1132                 return -EINVAL;
1133
1134         status = asus_wmi_evaluate_method_agfn(input);
1135
1136         if (status || args.agfn.err)
1137                 return -ENXIO;
1138
1139         if (speed)
1140                 *speed = args.speed;
1141
1142         return 0;
1143 }
1144
1145 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1146                                      int *speed)
1147 {
1148         struct fan_args args = {
1149                 .agfn.len = sizeof(args),
1150                 .agfn.mfun = ASUS_FAN_MFUN,
1151                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1152                 .fan = fan,
1153                 .speed = speed ?  *speed : 0,
1154         };
1155         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1156         int status;
1157
1158         /* 1: for setting 1st fan's speed 0: setting auto mode */
1159         if (fan != 1 && fan != 0)
1160                 return -EINVAL;
1161
1162         status = asus_wmi_evaluate_method_agfn(input);
1163
1164         if (status || args.agfn.err)
1165                 return -ENXIO;
1166
1167         if (speed && fan == 1)
1168                 asus->asus_hwmon_pwm = *speed;
1169
1170         return 0;
1171 }
1172
1173 /*
1174  * Check if we can read the speed of one fan. If true we assume we can also
1175  * control it.
1176  */
1177 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1178 {
1179         int status;
1180         int speed = 0;
1181
1182         *num_fans = 0;
1183
1184         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1185         if (!status)
1186                 *num_fans = 1;
1187
1188         return 0;
1189 }
1190
1191 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1192 {
1193         int status;
1194
1195         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1196         if (status)
1197                 return -ENXIO;
1198
1199         asus->asus_hwmon_fan_manual_mode = false;
1200
1201         return 0;
1202 }
1203
1204 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1205 {
1206         struct asus_wmi *asus = dev_get_drvdata(dev);
1207         int value;
1208         int ret;
1209
1210         /* no speed readable on manual mode */
1211         if (asus->asus_hwmon_fan_manual_mode)
1212                 return -ENXIO;
1213
1214         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1215         if (ret) {
1216                 pr_warn("reading fan speed failed: %d\n", ret);
1217                 return -ENXIO;
1218         }
1219
1220         return value;
1221 }
1222
1223 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1224 {
1225         int err;
1226
1227         if (asus->asus_hwmon_pwm >= 0) {
1228                 *value = asus->asus_hwmon_pwm;
1229                 return;
1230         }
1231
1232         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1233         if (err < 0)
1234                 return;
1235
1236         *value &= 0xFF;
1237
1238         if (*value == 1) /* Low Speed */
1239                 *value = 85;
1240         else if (*value == 2)
1241                 *value = 170;
1242         else if (*value == 3)
1243                 *value = 255;
1244         else if (*value) {
1245                 pr_err("Unknown fan speed %#x\n", *value);
1246                 *value = -1;
1247         }
1248 }
1249
1250 static ssize_t pwm1_show(struct device *dev,
1251                                struct device_attribute *attr,
1252                                char *buf)
1253 {
1254         struct asus_wmi *asus = dev_get_drvdata(dev);
1255         int value;
1256
1257         asus_hwmon_pwm_show(asus, 0, &value);
1258
1259         return sprintf(buf, "%d\n", value);
1260 }
1261
1262 static ssize_t pwm1_store(struct device *dev,
1263                                      struct device_attribute *attr,
1264                                      const char *buf, size_t count) {
1265         struct asus_wmi *asus = dev_get_drvdata(dev);
1266         int value;
1267         int state;
1268         int ret;
1269
1270         ret = kstrtouint(buf, 10, &value);
1271
1272         if (ret)
1273                 return ret;
1274
1275         value = clamp(value, 0, 255);
1276
1277         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1278         if (state)
1279                 pr_warn("Setting fan speed failed: %d\n", state);
1280         else
1281                 asus->asus_hwmon_fan_manual_mode = true;
1282
1283         return count;
1284 }
1285
1286 static ssize_t fan1_input_show(struct device *dev,
1287                                         struct device_attribute *attr,
1288                                         char *buf)
1289 {
1290         int value = asus_hwmon_fan_rpm_show(dev, 0);
1291
1292         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1293
1294 }
1295
1296 static ssize_t pwm1_enable_show(struct device *dev,
1297                                                  struct device_attribute *attr,
1298                                                  char *buf)
1299 {
1300         struct asus_wmi *asus = dev_get_drvdata(dev);
1301
1302         if (asus->asus_hwmon_fan_manual_mode)
1303                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1304
1305         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1306 }
1307
1308 static ssize_t pwm1_enable_store(struct device *dev,
1309                                                   struct device_attribute *attr,
1310                                                   const char *buf, size_t count)
1311 {
1312         struct asus_wmi *asus = dev_get_drvdata(dev);
1313         int status = 0;
1314         int state;
1315         int ret;
1316
1317         ret = kstrtouint(buf, 10, &state);
1318
1319         if (ret)
1320                 return ret;
1321
1322         if (state == ASUS_FAN_CTRL_MANUAL)
1323                 asus->asus_hwmon_fan_manual_mode = true;
1324         else
1325                 status = asus_hwmon_fan_set_auto(asus);
1326
1327         if (status)
1328                 return status;
1329
1330         return count;
1331 }
1332
1333 static ssize_t fan1_label_show(struct device *dev,
1334                                           struct device_attribute *attr,
1335                                           char *buf)
1336 {
1337         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1338 }
1339
1340 static ssize_t asus_hwmon_temp1(struct device *dev,
1341                                 struct device_attribute *attr,
1342                                 char *buf)
1343 {
1344         struct asus_wmi *asus = dev_get_drvdata(dev);
1345         u32 value;
1346         int err;
1347
1348         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1349
1350         if (err < 0)
1351                 return err;
1352
1353         value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1354
1355         return sprintf(buf, "%d\n", value);
1356 }
1357
1358 /* Fan1 */
1359 static DEVICE_ATTR_RW(pwm1);
1360 static DEVICE_ATTR_RW(pwm1_enable);
1361 static DEVICE_ATTR_RO(fan1_input);
1362 static DEVICE_ATTR_RO(fan1_label);
1363
1364 /* Temperature */
1365 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1366
1367 static struct attribute *hwmon_attributes[] = {
1368         &dev_attr_pwm1.attr,
1369         &dev_attr_pwm1_enable.attr,
1370         &dev_attr_fan1_input.attr,
1371         &dev_attr_fan1_label.attr,
1372
1373         &dev_attr_temp1_input.attr,
1374         NULL
1375 };
1376
1377 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1378                                           struct attribute *attr, int idx)
1379 {
1380         struct device *dev = container_of(kobj, struct device, kobj);
1381         struct platform_device *pdev = to_platform_device(dev->parent);
1382         struct asus_wmi *asus = platform_get_drvdata(pdev);
1383         int dev_id = -1;
1384         int fan_attr = -1;
1385         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1386         bool ok = true;
1387
1388         if (attr == &dev_attr_pwm1.attr)
1389                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1390         else if (attr == &dev_attr_temp1_input.attr)
1391                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1392
1393
1394         if (attr == &dev_attr_fan1_input.attr
1395             || attr == &dev_attr_fan1_label.attr
1396             || attr == &dev_attr_pwm1.attr
1397             || attr == &dev_attr_pwm1_enable.attr) {
1398                 fan_attr = 1;
1399         }
1400
1401         if (dev_id != -1) {
1402                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1403
1404                 if (err < 0 && fan_attr == -1)
1405                         return 0; /* can't return negative here */
1406         }
1407
1408         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1409                 /*
1410                  * We need to find a better way, probably using sfun,
1411                  * bits or spec ...
1412                  * Currently we disable it if:
1413                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1414                  * - reverved bits are non-zero
1415                  * - sfun and presence bit are not set
1416                  */
1417                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1418                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1419                         ok = false;
1420                 else
1421                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1422         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1423                 /* If value is zero, something is clearly wrong */
1424                 if (!value)
1425                         ok = false;
1426         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1427                 ok = true;
1428         } else {
1429                 ok = false;
1430         }
1431
1432         return ok ? attr->mode : 0;
1433 }
1434
1435 static struct attribute_group hwmon_attribute_group = {
1436         .is_visible = asus_hwmon_sysfs_is_visible,
1437         .attrs = hwmon_attributes
1438 };
1439 __ATTRIBUTE_GROUPS(hwmon_attribute);
1440
1441 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1442 {
1443         struct device *hwmon;
1444
1445         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1446                                                   "asus", asus,
1447                                                   hwmon_attribute_groups);
1448         if (IS_ERR(hwmon)) {
1449                 pr_err("Could not register asus hwmon device\n");
1450                 return PTR_ERR(hwmon);
1451         }
1452         return 0;
1453 }
1454
1455 /*
1456  * Backlight
1457  */
1458 static int read_backlight_power(struct asus_wmi *asus)
1459 {
1460         int ret;
1461         if (asus->driver->quirks->store_backlight_power)
1462                 ret = !asus->driver->panel_power;
1463         else
1464                 ret = asus_wmi_get_devstate_simple(asus,
1465                                                    ASUS_WMI_DEVID_BACKLIGHT);
1466
1467         if (ret < 0)
1468                 return ret;
1469
1470         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1471 }
1472
1473 static int read_brightness_max(struct asus_wmi *asus)
1474 {
1475         u32 retval;
1476         int err;
1477
1478         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1479
1480         if (err < 0)
1481                 return err;
1482
1483         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1484         retval >>= 8;
1485
1486         if (!retval)
1487                 return -ENODEV;
1488
1489         return retval;
1490 }
1491
1492 static int read_brightness(struct backlight_device *bd)
1493 {
1494         struct asus_wmi *asus = bl_get_data(bd);
1495         u32 retval;
1496         int err;
1497
1498         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1499
1500         if (err < 0)
1501                 return err;
1502
1503         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1504 }
1505
1506 static u32 get_scalar_command(struct backlight_device *bd)
1507 {
1508         struct asus_wmi *asus = bl_get_data(bd);
1509         u32 ctrl_param = 0;
1510
1511         if ((asus->driver->brightness < bd->props.brightness) ||
1512             bd->props.brightness == bd->props.max_brightness)
1513                 ctrl_param = 0x00008001;
1514         else if ((asus->driver->brightness > bd->props.brightness) ||
1515                  bd->props.brightness == 0)
1516                 ctrl_param = 0x00008000;
1517
1518         asus->driver->brightness = bd->props.brightness;
1519
1520         return ctrl_param;
1521 }
1522
1523 static int update_bl_status(struct backlight_device *bd)
1524 {
1525         struct asus_wmi *asus = bl_get_data(bd);
1526         u32 ctrl_param;
1527         int power, err = 0;
1528
1529         power = read_backlight_power(asus);
1530         if (power != -ENODEV && bd->props.power != power) {
1531                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1532                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1533                                             ctrl_param, NULL);
1534                 if (asus->driver->quirks->store_backlight_power)
1535                         asus->driver->panel_power = bd->props.power;
1536
1537                 /* When using scalar brightness, updating the brightness
1538                  * will mess with the backlight power */
1539                 if (asus->driver->quirks->scalar_panel_brightness)
1540                         return err;
1541         }
1542
1543         if (asus->driver->quirks->scalar_panel_brightness)
1544                 ctrl_param = get_scalar_command(bd);
1545         else
1546                 ctrl_param = bd->props.brightness;
1547
1548         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1549                                     ctrl_param, NULL);
1550
1551         return err;
1552 }
1553
1554 static const struct backlight_ops asus_wmi_bl_ops = {
1555         .get_brightness = read_brightness,
1556         .update_status = update_bl_status,
1557 };
1558
1559 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1560 {
1561         struct backlight_device *bd = asus->backlight_device;
1562         int old = bd->props.brightness;
1563         int new = old;
1564
1565         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1566                 new = code - NOTIFY_BRNUP_MIN + 1;
1567         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1568                 new = code - NOTIFY_BRNDOWN_MIN;
1569
1570         bd->props.brightness = new;
1571         backlight_update_status(bd);
1572         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1573
1574         return old;
1575 }
1576
1577 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1578 {
1579         struct backlight_device *bd;
1580         struct backlight_properties props;
1581         int max;
1582         int power;
1583
1584         max = read_brightness_max(asus);
1585         if (max < 0)
1586                 return max;
1587
1588         power = read_backlight_power(asus);
1589
1590         if (power == -ENODEV)
1591                 power = FB_BLANK_UNBLANK;
1592         else if (power < 0)
1593                 return power;
1594
1595         memset(&props, 0, sizeof(struct backlight_properties));
1596         props.type = BACKLIGHT_PLATFORM;
1597         props.max_brightness = max;
1598         bd = backlight_device_register(asus->driver->name,
1599                                        &asus->platform_device->dev, asus,
1600                                        &asus_wmi_bl_ops, &props);
1601         if (IS_ERR(bd)) {
1602                 pr_err("Could not register backlight device\n");
1603                 return PTR_ERR(bd);
1604         }
1605
1606         asus->backlight_device = bd;
1607
1608         if (asus->driver->quirks->store_backlight_power)
1609                 asus->driver->panel_power = power;
1610
1611         bd->props.brightness = read_brightness(bd);
1612         bd->props.power = power;
1613         backlight_update_status(bd);
1614
1615         asus->driver->brightness = bd->props.brightness;
1616
1617         return 0;
1618 }
1619
1620 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1621 {
1622         backlight_device_unregister(asus->backlight_device);
1623
1624         asus->backlight_device = NULL;
1625 }
1626
1627 static int is_display_toggle(int code)
1628 {
1629         /* display toggle keys */
1630         if ((code >= 0x61 && code <= 0x67) ||
1631             (code >= 0x8c && code <= 0x93) ||
1632             (code >= 0xa0 && code <= 0xa7) ||
1633             (code >= 0xd0 && code <= 0xd5))
1634                 return 1;
1635
1636         return 0;
1637 }
1638
1639 static void asus_wmi_notify(u32 value, void *context)
1640 {
1641         struct asus_wmi *asus = context;
1642         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1643         union acpi_object *obj;
1644         acpi_status status;
1645         int code;
1646         int orig_code;
1647         unsigned int key_value = 1;
1648         bool autorelease = 1;
1649
1650         status = wmi_get_event_data(value, &response);
1651         if (status != AE_OK) {
1652                 pr_err("bad event status 0x%x\n", status);
1653                 return;
1654         }
1655
1656         obj = (union acpi_object *)response.pointer;
1657
1658         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1659                 goto exit;
1660
1661         code = obj->integer.value;
1662         orig_code = code;
1663
1664         if (asus->driver->key_filter) {
1665                 asus->driver->key_filter(asus->driver, &code, &key_value,
1666                                          &autorelease);
1667                 if (code == ASUS_WMI_KEY_IGNORE)
1668                         goto exit;
1669         }
1670
1671         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1672                 code = ASUS_WMI_BRN_UP;
1673         else if (code >= NOTIFY_BRNDOWN_MIN &&
1674                  code <= NOTIFY_BRNDOWN_MAX)
1675                 code = ASUS_WMI_BRN_DOWN;
1676
1677         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1678                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1679                         asus_wmi_backlight_notify(asus, orig_code);
1680                         goto exit;
1681                 }
1682         }
1683
1684         if (is_display_toggle(code) &&
1685             asus->driver->quirks->no_display_toggle)
1686                 goto exit;
1687
1688         if (!sparse_keymap_report_event(asus->inputdev, code,
1689                                         key_value, autorelease))
1690                 pr_info("Unknown key %x pressed\n", code);
1691
1692 exit:
1693         kfree(obj);
1694 }
1695
1696 /*
1697  * Sys helpers
1698  */
1699 static int parse_arg(const char *buf, unsigned long count, int *val)
1700 {
1701         if (!count)
1702                 return 0;
1703         if (sscanf(buf, "%i", val) != 1)
1704                 return -EINVAL;
1705         return count;
1706 }
1707
1708 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1709                              const char *buf, size_t count)
1710 {
1711         u32 retval;
1712         int rv, err, value;
1713
1714         value = asus_wmi_get_devstate_simple(asus, devid);
1715         if (value < 0)
1716                 return value;
1717
1718         rv = parse_arg(buf, count, &value);
1719         err = asus_wmi_set_devstate(devid, value, &retval);
1720
1721         if (err < 0)
1722                 return err;
1723
1724         return rv;
1725 }
1726
1727 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1728 {
1729         int value = asus_wmi_get_devstate_simple(asus, devid);
1730
1731         if (value < 0)
1732                 return value;
1733
1734         return sprintf(buf, "%d\n", value);
1735 }
1736
1737 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1738         static ssize_t show_##_name(struct device *dev,                 \
1739                                     struct device_attribute *attr,      \
1740                                     char *buf)                          \
1741         {                                                               \
1742                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1743                                                                         \
1744                 return show_sys_wmi(asus, _cm, buf);                    \
1745         }                                                               \
1746         static ssize_t store_##_name(struct device *dev,                \
1747                                      struct device_attribute *attr,     \
1748                                      const char *buf, size_t count)     \
1749         {                                                               \
1750                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1751                                                                         \
1752                 return store_sys_wmi(asus, _cm, buf, count);            \
1753         }                                                               \
1754         static struct device_attribute dev_attr_##_name = {             \
1755                 .attr = {                                               \
1756                         .name = __stringify(_name),                     \
1757                         .mode = _mode },                                \
1758                 .show   = show_##_name,                                 \
1759                 .store  = store_##_name,                                \
1760         }
1761
1762 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1763 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1764 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1765 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1766 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1767
1768 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1769                            const char *buf, size_t count)
1770 {
1771         int value, rv;
1772
1773         if (!count || sscanf(buf, "%i", &value) != 1)
1774                 return -EINVAL;
1775         if (value < 0 || value > 2)
1776                 return -EINVAL;
1777
1778         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1779         if (rv < 0)
1780                 return rv;
1781
1782         return count;
1783 }
1784
1785 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1786
1787 static struct attribute *platform_attributes[] = {
1788         &dev_attr_cpufv.attr,
1789         &dev_attr_camera.attr,
1790         &dev_attr_cardr.attr,
1791         &dev_attr_touchpad.attr,
1792         &dev_attr_lid_resume.attr,
1793         &dev_attr_als_enable.attr,
1794         NULL
1795 };
1796
1797 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1798                                     struct attribute *attr, int idx)
1799 {
1800         struct device *dev = container_of(kobj, struct device, kobj);
1801         struct platform_device *pdev = to_platform_device(dev);
1802         struct asus_wmi *asus = platform_get_drvdata(pdev);
1803         bool ok = true;
1804         int devid = -1;
1805
1806         if (attr == &dev_attr_camera.attr)
1807                 devid = ASUS_WMI_DEVID_CAMERA;
1808         else if (attr == &dev_attr_cardr.attr)
1809                 devid = ASUS_WMI_DEVID_CARDREADER;
1810         else if (attr == &dev_attr_touchpad.attr)
1811                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1812         else if (attr == &dev_attr_lid_resume.attr)
1813                 devid = ASUS_WMI_DEVID_LID_RESUME;
1814         else if (attr == &dev_attr_als_enable.attr)
1815                 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1816
1817         if (devid != -1)
1818                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1819
1820         return ok ? attr->mode : 0;
1821 }
1822
1823 static struct attribute_group platform_attribute_group = {
1824         .is_visible = asus_sysfs_is_visible,
1825         .attrs = platform_attributes
1826 };
1827
1828 static void asus_wmi_sysfs_exit(struct platform_device *device)
1829 {
1830         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1831 }
1832
1833 static int asus_wmi_sysfs_init(struct platform_device *device)
1834 {
1835         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1836 }
1837
1838 /*
1839  * Platform device
1840  */
1841 static int asus_wmi_platform_init(struct asus_wmi *asus)
1842 {
1843         int rv;
1844
1845         /* INIT enable hotkeys on some models */
1846         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1847                 pr_info("Initialization: %#x\n", rv);
1848
1849         /* We don't know yet what to do with this version... */
1850         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1851                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1852                 asus->spec = rv;
1853         }
1854
1855         /*
1856          * The SFUN method probably allows the original driver to get the list
1857          * of features supported by a given model. For now, 0x0100 or 0x0800
1858          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1859          * The significance of others is yet to be found.
1860          */
1861         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1862                 pr_info("SFUN value: %#x\n", rv);
1863                 asus->sfun = rv;
1864         }
1865
1866         /*
1867          * Eee PC and Notebooks seems to have different method_id for DSTS,
1868          * but it may also be related to the BIOS's SPEC.
1869          * Note, on most Eeepc, there is no way to check if a method exist
1870          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1871          * but once again, SPEC may probably be used for that kind of things.
1872          */
1873         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1874                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1875         else
1876                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1877
1878         /* CWAP allow to define the behavior of the Fn+F2 key,
1879          * this method doesn't seems to be present on Eee PCs */
1880         if (asus->driver->quirks->wapf >= 0)
1881                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1882                                       asus->driver->quirks->wapf, NULL);
1883
1884         return asus_wmi_sysfs_init(asus->platform_device);
1885 }
1886
1887 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1888 {
1889         asus_wmi_sysfs_exit(asus->platform_device);
1890 }
1891
1892 /*
1893  * debugfs
1894  */
1895 struct asus_wmi_debugfs_node {
1896         struct asus_wmi *asus;
1897         char *name;
1898         int (*show) (struct seq_file *m, void *data);
1899 };
1900
1901 static int show_dsts(struct seq_file *m, void *data)
1902 {
1903         struct asus_wmi *asus = m->private;
1904         int err;
1905         u32 retval = -1;
1906
1907         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1908
1909         if (err < 0)
1910                 return err;
1911
1912         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1913
1914         return 0;
1915 }
1916
1917 static int show_devs(struct seq_file *m, void *data)
1918 {
1919         struct asus_wmi *asus = m->private;
1920         int err;
1921         u32 retval = -1;
1922
1923         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1924                                     &retval);
1925
1926         if (err < 0)
1927                 return err;
1928
1929         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1930                    asus->debug.ctrl_param, retval);
1931
1932         return 0;
1933 }
1934
1935 static int show_call(struct seq_file *m, void *data)
1936 {
1937         struct asus_wmi *asus = m->private;
1938         struct bios_args args = {
1939                 .arg0 = asus->debug.dev_id,
1940                 .arg1 = asus->debug.ctrl_param,
1941         };
1942         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1943         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1944         union acpi_object *obj;
1945         acpi_status status;
1946
1947         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1948                                      1, asus->debug.method_id,
1949                                      &input, &output);
1950
1951         if (ACPI_FAILURE(status))
1952                 return -EIO;
1953
1954         obj = (union acpi_object *)output.pointer;
1955         if (obj && obj->type == ACPI_TYPE_INTEGER)
1956                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1957                            asus->debug.dev_id, asus->debug.ctrl_param,
1958                            (u32) obj->integer.value);
1959         else
1960                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1961                            asus->debug.dev_id, asus->debug.ctrl_param,
1962                            obj ? obj->type : -1);
1963
1964         kfree(obj);
1965
1966         return 0;
1967 }
1968
1969 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1970         {NULL, "devs", show_devs},
1971         {NULL, "dsts", show_dsts},
1972         {NULL, "call", show_call},
1973 };
1974
1975 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1976 {
1977         struct asus_wmi_debugfs_node *node = inode->i_private;
1978
1979         return single_open(file, node->show, node->asus);
1980 }
1981
1982 static const struct file_operations asus_wmi_debugfs_io_ops = {
1983         .owner = THIS_MODULE,
1984         .open = asus_wmi_debugfs_open,
1985         .read = seq_read,
1986         .llseek = seq_lseek,
1987         .release = single_release,
1988 };
1989
1990 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1991 {
1992         debugfs_remove_recursive(asus->debug.root);
1993 }
1994
1995 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1996 {
1997         struct dentry *dent;
1998         int i;
1999
2000         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2001         if (!asus->debug.root) {
2002                 pr_err("failed to create debugfs directory\n");
2003                 goto error_debugfs;
2004         }
2005
2006         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2007                                   asus->debug.root, &asus->debug.method_id);
2008         if (!dent)
2009                 goto error_debugfs;
2010
2011         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2012                                   asus->debug.root, &asus->debug.dev_id);
2013         if (!dent)
2014                 goto error_debugfs;
2015
2016         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2017                                   asus->debug.root, &asus->debug.ctrl_param);
2018         if (!dent)
2019                 goto error_debugfs;
2020
2021         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2022                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2023
2024                 node->asus = asus;
2025                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2026                                            asus->debug.root, node,
2027                                            &asus_wmi_debugfs_io_ops);
2028                 if (!dent) {
2029                         pr_err("failed to create debug file: %s\n", node->name);
2030                         goto error_debugfs;
2031                 }
2032         }
2033
2034         return 0;
2035
2036 error_debugfs:
2037         asus_wmi_debugfs_exit(asus);
2038         return -ENOMEM;
2039 }
2040
2041 static int asus_wmi_fan_init(struct asus_wmi *asus)
2042 {
2043         int status;
2044
2045         asus->asus_hwmon_pwm = -1;
2046         asus->asus_hwmon_num_fans = -1;
2047         asus->asus_hwmon_fan_manual_mode = false;
2048
2049         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2050         if (status) {
2051                 asus->asus_hwmon_num_fans = 0;
2052                 pr_warn("Could not determine number of fans: %d\n", status);
2053                 return -ENXIO;
2054         }
2055
2056         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2057         return 0;
2058 }
2059
2060 /*
2061  * WMI Driver
2062  */
2063 static int asus_wmi_add(struct platform_device *pdev)
2064 {
2065         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2066         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2067         struct asus_wmi *asus;
2068         const char *chassis_type;
2069         acpi_status status;
2070         int err;
2071         u32 result;
2072
2073         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2074         if (!asus)
2075                 return -ENOMEM;
2076
2077         asus->driver = wdrv;
2078         asus->platform_device = pdev;
2079         wdrv->platform_device = pdev;
2080         platform_set_drvdata(asus->platform_device, asus);
2081
2082         if (wdrv->detect_quirks)
2083                 wdrv->detect_quirks(asus->driver);
2084
2085         err = asus_wmi_platform_init(asus);
2086         if (err)
2087                 goto fail_platform;
2088
2089         err = asus_wmi_input_init(asus);
2090         if (err)
2091                 goto fail_input;
2092
2093         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2094         asus_hwmon_fan_set_auto(asus);
2095
2096         err = asus_wmi_hwmon_init(asus);
2097         if (err)
2098                 goto fail_hwmon;
2099
2100         err = asus_wmi_led_init(asus);
2101         if (err)
2102                 goto fail_leds;
2103
2104         if (!asus->driver->quirks->no_rfkill) {
2105                 err = asus_wmi_rfkill_init(asus);
2106                 if (err)
2107                         goto fail_rfkill;
2108         }
2109
2110         if (asus->driver->quirks->wmi_force_als_set)
2111                 asus_wmi_set_als();
2112
2113         /* Some Asus desktop boards export an acpi-video backlight interface,
2114            stop this from showing up */
2115         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2116         if (chassis_type && !strcmp(chassis_type, "3"))
2117                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2118
2119         if (asus->driver->quirks->wmi_backlight_power)
2120                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2121
2122         if (asus->driver->quirks->wmi_backlight_native)
2123                 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2124
2125         if (asus->driver->quirks->xusb2pr)
2126                 asus_wmi_set_xusb2pr(asus);
2127
2128         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2129                 err = asus_wmi_backlight_init(asus);
2130                 if (err && err != -ENODEV)
2131                         goto fail_backlight;
2132         } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2133                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2134
2135         status = wmi_install_notify_handler(asus->driver->event_guid,
2136                                             asus_wmi_notify, asus);
2137         if (ACPI_FAILURE(status)) {
2138                 pr_err("Unable to register notify handler - %d\n", status);
2139                 err = -ENODEV;
2140                 goto fail_wmi_handler;
2141         }
2142
2143         err = asus_wmi_debugfs_init(asus);
2144         if (err)
2145                 goto fail_debugfs;
2146
2147         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2148         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2149                 asus->driver->wlan_ctrl_by_user = 1;
2150
2151         return 0;
2152
2153 fail_debugfs:
2154         wmi_remove_notify_handler(asus->driver->event_guid);
2155 fail_wmi_handler:
2156         asus_wmi_backlight_exit(asus);
2157 fail_backlight:
2158         asus_wmi_rfkill_exit(asus);
2159 fail_rfkill:
2160         asus_wmi_led_exit(asus);
2161 fail_leds:
2162 fail_hwmon:
2163         asus_wmi_input_exit(asus);
2164 fail_input:
2165         asus_wmi_platform_exit(asus);
2166 fail_platform:
2167         kfree(asus);
2168         return err;
2169 }
2170
2171 static int asus_wmi_remove(struct platform_device *device)
2172 {
2173         struct asus_wmi *asus;
2174
2175         asus = platform_get_drvdata(device);
2176         wmi_remove_notify_handler(asus->driver->event_guid);
2177         asus_wmi_backlight_exit(asus);
2178         asus_wmi_input_exit(asus);
2179         asus_wmi_led_exit(asus);
2180         asus_wmi_rfkill_exit(asus);
2181         asus_wmi_debugfs_exit(asus);
2182         asus_wmi_platform_exit(asus);
2183         asus_hwmon_fan_set_auto(asus);
2184
2185         kfree(asus);
2186         return 0;
2187 }
2188
2189 /*
2190  * Platform driver - hibernate/resume callbacks
2191  */
2192 static int asus_hotk_thaw(struct device *device)
2193 {
2194         struct asus_wmi *asus = dev_get_drvdata(device);
2195
2196         if (asus->wlan.rfkill) {
2197                 bool wlan;
2198
2199                 /*
2200                  * Work around bios bug - acpi _PTS turns off the wireless led
2201                  * during suspend.  Normally it restores it on resume, but
2202                  * we should kick it ourselves in case hibernation is aborted.
2203                  */
2204                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2205                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2206         }
2207
2208         return 0;
2209 }
2210
2211 static int asus_hotk_resume(struct device *device)
2212 {
2213         struct asus_wmi *asus = dev_get_drvdata(device);
2214
2215         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2216                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2217
2218         return 0;
2219 }
2220
2221 static int asus_hotk_restore(struct device *device)
2222 {
2223         struct asus_wmi *asus = dev_get_drvdata(device);
2224         int bl;
2225
2226         /* Refresh both wlan rfkill state and pci hotplug */
2227         if (asus->wlan.rfkill)
2228                 asus_rfkill_hotplug(asus);
2229
2230         if (asus->bluetooth.rfkill) {
2231                 bl = !asus_wmi_get_devstate_simple(asus,
2232                                                    ASUS_WMI_DEVID_BLUETOOTH);
2233                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2234         }
2235         if (asus->wimax.rfkill) {
2236                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2237                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2238         }
2239         if (asus->wwan3g.rfkill) {
2240                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2241                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2242         }
2243         if (asus->gps.rfkill) {
2244                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2245                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2246         }
2247         if (asus->uwb.rfkill) {
2248                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2249                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2250         }
2251         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2252                 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2253
2254         return 0;
2255 }
2256
2257 static const struct dev_pm_ops asus_pm_ops = {
2258         .thaw = asus_hotk_thaw,
2259         .restore = asus_hotk_restore,
2260         .resume = asus_hotk_resume,
2261 };
2262
2263 static int asus_wmi_probe(struct platform_device *pdev)
2264 {
2265         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2266         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2267         int ret;
2268
2269         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2270                 pr_warn("Management GUID not found\n");
2271                 return -ENODEV;
2272         }
2273
2274         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2275                 pr_warn("Event GUID not found\n");
2276                 return -ENODEV;
2277         }
2278
2279         if (wdrv->probe) {
2280                 ret = wdrv->probe(pdev);
2281                 if (ret)
2282                         return ret;
2283         }
2284
2285         return asus_wmi_add(pdev);
2286 }
2287
2288 static bool used;
2289
2290 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2291 {
2292         struct platform_driver *platform_driver;
2293         struct platform_device *platform_device;
2294
2295         if (used)
2296                 return -EBUSY;
2297
2298         platform_driver = &driver->platform_driver;
2299         platform_driver->remove = asus_wmi_remove;
2300         platform_driver->driver.owner = driver->owner;
2301         platform_driver->driver.name = driver->name;
2302         platform_driver->driver.pm = &asus_pm_ops;
2303
2304         platform_device = platform_create_bundle(platform_driver,
2305                                                  asus_wmi_probe,
2306                                                  NULL, 0, NULL, 0);
2307         if (IS_ERR(platform_device))
2308                 return PTR_ERR(platform_device);
2309
2310         used = true;
2311         return 0;
2312 }
2313 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2314
2315 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2316 {
2317         platform_device_unregister(driver->platform_device);
2318         platform_driver_unregister(&driver->platform_driver);
2319         used = false;
2320 }
2321 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2322
2323 static int __init asus_wmi_init(void)
2324 {
2325         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2326                 pr_info("Asus Management GUID not found\n");
2327                 return -ENODEV;
2328         }
2329
2330         pr_info("ASUS WMI generic driver loaded\n");
2331         return 0;
2332 }
2333
2334 static void __exit asus_wmi_exit(void)
2335 {
2336         pr_info("ASUS WMI generic driver unloaded\n");
2337 }
2338
2339 module_init(asus_wmi_init);
2340 module_exit(asus_wmi_exit);