linux/drivers/platform/x86/asus-laptop.c
<<
>>
Prefs
   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  asus-laptop.c - Asus Laptop Support
   4 *
   5 *  Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
   6 *  Copyright (C) 2006-2007 Corentin Chary
   7 *  Copyright (C) 2011 Wind River Systems
   8 *
   9 *  The development page for this driver is located at
  10 *  http://sourceforge.net/projects/acpi4asus/
  11 *
  12 *  Credits:
  13 *  Pontus Fuchs   - Helper functions, cleanup
  14 *  Johann Wiesner - Small compile fixes
  15 *  John Belmonte  - ACPI code for Toshiba laptop was a good starting point.
  16 *  Eric Burghard  - LED display support for W1N
  17 *  Josh Green     - Light Sens support
  18 *  Thomas Tuttle  - His first patch for led support was very helpful
  19 *  Sam Lin        - GPS support
  20 */
  21
  22#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  23
  24#include <linux/kernel.h>
  25#include <linux/module.h>
  26#include <linux/init.h>
  27#include <linux/types.h>
  28#include <linux/err.h>
  29#include <linux/proc_fs.h>
  30#include <linux/backlight.h>
  31#include <linux/fb.h>
  32#include <linux/leds.h>
  33#include <linux/platform_device.h>
  34#include <linux/uaccess.h>
  35#include <linux/input.h>
  36#include <linux/input/sparse-keymap.h>
  37#include <linux/rfkill.h>
  38#include <linux/slab.h>
  39#include <linux/dmi.h>
  40#include <linux/acpi.h>
  41#include <acpi/video.h>
  42
  43#define ASUS_LAPTOP_VERSION     "0.42"
  44
  45#define ASUS_LAPTOP_NAME        "Asus Laptop Support"
  46#define ASUS_LAPTOP_CLASS       "hotkey"
  47#define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
  48#define ASUS_LAPTOP_FILE        KBUILD_MODNAME
  49#define ASUS_LAPTOP_PREFIX      "\\_SB.ATKD."
  50
  51MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
  52MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
  53MODULE_LICENSE("GPL");
  54
  55/*
  56 * WAPF defines the behavior of the Fn+Fx wlan key
  57 * The significance of values is yet to be found, but
  58 * most of the time:
  59 * Bit | Bluetooth | WLAN
  60 *  0  | Hardware  | Hardware
  61 *  1  | Hardware  | Software
  62 *  4  | Software  | Software
  63 */
  64static uint wapf = 1;
  65module_param(wapf, uint, 0444);
  66MODULE_PARM_DESC(wapf, "WAPF value");
  67
  68static char *wled_type = "unknown";
  69static char *bled_type = "unknown";
  70
  71module_param(wled_type, charp, 0444);
  72MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
  73                 "(unknown, led or rfkill). "
  74                 "default is unknown");
  75
  76module_param(bled_type, charp, 0444);
  77MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
  78                 "(unknown, led or rfkill). "
  79                 "default is unknown");
  80
  81static int wlan_status = 1;
  82static int bluetooth_status = 1;
  83static int wimax_status = -1;
  84static int wwan_status = -1;
  85static int als_status;
  86
  87module_param(wlan_status, int, 0444);
  88MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
  89                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
  90                 "default is -1");
  91
  92module_param(bluetooth_status, int, 0444);
  93MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
  94                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
  95                 "default is -1");
  96
  97module_param(wimax_status, int, 0444);
  98MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
  99                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 100                 "default is -1");
 101
 102module_param(wwan_status, int, 0444);
 103MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
 104                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 105                 "default is -1");
 106
 107module_param(als_status, int, 0444);
 108MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
 109                 "(0 = disabled, 1 = enabled). "
 110                 "default is 0");
 111
 112/*
 113 * Some events we use, same for all Asus
 114 */
 115#define ATKD_BRNUP_MIN          0x10
 116#define ATKD_BRNUP_MAX          0x1f
 117#define ATKD_BRNDOWN_MIN        0x20
 118#define ATKD_BRNDOWN_MAX        0x2f
 119#define ATKD_BRNDOWN            0x20
 120#define ATKD_BRNUP              0x2f
 121#define ATKD_LCD_ON     0x33
 122#define ATKD_LCD_OFF    0x34
 123
 124/*
 125 * Known bits returned by \_SB.ATKD.HWRS
 126 */
 127#define WL_HWRS         0x80
 128#define BT_HWRS         0x100
 129
 130/*
 131 * Flags for hotk status
 132 * WL_ON and BT_ON are also used for wireless_status()
 133 */
 134#define WL_RSTS         0x01    /* internal Wifi */
 135#define BT_RSTS         0x02    /* internal Bluetooth */
 136#define WM_RSTS         0x08    /* internal wimax */
 137#define WW_RSTS         0x20    /* internal wwan */
 138
 139/* WLED and BLED type */
 140#define TYPE_UNKNOWN    0
 141#define TYPE_LED        1
 142#define TYPE_RFKILL     2
 143
 144/* LED */
 145#define METHOD_MLED             "MLED"
 146#define METHOD_TLED             "TLED"
 147#define METHOD_RLED             "RLED"  /* W1JC */
 148#define METHOD_PLED             "PLED"  /* A7J */
 149#define METHOD_GLED             "GLED"  /* G1, G2 (probably) */
 150
 151/* LEDD */
 152#define METHOD_LEDD             "SLCM"
 153
 154/*
 155 * Bluetooth and WLAN
 156 * WLED and BLED are not handled like other XLED, because in some dsdt
 157 * they also control the WLAN/Bluetooth device.
 158 */
 159#define METHOD_WLAN             "WLED"
 160#define METHOD_BLUETOOTH        "BLED"
 161
 162/* WWAN and WIMAX */
 163#define METHOD_WWAN             "GSMC"
 164#define METHOD_WIMAX            "WMXC"
 165
 166#define METHOD_WL_STATUS        "RSTS"
 167
 168/* Brightness */
 169#define METHOD_BRIGHTNESS_SET   "SPLV"
 170#define METHOD_BRIGHTNESS_GET   "GPLV"
 171
 172/* Display */
 173#define METHOD_SWITCH_DISPLAY   "SDSP"
 174
 175#define METHOD_ALS_CONTROL      "ALSC" /* Z71A Z71V */
 176#define METHOD_ALS_LEVEL        "ALSL" /* Z71A Z71V */
 177
 178/* GPS */
 179/* R2H use different handle for GPS on/off */
 180#define METHOD_GPS_ON           "SDON"
 181#define METHOD_GPS_OFF          "SDOF"
 182#define METHOD_GPS_STATUS       "GPST"
 183
 184/* Keyboard light */
 185#define METHOD_KBD_LIGHT_SET    "SLKB"
 186#define METHOD_KBD_LIGHT_GET    "GLKB"
 187
 188/* For Pegatron Lucid tablet */
 189#define DEVICE_NAME_PEGA        "Lucid"
 190
 191#define METHOD_PEGA_ENABLE      "ENPR"
 192#define METHOD_PEGA_DISABLE     "DAPR"
 193#define PEGA_WLAN       0x00
 194#define PEGA_BLUETOOTH  0x01
 195#define PEGA_WWAN       0x02
 196#define PEGA_ALS        0x04
 197#define PEGA_ALS_POWER  0x05
 198
 199#define METHOD_PEGA_READ        "RDLN"
 200#define PEGA_READ_ALS_H 0x02
 201#define PEGA_READ_ALS_L 0x03
 202
 203#define PEGA_ACCEL_NAME "pega_accel"
 204#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
 205#define METHOD_XLRX "XLRX"
 206#define METHOD_XLRY "XLRY"
 207#define METHOD_XLRZ "XLRZ"
 208#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
 209#define PEGA_ACC_RETRIES 3
 210
 211/*
 212 * Define a specific led structure to keep the main structure clean
 213 */
 214struct asus_led {
 215        int wk;
 216        struct work_struct work;
 217        struct led_classdev led;
 218        struct asus_laptop *asus;
 219        const char *method;
 220};
 221
 222/*
 223 * Same thing for rfkill
 224 */
 225struct asus_rfkill {
 226        /* type of control. Maps to PEGA_* values or *_RSTS  */
 227        int control_id;
 228        struct rfkill *rfkill;
 229        struct asus_laptop *asus;
 230};
 231
 232/*
 233 * This is the main structure, we can use it to store anything interesting
 234 * about the hotk device
 235 */
 236struct asus_laptop {
 237        char *name;             /* laptop name */
 238
 239        struct acpi_table_header *dsdt_info;
 240        struct platform_device *platform_device;
 241        struct acpi_device *device;             /* the device we are in */
 242        struct backlight_device *backlight_device;
 243
 244        struct input_dev *inputdev;
 245        struct key_entry *keymap;
 246        struct input_dev *pega_accel_poll;
 247
 248        struct asus_led wled;
 249        struct asus_led bled;
 250        struct asus_led mled;
 251        struct asus_led tled;
 252        struct asus_led rled;
 253        struct asus_led pled;
 254        struct asus_led gled;
 255        struct asus_led kled;
 256        struct workqueue_struct *led_workqueue;
 257
 258        int wled_type;
 259        int bled_type;
 260        int wireless_status;
 261        bool have_rsts;
 262        bool is_pega_lucid;
 263        bool pega_acc_live;
 264        int pega_acc_x;
 265        int pega_acc_y;
 266        int pega_acc_z;
 267
 268        struct asus_rfkill wlan;
 269        struct asus_rfkill bluetooth;
 270        struct asus_rfkill wwan;
 271        struct asus_rfkill wimax;
 272        struct asus_rfkill gps;
 273
 274        acpi_handle handle;     /* the handle of the hotk device */
 275        u32 ledd_status;        /* status of the LED display */
 276        u8 light_level;         /* light sensor level */
 277        u8 light_switch;        /* light sensor switch value */
 278        u16 event_count[128];   /* count for each event TODO make this better */
 279};
 280
 281static const struct key_entry asus_keymap[] = {
 282        /* Lenovo SL Specific keycodes */
 283        {KE_KEY, 0x02, { KEY_SCREENLOCK } },
 284        {KE_KEY, 0x05, { KEY_WLAN } },
 285        {KE_KEY, 0x08, { KEY_F13 } },
 286        {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
 287        {KE_KEY, 0x17, { KEY_ZOOM } },
 288        {KE_KEY, 0x1f, { KEY_BATTERY } },
 289        /* End of Lenovo SL Specific keycodes */
 290        {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } },
 291        {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } },
 292        {KE_KEY, 0x30, { KEY_VOLUMEUP } },
 293        {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 294        {KE_KEY, 0x32, { KEY_MUTE } },
 295        {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
 296        {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
 297        {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
 298        {KE_KEY, 0x41, { KEY_NEXTSONG } },
 299        {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
 300        {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
 301        {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
 302        {KE_KEY, 0x50, { KEY_EMAIL } },
 303        {KE_KEY, 0x51, { KEY_WWW } },
 304        {KE_KEY, 0x55, { KEY_CALC } },
 305        {KE_IGNORE, 0x57, },  /* Battery mode */
 306        {KE_IGNORE, 0x58, },  /* AC mode */
 307        {KE_KEY, 0x5C, { KEY_SCREENLOCK } },  /* Screenlock */
 308        {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */
 309        {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */
 310        {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */
 311        {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
 312        {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
 313        {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
 314        {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
 315        {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
 316        {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
 317        {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
 318        {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
 319        {KE_KEY, 0x6A, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad Fn + F9 */
 320        {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
 321        {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
 322        {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
 323        {KE_IGNORE, 0x6E, },  /* Low Battery notification */
 324        {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
 325        {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
 326        {KE_KEY, 0x82, { KEY_CAMERA } },
 327        {KE_KEY, 0x88, { KEY_RFKILL  } }, /* Radio Toggle Key */
 328        {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
 329        {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
 330        {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
 331        {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
 332        {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
 333        {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
 334        {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
 335        {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
 336        {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
 337        {KE_KEY, 0x95, { KEY_MEDIA } },
 338        {KE_KEY, 0x99, { KEY_PHONE } },
 339        {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
 340        {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
 341        {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
 342        {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
 343        {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
 344        {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
 345        {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
 346        {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
 347        {KE_KEY, 0xB5, { KEY_CALC } },
 348        {KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
 349        {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
 350        {KE_END, 0},
 351};
 352
 353
 354/*
 355 * This function evaluates an ACPI method, given an int as parameter, the
 356 * method is searched within the scope of the handle, can be NULL. The output
 357 * of the method is written is output, which can also be NULL
 358 *
 359 * returns 0 if write is successful, -1 else.
 360 */
 361static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
 362                              struct acpi_buffer *output)
 363{
 364        struct acpi_object_list params; /* list of input parameters (an int) */
 365        union acpi_object in_obj;       /* the only param we use */
 366        acpi_status status;
 367
 368        if (!handle)
 369                return -1;
 370
 371        params.count = 1;
 372        params.pointer = &in_obj;
 373        in_obj.type = ACPI_TYPE_INTEGER;
 374        in_obj.integer.value = val;
 375
 376        status = acpi_evaluate_object(handle, (char *)method, &params, output);
 377        if (status == AE_OK)
 378                return 0;
 379        else
 380                return -1;
 381}
 382
 383static int write_acpi_int(acpi_handle handle, const char *method, int val)
 384{
 385        return write_acpi_int_ret(handle, method, val, NULL);
 386}
 387
 388static int acpi_check_handle(acpi_handle handle, const char *method,
 389                             acpi_handle *ret)
 390{
 391        acpi_status status;
 392
 393        if (method == NULL)
 394                return -ENODEV;
 395
 396        if (ret)
 397                status = acpi_get_handle(handle, (char *)method,
 398                                         ret);
 399        else {
 400                acpi_handle dummy;
 401
 402                status = acpi_get_handle(handle, (char *)method,
 403                                         &dummy);
 404        }
 405
 406        if (status != AE_OK) {
 407                if (ret)
 408                        pr_warn("Error finding %s\n", method);
 409                return -ENODEV;
 410        }
 411        return 0;
 412}
 413
 414static bool asus_check_pega_lucid(struct asus_laptop *asus)
 415{
 416        return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
 417           !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
 418           !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
 419           !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
 420}
 421
 422static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
 423{
 424        char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
 425        return write_acpi_int(asus->handle, method, unit);
 426}
 427
 428static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
 429{
 430        int i, delta;
 431        unsigned long long val;
 432        for (i = 0; i < PEGA_ACC_RETRIES; i++) {
 433                acpi_evaluate_integer(asus->handle, method, NULL, &val);
 434
 435                /* The output is noisy.  From reading the ASL
 436                 * dissassembly, timeout errors are returned with 1's
 437                 * in the high word, and the lack of locking around
 438                 * thei hi/lo byte reads means that a transition
 439                 * between (for example) -1 and 0 could be read as
 440                 * 0xff00 or 0x00ff. */
 441                delta = abs(curr - (short)val);
 442                if (delta < 128 && !(val & ~0xffff))
 443                        break;
 444        }
 445        return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
 446}
 447
 448static void pega_accel_poll(struct input_dev *input)
 449{
 450        struct device *parent = input->dev.parent;
 451        struct asus_laptop *asus = dev_get_drvdata(parent);
 452
 453        /* In some cases, the very first call to poll causes a
 454         * recursive fault under the polldev worker.  This is
 455         * apparently related to very early userspace access to the
 456         * device, and perhaps a firmware bug. Fake the first report. */
 457        if (!asus->pega_acc_live) {
 458                asus->pega_acc_live = true;
 459                input_report_abs(input, ABS_X, 0);
 460                input_report_abs(input, ABS_Y, 0);
 461                input_report_abs(input, ABS_Z, 0);
 462                input_sync(input);
 463                return;
 464        }
 465
 466        asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
 467        asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
 468        asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
 469
 470        /* Note transform, convert to "right/up/out" in the native
 471         * landscape orientation (i.e. the vector is the direction of
 472         * "real up" in the device's cartiesian coordinates). */
 473        input_report_abs(input, ABS_X, -asus->pega_acc_x);
 474        input_report_abs(input, ABS_Y, -asus->pega_acc_y);
 475        input_report_abs(input, ABS_Z,  asus->pega_acc_z);
 476        input_sync(input);
 477}
 478
 479static void pega_accel_exit(struct asus_laptop *asus)
 480{
 481        if (asus->pega_accel_poll) {
 482                input_unregister_device(asus->pega_accel_poll);
 483                asus->pega_accel_poll = NULL;
 484        }
 485}
 486
 487static int pega_accel_init(struct asus_laptop *asus)
 488{
 489        int err;
 490        struct input_dev *input;
 491
 492        if (!asus->is_pega_lucid)
 493                return -ENODEV;
 494
 495        if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
 496            acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
 497            acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
 498                return -ENODEV;
 499
 500        input = input_allocate_device();
 501        if (!input)
 502                return -ENOMEM;
 503
 504        input->name = PEGA_ACCEL_DESC;
 505        input->phys = PEGA_ACCEL_NAME "/input0";
 506        input->dev.parent = &asus->platform_device->dev;
 507        input->id.bustype = BUS_HOST;
 508
 509        input_set_abs_params(input, ABS_X,
 510                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 511        input_set_abs_params(input, ABS_Y,
 512                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 513        input_set_abs_params(input, ABS_Z,
 514                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 515
 516        err = input_setup_polling(input, pega_accel_poll);
 517        if (err)
 518                goto exit;
 519
 520        input_set_poll_interval(input, 125);
 521        input_set_min_poll_interval(input, 50);
 522        input_set_max_poll_interval(input, 2000);
 523
 524        err = input_register_device(input);
 525        if (err)
 526                goto exit;
 527
 528        asus->pega_accel_poll = input;
 529        return 0;
 530
 531exit:
 532        input_free_device(input);
 533        return err;
 534}
 535
 536/* Generic LED function */
 537static int asus_led_set(struct asus_laptop *asus, const char *method,
 538                         int value)
 539{
 540        if (!strcmp(method, METHOD_MLED))
 541                value = !value;
 542        else if (!strcmp(method, METHOD_GLED))
 543                value = !value + 1;
 544        else
 545                value = !!value;
 546
 547        return write_acpi_int(asus->handle, method, value);
 548}
 549
 550/*
 551 * LEDs
 552 */
 553/* /sys/class/led handlers */
 554static void asus_led_cdev_set(struct led_classdev *led_cdev,
 555                         enum led_brightness value)
 556{
 557        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 558        struct asus_laptop *asus = led->asus;
 559
 560        led->wk = !!value;
 561        queue_work(asus->led_workqueue, &led->work);
 562}
 563
 564static void asus_led_cdev_update(struct work_struct *work)
 565{
 566        struct asus_led *led = container_of(work, struct asus_led, work);
 567        struct asus_laptop *asus = led->asus;
 568
 569        asus_led_set(asus, led->method, led->wk);
 570}
 571
 572static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
 573{
 574        return led_cdev->brightness;
 575}
 576
 577/*
 578 * Keyboard backlight (also a LED)
 579 */
 580static int asus_kled_lvl(struct asus_laptop *asus)
 581{
 582        unsigned long long kblv;
 583        struct acpi_object_list params;
 584        union acpi_object in_obj;
 585        acpi_status rv;
 586
 587        params.count = 1;
 588        params.pointer = &in_obj;
 589        in_obj.type = ACPI_TYPE_INTEGER;
 590        in_obj.integer.value = 2;
 591
 592        rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
 593                                   &params, &kblv);
 594        if (ACPI_FAILURE(rv)) {
 595                pr_warn("Error reading kled level\n");
 596                return -ENODEV;
 597        }
 598        return kblv;
 599}
 600
 601static int asus_kled_set(struct asus_laptop *asus, int kblv)
 602{
 603        if (kblv > 0)
 604                kblv = (1 << 7) | (kblv & 0x7F);
 605        else
 606                kblv = 0;
 607
 608        if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
 609                pr_warn("Keyboard LED display write failed\n");
 610                return -EINVAL;
 611        }
 612        return 0;
 613}
 614
 615static void asus_kled_cdev_set(struct led_classdev *led_cdev,
 616                              enum led_brightness value)
 617{
 618        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 619        struct asus_laptop *asus = led->asus;
 620
 621        led->wk = value;
 622        queue_work(asus->led_workqueue, &led->work);
 623}
 624
 625static void asus_kled_cdev_update(struct work_struct *work)
 626{
 627        struct asus_led *led = container_of(work, struct asus_led, work);
 628        struct asus_laptop *asus = led->asus;
 629
 630        asus_kled_set(asus, led->wk);
 631}
 632
 633static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
 634{
 635        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 636        struct asus_laptop *asus = led->asus;
 637
 638        return asus_kled_lvl(asus);
 639}
 640
 641static void asus_led_exit(struct asus_laptop *asus)
 642{
 643        led_classdev_unregister(&asus->wled.led);
 644        led_classdev_unregister(&asus->bled.led);
 645        led_classdev_unregister(&asus->mled.led);
 646        led_classdev_unregister(&asus->tled.led);
 647        led_classdev_unregister(&asus->pled.led);
 648        led_classdev_unregister(&asus->rled.led);
 649        led_classdev_unregister(&asus->gled.led);
 650        led_classdev_unregister(&asus->kled.led);
 651
 652        if (asus->led_workqueue) {
 653                destroy_workqueue(asus->led_workqueue);
 654                asus->led_workqueue = NULL;
 655        }
 656}
 657
 658/*  Ugly macro, need to fix that later */
 659static int asus_led_register(struct asus_laptop *asus,
 660                             struct asus_led *led,
 661                             const char *name, const char *method)
 662{
 663        struct led_classdev *led_cdev = &led->led;
 664
 665        if (!method || acpi_check_handle(asus->handle, method, NULL))
 666                return 0; /* Led not present */
 667
 668        led->asus = asus;
 669        led->method = method;
 670
 671        INIT_WORK(&led->work, asus_led_cdev_update);
 672        led_cdev->name = name;
 673        led_cdev->brightness_set = asus_led_cdev_set;
 674        led_cdev->brightness_get = asus_led_cdev_get;
 675        led_cdev->max_brightness = 1;
 676        return led_classdev_register(&asus->platform_device->dev, led_cdev);
 677}
 678
 679static int asus_led_init(struct asus_laptop *asus)
 680{
 681        int r = 0;
 682
 683        /*
 684         * The Pegatron Lucid has no physical leds, but all methods are
 685         * available in the DSDT...
 686         */
 687        if (asus->is_pega_lucid)
 688                return 0;
 689
 690        /*
 691         * Functions that actually update the LED's are called from a
 692         * workqueue. By doing this as separate work rather than when the LED
 693         * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 694         * potentially bad time, such as a timer interrupt.
 695         */
 696        asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 697        if (!asus->led_workqueue)
 698                return -ENOMEM;
 699
 700        if (asus->wled_type == TYPE_LED)
 701                r = asus_led_register(asus, &asus->wled, "asus::wlan",
 702                                      METHOD_WLAN);
 703        if (r)
 704                goto error;
 705        if (asus->bled_type == TYPE_LED)
 706                r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
 707                                      METHOD_BLUETOOTH);
 708        if (r)
 709                goto error;
 710        r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
 711        if (r)
 712                goto error;
 713        r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
 714        if (r)
 715                goto error;
 716        r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
 717        if (r)
 718                goto error;
 719        r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
 720        if (r)
 721                goto error;
 722        r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
 723        if (r)
 724                goto error;
 725        if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
 726            !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
 727                struct asus_led *led = &asus->kled;
 728                struct led_classdev *cdev = &led->led;
 729
 730                led->asus = asus;
 731
 732                INIT_WORK(&led->work, asus_kled_cdev_update);
 733                cdev->name = "asus::kbd_backlight";
 734                cdev->brightness_set = asus_kled_cdev_set;
 735                cdev->brightness_get = asus_kled_cdev_get;
 736                cdev->max_brightness = 3;
 737                r = led_classdev_register(&asus->platform_device->dev, cdev);
 738        }
 739error:
 740        if (r)
 741                asus_led_exit(asus);
 742        return r;
 743}
 744
 745/*
 746 * Backlight device
 747 */
 748static int asus_read_brightness(struct backlight_device *bd)
 749{
 750        struct asus_laptop *asus = bl_get_data(bd);
 751        unsigned long long value;
 752        acpi_status rv;
 753
 754        rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
 755                                   NULL, &value);
 756        if (ACPI_FAILURE(rv)) {
 757                pr_warn("Error reading brightness\n");
 758                return 0;
 759        }
 760
 761        return value;
 762}
 763
 764static int asus_set_brightness(struct backlight_device *bd, int value)
 765{
 766        struct asus_laptop *asus = bl_get_data(bd);
 767
 768        if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
 769                pr_warn("Error changing brightness\n");
 770                return -EIO;
 771        }
 772        return 0;
 773}
 774
 775static int update_bl_status(struct backlight_device *bd)
 776{
 777        int value = bd->props.brightness;
 778
 779        return asus_set_brightness(bd, value);
 780}
 781
 782static const struct backlight_ops asusbl_ops = {
 783        .get_brightness = asus_read_brightness,
 784        .update_status = update_bl_status,
 785};
 786
 787static int asus_backlight_notify(struct asus_laptop *asus)
 788{
 789        struct backlight_device *bd = asus->backlight_device;
 790        int old = bd->props.brightness;
 791
 792        backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
 793
 794        return old;
 795}
 796
 797static int asus_backlight_init(struct asus_laptop *asus)
 798{
 799        struct backlight_device *bd;
 800        struct backlight_properties props;
 801
 802        if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
 803            acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
 804                return 0;
 805
 806        memset(&props, 0, sizeof(struct backlight_properties));
 807        props.max_brightness = 15;
 808        props.type = BACKLIGHT_PLATFORM;
 809
 810        bd = backlight_device_register(ASUS_LAPTOP_FILE,
 811                                       &asus->platform_device->dev, asus,
 812                                       &asusbl_ops, &props);
 813        if (IS_ERR(bd)) {
 814                pr_err("Could not register asus backlight device\n");
 815                asus->backlight_device = NULL;
 816                return PTR_ERR(bd);
 817        }
 818
 819        asus->backlight_device = bd;
 820        bd->props.brightness = asus_read_brightness(bd);
 821        bd->props.power = FB_BLANK_UNBLANK;
 822        backlight_update_status(bd);
 823        return 0;
 824}
 825
 826static void asus_backlight_exit(struct asus_laptop *asus)
 827{
 828        backlight_device_unregister(asus->backlight_device);
 829        asus->backlight_device = NULL;
 830}
 831
 832/*
 833 * Platform device handlers
 834 */
 835
 836/*
 837 * We write our info in page, we begin at offset off and cannot write more
 838 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
 839 * number of bytes written in page
 840 */
 841static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
 842                          char *page)
 843{
 844        struct asus_laptop *asus = dev_get_drvdata(dev);
 845        int len = 0;
 846        unsigned long long temp;
 847        char buf[16];           /* enough for all info */
 848        acpi_status rv;
 849
 850        /*
 851         * We use the easy way, we don't care of off and count,
 852         * so we don't set eof to 1
 853         */
 854
 855        len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
 856        len += sprintf(page + len, "Model reference    : %s\n", asus->name);
 857        /*
 858         * The SFUN method probably allows the original driver to get the list
 859         * of features supported by a given model. For now, 0x0100 or 0x0800
 860         * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
 861         * The significance of others is yet to be found.
 862         */
 863        rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
 864        if (ACPI_SUCCESS(rv))
 865                len += sprintf(page + len, "SFUN value         : %#x\n",
 866                               (uint) temp);
 867        /*
 868         * The HWRS method return informations about the hardware.
 869         * 0x80 bit is for WLAN, 0x100 for Bluetooth.
 870         * 0x40 for WWAN, 0x10 for WIMAX.
 871         * The significance of others is yet to be found.
 872         * We don't currently use this for device detection, and it
 873         * takes several seconds to run on some systems.
 874         */
 875        rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
 876        if (ACPI_SUCCESS(rv))
 877                len += sprintf(page + len, "HWRS value         : %#x\n",
 878                               (uint) temp);
 879        /*
 880         * Another value for userspace: the ASYM method returns 0x02 for
 881         * battery low and 0x04 for battery critical, its readings tend to be
 882         * more accurate than those provided by _BST.
 883         * Note: since not all the laptops provide this method, errors are
 884         * silently ignored.
 885         */
 886        rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
 887        if (ACPI_SUCCESS(rv))
 888                len += sprintf(page + len, "ASYM value         : %#x\n",
 889                               (uint) temp);
 890        if (asus->dsdt_info) {
 891                snprintf(buf, 16, "%d", asus->dsdt_info->length);
 892                len += sprintf(page + len, "DSDT length        : %s\n", buf);
 893                snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
 894                len += sprintf(page + len, "DSDT checksum      : %s\n", buf);
 895                snprintf(buf, 16, "%d", asus->dsdt_info->revision);
 896                len += sprintf(page + len, "DSDT revision      : %s\n", buf);
 897                snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
 898                len += sprintf(page + len, "OEM id             : %s\n", buf);
 899                snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
 900                len += sprintf(page + len, "OEM table id       : %s\n", buf);
 901                snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
 902                len += sprintf(page + len, "OEM revision       : 0x%s\n", buf);
 903                snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
 904                len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
 905                snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
 906                len += sprintf(page + len, "ASL comp revision  : 0x%s\n", buf);
 907        }
 908
 909        return len;
 910}
 911static DEVICE_ATTR_RO(infos);
 912
 913static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
 914                              const char *buf, size_t count,
 915                              const char *method)
 916{
 917        int rv, value;
 918
 919        rv = kstrtoint(buf, 0, &value);
 920        if (rv < 0)
 921                return rv;
 922
 923        if (write_acpi_int(asus->handle, method, value))
 924                return -ENODEV;
 925        return count;
 926}
 927
 928/*
 929 * LEDD display
 930 */
 931static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
 932                         char *buf)
 933{
 934        struct asus_laptop *asus = dev_get_drvdata(dev);
 935
 936        return sprintf(buf, "0x%08x\n", asus->ledd_status);
 937}
 938
 939static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
 940                          const char *buf, size_t count)
 941{
 942        struct asus_laptop *asus = dev_get_drvdata(dev);
 943        int rv, value;
 944
 945        rv = kstrtoint(buf, 0, &value);
 946        if (rv < 0)
 947                return rv;
 948
 949        if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
 950                pr_warn("LED display write failed\n");
 951                return -ENODEV;
 952        }
 953
 954        asus->ledd_status = (u32) value;
 955        return count;
 956}
 957static DEVICE_ATTR_RW(ledd);
 958
 959/*
 960 * Wireless
 961 */
 962static int asus_wireless_status(struct asus_laptop *asus, int mask)
 963{
 964        unsigned long long status;
 965        acpi_status rv = AE_OK;
 966
 967        if (!asus->have_rsts)
 968                return (asus->wireless_status & mask) ? 1 : 0;
 969
 970        rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
 971                                   NULL, &status);
 972        if (ACPI_FAILURE(rv)) {
 973                pr_warn("Error reading Wireless status\n");
 974                return -EINVAL;
 975        }
 976        return !!(status & mask);
 977}
 978
 979/*
 980 * WLAN
 981 */
 982static int asus_wlan_set(struct asus_laptop *asus, int status)
 983{
 984        if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
 985                pr_warn("Error setting wlan status to %d\n", status);
 986                return -EIO;
 987        }
 988        return 0;
 989}
 990
 991static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
 992                         char *buf)
 993{
 994        struct asus_laptop *asus = dev_get_drvdata(dev);
 995
 996        return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
 997}
 998
 999static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
1000                          const char *buf, size_t count)
1001{
1002        struct asus_laptop *asus = dev_get_drvdata(dev);
1003
1004        return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1005}
1006static DEVICE_ATTR_RW(wlan);
1007
1008/*e
1009 * Bluetooth
1010 */
1011static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1012{
1013        if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1014                pr_warn("Error setting bluetooth status to %d\n", status);
1015                return -EIO;
1016        }
1017        return 0;
1018}
1019
1020static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
1021                              char *buf)
1022{
1023        struct asus_laptop *asus = dev_get_drvdata(dev);
1024
1025        return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1026}
1027
1028static ssize_t bluetooth_store(struct device *dev,
1029                               struct device_attribute *attr, const char *buf,
1030                               size_t count)
1031{
1032        struct asus_laptop *asus = dev_get_drvdata(dev);
1033
1034        return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1035}
1036static DEVICE_ATTR_RW(bluetooth);
1037
1038/*
1039 * Wimax
1040 */
1041static int asus_wimax_set(struct asus_laptop *asus, int status)
1042{
1043        if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1044                pr_warn("Error setting wimax status to %d\n", status);
1045                return -EIO;
1046        }
1047        return 0;
1048}
1049
1050static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
1051                          char *buf)
1052{
1053        struct asus_laptop *asus = dev_get_drvdata(dev);
1054
1055        return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1056}
1057
1058static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
1059                           const char *buf, size_t count)
1060{
1061        struct asus_laptop *asus = dev_get_drvdata(dev);
1062
1063        return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1064}
1065static DEVICE_ATTR_RW(wimax);
1066
1067/*
1068 * Wwan
1069 */
1070static int asus_wwan_set(struct asus_laptop *asus, int status)
1071{
1072        if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1073                pr_warn("Error setting wwan status to %d\n", status);
1074                return -EIO;
1075        }
1076        return 0;
1077}
1078
1079static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
1080                         char *buf)
1081{
1082        struct asus_laptop *asus = dev_get_drvdata(dev);
1083
1084        return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1085}
1086
1087static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
1088                          const char *buf, size_t count)
1089{
1090        struct asus_laptop *asus = dev_get_drvdata(dev);
1091
1092        return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1093}
1094static DEVICE_ATTR_RW(wwan);
1095
1096/*
1097 * Display
1098 */
1099static void asus_set_display(struct asus_laptop *asus, int value)
1100{
1101        /* no sanity check needed for now */
1102        if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1103                pr_warn("Error setting display\n");
1104        return;
1105}
1106
1107/*
1108 * Experimental support for display switching. As of now: 1 should activate
1109 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1110 * Any combination (bitwise) of these will suffice. I never actually tested 4
1111 * displays hooked up simultaneously, so be warned. See the acpi4asus README
1112 * for more info.
1113 */
1114static ssize_t display_store(struct device *dev, struct device_attribute *attr,
1115                             const char *buf, size_t count)
1116{
1117        struct asus_laptop *asus = dev_get_drvdata(dev);
1118        int rv, value;
1119
1120        rv = kstrtoint(buf, 0, &value);
1121        if (rv < 0)
1122                return rv;
1123
1124        asus_set_display(asus, value);
1125        return count;
1126}
1127static DEVICE_ATTR_WO(display);
1128
1129/*
1130 * Light Sens
1131 */
1132static void asus_als_switch(struct asus_laptop *asus, int value)
1133{
1134        int ret;
1135
1136        if (asus->is_pega_lucid) {
1137                ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1138                if (!ret)
1139                        ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1140        } else {
1141                ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1142        }
1143        if (ret)
1144                pr_warn("Error setting light sensor switch\n");
1145
1146        asus->light_switch = value;
1147}
1148
1149static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
1150                              char *buf)
1151{
1152        struct asus_laptop *asus = dev_get_drvdata(dev);
1153
1154        return sprintf(buf, "%d\n", asus->light_switch);
1155}
1156
1157static ssize_t ls_switch_store(struct device *dev,
1158                               struct device_attribute *attr, const char *buf,
1159                               size_t count)
1160{
1161        struct asus_laptop *asus = dev_get_drvdata(dev);
1162        int rv, value;
1163
1164        rv = kstrtoint(buf, 0, &value);
1165        if (rv < 0)
1166                return rv;
1167
1168        asus_als_switch(asus, value ? 1 : 0);
1169        return count;
1170}
1171static DEVICE_ATTR_RW(ls_switch);
1172
1173static void asus_als_level(struct asus_laptop *asus, int value)
1174{
1175        if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1176                pr_warn("Error setting light sensor level\n");
1177        asus->light_level = value;
1178}
1179
1180static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
1181                             char *buf)
1182{
1183        struct asus_laptop *asus = dev_get_drvdata(dev);
1184
1185        return sprintf(buf, "%d\n", asus->light_level);
1186}
1187
1188static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
1189                              const char *buf, size_t count)
1190{
1191        struct asus_laptop *asus = dev_get_drvdata(dev);
1192        int rv, value;
1193
1194        rv = kstrtoint(buf, 0, &value);
1195        if (rv < 0)
1196                return rv;
1197
1198        value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1199        /* 0 <= value <= 15 */
1200        asus_als_level(asus, value);
1201
1202        return count;
1203}
1204static DEVICE_ATTR_RW(ls_level);
1205
1206static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1207{
1208        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1209        int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1210                                     &buffer);
1211        if (!err) {
1212                union acpi_object *obj = buffer.pointer;
1213                if (obj && obj->type == ACPI_TYPE_INTEGER)
1214                        *result = obj->integer.value;
1215                else
1216                        err = -EIO;
1217        }
1218        return err;
1219}
1220
1221static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
1222                             char *buf)
1223{
1224        struct asus_laptop *asus = dev_get_drvdata(dev);
1225        int err, hi, lo;
1226
1227        err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1228        if (!err)
1229                err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1230        if (!err)
1231                return sprintf(buf, "%d\n", 10 * hi + lo);
1232        return err;
1233}
1234static DEVICE_ATTR_RO(ls_value);
1235
1236/*
1237 * GPS
1238 */
1239static int asus_gps_status(struct asus_laptop *asus)
1240{
1241        unsigned long long status;
1242        acpi_status rv;
1243
1244        rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1245                                   NULL, &status);
1246        if (ACPI_FAILURE(rv)) {
1247                pr_warn("Error reading GPS status\n");
1248                return -ENODEV;
1249        }
1250        return !!status;
1251}
1252
1253static int asus_gps_switch(struct asus_laptop *asus, int status)
1254{
1255        const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1256
1257        if (write_acpi_int(asus->handle, meth, 0x02))
1258                return -ENODEV;
1259        return 0;
1260}
1261
1262static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
1263                        char *buf)
1264{
1265        struct asus_laptop *asus = dev_get_drvdata(dev);
1266
1267        return sprintf(buf, "%d\n", asus_gps_status(asus));
1268}
1269
1270static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
1271                         const char *buf, size_t count)
1272{
1273        struct asus_laptop *asus = dev_get_drvdata(dev);
1274        int rv, value;
1275        int ret;
1276
1277        rv = kstrtoint(buf, 0, &value);
1278        if (rv < 0)
1279                return rv;
1280        ret = asus_gps_switch(asus, !!value);
1281        if (ret)
1282                return ret;
1283        rfkill_set_sw_state(asus->gps.rfkill, !value);
1284        return count;
1285}
1286static DEVICE_ATTR_RW(gps);
1287
1288/*
1289 * rfkill
1290 */
1291static int asus_gps_rfkill_set(void *data, bool blocked)
1292{
1293        struct asus_laptop *asus = data;
1294
1295        return asus_gps_switch(asus, !blocked);
1296}
1297
1298static const struct rfkill_ops asus_gps_rfkill_ops = {
1299        .set_block = asus_gps_rfkill_set,
1300};
1301
1302static int asus_rfkill_set(void *data, bool blocked)
1303{
1304        struct asus_rfkill *rfk = data;
1305        struct asus_laptop *asus = rfk->asus;
1306
1307        if (rfk->control_id == WL_RSTS)
1308                return asus_wlan_set(asus, !blocked);
1309        else if (rfk->control_id == BT_RSTS)
1310                return asus_bluetooth_set(asus, !blocked);
1311        else if (rfk->control_id == WM_RSTS)
1312                return asus_wimax_set(asus, !blocked);
1313        else if (rfk->control_id == WW_RSTS)
1314                return asus_wwan_set(asus, !blocked);
1315
1316        return -EINVAL;
1317}
1318
1319static const struct rfkill_ops asus_rfkill_ops = {
1320        .set_block = asus_rfkill_set,
1321};
1322
1323static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1324{
1325        if (!rfk->rfkill)
1326                return ;
1327
1328        rfkill_unregister(rfk->rfkill);
1329        rfkill_destroy(rfk->rfkill);
1330        rfk->rfkill = NULL;
1331}
1332
1333static void asus_rfkill_exit(struct asus_laptop *asus)
1334{
1335        asus_rfkill_terminate(&asus->wwan);
1336        asus_rfkill_terminate(&asus->bluetooth);
1337        asus_rfkill_terminate(&asus->wlan);
1338        asus_rfkill_terminate(&asus->gps);
1339}
1340
1341static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1342                             const char *name, int control_id, int type,
1343                             const struct rfkill_ops *ops)
1344{
1345        int result;
1346
1347        rfk->control_id = control_id;
1348        rfk->asus = asus;
1349        rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1350                                   type, ops, rfk);
1351        if (!rfk->rfkill)
1352                return -EINVAL;
1353
1354        result = rfkill_register(rfk->rfkill);
1355        if (result) {
1356                rfkill_destroy(rfk->rfkill);
1357                rfk->rfkill = NULL;
1358        }
1359
1360        return result;
1361}
1362
1363static int asus_rfkill_init(struct asus_laptop *asus)
1364{
1365        int result = 0;
1366
1367        if (asus->is_pega_lucid)
1368                return -ENODEV;
1369
1370        if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1371            !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1372            !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1373                result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1374                                           -1, RFKILL_TYPE_GPS,
1375                                           &asus_gps_rfkill_ops);
1376        if (result)
1377                goto exit;
1378
1379
1380        if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1381            asus->wled_type == TYPE_RFKILL)
1382                result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1383                                           WL_RSTS, RFKILL_TYPE_WLAN,
1384                                           &asus_rfkill_ops);
1385        if (result)
1386                goto exit;
1387
1388        if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1389            asus->bled_type == TYPE_RFKILL)
1390                result = asus_rfkill_setup(asus, &asus->bluetooth,
1391                                           "asus-bluetooth", BT_RSTS,
1392                                           RFKILL_TYPE_BLUETOOTH,
1393                                           &asus_rfkill_ops);
1394        if (result)
1395                goto exit;
1396
1397        if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1398                result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1399                                           WW_RSTS, RFKILL_TYPE_WWAN,
1400                                           &asus_rfkill_ops);
1401        if (result)
1402                goto exit;
1403
1404        if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1405                result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1406                                           WM_RSTS, RFKILL_TYPE_WIMAX,
1407                                           &asus_rfkill_ops);
1408        if (result)
1409                goto exit;
1410
1411exit:
1412        if (result)
1413                asus_rfkill_exit(asus);
1414
1415        return result;
1416}
1417
1418static int pega_rfkill_set(void *data, bool blocked)
1419{
1420        struct asus_rfkill *rfk = data;
1421
1422        int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1423        return ret;
1424}
1425
1426static const struct rfkill_ops pega_rfkill_ops = {
1427        .set_block = pega_rfkill_set,
1428};
1429
1430static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1431                             const char *name, int controlid, int rfkill_type)
1432{
1433        return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1434                                 &pega_rfkill_ops);
1435}
1436
1437static int pega_rfkill_init(struct asus_laptop *asus)
1438{
1439        int ret = 0;
1440
1441        if(!asus->is_pega_lucid)
1442                return -ENODEV;
1443
1444        ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1445                                PEGA_WLAN, RFKILL_TYPE_WLAN);
1446        if(ret)
1447                goto exit;
1448
1449        ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1450                                PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1451        if(ret)
1452                goto exit;
1453
1454        ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1455                                PEGA_WWAN, RFKILL_TYPE_WWAN);
1456
1457exit:
1458        if (ret)
1459                asus_rfkill_exit(asus);
1460
1461        return ret;
1462}
1463
1464/*
1465 * Input device (i.e. hotkeys)
1466 */
1467static void asus_input_notify(struct asus_laptop *asus, int event)
1468{
1469        if (!asus->inputdev)
1470                return ;
1471        if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1472                pr_info("Unknown key %x pressed\n", event);
1473}
1474
1475static int asus_input_init(struct asus_laptop *asus)
1476{
1477        struct input_dev *input;
1478        int error;
1479
1480        input = input_allocate_device();
1481        if (!input)
1482                return -ENOMEM;
1483
1484        input->name = "Asus Laptop extra buttons";
1485        input->phys = ASUS_LAPTOP_FILE "/input0";
1486        input->id.bustype = BUS_HOST;
1487        input->dev.parent = &asus->platform_device->dev;
1488
1489        error = sparse_keymap_setup(input, asus_keymap, NULL);
1490        if (error) {
1491                pr_err("Unable to setup input device keymap\n");
1492                goto err_free_dev;
1493        }
1494        error = input_register_device(input);
1495        if (error) {
1496                pr_warn("Unable to register input device\n");
1497                goto err_free_dev;
1498        }
1499
1500        asus->inputdev = input;
1501        return 0;
1502
1503err_free_dev:
1504        input_free_device(input);
1505        return error;
1506}
1507
1508static void asus_input_exit(struct asus_laptop *asus)
1509{
1510        if (asus->inputdev)
1511                input_unregister_device(asus->inputdev);
1512        asus->inputdev = NULL;
1513}
1514
1515/*
1516 * ACPI driver
1517 */
1518static void asus_acpi_notify(struct acpi_device *device, u32 event)
1519{
1520        struct asus_laptop *asus = acpi_driver_data(device);
1521        u16 count;
1522
1523        /* TODO Find a better way to handle events count. */
1524        count = asus->event_count[event % 128]++;
1525        acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1526                                        dev_name(&asus->device->dev), event,
1527                                        count);
1528
1529        if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1530                event = ATKD_BRNUP;
1531        else if (event >= ATKD_BRNDOWN_MIN &&
1532                 event <= ATKD_BRNDOWN_MAX)
1533                event = ATKD_BRNDOWN;
1534
1535        /* Brightness events are special */
1536        if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1537                if (asus->backlight_device != NULL) {
1538                        /* Update the backlight device. */
1539                        asus_backlight_notify(asus);
1540                        return ;
1541                }
1542        }
1543
1544        /* Accelerometer "coarse orientation change" event */
1545        if (asus->pega_accel_poll && event == 0xEA) {
1546                kobject_uevent(&asus->pega_accel_poll->dev.kobj, KOBJ_CHANGE);
1547                return ;
1548        }
1549
1550        asus_input_notify(asus, event);
1551}
1552
1553static struct attribute *asus_attributes[] = {
1554        &dev_attr_infos.attr,
1555        &dev_attr_wlan.attr,
1556        &dev_attr_bluetooth.attr,
1557        &dev_attr_wimax.attr,
1558        &dev_attr_wwan.attr,
1559        &dev_attr_display.attr,
1560        &dev_attr_ledd.attr,
1561        &dev_attr_ls_value.attr,
1562        &dev_attr_ls_level.attr,
1563        &dev_attr_ls_switch.attr,
1564        &dev_attr_gps.attr,
1565        NULL
1566};
1567
1568static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1569                                    struct attribute *attr,
1570                                    int idx)
1571{
1572        struct device *dev = kobj_to_dev(kobj);
1573        struct asus_laptop *asus = dev_get_drvdata(dev);
1574        acpi_handle handle = asus->handle;
1575        bool supported;
1576
1577        if (asus->is_pega_lucid) {
1578                /* no ls_level interface on the Lucid */
1579                if (attr == &dev_attr_ls_switch.attr)
1580                        supported = true;
1581                else if (attr == &dev_attr_ls_level.attr)
1582                        supported = false;
1583                else
1584                        goto normal;
1585
1586                return supported ? attr->mode : 0;
1587        }
1588
1589normal:
1590        if (attr == &dev_attr_wlan.attr) {
1591                supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1592
1593        } else if (attr == &dev_attr_bluetooth.attr) {
1594                supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1595
1596        } else if (attr == &dev_attr_display.attr) {
1597                supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1598
1599        } else if (attr == &dev_attr_wimax.attr) {
1600                supported =
1601                        !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1602
1603        } else if (attr == &dev_attr_wwan.attr) {
1604                supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1605
1606        } else if (attr == &dev_attr_ledd.attr) {
1607                supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1608
1609        } else if (attr == &dev_attr_ls_switch.attr ||
1610                   attr == &dev_attr_ls_level.attr) {
1611                supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1612                        !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1613        } else if (attr == &dev_attr_ls_value.attr) {
1614                supported = asus->is_pega_lucid;
1615        } else if (attr == &dev_attr_gps.attr) {
1616                supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1617                            !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1618                            !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1619        } else {
1620                supported = true;
1621        }
1622
1623        return supported ? attr->mode : 0;
1624}
1625
1626
1627static const struct attribute_group asus_attr_group = {
1628        .is_visible     = asus_sysfs_is_visible,
1629        .attrs          = asus_attributes,
1630};
1631
1632static int asus_platform_init(struct asus_laptop *asus)
1633{
1634        int result;
1635
1636        asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1637        if (!asus->platform_device)
1638                return -ENOMEM;
1639        platform_set_drvdata(asus->platform_device, asus);
1640
1641        result = platform_device_add(asus->platform_device);
1642        if (result)
1643                goto fail_platform_device;
1644
1645        result = sysfs_create_group(&asus->platform_device->dev.kobj,
1646                                    &asus_attr_group);
1647        if (result)
1648                goto fail_sysfs;
1649
1650        return 0;
1651
1652fail_sysfs:
1653        platform_device_del(asus->platform_device);
1654fail_platform_device:
1655        platform_device_put(asus->platform_device);
1656        return result;
1657}
1658
1659static void asus_platform_exit(struct asus_laptop *asus)
1660{
1661        sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1662        platform_device_unregister(asus->platform_device);
1663}
1664
1665static struct platform_driver platform_driver = {
1666        .driver = {
1667                .name = ASUS_LAPTOP_FILE,
1668        },
1669};
1670
1671/*
1672 * This function is used to initialize the context with right values. In this
1673 * method, we can make all the detection we want, and modify the asus_laptop
1674 * struct
1675 */
1676static int asus_laptop_get_info(struct asus_laptop *asus)
1677{
1678        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1679        union acpi_object *model = NULL;
1680        unsigned long long bsts_result;
1681        char *string = NULL;
1682        acpi_status status;
1683
1684        /*
1685         * Get DSDT headers early enough to allow for differentiating between
1686         * models, but late enough to allow acpi_bus_register_driver() to fail
1687         * before doing anything ACPI-specific. Should we encounter a machine,
1688         * which needs special handling (i.e. its hotkey device has a different
1689         * HID), this bit will be moved.
1690         */
1691        status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1692        if (ACPI_FAILURE(status))
1693                pr_warn("Couldn't get the DSDT table header\n");
1694
1695        /* We have to write 0 on init this far for all ASUS models */
1696        if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1697                pr_err("Hotkey initialization failed\n");
1698                return -ENODEV;
1699        }
1700
1701        /* This needs to be called for some laptops to init properly */
1702        status =
1703            acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1704        if (ACPI_FAILURE(status))
1705                pr_warn("Error calling BSTS\n");
1706        else if (bsts_result)
1707                pr_notice("BSTS called, 0x%02x returned\n",
1708                       (uint) bsts_result);
1709
1710        /* This too ... */
1711        if (write_acpi_int(asus->handle, "CWAP", wapf))
1712                pr_err("Error calling CWAP(%d)\n", wapf);
1713        /*
1714         * Try to match the object returned by INIT to the specific model.
1715         * Handle every possible object (or the lack of thereof) the DSDT
1716         * writers might throw at us. When in trouble, we pass NULL to
1717         * asus_model_match() and try something completely different.
1718         */
1719        if (buffer.pointer) {
1720                model = buffer.pointer;
1721                switch (model->type) {
1722                case ACPI_TYPE_STRING:
1723                        string = model->string.pointer;
1724                        break;
1725                case ACPI_TYPE_BUFFER:
1726                        string = model->buffer.pointer;
1727                        break;
1728                default:
1729                        string = "";
1730                        break;
1731                }
1732        }
1733        asus->name = kstrdup(string, GFP_KERNEL);
1734        if (!asus->name) {
1735                kfree(buffer.pointer);
1736                return -ENOMEM;
1737        }
1738
1739        if (string)
1740                pr_notice("  %s model detected\n", string);
1741
1742        if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1743                asus->have_rsts = true;
1744
1745        kfree(model);
1746
1747        return AE_OK;
1748}
1749
1750static int asus_acpi_init(struct asus_laptop *asus)
1751{
1752        int result = 0;
1753
1754        result = acpi_bus_get_status(asus->device);
1755        if (result)
1756                return result;
1757        if (!asus->device->status.present) {
1758                pr_err("Hotkey device not present, aborting\n");
1759                return -ENODEV;
1760        }
1761
1762        result = asus_laptop_get_info(asus);
1763        if (result)
1764                return result;
1765
1766        if (!strcmp(bled_type, "led"))
1767                asus->bled_type = TYPE_LED;
1768        else if (!strcmp(bled_type, "rfkill"))
1769                asus->bled_type = TYPE_RFKILL;
1770
1771        if (!strcmp(wled_type, "led"))
1772                asus->wled_type = TYPE_LED;
1773        else if (!strcmp(wled_type, "rfkill"))
1774                asus->wled_type = TYPE_RFKILL;
1775
1776        if (bluetooth_status >= 0)
1777                asus_bluetooth_set(asus, !!bluetooth_status);
1778
1779        if (wlan_status >= 0)
1780                asus_wlan_set(asus, !!wlan_status);
1781
1782        if (wimax_status >= 0)
1783                asus_wimax_set(asus, !!wimax_status);
1784
1785        if (wwan_status >= 0)
1786                asus_wwan_set(asus, !!wwan_status);
1787
1788        /* Keyboard Backlight is on by default */
1789        if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1790                asus_kled_set(asus, 1);
1791
1792        /* LED display is off by default */
1793        asus->ledd_status = 0xFFF;
1794
1795        /* Set initial values of light sensor and level */
1796        asus->light_switch = !!als_status;
1797        asus->light_level = 5;  /* level 5 for sensor sensitivity */
1798
1799        if (asus->is_pega_lucid) {
1800                asus_als_switch(asus, asus->light_switch);
1801        } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1802                   !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1803                asus_als_switch(asus, asus->light_switch);
1804                asus_als_level(asus, asus->light_level);
1805        }
1806
1807        return result;
1808}
1809
1810static void asus_dmi_check(void)
1811{
1812        const char *model;
1813
1814        model = dmi_get_system_info(DMI_PRODUCT_NAME);
1815        if (!model)
1816                return;
1817
1818        /* On L1400B WLED control the sound card, don't mess with it ... */
1819        if (strncmp(model, "L1400B", 6) == 0) {
1820                wlan_status = -1;
1821        }
1822}
1823
1824static bool asus_device_present;
1825
1826static int asus_acpi_add(struct acpi_device *device)
1827{
1828        struct asus_laptop *asus;
1829        int result;
1830
1831        pr_notice("Asus Laptop Support version %s\n",
1832                  ASUS_LAPTOP_VERSION);
1833        asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1834        if (!asus)
1835                return -ENOMEM;
1836        asus->handle = device->handle;
1837        strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1838        strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1839        device->driver_data = asus;
1840        asus->device = device;
1841
1842        asus_dmi_check();
1843
1844        result = asus_acpi_init(asus);
1845        if (result)
1846                goto fail_platform;
1847
1848        /*
1849         * Need platform type detection first, then the platform
1850         * device.  It is used as a parent for the sub-devices below.
1851         */
1852        asus->is_pega_lucid = asus_check_pega_lucid(asus);
1853        result = asus_platform_init(asus);
1854        if (result)
1855                goto fail_platform;
1856
1857        if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1858                result = asus_backlight_init(asus);
1859                if (result)
1860                        goto fail_backlight;
1861        }
1862
1863        result = asus_input_init(asus);
1864        if (result)
1865                goto fail_input;
1866
1867        result = asus_led_init(asus);
1868        if (result)
1869                goto fail_led;
1870
1871        result = asus_rfkill_init(asus);
1872        if (result && result != -ENODEV)
1873                goto fail_rfkill;
1874
1875        result = pega_accel_init(asus);
1876        if (result && result != -ENODEV)
1877                goto fail_pega_accel;
1878
1879        result = pega_rfkill_init(asus);
1880        if (result && result != -ENODEV)
1881                goto fail_pega_rfkill;
1882
1883        asus_device_present = true;
1884        return 0;
1885
1886fail_pega_rfkill:
1887        pega_accel_exit(asus);
1888fail_pega_accel:
1889        asus_rfkill_exit(asus);
1890fail_rfkill:
1891        asus_led_exit(asus);
1892fail_led:
1893        asus_input_exit(asus);
1894fail_input:
1895        asus_backlight_exit(asus);
1896fail_backlight:
1897        asus_platform_exit(asus);
1898fail_platform:
1899        kfree(asus);
1900
1901        return result;
1902}
1903
1904static int asus_acpi_remove(struct acpi_device *device)
1905{
1906        struct asus_laptop *asus = acpi_driver_data(device);
1907
1908        asus_backlight_exit(asus);
1909        asus_rfkill_exit(asus);
1910        asus_led_exit(asus);
1911        asus_input_exit(asus);
1912        pega_accel_exit(asus);
1913        asus_platform_exit(asus);
1914
1915        kfree(asus->name);
1916        kfree(asus);
1917        return 0;
1918}
1919
1920static const struct acpi_device_id asus_device_ids[] = {
1921        {"ATK0100", 0},
1922        {"ATK0101", 0},
1923        {"", 0},
1924};
1925MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1926
1927static struct acpi_driver asus_acpi_driver = {
1928        .name = ASUS_LAPTOP_NAME,
1929        .class = ASUS_LAPTOP_CLASS,
1930        .owner = THIS_MODULE,
1931        .ids = asus_device_ids,
1932        .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1933        .ops = {
1934                .add = asus_acpi_add,
1935                .remove = asus_acpi_remove,
1936                .notify = asus_acpi_notify,
1937                },
1938};
1939
1940static int __init asus_laptop_init(void)
1941{
1942        int result;
1943
1944        result = platform_driver_register(&platform_driver);
1945        if (result < 0)
1946                return result;
1947
1948        result = acpi_bus_register_driver(&asus_acpi_driver);
1949        if (result < 0)
1950                goto fail_acpi_driver;
1951        if (!asus_device_present) {
1952                result = -ENODEV;
1953                goto fail_no_device;
1954        }
1955        return 0;
1956
1957fail_no_device:
1958        acpi_bus_unregister_driver(&asus_acpi_driver);
1959fail_acpi_driver:
1960        platform_driver_unregister(&platform_driver);
1961        return result;
1962}
1963
1964static void __exit asus_laptop_exit(void)
1965{
1966        acpi_bus_unregister_driver(&asus_acpi_driver);
1967        platform_driver_unregister(&platform_driver);
1968}
1969
1970module_init(asus_laptop_init);
1971module_exit(asus_laptop_exit);
1972