linux/drivers/platform/x86/asus-laptop.c
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   1/*
   2 *  asus-laptop.c - Asus Laptop Support
   3 *
   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 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22 *
  23 *
  24 *  The development page for this driver is located at
  25 *  http://sourceforge.net/projects/acpi4asus/
  26 *
  27 *  Credits:
  28 *  Pontus Fuchs   - Helper functions, cleanup
  29 *  Johann Wiesner - Small compile fixes
  30 *  John Belmonte  - ACPI code for Toshiba laptop was a good starting point.
  31 *  Eric Burghard  - LED display support for W1N
  32 *  Josh Green     - Light Sens support
  33 *  Thomas Tuttle  - His first patch for led support was very helpful
  34 *  Sam Lin        - GPS support
  35 */
  36
  37#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  38
  39#include <linux/kernel.h>
  40#include <linux/module.h>
  41#include <linux/init.h>
  42#include <linux/types.h>
  43#include <linux/err.h>
  44#include <linux/proc_fs.h>
  45#include <linux/backlight.h>
  46#include <linux/fb.h>
  47#include <linux/leds.h>
  48#include <linux/platform_device.h>
  49#include <linux/uaccess.h>
  50#include <linux/input.h>
  51#include <linux/input/sparse-keymap.h>
  52#include <linux/input-polldev.h>
  53#include <linux/rfkill.h>
  54#include <linux/slab.h>
  55#include <linux/dmi.h>
  56#include <linux/acpi.h>
  57#include <acpi/video.h>
  58
  59#define ASUS_LAPTOP_VERSION     "0.42"
  60
  61#define ASUS_LAPTOP_NAME        "Asus Laptop Support"
  62#define ASUS_LAPTOP_CLASS       "hotkey"
  63#define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
  64#define ASUS_LAPTOP_FILE        KBUILD_MODNAME
  65#define ASUS_LAPTOP_PREFIX      "\\_SB.ATKD."
  66
  67MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
  68MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
  69MODULE_LICENSE("GPL");
  70
  71/*
  72 * WAPF defines the behavior of the Fn+Fx wlan key
  73 * The significance of values is yet to be found, but
  74 * most of the time:
  75 * Bit | Bluetooth | WLAN
  76 *  0  | Hardware  | Hardware
  77 *  1  | Hardware  | Software
  78 *  4  | Software  | Software
  79 */
  80static uint wapf = 1;
  81module_param(wapf, uint, 0444);
  82MODULE_PARM_DESC(wapf, "WAPF value");
  83
  84static char *wled_type = "unknown";
  85static char *bled_type = "unknown";
  86
  87module_param(wled_type, charp, 0444);
  88MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
  89                 "(unknown, led or rfkill). "
  90                 "default is unknown");
  91
  92module_param(bled_type, charp, 0444);
  93MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
  94                 "(unknown, led or rfkill). "
  95                 "default is unknown");
  96
  97static int wlan_status = 1;
  98static int bluetooth_status = 1;
  99static int wimax_status = -1;
 100static int wwan_status = -1;
 101static int als_status;
 102
 103module_param(wlan_status, int, 0444);
 104MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
 105                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 106                 "default is -1");
 107
 108module_param(bluetooth_status, int, 0444);
 109MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
 110                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 111                 "default is -1");
 112
 113module_param(wimax_status, int, 0444);
 114MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
 115                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 116                 "default is -1");
 117
 118module_param(wwan_status, int, 0444);
 119MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
 120                 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 121                 "default is -1");
 122
 123module_param(als_status, int, 0444);
 124MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
 125                 "(0 = disabled, 1 = enabled). "
 126                 "default is 0");
 127
 128/*
 129 * Some events we use, same for all Asus
 130 */
 131#define ATKD_BRNUP_MIN          0x10
 132#define ATKD_BRNUP_MAX          0x1f
 133#define ATKD_BRNDOWN_MIN        0x20
 134#define ATKD_BRNDOWN_MAX        0x2f
 135#define ATKD_BRNDOWN            0x20
 136#define ATKD_BRNUP              0x2f
 137#define ATKD_LCD_ON     0x33
 138#define ATKD_LCD_OFF    0x34
 139
 140/*
 141 * Known bits returned by \_SB.ATKD.HWRS
 142 */
 143#define WL_HWRS         0x80
 144#define BT_HWRS         0x100
 145
 146/*
 147 * Flags for hotk status
 148 * WL_ON and BT_ON are also used for wireless_status()
 149 */
 150#define WL_RSTS         0x01    /* internal Wifi */
 151#define BT_RSTS         0x02    /* internal Bluetooth */
 152#define WM_RSTS         0x08    /* internal wimax */
 153#define WW_RSTS         0x20    /* internal wwan */
 154
 155/* WLED and BLED type */
 156#define TYPE_UNKNOWN    0
 157#define TYPE_LED        1
 158#define TYPE_RFKILL     2
 159
 160/* LED */
 161#define METHOD_MLED             "MLED"
 162#define METHOD_TLED             "TLED"
 163#define METHOD_RLED             "RLED"  /* W1JC */
 164#define METHOD_PLED             "PLED"  /* A7J */
 165#define METHOD_GLED             "GLED"  /* G1, G2 (probably) */
 166
 167/* LEDD */
 168#define METHOD_LEDD             "SLCM"
 169
 170/*
 171 * Bluetooth and WLAN
 172 * WLED and BLED are not handled like other XLED, because in some dsdt
 173 * they also control the WLAN/Bluetooth device.
 174 */
 175#define METHOD_WLAN             "WLED"
 176#define METHOD_BLUETOOTH        "BLED"
 177
 178/* WWAN and WIMAX */
 179#define METHOD_WWAN             "GSMC"
 180#define METHOD_WIMAX            "WMXC"
 181
 182#define METHOD_WL_STATUS        "RSTS"
 183
 184/* Brightness */
 185#define METHOD_BRIGHTNESS_SET   "SPLV"
 186#define METHOD_BRIGHTNESS_GET   "GPLV"
 187
 188/* Display */
 189#define METHOD_SWITCH_DISPLAY   "SDSP"
 190
 191#define METHOD_ALS_CONTROL      "ALSC" /* Z71A Z71V */
 192#define METHOD_ALS_LEVEL        "ALSL" /* Z71A Z71V */
 193
 194/* GPS */
 195/* R2H use different handle for GPS on/off */
 196#define METHOD_GPS_ON           "SDON"
 197#define METHOD_GPS_OFF          "SDOF"
 198#define METHOD_GPS_STATUS       "GPST"
 199
 200/* Keyboard light */
 201#define METHOD_KBD_LIGHT_SET    "SLKB"
 202#define METHOD_KBD_LIGHT_GET    "GLKB"
 203
 204/* For Pegatron Lucid tablet */
 205#define DEVICE_NAME_PEGA        "Lucid"
 206
 207#define METHOD_PEGA_ENABLE      "ENPR"
 208#define METHOD_PEGA_DISABLE     "DAPR"
 209#define PEGA_WLAN       0x00
 210#define PEGA_BLUETOOTH  0x01
 211#define PEGA_WWAN       0x02
 212#define PEGA_ALS        0x04
 213#define PEGA_ALS_POWER  0x05
 214
 215#define METHOD_PEGA_READ        "RDLN"
 216#define PEGA_READ_ALS_H 0x02
 217#define PEGA_READ_ALS_L 0x03
 218
 219#define PEGA_ACCEL_NAME "pega_accel"
 220#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
 221#define METHOD_XLRX "XLRX"
 222#define METHOD_XLRY "XLRY"
 223#define METHOD_XLRZ "XLRZ"
 224#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
 225#define PEGA_ACC_RETRIES 3
 226
 227/*
 228 * Define a specific led structure to keep the main structure clean
 229 */
 230struct asus_led {
 231        int wk;
 232        struct work_struct work;
 233        struct led_classdev led;
 234        struct asus_laptop *asus;
 235        const char *method;
 236};
 237
 238/*
 239 * Same thing for rfkill
 240 */
 241struct asus_rfkill {
 242        /* type of control. Maps to PEGA_* values or *_RSTS  */
 243        int control_id;
 244        struct rfkill *rfkill;
 245        struct asus_laptop *asus;
 246};
 247
 248/*
 249 * This is the main structure, we can use it to store anything interesting
 250 * about the hotk device
 251 */
 252struct asus_laptop {
 253        char *name;             /* laptop name */
 254
 255        struct acpi_table_header *dsdt_info;
 256        struct platform_device *platform_device;
 257        struct acpi_device *device;             /* the device we are in */
 258        struct backlight_device *backlight_device;
 259
 260        struct input_dev *inputdev;
 261        struct key_entry *keymap;
 262        struct input_polled_dev *pega_accel_poll;
 263
 264        struct asus_led wled;
 265        struct asus_led bled;
 266        struct asus_led mled;
 267        struct asus_led tled;
 268        struct asus_led rled;
 269        struct asus_led pled;
 270        struct asus_led gled;
 271        struct asus_led kled;
 272        struct workqueue_struct *led_workqueue;
 273
 274        int wled_type;
 275        int bled_type;
 276        int wireless_status;
 277        bool have_rsts;
 278        bool is_pega_lucid;
 279        bool pega_acc_live;
 280        int pega_acc_x;
 281        int pega_acc_y;
 282        int pega_acc_z;
 283
 284        struct asus_rfkill wlan;
 285        struct asus_rfkill bluetooth;
 286        struct asus_rfkill wwan;
 287        struct asus_rfkill wimax;
 288        struct asus_rfkill gps;
 289
 290        acpi_handle handle;     /* the handle of the hotk device */
 291        u32 ledd_status;        /* status of the LED display */
 292        u8 light_level;         /* light sensor level */
 293        u8 light_switch;        /* light sensor switch value */
 294        u16 event_count[128];   /* count for each event TODO make this better */
 295};
 296
 297static const struct key_entry asus_keymap[] = {
 298        /* Lenovo SL Specific keycodes */
 299        {KE_KEY, 0x02, { KEY_SCREENLOCK } },
 300        {KE_KEY, 0x05, { KEY_WLAN } },
 301        {KE_KEY, 0x08, { KEY_F13 } },
 302        {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
 303        {KE_KEY, 0x17, { KEY_ZOOM } },
 304        {KE_KEY, 0x1f, { KEY_BATTERY } },
 305        /* End of Lenovo SL Specific keycodes */
 306        {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } },
 307        {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } },
 308        {KE_KEY, 0x30, { KEY_VOLUMEUP } },
 309        {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 310        {KE_KEY, 0x32, { KEY_MUTE } },
 311        {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
 312        {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
 313        {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
 314        {KE_KEY, 0x41, { KEY_NEXTSONG } },
 315        {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
 316        {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
 317        {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
 318        {KE_KEY, 0x50, { KEY_EMAIL } },
 319        {KE_KEY, 0x51, { KEY_WWW } },
 320        {KE_KEY, 0x55, { KEY_CALC } },
 321        {KE_IGNORE, 0x57, },  /* Battery mode */
 322        {KE_IGNORE, 0x58, },  /* AC mode */
 323        {KE_KEY, 0x5C, { KEY_SCREENLOCK } },  /* Screenlock */
 324        {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */
 325        {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */
 326        {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */
 327        {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
 328        {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
 329        {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
 330        {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
 331        {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
 332        {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
 333        {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
 334        {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
 335        {KE_KEY, 0x6A, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad Fn + F9 */
 336        {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
 337        {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
 338        {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
 339        {KE_IGNORE, 0x6E, },  /* Low Battery notification */
 340        {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
 341        {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
 342        {KE_KEY, 0x82, { KEY_CAMERA } },
 343        {KE_KEY, 0x88, { KEY_RFKILL  } }, /* Radio Toggle Key */
 344        {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
 345        {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
 346        {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
 347        {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
 348        {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
 349        {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
 350        {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
 351        {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
 352        {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
 353        {KE_KEY, 0x95, { KEY_MEDIA } },
 354        {KE_KEY, 0x99, { KEY_PHONE } },
 355        {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
 356        {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
 357        {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
 358        {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
 359        {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
 360        {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
 361        {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
 362        {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
 363        {KE_KEY, 0xB5, { KEY_CALC } },
 364        {KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
 365        {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
 366        {KE_END, 0},
 367};
 368
 369
 370/*
 371 * This function evaluates an ACPI method, given an int as parameter, the
 372 * method is searched within the scope of the handle, can be NULL. The output
 373 * of the method is written is output, which can also be NULL
 374 *
 375 * returns 0 if write is successful, -1 else.
 376 */
 377static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
 378                              struct acpi_buffer *output)
 379{
 380        struct acpi_object_list params; /* list of input parameters (an int) */
 381        union acpi_object in_obj;       /* the only param we use */
 382        acpi_status status;
 383
 384        if (!handle)
 385                return -1;
 386
 387        params.count = 1;
 388        params.pointer = &in_obj;
 389        in_obj.type = ACPI_TYPE_INTEGER;
 390        in_obj.integer.value = val;
 391
 392        status = acpi_evaluate_object(handle, (char *)method, &params, output);
 393        if (status == AE_OK)
 394                return 0;
 395        else
 396                return -1;
 397}
 398
 399static int write_acpi_int(acpi_handle handle, const char *method, int val)
 400{
 401        return write_acpi_int_ret(handle, method, val, NULL);
 402}
 403
 404static int acpi_check_handle(acpi_handle handle, const char *method,
 405                             acpi_handle *ret)
 406{
 407        acpi_status status;
 408
 409        if (method == NULL)
 410                return -ENODEV;
 411
 412        if (ret)
 413                status = acpi_get_handle(handle, (char *)method,
 414                                         ret);
 415        else {
 416                acpi_handle dummy;
 417
 418                status = acpi_get_handle(handle, (char *)method,
 419                                         &dummy);
 420        }
 421
 422        if (status != AE_OK) {
 423                if (ret)
 424                        pr_warn("Error finding %s\n", method);
 425                return -ENODEV;
 426        }
 427        return 0;
 428}
 429
 430static bool asus_check_pega_lucid(struct asus_laptop *asus)
 431{
 432        return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
 433           !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
 434           !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
 435           !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
 436}
 437
 438static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
 439{
 440        char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
 441        return write_acpi_int(asus->handle, method, unit);
 442}
 443
 444static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
 445{
 446        int i, delta;
 447        unsigned long long val;
 448        for (i = 0; i < PEGA_ACC_RETRIES; i++) {
 449                acpi_evaluate_integer(asus->handle, method, NULL, &val);
 450
 451                /* The output is noisy.  From reading the ASL
 452                 * dissassembly, timeout errors are returned with 1's
 453                 * in the high word, and the lack of locking around
 454                 * thei hi/lo byte reads means that a transition
 455                 * between (for example) -1 and 0 could be read as
 456                 * 0xff00 or 0x00ff. */
 457                delta = abs(curr - (short)val);
 458                if (delta < 128 && !(val & ~0xffff))
 459                        break;
 460        }
 461        return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
 462}
 463
 464static void pega_accel_poll(struct input_polled_dev *ipd)
 465{
 466        struct device *parent = ipd->input->dev.parent;
 467        struct asus_laptop *asus = dev_get_drvdata(parent);
 468
 469        /* In some cases, the very first call to poll causes a
 470         * recursive fault under the polldev worker.  This is
 471         * apparently related to very early userspace access to the
 472         * device, and perhaps a firmware bug. Fake the first report. */
 473        if (!asus->pega_acc_live) {
 474                asus->pega_acc_live = true;
 475                input_report_abs(ipd->input, ABS_X, 0);
 476                input_report_abs(ipd->input, ABS_Y, 0);
 477                input_report_abs(ipd->input, ABS_Z, 0);
 478                input_sync(ipd->input);
 479                return;
 480        }
 481
 482        asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
 483        asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
 484        asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
 485
 486        /* Note transform, convert to "right/up/out" in the native
 487         * landscape orientation (i.e. the vector is the direction of
 488         * "real up" in the device's cartiesian coordinates). */
 489        input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
 490        input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
 491        input_report_abs(ipd->input, ABS_Z,  asus->pega_acc_z);
 492        input_sync(ipd->input);
 493}
 494
 495static void pega_accel_exit(struct asus_laptop *asus)
 496{
 497        if (asus->pega_accel_poll) {
 498                input_unregister_polled_device(asus->pega_accel_poll);
 499                input_free_polled_device(asus->pega_accel_poll);
 500        }
 501        asus->pega_accel_poll = NULL;
 502}
 503
 504static int pega_accel_init(struct asus_laptop *asus)
 505{
 506        int err;
 507        struct input_polled_dev *ipd;
 508
 509        if (!asus->is_pega_lucid)
 510                return -ENODEV;
 511
 512        if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
 513            acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
 514            acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
 515                return -ENODEV;
 516
 517        ipd = input_allocate_polled_device();
 518        if (!ipd)
 519                return -ENOMEM;
 520
 521        ipd->poll = pega_accel_poll;
 522        ipd->poll_interval = 125;
 523        ipd->poll_interval_min = 50;
 524        ipd->poll_interval_max = 2000;
 525
 526        ipd->input->name = PEGA_ACCEL_DESC;
 527        ipd->input->phys = PEGA_ACCEL_NAME "/input0";
 528        ipd->input->dev.parent = &asus->platform_device->dev;
 529        ipd->input->id.bustype = BUS_HOST;
 530
 531        set_bit(EV_ABS, ipd->input->evbit);
 532        input_set_abs_params(ipd->input, ABS_X,
 533                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 534        input_set_abs_params(ipd->input, ABS_Y,
 535                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 536        input_set_abs_params(ipd->input, ABS_Z,
 537                             -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 538
 539        err = input_register_polled_device(ipd);
 540        if (err)
 541                goto exit;
 542
 543        asus->pega_accel_poll = ipd;
 544        return 0;
 545
 546exit:
 547        input_free_polled_device(ipd);
 548        return err;
 549}
 550
 551/* Generic LED function */
 552static int asus_led_set(struct asus_laptop *asus, const char *method,
 553                         int value)
 554{
 555        if (!strcmp(method, METHOD_MLED))
 556                value = !value;
 557        else if (!strcmp(method, METHOD_GLED))
 558                value = !value + 1;
 559        else
 560                value = !!value;
 561
 562        return write_acpi_int(asus->handle, method, value);
 563}
 564
 565/*
 566 * LEDs
 567 */
 568/* /sys/class/led handlers */
 569static void asus_led_cdev_set(struct led_classdev *led_cdev,
 570                         enum led_brightness value)
 571{
 572        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 573        struct asus_laptop *asus = led->asus;
 574
 575        led->wk = !!value;
 576        queue_work(asus->led_workqueue, &led->work);
 577}
 578
 579static void asus_led_cdev_update(struct work_struct *work)
 580{
 581        struct asus_led *led = container_of(work, struct asus_led, work);
 582        struct asus_laptop *asus = led->asus;
 583
 584        asus_led_set(asus, led->method, led->wk);
 585}
 586
 587static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
 588{
 589        return led_cdev->brightness;
 590}
 591
 592/*
 593 * Keyboard backlight (also a LED)
 594 */
 595static int asus_kled_lvl(struct asus_laptop *asus)
 596{
 597        unsigned long long kblv;
 598        struct acpi_object_list params;
 599        union acpi_object in_obj;
 600        acpi_status rv;
 601
 602        params.count = 1;
 603        params.pointer = &in_obj;
 604        in_obj.type = ACPI_TYPE_INTEGER;
 605        in_obj.integer.value = 2;
 606
 607        rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
 608                                   &params, &kblv);
 609        if (ACPI_FAILURE(rv)) {
 610                pr_warn("Error reading kled level\n");
 611                return -ENODEV;
 612        }
 613        return kblv;
 614}
 615
 616static int asus_kled_set(struct asus_laptop *asus, int kblv)
 617{
 618        if (kblv > 0)
 619                kblv = (1 << 7) | (kblv & 0x7F);
 620        else
 621                kblv = 0;
 622
 623        if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
 624                pr_warn("Keyboard LED display write failed\n");
 625                return -EINVAL;
 626        }
 627        return 0;
 628}
 629
 630static void asus_kled_cdev_set(struct led_classdev *led_cdev,
 631                              enum led_brightness value)
 632{
 633        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 634        struct asus_laptop *asus = led->asus;
 635
 636        led->wk = value;
 637        queue_work(asus->led_workqueue, &led->work);
 638}
 639
 640static void asus_kled_cdev_update(struct work_struct *work)
 641{
 642        struct asus_led *led = container_of(work, struct asus_led, work);
 643        struct asus_laptop *asus = led->asus;
 644
 645        asus_kled_set(asus, led->wk);
 646}
 647
 648static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
 649{
 650        struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 651        struct asus_laptop *asus = led->asus;
 652
 653        return asus_kled_lvl(asus);
 654}
 655
 656static void asus_led_exit(struct asus_laptop *asus)
 657{
 658        if (!IS_ERR_OR_NULL(asus->wled.led.dev))
 659                led_classdev_unregister(&asus->wled.led);
 660        if (!IS_ERR_OR_NULL(asus->bled.led.dev))
 661                led_classdev_unregister(&asus->bled.led);
 662        if (!IS_ERR_OR_NULL(asus->mled.led.dev))
 663                led_classdev_unregister(&asus->mled.led);
 664        if (!IS_ERR_OR_NULL(asus->tled.led.dev))
 665                led_classdev_unregister(&asus->tled.led);
 666        if (!IS_ERR_OR_NULL(asus->pled.led.dev))
 667                led_classdev_unregister(&asus->pled.led);
 668        if (!IS_ERR_OR_NULL(asus->rled.led.dev))
 669                led_classdev_unregister(&asus->rled.led);
 670        if (!IS_ERR_OR_NULL(asus->gled.led.dev))
 671                led_classdev_unregister(&asus->gled.led);
 672        if (!IS_ERR_OR_NULL(asus->kled.led.dev))
 673                led_classdev_unregister(&asus->kled.led);
 674        if (asus->led_workqueue) {
 675                destroy_workqueue(asus->led_workqueue);
 676                asus->led_workqueue = NULL;
 677        }
 678}
 679
 680/*  Ugly macro, need to fix that later */
 681static int asus_led_register(struct asus_laptop *asus,
 682                             struct asus_led *led,
 683                             const char *name, const char *method)
 684{
 685        struct led_classdev *led_cdev = &led->led;
 686
 687        if (!method || acpi_check_handle(asus->handle, method, NULL))
 688                return 0; /* Led not present */
 689
 690        led->asus = asus;
 691        led->method = method;
 692
 693        INIT_WORK(&led->work, asus_led_cdev_update);
 694        led_cdev->name = name;
 695        led_cdev->brightness_set = asus_led_cdev_set;
 696        led_cdev->brightness_get = asus_led_cdev_get;
 697        led_cdev->max_brightness = 1;
 698        return led_classdev_register(&asus->platform_device->dev, led_cdev);
 699}
 700
 701static int asus_led_init(struct asus_laptop *asus)
 702{
 703        int r = 0;
 704
 705        /*
 706         * The Pegatron Lucid has no physical leds, but all methods are
 707         * available in the DSDT...
 708         */
 709        if (asus->is_pega_lucid)
 710                return 0;
 711
 712        /*
 713         * Functions that actually update the LED's are called from a
 714         * workqueue. By doing this as separate work rather than when the LED
 715         * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 716         * potentially bad time, such as a timer interrupt.
 717         */
 718        asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 719        if (!asus->led_workqueue)
 720                return -ENOMEM;
 721
 722        if (asus->wled_type == TYPE_LED)
 723                r = asus_led_register(asus, &asus->wled, "asus::wlan",
 724                                      METHOD_WLAN);
 725        if (r)
 726                goto error;
 727        if (asus->bled_type == TYPE_LED)
 728                r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
 729                                      METHOD_BLUETOOTH);
 730        if (r)
 731                goto error;
 732        r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
 733        if (r)
 734                goto error;
 735        r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
 736        if (r)
 737                goto error;
 738        r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
 739        if (r)
 740                goto error;
 741        r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
 742        if (r)
 743                goto error;
 744        r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
 745        if (r)
 746                goto error;
 747        if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
 748            !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
 749                struct asus_led *led = &asus->kled;
 750                struct led_classdev *cdev = &led->led;
 751
 752                led->asus = asus;
 753
 754                INIT_WORK(&led->work, asus_kled_cdev_update);
 755                cdev->name = "asus::kbd_backlight";
 756                cdev->brightness_set = asus_kled_cdev_set;
 757                cdev->brightness_get = asus_kled_cdev_get;
 758                cdev->max_brightness = 3;
 759                r = led_classdev_register(&asus->platform_device->dev, cdev);
 760        }
 761error:
 762        if (r)
 763                asus_led_exit(asus);
 764        return r;
 765}
 766
 767/*
 768 * Backlight device
 769 */
 770static int asus_read_brightness(struct backlight_device *bd)
 771{
 772        struct asus_laptop *asus = bl_get_data(bd);
 773        unsigned long long value;
 774        acpi_status rv;
 775
 776        rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
 777                                   NULL, &value);
 778        if (ACPI_FAILURE(rv)) {
 779                pr_warn("Error reading brightness\n");
 780                return 0;
 781        }
 782
 783        return value;
 784}
 785
 786static int asus_set_brightness(struct backlight_device *bd, int value)
 787{
 788        struct asus_laptop *asus = bl_get_data(bd);
 789
 790        if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
 791                pr_warn("Error changing brightness\n");
 792                return -EIO;
 793        }
 794        return 0;
 795}
 796
 797static int update_bl_status(struct backlight_device *bd)
 798{
 799        int value = bd->props.brightness;
 800
 801        return asus_set_brightness(bd, value);
 802}
 803
 804static const struct backlight_ops asusbl_ops = {
 805        .get_brightness = asus_read_brightness,
 806        .update_status = update_bl_status,
 807};
 808
 809static int asus_backlight_notify(struct asus_laptop *asus)
 810{
 811        struct backlight_device *bd = asus->backlight_device;
 812        int old = bd->props.brightness;
 813
 814        backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
 815
 816        return old;
 817}
 818
 819static int asus_backlight_init(struct asus_laptop *asus)
 820{
 821        struct backlight_device *bd;
 822        struct backlight_properties props;
 823
 824        if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
 825            acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
 826                return 0;
 827
 828        memset(&props, 0, sizeof(struct backlight_properties));
 829        props.max_brightness = 15;
 830        props.type = BACKLIGHT_PLATFORM;
 831
 832        bd = backlight_device_register(ASUS_LAPTOP_FILE,
 833                                       &asus->platform_device->dev, asus,
 834                                       &asusbl_ops, &props);
 835        if (IS_ERR(bd)) {
 836                pr_err("Could not register asus backlight device\n");
 837                asus->backlight_device = NULL;
 838                return PTR_ERR(bd);
 839        }
 840
 841        asus->backlight_device = bd;
 842        bd->props.brightness = asus_read_brightness(bd);
 843        bd->props.power = FB_BLANK_UNBLANK;
 844        backlight_update_status(bd);
 845        return 0;
 846}
 847
 848static void asus_backlight_exit(struct asus_laptop *asus)
 849{
 850        backlight_device_unregister(asus->backlight_device);
 851        asus->backlight_device = NULL;
 852}
 853
 854/*
 855 * Platform device handlers
 856 */
 857
 858/*
 859 * We write our info in page, we begin at offset off and cannot write more
 860 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
 861 * number of bytes written in page
 862 */
 863static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
 864                          char *page)
 865{
 866        struct asus_laptop *asus = dev_get_drvdata(dev);
 867        int len = 0;
 868        unsigned long long temp;
 869        char buf[16];           /* enough for all info */
 870        acpi_status rv;
 871
 872        /*
 873         * We use the easy way, we don't care of off and count,
 874         * so we don't set eof to 1
 875         */
 876
 877        len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
 878        len += sprintf(page + len, "Model reference    : %s\n", asus->name);
 879        /*
 880         * The SFUN method probably allows the original driver to get the list
 881         * of features supported by a given model. For now, 0x0100 or 0x0800
 882         * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
 883         * The significance of others is yet to be found.
 884         */
 885        rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
 886        if (!ACPI_FAILURE(rv))
 887                len += sprintf(page + len, "SFUN value         : %#x\n",
 888                               (uint) temp);
 889        /*
 890         * The HWRS method return informations about the hardware.
 891         * 0x80 bit is for WLAN, 0x100 for Bluetooth.
 892         * 0x40 for WWAN, 0x10 for WIMAX.
 893         * The significance of others is yet to be found.
 894         * We don't currently use this for device detection, and it
 895         * takes several seconds to run on some systems.
 896         */
 897        rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
 898        if (!ACPI_FAILURE(rv))
 899                len += sprintf(page + len, "HWRS value         : %#x\n",
 900                               (uint) temp);
 901        /*
 902         * Another value for userspace: the ASYM method returns 0x02 for
 903         * battery low and 0x04 for battery critical, its readings tend to be
 904         * more accurate than those provided by _BST.
 905         * Note: since not all the laptops provide this method, errors are
 906         * silently ignored.
 907         */
 908        rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
 909        if (!ACPI_FAILURE(rv))
 910                len += sprintf(page + len, "ASYM value         : %#x\n",
 911                               (uint) temp);
 912        if (asus->dsdt_info) {
 913                snprintf(buf, 16, "%d", asus->dsdt_info->length);
 914                len += sprintf(page + len, "DSDT length        : %s\n", buf);
 915                snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
 916                len += sprintf(page + len, "DSDT checksum      : %s\n", buf);
 917                snprintf(buf, 16, "%d", asus->dsdt_info->revision);
 918                len += sprintf(page + len, "DSDT revision      : %s\n", buf);
 919                snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
 920                len += sprintf(page + len, "OEM id             : %s\n", buf);
 921                snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
 922                len += sprintf(page + len, "OEM table id       : %s\n", buf);
 923                snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
 924                len += sprintf(page + len, "OEM revision       : 0x%s\n", buf);
 925                snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
 926                len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
 927                snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
 928                len += sprintf(page + len, "ASL comp revision  : 0x%s\n", buf);
 929        }
 930
 931        return len;
 932}
 933static DEVICE_ATTR_RO(infos);
 934
 935static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
 936                              const char *buf, size_t count,
 937                              const char *method)
 938{
 939        int rv, value;
 940
 941        rv = kstrtoint(buf, 0, &value);
 942        if (rv < 0)
 943                return rv;
 944
 945        if (write_acpi_int(asus->handle, method, value))
 946                return -ENODEV;
 947        return count;
 948}
 949
 950/*
 951 * LEDD display
 952 */
 953static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
 954                         char *buf)
 955{
 956        struct asus_laptop *asus = dev_get_drvdata(dev);
 957
 958        return sprintf(buf, "0x%08x\n", asus->ledd_status);
 959}
 960
 961static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
 962                          const char *buf, size_t count)
 963{
 964        struct asus_laptop *asus = dev_get_drvdata(dev);
 965        int rv, value;
 966
 967        rv = kstrtoint(buf, 0, &value);
 968        if (rv < 0)
 969                return rv;
 970
 971        if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
 972                pr_warn("LED display write failed\n");
 973                return -ENODEV;
 974        }
 975
 976        asus->ledd_status = (u32) value;
 977        return count;
 978}
 979static DEVICE_ATTR_RW(ledd);
 980
 981/*
 982 * Wireless
 983 */
 984static int asus_wireless_status(struct asus_laptop *asus, int mask)
 985{
 986        unsigned long long status;
 987        acpi_status rv = AE_OK;
 988
 989        if (!asus->have_rsts)
 990                return (asus->wireless_status & mask) ? 1 : 0;
 991
 992        rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
 993                                   NULL, &status);
 994        if (ACPI_FAILURE(rv)) {
 995                pr_warn("Error reading Wireless status\n");
 996                return -EINVAL;
 997        }
 998        return !!(status & mask);
 999}
1000
1001/*
1002 * WLAN
1003 */
1004static int asus_wlan_set(struct asus_laptop *asus, int status)
1005{
1006        if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
1007                pr_warn("Error setting wlan status to %d\n", status);
1008                return -EIO;
1009        }
1010        return 0;
1011}
1012
1013static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
1014                         char *buf)
1015{
1016        struct asus_laptop *asus = dev_get_drvdata(dev);
1017
1018        return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1019}
1020
1021static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
1022                          const char *buf, size_t count)
1023{
1024        struct asus_laptop *asus = dev_get_drvdata(dev);
1025
1026        return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1027}
1028static DEVICE_ATTR_RW(wlan);
1029
1030/*e
1031 * Bluetooth
1032 */
1033static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1034{
1035        if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1036                pr_warn("Error setting bluetooth status to %d\n", status);
1037                return -EIO;
1038        }
1039        return 0;
1040}
1041
1042static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
1043                              char *buf)
1044{
1045        struct asus_laptop *asus = dev_get_drvdata(dev);
1046
1047        return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1048}
1049
1050static ssize_t bluetooth_store(struct device *dev,
1051                               struct device_attribute *attr, const char *buf,
1052                               size_t count)
1053{
1054        struct asus_laptop *asus = dev_get_drvdata(dev);
1055
1056        return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1057}
1058static DEVICE_ATTR_RW(bluetooth);
1059
1060/*
1061 * Wimax
1062 */
1063static int asus_wimax_set(struct asus_laptop *asus, int status)
1064{
1065        if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1066                pr_warn("Error setting wimax status to %d\n", status);
1067                return -EIO;
1068        }
1069        return 0;
1070}
1071
1072static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
1073                          char *buf)
1074{
1075        struct asus_laptop *asus = dev_get_drvdata(dev);
1076
1077        return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1078}
1079
1080static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
1081                           const char *buf, size_t count)
1082{
1083        struct asus_laptop *asus = dev_get_drvdata(dev);
1084
1085        return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1086}
1087static DEVICE_ATTR_RW(wimax);
1088
1089/*
1090 * Wwan
1091 */
1092static int asus_wwan_set(struct asus_laptop *asus, int status)
1093{
1094        if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1095                pr_warn("Error setting wwan status to %d\n", status);
1096                return -EIO;
1097        }
1098        return 0;
1099}
1100
1101static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
1102                         char *buf)
1103{
1104        struct asus_laptop *asus = dev_get_drvdata(dev);
1105
1106        return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1107}
1108
1109static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
1110                          const char *buf, size_t count)
1111{
1112        struct asus_laptop *asus = dev_get_drvdata(dev);
1113
1114        return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1115}
1116static DEVICE_ATTR_RW(wwan);
1117
1118/*
1119 * Display
1120 */
1121static void asus_set_display(struct asus_laptop *asus, int value)
1122{
1123        /* no sanity check needed for now */
1124        if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1125                pr_warn("Error setting display\n");
1126        return;
1127}
1128
1129/*
1130 * Experimental support for display switching. As of now: 1 should activate
1131 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1132 * Any combination (bitwise) of these will suffice. I never actually tested 4
1133 * displays hooked up simultaneously, so be warned. See the acpi4asus README
1134 * for more info.
1135 */
1136static ssize_t display_store(struct device *dev, struct device_attribute *attr,
1137                             const char *buf, size_t count)
1138{
1139        struct asus_laptop *asus = dev_get_drvdata(dev);
1140        int rv, value;
1141
1142        rv = kstrtoint(buf, 0, &value);
1143        if (rv < 0)
1144                return rv;
1145
1146        asus_set_display(asus, value);
1147        return count;
1148}
1149static DEVICE_ATTR_WO(display);
1150
1151/*
1152 * Light Sens
1153 */
1154static void asus_als_switch(struct asus_laptop *asus, int value)
1155{
1156        int ret;
1157
1158        if (asus->is_pega_lucid) {
1159                ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1160                if (!ret)
1161                        ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1162        } else {
1163                ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1164        }
1165        if (ret)
1166                pr_warning("Error setting light sensor switch\n");
1167
1168        asus->light_switch = value;
1169}
1170
1171static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
1172                              char *buf)
1173{
1174        struct asus_laptop *asus = dev_get_drvdata(dev);
1175
1176        return sprintf(buf, "%d\n", asus->light_switch);
1177}
1178
1179static ssize_t ls_switch_store(struct device *dev,
1180                               struct device_attribute *attr, const char *buf,
1181                               size_t count)
1182{
1183        struct asus_laptop *asus = dev_get_drvdata(dev);
1184        int rv, value;
1185
1186        rv = kstrtoint(buf, 0, &value);
1187        if (rv < 0)
1188                return rv;
1189
1190        asus_als_switch(asus, value ? 1 : 0);
1191        return count;
1192}
1193static DEVICE_ATTR_RW(ls_switch);
1194
1195static void asus_als_level(struct asus_laptop *asus, int value)
1196{
1197        if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1198                pr_warn("Error setting light sensor level\n");
1199        asus->light_level = value;
1200}
1201
1202static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
1203                             char *buf)
1204{
1205        struct asus_laptop *asus = dev_get_drvdata(dev);
1206
1207        return sprintf(buf, "%d\n", asus->light_level);
1208}
1209
1210static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
1211                              const char *buf, size_t count)
1212{
1213        struct asus_laptop *asus = dev_get_drvdata(dev);
1214        int rv, value;
1215
1216        rv = kstrtoint(buf, 0, &value);
1217        if (rv < 0)
1218                return rv;
1219
1220        value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1221        /* 0 <= value <= 15 */
1222        asus_als_level(asus, value);
1223
1224        return count;
1225}
1226static DEVICE_ATTR_RW(ls_level);
1227
1228static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1229{
1230        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1231        int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1232                                     &buffer);
1233        if (!err) {
1234                union acpi_object *obj = buffer.pointer;
1235                if (obj && obj->type == ACPI_TYPE_INTEGER)
1236                        *result = obj->integer.value;
1237                else
1238                        err = -EIO;
1239        }
1240        return err;
1241}
1242
1243static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
1244                             char *buf)
1245{
1246        struct asus_laptop *asus = dev_get_drvdata(dev);
1247        int err, hi, lo;
1248
1249        err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1250        if (!err)
1251                err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1252        if (!err)
1253                return sprintf(buf, "%d\n", 10 * hi + lo);
1254        return err;
1255}
1256static DEVICE_ATTR_RO(ls_value);
1257
1258/*
1259 * GPS
1260 */
1261static int asus_gps_status(struct asus_laptop *asus)
1262{
1263        unsigned long long status;
1264        acpi_status rv;
1265
1266        rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1267                                   NULL, &status);
1268        if (ACPI_FAILURE(rv)) {
1269                pr_warn("Error reading GPS status\n");
1270                return -ENODEV;
1271        }
1272        return !!status;
1273}
1274
1275static int asus_gps_switch(struct asus_laptop *asus, int status)
1276{
1277        const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1278
1279        if (write_acpi_int(asus->handle, meth, 0x02))
1280                return -ENODEV;
1281        return 0;
1282}
1283
1284static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
1285                        char *buf)
1286{
1287        struct asus_laptop *asus = dev_get_drvdata(dev);
1288
1289        return sprintf(buf, "%d\n", asus_gps_status(asus));
1290}
1291
1292static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
1293                         const char *buf, size_t count)
1294{
1295        struct asus_laptop *asus = dev_get_drvdata(dev);
1296        int rv, value;
1297        int ret;
1298
1299        rv = kstrtoint(buf, 0, &value);
1300        if (rv < 0)
1301                return rv;
1302        ret = asus_gps_switch(asus, !!value);
1303        if (ret)
1304                return ret;
1305        rfkill_set_sw_state(asus->gps.rfkill, !value);
1306        return count;
1307}
1308static DEVICE_ATTR_RW(gps);
1309
1310/*
1311 * rfkill
1312 */
1313static int asus_gps_rfkill_set(void *data, bool blocked)
1314{
1315        struct asus_laptop *asus = data;
1316
1317        return asus_gps_switch(asus, !blocked);
1318}
1319
1320static const struct rfkill_ops asus_gps_rfkill_ops = {
1321        .set_block = asus_gps_rfkill_set,
1322};
1323
1324static int asus_rfkill_set(void *data, bool blocked)
1325{
1326        struct asus_rfkill *rfk = data;
1327        struct asus_laptop *asus = rfk->asus;
1328
1329        if (rfk->control_id == WL_RSTS)
1330                return asus_wlan_set(asus, !blocked);
1331        else if (rfk->control_id == BT_RSTS)
1332                return asus_bluetooth_set(asus, !blocked);
1333        else if (rfk->control_id == WM_RSTS)
1334                return asus_wimax_set(asus, !blocked);
1335        else if (rfk->control_id == WW_RSTS)
1336                return asus_wwan_set(asus, !blocked);
1337
1338        return -EINVAL;
1339}
1340
1341static const struct rfkill_ops asus_rfkill_ops = {
1342        .set_block = asus_rfkill_set,
1343};
1344
1345static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1346{
1347        if (!rfk->rfkill)
1348                return ;
1349
1350        rfkill_unregister(rfk->rfkill);
1351        rfkill_destroy(rfk->rfkill);
1352        rfk->rfkill = NULL;
1353}
1354
1355static void asus_rfkill_exit(struct asus_laptop *asus)
1356{
1357        asus_rfkill_terminate(&asus->wwan);
1358        asus_rfkill_terminate(&asus->bluetooth);
1359        asus_rfkill_terminate(&asus->wlan);
1360        asus_rfkill_terminate(&asus->gps);
1361}
1362
1363static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1364                             const char *name, int control_id, int type,
1365                             const struct rfkill_ops *ops)
1366{
1367        int result;
1368
1369        rfk->control_id = control_id;
1370        rfk->asus = asus;
1371        rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1372                                   type, ops, rfk);
1373        if (!rfk->rfkill)
1374                return -EINVAL;
1375
1376        result = rfkill_register(rfk->rfkill);
1377        if (result) {
1378                rfkill_destroy(rfk->rfkill);
1379                rfk->rfkill = NULL;
1380        }
1381
1382        return result;
1383}
1384
1385static int asus_rfkill_init(struct asus_laptop *asus)
1386{
1387        int result = 0;
1388
1389        if (asus->is_pega_lucid)
1390                return -ENODEV;
1391
1392        if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1393            !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1394            !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1395                result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1396                                           -1, RFKILL_TYPE_GPS,
1397                                           &asus_gps_rfkill_ops);
1398        if (result)
1399                goto exit;
1400
1401
1402        if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1403            asus->wled_type == TYPE_RFKILL)
1404                result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1405                                           WL_RSTS, RFKILL_TYPE_WLAN,
1406                                           &asus_rfkill_ops);
1407        if (result)
1408                goto exit;
1409
1410        if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1411            asus->bled_type == TYPE_RFKILL)
1412                result = asus_rfkill_setup(asus, &asus->bluetooth,
1413                                           "asus-bluetooth", BT_RSTS,
1414                                           RFKILL_TYPE_BLUETOOTH,
1415                                           &asus_rfkill_ops);
1416        if (result)
1417                goto exit;
1418
1419        if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1420                result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1421                                           WW_RSTS, RFKILL_TYPE_WWAN,
1422                                           &asus_rfkill_ops);
1423        if (result)
1424                goto exit;
1425
1426        if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1427                result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1428                                           WM_RSTS, RFKILL_TYPE_WIMAX,
1429                                           &asus_rfkill_ops);
1430        if (result)
1431                goto exit;
1432
1433exit:
1434        if (result)
1435                asus_rfkill_exit(asus);
1436
1437        return result;
1438}
1439
1440static int pega_rfkill_set(void *data, bool blocked)
1441{
1442        struct asus_rfkill *rfk = data;
1443
1444        int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1445        return ret;
1446}
1447
1448static const struct rfkill_ops pega_rfkill_ops = {
1449        .set_block = pega_rfkill_set,
1450};
1451
1452static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1453                             const char *name, int controlid, int rfkill_type)
1454{
1455        return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1456                                 &pega_rfkill_ops);
1457}
1458
1459static int pega_rfkill_init(struct asus_laptop *asus)
1460{
1461        int ret = 0;
1462
1463        if(!asus->is_pega_lucid)
1464                return -ENODEV;
1465
1466        ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1467                                PEGA_WLAN, RFKILL_TYPE_WLAN);
1468        if(ret)
1469                goto exit;
1470
1471        ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1472                                PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1473        if(ret)
1474                goto exit;
1475
1476        ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1477                                PEGA_WWAN, RFKILL_TYPE_WWAN);
1478
1479exit:
1480        if (ret)
1481                asus_rfkill_exit(asus);
1482
1483        return ret;
1484}
1485
1486/*
1487 * Input device (i.e. hotkeys)
1488 */
1489static void asus_input_notify(struct asus_laptop *asus, int event)
1490{
1491        if (!asus->inputdev)
1492                return ;
1493        if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1494                pr_info("Unknown key %x pressed\n", event);
1495}
1496
1497static int asus_input_init(struct asus_laptop *asus)
1498{
1499        struct input_dev *input;
1500        int error;
1501
1502        input = input_allocate_device();
1503        if (!input)
1504                return -ENOMEM;
1505
1506        input->name = "Asus Laptop extra buttons";
1507        input->phys = ASUS_LAPTOP_FILE "/input0";
1508        input->id.bustype = BUS_HOST;
1509        input->dev.parent = &asus->platform_device->dev;
1510
1511        error = sparse_keymap_setup(input, asus_keymap, NULL);
1512        if (error) {
1513                pr_err("Unable to setup input device keymap\n");
1514                goto err_free_dev;
1515        }
1516        error = input_register_device(input);
1517        if (error) {
1518                pr_warn("Unable to register input device\n");
1519                goto err_free_dev;
1520        }
1521
1522        asus->inputdev = input;
1523        return 0;
1524
1525err_free_dev:
1526        input_free_device(input);
1527        return error;
1528}
1529
1530static void asus_input_exit(struct asus_laptop *asus)
1531{
1532        if (asus->inputdev)
1533                input_unregister_device(asus->inputdev);
1534        asus->inputdev = NULL;
1535}
1536
1537/*
1538 * ACPI driver
1539 */
1540static void asus_acpi_notify(struct acpi_device *device, u32 event)
1541{
1542        struct asus_laptop *asus = acpi_driver_data(device);
1543        u16 count;
1544
1545        /* TODO Find a better way to handle events count. */
1546        count = asus->event_count[event % 128]++;
1547        acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1548                                        dev_name(&asus->device->dev), event,
1549                                        count);
1550
1551        if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1552                event = ATKD_BRNUP;
1553        else if (event >= ATKD_BRNDOWN_MIN &&
1554                 event <= ATKD_BRNDOWN_MAX)
1555                event = ATKD_BRNDOWN;
1556
1557        /* Brightness events are special */
1558        if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1559                if (asus->backlight_device != NULL) {
1560                        /* Update the backlight device. */
1561                        asus_backlight_notify(asus);
1562                        return ;
1563                }
1564        }
1565
1566        /* Accelerometer "coarse orientation change" event */
1567        if (asus->pega_accel_poll && event == 0xEA) {
1568                kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1569                               KOBJ_CHANGE);
1570                return ;
1571        }
1572
1573        asus_input_notify(asus, event);
1574}
1575
1576static struct attribute *asus_attributes[] = {
1577        &dev_attr_infos.attr,
1578        &dev_attr_wlan.attr,
1579        &dev_attr_bluetooth.attr,
1580        &dev_attr_wimax.attr,
1581        &dev_attr_wwan.attr,
1582        &dev_attr_display.attr,
1583        &dev_attr_ledd.attr,
1584        &dev_attr_ls_value.attr,
1585        &dev_attr_ls_level.attr,
1586        &dev_attr_ls_switch.attr,
1587        &dev_attr_gps.attr,
1588        NULL
1589};
1590
1591static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1592                                    struct attribute *attr,
1593                                    int idx)
1594{
1595        struct device *dev = container_of(kobj, struct device, kobj);
1596        struct asus_laptop *asus = dev_get_drvdata(dev);
1597        acpi_handle handle = asus->handle;
1598        bool supported;
1599
1600        if (asus->is_pega_lucid) {
1601                /* no ls_level interface on the Lucid */
1602                if (attr == &dev_attr_ls_switch.attr)
1603                        supported = true;
1604                else if (attr == &dev_attr_ls_level.attr)
1605                        supported = false;
1606                else
1607                        goto normal;
1608
1609                return supported ? attr->mode : 0;
1610        }
1611
1612normal:
1613        if (attr == &dev_attr_wlan.attr) {
1614                supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1615
1616        } else if (attr == &dev_attr_bluetooth.attr) {
1617                supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1618
1619        } else if (attr == &dev_attr_display.attr) {
1620                supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1621
1622        } else if (attr == &dev_attr_wimax.attr) {
1623                supported =
1624                        !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1625
1626        } else if (attr == &dev_attr_wwan.attr) {
1627                supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1628
1629        } else if (attr == &dev_attr_ledd.attr) {
1630                supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1631
1632        } else if (attr == &dev_attr_ls_switch.attr ||
1633                   attr == &dev_attr_ls_level.attr) {
1634                supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1635                        !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1636        } else if (attr == &dev_attr_ls_value.attr) {
1637                supported = asus->is_pega_lucid;
1638        } else if (attr == &dev_attr_gps.attr) {
1639                supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1640                            !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1641                            !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1642        } else {
1643                supported = true;
1644        }
1645
1646        return supported ? attr->mode : 0;
1647}
1648
1649
1650static const struct attribute_group asus_attr_group = {
1651        .is_visible     = asus_sysfs_is_visible,
1652        .attrs          = asus_attributes,
1653};
1654
1655static int asus_platform_init(struct asus_laptop *asus)
1656{
1657        int result;
1658
1659        asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1660        if (!asus->platform_device)
1661                return -ENOMEM;
1662        platform_set_drvdata(asus->platform_device, asus);
1663
1664        result = platform_device_add(asus->platform_device);
1665        if (result)
1666                goto fail_platform_device;
1667
1668        result = sysfs_create_group(&asus->platform_device->dev.kobj,
1669                                    &asus_attr_group);
1670        if (result)
1671                goto fail_sysfs;
1672
1673        return 0;
1674
1675fail_sysfs:
1676        platform_device_del(asus->platform_device);
1677fail_platform_device:
1678        platform_device_put(asus->platform_device);
1679        return result;
1680}
1681
1682static void asus_platform_exit(struct asus_laptop *asus)
1683{
1684        sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1685        platform_device_unregister(asus->platform_device);
1686}
1687
1688static struct platform_driver platform_driver = {
1689        .driver = {
1690                .name = ASUS_LAPTOP_FILE,
1691        },
1692};
1693
1694/*
1695 * This function is used to initialize the context with right values. In this
1696 * method, we can make all the detection we want, and modify the asus_laptop
1697 * struct
1698 */
1699static int asus_laptop_get_info(struct asus_laptop *asus)
1700{
1701        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1702        union acpi_object *model = NULL;
1703        unsigned long long bsts_result;
1704        char *string = NULL;
1705        acpi_status status;
1706
1707        /*
1708         * Get DSDT headers early enough to allow for differentiating between
1709         * models, but late enough to allow acpi_bus_register_driver() to fail
1710         * before doing anything ACPI-specific. Should we encounter a machine,
1711         * which needs special handling (i.e. its hotkey device has a different
1712         * HID), this bit will be moved.
1713         */
1714        status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1715        if (ACPI_FAILURE(status))
1716                pr_warn("Couldn't get the DSDT table header\n");
1717
1718        /* We have to write 0 on init this far for all ASUS models */
1719        if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1720                pr_err("Hotkey initialization failed\n");
1721                return -ENODEV;
1722        }
1723
1724        /* This needs to be called for some laptops to init properly */
1725        status =
1726            acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1727        if (ACPI_FAILURE(status))
1728                pr_warn("Error calling BSTS\n");
1729        else if (bsts_result)
1730                pr_notice("BSTS called, 0x%02x returned\n",
1731                       (uint) bsts_result);
1732
1733        /* This too ... */
1734        if (write_acpi_int(asus->handle, "CWAP", wapf))
1735                pr_err("Error calling CWAP(%d)\n", wapf);
1736        /*
1737         * Try to match the object returned by INIT to the specific model.
1738         * Handle every possible object (or the lack of thereof) the DSDT
1739         * writers might throw at us. When in trouble, we pass NULL to
1740         * asus_model_match() and try something completely different.
1741         */
1742        if (buffer.pointer) {
1743                model = buffer.pointer;
1744                switch (model->type) {
1745                case ACPI_TYPE_STRING:
1746                        string = model->string.pointer;
1747                        break;
1748                case ACPI_TYPE_BUFFER:
1749                        string = model->buffer.pointer;
1750                        break;
1751                default:
1752                        string = "";
1753                        break;
1754                }
1755        }
1756        asus->name = kstrdup(string, GFP_KERNEL);
1757        if (!asus->name) {
1758                kfree(buffer.pointer);
1759                return -ENOMEM;
1760        }
1761
1762        if (string)
1763                pr_notice("  %s model detected\n", string);
1764
1765        if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1766                asus->have_rsts = true;
1767
1768        kfree(model);
1769
1770        return AE_OK;
1771}
1772
1773static int asus_acpi_init(struct asus_laptop *asus)
1774{
1775        int result = 0;
1776
1777        result = acpi_bus_get_status(asus->device);
1778        if (result)
1779                return result;
1780        if (!asus->device->status.present) {
1781                pr_err("Hotkey device not present, aborting\n");
1782                return -ENODEV;
1783        }
1784
1785        result = asus_laptop_get_info(asus);
1786        if (result)
1787                return result;
1788
1789        if (!strcmp(bled_type, "led"))
1790                asus->bled_type = TYPE_LED;
1791        else if (!strcmp(bled_type, "rfkill"))
1792                asus->bled_type = TYPE_RFKILL;
1793
1794        if (!strcmp(wled_type, "led"))
1795                asus->wled_type = TYPE_LED;
1796        else if (!strcmp(wled_type, "rfkill"))
1797                asus->wled_type = TYPE_RFKILL;
1798
1799        if (bluetooth_status >= 0)
1800                asus_bluetooth_set(asus, !!bluetooth_status);
1801
1802        if (wlan_status >= 0)
1803                asus_wlan_set(asus, !!wlan_status);
1804
1805        if (wimax_status >= 0)
1806                asus_wimax_set(asus, !!wimax_status);
1807
1808        if (wwan_status >= 0)
1809                asus_wwan_set(asus, !!wwan_status);
1810
1811        /* Keyboard Backlight is on by default */
1812        if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1813                asus_kled_set(asus, 1);
1814
1815        /* LED display is off by default */
1816        asus->ledd_status = 0xFFF;
1817
1818        /* Set initial values of light sensor and level */
1819        asus->light_switch = !!als_status;
1820        asus->light_level = 5;  /* level 5 for sensor sensitivity */
1821
1822        if (asus->is_pega_lucid) {
1823                asus_als_switch(asus, asus->light_switch);
1824        } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1825                   !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1826                asus_als_switch(asus, asus->light_switch);
1827                asus_als_level(asus, asus->light_level);
1828        }
1829
1830        return result;
1831}
1832
1833static void asus_dmi_check(void)
1834{
1835        const char *model;
1836
1837        model = dmi_get_system_info(DMI_PRODUCT_NAME);
1838        if (!model)
1839                return;
1840
1841        /* On L1400B WLED control the sound card, don't mess with it ... */
1842        if (strncmp(model, "L1400B", 6) == 0) {
1843                wlan_status = -1;
1844        }
1845}
1846
1847static bool asus_device_present;
1848
1849static int asus_acpi_add(struct acpi_device *device)
1850{
1851        struct asus_laptop *asus;
1852        int result;
1853
1854        pr_notice("Asus Laptop Support version %s\n",
1855                  ASUS_LAPTOP_VERSION);
1856        asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1857        if (!asus)
1858                return -ENOMEM;
1859        asus->handle = device->handle;
1860        strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1861        strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1862        device->driver_data = asus;
1863        asus->device = device;
1864
1865        asus_dmi_check();
1866
1867        result = asus_acpi_init(asus);
1868        if (result)
1869                goto fail_platform;
1870
1871        /*
1872         * Need platform type detection first, then the platform
1873         * device.  It is used as a parent for the sub-devices below.
1874         */
1875        asus->is_pega_lucid = asus_check_pega_lucid(asus);
1876        result = asus_platform_init(asus);
1877        if (result)
1878                goto fail_platform;
1879
1880        if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1881                result = asus_backlight_init(asus);
1882                if (result)
1883                        goto fail_backlight;
1884        }
1885
1886        result = asus_input_init(asus);
1887        if (result)
1888                goto fail_input;
1889
1890        result = asus_led_init(asus);
1891        if (result)
1892                goto fail_led;
1893
1894        result = asus_rfkill_init(asus);
1895        if (result && result != -ENODEV)
1896                goto fail_rfkill;
1897
1898        result = pega_accel_init(asus);
1899        if (result && result != -ENODEV)
1900                goto fail_pega_accel;
1901
1902        result = pega_rfkill_init(asus);
1903        if (result && result != -ENODEV)
1904                goto fail_pega_rfkill;
1905
1906        asus_device_present = true;
1907        return 0;
1908
1909fail_pega_rfkill:
1910        pega_accel_exit(asus);
1911fail_pega_accel:
1912        asus_rfkill_exit(asus);
1913fail_rfkill:
1914        asus_led_exit(asus);
1915fail_led:
1916        asus_input_exit(asus);
1917fail_input:
1918        asus_backlight_exit(asus);
1919fail_backlight:
1920        asus_platform_exit(asus);
1921fail_platform:
1922        kfree(asus);
1923
1924        return result;
1925}
1926
1927static int asus_acpi_remove(struct acpi_device *device)
1928{
1929        struct asus_laptop *asus = acpi_driver_data(device);
1930
1931        asus_backlight_exit(asus);
1932        asus_rfkill_exit(asus);
1933        asus_led_exit(asus);
1934        asus_input_exit(asus);
1935        pega_accel_exit(asus);
1936        asus_platform_exit(asus);
1937
1938        kfree(asus->name);
1939        kfree(asus);
1940        return 0;
1941}
1942
1943static const struct acpi_device_id asus_device_ids[] = {
1944        {"ATK0100", 0},
1945        {"ATK0101", 0},
1946        {"", 0},
1947};
1948MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1949
1950static struct acpi_driver asus_acpi_driver = {
1951        .name = ASUS_LAPTOP_NAME,
1952        .class = ASUS_LAPTOP_CLASS,
1953        .owner = THIS_MODULE,
1954        .ids = asus_device_ids,
1955        .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1956        .ops = {
1957                .add = asus_acpi_add,
1958                .remove = asus_acpi_remove,
1959                .notify = asus_acpi_notify,
1960                },
1961};
1962
1963static int __init asus_laptop_init(void)
1964{
1965        int result;
1966
1967        result = platform_driver_register(&platform_driver);
1968        if (result < 0)
1969                return result;
1970
1971        result = acpi_bus_register_driver(&asus_acpi_driver);
1972        if (result < 0)
1973                goto fail_acpi_driver;
1974        if (!asus_device_present) {
1975                result = -ENODEV;
1976                goto fail_no_device;
1977        }
1978        return 0;
1979
1980fail_no_device:
1981        acpi_bus_unregister_driver(&asus_acpi_driver);
1982fail_acpi_driver:
1983        platform_driver_unregister(&platform_driver);
1984        return result;
1985}
1986
1987static void __exit asus_laptop_exit(void)
1988{
1989        acpi_bus_unregister_driver(&asus_acpi_driver);
1990        platform_driver_unregister(&platform_driver);
1991}
1992
1993module_init(asus_laptop_init);
1994module_exit(asus_laptop_exit);
1995