drivers/platform/x86/asus-laptop.c

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

DEFINITIONS
