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Linux/drivers/platform/x86/asus-laptop.c

  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 
 67 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
 68 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
 69 MODULE_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  */
 80 static uint wapf = 1;
 81 module_param(wapf, uint, 0444);
 82 MODULE_PARM_DESC(wapf, "WAPF value");
 83 
 84 static char *wled_type = "unknown";
 85 static char *bled_type = "unknown";
 86 
 87 module_param(wled_type, charp, 0444);
 88 MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
 89                  "(unknown, led or rfkill). "
 90                  "default is unknown");
 91 
 92 module_param(bled_type, charp, 0444);
 93 MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
 94                  "(unknown, led or rfkill). "
 95                  "default is unknown");
 96 
 97 static int wlan_status = 1;
 98 static int bluetooth_status = 1;
 99 static int wimax_status = -1;
100 static int wwan_status = -1;
101 static int als_status;
102 
103 module_param(wlan_status, int, 0444);
104 MODULE_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 
108 module_param(bluetooth_status, int, 0444);
109 MODULE_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 
113 module_param(wimax_status, int, 0444);
114 MODULE_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 
118 module_param(wwan_status, int, 0444);
119 MODULE_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 
123 module_param(als_status, int, 0444);
124 MODULE_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  */
230 struct 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  */
241 struct 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  */
252 struct 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 
297 static 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  */
377 static 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 
399 static 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 
404 static 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 
430 static 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 
438 static 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 
444 static 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 
464 static 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 
495 static 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 
504 static 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 
546 exit:
547         input_free_polled_device(ipd);
548         return err;
549 }
550 
551 /* Generic LED function */
552 static 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 */
569 static 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 
579 static 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 
587 static 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  */
595 static 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 
616 static 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 
630 static 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 
640 static 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 
648 static 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 
656 static 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 */
681 static 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 
701 static 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         }
761 error:
762         if (r)
763                 asus_led_exit(asus);
764         return r;
765 }
766 
767 /*
768  * Backlight device
769  */
770 static 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 
786 static 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 
797 static 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 
804 static const struct backlight_ops asusbl_ops = {
805         .get_brightness = asus_read_brightness,
806         .update_status = update_bl_status,
807 };
808 
809 static 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 
819 static 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 
848 static 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  */
863 static 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 }
933 static DEVICE_ATTR_RO(infos);
934 
935 static int parse_arg(const char *buf, unsigned long count, int *val)
936 {
937         if (!count)
938                 return 0;
939         if (count > 31)
940                 return -EINVAL;
941         if (sscanf(buf, "%i", val) != 1)
942                 return -EINVAL;
943         return count;
944 }
945 
946 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
947                               const char *buf, size_t count,
948                               const char *method)
949 {
950         int rv, value;
951 
952         rv = parse_arg(buf, count, &value);
953         if (rv <= 0)
954                 return rv;
955 
956         if (write_acpi_int(asus->handle, method, value))
957                 return -ENODEV;
958         return rv;
959 }
960 
961 /*
962  * LEDD display
963  */
964 static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
965                          char *buf)
966 {
967         struct asus_laptop *asus = dev_get_drvdata(dev);
968 
969         return sprintf(buf, "0x%08x\n", asus->ledd_status);
970 }
971 
972 static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
973                           const char *buf, size_t count)
974 {
975         struct asus_laptop *asus = dev_get_drvdata(dev);
976         int rv, value;
977 
978         rv = parse_arg(buf, count, &value);
979         if (rv > 0) {
980                 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
981                         pr_warn("LED display write failed\n");
982                         return -ENODEV;
983                 }
984                 asus->ledd_status = (u32) value;
985         }
986         return rv;
987 }
988 static DEVICE_ATTR_RW(ledd);
989 
990 /*
991  * Wireless
992  */
993 static int asus_wireless_status(struct asus_laptop *asus, int mask)
994 {
995         unsigned long long status;
996         acpi_status rv = AE_OK;
997 
998         if (!asus->have_rsts)
999                 return (asus->wireless_status & mask) ? 1 : 0;
1000 
1001         rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
1002                                    NULL, &status);
1003         if (ACPI_FAILURE(rv)) {
1004                 pr_warn("Error reading Wireless status\n");
1005                 return -EINVAL;
1006         }
1007         return !!(status & mask);
1008 }
1009 
1010 /*
1011  * WLAN
1012  */
1013 static int asus_wlan_set(struct asus_laptop *asus, int status)
1014 {
1015         if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
1016                 pr_warn("Error setting wlan status to %d\n", status);
1017                 return -EIO;
1018         }
1019         return 0;
1020 }
1021 
1022 static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
1023                          char *buf)
1024 {
1025         struct asus_laptop *asus = dev_get_drvdata(dev);
1026 
1027         return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1028 }
1029 
1030 static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
1031                           const char *buf, size_t count)
1032 {
1033         struct asus_laptop *asus = dev_get_drvdata(dev);
1034 
1035         return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1036 }
1037 static DEVICE_ATTR_RW(wlan);
1038 
1039 /*e
1040  * Bluetooth
1041  */
1042 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1043 {
1044         if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1045                 pr_warn("Error setting bluetooth status to %d\n", status);
1046                 return -EIO;
1047         }
1048         return 0;
1049 }
1050 
1051 static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
1052                               char *buf)
1053 {
1054         struct asus_laptop *asus = dev_get_drvdata(dev);
1055 
1056         return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1057 }
1058 
1059 static ssize_t bluetooth_store(struct device *dev,
1060                                struct device_attribute *attr, const char *buf,
1061                                size_t count)
1062 {
1063         struct asus_laptop *asus = dev_get_drvdata(dev);
1064 
1065         return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1066 }
1067 static DEVICE_ATTR_RW(bluetooth);
1068 
1069 /*
1070  * Wimax
1071  */
1072 static int asus_wimax_set(struct asus_laptop *asus, int status)
1073 {
1074         if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1075                 pr_warn("Error setting wimax status to %d\n", status);
1076                 return -EIO;
1077         }
1078         return 0;
1079 }
1080 
1081 static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
1082                           char *buf)
1083 {
1084         struct asus_laptop *asus = dev_get_drvdata(dev);
1085 
1086         return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1087 }
1088 
1089 static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
1090                            const char *buf, size_t count)
1091 {
1092         struct asus_laptop *asus = dev_get_drvdata(dev);
1093 
1094         return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1095 }
1096 static DEVICE_ATTR_RW(wimax);
1097 
1098 /*
1099  * Wwan
1100  */
1101 static int asus_wwan_set(struct asus_laptop *asus, int status)
1102 {
1103         if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1104                 pr_warn("Error setting wwan status to %d\n", status);
1105                 return -EIO;
1106         }
1107         return 0;
1108 }
1109 
1110 static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
1111                          char *buf)
1112 {
1113         struct asus_laptop *asus = dev_get_drvdata(dev);
1114 
1115         return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1116 }
1117 
1118 static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
1119                           const char *buf, size_t count)
1120 {
1121         struct asus_laptop *asus = dev_get_drvdata(dev);
1122 
1123         return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1124 }
1125 static DEVICE_ATTR_RW(wwan);
1126 
1127 /*
1128  * Display
1129  */
1130 static void asus_set_display(struct asus_laptop *asus, int value)
1131 {
1132         /* no sanity check needed for now */
1133         if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1134                 pr_warn("Error setting display\n");
1135         return;
1136 }
1137 
1138 /*
1139  * Experimental support for display switching. As of now: 1 should activate
1140  * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1141  * Any combination (bitwise) of these will suffice. I never actually tested 4
1142  * displays hooked up simultaneously, so be warned. See the acpi4asus README
1143  * for more info.
1144  */
1145 static ssize_t display_store(struct device *dev, struct device_attribute *attr,
1146                              const char *buf, size_t count)
1147 {
1148         struct asus_laptop *asus = dev_get_drvdata(dev);
1149         int rv, value;
1150 
1151         rv = parse_arg(buf, count, &value);
1152         if (rv > 0)
1153                 asus_set_display(asus, value);
1154         return rv;
1155 }
1156 static DEVICE_ATTR_WO(display);
1157 
1158 /*
1159  * Light Sens
1160  */
1161 static void asus_als_switch(struct asus_laptop *asus, int value)
1162 {
1163         int ret;
1164 
1165         if (asus->is_pega_lucid) {
1166                 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1167                 if (!ret)
1168                         ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1169         } else {
1170                 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1171         }
1172         if (ret)
1173                 pr_warning("Error setting light sensor switch\n");
1174 
1175         asus->light_switch = value;
1176 }
1177 
1178 static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
1179                               char *buf)
1180 {
1181         struct asus_laptop *asus = dev_get_drvdata(dev);
1182 
1183         return sprintf(buf, "%d\n", asus->light_switch);
1184 }
1185 
1186 static ssize_t ls_switch_store(struct device *dev,
1187                                struct device_attribute *attr, const char *buf,
1188                                size_t count)
1189 {
1190         struct asus_laptop *asus = dev_get_drvdata(dev);
1191         int rv, value;
1192 
1193         rv = parse_arg(buf, count, &value);
1194         if (rv > 0)
1195                 asus_als_switch(asus, value ? 1 : 0);
1196 
1197         return rv;
1198 }
1199 static DEVICE_ATTR_RW(ls_switch);
1200 
1201 static void asus_als_level(struct asus_laptop *asus, int value)
1202 {
1203         if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1204                 pr_warn("Error setting light sensor level\n");
1205         asus->light_level = value;
1206 }
1207 
1208 static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
1209                              char *buf)
1210 {
1211         struct asus_laptop *asus = dev_get_drvdata(dev);
1212 
1213         return sprintf(buf, "%d\n", asus->light_level);
1214 }
1215 
1216 static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
1217                               const char *buf, size_t count)
1218 {
1219         struct asus_laptop *asus = dev_get_drvdata(dev);
1220         int rv, value;
1221 
1222         rv = parse_arg(buf, count, &value);
1223         if (rv > 0) {
1224                 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1225                 /* 0 <= value <= 15 */
1226                 asus_als_level(asus, value);
1227         }
1228 
1229         return rv;
1230 }
1231 static DEVICE_ATTR_RW(ls_level);
1232 
1233 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1234 {
1235         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1236         int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1237                                      &buffer);
1238         if (!err) {
1239                 union acpi_object *obj = buffer.pointer;
1240                 if (obj && obj->type == ACPI_TYPE_INTEGER)
1241                         *result = obj->integer.value;
1242                 else
1243                         err = -EIO;
1244         }
1245         return err;
1246 }
1247 
1248 static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
1249                              char *buf)
1250 {
1251         struct asus_laptop *asus = dev_get_drvdata(dev);
1252         int err, hi, lo;
1253 
1254         err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1255         if (!err)
1256                 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1257         if (!err)
1258                 return sprintf(buf, "%d\n", 10 * hi + lo);
1259         return err;
1260 }
1261 static DEVICE_ATTR_RO(ls_value);
1262 
1263 /*
1264  * GPS
1265  */
1266 static int asus_gps_status(struct asus_laptop *asus)
1267 {
1268         unsigned long long status;
1269         acpi_status rv;
1270 
1271         rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1272                                    NULL, &status);
1273         if (ACPI_FAILURE(rv)) {
1274                 pr_warn("Error reading GPS status\n");
1275                 return -ENODEV;
1276         }
1277         return !!status;
1278 }
1279 
1280 static int asus_gps_switch(struct asus_laptop *asus, int status)
1281 {
1282         const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1283 
1284         if (write_acpi_int(asus->handle, meth, 0x02))
1285                 return -ENODEV;
1286         return 0;
1287 }
1288 
1289 static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
1290                         char *buf)
1291 {
1292         struct asus_laptop *asus = dev_get_drvdata(dev);
1293 
1294         return sprintf(buf, "%d\n", asus_gps_status(asus));
1295 }
1296 
1297 static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
1298                          const char *buf, size_t count)
1299 {
1300         struct asus_laptop *asus = dev_get_drvdata(dev);
1301         int rv, value;
1302         int ret;
1303 
1304         rv = parse_arg(buf, count, &value);
1305         if (rv <= 0)
1306                 return -EINVAL;
1307         ret = asus_gps_switch(asus, !!value);
1308         if (ret)
1309                 return ret;
1310         rfkill_set_sw_state(asus->gps.rfkill, !value);
1311         return rv;
1312 }
1313 static DEVICE_ATTR_RW(gps);
1314 
1315 /*
1316  * rfkill
1317  */
1318 static int asus_gps_rfkill_set(void *data, bool blocked)
1319 {
1320         struct asus_laptop *asus = data;
1321 
1322         return asus_gps_switch(asus, !blocked);
1323 }
1324 
1325 static const struct rfkill_ops asus_gps_rfkill_ops = {
1326         .set_block = asus_gps_rfkill_set,
1327 };
1328 
1329 static int asus_rfkill_set(void *data, bool blocked)
1330 {
1331         struct asus_rfkill *rfk = data;
1332         struct asus_laptop *asus = rfk->asus;
1333 
1334         if (rfk->control_id == WL_RSTS)
1335                 return asus_wlan_set(asus, !blocked);
1336         else if (rfk->control_id == BT_RSTS)
1337                 return asus_bluetooth_set(asus, !blocked);
1338         else if (rfk->control_id == WM_RSTS)
1339                 return asus_wimax_set(asus, !blocked);
1340         else if (rfk->control_id == WW_RSTS)
1341                 return asus_wwan_set(asus, !blocked);
1342 
1343         return -EINVAL;
1344 }
1345 
1346 static const struct rfkill_ops asus_rfkill_ops = {
1347         .set_block = asus_rfkill_set,
1348 };
1349 
1350 static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1351 {
1352         if (!rfk->rfkill)
1353                 return ;
1354 
1355         rfkill_unregister(rfk->rfkill);
1356         rfkill_destroy(rfk->rfkill);
1357         rfk->rfkill = NULL;
1358 }
1359 
1360 static void asus_rfkill_exit(struct asus_laptop *asus)
1361 {
1362         asus_rfkill_terminate(&asus->wwan);
1363         asus_rfkill_terminate(&asus->bluetooth);
1364         asus_rfkill_terminate(&asus->wlan);
1365         asus_rfkill_terminate(&asus->gps);
1366 }
1367 
1368 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1369                              const char *name, int control_id, int type,
1370                              const struct rfkill_ops *ops)
1371 {
1372         int result;
1373 
1374         rfk->control_id = control_id;
1375         rfk->asus = asus;
1376         rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1377                                    type, ops, rfk);
1378         if (!rfk->rfkill)
1379                 return -EINVAL;
1380 
1381         result = rfkill_register(rfk->rfkill);
1382         if (result) {
1383                 rfkill_destroy(rfk->rfkill);
1384                 rfk->rfkill = NULL;
1385         }
1386 
1387         return result;
1388 }
1389 
1390 static int asus_rfkill_init(struct asus_laptop *asus)
1391 {
1392         int result = 0;
1393 
1394         if (asus->is_pega_lucid)
1395                 return -ENODEV;
1396 
1397         if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1398             !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1399             !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1400                 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1401                                            -1, RFKILL_TYPE_GPS,
1402                                            &asus_gps_rfkill_ops);
1403         if (result)
1404                 goto exit;
1405 
1406 
1407         if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1408             asus->wled_type == TYPE_RFKILL)
1409                 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1410                                            WL_RSTS, RFKILL_TYPE_WLAN,
1411                                            &asus_rfkill_ops);
1412         if (result)
1413                 goto exit;
1414 
1415         if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1416             asus->bled_type == TYPE_RFKILL)
1417                 result = asus_rfkill_setup(asus, &asus->bluetooth,
1418                                            "asus-bluetooth", BT_RSTS,
1419                                            RFKILL_TYPE_BLUETOOTH,
1420                                            &asus_rfkill_ops);
1421         if (result)
1422                 goto exit;
1423 
1424         if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1425                 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1426                                            WW_RSTS, RFKILL_TYPE_WWAN,
1427                                            &asus_rfkill_ops);
1428         if (result)
1429                 goto exit;
1430 
1431         if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1432                 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1433                                            WM_RSTS, RFKILL_TYPE_WIMAX,
1434                                            &asus_rfkill_ops);
1435         if (result)
1436                 goto exit;
1437 
1438 exit:
1439         if (result)
1440                 asus_rfkill_exit(asus);
1441 
1442         return result;
1443 }
1444 
1445 static int pega_rfkill_set(void *data, bool blocked)
1446 {
1447         struct asus_rfkill *rfk = data;
1448 
1449         int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1450         return ret;
1451 }
1452 
1453 static const struct rfkill_ops pega_rfkill_ops = {
1454         .set_block = pega_rfkill_set,
1455 };
1456 
1457 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1458                              const char *name, int controlid, int rfkill_type)
1459 {
1460         return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1461                                  &pega_rfkill_ops);
1462 }
1463 
1464 static int pega_rfkill_init(struct asus_laptop *asus)
1465 {
1466         int ret = 0;
1467 
1468         if(!asus->is_pega_lucid)
1469                 return -ENODEV;
1470 
1471         ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1472                                 PEGA_WLAN, RFKILL_TYPE_WLAN);
1473         if(ret)
1474                 goto exit;
1475 
1476         ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1477                                 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1478         if(ret)
1479                 goto exit;
1480 
1481         ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1482                                 PEGA_WWAN, RFKILL_TYPE_WWAN);
1483 
1484 exit:
1485         if (ret)
1486                 asus_rfkill_exit(asus);
1487 
1488         return ret;
1489 }
1490 
1491 /*
1492  * Input device (i.e. hotkeys)
1493  */
1494 static void asus_input_notify(struct asus_laptop *asus, int event)
1495 {
1496         if (!asus->inputdev)
1497                 return ;
1498         if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1499                 pr_info("Unknown key %x pressed\n", event);
1500 }
1501 
1502 static int asus_input_init(struct asus_laptop *asus)
1503 {
1504         struct input_dev *input;
1505         int error;
1506 
1507         input = input_allocate_device();
1508         if (!input)
1509                 return -ENOMEM;
1510 
1511         input->name = "Asus Laptop extra buttons";
1512         input->phys = ASUS_LAPTOP_FILE "/input0";
1513         input->id.bustype = BUS_HOST;
1514         input->dev.parent = &asus->platform_device->dev;
1515 
1516         error = sparse_keymap_setup(input, asus_keymap, NULL);
1517         if (error) {
1518                 pr_err("Unable to setup input device keymap\n");
1519                 goto err_free_dev;
1520         }
1521         error = input_register_device(input);
1522         if (error) {
1523                 pr_warn("Unable to register input device\n");
1524                 goto err_free_keymap;
1525         }
1526 
1527         asus->inputdev = input;
1528         return 0;
1529 
1530 err_free_keymap:
1531         sparse_keymap_free(input);
1532 err_free_dev:
1533         input_free_device(input);
1534         return error;
1535 }
1536 
1537 static void asus_input_exit(struct asus_laptop *asus)
1538 {
1539         if (asus->inputdev) {
1540                 sparse_keymap_free(asus->inputdev);
1541                 input_unregister_device(asus->inputdev);
1542         }
1543         asus->inputdev = NULL;
1544 }
1545 
1546 /*
1547  * ACPI driver
1548  */
1549 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1550 {
1551         struct asus_laptop *asus = acpi_driver_data(device);
1552         u16 count;
1553 
1554         /* TODO Find a better way to handle events count. */
1555         count = asus->event_count[event % 128]++;
1556         acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1557                                         dev_name(&asus->device->dev), event,
1558                                         count);
1559 
1560         if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1561                 event = ATKD_BRNUP;
1562         else if (event >= ATKD_BRNDOWN_MIN &&
1563                  event <= ATKD_BRNDOWN_MAX)
1564                 event = ATKD_BRNDOWN;
1565 
1566         /* Brightness events are special */
1567         if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1568                 if (asus->backlight_device != NULL) {
1569                         /* Update the backlight device. */
1570                         asus_backlight_notify(asus);
1571                         return ;
1572                 }
1573         }
1574 
1575         /* Accelerometer "coarse orientation change" event */
1576         if (asus->pega_accel_poll && event == 0xEA) {
1577                 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1578                                KOBJ_CHANGE);
1579                 return ;
1580         }
1581 
1582         asus_input_notify(asus, event);
1583 }
1584 
1585 static struct attribute *asus_attributes[] = {
1586         &dev_attr_infos.attr,
1587         &dev_attr_wlan.attr,
1588         &dev_attr_bluetooth.attr,
1589         &dev_attr_wimax.attr,
1590         &dev_attr_wwan.attr,
1591         &dev_attr_display.attr,
1592         &dev_attr_ledd.attr,
1593         &dev_attr_ls_value.attr,
1594         &dev_attr_ls_level.attr,
1595         &dev_attr_ls_switch.attr,
1596         &dev_attr_gps.attr,
1597         NULL
1598 };
1599 
1600 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1601                                     struct attribute *attr,
1602                                     int idx)
1603 {
1604         struct device *dev = container_of(kobj, struct device, kobj);
1605         struct platform_device *pdev = to_platform_device(dev);
1606         struct asus_laptop *asus = platform_get_drvdata(pdev);
1607         acpi_handle handle = asus->handle;
1608         bool supported;
1609 
1610         if (asus->is_pega_lucid) {
1611                 /* no ls_level interface on the Lucid */
1612                 if (attr == &dev_attr_ls_switch.attr)
1613                         supported = true;
1614                 else if (attr == &dev_attr_ls_level.attr)
1615                         supported = false;
1616                 else
1617                         goto normal;
1618 
1619                 return supported ? attr->mode : 0;
1620         }
1621 
1622 normal:
1623         if (attr == &dev_attr_wlan.attr) {
1624                 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1625 
1626         } else if (attr == &dev_attr_bluetooth.attr) {
1627                 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1628 
1629         } else if (attr == &dev_attr_display.attr) {
1630                 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1631 
1632         } else if (attr == &dev_attr_wimax.attr) {
1633                 supported =
1634                         !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1635 
1636         } else if (attr == &dev_attr_wwan.attr) {
1637                 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1638 
1639         } else if (attr == &dev_attr_ledd.attr) {
1640                 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1641 
1642         } else if (attr == &dev_attr_ls_switch.attr ||
1643                    attr == &dev_attr_ls_level.attr) {
1644                 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1645                         !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1646         } else if (attr == &dev_attr_ls_value.attr) {
1647                 supported = asus->is_pega_lucid;
1648         } else if (attr == &dev_attr_gps.attr) {
1649                 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1650                             !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1651                             !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1652         } else {
1653                 supported = true;
1654         }
1655 
1656         return supported ? attr->mode : 0;
1657 }
1658 
1659 
1660 static const struct attribute_group asus_attr_group = {
1661         .is_visible     = asus_sysfs_is_visible,
1662         .attrs          = asus_attributes,
1663 };
1664 
1665 static int asus_platform_init(struct asus_laptop *asus)
1666 {
1667         int result;
1668 
1669         asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1670         if (!asus->platform_device)
1671                 return -ENOMEM;
1672         platform_set_drvdata(asus->platform_device, asus);
1673 
1674         result = platform_device_add(asus->platform_device);
1675         if (result)
1676                 goto fail_platform_device;
1677 
1678         result = sysfs_create_group(&asus->platform_device->dev.kobj,
1679                                     &asus_attr_group);
1680         if (result)
1681                 goto fail_sysfs;
1682 
1683         return 0;
1684 
1685 fail_sysfs:
1686         platform_device_del(asus->platform_device);
1687 fail_platform_device:
1688         platform_device_put(asus->platform_device);
1689         return result;
1690 }
1691 
1692 static void asus_platform_exit(struct asus_laptop *asus)
1693 {
1694         sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1695         platform_device_unregister(asus->platform_device);
1696 }
1697 
1698 static struct platform_driver platform_driver = {
1699         .driver = {
1700                 .name = ASUS_LAPTOP_FILE,
1701         },
1702 };
1703 
1704 /*
1705  * This function is used to initialize the context with right values. In this
1706  * method, we can make all the detection we want, and modify the asus_laptop
1707  * struct
1708  */
1709 static int asus_laptop_get_info(struct asus_laptop *asus)
1710 {
1711         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1712         union acpi_object *model = NULL;
1713         unsigned long long bsts_result;
1714         char *string = NULL;
1715         acpi_status status;
1716 
1717         /*
1718          * Get DSDT headers early enough to allow for differentiating between
1719          * models, but late enough to allow acpi_bus_register_driver() to fail
1720          * before doing anything ACPI-specific. Should we encounter a machine,
1721          * which needs special handling (i.e. its hotkey device has a different
1722          * HID), this bit will be moved.
1723          */
1724         status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1725         if (ACPI_FAILURE(status))
1726                 pr_warn("Couldn't get the DSDT table header\n");
1727 
1728         /* We have to write 0 on init this far for all ASUS models */
1729         if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1730                 pr_err("Hotkey initialization failed\n");
1731                 return -ENODEV;
1732         }
1733 
1734         /* This needs to be called for some laptops to init properly */
1735         status =
1736             acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1737         if (ACPI_FAILURE(status))
1738                 pr_warn("Error calling BSTS\n");
1739         else if (bsts_result)
1740                 pr_notice("BSTS called, 0x%02x returned\n",
1741                        (uint) bsts_result);
1742 
1743         /* This too ... */
1744         if (write_acpi_int(asus->handle, "CWAP", wapf))
1745                 pr_err("Error calling CWAP(%d)\n", wapf);
1746         /*
1747          * Try to match the object returned by INIT to the specific model.
1748          * Handle every possible object (or the lack of thereof) the DSDT
1749          * writers might throw at us. When in trouble, we pass NULL to
1750          * asus_model_match() and try something completely different.
1751          */
1752         if (buffer.pointer) {
1753                 model = buffer.pointer;
1754                 switch (model->type) {
1755                 case ACPI_TYPE_STRING:
1756                         string = model->string.pointer;
1757                         break;
1758                 case ACPI_TYPE_BUFFER:
1759                         string = model->buffer.pointer;
1760                         break;
1761                 default:
1762                         string = "";
1763                         break;
1764                 }
1765         }
1766         asus->name = kstrdup(string, GFP_KERNEL);
1767         if (!asus->name) {
1768                 kfree(buffer.pointer);
1769                 return -ENOMEM;
1770         }
1771 
1772         if (string)
1773                 pr_notice("  %s model detected\n", string);
1774 
1775         if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1776                 asus->have_rsts = true;
1777 
1778         kfree(model);
1779 
1780         return AE_OK;
1781 }
1782 
1783 static int asus_acpi_init(struct asus_laptop *asus)
1784 {
1785         int result = 0;
1786 
1787         result = acpi_bus_get_status(asus->device);
1788         if (result)
1789                 return result;
1790         if (!asus->device->status.present) {
1791                 pr_err("Hotkey device not present, aborting\n");
1792                 return -ENODEV;
1793         }
1794 
1795         result = asus_laptop_get_info(asus);
1796         if (result)
1797                 return result;
1798 
1799         if (!strcmp(bled_type, "led"))
1800                 asus->bled_type = TYPE_LED;
1801         else if (!strcmp(bled_type, "rfkill"))
1802                 asus->bled_type = TYPE_RFKILL;
1803 
1804         if (!strcmp(wled_type, "led"))
1805                 asus->wled_type = TYPE_LED;
1806         else if (!strcmp(wled_type, "rfkill"))
1807                 asus->wled_type = TYPE_RFKILL;
1808 
1809         if (bluetooth_status >= 0)
1810                 asus_bluetooth_set(asus, !!bluetooth_status);
1811 
1812         if (wlan_status >= 0)
1813                 asus_wlan_set(asus, !!wlan_status);
1814 
1815         if (wimax_status >= 0)
1816                 asus_wimax_set(asus, !!wimax_status);
1817 
1818         if (wwan_status >= 0)
1819                 asus_wwan_set(asus, !!wwan_status);
1820 
1821         /* Keyboard Backlight is on by default */
1822         if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1823                 asus_kled_set(asus, 1);
1824 
1825         /* LED display is off by default */
1826         asus->ledd_status = 0xFFF;
1827 
1828         /* Set initial values of light sensor and level */
1829         asus->light_switch = !!als_status;
1830         asus->light_level = 5;  /* level 5 for sensor sensitivity */
1831 
1832         if (asus->is_pega_lucid) {
1833                 asus_als_switch(asus, asus->light_switch);
1834         } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1835                    !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1836                 asus_als_switch(asus, asus->light_switch);
1837                 asus_als_level(asus, asus->light_level);
1838         }
1839 
1840         return result;
1841 }
1842 
1843 static void asus_dmi_check(void)
1844 {
1845         const char *model;
1846 
1847         model = dmi_get_system_info(DMI_PRODUCT_NAME);
1848         if (!model)
1849                 return;
1850 
1851         /* On L1400B WLED control the sound card, don't mess with it ... */
1852         if (strncmp(model, "L1400B", 6) == 0) {
1853                 wlan_status = -1;
1854         }
1855 }
1856 
1857 static bool asus_device_present;
1858 
1859 static int asus_acpi_add(struct acpi_device *device)
1860 {
1861         struct asus_laptop *asus;
1862         int result;
1863 
1864         pr_notice("Asus Laptop Support version %s\n",
1865                   ASUS_LAPTOP_VERSION);
1866         asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1867         if (!asus)
1868                 return -ENOMEM;
1869         asus->handle = device->handle;
1870         strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1871         strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1872         device->driver_data = asus;
1873         asus->device = device;
1874 
1875         asus_dmi_check();
1876 
1877         result = asus_acpi_init(asus);
1878         if (result)
1879                 goto fail_platform;
1880 
1881         /*
1882          * Need platform type detection first, then the platform
1883          * device.  It is used as a parent for the sub-devices below.
1884          */
1885         asus->is_pega_lucid = asus_check_pega_lucid(asus);
1886         result = asus_platform_init(asus);
1887         if (result)
1888                 goto fail_platform;
1889 
1890         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1891                 result = asus_backlight_init(asus);
1892                 if (result)
1893                         goto fail_backlight;
1894         }
1895 
1896         result = asus_input_init(asus);
1897         if (result)
1898                 goto fail_input;
1899 
1900         result = asus_led_init(asus);
1901         if (result)
1902                 goto fail_led;
1903 
1904         result = asus_rfkill_init(asus);
1905         if (result && result != -ENODEV)
1906                 goto fail_rfkill;
1907 
1908         result = pega_accel_init(asus);
1909         if (result && result != -ENODEV)
1910                 goto fail_pega_accel;
1911 
1912         result = pega_rfkill_init(asus);
1913         if (result && result != -ENODEV)
1914                 goto fail_pega_rfkill;
1915 
1916         asus_device_present = true;
1917         return 0;
1918 
1919 fail_pega_rfkill:
1920         pega_accel_exit(asus);
1921 fail_pega_accel:
1922         asus_rfkill_exit(asus);
1923 fail_rfkill:
1924         asus_led_exit(asus);
1925 fail_led:
1926         asus_input_exit(asus);
1927 fail_input:
1928         asus_backlight_exit(asus);
1929 fail_backlight:
1930         asus_platform_exit(asus);
1931 fail_platform:
1932         kfree(asus);
1933 
1934         return result;
1935 }
1936 
1937 static int asus_acpi_remove(struct acpi_device *device)
1938 {
1939         struct asus_laptop *asus = acpi_driver_data(device);
1940 
1941         asus_backlight_exit(asus);
1942         asus_rfkill_exit(asus);
1943         asus_led_exit(asus);
1944         asus_input_exit(asus);
1945         pega_accel_exit(asus);
1946         asus_platform_exit(asus);
1947 
1948         kfree(asus->name);
1949         kfree(asus);
1950         return 0;
1951 }
1952 
1953 static const struct acpi_device_id asus_device_ids[] = {
1954         {"ATK0100", 0},
1955         {"ATK0101", 0},
1956         {"", 0},
1957 };
1958 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1959 
1960 static struct acpi_driver asus_acpi_driver = {
1961         .name = ASUS_LAPTOP_NAME,
1962         .class = ASUS_LAPTOP_CLASS,
1963         .owner = THIS_MODULE,
1964         .ids = asus_device_ids,
1965         .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1966         .ops = {
1967                 .add = asus_acpi_add,
1968                 .remove = asus_acpi_remove,
1969                 .notify = asus_acpi_notify,
1970                 },
1971 };
1972 
1973 static int __init asus_laptop_init(void)
1974 {
1975         int result;
1976 
1977         result = platform_driver_register(&platform_driver);
1978         if (result < 0)
1979                 return result;
1980 
1981         result = acpi_bus_register_driver(&asus_acpi_driver);
1982         if (result < 0)
1983                 goto fail_acpi_driver;
1984         if (!asus_device_present) {
1985                 result = -ENODEV;
1986                 goto fail_no_device;
1987         }
1988         return 0;
1989 
1990 fail_no_device:
1991         acpi_bus_unregister_driver(&asus_acpi_driver);
1992 fail_acpi_driver:
1993         platform_driver_unregister(&platform_driver);
1994         return result;
1995 }
1996 
1997 static void __exit asus_laptop_exit(void)
1998 {
1999         acpi_bus_unregister_driver(&asus_acpi_driver);
2000         platform_driver_unregister(&platform_driver);
2001 }
2002 
2003 module_init(asus_laptop_init);
2004 module_exit(asus_laptop_exit);
2005 

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