Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

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 
 58 #define ASUS_LAPTOP_VERSION     "0.42"
 59 
 60 #define ASUS_LAPTOP_NAME        "Asus Laptop Support"
 61 #define ASUS_LAPTOP_CLASS       "hotkey"
 62 #define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
 63 #define ASUS_LAPTOP_FILE        KBUILD_MODNAME
 64 #define ASUS_LAPTOP_PREFIX      "\\_SB.ATKD."
 65 
 66 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
 67 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
 68 MODULE_LICENSE("GPL");
 69 
 70 /*
 71  * WAPF defines the behavior of the Fn+Fx wlan key
 72  * The significance of values is yet to be found, but
 73  * most of the time:
 74  * Bit | Bluetooth | WLAN
 75  *  0  | Hardware  | Hardware
 76  *  1  | Hardware  | Software
 77  *  4  | Software  | Software
 78  */
 79 static uint wapf = 1;
 80 module_param(wapf, uint, 0444);
 81 MODULE_PARM_DESC(wapf, "WAPF value");
 82 
 83 static char *wled_type = "unknown";
 84 static char *bled_type = "unknown";
 85 
 86 module_param(wled_type, charp, 0444);
 87 MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
 88                  "(unknown, led or rfkill). "
 89                  "default is unknown");
 90 
 91 module_param(bled_type, charp, 0444);
 92 MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
 93                  "(unknown, led or rfkill). "
 94                  "default is unknown");
 95 
 96 static int wlan_status = 1;
 97 static int bluetooth_status = 1;
 98 static int wimax_status = -1;
 99 static int wwan_status = -1;
100 static int als_status;
101 
102 module_param(wlan_status, int, 0444);
103 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
104                  "(0 = disabled, 1 = enabled, -1 = don't do anything). "
105                  "default is -1");
106 
107 module_param(bluetooth_status, int, 0444);
108 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
109                  "(0 = disabled, 1 = enabled, -1 = don't do anything). "
110                  "default is -1");
111 
112 module_param(wimax_status, int, 0444);
113 MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
114                  "(0 = disabled, 1 = enabled, -1 = don't do anything). "
115                  "default is -1");
116 
117 module_param(wwan_status, int, 0444);
118 MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
119                  "(0 = disabled, 1 = enabled, -1 = don't do anything). "
120                  "default is -1");
121 
122 module_param(als_status, int, 0444);
123 MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
124                  "(0 = disabled, 1 = enabled). "
125                  "default is 0");
126 
127 /*
128  * Some events we use, same for all Asus
129  */
130 #define ATKD_BRNUP_MIN          0x10
131 #define ATKD_BRNUP_MAX          0x1f
132 #define ATKD_BRNDOWN_MIN        0x20
133 #define ATKD_BRNDOWN_MAX        0x2f
134 #define ATKD_BRNDOWN            0x20
135 #define ATKD_BRNUP              0x2f
136 #define ATKD_LCD_ON     0x33
137 #define ATKD_LCD_OFF    0x34
138 
139 /*
140  * Known bits returned by \_SB.ATKD.HWRS
141  */
142 #define WL_HWRS         0x80
143 #define BT_HWRS         0x100
144 
145 /*
146  * Flags for hotk status
147  * WL_ON and BT_ON are also used for wireless_status()
148  */
149 #define WL_RSTS         0x01    /* internal Wifi */
150 #define BT_RSTS         0x02    /* internal Bluetooth */
151 #define WM_RSTS         0x08    /* internal wimax */
152 #define WW_RSTS         0x20    /* internal wwan */
153 
154 /* WLED and BLED type */
155 #define TYPE_UNKNOWN    0
156 #define TYPE_LED        1
157 #define TYPE_RFKILL     2
158 
159 /* LED */
160 #define METHOD_MLED             "MLED"
161 #define METHOD_TLED             "TLED"
162 #define METHOD_RLED             "RLED"  /* W1JC */
163 #define METHOD_PLED             "PLED"  /* A7J */
164 #define METHOD_GLED             "GLED"  /* G1, G2 (probably) */
165 
166 /* LEDD */
167 #define METHOD_LEDD             "SLCM"
168 
169 /*
170  * Bluetooth and WLAN
171  * WLED and BLED are not handled like other XLED, because in some dsdt
172  * they also control the WLAN/Bluetooth device.
173  */
174 #define METHOD_WLAN             "WLED"
175 #define METHOD_BLUETOOTH        "BLED"
176 
177 /* WWAN and WIMAX */
178 #define METHOD_WWAN             "GSMC"
179 #define METHOD_WIMAX            "WMXC"
180 
181 #define METHOD_WL_STATUS        "RSTS"
182 
183 /* Brightness */
184 #define METHOD_BRIGHTNESS_SET   "SPLV"
185 #define METHOD_BRIGHTNESS_GET   "GPLV"
186 
187 /* Display */
188 #define METHOD_SWITCH_DISPLAY   "SDSP"
189 
190 #define METHOD_ALS_CONTROL      "ALSC" /* Z71A Z71V */
191 #define METHOD_ALS_LEVEL        "ALSL" /* Z71A Z71V */
192 
193 /* GPS */
194 /* R2H use different handle for GPS on/off */
195 #define METHOD_GPS_ON           "SDON"
196 #define METHOD_GPS_OFF          "SDOF"
197 #define METHOD_GPS_STATUS       "GPST"
198 
199 /* Keyboard light */
200 #define METHOD_KBD_LIGHT_SET    "SLKB"
201 #define METHOD_KBD_LIGHT_GET    "GLKB"
202 
203 /* For Pegatron Lucid tablet */
204 #define DEVICE_NAME_PEGA        "Lucid"
205 
206 #define METHOD_PEGA_ENABLE      "ENPR"
207 #define METHOD_PEGA_DISABLE     "DAPR"
208 #define PEGA_WLAN       0x00
209 #define PEGA_BLUETOOTH  0x01
210 #define PEGA_WWAN       0x02
211 #define PEGA_ALS        0x04
212 #define PEGA_ALS_POWER  0x05
213 
214 #define METHOD_PEGA_READ        "RDLN"
215 #define PEGA_READ_ALS_H 0x02
216 #define PEGA_READ_ALS_L 0x03
217 
218 #define PEGA_ACCEL_NAME "pega_accel"
219 #define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
220 #define METHOD_XLRX "XLRX"
221 #define METHOD_XLRY "XLRY"
222 #define METHOD_XLRZ "XLRZ"
223 #define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
224 #define PEGA_ACC_RETRIES 3
225 
226 /*
227  * Define a specific led structure to keep the main structure clean
228  */
229 struct asus_led {
230         int wk;
231         struct work_struct work;
232         struct led_classdev led;
233         struct asus_laptop *asus;
234         const char *method;
235 };
236 
237 /*
238  * Same thing for rfkill
239  */
240 struct asus_rfkill {
241         /* type of control. Maps to PEGA_* values or *_RSTS  */
242         int control_id;
243         struct rfkill *rfkill;
244         struct asus_laptop *asus;
245 };
246 
247 /*
248  * This is the main structure, we can use it to store anything interesting
249  * about the hotk device
250  */
251 struct asus_laptop {
252         char *name;             /* laptop name */
253 
254         struct acpi_table_header *dsdt_info;
255         struct platform_device *platform_device;
256         struct acpi_device *device;             /* the device we are in */
257         struct backlight_device *backlight_device;
258 
259         struct input_dev *inputdev;
260         struct key_entry *keymap;
261         struct input_polled_dev *pega_accel_poll;
262 
263         struct asus_led wled;
264         struct asus_led bled;
265         struct asus_led mled;
266         struct asus_led tled;
267         struct asus_led rled;
268         struct asus_led pled;
269         struct asus_led gled;
270         struct asus_led kled;
271         struct workqueue_struct *led_workqueue;
272 
273         int wled_type;
274         int bled_type;
275         int wireless_status;
276         bool have_rsts;
277         bool is_pega_lucid;
278         bool pega_acc_live;
279         int pega_acc_x;
280         int pega_acc_y;
281         int pega_acc_z;
282 
283         struct asus_rfkill wlan;
284         struct asus_rfkill bluetooth;
285         struct asus_rfkill wwan;
286         struct asus_rfkill wimax;
287         struct asus_rfkill gps;
288 
289         acpi_handle handle;     /* the handle of the hotk device */
290         u32 ledd_status;        /* status of the LED display */
291         u8 light_level;         /* light sensor level */
292         u8 light_switch;        /* light sensor switch value */
293         u16 event_count[128];   /* count for each event TODO make this better */
294 };
295 
296 static const struct key_entry asus_keymap[] = {
297         /* Lenovo SL Specific keycodes */
298         {KE_KEY, 0x02, { KEY_SCREENLOCK } },
299         {KE_KEY, 0x05, { KEY_WLAN } },
300         {KE_KEY, 0x08, { KEY_F13 } },
301         {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
302         {KE_KEY, 0x17, { KEY_ZOOM } },
303         {KE_KEY, 0x1f, { KEY_BATTERY } },
304         /* End of Lenovo SL Specific keycodes */
305         {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } },
306         {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } },
307         {KE_KEY, 0x30, { KEY_VOLUMEUP } },
308         {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
309         {KE_KEY, 0x32, { KEY_MUTE } },
310         {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
311         {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
312         {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
313         {KE_KEY, 0x41, { KEY_NEXTSONG } },
314         {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
315         {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
316         {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
317         {KE_KEY, 0x50, { KEY_EMAIL } },
318         {KE_KEY, 0x51, { KEY_WWW } },
319         {KE_KEY, 0x55, { KEY_CALC } },
320         {KE_IGNORE, 0x57, },  /* Battery mode */
321         {KE_IGNORE, 0x58, },  /* AC mode */
322         {KE_KEY, 0x5C, { KEY_SCREENLOCK } },  /* Screenlock */
323         {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */
324         {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */
325         {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */
326         {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
327         {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
328         {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
329         {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
330         {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
331         {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
332         {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
333         {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
334         {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
335         {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
336         {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
337         {KE_IGNORE, 0x6E, },  /* Low Battery notification */
338         {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
339         {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
340         {KE_KEY, 0x82, { KEY_CAMERA } },
341         {KE_KEY, 0x88, { KEY_RFKILL  } }, /* Radio Toggle Key */
342         {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
343         {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
344         {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
345         {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
346         {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
347         {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
348         {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
349         {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
350         {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
351         {KE_KEY, 0x95, { KEY_MEDIA } },
352         {KE_KEY, 0x99, { KEY_PHONE } },
353         {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
354         {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
355         {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
356         {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
357         {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
358         {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
359         {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
360         {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
361         {KE_KEY, 0xB5, { KEY_CALC } },
362         {KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
363         {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
364         {KE_END, 0},
365 };
366 
367 
368 /*
369  * This function evaluates an ACPI method, given an int as parameter, the
370  * method is searched within the scope of the handle, can be NULL. The output
371  * of the method is written is output, which can also be NULL
372  *
373  * returns 0 if write is successful, -1 else.
374  */
375 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
376                               struct acpi_buffer *output)
377 {
378         struct acpi_object_list params; /* list of input parameters (an int) */
379         union acpi_object in_obj;       /* the only param we use */
380         acpi_status status;
381 
382         if (!handle)
383                 return -1;
384 
385         params.count = 1;
386         params.pointer = &in_obj;
387         in_obj.type = ACPI_TYPE_INTEGER;
388         in_obj.integer.value = val;
389 
390         status = acpi_evaluate_object(handle, (char *)method, &params, output);
391         if (status == AE_OK)
392                 return 0;
393         else
394                 return -1;
395 }
396 
397 static int write_acpi_int(acpi_handle handle, const char *method, int val)
398 {
399         return write_acpi_int_ret(handle, method, val, NULL);
400 }
401 
402 static int acpi_check_handle(acpi_handle handle, const char *method,
403                              acpi_handle *ret)
404 {
405         acpi_status status;
406 
407         if (method == NULL)
408                 return -ENODEV;
409 
410         if (ret)
411                 status = acpi_get_handle(handle, (char *)method,
412                                          ret);
413         else {
414                 acpi_handle dummy;
415 
416                 status = acpi_get_handle(handle, (char *)method,
417                                          &dummy);
418         }
419 
420         if (status != AE_OK) {
421                 if (ret)
422                         pr_warn("Error finding %s\n", method);
423                 return -ENODEV;
424         }
425         return 0;
426 }
427 
428 static bool asus_check_pega_lucid(struct asus_laptop *asus)
429 {
430         return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
431            !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
432            !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
433            !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
434 }
435 
436 static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
437 {
438         char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
439         return write_acpi_int(asus->handle, method, unit);
440 }
441 
442 static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
443 {
444         int i, delta;
445         unsigned long long val;
446         for (i = 0; i < PEGA_ACC_RETRIES; i++) {
447                 acpi_evaluate_integer(asus->handle, method, NULL, &val);
448 
449                 /* The output is noisy.  From reading the ASL
450                  * dissassembly, timeout errors are returned with 1's
451                  * in the high word, and the lack of locking around
452                  * thei hi/lo byte reads means that a transition
453                  * between (for example) -1 and 0 could be read as
454                  * 0xff00 or 0x00ff. */
455                 delta = abs(curr - (short)val);
456                 if (delta < 128 && !(val & ~0xffff))
457                         break;
458         }
459         return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
460 }
461 
462 static void pega_accel_poll(struct input_polled_dev *ipd)
463 {
464         struct device *parent = ipd->input->dev.parent;
465         struct asus_laptop *asus = dev_get_drvdata(parent);
466 
467         /* In some cases, the very first call to poll causes a
468          * recursive fault under the polldev worker.  This is
469          * apparently related to very early userspace access to the
470          * device, and perhaps a firmware bug. Fake the first report. */
471         if (!asus->pega_acc_live) {
472                 asus->pega_acc_live = true;
473                 input_report_abs(ipd->input, ABS_X, 0);
474                 input_report_abs(ipd->input, ABS_Y, 0);
475                 input_report_abs(ipd->input, ABS_Z, 0);
476                 input_sync(ipd->input);
477                 return;
478         }
479 
480         asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
481         asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
482         asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
483 
484         /* Note transform, convert to "right/up/out" in the native
485          * landscape orientation (i.e. the vector is the direction of
486          * "real up" in the device's cartiesian coordinates). */
487         input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
488         input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
489         input_report_abs(ipd->input, ABS_Z,  asus->pega_acc_z);
490         input_sync(ipd->input);
491 }
492 
493 static void pega_accel_exit(struct asus_laptop *asus)
494 {
495         if (asus->pega_accel_poll) {
496                 input_unregister_polled_device(asus->pega_accel_poll);
497                 input_free_polled_device(asus->pega_accel_poll);
498         }
499         asus->pega_accel_poll = NULL;
500 }
501 
502 static int pega_accel_init(struct asus_laptop *asus)
503 {
504         int err;
505         struct input_polled_dev *ipd;
506 
507         if (!asus->is_pega_lucid)
508                 return -ENODEV;
509 
510         if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
511             acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
512             acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
513                 return -ENODEV;
514 
515         ipd = input_allocate_polled_device();
516         if (!ipd)
517                 return -ENOMEM;
518 
519         ipd->poll = pega_accel_poll;
520         ipd->poll_interval = 125;
521         ipd->poll_interval_min = 50;
522         ipd->poll_interval_max = 2000;
523 
524         ipd->input->name = PEGA_ACCEL_DESC;
525         ipd->input->phys = PEGA_ACCEL_NAME "/input0";
526         ipd->input->dev.parent = &asus->platform_device->dev;
527         ipd->input->id.bustype = BUS_HOST;
528 
529         set_bit(EV_ABS, ipd->input->evbit);
530         input_set_abs_params(ipd->input, ABS_X,
531                              -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
532         input_set_abs_params(ipd->input, ABS_Y,
533                              -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
534         input_set_abs_params(ipd->input, ABS_Z,
535                              -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
536 
537         err = input_register_polled_device(ipd);
538         if (err)
539                 goto exit;
540 
541         asus->pega_accel_poll = ipd;
542         return 0;
543 
544 exit:
545         input_free_polled_device(ipd);
546         return err;
547 }
548 
549 /* Generic LED function */
550 static int asus_led_set(struct asus_laptop *asus, const char *method,
551                          int value)
552 {
553         if (!strcmp(method, METHOD_MLED))
554                 value = !value;
555         else if (!strcmp(method, METHOD_GLED))
556                 value = !value + 1;
557         else
558                 value = !!value;
559 
560         return write_acpi_int(asus->handle, method, value);
561 }
562 
563 /*
564  * LEDs
565  */
566 /* /sys/class/led handlers */
567 static void asus_led_cdev_set(struct led_classdev *led_cdev,
568                          enum led_brightness value)
569 {
570         struct asus_led *led = container_of(led_cdev, struct asus_led, led);
571         struct asus_laptop *asus = led->asus;
572 
573         led->wk = !!value;
574         queue_work(asus->led_workqueue, &led->work);
575 }
576 
577 static void asus_led_cdev_update(struct work_struct *work)
578 {
579         struct asus_led *led = container_of(work, struct asus_led, work);
580         struct asus_laptop *asus = led->asus;
581 
582         asus_led_set(asus, led->method, led->wk);
583 }
584 
585 static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
586 {
587         return led_cdev->brightness;
588 }
589 
590 /*
591  * Keyboard backlight (also a LED)
592  */
593 static int asus_kled_lvl(struct asus_laptop *asus)
594 {
595         unsigned long long kblv;
596         struct acpi_object_list params;
597         union acpi_object in_obj;
598         acpi_status rv;
599 
600         params.count = 1;
601         params.pointer = &in_obj;
602         in_obj.type = ACPI_TYPE_INTEGER;
603         in_obj.integer.value = 2;
604 
605         rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
606                                    &params, &kblv);
607         if (ACPI_FAILURE(rv)) {
608                 pr_warn("Error reading kled level\n");
609                 return -ENODEV;
610         }
611         return kblv;
612 }
613 
614 static int asus_kled_set(struct asus_laptop *asus, int kblv)
615 {
616         if (kblv > 0)
617                 kblv = (1 << 7) | (kblv & 0x7F);
618         else
619                 kblv = 0;
620 
621         if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
622                 pr_warn("Keyboard LED display write failed\n");
623                 return -EINVAL;
624         }
625         return 0;
626 }
627 
628 static void asus_kled_cdev_set(struct led_classdev *led_cdev,
629                               enum led_brightness value)
630 {
631         struct asus_led *led = container_of(led_cdev, struct asus_led, led);
632         struct asus_laptop *asus = led->asus;
633 
634         led->wk = value;
635         queue_work(asus->led_workqueue, &led->work);
636 }
637 
638 static void asus_kled_cdev_update(struct work_struct *work)
639 {
640         struct asus_led *led = container_of(work, struct asus_led, work);
641         struct asus_laptop *asus = led->asus;
642 
643         asus_kled_set(asus, led->wk);
644 }
645 
646 static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
647 {
648         struct asus_led *led = container_of(led_cdev, struct asus_led, led);
649         struct asus_laptop *asus = led->asus;
650 
651         return asus_kled_lvl(asus);
652 }
653 
654 static void asus_led_exit(struct asus_laptop *asus)
655 {
656         if (!IS_ERR_OR_NULL(asus->wled.led.dev))
657                 led_classdev_unregister(&asus->wled.led);
658         if (!IS_ERR_OR_NULL(asus->bled.led.dev))
659                 led_classdev_unregister(&asus->bled.led);
660         if (!IS_ERR_OR_NULL(asus->mled.led.dev))
661                 led_classdev_unregister(&asus->mled.led);
662         if (!IS_ERR_OR_NULL(asus->tled.led.dev))
663                 led_classdev_unregister(&asus->tled.led);
664         if (!IS_ERR_OR_NULL(asus->pled.led.dev))
665                 led_classdev_unregister(&asus->pled.led);
666         if (!IS_ERR_OR_NULL(asus->rled.led.dev))
667                 led_classdev_unregister(&asus->rled.led);
668         if (!IS_ERR_OR_NULL(asus->gled.led.dev))
669                 led_classdev_unregister(&asus->gled.led);
670         if (!IS_ERR_OR_NULL(asus->kled.led.dev))
671                 led_classdev_unregister(&asus->kled.led);
672         if (asus->led_workqueue) {
673                 destroy_workqueue(asus->led_workqueue);
674                 asus->led_workqueue = NULL;
675         }
676 }
677 
678 /*  Ugly macro, need to fix that later */
679 static int asus_led_register(struct asus_laptop *asus,
680                              struct asus_led *led,
681                              const char *name, const char *method)
682 {
683         struct led_classdev *led_cdev = &led->led;
684 
685         if (!method || acpi_check_handle(asus->handle, method, NULL))
686                 return 0; /* Led not present */
687 
688         led->asus = asus;
689         led->method = method;
690 
691         INIT_WORK(&led->work, asus_led_cdev_update);
692         led_cdev->name = name;
693         led_cdev->brightness_set = asus_led_cdev_set;
694         led_cdev->brightness_get = asus_led_cdev_get;
695         led_cdev->max_brightness = 1;
696         return led_classdev_register(&asus->platform_device->dev, led_cdev);
697 }
698 
699 static int asus_led_init(struct asus_laptop *asus)
700 {
701         int r = 0;
702 
703         /*
704          * The Pegatron Lucid has no physical leds, but all methods are
705          * available in the DSDT...
706          */
707         if (asus->is_pega_lucid)
708                 return 0;
709 
710         /*
711          * Functions that actually update the LED's are called from a
712          * workqueue. By doing this as separate work rather than when the LED
713          * subsystem asks, we avoid messing with the Asus ACPI stuff during a
714          * potentially bad time, such as a timer interrupt.
715          */
716         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
717         if (!asus->led_workqueue)
718                 return -ENOMEM;
719 
720         if (asus->wled_type == TYPE_LED)
721                 r = asus_led_register(asus, &asus->wled, "asus::wlan",
722                                       METHOD_WLAN);
723         if (r)
724                 goto error;
725         if (asus->bled_type == TYPE_LED)
726                 r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
727                                       METHOD_BLUETOOTH);
728         if (r)
729                 goto error;
730         r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
731         if (r)
732                 goto error;
733         r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
734         if (r)
735                 goto error;
736         r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
737         if (r)
738                 goto error;
739         r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
740         if (r)
741                 goto error;
742         r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
743         if (r)
744                 goto error;
745         if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
746             !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
747                 struct asus_led *led = &asus->kled;
748                 struct led_classdev *cdev = &led->led;
749 
750                 led->asus = asus;
751 
752                 INIT_WORK(&led->work, asus_kled_cdev_update);
753                 cdev->name = "asus::kbd_backlight";
754                 cdev->brightness_set = asus_kled_cdev_set;
755                 cdev->brightness_get = asus_kled_cdev_get;
756                 cdev->max_brightness = 3;
757                 r = led_classdev_register(&asus->platform_device->dev, cdev);
758         }
759 error:
760         if (r)
761                 asus_led_exit(asus);
762         return r;
763 }
764 
765 /*
766  * Backlight device
767  */
768 static int asus_read_brightness(struct backlight_device *bd)
769 {
770         struct asus_laptop *asus = bl_get_data(bd);
771         unsigned long long value;
772         acpi_status rv = AE_OK;
773 
774         rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
775                                    NULL, &value);
776         if (ACPI_FAILURE(rv))
777                 pr_warn("Error reading brightness\n");
778 
779         return value;
780 }
781 
782 static int asus_set_brightness(struct backlight_device *bd, int value)
783 {
784         struct asus_laptop *asus = bl_get_data(bd);
785 
786         if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
787                 pr_warn("Error changing brightness\n");
788                 return -EIO;
789         }
790         return 0;
791 }
792 
793 static int update_bl_status(struct backlight_device *bd)
794 {
795         int value = bd->props.brightness;
796 
797         return asus_set_brightness(bd, value);
798 }
799 
800 static const struct backlight_ops asusbl_ops = {
801         .get_brightness = asus_read_brightness,
802         .update_status = update_bl_status,
803 };
804 
805 static int asus_backlight_notify(struct asus_laptop *asus)
806 {
807         struct backlight_device *bd = asus->backlight_device;
808         int old = bd->props.brightness;
809 
810         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
811 
812         return old;
813 }
814 
815 static int asus_backlight_init(struct asus_laptop *asus)
816 {
817         struct backlight_device *bd;
818         struct backlight_properties props;
819 
820         if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
821             acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
822                 return 0;
823 
824         memset(&props, 0, sizeof(struct backlight_properties));
825         props.max_brightness = 15;
826         props.type = BACKLIGHT_PLATFORM;
827 
828         bd = backlight_device_register(ASUS_LAPTOP_FILE,
829                                        &asus->platform_device->dev, asus,
830                                        &asusbl_ops, &props);
831         if (IS_ERR(bd)) {
832                 pr_err("Could not register asus backlight device\n");
833                 asus->backlight_device = NULL;
834                 return PTR_ERR(bd);
835         }
836 
837         asus->backlight_device = bd;
838         bd->props.brightness = asus_read_brightness(bd);
839         bd->props.power = FB_BLANK_UNBLANK;
840         backlight_update_status(bd);
841         return 0;
842 }
843 
844 static void asus_backlight_exit(struct asus_laptop *asus)
845 {
846         backlight_device_unregister(asus->backlight_device);
847         asus->backlight_device = NULL;
848 }
849 
850 /*
851  * Platform device handlers
852  */
853 
854 /*
855  * We write our info in page, we begin at offset off and cannot write more
856  * than count bytes. We set eof to 1 if we handle those 2 values. We return the
857  * number of bytes written in page
858  */
859 static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
860                           char *page)
861 {
862         struct asus_laptop *asus = dev_get_drvdata(dev);
863         int len = 0;
864         unsigned long long temp;
865         char buf[16];           /* enough for all info */
866         acpi_status rv = AE_OK;
867 
868         /*
869          * We use the easy way, we don't care of off and count,
870          * so we don't set eof to 1
871          */
872 
873         len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
874         len += sprintf(page + len, "Model reference    : %s\n", asus->name);
875         /*
876          * The SFUN method probably allows the original driver to get the list
877          * of features supported by a given model. For now, 0x0100 or 0x0800
878          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
879          * The significance of others is yet to be found.
880          */
881         rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
882         if (!ACPI_FAILURE(rv))
883                 len += sprintf(page + len, "SFUN value         : %#x\n",
884                                (uint) temp);
885         /*
886          * The HWRS method return informations about the hardware.
887          * 0x80 bit is for WLAN, 0x100 for Bluetooth.
888          * 0x40 for WWAN, 0x10 for WIMAX.
889          * The significance of others is yet to be found.
890          * We don't currently use this for device detection, and it
891          * takes several seconds to run on some systems.
892          */
893         rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
894         if (!ACPI_FAILURE(rv))
895                 len += sprintf(page + len, "HWRS value         : %#x\n",
896                                (uint) temp);
897         /*
898          * Another value for userspace: the ASYM method returns 0x02 for
899          * battery low and 0x04 for battery critical, its readings tend to be
900          * more accurate than those provided by _BST.
901          * Note: since not all the laptops provide this method, errors are
902          * silently ignored.
903          */
904         rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
905         if (!ACPI_FAILURE(rv))
906                 len += sprintf(page + len, "ASYM value         : %#x\n",
907                                (uint) temp);
908         if (asus->dsdt_info) {
909                 snprintf(buf, 16, "%d", asus->dsdt_info->length);
910                 len += sprintf(page + len, "DSDT length        : %s\n", buf);
911                 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
912                 len += sprintf(page + len, "DSDT checksum      : %s\n", buf);
913                 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
914                 len += sprintf(page + len, "DSDT revision      : %s\n", buf);
915                 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
916                 len += sprintf(page + len, "OEM id             : %s\n", buf);
917                 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
918                 len += sprintf(page + len, "OEM table id       : %s\n", buf);
919                 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
920                 len += sprintf(page + len, "OEM revision       : 0x%s\n", buf);
921                 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
922                 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
923                 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
924                 len += sprintf(page + len, "ASL comp revision  : 0x%s\n", buf);
925         }
926 
927         return len;
928 }
929 static DEVICE_ATTR_RO(infos);
930 
931 static int parse_arg(const char *buf, unsigned long count, int *val)
932 {
933         if (!count)
934                 return 0;
935         if (count > 31)
936                 return -EINVAL;
937         if (sscanf(buf, "%i", val) != 1)
938                 return -EINVAL;
939         return count;
940 }
941 
942 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
943                               const char *buf, size_t count,
944                               const char *method)
945 {
946         int rv, value;
947         int out = 0;
948 
949         rv = parse_arg(buf, count, &value);
950         if (rv > 0)
951                 out = value ? 1 : 0;
952 
953         if (write_acpi_int(asus->handle, method, value))
954                 return -ENODEV;
955         return rv;
956 }
957 
958 /*
959  * LEDD display
960  */
961 static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
962                          char *buf)
963 {
964         struct asus_laptop *asus = dev_get_drvdata(dev);
965 
966         return sprintf(buf, "0x%08x\n", asus->ledd_status);
967 }
968 
969 static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
970                           const char *buf, size_t count)
971 {
972         struct asus_laptop *asus = dev_get_drvdata(dev);
973         int rv, value;
974 
975         rv = parse_arg(buf, count, &value);
976         if (rv > 0) {
977                 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
978                         pr_warn("LED display write failed\n");
979                         return -ENODEV;
980                 }
981                 asus->ledd_status = (u32) value;
982         }
983         return rv;
984 }
985 static DEVICE_ATTR_RW(ledd);
986 
987 /*
988  * Wireless
989  */
990 static int asus_wireless_status(struct asus_laptop *asus, int mask)
991 {
992         unsigned long long status;
993         acpi_status rv = AE_OK;
994 
995         if (!asus->have_rsts)
996                 return (asus->wireless_status & mask) ? 1 : 0;
997 
998         rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
999                                    NULL, &status);
1000         if (ACPI_FAILURE(rv)) {
1001                 pr_warn("Error reading Wireless status\n");
1002                 return -EINVAL;
1003         }
1004         return !!(status & mask);
1005 }
1006 
1007 /*
1008  * WLAN
1009  */
1010 static int asus_wlan_set(struct asus_laptop *asus, int status)
1011 {
1012         if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
1013                 pr_warn("Error setting wlan status to %d\n", status);
1014                 return -EIO;
1015         }
1016         return 0;
1017 }
1018 
1019 static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
1020                          char *buf)
1021 {
1022         struct asus_laptop *asus = dev_get_drvdata(dev);
1023 
1024         return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1025 }
1026 
1027 static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
1028                           const char *buf, size_t count)
1029 {
1030         struct asus_laptop *asus = dev_get_drvdata(dev);
1031 
1032         return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1033 }
1034 static DEVICE_ATTR_RW(wlan);
1035 
1036 /*e
1037  * Bluetooth
1038  */
1039 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1040 {
1041         if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1042                 pr_warn("Error setting bluetooth status to %d\n", status);
1043                 return -EIO;
1044         }
1045         return 0;
1046 }
1047 
1048 static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
1049                               char *buf)
1050 {
1051         struct asus_laptop *asus = dev_get_drvdata(dev);
1052 
1053         return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1054 }
1055 
1056 static ssize_t bluetooth_store(struct device *dev,
1057                                struct device_attribute *attr, const char *buf,
1058                                size_t count)
1059 {
1060         struct asus_laptop *asus = dev_get_drvdata(dev);
1061 
1062         return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1063 }
1064 static DEVICE_ATTR_RW(bluetooth);
1065 
1066 /*
1067  * Wimax
1068  */
1069 static int asus_wimax_set(struct asus_laptop *asus, int status)
1070 {
1071         if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1072                 pr_warn("Error setting wimax status to %d\n", status);
1073                 return -EIO;
1074         }
1075         return 0;
1076 }
1077 
1078 static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
1079                           char *buf)
1080 {
1081         struct asus_laptop *asus = dev_get_drvdata(dev);
1082 
1083         return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1084 }
1085 
1086 static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
1087                            const char *buf, size_t count)
1088 {
1089         struct asus_laptop *asus = dev_get_drvdata(dev);
1090 
1091         return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1092 }
1093 static DEVICE_ATTR_RW(wimax);
1094 
1095 /*
1096  * Wwan
1097  */
1098 static int asus_wwan_set(struct asus_laptop *asus, int status)
1099 {
1100         if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1101                 pr_warn("Error setting wwan status to %d\n", status);
1102                 return -EIO;
1103         }
1104         return 0;
1105 }
1106 
1107 static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
1108                          char *buf)
1109 {
1110         struct asus_laptop *asus = dev_get_drvdata(dev);
1111 
1112         return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1113 }
1114 
1115 static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
1116                           const char *buf, size_t count)
1117 {
1118         struct asus_laptop *asus = dev_get_drvdata(dev);
1119 
1120         return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1121 }
1122 static DEVICE_ATTR_RW(wwan);
1123 
1124 /*
1125  * Display
1126  */
1127 static void asus_set_display(struct asus_laptop *asus, int value)
1128 {
1129         /* no sanity check needed for now */
1130         if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1131                 pr_warn("Error setting display\n");
1132         return;
1133 }
1134 
1135 /*
1136  * Experimental support for display switching. As of now: 1 should activate
1137  * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1138  * Any combination (bitwise) of these will suffice. I never actually tested 4
1139  * displays hooked up simultaneously, so be warned. See the acpi4asus README
1140  * for more info.
1141  */
1142 static ssize_t display_store(struct device *dev, struct device_attribute *attr,
1143                              const char *buf, size_t count)
1144 {
1145         struct asus_laptop *asus = dev_get_drvdata(dev);
1146         int rv, value;
1147 
1148         rv = parse_arg(buf, count, &value);
1149         if (rv > 0)
1150                 asus_set_display(asus, value);
1151         return rv;
1152 }
1153 static DEVICE_ATTR_WO(display);
1154 
1155 /*
1156  * Light Sens
1157  */
1158 static void asus_als_switch(struct asus_laptop *asus, int value)
1159 {
1160         int ret;
1161 
1162         if (asus->is_pega_lucid) {
1163                 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1164                 if (!ret)
1165                         ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1166         } else {
1167                 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1168         }
1169         if (ret)
1170                 pr_warning("Error setting light sensor switch\n");
1171 
1172         asus->light_switch = value;
1173 }
1174 
1175 static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
1176                               char *buf)
1177 {
1178         struct asus_laptop *asus = dev_get_drvdata(dev);
1179 
1180         return sprintf(buf, "%d\n", asus->light_switch);
1181 }
1182 
1183 static ssize_t ls_switch_store(struct device *dev,
1184                                struct device_attribute *attr, const char *buf,
1185                                size_t count)
1186 {
1187         struct asus_laptop *asus = dev_get_drvdata(dev);
1188         int rv, value;
1189 
1190         rv = parse_arg(buf, count, &value);
1191         if (rv > 0)
1192                 asus_als_switch(asus, value ? 1 : 0);
1193 
1194         return rv;
1195 }
1196 static DEVICE_ATTR_RW(ls_switch);
1197 
1198 static void asus_als_level(struct asus_laptop *asus, int value)
1199 {
1200         if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1201                 pr_warn("Error setting light sensor level\n");
1202         asus->light_level = value;
1203 }
1204 
1205 static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
1206                              char *buf)
1207 {
1208         struct asus_laptop *asus = dev_get_drvdata(dev);
1209 
1210         return sprintf(buf, "%d\n", asus->light_level);
1211 }
1212 
1213 static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
1214                               const char *buf, size_t count)
1215 {
1216         struct asus_laptop *asus = dev_get_drvdata(dev);
1217         int rv, value;
1218 
1219         rv = parse_arg(buf, count, &value);
1220         if (rv > 0) {
1221                 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1222                 /* 0 <= value <= 15 */
1223                 asus_als_level(asus, value);
1224         }
1225 
1226         return rv;
1227 }
1228 static DEVICE_ATTR_RW(ls_level);
1229 
1230 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1231 {
1232         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1233         int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1234                                      &buffer);
1235         if (!err) {
1236                 union acpi_object *obj = buffer.pointer;
1237                 if (obj && obj->type == ACPI_TYPE_INTEGER)
1238                         *result = obj->integer.value;
1239                 else
1240                         err = -EIO;
1241         }
1242         return err;
1243 }
1244 
1245 static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
1246                              char *buf)
1247 {
1248         struct asus_laptop *asus = dev_get_drvdata(dev);
1249         int err, hi, lo;
1250 
1251         err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1252         if (!err)
1253                 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1254         if (!err)
1255                 return sprintf(buf, "%d\n", 10 * hi + lo);
1256         return err;
1257 }
1258 static DEVICE_ATTR_RO(ls_value);
1259 
1260 /*
1261  * GPS
1262  */
1263 static int asus_gps_status(struct asus_laptop *asus)
1264 {
1265         unsigned long long status;
1266         acpi_status rv = AE_OK;
1267 
1268         rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1269                                    NULL, &status);
1270         if (ACPI_FAILURE(rv)) {
1271                 pr_warn("Error reading GPS status\n");
1272                 return -ENODEV;
1273         }
1274         return !!status;
1275 }
1276 
1277 static int asus_gps_switch(struct asus_laptop *asus, int status)
1278 {
1279         const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1280 
1281         if (write_acpi_int(asus->handle, meth, 0x02))
1282                 return -ENODEV;
1283         return 0;
1284 }
1285 
1286 static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
1287                         char *buf)
1288 {
1289         struct asus_laptop *asus = dev_get_drvdata(dev);
1290 
1291         return sprintf(buf, "%d\n", asus_gps_status(asus));
1292 }
1293 
1294 static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
1295                          const char *buf, size_t count)
1296 {
1297         struct asus_laptop *asus = dev_get_drvdata(dev);
1298         int rv, value;
1299         int ret;
1300 
1301         rv = parse_arg(buf, count, &value);
1302         if (rv <= 0)
1303                 return -EINVAL;
1304         ret = asus_gps_switch(asus, !!value);
1305         if (ret)
1306                 return ret;
1307         rfkill_set_sw_state(asus->gps.rfkill, !value);
1308         return rv;
1309 }
1310 static DEVICE_ATTR_RW(gps);
1311 
1312 /*
1313  * rfkill
1314  */
1315 static int asus_gps_rfkill_set(void *data, bool blocked)
1316 {
1317         struct asus_laptop *asus = data;
1318 
1319         return asus_gps_switch(asus, !blocked);
1320 }
1321 
1322 static const struct rfkill_ops asus_gps_rfkill_ops = {
1323         .set_block = asus_gps_rfkill_set,
1324 };
1325 
1326 static int asus_rfkill_set(void *data, bool blocked)
1327 {
1328         struct asus_rfkill *rfk = data;
1329         struct asus_laptop *asus = rfk->asus;
1330 
1331         if (rfk->control_id == WL_RSTS)
1332                 return asus_wlan_set(asus, !blocked);
1333         else if (rfk->control_id == BT_RSTS)
1334                 return asus_bluetooth_set(asus, !blocked);
1335         else if (rfk->control_id == WM_RSTS)
1336                 return asus_wimax_set(asus, !blocked);
1337         else if (rfk->control_id == WW_RSTS)
1338                 return asus_wwan_set(asus, !blocked);
1339 
1340         return -EINVAL;
1341 }
1342 
1343 static const struct rfkill_ops asus_rfkill_ops = {
1344         .set_block = asus_rfkill_set,
1345 };
1346 
1347 static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1348 {
1349         if (!rfk->rfkill)
1350                 return ;
1351 
1352         rfkill_unregister(rfk->rfkill);
1353         rfkill_destroy(rfk->rfkill);
1354         rfk->rfkill = NULL;
1355 }
1356 
1357 static void asus_rfkill_exit(struct asus_laptop *asus)
1358 {
1359         asus_rfkill_terminate(&asus->wwan);
1360         asus_rfkill_terminate(&asus->bluetooth);
1361         asus_rfkill_terminate(&asus->wlan);
1362         asus_rfkill_terminate(&asus->gps);
1363 }
1364 
1365 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1366                              const char *name, int control_id, int type,
1367                              const struct rfkill_ops *ops)
1368 {
1369         int result;
1370 
1371         rfk->control_id = control_id;
1372         rfk->asus = asus;
1373         rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1374                                    type, ops, rfk);
1375         if (!rfk->rfkill)
1376                 return -EINVAL;
1377 
1378         result = rfkill_register(rfk->rfkill);
1379         if (result) {
1380                 rfkill_destroy(rfk->rfkill);
1381                 rfk->rfkill = NULL;
1382         }
1383 
1384         return result;
1385 }
1386 
1387 static int asus_rfkill_init(struct asus_laptop *asus)
1388 {
1389         int result = 0;
1390 
1391         if (asus->is_pega_lucid)
1392                 return -ENODEV;
1393 
1394         if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1395             !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1396             !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1397                 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1398                                            -1, RFKILL_TYPE_GPS,
1399                                            &asus_gps_rfkill_ops);
1400         if (result)
1401                 goto exit;
1402 
1403 
1404         if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1405             asus->wled_type == TYPE_RFKILL)
1406                 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1407                                            WL_RSTS, RFKILL_TYPE_WLAN,
1408                                            &asus_rfkill_ops);
1409         if (result)
1410                 goto exit;
1411 
1412         if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1413             asus->bled_type == TYPE_RFKILL)
1414                 result = asus_rfkill_setup(asus, &asus->bluetooth,
1415                                            "asus-bluetooth", BT_RSTS,
1416                                            RFKILL_TYPE_BLUETOOTH,
1417                                            &asus_rfkill_ops);
1418         if (result)
1419                 goto exit;
1420 
1421         if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1422                 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1423                                            WW_RSTS, RFKILL_TYPE_WWAN,
1424                                            &asus_rfkill_ops);
1425         if (result)
1426                 goto exit;
1427 
1428         if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1429                 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1430                                            WM_RSTS, RFKILL_TYPE_WIMAX,
1431                                            &asus_rfkill_ops);
1432         if (result)
1433                 goto exit;
1434 
1435 exit:
1436         if (result)
1437                 asus_rfkill_exit(asus);
1438 
1439         return result;
1440 }
1441 
1442 static int pega_rfkill_set(void *data, bool blocked)
1443 {
1444         struct asus_rfkill *rfk = data;
1445 
1446         int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1447         return ret;
1448 }
1449 
1450 static const struct rfkill_ops pega_rfkill_ops = {
1451         .set_block = pega_rfkill_set,
1452 };
1453 
1454 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1455                              const char *name, int controlid, int rfkill_type)
1456 {
1457         return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1458                                  &pega_rfkill_ops);
1459 }
1460 
1461 static int pega_rfkill_init(struct asus_laptop *asus)
1462 {
1463         int ret = 0;
1464 
1465         if(!asus->is_pega_lucid)
1466                 return -ENODEV;
1467 
1468         ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1469                                 PEGA_WLAN, RFKILL_TYPE_WLAN);
1470         if(ret)
1471                 goto exit;
1472 
1473         ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1474                                 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1475         if(ret)
1476                 goto exit;
1477 
1478         ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1479                                 PEGA_WWAN, RFKILL_TYPE_WWAN);
1480 
1481 exit:
1482         if (ret)
1483                 asus_rfkill_exit(asus);
1484 
1485         return ret;
1486 }
1487 
1488 /*
1489  * Input device (i.e. hotkeys)
1490  */
1491 static void asus_input_notify(struct asus_laptop *asus, int event)
1492 {
1493         if (!asus->inputdev)
1494                 return ;
1495         if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1496                 pr_info("Unknown key %x pressed\n", event);
1497 }
1498 
1499 static int asus_input_init(struct asus_laptop *asus)
1500 {
1501         struct input_dev *input;
1502         int error;
1503 
1504         input = input_allocate_device();
1505         if (!input)
1506                 return -ENOMEM;
1507 
1508         input->name = "Asus Laptop extra buttons";
1509         input->phys = ASUS_LAPTOP_FILE "/input0";
1510         input->id.bustype = BUS_HOST;
1511         input->dev.parent = &asus->platform_device->dev;
1512 
1513         error = sparse_keymap_setup(input, asus_keymap, NULL);
1514         if (error) {
1515                 pr_err("Unable to setup input device keymap\n");
1516                 goto err_free_dev;
1517         }
1518         error = input_register_device(input);
1519         if (error) {
1520                 pr_warn("Unable to register input device\n");
1521                 goto err_free_keymap;
1522         }
1523 
1524         asus->inputdev = input;
1525         return 0;
1526 
1527 err_free_keymap:
1528         sparse_keymap_free(input);
1529 err_free_dev:
1530         input_free_device(input);
1531         return error;
1532 }
1533 
1534 static void asus_input_exit(struct asus_laptop *asus)
1535 {
1536         if (asus->inputdev) {
1537                 sparse_keymap_free(asus->inputdev);
1538                 input_unregister_device(asus->inputdev);
1539         }
1540         asus->inputdev = NULL;
1541 }
1542 
1543 /*
1544  * ACPI driver
1545  */
1546 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1547 {
1548         struct asus_laptop *asus = acpi_driver_data(device);
1549         u16 count;
1550 
1551         /* TODO Find a better way to handle events count. */
1552         count = asus->event_count[event % 128]++;
1553         acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1554                                         dev_name(&asus->device->dev), event,
1555                                         count);
1556 
1557         if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1558                 event = ATKD_BRNUP;
1559         else if (event >= ATKD_BRNDOWN_MIN &&
1560                  event <= ATKD_BRNDOWN_MAX)
1561                 event = ATKD_BRNDOWN;
1562 
1563         /* Brightness events are special */
1564         if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1565                 if (asus->backlight_device != NULL) {
1566                         /* Update the backlight device. */
1567                         asus_backlight_notify(asus);
1568                         return ;
1569                 }
1570         }
1571 
1572         /* Accelerometer "coarse orientation change" event */
1573         if (asus->pega_accel_poll && event == 0xEA) {
1574                 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1575                                KOBJ_CHANGE);
1576                 return ;
1577         }
1578 
1579         asus_input_notify(asus, event);
1580 }
1581 
1582 static struct attribute *asus_attributes[] = {
1583         &dev_attr_infos.attr,
1584         &dev_attr_wlan.attr,
1585         &dev_attr_bluetooth.attr,
1586         &dev_attr_wimax.attr,
1587         &dev_attr_wwan.attr,
1588         &dev_attr_display.attr,
1589         &dev_attr_ledd.attr,
1590         &dev_attr_ls_value.attr,
1591         &dev_attr_ls_level.attr,
1592         &dev_attr_ls_switch.attr,
1593         &dev_attr_gps.attr,
1594         NULL
1595 };
1596 
1597 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1598                                     struct attribute *attr,
1599                                     int idx)
1600 {
1601         struct device *dev = container_of(kobj, struct device, kobj);
1602         struct platform_device *pdev = to_platform_device(dev);
1603         struct asus_laptop *asus = platform_get_drvdata(pdev);
1604         acpi_handle handle = asus->handle;
1605         bool supported;
1606 
1607         if (asus->is_pega_lucid) {
1608                 /* no ls_level interface on the Lucid */
1609                 if (attr == &dev_attr_ls_switch.attr)
1610                         supported = true;
1611                 else if (attr == &dev_attr_ls_level.attr)
1612                         supported = false;
1613                 else
1614                         goto normal;
1615 
1616                 return supported ? attr->mode : 0;
1617         }
1618 
1619 normal:
1620         if (attr == &dev_attr_wlan.attr) {
1621                 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1622 
1623         } else if (attr == &dev_attr_bluetooth.attr) {
1624                 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1625 
1626         } else if (attr == &dev_attr_display.attr) {
1627                 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1628 
1629         } else if (attr == &dev_attr_wimax.attr) {
1630                 supported =
1631                         !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1632 
1633         } else if (attr == &dev_attr_wwan.attr) {
1634                 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1635 
1636         } else if (attr == &dev_attr_ledd.attr) {
1637                 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1638 
1639         } else if (attr == &dev_attr_ls_switch.attr ||
1640                    attr == &dev_attr_ls_level.attr) {
1641                 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1642                         !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1643         } else if (attr == &dev_attr_ls_value.attr) {
1644                 supported = asus->is_pega_lucid;
1645         } else if (attr == &dev_attr_gps.attr) {
1646                 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1647                             !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1648                             !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1649         } else {
1650                 supported = true;
1651         }
1652 
1653         return supported ? attr->mode : 0;
1654 }
1655 
1656 
1657 static const struct attribute_group asus_attr_group = {
1658         .is_visible     = asus_sysfs_is_visible,
1659         .attrs          = asus_attributes,
1660 };
1661 
1662 static int asus_platform_init(struct asus_laptop *asus)
1663 {
1664         int result;
1665 
1666         asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1667         if (!asus->platform_device)
1668                 return -ENOMEM;
1669         platform_set_drvdata(asus->platform_device, asus);
1670 
1671         result = platform_device_add(asus->platform_device);
1672         if (result)
1673                 goto fail_platform_device;
1674 
1675         result = sysfs_create_group(&asus->platform_device->dev.kobj,
1676                                     &asus_attr_group);
1677         if (result)
1678                 goto fail_sysfs;
1679 
1680         return 0;
1681 
1682 fail_sysfs:
1683         platform_device_del(asus->platform_device);
1684 fail_platform_device:
1685         platform_device_put(asus->platform_device);
1686         return result;
1687 }
1688 
1689 static void asus_platform_exit(struct asus_laptop *asus)
1690 {
1691         sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1692         platform_device_unregister(asus->platform_device);
1693 }
1694 
1695 static struct platform_driver platform_driver = {
1696         .driver = {
1697                 .name = ASUS_LAPTOP_FILE,
1698         },
1699 };
1700 
1701 /*
1702  * This function is used to initialize the context with right values. In this
1703  * method, we can make all the detection we want, and modify the asus_laptop
1704  * struct
1705  */
1706 static int asus_laptop_get_info(struct asus_laptop *asus)
1707 {
1708         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1709         union acpi_object *model = NULL;
1710         unsigned long long bsts_result;
1711         char *string = NULL;
1712         acpi_status status;
1713 
1714         /*
1715          * Get DSDT headers early enough to allow for differentiating between
1716          * models, but late enough to allow acpi_bus_register_driver() to fail
1717          * before doing anything ACPI-specific. Should we encounter a machine,
1718          * which needs special handling (i.e. its hotkey device has a different
1719          * HID), this bit will be moved.
1720          */
1721         status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1722         if (ACPI_FAILURE(status))
1723                 pr_warn("Couldn't get the DSDT table header\n");
1724 
1725         /* We have to write 0 on init this far for all ASUS models */
1726         if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1727                 pr_err("Hotkey initialization failed\n");
1728                 return -ENODEV;
1729         }
1730 
1731         /* This needs to be called for some laptops to init properly */
1732         status =
1733             acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1734         if (ACPI_FAILURE(status))
1735                 pr_warn("Error calling BSTS\n");
1736         else if (bsts_result)
1737                 pr_notice("BSTS called, 0x%02x returned\n",
1738                        (uint) bsts_result);
1739 
1740         /* This too ... */
1741         if (write_acpi_int(asus->handle, "CWAP", wapf))
1742                 pr_err("Error calling CWAP(%d)\n", wapf);
1743         /*
1744          * Try to match the object returned by INIT to the specific model.
1745          * Handle every possible object (or the lack of thereof) the DSDT
1746          * writers might throw at us. When in trouble, we pass NULL to
1747          * asus_model_match() and try something completely different.
1748          */
1749         if (buffer.pointer) {
1750                 model = buffer.pointer;
1751                 switch (model->type) {
1752                 case ACPI_TYPE_STRING:
1753                         string = model->string.pointer;
1754                         break;
1755                 case ACPI_TYPE_BUFFER:
1756                         string = model->buffer.pointer;
1757                         break;
1758                 default:
1759                         string = "";
1760                         break;
1761                 }
1762         }
1763         asus->name = kstrdup(string, GFP_KERNEL);
1764         if (!asus->name) {
1765                 kfree(buffer.pointer);
1766                 return -ENOMEM;
1767         }
1768 
1769         if (string)
1770                 pr_notice("  %s model detected\n", string);
1771 
1772         if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1773                 asus->have_rsts = true;
1774 
1775         kfree(model);
1776 
1777         return AE_OK;
1778 }
1779 
1780 static int asus_acpi_init(struct asus_laptop *asus)
1781 {
1782         int result = 0;
1783 
1784         result = acpi_bus_get_status(asus->device);
1785         if (result)
1786                 return result;
1787         if (!asus->device->status.present) {
1788                 pr_err("Hotkey device not present, aborting\n");
1789                 return -ENODEV;
1790         }
1791 
1792         result = asus_laptop_get_info(asus);
1793         if (result)
1794                 return result;
1795 
1796         if (!strcmp(bled_type, "led"))
1797                 asus->bled_type = TYPE_LED;
1798         else if (!strcmp(bled_type, "rfkill"))
1799                 asus->bled_type = TYPE_RFKILL;
1800 
1801         if (!strcmp(wled_type, "led"))
1802                 asus->wled_type = TYPE_LED;
1803         else if (!strcmp(wled_type, "rfkill"))
1804                 asus->wled_type = TYPE_RFKILL;
1805 
1806         if (bluetooth_status >= 0)
1807                 asus_bluetooth_set(asus, !!bluetooth_status);
1808 
1809         if (wlan_status >= 0)
1810                 asus_wlan_set(asus, !!wlan_status);
1811 
1812         if (wimax_status >= 0)
1813                 asus_wimax_set(asus, !!wimax_status);
1814 
1815         if (wwan_status >= 0)
1816                 asus_wwan_set(asus, !!wwan_status);
1817 
1818         /* Keyboard Backlight is on by default */
1819         if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1820                 asus_kled_set(asus, 1);
1821 
1822         /* LED display is off by default */
1823         asus->ledd_status = 0xFFF;
1824 
1825         /* Set initial values of light sensor and level */
1826         asus->light_switch = !!als_status;
1827         asus->light_level = 5;  /* level 5 for sensor sensitivity */
1828 
1829         if (asus->is_pega_lucid) {
1830                 asus_als_switch(asus, asus->light_switch);
1831         } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1832                    !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1833                 asus_als_switch(asus, asus->light_switch);
1834                 asus_als_level(asus, asus->light_level);
1835         }
1836 
1837         return result;
1838 }
1839 
1840 static void asus_dmi_check(void)
1841 {
1842         const char *model;
1843 
1844         model = dmi_get_system_info(DMI_PRODUCT_NAME);
1845         if (!model)
1846                 return;
1847 
1848         /* On L1400B WLED control the sound card, don't mess with it ... */
1849         if (strncmp(model, "L1400B", 6) == 0) {
1850                 wlan_status = -1;
1851         }
1852 }
1853 
1854 static bool asus_device_present;
1855 
1856 static int asus_acpi_add(struct acpi_device *device)
1857 {
1858         struct asus_laptop *asus;
1859         int result;
1860 
1861         pr_notice("Asus Laptop Support version %s\n",
1862                   ASUS_LAPTOP_VERSION);
1863         asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1864         if (!asus)
1865                 return -ENOMEM;
1866         asus->handle = device->handle;
1867         strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1868         strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1869         device->driver_data = asus;
1870         asus->device = device;
1871 
1872         asus_dmi_check();
1873 
1874         result = asus_acpi_init(asus);
1875         if (result)
1876                 goto fail_platform;
1877 
1878         /*
1879          * Need platform type detection first, then the platform
1880          * device.  It is used as a parent for the sub-devices below.
1881          */
1882         asus->is_pega_lucid = asus_check_pega_lucid(asus);
1883         result = asus_platform_init(asus);
1884         if (result)
1885                 goto fail_platform;
1886 
1887         if (!acpi_video_backlight_support()) {
1888                 result = asus_backlight_init(asus);
1889                 if (result)
1890                         goto fail_backlight;
1891         } else
1892                 pr_info("Backlight controlled by ACPI video driver\n");
1893 
1894         result = asus_input_init(asus);
1895         if (result)
1896                 goto fail_input;
1897 
1898         result = asus_led_init(asus);
1899         if (result)
1900                 goto fail_led;
1901 
1902         result = asus_rfkill_init(asus);
1903         if (result && result != -ENODEV)
1904                 goto fail_rfkill;
1905 
1906         result = pega_accel_init(asus);
1907         if (result && result != -ENODEV)
1908                 goto fail_pega_accel;
1909 
1910         result = pega_rfkill_init(asus);
1911         if (result && result != -ENODEV)
1912                 goto fail_pega_rfkill;
1913 
1914         asus_device_present = true;
1915         return 0;
1916 
1917 fail_pega_rfkill:
1918         pega_accel_exit(asus);
1919 fail_pega_accel:
1920         asus_rfkill_exit(asus);
1921 fail_rfkill:
1922         asus_led_exit(asus);
1923 fail_led:
1924         asus_input_exit(asus);
1925 fail_input:
1926         asus_backlight_exit(asus);
1927 fail_backlight:
1928         asus_platform_exit(asus);
1929 fail_platform:
1930         kfree(asus);
1931 
1932         return result;
1933 }
1934 
1935 static int asus_acpi_remove(struct acpi_device *device)
1936 {
1937         struct asus_laptop *asus = acpi_driver_data(device);
1938 
1939         asus_backlight_exit(asus);
1940         asus_rfkill_exit(asus);
1941         asus_led_exit(asus);
1942         asus_input_exit(asus);
1943         pega_accel_exit(asus);
1944         asus_platform_exit(asus);
1945 
1946         kfree(asus->name);
1947         kfree(asus);
1948         return 0;
1949 }
1950 
1951 static const struct acpi_device_id asus_device_ids[] = {
1952         {"ATK0100", 0},
1953         {"ATK0101", 0},
1954         {"", 0},
1955 };
1956 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1957 
1958 static struct acpi_driver asus_acpi_driver = {
1959         .name = ASUS_LAPTOP_NAME,
1960         .class = ASUS_LAPTOP_CLASS,
1961         .owner = THIS_MODULE,
1962         .ids = asus_device_ids,
1963         .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1964         .ops = {
1965                 .add = asus_acpi_add,
1966                 .remove = asus_acpi_remove,
1967                 .notify = asus_acpi_notify,
1968                 },
1969 };
1970 
1971 static int __init asus_laptop_init(void)
1972 {
1973         int result;
1974 
1975         result = platform_driver_register(&platform_driver);
1976         if (result < 0)
1977                 return result;
1978 
1979         result = acpi_bus_register_driver(&asus_acpi_driver);
1980         if (result < 0)
1981                 goto fail_acpi_driver;
1982         if (!asus_device_present) {
1983                 result = -ENODEV;
1984                 goto fail_no_device;
1985         }
1986         return 0;
1987 
1988 fail_no_device:
1989         acpi_bus_unregister_driver(&asus_acpi_driver);
1990 fail_acpi_driver:
1991         platform_driver_unregister(&platform_driver);
1992         return result;
1993 }
1994 
1995 static void __exit asus_laptop_exit(void)
1996 {
1997         acpi_bus_unregister_driver(&asus_acpi_driver);
1998         platform_driver_unregister(&platform_driver);
1999 }
2000 
2001 module_init(asus_laptop_init);
2002 module_exit(asus_laptop_exit);
2003 

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