Version:  2.0.40 2.2.26 2.4.37 3.3 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

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 show_infos(struct device *dev,
860                           struct device_attribute *attr, 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 
930 static int parse_arg(const char *buf, unsigned long count, int *val)
931 {
932         if (!count)
933                 return 0;
934         if (count > 31)
935                 return -EINVAL;
936         if (sscanf(buf, "%i", val) != 1)
937                 return -EINVAL;
938         return count;
939 }
940 
941 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
942                               const char *buf, size_t count,
943                               const char *method)
944 {
945         int rv, value;
946         int out = 0;
947 
948         rv = parse_arg(buf, count, &value);
949         if (rv > 0)
950                 out = value ? 1 : 0;
951 
952         if (write_acpi_int(asus->handle, method, value))
953                 return -ENODEV;
954         return rv;
955 }
956 
957 /*
958  * LEDD display
959  */
960 static ssize_t show_ledd(struct device *dev,
961                          struct device_attribute *attr, char *buf)
962 {
963         struct asus_laptop *asus = dev_get_drvdata(dev);
964 
965         return sprintf(buf, "0x%08x\n", asus->ledd_status);
966 }
967 
968 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
969                           const char *buf, size_t count)
970 {
971         struct asus_laptop *asus = dev_get_drvdata(dev);
972         int rv, value;
973 
974         rv = parse_arg(buf, count, &value);
975         if (rv > 0) {
976                 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
977                         pr_warn("LED display write failed\n");
978                         return -ENODEV;
979                 }
980                 asus->ledd_status = (u32) value;
981         }
982         return rv;
983 }
984 
985 /*
986  * Wireless
987  */
988 static int asus_wireless_status(struct asus_laptop *asus, int mask)
989 {
990         unsigned long long status;
991         acpi_status rv = AE_OK;
992 
993         if (!asus->have_rsts)
994                 return (asus->wireless_status & mask) ? 1 : 0;
995 
996         rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
997                                    NULL, &status);
998         if (ACPI_FAILURE(rv)) {
999                 pr_warn("Error reading Wireless status\n");
1000                 return -EINVAL;
1001         }
1002         return !!(status & mask);
1003 }
1004 
1005 /*
1006  * WLAN
1007  */
1008 static int asus_wlan_set(struct asus_laptop *asus, int status)
1009 {
1010         if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
1011                 pr_warn("Error setting wlan status to %d\n", status);
1012                 return -EIO;
1013         }
1014         return 0;
1015 }
1016 
1017 static ssize_t show_wlan(struct device *dev,
1018                          struct device_attribute *attr, char *buf)
1019 {
1020         struct asus_laptop *asus = dev_get_drvdata(dev);
1021 
1022         return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1023 }
1024 
1025 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
1026                           const char *buf, size_t count)
1027 {
1028         struct asus_laptop *asus = dev_get_drvdata(dev);
1029 
1030         return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1031 }
1032 
1033 /*e
1034  * Bluetooth
1035  */
1036 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1037 {
1038         if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1039                 pr_warn("Error setting bluetooth status to %d\n", status);
1040                 return -EIO;
1041         }
1042         return 0;
1043 }
1044 
1045 static ssize_t show_bluetooth(struct device *dev,
1046                               struct device_attribute *attr, char *buf)
1047 {
1048         struct asus_laptop *asus = dev_get_drvdata(dev);
1049 
1050         return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1051 }
1052 
1053 static ssize_t store_bluetooth(struct device *dev,
1054                                struct device_attribute *attr, const char *buf,
1055                                size_t count)
1056 {
1057         struct asus_laptop *asus = dev_get_drvdata(dev);
1058 
1059         return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1060 }
1061 
1062 /*
1063  * Wimax
1064  */
1065 static int asus_wimax_set(struct asus_laptop *asus, int status)
1066 {
1067         if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1068                 pr_warn("Error setting wimax status to %d\n", status);
1069                 return -EIO;
1070         }
1071         return 0;
1072 }
1073 
1074 static ssize_t show_wimax(struct device *dev,
1075                               struct device_attribute *attr, char *buf)
1076 {
1077         struct asus_laptop *asus = dev_get_drvdata(dev);
1078 
1079         return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1080 }
1081 
1082 static ssize_t store_wimax(struct device *dev,
1083                                struct device_attribute *attr, const char *buf,
1084                                size_t count)
1085 {
1086         struct asus_laptop *asus = dev_get_drvdata(dev);
1087 
1088         return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1089 }
1090 
1091 /*
1092  * Wwan
1093  */
1094 static int asus_wwan_set(struct asus_laptop *asus, int status)
1095 {
1096         if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1097                 pr_warn("Error setting wwan status to %d\n", status);
1098                 return -EIO;
1099         }
1100         return 0;
1101 }
1102 
1103 static ssize_t show_wwan(struct device *dev,
1104                               struct device_attribute *attr, char *buf)
1105 {
1106         struct asus_laptop *asus = dev_get_drvdata(dev);
1107 
1108         return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1109 }
1110 
1111 static ssize_t store_wwan(struct device *dev,
1112                                struct device_attribute *attr, const char *buf,
1113                                size_t count)
1114 {
1115         struct asus_laptop *asus = dev_get_drvdata(dev);
1116 
1117         return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1118 }
1119 
1120 /*
1121  * Display
1122  */
1123 static void asus_set_display(struct asus_laptop *asus, int value)
1124 {
1125         /* no sanity check needed for now */
1126         if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1127                 pr_warn("Error setting display\n");
1128         return;
1129 }
1130 
1131 /*
1132  * Experimental support for display switching. As of now: 1 should activate
1133  * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1134  * Any combination (bitwise) of these will suffice. I never actually tested 4
1135  * displays hooked up simultaneously, so be warned. See the acpi4asus README
1136  * for more info.
1137  */
1138 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
1139                           const char *buf, size_t count)
1140 {
1141         struct asus_laptop *asus = dev_get_drvdata(dev);
1142         int rv, value;
1143 
1144         rv = parse_arg(buf, count, &value);
1145         if (rv > 0)
1146                 asus_set_display(asus, value);
1147         return rv;
1148 }
1149 
1150 /*
1151  * Light Sens
1152  */
1153 static void asus_als_switch(struct asus_laptop *asus, int value)
1154 {
1155         int ret;
1156 
1157         if (asus->is_pega_lucid) {
1158                 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1159                 if (!ret)
1160                         ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1161         } else {
1162                 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1163         }
1164         if (ret)
1165                 pr_warning("Error setting light sensor switch\n");
1166 
1167         asus->light_switch = value;
1168 }
1169 
1170 static ssize_t show_lssw(struct device *dev,
1171                          struct device_attribute *attr, char *buf)
1172 {
1173         struct asus_laptop *asus = dev_get_drvdata(dev);
1174 
1175         return sprintf(buf, "%d\n", asus->light_switch);
1176 }
1177 
1178 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
1179                           const char *buf, size_t count)
1180 {
1181         struct asus_laptop *asus = dev_get_drvdata(dev);
1182         int rv, value;
1183 
1184         rv = parse_arg(buf, count, &value);
1185         if (rv > 0)
1186                 asus_als_switch(asus, value ? 1 : 0);
1187 
1188         return rv;
1189 }
1190 
1191 static void asus_als_level(struct asus_laptop *asus, int value)
1192 {
1193         if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1194                 pr_warn("Error setting light sensor level\n");
1195         asus->light_level = value;
1196 }
1197 
1198 static ssize_t show_lslvl(struct device *dev,
1199                           struct device_attribute *attr, char *buf)
1200 {
1201         struct asus_laptop *asus = dev_get_drvdata(dev);
1202 
1203         return sprintf(buf, "%d\n", asus->light_level);
1204 }
1205 
1206 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
1207                            const char *buf, size_t count)
1208 {
1209         struct asus_laptop *asus = dev_get_drvdata(dev);
1210         int rv, value;
1211 
1212         rv = parse_arg(buf, count, &value);
1213         if (rv > 0) {
1214                 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1215                 /* 0 <= value <= 15 */
1216                 asus_als_level(asus, value);
1217         }
1218 
1219         return rv;
1220 }
1221 
1222 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1223 {
1224         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1225         int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1226                                      &buffer);
1227         if (!err) {
1228                 union acpi_object *obj = buffer.pointer;
1229                 if (obj && obj->type == ACPI_TYPE_INTEGER)
1230                         *result = obj->integer.value;
1231                 else
1232                         err = -EIO;
1233         }
1234         return err;
1235 }
1236 
1237 static ssize_t show_lsvalue(struct device *dev,
1238                             struct device_attribute *attr, char *buf)
1239 {
1240         struct asus_laptop *asus = dev_get_drvdata(dev);
1241         int err, hi, lo;
1242 
1243         err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1244         if (!err)
1245                 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1246         if (!err)
1247                 return sprintf(buf, "%d\n", 10 * hi + lo);
1248         return err;
1249 }
1250 
1251 /*
1252  * GPS
1253  */
1254 static int asus_gps_status(struct asus_laptop *asus)
1255 {
1256         unsigned long long status;
1257         acpi_status rv = AE_OK;
1258 
1259         rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1260                                    NULL, &status);
1261         if (ACPI_FAILURE(rv)) {
1262                 pr_warn("Error reading GPS status\n");
1263                 return -ENODEV;
1264         }
1265         return !!status;
1266 }
1267 
1268 static int asus_gps_switch(struct asus_laptop *asus, int status)
1269 {
1270         const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1271 
1272         if (write_acpi_int(asus->handle, meth, 0x02))
1273                 return -ENODEV;
1274         return 0;
1275 }
1276 
1277 static ssize_t show_gps(struct device *dev,
1278                         struct device_attribute *attr, char *buf)
1279 {
1280         struct asus_laptop *asus = dev_get_drvdata(dev);
1281 
1282         return sprintf(buf, "%d\n", asus_gps_status(asus));
1283 }
1284 
1285 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1286                          const char *buf, size_t count)
1287 {
1288         struct asus_laptop *asus = dev_get_drvdata(dev);
1289         int rv, value;
1290         int ret;
1291 
1292         rv = parse_arg(buf, count, &value);
1293         if (rv <= 0)
1294                 return -EINVAL;
1295         ret = asus_gps_switch(asus, !!value);
1296         if (ret)
1297                 return ret;
1298         rfkill_set_sw_state(asus->gps.rfkill, !value);
1299         return rv;
1300 }
1301 
1302 /*
1303  * rfkill
1304  */
1305 static int asus_gps_rfkill_set(void *data, bool blocked)
1306 {
1307         struct asus_laptop *asus = data;
1308 
1309         return asus_gps_switch(asus, !blocked);
1310 }
1311 
1312 static const struct rfkill_ops asus_gps_rfkill_ops = {
1313         .set_block = asus_gps_rfkill_set,
1314 };
1315 
1316 static int asus_rfkill_set(void *data, bool blocked)
1317 {
1318         struct asus_rfkill *rfk = data;
1319         struct asus_laptop *asus = rfk->asus;
1320 
1321         if (rfk->control_id == WL_RSTS)
1322                 return asus_wlan_set(asus, !blocked);
1323         else if (rfk->control_id == BT_RSTS)
1324                 return asus_bluetooth_set(asus, !blocked);
1325         else if (rfk->control_id == WM_RSTS)
1326                 return asus_wimax_set(asus, !blocked);
1327         else if (rfk->control_id == WW_RSTS)
1328                 return asus_wwan_set(asus, !blocked);
1329 
1330         return -EINVAL;
1331 }
1332 
1333 static const struct rfkill_ops asus_rfkill_ops = {
1334         .set_block = asus_rfkill_set,
1335 };
1336 
1337 static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1338 {
1339         if (!rfk->rfkill)
1340                 return ;
1341 
1342         rfkill_unregister(rfk->rfkill);
1343         rfkill_destroy(rfk->rfkill);
1344         rfk->rfkill = NULL;
1345 }
1346 
1347 static void asus_rfkill_exit(struct asus_laptop *asus)
1348 {
1349         asus_rfkill_terminate(&asus->wwan);
1350         asus_rfkill_terminate(&asus->bluetooth);
1351         asus_rfkill_terminate(&asus->wlan);
1352         asus_rfkill_terminate(&asus->gps);
1353 }
1354 
1355 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1356                              const char *name, int control_id, int type,
1357                              const struct rfkill_ops *ops)
1358 {
1359         int result;
1360 
1361         rfk->control_id = control_id;
1362         rfk->asus = asus;
1363         rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1364                                    type, ops, rfk);
1365         if (!rfk->rfkill)
1366                 return -EINVAL;
1367 
1368         result = rfkill_register(rfk->rfkill);
1369         if (result) {
1370                 rfkill_destroy(rfk->rfkill);
1371                 rfk->rfkill = NULL;
1372         }
1373 
1374         return result;
1375 }
1376 
1377 static int asus_rfkill_init(struct asus_laptop *asus)
1378 {
1379         int result = 0;
1380 
1381         if (asus->is_pega_lucid)
1382                 return -ENODEV;
1383 
1384         if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1385             !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1386             !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1387                 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1388                                            -1, RFKILL_TYPE_GPS,
1389                                            &asus_gps_rfkill_ops);
1390         if (result)
1391                 goto exit;
1392 
1393 
1394         if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1395             asus->wled_type == TYPE_RFKILL)
1396                 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1397                                            WL_RSTS, RFKILL_TYPE_WLAN,
1398                                            &asus_rfkill_ops);
1399         if (result)
1400                 goto exit;
1401 
1402         if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1403             asus->bled_type == TYPE_RFKILL)
1404                 result = asus_rfkill_setup(asus, &asus->bluetooth,
1405                                            "asus-bluetooth", BT_RSTS,
1406                                            RFKILL_TYPE_BLUETOOTH,
1407                                            &asus_rfkill_ops);
1408         if (result)
1409                 goto exit;
1410 
1411         if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1412                 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1413                                            WW_RSTS, RFKILL_TYPE_WWAN,
1414                                            &asus_rfkill_ops);
1415         if (result)
1416                 goto exit;
1417 
1418         if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1419                 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1420                                            WM_RSTS, RFKILL_TYPE_WIMAX,
1421                                            &asus_rfkill_ops);
1422         if (result)
1423                 goto exit;
1424 
1425 exit:
1426         if (result)
1427                 asus_rfkill_exit(asus);
1428 
1429         return result;
1430 }
1431 
1432 static int pega_rfkill_set(void *data, bool blocked)
1433 {
1434         struct asus_rfkill *rfk = data;
1435 
1436         int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1437         return ret;
1438 }
1439 
1440 static const struct rfkill_ops pega_rfkill_ops = {
1441         .set_block = pega_rfkill_set,
1442 };
1443 
1444 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1445                              const char *name, int controlid, int rfkill_type)
1446 {
1447         return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1448                                  &pega_rfkill_ops);
1449 }
1450 
1451 static int pega_rfkill_init(struct asus_laptop *asus)
1452 {
1453         int ret = 0;
1454 
1455         if(!asus->is_pega_lucid)
1456                 return -ENODEV;
1457 
1458         ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1459                                 PEGA_WLAN, RFKILL_TYPE_WLAN);
1460         if(ret)
1461                 goto exit;
1462 
1463         ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1464                                 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1465         if(ret)
1466                 goto exit;
1467 
1468         ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1469                                 PEGA_WWAN, RFKILL_TYPE_WWAN);
1470 
1471 exit:
1472         if (ret)
1473                 asus_rfkill_exit(asus);
1474 
1475         return ret;
1476 }
1477 
1478 /*
1479  * Input device (i.e. hotkeys)
1480  */
1481 static void asus_input_notify(struct asus_laptop *asus, int event)
1482 {
1483         if (!asus->inputdev)
1484                 return ;
1485         if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1486                 pr_info("Unknown key %x pressed\n", event);
1487 }
1488 
1489 static int asus_input_init(struct asus_laptop *asus)
1490 {
1491         struct input_dev *input;
1492         int error;
1493 
1494         input = input_allocate_device();
1495         if (!input)
1496                 return -ENOMEM;
1497 
1498         input->name = "Asus Laptop extra buttons";
1499         input->phys = ASUS_LAPTOP_FILE "/input0";
1500         input->id.bustype = BUS_HOST;
1501         input->dev.parent = &asus->platform_device->dev;
1502 
1503         error = sparse_keymap_setup(input, asus_keymap, NULL);
1504         if (error) {
1505                 pr_err("Unable to setup input device keymap\n");
1506                 goto err_free_dev;
1507         }
1508         error = input_register_device(input);
1509         if (error) {
1510                 pr_warn("Unable to register input device\n");
1511                 goto err_free_keymap;
1512         }
1513 
1514         asus->inputdev = input;
1515         return 0;
1516 
1517 err_free_keymap:
1518         sparse_keymap_free(input);
1519 err_free_dev:
1520         input_free_device(input);
1521         return error;
1522 }
1523 
1524 static void asus_input_exit(struct asus_laptop *asus)
1525 {
1526         if (asus->inputdev) {
1527                 sparse_keymap_free(asus->inputdev);
1528                 input_unregister_device(asus->inputdev);
1529         }
1530         asus->inputdev = NULL;
1531 }
1532 
1533 /*
1534  * ACPI driver
1535  */
1536 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1537 {
1538         struct asus_laptop *asus = acpi_driver_data(device);
1539         u16 count;
1540 
1541         /* TODO Find a better way to handle events count. */
1542         count = asus->event_count[event % 128]++;
1543         acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1544                                         dev_name(&asus->device->dev), event,
1545                                         count);
1546 
1547         if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1548                 event = ATKD_BRNUP;
1549         else if (event >= ATKD_BRNDOWN_MIN &&
1550                  event <= ATKD_BRNDOWN_MAX)
1551                 event = ATKD_BRNDOWN;
1552 
1553         /* Brightness events are special */
1554         if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1555                 if (asus->backlight_device != NULL) {
1556                         /* Update the backlight device. */
1557                         asus_backlight_notify(asus);
1558                         return ;
1559                 }
1560         }
1561 
1562         /* Accelerometer "coarse orientation change" event */
1563         if (asus->pega_accel_poll && event == 0xEA) {
1564                 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1565                                KOBJ_CHANGE);
1566                 return ;
1567         }
1568 
1569         asus_input_notify(asus, event);
1570 }
1571 
1572 static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
1573 static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
1574 static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR,
1575                    show_bluetooth, store_bluetooth);
1576 static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
1577 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
1578 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
1579 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
1580 static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL);
1581 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
1582 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
1583 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
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;
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_backlight_support()) {
1891                 result = asus_backlight_init(asus);
1892                 if (result)
1893                         goto fail_backlight;
1894         } else
1895                 pr_info("Backlight controlled by ACPI video driver\n");
1896 
1897         result = asus_input_init(asus);
1898         if (result)
1899                 goto fail_input;
1900 
1901         result = asus_led_init(asus);
1902         if (result)
1903                 goto fail_led;
1904 
1905         result = asus_rfkill_init(asus);
1906         if (result && result != -ENODEV)
1907                 goto fail_rfkill;
1908 
1909         result = pega_accel_init(asus);
1910         if (result && result != -ENODEV)
1911                 goto fail_pega_accel;
1912 
1913         result = pega_rfkill_init(asus);
1914         if (result && result != -ENODEV)
1915                 goto fail_pega_rfkill;
1916 
1917         asus_device_present = true;
1918         return 0;
1919 
1920 fail_pega_rfkill:
1921         pega_accel_exit(asus);
1922 fail_pega_accel:
1923         asus_rfkill_exit(asus);
1924 fail_rfkill:
1925         asus_led_exit(asus);
1926 fail_led:
1927         asus_input_exit(asus);
1928 fail_input:
1929         asus_backlight_exit(asus);
1930 fail_backlight:
1931         asus_platform_exit(asus);
1932 fail_platform:
1933         kfree(asus);
1934 
1935         return result;
1936 }
1937 
1938 static int asus_acpi_remove(struct acpi_device *device)
1939 {
1940         struct asus_laptop *asus = acpi_driver_data(device);
1941 
1942         asus_backlight_exit(asus);
1943         asus_rfkill_exit(asus);
1944         asus_led_exit(asus);
1945         asus_input_exit(asus);
1946         pega_accel_exit(asus);
1947         asus_platform_exit(asus);
1948 
1949         kfree(asus->name);
1950         kfree(asus);
1951         return 0;
1952 }
1953 
1954 static const struct acpi_device_id asus_device_ids[] = {
1955         {"ATK0100", 0},
1956         {"ATK0101", 0},
1957         {"", 0},
1958 };
1959 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1960 
1961 static struct acpi_driver asus_acpi_driver = {
1962         .name = ASUS_LAPTOP_NAME,
1963         .class = ASUS_LAPTOP_CLASS,
1964         .owner = THIS_MODULE,
1965         .ids = asus_device_ids,
1966         .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1967         .ops = {
1968                 .add = asus_acpi_add,
1969                 .remove = asus_acpi_remove,
1970                 .notify = asus_acpi_notify,
1971                 },
1972 };
1973 
1974 static int __init asus_laptop_init(void)
1975 {
1976         int result;
1977 
1978         result = platform_driver_register(&platform_driver);
1979         if (result < 0)
1980                 return result;
1981 
1982         result = acpi_bus_register_driver(&asus_acpi_driver);
1983         if (result < 0)
1984                 goto fail_acpi_driver;
1985         if (!asus_device_present) {
1986                 result = -ENODEV;
1987                 goto fail_no_device;
1988         }
1989         return 0;
1990 
1991 fail_no_device:
1992         acpi_bus_unregister_driver(&asus_acpi_driver);
1993 fail_acpi_driver:
1994         platform_driver_unregister(&platform_driver);
1995         return result;
1996 }
1997 
1998 static void __exit asus_laptop_exit(void)
1999 {
2000         acpi_bus_unregister_driver(&asus_acpi_driver);
2001         platform_driver_unregister(&platform_driver);
2002 }
2003 
2004 module_init(asus_laptop_init);
2005 module_exit(asus_laptop_exit);
2006 

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