Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 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

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         if (asus->backlight_device)
847                 backlight_device_unregister(asus->backlight_device);
848         asus->backlight_device = NULL;
849 }
850 
851 /*
852  * Platform device handlers
853  */
854 
855 /*
856  * We write our info in page, we begin at offset off and cannot write more
857  * than count bytes. We set eof to 1 if we handle those 2 values. We return the
858  * number of bytes written in page
859  */
860 static ssize_t show_infos(struct device *dev,
861                           struct device_attribute *attr, char *page)
862 {
863         struct asus_laptop *asus = dev_get_drvdata(dev);
864         int len = 0;
865         unsigned long long temp;
866         char buf[16];           /* enough for all info */
867         acpi_status rv = AE_OK;
868 
869         /*
870          * We use the easy way, we don't care of off and count,
871          * so we don't set eof to 1
872          */
873 
874         len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
875         len += sprintf(page + len, "Model reference    : %s\n", asus->name);
876         /*
877          * The SFUN method probably allows the original driver to get the list
878          * of features supported by a given model. For now, 0x0100 or 0x0800
879          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
880          * The significance of others is yet to be found.
881          */
882         rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
883         if (!ACPI_FAILURE(rv))
884                 len += sprintf(page + len, "SFUN value         : %#x\n",
885                                (uint) temp);
886         /*
887          * The HWRS method return informations about the hardware.
888          * 0x80 bit is for WLAN, 0x100 for Bluetooth.
889          * 0x40 for WWAN, 0x10 for WIMAX.
890          * The significance of others is yet to be found.
891          * We don't currently use this for device detection, and it
892          * takes several seconds to run on some systems.
893          */
894         rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
895         if (!ACPI_FAILURE(rv))
896                 len += sprintf(page + len, "HWRS value         : %#x\n",
897                                (uint) temp);
898         /*
899          * Another value for userspace: the ASYM method returns 0x02 for
900          * battery low and 0x04 for battery critical, its readings tend to be
901          * more accurate than those provided by _BST.
902          * Note: since not all the laptops provide this method, errors are
903          * silently ignored.
904          */
905         rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
906         if (!ACPI_FAILURE(rv))
907                 len += sprintf(page + len, "ASYM value         : %#x\n",
908                                (uint) temp);
909         if (asus->dsdt_info) {
910                 snprintf(buf, 16, "%d", asus->dsdt_info->length);
911                 len += sprintf(page + len, "DSDT length        : %s\n", buf);
912                 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
913                 len += sprintf(page + len, "DSDT checksum      : %s\n", buf);
914                 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
915                 len += sprintf(page + len, "DSDT revision      : %s\n", buf);
916                 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
917                 len += sprintf(page + len, "OEM id             : %s\n", buf);
918                 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
919                 len += sprintf(page + len, "OEM table id       : %s\n", buf);
920                 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
921                 len += sprintf(page + len, "OEM revision       : 0x%s\n", buf);
922                 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
923                 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
924                 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
925                 len += sprintf(page + len, "ASL comp revision  : 0x%s\n", buf);
926         }
927 
928         return len;
929 }
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 show_ledd(struct device *dev,
962                          struct device_attribute *attr, 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 store_ledd(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 
986 /*
987  * Wireless
988  */
989 static int asus_wireless_status(struct asus_laptop *asus, int mask)
990 {
991         unsigned long long status;
992         acpi_status rv = AE_OK;
993 
994         if (!asus->have_rsts)
995                 return (asus->wireless_status & mask) ? 1 : 0;
996 
997         rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
998                                    NULL, &status);
999         if (ACPI_FAILURE(rv)) {
1000                 pr_warn("Error reading Wireless status\n");
1001                 return -EINVAL;
1002         }
1003         return !!(status & mask);
1004 }
1005 
1006 /*
1007  * WLAN
1008  */
1009 static int asus_wlan_set(struct asus_laptop *asus, int status)
1010 {
1011         if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
1012                 pr_warn("Error setting wlan status to %d\n", status);
1013                 return -EIO;
1014         }
1015         return 0;
1016 }
1017 
1018 static ssize_t show_wlan(struct device *dev,
1019                          struct device_attribute *attr, char *buf)
1020 {
1021         struct asus_laptop *asus = dev_get_drvdata(dev);
1022 
1023         return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1024 }
1025 
1026 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
1027                           const char *buf, size_t count)
1028 {
1029         struct asus_laptop *asus = dev_get_drvdata(dev);
1030 
1031         return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1032 }
1033 
1034 /*e
1035  * Bluetooth
1036  */
1037 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1038 {
1039         if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1040                 pr_warn("Error setting bluetooth status to %d\n", status);
1041                 return -EIO;
1042         }
1043         return 0;
1044 }
1045 
1046 static ssize_t show_bluetooth(struct device *dev,
1047                               struct device_attribute *attr, char *buf)
1048 {
1049         struct asus_laptop *asus = dev_get_drvdata(dev);
1050 
1051         return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1052 }
1053 
1054 static ssize_t store_bluetooth(struct device *dev,
1055                                struct device_attribute *attr, const char *buf,
1056                                size_t count)
1057 {
1058         struct asus_laptop *asus = dev_get_drvdata(dev);
1059 
1060         return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1061 }
1062 
1063 /*
1064  * Wimax
1065  */
1066 static int asus_wimax_set(struct asus_laptop *asus, int status)
1067 {
1068         if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1069                 pr_warn("Error setting wimax status to %d\n", status);
1070                 return -EIO;
1071         }
1072         return 0;
1073 }
1074 
1075 static ssize_t show_wimax(struct device *dev,
1076                               struct device_attribute *attr, char *buf)
1077 {
1078         struct asus_laptop *asus = dev_get_drvdata(dev);
1079 
1080         return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1081 }
1082 
1083 static ssize_t store_wimax(struct device *dev,
1084                                struct device_attribute *attr, const char *buf,
1085                                size_t count)
1086 {
1087         struct asus_laptop *asus = dev_get_drvdata(dev);
1088 
1089         return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1090 }
1091 
1092 /*
1093  * Wwan
1094  */
1095 static int asus_wwan_set(struct asus_laptop *asus, int status)
1096 {
1097         if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1098                 pr_warn("Error setting wwan status to %d\n", status);
1099                 return -EIO;
1100         }
1101         return 0;
1102 }
1103 
1104 static ssize_t show_wwan(struct device *dev,
1105                               struct device_attribute *attr, char *buf)
1106 {
1107         struct asus_laptop *asus = dev_get_drvdata(dev);
1108 
1109         return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1110 }
1111 
1112 static ssize_t store_wwan(struct device *dev,
1113                                struct device_attribute *attr, const char *buf,
1114                                size_t count)
1115 {
1116         struct asus_laptop *asus = dev_get_drvdata(dev);
1117 
1118         return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1119 }
1120 
1121 /*
1122  * Display
1123  */
1124 static void asus_set_display(struct asus_laptop *asus, int value)
1125 {
1126         /* no sanity check needed for now */
1127         if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1128                 pr_warn("Error setting display\n");
1129         return;
1130 }
1131 
1132 /*
1133  * Experimental support for display switching. As of now: 1 should activate
1134  * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1135  * Any combination (bitwise) of these will suffice. I never actually tested 4
1136  * displays hooked up simultaneously, so be warned. See the acpi4asus README
1137  * for more info.
1138  */
1139 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
1140                           const char *buf, size_t count)
1141 {
1142         struct asus_laptop *asus = dev_get_drvdata(dev);
1143         int rv, value;
1144 
1145         rv = parse_arg(buf, count, &value);
1146         if (rv > 0)
1147                 asus_set_display(asus, value);
1148         return rv;
1149 }
1150 
1151 /*
1152  * Light Sens
1153  */
1154 static void asus_als_switch(struct asus_laptop *asus, int value)
1155 {
1156         int ret;
1157 
1158         if (asus->is_pega_lucid) {
1159                 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1160                 if (!ret)
1161                         ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1162         } else {
1163                 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1164         }
1165         if (ret)
1166                 pr_warning("Error setting light sensor switch\n");
1167 
1168         asus->light_switch = value;
1169 }
1170 
1171 static ssize_t show_lssw(struct device *dev,
1172                          struct device_attribute *attr, char *buf)
1173 {
1174         struct asus_laptop *asus = dev_get_drvdata(dev);
1175 
1176         return sprintf(buf, "%d\n", asus->light_switch);
1177 }
1178 
1179 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
1180                           const char *buf, size_t count)
1181 {
1182         struct asus_laptop *asus = dev_get_drvdata(dev);
1183         int rv, value;
1184 
1185         rv = parse_arg(buf, count, &value);
1186         if (rv > 0)
1187                 asus_als_switch(asus, value ? 1 : 0);
1188 
1189         return rv;
1190 }
1191 
1192 static void asus_als_level(struct asus_laptop *asus, int value)
1193 {
1194         if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1195                 pr_warn("Error setting light sensor level\n");
1196         asus->light_level = value;
1197 }
1198 
1199 static ssize_t show_lslvl(struct device *dev,
1200                           struct device_attribute *attr, char *buf)
1201 {
1202         struct asus_laptop *asus = dev_get_drvdata(dev);
1203 
1204         return sprintf(buf, "%d\n", asus->light_level);
1205 }
1206 
1207 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
1208                            const char *buf, size_t count)
1209 {
1210         struct asus_laptop *asus = dev_get_drvdata(dev);
1211         int rv, value;
1212 
1213         rv = parse_arg(buf, count, &value);
1214         if (rv > 0) {
1215                 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1216                 /* 0 <= value <= 15 */
1217                 asus_als_level(asus, value);
1218         }
1219 
1220         return rv;
1221 }
1222 
1223 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1224 {
1225         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1226         int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1227                                      &buffer);
1228         if (!err) {
1229                 union acpi_object *obj = buffer.pointer;
1230                 if (obj && obj->type == ACPI_TYPE_INTEGER)
1231                         *result = obj->integer.value;
1232                 else
1233                         err = -EIO;
1234         }
1235         return err;
1236 }
1237 
1238 static ssize_t show_lsvalue(struct device *dev,
1239                             struct device_attribute *attr, char *buf)
1240 {
1241         struct asus_laptop *asus = dev_get_drvdata(dev);
1242         int err, hi, lo;
1243 
1244         err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1245         if (!err)
1246                 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1247         if (!err)
1248                 return sprintf(buf, "%d\n", 10 * hi + lo);
1249         return err;
1250 }
1251 
1252 /*
1253  * GPS
1254  */
1255 static int asus_gps_status(struct asus_laptop *asus)
1256 {
1257         unsigned long long status;
1258         acpi_status rv = AE_OK;
1259 
1260         rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1261                                    NULL, &status);
1262         if (ACPI_FAILURE(rv)) {
1263                 pr_warn("Error reading GPS status\n");
1264                 return -ENODEV;
1265         }
1266         return !!status;
1267 }
1268 
1269 static int asus_gps_switch(struct asus_laptop *asus, int status)
1270 {
1271         const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1272 
1273         if (write_acpi_int(asus->handle, meth, 0x02))
1274                 return -ENODEV;
1275         return 0;
1276 }
1277 
1278 static ssize_t show_gps(struct device *dev,
1279                         struct device_attribute *attr, char *buf)
1280 {
1281         struct asus_laptop *asus = dev_get_drvdata(dev);
1282 
1283         return sprintf(buf, "%d\n", asus_gps_status(asus));
1284 }
1285 
1286 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1287                          const char *buf, size_t count)
1288 {
1289         struct asus_laptop *asus = dev_get_drvdata(dev);
1290         int rv, value;
1291         int ret;
1292 
1293         rv = parse_arg(buf, count, &value);
1294         if (rv <= 0)
1295                 return -EINVAL;
1296         ret = asus_gps_switch(asus, !!value);
1297         if (ret)
1298                 return ret;
1299         rfkill_set_sw_state(asus->gps.rfkill, !value);
1300         return rv;
1301 }
1302 
1303 /*
1304  * rfkill
1305  */
1306 static int asus_gps_rfkill_set(void *data, bool blocked)
1307 {
1308         struct asus_laptop *asus = data;
1309 
1310         return asus_gps_switch(asus, !blocked);
1311 }
1312 
1313 static const struct rfkill_ops asus_gps_rfkill_ops = {
1314         .set_block = asus_gps_rfkill_set,
1315 };
1316 
1317 static int asus_rfkill_set(void *data, bool blocked)
1318 {
1319         struct asus_rfkill *rfk = data;
1320         struct asus_laptop *asus = rfk->asus;
1321 
1322         if (rfk->control_id == WL_RSTS)
1323                 return asus_wlan_set(asus, !blocked);
1324         else if (rfk->control_id == BT_RSTS)
1325                 return asus_bluetooth_set(asus, !blocked);
1326         else if (rfk->control_id == WM_RSTS)
1327                 return asus_wimax_set(asus, !blocked);
1328         else if (rfk->control_id == WW_RSTS)
1329                 return asus_wwan_set(asus, !blocked);
1330 
1331         return -EINVAL;
1332 }
1333 
1334 static const struct rfkill_ops asus_rfkill_ops = {
1335         .set_block = asus_rfkill_set,
1336 };
1337 
1338 static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1339 {
1340         if (!rfk->rfkill)
1341                 return ;
1342 
1343         rfkill_unregister(rfk->rfkill);
1344         rfkill_destroy(rfk->rfkill);
1345         rfk->rfkill = NULL;
1346 }
1347 
1348 static void asus_rfkill_exit(struct asus_laptop *asus)
1349 {
1350         asus_rfkill_terminate(&asus->wwan);
1351         asus_rfkill_terminate(&asus->bluetooth);
1352         asus_rfkill_terminate(&asus->wlan);
1353         asus_rfkill_terminate(&asus->gps);
1354 }
1355 
1356 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1357                              const char *name, int control_id, int type,
1358                              const struct rfkill_ops *ops)
1359 {
1360         int result;
1361 
1362         rfk->control_id = control_id;
1363         rfk->asus = asus;
1364         rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1365                                    type, ops, rfk);
1366         if (!rfk->rfkill)
1367                 return -EINVAL;
1368 
1369         result = rfkill_register(rfk->rfkill);
1370         if (result) {
1371                 rfkill_destroy(rfk->rfkill);
1372                 rfk->rfkill = NULL;
1373         }
1374 
1375         return result;
1376 }
1377 
1378 static int asus_rfkill_init(struct asus_laptop *asus)
1379 {
1380         int result = 0;
1381 
1382         if (asus->is_pega_lucid)
1383                 return -ENODEV;
1384 
1385         if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1386             !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1387             !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1388                 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1389                                            -1, RFKILL_TYPE_GPS,
1390                                            &asus_gps_rfkill_ops);
1391         if (result)
1392                 goto exit;
1393 
1394 
1395         if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1396             asus->wled_type == TYPE_RFKILL)
1397                 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1398                                            WL_RSTS, RFKILL_TYPE_WLAN,
1399                                            &asus_rfkill_ops);
1400         if (result)
1401                 goto exit;
1402 
1403         if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1404             asus->bled_type == TYPE_RFKILL)
1405                 result = asus_rfkill_setup(asus, &asus->bluetooth,
1406                                            "asus-bluetooth", BT_RSTS,
1407                                            RFKILL_TYPE_BLUETOOTH,
1408                                            &asus_rfkill_ops);
1409         if (result)
1410                 goto exit;
1411 
1412         if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1413                 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1414                                            WW_RSTS, RFKILL_TYPE_WWAN,
1415                                            &asus_rfkill_ops);
1416         if (result)
1417                 goto exit;
1418 
1419         if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1420                 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1421                                            WM_RSTS, RFKILL_TYPE_WIMAX,
1422                                            &asus_rfkill_ops);
1423         if (result)
1424                 goto exit;
1425 
1426 exit:
1427         if (result)
1428                 asus_rfkill_exit(asus);
1429 
1430         return result;
1431 }
1432 
1433 static int pega_rfkill_set(void *data, bool blocked)
1434 {
1435         struct asus_rfkill *rfk = data;
1436 
1437         int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1438         return ret;
1439 }
1440 
1441 static const struct rfkill_ops pega_rfkill_ops = {
1442         .set_block = pega_rfkill_set,
1443 };
1444 
1445 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1446                              const char *name, int controlid, int rfkill_type)
1447 {
1448         return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1449                                  &pega_rfkill_ops);
1450 }
1451 
1452 static int pega_rfkill_init(struct asus_laptop *asus)
1453 {
1454         int ret = 0;
1455 
1456         if(!asus->is_pega_lucid)
1457                 return -ENODEV;
1458 
1459         ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1460                                 PEGA_WLAN, RFKILL_TYPE_WLAN);
1461         if(ret)
1462                 goto exit;
1463 
1464         ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1465                                 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1466         if(ret)
1467                 goto exit;
1468 
1469         ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1470                                 PEGA_WWAN, RFKILL_TYPE_WWAN);
1471 
1472 exit:
1473         if (ret)
1474                 asus_rfkill_exit(asus);
1475 
1476         return ret;
1477 }
1478 
1479 /*
1480  * Input device (i.e. hotkeys)
1481  */
1482 static void asus_input_notify(struct asus_laptop *asus, int event)
1483 {
1484         if (!asus->inputdev)
1485                 return ;
1486         if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1487                 pr_info("Unknown key %x pressed\n", event);
1488 }
1489 
1490 static int asus_input_init(struct asus_laptop *asus)
1491 {
1492         struct input_dev *input;
1493         int error;
1494 
1495         input = input_allocate_device();
1496         if (!input)
1497                 return -ENOMEM;
1498 
1499         input->name = "Asus Laptop extra buttons";
1500         input->phys = ASUS_LAPTOP_FILE "/input0";
1501         input->id.bustype = BUS_HOST;
1502         input->dev.parent = &asus->platform_device->dev;
1503 
1504         error = sparse_keymap_setup(input, asus_keymap, NULL);
1505         if (error) {
1506                 pr_err("Unable to setup input device keymap\n");
1507                 goto err_free_dev;
1508         }
1509         error = input_register_device(input);
1510         if (error) {
1511                 pr_warn("Unable to register input device\n");
1512                 goto err_free_keymap;
1513         }
1514 
1515         asus->inputdev = input;
1516         return 0;
1517 
1518 err_free_keymap:
1519         sparse_keymap_free(input);
1520 err_free_dev:
1521         input_free_device(input);
1522         return error;
1523 }
1524 
1525 static void asus_input_exit(struct asus_laptop *asus)
1526 {
1527         if (asus->inputdev) {
1528                 sparse_keymap_free(asus->inputdev);
1529                 input_unregister_device(asus->inputdev);
1530         }
1531         asus->inputdev = NULL;
1532 }
1533 
1534 /*
1535  * ACPI driver
1536  */
1537 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1538 {
1539         struct asus_laptop *asus = acpi_driver_data(device);
1540         u16 count;
1541 
1542         /* TODO Find a better way to handle events count. */
1543         count = asus->event_count[event % 128]++;
1544         acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1545                                         dev_name(&asus->device->dev), event,
1546                                         count);
1547 
1548         if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1549                 event = ATKD_BRNUP;
1550         else if (event >= ATKD_BRNDOWN_MIN &&
1551                  event <= ATKD_BRNDOWN_MAX)
1552                 event = ATKD_BRNDOWN;
1553 
1554         /* Brightness events are special */
1555         if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1556                 if (asus->backlight_device != NULL) {
1557                         /* Update the backlight device. */
1558                         asus_backlight_notify(asus);
1559                         return ;
1560                 }
1561         }
1562 
1563         /* Accelerometer "coarse orientation change" event */
1564         if (asus->pega_accel_poll && event == 0xEA) {
1565                 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1566                                KOBJ_CHANGE);
1567                 return ;
1568         }
1569 
1570         asus_input_notify(asus, event);
1571 }
1572 
1573 static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
1574 static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
1575 static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR,
1576                    show_bluetooth, store_bluetooth);
1577 static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
1578 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
1579 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
1580 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
1581 static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL);
1582 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
1583 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
1584 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
1585 
1586 static struct attribute *asus_attributes[] = {
1587         &dev_attr_infos.attr,
1588         &dev_attr_wlan.attr,
1589         &dev_attr_bluetooth.attr,
1590         &dev_attr_wimax.attr,
1591         &dev_attr_wwan.attr,
1592         &dev_attr_display.attr,
1593         &dev_attr_ledd.attr,
1594         &dev_attr_ls_value.attr,
1595         &dev_attr_ls_level.attr,
1596         &dev_attr_ls_switch.attr,
1597         &dev_attr_gps.attr,
1598         NULL
1599 };
1600 
1601 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1602                                     struct attribute *attr,
1603                                     int idx)
1604 {
1605         struct device *dev = container_of(kobj, struct device, kobj);
1606         struct platform_device *pdev = to_platform_device(dev);
1607         struct asus_laptop *asus = platform_get_drvdata(pdev);
1608         acpi_handle handle = asus->handle;
1609         bool supported;
1610 
1611         if (asus->is_pega_lucid) {
1612                 /* no ls_level interface on the Lucid */
1613                 if (attr == &dev_attr_ls_switch.attr)
1614                         supported = true;
1615                 else if (attr == &dev_attr_ls_level.attr)
1616                         supported = false;
1617                 else
1618                         goto normal;
1619 
1620                 return supported;
1621         }
1622 
1623 normal:
1624         if (attr == &dev_attr_wlan.attr) {
1625                 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1626 
1627         } else if (attr == &dev_attr_bluetooth.attr) {
1628                 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1629 
1630         } else if (attr == &dev_attr_display.attr) {
1631                 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1632 
1633         } else if (attr == &dev_attr_wimax.attr) {
1634                 supported =
1635                         !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1636 
1637         } else if (attr == &dev_attr_wwan.attr) {
1638                 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1639 
1640         } else if (attr == &dev_attr_ledd.attr) {
1641                 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1642 
1643         } else if (attr == &dev_attr_ls_switch.attr ||
1644                    attr == &dev_attr_ls_level.attr) {
1645                 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1646                         !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1647         } else if (attr == &dev_attr_ls_value.attr) {
1648                 supported = asus->is_pega_lucid;
1649         } else if (attr == &dev_attr_gps.attr) {
1650                 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1651                             !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1652                             !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1653         } else {
1654                 supported = true;
1655         }
1656 
1657         return supported ? attr->mode : 0;
1658 }
1659 
1660 
1661 static const struct attribute_group asus_attr_group = {
1662         .is_visible     = asus_sysfs_is_visible,
1663         .attrs          = asus_attributes,
1664 };
1665 
1666 static int asus_platform_init(struct asus_laptop *asus)
1667 {
1668         int result;
1669 
1670         asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1671         if (!asus->platform_device)
1672                 return -ENOMEM;
1673         platform_set_drvdata(asus->platform_device, asus);
1674 
1675         result = platform_device_add(asus->platform_device);
1676         if (result)
1677                 goto fail_platform_device;
1678 
1679         result = sysfs_create_group(&asus->platform_device->dev.kobj,
1680                                     &asus_attr_group);
1681         if (result)
1682                 goto fail_sysfs;
1683 
1684         return 0;
1685 
1686 fail_sysfs:
1687         platform_device_del(asus->platform_device);
1688 fail_platform_device:
1689         platform_device_put(asus->platform_device);
1690         return result;
1691 }
1692 
1693 static void asus_platform_exit(struct asus_laptop *asus)
1694 {
1695         sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1696         platform_device_unregister(asus->platform_device);
1697 }
1698 
1699 static struct platform_driver platform_driver = {
1700         .driver = {
1701                 .name = ASUS_LAPTOP_FILE,
1702                 .owner = THIS_MODULE,
1703         },
1704 };
1705 
1706 /*
1707  * This function is used to initialize the context with right values. In this
1708  * method, we can make all the detection we want, and modify the asus_laptop
1709  * struct
1710  */
1711 static int asus_laptop_get_info(struct asus_laptop *asus)
1712 {
1713         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1714         union acpi_object *model = NULL;
1715         unsigned long long bsts_result;
1716         char *string = NULL;
1717         acpi_status status;
1718 
1719         /*
1720          * Get DSDT headers early enough to allow for differentiating between
1721          * models, but late enough to allow acpi_bus_register_driver() to fail
1722          * before doing anything ACPI-specific. Should we encounter a machine,
1723          * which needs special handling (i.e. its hotkey device has a different
1724          * HID), this bit will be moved.
1725          */
1726         status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1727         if (ACPI_FAILURE(status))
1728                 pr_warn("Couldn't get the DSDT table header\n");
1729 
1730         /* We have to write 0 on init this far for all ASUS models */
1731         if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1732                 pr_err("Hotkey initialization failed\n");
1733                 return -ENODEV;
1734         }
1735 
1736         /* This needs to be called for some laptops to init properly */
1737         status =
1738             acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1739         if (ACPI_FAILURE(status))
1740                 pr_warn("Error calling BSTS\n");
1741         else if (bsts_result)
1742                 pr_notice("BSTS called, 0x%02x returned\n",
1743                        (uint) bsts_result);
1744 
1745         /* This too ... */
1746         if (write_acpi_int(asus->handle, "CWAP", wapf))
1747                 pr_err("Error calling CWAP(%d)\n", wapf);
1748         /*
1749          * Try to match the object returned by INIT to the specific model.
1750          * Handle every possible object (or the lack of thereof) the DSDT
1751          * writers might throw at us. When in trouble, we pass NULL to
1752          * asus_model_match() and try something completely different.
1753          */
1754         if (buffer.pointer) {
1755                 model = buffer.pointer;
1756                 switch (model->type) {
1757                 case ACPI_TYPE_STRING:
1758                         string = model->string.pointer;
1759                         break;
1760                 case ACPI_TYPE_BUFFER:
1761                         string = model->buffer.pointer;
1762                         break;
1763                 default:
1764                         string = "";
1765                         break;
1766                 }
1767         }
1768         asus->name = kstrdup(string, GFP_KERNEL);
1769         if (!asus->name) {
1770                 kfree(buffer.pointer);
1771                 return -ENOMEM;
1772         }
1773 
1774         if (string)
1775                 pr_notice("  %s model detected\n", string);
1776 
1777         if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1778                 asus->have_rsts = true;
1779 
1780         kfree(model);
1781 
1782         return AE_OK;
1783 }
1784 
1785 static int asus_acpi_init(struct asus_laptop *asus)
1786 {
1787         int result = 0;
1788 
1789         result = acpi_bus_get_status(asus->device);
1790         if (result)
1791                 return result;
1792         if (!asus->device->status.present) {
1793                 pr_err("Hotkey device not present, aborting\n");
1794                 return -ENODEV;
1795         }
1796 
1797         result = asus_laptop_get_info(asus);
1798         if (result)
1799                 return result;
1800 
1801         if (!strcmp(bled_type, "led"))
1802                 asus->bled_type = TYPE_LED;
1803         else if (!strcmp(bled_type, "rfkill"))
1804                 asus->bled_type = TYPE_RFKILL;
1805 
1806         if (!strcmp(wled_type, "led"))
1807                 asus->wled_type = TYPE_LED;
1808         else if (!strcmp(wled_type, "rfkill"))
1809                 asus->wled_type = TYPE_RFKILL;
1810 
1811         if (bluetooth_status >= 0)
1812                 asus_bluetooth_set(asus, !!bluetooth_status);
1813 
1814         if (wlan_status >= 0)
1815                 asus_wlan_set(asus, !!wlan_status);
1816 
1817         if (wimax_status >= 0)
1818                 asus_wimax_set(asus, !!wimax_status);
1819 
1820         if (wwan_status >= 0)
1821                 asus_wwan_set(asus, !!wwan_status);
1822 
1823         /* Keyboard Backlight is on by default */
1824         if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1825                 asus_kled_set(asus, 1);
1826 
1827         /* LED display is off by default */
1828         asus->ledd_status = 0xFFF;
1829 
1830         /* Set initial values of light sensor and level */
1831         asus->light_switch = !!als_status;
1832         asus->light_level = 5;  /* level 5 for sensor sensitivity */
1833 
1834         if (asus->is_pega_lucid) {
1835                 asus_als_switch(asus, asus->light_switch);
1836         } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1837                    !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1838                 asus_als_switch(asus, asus->light_switch);
1839                 asus_als_level(asus, asus->light_level);
1840         }
1841 
1842         return result;
1843 }
1844 
1845 static void asus_dmi_check(void)
1846 {
1847         const char *model;
1848 
1849         model = dmi_get_system_info(DMI_PRODUCT_NAME);
1850         if (!model)
1851                 return;
1852 
1853         /* On L1400B WLED control the sound card, don't mess with it ... */
1854         if (strncmp(model, "L1400B", 6) == 0) {
1855                 wlan_status = -1;
1856         }
1857 }
1858 
1859 static bool asus_device_present;
1860 
1861 static int asus_acpi_add(struct acpi_device *device)
1862 {
1863         struct asus_laptop *asus;
1864         int result;
1865 
1866         pr_notice("Asus Laptop Support version %s\n",
1867                   ASUS_LAPTOP_VERSION);
1868         asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1869         if (!asus)
1870                 return -ENOMEM;
1871         asus->handle = device->handle;
1872         strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1873         strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1874         device->driver_data = asus;
1875         asus->device = device;
1876 
1877         asus_dmi_check();
1878 
1879         result = asus_acpi_init(asus);
1880         if (result)
1881                 goto fail_platform;
1882 
1883         /*
1884          * Need platform type detection first, then the platform
1885          * device.  It is used as a parent for the sub-devices below.
1886          */
1887         asus->is_pega_lucid = asus_check_pega_lucid(asus);
1888         result = asus_platform_init(asus);
1889         if (result)
1890                 goto fail_platform;
1891 
1892         if (!acpi_video_backlight_support()) {
1893                 result = asus_backlight_init(asus);
1894                 if (result)
1895                         goto fail_backlight;
1896         } else
1897                 pr_info("Backlight controlled by ACPI video driver\n");
1898 
1899         result = asus_input_init(asus);
1900         if (result)
1901                 goto fail_input;
1902 
1903         result = asus_led_init(asus);
1904         if (result)
1905                 goto fail_led;
1906 
1907         result = asus_rfkill_init(asus);
1908         if (result && result != -ENODEV)
1909                 goto fail_rfkill;
1910 
1911         result = pega_accel_init(asus);
1912         if (result && result != -ENODEV)
1913                 goto fail_pega_accel;
1914 
1915         result = pega_rfkill_init(asus);
1916         if (result && result != -ENODEV)
1917                 goto fail_pega_rfkill;
1918 
1919         asus_device_present = true;
1920         return 0;
1921 
1922 fail_pega_rfkill:
1923         pega_accel_exit(asus);
1924 fail_pega_accel:
1925         asus_rfkill_exit(asus);
1926 fail_rfkill:
1927         asus_led_exit(asus);
1928 fail_led:
1929         asus_input_exit(asus);
1930 fail_input:
1931         asus_backlight_exit(asus);
1932 fail_backlight:
1933         asus_platform_exit(asus);
1934 fail_platform:
1935         kfree(asus);
1936 
1937         return result;
1938 }
1939 
1940 static int asus_acpi_remove(struct acpi_device *device)
1941 {
1942         struct asus_laptop *asus = acpi_driver_data(device);
1943 
1944         asus_backlight_exit(asus);
1945         asus_rfkill_exit(asus);
1946         asus_led_exit(asus);
1947         asus_input_exit(asus);
1948         pega_accel_exit(asus);
1949         asus_platform_exit(asus);
1950 
1951         kfree(asus->name);
1952         kfree(asus);
1953         return 0;
1954 }
1955 
1956 static const struct acpi_device_id asus_device_ids[] = {
1957         {"ATK0100", 0},
1958         {"ATK0101", 0},
1959         {"", 0},
1960 };
1961 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1962 
1963 static struct acpi_driver asus_acpi_driver = {
1964         .name = ASUS_LAPTOP_NAME,
1965         .class = ASUS_LAPTOP_CLASS,
1966         .owner = THIS_MODULE,
1967         .ids = asus_device_ids,
1968         .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1969         .ops = {
1970                 .add = asus_acpi_add,
1971                 .remove = asus_acpi_remove,
1972                 .notify = asus_acpi_notify,
1973                 },
1974 };
1975 
1976 static int __init asus_laptop_init(void)
1977 {
1978         int result;
1979 
1980         result = platform_driver_register(&platform_driver);
1981         if (result < 0)
1982                 return result;
1983 
1984         result = acpi_bus_register_driver(&asus_acpi_driver);
1985         if (result < 0)
1986                 goto fail_acpi_driver;
1987         if (!asus_device_present) {
1988                 result = -ENODEV;
1989                 goto fail_no_device;
1990         }
1991         return 0;
1992 
1993 fail_no_device:
1994         acpi_bus_unregister_driver(&asus_acpi_driver);
1995 fail_acpi_driver:
1996         platform_driver_unregister(&platform_driver);
1997         return result;
1998 }
1999 
2000 static void __exit asus_laptop_exit(void)
2001 {
2002         acpi_bus_unregister_driver(&asus_acpi_driver);
2003         platform_driver_unregister(&platform_driver);
2004 }
2005 
2006 module_init(asus_laptop_init);
2007 module_exit(asus_laptop_exit);
2008 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us