9441cce636e67fa35a8a1aceed38ea1105d9b8fa
[muen/linux.git] / drivers / platform / x86 / asus-wmi.c
1 /*
2  * Asus PC WMI hotkey driver
3  *
4  * Copyright(C) 2010 Intel Corporation.
5  * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
6  *
7  * Portions based on wistron_btns.c:
8  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11  *
12  *  This program is free software; you can redistribute it and/or modify
13  *  it under the terms of the GNU General Public License as published by
14  *  the Free Software Foundation; either version 2 of the License, or
15  *  (at your option) any later version.
16  *
17  *  This program is distributed in the hope that it will be useful,
18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *  GNU General Public License for more details.
21  *
22  *  You should have received a copy of the GNU General Public License
23  *  along with this program; if not, write to the Free Software
24  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
25  */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/fb.h>
37 #include <linux/backlight.h>
38 #include <linux/leds.h>
39 #include <linux/rfkill.h>
40 #include <linux/pci.h>
41 #include <linux/pci_hotplug.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/platform_device.h>
47 #include <linux/thermal.h>
48 #include <linux/acpi.h>
49 #include <linux/dmi.h>
50 #include <acpi/video.h>
51
52 #include "asus-wmi.h"
53
54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55               "Yong Wang <yong.y.wang@intel.com>");
56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
57 MODULE_LICENSE("GPL");
58
59 #define to_asus_wmi_driver(pdrv)                                        \
60         (container_of((pdrv), struct asus_wmi_driver, platform_driver))
61
62 #define ASUS_WMI_MGMT_GUID      "97845ED0-4E6D-11DE-8A39-0800200C9A66"
63
64 #define NOTIFY_BRNUP_MIN                0x11
65 #define NOTIFY_BRNUP_MAX                0x1f
66 #define NOTIFY_BRNDOWN_MIN              0x20
67 #define NOTIFY_BRNDOWN_MAX              0x2e
68 #define NOTIFY_KBD_BRTUP                0xc4
69 #define NOTIFY_KBD_BRTDWN               0xc5
70 #define NOTIFY_KBD_BRTTOGGLE            0xc7
71
72 /* WMI Methods */
73 #define ASUS_WMI_METHODID_SPEC          0x43455053 /* BIOS SPECification */
74 #define ASUS_WMI_METHODID_SFBD          0x44424653 /* Set First Boot Device */
75 #define ASUS_WMI_METHODID_GLCD          0x44434C47 /* Get LCD status */
76 #define ASUS_WMI_METHODID_GPID          0x44495047 /* Get Panel ID?? (Resol) */
77 #define ASUS_WMI_METHODID_QMOD          0x444F4D51 /* Quiet MODe */
78 #define ASUS_WMI_METHODID_SPLV          0x4C425053 /* Set Panel Light Value */
79 #define ASUS_WMI_METHODID_AGFN          0x4E464741 /* FaN? */
80 #define ASUS_WMI_METHODID_SFUN          0x4E554653 /* FUNCtionalities */
81 #define ASUS_WMI_METHODID_SDSP          0x50534453 /* Set DiSPlay output */
82 #define ASUS_WMI_METHODID_GDSP          0x50534447 /* Get DiSPlay output */
83 #define ASUS_WMI_METHODID_DEVP          0x50564544 /* DEVice Policy */
84 #define ASUS_WMI_METHODID_OSVR          0x5256534F /* OS VeRsion */
85 #define ASUS_WMI_METHODID_DSTS          0x53544344 /* Device STatuS */
86 #define ASUS_WMI_METHODID_DSTS2         0x53545344 /* Device STatuS #2*/
87 #define ASUS_WMI_METHODID_BSTS          0x53545342 /* Bios STatuS ? */
88 #define ASUS_WMI_METHODID_DEVS          0x53564544 /* DEVice Set */
89 #define ASUS_WMI_METHODID_CFVS          0x53564643 /* CPU Frequency Volt Set */
90 #define ASUS_WMI_METHODID_KBFT          0x5446424B /* KeyBoard FilTer */
91 #define ASUS_WMI_METHODID_INIT          0x54494E49 /* INITialize */
92 #define ASUS_WMI_METHODID_HKEY          0x59454B48 /* Hot KEY ?? */
93
94 #define ASUS_WMI_UNSUPPORTED_METHOD     0xFFFFFFFE
95
96 /* Wireless */
97 #define ASUS_WMI_DEVID_HW_SWITCH        0x00010001
98 #define ASUS_WMI_DEVID_WIRELESS_LED     0x00010002
99 #define ASUS_WMI_DEVID_CWAP             0x00010003
100 #define ASUS_WMI_DEVID_WLAN             0x00010011
101 #define ASUS_WMI_DEVID_WLAN_LED         0x00010012
102 #define ASUS_WMI_DEVID_BLUETOOTH        0x00010013
103 #define ASUS_WMI_DEVID_GPS              0x00010015
104 #define ASUS_WMI_DEVID_WIMAX            0x00010017
105 #define ASUS_WMI_DEVID_WWAN3G           0x00010019
106 #define ASUS_WMI_DEVID_UWB              0x00010021
107
108 /* Leds */
109 /* 0x000200XX and 0x000400XX */
110 #define ASUS_WMI_DEVID_LED1             0x00020011
111 #define ASUS_WMI_DEVID_LED2             0x00020012
112 #define ASUS_WMI_DEVID_LED3             0x00020013
113 #define ASUS_WMI_DEVID_LED4             0x00020014
114 #define ASUS_WMI_DEVID_LED5             0x00020015
115 #define ASUS_WMI_DEVID_LED6             0x00020016
116
117 /* Backlight and Brightness */
118 #define ASUS_WMI_DEVID_ALS_ENABLE       0x00050001 /* Ambient Light Sensor */
119 #define ASUS_WMI_DEVID_BACKLIGHT        0x00050011
120 #define ASUS_WMI_DEVID_BRIGHTNESS       0x00050012
121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT    0x00050021
122 #define ASUS_WMI_DEVID_LIGHT_SENSOR     0x00050022 /* ?? */
123 #define ASUS_WMI_DEVID_LIGHTBAR         0x00050025
124
125 /* Misc */
126 #define ASUS_WMI_DEVID_CAMERA           0x00060013
127
128 /* Storage */
129 #define ASUS_WMI_DEVID_CARDREADER       0x00080013
130
131 /* Input */
132 #define ASUS_WMI_DEVID_TOUCHPAD         0x00100011
133 #define ASUS_WMI_DEVID_TOUCHPAD_LED     0x00100012
134
135 /* Fan, Thermal */
136 #define ASUS_WMI_DEVID_THERMAL_CTRL     0x00110011
137 #define ASUS_WMI_DEVID_FAN_CTRL         0x00110012
138
139 /* Power */
140 #define ASUS_WMI_DEVID_PROCESSOR_STATE  0x00120012
141
142 /* Deep S3 / Resume on LID open */
143 #define ASUS_WMI_DEVID_LID_RESUME       0x00120031
144
145 /* DSTS masks */
146 #define ASUS_WMI_DSTS_STATUS_BIT        0x00000001
147 #define ASUS_WMI_DSTS_UNKNOWN_BIT       0x00000002
148 #define ASUS_WMI_DSTS_PRESENCE_BIT      0x00010000
149 #define ASUS_WMI_DSTS_USER_BIT          0x00020000
150 #define ASUS_WMI_DSTS_BIOS_BIT          0x00040000
151 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK   0x000000FF
152 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK   0x0000FF00
153 #define ASUS_WMI_DSTS_LIGHTBAR_MASK     0x0000000F
154
155 #define ASUS_FAN_DESC                   "cpu_fan"
156 #define ASUS_FAN_MFUN                   0x13
157 #define ASUS_FAN_SFUN_READ              0x06
158 #define ASUS_FAN_SFUN_WRITE             0x07
159 #define ASUS_FAN_CTRL_MANUAL            1
160 #define ASUS_FAN_CTRL_AUTO              2
161
162 #define USB_INTEL_XUSB2PR               0xD0
163 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI   0x9c31
164
165 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
166
167 static bool ashs_present(void)
168 {
169         int i = 0;
170         while (ashs_ids[i]) {
171                 if (acpi_dev_found(ashs_ids[i++]))
172                         return true;
173         }
174         return false;
175 }
176
177 struct bios_args {
178         u32 arg0;
179         u32 arg1;
180 } __packed;
181
182 /*
183  * Struct that's used for all methods called via AGFN. Naming is
184  * identically to the AML code.
185  */
186 struct agfn_args {
187         u16 mfun; /* probably "Multi-function" to be called */
188         u16 sfun; /* probably "Sub-function" to be called */
189         u16 len;  /* size of the hole struct, including subfunction fields */
190         u8 stas;  /* not used by now */
191         u8 err;   /* zero on success */
192 } __packed;
193
194 /* struct used for calling fan read and write methods */
195 struct fan_args {
196         struct agfn_args agfn;  /* common fields */
197         u8 fan;                 /* fan number: 0: set auto mode 1: 1st fan */
198         u32 speed;              /* read: RPM/100 - write: 0-255 */
199 } __packed;
200
201 /*
202  * <platform>/    - debugfs root directory
203  *   dev_id      - current dev_id
204  *   ctrl_param  - current ctrl_param
205  *   method_id   - current method_id
206  *   devs        - call DEVS(dev_id, ctrl_param) and print result
207  *   dsts        - call DSTS(dev_id)  and print result
208  *   call        - call method_id(dev_id, ctrl_param) and print result
209  */
210 struct asus_wmi_debug {
211         struct dentry *root;
212         u32 method_id;
213         u32 dev_id;
214         u32 ctrl_param;
215 };
216
217 struct asus_rfkill {
218         struct asus_wmi *asus;
219         struct rfkill *rfkill;
220         u32 dev_id;
221 };
222
223 struct asus_wmi {
224         int dsts_id;
225         int spec;
226         int sfun;
227
228         struct input_dev *inputdev;
229         struct backlight_device *backlight_device;
230         struct platform_device *platform_device;
231
232         struct led_classdev wlan_led;
233         int wlan_led_wk;
234         struct led_classdev tpd_led;
235         int tpd_led_wk;
236         struct led_classdev kbd_led;
237         int kbd_led_wk;
238         struct led_classdev lightbar_led;
239         int lightbar_led_wk;
240         struct workqueue_struct *led_workqueue;
241         struct work_struct tpd_led_work;
242         struct work_struct wlan_led_work;
243         struct work_struct lightbar_led_work;
244
245         struct asus_rfkill wlan;
246         struct asus_rfkill bluetooth;
247         struct asus_rfkill wimax;
248         struct asus_rfkill wwan3g;
249         struct asus_rfkill gps;
250         struct asus_rfkill uwb;
251
252         bool asus_hwmon_fan_manual_mode;
253         int asus_hwmon_num_fans;
254         int asus_hwmon_pwm;
255
256         struct hotplug_slot *hotplug_slot;
257         struct mutex hotplug_lock;
258         struct mutex wmi_lock;
259         struct workqueue_struct *hotplug_workqueue;
260         struct work_struct hotplug_work;
261
262         struct asus_wmi_debug debug;
263
264         struct asus_wmi_driver *driver;
265 };
266
267 static int asus_wmi_input_init(struct asus_wmi *asus)
268 {
269         int err;
270
271         asus->inputdev = input_allocate_device();
272         if (!asus->inputdev)
273                 return -ENOMEM;
274
275         asus->inputdev->name = asus->driver->input_name;
276         asus->inputdev->phys = asus->driver->input_phys;
277         asus->inputdev->id.bustype = BUS_HOST;
278         asus->inputdev->dev.parent = &asus->platform_device->dev;
279         set_bit(EV_REP, asus->inputdev->evbit);
280
281         err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
282         if (err)
283                 goto err_free_dev;
284
285         err = input_register_device(asus->inputdev);
286         if (err)
287                 goto err_free_dev;
288
289         return 0;
290
291 err_free_dev:
292         input_free_device(asus->inputdev);
293         return err;
294 }
295
296 static void asus_wmi_input_exit(struct asus_wmi *asus)
297 {
298         if (asus->inputdev)
299                 input_unregister_device(asus->inputdev);
300
301         asus->inputdev = NULL;
302 }
303
304 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
305                                     u32 *retval)
306 {
307         struct bios_args args = {
308                 .arg0 = arg0,
309                 .arg1 = arg1,
310         };
311         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
312         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
313         acpi_status status;
314         union acpi_object *obj;
315         u32 tmp = 0;
316
317         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
318                                      &input, &output);
319
320         if (ACPI_FAILURE(status))
321                 goto exit;
322
323         obj = (union acpi_object *)output.pointer;
324         if (obj && obj->type == ACPI_TYPE_INTEGER)
325                 tmp = (u32) obj->integer.value;
326
327         if (retval)
328                 *retval = tmp;
329
330         kfree(obj);
331
332 exit:
333         if (ACPI_FAILURE(status))
334                 return -EIO;
335
336         if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
337                 return -ENODEV;
338
339         return 0;
340 }
341
342 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
343 {
344         struct acpi_buffer input;
345         u64 phys_addr;
346         u32 retval;
347         u32 status = -1;
348
349         /*
350          * Copy to dma capable address otherwise memory corruption occurs as
351          * bios has to be able to access it.
352          */
353         input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
354         input.length = args.length;
355         if (!input.pointer)
356                 return -ENOMEM;
357         phys_addr = virt_to_phys(input.pointer);
358         memcpy(input.pointer, args.pointer, args.length);
359
360         status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
361                                         phys_addr, 0, &retval);
362         if (!status)
363                 memcpy(args.pointer, input.pointer, args.length);
364
365         kfree(input.pointer);
366         if (status)
367                 return -ENXIO;
368
369         return retval;
370 }
371
372 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
373 {
374         return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
375 }
376
377 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
378                                  u32 *retval)
379 {
380         return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
381                                         ctrl_param, retval);
382 }
383
384 /* Helper for special devices with magic return codes */
385 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
386                                       u32 dev_id, u32 mask)
387 {
388         u32 retval = 0;
389         int err;
390
391         err = asus_wmi_get_devstate(asus, dev_id, &retval);
392
393         if (err < 0)
394                 return err;
395
396         if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
397                 return -ENODEV;
398
399         if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
400                 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
401                         return -ENODEV;
402         }
403
404         return retval & mask;
405 }
406
407 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
408 {
409         return asus_wmi_get_devstate_bits(asus, dev_id,
410                                           ASUS_WMI_DSTS_STATUS_BIT);
411 }
412
413 /*
414  * LEDs
415  */
416 /*
417  * These functions actually update the LED's, and are called from a
418  * workqueue. By doing this as separate work rather than when the LED
419  * subsystem asks, we avoid messing with the Asus ACPI stuff during a
420  * potentially bad time, such as a timer interrupt.
421  */
422 static void tpd_led_update(struct work_struct *work)
423 {
424         int ctrl_param;
425         struct asus_wmi *asus;
426
427         asus = container_of(work, struct asus_wmi, tpd_led_work);
428
429         ctrl_param = asus->tpd_led_wk;
430         asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
431 }
432
433 static void tpd_led_set(struct led_classdev *led_cdev,
434                         enum led_brightness value)
435 {
436         struct asus_wmi *asus;
437
438         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
439
440         asus->tpd_led_wk = !!value;
441         queue_work(asus->led_workqueue, &asus->tpd_led_work);
442 }
443
444 static int read_tpd_led_state(struct asus_wmi *asus)
445 {
446         return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
447 }
448
449 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
450 {
451         struct asus_wmi *asus;
452
453         asus = container_of(led_cdev, struct asus_wmi, tpd_led);
454
455         return read_tpd_led_state(asus);
456 }
457
458 static void kbd_led_update(struct asus_wmi *asus)
459 {
460         int ctrl_param = 0;
461
462         /*
463          * bits 0-2: level
464          * bit 7: light on/off
465          */
466         if (asus->kbd_led_wk > 0)
467                 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
468
469         asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
470         led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
471 }
472
473 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
474 {
475         int retval;
476
477         /*
478          * bits 0-2: level
479          * bit 7: light on/off
480          * bit 8-10: environment (0: dark, 1: normal, 2: light)
481          * bit 17: status unknown
482          */
483         retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
484                                             0xFFFF);
485
486         /* Unknown status is considered as off */
487         if (retval == 0x8000)
488                 retval = 0;
489
490         if (retval >= 0) {
491                 if (level)
492                         *level = retval & 0x7F;
493                 if (env)
494                         *env = (retval >> 8) & 0x7F;
495                 retval = 0;
496         }
497
498         return retval;
499 }
500
501 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
502 {
503         struct asus_wmi *asus;
504         int max_level;
505
506         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
507         max_level = asus->kbd_led.max_brightness;
508
509         if (value > max_level)
510                 value = max_level;
511         else if (value < 0)
512                 value = 0;
513
514         asus->kbd_led_wk = value;
515         kbd_led_update(asus);
516 }
517
518 static void kbd_led_set(struct led_classdev *led_cdev,
519                         enum led_brightness value)
520 {
521         do_kbd_led_set(led_cdev, value);
522 }
523
524 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
525 {
526         struct asus_wmi *asus;
527         int retval, value;
528
529         asus = container_of(led_cdev, struct asus_wmi, kbd_led);
530
531         retval = kbd_led_read(asus, &value, NULL);
532
533         if (retval < 0)
534                 return retval;
535
536         return value;
537 }
538
539 static int wlan_led_unknown_state(struct asus_wmi *asus)
540 {
541         u32 result;
542
543         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
544
545         return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
546 }
547
548 static int wlan_led_presence(struct asus_wmi *asus)
549 {
550         u32 result;
551
552         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
553
554         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
555 }
556
557 static void wlan_led_update(struct work_struct *work)
558 {
559         int ctrl_param;
560         struct asus_wmi *asus;
561
562         asus = container_of(work, struct asus_wmi, wlan_led_work);
563
564         ctrl_param = asus->wlan_led_wk;
565         asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
566 }
567
568 static void wlan_led_set(struct led_classdev *led_cdev,
569                          enum led_brightness value)
570 {
571         struct asus_wmi *asus;
572
573         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
574
575         asus->wlan_led_wk = !!value;
576         queue_work(asus->led_workqueue, &asus->wlan_led_work);
577 }
578
579 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
580 {
581         struct asus_wmi *asus;
582         u32 result;
583
584         asus = container_of(led_cdev, struct asus_wmi, wlan_led);
585         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
586
587         return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
588 }
589
590 static void lightbar_led_update(struct work_struct *work)
591 {
592         struct asus_wmi *asus;
593         int ctrl_param;
594
595         asus = container_of(work, struct asus_wmi, lightbar_led_work);
596
597         ctrl_param = asus->lightbar_led_wk;
598         asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
599 }
600
601 static void lightbar_led_set(struct led_classdev *led_cdev,
602                              enum led_brightness value)
603 {
604         struct asus_wmi *asus;
605
606         asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
607
608         asus->lightbar_led_wk = !!value;
609         queue_work(asus->led_workqueue, &asus->lightbar_led_work);
610 }
611
612 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
613 {
614         struct asus_wmi *asus;
615         u32 result;
616
617         asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
618         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
619
620         return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
621 }
622
623 static int lightbar_led_presence(struct asus_wmi *asus)
624 {
625         u32 result;
626
627         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
628
629         return result & ASUS_WMI_DSTS_PRESENCE_BIT;
630 }
631
632 static void asus_wmi_led_exit(struct asus_wmi *asus)
633 {
634         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
635                 led_classdev_unregister(&asus->kbd_led);
636         if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
637                 led_classdev_unregister(&asus->tpd_led);
638         if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
639                 led_classdev_unregister(&asus->wlan_led);
640         if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
641                 led_classdev_unregister(&asus->lightbar_led);
642         if (asus->led_workqueue)
643                 destroy_workqueue(asus->led_workqueue);
644 }
645
646 static int asus_wmi_led_init(struct asus_wmi *asus)
647 {
648         int rv = 0, led_val;
649
650         asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
651         if (!asus->led_workqueue)
652                 return -ENOMEM;
653
654         if (read_tpd_led_state(asus) >= 0) {
655                 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
656
657                 asus->tpd_led.name = "asus::touchpad";
658                 asus->tpd_led.brightness_set = tpd_led_set;
659                 asus->tpd_led.brightness_get = tpd_led_get;
660                 asus->tpd_led.max_brightness = 1;
661
662                 rv = led_classdev_register(&asus->platform_device->dev,
663                                            &asus->tpd_led);
664                 if (rv)
665                         goto error;
666         }
667
668         led_val = kbd_led_read(asus, NULL, NULL);
669         if (led_val >= 0) {
670                 asus->kbd_led_wk = led_val;
671                 asus->kbd_led.name = "asus::kbd_backlight";
672                 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
673                 asus->kbd_led.brightness_set = kbd_led_set;
674                 asus->kbd_led.brightness_get = kbd_led_get;
675                 asus->kbd_led.max_brightness = 3;
676
677                 rv = led_classdev_register(&asus->platform_device->dev,
678                                            &asus->kbd_led);
679                 if (rv)
680                         goto error;
681         }
682
683         if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
684                 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
685
686                 asus->wlan_led.name = "asus::wlan";
687                 asus->wlan_led.brightness_set = wlan_led_set;
688                 if (!wlan_led_unknown_state(asus))
689                         asus->wlan_led.brightness_get = wlan_led_get;
690                 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
691                 asus->wlan_led.max_brightness = 1;
692                 asus->wlan_led.default_trigger = "asus-wlan";
693
694                 rv = led_classdev_register(&asus->platform_device->dev,
695                                            &asus->wlan_led);
696                 if (rv)
697                         goto error;
698         }
699
700         if (lightbar_led_presence(asus)) {
701                 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
702
703                 asus->lightbar_led.name = "asus::lightbar";
704                 asus->lightbar_led.brightness_set = lightbar_led_set;
705                 asus->lightbar_led.brightness_get = lightbar_led_get;
706                 asus->lightbar_led.max_brightness = 1;
707
708                 rv = led_classdev_register(&asus->platform_device->dev,
709                                            &asus->lightbar_led);
710         }
711
712 error:
713         if (rv)
714                 asus_wmi_led_exit(asus);
715
716         return rv;
717 }
718
719
720 /*
721  * PCI hotplug (for wlan rfkill)
722  */
723 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
724 {
725         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
726
727         if (result < 0)
728                 return false;
729         return !result;
730 }
731
732 static void asus_rfkill_hotplug(struct asus_wmi *asus)
733 {
734         struct pci_dev *dev;
735         struct pci_bus *bus;
736         bool blocked;
737         bool absent;
738         u32 l;
739
740         mutex_lock(&asus->wmi_lock);
741         blocked = asus_wlan_rfkill_blocked(asus);
742         mutex_unlock(&asus->wmi_lock);
743
744         mutex_lock(&asus->hotplug_lock);
745         pci_lock_rescan_remove();
746
747         if (asus->wlan.rfkill)
748                 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
749
750         if (asus->hotplug_slot) {
751                 bus = pci_find_bus(0, 1);
752                 if (!bus) {
753                         pr_warn("Unable to find PCI bus 1?\n");
754                         goto out_unlock;
755                 }
756
757                 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
758                         pr_err("Unable to read PCI config space?\n");
759                         goto out_unlock;
760                 }
761                 absent = (l == 0xffffffff);
762
763                 if (blocked != absent) {
764                         pr_warn("BIOS says wireless lan is %s, "
765                                 "but the pci device is %s\n",
766                                 blocked ? "blocked" : "unblocked",
767                                 absent ? "absent" : "present");
768                         pr_warn("skipped wireless hotplug as probably "
769                                 "inappropriate for this model\n");
770                         goto out_unlock;
771                 }
772
773                 if (!blocked) {
774                         dev = pci_get_slot(bus, 0);
775                         if (dev) {
776                                 /* Device already present */
777                                 pci_dev_put(dev);
778                                 goto out_unlock;
779                         }
780                         dev = pci_scan_single_device(bus, 0);
781                         if (dev) {
782                                 pci_bus_assign_resources(bus);
783                                 pci_bus_add_device(dev);
784                         }
785                 } else {
786                         dev = pci_get_slot(bus, 0);
787                         if (dev) {
788                                 pci_stop_and_remove_bus_device(dev);
789                                 pci_dev_put(dev);
790                         }
791                 }
792         }
793
794 out_unlock:
795         pci_unlock_rescan_remove();
796         mutex_unlock(&asus->hotplug_lock);
797 }
798
799 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
800 {
801         struct asus_wmi *asus = data;
802
803         if (event != ACPI_NOTIFY_BUS_CHECK)
804                 return;
805
806         /*
807          * We can't call directly asus_rfkill_hotplug because most
808          * of the time WMBC is still being executed and not reetrant.
809          * There is currently no way to tell ACPICA that  we want this
810          * method to be serialized, we schedule a asus_rfkill_hotplug
811          * call later, in a safer context.
812          */
813         queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
814 }
815
816 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
817 {
818         acpi_status status;
819         acpi_handle handle;
820
821         status = acpi_get_handle(NULL, node, &handle);
822
823         if (ACPI_SUCCESS(status)) {
824                 status = acpi_install_notify_handler(handle,
825                                                      ACPI_SYSTEM_NOTIFY,
826                                                      asus_rfkill_notify, asus);
827                 if (ACPI_FAILURE(status))
828                         pr_warn("Failed to register notify on %s\n", node);
829         } else
830                 return -ENODEV;
831
832         return 0;
833 }
834
835 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
836 {
837         acpi_status status = AE_OK;
838         acpi_handle handle;
839
840         status = acpi_get_handle(NULL, node, &handle);
841
842         if (ACPI_SUCCESS(status)) {
843                 status = acpi_remove_notify_handler(handle,
844                                                     ACPI_SYSTEM_NOTIFY,
845                                                     asus_rfkill_notify);
846                 if (ACPI_FAILURE(status))
847                         pr_err("Error removing rfkill notify handler %s\n",
848                                node);
849         }
850 }
851
852 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
853                                    u8 *value)
854 {
855         struct asus_wmi *asus = hotplug_slot->private;
856         int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
857
858         if (result < 0)
859                 return result;
860
861         *value = !!result;
862         return 0;
863 }
864
865 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
866         .owner = THIS_MODULE,
867         .get_adapter_status = asus_get_adapter_status,
868         .get_power_status = asus_get_adapter_status,
869 };
870
871 static void asus_hotplug_work(struct work_struct *work)
872 {
873         struct asus_wmi *asus;
874
875         asus = container_of(work, struct asus_wmi, hotplug_work);
876         asus_rfkill_hotplug(asus);
877 }
878
879 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
880 {
881         int ret = -ENOMEM;
882         struct pci_bus *bus = pci_find_bus(0, 1);
883
884         if (!bus) {
885                 pr_err("Unable to find wifi PCI bus\n");
886                 return -ENODEV;
887         }
888
889         asus->hotplug_workqueue =
890             create_singlethread_workqueue("hotplug_workqueue");
891         if (!asus->hotplug_workqueue)
892                 goto error_workqueue;
893
894         INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
895
896         asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
897         if (!asus->hotplug_slot)
898                 goto error_slot;
899
900         asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
901                                            GFP_KERNEL);
902         if (!asus->hotplug_slot->info)
903                 goto error_info;
904
905         asus->hotplug_slot->private = asus;
906         asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
907         asus_get_adapter_status(asus->hotplug_slot,
908                                 &asus->hotplug_slot->info->adapter_status);
909
910         ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
911         if (ret) {
912                 pr_err("Unable to register hotplug slot - %d\n", ret);
913                 goto error_register;
914         }
915
916         return 0;
917
918 error_register:
919         kfree(asus->hotplug_slot->info);
920 error_info:
921         kfree(asus->hotplug_slot);
922         asus->hotplug_slot = NULL;
923 error_slot:
924         destroy_workqueue(asus->hotplug_workqueue);
925 error_workqueue:
926         return ret;
927 }
928
929 /*
930  * Rfkill devices
931  */
932 static int asus_rfkill_set(void *data, bool blocked)
933 {
934         struct asus_rfkill *priv = data;
935         u32 ctrl_param = !blocked;
936         u32 dev_id = priv->dev_id;
937
938         /*
939          * If the user bit is set, BIOS can't set and record the wlan status,
940          * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
941          * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
942          * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
943          * while setting the wlan status through WMI.
944          * This is also the behavior that windows app will do.
945          */
946         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
947              priv->asus->driver->wlan_ctrl_by_user)
948                 dev_id = ASUS_WMI_DEVID_WLAN_LED;
949
950         return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
951 }
952
953 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
954 {
955         struct asus_rfkill *priv = data;
956         int result;
957
958         result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
959
960         if (result < 0)
961                 return;
962
963         rfkill_set_sw_state(priv->rfkill, !result);
964 }
965
966 static int asus_rfkill_wlan_set(void *data, bool blocked)
967 {
968         struct asus_rfkill *priv = data;
969         struct asus_wmi *asus = priv->asus;
970         int ret;
971
972         /*
973          * This handler is enabled only if hotplug is enabled.
974          * In this case, the asus_wmi_set_devstate() will
975          * trigger a wmi notification and we need to wait
976          * this call to finish before being able to call
977          * any wmi method
978          */
979         mutex_lock(&asus->wmi_lock);
980         ret = asus_rfkill_set(data, blocked);
981         mutex_unlock(&asus->wmi_lock);
982         return ret;
983 }
984
985 static const struct rfkill_ops asus_rfkill_wlan_ops = {
986         .set_block = asus_rfkill_wlan_set,
987         .query = asus_rfkill_query,
988 };
989
990 static const struct rfkill_ops asus_rfkill_ops = {
991         .set_block = asus_rfkill_set,
992         .query = asus_rfkill_query,
993 };
994
995 static int asus_new_rfkill(struct asus_wmi *asus,
996                            struct asus_rfkill *arfkill,
997                            const char *name, enum rfkill_type type, int dev_id)
998 {
999         int result = asus_wmi_get_devstate_simple(asus, dev_id);
1000         struct rfkill **rfkill = &arfkill->rfkill;
1001
1002         if (result < 0)
1003                 return result;
1004
1005         arfkill->dev_id = dev_id;
1006         arfkill->asus = asus;
1007
1008         if (dev_id == ASUS_WMI_DEVID_WLAN &&
1009             asus->driver->quirks->hotplug_wireless)
1010                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1011                                        &asus_rfkill_wlan_ops, arfkill);
1012         else
1013                 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1014                                        &asus_rfkill_ops, arfkill);
1015
1016         if (!*rfkill)
1017                 return -EINVAL;
1018
1019         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1020                         (asus->driver->quirks->wapf > 0))
1021                 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1022
1023         rfkill_init_sw_state(*rfkill, !result);
1024         result = rfkill_register(*rfkill);
1025         if (result) {
1026                 rfkill_destroy(*rfkill);
1027                 *rfkill = NULL;
1028                 return result;
1029         }
1030         return 0;
1031 }
1032
1033 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1034 {
1035         if (asus->driver->wlan_ctrl_by_user && ashs_present())
1036                 return;
1037
1038         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1039         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1040         asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1041         if (asus->wlan.rfkill) {
1042                 rfkill_unregister(asus->wlan.rfkill);
1043                 rfkill_destroy(asus->wlan.rfkill);
1044                 asus->wlan.rfkill = NULL;
1045         }
1046         /*
1047          * Refresh pci hotplug in case the rfkill state was changed after
1048          * asus_unregister_rfkill_notifier()
1049          */
1050         asus_rfkill_hotplug(asus);
1051         if (asus->hotplug_slot) {
1052                 pci_hp_deregister(asus->hotplug_slot);
1053                 kfree(asus->hotplug_slot->info);
1054                 kfree(asus->hotplug_slot);
1055         }
1056         if (asus->hotplug_workqueue)
1057                 destroy_workqueue(asus->hotplug_workqueue);
1058
1059         if (asus->bluetooth.rfkill) {
1060                 rfkill_unregister(asus->bluetooth.rfkill);
1061                 rfkill_destroy(asus->bluetooth.rfkill);
1062                 asus->bluetooth.rfkill = NULL;
1063         }
1064         if (asus->wimax.rfkill) {
1065                 rfkill_unregister(asus->wimax.rfkill);
1066                 rfkill_destroy(asus->wimax.rfkill);
1067                 asus->wimax.rfkill = NULL;
1068         }
1069         if (asus->wwan3g.rfkill) {
1070                 rfkill_unregister(asus->wwan3g.rfkill);
1071                 rfkill_destroy(asus->wwan3g.rfkill);
1072                 asus->wwan3g.rfkill = NULL;
1073         }
1074         if (asus->gps.rfkill) {
1075                 rfkill_unregister(asus->gps.rfkill);
1076                 rfkill_destroy(asus->gps.rfkill);
1077                 asus->gps.rfkill = NULL;
1078         }
1079         if (asus->uwb.rfkill) {
1080                 rfkill_unregister(asus->uwb.rfkill);
1081                 rfkill_destroy(asus->uwb.rfkill);
1082                 asus->uwb.rfkill = NULL;
1083         }
1084 }
1085
1086 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1087 {
1088         int result = 0;
1089
1090         mutex_init(&asus->hotplug_lock);
1091         mutex_init(&asus->wmi_lock);
1092
1093         result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1094                                  RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1095
1096         if (result && result != -ENODEV)
1097                 goto exit;
1098
1099         result = asus_new_rfkill(asus, &asus->bluetooth,
1100                                  "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1101                                  ASUS_WMI_DEVID_BLUETOOTH);
1102
1103         if (result && result != -ENODEV)
1104                 goto exit;
1105
1106         result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1107                                  RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1108
1109         if (result && result != -ENODEV)
1110                 goto exit;
1111
1112         result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1113                                  RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1114
1115         if (result && result != -ENODEV)
1116                 goto exit;
1117
1118         result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1119                                  RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1120
1121         if (result && result != -ENODEV)
1122                 goto exit;
1123
1124         result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1125                                  RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1126
1127         if (result && result != -ENODEV)
1128                 goto exit;
1129
1130         if (!asus->driver->quirks->hotplug_wireless)
1131                 goto exit;
1132
1133         result = asus_setup_pci_hotplug(asus);
1134         /*
1135          * If we get -EBUSY then something else is handling the PCI hotplug -
1136          * don't fail in this case
1137          */
1138         if (result == -EBUSY)
1139                 result = 0;
1140
1141         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1142         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1143         asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1144         /*
1145          * Refresh pci hotplug in case the rfkill state was changed during
1146          * setup.
1147          */
1148         asus_rfkill_hotplug(asus);
1149
1150 exit:
1151         if (result && result != -ENODEV)
1152                 asus_wmi_rfkill_exit(asus);
1153
1154         if (result == -ENODEV)
1155                 result = 0;
1156
1157         return result;
1158 }
1159
1160 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1161 {
1162         struct pci_dev *xhci_pdev;
1163         u32 orig_ports_available;
1164         u32 ports_available = asus->driver->quirks->xusb2pr;
1165
1166         xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1167                         PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1168                         NULL);
1169
1170         if (!xhci_pdev)
1171                 return;
1172
1173         pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1174                                 &orig_ports_available);
1175
1176         pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1177                                 cpu_to_le32(ports_available));
1178
1179         pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1180                         orig_ports_available, ports_available);
1181 }
1182
1183 /*
1184  * Some devices dont support or have borcken get_als method
1185  * but still support set method.
1186  */
1187 static void asus_wmi_set_als(void)
1188 {
1189         asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1190 }
1191
1192 /*
1193  * Hwmon device
1194  */
1195 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1196                                           int *speed)
1197 {
1198         struct fan_args args = {
1199                 .agfn.len = sizeof(args),
1200                 .agfn.mfun = ASUS_FAN_MFUN,
1201                 .agfn.sfun = ASUS_FAN_SFUN_READ,
1202                 .fan = fan,
1203                 .speed = 0,
1204         };
1205         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1206         int status;
1207
1208         if (fan != 1)
1209                 return -EINVAL;
1210
1211         status = asus_wmi_evaluate_method_agfn(input);
1212
1213         if (status || args.agfn.err)
1214                 return -ENXIO;
1215
1216         if (speed)
1217                 *speed = args.speed;
1218
1219         return 0;
1220 }
1221
1222 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1223                                      int *speed)
1224 {
1225         struct fan_args args = {
1226                 .agfn.len = sizeof(args),
1227                 .agfn.mfun = ASUS_FAN_MFUN,
1228                 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1229                 .fan = fan,
1230                 .speed = speed ?  *speed : 0,
1231         };
1232         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1233         int status;
1234
1235         /* 1: for setting 1st fan's speed 0: setting auto mode */
1236         if (fan != 1 && fan != 0)
1237                 return -EINVAL;
1238
1239         status = asus_wmi_evaluate_method_agfn(input);
1240
1241         if (status || args.agfn.err)
1242                 return -ENXIO;
1243
1244         if (speed && fan == 1)
1245                 asus->asus_hwmon_pwm = *speed;
1246
1247         return 0;
1248 }
1249
1250 /*
1251  * Check if we can read the speed of one fan. If true we assume we can also
1252  * control it.
1253  */
1254 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1255 {
1256         int status;
1257         int speed = 0;
1258
1259         *num_fans = 0;
1260
1261         status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1262         if (!status)
1263                 *num_fans = 1;
1264
1265         return 0;
1266 }
1267
1268 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1269 {
1270         int status;
1271
1272         status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1273         if (status)
1274                 return -ENXIO;
1275
1276         asus->asus_hwmon_fan_manual_mode = false;
1277
1278         return 0;
1279 }
1280
1281 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1282 {
1283         struct asus_wmi *asus = dev_get_drvdata(dev);
1284         int value;
1285         int ret;
1286
1287         /* no speed readable on manual mode */
1288         if (asus->asus_hwmon_fan_manual_mode)
1289                 return -ENXIO;
1290
1291         ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1292         if (ret) {
1293                 pr_warn("reading fan speed failed: %d\n", ret);
1294                 return -ENXIO;
1295         }
1296
1297         return value;
1298 }
1299
1300 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1301 {
1302         int err;
1303
1304         if (asus->asus_hwmon_pwm >= 0) {
1305                 *value = asus->asus_hwmon_pwm;
1306                 return;
1307         }
1308
1309         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1310         if (err < 0)
1311                 return;
1312
1313         *value &= 0xFF;
1314
1315         if (*value == 1) /* Low Speed */
1316                 *value = 85;
1317         else if (*value == 2)
1318                 *value = 170;
1319         else if (*value == 3)
1320                 *value = 255;
1321         else if (*value) {
1322                 pr_err("Unknown fan speed %#x\n", *value);
1323                 *value = -1;
1324         }
1325 }
1326
1327 static ssize_t pwm1_show(struct device *dev,
1328                                struct device_attribute *attr,
1329                                char *buf)
1330 {
1331         struct asus_wmi *asus = dev_get_drvdata(dev);
1332         int value;
1333
1334         asus_hwmon_pwm_show(asus, 0, &value);
1335
1336         return sprintf(buf, "%d\n", value);
1337 }
1338
1339 static ssize_t pwm1_store(struct device *dev,
1340                                      struct device_attribute *attr,
1341                                      const char *buf, size_t count) {
1342         struct asus_wmi *asus = dev_get_drvdata(dev);
1343         int value;
1344         int state;
1345         int ret;
1346
1347         ret = kstrtouint(buf, 10, &value);
1348
1349         if (ret)
1350                 return ret;
1351
1352         value = clamp(value, 0, 255);
1353
1354         state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1355         if (state)
1356                 pr_warn("Setting fan speed failed: %d\n", state);
1357         else
1358                 asus->asus_hwmon_fan_manual_mode = true;
1359
1360         return count;
1361 }
1362
1363 static ssize_t fan1_input_show(struct device *dev,
1364                                         struct device_attribute *attr,
1365                                         char *buf)
1366 {
1367         int value = asus_hwmon_fan_rpm_show(dev, 0);
1368
1369         return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1370
1371 }
1372
1373 static ssize_t pwm1_enable_show(struct device *dev,
1374                                                  struct device_attribute *attr,
1375                                                  char *buf)
1376 {
1377         struct asus_wmi *asus = dev_get_drvdata(dev);
1378
1379         if (asus->asus_hwmon_fan_manual_mode)
1380                 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1381
1382         return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1383 }
1384
1385 static ssize_t pwm1_enable_store(struct device *dev,
1386                                                   struct device_attribute *attr,
1387                                                   const char *buf, size_t count)
1388 {
1389         struct asus_wmi *asus = dev_get_drvdata(dev);
1390         int status = 0;
1391         int state;
1392         int ret;
1393
1394         ret = kstrtouint(buf, 10, &state);
1395
1396         if (ret)
1397                 return ret;
1398
1399         if (state == ASUS_FAN_CTRL_MANUAL)
1400                 asus->asus_hwmon_fan_manual_mode = true;
1401         else
1402                 status = asus_hwmon_fan_set_auto(asus);
1403
1404         if (status)
1405                 return status;
1406
1407         return count;
1408 }
1409
1410 static ssize_t fan1_label_show(struct device *dev,
1411                                           struct device_attribute *attr,
1412                                           char *buf)
1413 {
1414         return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1415 }
1416
1417 static ssize_t asus_hwmon_temp1(struct device *dev,
1418                                 struct device_attribute *attr,
1419                                 char *buf)
1420 {
1421         struct asus_wmi *asus = dev_get_drvdata(dev);
1422         u32 value;
1423         int err;
1424
1425         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1426
1427         if (err < 0)
1428                 return err;
1429
1430         value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1431
1432         return sprintf(buf, "%d\n", value);
1433 }
1434
1435 /* Fan1 */
1436 static DEVICE_ATTR_RW(pwm1);
1437 static DEVICE_ATTR_RW(pwm1_enable);
1438 static DEVICE_ATTR_RO(fan1_input);
1439 static DEVICE_ATTR_RO(fan1_label);
1440
1441 /* Temperature */
1442 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1443
1444 static struct attribute *hwmon_attributes[] = {
1445         &dev_attr_pwm1.attr,
1446         &dev_attr_pwm1_enable.attr,
1447         &dev_attr_fan1_input.attr,
1448         &dev_attr_fan1_label.attr,
1449
1450         &dev_attr_temp1_input.attr,
1451         NULL
1452 };
1453
1454 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1455                                           struct attribute *attr, int idx)
1456 {
1457         struct device *dev = container_of(kobj, struct device, kobj);
1458         struct platform_device *pdev = to_platform_device(dev->parent);
1459         struct asus_wmi *asus = platform_get_drvdata(pdev);
1460         int dev_id = -1;
1461         int fan_attr = -1;
1462         u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1463         bool ok = true;
1464
1465         if (attr == &dev_attr_pwm1.attr)
1466                 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1467         else if (attr == &dev_attr_temp1_input.attr)
1468                 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1469
1470
1471         if (attr == &dev_attr_fan1_input.attr
1472             || attr == &dev_attr_fan1_label.attr
1473             || attr == &dev_attr_pwm1.attr
1474             || attr == &dev_attr_pwm1_enable.attr) {
1475                 fan_attr = 1;
1476         }
1477
1478         if (dev_id != -1) {
1479                 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1480
1481                 if (err < 0 && fan_attr == -1)
1482                         return 0; /* can't return negative here */
1483         }
1484
1485         if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1486                 /*
1487                  * We need to find a better way, probably using sfun,
1488                  * bits or spec ...
1489                  * Currently we disable it if:
1490                  * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1491                  * - reverved bits are non-zero
1492                  * - sfun and presence bit are not set
1493                  */
1494                 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1495                     || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1496                         ok = false;
1497                 else
1498                         ok = fan_attr <= asus->asus_hwmon_num_fans;
1499         } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1500                 /* If value is zero, something is clearly wrong */
1501                 if (!value)
1502                         ok = false;
1503         } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1504                 ok = true;
1505         } else {
1506                 ok = false;
1507         }
1508
1509         return ok ? attr->mode : 0;
1510 }
1511
1512 static const struct attribute_group hwmon_attribute_group = {
1513         .is_visible = asus_hwmon_sysfs_is_visible,
1514         .attrs = hwmon_attributes
1515 };
1516 __ATTRIBUTE_GROUPS(hwmon_attribute);
1517
1518 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1519 {
1520         struct device *hwmon;
1521
1522         hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1523                                                   "asus", asus,
1524                                                   hwmon_attribute_groups);
1525         if (IS_ERR(hwmon)) {
1526                 pr_err("Could not register asus hwmon device\n");
1527                 return PTR_ERR(hwmon);
1528         }
1529         return 0;
1530 }
1531
1532 /*
1533  * Backlight
1534  */
1535 static int read_backlight_power(struct asus_wmi *asus)
1536 {
1537         int ret;
1538         if (asus->driver->quirks->store_backlight_power)
1539                 ret = !asus->driver->panel_power;
1540         else
1541                 ret = asus_wmi_get_devstate_simple(asus,
1542                                                    ASUS_WMI_DEVID_BACKLIGHT);
1543
1544         if (ret < 0)
1545                 return ret;
1546
1547         return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1548 }
1549
1550 static int read_brightness_max(struct asus_wmi *asus)
1551 {
1552         u32 retval;
1553         int err;
1554
1555         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1556
1557         if (err < 0)
1558                 return err;
1559
1560         retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1561         retval >>= 8;
1562
1563         if (!retval)
1564                 return -ENODEV;
1565
1566         return retval;
1567 }
1568
1569 static int read_brightness(struct backlight_device *bd)
1570 {
1571         struct asus_wmi *asus = bl_get_data(bd);
1572         u32 retval;
1573         int err;
1574
1575         err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1576
1577         if (err < 0)
1578                 return err;
1579
1580         return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1581 }
1582
1583 static u32 get_scalar_command(struct backlight_device *bd)
1584 {
1585         struct asus_wmi *asus = bl_get_data(bd);
1586         u32 ctrl_param = 0;
1587
1588         if ((asus->driver->brightness < bd->props.brightness) ||
1589             bd->props.brightness == bd->props.max_brightness)
1590                 ctrl_param = 0x00008001;
1591         else if ((asus->driver->brightness > bd->props.brightness) ||
1592                  bd->props.brightness == 0)
1593                 ctrl_param = 0x00008000;
1594
1595         asus->driver->brightness = bd->props.brightness;
1596
1597         return ctrl_param;
1598 }
1599
1600 static int update_bl_status(struct backlight_device *bd)
1601 {
1602         struct asus_wmi *asus = bl_get_data(bd);
1603         u32 ctrl_param;
1604         int power, err = 0;
1605
1606         power = read_backlight_power(asus);
1607         if (power != -ENODEV && bd->props.power != power) {
1608                 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1609                 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1610                                             ctrl_param, NULL);
1611                 if (asus->driver->quirks->store_backlight_power)
1612                         asus->driver->panel_power = bd->props.power;
1613
1614                 /* When using scalar brightness, updating the brightness
1615                  * will mess with the backlight power */
1616                 if (asus->driver->quirks->scalar_panel_brightness)
1617                         return err;
1618         }
1619
1620         if (asus->driver->quirks->scalar_panel_brightness)
1621                 ctrl_param = get_scalar_command(bd);
1622         else
1623                 ctrl_param = bd->props.brightness;
1624
1625         err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1626                                     ctrl_param, NULL);
1627
1628         return err;
1629 }
1630
1631 static const struct backlight_ops asus_wmi_bl_ops = {
1632         .get_brightness = read_brightness,
1633         .update_status = update_bl_status,
1634 };
1635
1636 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1637 {
1638         struct backlight_device *bd = asus->backlight_device;
1639         int old = bd->props.brightness;
1640         int new = old;
1641
1642         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1643                 new = code - NOTIFY_BRNUP_MIN + 1;
1644         else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1645                 new = code - NOTIFY_BRNDOWN_MIN;
1646
1647         bd->props.brightness = new;
1648         backlight_update_status(bd);
1649         backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1650
1651         return old;
1652 }
1653
1654 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1655 {
1656         struct backlight_device *bd;
1657         struct backlight_properties props;
1658         int max;
1659         int power;
1660
1661         max = read_brightness_max(asus);
1662         if (max < 0)
1663                 return max;
1664
1665         power = read_backlight_power(asus);
1666
1667         if (power == -ENODEV)
1668                 power = FB_BLANK_UNBLANK;
1669         else if (power < 0)
1670                 return power;
1671
1672         memset(&props, 0, sizeof(struct backlight_properties));
1673         props.type = BACKLIGHT_PLATFORM;
1674         props.max_brightness = max;
1675         bd = backlight_device_register(asus->driver->name,
1676                                        &asus->platform_device->dev, asus,
1677                                        &asus_wmi_bl_ops, &props);
1678         if (IS_ERR(bd)) {
1679                 pr_err("Could not register backlight device\n");
1680                 return PTR_ERR(bd);
1681         }
1682
1683         asus->backlight_device = bd;
1684
1685         if (asus->driver->quirks->store_backlight_power)
1686                 asus->driver->panel_power = power;
1687
1688         bd->props.brightness = read_brightness(bd);
1689         bd->props.power = power;
1690         backlight_update_status(bd);
1691
1692         asus->driver->brightness = bd->props.brightness;
1693
1694         return 0;
1695 }
1696
1697 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1698 {
1699         backlight_device_unregister(asus->backlight_device);
1700
1701         asus->backlight_device = NULL;
1702 }
1703
1704 static int is_display_toggle(int code)
1705 {
1706         /* display toggle keys */
1707         if ((code >= 0x61 && code <= 0x67) ||
1708             (code >= 0x8c && code <= 0x93) ||
1709             (code >= 0xa0 && code <= 0xa7) ||
1710             (code >= 0xd0 && code <= 0xd5))
1711                 return 1;
1712
1713         return 0;
1714 }
1715
1716 static void asus_wmi_notify(u32 value, void *context)
1717 {
1718         struct asus_wmi *asus = context;
1719         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1720         union acpi_object *obj;
1721         acpi_status status;
1722         int code;
1723         int orig_code;
1724         unsigned int key_value = 1;
1725         bool autorelease = 1;
1726
1727         status = wmi_get_event_data(value, &response);
1728         if (status != AE_OK) {
1729                 pr_err("bad event status 0x%x\n", status);
1730                 return;
1731         }
1732
1733         obj = (union acpi_object *)response.pointer;
1734
1735         if (!obj || obj->type != ACPI_TYPE_INTEGER)
1736                 goto exit;
1737
1738         code = obj->integer.value;
1739         orig_code = code;
1740
1741         if (asus->driver->key_filter) {
1742                 asus->driver->key_filter(asus->driver, &code, &key_value,
1743                                          &autorelease);
1744                 if (code == ASUS_WMI_KEY_IGNORE)
1745                         goto exit;
1746         }
1747
1748         if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1749                 code = ASUS_WMI_BRN_UP;
1750         else if (code >= NOTIFY_BRNDOWN_MIN &&
1751                  code <= NOTIFY_BRNDOWN_MAX)
1752                 code = ASUS_WMI_BRN_DOWN;
1753
1754         if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1755                 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1756                         asus_wmi_backlight_notify(asus, orig_code);
1757                         goto exit;
1758                 }
1759         }
1760
1761         if (code == NOTIFY_KBD_BRTUP) {
1762                 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1763                 goto exit;
1764         }
1765         if (code == NOTIFY_KBD_BRTDWN) {
1766                 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
1767                 goto exit;
1768         }
1769         if (code == NOTIFY_KBD_BRTTOGGLE) {
1770                 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1771                         do_kbd_led_set(&asus->kbd_led, 0);
1772                 else
1773                         do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
1774                 goto exit;
1775         }
1776
1777         if (is_display_toggle(code) &&
1778             asus->driver->quirks->no_display_toggle)
1779                 goto exit;
1780
1781         if (!sparse_keymap_report_event(asus->inputdev, code,
1782                                         key_value, autorelease))
1783                 pr_info("Unknown key %x pressed\n", code);
1784
1785 exit:
1786         kfree(obj);
1787 }
1788
1789 /*
1790  * Sys helpers
1791  */
1792 static int parse_arg(const char *buf, unsigned long count, int *val)
1793 {
1794         if (!count)
1795                 return 0;
1796         if (sscanf(buf, "%i", val) != 1)
1797                 return -EINVAL;
1798         return count;
1799 }
1800
1801 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1802                              const char *buf, size_t count)
1803 {
1804         u32 retval;
1805         int rv, err, value;
1806
1807         value = asus_wmi_get_devstate_simple(asus, devid);
1808         if (value < 0)
1809                 return value;
1810
1811         rv = parse_arg(buf, count, &value);
1812         err = asus_wmi_set_devstate(devid, value, &retval);
1813
1814         if (err < 0)
1815                 return err;
1816
1817         return rv;
1818 }
1819
1820 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1821 {
1822         int value = asus_wmi_get_devstate_simple(asus, devid);
1823
1824         if (value < 0)
1825                 return value;
1826
1827         return sprintf(buf, "%d\n", value);
1828 }
1829
1830 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm)                  \
1831         static ssize_t show_##_name(struct device *dev,                 \
1832                                     struct device_attribute *attr,      \
1833                                     char *buf)                          \
1834         {                                                               \
1835                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1836                                                                         \
1837                 return show_sys_wmi(asus, _cm, buf);                    \
1838         }                                                               \
1839         static ssize_t store_##_name(struct device *dev,                \
1840                                      struct device_attribute *attr,     \
1841                                      const char *buf, size_t count)     \
1842         {                                                               \
1843                 struct asus_wmi *asus = dev_get_drvdata(dev);           \
1844                                                                         \
1845                 return store_sys_wmi(asus, _cm, buf, count);            \
1846         }                                                               \
1847         static struct device_attribute dev_attr_##_name = {             \
1848                 .attr = {                                               \
1849                         .name = __stringify(_name),                     \
1850                         .mode = _mode },                                \
1851                 .show   = show_##_name,                                 \
1852                 .store  = store_##_name,                                \
1853         }
1854
1855 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1856 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1857 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1858 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1859 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1860
1861 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1862                            const char *buf, size_t count)
1863 {
1864         int value, rv;
1865
1866         if (!count || sscanf(buf, "%i", &value) != 1)
1867                 return -EINVAL;
1868         if (value < 0 || value > 2)
1869                 return -EINVAL;
1870
1871         rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1872         if (rv < 0)
1873                 return rv;
1874
1875         return count;
1876 }
1877
1878 static DEVICE_ATTR_WO(cpufv);
1879
1880 static struct attribute *platform_attributes[] = {
1881         &dev_attr_cpufv.attr,
1882         &dev_attr_camera.attr,
1883         &dev_attr_cardr.attr,
1884         &dev_attr_touchpad.attr,
1885         &dev_attr_lid_resume.attr,
1886         &dev_attr_als_enable.attr,
1887         NULL
1888 };
1889
1890 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1891                                     struct attribute *attr, int idx)
1892 {
1893         struct device *dev = container_of(kobj, struct device, kobj);
1894         struct asus_wmi *asus = dev_get_drvdata(dev);
1895         bool ok = true;
1896         int devid = -1;
1897
1898         if (attr == &dev_attr_camera.attr)
1899                 devid = ASUS_WMI_DEVID_CAMERA;
1900         else if (attr == &dev_attr_cardr.attr)
1901                 devid = ASUS_WMI_DEVID_CARDREADER;
1902         else if (attr == &dev_attr_touchpad.attr)
1903                 devid = ASUS_WMI_DEVID_TOUCHPAD;
1904         else if (attr == &dev_attr_lid_resume.attr)
1905                 devid = ASUS_WMI_DEVID_LID_RESUME;
1906         else if (attr == &dev_attr_als_enable.attr)
1907                 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1908
1909         if (devid != -1)
1910                 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1911
1912         return ok ? attr->mode : 0;
1913 }
1914
1915 static const struct attribute_group platform_attribute_group = {
1916         .is_visible = asus_sysfs_is_visible,
1917         .attrs = platform_attributes
1918 };
1919
1920 static void asus_wmi_sysfs_exit(struct platform_device *device)
1921 {
1922         sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1923 }
1924
1925 static int asus_wmi_sysfs_init(struct platform_device *device)
1926 {
1927         return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1928 }
1929
1930 /*
1931  * Platform device
1932  */
1933 static int asus_wmi_platform_init(struct asus_wmi *asus)
1934 {
1935         int rv;
1936
1937         /* INIT enable hotkeys on some models */
1938         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1939                 pr_info("Initialization: %#x\n", rv);
1940
1941         /* We don't know yet what to do with this version... */
1942         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1943                 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1944                 asus->spec = rv;
1945         }
1946
1947         /*
1948          * The SFUN method probably allows the original driver to get the list
1949          * of features supported by a given model. For now, 0x0100 or 0x0800
1950          * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1951          * The significance of others is yet to be found.
1952          */
1953         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1954                 pr_info("SFUN value: %#x\n", rv);
1955                 asus->sfun = rv;
1956         }
1957
1958         /*
1959          * Eee PC and Notebooks seems to have different method_id for DSTS,
1960          * but it may also be related to the BIOS's SPEC.
1961          * Note, on most Eeepc, there is no way to check if a method exist
1962          * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1963          * but once again, SPEC may probably be used for that kind of things.
1964          */
1965         if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1966                 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1967         else
1968                 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1969
1970         /* CWAP allow to define the behavior of the Fn+F2 key,
1971          * this method doesn't seems to be present on Eee PCs */
1972         if (asus->driver->quirks->wapf >= 0)
1973                 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1974                                       asus->driver->quirks->wapf, NULL);
1975
1976         return asus_wmi_sysfs_init(asus->platform_device);
1977 }
1978
1979 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1980 {
1981         asus_wmi_sysfs_exit(asus->platform_device);
1982 }
1983
1984 /*
1985  * debugfs
1986  */
1987 struct asus_wmi_debugfs_node {
1988         struct asus_wmi *asus;
1989         char *name;
1990         int (*show) (struct seq_file *m, void *data);
1991 };
1992
1993 static int show_dsts(struct seq_file *m, void *data)
1994 {
1995         struct asus_wmi *asus = m->private;
1996         int err;
1997         u32 retval = -1;
1998
1999         err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2000
2001         if (err < 0)
2002                 return err;
2003
2004         seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2005
2006         return 0;
2007 }
2008
2009 static int show_devs(struct seq_file *m, void *data)
2010 {
2011         struct asus_wmi *asus = m->private;
2012         int err;
2013         u32 retval = -1;
2014
2015         err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2016                                     &retval);
2017
2018         if (err < 0)
2019                 return err;
2020
2021         seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2022                    asus->debug.ctrl_param, retval);
2023
2024         return 0;
2025 }
2026
2027 static int show_call(struct seq_file *m, void *data)
2028 {
2029         struct asus_wmi *asus = m->private;
2030         struct bios_args args = {
2031                 .arg0 = asus->debug.dev_id,
2032                 .arg1 = asus->debug.ctrl_param,
2033         };
2034         struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2035         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2036         union acpi_object *obj;
2037         acpi_status status;
2038
2039         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2040                                      0, asus->debug.method_id,
2041                                      &input, &output);
2042
2043         if (ACPI_FAILURE(status))
2044                 return -EIO;
2045
2046         obj = (union acpi_object *)output.pointer;
2047         if (obj && obj->type == ACPI_TYPE_INTEGER)
2048                 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2049                            asus->debug.dev_id, asus->debug.ctrl_param,
2050                            (u32) obj->integer.value);
2051         else
2052                 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2053                            asus->debug.dev_id, asus->debug.ctrl_param,
2054                            obj ? obj->type : -1);
2055
2056         kfree(obj);
2057
2058         return 0;
2059 }
2060
2061 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2062         {NULL, "devs", show_devs},
2063         {NULL, "dsts", show_dsts},
2064         {NULL, "call", show_call},
2065 };
2066
2067 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2068 {
2069         struct asus_wmi_debugfs_node *node = inode->i_private;
2070
2071         return single_open(file, node->show, node->asus);
2072 }
2073
2074 static const struct file_operations asus_wmi_debugfs_io_ops = {
2075         .owner = THIS_MODULE,
2076         .open = asus_wmi_debugfs_open,
2077         .read = seq_read,
2078         .llseek = seq_lseek,
2079         .release = single_release,
2080 };
2081
2082 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2083 {
2084         debugfs_remove_recursive(asus->debug.root);
2085 }
2086
2087 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2088 {
2089         struct dentry *dent;
2090         int i;
2091
2092         asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2093         if (!asus->debug.root) {
2094                 pr_err("failed to create debugfs directory\n");
2095                 goto error_debugfs;
2096         }
2097
2098         dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2099                                   asus->debug.root, &asus->debug.method_id);
2100         if (!dent)
2101                 goto error_debugfs;
2102
2103         dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2104                                   asus->debug.root, &asus->debug.dev_id);
2105         if (!dent)
2106                 goto error_debugfs;
2107
2108         dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2109                                   asus->debug.root, &asus->debug.ctrl_param);
2110         if (!dent)
2111                 goto error_debugfs;
2112
2113         for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2114                 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2115
2116                 node->asus = asus;
2117                 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2118                                            asus->debug.root, node,
2119                                            &asus_wmi_debugfs_io_ops);
2120                 if (!dent) {
2121                         pr_err("failed to create debug file: %s\n", node->name);
2122                         goto error_debugfs;
2123                 }
2124         }
2125
2126         return 0;
2127
2128 error_debugfs:
2129         asus_wmi_debugfs_exit(asus);
2130         return -ENOMEM;
2131 }
2132
2133 static int asus_wmi_fan_init(struct asus_wmi *asus)
2134 {
2135         int status;
2136
2137         asus->asus_hwmon_pwm = -1;
2138         asus->asus_hwmon_num_fans = -1;
2139         asus->asus_hwmon_fan_manual_mode = false;
2140
2141         status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2142         if (status) {
2143                 asus->asus_hwmon_num_fans = 0;
2144                 pr_warn("Could not determine number of fans: %d\n", status);
2145                 return -ENXIO;
2146         }
2147
2148         pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2149         return 0;
2150 }
2151
2152 /*
2153  * WMI Driver
2154  */
2155 static int asus_wmi_add(struct platform_device *pdev)
2156 {
2157         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2158         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2159         struct asus_wmi *asus;
2160         const char *chassis_type;
2161         acpi_status status;
2162         int err;
2163         u32 result;
2164
2165         asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2166         if (!asus)
2167                 return -ENOMEM;
2168
2169         asus->driver = wdrv;
2170         asus->platform_device = pdev;
2171         wdrv->platform_device = pdev;
2172         platform_set_drvdata(asus->platform_device, asus);
2173
2174         if (wdrv->detect_quirks)
2175                 wdrv->detect_quirks(asus->driver);
2176
2177         err = asus_wmi_platform_init(asus);
2178         if (err)
2179                 goto fail_platform;
2180
2181         err = asus_wmi_input_init(asus);
2182         if (err)
2183                 goto fail_input;
2184
2185         err = asus_wmi_fan_init(asus); /* probably no problems on error */
2186         asus_hwmon_fan_set_auto(asus);
2187
2188         err = asus_wmi_hwmon_init(asus);
2189         if (err)
2190                 goto fail_hwmon;
2191
2192         err = asus_wmi_led_init(asus);
2193         if (err)
2194                 goto fail_leds;
2195
2196         asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2197         if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2198                 asus->driver->wlan_ctrl_by_user = 1;
2199
2200         if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2201                 err = asus_wmi_rfkill_init(asus);
2202                 if (err)
2203                         goto fail_rfkill;
2204         }
2205
2206         if (asus->driver->quirks->wmi_force_als_set)
2207                 asus_wmi_set_als();
2208
2209         /* Some Asus desktop boards export an acpi-video backlight interface,
2210            stop this from showing up */
2211         chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2212         if (chassis_type && !strcmp(chassis_type, "3"))
2213                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2214
2215         if (asus->driver->quirks->wmi_backlight_power)
2216                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2217
2218         if (asus->driver->quirks->wmi_backlight_native)
2219                 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2220
2221         if (asus->driver->quirks->xusb2pr)
2222                 asus_wmi_set_xusb2pr(asus);
2223
2224         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2225                 err = asus_wmi_backlight_init(asus);
2226                 if (err && err != -ENODEV)
2227                         goto fail_backlight;
2228         }
2229
2230         status = wmi_install_notify_handler(asus->driver->event_guid,
2231                                             asus_wmi_notify, asus);
2232         if (ACPI_FAILURE(status)) {
2233                 pr_err("Unable to register notify handler - %d\n", status);
2234                 err = -ENODEV;
2235                 goto fail_wmi_handler;
2236         }
2237
2238         err = asus_wmi_debugfs_init(asus);
2239         if (err)
2240                 goto fail_debugfs;
2241
2242         return 0;
2243
2244 fail_debugfs:
2245         wmi_remove_notify_handler(asus->driver->event_guid);
2246 fail_wmi_handler:
2247         asus_wmi_backlight_exit(asus);
2248 fail_backlight:
2249         asus_wmi_rfkill_exit(asus);
2250 fail_rfkill:
2251         asus_wmi_led_exit(asus);
2252 fail_leds:
2253 fail_hwmon:
2254         asus_wmi_input_exit(asus);
2255 fail_input:
2256         asus_wmi_platform_exit(asus);
2257 fail_platform:
2258         kfree(asus);
2259         return err;
2260 }
2261
2262 static int asus_wmi_remove(struct platform_device *device)
2263 {
2264         struct asus_wmi *asus;
2265
2266         asus = platform_get_drvdata(device);
2267         wmi_remove_notify_handler(asus->driver->event_guid);
2268         asus_wmi_backlight_exit(asus);
2269         asus_wmi_input_exit(asus);
2270         asus_wmi_led_exit(asus);
2271         asus_wmi_rfkill_exit(asus);
2272         asus_wmi_debugfs_exit(asus);
2273         asus_wmi_platform_exit(asus);
2274         asus_hwmon_fan_set_auto(asus);
2275
2276         kfree(asus);
2277         return 0;
2278 }
2279
2280 /*
2281  * Platform driver - hibernate/resume callbacks
2282  */
2283 static int asus_hotk_thaw(struct device *device)
2284 {
2285         struct asus_wmi *asus = dev_get_drvdata(device);
2286
2287         if (asus->wlan.rfkill) {
2288                 bool wlan;
2289
2290                 /*
2291                  * Work around bios bug - acpi _PTS turns off the wireless led
2292                  * during suspend.  Normally it restores it on resume, but
2293                  * we should kick it ourselves in case hibernation is aborted.
2294                  */
2295                 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2296                 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2297         }
2298
2299         return 0;
2300 }
2301
2302 static int asus_hotk_resume(struct device *device)
2303 {
2304         struct asus_wmi *asus = dev_get_drvdata(device);
2305
2306         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2307                 kbd_led_update(asus);
2308
2309         return 0;
2310 }
2311
2312 static int asus_hotk_restore(struct device *device)
2313 {
2314         struct asus_wmi *asus = dev_get_drvdata(device);
2315         int bl;
2316
2317         /* Refresh both wlan rfkill state and pci hotplug */
2318         if (asus->wlan.rfkill)
2319                 asus_rfkill_hotplug(asus);
2320
2321         if (asus->bluetooth.rfkill) {
2322                 bl = !asus_wmi_get_devstate_simple(asus,
2323                                                    ASUS_WMI_DEVID_BLUETOOTH);
2324                 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2325         }
2326         if (asus->wimax.rfkill) {
2327                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2328                 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2329         }
2330         if (asus->wwan3g.rfkill) {
2331                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2332                 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2333         }
2334         if (asus->gps.rfkill) {
2335                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2336                 rfkill_set_sw_state(asus->gps.rfkill, bl);
2337         }
2338         if (asus->uwb.rfkill) {
2339                 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2340                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2341         }
2342         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2343                 kbd_led_update(asus);
2344
2345         return 0;
2346 }
2347
2348 static const struct dev_pm_ops asus_pm_ops = {
2349         .thaw = asus_hotk_thaw,
2350         .restore = asus_hotk_restore,
2351         .resume = asus_hotk_resume,
2352 };
2353
2354 static int asus_wmi_probe(struct platform_device *pdev)
2355 {
2356         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2357         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2358         int ret;
2359
2360         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2361                 pr_warn("Management GUID not found\n");
2362                 return -ENODEV;
2363         }
2364
2365         if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2366                 pr_warn("Event GUID not found\n");
2367                 return -ENODEV;
2368         }
2369
2370         if (wdrv->probe) {
2371                 ret = wdrv->probe(pdev);
2372                 if (ret)
2373                         return ret;
2374         }
2375
2376         return asus_wmi_add(pdev);
2377 }
2378
2379 static bool used;
2380
2381 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2382 {
2383         struct platform_driver *platform_driver;
2384         struct platform_device *platform_device;
2385
2386         if (used)
2387                 return -EBUSY;
2388
2389         platform_driver = &driver->platform_driver;
2390         platform_driver->remove = asus_wmi_remove;
2391         platform_driver->driver.owner = driver->owner;
2392         platform_driver->driver.name = driver->name;
2393         platform_driver->driver.pm = &asus_pm_ops;
2394
2395         platform_device = platform_create_bundle(platform_driver,
2396                                                  asus_wmi_probe,
2397                                                  NULL, 0, NULL, 0);
2398         if (IS_ERR(platform_device))
2399                 return PTR_ERR(platform_device);
2400
2401         used = true;
2402         return 0;
2403 }
2404 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2405
2406 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2407 {
2408         platform_device_unregister(driver->platform_device);
2409         platform_driver_unregister(&driver->platform_driver);
2410         used = false;
2411 }
2412 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2413
2414 static int __init asus_wmi_init(void)
2415 {
2416         if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2417                 pr_info("Asus Management GUID not found\n");
2418                 return -ENODEV;
2419         }
2420
2421         pr_info("ASUS WMI generic driver loaded\n");
2422         return 0;
2423 }
2424
2425 static void __exit asus_wmi_exit(void)
2426 {
2427         pr_info("ASUS WMI generic driver unloaded\n");
2428 }
2429
2430 module_init(asus_wmi_init);
2431 module_exit(asus_wmi_exit);