]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/platform/x86/asus-wmi.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
asus-wmi: control wlan-led only if wapf == 4
[mirror_ubuntu-bionic-kernel.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 <acpi/acpi_bus.h>
49 #include <acpi/acpi_drivers.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_platform_driver(drv) \
60 (container_of((drv), struct platform_driver, driver))
61
62 #define to_asus_wmi_driver(pdrv) \
63 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
64
65 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
66
67 #define NOTIFY_BRNUP_MIN 0x11
68 #define NOTIFY_BRNUP_MAX 0x1f
69 #define NOTIFY_BRNDOWN_MIN 0x20
70 #define NOTIFY_BRNDOWN_MAX 0x2e
71 #define NOTIFY_KBD_BRTUP 0xc4
72 #define NOTIFY_KBD_BRTDWN 0xc5
73
74 /* WMI Methods */
75 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
76 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
77 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
78 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
79 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
80 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
81 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
82 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
83 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
84 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
85 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
86 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
87 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
88 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
89 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
90 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
91 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
92 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
93 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
94
95 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
96
97 /* Wireless */
98 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
99 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
100 #define ASUS_WMI_DEVID_CWAP 0x00010003
101 #define ASUS_WMI_DEVID_WLAN 0x00010011
102 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
103 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
104 #define ASUS_WMI_DEVID_GPS 0x00010015
105 #define ASUS_WMI_DEVID_WIMAX 0x00010017
106 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
107 #define ASUS_WMI_DEVID_UWB 0x00010021
108
109 /* Leds */
110 /* 0x000200XX and 0x000400XX */
111 #define ASUS_WMI_DEVID_LED1 0x00020011
112 #define ASUS_WMI_DEVID_LED2 0x00020012
113 #define ASUS_WMI_DEVID_LED3 0x00020013
114 #define ASUS_WMI_DEVID_LED4 0x00020014
115 #define ASUS_WMI_DEVID_LED5 0x00020015
116 #define ASUS_WMI_DEVID_LED6 0x00020016
117
118 /* Backlight and Brightness */
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
124 /* Misc */
125 #define ASUS_WMI_DEVID_CAMERA 0x00060013
126
127 /* Storage */
128 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
129
130 /* Input */
131 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
132 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
133
134 /* Fan, Thermal */
135 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
136 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
137
138 /* Power */
139 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
140
141 /* Deep S3 / Resume on LID open */
142 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
143
144 /* DSTS masks */
145 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
146 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
147 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
148 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
149 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
150 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
151 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
152
153 struct bios_args {
154 u32 arg0;
155 u32 arg1;
156 } __packed;
157
158 /*
159 * <platform>/ - debugfs root directory
160 * dev_id - current dev_id
161 * ctrl_param - current ctrl_param
162 * method_id - current method_id
163 * devs - call DEVS(dev_id, ctrl_param) and print result
164 * dsts - call DSTS(dev_id) and print result
165 * call - call method_id(dev_id, ctrl_param) and print result
166 */
167 struct asus_wmi_debug {
168 struct dentry *root;
169 u32 method_id;
170 u32 dev_id;
171 u32 ctrl_param;
172 };
173
174 struct asus_rfkill {
175 struct asus_wmi *asus;
176 struct rfkill *rfkill;
177 u32 dev_id;
178 };
179
180 struct asus_wmi {
181 int dsts_id;
182 int spec;
183 int sfun;
184
185 struct input_dev *inputdev;
186 struct backlight_device *backlight_device;
187 struct device *hwmon_device;
188 struct platform_device *platform_device;
189
190 struct led_classdev wlan_led;
191 int wlan_led_wk;
192 struct led_classdev tpd_led;
193 int tpd_led_wk;
194 struct led_classdev kbd_led;
195 int kbd_led_wk;
196 struct workqueue_struct *led_workqueue;
197 struct work_struct tpd_led_work;
198 struct work_struct kbd_led_work;
199 struct work_struct wlan_led_work;
200
201 struct asus_rfkill wlan;
202 struct asus_rfkill bluetooth;
203 struct asus_rfkill wimax;
204 struct asus_rfkill wwan3g;
205 struct asus_rfkill gps;
206 struct asus_rfkill uwb;
207
208 struct hotplug_slot *hotplug_slot;
209 struct mutex hotplug_lock;
210 struct mutex wmi_lock;
211 struct workqueue_struct *hotplug_workqueue;
212 struct work_struct hotplug_work;
213
214 struct asus_wmi_debug debug;
215
216 struct asus_wmi_driver *driver;
217 };
218
219 static int asus_wmi_input_init(struct asus_wmi *asus)
220 {
221 int err;
222
223 asus->inputdev = input_allocate_device();
224 if (!asus->inputdev)
225 return -ENOMEM;
226
227 asus->inputdev->name = asus->driver->input_name;
228 asus->inputdev->phys = asus->driver->input_phys;
229 asus->inputdev->id.bustype = BUS_HOST;
230 asus->inputdev->dev.parent = &asus->platform_device->dev;
231 set_bit(EV_REP, asus->inputdev->evbit);
232
233 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
234 if (err)
235 goto err_free_dev;
236
237 err = input_register_device(asus->inputdev);
238 if (err)
239 goto err_free_keymap;
240
241 return 0;
242
243 err_free_keymap:
244 sparse_keymap_free(asus->inputdev);
245 err_free_dev:
246 input_free_device(asus->inputdev);
247 return err;
248 }
249
250 static void asus_wmi_input_exit(struct asus_wmi *asus)
251 {
252 if (asus->inputdev) {
253 sparse_keymap_free(asus->inputdev);
254 input_unregister_device(asus->inputdev);
255 }
256
257 asus->inputdev = NULL;
258 }
259
260 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
261 u32 *retval)
262 {
263 struct bios_args args = {
264 .arg0 = arg0,
265 .arg1 = arg1,
266 };
267 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
268 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
269 acpi_status status;
270 union acpi_object *obj;
271 u32 tmp;
272
273 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
274 &input, &output);
275
276 if (ACPI_FAILURE(status))
277 goto exit;
278
279 obj = (union acpi_object *)output.pointer;
280 if (obj && obj->type == ACPI_TYPE_INTEGER)
281 tmp = (u32) obj->integer.value;
282 else
283 tmp = 0;
284
285 if (retval)
286 *retval = tmp;
287
288 kfree(obj);
289
290 exit:
291 if (ACPI_FAILURE(status))
292 return -EIO;
293
294 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
295 return -ENODEV;
296
297 return 0;
298 }
299
300 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
301 {
302 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
303 }
304
305 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
306 u32 *retval)
307 {
308 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
309 ctrl_param, retval);
310 }
311
312 /* Helper for special devices with magic return codes */
313 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
314 u32 dev_id, u32 mask)
315 {
316 u32 retval = 0;
317 int err;
318
319 err = asus_wmi_get_devstate(asus, dev_id, &retval);
320
321 if (err < 0)
322 return err;
323
324 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
325 return -ENODEV;
326
327 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
328 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
329 return -ENODEV;
330 }
331
332 return retval & mask;
333 }
334
335 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
336 {
337 return asus_wmi_get_devstate_bits(asus, dev_id,
338 ASUS_WMI_DSTS_STATUS_BIT);
339 }
340
341 /*
342 * LEDs
343 */
344 /*
345 * These functions actually update the LED's, and are called from a
346 * workqueue. By doing this as separate work rather than when the LED
347 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
348 * potentially bad time, such as a timer interrupt.
349 */
350 static void tpd_led_update(struct work_struct *work)
351 {
352 int ctrl_param;
353 struct asus_wmi *asus;
354
355 asus = container_of(work, struct asus_wmi, tpd_led_work);
356
357 ctrl_param = asus->tpd_led_wk;
358 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
359 }
360
361 static void tpd_led_set(struct led_classdev *led_cdev,
362 enum led_brightness value)
363 {
364 struct asus_wmi *asus;
365
366 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
367
368 asus->tpd_led_wk = !!value;
369 queue_work(asus->led_workqueue, &asus->tpd_led_work);
370 }
371
372 static int read_tpd_led_state(struct asus_wmi *asus)
373 {
374 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
375 }
376
377 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
378 {
379 struct asus_wmi *asus;
380
381 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
382
383 return read_tpd_led_state(asus);
384 }
385
386 static void kbd_led_update(struct work_struct *work)
387 {
388 int ctrl_param = 0;
389 struct asus_wmi *asus;
390
391 asus = container_of(work, struct asus_wmi, kbd_led_work);
392
393 /*
394 * bits 0-2: level
395 * bit 7: light on/off
396 */
397 if (asus->kbd_led_wk > 0)
398 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
399
400 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
401 }
402
403 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
404 {
405 int retval;
406
407 /*
408 * bits 0-2: level
409 * bit 7: light on/off
410 * bit 8-10: environment (0: dark, 1: normal, 2: light)
411 * bit 17: status unknown
412 */
413 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
414 0xFFFF);
415
416 /* Unknown status is considered as off */
417 if (retval == 0x8000)
418 retval = 0;
419
420 if (retval >= 0) {
421 if (level)
422 *level = retval & 0x7F;
423 if (env)
424 *env = (retval >> 8) & 0x7F;
425 retval = 0;
426 }
427
428 return retval;
429 }
430
431 static void kbd_led_set(struct led_classdev *led_cdev,
432 enum led_brightness value)
433 {
434 struct asus_wmi *asus;
435
436 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
437
438 if (value > asus->kbd_led.max_brightness)
439 value = asus->kbd_led.max_brightness;
440 else if (value < 0)
441 value = 0;
442
443 asus->kbd_led_wk = value;
444 queue_work(asus->led_workqueue, &asus->kbd_led_work);
445 }
446
447 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
448 {
449 struct asus_wmi *asus;
450 int retval, value;
451
452 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
453
454 retval = kbd_led_read(asus, &value, NULL);
455
456 if (retval < 0)
457 return retval;
458
459 return value;
460 }
461
462 static int wlan_led_unknown_state(struct asus_wmi *asus)
463 {
464 u32 result;
465
466 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
467
468 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
469 }
470
471 static int wlan_led_presence(struct asus_wmi *asus)
472 {
473 u32 result;
474
475 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
476
477 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
478 }
479
480 static void wlan_led_update(struct work_struct *work)
481 {
482 int ctrl_param;
483 struct asus_wmi *asus;
484
485 asus = container_of(work, struct asus_wmi, wlan_led_work);
486
487 ctrl_param = asus->wlan_led_wk;
488 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
489 }
490
491 static void wlan_led_set(struct led_classdev *led_cdev,
492 enum led_brightness value)
493 {
494 struct asus_wmi *asus;
495
496 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
497
498 asus->wlan_led_wk = !!value;
499 queue_work(asus->led_workqueue, &asus->wlan_led_work);
500 }
501
502 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
503 {
504 struct asus_wmi *asus;
505 u32 result;
506
507 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
508 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
509
510 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
511 }
512
513 static void asus_wmi_led_exit(struct asus_wmi *asus)
514 {
515 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
516 led_classdev_unregister(&asus->kbd_led);
517 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
518 led_classdev_unregister(&asus->tpd_led);
519 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
520 led_classdev_unregister(&asus->wlan_led);
521 if (asus->led_workqueue)
522 destroy_workqueue(asus->led_workqueue);
523 }
524
525 static int asus_wmi_led_init(struct asus_wmi *asus)
526 {
527 int rv = 0;
528
529 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
530 if (!asus->led_workqueue)
531 return -ENOMEM;
532
533 if (read_tpd_led_state(asus) >= 0) {
534 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
535
536 asus->tpd_led.name = "asus::touchpad";
537 asus->tpd_led.brightness_set = tpd_led_set;
538 asus->tpd_led.brightness_get = tpd_led_get;
539 asus->tpd_led.max_brightness = 1;
540
541 rv = led_classdev_register(&asus->platform_device->dev,
542 &asus->tpd_led);
543 if (rv)
544 goto error;
545 }
546
547 if (kbd_led_read(asus, NULL, NULL) >= 0) {
548 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
549
550 asus->kbd_led.name = "asus::kbd_backlight";
551 asus->kbd_led.brightness_set = kbd_led_set;
552 asus->kbd_led.brightness_get = kbd_led_get;
553 asus->kbd_led.max_brightness = 3;
554
555 rv = led_classdev_register(&asus->platform_device->dev,
556 &asus->kbd_led);
557 if (rv)
558 goto error;
559 }
560
561 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf == 4)) {
562 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
563
564 asus->wlan_led.name = "asus::wlan";
565 asus->wlan_led.brightness_set = wlan_led_set;
566 if (!wlan_led_unknown_state(asus))
567 asus->wlan_led.brightness_get = wlan_led_get;
568 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
569 asus->wlan_led.max_brightness = 1;
570 asus->wlan_led.default_trigger = "asus-wlan";
571
572 rv = led_classdev_register(&asus->platform_device->dev,
573 &asus->wlan_led);
574 }
575
576 error:
577 if (rv)
578 asus_wmi_led_exit(asus);
579
580 return rv;
581 }
582
583
584 /*
585 * PCI hotplug (for wlan rfkill)
586 */
587 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
588 {
589 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
590
591 if (result < 0)
592 return false;
593 return !result;
594 }
595
596 static void asus_rfkill_hotplug(struct asus_wmi *asus)
597 {
598 struct pci_dev *dev;
599 struct pci_bus *bus;
600 bool blocked;
601 bool absent;
602 u32 l;
603
604 mutex_lock(&asus->wmi_lock);
605 blocked = asus_wlan_rfkill_blocked(asus);
606 mutex_unlock(&asus->wmi_lock);
607
608 mutex_lock(&asus->hotplug_lock);
609
610 if (asus->wlan.rfkill)
611 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
612
613 if (asus->hotplug_slot) {
614 bus = pci_find_bus(0, 1);
615 if (!bus) {
616 pr_warn("Unable to find PCI bus 1?\n");
617 goto out_unlock;
618 }
619
620 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
621 pr_err("Unable to read PCI config space?\n");
622 goto out_unlock;
623 }
624 absent = (l == 0xffffffff);
625
626 if (blocked != absent) {
627 pr_warn("BIOS says wireless lan is %s, "
628 "but the pci device is %s\n",
629 blocked ? "blocked" : "unblocked",
630 absent ? "absent" : "present");
631 pr_warn("skipped wireless hotplug as probably "
632 "inappropriate for this model\n");
633 goto out_unlock;
634 }
635
636 if (!blocked) {
637 dev = pci_get_slot(bus, 0);
638 if (dev) {
639 /* Device already present */
640 pci_dev_put(dev);
641 goto out_unlock;
642 }
643 dev = pci_scan_single_device(bus, 0);
644 if (dev) {
645 pci_bus_assign_resources(bus);
646 if (pci_bus_add_device(dev))
647 pr_err("Unable to hotplug wifi\n");
648 }
649 } else {
650 dev = pci_get_slot(bus, 0);
651 if (dev) {
652 pci_stop_and_remove_bus_device(dev);
653 pci_dev_put(dev);
654 }
655 }
656 }
657
658 out_unlock:
659 mutex_unlock(&asus->hotplug_lock);
660 }
661
662 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
663 {
664 struct asus_wmi *asus = data;
665
666 if (event != ACPI_NOTIFY_BUS_CHECK)
667 return;
668
669 /*
670 * We can't call directly asus_rfkill_hotplug because most
671 * of the time WMBC is still being executed and not reetrant.
672 * There is currently no way to tell ACPICA that we want this
673 * method to be serialized, we schedule a asus_rfkill_hotplug
674 * call later, in a safer context.
675 */
676 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
677 }
678
679 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
680 {
681 acpi_status status;
682 acpi_handle handle;
683
684 status = acpi_get_handle(NULL, node, &handle);
685
686 if (ACPI_SUCCESS(status)) {
687 status = acpi_install_notify_handler(handle,
688 ACPI_SYSTEM_NOTIFY,
689 asus_rfkill_notify, asus);
690 if (ACPI_FAILURE(status))
691 pr_warn("Failed to register notify on %s\n", node);
692 } else
693 return -ENODEV;
694
695 return 0;
696 }
697
698 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
699 {
700 acpi_status status = AE_OK;
701 acpi_handle handle;
702
703 status = acpi_get_handle(NULL, node, &handle);
704
705 if (ACPI_SUCCESS(status)) {
706 status = acpi_remove_notify_handler(handle,
707 ACPI_SYSTEM_NOTIFY,
708 asus_rfkill_notify);
709 if (ACPI_FAILURE(status))
710 pr_err("Error removing rfkill notify handler %s\n",
711 node);
712 }
713 }
714
715 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
716 u8 *value)
717 {
718 struct asus_wmi *asus = hotplug_slot->private;
719 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
720
721 if (result < 0)
722 return result;
723
724 *value = !!result;
725 return 0;
726 }
727
728 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
729 {
730 kfree(hotplug_slot->info);
731 kfree(hotplug_slot);
732 }
733
734 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
735 .owner = THIS_MODULE,
736 .get_adapter_status = asus_get_adapter_status,
737 .get_power_status = asus_get_adapter_status,
738 };
739
740 static void asus_hotplug_work(struct work_struct *work)
741 {
742 struct asus_wmi *asus;
743
744 asus = container_of(work, struct asus_wmi, hotplug_work);
745 asus_rfkill_hotplug(asus);
746 }
747
748 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
749 {
750 int ret = -ENOMEM;
751 struct pci_bus *bus = pci_find_bus(0, 1);
752
753 if (!bus) {
754 pr_err("Unable to find wifi PCI bus\n");
755 return -ENODEV;
756 }
757
758 asus->hotplug_workqueue =
759 create_singlethread_workqueue("hotplug_workqueue");
760 if (!asus->hotplug_workqueue)
761 goto error_workqueue;
762
763 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
764
765 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
766 if (!asus->hotplug_slot)
767 goto error_slot;
768
769 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
770 GFP_KERNEL);
771 if (!asus->hotplug_slot->info)
772 goto error_info;
773
774 asus->hotplug_slot->private = asus;
775 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
776 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
777 asus_get_adapter_status(asus->hotplug_slot,
778 &asus->hotplug_slot->info->adapter_status);
779
780 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
781 if (ret) {
782 pr_err("Unable to register hotplug slot - %d\n", ret);
783 goto error_register;
784 }
785
786 return 0;
787
788 error_register:
789 kfree(asus->hotplug_slot->info);
790 error_info:
791 kfree(asus->hotplug_slot);
792 asus->hotplug_slot = NULL;
793 error_slot:
794 destroy_workqueue(asus->hotplug_workqueue);
795 error_workqueue:
796 return ret;
797 }
798
799 /*
800 * Rfkill devices
801 */
802 static int asus_rfkill_set(void *data, bool blocked)
803 {
804 struct asus_rfkill *priv = data;
805 u32 ctrl_param = !blocked;
806 u32 dev_id = priv->dev_id;
807
808 /*
809 * If the user bit is set, BIOS can't set and record the wlan status,
810 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
811 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
812 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
813 * while setting the wlan status through WMI.
814 * This is also the behavior that windows app will do.
815 */
816 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
817 priv->asus->driver->wlan_ctrl_by_user)
818 dev_id = ASUS_WMI_DEVID_WLAN_LED;
819
820 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
821 }
822
823 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
824 {
825 struct asus_rfkill *priv = data;
826 int result;
827
828 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
829
830 if (result < 0)
831 return;
832
833 rfkill_set_sw_state(priv->rfkill, !result);
834 }
835
836 static int asus_rfkill_wlan_set(void *data, bool blocked)
837 {
838 struct asus_rfkill *priv = data;
839 struct asus_wmi *asus = priv->asus;
840 int ret;
841
842 /*
843 * This handler is enabled only if hotplug is enabled.
844 * In this case, the asus_wmi_set_devstate() will
845 * trigger a wmi notification and we need to wait
846 * this call to finish before being able to call
847 * any wmi method
848 */
849 mutex_lock(&asus->wmi_lock);
850 ret = asus_rfkill_set(data, blocked);
851 mutex_unlock(&asus->wmi_lock);
852 return ret;
853 }
854
855 static const struct rfkill_ops asus_rfkill_wlan_ops = {
856 .set_block = asus_rfkill_wlan_set,
857 .query = asus_rfkill_query,
858 };
859
860 static const struct rfkill_ops asus_rfkill_ops = {
861 .set_block = asus_rfkill_set,
862 .query = asus_rfkill_query,
863 };
864
865 static int asus_new_rfkill(struct asus_wmi *asus,
866 struct asus_rfkill *arfkill,
867 const char *name, enum rfkill_type type, int dev_id)
868 {
869 int result = asus_wmi_get_devstate_simple(asus, dev_id);
870 struct rfkill **rfkill = &arfkill->rfkill;
871
872 if (result < 0)
873 return result;
874
875 arfkill->dev_id = dev_id;
876 arfkill->asus = asus;
877
878 if (dev_id == ASUS_WMI_DEVID_WLAN &&
879 asus->driver->quirks->hotplug_wireless)
880 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
881 &asus_rfkill_wlan_ops, arfkill);
882 else
883 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
884 &asus_rfkill_ops, arfkill);
885
886 if (!*rfkill)
887 return -EINVAL;
888
889 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
890 (asus->driver->quirks->wapf == 4))
891 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
892
893 rfkill_init_sw_state(*rfkill, !result);
894 result = rfkill_register(*rfkill);
895 if (result) {
896 rfkill_destroy(*rfkill);
897 *rfkill = NULL;
898 return result;
899 }
900 return 0;
901 }
902
903 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
904 {
905 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
906 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
907 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
908 if (asus->wlan.rfkill) {
909 rfkill_unregister(asus->wlan.rfkill);
910 rfkill_destroy(asus->wlan.rfkill);
911 asus->wlan.rfkill = NULL;
912 }
913 /*
914 * Refresh pci hotplug in case the rfkill state was changed after
915 * asus_unregister_rfkill_notifier()
916 */
917 asus_rfkill_hotplug(asus);
918 if (asus->hotplug_slot)
919 pci_hp_deregister(asus->hotplug_slot);
920 if (asus->hotplug_workqueue)
921 destroy_workqueue(asus->hotplug_workqueue);
922
923 if (asus->bluetooth.rfkill) {
924 rfkill_unregister(asus->bluetooth.rfkill);
925 rfkill_destroy(asus->bluetooth.rfkill);
926 asus->bluetooth.rfkill = NULL;
927 }
928 if (asus->wimax.rfkill) {
929 rfkill_unregister(asus->wimax.rfkill);
930 rfkill_destroy(asus->wimax.rfkill);
931 asus->wimax.rfkill = NULL;
932 }
933 if (asus->wwan3g.rfkill) {
934 rfkill_unregister(asus->wwan3g.rfkill);
935 rfkill_destroy(asus->wwan3g.rfkill);
936 asus->wwan3g.rfkill = NULL;
937 }
938 if (asus->gps.rfkill) {
939 rfkill_unregister(asus->gps.rfkill);
940 rfkill_destroy(asus->gps.rfkill);
941 asus->gps.rfkill = NULL;
942 }
943 if (asus->uwb.rfkill) {
944 rfkill_unregister(asus->uwb.rfkill);
945 rfkill_destroy(asus->uwb.rfkill);
946 asus->uwb.rfkill = NULL;
947 }
948 }
949
950 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
951 {
952 int result = 0;
953
954 mutex_init(&asus->hotplug_lock);
955 mutex_init(&asus->wmi_lock);
956
957 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
958 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
959
960 if (result && result != -ENODEV)
961 goto exit;
962
963 result = asus_new_rfkill(asus, &asus->bluetooth,
964 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
965 ASUS_WMI_DEVID_BLUETOOTH);
966
967 if (result && result != -ENODEV)
968 goto exit;
969
970 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
971 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
972
973 if (result && result != -ENODEV)
974 goto exit;
975
976 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
977 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
978
979 if (result && result != -ENODEV)
980 goto exit;
981
982 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
983 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
984
985 if (result && result != -ENODEV)
986 goto exit;
987
988 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
989 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
990
991 if (result && result != -ENODEV)
992 goto exit;
993
994 if (!asus->driver->quirks->hotplug_wireless)
995 goto exit;
996
997 result = asus_setup_pci_hotplug(asus);
998 /*
999 * If we get -EBUSY then something else is handling the PCI hotplug -
1000 * don't fail in this case
1001 */
1002 if (result == -EBUSY)
1003 result = 0;
1004
1005 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1006 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1007 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1008 /*
1009 * Refresh pci hotplug in case the rfkill state was changed during
1010 * setup.
1011 */
1012 asus_rfkill_hotplug(asus);
1013
1014 exit:
1015 if (result && result != -ENODEV)
1016 asus_wmi_rfkill_exit(asus);
1017
1018 if (result == -ENODEV)
1019 result = 0;
1020
1021 return result;
1022 }
1023
1024 /*
1025 * Hwmon device
1026 */
1027 static ssize_t asus_hwmon_pwm1(struct device *dev,
1028 struct device_attribute *attr,
1029 char *buf)
1030 {
1031 struct asus_wmi *asus = dev_get_drvdata(dev);
1032 u32 value;
1033 int err;
1034
1035 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1036
1037 if (err < 0)
1038 return err;
1039
1040 value &= 0xFF;
1041
1042 if (value == 1) /* Low Speed */
1043 value = 85;
1044 else if (value == 2)
1045 value = 170;
1046 else if (value == 3)
1047 value = 255;
1048 else if (value != 0) {
1049 pr_err("Unknown fan speed %#x\n", value);
1050 value = -1;
1051 }
1052
1053 return sprintf(buf, "%d\n", value);
1054 }
1055
1056 static ssize_t asus_hwmon_temp1(struct device *dev,
1057 struct device_attribute *attr,
1058 char *buf)
1059 {
1060 struct asus_wmi *asus = dev_get_drvdata(dev);
1061 u32 value;
1062 int err;
1063
1064 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1065
1066 if (err < 0)
1067 return err;
1068
1069 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1070
1071 return sprintf(buf, "%d\n", value);
1072 }
1073
1074 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
1075 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
1076
1077 static ssize_t
1078 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1079 {
1080 return sprintf(buf, "asus\n");
1081 }
1082 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1083
1084 static struct attribute *hwmon_attributes[] = {
1085 &sensor_dev_attr_pwm1.dev_attr.attr,
1086 &sensor_dev_attr_temp1_input.dev_attr.attr,
1087 &sensor_dev_attr_name.dev_attr.attr,
1088 NULL
1089 };
1090
1091 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1092 struct attribute *attr, int idx)
1093 {
1094 struct device *dev = container_of(kobj, struct device, kobj);
1095 struct platform_device *pdev = to_platform_device(dev->parent);
1096 struct asus_wmi *asus = platform_get_drvdata(pdev);
1097 bool ok = true;
1098 int dev_id = -1;
1099 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1100
1101 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1102 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1103 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1104 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1105
1106 if (dev_id != -1) {
1107 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1108
1109 if (err < 0)
1110 return 0; /* can't return negative here */
1111 }
1112
1113 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1114 /*
1115 * We need to find a better way, probably using sfun,
1116 * bits or spec ...
1117 * Currently we disable it if:
1118 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1119 * - reverved bits are non-zero
1120 * - sfun and presence bit are not set
1121 */
1122 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1123 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1124 ok = false;
1125 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1126 /* If value is zero, something is clearly wrong */
1127 if (value == 0)
1128 ok = false;
1129 }
1130
1131 return ok ? attr->mode : 0;
1132 }
1133
1134 static struct attribute_group hwmon_attribute_group = {
1135 .is_visible = asus_hwmon_sysfs_is_visible,
1136 .attrs = hwmon_attributes
1137 };
1138
1139 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1140 {
1141 struct device *hwmon;
1142
1143 hwmon = asus->hwmon_device;
1144 if (!hwmon)
1145 return;
1146 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1147 hwmon_device_unregister(hwmon);
1148 asus->hwmon_device = NULL;
1149 }
1150
1151 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1152 {
1153 struct device *hwmon;
1154 int result;
1155
1156 hwmon = hwmon_device_register(&asus->platform_device->dev);
1157 if (IS_ERR(hwmon)) {
1158 pr_err("Could not register asus hwmon device\n");
1159 return PTR_ERR(hwmon);
1160 }
1161 dev_set_drvdata(hwmon, asus);
1162 asus->hwmon_device = hwmon;
1163 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1164 if (result)
1165 asus_wmi_hwmon_exit(asus);
1166 return result;
1167 }
1168
1169 /*
1170 * Backlight
1171 */
1172 static int read_backlight_power(struct asus_wmi *asus)
1173 {
1174 int ret;
1175 if (asus->driver->quirks->store_backlight_power)
1176 ret = !asus->driver->panel_power;
1177 else
1178 ret = asus_wmi_get_devstate_simple(asus,
1179 ASUS_WMI_DEVID_BACKLIGHT);
1180
1181 if (ret < 0)
1182 return ret;
1183
1184 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1185 }
1186
1187 static int read_brightness_max(struct asus_wmi *asus)
1188 {
1189 u32 retval;
1190 int err;
1191
1192 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1193
1194 if (err < 0)
1195 return err;
1196
1197 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1198 retval >>= 8;
1199
1200 if (!retval)
1201 return -ENODEV;
1202
1203 return retval;
1204 }
1205
1206 static int read_brightness(struct backlight_device *bd)
1207 {
1208 struct asus_wmi *asus = bl_get_data(bd);
1209 u32 retval;
1210 int err;
1211
1212 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1213
1214 if (err < 0)
1215 return err;
1216
1217 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1218 }
1219
1220 static u32 get_scalar_command(struct backlight_device *bd)
1221 {
1222 struct asus_wmi *asus = bl_get_data(bd);
1223 u32 ctrl_param = 0;
1224
1225 if ((asus->driver->brightness < bd->props.brightness) ||
1226 bd->props.brightness == bd->props.max_brightness)
1227 ctrl_param = 0x00008001;
1228 else if ((asus->driver->brightness > bd->props.brightness) ||
1229 bd->props.brightness == 0)
1230 ctrl_param = 0x00008000;
1231
1232 asus->driver->brightness = bd->props.brightness;
1233
1234 return ctrl_param;
1235 }
1236
1237 static int update_bl_status(struct backlight_device *bd)
1238 {
1239 struct asus_wmi *asus = bl_get_data(bd);
1240 u32 ctrl_param;
1241 int power, err = 0;
1242
1243 power = read_backlight_power(asus);
1244 if (power != -ENODEV && bd->props.power != power) {
1245 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1246 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1247 ctrl_param, NULL);
1248 if (asus->driver->quirks->store_backlight_power)
1249 asus->driver->panel_power = bd->props.power;
1250
1251 /* When using scalar brightness, updating the brightness
1252 * will mess with the backlight power */
1253 if (asus->driver->quirks->scalar_panel_brightness)
1254 return err;
1255 }
1256
1257 if (asus->driver->quirks->scalar_panel_brightness)
1258 ctrl_param = get_scalar_command(bd);
1259 else
1260 ctrl_param = bd->props.brightness;
1261
1262 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1263 ctrl_param, NULL);
1264
1265 return err;
1266 }
1267
1268 static const struct backlight_ops asus_wmi_bl_ops = {
1269 .get_brightness = read_brightness,
1270 .update_status = update_bl_status,
1271 };
1272
1273 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1274 {
1275 struct backlight_device *bd = asus->backlight_device;
1276 int old = bd->props.brightness;
1277 int new = old;
1278
1279 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1280 new = code - NOTIFY_BRNUP_MIN + 1;
1281 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1282 new = code - NOTIFY_BRNDOWN_MIN;
1283
1284 bd->props.brightness = new;
1285 backlight_update_status(bd);
1286 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1287
1288 return old;
1289 }
1290
1291 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1292 {
1293 struct backlight_device *bd;
1294 struct backlight_properties props;
1295 int max;
1296 int power;
1297
1298 max = read_brightness_max(asus);
1299
1300 if (max == -ENODEV)
1301 max = 0;
1302 else if (max < 0)
1303 return max;
1304
1305 power = read_backlight_power(asus);
1306
1307 if (power == -ENODEV)
1308 power = FB_BLANK_UNBLANK;
1309 else if (power < 0)
1310 return power;
1311
1312 memset(&props, 0, sizeof(struct backlight_properties));
1313 props.type = BACKLIGHT_PLATFORM;
1314 props.max_brightness = max;
1315 bd = backlight_device_register(asus->driver->name,
1316 &asus->platform_device->dev, asus,
1317 &asus_wmi_bl_ops, &props);
1318 if (IS_ERR(bd)) {
1319 pr_err("Could not register backlight device\n");
1320 return PTR_ERR(bd);
1321 }
1322
1323 asus->backlight_device = bd;
1324
1325 if (asus->driver->quirks->store_backlight_power)
1326 asus->driver->panel_power = power;
1327
1328 bd->props.brightness = read_brightness(bd);
1329 bd->props.power = power;
1330 backlight_update_status(bd);
1331
1332 asus->driver->brightness = bd->props.brightness;
1333
1334 return 0;
1335 }
1336
1337 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1338 {
1339 if (asus->backlight_device)
1340 backlight_device_unregister(asus->backlight_device);
1341
1342 asus->backlight_device = NULL;
1343 }
1344
1345 static int is_display_toggle(int code)
1346 {
1347 /* display toggle keys */
1348 if ((code >= 0x61 && code <= 0x67) ||
1349 (code >= 0x8c && code <= 0x93) ||
1350 (code >= 0xa0 && code <= 0xa7) ||
1351 (code >= 0xd0 && code <= 0xd5))
1352 return 1;
1353
1354 return 0;
1355 }
1356
1357 static void asus_wmi_notify(u32 value, void *context)
1358 {
1359 struct asus_wmi *asus = context;
1360 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1361 union acpi_object *obj;
1362 acpi_status status;
1363 int code;
1364 int orig_code;
1365 unsigned int key_value = 1;
1366 bool autorelease = 1;
1367
1368 status = wmi_get_event_data(value, &response);
1369 if (status != AE_OK) {
1370 pr_err("bad event status 0x%x\n", status);
1371 return;
1372 }
1373
1374 obj = (union acpi_object *)response.pointer;
1375
1376 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1377 goto exit;
1378
1379 code = obj->integer.value;
1380 orig_code = code;
1381
1382 if (asus->driver->key_filter) {
1383 asus->driver->key_filter(asus->driver, &code, &key_value,
1384 &autorelease);
1385 if (code == ASUS_WMI_KEY_IGNORE)
1386 goto exit;
1387 }
1388
1389 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1390 code = ASUS_WMI_BRN_UP;
1391 else if (code >= NOTIFY_BRNDOWN_MIN &&
1392 code <= NOTIFY_BRNDOWN_MAX)
1393 code = ASUS_WMI_BRN_DOWN;
1394
1395 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1396 if (!acpi_video_backlight_support()) {
1397 asus_wmi_backlight_notify(asus, orig_code);
1398 goto exit;
1399 }
1400 }
1401
1402 if (is_display_toggle(code) &&
1403 asus->driver->quirks->no_display_toggle)
1404 goto exit;
1405
1406 if (!sparse_keymap_report_event(asus->inputdev, code,
1407 key_value, autorelease))
1408 pr_info("Unknown key %x pressed\n", code);
1409
1410 exit:
1411 kfree(obj);
1412 }
1413
1414 /*
1415 * Sys helpers
1416 */
1417 static int parse_arg(const char *buf, unsigned long count, int *val)
1418 {
1419 if (!count)
1420 return 0;
1421 if (sscanf(buf, "%i", val) != 1)
1422 return -EINVAL;
1423 return count;
1424 }
1425
1426 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1427 const char *buf, size_t count)
1428 {
1429 u32 retval;
1430 int rv, err, value;
1431
1432 value = asus_wmi_get_devstate_simple(asus, devid);
1433 if (value == -ENODEV) /* Check device presence */
1434 return value;
1435
1436 rv = parse_arg(buf, count, &value);
1437 err = asus_wmi_set_devstate(devid, value, &retval);
1438
1439 if (err < 0)
1440 return err;
1441
1442 return rv;
1443 }
1444
1445 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1446 {
1447 int value = asus_wmi_get_devstate_simple(asus, devid);
1448
1449 if (value < 0)
1450 return value;
1451
1452 return sprintf(buf, "%d\n", value);
1453 }
1454
1455 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1456 static ssize_t show_##_name(struct device *dev, \
1457 struct device_attribute *attr, \
1458 char *buf) \
1459 { \
1460 struct asus_wmi *asus = dev_get_drvdata(dev); \
1461 \
1462 return show_sys_wmi(asus, _cm, buf); \
1463 } \
1464 static ssize_t store_##_name(struct device *dev, \
1465 struct device_attribute *attr, \
1466 const char *buf, size_t count) \
1467 { \
1468 struct asus_wmi *asus = dev_get_drvdata(dev); \
1469 \
1470 return store_sys_wmi(asus, _cm, buf, count); \
1471 } \
1472 static struct device_attribute dev_attr_##_name = { \
1473 .attr = { \
1474 .name = __stringify(_name), \
1475 .mode = _mode }, \
1476 .show = show_##_name, \
1477 .store = store_##_name, \
1478 }
1479
1480 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1481 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1482 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1483 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1484
1485 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1486 const char *buf, size_t count)
1487 {
1488 int value, rv;
1489
1490 if (!count || sscanf(buf, "%i", &value) != 1)
1491 return -EINVAL;
1492 if (value < 0 || value > 2)
1493 return -EINVAL;
1494
1495 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1496 if (rv < 0)
1497 return rv;
1498
1499 return count;
1500 }
1501
1502 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1503
1504 static struct attribute *platform_attributes[] = {
1505 &dev_attr_cpufv.attr,
1506 &dev_attr_camera.attr,
1507 &dev_attr_cardr.attr,
1508 &dev_attr_touchpad.attr,
1509 &dev_attr_lid_resume.attr,
1510 NULL
1511 };
1512
1513 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1514 struct attribute *attr, int idx)
1515 {
1516 struct device *dev = container_of(kobj, struct device, kobj);
1517 struct platform_device *pdev = to_platform_device(dev);
1518 struct asus_wmi *asus = platform_get_drvdata(pdev);
1519 bool ok = true;
1520 int devid = -1;
1521
1522 if (attr == &dev_attr_camera.attr)
1523 devid = ASUS_WMI_DEVID_CAMERA;
1524 else if (attr == &dev_attr_cardr.attr)
1525 devid = ASUS_WMI_DEVID_CARDREADER;
1526 else if (attr == &dev_attr_touchpad.attr)
1527 devid = ASUS_WMI_DEVID_TOUCHPAD;
1528 else if (attr == &dev_attr_lid_resume.attr)
1529 devid = ASUS_WMI_DEVID_LID_RESUME;
1530
1531 if (devid != -1)
1532 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1533
1534 return ok ? attr->mode : 0;
1535 }
1536
1537 static struct attribute_group platform_attribute_group = {
1538 .is_visible = asus_sysfs_is_visible,
1539 .attrs = platform_attributes
1540 };
1541
1542 static void asus_wmi_sysfs_exit(struct platform_device *device)
1543 {
1544 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1545 }
1546
1547 static int asus_wmi_sysfs_init(struct platform_device *device)
1548 {
1549 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1550 }
1551
1552 /*
1553 * Platform device
1554 */
1555 static int asus_wmi_platform_init(struct asus_wmi *asus)
1556 {
1557 int rv;
1558
1559 /* INIT enable hotkeys on some models */
1560 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1561 pr_info("Initialization: %#x\n", rv);
1562
1563 /* We don't know yet what to do with this version... */
1564 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1565 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1566 asus->spec = rv;
1567 }
1568
1569 /*
1570 * The SFUN method probably allows the original driver to get the list
1571 * of features supported by a given model. For now, 0x0100 or 0x0800
1572 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1573 * The significance of others is yet to be found.
1574 */
1575 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1576 pr_info("SFUN value: %#x\n", rv);
1577 asus->sfun = rv;
1578 }
1579
1580 /*
1581 * Eee PC and Notebooks seems to have different method_id for DSTS,
1582 * but it may also be related to the BIOS's SPEC.
1583 * Note, on most Eeepc, there is no way to check if a method exist
1584 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1585 * but once again, SPEC may probably be used for that kind of things.
1586 */
1587 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1588 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1589 else
1590 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1591
1592 /* CWAP allow to define the behavior of the Fn+F2 key,
1593 * this method doesn't seems to be present on Eee PCs */
1594 if (asus->driver->quirks->wapf >= 0)
1595 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1596 asus->driver->quirks->wapf, NULL);
1597
1598 return asus_wmi_sysfs_init(asus->platform_device);
1599 }
1600
1601 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1602 {
1603 asus_wmi_sysfs_exit(asus->platform_device);
1604 }
1605
1606 /*
1607 * debugfs
1608 */
1609 struct asus_wmi_debugfs_node {
1610 struct asus_wmi *asus;
1611 char *name;
1612 int (*show) (struct seq_file *m, void *data);
1613 };
1614
1615 static int show_dsts(struct seq_file *m, void *data)
1616 {
1617 struct asus_wmi *asus = m->private;
1618 int err;
1619 u32 retval = -1;
1620
1621 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1622
1623 if (err < 0)
1624 return err;
1625
1626 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1627
1628 return 0;
1629 }
1630
1631 static int show_devs(struct seq_file *m, void *data)
1632 {
1633 struct asus_wmi *asus = m->private;
1634 int err;
1635 u32 retval = -1;
1636
1637 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1638 &retval);
1639
1640 if (err < 0)
1641 return err;
1642
1643 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1644 asus->debug.ctrl_param, retval);
1645
1646 return 0;
1647 }
1648
1649 static int show_call(struct seq_file *m, void *data)
1650 {
1651 struct asus_wmi *asus = m->private;
1652 struct bios_args args = {
1653 .arg0 = asus->debug.dev_id,
1654 .arg1 = asus->debug.ctrl_param,
1655 };
1656 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1657 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1658 union acpi_object *obj;
1659 acpi_status status;
1660
1661 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1662 1, asus->debug.method_id,
1663 &input, &output);
1664
1665 if (ACPI_FAILURE(status))
1666 return -EIO;
1667
1668 obj = (union acpi_object *)output.pointer;
1669 if (obj && obj->type == ACPI_TYPE_INTEGER)
1670 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1671 asus->debug.dev_id, asus->debug.ctrl_param,
1672 (u32) obj->integer.value);
1673 else
1674 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1675 asus->debug.dev_id, asus->debug.ctrl_param,
1676 obj ? obj->type : -1);
1677
1678 kfree(obj);
1679
1680 return 0;
1681 }
1682
1683 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1684 {NULL, "devs", show_devs},
1685 {NULL, "dsts", show_dsts},
1686 {NULL, "call", show_call},
1687 };
1688
1689 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1690 {
1691 struct asus_wmi_debugfs_node *node = inode->i_private;
1692
1693 return single_open(file, node->show, node->asus);
1694 }
1695
1696 static const struct file_operations asus_wmi_debugfs_io_ops = {
1697 .owner = THIS_MODULE,
1698 .open = asus_wmi_debugfs_open,
1699 .read = seq_read,
1700 .llseek = seq_lseek,
1701 .release = single_release,
1702 };
1703
1704 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1705 {
1706 debugfs_remove_recursive(asus->debug.root);
1707 }
1708
1709 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1710 {
1711 struct dentry *dent;
1712 int i;
1713
1714 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1715 if (!asus->debug.root) {
1716 pr_err("failed to create debugfs directory\n");
1717 goto error_debugfs;
1718 }
1719
1720 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1721 asus->debug.root, &asus->debug.method_id);
1722 if (!dent)
1723 goto error_debugfs;
1724
1725 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1726 asus->debug.root, &asus->debug.dev_id);
1727 if (!dent)
1728 goto error_debugfs;
1729
1730 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1731 asus->debug.root, &asus->debug.ctrl_param);
1732 if (!dent)
1733 goto error_debugfs;
1734
1735 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1736 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1737
1738 node->asus = asus;
1739 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1740 asus->debug.root, node,
1741 &asus_wmi_debugfs_io_ops);
1742 if (!dent) {
1743 pr_err("failed to create debug file: %s\n", node->name);
1744 goto error_debugfs;
1745 }
1746 }
1747
1748 return 0;
1749
1750 error_debugfs:
1751 asus_wmi_debugfs_exit(asus);
1752 return -ENOMEM;
1753 }
1754
1755 /*
1756 * WMI Driver
1757 */
1758 static int asus_wmi_add(struct platform_device *pdev)
1759 {
1760 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1761 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1762 struct asus_wmi *asus;
1763 acpi_status status;
1764 int err;
1765 u32 result;
1766
1767 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1768 if (!asus)
1769 return -ENOMEM;
1770
1771 asus->driver = wdrv;
1772 asus->platform_device = pdev;
1773 wdrv->platform_device = pdev;
1774 platform_set_drvdata(asus->platform_device, asus);
1775
1776 if (wdrv->detect_quirks)
1777 wdrv->detect_quirks(asus->driver);
1778
1779 err = asus_wmi_platform_init(asus);
1780 if (err)
1781 goto fail_platform;
1782
1783 err = asus_wmi_input_init(asus);
1784 if (err)
1785 goto fail_input;
1786
1787 err = asus_wmi_hwmon_init(asus);
1788 if (err)
1789 goto fail_hwmon;
1790
1791 err = asus_wmi_led_init(asus);
1792 if (err)
1793 goto fail_leds;
1794
1795 err = asus_wmi_rfkill_init(asus);
1796 if (err)
1797 goto fail_rfkill;
1798
1799 if (asus->driver->quirks->wmi_backlight_power)
1800 acpi_video_dmi_promote_vendor();
1801 if (!acpi_video_backlight_support()) {
1802 pr_info("Disabling ACPI video driver\n");
1803 acpi_video_unregister();
1804 err = asus_wmi_backlight_init(asus);
1805 if (err && err != -ENODEV)
1806 goto fail_backlight;
1807 } else
1808 pr_info("Backlight controlled by ACPI video driver\n");
1809
1810 status = wmi_install_notify_handler(asus->driver->event_guid,
1811 asus_wmi_notify, asus);
1812 if (ACPI_FAILURE(status)) {
1813 pr_err("Unable to register notify handler - %d\n", status);
1814 err = -ENODEV;
1815 goto fail_wmi_handler;
1816 }
1817
1818 err = asus_wmi_debugfs_init(asus);
1819 if (err)
1820 goto fail_debugfs;
1821
1822 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
1823 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
1824 asus->driver->wlan_ctrl_by_user = 1;
1825
1826 return 0;
1827
1828 fail_debugfs:
1829 wmi_remove_notify_handler(asus->driver->event_guid);
1830 fail_wmi_handler:
1831 asus_wmi_backlight_exit(asus);
1832 fail_backlight:
1833 asus_wmi_rfkill_exit(asus);
1834 fail_rfkill:
1835 asus_wmi_led_exit(asus);
1836 fail_leds:
1837 asus_wmi_hwmon_exit(asus);
1838 fail_hwmon:
1839 asus_wmi_input_exit(asus);
1840 fail_input:
1841 asus_wmi_platform_exit(asus);
1842 fail_platform:
1843 kfree(asus);
1844 return err;
1845 }
1846
1847 static int asus_wmi_remove(struct platform_device *device)
1848 {
1849 struct asus_wmi *asus;
1850
1851 asus = platform_get_drvdata(device);
1852 wmi_remove_notify_handler(asus->driver->event_guid);
1853 asus_wmi_backlight_exit(asus);
1854 asus_wmi_input_exit(asus);
1855 asus_wmi_hwmon_exit(asus);
1856 asus_wmi_led_exit(asus);
1857 asus_wmi_rfkill_exit(asus);
1858 asus_wmi_debugfs_exit(asus);
1859 asus_wmi_platform_exit(asus);
1860
1861 kfree(asus);
1862 return 0;
1863 }
1864
1865 /*
1866 * Platform driver - hibernate/resume callbacks
1867 */
1868 static int asus_hotk_thaw(struct device *device)
1869 {
1870 struct asus_wmi *asus = dev_get_drvdata(device);
1871
1872 if (asus->wlan.rfkill) {
1873 bool wlan;
1874
1875 /*
1876 * Work around bios bug - acpi _PTS turns off the wireless led
1877 * during suspend. Normally it restores it on resume, but
1878 * we should kick it ourselves in case hibernation is aborted.
1879 */
1880 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1881 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1882 }
1883
1884 return 0;
1885 }
1886
1887 static int asus_hotk_restore(struct device *device)
1888 {
1889 struct asus_wmi *asus = dev_get_drvdata(device);
1890 int bl;
1891
1892 /* Refresh both wlan rfkill state and pci hotplug */
1893 if (asus->wlan.rfkill)
1894 asus_rfkill_hotplug(asus);
1895
1896 if (asus->bluetooth.rfkill) {
1897 bl = !asus_wmi_get_devstate_simple(asus,
1898 ASUS_WMI_DEVID_BLUETOOTH);
1899 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1900 }
1901 if (asus->wimax.rfkill) {
1902 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1903 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1904 }
1905 if (asus->wwan3g.rfkill) {
1906 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1907 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1908 }
1909 if (asus->gps.rfkill) {
1910 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1911 rfkill_set_sw_state(asus->gps.rfkill, bl);
1912 }
1913 if (asus->uwb.rfkill) {
1914 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1915 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1916 }
1917
1918 return 0;
1919 }
1920
1921 static const struct dev_pm_ops asus_pm_ops = {
1922 .thaw = asus_hotk_thaw,
1923 .restore = asus_hotk_restore,
1924 };
1925
1926 static int asus_wmi_probe(struct platform_device *pdev)
1927 {
1928 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1929 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1930 int ret;
1931
1932 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1933 pr_warn("Management GUID not found\n");
1934 return -ENODEV;
1935 }
1936
1937 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1938 pr_warn("Event GUID not found\n");
1939 return -ENODEV;
1940 }
1941
1942 if (wdrv->probe) {
1943 ret = wdrv->probe(pdev);
1944 if (ret)
1945 return ret;
1946 }
1947
1948 return asus_wmi_add(pdev);
1949 }
1950
1951 static bool used;
1952
1953 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1954 {
1955 struct platform_driver *platform_driver;
1956 struct platform_device *platform_device;
1957
1958 if (used)
1959 return -EBUSY;
1960
1961 platform_driver = &driver->platform_driver;
1962 platform_driver->remove = asus_wmi_remove;
1963 platform_driver->driver.owner = driver->owner;
1964 platform_driver->driver.name = driver->name;
1965 platform_driver->driver.pm = &asus_pm_ops;
1966
1967 platform_device = platform_create_bundle(platform_driver,
1968 asus_wmi_probe,
1969 NULL, 0, NULL, 0);
1970 if (IS_ERR(platform_device))
1971 return PTR_ERR(platform_device);
1972
1973 used = true;
1974 return 0;
1975 }
1976 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1977
1978 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1979 {
1980 platform_device_unregister(driver->platform_device);
1981 platform_driver_unregister(&driver->platform_driver);
1982 used = false;
1983 }
1984 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1985
1986 static int __init asus_wmi_init(void)
1987 {
1988 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1989 pr_info("Asus Management GUID not found\n");
1990 return -ENODEV;
1991 }
1992
1993 pr_info("ASUS WMI generic driver loaded\n");
1994 return 0;
1995 }
1996
1997 static void __exit asus_wmi_exit(void)
1998 {
1999 pr_info("ASUS WMI generic driver unloaded\n");
2000 }
2001
2002 module_init(asus_wmi_init);
2003 module_exit(asus_wmi_exit);
ubuntu-bionic-kernel mirror