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