Loading...
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Asus PC WMI hotkey driver
4 *
5 * Copyright(C) 2010 Intel Corporation.
6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
7 *
8 * Portions based on wistron_btns.c:
9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12 */
13
14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15
16#include <linux/acpi.h>
17#include <linux/backlight.h>
18#include <linux/debugfs.h>
19#include <linux/dmi.h>
20#include <linux/fb.h>
21#include <linux/hwmon.h>
22#include <linux/hwmon-sysfs.h>
23#include <linux/init.h>
24#include <linux/input.h>
25#include <linux/input/sparse-keymap.h>
26#include <linux/kernel.h>
27#include <linux/leds.h>
28#include <linux/module.h>
29#include <linux/pci.h>
30#include <linux/pci_hotplug.h>
31#include <linux/platform_data/x86/asus-wmi.h>
32#include <linux/platform_device.h>
33#include <linux/platform_profile.h>
34#include <linux/power_supply.h>
35#include <linux/rfkill.h>
36#include <linux/seq_file.h>
37#include <linux/slab.h>
38#include <linux/types.h>
39#include <linux/units.h>
40
41#include <acpi/battery.h>
42#include <acpi/video.h>
43
44#include "asus-wmi.h"
45
46MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
47MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>");
48MODULE_DESCRIPTION("Asus Generic WMI Driver");
49MODULE_LICENSE("GPL");
50
51static bool fnlock_default = true;
52module_param(fnlock_default, bool, 0444);
53
54#define to_asus_wmi_driver(pdrv) \
55 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
56
57#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
58
59#define NOTIFY_BRNUP_MIN 0x11
60#define NOTIFY_BRNUP_MAX 0x1f
61#define NOTIFY_BRNDOWN_MIN 0x20
62#define NOTIFY_BRNDOWN_MAX 0x2e
63#define NOTIFY_FNLOCK_TOGGLE 0x4e
64#define NOTIFY_KBD_DOCK_CHANGE 0x75
65#define NOTIFY_KBD_BRTUP 0xc4
66#define NOTIFY_KBD_BRTDWN 0xc5
67#define NOTIFY_KBD_BRTTOGGLE 0xc7
68#define NOTIFY_KBD_FBM 0x99
69#define NOTIFY_KBD_TTP 0xae
70#define NOTIFY_LID_FLIP 0xfa
71#define NOTIFY_LID_FLIP_ROG 0xbd
72
73#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
74
75#define ASUS_GPU_FAN_DESC "gpu_fan"
76#define ASUS_FAN_DESC "cpu_fan"
77#define ASUS_FAN_MFUN 0x13
78#define ASUS_FAN_SFUN_READ 0x06
79#define ASUS_FAN_SFUN_WRITE 0x07
80
81/* Based on standard hwmon pwmX_enable values */
82#define ASUS_FAN_CTRL_FULLSPEED 0
83#define ASUS_FAN_CTRL_MANUAL 1
84#define ASUS_FAN_CTRL_AUTO 2
85
86#define ASUS_FAN_BOOST_MODE_NORMAL 0
87#define ASUS_FAN_BOOST_MODE_OVERBOOST 1
88#define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
89#define ASUS_FAN_BOOST_MODE_SILENT 2
90#define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
91#define ASUS_FAN_BOOST_MODES_MASK 0x03
92
93#define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0
94#define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
95#define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
96
97#define USB_INTEL_XUSB2PR 0xD0
98#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
99
100#define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
101#define ASUS_ACPI_UID_ATK "ATK"
102
103#define WMI_EVENT_QUEUE_SIZE 0x10
104#define WMI_EVENT_QUEUE_END 0x1
105#define WMI_EVENT_MASK 0xFFFF
106/* The WMI hotkey event value is always the same. */
107#define WMI_EVENT_VALUE_ATK 0xFF
108
109#define WMI_EVENT_MASK 0xFFFF
110
111#define FAN_CURVE_POINTS 8
112#define FAN_CURVE_BUF_LEN 32
113#define FAN_CURVE_DEV_CPU 0x00
114#define FAN_CURVE_DEV_GPU 0x01
115/* Mask to determine if setting temperature or percentage */
116#define FAN_CURVE_PWM_MASK 0x04
117
118static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
119
120static int throttle_thermal_policy_write(struct asus_wmi *);
121
122static bool ashs_present(void)
123{
124 int i = 0;
125 while (ashs_ids[i]) {
126 if (acpi_dev_found(ashs_ids[i++]))
127 return true;
128 }
129 return false;
130}
131
132struct bios_args {
133 u32 arg0;
134 u32 arg1;
135 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
136 u32 arg3;
137 u32 arg4; /* Some ROG laptops require a full 5 input args */
138 u32 arg5;
139} __packed;
140
141/*
142 * Struct that's used for all methods called via AGFN. Naming is
143 * identically to the AML code.
144 */
145struct agfn_args {
146 u16 mfun; /* probably "Multi-function" to be called */
147 u16 sfun; /* probably "Sub-function" to be called */
148 u16 len; /* size of the hole struct, including subfunction fields */
149 u8 stas; /* not used by now */
150 u8 err; /* zero on success */
151} __packed;
152
153/* struct used for calling fan read and write methods */
154struct agfn_fan_args {
155 struct agfn_args agfn; /* common fields */
156 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
157 u32 speed; /* read: RPM/100 - write: 0-255 */
158} __packed;
159
160/*
161 * <platform>/ - debugfs root directory
162 * dev_id - current dev_id
163 * ctrl_param - current ctrl_param
164 * method_id - current method_id
165 * devs - call DEVS(dev_id, ctrl_param) and print result
166 * dsts - call DSTS(dev_id) and print result
167 * call - call method_id(dev_id, ctrl_param) and print result
168 */
169struct asus_wmi_debug {
170 struct dentry *root;
171 u32 method_id;
172 u32 dev_id;
173 u32 ctrl_param;
174};
175
176struct asus_rfkill {
177 struct asus_wmi *asus;
178 struct rfkill *rfkill;
179 u32 dev_id;
180};
181
182enum fan_type {
183 FAN_TYPE_NONE = 0,
184 FAN_TYPE_AGFN, /* deprecated on newer platforms */
185 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
186};
187
188struct fan_curve_data {
189 bool enabled;
190 u32 device_id;
191 u8 temps[FAN_CURVE_POINTS];
192 u8 percents[FAN_CURVE_POINTS];
193};
194
195struct asus_wmi {
196 int dsts_id;
197 int spec;
198 int sfun;
199 bool wmi_event_queue;
200
201 struct input_dev *inputdev;
202 struct backlight_device *backlight_device;
203 struct platform_device *platform_device;
204
205 struct led_classdev wlan_led;
206 int wlan_led_wk;
207 struct led_classdev tpd_led;
208 int tpd_led_wk;
209 struct led_classdev kbd_led;
210 int kbd_led_wk;
211 struct led_classdev lightbar_led;
212 int lightbar_led_wk;
213 struct led_classdev micmute_led;
214 struct workqueue_struct *led_workqueue;
215 struct work_struct tpd_led_work;
216 struct work_struct wlan_led_work;
217 struct work_struct lightbar_led_work;
218
219 struct asus_rfkill wlan;
220 struct asus_rfkill bluetooth;
221 struct asus_rfkill wimax;
222 struct asus_rfkill wwan3g;
223 struct asus_rfkill gps;
224 struct asus_rfkill uwb;
225
226 int tablet_switch_event_code;
227 u32 tablet_switch_dev_id;
228 bool tablet_switch_inverted;
229
230 enum fan_type fan_type;
231 enum fan_type gpu_fan_type;
232 int fan_pwm_mode;
233 int gpu_fan_pwm_mode;
234 int agfn_pwm;
235
236 bool fan_boost_mode_available;
237 u8 fan_boost_mode_mask;
238 u8 fan_boost_mode;
239
240 bool egpu_enable_available;
241 bool dgpu_disable_available;
242 bool gpu_mux_mode_available;
243
244 bool kbd_rgb_mode_available;
245 bool kbd_rgb_state_available;
246
247 bool throttle_thermal_policy_available;
248 u8 throttle_thermal_policy_mode;
249
250 bool cpu_fan_curve_available;
251 bool gpu_fan_curve_available;
252 struct fan_curve_data custom_fan_curves[2];
253
254 struct platform_profile_handler platform_profile_handler;
255 bool platform_profile_support;
256
257 // The RSOC controls the maximum charging percentage.
258 bool battery_rsoc_available;
259
260 bool panel_overdrive_available;
261
262 struct hotplug_slot hotplug_slot;
263 struct mutex hotplug_lock;
264 struct mutex wmi_lock;
265 struct workqueue_struct *hotplug_workqueue;
266 struct work_struct hotplug_work;
267
268 bool fnlock_locked;
269
270 struct asus_wmi_debug debug;
271
272 struct asus_wmi_driver *driver;
273};
274
275/* WMI ************************************************************************/
276
277static int asus_wmi_evaluate_method3(u32 method_id,
278 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
279{
280 struct bios_args args = {
281 .arg0 = arg0,
282 .arg1 = arg1,
283 .arg2 = arg2,
284 };
285 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
286 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
287 acpi_status status;
288 union acpi_object *obj;
289 u32 tmp = 0;
290
291 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
292 &input, &output);
293
294 if (ACPI_FAILURE(status))
295 return -EIO;
296
297 obj = (union acpi_object *)output.pointer;
298 if (obj && obj->type == ACPI_TYPE_INTEGER)
299 tmp = (u32) obj->integer.value;
300
301 if (retval)
302 *retval = tmp;
303
304 kfree(obj);
305
306 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
307 return -ENODEV;
308
309 return 0;
310}
311
312int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
313{
314 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
315}
316EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
317
318static int asus_wmi_evaluate_method5(u32 method_id,
319 u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4, u32 *retval)
320{
321 struct bios_args args = {
322 .arg0 = arg0,
323 .arg1 = arg1,
324 .arg2 = arg2,
325 .arg3 = arg3,
326 .arg4 = arg4,
327 };
328 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
329 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
330 acpi_status status;
331 union acpi_object *obj;
332 u32 tmp = 0;
333
334 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
335 &input, &output);
336
337 if (ACPI_FAILURE(status))
338 return -EIO;
339
340 obj = (union acpi_object *)output.pointer;
341 if (obj && obj->type == ACPI_TYPE_INTEGER)
342 tmp = (u32) obj->integer.value;
343
344 if (retval)
345 *retval = tmp;
346
347 kfree(obj);
348
349 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
350 return -ENODEV;
351
352 return 0;
353}
354
355/*
356 * Returns as an error if the method output is not a buffer. Typically this
357 * means that the method called is unsupported.
358 */
359static int asus_wmi_evaluate_method_buf(u32 method_id,
360 u32 arg0, u32 arg1, u8 *ret_buffer, size_t size)
361{
362 struct bios_args args = {
363 .arg0 = arg0,
364 .arg1 = arg1,
365 .arg2 = 0,
366 };
367 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
368 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
369 acpi_status status;
370 union acpi_object *obj;
371 int err = 0;
372
373 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
374 &input, &output);
375
376 if (ACPI_FAILURE(status))
377 return -EIO;
378
379 obj = (union acpi_object *)output.pointer;
380
381 switch (obj->type) {
382 case ACPI_TYPE_BUFFER:
383 if (obj->buffer.length > size) {
384 err = -ENOSPC;
385 break;
386 }
387 if (obj->buffer.length == 0) {
388 err = -ENODATA;
389 break;
390 }
391
392 memcpy(ret_buffer, obj->buffer.pointer, obj->buffer.length);
393 break;
394 case ACPI_TYPE_INTEGER:
395 err = (u32)obj->integer.value;
396
397 if (err == ASUS_WMI_UNSUPPORTED_METHOD)
398 err = -ENODEV;
399 /*
400 * At least one method returns a 0 with no buffer if no arg
401 * is provided, such as ASUS_WMI_DEVID_CPU_FAN_CURVE
402 */
403 if (err == 0)
404 err = -ENODATA;
405 break;
406 default:
407 err = -ENODATA;
408 break;
409 }
410
411 kfree(obj);
412
413 if (err)
414 return err;
415
416 return 0;
417}
418
419static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
420{
421 struct acpi_buffer input;
422 u64 phys_addr;
423 u32 retval;
424 u32 status;
425
426 /*
427 * Copy to dma capable address otherwise memory corruption occurs as
428 * bios has to be able to access it.
429 */
430 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
431 input.length = args.length;
432 if (!input.pointer)
433 return -ENOMEM;
434 phys_addr = virt_to_phys(input.pointer);
435
436 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
437 phys_addr, 0, &retval);
438 if (!status)
439 memcpy(args.pointer, input.pointer, args.length);
440
441 kfree(input.pointer);
442 if (status)
443 return -ENXIO;
444
445 return retval;
446}
447
448static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
449{
450 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
451}
452
453static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
454 u32 *retval)
455{
456 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
457 ctrl_param, retval);
458}
459
460/* Helper for special devices with magic return codes */
461static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
462 u32 dev_id, u32 mask)
463{
464 u32 retval = 0;
465 int err;
466
467 err = asus_wmi_get_devstate(asus, dev_id, &retval);
468 if (err < 0)
469 return err;
470
471 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
472 return -ENODEV;
473
474 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
475 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
476 return -ENODEV;
477 }
478
479 return retval & mask;
480}
481
482static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
483{
484 return asus_wmi_get_devstate_bits(asus, dev_id,
485 ASUS_WMI_DSTS_STATUS_BIT);
486}
487
488static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
489{
490 u32 retval;
491 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
492
493 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
494}
495
496/* Input **********************************************************************/
497static void asus_wmi_tablet_sw_report(struct asus_wmi *asus, bool value)
498{
499 input_report_switch(asus->inputdev, SW_TABLET_MODE,
500 asus->tablet_switch_inverted ? !value : value);
501 input_sync(asus->inputdev);
502}
503
504static void asus_wmi_tablet_sw_init(struct asus_wmi *asus, u32 dev_id, int event_code)
505{
506 struct device *dev = &asus->platform_device->dev;
507 int result;
508
509 result = asus_wmi_get_devstate_simple(asus, dev_id);
510 if (result >= 0) {
511 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
512 asus_wmi_tablet_sw_report(asus, result);
513 asus->tablet_switch_dev_id = dev_id;
514 asus->tablet_switch_event_code = event_code;
515 } else if (result == -ENODEV) {
516 dev_err(dev, "This device has tablet-mode-switch quirk but got ENODEV checking it. This is a bug.");
517 } else {
518 dev_err(dev, "Error checking for tablet-mode-switch: %d\n", result);
519 }
520}
521
522static int asus_wmi_input_init(struct asus_wmi *asus)
523{
524 struct device *dev = &asus->platform_device->dev;
525 int err;
526
527 asus->inputdev = input_allocate_device();
528 if (!asus->inputdev)
529 return -ENOMEM;
530
531 asus->inputdev->name = asus->driver->input_name;
532 asus->inputdev->phys = asus->driver->input_phys;
533 asus->inputdev->id.bustype = BUS_HOST;
534 asus->inputdev->dev.parent = dev;
535 set_bit(EV_REP, asus->inputdev->evbit);
536
537 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
538 if (err)
539 goto err_free_dev;
540
541 switch (asus->driver->quirks->tablet_switch_mode) {
542 case asus_wmi_no_tablet_switch:
543 break;
544 case asus_wmi_kbd_dock_devid:
545 asus->tablet_switch_inverted = true;
546 asus_wmi_tablet_sw_init(asus, ASUS_WMI_DEVID_KBD_DOCK, NOTIFY_KBD_DOCK_CHANGE);
547 break;
548 case asus_wmi_lid_flip_devid:
549 asus_wmi_tablet_sw_init(asus, ASUS_WMI_DEVID_LID_FLIP, NOTIFY_LID_FLIP);
550 break;
551 case asus_wmi_lid_flip_rog_devid:
552 asus_wmi_tablet_sw_init(asus, ASUS_WMI_DEVID_LID_FLIP_ROG, NOTIFY_LID_FLIP_ROG);
553 break;
554 }
555
556 err = input_register_device(asus->inputdev);
557 if (err)
558 goto err_free_dev;
559
560 return 0;
561
562err_free_dev:
563 input_free_device(asus->inputdev);
564 return err;
565}
566
567static void asus_wmi_input_exit(struct asus_wmi *asus)
568{
569 if (asus->inputdev)
570 input_unregister_device(asus->inputdev);
571
572 asus->inputdev = NULL;
573}
574
575/* Tablet mode ****************************************************************/
576
577static void asus_wmi_tablet_mode_get_state(struct asus_wmi *asus)
578{
579 int result;
580
581 if (!asus->tablet_switch_dev_id)
582 return;
583
584 result = asus_wmi_get_devstate_simple(asus, asus->tablet_switch_dev_id);
585 if (result >= 0)
586 asus_wmi_tablet_sw_report(asus, result);
587}
588
589/* dGPU ********************************************************************/
590static ssize_t dgpu_disable_show(struct device *dev,
591 struct device_attribute *attr, char *buf)
592{
593 struct asus_wmi *asus = dev_get_drvdata(dev);
594 int result;
595
596 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_DGPU);
597 if (result < 0)
598 return result;
599
600 return sysfs_emit(buf, "%d\n", result);
601}
602
603/*
604 * A user may be required to store the value twice, typcial store first, then
605 * rescan PCI bus to activate power, then store a second time to save correctly.
606 * The reason for this is that an extra code path in the ACPI is enabled when
607 * the device and bus are powered.
608 */
609static ssize_t dgpu_disable_store(struct device *dev,
610 struct device_attribute *attr,
611 const char *buf, size_t count)
612{
613 int result, err;
614 u32 disable;
615
616 struct asus_wmi *asus = dev_get_drvdata(dev);
617
618 result = kstrtou32(buf, 10, &disable);
619 if (result)
620 return result;
621
622 if (disable > 1)
623 return -EINVAL;
624
625 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_DGPU, disable, &result);
626 if (err) {
627 pr_warn("Failed to set dgpu disable: %d\n", err);
628 return err;
629 }
630
631 if (result > 1) {
632 pr_warn("Failed to set dgpu disable (result): 0x%x\n", result);
633 return -EIO;
634 }
635
636 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "dgpu_disable");
637
638 return count;
639}
640static DEVICE_ATTR_RW(dgpu_disable);
641
642/* eGPU ********************************************************************/
643static ssize_t egpu_enable_show(struct device *dev,
644 struct device_attribute *attr, char *buf)
645{
646 struct asus_wmi *asus = dev_get_drvdata(dev);
647 int result;
648
649 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_EGPU);
650 if (result < 0)
651 return result;
652
653 return sysfs_emit(buf, "%d\n", result);
654}
655
656/* The ACPI call to enable the eGPU also disables the internal dGPU */
657static ssize_t egpu_enable_store(struct device *dev,
658 struct device_attribute *attr,
659 const char *buf, size_t count)
660{
661 int result, err;
662 u32 enable;
663
664 struct asus_wmi *asus = dev_get_drvdata(dev);
665
666 err = kstrtou32(buf, 10, &enable);
667 if (err)
668 return err;
669
670 if (enable > 1)
671 return -EINVAL;
672
673 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_EGPU, enable, &result);
674 if (err) {
675 pr_warn("Failed to set egpu disable: %d\n", err);
676 return err;
677 }
678
679 if (result > 1) {
680 pr_warn("Failed to set egpu disable (retval): 0x%x\n", result);
681 return -EIO;
682 }
683
684 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "egpu_enable");
685
686 return count;
687}
688static DEVICE_ATTR_RW(egpu_enable);
689
690/* gpu mux switch *************************************************************/
691static ssize_t gpu_mux_mode_show(struct device *dev,
692 struct device_attribute *attr, char *buf)
693{
694 struct asus_wmi *asus = dev_get_drvdata(dev);
695 int result;
696
697 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPU_MUX);
698 if (result < 0)
699 return result;
700
701 return sysfs_emit(buf, "%d\n", result);
702}
703
704static ssize_t gpu_mux_mode_store(struct device *dev,
705 struct device_attribute *attr,
706 const char *buf, size_t count)
707{
708 struct asus_wmi *asus = dev_get_drvdata(dev);
709 int result, err;
710 u32 optimus;
711
712 err = kstrtou32(buf, 10, &optimus);
713 if (err)
714 return err;
715
716 if (optimus > 1)
717 return -EINVAL;
718
719 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_GPU_MUX, optimus, &result);
720 if (err) {
721 dev_err(dev, "Failed to set GPU MUX mode: %d\n", err);
722 return err;
723 }
724 /* !1 is considered a fail by ASUS */
725 if (result != 1) {
726 dev_warn(dev, "Failed to set GPU MUX mode (result): 0x%x\n", result);
727 return -EIO;
728 }
729
730 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "gpu_mux_mode");
731
732 return count;
733}
734static DEVICE_ATTR_RW(gpu_mux_mode);
735
736/* TUF Laptop Keyboard RGB Modes **********************************************/
737static ssize_t kbd_rgb_mode_store(struct device *dev,
738 struct device_attribute *attr,
739 const char *buf, size_t count)
740{
741 u32 cmd, mode, r, g, b, speed;
742 int err;
743
744 if (sscanf(buf, "%d %d %d %d %d %d", &cmd, &mode, &r, &g, &b, &speed) != 6)
745 return -EINVAL;
746
747 cmd = !!cmd;
748
749 /* These are the known usable modes across all TUF/ROG */
750 if (mode >= 12 || mode == 9)
751 mode = 10;
752
753 switch (speed) {
754 case 0:
755 speed = 0xe1;
756 break;
757 case 1:
758 speed = 0xeb;
759 break;
760 case 2:
761 speed = 0xf5;
762 break;
763 default:
764 speed = 0xeb;
765 }
766
767 err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS, ASUS_WMI_DEVID_TUF_RGB_MODE,
768 cmd | (mode << 8) | (r << 16) | (g << 24), b | (speed << 8), NULL);
769 if (err)
770 return err;
771
772 return count;
773}
774static DEVICE_ATTR_WO(kbd_rgb_mode);
775
776static ssize_t kbd_rgb_mode_index_show(struct device *device,
777 struct device_attribute *attr,
778 char *buf)
779{
780 return sysfs_emit(buf, "%s\n", "cmd mode red green blue speed");
781}
782static DEVICE_ATTR_RO(kbd_rgb_mode_index);
783
784static struct attribute *kbd_rgb_mode_attrs[] = {
785 &dev_attr_kbd_rgb_mode.attr,
786 &dev_attr_kbd_rgb_mode_index.attr,
787 NULL,
788};
789
790static const struct attribute_group kbd_rgb_mode_group = {
791 .attrs = kbd_rgb_mode_attrs,
792};
793
794/* TUF Laptop Keyboard RGB State **********************************************/
795static ssize_t kbd_rgb_state_store(struct device *dev,
796 struct device_attribute *attr,
797 const char *buf, size_t count)
798{
799 u32 flags, cmd, boot, awake, sleep, keyboard;
800 int err;
801
802 if (sscanf(buf, "%d %d %d %d %d", &cmd, &boot, &awake, &sleep, &keyboard) != 5)
803 return -EINVAL;
804
805 if (cmd)
806 cmd = BIT(2);
807
808 flags = 0;
809 if (boot)
810 flags |= BIT(1);
811 if (awake)
812 flags |= BIT(3);
813 if (sleep)
814 flags |= BIT(5);
815 if (keyboard)
816 flags |= BIT(7);
817
818 /* 0xbd is the required default arg0 for the method. Nothing happens otherwise */
819 err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,
820 ASUS_WMI_DEVID_TUF_RGB_STATE, 0xbd | cmd << 8 | (flags << 16), 0, NULL);
821 if (err)
822 return err;
823
824 return count;
825}
826static DEVICE_ATTR_WO(kbd_rgb_state);
827
828static ssize_t kbd_rgb_state_index_show(struct device *device,
829 struct device_attribute *attr,
830 char *buf)
831{
832 return sysfs_emit(buf, "%s\n", "cmd boot awake sleep keyboard");
833}
834static DEVICE_ATTR_RO(kbd_rgb_state_index);
835
836static struct attribute *kbd_rgb_state_attrs[] = {
837 &dev_attr_kbd_rgb_state.attr,
838 &dev_attr_kbd_rgb_state_index.attr,
839 NULL,
840};
841
842static const struct attribute_group kbd_rgb_state_group = {
843 .attrs = kbd_rgb_state_attrs,
844};
845
846static const struct attribute_group *kbd_rgb_mode_groups[] = {
847 NULL,
848 NULL,
849 NULL,
850};
851
852/* Battery ********************************************************************/
853
854/* The battery maximum charging percentage */
855static int charge_end_threshold;
856
857static ssize_t charge_control_end_threshold_store(struct device *dev,
858 struct device_attribute *attr,
859 const char *buf, size_t count)
860{
861 int value, ret, rv;
862
863 ret = kstrtouint(buf, 10, &value);
864 if (ret)
865 return ret;
866
867 if (value < 0 || value > 100)
868 return -EINVAL;
869
870 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
871 if (ret)
872 return ret;
873
874 if (rv != 1)
875 return -EIO;
876
877 /* There isn't any method in the DSDT to read the threshold, so we
878 * save the threshold.
879 */
880 charge_end_threshold = value;
881 return count;
882}
883
884static ssize_t charge_control_end_threshold_show(struct device *device,
885 struct device_attribute *attr,
886 char *buf)
887{
888 return sysfs_emit(buf, "%d\n", charge_end_threshold);
889}
890
891static DEVICE_ATTR_RW(charge_control_end_threshold);
892
893static int asus_wmi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
894{
895 /* The WMI method does not provide a way to specific a battery, so we
896 * just assume it is the first battery.
897 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
898 * battery is named BATT.
899 */
900 if (strcmp(battery->desc->name, "BAT0") != 0 &&
901 strcmp(battery->desc->name, "BAT1") != 0 &&
902 strcmp(battery->desc->name, "BATC") != 0 &&
903 strcmp(battery->desc->name, "BATT") != 0)
904 return -ENODEV;
905
906 if (device_create_file(&battery->dev,
907 &dev_attr_charge_control_end_threshold))
908 return -ENODEV;
909
910 /* The charge threshold is only reset when the system is power cycled,
911 * and we can't get the current threshold so let set it to 100% when
912 * a battery is added.
913 */
914 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
915 charge_end_threshold = 100;
916
917 return 0;
918}
919
920static int asus_wmi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
921{
922 device_remove_file(&battery->dev,
923 &dev_attr_charge_control_end_threshold);
924 return 0;
925}
926
927static struct acpi_battery_hook battery_hook = {
928 .add_battery = asus_wmi_battery_add,
929 .remove_battery = asus_wmi_battery_remove,
930 .name = "ASUS Battery Extension",
931};
932
933static void asus_wmi_battery_init(struct asus_wmi *asus)
934{
935 asus->battery_rsoc_available = false;
936 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
937 asus->battery_rsoc_available = true;
938 battery_hook_register(&battery_hook);
939 }
940}
941
942static void asus_wmi_battery_exit(struct asus_wmi *asus)
943{
944 if (asus->battery_rsoc_available)
945 battery_hook_unregister(&battery_hook);
946}
947
948/* LEDs ***********************************************************************/
949
950/*
951 * These functions actually update the LED's, and are called from a
952 * workqueue. By doing this as separate work rather than when the LED
953 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
954 * potentially bad time, such as a timer interrupt.
955 */
956static void tpd_led_update(struct work_struct *work)
957{
958 int ctrl_param;
959 struct asus_wmi *asus;
960
961 asus = container_of(work, struct asus_wmi, tpd_led_work);
962
963 ctrl_param = asus->tpd_led_wk;
964 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
965}
966
967static void tpd_led_set(struct led_classdev *led_cdev,
968 enum led_brightness value)
969{
970 struct asus_wmi *asus;
971
972 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
973
974 asus->tpd_led_wk = !!value;
975 queue_work(asus->led_workqueue, &asus->tpd_led_work);
976}
977
978static int read_tpd_led_state(struct asus_wmi *asus)
979{
980 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
981}
982
983static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
984{
985 struct asus_wmi *asus;
986
987 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
988
989 return read_tpd_led_state(asus);
990}
991
992static void kbd_led_update(struct asus_wmi *asus)
993{
994 int ctrl_param = 0;
995
996 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
997 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
998}
999
1000static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
1001{
1002 int retval;
1003
1004 /*
1005 * bits 0-2: level
1006 * bit 7: light on/off
1007 * bit 8-10: environment (0: dark, 1: normal, 2: light)
1008 * bit 17: status unknown
1009 */
1010 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
1011 0xFFFF);
1012
1013 /* Unknown status is considered as off */
1014 if (retval == 0x8000)
1015 retval = 0;
1016
1017 if (retval < 0)
1018 return retval;
1019
1020 if (level)
1021 *level = retval & 0x7F;
1022 if (env)
1023 *env = (retval >> 8) & 0x7F;
1024 return 0;
1025}
1026
1027static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
1028{
1029 struct asus_wmi *asus;
1030 int max_level;
1031
1032 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
1033 max_level = asus->kbd_led.max_brightness;
1034
1035 asus->kbd_led_wk = clamp_val(value, 0, max_level);
1036 kbd_led_update(asus);
1037}
1038
1039static void kbd_led_set(struct led_classdev *led_cdev,
1040 enum led_brightness value)
1041{
1042 /* Prevent disabling keyboard backlight on module unregister */
1043 if (led_cdev->flags & LED_UNREGISTERING)
1044 return;
1045
1046 do_kbd_led_set(led_cdev, value);
1047}
1048
1049static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
1050{
1051 struct led_classdev *led_cdev = &asus->kbd_led;
1052
1053 do_kbd_led_set(led_cdev, value);
1054 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
1055}
1056
1057static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
1058{
1059 struct asus_wmi *asus;
1060 int retval, value;
1061
1062 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
1063
1064 retval = kbd_led_read(asus, &value, NULL);
1065 if (retval < 0)
1066 return retval;
1067
1068 return value;
1069}
1070
1071static int wlan_led_unknown_state(struct asus_wmi *asus)
1072{
1073 u32 result;
1074
1075 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
1076
1077 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
1078}
1079
1080static void wlan_led_update(struct work_struct *work)
1081{
1082 int ctrl_param;
1083 struct asus_wmi *asus;
1084
1085 asus = container_of(work, struct asus_wmi, wlan_led_work);
1086
1087 ctrl_param = asus->wlan_led_wk;
1088 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
1089}
1090
1091static void wlan_led_set(struct led_classdev *led_cdev,
1092 enum led_brightness value)
1093{
1094 struct asus_wmi *asus;
1095
1096 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
1097
1098 asus->wlan_led_wk = !!value;
1099 queue_work(asus->led_workqueue, &asus->wlan_led_work);
1100}
1101
1102static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
1103{
1104 struct asus_wmi *asus;
1105 u32 result;
1106
1107 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
1108 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
1109
1110 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1111}
1112
1113static void lightbar_led_update(struct work_struct *work)
1114{
1115 struct asus_wmi *asus;
1116 int ctrl_param;
1117
1118 asus = container_of(work, struct asus_wmi, lightbar_led_work);
1119
1120 ctrl_param = asus->lightbar_led_wk;
1121 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
1122}
1123
1124static void lightbar_led_set(struct led_classdev *led_cdev,
1125 enum led_brightness value)
1126{
1127 struct asus_wmi *asus;
1128
1129 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
1130
1131 asus->lightbar_led_wk = !!value;
1132 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
1133}
1134
1135static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
1136{
1137 struct asus_wmi *asus;
1138 u32 result;
1139
1140 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
1141 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
1142
1143 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
1144}
1145
1146static int micmute_led_set(struct led_classdev *led_cdev,
1147 enum led_brightness brightness)
1148{
1149 int state = brightness != LED_OFF;
1150 int err;
1151
1152 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MICMUTE_LED, state, NULL);
1153 return err < 0 ? err : 0;
1154}
1155
1156static void asus_wmi_led_exit(struct asus_wmi *asus)
1157{
1158 led_classdev_unregister(&asus->kbd_led);
1159 led_classdev_unregister(&asus->tpd_led);
1160 led_classdev_unregister(&asus->wlan_led);
1161 led_classdev_unregister(&asus->lightbar_led);
1162 led_classdev_unregister(&asus->micmute_led);
1163
1164 if (asus->led_workqueue)
1165 destroy_workqueue(asus->led_workqueue);
1166}
1167
1168static int asus_wmi_led_init(struct asus_wmi *asus)
1169{
1170 int rv = 0, num_rgb_groups = 0, led_val;
1171
1172 if (asus->kbd_rgb_mode_available)
1173 kbd_rgb_mode_groups[num_rgb_groups++] = &kbd_rgb_mode_group;
1174 if (asus->kbd_rgb_state_available)
1175 kbd_rgb_mode_groups[num_rgb_groups++] = &kbd_rgb_state_group;
1176
1177 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
1178 if (!asus->led_workqueue)
1179 return -ENOMEM;
1180
1181 if (read_tpd_led_state(asus) >= 0) {
1182 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
1183
1184 asus->tpd_led.name = "asus::touchpad";
1185 asus->tpd_led.brightness_set = tpd_led_set;
1186 asus->tpd_led.brightness_get = tpd_led_get;
1187 asus->tpd_led.max_brightness = 1;
1188
1189 rv = led_classdev_register(&asus->platform_device->dev,
1190 &asus->tpd_led);
1191 if (rv)
1192 goto error;
1193 }
1194
1195 if (!kbd_led_read(asus, &led_val, NULL)) {
1196 asus->kbd_led_wk = led_val;
1197 asus->kbd_led.name = "asus::kbd_backlight";
1198 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
1199 asus->kbd_led.brightness_set = kbd_led_set;
1200 asus->kbd_led.brightness_get = kbd_led_get;
1201 asus->kbd_led.max_brightness = 3;
1202
1203 if (num_rgb_groups != 0)
1204 asus->kbd_led.groups = kbd_rgb_mode_groups;
1205
1206 rv = led_classdev_register(&asus->platform_device->dev,
1207 &asus->kbd_led);
1208 if (rv)
1209 goto error;
1210 }
1211
1212 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
1213 && (asus->driver->quirks->wapf > 0)) {
1214 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
1215
1216 asus->wlan_led.name = "asus::wlan";
1217 asus->wlan_led.brightness_set = wlan_led_set;
1218 if (!wlan_led_unknown_state(asus))
1219 asus->wlan_led.brightness_get = wlan_led_get;
1220 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
1221 asus->wlan_led.max_brightness = 1;
1222 asus->wlan_led.default_trigger = "asus-wlan";
1223
1224 rv = led_classdev_register(&asus->platform_device->dev,
1225 &asus->wlan_led);
1226 if (rv)
1227 goto error;
1228 }
1229
1230 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
1231 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
1232
1233 asus->lightbar_led.name = "asus::lightbar";
1234 asus->lightbar_led.brightness_set = lightbar_led_set;
1235 asus->lightbar_led.brightness_get = lightbar_led_get;
1236 asus->lightbar_led.max_brightness = 1;
1237
1238 rv = led_classdev_register(&asus->platform_device->dev,
1239 &asus->lightbar_led);
1240 }
1241
1242 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MICMUTE_LED)) {
1243 asus->micmute_led.name = "platform::micmute";
1244 asus->micmute_led.max_brightness = 1;
1245 asus->micmute_led.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
1246 asus->micmute_led.brightness_set_blocking = micmute_led_set;
1247 asus->micmute_led.default_trigger = "audio-micmute";
1248
1249 rv = led_classdev_register(&asus->platform_device->dev,
1250 &asus->micmute_led);
1251 if (rv)
1252 goto error;
1253 }
1254
1255error:
1256 if (rv)
1257 asus_wmi_led_exit(asus);
1258
1259 return rv;
1260}
1261
1262/* RF *************************************************************************/
1263
1264/*
1265 * PCI hotplug (for wlan rfkill)
1266 */
1267static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
1268{
1269 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1270
1271 if (result < 0)
1272 return false;
1273 return !result;
1274}
1275
1276static void asus_rfkill_hotplug(struct asus_wmi *asus)
1277{
1278 struct pci_dev *dev;
1279 struct pci_bus *bus;
1280 bool blocked;
1281 bool absent;
1282 u32 l;
1283
1284 mutex_lock(&asus->wmi_lock);
1285 blocked = asus_wlan_rfkill_blocked(asus);
1286 mutex_unlock(&asus->wmi_lock);
1287
1288 mutex_lock(&asus->hotplug_lock);
1289 pci_lock_rescan_remove();
1290
1291 if (asus->wlan.rfkill)
1292 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
1293
1294 if (asus->hotplug_slot.ops) {
1295 bus = pci_find_bus(0, 1);
1296 if (!bus) {
1297 pr_warn("Unable to find PCI bus 1?\n");
1298 goto out_unlock;
1299 }
1300
1301 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
1302 pr_err("Unable to read PCI config space?\n");
1303 goto out_unlock;
1304 }
1305 absent = (l == 0xffffffff);
1306
1307 if (blocked != absent) {
1308 pr_warn("BIOS says wireless lan is %s, but the pci device is %s\n",
1309 blocked ? "blocked" : "unblocked",
1310 absent ? "absent" : "present");
1311 pr_warn("skipped wireless hotplug as probably inappropriate for this model\n");
1312 goto out_unlock;
1313 }
1314
1315 if (!blocked) {
1316 dev = pci_get_slot(bus, 0);
1317 if (dev) {
1318 /* Device already present */
1319 pci_dev_put(dev);
1320 goto out_unlock;
1321 }
1322 dev = pci_scan_single_device(bus, 0);
1323 if (dev) {
1324 pci_bus_assign_resources(bus);
1325 pci_bus_add_device(dev);
1326 }
1327 } else {
1328 dev = pci_get_slot(bus, 0);
1329 if (dev) {
1330 pci_stop_and_remove_bus_device(dev);
1331 pci_dev_put(dev);
1332 }
1333 }
1334 }
1335
1336out_unlock:
1337 pci_unlock_rescan_remove();
1338 mutex_unlock(&asus->hotplug_lock);
1339}
1340
1341static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
1342{
1343 struct asus_wmi *asus = data;
1344
1345 if (event != ACPI_NOTIFY_BUS_CHECK)
1346 return;
1347
1348 /*
1349 * We can't call directly asus_rfkill_hotplug because most
1350 * of the time WMBC is still being executed and not reetrant.
1351 * There is currently no way to tell ACPICA that we want this
1352 * method to be serialized, we schedule a asus_rfkill_hotplug
1353 * call later, in a safer context.
1354 */
1355 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
1356}
1357
1358static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
1359{
1360 acpi_status status;
1361 acpi_handle handle;
1362
1363 status = acpi_get_handle(NULL, node, &handle);
1364 if (ACPI_FAILURE(status))
1365 return -ENODEV;
1366
1367 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
1368 asus_rfkill_notify, asus);
1369 if (ACPI_FAILURE(status))
1370 pr_warn("Failed to register notify on %s\n", node);
1371
1372 return 0;
1373}
1374
1375static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
1376{
1377 acpi_status status = AE_OK;
1378 acpi_handle handle;
1379
1380 status = acpi_get_handle(NULL, node, &handle);
1381 if (ACPI_FAILURE(status))
1382 return;
1383
1384 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
1385 asus_rfkill_notify);
1386 if (ACPI_FAILURE(status))
1387 pr_err("Error removing rfkill notify handler %s\n", node);
1388}
1389
1390static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
1391 u8 *value)
1392{
1393 struct asus_wmi *asus = container_of(hotplug_slot,
1394 struct asus_wmi, hotplug_slot);
1395 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1396
1397 if (result < 0)
1398 return result;
1399
1400 *value = !!result;
1401 return 0;
1402}
1403
1404static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
1405 .get_adapter_status = asus_get_adapter_status,
1406 .get_power_status = asus_get_adapter_status,
1407};
1408
1409static void asus_hotplug_work(struct work_struct *work)
1410{
1411 struct asus_wmi *asus;
1412
1413 asus = container_of(work, struct asus_wmi, hotplug_work);
1414 asus_rfkill_hotplug(asus);
1415}
1416
1417static int asus_setup_pci_hotplug(struct asus_wmi *asus)
1418{
1419 int ret = -ENOMEM;
1420 struct pci_bus *bus = pci_find_bus(0, 1);
1421
1422 if (!bus) {
1423 pr_err("Unable to find wifi PCI bus\n");
1424 return -ENODEV;
1425 }
1426
1427 asus->hotplug_workqueue =
1428 create_singlethread_workqueue("hotplug_workqueue");
1429 if (!asus->hotplug_workqueue)
1430 goto error_workqueue;
1431
1432 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
1433
1434 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
1435
1436 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
1437 if (ret) {
1438 pr_err("Unable to register hotplug slot - %d\n", ret);
1439 goto error_register;
1440 }
1441
1442 return 0;
1443
1444error_register:
1445 asus->hotplug_slot.ops = NULL;
1446 destroy_workqueue(asus->hotplug_workqueue);
1447error_workqueue:
1448 return ret;
1449}
1450
1451/*
1452 * Rfkill devices
1453 */
1454static int asus_rfkill_set(void *data, bool blocked)
1455{
1456 struct asus_rfkill *priv = data;
1457 u32 ctrl_param = !blocked;
1458 u32 dev_id = priv->dev_id;
1459
1460 /*
1461 * If the user bit is set, BIOS can't set and record the wlan status,
1462 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
1463 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
1464 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
1465 * while setting the wlan status through WMI.
1466 * This is also the behavior that windows app will do.
1467 */
1468 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1469 priv->asus->driver->wlan_ctrl_by_user)
1470 dev_id = ASUS_WMI_DEVID_WLAN_LED;
1471
1472 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
1473}
1474
1475static void asus_rfkill_query(struct rfkill *rfkill, void *data)
1476{
1477 struct asus_rfkill *priv = data;
1478 int result;
1479
1480 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
1481
1482 if (result < 0)
1483 return;
1484
1485 rfkill_set_sw_state(priv->rfkill, !result);
1486}
1487
1488static int asus_rfkill_wlan_set(void *data, bool blocked)
1489{
1490 struct asus_rfkill *priv = data;
1491 struct asus_wmi *asus = priv->asus;
1492 int ret;
1493
1494 /*
1495 * This handler is enabled only if hotplug is enabled.
1496 * In this case, the asus_wmi_set_devstate() will
1497 * trigger a wmi notification and we need to wait
1498 * this call to finish before being able to call
1499 * any wmi method
1500 */
1501 mutex_lock(&asus->wmi_lock);
1502 ret = asus_rfkill_set(data, blocked);
1503 mutex_unlock(&asus->wmi_lock);
1504 return ret;
1505}
1506
1507static const struct rfkill_ops asus_rfkill_wlan_ops = {
1508 .set_block = asus_rfkill_wlan_set,
1509 .query = asus_rfkill_query,
1510};
1511
1512static const struct rfkill_ops asus_rfkill_ops = {
1513 .set_block = asus_rfkill_set,
1514 .query = asus_rfkill_query,
1515};
1516
1517static int asus_new_rfkill(struct asus_wmi *asus,
1518 struct asus_rfkill *arfkill,
1519 const char *name, enum rfkill_type type, int dev_id)
1520{
1521 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1522 struct rfkill **rfkill = &arfkill->rfkill;
1523
1524 if (result < 0)
1525 return result;
1526
1527 arfkill->dev_id = dev_id;
1528 arfkill->asus = asus;
1529
1530 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1531 asus->driver->quirks->hotplug_wireless)
1532 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1533 &asus_rfkill_wlan_ops, arfkill);
1534 else
1535 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1536 &asus_rfkill_ops, arfkill);
1537
1538 if (!*rfkill)
1539 return -EINVAL;
1540
1541 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1542 (asus->driver->quirks->wapf > 0))
1543 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1544
1545 rfkill_init_sw_state(*rfkill, !result);
1546 result = rfkill_register(*rfkill);
1547 if (result) {
1548 rfkill_destroy(*rfkill);
1549 *rfkill = NULL;
1550 return result;
1551 }
1552 return 0;
1553}
1554
1555static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1556{
1557 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1558 return;
1559
1560 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1561 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1562 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1563 if (asus->wlan.rfkill) {
1564 rfkill_unregister(asus->wlan.rfkill);
1565 rfkill_destroy(asus->wlan.rfkill);
1566 asus->wlan.rfkill = NULL;
1567 }
1568 /*
1569 * Refresh pci hotplug in case the rfkill state was changed after
1570 * asus_unregister_rfkill_notifier()
1571 */
1572 asus_rfkill_hotplug(asus);
1573 if (asus->hotplug_slot.ops)
1574 pci_hp_deregister(&asus->hotplug_slot);
1575 if (asus->hotplug_workqueue)
1576 destroy_workqueue(asus->hotplug_workqueue);
1577
1578 if (asus->bluetooth.rfkill) {
1579 rfkill_unregister(asus->bluetooth.rfkill);
1580 rfkill_destroy(asus->bluetooth.rfkill);
1581 asus->bluetooth.rfkill = NULL;
1582 }
1583 if (asus->wimax.rfkill) {
1584 rfkill_unregister(asus->wimax.rfkill);
1585 rfkill_destroy(asus->wimax.rfkill);
1586 asus->wimax.rfkill = NULL;
1587 }
1588 if (asus->wwan3g.rfkill) {
1589 rfkill_unregister(asus->wwan3g.rfkill);
1590 rfkill_destroy(asus->wwan3g.rfkill);
1591 asus->wwan3g.rfkill = NULL;
1592 }
1593 if (asus->gps.rfkill) {
1594 rfkill_unregister(asus->gps.rfkill);
1595 rfkill_destroy(asus->gps.rfkill);
1596 asus->gps.rfkill = NULL;
1597 }
1598 if (asus->uwb.rfkill) {
1599 rfkill_unregister(asus->uwb.rfkill);
1600 rfkill_destroy(asus->uwb.rfkill);
1601 asus->uwb.rfkill = NULL;
1602 }
1603}
1604
1605static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1606{
1607 int result = 0;
1608
1609 mutex_init(&asus->hotplug_lock);
1610 mutex_init(&asus->wmi_lock);
1611
1612 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1613 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1614
1615 if (result && result != -ENODEV)
1616 goto exit;
1617
1618 result = asus_new_rfkill(asus, &asus->bluetooth,
1619 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1620 ASUS_WMI_DEVID_BLUETOOTH);
1621
1622 if (result && result != -ENODEV)
1623 goto exit;
1624
1625 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1626 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1627
1628 if (result && result != -ENODEV)
1629 goto exit;
1630
1631 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1632 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1633
1634 if (result && result != -ENODEV)
1635 goto exit;
1636
1637 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1638 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1639
1640 if (result && result != -ENODEV)
1641 goto exit;
1642
1643 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1644 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1645
1646 if (result && result != -ENODEV)
1647 goto exit;
1648
1649 if (!asus->driver->quirks->hotplug_wireless)
1650 goto exit;
1651
1652 result = asus_setup_pci_hotplug(asus);
1653 /*
1654 * If we get -EBUSY then something else is handling the PCI hotplug -
1655 * don't fail in this case
1656 */
1657 if (result == -EBUSY)
1658 result = 0;
1659
1660 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1661 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1662 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1663 /*
1664 * Refresh pci hotplug in case the rfkill state was changed during
1665 * setup.
1666 */
1667 asus_rfkill_hotplug(asus);
1668
1669exit:
1670 if (result && result != -ENODEV)
1671 asus_wmi_rfkill_exit(asus);
1672
1673 if (result == -ENODEV)
1674 result = 0;
1675
1676 return result;
1677}
1678
1679/* Panel Overdrive ************************************************************/
1680static ssize_t panel_od_show(struct device *dev,
1681 struct device_attribute *attr, char *buf)
1682{
1683 struct asus_wmi *asus = dev_get_drvdata(dev);
1684 int result;
1685
1686 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_PANEL_OD);
1687 if (result < 0)
1688 return result;
1689
1690 return sysfs_emit(buf, "%d\n", result);
1691}
1692
1693static ssize_t panel_od_store(struct device *dev,
1694 struct device_attribute *attr,
1695 const char *buf, size_t count)
1696{
1697 int result, err;
1698 u32 overdrive;
1699
1700 struct asus_wmi *asus = dev_get_drvdata(dev);
1701
1702 result = kstrtou32(buf, 10, &overdrive);
1703 if (result)
1704 return result;
1705
1706 if (overdrive > 1)
1707 return -EINVAL;
1708
1709 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_PANEL_OD, overdrive, &result);
1710
1711 if (err) {
1712 pr_warn("Failed to set panel overdrive: %d\n", err);
1713 return err;
1714 }
1715
1716 if (result > 1) {
1717 pr_warn("Failed to set panel overdrive (result): 0x%x\n", result);
1718 return -EIO;
1719 }
1720
1721 sysfs_notify(&asus->platform_device->dev.kobj, NULL, "panel_od");
1722
1723 return count;
1724}
1725static DEVICE_ATTR_RW(panel_od);
1726
1727/* Quirks *********************************************************************/
1728
1729static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1730{
1731 struct pci_dev *xhci_pdev;
1732 u32 orig_ports_available;
1733 u32 ports_available = asus->driver->quirks->xusb2pr;
1734
1735 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1736 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1737 NULL);
1738
1739 if (!xhci_pdev)
1740 return;
1741
1742 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1743 &orig_ports_available);
1744
1745 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1746 cpu_to_le32(ports_available));
1747
1748 pci_dev_put(xhci_pdev);
1749
1750 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1751 orig_ports_available, ports_available);
1752}
1753
1754/*
1755 * Some devices dont support or have borcken get_als method
1756 * but still support set method.
1757 */
1758static void asus_wmi_set_als(void)
1759{
1760 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1761}
1762
1763/* Hwmon device ***************************************************************/
1764
1765static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1766 int *speed)
1767{
1768 struct agfn_fan_args args = {
1769 .agfn.len = sizeof(args),
1770 .agfn.mfun = ASUS_FAN_MFUN,
1771 .agfn.sfun = ASUS_FAN_SFUN_READ,
1772 .fan = fan,
1773 .speed = 0,
1774 };
1775 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1776 int status;
1777
1778 if (fan != 1)
1779 return -EINVAL;
1780
1781 status = asus_wmi_evaluate_method_agfn(input);
1782
1783 if (status || args.agfn.err)
1784 return -ENXIO;
1785
1786 if (speed)
1787 *speed = args.speed;
1788
1789 return 0;
1790}
1791
1792static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1793 int *speed)
1794{
1795 struct agfn_fan_args args = {
1796 .agfn.len = sizeof(args),
1797 .agfn.mfun = ASUS_FAN_MFUN,
1798 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1799 .fan = fan,
1800 .speed = speed ? *speed : 0,
1801 };
1802 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1803 int status;
1804
1805 /* 1: for setting 1st fan's speed 0: setting auto mode */
1806 if (fan != 1 && fan != 0)
1807 return -EINVAL;
1808
1809 status = asus_wmi_evaluate_method_agfn(input);
1810
1811 if (status || args.agfn.err)
1812 return -ENXIO;
1813
1814 if (speed && fan == 1)
1815 asus->agfn_pwm = *speed;
1816
1817 return 0;
1818}
1819
1820/*
1821 * Check if we can read the speed of one fan. If true we assume we can also
1822 * control it.
1823 */
1824static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1825{
1826 int status;
1827 int speed;
1828 u32 value;
1829
1830 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1831 if (status != 0)
1832 return false;
1833
1834 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1835 if (status != 0)
1836 return false;
1837
1838 /*
1839 * We need to find a better way, probably using sfun,
1840 * bits or spec ...
1841 * Currently we disable it if:
1842 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1843 * - reverved bits are non-zero
1844 * - sfun and presence bit are not set
1845 */
1846 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1847 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1848}
1849
1850static int asus_fan_set_auto(struct asus_wmi *asus)
1851{
1852 int status;
1853 u32 retval;
1854
1855 switch (asus->fan_type) {
1856 case FAN_TYPE_SPEC83:
1857 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1858 0, &retval);
1859 if (status)
1860 return status;
1861
1862 if (retval != 1)
1863 return -EIO;
1864 break;
1865
1866 case FAN_TYPE_AGFN:
1867 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1868 if (status)
1869 return -ENXIO;
1870 break;
1871
1872 default:
1873 return -ENXIO;
1874 }
1875
1876 /*
1877 * Modern models like the G713 also have GPU fan control (this is not AGFN)
1878 */
1879 if (asus->gpu_fan_type == FAN_TYPE_SPEC83) {
1880 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_GPU_FAN_CTRL,
1881 0, &retval);
1882 if (status)
1883 return status;
1884
1885 if (retval != 1)
1886 return -EIO;
1887 }
1888
1889 return 0;
1890}
1891
1892static ssize_t pwm1_show(struct device *dev,
1893 struct device_attribute *attr,
1894 char *buf)
1895{
1896 struct asus_wmi *asus = dev_get_drvdata(dev);
1897 int err;
1898 int value;
1899
1900 /* If we already set a value then just return it */
1901 if (asus->agfn_pwm >= 0)
1902 return sprintf(buf, "%d\n", asus->agfn_pwm);
1903
1904 /*
1905 * If we haven't set already set a value through the AGFN interface,
1906 * we read a current value through the (now-deprecated) FAN_CTRL device.
1907 */
1908 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1909 if (err < 0)
1910 return err;
1911
1912 value &= 0xFF;
1913
1914 if (value == 1) /* Low Speed */
1915 value = 85;
1916 else if (value == 2)
1917 value = 170;
1918 else if (value == 3)
1919 value = 255;
1920 else if (value) {
1921 pr_err("Unknown fan speed %#x\n", value);
1922 value = -1;
1923 }
1924
1925 return sysfs_emit(buf, "%d\n", value);
1926}
1927
1928static ssize_t pwm1_store(struct device *dev,
1929 struct device_attribute *attr,
1930 const char *buf, size_t count) {
1931 struct asus_wmi *asus = dev_get_drvdata(dev);
1932 int value;
1933 int state;
1934 int ret;
1935
1936 ret = kstrtouint(buf, 10, &value);
1937 if (ret)
1938 return ret;
1939
1940 value = clamp(value, 0, 255);
1941
1942 state = asus_agfn_fan_speed_write(asus, 1, &value);
1943 if (state)
1944 pr_warn("Setting fan speed failed: %d\n", state);
1945 else
1946 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1947
1948 return count;
1949}
1950
1951static ssize_t fan1_input_show(struct device *dev,
1952 struct device_attribute *attr,
1953 char *buf)
1954{
1955 struct asus_wmi *asus = dev_get_drvdata(dev);
1956 int value;
1957 int ret;
1958
1959 switch (asus->fan_type) {
1960 case FAN_TYPE_SPEC83:
1961 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1962 &value);
1963 if (ret < 0)
1964 return ret;
1965
1966 value &= 0xffff;
1967 break;
1968
1969 case FAN_TYPE_AGFN:
1970 /* no speed readable on manual mode */
1971 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1972 return -ENXIO;
1973
1974 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1975 if (ret) {
1976 pr_warn("reading fan speed failed: %d\n", ret);
1977 return -ENXIO;
1978 }
1979 break;
1980
1981 default:
1982 return -ENXIO;
1983 }
1984
1985 return sysfs_emit(buf, "%d\n", value < 0 ? -1 : value * 100);
1986}
1987
1988static ssize_t pwm1_enable_show(struct device *dev,
1989 struct device_attribute *attr,
1990 char *buf)
1991{
1992 struct asus_wmi *asus = dev_get_drvdata(dev);
1993
1994 /*
1995 * Just read back the cached pwm mode.
1996 *
1997 * For the CPU_FAN device, the spec indicates that we should be
1998 * able to read the device status and consult bit 19 to see if we
1999 * are in Full On or Automatic mode. However, this does not work
2000 * in practice on X532FL at least (the bit is always 0) and there's
2001 * also nothing in the DSDT to indicate that this behaviour exists.
2002 */
2003 return sysfs_emit(buf, "%d\n", asus->fan_pwm_mode);
2004}
2005
2006static ssize_t pwm1_enable_store(struct device *dev,
2007 struct device_attribute *attr,
2008 const char *buf, size_t count)
2009{
2010 struct asus_wmi *asus = dev_get_drvdata(dev);
2011 int status = 0;
2012 int state;
2013 int value;
2014 int ret;
2015 u32 retval;
2016
2017 ret = kstrtouint(buf, 10, &state);
2018 if (ret)
2019 return ret;
2020
2021 if (asus->fan_type == FAN_TYPE_SPEC83) {
2022 switch (state) { /* standard documented hwmon values */
2023 case ASUS_FAN_CTRL_FULLSPEED:
2024 value = 1;
2025 break;
2026 case ASUS_FAN_CTRL_AUTO:
2027 value = 0;
2028 break;
2029 default:
2030 return -EINVAL;
2031 }
2032
2033 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
2034 value, &retval);
2035 if (ret)
2036 return ret;
2037
2038 if (retval != 1)
2039 return -EIO;
2040 } else if (asus->fan_type == FAN_TYPE_AGFN) {
2041 switch (state) {
2042 case ASUS_FAN_CTRL_MANUAL:
2043 break;
2044
2045 case ASUS_FAN_CTRL_AUTO:
2046 status = asus_fan_set_auto(asus);
2047 if (status)
2048 return status;
2049 break;
2050
2051 default:
2052 return -EINVAL;
2053 }
2054 }
2055
2056 asus->fan_pwm_mode = state;
2057
2058 /* Must set to disabled if mode is toggled */
2059 if (asus->cpu_fan_curve_available)
2060 asus->custom_fan_curves[FAN_CURVE_DEV_CPU].enabled = false;
2061 if (asus->gpu_fan_curve_available)
2062 asus->custom_fan_curves[FAN_CURVE_DEV_GPU].enabled = false;
2063
2064 return count;
2065}
2066
2067static ssize_t fan1_label_show(struct device *dev,
2068 struct device_attribute *attr,
2069 char *buf)
2070{
2071 return sysfs_emit(buf, "%s\n", ASUS_FAN_DESC);
2072}
2073
2074static ssize_t asus_hwmon_temp1(struct device *dev,
2075 struct device_attribute *attr,
2076 char *buf)
2077{
2078 struct asus_wmi *asus = dev_get_drvdata(dev);
2079 u32 value;
2080 int err;
2081
2082 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
2083 if (err < 0)
2084 return err;
2085
2086 return sprintf(buf, "%ld\n",
2087 deci_kelvin_to_millicelsius(value & 0xFFFF));
2088}
2089
2090/* GPU fan on modern ROG laptops */
2091static ssize_t fan2_input_show(struct device *dev,
2092 struct device_attribute *attr,
2093 char *buf)
2094{
2095 struct asus_wmi *asus = dev_get_drvdata(dev);
2096 int value;
2097 int ret;
2098
2099 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_GPU_FAN_CTRL, &value);
2100 if (ret < 0)
2101 return ret;
2102
2103 value &= 0xffff;
2104
2105 return sysfs_emit(buf, "%d\n", value * 100);
2106}
2107
2108static ssize_t fan2_label_show(struct device *dev,
2109 struct device_attribute *attr,
2110 char *buf)
2111{
2112 return sysfs_emit(buf, "%s\n", ASUS_GPU_FAN_DESC);
2113}
2114
2115static ssize_t pwm2_enable_show(struct device *dev,
2116 struct device_attribute *attr,
2117 char *buf)
2118{
2119 struct asus_wmi *asus = dev_get_drvdata(dev);
2120
2121 return sysfs_emit(buf, "%d\n", asus->gpu_fan_pwm_mode);
2122}
2123
2124static ssize_t pwm2_enable_store(struct device *dev,
2125 struct device_attribute *attr,
2126 const char *buf, size_t count)
2127{
2128 struct asus_wmi *asus = dev_get_drvdata(dev);
2129 int state;
2130 int value;
2131 int ret;
2132 u32 retval;
2133
2134 ret = kstrtouint(buf, 10, &state);
2135 if (ret)
2136 return ret;
2137
2138 switch (state) { /* standard documented hwmon values */
2139 case ASUS_FAN_CTRL_FULLSPEED:
2140 value = 1;
2141 break;
2142 case ASUS_FAN_CTRL_AUTO:
2143 value = 0;
2144 break;
2145 default:
2146 return -EINVAL;
2147 }
2148
2149 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_GPU_FAN_CTRL,
2150 value, &retval);
2151 if (ret)
2152 return ret;
2153
2154 if (retval != 1)
2155 return -EIO;
2156
2157 asus->gpu_fan_pwm_mode = state;
2158 return count;
2159}
2160
2161/* Fan1 */
2162static DEVICE_ATTR_RW(pwm1);
2163static DEVICE_ATTR_RW(pwm1_enable);
2164static DEVICE_ATTR_RO(fan1_input);
2165static DEVICE_ATTR_RO(fan1_label);
2166/* Fan2 - GPU fan */
2167static DEVICE_ATTR_RW(pwm2_enable);
2168static DEVICE_ATTR_RO(fan2_input);
2169static DEVICE_ATTR_RO(fan2_label);
2170
2171/* Temperature */
2172static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
2173
2174static struct attribute *hwmon_attributes[] = {
2175 &dev_attr_pwm1.attr,
2176 &dev_attr_pwm1_enable.attr,
2177 &dev_attr_pwm2_enable.attr,
2178 &dev_attr_fan1_input.attr,
2179 &dev_attr_fan1_label.attr,
2180 &dev_attr_fan2_input.attr,
2181 &dev_attr_fan2_label.attr,
2182
2183 &dev_attr_temp1_input.attr,
2184 NULL
2185};
2186
2187static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
2188 struct attribute *attr, int idx)
2189{
2190 struct device *dev = kobj_to_dev(kobj);
2191 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
2192 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
2193
2194 if (attr == &dev_attr_pwm1.attr) {
2195 if (asus->fan_type != FAN_TYPE_AGFN)
2196 return 0;
2197 } else if (attr == &dev_attr_fan1_input.attr
2198 || attr == &dev_attr_fan1_label.attr
2199 || attr == &dev_attr_pwm1_enable.attr) {
2200 if (asus->fan_type == FAN_TYPE_NONE)
2201 return 0;
2202 } else if (attr == &dev_attr_fan2_input.attr
2203 || attr == &dev_attr_fan2_label.attr
2204 || attr == &dev_attr_pwm2_enable.attr) {
2205 if (asus->gpu_fan_type == FAN_TYPE_NONE)
2206 return 0;
2207 } else if (attr == &dev_attr_temp1_input.attr) {
2208 int err = asus_wmi_get_devstate(asus,
2209 ASUS_WMI_DEVID_THERMAL_CTRL,
2210 &value);
2211
2212 if (err < 0)
2213 return 0; /* can't return negative here */
2214
2215 /*
2216 * If the temperature value in deci-Kelvin is near the absolute
2217 * zero temperature, something is clearly wrong
2218 */
2219 if (value == 0 || value == 1)
2220 return 0;
2221 }
2222
2223 return attr->mode;
2224}
2225
2226static const struct attribute_group hwmon_attribute_group = {
2227 .is_visible = asus_hwmon_sysfs_is_visible,
2228 .attrs = hwmon_attributes
2229};
2230__ATTRIBUTE_GROUPS(hwmon_attribute);
2231
2232static int asus_wmi_hwmon_init(struct asus_wmi *asus)
2233{
2234 struct device *dev = &asus->platform_device->dev;
2235 struct device *hwmon;
2236
2237 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
2238 hwmon_attribute_groups);
2239
2240 if (IS_ERR(hwmon)) {
2241 pr_err("Could not register asus hwmon device\n");
2242 return PTR_ERR(hwmon);
2243 }
2244 return 0;
2245}
2246
2247static int asus_wmi_fan_init(struct asus_wmi *asus)
2248{
2249 asus->gpu_fan_type = FAN_TYPE_NONE;
2250 asus->fan_type = FAN_TYPE_NONE;
2251 asus->agfn_pwm = -1;
2252
2253 if (asus->driver->quirks->wmi_ignore_fan)
2254 asus->fan_type = FAN_TYPE_NONE;
2255 else if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
2256 asus->fan_type = FAN_TYPE_SPEC83;
2257 else if (asus_wmi_has_agfn_fan(asus))
2258 asus->fan_type = FAN_TYPE_AGFN;
2259
2260 /* Modern models like G713 also have GPU fan control */
2261 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_GPU_FAN_CTRL))
2262 asus->gpu_fan_type = FAN_TYPE_SPEC83;
2263
2264 if (asus->fan_type == FAN_TYPE_NONE)
2265 return -ENODEV;
2266
2267 asus_fan_set_auto(asus);
2268 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
2269 return 0;
2270}
2271
2272/* Fan mode *******************************************************************/
2273
2274static int fan_boost_mode_check_present(struct asus_wmi *asus)
2275{
2276 u32 result;
2277 int err;
2278
2279 asus->fan_boost_mode_available = false;
2280
2281 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
2282 &result);
2283 if (err) {
2284 if (err == -ENODEV)
2285 return 0;
2286 else
2287 return err;
2288 }
2289
2290 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2291 (result & ASUS_FAN_BOOST_MODES_MASK)) {
2292 asus->fan_boost_mode_available = true;
2293 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
2294 }
2295
2296 return 0;
2297}
2298
2299static int fan_boost_mode_write(struct asus_wmi *asus)
2300{
2301 u32 retval;
2302 u8 value;
2303 int err;
2304
2305 value = asus->fan_boost_mode;
2306
2307 pr_info("Set fan boost mode: %u\n", value);
2308 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
2309 &retval);
2310
2311 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
2312 "fan_boost_mode");
2313
2314 if (err) {
2315 pr_warn("Failed to set fan boost mode: %d\n", err);
2316 return err;
2317 }
2318
2319 if (retval != 1) {
2320 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
2321 retval);
2322 return -EIO;
2323 }
2324
2325 return 0;
2326}
2327
2328static int fan_boost_mode_switch_next(struct asus_wmi *asus)
2329{
2330 u8 mask = asus->fan_boost_mode_mask;
2331
2332 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
2333 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
2334 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
2335 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
2336 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
2337 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
2338 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
2339 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
2340 else
2341 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
2342 } else {
2343 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
2344 }
2345
2346 return fan_boost_mode_write(asus);
2347}
2348
2349static ssize_t fan_boost_mode_show(struct device *dev,
2350 struct device_attribute *attr, char *buf)
2351{
2352 struct asus_wmi *asus = dev_get_drvdata(dev);
2353
2354 return sysfs_emit(buf, "%d\n", asus->fan_boost_mode);
2355}
2356
2357static ssize_t fan_boost_mode_store(struct device *dev,
2358 struct device_attribute *attr,
2359 const char *buf, size_t count)
2360{
2361 struct asus_wmi *asus = dev_get_drvdata(dev);
2362 u8 mask = asus->fan_boost_mode_mask;
2363 u8 new_mode;
2364 int result;
2365
2366 result = kstrtou8(buf, 10, &new_mode);
2367 if (result < 0) {
2368 pr_warn("Trying to store invalid value\n");
2369 return result;
2370 }
2371
2372 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
2373 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
2374 return -EINVAL;
2375 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
2376 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
2377 return -EINVAL;
2378 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
2379 return -EINVAL;
2380 }
2381
2382 asus->fan_boost_mode = new_mode;
2383 fan_boost_mode_write(asus);
2384
2385 return count;
2386}
2387
2388// Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
2389static DEVICE_ATTR_RW(fan_boost_mode);
2390
2391/* Custom fan curves **********************************************************/
2392
2393static void fan_curve_copy_from_buf(struct fan_curve_data *data, u8 *buf)
2394{
2395 int i;
2396
2397 for (i = 0; i < FAN_CURVE_POINTS; i++) {
2398 data->temps[i] = buf[i];
2399 }
2400
2401 for (i = 0; i < FAN_CURVE_POINTS; i++) {
2402 data->percents[i] =
2403 255 * buf[i + FAN_CURVE_POINTS] / 100;
2404 }
2405}
2406
2407static int fan_curve_get_factory_default(struct asus_wmi *asus, u32 fan_dev)
2408{
2409 struct fan_curve_data *curves;
2410 u8 buf[FAN_CURVE_BUF_LEN];
2411 int fan_idx = 0;
2412 u8 mode = 0;
2413 int err;
2414
2415 if (asus->throttle_thermal_policy_available)
2416 mode = asus->throttle_thermal_policy_mode;
2417 /* DEVID_<C/G>PU_FAN_CURVE is switched for OVERBOOST vs SILENT */
2418 if (mode == 2)
2419 mode = 1;
2420 else if (mode == 1)
2421 mode = 2;
2422
2423 if (fan_dev == ASUS_WMI_DEVID_GPU_FAN_CURVE)
2424 fan_idx = FAN_CURVE_DEV_GPU;
2425
2426 curves = &asus->custom_fan_curves[fan_idx];
2427 err = asus_wmi_evaluate_method_buf(asus->dsts_id, fan_dev, mode, buf,
2428 FAN_CURVE_BUF_LEN);
2429 if (err) {
2430 pr_warn("%s (0x%08x) failed: %d\n", __func__, fan_dev, err);
2431 return err;
2432 }
2433
2434 fan_curve_copy_from_buf(curves, buf);
2435 curves->device_id = fan_dev;
2436
2437 return 0;
2438}
2439
2440/* Check if capability exists, and populate defaults */
2441static int fan_curve_check_present(struct asus_wmi *asus, bool *available,
2442 u32 fan_dev)
2443{
2444 int err;
2445
2446 *available = false;
2447
2448 if (asus->fan_type == FAN_TYPE_NONE)
2449 return 0;
2450
2451 err = fan_curve_get_factory_default(asus, fan_dev);
2452 if (err) {
2453 return 0;
2454 }
2455
2456 *available = true;
2457 return 0;
2458}
2459
2460/* Determine which fan the attribute is for if SENSOR_ATTR */
2461static struct fan_curve_data *fan_curve_attr_select(struct asus_wmi *asus,
2462 struct device_attribute *attr)
2463{
2464 int index = to_sensor_dev_attr(attr)->index;
2465
2466 return &asus->custom_fan_curves[index & FAN_CURVE_DEV_GPU];
2467}
2468
2469/* Determine which fan the attribute is for if SENSOR_ATTR_2 */
2470static struct fan_curve_data *fan_curve_attr_2_select(struct asus_wmi *asus,
2471 struct device_attribute *attr)
2472{
2473 int nr = to_sensor_dev_attr_2(attr)->nr;
2474
2475 return &asus->custom_fan_curves[nr & FAN_CURVE_DEV_GPU];
2476}
2477
2478static ssize_t fan_curve_show(struct device *dev,
2479 struct device_attribute *attr, char *buf)
2480{
2481 struct sensor_device_attribute_2 *dev_attr = to_sensor_dev_attr_2(attr);
2482 struct asus_wmi *asus = dev_get_drvdata(dev);
2483 struct fan_curve_data *data;
2484 int value, index, nr;
2485
2486 data = fan_curve_attr_2_select(asus, attr);
2487 index = dev_attr->index;
2488 nr = dev_attr->nr;
2489
2490 if (nr & FAN_CURVE_PWM_MASK)
2491 value = data->percents[index];
2492 else
2493 value = data->temps[index];
2494
2495 return sysfs_emit(buf, "%d\n", value);
2496}
2497
2498/*
2499 * "fan_dev" is the related WMI method such as ASUS_WMI_DEVID_CPU_FAN_CURVE.
2500 */
2501static int fan_curve_write(struct asus_wmi *asus,
2502 struct fan_curve_data *data)
2503{
2504 u32 arg1 = 0, arg2 = 0, arg3 = 0, arg4 = 0;
2505 u8 *percents = data->percents;
2506 u8 *temps = data->temps;
2507 int ret, i, shift = 0;
2508
2509 if (!data->enabled)
2510 return 0;
2511
2512 for (i = 0; i < FAN_CURVE_POINTS / 2; i++) {
2513 arg1 += (temps[i]) << shift;
2514 arg2 += (temps[i + 4]) << shift;
2515 /* Scale to percentage for device */
2516 arg3 += (100 * percents[i] / 255) << shift;
2517 arg4 += (100 * percents[i + 4] / 255) << shift;
2518 shift += 8;
2519 }
2520
2521 return asus_wmi_evaluate_method5(ASUS_WMI_METHODID_DEVS,
2522 data->device_id,
2523 arg1, arg2, arg3, arg4, &ret);
2524}
2525
2526static ssize_t fan_curve_store(struct device *dev,
2527 struct device_attribute *attr, const char *buf,
2528 size_t count)
2529{
2530 struct sensor_device_attribute_2 *dev_attr = to_sensor_dev_attr_2(attr);
2531 struct asus_wmi *asus = dev_get_drvdata(dev);
2532 struct fan_curve_data *data;
2533 u8 value;
2534 int err;
2535
2536 int pwm = dev_attr->nr & FAN_CURVE_PWM_MASK;
2537 int index = dev_attr->index;
2538
2539 data = fan_curve_attr_2_select(asus, attr);
2540
2541 err = kstrtou8(buf, 10, &value);
2542 if (err < 0)
2543 return err;
2544
2545 if (pwm) {
2546 data->percents[index] = value;
2547 } else {
2548 data->temps[index] = value;
2549 }
2550
2551 /*
2552 * Mark as disabled so the user has to explicitly enable to apply a
2553 * changed fan curve. This prevents potential lockups from writing out
2554 * many changes as one-write-per-change.
2555 */
2556 data->enabled = false;
2557
2558 return count;
2559}
2560
2561static ssize_t fan_curve_enable_show(struct device *dev,
2562 struct device_attribute *attr, char *buf)
2563{
2564 struct asus_wmi *asus = dev_get_drvdata(dev);
2565 struct fan_curve_data *data;
2566 int out = 2;
2567
2568 data = fan_curve_attr_select(asus, attr);
2569
2570 if (data->enabled)
2571 out = 1;
2572
2573 return sysfs_emit(buf, "%d\n", out);
2574}
2575
2576static ssize_t fan_curve_enable_store(struct device *dev,
2577 struct device_attribute *attr,
2578 const char *buf, size_t count)
2579{
2580 struct asus_wmi *asus = dev_get_drvdata(dev);
2581 struct fan_curve_data *data;
2582 int value, err;
2583
2584 data = fan_curve_attr_select(asus, attr);
2585
2586 err = kstrtoint(buf, 10, &value);
2587 if (err < 0)
2588 return err;
2589
2590 switch (value) {
2591 case 1:
2592 data->enabled = true;
2593 break;
2594 case 2:
2595 data->enabled = false;
2596 break;
2597 /*
2598 * Auto + reset the fan curve data to defaults. Make it an explicit
2599 * option so that users don't accidentally overwrite a set fan curve.
2600 */
2601 case 3:
2602 err = fan_curve_get_factory_default(asus, data->device_id);
2603 if (err)
2604 return err;
2605 data->enabled = false;
2606 break;
2607 default:
2608 return -EINVAL;
2609 }
2610
2611 if (data->enabled) {
2612 err = fan_curve_write(asus, data);
2613 if (err)
2614 return err;
2615 } else {
2616 /*
2617 * For machines with throttle this is the only way to reset fans
2618 * to default mode of operation (does not erase curve data).
2619 */
2620 if (asus->throttle_thermal_policy_available) {
2621 err = throttle_thermal_policy_write(asus);
2622 if (err)
2623 return err;
2624 /* Similar is true for laptops with this fan */
2625 } else if (asus->fan_type == FAN_TYPE_SPEC83) {
2626 err = asus_fan_set_auto(asus);
2627 if (err)
2628 return err;
2629 } else {
2630 /* Safeguard against fautly ACPI tables */
2631 err = fan_curve_get_factory_default(asus, data->device_id);
2632 if (err)
2633 return err;
2634 err = fan_curve_write(asus, data);
2635 if (err)
2636 return err;
2637 }
2638 }
2639 return count;
2640}
2641
2642/* CPU */
2643static SENSOR_DEVICE_ATTR_RW(pwm1_enable, fan_curve_enable, FAN_CURVE_DEV_CPU);
2644static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, fan_curve,
2645 FAN_CURVE_DEV_CPU, 0);
2646static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, fan_curve,
2647 FAN_CURVE_DEV_CPU, 1);
2648static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, fan_curve,
2649 FAN_CURVE_DEV_CPU, 2);
2650static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, fan_curve,
2651 FAN_CURVE_DEV_CPU, 3);
2652static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, fan_curve,
2653 FAN_CURVE_DEV_CPU, 4);
2654static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point6_temp, fan_curve,
2655 FAN_CURVE_DEV_CPU, 5);
2656static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point7_temp, fan_curve,
2657 FAN_CURVE_DEV_CPU, 6);
2658static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point8_temp, fan_curve,
2659 FAN_CURVE_DEV_CPU, 7);
2660
2661static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, fan_curve,
2662 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 0);
2663static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, fan_curve,
2664 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 1);
2665static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_pwm, fan_curve,
2666 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 2);
2667static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_pwm, fan_curve,
2668 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 3);
2669static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_pwm, fan_curve,
2670 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 4);
2671static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point6_pwm, fan_curve,
2672 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 5);
2673static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point7_pwm, fan_curve,
2674 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 6);
2675static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point8_pwm, fan_curve,
2676 FAN_CURVE_DEV_CPU | FAN_CURVE_PWM_MASK, 7);
2677
2678/* GPU */
2679static SENSOR_DEVICE_ATTR_RW(pwm2_enable, fan_curve_enable, FAN_CURVE_DEV_GPU);
2680static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, fan_curve,
2681 FAN_CURVE_DEV_GPU, 0);
2682static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, fan_curve,
2683 FAN_CURVE_DEV_GPU, 1);
2684static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, fan_curve,
2685 FAN_CURVE_DEV_GPU, 2);
2686static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, fan_curve,
2687 FAN_CURVE_DEV_GPU, 3);
2688static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, fan_curve,
2689 FAN_CURVE_DEV_GPU, 4);
2690static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point6_temp, fan_curve,
2691 FAN_CURVE_DEV_GPU, 5);
2692static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point7_temp, fan_curve,
2693 FAN_CURVE_DEV_GPU, 6);
2694static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point8_temp, fan_curve,
2695 FAN_CURVE_DEV_GPU, 7);
2696
2697static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, fan_curve,
2698 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 0);
2699static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, fan_curve,
2700 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 1);
2701static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_pwm, fan_curve,
2702 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 2);
2703static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_pwm, fan_curve,
2704 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 3);
2705static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_pwm, fan_curve,
2706 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 4);
2707static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point6_pwm, fan_curve,
2708 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 5);
2709static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point7_pwm, fan_curve,
2710 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 6);
2711static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point8_pwm, fan_curve,
2712 FAN_CURVE_DEV_GPU | FAN_CURVE_PWM_MASK, 7);
2713
2714static struct attribute *asus_fan_curve_attr[] = {
2715 /* CPU */
2716 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
2717 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2718 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2719 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2720 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2721 &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr,
2722 &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr,
2723 &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr,
2724 &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr,
2725 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2726 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2727 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2728 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2729 &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr,
2730 &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr,
2731 &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr,
2732 &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr,
2733 /* GPU */
2734 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
2735 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2736 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2737 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2738 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2739 &sensor_dev_attr_pwm2_auto_point5_temp.dev_attr.attr,
2740 &sensor_dev_attr_pwm2_auto_point6_temp.dev_attr.attr,
2741 &sensor_dev_attr_pwm2_auto_point7_temp.dev_attr.attr,
2742 &sensor_dev_attr_pwm2_auto_point8_temp.dev_attr.attr,
2743 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
2744 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2745 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2746 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2747 &sensor_dev_attr_pwm2_auto_point5_pwm.dev_attr.attr,
2748 &sensor_dev_attr_pwm2_auto_point6_pwm.dev_attr.attr,
2749 &sensor_dev_attr_pwm2_auto_point7_pwm.dev_attr.attr,
2750 &sensor_dev_attr_pwm2_auto_point8_pwm.dev_attr.attr,
2751 NULL
2752};
2753
2754static umode_t asus_fan_curve_is_visible(struct kobject *kobj,
2755 struct attribute *attr, int idx)
2756{
2757 struct device *dev = kobj_to_dev(kobj);
2758 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
2759
2760 /*
2761 * Check the char instead of casting attr as there are two attr types
2762 * involved here (attr1 and attr2)
2763 */
2764 if (asus->cpu_fan_curve_available && attr->name[3] == '1')
2765 return 0644;
2766
2767 if (asus->gpu_fan_curve_available && attr->name[3] == '2')
2768 return 0644;
2769
2770 return 0;
2771}
2772
2773static const struct attribute_group asus_fan_curve_attr_group = {
2774 .is_visible = asus_fan_curve_is_visible,
2775 .attrs = asus_fan_curve_attr,
2776};
2777__ATTRIBUTE_GROUPS(asus_fan_curve_attr);
2778
2779/*
2780 * Must be initialised after throttle_thermal_policy_check_present() as
2781 * we check the status of throttle_thermal_policy_available during init.
2782 */
2783static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus)
2784{
2785 struct device *dev = &asus->platform_device->dev;
2786 struct device *hwmon;
2787 int err;
2788
2789 err = fan_curve_check_present(asus, &asus->cpu_fan_curve_available,
2790 ASUS_WMI_DEVID_CPU_FAN_CURVE);
2791 if (err)
2792 return err;
2793
2794 err = fan_curve_check_present(asus, &asus->gpu_fan_curve_available,
2795 ASUS_WMI_DEVID_GPU_FAN_CURVE);
2796 if (err)
2797 return err;
2798
2799 if (!asus->cpu_fan_curve_available && !asus->gpu_fan_curve_available)
2800 return 0;
2801
2802 hwmon = devm_hwmon_device_register_with_groups(
2803 dev, "asus_custom_fan_curve", asus, asus_fan_curve_attr_groups);
2804
2805 if (IS_ERR(hwmon)) {
2806 dev_err(dev,
2807 "Could not register asus_custom_fan_curve device\n");
2808 return PTR_ERR(hwmon);
2809 }
2810
2811 return 0;
2812}
2813
2814/* Throttle thermal policy ****************************************************/
2815
2816static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
2817{
2818 u32 result;
2819 int err;
2820
2821 asus->throttle_thermal_policy_available = false;
2822
2823 err = asus_wmi_get_devstate(asus,
2824 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
2825 &result);
2826 if (err) {
2827 if (err == -ENODEV)
2828 return 0;
2829 return err;
2830 }
2831
2832 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
2833 asus->throttle_thermal_policy_available = true;
2834
2835 return 0;
2836}
2837
2838static int throttle_thermal_policy_write(struct asus_wmi *asus)
2839{
2840 int err;
2841 u8 value;
2842 u32 retval;
2843
2844 value = asus->throttle_thermal_policy_mode;
2845
2846 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
2847 value, &retval);
2848
2849 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
2850 "throttle_thermal_policy");
2851
2852 if (err) {
2853 pr_warn("Failed to set throttle thermal policy: %d\n", err);
2854 return err;
2855 }
2856
2857 if (retval != 1) {
2858 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
2859 retval);
2860 return -EIO;
2861 }
2862
2863 /* Must set to disabled if mode is toggled */
2864 if (asus->cpu_fan_curve_available)
2865 asus->custom_fan_curves[FAN_CURVE_DEV_CPU].enabled = false;
2866 if (asus->gpu_fan_curve_available)
2867 asus->custom_fan_curves[FAN_CURVE_DEV_GPU].enabled = false;
2868
2869 return 0;
2870}
2871
2872static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
2873{
2874 if (!asus->throttle_thermal_policy_available)
2875 return 0;
2876
2877 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
2878 return throttle_thermal_policy_write(asus);
2879}
2880
2881static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
2882{
2883 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
2884 int err;
2885
2886 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
2887 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
2888
2889 asus->throttle_thermal_policy_mode = new_mode;
2890 err = throttle_thermal_policy_write(asus);
2891 if (err)
2892 return err;
2893
2894 /*
2895 * Ensure that platform_profile updates userspace with the change to ensure
2896 * that platform_profile and throttle_thermal_policy_mode are in sync.
2897 */
2898 platform_profile_notify();
2899
2900 return 0;
2901}
2902
2903static ssize_t throttle_thermal_policy_show(struct device *dev,
2904 struct device_attribute *attr, char *buf)
2905{
2906 struct asus_wmi *asus = dev_get_drvdata(dev);
2907 u8 mode = asus->throttle_thermal_policy_mode;
2908
2909 return sysfs_emit(buf, "%d\n", mode);
2910}
2911
2912static ssize_t throttle_thermal_policy_store(struct device *dev,
2913 struct device_attribute *attr,
2914 const char *buf, size_t count)
2915{
2916 struct asus_wmi *asus = dev_get_drvdata(dev);
2917 u8 new_mode;
2918 int result;
2919 int err;
2920
2921 result = kstrtou8(buf, 10, &new_mode);
2922 if (result < 0)
2923 return result;
2924
2925 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
2926 return -EINVAL;
2927
2928 asus->throttle_thermal_policy_mode = new_mode;
2929 err = throttle_thermal_policy_write(asus);
2930 if (err)
2931 return err;
2932
2933 /*
2934 * Ensure that platform_profile updates userspace with the change to ensure
2935 * that platform_profile and throttle_thermal_policy_mode are in sync.
2936 */
2937 platform_profile_notify();
2938
2939 return count;
2940}
2941
2942// Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
2943static DEVICE_ATTR_RW(throttle_thermal_policy);
2944
2945/* Platform profile ***********************************************************/
2946static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
2947 enum platform_profile_option *profile)
2948{
2949 struct asus_wmi *asus;
2950 int tp;
2951
2952 asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
2953
2954 tp = asus->throttle_thermal_policy_mode;
2955
2956 switch (tp) {
2957 case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
2958 *profile = PLATFORM_PROFILE_BALANCED;
2959 break;
2960 case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
2961 *profile = PLATFORM_PROFILE_PERFORMANCE;
2962 break;
2963 case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
2964 *profile = PLATFORM_PROFILE_QUIET;
2965 break;
2966 default:
2967 return -EINVAL;
2968 }
2969
2970 return 0;
2971}
2972
2973static int asus_wmi_platform_profile_set(struct platform_profile_handler *pprof,
2974 enum platform_profile_option profile)
2975{
2976 struct asus_wmi *asus;
2977 int tp;
2978
2979 asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
2980
2981 switch (profile) {
2982 case PLATFORM_PROFILE_PERFORMANCE:
2983 tp = ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST;
2984 break;
2985 case PLATFORM_PROFILE_BALANCED:
2986 tp = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
2987 break;
2988 case PLATFORM_PROFILE_QUIET:
2989 tp = ASUS_THROTTLE_THERMAL_POLICY_SILENT;
2990 break;
2991 default:
2992 return -EOPNOTSUPP;
2993 }
2994
2995 asus->throttle_thermal_policy_mode = tp;
2996 return throttle_thermal_policy_write(asus);
2997}
2998
2999static int platform_profile_setup(struct asus_wmi *asus)
3000{
3001 struct device *dev = &asus->platform_device->dev;
3002 int err;
3003
3004 /*
3005 * Not an error if a component platform_profile relies on is unavailable
3006 * so early return, skipping the setup of platform_profile.
3007 */
3008 if (!asus->throttle_thermal_policy_available)
3009 return 0;
3010
3011 dev_info(dev, "Using throttle_thermal_policy for platform_profile support\n");
3012
3013 asus->platform_profile_handler.profile_get = asus_wmi_platform_profile_get;
3014 asus->platform_profile_handler.profile_set = asus_wmi_platform_profile_set;
3015
3016 set_bit(PLATFORM_PROFILE_QUIET, asus->platform_profile_handler.choices);
3017 set_bit(PLATFORM_PROFILE_BALANCED,
3018 asus->platform_profile_handler.choices);
3019 set_bit(PLATFORM_PROFILE_PERFORMANCE,
3020 asus->platform_profile_handler.choices);
3021
3022 err = platform_profile_register(&asus->platform_profile_handler);
3023 if (err)
3024 return err;
3025
3026 asus->platform_profile_support = true;
3027 return 0;
3028}
3029
3030/* Backlight ******************************************************************/
3031
3032static int read_backlight_power(struct asus_wmi *asus)
3033{
3034 int ret;
3035
3036 if (asus->driver->quirks->store_backlight_power)
3037 ret = !asus->driver->panel_power;
3038 else
3039 ret = asus_wmi_get_devstate_simple(asus,
3040 ASUS_WMI_DEVID_BACKLIGHT);
3041
3042 if (ret < 0)
3043 return ret;
3044
3045 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
3046}
3047
3048static int read_brightness_max(struct asus_wmi *asus)
3049{
3050 u32 retval;
3051 int err;
3052
3053 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
3054 if (err < 0)
3055 return err;
3056
3057 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
3058 retval >>= 8;
3059
3060 if (!retval)
3061 return -ENODEV;
3062
3063 return retval;
3064}
3065
3066static int read_brightness(struct backlight_device *bd)
3067{
3068 struct asus_wmi *asus = bl_get_data(bd);
3069 u32 retval;
3070 int err;
3071
3072 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
3073 if (err < 0)
3074 return err;
3075
3076 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
3077}
3078
3079static u32 get_scalar_command(struct backlight_device *bd)
3080{
3081 struct asus_wmi *asus = bl_get_data(bd);
3082 u32 ctrl_param = 0;
3083
3084 if ((asus->driver->brightness < bd->props.brightness) ||
3085 bd->props.brightness == bd->props.max_brightness)
3086 ctrl_param = 0x00008001;
3087 else if ((asus->driver->brightness > bd->props.brightness) ||
3088 bd->props.brightness == 0)
3089 ctrl_param = 0x00008000;
3090
3091 asus->driver->brightness = bd->props.brightness;
3092
3093 return ctrl_param;
3094}
3095
3096static int update_bl_status(struct backlight_device *bd)
3097{
3098 struct asus_wmi *asus = bl_get_data(bd);
3099 u32 ctrl_param;
3100 int power, err = 0;
3101
3102 power = read_backlight_power(asus);
3103 if (power != -ENODEV && bd->props.power != power) {
3104 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
3105 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
3106 ctrl_param, NULL);
3107 if (asus->driver->quirks->store_backlight_power)
3108 asus->driver->panel_power = bd->props.power;
3109
3110 /* When using scalar brightness, updating the brightness
3111 * will mess with the backlight power */
3112 if (asus->driver->quirks->scalar_panel_brightness)
3113 return err;
3114 }
3115
3116 if (asus->driver->quirks->scalar_panel_brightness)
3117 ctrl_param = get_scalar_command(bd);
3118 else
3119 ctrl_param = bd->props.brightness;
3120
3121 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
3122 ctrl_param, NULL);
3123
3124 return err;
3125}
3126
3127static const struct backlight_ops asus_wmi_bl_ops = {
3128 .get_brightness = read_brightness,
3129 .update_status = update_bl_status,
3130};
3131
3132static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
3133{
3134 struct backlight_device *bd = asus->backlight_device;
3135 int old = bd->props.brightness;
3136 int new = old;
3137
3138 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
3139 new = code - NOTIFY_BRNUP_MIN + 1;
3140 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
3141 new = code - NOTIFY_BRNDOWN_MIN;
3142
3143 bd->props.brightness = new;
3144 backlight_update_status(bd);
3145 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
3146
3147 return old;
3148}
3149
3150static int asus_wmi_backlight_init(struct asus_wmi *asus)
3151{
3152 struct backlight_device *bd;
3153 struct backlight_properties props;
3154 int max;
3155 int power;
3156
3157 max = read_brightness_max(asus);
3158 if (max < 0)
3159 return max;
3160
3161 power = read_backlight_power(asus);
3162 if (power == -ENODEV)
3163 power = FB_BLANK_UNBLANK;
3164 else if (power < 0)
3165 return power;
3166
3167 memset(&props, 0, sizeof(struct backlight_properties));
3168 props.type = BACKLIGHT_PLATFORM;
3169 props.max_brightness = max;
3170 bd = backlight_device_register(asus->driver->name,
3171 &asus->platform_device->dev, asus,
3172 &asus_wmi_bl_ops, &props);
3173 if (IS_ERR(bd)) {
3174 pr_err("Could not register backlight device\n");
3175 return PTR_ERR(bd);
3176 }
3177
3178 asus->backlight_device = bd;
3179
3180 if (asus->driver->quirks->store_backlight_power)
3181 asus->driver->panel_power = power;
3182
3183 bd->props.brightness = read_brightness(bd);
3184 bd->props.power = power;
3185 backlight_update_status(bd);
3186
3187 asus->driver->brightness = bd->props.brightness;
3188
3189 return 0;
3190}
3191
3192static void asus_wmi_backlight_exit(struct asus_wmi *asus)
3193{
3194 backlight_device_unregister(asus->backlight_device);
3195
3196 asus->backlight_device = NULL;
3197}
3198
3199static int is_display_toggle(int code)
3200{
3201 /* display toggle keys */
3202 if ((code >= 0x61 && code <= 0x67) ||
3203 (code >= 0x8c && code <= 0x93) ||
3204 (code >= 0xa0 && code <= 0xa7) ||
3205 (code >= 0xd0 && code <= 0xd5))
3206 return 1;
3207
3208 return 0;
3209}
3210
3211/* Fn-lock ********************************************************************/
3212
3213static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
3214{
3215 u32 result;
3216
3217 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
3218
3219 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
3220 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
3221}
3222
3223static void asus_wmi_fnlock_update(struct asus_wmi *asus)
3224{
3225 int mode = asus->fnlock_locked;
3226
3227 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
3228}
3229
3230/* WMI events *****************************************************************/
3231
3232static int asus_wmi_get_event_code(u32 value)
3233{
3234 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
3235 union acpi_object *obj;
3236 acpi_status status;
3237 int code;
3238
3239 status = wmi_get_event_data(value, &response);
3240 if (ACPI_FAILURE(status)) {
3241 pr_warn("Failed to get WMI notify code: %s\n",
3242 acpi_format_exception(status));
3243 return -EIO;
3244 }
3245
3246 obj = (union acpi_object *)response.pointer;
3247
3248 if (obj && obj->type == ACPI_TYPE_INTEGER)
3249 code = (int)(obj->integer.value & WMI_EVENT_MASK);
3250 else
3251 code = -EIO;
3252
3253 kfree(obj);
3254 return code;
3255}
3256
3257static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
3258{
3259 unsigned int key_value = 1;
3260 bool autorelease = 1;
3261 int orig_code = code;
3262
3263 if (asus->driver->key_filter) {
3264 asus->driver->key_filter(asus->driver, &code, &key_value,
3265 &autorelease);
3266 if (code == ASUS_WMI_KEY_IGNORE)
3267 return;
3268 }
3269
3270 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
3271 code = ASUS_WMI_BRN_UP;
3272 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
3273 code = ASUS_WMI_BRN_DOWN;
3274
3275 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
3276 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
3277 asus_wmi_backlight_notify(asus, orig_code);
3278 return;
3279 }
3280 }
3281
3282 if (code == NOTIFY_KBD_BRTUP) {
3283 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
3284 return;
3285 }
3286 if (code == NOTIFY_KBD_BRTDWN) {
3287 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
3288 return;
3289 }
3290 if (code == NOTIFY_KBD_BRTTOGGLE) {
3291 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
3292 kbd_led_set_by_kbd(asus, 0);
3293 else
3294 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
3295 return;
3296 }
3297
3298 if (code == NOTIFY_FNLOCK_TOGGLE) {
3299 asus->fnlock_locked = !asus->fnlock_locked;
3300 asus_wmi_fnlock_update(asus);
3301 return;
3302 }
3303
3304 if (code == asus->tablet_switch_event_code) {
3305 asus_wmi_tablet_mode_get_state(asus);
3306 return;
3307 }
3308
3309 if (code == NOTIFY_KBD_FBM || code == NOTIFY_KBD_TTP) {
3310 if (asus->fan_boost_mode_available)
3311 fan_boost_mode_switch_next(asus);
3312 if (asus->throttle_thermal_policy_available)
3313 throttle_thermal_policy_switch_next(asus);
3314 return;
3315
3316 }
3317
3318 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
3319 return;
3320
3321 if (!sparse_keymap_report_event(asus->inputdev, code,
3322 key_value, autorelease))
3323 pr_info("Unknown key code 0x%x\n", code);
3324}
3325
3326static void asus_wmi_notify(u32 value, void *context)
3327{
3328 struct asus_wmi *asus = context;
3329 int code;
3330 int i;
3331
3332 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
3333 code = asus_wmi_get_event_code(value);
3334 if (code < 0) {
3335 pr_warn("Failed to get notify code: %d\n", code);
3336 return;
3337 }
3338
3339 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
3340 return;
3341
3342 asus_wmi_handle_event_code(code, asus);
3343
3344 /*
3345 * Double check that queue is present:
3346 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
3347 */
3348 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
3349 return;
3350 }
3351
3352 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
3353}
3354
3355static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
3356{
3357 int code;
3358 int i;
3359
3360 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
3361 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
3362 if (code < 0) {
3363 pr_warn("Failed to get event during flush: %d\n", code);
3364 return code;
3365 }
3366
3367 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
3368 return 0;
3369 }
3370
3371 pr_warn("Failed to flush event queue\n");
3372 return -EIO;
3373}
3374
3375/* Sysfs **********************************************************************/
3376
3377static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
3378 const char *buf, size_t count)
3379{
3380 u32 retval;
3381 int err, value;
3382
3383 value = asus_wmi_get_devstate_simple(asus, devid);
3384 if (value < 0)
3385 return value;
3386
3387 err = kstrtoint(buf, 0, &value);
3388 if (err)
3389 return err;
3390
3391 err = asus_wmi_set_devstate(devid, value, &retval);
3392 if (err < 0)
3393 return err;
3394
3395 return count;
3396}
3397
3398static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
3399{
3400 int value = asus_wmi_get_devstate_simple(asus, devid);
3401
3402 if (value < 0)
3403 return value;
3404
3405 return sprintf(buf, "%d\n", value);
3406}
3407
3408#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
3409 static ssize_t show_##_name(struct device *dev, \
3410 struct device_attribute *attr, \
3411 char *buf) \
3412 { \
3413 struct asus_wmi *asus = dev_get_drvdata(dev); \
3414 \
3415 return show_sys_wmi(asus, _cm, buf); \
3416 } \
3417 static ssize_t store_##_name(struct device *dev, \
3418 struct device_attribute *attr, \
3419 const char *buf, size_t count) \
3420 { \
3421 struct asus_wmi *asus = dev_get_drvdata(dev); \
3422 \
3423 return store_sys_wmi(asus, _cm, buf, count); \
3424 } \
3425 static struct device_attribute dev_attr_##_name = { \
3426 .attr = { \
3427 .name = __stringify(_name), \
3428 .mode = _mode }, \
3429 .show = show_##_name, \
3430 .store = store_##_name, \
3431 }
3432
3433ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
3434ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
3435ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
3436ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
3437ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
3438
3439static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
3440 const char *buf, size_t count)
3441{
3442 int value, rv;
3443
3444 rv = kstrtoint(buf, 0, &value);
3445 if (rv)
3446 return rv;
3447
3448 if (value < 0 || value > 2)
3449 return -EINVAL;
3450
3451 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
3452 if (rv < 0)
3453 return rv;
3454
3455 return count;
3456}
3457
3458static DEVICE_ATTR_WO(cpufv);
3459
3460static struct attribute *platform_attributes[] = {
3461 &dev_attr_cpufv.attr,
3462 &dev_attr_camera.attr,
3463 &dev_attr_cardr.attr,
3464 &dev_attr_touchpad.attr,
3465 &dev_attr_egpu_enable.attr,
3466 &dev_attr_dgpu_disable.attr,
3467 &dev_attr_gpu_mux_mode.attr,
3468 &dev_attr_lid_resume.attr,
3469 &dev_attr_als_enable.attr,
3470 &dev_attr_fan_boost_mode.attr,
3471 &dev_attr_throttle_thermal_policy.attr,
3472 &dev_attr_panel_od.attr,
3473 NULL
3474};
3475
3476static umode_t asus_sysfs_is_visible(struct kobject *kobj,
3477 struct attribute *attr, int idx)
3478{
3479 struct device *dev = kobj_to_dev(kobj);
3480 struct asus_wmi *asus = dev_get_drvdata(dev);
3481 bool ok = true;
3482 int devid = -1;
3483
3484 if (attr == &dev_attr_camera.attr)
3485 devid = ASUS_WMI_DEVID_CAMERA;
3486 else if (attr == &dev_attr_cardr.attr)
3487 devid = ASUS_WMI_DEVID_CARDREADER;
3488 else if (attr == &dev_attr_touchpad.attr)
3489 devid = ASUS_WMI_DEVID_TOUCHPAD;
3490 else if (attr == &dev_attr_lid_resume.attr)
3491 devid = ASUS_WMI_DEVID_LID_RESUME;
3492 else if (attr == &dev_attr_als_enable.attr)
3493 devid = ASUS_WMI_DEVID_ALS_ENABLE;
3494 else if (attr == &dev_attr_egpu_enable.attr)
3495 ok = asus->egpu_enable_available;
3496 else if (attr == &dev_attr_dgpu_disable.attr)
3497 ok = asus->dgpu_disable_available;
3498 else if (attr == &dev_attr_gpu_mux_mode.attr)
3499 ok = asus->gpu_mux_mode_available;
3500 else if (attr == &dev_attr_fan_boost_mode.attr)
3501 ok = asus->fan_boost_mode_available;
3502 else if (attr == &dev_attr_throttle_thermal_policy.attr)
3503 ok = asus->throttle_thermal_policy_available;
3504 else if (attr == &dev_attr_panel_od.attr)
3505 ok = asus->panel_overdrive_available;
3506
3507 if (devid != -1)
3508 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
3509
3510 return ok ? attr->mode : 0;
3511}
3512
3513static const struct attribute_group platform_attribute_group = {
3514 .is_visible = asus_sysfs_is_visible,
3515 .attrs = platform_attributes
3516};
3517
3518static void asus_wmi_sysfs_exit(struct platform_device *device)
3519{
3520 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
3521}
3522
3523static int asus_wmi_sysfs_init(struct platform_device *device)
3524{
3525 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
3526}
3527
3528/* Platform device ************************************************************/
3529
3530static int asus_wmi_platform_init(struct asus_wmi *asus)
3531{
3532 struct device *dev = &asus->platform_device->dev;
3533 char *wmi_uid;
3534 int rv;
3535
3536 /* INIT enable hotkeys on some models */
3537 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
3538 pr_info("Initialization: %#x\n", rv);
3539
3540 /* We don't know yet what to do with this version... */
3541 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
3542 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
3543 asus->spec = rv;
3544 }
3545
3546 /*
3547 * The SFUN method probably allows the original driver to get the list
3548 * of features supported by a given model. For now, 0x0100 or 0x0800
3549 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
3550 * The significance of others is yet to be found.
3551 */
3552 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
3553 pr_info("SFUN value: %#x\n", rv);
3554 asus->sfun = rv;
3555 }
3556
3557 /*
3558 * Eee PC and Notebooks seems to have different method_id for DSTS,
3559 * but it may also be related to the BIOS's SPEC.
3560 * Note, on most Eeepc, there is no way to check if a method exist
3561 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
3562 * but once again, SPEC may probably be used for that kind of things.
3563 *
3564 * Additionally at least TUF Gaming series laptops return nothing for
3565 * unknown methods, so the detection in this way is not possible.
3566 *
3567 * There is strong indication that only ACPI WMI devices that have _UID
3568 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
3569 */
3570 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
3571 if (!wmi_uid)
3572 return -ENODEV;
3573
3574 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
3575 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
3576 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
3577 } else {
3578 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
3579 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
3580 }
3581
3582 /*
3583 * Some devices can have multiple event codes stored in a queue before
3584 * the module load if it was unloaded intermittently after calling
3585 * the INIT method (enables event handling). The WMI notify handler is
3586 * expected to retrieve all event codes until a retrieved code equals
3587 * queue end marker (One or Ones). Old codes are flushed from the queue
3588 * upon module load. Not enabling this when it should be has minimal
3589 * visible impact so fall back if anything goes wrong.
3590 */
3591 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
3592 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
3593 dev_info(dev, "Detected ATK, enable event queue\n");
3594
3595 if (!asus_wmi_notify_queue_flush(asus))
3596 asus->wmi_event_queue = true;
3597 }
3598
3599 /* CWAP allow to define the behavior of the Fn+F2 key,
3600 * this method doesn't seems to be present on Eee PCs */
3601 if (asus->driver->quirks->wapf >= 0)
3602 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
3603 asus->driver->quirks->wapf, NULL);
3604
3605 return 0;
3606}
3607
3608/* debugfs ********************************************************************/
3609
3610struct asus_wmi_debugfs_node {
3611 struct asus_wmi *asus;
3612 char *name;
3613 int (*show) (struct seq_file *m, void *data);
3614};
3615
3616static int show_dsts(struct seq_file *m, void *data)
3617{
3618 struct asus_wmi *asus = m->private;
3619 int err;
3620 u32 retval = -1;
3621
3622 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
3623 if (err < 0)
3624 return err;
3625
3626 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
3627
3628 return 0;
3629}
3630
3631static int show_devs(struct seq_file *m, void *data)
3632{
3633 struct asus_wmi *asus = m->private;
3634 int err;
3635 u32 retval = -1;
3636
3637 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
3638 &retval);
3639 if (err < 0)
3640 return err;
3641
3642 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
3643 asus->debug.ctrl_param, retval);
3644
3645 return 0;
3646}
3647
3648static int show_call(struct seq_file *m, void *data)
3649{
3650 struct asus_wmi *asus = m->private;
3651 struct bios_args args = {
3652 .arg0 = asus->debug.dev_id,
3653 .arg1 = asus->debug.ctrl_param,
3654 };
3655 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
3656 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
3657 union acpi_object *obj;
3658 acpi_status status;
3659
3660 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
3661 0, asus->debug.method_id,
3662 &input, &output);
3663
3664 if (ACPI_FAILURE(status))
3665 return -EIO;
3666
3667 obj = (union acpi_object *)output.pointer;
3668 if (obj && obj->type == ACPI_TYPE_INTEGER)
3669 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
3670 asus->debug.dev_id, asus->debug.ctrl_param,
3671 (u32) obj->integer.value);
3672 else
3673 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
3674 asus->debug.dev_id, asus->debug.ctrl_param,
3675 obj ? obj->type : -1);
3676
3677 kfree(obj);
3678
3679 return 0;
3680}
3681
3682static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
3683 {NULL, "devs", show_devs},
3684 {NULL, "dsts", show_dsts},
3685 {NULL, "call", show_call},
3686};
3687
3688static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
3689{
3690 struct asus_wmi_debugfs_node *node = inode->i_private;
3691
3692 return single_open(file, node->show, node->asus);
3693}
3694
3695static const struct file_operations asus_wmi_debugfs_io_ops = {
3696 .owner = THIS_MODULE,
3697 .open = asus_wmi_debugfs_open,
3698 .read = seq_read,
3699 .llseek = seq_lseek,
3700 .release = single_release,
3701};
3702
3703static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
3704{
3705 debugfs_remove_recursive(asus->debug.root);
3706}
3707
3708static void asus_wmi_debugfs_init(struct asus_wmi *asus)
3709{
3710 int i;
3711
3712 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
3713
3714 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
3715 &asus->debug.method_id);
3716
3717 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
3718 &asus->debug.dev_id);
3719
3720 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
3721 &asus->debug.ctrl_param);
3722
3723 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
3724 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
3725
3726 node->asus = asus;
3727 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
3728 asus->debug.root, node,
3729 &asus_wmi_debugfs_io_ops);
3730 }
3731}
3732
3733/* Init / exit ****************************************************************/
3734
3735static int asus_wmi_add(struct platform_device *pdev)
3736{
3737 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
3738 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
3739 struct asus_wmi *asus;
3740 acpi_status status;
3741 int err;
3742 u32 result;
3743
3744 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
3745 if (!asus)
3746 return -ENOMEM;
3747
3748 asus->driver = wdrv;
3749 asus->platform_device = pdev;
3750 wdrv->platform_device = pdev;
3751 platform_set_drvdata(asus->platform_device, asus);
3752
3753 if (wdrv->detect_quirks)
3754 wdrv->detect_quirks(asus->driver);
3755
3756 err = asus_wmi_platform_init(asus);
3757 if (err)
3758 goto fail_platform;
3759
3760 asus->egpu_enable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU);
3761 asus->dgpu_disable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_DGPU);
3762 asus->gpu_mux_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_GPU_MUX);
3763 asus->kbd_rgb_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_MODE);
3764 asus->kbd_rgb_state_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_STATE);
3765 asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
3766
3767 err = fan_boost_mode_check_present(asus);
3768 if (err)
3769 goto fail_fan_boost_mode;
3770
3771 err = throttle_thermal_policy_check_present(asus);
3772 if (err)
3773 goto fail_throttle_thermal_policy;
3774 else
3775 throttle_thermal_policy_set_default(asus);
3776
3777 err = platform_profile_setup(asus);
3778 if (err)
3779 goto fail_platform_profile_setup;
3780
3781 err = asus_wmi_sysfs_init(asus->platform_device);
3782 if (err)
3783 goto fail_sysfs;
3784
3785 err = asus_wmi_input_init(asus);
3786 if (err)
3787 goto fail_input;
3788
3789 err = asus_wmi_fan_init(asus); /* probably no problems on error */
3790
3791 err = asus_wmi_hwmon_init(asus);
3792 if (err)
3793 goto fail_hwmon;
3794
3795 err = asus_wmi_custom_fan_curve_init(asus);
3796 if (err)
3797 goto fail_custom_fan_curve;
3798
3799 err = asus_wmi_led_init(asus);
3800 if (err)
3801 goto fail_leds;
3802
3803 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
3804 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
3805 asus->driver->wlan_ctrl_by_user = 1;
3806
3807 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
3808 err = asus_wmi_rfkill_init(asus);
3809 if (err)
3810 goto fail_rfkill;
3811 }
3812
3813 if (asus->driver->quirks->wmi_force_als_set)
3814 asus_wmi_set_als();
3815
3816 if (asus->driver->quirks->xusb2pr)
3817 asus_wmi_set_xusb2pr(asus);
3818
3819 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
3820 err = asus_wmi_backlight_init(asus);
3821 if (err && err != -ENODEV)
3822 goto fail_backlight;
3823 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
3824 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
3825
3826 if (asus_wmi_has_fnlock_key(asus)) {
3827 asus->fnlock_locked = fnlock_default;
3828 asus_wmi_fnlock_update(asus);
3829 }
3830
3831 status = wmi_install_notify_handler(asus->driver->event_guid,
3832 asus_wmi_notify, asus);
3833 if (ACPI_FAILURE(status)) {
3834 pr_err("Unable to register notify handler - %d\n", status);
3835 err = -ENODEV;
3836 goto fail_wmi_handler;
3837 }
3838
3839 asus_wmi_battery_init(asus);
3840
3841 asus_wmi_debugfs_init(asus);
3842
3843 return 0;
3844
3845fail_wmi_handler:
3846 asus_wmi_backlight_exit(asus);
3847fail_backlight:
3848 asus_wmi_rfkill_exit(asus);
3849fail_rfkill:
3850 asus_wmi_led_exit(asus);
3851fail_leds:
3852fail_hwmon:
3853 asus_wmi_input_exit(asus);
3854fail_input:
3855 asus_wmi_sysfs_exit(asus->platform_device);
3856fail_sysfs:
3857fail_throttle_thermal_policy:
3858fail_custom_fan_curve:
3859fail_platform_profile_setup:
3860 if (asus->platform_profile_support)
3861 platform_profile_remove();
3862fail_fan_boost_mode:
3863fail_platform:
3864 kfree(asus);
3865 return err;
3866}
3867
3868static int asus_wmi_remove(struct platform_device *device)
3869{
3870 struct asus_wmi *asus;
3871
3872 asus = platform_get_drvdata(device);
3873 wmi_remove_notify_handler(asus->driver->event_guid);
3874 asus_wmi_backlight_exit(asus);
3875 asus_wmi_input_exit(asus);
3876 asus_wmi_led_exit(asus);
3877 asus_wmi_rfkill_exit(asus);
3878 asus_wmi_debugfs_exit(asus);
3879 asus_wmi_sysfs_exit(asus->platform_device);
3880 asus_fan_set_auto(asus);
3881 throttle_thermal_policy_set_default(asus);
3882 asus_wmi_battery_exit(asus);
3883
3884 if (asus->platform_profile_support)
3885 platform_profile_remove();
3886
3887 kfree(asus);
3888 return 0;
3889}
3890
3891/* Platform driver - hibernate/resume callbacks *******************************/
3892
3893static int asus_hotk_thaw(struct device *device)
3894{
3895 struct asus_wmi *asus = dev_get_drvdata(device);
3896
3897 if (asus->wlan.rfkill) {
3898 bool wlan;
3899
3900 /*
3901 * Work around bios bug - acpi _PTS turns off the wireless led
3902 * during suspend. Normally it restores it on resume, but
3903 * we should kick it ourselves in case hibernation is aborted.
3904 */
3905 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
3906 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
3907 }
3908
3909 return 0;
3910}
3911
3912static int asus_hotk_resume(struct device *device)
3913{
3914 struct asus_wmi *asus = dev_get_drvdata(device);
3915
3916 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
3917 kbd_led_update(asus);
3918
3919 if (asus_wmi_has_fnlock_key(asus))
3920 asus_wmi_fnlock_update(asus);
3921
3922 asus_wmi_tablet_mode_get_state(asus);
3923 return 0;
3924}
3925
3926static int asus_hotk_restore(struct device *device)
3927{
3928 struct asus_wmi *asus = dev_get_drvdata(device);
3929 int bl;
3930
3931 /* Refresh both wlan rfkill state and pci hotplug */
3932 if (asus->wlan.rfkill)
3933 asus_rfkill_hotplug(asus);
3934
3935 if (asus->bluetooth.rfkill) {
3936 bl = !asus_wmi_get_devstate_simple(asus,
3937 ASUS_WMI_DEVID_BLUETOOTH);
3938 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
3939 }
3940 if (asus->wimax.rfkill) {
3941 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
3942 rfkill_set_sw_state(asus->wimax.rfkill, bl);
3943 }
3944 if (asus->wwan3g.rfkill) {
3945 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
3946 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
3947 }
3948 if (asus->gps.rfkill) {
3949 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
3950 rfkill_set_sw_state(asus->gps.rfkill, bl);
3951 }
3952 if (asus->uwb.rfkill) {
3953 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
3954 rfkill_set_sw_state(asus->uwb.rfkill, bl);
3955 }
3956 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
3957 kbd_led_update(asus);
3958
3959 if (asus_wmi_has_fnlock_key(asus))
3960 asus_wmi_fnlock_update(asus);
3961
3962 asus_wmi_tablet_mode_get_state(asus);
3963 return 0;
3964}
3965
3966static const struct dev_pm_ops asus_pm_ops = {
3967 .thaw = asus_hotk_thaw,
3968 .restore = asus_hotk_restore,
3969 .resume = asus_hotk_resume,
3970};
3971
3972/* Registration ***************************************************************/
3973
3974static int asus_wmi_probe(struct platform_device *pdev)
3975{
3976 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
3977 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
3978 int ret;
3979
3980 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
3981 pr_warn("ASUS Management GUID not found\n");
3982 return -ENODEV;
3983 }
3984
3985 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
3986 pr_warn("ASUS Event GUID not found\n");
3987 return -ENODEV;
3988 }
3989
3990 if (wdrv->probe) {
3991 ret = wdrv->probe(pdev);
3992 if (ret)
3993 return ret;
3994 }
3995
3996 return asus_wmi_add(pdev);
3997}
3998
3999static bool used;
4000
4001int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
4002{
4003 struct platform_driver *platform_driver;
4004 struct platform_device *platform_device;
4005
4006 if (used)
4007 return -EBUSY;
4008
4009 platform_driver = &driver->platform_driver;
4010 platform_driver->remove = asus_wmi_remove;
4011 platform_driver->driver.owner = driver->owner;
4012 platform_driver->driver.name = driver->name;
4013 platform_driver->driver.pm = &asus_pm_ops;
4014
4015 platform_device = platform_create_bundle(platform_driver,
4016 asus_wmi_probe,
4017 NULL, 0, NULL, 0);
4018 if (IS_ERR(platform_device))
4019 return PTR_ERR(platform_device);
4020
4021 used = true;
4022 return 0;
4023}
4024EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
4025
4026void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
4027{
4028 platform_device_unregister(driver->platform_device);
4029 platform_driver_unregister(&driver->platform_driver);
4030 used = false;
4031}
4032EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
4033
4034static int __init asus_wmi_init(void)
4035{
4036 pr_info("ASUS WMI generic driver loaded\n");
4037 return 0;
4038}
4039
4040static void __exit asus_wmi_exit(void)
4041{
4042 pr_info("ASUS WMI generic driver unloaded\n");
4043}
4044
4045module_init(asus_wmi_init);
4046module_exit(asus_wmi_exit);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Asus PC WMI hotkey driver
4 *
5 * Copyright(C) 2010 Intel Corporation.
6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
7 *
8 * Portions based on wistron_btns.c:
9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12 */
13
14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/types.h>
20#include <linux/slab.h>
21#include <linux/input.h>
22#include <linux/input/sparse-keymap.h>
23#include <linux/fb.h>
24#include <linux/backlight.h>
25#include <linux/leds.h>
26#include <linux/rfkill.h>
27#include <linux/pci.h>
28#include <linux/pci_hotplug.h>
29#include <linux/power_supply.h>
30#include <linux/hwmon.h>
31#include <linux/hwmon-sysfs.h>
32#include <linux/debugfs.h>
33#include <linux/seq_file.h>
34#include <linux/platform_data/x86/asus-wmi.h>
35#include <linux/platform_device.h>
36#include <linux/thermal.h>
37#include <linux/acpi.h>
38#include <linux/dmi.h>
39
40#include <acpi/battery.h>
41#include <acpi/video.h>
42
43#include "asus-wmi.h"
44
45MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
46 "Yong Wang <yong.y.wang@intel.com>");
47MODULE_DESCRIPTION("Asus Generic WMI Driver");
48MODULE_LICENSE("GPL");
49
50#define to_asus_wmi_driver(pdrv) \
51 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
52
53#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
54
55#define NOTIFY_BRNUP_MIN 0x11
56#define NOTIFY_BRNUP_MAX 0x1f
57#define NOTIFY_BRNDOWN_MIN 0x20
58#define NOTIFY_BRNDOWN_MAX 0x2e
59#define NOTIFY_FNLOCK_TOGGLE 0x4e
60#define NOTIFY_KBD_BRTUP 0xc4
61#define NOTIFY_KBD_BRTDWN 0xc5
62#define NOTIFY_KBD_BRTTOGGLE 0xc7
63#define NOTIFY_KBD_FBM 0x99
64
65#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
66
67#define ASUS_FAN_DESC "cpu_fan"
68#define ASUS_FAN_MFUN 0x13
69#define ASUS_FAN_SFUN_READ 0x06
70#define ASUS_FAN_SFUN_WRITE 0x07
71
72/* Based on standard hwmon pwmX_enable values */
73#define ASUS_FAN_CTRL_FULLSPEED 0
74#define ASUS_FAN_CTRL_MANUAL 1
75#define ASUS_FAN_CTRL_AUTO 2
76
77#define ASUS_FAN_BOOST_MODE_NORMAL 0
78#define ASUS_FAN_BOOST_MODE_OVERBOOST 1
79#define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
80#define ASUS_FAN_BOOST_MODE_SILENT 2
81#define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
82#define ASUS_FAN_BOOST_MODES_MASK 0x03
83
84#define USB_INTEL_XUSB2PR 0xD0
85#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
86
87#define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
88#define ASUS_ACPI_UID_ATK "ATK"
89
90#define WMI_EVENT_QUEUE_SIZE 0x10
91#define WMI_EVENT_QUEUE_END 0x1
92#define WMI_EVENT_MASK 0xFFFF
93/* The WMI hotkey event value is always the same. */
94#define WMI_EVENT_VALUE_ATK 0xFF
95
96#define WMI_EVENT_MASK 0xFFFF
97
98static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
99
100static bool ashs_present(void)
101{
102 int i = 0;
103 while (ashs_ids[i]) {
104 if (acpi_dev_found(ashs_ids[i++]))
105 return true;
106 }
107 return false;
108}
109
110struct bios_args {
111 u32 arg0;
112 u32 arg1;
113 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
114} __packed;
115
116/*
117 * Struct that's used for all methods called via AGFN. Naming is
118 * identically to the AML code.
119 */
120struct agfn_args {
121 u16 mfun; /* probably "Multi-function" to be called */
122 u16 sfun; /* probably "Sub-function" to be called */
123 u16 len; /* size of the hole struct, including subfunction fields */
124 u8 stas; /* not used by now */
125 u8 err; /* zero on success */
126} __packed;
127
128/* struct used for calling fan read and write methods */
129struct agfn_fan_args {
130 struct agfn_args agfn; /* common fields */
131 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
132 u32 speed; /* read: RPM/100 - write: 0-255 */
133} __packed;
134
135/*
136 * <platform>/ - debugfs root directory
137 * dev_id - current dev_id
138 * ctrl_param - current ctrl_param
139 * method_id - current method_id
140 * devs - call DEVS(dev_id, ctrl_param) and print result
141 * dsts - call DSTS(dev_id) and print result
142 * call - call method_id(dev_id, ctrl_param) and print result
143 */
144struct asus_wmi_debug {
145 struct dentry *root;
146 u32 method_id;
147 u32 dev_id;
148 u32 ctrl_param;
149};
150
151struct asus_rfkill {
152 struct asus_wmi *asus;
153 struct rfkill *rfkill;
154 u32 dev_id;
155};
156
157enum fan_type {
158 FAN_TYPE_NONE = 0,
159 FAN_TYPE_AGFN, /* deprecated on newer platforms */
160 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
161};
162
163struct asus_wmi {
164 int dsts_id;
165 int spec;
166 int sfun;
167 bool wmi_event_queue;
168
169 struct input_dev *inputdev;
170 struct backlight_device *backlight_device;
171 struct platform_device *platform_device;
172
173 struct led_classdev wlan_led;
174 int wlan_led_wk;
175 struct led_classdev tpd_led;
176 int tpd_led_wk;
177 struct led_classdev kbd_led;
178 int kbd_led_wk;
179 struct led_classdev lightbar_led;
180 int lightbar_led_wk;
181 struct workqueue_struct *led_workqueue;
182 struct work_struct tpd_led_work;
183 struct work_struct wlan_led_work;
184 struct work_struct lightbar_led_work;
185
186 struct asus_rfkill wlan;
187 struct asus_rfkill bluetooth;
188 struct asus_rfkill wimax;
189 struct asus_rfkill wwan3g;
190 struct asus_rfkill gps;
191 struct asus_rfkill uwb;
192
193 enum fan_type fan_type;
194 int fan_pwm_mode;
195 int agfn_pwm;
196
197 bool fan_boost_mode_available;
198 u8 fan_boost_mode_mask;
199 u8 fan_boost_mode;
200
201 // The RSOC controls the maximum charging percentage.
202 bool battery_rsoc_available;
203
204 struct hotplug_slot hotplug_slot;
205 struct mutex hotplug_lock;
206 struct mutex wmi_lock;
207 struct workqueue_struct *hotplug_workqueue;
208 struct work_struct hotplug_work;
209
210 bool fnlock_locked;
211
212 struct asus_wmi_debug debug;
213
214 struct asus_wmi_driver *driver;
215};
216
217/* Input **********************************************************************/
218
219static 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_dev;
240
241 return 0;
242
243err_free_dev:
244 input_free_device(asus->inputdev);
245 return err;
246}
247
248static void asus_wmi_input_exit(struct asus_wmi *asus)
249{
250 if (asus->inputdev)
251 input_unregister_device(asus->inputdev);
252
253 asus->inputdev = NULL;
254}
255
256/* WMI ************************************************************************/
257
258static int asus_wmi_evaluate_method3(u32 method_id,
259 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
260{
261 struct bios_args args = {
262 .arg0 = arg0,
263 .arg1 = arg1,
264 .arg2 = arg2,
265 };
266 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
267 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
268 acpi_status status;
269 union acpi_object *obj;
270 u32 tmp = 0;
271
272 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
273 &input, &output);
274
275 if (ACPI_FAILURE(status))
276 return -EIO;
277
278 obj = (union acpi_object *)output.pointer;
279 if (obj && obj->type == ACPI_TYPE_INTEGER)
280 tmp = (u32) obj->integer.value;
281
282 if (retval)
283 *retval = tmp;
284
285 kfree(obj);
286
287 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
288 return -ENODEV;
289
290 return 0;
291}
292
293int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
294{
295 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
296}
297EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
298
299static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
300{
301 struct acpi_buffer input;
302 u64 phys_addr;
303 u32 retval;
304 u32 status = -1;
305
306 /*
307 * Copy to dma capable address otherwise memory corruption occurs as
308 * bios has to be able to access it.
309 */
310 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
311 input.length = args.length;
312 if (!input.pointer)
313 return -ENOMEM;
314 phys_addr = virt_to_phys(input.pointer);
315
316 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
317 phys_addr, 0, &retval);
318 if (!status)
319 memcpy(args.pointer, input.pointer, args.length);
320
321 kfree(input.pointer);
322 if (status)
323 return -ENXIO;
324
325 return retval;
326}
327
328static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
329{
330 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
331}
332
333static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
334 u32 *retval)
335{
336 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
337 ctrl_param, retval);
338}
339
340/* Helper for special devices with magic return codes */
341static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
342 u32 dev_id, u32 mask)
343{
344 u32 retval = 0;
345 int err;
346
347 err = asus_wmi_get_devstate(asus, dev_id, &retval);
348 if (err < 0)
349 return err;
350
351 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
352 return -ENODEV;
353
354 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
355 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
356 return -ENODEV;
357 }
358
359 return retval & mask;
360}
361
362static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
363{
364 return asus_wmi_get_devstate_bits(asus, dev_id,
365 ASUS_WMI_DSTS_STATUS_BIT);
366}
367
368static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
369{
370 u32 retval;
371 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
372
373 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
374}
375
376/* Battery ********************************************************************/
377
378/* The battery maximum charging percentage */
379static int charge_end_threshold;
380
381static ssize_t charge_control_end_threshold_store(struct device *dev,
382 struct device_attribute *attr,
383 const char *buf, size_t count)
384{
385 int value, ret, rv;
386
387 ret = kstrtouint(buf, 10, &value);
388 if (ret)
389 return ret;
390
391 if (value < 0 || value > 100)
392 return -EINVAL;
393
394 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
395 if (ret)
396 return ret;
397
398 if (rv != 1)
399 return -EIO;
400
401 /* There isn't any method in the DSDT to read the threshold, so we
402 * save the threshold.
403 */
404 charge_end_threshold = value;
405 return count;
406}
407
408static ssize_t charge_control_end_threshold_show(struct device *device,
409 struct device_attribute *attr,
410 char *buf)
411{
412 return sprintf(buf, "%d\n", charge_end_threshold);
413}
414
415static DEVICE_ATTR_RW(charge_control_end_threshold);
416
417static int asus_wmi_battery_add(struct power_supply *battery)
418{
419 /* The WMI method does not provide a way to specific a battery, so we
420 * just assume it is the first battery.
421 */
422 if (strcmp(battery->desc->name, "BAT0") != 0)
423 return -ENODEV;
424
425 if (device_create_file(&battery->dev,
426 &dev_attr_charge_control_end_threshold))
427 return -ENODEV;
428
429 /* The charge threshold is only reset when the system is power cycled,
430 * and we can't get the current threshold so let set it to 100% when
431 * a battery is added.
432 */
433 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
434 charge_end_threshold = 100;
435
436 return 0;
437}
438
439static int asus_wmi_battery_remove(struct power_supply *battery)
440{
441 device_remove_file(&battery->dev,
442 &dev_attr_charge_control_end_threshold);
443 return 0;
444}
445
446static struct acpi_battery_hook battery_hook = {
447 .add_battery = asus_wmi_battery_add,
448 .remove_battery = asus_wmi_battery_remove,
449 .name = "ASUS Battery Extension",
450};
451
452static void asus_wmi_battery_init(struct asus_wmi *asus)
453{
454 asus->battery_rsoc_available = false;
455 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
456 asus->battery_rsoc_available = true;
457 battery_hook_register(&battery_hook);
458 }
459}
460
461static void asus_wmi_battery_exit(struct asus_wmi *asus)
462{
463 if (asus->battery_rsoc_available)
464 battery_hook_unregister(&battery_hook);
465}
466
467/* LEDs ***********************************************************************/
468
469/*
470 * These functions actually update the LED's, and are called from a
471 * workqueue. By doing this as separate work rather than when the LED
472 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
473 * potentially bad time, such as a timer interrupt.
474 */
475static void tpd_led_update(struct work_struct *work)
476{
477 int ctrl_param;
478 struct asus_wmi *asus;
479
480 asus = container_of(work, struct asus_wmi, tpd_led_work);
481
482 ctrl_param = asus->tpd_led_wk;
483 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
484}
485
486static void tpd_led_set(struct led_classdev *led_cdev,
487 enum led_brightness value)
488{
489 struct asus_wmi *asus;
490
491 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
492
493 asus->tpd_led_wk = !!value;
494 queue_work(asus->led_workqueue, &asus->tpd_led_work);
495}
496
497static int read_tpd_led_state(struct asus_wmi *asus)
498{
499 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
500}
501
502static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
503{
504 struct asus_wmi *asus;
505
506 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
507
508 return read_tpd_led_state(asus);
509}
510
511static void kbd_led_update(struct asus_wmi *asus)
512{
513 int ctrl_param = 0;
514
515 /*
516 * bits 0-2: level
517 * bit 7: light on/off
518 */
519 if (asus->kbd_led_wk > 0)
520 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
521
522 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
523}
524
525static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
526{
527 int retval;
528
529 /*
530 * bits 0-2: level
531 * bit 7: light on/off
532 * bit 8-10: environment (0: dark, 1: normal, 2: light)
533 * bit 17: status unknown
534 */
535 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
536 0xFFFF);
537
538 /* Unknown status is considered as off */
539 if (retval == 0x8000)
540 retval = 0;
541
542 if (retval < 0)
543 return retval;
544
545 if (level)
546 *level = retval & 0x7F;
547 if (env)
548 *env = (retval >> 8) & 0x7F;
549 return 0;
550}
551
552static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
553{
554 struct asus_wmi *asus;
555 int max_level;
556
557 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
558 max_level = asus->kbd_led.max_brightness;
559
560 asus->kbd_led_wk = clamp_val(value, 0, max_level);
561 kbd_led_update(asus);
562}
563
564static void kbd_led_set(struct led_classdev *led_cdev,
565 enum led_brightness value)
566{
567 /* Prevent disabling keyboard backlight on module unregister */
568 if (led_cdev->flags & LED_UNREGISTERING)
569 return;
570
571 do_kbd_led_set(led_cdev, value);
572}
573
574static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
575{
576 struct led_classdev *led_cdev = &asus->kbd_led;
577
578 do_kbd_led_set(led_cdev, value);
579 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
580}
581
582static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
583{
584 struct asus_wmi *asus;
585 int retval, value;
586
587 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
588
589 retval = kbd_led_read(asus, &value, NULL);
590 if (retval < 0)
591 return retval;
592
593 return value;
594}
595
596static int wlan_led_unknown_state(struct asus_wmi *asus)
597{
598 u32 result;
599
600 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
601
602 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
603}
604
605static void wlan_led_update(struct work_struct *work)
606{
607 int ctrl_param;
608 struct asus_wmi *asus;
609
610 asus = container_of(work, struct asus_wmi, wlan_led_work);
611
612 ctrl_param = asus->wlan_led_wk;
613 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
614}
615
616static void wlan_led_set(struct led_classdev *led_cdev,
617 enum led_brightness value)
618{
619 struct asus_wmi *asus;
620
621 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
622
623 asus->wlan_led_wk = !!value;
624 queue_work(asus->led_workqueue, &asus->wlan_led_work);
625}
626
627static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
628{
629 struct asus_wmi *asus;
630 u32 result;
631
632 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
633 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
634
635 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
636}
637
638static void lightbar_led_update(struct work_struct *work)
639{
640 struct asus_wmi *asus;
641 int ctrl_param;
642
643 asus = container_of(work, struct asus_wmi, lightbar_led_work);
644
645 ctrl_param = asus->lightbar_led_wk;
646 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
647}
648
649static void lightbar_led_set(struct led_classdev *led_cdev,
650 enum led_brightness value)
651{
652 struct asus_wmi *asus;
653
654 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
655
656 asus->lightbar_led_wk = !!value;
657 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
658}
659
660static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
661{
662 struct asus_wmi *asus;
663 u32 result;
664
665 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
666 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
667
668 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
669}
670
671static void asus_wmi_led_exit(struct asus_wmi *asus)
672{
673 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
674 led_classdev_unregister(&asus->kbd_led);
675 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
676 led_classdev_unregister(&asus->tpd_led);
677 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
678 led_classdev_unregister(&asus->wlan_led);
679 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
680 led_classdev_unregister(&asus->lightbar_led);
681 if (asus->led_workqueue)
682 destroy_workqueue(asus->led_workqueue);
683}
684
685static int asus_wmi_led_init(struct asus_wmi *asus)
686{
687 int rv = 0, led_val;
688
689 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
690 if (!asus->led_workqueue)
691 return -ENOMEM;
692
693 if (read_tpd_led_state(asus) >= 0) {
694 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
695
696 asus->tpd_led.name = "asus::touchpad";
697 asus->tpd_led.brightness_set = tpd_led_set;
698 asus->tpd_led.brightness_get = tpd_led_get;
699 asus->tpd_led.max_brightness = 1;
700
701 rv = led_classdev_register(&asus->platform_device->dev,
702 &asus->tpd_led);
703 if (rv)
704 goto error;
705 }
706
707 if (!kbd_led_read(asus, &led_val, NULL)) {
708 asus->kbd_led_wk = led_val;
709 asus->kbd_led.name = "asus::kbd_backlight";
710 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
711 asus->kbd_led.brightness_set = kbd_led_set;
712 asus->kbd_led.brightness_get = kbd_led_get;
713 asus->kbd_led.max_brightness = 3;
714
715 rv = led_classdev_register(&asus->platform_device->dev,
716 &asus->kbd_led);
717 if (rv)
718 goto error;
719 }
720
721 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
722 && (asus->driver->quirks->wapf > 0)) {
723 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
724
725 asus->wlan_led.name = "asus::wlan";
726 asus->wlan_led.brightness_set = wlan_led_set;
727 if (!wlan_led_unknown_state(asus))
728 asus->wlan_led.brightness_get = wlan_led_get;
729 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
730 asus->wlan_led.max_brightness = 1;
731 asus->wlan_led.default_trigger = "asus-wlan";
732
733 rv = led_classdev_register(&asus->platform_device->dev,
734 &asus->wlan_led);
735 if (rv)
736 goto error;
737 }
738
739 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
740 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
741
742 asus->lightbar_led.name = "asus::lightbar";
743 asus->lightbar_led.brightness_set = lightbar_led_set;
744 asus->lightbar_led.brightness_get = lightbar_led_get;
745 asus->lightbar_led.max_brightness = 1;
746
747 rv = led_classdev_register(&asus->platform_device->dev,
748 &asus->lightbar_led);
749 }
750
751error:
752 if (rv)
753 asus_wmi_led_exit(asus);
754
755 return rv;
756}
757
758/* RF *************************************************************************/
759
760/*
761 * PCI hotplug (for wlan rfkill)
762 */
763static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
764{
765 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
766
767 if (result < 0)
768 return false;
769 return !result;
770}
771
772static void asus_rfkill_hotplug(struct asus_wmi *asus)
773{
774 struct pci_dev *dev;
775 struct pci_bus *bus;
776 bool blocked;
777 bool absent;
778 u32 l;
779
780 mutex_lock(&asus->wmi_lock);
781 blocked = asus_wlan_rfkill_blocked(asus);
782 mutex_unlock(&asus->wmi_lock);
783
784 mutex_lock(&asus->hotplug_lock);
785 pci_lock_rescan_remove();
786
787 if (asus->wlan.rfkill)
788 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
789
790 if (asus->hotplug_slot.ops) {
791 bus = pci_find_bus(0, 1);
792 if (!bus) {
793 pr_warn("Unable to find PCI bus 1?\n");
794 goto out_unlock;
795 }
796
797 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
798 pr_err("Unable to read PCI config space?\n");
799 goto out_unlock;
800 }
801 absent = (l == 0xffffffff);
802
803 if (blocked != absent) {
804 pr_warn("BIOS says wireless lan is %s, "
805 "but the pci device is %s\n",
806 blocked ? "blocked" : "unblocked",
807 absent ? "absent" : "present");
808 pr_warn("skipped wireless hotplug as probably "
809 "inappropriate for this model\n");
810 goto out_unlock;
811 }
812
813 if (!blocked) {
814 dev = pci_get_slot(bus, 0);
815 if (dev) {
816 /* Device already present */
817 pci_dev_put(dev);
818 goto out_unlock;
819 }
820 dev = pci_scan_single_device(bus, 0);
821 if (dev) {
822 pci_bus_assign_resources(bus);
823 pci_bus_add_device(dev);
824 }
825 } else {
826 dev = pci_get_slot(bus, 0);
827 if (dev) {
828 pci_stop_and_remove_bus_device(dev);
829 pci_dev_put(dev);
830 }
831 }
832 }
833
834out_unlock:
835 pci_unlock_rescan_remove();
836 mutex_unlock(&asus->hotplug_lock);
837}
838
839static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
840{
841 struct asus_wmi *asus = data;
842
843 if (event != ACPI_NOTIFY_BUS_CHECK)
844 return;
845
846 /*
847 * We can't call directly asus_rfkill_hotplug because most
848 * of the time WMBC is still being executed and not reetrant.
849 * There is currently no way to tell ACPICA that we want this
850 * method to be serialized, we schedule a asus_rfkill_hotplug
851 * call later, in a safer context.
852 */
853 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
854}
855
856static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
857{
858 acpi_status status;
859 acpi_handle handle;
860
861 status = acpi_get_handle(NULL, node, &handle);
862 if (ACPI_FAILURE(status))
863 return -ENODEV;
864
865 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
866 asus_rfkill_notify, asus);
867 if (ACPI_FAILURE(status))
868 pr_warn("Failed to register notify on %s\n", node);
869
870 return 0;
871}
872
873static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
874{
875 acpi_status status = AE_OK;
876 acpi_handle handle;
877
878 status = acpi_get_handle(NULL, node, &handle);
879 if (ACPI_FAILURE(status))
880 return;
881
882 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
883 asus_rfkill_notify);
884 if (ACPI_FAILURE(status))
885 pr_err("Error removing rfkill notify handler %s\n", node);
886}
887
888static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
889 u8 *value)
890{
891 struct asus_wmi *asus = container_of(hotplug_slot,
892 struct asus_wmi, hotplug_slot);
893 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
894
895 if (result < 0)
896 return result;
897
898 *value = !!result;
899 return 0;
900}
901
902static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
903 .get_adapter_status = asus_get_adapter_status,
904 .get_power_status = asus_get_adapter_status,
905};
906
907static void asus_hotplug_work(struct work_struct *work)
908{
909 struct asus_wmi *asus;
910
911 asus = container_of(work, struct asus_wmi, hotplug_work);
912 asus_rfkill_hotplug(asus);
913}
914
915static int asus_setup_pci_hotplug(struct asus_wmi *asus)
916{
917 int ret = -ENOMEM;
918 struct pci_bus *bus = pci_find_bus(0, 1);
919
920 if (!bus) {
921 pr_err("Unable to find wifi PCI bus\n");
922 return -ENODEV;
923 }
924
925 asus->hotplug_workqueue =
926 create_singlethread_workqueue("hotplug_workqueue");
927 if (!asus->hotplug_workqueue)
928 goto error_workqueue;
929
930 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
931
932 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
933
934 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
935 if (ret) {
936 pr_err("Unable to register hotplug slot - %d\n", ret);
937 goto error_register;
938 }
939
940 return 0;
941
942error_register:
943 asus->hotplug_slot.ops = NULL;
944 destroy_workqueue(asus->hotplug_workqueue);
945error_workqueue:
946 return ret;
947}
948
949/*
950 * Rfkill devices
951 */
952static int asus_rfkill_set(void *data, bool blocked)
953{
954 struct asus_rfkill *priv = data;
955 u32 ctrl_param = !blocked;
956 u32 dev_id = priv->dev_id;
957
958 /*
959 * If the user bit is set, BIOS can't set and record the wlan status,
960 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
961 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
962 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
963 * while setting the wlan status through WMI.
964 * This is also the behavior that windows app will do.
965 */
966 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
967 priv->asus->driver->wlan_ctrl_by_user)
968 dev_id = ASUS_WMI_DEVID_WLAN_LED;
969
970 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
971}
972
973static void asus_rfkill_query(struct rfkill *rfkill, void *data)
974{
975 struct asus_rfkill *priv = data;
976 int result;
977
978 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
979
980 if (result < 0)
981 return;
982
983 rfkill_set_sw_state(priv->rfkill, !result);
984}
985
986static int asus_rfkill_wlan_set(void *data, bool blocked)
987{
988 struct asus_rfkill *priv = data;
989 struct asus_wmi *asus = priv->asus;
990 int ret;
991
992 /*
993 * This handler is enabled only if hotplug is enabled.
994 * In this case, the asus_wmi_set_devstate() will
995 * trigger a wmi notification and we need to wait
996 * this call to finish before being able to call
997 * any wmi method
998 */
999 mutex_lock(&asus->wmi_lock);
1000 ret = asus_rfkill_set(data, blocked);
1001 mutex_unlock(&asus->wmi_lock);
1002 return ret;
1003}
1004
1005static const struct rfkill_ops asus_rfkill_wlan_ops = {
1006 .set_block = asus_rfkill_wlan_set,
1007 .query = asus_rfkill_query,
1008};
1009
1010static const struct rfkill_ops asus_rfkill_ops = {
1011 .set_block = asus_rfkill_set,
1012 .query = asus_rfkill_query,
1013};
1014
1015static int asus_new_rfkill(struct asus_wmi *asus,
1016 struct asus_rfkill *arfkill,
1017 const char *name, enum rfkill_type type, int dev_id)
1018{
1019 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1020 struct rfkill **rfkill = &arfkill->rfkill;
1021
1022 if (result < 0)
1023 return result;
1024
1025 arfkill->dev_id = dev_id;
1026 arfkill->asus = asus;
1027
1028 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1029 asus->driver->quirks->hotplug_wireless)
1030 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1031 &asus_rfkill_wlan_ops, arfkill);
1032 else
1033 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1034 &asus_rfkill_ops, arfkill);
1035
1036 if (!*rfkill)
1037 return -EINVAL;
1038
1039 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1040 (asus->driver->quirks->wapf > 0))
1041 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1042
1043 rfkill_init_sw_state(*rfkill, !result);
1044 result = rfkill_register(*rfkill);
1045 if (result) {
1046 rfkill_destroy(*rfkill);
1047 *rfkill = NULL;
1048 return result;
1049 }
1050 return 0;
1051}
1052
1053static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1054{
1055 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1056 return;
1057
1058 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1059 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1060 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1061 if (asus->wlan.rfkill) {
1062 rfkill_unregister(asus->wlan.rfkill);
1063 rfkill_destroy(asus->wlan.rfkill);
1064 asus->wlan.rfkill = NULL;
1065 }
1066 /*
1067 * Refresh pci hotplug in case the rfkill state was changed after
1068 * asus_unregister_rfkill_notifier()
1069 */
1070 asus_rfkill_hotplug(asus);
1071 if (asus->hotplug_slot.ops)
1072 pci_hp_deregister(&asus->hotplug_slot);
1073 if (asus->hotplug_workqueue)
1074 destroy_workqueue(asus->hotplug_workqueue);
1075
1076 if (asus->bluetooth.rfkill) {
1077 rfkill_unregister(asus->bluetooth.rfkill);
1078 rfkill_destroy(asus->bluetooth.rfkill);
1079 asus->bluetooth.rfkill = NULL;
1080 }
1081 if (asus->wimax.rfkill) {
1082 rfkill_unregister(asus->wimax.rfkill);
1083 rfkill_destroy(asus->wimax.rfkill);
1084 asus->wimax.rfkill = NULL;
1085 }
1086 if (asus->wwan3g.rfkill) {
1087 rfkill_unregister(asus->wwan3g.rfkill);
1088 rfkill_destroy(asus->wwan3g.rfkill);
1089 asus->wwan3g.rfkill = NULL;
1090 }
1091 if (asus->gps.rfkill) {
1092 rfkill_unregister(asus->gps.rfkill);
1093 rfkill_destroy(asus->gps.rfkill);
1094 asus->gps.rfkill = NULL;
1095 }
1096 if (asus->uwb.rfkill) {
1097 rfkill_unregister(asus->uwb.rfkill);
1098 rfkill_destroy(asus->uwb.rfkill);
1099 asus->uwb.rfkill = NULL;
1100 }
1101}
1102
1103static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1104{
1105 int result = 0;
1106
1107 mutex_init(&asus->hotplug_lock);
1108 mutex_init(&asus->wmi_lock);
1109
1110 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1111 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1112
1113 if (result && result != -ENODEV)
1114 goto exit;
1115
1116 result = asus_new_rfkill(asus, &asus->bluetooth,
1117 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1118 ASUS_WMI_DEVID_BLUETOOTH);
1119
1120 if (result && result != -ENODEV)
1121 goto exit;
1122
1123 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1124 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1125
1126 if (result && result != -ENODEV)
1127 goto exit;
1128
1129 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1130 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1131
1132 if (result && result != -ENODEV)
1133 goto exit;
1134
1135 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1136 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1137
1138 if (result && result != -ENODEV)
1139 goto exit;
1140
1141 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1142 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1143
1144 if (result && result != -ENODEV)
1145 goto exit;
1146
1147 if (!asus->driver->quirks->hotplug_wireless)
1148 goto exit;
1149
1150 result = asus_setup_pci_hotplug(asus);
1151 /*
1152 * If we get -EBUSY then something else is handling the PCI hotplug -
1153 * don't fail in this case
1154 */
1155 if (result == -EBUSY)
1156 result = 0;
1157
1158 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1159 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1160 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1161 /*
1162 * Refresh pci hotplug in case the rfkill state was changed during
1163 * setup.
1164 */
1165 asus_rfkill_hotplug(asus);
1166
1167exit:
1168 if (result && result != -ENODEV)
1169 asus_wmi_rfkill_exit(asus);
1170
1171 if (result == -ENODEV)
1172 result = 0;
1173
1174 return result;
1175}
1176
1177/* Quirks *********************************************************************/
1178
1179static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1180{
1181 struct pci_dev *xhci_pdev;
1182 u32 orig_ports_available;
1183 u32 ports_available = asus->driver->quirks->xusb2pr;
1184
1185 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1186 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1187 NULL);
1188
1189 if (!xhci_pdev)
1190 return;
1191
1192 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1193 &orig_ports_available);
1194
1195 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1196 cpu_to_le32(ports_available));
1197
1198 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1199 orig_ports_available, ports_available);
1200}
1201
1202/*
1203 * Some devices dont support or have borcken get_als method
1204 * but still support set method.
1205 */
1206static void asus_wmi_set_als(void)
1207{
1208 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1209}
1210
1211/* Hwmon device ***************************************************************/
1212
1213static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1214 int *speed)
1215{
1216 struct agfn_fan_args args = {
1217 .agfn.len = sizeof(args),
1218 .agfn.mfun = ASUS_FAN_MFUN,
1219 .agfn.sfun = ASUS_FAN_SFUN_READ,
1220 .fan = fan,
1221 .speed = 0,
1222 };
1223 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1224 int status;
1225
1226 if (fan != 1)
1227 return -EINVAL;
1228
1229 status = asus_wmi_evaluate_method_agfn(input);
1230
1231 if (status || args.agfn.err)
1232 return -ENXIO;
1233
1234 if (speed)
1235 *speed = args.speed;
1236
1237 return 0;
1238}
1239
1240static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1241 int *speed)
1242{
1243 struct agfn_fan_args args = {
1244 .agfn.len = sizeof(args),
1245 .agfn.mfun = ASUS_FAN_MFUN,
1246 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1247 .fan = fan,
1248 .speed = speed ? *speed : 0,
1249 };
1250 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1251 int status;
1252
1253 /* 1: for setting 1st fan's speed 0: setting auto mode */
1254 if (fan != 1 && fan != 0)
1255 return -EINVAL;
1256
1257 status = asus_wmi_evaluate_method_agfn(input);
1258
1259 if (status || args.agfn.err)
1260 return -ENXIO;
1261
1262 if (speed && fan == 1)
1263 asus->agfn_pwm = *speed;
1264
1265 return 0;
1266}
1267
1268/*
1269 * Check if we can read the speed of one fan. If true we assume we can also
1270 * control it.
1271 */
1272static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1273{
1274 int status;
1275 int speed;
1276 u32 value;
1277
1278 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1279 if (status != 0)
1280 return false;
1281
1282 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1283 if (status != 0)
1284 return false;
1285
1286 /*
1287 * We need to find a better way, probably using sfun,
1288 * bits or spec ...
1289 * Currently we disable it if:
1290 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1291 * - reverved bits are non-zero
1292 * - sfun and presence bit are not set
1293 */
1294 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1295 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1296}
1297
1298static int asus_fan_set_auto(struct asus_wmi *asus)
1299{
1300 int status;
1301 u32 retval;
1302
1303 switch (asus->fan_type) {
1304 case FAN_TYPE_SPEC83:
1305 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1306 0, &retval);
1307 if (status)
1308 return status;
1309
1310 if (retval != 1)
1311 return -EIO;
1312 break;
1313
1314 case FAN_TYPE_AGFN:
1315 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1316 if (status)
1317 return -ENXIO;
1318 break;
1319
1320 default:
1321 return -ENXIO;
1322 }
1323
1324
1325 return 0;
1326}
1327
1328static ssize_t pwm1_show(struct device *dev,
1329 struct device_attribute *attr,
1330 char *buf)
1331{
1332 struct asus_wmi *asus = dev_get_drvdata(dev);
1333 int err;
1334 int value;
1335
1336 /* If we already set a value then just return it */
1337 if (asus->agfn_pwm >= 0)
1338 return sprintf(buf, "%d\n", asus->agfn_pwm);
1339
1340 /*
1341 * If we haven't set already set a value through the AGFN interface,
1342 * we read a current value through the (now-deprecated) FAN_CTRL device.
1343 */
1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1345 if (err < 0)
1346 return err;
1347
1348 value &= 0xFF;
1349
1350 if (value == 1) /* Low Speed */
1351 value = 85;
1352 else if (value == 2)
1353 value = 170;
1354 else if (value == 3)
1355 value = 255;
1356 else if (value) {
1357 pr_err("Unknown fan speed %#x\n", value);
1358 value = -1;
1359 }
1360
1361 return sprintf(buf, "%d\n", value);
1362}
1363
1364static ssize_t pwm1_store(struct device *dev,
1365 struct device_attribute *attr,
1366 const char *buf, size_t count) {
1367 struct asus_wmi *asus = dev_get_drvdata(dev);
1368 int value;
1369 int state;
1370 int ret;
1371
1372 ret = kstrtouint(buf, 10, &value);
1373 if (ret)
1374 return ret;
1375
1376 value = clamp(value, 0, 255);
1377
1378 state = asus_agfn_fan_speed_write(asus, 1, &value);
1379 if (state)
1380 pr_warn("Setting fan speed failed: %d\n", state);
1381 else
1382 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1383
1384 return count;
1385}
1386
1387static ssize_t fan1_input_show(struct device *dev,
1388 struct device_attribute *attr,
1389 char *buf)
1390{
1391 struct asus_wmi *asus = dev_get_drvdata(dev);
1392 int value;
1393 int ret;
1394
1395 switch (asus->fan_type) {
1396 case FAN_TYPE_SPEC83:
1397 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1398 &value);
1399 if (ret < 0)
1400 return ret;
1401
1402 value &= 0xffff;
1403 break;
1404
1405 case FAN_TYPE_AGFN:
1406 /* no speed readable on manual mode */
1407 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1408 return -ENXIO;
1409
1410 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1411 if (ret) {
1412 pr_warn("reading fan speed failed: %d\n", ret);
1413 return -ENXIO;
1414 }
1415 break;
1416
1417 default:
1418 return -ENXIO;
1419 }
1420
1421 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1422}
1423
1424static ssize_t pwm1_enable_show(struct device *dev,
1425 struct device_attribute *attr,
1426 char *buf)
1427{
1428 struct asus_wmi *asus = dev_get_drvdata(dev);
1429
1430 /*
1431 * Just read back the cached pwm mode.
1432 *
1433 * For the CPU_FAN device, the spec indicates that we should be
1434 * able to read the device status and consult bit 19 to see if we
1435 * are in Full On or Automatic mode. However, this does not work
1436 * in practice on X532FL at least (the bit is always 0) and there's
1437 * also nothing in the DSDT to indicate that this behaviour exists.
1438 */
1439 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1440}
1441
1442static ssize_t pwm1_enable_store(struct device *dev,
1443 struct device_attribute *attr,
1444 const char *buf, size_t count)
1445{
1446 struct asus_wmi *asus = dev_get_drvdata(dev);
1447 int status = 0;
1448 int state;
1449 int value;
1450 int ret;
1451 u32 retval;
1452
1453 ret = kstrtouint(buf, 10, &state);
1454 if (ret)
1455 return ret;
1456
1457 if (asus->fan_type == FAN_TYPE_SPEC83) {
1458 switch (state) { /* standard documented hwmon values */
1459 case ASUS_FAN_CTRL_FULLSPEED:
1460 value = 1;
1461 break;
1462 case ASUS_FAN_CTRL_AUTO:
1463 value = 0;
1464 break;
1465 default:
1466 return -EINVAL;
1467 }
1468
1469 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1470 value, &retval);
1471 if (ret)
1472 return ret;
1473
1474 if (retval != 1)
1475 return -EIO;
1476 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1477 switch (state) {
1478 case ASUS_FAN_CTRL_MANUAL:
1479 break;
1480
1481 case ASUS_FAN_CTRL_AUTO:
1482 status = asus_fan_set_auto(asus);
1483 if (status)
1484 return status;
1485 break;
1486
1487 default:
1488 return -EINVAL;
1489 }
1490 }
1491
1492 asus->fan_pwm_mode = state;
1493 return count;
1494}
1495
1496static ssize_t fan1_label_show(struct device *dev,
1497 struct device_attribute *attr,
1498 char *buf)
1499{
1500 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1501}
1502
1503static ssize_t asus_hwmon_temp1(struct device *dev,
1504 struct device_attribute *attr,
1505 char *buf)
1506{
1507 struct asus_wmi *asus = dev_get_drvdata(dev);
1508 u32 value;
1509 int err;
1510
1511 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1512 if (err < 0)
1513 return err;
1514
1515 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1516
1517 return sprintf(buf, "%d\n", value);
1518}
1519
1520/* Fan1 */
1521static DEVICE_ATTR_RW(pwm1);
1522static DEVICE_ATTR_RW(pwm1_enable);
1523static DEVICE_ATTR_RO(fan1_input);
1524static DEVICE_ATTR_RO(fan1_label);
1525
1526/* Temperature */
1527static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1528
1529static struct attribute *hwmon_attributes[] = {
1530 &dev_attr_pwm1.attr,
1531 &dev_attr_pwm1_enable.attr,
1532 &dev_attr_fan1_input.attr,
1533 &dev_attr_fan1_label.attr,
1534
1535 &dev_attr_temp1_input.attr,
1536 NULL
1537};
1538
1539static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1540 struct attribute *attr, int idx)
1541{
1542 struct device *dev = container_of(kobj, struct device, kobj);
1543 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1544 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1545
1546 if (attr == &dev_attr_pwm1.attr) {
1547 if (asus->fan_type != FAN_TYPE_AGFN)
1548 return 0;
1549 } else if (attr == &dev_attr_fan1_input.attr
1550 || attr == &dev_attr_fan1_label.attr
1551 || attr == &dev_attr_pwm1_enable.attr) {
1552 if (asus->fan_type == FAN_TYPE_NONE)
1553 return 0;
1554 } else if (attr == &dev_attr_temp1_input.attr) {
1555 int err = asus_wmi_get_devstate(asus,
1556 ASUS_WMI_DEVID_THERMAL_CTRL,
1557 &value);
1558
1559 if (err < 0)
1560 return 0; /* can't return negative here */
1561
1562 /*
1563 * If the temperature value in deci-Kelvin is near the absolute
1564 * zero temperature, something is clearly wrong
1565 */
1566 if (value == 0 || value == 1)
1567 return 0;
1568 }
1569
1570 return attr->mode;
1571}
1572
1573static const struct attribute_group hwmon_attribute_group = {
1574 .is_visible = asus_hwmon_sysfs_is_visible,
1575 .attrs = hwmon_attributes
1576};
1577__ATTRIBUTE_GROUPS(hwmon_attribute);
1578
1579static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1580{
1581 struct device *dev = &asus->platform_device->dev;
1582 struct device *hwmon;
1583
1584 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1585 hwmon_attribute_groups);
1586
1587 if (IS_ERR(hwmon)) {
1588 pr_err("Could not register asus hwmon device\n");
1589 return PTR_ERR(hwmon);
1590 }
1591 return 0;
1592}
1593
1594static int asus_wmi_fan_init(struct asus_wmi *asus)
1595{
1596 asus->fan_type = FAN_TYPE_NONE;
1597 asus->agfn_pwm = -1;
1598
1599 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1600 asus->fan_type = FAN_TYPE_SPEC83;
1601 else if (asus_wmi_has_agfn_fan(asus))
1602 asus->fan_type = FAN_TYPE_AGFN;
1603
1604 if (asus->fan_type == FAN_TYPE_NONE)
1605 return -ENODEV;
1606
1607 asus_fan_set_auto(asus);
1608 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1609 return 0;
1610}
1611
1612/* Fan mode *******************************************************************/
1613
1614static int fan_boost_mode_check_present(struct asus_wmi *asus)
1615{
1616 u32 result;
1617 int err;
1618
1619 asus->fan_boost_mode_available = false;
1620
1621 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1622 &result);
1623 if (err) {
1624 if (err == -ENODEV)
1625 return 0;
1626 else
1627 return err;
1628 }
1629
1630 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1631 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1632 asus->fan_boost_mode_available = true;
1633 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1634 }
1635
1636 return 0;
1637}
1638
1639static int fan_boost_mode_write(struct asus_wmi *asus)
1640{
1641 int err;
1642 u8 value;
1643 u32 retval;
1644
1645 value = asus->fan_boost_mode;
1646
1647 pr_info("Set fan boost mode: %u\n", value);
1648 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1649 &retval);
1650 if (err) {
1651 pr_warn("Failed to set fan boost mode: %d\n", err);
1652 return err;
1653 }
1654
1655 if (retval != 1) {
1656 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1657 retval);
1658 return -EIO;
1659 }
1660
1661 return 0;
1662}
1663
1664static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1665{
1666 u8 mask = asus->fan_boost_mode_mask;
1667
1668 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1669 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1670 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1671 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1672 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1673 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1674 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1675 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1676 else
1677 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1678 } else {
1679 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1680 }
1681
1682 return fan_boost_mode_write(asus);
1683}
1684
1685static ssize_t fan_boost_mode_show(struct device *dev,
1686 struct device_attribute *attr, char *buf)
1687{
1688 struct asus_wmi *asus = dev_get_drvdata(dev);
1689
1690 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1691}
1692
1693static ssize_t fan_boost_mode_store(struct device *dev,
1694 struct device_attribute *attr,
1695 const char *buf, size_t count)
1696{
1697 int result;
1698 u8 new_mode;
1699 struct asus_wmi *asus = dev_get_drvdata(dev);
1700 u8 mask = asus->fan_boost_mode_mask;
1701
1702 result = kstrtou8(buf, 10, &new_mode);
1703 if (result < 0) {
1704 pr_warn("Trying to store invalid value\n");
1705 return result;
1706 }
1707
1708 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1709 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1710 return -EINVAL;
1711 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1712 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1713 return -EINVAL;
1714 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1715 return -EINVAL;
1716 }
1717
1718 asus->fan_boost_mode = new_mode;
1719 fan_boost_mode_write(asus);
1720
1721 return result;
1722}
1723
1724// Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1725static DEVICE_ATTR_RW(fan_boost_mode);
1726
1727/* Backlight ******************************************************************/
1728
1729static int read_backlight_power(struct asus_wmi *asus)
1730{
1731 int ret;
1732
1733 if (asus->driver->quirks->store_backlight_power)
1734 ret = !asus->driver->panel_power;
1735 else
1736 ret = asus_wmi_get_devstate_simple(asus,
1737 ASUS_WMI_DEVID_BACKLIGHT);
1738
1739 if (ret < 0)
1740 return ret;
1741
1742 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1743}
1744
1745static int read_brightness_max(struct asus_wmi *asus)
1746{
1747 u32 retval;
1748 int err;
1749
1750 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1751 if (err < 0)
1752 return err;
1753
1754 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1755 retval >>= 8;
1756
1757 if (!retval)
1758 return -ENODEV;
1759
1760 return retval;
1761}
1762
1763static int read_brightness(struct backlight_device *bd)
1764{
1765 struct asus_wmi *asus = bl_get_data(bd);
1766 u32 retval;
1767 int err;
1768
1769 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1770 if (err < 0)
1771 return err;
1772
1773 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1774}
1775
1776static u32 get_scalar_command(struct backlight_device *bd)
1777{
1778 struct asus_wmi *asus = bl_get_data(bd);
1779 u32 ctrl_param = 0;
1780
1781 if ((asus->driver->brightness < bd->props.brightness) ||
1782 bd->props.brightness == bd->props.max_brightness)
1783 ctrl_param = 0x00008001;
1784 else if ((asus->driver->brightness > bd->props.brightness) ||
1785 bd->props.brightness == 0)
1786 ctrl_param = 0x00008000;
1787
1788 asus->driver->brightness = bd->props.brightness;
1789
1790 return ctrl_param;
1791}
1792
1793static int update_bl_status(struct backlight_device *bd)
1794{
1795 struct asus_wmi *asus = bl_get_data(bd);
1796 u32 ctrl_param;
1797 int power, err = 0;
1798
1799 power = read_backlight_power(asus);
1800 if (power != -ENODEV && bd->props.power != power) {
1801 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1802 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1803 ctrl_param, NULL);
1804 if (asus->driver->quirks->store_backlight_power)
1805 asus->driver->panel_power = bd->props.power;
1806
1807 /* When using scalar brightness, updating the brightness
1808 * will mess with the backlight power */
1809 if (asus->driver->quirks->scalar_panel_brightness)
1810 return err;
1811 }
1812
1813 if (asus->driver->quirks->scalar_panel_brightness)
1814 ctrl_param = get_scalar_command(bd);
1815 else
1816 ctrl_param = bd->props.brightness;
1817
1818 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1819 ctrl_param, NULL);
1820
1821 return err;
1822}
1823
1824static const struct backlight_ops asus_wmi_bl_ops = {
1825 .get_brightness = read_brightness,
1826 .update_status = update_bl_status,
1827};
1828
1829static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1830{
1831 struct backlight_device *bd = asus->backlight_device;
1832 int old = bd->props.brightness;
1833 int new = old;
1834
1835 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1836 new = code - NOTIFY_BRNUP_MIN + 1;
1837 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1838 new = code - NOTIFY_BRNDOWN_MIN;
1839
1840 bd->props.brightness = new;
1841 backlight_update_status(bd);
1842 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1843
1844 return old;
1845}
1846
1847static int asus_wmi_backlight_init(struct asus_wmi *asus)
1848{
1849 struct backlight_device *bd;
1850 struct backlight_properties props;
1851 int max;
1852 int power;
1853
1854 max = read_brightness_max(asus);
1855 if (max < 0)
1856 return max;
1857
1858 power = read_backlight_power(asus);
1859 if (power == -ENODEV)
1860 power = FB_BLANK_UNBLANK;
1861 else if (power < 0)
1862 return power;
1863
1864 memset(&props, 0, sizeof(struct backlight_properties));
1865 props.type = BACKLIGHT_PLATFORM;
1866 props.max_brightness = max;
1867 bd = backlight_device_register(asus->driver->name,
1868 &asus->platform_device->dev, asus,
1869 &asus_wmi_bl_ops, &props);
1870 if (IS_ERR(bd)) {
1871 pr_err("Could not register backlight device\n");
1872 return PTR_ERR(bd);
1873 }
1874
1875 asus->backlight_device = bd;
1876
1877 if (asus->driver->quirks->store_backlight_power)
1878 asus->driver->panel_power = power;
1879
1880 bd->props.brightness = read_brightness(bd);
1881 bd->props.power = power;
1882 backlight_update_status(bd);
1883
1884 asus->driver->brightness = bd->props.brightness;
1885
1886 return 0;
1887}
1888
1889static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1890{
1891 backlight_device_unregister(asus->backlight_device);
1892
1893 asus->backlight_device = NULL;
1894}
1895
1896static int is_display_toggle(int code)
1897{
1898 /* display toggle keys */
1899 if ((code >= 0x61 && code <= 0x67) ||
1900 (code >= 0x8c && code <= 0x93) ||
1901 (code >= 0xa0 && code <= 0xa7) ||
1902 (code >= 0xd0 && code <= 0xd5))
1903 return 1;
1904
1905 return 0;
1906}
1907
1908/* Fn-lock ********************************************************************/
1909
1910static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
1911{
1912 u32 result;
1913
1914 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
1915
1916 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1917 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
1918}
1919
1920static void asus_wmi_fnlock_update(struct asus_wmi *asus)
1921{
1922 int mode = asus->fnlock_locked;
1923
1924 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
1925}
1926
1927/* WMI events *****************************************************************/
1928
1929static int asus_wmi_get_event_code(u32 value)
1930{
1931 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1932 union acpi_object *obj;
1933 acpi_status status;
1934 int code;
1935
1936 status = wmi_get_event_data(value, &response);
1937 if (ACPI_FAILURE(status)) {
1938 pr_warn("Failed to get WMI notify code: %s\n",
1939 acpi_format_exception(status));
1940 return -EIO;
1941 }
1942
1943 obj = (union acpi_object *)response.pointer;
1944
1945 if (obj && obj->type == ACPI_TYPE_INTEGER)
1946 code = (int)(obj->integer.value & WMI_EVENT_MASK);
1947 else
1948 code = -EIO;
1949
1950 kfree(obj);
1951 return code;
1952}
1953
1954static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
1955{
1956 int orig_code;
1957 unsigned int key_value = 1;
1958 bool autorelease = 1;
1959
1960 orig_code = code;
1961
1962 if (asus->driver->key_filter) {
1963 asus->driver->key_filter(asus->driver, &code, &key_value,
1964 &autorelease);
1965 if (code == ASUS_WMI_KEY_IGNORE)
1966 return;
1967 }
1968
1969 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1970 code = ASUS_WMI_BRN_UP;
1971 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1972 code = ASUS_WMI_BRN_DOWN;
1973
1974 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1975 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1976 asus_wmi_backlight_notify(asus, orig_code);
1977 return;
1978 }
1979 }
1980
1981 if (code == NOTIFY_KBD_BRTUP) {
1982 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1983 return;
1984 }
1985 if (code == NOTIFY_KBD_BRTDWN) {
1986 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
1987 return;
1988 }
1989 if (code == NOTIFY_KBD_BRTTOGGLE) {
1990 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1991 kbd_led_set_by_kbd(asus, 0);
1992 else
1993 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1994 return;
1995 }
1996
1997 if (code == NOTIFY_FNLOCK_TOGGLE) {
1998 asus->fnlock_locked = !asus->fnlock_locked;
1999 asus_wmi_fnlock_update(asus);
2000 return;
2001 }
2002
2003 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2004 fan_boost_mode_switch_next(asus);
2005 return;
2006 }
2007
2008 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2009 return;
2010
2011 if (!sparse_keymap_report_event(asus->inputdev, code,
2012 key_value, autorelease))
2013 pr_info("Unknown key %x pressed\n", code);
2014}
2015
2016static void asus_wmi_notify(u32 value, void *context)
2017{
2018 struct asus_wmi *asus = context;
2019 int code;
2020 int i;
2021
2022 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2023 code = asus_wmi_get_event_code(value);
2024 if (code < 0) {
2025 pr_warn("Failed to get notify code: %d\n", code);
2026 return;
2027 }
2028
2029 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2030 return;
2031
2032 asus_wmi_handle_event_code(code, asus);
2033
2034 /*
2035 * Double check that queue is present:
2036 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2037 */
2038 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2039 return;
2040 }
2041
2042 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2043}
2044
2045static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2046{
2047 int code;
2048 int i;
2049
2050 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2051 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2052 if (code < 0) {
2053 pr_warn("Failed to get event during flush: %d\n", code);
2054 return code;
2055 }
2056
2057 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2058 return 0;
2059 }
2060
2061 pr_warn("Failed to flush event queue\n");
2062 return -EIO;
2063}
2064
2065/* Sysfs **********************************************************************/
2066
2067static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2068 const char *buf, size_t count)
2069{
2070 u32 retval;
2071 int err, value;
2072
2073 value = asus_wmi_get_devstate_simple(asus, devid);
2074 if (value < 0)
2075 return value;
2076
2077 err = kstrtoint(buf, 0, &value);
2078 if (err)
2079 return err;
2080
2081 err = asus_wmi_set_devstate(devid, value, &retval);
2082 if (err < 0)
2083 return err;
2084
2085 return count;
2086}
2087
2088static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2089{
2090 int value = asus_wmi_get_devstate_simple(asus, devid);
2091
2092 if (value < 0)
2093 return value;
2094
2095 return sprintf(buf, "%d\n", value);
2096}
2097
2098#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2099 static ssize_t show_##_name(struct device *dev, \
2100 struct device_attribute *attr, \
2101 char *buf) \
2102 { \
2103 struct asus_wmi *asus = dev_get_drvdata(dev); \
2104 \
2105 return show_sys_wmi(asus, _cm, buf); \
2106 } \
2107 static ssize_t store_##_name(struct device *dev, \
2108 struct device_attribute *attr, \
2109 const char *buf, size_t count) \
2110 { \
2111 struct asus_wmi *asus = dev_get_drvdata(dev); \
2112 \
2113 return store_sys_wmi(asus, _cm, buf, count); \
2114 } \
2115 static struct device_attribute dev_attr_##_name = { \
2116 .attr = { \
2117 .name = __stringify(_name), \
2118 .mode = _mode }, \
2119 .show = show_##_name, \
2120 .store = store_##_name, \
2121 }
2122
2123ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2124ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2125ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2126ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2127ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2128
2129static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2130 const char *buf, size_t count)
2131{
2132 int value, rv;
2133
2134 rv = kstrtoint(buf, 0, &value);
2135 if (rv)
2136 return rv;
2137
2138 if (value < 0 || value > 2)
2139 return -EINVAL;
2140
2141 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2142 if (rv < 0)
2143 return rv;
2144
2145 return count;
2146}
2147
2148static DEVICE_ATTR_WO(cpufv);
2149
2150static struct attribute *platform_attributes[] = {
2151 &dev_attr_cpufv.attr,
2152 &dev_attr_camera.attr,
2153 &dev_attr_cardr.attr,
2154 &dev_attr_touchpad.attr,
2155 &dev_attr_lid_resume.attr,
2156 &dev_attr_als_enable.attr,
2157 &dev_attr_fan_boost_mode.attr,
2158 NULL
2159};
2160
2161static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2162 struct attribute *attr, int idx)
2163{
2164 struct device *dev = container_of(kobj, struct device, kobj);
2165 struct asus_wmi *asus = dev_get_drvdata(dev);
2166 bool ok = true;
2167 int devid = -1;
2168
2169 if (attr == &dev_attr_camera.attr)
2170 devid = ASUS_WMI_DEVID_CAMERA;
2171 else if (attr == &dev_attr_cardr.attr)
2172 devid = ASUS_WMI_DEVID_CARDREADER;
2173 else if (attr == &dev_attr_touchpad.attr)
2174 devid = ASUS_WMI_DEVID_TOUCHPAD;
2175 else if (attr == &dev_attr_lid_resume.attr)
2176 devid = ASUS_WMI_DEVID_LID_RESUME;
2177 else if (attr == &dev_attr_als_enable.attr)
2178 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2179 else if (attr == &dev_attr_fan_boost_mode.attr)
2180 ok = asus->fan_boost_mode_available;
2181
2182 if (devid != -1)
2183 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2184
2185 return ok ? attr->mode : 0;
2186}
2187
2188static const struct attribute_group platform_attribute_group = {
2189 .is_visible = asus_sysfs_is_visible,
2190 .attrs = platform_attributes
2191};
2192
2193static void asus_wmi_sysfs_exit(struct platform_device *device)
2194{
2195 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2196}
2197
2198static int asus_wmi_sysfs_init(struct platform_device *device)
2199{
2200 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2201}
2202
2203/* Platform device ************************************************************/
2204
2205static int asus_wmi_platform_init(struct asus_wmi *asus)
2206{
2207 struct device *dev = &asus->platform_device->dev;
2208 char *wmi_uid;
2209 int rv;
2210
2211 /* INIT enable hotkeys on some models */
2212 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2213 pr_info("Initialization: %#x\n", rv);
2214
2215 /* We don't know yet what to do with this version... */
2216 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2217 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2218 asus->spec = rv;
2219 }
2220
2221 /*
2222 * The SFUN method probably allows the original driver to get the list
2223 * of features supported by a given model. For now, 0x0100 or 0x0800
2224 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2225 * The significance of others is yet to be found.
2226 */
2227 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2228 pr_info("SFUN value: %#x\n", rv);
2229 asus->sfun = rv;
2230 }
2231
2232 /*
2233 * Eee PC and Notebooks seems to have different method_id for DSTS,
2234 * but it may also be related to the BIOS's SPEC.
2235 * Note, on most Eeepc, there is no way to check if a method exist
2236 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2237 * but once again, SPEC may probably be used for that kind of things.
2238 *
2239 * Additionally at least TUF Gaming series laptops return nothing for
2240 * unknown methods, so the detection in this way is not possible.
2241 *
2242 * There is strong indication that only ACPI WMI devices that have _UID
2243 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2244 */
2245 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2246 if (!wmi_uid)
2247 return -ENODEV;
2248
2249 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2250 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2251 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2252 } else {
2253 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2254 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2255 }
2256
2257 /*
2258 * Some devices can have multiple event codes stored in a queue before
2259 * the module load if it was unloaded intermittently after calling
2260 * the INIT method (enables event handling). The WMI notify handler is
2261 * expected to retrieve all event codes until a retrieved code equals
2262 * queue end marker (One or Ones). Old codes are flushed from the queue
2263 * upon module load. Not enabling this when it should be has minimal
2264 * visible impact so fall back if anything goes wrong.
2265 */
2266 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2267 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2268 dev_info(dev, "Detected ATK, enable event queue\n");
2269
2270 if (!asus_wmi_notify_queue_flush(asus))
2271 asus->wmi_event_queue = true;
2272 }
2273
2274 /* CWAP allow to define the behavior of the Fn+F2 key,
2275 * this method doesn't seems to be present on Eee PCs */
2276 if (asus->driver->quirks->wapf >= 0)
2277 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2278 asus->driver->quirks->wapf, NULL);
2279
2280 return 0;
2281}
2282
2283/* debugfs ********************************************************************/
2284
2285struct asus_wmi_debugfs_node {
2286 struct asus_wmi *asus;
2287 char *name;
2288 int (*show) (struct seq_file *m, void *data);
2289};
2290
2291static int show_dsts(struct seq_file *m, void *data)
2292{
2293 struct asus_wmi *asus = m->private;
2294 int err;
2295 u32 retval = -1;
2296
2297 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2298 if (err < 0)
2299 return err;
2300
2301 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2302
2303 return 0;
2304}
2305
2306static int show_devs(struct seq_file *m, void *data)
2307{
2308 struct asus_wmi *asus = m->private;
2309 int err;
2310 u32 retval = -1;
2311
2312 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2313 &retval);
2314 if (err < 0)
2315 return err;
2316
2317 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2318 asus->debug.ctrl_param, retval);
2319
2320 return 0;
2321}
2322
2323static int show_call(struct seq_file *m, void *data)
2324{
2325 struct asus_wmi *asus = m->private;
2326 struct bios_args args = {
2327 .arg0 = asus->debug.dev_id,
2328 .arg1 = asus->debug.ctrl_param,
2329 };
2330 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2331 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2332 union acpi_object *obj;
2333 acpi_status status;
2334
2335 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2336 0, asus->debug.method_id,
2337 &input, &output);
2338
2339 if (ACPI_FAILURE(status))
2340 return -EIO;
2341
2342 obj = (union acpi_object *)output.pointer;
2343 if (obj && obj->type == ACPI_TYPE_INTEGER)
2344 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2345 asus->debug.dev_id, asus->debug.ctrl_param,
2346 (u32) obj->integer.value);
2347 else
2348 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2349 asus->debug.dev_id, asus->debug.ctrl_param,
2350 obj ? obj->type : -1);
2351
2352 kfree(obj);
2353
2354 return 0;
2355}
2356
2357static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2358 {NULL, "devs", show_devs},
2359 {NULL, "dsts", show_dsts},
2360 {NULL, "call", show_call},
2361};
2362
2363static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2364{
2365 struct asus_wmi_debugfs_node *node = inode->i_private;
2366
2367 return single_open(file, node->show, node->asus);
2368}
2369
2370static const struct file_operations asus_wmi_debugfs_io_ops = {
2371 .owner = THIS_MODULE,
2372 .open = asus_wmi_debugfs_open,
2373 .read = seq_read,
2374 .llseek = seq_lseek,
2375 .release = single_release,
2376};
2377
2378static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2379{
2380 debugfs_remove_recursive(asus->debug.root);
2381}
2382
2383static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2384{
2385 int i;
2386
2387 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2388
2389 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2390 &asus->debug.method_id);
2391
2392 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2393 &asus->debug.dev_id);
2394
2395 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2396 &asus->debug.ctrl_param);
2397
2398 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2399 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2400
2401 node->asus = asus;
2402 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2403 asus->debug.root, node,
2404 &asus_wmi_debugfs_io_ops);
2405 }
2406}
2407
2408/* Init / exit ****************************************************************/
2409
2410static int asus_wmi_add(struct platform_device *pdev)
2411{
2412 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2413 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2414 struct asus_wmi *asus;
2415 const char *chassis_type;
2416 acpi_status status;
2417 int err;
2418 u32 result;
2419
2420 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2421 if (!asus)
2422 return -ENOMEM;
2423
2424 asus->driver = wdrv;
2425 asus->platform_device = pdev;
2426 wdrv->platform_device = pdev;
2427 platform_set_drvdata(asus->platform_device, asus);
2428
2429 if (wdrv->detect_quirks)
2430 wdrv->detect_quirks(asus->driver);
2431
2432 err = asus_wmi_platform_init(asus);
2433 if (err)
2434 goto fail_platform;
2435
2436 err = fan_boost_mode_check_present(asus);
2437 if (err)
2438 goto fail_fan_boost_mode;
2439
2440 err = asus_wmi_sysfs_init(asus->platform_device);
2441 if (err)
2442 goto fail_sysfs;
2443
2444 err = asus_wmi_input_init(asus);
2445 if (err)
2446 goto fail_input;
2447
2448 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2449
2450 err = asus_wmi_hwmon_init(asus);
2451 if (err)
2452 goto fail_hwmon;
2453
2454 err = asus_wmi_led_init(asus);
2455 if (err)
2456 goto fail_leds;
2457
2458 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2459 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2460 asus->driver->wlan_ctrl_by_user = 1;
2461
2462 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2463 err = asus_wmi_rfkill_init(asus);
2464 if (err)
2465 goto fail_rfkill;
2466 }
2467
2468 if (asus->driver->quirks->wmi_force_als_set)
2469 asus_wmi_set_als();
2470
2471 /* Some Asus desktop boards export an acpi-video backlight interface,
2472 stop this from showing up */
2473 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2474 if (chassis_type && !strcmp(chassis_type, "3"))
2475 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2476
2477 if (asus->driver->quirks->wmi_backlight_power)
2478 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2479
2480 if (asus->driver->quirks->wmi_backlight_native)
2481 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2482
2483 if (asus->driver->quirks->xusb2pr)
2484 asus_wmi_set_xusb2pr(asus);
2485
2486 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2487 err = asus_wmi_backlight_init(asus);
2488 if (err && err != -ENODEV)
2489 goto fail_backlight;
2490 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2491 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2492
2493 if (asus_wmi_has_fnlock_key(asus)) {
2494 asus->fnlock_locked = true;
2495 asus_wmi_fnlock_update(asus);
2496 }
2497
2498 status = wmi_install_notify_handler(asus->driver->event_guid,
2499 asus_wmi_notify, asus);
2500 if (ACPI_FAILURE(status)) {
2501 pr_err("Unable to register notify handler - %d\n", status);
2502 err = -ENODEV;
2503 goto fail_wmi_handler;
2504 }
2505
2506 asus_wmi_battery_init(asus);
2507
2508 asus_wmi_debugfs_init(asus);
2509
2510 return 0;
2511
2512fail_wmi_handler:
2513 asus_wmi_backlight_exit(asus);
2514fail_backlight:
2515 asus_wmi_rfkill_exit(asus);
2516fail_rfkill:
2517 asus_wmi_led_exit(asus);
2518fail_leds:
2519fail_hwmon:
2520 asus_wmi_input_exit(asus);
2521fail_input:
2522 asus_wmi_sysfs_exit(asus->platform_device);
2523fail_sysfs:
2524fail_fan_boost_mode:
2525fail_platform:
2526 kfree(asus);
2527 return err;
2528}
2529
2530static int asus_wmi_remove(struct platform_device *device)
2531{
2532 struct asus_wmi *asus;
2533
2534 asus = platform_get_drvdata(device);
2535 wmi_remove_notify_handler(asus->driver->event_guid);
2536 asus_wmi_backlight_exit(asus);
2537 asus_wmi_input_exit(asus);
2538 asus_wmi_led_exit(asus);
2539 asus_wmi_rfkill_exit(asus);
2540 asus_wmi_debugfs_exit(asus);
2541 asus_wmi_sysfs_exit(asus->platform_device);
2542 asus_fan_set_auto(asus);
2543 asus_wmi_battery_exit(asus);
2544
2545 kfree(asus);
2546 return 0;
2547}
2548
2549/* Platform driver - hibernate/resume callbacks *******************************/
2550
2551static int asus_hotk_thaw(struct device *device)
2552{
2553 struct asus_wmi *asus = dev_get_drvdata(device);
2554
2555 if (asus->wlan.rfkill) {
2556 bool wlan;
2557
2558 /*
2559 * Work around bios bug - acpi _PTS turns off the wireless led
2560 * during suspend. Normally it restores it on resume, but
2561 * we should kick it ourselves in case hibernation is aborted.
2562 */
2563 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2564 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2565 }
2566
2567 return 0;
2568}
2569
2570static int asus_hotk_resume(struct device *device)
2571{
2572 struct asus_wmi *asus = dev_get_drvdata(device);
2573
2574 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2575 kbd_led_update(asus);
2576
2577 if (asus_wmi_has_fnlock_key(asus))
2578 asus_wmi_fnlock_update(asus);
2579 return 0;
2580}
2581
2582static int asus_hotk_restore(struct device *device)
2583{
2584 struct asus_wmi *asus = dev_get_drvdata(device);
2585 int bl;
2586
2587 /* Refresh both wlan rfkill state and pci hotplug */
2588 if (asus->wlan.rfkill)
2589 asus_rfkill_hotplug(asus);
2590
2591 if (asus->bluetooth.rfkill) {
2592 bl = !asus_wmi_get_devstate_simple(asus,
2593 ASUS_WMI_DEVID_BLUETOOTH);
2594 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2595 }
2596 if (asus->wimax.rfkill) {
2597 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2598 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2599 }
2600 if (asus->wwan3g.rfkill) {
2601 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2602 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2603 }
2604 if (asus->gps.rfkill) {
2605 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2606 rfkill_set_sw_state(asus->gps.rfkill, bl);
2607 }
2608 if (asus->uwb.rfkill) {
2609 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2610 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2611 }
2612 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2613 kbd_led_update(asus);
2614
2615 if (asus_wmi_has_fnlock_key(asus))
2616 asus_wmi_fnlock_update(asus);
2617 return 0;
2618}
2619
2620static const struct dev_pm_ops asus_pm_ops = {
2621 .thaw = asus_hotk_thaw,
2622 .restore = asus_hotk_restore,
2623 .resume = asus_hotk_resume,
2624};
2625
2626/* Registration ***************************************************************/
2627
2628static int asus_wmi_probe(struct platform_device *pdev)
2629{
2630 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2631 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2632 int ret;
2633
2634 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2635 pr_warn("ASUS Management GUID not found\n");
2636 return -ENODEV;
2637 }
2638
2639 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2640 pr_warn("ASUS Event GUID not found\n");
2641 return -ENODEV;
2642 }
2643
2644 if (wdrv->probe) {
2645 ret = wdrv->probe(pdev);
2646 if (ret)
2647 return ret;
2648 }
2649
2650 return asus_wmi_add(pdev);
2651}
2652
2653static bool used;
2654
2655int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2656{
2657 struct platform_driver *platform_driver;
2658 struct platform_device *platform_device;
2659
2660 if (used)
2661 return -EBUSY;
2662
2663 platform_driver = &driver->platform_driver;
2664 platform_driver->remove = asus_wmi_remove;
2665 platform_driver->driver.owner = driver->owner;
2666 platform_driver->driver.name = driver->name;
2667 platform_driver->driver.pm = &asus_pm_ops;
2668
2669 platform_device = platform_create_bundle(platform_driver,
2670 asus_wmi_probe,
2671 NULL, 0, NULL, 0);
2672 if (IS_ERR(platform_device))
2673 return PTR_ERR(platform_device);
2674
2675 used = true;
2676 return 0;
2677}
2678EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2679
2680void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2681{
2682 platform_device_unregister(driver->platform_device);
2683 platform_driver_unregister(&driver->platform_driver);
2684 used = false;
2685}
2686EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2687
2688static int __init asus_wmi_init(void)
2689{
2690 pr_info("ASUS WMI generic driver loaded\n");
2691 return 0;
2692}
2693
2694static void __exit asus_wmi_exit(void)
2695{
2696 pr_info("ASUS WMI generic driver unloaded\n");
2697}
2698
2699module_init(asus_wmi_init);
2700module_exit(asus_wmi_exit);