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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/acpi.h>
37#include <linux/dmi.h>
38#include <linux/units.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
50static bool fnlock_default = true;
51module_param(fnlock_default, bool, 0444);
52
53#define to_asus_wmi_driver(pdrv) \
54 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
55
56#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
57
58#define NOTIFY_BRNUP_MIN 0x11
59#define NOTIFY_BRNUP_MAX 0x1f
60#define NOTIFY_BRNDOWN_MIN 0x20
61#define NOTIFY_BRNDOWN_MAX 0x2e
62#define NOTIFY_FNLOCK_TOGGLE 0x4e
63#define NOTIFY_KBD_DOCK_CHANGE 0x75
64#define NOTIFY_KBD_BRTUP 0xc4
65#define NOTIFY_KBD_BRTDWN 0xc5
66#define NOTIFY_KBD_BRTTOGGLE 0xc7
67#define NOTIFY_KBD_FBM 0x99
68#define NOTIFY_KBD_TTP 0xae
69#define NOTIFY_LID_FLIP 0xfa
70
71#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
72
73#define ASUS_FAN_DESC "cpu_fan"
74#define ASUS_FAN_MFUN 0x13
75#define ASUS_FAN_SFUN_READ 0x06
76#define ASUS_FAN_SFUN_WRITE 0x07
77
78/* Based on standard hwmon pwmX_enable values */
79#define ASUS_FAN_CTRL_FULLSPEED 0
80#define ASUS_FAN_CTRL_MANUAL 1
81#define ASUS_FAN_CTRL_AUTO 2
82
83#define ASUS_FAN_BOOST_MODE_NORMAL 0
84#define ASUS_FAN_BOOST_MODE_OVERBOOST 1
85#define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
86#define ASUS_FAN_BOOST_MODE_SILENT 2
87#define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
88#define ASUS_FAN_BOOST_MODES_MASK 0x03
89
90#define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0
91#define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
92#define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
93
94#define USB_INTEL_XUSB2PR 0xD0
95#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
96
97#define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
98#define ASUS_ACPI_UID_ATK "ATK"
99
100#define WMI_EVENT_QUEUE_SIZE 0x10
101#define WMI_EVENT_QUEUE_END 0x1
102#define WMI_EVENT_MASK 0xFFFF
103/* The WMI hotkey event value is always the same. */
104#define WMI_EVENT_VALUE_ATK 0xFF
105
106#define WMI_EVENT_MASK 0xFFFF
107
108static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
109
110static bool ashs_present(void)
111{
112 int i = 0;
113 while (ashs_ids[i]) {
114 if (acpi_dev_found(ashs_ids[i++]))
115 return true;
116 }
117 return false;
118}
119
120struct bios_args {
121 u32 arg0;
122 u32 arg1;
123 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
124 u32 arg4;
125 u32 arg5;
126} __packed;
127
128/*
129 * Struct that's used for all methods called via AGFN. Naming is
130 * identically to the AML code.
131 */
132struct agfn_args {
133 u16 mfun; /* probably "Multi-function" to be called */
134 u16 sfun; /* probably "Sub-function" to be called */
135 u16 len; /* size of the hole struct, including subfunction fields */
136 u8 stas; /* not used by now */
137 u8 err; /* zero on success */
138} __packed;
139
140/* struct used for calling fan read and write methods */
141struct agfn_fan_args {
142 struct agfn_args agfn; /* common fields */
143 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
144 u32 speed; /* read: RPM/100 - write: 0-255 */
145} __packed;
146
147/*
148 * <platform>/ - debugfs root directory
149 * dev_id - current dev_id
150 * ctrl_param - current ctrl_param
151 * method_id - current method_id
152 * devs - call DEVS(dev_id, ctrl_param) and print result
153 * dsts - call DSTS(dev_id) and print result
154 * call - call method_id(dev_id, ctrl_param) and print result
155 */
156struct asus_wmi_debug {
157 struct dentry *root;
158 u32 method_id;
159 u32 dev_id;
160 u32 ctrl_param;
161};
162
163struct asus_rfkill {
164 struct asus_wmi *asus;
165 struct rfkill *rfkill;
166 u32 dev_id;
167};
168
169enum fan_type {
170 FAN_TYPE_NONE = 0,
171 FAN_TYPE_AGFN, /* deprecated on newer platforms */
172 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
173};
174
175struct asus_wmi {
176 int dsts_id;
177 int spec;
178 int sfun;
179 bool wmi_event_queue;
180
181 struct input_dev *inputdev;
182 struct backlight_device *backlight_device;
183 struct platform_device *platform_device;
184
185 struct led_classdev wlan_led;
186 int wlan_led_wk;
187 struct led_classdev tpd_led;
188 int tpd_led_wk;
189 struct led_classdev kbd_led;
190 int kbd_led_wk;
191 struct led_classdev lightbar_led;
192 int lightbar_led_wk;
193 struct workqueue_struct *led_workqueue;
194 struct work_struct tpd_led_work;
195 struct work_struct wlan_led_work;
196 struct work_struct lightbar_led_work;
197
198 struct asus_rfkill wlan;
199 struct asus_rfkill bluetooth;
200 struct asus_rfkill wimax;
201 struct asus_rfkill wwan3g;
202 struct asus_rfkill gps;
203 struct asus_rfkill uwb;
204
205 enum fan_type fan_type;
206 int fan_pwm_mode;
207 int agfn_pwm;
208
209 bool fan_boost_mode_available;
210 u8 fan_boost_mode_mask;
211 u8 fan_boost_mode;
212
213 bool throttle_thermal_policy_available;
214 u8 throttle_thermal_policy_mode;
215
216 // The RSOC controls the maximum charging percentage.
217 bool battery_rsoc_available;
218
219 struct hotplug_slot hotplug_slot;
220 struct mutex hotplug_lock;
221 struct mutex wmi_lock;
222 struct workqueue_struct *hotplug_workqueue;
223 struct work_struct hotplug_work;
224
225 bool fnlock_locked;
226
227 struct asus_wmi_debug debug;
228
229 struct asus_wmi_driver *driver;
230};
231
232/* WMI ************************************************************************/
233
234static int asus_wmi_evaluate_method3(u32 method_id,
235 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
236{
237 struct bios_args args = {
238 .arg0 = arg0,
239 .arg1 = arg1,
240 .arg2 = arg2,
241 };
242 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
243 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
244 acpi_status status;
245 union acpi_object *obj;
246 u32 tmp = 0;
247
248 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
249 &input, &output);
250
251 if (ACPI_FAILURE(status))
252 return -EIO;
253
254 obj = (union acpi_object *)output.pointer;
255 if (obj && obj->type == ACPI_TYPE_INTEGER)
256 tmp = (u32) obj->integer.value;
257
258 if (retval)
259 *retval = tmp;
260
261 kfree(obj);
262
263 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
264 return -ENODEV;
265
266 return 0;
267}
268
269int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
270{
271 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
272}
273EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
274
275static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
276{
277 struct acpi_buffer input;
278 u64 phys_addr;
279 u32 retval;
280 u32 status;
281
282 /*
283 * Copy to dma capable address otherwise memory corruption occurs as
284 * bios has to be able to access it.
285 */
286 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
287 input.length = args.length;
288 if (!input.pointer)
289 return -ENOMEM;
290 phys_addr = virt_to_phys(input.pointer);
291
292 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
293 phys_addr, 0, &retval);
294 if (!status)
295 memcpy(args.pointer, input.pointer, args.length);
296
297 kfree(input.pointer);
298 if (status)
299 return -ENXIO;
300
301 return retval;
302}
303
304static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
305{
306 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
307}
308
309static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
310 u32 *retval)
311{
312 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
313 ctrl_param, retval);
314}
315
316/* Helper for special devices with magic return codes */
317static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
318 u32 dev_id, u32 mask)
319{
320 u32 retval = 0;
321 int err;
322
323 err = asus_wmi_get_devstate(asus, dev_id, &retval);
324 if (err < 0)
325 return err;
326
327 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
328 return -ENODEV;
329
330 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
331 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
332 return -ENODEV;
333 }
334
335 return retval & mask;
336}
337
338static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
339{
340 return asus_wmi_get_devstate_bits(asus, dev_id,
341 ASUS_WMI_DSTS_STATUS_BIT);
342}
343
344static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
345{
346 u32 retval;
347 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
348
349 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
350}
351
352/* Input **********************************************************************/
353
354static int asus_wmi_input_init(struct asus_wmi *asus)
355{
356 int err, result;
357
358 asus->inputdev = input_allocate_device();
359 if (!asus->inputdev)
360 return -ENOMEM;
361
362 asus->inputdev->name = asus->driver->input_name;
363 asus->inputdev->phys = asus->driver->input_phys;
364 asus->inputdev->id.bustype = BUS_HOST;
365 asus->inputdev->dev.parent = &asus->platform_device->dev;
366 set_bit(EV_REP, asus->inputdev->evbit);
367
368 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
369 if (err)
370 goto err_free_dev;
371
372 if (asus->driver->quirks->use_kbd_dock_devid) {
373 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
374 if (result >= 0) {
375 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
376 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
377 } else if (result != -ENODEV) {
378 pr_err("Error checking for keyboard-dock: %d\n", result);
379 }
380 }
381
382 if (asus->driver->quirks->use_lid_flip_devid) {
383 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
384 if (result < 0)
385 asus->driver->quirks->use_lid_flip_devid = 0;
386 if (result >= 0) {
387 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
388 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
389 } else if (result == -ENODEV) {
390 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug.");
391 } else {
392 pr_err("Error checking for lid-flip: %d\n", result);
393 }
394 }
395
396 err = input_register_device(asus->inputdev);
397 if (err)
398 goto err_free_dev;
399
400 return 0;
401
402err_free_dev:
403 input_free_device(asus->inputdev);
404 return err;
405}
406
407static void asus_wmi_input_exit(struct asus_wmi *asus)
408{
409 if (asus->inputdev)
410 input_unregister_device(asus->inputdev);
411
412 asus->inputdev = NULL;
413}
414
415/* Tablet mode ****************************************************************/
416
417static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus)
418{
419 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
420
421 if (result >= 0) {
422 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
423 input_sync(asus->inputdev);
424 }
425}
426
427/* Battery ********************************************************************/
428
429/* The battery maximum charging percentage */
430static int charge_end_threshold;
431
432static ssize_t charge_control_end_threshold_store(struct device *dev,
433 struct device_attribute *attr,
434 const char *buf, size_t count)
435{
436 int value, ret, rv;
437
438 ret = kstrtouint(buf, 10, &value);
439 if (ret)
440 return ret;
441
442 if (value < 0 || value > 100)
443 return -EINVAL;
444
445 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
446 if (ret)
447 return ret;
448
449 if (rv != 1)
450 return -EIO;
451
452 /* There isn't any method in the DSDT to read the threshold, so we
453 * save the threshold.
454 */
455 charge_end_threshold = value;
456 return count;
457}
458
459static ssize_t charge_control_end_threshold_show(struct device *device,
460 struct device_attribute *attr,
461 char *buf)
462{
463 return sprintf(buf, "%d\n", charge_end_threshold);
464}
465
466static DEVICE_ATTR_RW(charge_control_end_threshold);
467
468static int asus_wmi_battery_add(struct power_supply *battery)
469{
470 /* The WMI method does not provide a way to specific a battery, so we
471 * just assume it is the first battery.
472 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
473 * battery is named BATT.
474 */
475 if (strcmp(battery->desc->name, "BAT0") != 0 &&
476 strcmp(battery->desc->name, "BAT1") != 0 &&
477 strcmp(battery->desc->name, "BATC") != 0 &&
478 strcmp(battery->desc->name, "BATT") != 0)
479 return -ENODEV;
480
481 if (device_create_file(&battery->dev,
482 &dev_attr_charge_control_end_threshold))
483 return -ENODEV;
484
485 /* The charge threshold is only reset when the system is power cycled,
486 * and we can't get the current threshold so let set it to 100% when
487 * a battery is added.
488 */
489 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
490 charge_end_threshold = 100;
491
492 return 0;
493}
494
495static int asus_wmi_battery_remove(struct power_supply *battery)
496{
497 device_remove_file(&battery->dev,
498 &dev_attr_charge_control_end_threshold);
499 return 0;
500}
501
502static struct acpi_battery_hook battery_hook = {
503 .add_battery = asus_wmi_battery_add,
504 .remove_battery = asus_wmi_battery_remove,
505 .name = "ASUS Battery Extension",
506};
507
508static void asus_wmi_battery_init(struct asus_wmi *asus)
509{
510 asus->battery_rsoc_available = false;
511 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
512 asus->battery_rsoc_available = true;
513 battery_hook_register(&battery_hook);
514 }
515}
516
517static void asus_wmi_battery_exit(struct asus_wmi *asus)
518{
519 if (asus->battery_rsoc_available)
520 battery_hook_unregister(&battery_hook);
521}
522
523/* LEDs ***********************************************************************/
524
525/*
526 * These functions actually update the LED's, and are called from a
527 * workqueue. By doing this as separate work rather than when the LED
528 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
529 * potentially bad time, such as a timer interrupt.
530 */
531static void tpd_led_update(struct work_struct *work)
532{
533 int ctrl_param;
534 struct asus_wmi *asus;
535
536 asus = container_of(work, struct asus_wmi, tpd_led_work);
537
538 ctrl_param = asus->tpd_led_wk;
539 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
540}
541
542static void tpd_led_set(struct led_classdev *led_cdev,
543 enum led_brightness value)
544{
545 struct asus_wmi *asus;
546
547 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
548
549 asus->tpd_led_wk = !!value;
550 queue_work(asus->led_workqueue, &asus->tpd_led_work);
551}
552
553static int read_tpd_led_state(struct asus_wmi *asus)
554{
555 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
556}
557
558static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
559{
560 struct asus_wmi *asus;
561
562 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
563
564 return read_tpd_led_state(asus);
565}
566
567static void kbd_led_update(struct asus_wmi *asus)
568{
569 int ctrl_param = 0;
570
571 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
572 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
573}
574
575static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
576{
577 int retval;
578
579 /*
580 * bits 0-2: level
581 * bit 7: light on/off
582 * bit 8-10: environment (0: dark, 1: normal, 2: light)
583 * bit 17: status unknown
584 */
585 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
586 0xFFFF);
587
588 /* Unknown status is considered as off */
589 if (retval == 0x8000)
590 retval = 0;
591
592 if (retval < 0)
593 return retval;
594
595 if (level)
596 *level = retval & 0x7F;
597 if (env)
598 *env = (retval >> 8) & 0x7F;
599 return 0;
600}
601
602static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
603{
604 struct asus_wmi *asus;
605 int max_level;
606
607 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
608 max_level = asus->kbd_led.max_brightness;
609
610 asus->kbd_led_wk = clamp_val(value, 0, max_level);
611 kbd_led_update(asus);
612}
613
614static void kbd_led_set(struct led_classdev *led_cdev,
615 enum led_brightness value)
616{
617 /* Prevent disabling keyboard backlight on module unregister */
618 if (led_cdev->flags & LED_UNREGISTERING)
619 return;
620
621 do_kbd_led_set(led_cdev, value);
622}
623
624static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
625{
626 struct led_classdev *led_cdev = &asus->kbd_led;
627
628 do_kbd_led_set(led_cdev, value);
629 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
630}
631
632static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
633{
634 struct asus_wmi *asus;
635 int retval, value;
636
637 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
638
639 retval = kbd_led_read(asus, &value, NULL);
640 if (retval < 0)
641 return retval;
642
643 return value;
644}
645
646static int wlan_led_unknown_state(struct asus_wmi *asus)
647{
648 u32 result;
649
650 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
651
652 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
653}
654
655static void wlan_led_update(struct work_struct *work)
656{
657 int ctrl_param;
658 struct asus_wmi *asus;
659
660 asus = container_of(work, struct asus_wmi, wlan_led_work);
661
662 ctrl_param = asus->wlan_led_wk;
663 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
664}
665
666static void wlan_led_set(struct led_classdev *led_cdev,
667 enum led_brightness value)
668{
669 struct asus_wmi *asus;
670
671 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
672
673 asus->wlan_led_wk = !!value;
674 queue_work(asus->led_workqueue, &asus->wlan_led_work);
675}
676
677static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
678{
679 struct asus_wmi *asus;
680 u32 result;
681
682 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
683 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
684
685 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
686}
687
688static void lightbar_led_update(struct work_struct *work)
689{
690 struct asus_wmi *asus;
691 int ctrl_param;
692
693 asus = container_of(work, struct asus_wmi, lightbar_led_work);
694
695 ctrl_param = asus->lightbar_led_wk;
696 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
697}
698
699static void lightbar_led_set(struct led_classdev *led_cdev,
700 enum led_brightness value)
701{
702 struct asus_wmi *asus;
703
704 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
705
706 asus->lightbar_led_wk = !!value;
707 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
708}
709
710static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
711{
712 struct asus_wmi *asus;
713 u32 result;
714
715 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
716 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
717
718 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
719}
720
721static void asus_wmi_led_exit(struct asus_wmi *asus)
722{
723 led_classdev_unregister(&asus->kbd_led);
724 led_classdev_unregister(&asus->tpd_led);
725 led_classdev_unregister(&asus->wlan_led);
726 led_classdev_unregister(&asus->lightbar_led);
727
728 if (asus->led_workqueue)
729 destroy_workqueue(asus->led_workqueue);
730}
731
732static int asus_wmi_led_init(struct asus_wmi *asus)
733{
734 int rv = 0, led_val;
735
736 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
737 if (!asus->led_workqueue)
738 return -ENOMEM;
739
740 if (read_tpd_led_state(asus) >= 0) {
741 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
742
743 asus->tpd_led.name = "asus::touchpad";
744 asus->tpd_led.brightness_set = tpd_led_set;
745 asus->tpd_led.brightness_get = tpd_led_get;
746 asus->tpd_led.max_brightness = 1;
747
748 rv = led_classdev_register(&asus->platform_device->dev,
749 &asus->tpd_led);
750 if (rv)
751 goto error;
752 }
753
754 if (!kbd_led_read(asus, &led_val, NULL)) {
755 asus->kbd_led_wk = led_val;
756 asus->kbd_led.name = "asus::kbd_backlight";
757 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
758 asus->kbd_led.brightness_set = kbd_led_set;
759 asus->kbd_led.brightness_get = kbd_led_get;
760 asus->kbd_led.max_brightness = 3;
761
762 rv = led_classdev_register(&asus->platform_device->dev,
763 &asus->kbd_led);
764 if (rv)
765 goto error;
766 }
767
768 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
769 && (asus->driver->quirks->wapf > 0)) {
770 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
771
772 asus->wlan_led.name = "asus::wlan";
773 asus->wlan_led.brightness_set = wlan_led_set;
774 if (!wlan_led_unknown_state(asus))
775 asus->wlan_led.brightness_get = wlan_led_get;
776 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
777 asus->wlan_led.max_brightness = 1;
778 asus->wlan_led.default_trigger = "asus-wlan";
779
780 rv = led_classdev_register(&asus->platform_device->dev,
781 &asus->wlan_led);
782 if (rv)
783 goto error;
784 }
785
786 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
787 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
788
789 asus->lightbar_led.name = "asus::lightbar";
790 asus->lightbar_led.brightness_set = lightbar_led_set;
791 asus->lightbar_led.brightness_get = lightbar_led_get;
792 asus->lightbar_led.max_brightness = 1;
793
794 rv = led_classdev_register(&asus->platform_device->dev,
795 &asus->lightbar_led);
796 }
797
798error:
799 if (rv)
800 asus_wmi_led_exit(asus);
801
802 return rv;
803}
804
805/* RF *************************************************************************/
806
807/*
808 * PCI hotplug (for wlan rfkill)
809 */
810static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
811{
812 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
813
814 if (result < 0)
815 return false;
816 return !result;
817}
818
819static void asus_rfkill_hotplug(struct asus_wmi *asus)
820{
821 struct pci_dev *dev;
822 struct pci_bus *bus;
823 bool blocked;
824 bool absent;
825 u32 l;
826
827 mutex_lock(&asus->wmi_lock);
828 blocked = asus_wlan_rfkill_blocked(asus);
829 mutex_unlock(&asus->wmi_lock);
830
831 mutex_lock(&asus->hotplug_lock);
832 pci_lock_rescan_remove();
833
834 if (asus->wlan.rfkill)
835 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
836
837 if (asus->hotplug_slot.ops) {
838 bus = pci_find_bus(0, 1);
839 if (!bus) {
840 pr_warn("Unable to find PCI bus 1?\n");
841 goto out_unlock;
842 }
843
844 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
845 pr_err("Unable to read PCI config space?\n");
846 goto out_unlock;
847 }
848 absent = (l == 0xffffffff);
849
850 if (blocked != absent) {
851 pr_warn("BIOS says wireless lan is %s, "
852 "but the pci device is %s\n",
853 blocked ? "blocked" : "unblocked",
854 absent ? "absent" : "present");
855 pr_warn("skipped wireless hotplug as probably "
856 "inappropriate for this model\n");
857 goto out_unlock;
858 }
859
860 if (!blocked) {
861 dev = pci_get_slot(bus, 0);
862 if (dev) {
863 /* Device already present */
864 pci_dev_put(dev);
865 goto out_unlock;
866 }
867 dev = pci_scan_single_device(bus, 0);
868 if (dev) {
869 pci_bus_assign_resources(bus);
870 pci_bus_add_device(dev);
871 }
872 } else {
873 dev = pci_get_slot(bus, 0);
874 if (dev) {
875 pci_stop_and_remove_bus_device(dev);
876 pci_dev_put(dev);
877 }
878 }
879 }
880
881out_unlock:
882 pci_unlock_rescan_remove();
883 mutex_unlock(&asus->hotplug_lock);
884}
885
886static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
887{
888 struct asus_wmi *asus = data;
889
890 if (event != ACPI_NOTIFY_BUS_CHECK)
891 return;
892
893 /*
894 * We can't call directly asus_rfkill_hotplug because most
895 * of the time WMBC is still being executed and not reetrant.
896 * There is currently no way to tell ACPICA that we want this
897 * method to be serialized, we schedule a asus_rfkill_hotplug
898 * call later, in a safer context.
899 */
900 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
901}
902
903static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
904{
905 acpi_status status;
906 acpi_handle handle;
907
908 status = acpi_get_handle(NULL, node, &handle);
909 if (ACPI_FAILURE(status))
910 return -ENODEV;
911
912 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
913 asus_rfkill_notify, asus);
914 if (ACPI_FAILURE(status))
915 pr_warn("Failed to register notify on %s\n", node);
916
917 return 0;
918}
919
920static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
921{
922 acpi_status status = AE_OK;
923 acpi_handle handle;
924
925 status = acpi_get_handle(NULL, node, &handle);
926 if (ACPI_FAILURE(status))
927 return;
928
929 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
930 asus_rfkill_notify);
931 if (ACPI_FAILURE(status))
932 pr_err("Error removing rfkill notify handler %s\n", node);
933}
934
935static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
936 u8 *value)
937{
938 struct asus_wmi *asus = container_of(hotplug_slot,
939 struct asus_wmi, hotplug_slot);
940 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
941
942 if (result < 0)
943 return result;
944
945 *value = !!result;
946 return 0;
947}
948
949static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
950 .get_adapter_status = asus_get_adapter_status,
951 .get_power_status = asus_get_adapter_status,
952};
953
954static void asus_hotplug_work(struct work_struct *work)
955{
956 struct asus_wmi *asus;
957
958 asus = container_of(work, struct asus_wmi, hotplug_work);
959 asus_rfkill_hotplug(asus);
960}
961
962static int asus_setup_pci_hotplug(struct asus_wmi *asus)
963{
964 int ret = -ENOMEM;
965 struct pci_bus *bus = pci_find_bus(0, 1);
966
967 if (!bus) {
968 pr_err("Unable to find wifi PCI bus\n");
969 return -ENODEV;
970 }
971
972 asus->hotplug_workqueue =
973 create_singlethread_workqueue("hotplug_workqueue");
974 if (!asus->hotplug_workqueue)
975 goto error_workqueue;
976
977 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
978
979 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
980
981 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
982 if (ret) {
983 pr_err("Unable to register hotplug slot - %d\n", ret);
984 goto error_register;
985 }
986
987 return 0;
988
989error_register:
990 asus->hotplug_slot.ops = NULL;
991 destroy_workqueue(asus->hotplug_workqueue);
992error_workqueue:
993 return ret;
994}
995
996/*
997 * Rfkill devices
998 */
999static int asus_rfkill_set(void *data, bool blocked)
1000{
1001 struct asus_rfkill *priv = data;
1002 u32 ctrl_param = !blocked;
1003 u32 dev_id = priv->dev_id;
1004
1005 /*
1006 * If the user bit is set, BIOS can't set and record the wlan status,
1007 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
1008 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
1009 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
1010 * while setting the wlan status through WMI.
1011 * This is also the behavior that windows app will do.
1012 */
1013 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1014 priv->asus->driver->wlan_ctrl_by_user)
1015 dev_id = ASUS_WMI_DEVID_WLAN_LED;
1016
1017 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
1018}
1019
1020static void asus_rfkill_query(struct rfkill *rfkill, void *data)
1021{
1022 struct asus_rfkill *priv = data;
1023 int result;
1024
1025 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
1026
1027 if (result < 0)
1028 return;
1029
1030 rfkill_set_sw_state(priv->rfkill, !result);
1031}
1032
1033static int asus_rfkill_wlan_set(void *data, bool blocked)
1034{
1035 struct asus_rfkill *priv = data;
1036 struct asus_wmi *asus = priv->asus;
1037 int ret;
1038
1039 /*
1040 * This handler is enabled only if hotplug is enabled.
1041 * In this case, the asus_wmi_set_devstate() will
1042 * trigger a wmi notification and we need to wait
1043 * this call to finish before being able to call
1044 * any wmi method
1045 */
1046 mutex_lock(&asus->wmi_lock);
1047 ret = asus_rfkill_set(data, blocked);
1048 mutex_unlock(&asus->wmi_lock);
1049 return ret;
1050}
1051
1052static const struct rfkill_ops asus_rfkill_wlan_ops = {
1053 .set_block = asus_rfkill_wlan_set,
1054 .query = asus_rfkill_query,
1055};
1056
1057static const struct rfkill_ops asus_rfkill_ops = {
1058 .set_block = asus_rfkill_set,
1059 .query = asus_rfkill_query,
1060};
1061
1062static int asus_new_rfkill(struct asus_wmi *asus,
1063 struct asus_rfkill *arfkill,
1064 const char *name, enum rfkill_type type, int dev_id)
1065{
1066 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1067 struct rfkill **rfkill = &arfkill->rfkill;
1068
1069 if (result < 0)
1070 return result;
1071
1072 arfkill->dev_id = dev_id;
1073 arfkill->asus = asus;
1074
1075 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1076 asus->driver->quirks->hotplug_wireless)
1077 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1078 &asus_rfkill_wlan_ops, arfkill);
1079 else
1080 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1081 &asus_rfkill_ops, arfkill);
1082
1083 if (!*rfkill)
1084 return -EINVAL;
1085
1086 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1087 (asus->driver->quirks->wapf > 0))
1088 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1089
1090 rfkill_init_sw_state(*rfkill, !result);
1091 result = rfkill_register(*rfkill);
1092 if (result) {
1093 rfkill_destroy(*rfkill);
1094 *rfkill = NULL;
1095 return result;
1096 }
1097 return 0;
1098}
1099
1100static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1101{
1102 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1103 return;
1104
1105 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1106 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1107 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1108 if (asus->wlan.rfkill) {
1109 rfkill_unregister(asus->wlan.rfkill);
1110 rfkill_destroy(asus->wlan.rfkill);
1111 asus->wlan.rfkill = NULL;
1112 }
1113 /*
1114 * Refresh pci hotplug in case the rfkill state was changed after
1115 * asus_unregister_rfkill_notifier()
1116 */
1117 asus_rfkill_hotplug(asus);
1118 if (asus->hotplug_slot.ops)
1119 pci_hp_deregister(&asus->hotplug_slot);
1120 if (asus->hotplug_workqueue)
1121 destroy_workqueue(asus->hotplug_workqueue);
1122
1123 if (asus->bluetooth.rfkill) {
1124 rfkill_unregister(asus->bluetooth.rfkill);
1125 rfkill_destroy(asus->bluetooth.rfkill);
1126 asus->bluetooth.rfkill = NULL;
1127 }
1128 if (asus->wimax.rfkill) {
1129 rfkill_unregister(asus->wimax.rfkill);
1130 rfkill_destroy(asus->wimax.rfkill);
1131 asus->wimax.rfkill = NULL;
1132 }
1133 if (asus->wwan3g.rfkill) {
1134 rfkill_unregister(asus->wwan3g.rfkill);
1135 rfkill_destroy(asus->wwan3g.rfkill);
1136 asus->wwan3g.rfkill = NULL;
1137 }
1138 if (asus->gps.rfkill) {
1139 rfkill_unregister(asus->gps.rfkill);
1140 rfkill_destroy(asus->gps.rfkill);
1141 asus->gps.rfkill = NULL;
1142 }
1143 if (asus->uwb.rfkill) {
1144 rfkill_unregister(asus->uwb.rfkill);
1145 rfkill_destroy(asus->uwb.rfkill);
1146 asus->uwb.rfkill = NULL;
1147 }
1148}
1149
1150static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1151{
1152 int result = 0;
1153
1154 mutex_init(&asus->hotplug_lock);
1155 mutex_init(&asus->wmi_lock);
1156
1157 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1158 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1159
1160 if (result && result != -ENODEV)
1161 goto exit;
1162
1163 result = asus_new_rfkill(asus, &asus->bluetooth,
1164 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1165 ASUS_WMI_DEVID_BLUETOOTH);
1166
1167 if (result && result != -ENODEV)
1168 goto exit;
1169
1170 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1171 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1172
1173 if (result && result != -ENODEV)
1174 goto exit;
1175
1176 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1177 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1178
1179 if (result && result != -ENODEV)
1180 goto exit;
1181
1182 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1183 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1184
1185 if (result && result != -ENODEV)
1186 goto exit;
1187
1188 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1189 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1190
1191 if (result && result != -ENODEV)
1192 goto exit;
1193
1194 if (!asus->driver->quirks->hotplug_wireless)
1195 goto exit;
1196
1197 result = asus_setup_pci_hotplug(asus);
1198 /*
1199 * If we get -EBUSY then something else is handling the PCI hotplug -
1200 * don't fail in this case
1201 */
1202 if (result == -EBUSY)
1203 result = 0;
1204
1205 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1206 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1207 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1208 /*
1209 * Refresh pci hotplug in case the rfkill state was changed during
1210 * setup.
1211 */
1212 asus_rfkill_hotplug(asus);
1213
1214exit:
1215 if (result && result != -ENODEV)
1216 asus_wmi_rfkill_exit(asus);
1217
1218 if (result == -ENODEV)
1219 result = 0;
1220
1221 return result;
1222}
1223
1224/* Quirks *********************************************************************/
1225
1226static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1227{
1228 struct pci_dev *xhci_pdev;
1229 u32 orig_ports_available;
1230 u32 ports_available = asus->driver->quirks->xusb2pr;
1231
1232 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1233 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1234 NULL);
1235
1236 if (!xhci_pdev)
1237 return;
1238
1239 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1240 &orig_ports_available);
1241
1242 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1243 cpu_to_le32(ports_available));
1244
1245 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1246 orig_ports_available, ports_available);
1247}
1248
1249/*
1250 * Some devices dont support or have borcken get_als method
1251 * but still support set method.
1252 */
1253static void asus_wmi_set_als(void)
1254{
1255 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1256}
1257
1258/* Hwmon device ***************************************************************/
1259
1260static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1261 int *speed)
1262{
1263 struct agfn_fan_args args = {
1264 .agfn.len = sizeof(args),
1265 .agfn.mfun = ASUS_FAN_MFUN,
1266 .agfn.sfun = ASUS_FAN_SFUN_READ,
1267 .fan = fan,
1268 .speed = 0,
1269 };
1270 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1271 int status;
1272
1273 if (fan != 1)
1274 return -EINVAL;
1275
1276 status = asus_wmi_evaluate_method_agfn(input);
1277
1278 if (status || args.agfn.err)
1279 return -ENXIO;
1280
1281 if (speed)
1282 *speed = args.speed;
1283
1284 return 0;
1285}
1286
1287static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1288 int *speed)
1289{
1290 struct agfn_fan_args args = {
1291 .agfn.len = sizeof(args),
1292 .agfn.mfun = ASUS_FAN_MFUN,
1293 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1294 .fan = fan,
1295 .speed = speed ? *speed : 0,
1296 };
1297 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1298 int status;
1299
1300 /* 1: for setting 1st fan's speed 0: setting auto mode */
1301 if (fan != 1 && fan != 0)
1302 return -EINVAL;
1303
1304 status = asus_wmi_evaluate_method_agfn(input);
1305
1306 if (status || args.agfn.err)
1307 return -ENXIO;
1308
1309 if (speed && fan == 1)
1310 asus->agfn_pwm = *speed;
1311
1312 return 0;
1313}
1314
1315/*
1316 * Check if we can read the speed of one fan. If true we assume we can also
1317 * control it.
1318 */
1319static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1320{
1321 int status;
1322 int speed;
1323 u32 value;
1324
1325 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1326 if (status != 0)
1327 return false;
1328
1329 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1330 if (status != 0)
1331 return false;
1332
1333 /*
1334 * We need to find a better way, probably using sfun,
1335 * bits or spec ...
1336 * Currently we disable it if:
1337 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1338 * - reverved bits are non-zero
1339 * - sfun and presence bit are not set
1340 */
1341 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1342 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1343}
1344
1345static int asus_fan_set_auto(struct asus_wmi *asus)
1346{
1347 int status;
1348 u32 retval;
1349
1350 switch (asus->fan_type) {
1351 case FAN_TYPE_SPEC83:
1352 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1353 0, &retval);
1354 if (status)
1355 return status;
1356
1357 if (retval != 1)
1358 return -EIO;
1359 break;
1360
1361 case FAN_TYPE_AGFN:
1362 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1363 if (status)
1364 return -ENXIO;
1365 break;
1366
1367 default:
1368 return -ENXIO;
1369 }
1370
1371
1372 return 0;
1373}
1374
1375static ssize_t pwm1_show(struct device *dev,
1376 struct device_attribute *attr,
1377 char *buf)
1378{
1379 struct asus_wmi *asus = dev_get_drvdata(dev);
1380 int err;
1381 int value;
1382
1383 /* If we already set a value then just return it */
1384 if (asus->agfn_pwm >= 0)
1385 return sprintf(buf, "%d\n", asus->agfn_pwm);
1386
1387 /*
1388 * If we haven't set already set a value through the AGFN interface,
1389 * we read a current value through the (now-deprecated) FAN_CTRL device.
1390 */
1391 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1392 if (err < 0)
1393 return err;
1394
1395 value &= 0xFF;
1396
1397 if (value == 1) /* Low Speed */
1398 value = 85;
1399 else if (value == 2)
1400 value = 170;
1401 else if (value == 3)
1402 value = 255;
1403 else if (value) {
1404 pr_err("Unknown fan speed %#x\n", value);
1405 value = -1;
1406 }
1407
1408 return sprintf(buf, "%d\n", value);
1409}
1410
1411static ssize_t pwm1_store(struct device *dev,
1412 struct device_attribute *attr,
1413 const char *buf, size_t count) {
1414 struct asus_wmi *asus = dev_get_drvdata(dev);
1415 int value;
1416 int state;
1417 int ret;
1418
1419 ret = kstrtouint(buf, 10, &value);
1420 if (ret)
1421 return ret;
1422
1423 value = clamp(value, 0, 255);
1424
1425 state = asus_agfn_fan_speed_write(asus, 1, &value);
1426 if (state)
1427 pr_warn("Setting fan speed failed: %d\n", state);
1428 else
1429 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1430
1431 return count;
1432}
1433
1434static ssize_t fan1_input_show(struct device *dev,
1435 struct device_attribute *attr,
1436 char *buf)
1437{
1438 struct asus_wmi *asus = dev_get_drvdata(dev);
1439 int value;
1440 int ret;
1441
1442 switch (asus->fan_type) {
1443 case FAN_TYPE_SPEC83:
1444 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1445 &value);
1446 if (ret < 0)
1447 return ret;
1448
1449 value &= 0xffff;
1450 break;
1451
1452 case FAN_TYPE_AGFN:
1453 /* no speed readable on manual mode */
1454 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1455 return -ENXIO;
1456
1457 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1458 if (ret) {
1459 pr_warn("reading fan speed failed: %d\n", ret);
1460 return -ENXIO;
1461 }
1462 break;
1463
1464 default:
1465 return -ENXIO;
1466 }
1467
1468 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1469}
1470
1471static ssize_t pwm1_enable_show(struct device *dev,
1472 struct device_attribute *attr,
1473 char *buf)
1474{
1475 struct asus_wmi *asus = dev_get_drvdata(dev);
1476
1477 /*
1478 * Just read back the cached pwm mode.
1479 *
1480 * For the CPU_FAN device, the spec indicates that we should be
1481 * able to read the device status and consult bit 19 to see if we
1482 * are in Full On or Automatic mode. However, this does not work
1483 * in practice on X532FL at least (the bit is always 0) and there's
1484 * also nothing in the DSDT to indicate that this behaviour exists.
1485 */
1486 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1487}
1488
1489static ssize_t pwm1_enable_store(struct device *dev,
1490 struct device_attribute *attr,
1491 const char *buf, size_t count)
1492{
1493 struct asus_wmi *asus = dev_get_drvdata(dev);
1494 int status = 0;
1495 int state;
1496 int value;
1497 int ret;
1498 u32 retval;
1499
1500 ret = kstrtouint(buf, 10, &state);
1501 if (ret)
1502 return ret;
1503
1504 if (asus->fan_type == FAN_TYPE_SPEC83) {
1505 switch (state) { /* standard documented hwmon values */
1506 case ASUS_FAN_CTRL_FULLSPEED:
1507 value = 1;
1508 break;
1509 case ASUS_FAN_CTRL_AUTO:
1510 value = 0;
1511 break;
1512 default:
1513 return -EINVAL;
1514 }
1515
1516 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1517 value, &retval);
1518 if (ret)
1519 return ret;
1520
1521 if (retval != 1)
1522 return -EIO;
1523 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1524 switch (state) {
1525 case ASUS_FAN_CTRL_MANUAL:
1526 break;
1527
1528 case ASUS_FAN_CTRL_AUTO:
1529 status = asus_fan_set_auto(asus);
1530 if (status)
1531 return status;
1532 break;
1533
1534 default:
1535 return -EINVAL;
1536 }
1537 }
1538
1539 asus->fan_pwm_mode = state;
1540 return count;
1541}
1542
1543static ssize_t fan1_label_show(struct device *dev,
1544 struct device_attribute *attr,
1545 char *buf)
1546{
1547 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1548}
1549
1550static ssize_t asus_hwmon_temp1(struct device *dev,
1551 struct device_attribute *attr,
1552 char *buf)
1553{
1554 struct asus_wmi *asus = dev_get_drvdata(dev);
1555 u32 value;
1556 int err;
1557
1558 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1559 if (err < 0)
1560 return err;
1561
1562 return sprintf(buf, "%ld\n",
1563 deci_kelvin_to_millicelsius(value & 0xFFFF));
1564}
1565
1566/* Fan1 */
1567static DEVICE_ATTR_RW(pwm1);
1568static DEVICE_ATTR_RW(pwm1_enable);
1569static DEVICE_ATTR_RO(fan1_input);
1570static DEVICE_ATTR_RO(fan1_label);
1571
1572/* Temperature */
1573static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1574
1575static struct attribute *hwmon_attributes[] = {
1576 &dev_attr_pwm1.attr,
1577 &dev_attr_pwm1_enable.attr,
1578 &dev_attr_fan1_input.attr,
1579 &dev_attr_fan1_label.attr,
1580
1581 &dev_attr_temp1_input.attr,
1582 NULL
1583};
1584
1585static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1586 struct attribute *attr, int idx)
1587{
1588 struct device *dev = container_of(kobj, struct device, kobj);
1589 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1590 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1591
1592 if (attr == &dev_attr_pwm1.attr) {
1593 if (asus->fan_type != FAN_TYPE_AGFN)
1594 return 0;
1595 } else if (attr == &dev_attr_fan1_input.attr
1596 || attr == &dev_attr_fan1_label.attr
1597 || attr == &dev_attr_pwm1_enable.attr) {
1598 if (asus->fan_type == FAN_TYPE_NONE)
1599 return 0;
1600 } else if (attr == &dev_attr_temp1_input.attr) {
1601 int err = asus_wmi_get_devstate(asus,
1602 ASUS_WMI_DEVID_THERMAL_CTRL,
1603 &value);
1604
1605 if (err < 0)
1606 return 0; /* can't return negative here */
1607
1608 /*
1609 * If the temperature value in deci-Kelvin is near the absolute
1610 * zero temperature, something is clearly wrong
1611 */
1612 if (value == 0 || value == 1)
1613 return 0;
1614 }
1615
1616 return attr->mode;
1617}
1618
1619static const struct attribute_group hwmon_attribute_group = {
1620 .is_visible = asus_hwmon_sysfs_is_visible,
1621 .attrs = hwmon_attributes
1622};
1623__ATTRIBUTE_GROUPS(hwmon_attribute);
1624
1625static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1626{
1627 struct device *dev = &asus->platform_device->dev;
1628 struct device *hwmon;
1629
1630 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1631 hwmon_attribute_groups);
1632
1633 if (IS_ERR(hwmon)) {
1634 pr_err("Could not register asus hwmon device\n");
1635 return PTR_ERR(hwmon);
1636 }
1637 return 0;
1638}
1639
1640static int asus_wmi_fan_init(struct asus_wmi *asus)
1641{
1642 asus->fan_type = FAN_TYPE_NONE;
1643 asus->agfn_pwm = -1;
1644
1645 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1646 asus->fan_type = FAN_TYPE_SPEC83;
1647 else if (asus_wmi_has_agfn_fan(asus))
1648 asus->fan_type = FAN_TYPE_AGFN;
1649
1650 if (asus->fan_type == FAN_TYPE_NONE)
1651 return -ENODEV;
1652
1653 asus_fan_set_auto(asus);
1654 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1655 return 0;
1656}
1657
1658/* Fan mode *******************************************************************/
1659
1660static int fan_boost_mode_check_present(struct asus_wmi *asus)
1661{
1662 u32 result;
1663 int err;
1664
1665 asus->fan_boost_mode_available = false;
1666
1667 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1668 &result);
1669 if (err) {
1670 if (err == -ENODEV)
1671 return 0;
1672 else
1673 return err;
1674 }
1675
1676 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1677 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1678 asus->fan_boost_mode_available = true;
1679 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1680 }
1681
1682 return 0;
1683}
1684
1685static int fan_boost_mode_write(struct asus_wmi *asus)
1686{
1687 int err;
1688 u8 value;
1689 u32 retval;
1690
1691 value = asus->fan_boost_mode;
1692
1693 pr_info("Set fan boost mode: %u\n", value);
1694 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1695 &retval);
1696
1697 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
1698 "fan_boost_mode");
1699
1700 if (err) {
1701 pr_warn("Failed to set fan boost mode: %d\n", err);
1702 return err;
1703 }
1704
1705 if (retval != 1) {
1706 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1707 retval);
1708 return -EIO;
1709 }
1710
1711 return 0;
1712}
1713
1714static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1715{
1716 u8 mask = asus->fan_boost_mode_mask;
1717
1718 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1719 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1720 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1721 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1722 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1723 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1724 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1725 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1726 else
1727 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1728 } else {
1729 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1730 }
1731
1732 return fan_boost_mode_write(asus);
1733}
1734
1735static ssize_t fan_boost_mode_show(struct device *dev,
1736 struct device_attribute *attr, char *buf)
1737{
1738 struct asus_wmi *asus = dev_get_drvdata(dev);
1739
1740 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1741}
1742
1743static ssize_t fan_boost_mode_store(struct device *dev,
1744 struct device_attribute *attr,
1745 const char *buf, size_t count)
1746{
1747 int result;
1748 u8 new_mode;
1749 struct asus_wmi *asus = dev_get_drvdata(dev);
1750 u8 mask = asus->fan_boost_mode_mask;
1751
1752 result = kstrtou8(buf, 10, &new_mode);
1753 if (result < 0) {
1754 pr_warn("Trying to store invalid value\n");
1755 return result;
1756 }
1757
1758 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1759 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1760 return -EINVAL;
1761 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1762 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1763 return -EINVAL;
1764 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1765 return -EINVAL;
1766 }
1767
1768 asus->fan_boost_mode = new_mode;
1769 fan_boost_mode_write(asus);
1770
1771 return count;
1772}
1773
1774// Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1775static DEVICE_ATTR_RW(fan_boost_mode);
1776
1777/* Throttle thermal policy ****************************************************/
1778
1779static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
1780{
1781 u32 result;
1782 int err;
1783
1784 asus->throttle_thermal_policy_available = false;
1785
1786 err = asus_wmi_get_devstate(asus,
1787 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1788 &result);
1789 if (err) {
1790 if (err == -ENODEV)
1791 return 0;
1792 return err;
1793 }
1794
1795 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
1796 asus->throttle_thermal_policy_available = true;
1797
1798 return 0;
1799}
1800
1801static int throttle_thermal_policy_write(struct asus_wmi *asus)
1802{
1803 int err;
1804 u8 value;
1805 u32 retval;
1806
1807 value = asus->throttle_thermal_policy_mode;
1808
1809 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1810 value, &retval);
1811
1812 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
1813 "throttle_thermal_policy");
1814
1815 if (err) {
1816 pr_warn("Failed to set throttle thermal policy: %d\n", err);
1817 return err;
1818 }
1819
1820 if (retval != 1) {
1821 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
1822 retval);
1823 return -EIO;
1824 }
1825
1826 return 0;
1827}
1828
1829static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
1830{
1831 if (!asus->throttle_thermal_policy_available)
1832 return 0;
1833
1834 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1835 return throttle_thermal_policy_write(asus);
1836}
1837
1838static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
1839{
1840 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
1841
1842 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1843 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1844
1845 asus->throttle_thermal_policy_mode = new_mode;
1846 return throttle_thermal_policy_write(asus);
1847}
1848
1849static ssize_t throttle_thermal_policy_show(struct device *dev,
1850 struct device_attribute *attr, char *buf)
1851{
1852 struct asus_wmi *asus = dev_get_drvdata(dev);
1853 u8 mode = asus->throttle_thermal_policy_mode;
1854
1855 return scnprintf(buf, PAGE_SIZE, "%d\n", mode);
1856}
1857
1858static ssize_t throttle_thermal_policy_store(struct device *dev,
1859 struct device_attribute *attr,
1860 const char *buf, size_t count)
1861{
1862 int result;
1863 u8 new_mode;
1864 struct asus_wmi *asus = dev_get_drvdata(dev);
1865
1866 result = kstrtou8(buf, 10, &new_mode);
1867 if (result < 0)
1868 return result;
1869
1870 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1871 return -EINVAL;
1872
1873 asus->throttle_thermal_policy_mode = new_mode;
1874 throttle_thermal_policy_write(asus);
1875
1876 return count;
1877}
1878
1879// Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
1880static DEVICE_ATTR_RW(throttle_thermal_policy);
1881
1882/* Backlight ******************************************************************/
1883
1884static int read_backlight_power(struct asus_wmi *asus)
1885{
1886 int ret;
1887
1888 if (asus->driver->quirks->store_backlight_power)
1889 ret = !asus->driver->panel_power;
1890 else
1891 ret = asus_wmi_get_devstate_simple(asus,
1892 ASUS_WMI_DEVID_BACKLIGHT);
1893
1894 if (ret < 0)
1895 return ret;
1896
1897 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1898}
1899
1900static int read_brightness_max(struct asus_wmi *asus)
1901{
1902 u32 retval;
1903 int err;
1904
1905 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1906 if (err < 0)
1907 return err;
1908
1909 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1910 retval >>= 8;
1911
1912 if (!retval)
1913 return -ENODEV;
1914
1915 return retval;
1916}
1917
1918static int read_brightness(struct backlight_device *bd)
1919{
1920 struct asus_wmi *asus = bl_get_data(bd);
1921 u32 retval;
1922 int err;
1923
1924 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1925 if (err < 0)
1926 return err;
1927
1928 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1929}
1930
1931static u32 get_scalar_command(struct backlight_device *bd)
1932{
1933 struct asus_wmi *asus = bl_get_data(bd);
1934 u32 ctrl_param = 0;
1935
1936 if ((asus->driver->brightness < bd->props.brightness) ||
1937 bd->props.brightness == bd->props.max_brightness)
1938 ctrl_param = 0x00008001;
1939 else if ((asus->driver->brightness > bd->props.brightness) ||
1940 bd->props.brightness == 0)
1941 ctrl_param = 0x00008000;
1942
1943 asus->driver->brightness = bd->props.brightness;
1944
1945 return ctrl_param;
1946}
1947
1948static int update_bl_status(struct backlight_device *bd)
1949{
1950 struct asus_wmi *asus = bl_get_data(bd);
1951 u32 ctrl_param;
1952 int power, err = 0;
1953
1954 power = read_backlight_power(asus);
1955 if (power != -ENODEV && bd->props.power != power) {
1956 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1957 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1958 ctrl_param, NULL);
1959 if (asus->driver->quirks->store_backlight_power)
1960 asus->driver->panel_power = bd->props.power;
1961
1962 /* When using scalar brightness, updating the brightness
1963 * will mess with the backlight power */
1964 if (asus->driver->quirks->scalar_panel_brightness)
1965 return err;
1966 }
1967
1968 if (asus->driver->quirks->scalar_panel_brightness)
1969 ctrl_param = get_scalar_command(bd);
1970 else
1971 ctrl_param = bd->props.brightness;
1972
1973 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1974 ctrl_param, NULL);
1975
1976 return err;
1977}
1978
1979static const struct backlight_ops asus_wmi_bl_ops = {
1980 .get_brightness = read_brightness,
1981 .update_status = update_bl_status,
1982};
1983
1984static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1985{
1986 struct backlight_device *bd = asus->backlight_device;
1987 int old = bd->props.brightness;
1988 int new = old;
1989
1990 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1991 new = code - NOTIFY_BRNUP_MIN + 1;
1992 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1993 new = code - NOTIFY_BRNDOWN_MIN;
1994
1995 bd->props.brightness = new;
1996 backlight_update_status(bd);
1997 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1998
1999 return old;
2000}
2001
2002static int asus_wmi_backlight_init(struct asus_wmi *asus)
2003{
2004 struct backlight_device *bd;
2005 struct backlight_properties props;
2006 int max;
2007 int power;
2008
2009 max = read_brightness_max(asus);
2010 if (max < 0)
2011 return max;
2012
2013 power = read_backlight_power(asus);
2014 if (power == -ENODEV)
2015 power = FB_BLANK_UNBLANK;
2016 else if (power < 0)
2017 return power;
2018
2019 memset(&props, 0, sizeof(struct backlight_properties));
2020 props.type = BACKLIGHT_PLATFORM;
2021 props.max_brightness = max;
2022 bd = backlight_device_register(asus->driver->name,
2023 &asus->platform_device->dev, asus,
2024 &asus_wmi_bl_ops, &props);
2025 if (IS_ERR(bd)) {
2026 pr_err("Could not register backlight device\n");
2027 return PTR_ERR(bd);
2028 }
2029
2030 asus->backlight_device = bd;
2031
2032 if (asus->driver->quirks->store_backlight_power)
2033 asus->driver->panel_power = power;
2034
2035 bd->props.brightness = read_brightness(bd);
2036 bd->props.power = power;
2037 backlight_update_status(bd);
2038
2039 asus->driver->brightness = bd->props.brightness;
2040
2041 return 0;
2042}
2043
2044static void asus_wmi_backlight_exit(struct asus_wmi *asus)
2045{
2046 backlight_device_unregister(asus->backlight_device);
2047
2048 asus->backlight_device = NULL;
2049}
2050
2051static int is_display_toggle(int code)
2052{
2053 /* display toggle keys */
2054 if ((code >= 0x61 && code <= 0x67) ||
2055 (code >= 0x8c && code <= 0x93) ||
2056 (code >= 0xa0 && code <= 0xa7) ||
2057 (code >= 0xd0 && code <= 0xd5))
2058 return 1;
2059
2060 return 0;
2061}
2062
2063/* Fn-lock ********************************************************************/
2064
2065static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
2066{
2067 u32 result;
2068
2069 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
2070
2071 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2072 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
2073}
2074
2075static void asus_wmi_fnlock_update(struct asus_wmi *asus)
2076{
2077 int mode = asus->fnlock_locked;
2078
2079 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
2080}
2081
2082/* WMI events *****************************************************************/
2083
2084static int asus_wmi_get_event_code(u32 value)
2085{
2086 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
2087 union acpi_object *obj;
2088 acpi_status status;
2089 int code;
2090
2091 status = wmi_get_event_data(value, &response);
2092 if (ACPI_FAILURE(status)) {
2093 pr_warn("Failed to get WMI notify code: %s\n",
2094 acpi_format_exception(status));
2095 return -EIO;
2096 }
2097
2098 obj = (union acpi_object *)response.pointer;
2099
2100 if (obj && obj->type == ACPI_TYPE_INTEGER)
2101 code = (int)(obj->integer.value & WMI_EVENT_MASK);
2102 else
2103 code = -EIO;
2104
2105 kfree(obj);
2106 return code;
2107}
2108
2109static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
2110{
2111 unsigned int key_value = 1;
2112 bool autorelease = 1;
2113 int result, orig_code;
2114
2115 orig_code = code;
2116
2117 if (asus->driver->key_filter) {
2118 asus->driver->key_filter(asus->driver, &code, &key_value,
2119 &autorelease);
2120 if (code == ASUS_WMI_KEY_IGNORE)
2121 return;
2122 }
2123
2124 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
2125 code = ASUS_WMI_BRN_UP;
2126 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
2127 code = ASUS_WMI_BRN_DOWN;
2128
2129 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
2130 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2131 asus_wmi_backlight_notify(asus, orig_code);
2132 return;
2133 }
2134 }
2135
2136 if (code == NOTIFY_KBD_BRTUP) {
2137 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2138 return;
2139 }
2140 if (code == NOTIFY_KBD_BRTDWN) {
2141 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
2142 return;
2143 }
2144 if (code == NOTIFY_KBD_BRTTOGGLE) {
2145 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
2146 kbd_led_set_by_kbd(asus, 0);
2147 else
2148 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2149 return;
2150 }
2151
2152 if (code == NOTIFY_FNLOCK_TOGGLE) {
2153 asus->fnlock_locked = !asus->fnlock_locked;
2154 asus_wmi_fnlock_update(asus);
2155 return;
2156 }
2157
2158 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
2159 result = asus_wmi_get_devstate_simple(asus,
2160 ASUS_WMI_DEVID_KBD_DOCK);
2161 if (result >= 0) {
2162 input_report_switch(asus->inputdev, SW_TABLET_MODE,
2163 !result);
2164 input_sync(asus->inputdev);
2165 }
2166 return;
2167 }
2168
2169 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) {
2170 lid_flip_tablet_mode_get_state(asus);
2171 return;
2172 }
2173
2174 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2175 fan_boost_mode_switch_next(asus);
2176 return;
2177 }
2178
2179 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) {
2180 throttle_thermal_policy_switch_next(asus);
2181 return;
2182 }
2183
2184 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2185 return;
2186
2187 if (!sparse_keymap_report_event(asus->inputdev, code,
2188 key_value, autorelease))
2189 pr_info("Unknown key %x pressed\n", code);
2190}
2191
2192static void asus_wmi_notify(u32 value, void *context)
2193{
2194 struct asus_wmi *asus = context;
2195 int code;
2196 int i;
2197
2198 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2199 code = asus_wmi_get_event_code(value);
2200 if (code < 0) {
2201 pr_warn("Failed to get notify code: %d\n", code);
2202 return;
2203 }
2204
2205 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2206 return;
2207
2208 asus_wmi_handle_event_code(code, asus);
2209
2210 /*
2211 * Double check that queue is present:
2212 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2213 */
2214 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2215 return;
2216 }
2217
2218 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2219}
2220
2221static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2222{
2223 int code;
2224 int i;
2225
2226 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2227 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2228 if (code < 0) {
2229 pr_warn("Failed to get event during flush: %d\n", code);
2230 return code;
2231 }
2232
2233 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2234 return 0;
2235 }
2236
2237 pr_warn("Failed to flush event queue\n");
2238 return -EIO;
2239}
2240
2241/* Sysfs **********************************************************************/
2242
2243static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2244 const char *buf, size_t count)
2245{
2246 u32 retval;
2247 int err, value;
2248
2249 value = asus_wmi_get_devstate_simple(asus, devid);
2250 if (value < 0)
2251 return value;
2252
2253 err = kstrtoint(buf, 0, &value);
2254 if (err)
2255 return err;
2256
2257 err = asus_wmi_set_devstate(devid, value, &retval);
2258 if (err < 0)
2259 return err;
2260
2261 return count;
2262}
2263
2264static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2265{
2266 int value = asus_wmi_get_devstate_simple(asus, devid);
2267
2268 if (value < 0)
2269 return value;
2270
2271 return sprintf(buf, "%d\n", value);
2272}
2273
2274#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2275 static ssize_t show_##_name(struct device *dev, \
2276 struct device_attribute *attr, \
2277 char *buf) \
2278 { \
2279 struct asus_wmi *asus = dev_get_drvdata(dev); \
2280 \
2281 return show_sys_wmi(asus, _cm, buf); \
2282 } \
2283 static ssize_t store_##_name(struct device *dev, \
2284 struct device_attribute *attr, \
2285 const char *buf, size_t count) \
2286 { \
2287 struct asus_wmi *asus = dev_get_drvdata(dev); \
2288 \
2289 return store_sys_wmi(asus, _cm, buf, count); \
2290 } \
2291 static struct device_attribute dev_attr_##_name = { \
2292 .attr = { \
2293 .name = __stringify(_name), \
2294 .mode = _mode }, \
2295 .show = show_##_name, \
2296 .store = store_##_name, \
2297 }
2298
2299ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2300ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2301ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2302ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2303ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2304
2305static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2306 const char *buf, size_t count)
2307{
2308 int value, rv;
2309
2310 rv = kstrtoint(buf, 0, &value);
2311 if (rv)
2312 return rv;
2313
2314 if (value < 0 || value > 2)
2315 return -EINVAL;
2316
2317 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2318 if (rv < 0)
2319 return rv;
2320
2321 return count;
2322}
2323
2324static DEVICE_ATTR_WO(cpufv);
2325
2326static struct attribute *platform_attributes[] = {
2327 &dev_attr_cpufv.attr,
2328 &dev_attr_camera.attr,
2329 &dev_attr_cardr.attr,
2330 &dev_attr_touchpad.attr,
2331 &dev_attr_lid_resume.attr,
2332 &dev_attr_als_enable.attr,
2333 &dev_attr_fan_boost_mode.attr,
2334 &dev_attr_throttle_thermal_policy.attr,
2335 NULL
2336};
2337
2338static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2339 struct attribute *attr, int idx)
2340{
2341 struct device *dev = container_of(kobj, struct device, kobj);
2342 struct asus_wmi *asus = dev_get_drvdata(dev);
2343 bool ok = true;
2344 int devid = -1;
2345
2346 if (attr == &dev_attr_camera.attr)
2347 devid = ASUS_WMI_DEVID_CAMERA;
2348 else if (attr == &dev_attr_cardr.attr)
2349 devid = ASUS_WMI_DEVID_CARDREADER;
2350 else if (attr == &dev_attr_touchpad.attr)
2351 devid = ASUS_WMI_DEVID_TOUCHPAD;
2352 else if (attr == &dev_attr_lid_resume.attr)
2353 devid = ASUS_WMI_DEVID_LID_RESUME;
2354 else if (attr == &dev_attr_als_enable.attr)
2355 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2356 else if (attr == &dev_attr_fan_boost_mode.attr)
2357 ok = asus->fan_boost_mode_available;
2358 else if (attr == &dev_attr_throttle_thermal_policy.attr)
2359 ok = asus->throttle_thermal_policy_available;
2360
2361 if (devid != -1)
2362 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2363
2364 return ok ? attr->mode : 0;
2365}
2366
2367static const struct attribute_group platform_attribute_group = {
2368 .is_visible = asus_sysfs_is_visible,
2369 .attrs = platform_attributes
2370};
2371
2372static void asus_wmi_sysfs_exit(struct platform_device *device)
2373{
2374 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2375}
2376
2377static int asus_wmi_sysfs_init(struct platform_device *device)
2378{
2379 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2380}
2381
2382/* Platform device ************************************************************/
2383
2384static int asus_wmi_platform_init(struct asus_wmi *asus)
2385{
2386 struct device *dev = &asus->platform_device->dev;
2387 char *wmi_uid;
2388 int rv;
2389
2390 /* INIT enable hotkeys on some models */
2391 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2392 pr_info("Initialization: %#x\n", rv);
2393
2394 /* We don't know yet what to do with this version... */
2395 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2396 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2397 asus->spec = rv;
2398 }
2399
2400 /*
2401 * The SFUN method probably allows the original driver to get the list
2402 * of features supported by a given model. For now, 0x0100 or 0x0800
2403 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2404 * The significance of others is yet to be found.
2405 */
2406 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2407 pr_info("SFUN value: %#x\n", rv);
2408 asus->sfun = rv;
2409 }
2410
2411 /*
2412 * Eee PC and Notebooks seems to have different method_id for DSTS,
2413 * but it may also be related to the BIOS's SPEC.
2414 * Note, on most Eeepc, there is no way to check if a method exist
2415 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2416 * but once again, SPEC may probably be used for that kind of things.
2417 *
2418 * Additionally at least TUF Gaming series laptops return nothing for
2419 * unknown methods, so the detection in this way is not possible.
2420 *
2421 * There is strong indication that only ACPI WMI devices that have _UID
2422 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2423 */
2424 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2425 if (!wmi_uid)
2426 return -ENODEV;
2427
2428 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2429 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2430 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2431 } else {
2432 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2433 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2434 }
2435
2436 /*
2437 * Some devices can have multiple event codes stored in a queue before
2438 * the module load if it was unloaded intermittently after calling
2439 * the INIT method (enables event handling). The WMI notify handler is
2440 * expected to retrieve all event codes until a retrieved code equals
2441 * queue end marker (One or Ones). Old codes are flushed from the queue
2442 * upon module load. Not enabling this when it should be has minimal
2443 * visible impact so fall back if anything goes wrong.
2444 */
2445 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2446 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2447 dev_info(dev, "Detected ATK, enable event queue\n");
2448
2449 if (!asus_wmi_notify_queue_flush(asus))
2450 asus->wmi_event_queue = true;
2451 }
2452
2453 /* CWAP allow to define the behavior of the Fn+F2 key,
2454 * this method doesn't seems to be present on Eee PCs */
2455 if (asus->driver->quirks->wapf >= 0)
2456 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2457 asus->driver->quirks->wapf, NULL);
2458
2459 return 0;
2460}
2461
2462/* debugfs ********************************************************************/
2463
2464struct asus_wmi_debugfs_node {
2465 struct asus_wmi *asus;
2466 char *name;
2467 int (*show) (struct seq_file *m, void *data);
2468};
2469
2470static int show_dsts(struct seq_file *m, void *data)
2471{
2472 struct asus_wmi *asus = m->private;
2473 int err;
2474 u32 retval = -1;
2475
2476 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2477 if (err < 0)
2478 return err;
2479
2480 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2481
2482 return 0;
2483}
2484
2485static int show_devs(struct seq_file *m, void *data)
2486{
2487 struct asus_wmi *asus = m->private;
2488 int err;
2489 u32 retval = -1;
2490
2491 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2492 &retval);
2493 if (err < 0)
2494 return err;
2495
2496 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2497 asus->debug.ctrl_param, retval);
2498
2499 return 0;
2500}
2501
2502static int show_call(struct seq_file *m, void *data)
2503{
2504 struct asus_wmi *asus = m->private;
2505 struct bios_args args = {
2506 .arg0 = asus->debug.dev_id,
2507 .arg1 = asus->debug.ctrl_param,
2508 };
2509 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2510 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2511 union acpi_object *obj;
2512 acpi_status status;
2513
2514 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2515 0, asus->debug.method_id,
2516 &input, &output);
2517
2518 if (ACPI_FAILURE(status))
2519 return -EIO;
2520
2521 obj = (union acpi_object *)output.pointer;
2522 if (obj && obj->type == ACPI_TYPE_INTEGER)
2523 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2524 asus->debug.dev_id, asus->debug.ctrl_param,
2525 (u32) obj->integer.value);
2526 else
2527 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2528 asus->debug.dev_id, asus->debug.ctrl_param,
2529 obj ? obj->type : -1);
2530
2531 kfree(obj);
2532
2533 return 0;
2534}
2535
2536static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2537 {NULL, "devs", show_devs},
2538 {NULL, "dsts", show_dsts},
2539 {NULL, "call", show_call},
2540};
2541
2542static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2543{
2544 struct asus_wmi_debugfs_node *node = inode->i_private;
2545
2546 return single_open(file, node->show, node->asus);
2547}
2548
2549static const struct file_operations asus_wmi_debugfs_io_ops = {
2550 .owner = THIS_MODULE,
2551 .open = asus_wmi_debugfs_open,
2552 .read = seq_read,
2553 .llseek = seq_lseek,
2554 .release = single_release,
2555};
2556
2557static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2558{
2559 debugfs_remove_recursive(asus->debug.root);
2560}
2561
2562static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2563{
2564 int i;
2565
2566 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2567
2568 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2569 &asus->debug.method_id);
2570
2571 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2572 &asus->debug.dev_id);
2573
2574 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2575 &asus->debug.ctrl_param);
2576
2577 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2578 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2579
2580 node->asus = asus;
2581 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2582 asus->debug.root, node,
2583 &asus_wmi_debugfs_io_ops);
2584 }
2585}
2586
2587/* Init / exit ****************************************************************/
2588
2589static int asus_wmi_add(struct platform_device *pdev)
2590{
2591 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2592 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2593 struct asus_wmi *asus;
2594 const char *chassis_type;
2595 acpi_status status;
2596 int err;
2597 u32 result;
2598
2599 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2600 if (!asus)
2601 return -ENOMEM;
2602
2603 asus->driver = wdrv;
2604 asus->platform_device = pdev;
2605 wdrv->platform_device = pdev;
2606 platform_set_drvdata(asus->platform_device, asus);
2607
2608 if (wdrv->detect_quirks)
2609 wdrv->detect_quirks(asus->driver);
2610
2611 err = asus_wmi_platform_init(asus);
2612 if (err)
2613 goto fail_platform;
2614
2615 err = fan_boost_mode_check_present(asus);
2616 if (err)
2617 goto fail_fan_boost_mode;
2618
2619 err = throttle_thermal_policy_check_present(asus);
2620 if (err)
2621 goto fail_throttle_thermal_policy;
2622 else
2623 throttle_thermal_policy_set_default(asus);
2624
2625 err = asus_wmi_sysfs_init(asus->platform_device);
2626 if (err)
2627 goto fail_sysfs;
2628
2629 err = asus_wmi_input_init(asus);
2630 if (err)
2631 goto fail_input;
2632
2633 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2634
2635 err = asus_wmi_hwmon_init(asus);
2636 if (err)
2637 goto fail_hwmon;
2638
2639 err = asus_wmi_led_init(asus);
2640 if (err)
2641 goto fail_leds;
2642
2643 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2644 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2645 asus->driver->wlan_ctrl_by_user = 1;
2646
2647 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2648 err = asus_wmi_rfkill_init(asus);
2649 if (err)
2650 goto fail_rfkill;
2651 }
2652
2653 if (asus->driver->quirks->wmi_force_als_set)
2654 asus_wmi_set_als();
2655
2656 /* Some Asus desktop boards export an acpi-video backlight interface,
2657 stop this from showing up */
2658 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2659 if (chassis_type && !strcmp(chassis_type, "3"))
2660 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2661
2662 if (asus->driver->quirks->wmi_backlight_power)
2663 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2664
2665 if (asus->driver->quirks->wmi_backlight_native)
2666 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2667
2668 if (asus->driver->quirks->xusb2pr)
2669 asus_wmi_set_xusb2pr(asus);
2670
2671 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2672 err = asus_wmi_backlight_init(asus);
2673 if (err && err != -ENODEV)
2674 goto fail_backlight;
2675 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2676 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2677
2678 if (asus_wmi_has_fnlock_key(asus)) {
2679 asus->fnlock_locked = fnlock_default;
2680 asus_wmi_fnlock_update(asus);
2681 }
2682
2683 status = wmi_install_notify_handler(asus->driver->event_guid,
2684 asus_wmi_notify, asus);
2685 if (ACPI_FAILURE(status)) {
2686 pr_err("Unable to register notify handler - %d\n", status);
2687 err = -ENODEV;
2688 goto fail_wmi_handler;
2689 }
2690
2691 asus_wmi_battery_init(asus);
2692
2693 asus_wmi_debugfs_init(asus);
2694
2695 return 0;
2696
2697fail_wmi_handler:
2698 asus_wmi_backlight_exit(asus);
2699fail_backlight:
2700 asus_wmi_rfkill_exit(asus);
2701fail_rfkill:
2702 asus_wmi_led_exit(asus);
2703fail_leds:
2704fail_hwmon:
2705 asus_wmi_input_exit(asus);
2706fail_input:
2707 asus_wmi_sysfs_exit(asus->platform_device);
2708fail_sysfs:
2709fail_throttle_thermal_policy:
2710fail_fan_boost_mode:
2711fail_platform:
2712 kfree(asus);
2713 return err;
2714}
2715
2716static int asus_wmi_remove(struct platform_device *device)
2717{
2718 struct asus_wmi *asus;
2719
2720 asus = platform_get_drvdata(device);
2721 wmi_remove_notify_handler(asus->driver->event_guid);
2722 asus_wmi_backlight_exit(asus);
2723 asus_wmi_input_exit(asus);
2724 asus_wmi_led_exit(asus);
2725 asus_wmi_rfkill_exit(asus);
2726 asus_wmi_debugfs_exit(asus);
2727 asus_wmi_sysfs_exit(asus->platform_device);
2728 asus_fan_set_auto(asus);
2729 asus_wmi_battery_exit(asus);
2730
2731 kfree(asus);
2732 return 0;
2733}
2734
2735/* Platform driver - hibernate/resume callbacks *******************************/
2736
2737static int asus_hotk_thaw(struct device *device)
2738{
2739 struct asus_wmi *asus = dev_get_drvdata(device);
2740
2741 if (asus->wlan.rfkill) {
2742 bool wlan;
2743
2744 /*
2745 * Work around bios bug - acpi _PTS turns off the wireless led
2746 * during suspend. Normally it restores it on resume, but
2747 * we should kick it ourselves in case hibernation is aborted.
2748 */
2749 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2750 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2751 }
2752
2753 return 0;
2754}
2755
2756static int asus_hotk_resume(struct device *device)
2757{
2758 struct asus_wmi *asus = dev_get_drvdata(device);
2759
2760 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2761 kbd_led_update(asus);
2762
2763 if (asus_wmi_has_fnlock_key(asus))
2764 asus_wmi_fnlock_update(asus);
2765
2766 if (asus->driver->quirks->use_lid_flip_devid)
2767 lid_flip_tablet_mode_get_state(asus);
2768
2769 return 0;
2770}
2771
2772static int asus_hotk_restore(struct device *device)
2773{
2774 struct asus_wmi *asus = dev_get_drvdata(device);
2775 int bl;
2776
2777 /* Refresh both wlan rfkill state and pci hotplug */
2778 if (asus->wlan.rfkill)
2779 asus_rfkill_hotplug(asus);
2780
2781 if (asus->bluetooth.rfkill) {
2782 bl = !asus_wmi_get_devstate_simple(asus,
2783 ASUS_WMI_DEVID_BLUETOOTH);
2784 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2785 }
2786 if (asus->wimax.rfkill) {
2787 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2788 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2789 }
2790 if (asus->wwan3g.rfkill) {
2791 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2792 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2793 }
2794 if (asus->gps.rfkill) {
2795 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2796 rfkill_set_sw_state(asus->gps.rfkill, bl);
2797 }
2798 if (asus->uwb.rfkill) {
2799 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2800 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2801 }
2802 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2803 kbd_led_update(asus);
2804
2805 if (asus_wmi_has_fnlock_key(asus))
2806 asus_wmi_fnlock_update(asus);
2807
2808 if (asus->driver->quirks->use_lid_flip_devid)
2809 lid_flip_tablet_mode_get_state(asus);
2810
2811 return 0;
2812}
2813
2814static const struct dev_pm_ops asus_pm_ops = {
2815 .thaw = asus_hotk_thaw,
2816 .restore = asus_hotk_restore,
2817 .resume = asus_hotk_resume,
2818};
2819
2820/* Registration ***************************************************************/
2821
2822static int asus_wmi_probe(struct platform_device *pdev)
2823{
2824 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2825 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2826 int ret;
2827
2828 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2829 pr_warn("ASUS Management GUID not found\n");
2830 return -ENODEV;
2831 }
2832
2833 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2834 pr_warn("ASUS Event GUID not found\n");
2835 return -ENODEV;
2836 }
2837
2838 if (wdrv->probe) {
2839 ret = wdrv->probe(pdev);
2840 if (ret)
2841 return ret;
2842 }
2843
2844 return asus_wmi_add(pdev);
2845}
2846
2847static bool used;
2848
2849int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2850{
2851 struct platform_driver *platform_driver;
2852 struct platform_device *platform_device;
2853
2854 if (used)
2855 return -EBUSY;
2856
2857 platform_driver = &driver->platform_driver;
2858 platform_driver->remove = asus_wmi_remove;
2859 platform_driver->driver.owner = driver->owner;
2860 platform_driver->driver.name = driver->name;
2861 platform_driver->driver.pm = &asus_pm_ops;
2862
2863 platform_device = platform_create_bundle(platform_driver,
2864 asus_wmi_probe,
2865 NULL, 0, NULL, 0);
2866 if (IS_ERR(platform_device))
2867 return PTR_ERR(platform_device);
2868
2869 used = true;
2870 return 0;
2871}
2872EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2873
2874void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2875{
2876 platform_device_unregister(driver->platform_device);
2877 platform_driver_unregister(&driver->platform_driver);
2878 used = false;
2879}
2880EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2881
2882static int __init asus_wmi_init(void)
2883{
2884 pr_info("ASUS WMI generic driver loaded\n");
2885 return 0;
2886}
2887
2888static void __exit asus_wmi_exit(void)
2889{
2890 pr_info("ASUS WMI generic driver unloaded\n");
2891}
2892
2893module_init(asus_wmi_init);
2894module_exit(asus_wmi_exit);