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
45 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
46 "Yong Wang <yong.y.wang@intel.com>");
47 MODULE_DESCRIPTION("Asus Generic WMI Driver");
48 MODULE_LICENSE("GPL");
49
50 #define to_asus_wmi_driver(pdrv) \
51 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
52
53 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
54
55 #define NOTIFY_BRNUP_MIN 0x11
56 #define NOTIFY_BRNUP_MAX 0x1f
57 #define NOTIFY_BRNDOWN_MIN 0x20
58 #define NOTIFY_BRNDOWN_MAX 0x2e
59 #define NOTIFY_FNLOCK_TOGGLE 0x4e
60 #define NOTIFY_KBD_DOCK_CHANGE 0x75
61 #define NOTIFY_KBD_BRTUP 0xc4
62 #define NOTIFY_KBD_BRTDWN 0xc5
63 #define NOTIFY_KBD_BRTTOGGLE 0xc7
64 #define NOTIFY_KBD_FBM 0x99
65 #define NOTIFY_KBD_TTP 0xae
66
67 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
68
69 #define ASUS_FAN_DESC "cpu_fan"
70 #define ASUS_FAN_MFUN 0x13
71 #define ASUS_FAN_SFUN_READ 0x06
72 #define ASUS_FAN_SFUN_WRITE 0x07
73
74 /* Based on standard hwmon pwmX_enable values */
75 #define ASUS_FAN_CTRL_FULLSPEED 0
76 #define ASUS_FAN_CTRL_MANUAL 1
77 #define ASUS_FAN_CTRL_AUTO 2
78
79 #define ASUS_FAN_BOOST_MODE_NORMAL 0
80 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1
81 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
82 #define ASUS_FAN_BOOST_MODE_SILENT 2
83 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
84 #define ASUS_FAN_BOOST_MODES_MASK 0x03
85
86 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0
87 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
88 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
89
90 #define USB_INTEL_XUSB2PR 0xD0
91 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
92
93 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
94 #define ASUS_ACPI_UID_ATK "ATK"
95
96 #define WMI_EVENT_QUEUE_SIZE 0x10
97 #define WMI_EVENT_QUEUE_END 0x1
98 #define WMI_EVENT_MASK 0xFFFF
99 /* The WMI hotkey event value is always the same. */
100 #define WMI_EVENT_VALUE_ATK 0xFF
101
102 #define WMI_EVENT_MASK 0xFFFF
103
104 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
105
ashs_present(void)106 static bool ashs_present(void)
107 {
108 int i = 0;
109 while (ashs_ids[i]) {
110 if (acpi_dev_found(ashs_ids[i++]))
111 return true;
112 }
113 return false;
114 }
115
116 struct bios_args {
117 u32 arg0;
118 u32 arg1;
119 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
120 u32 arg4;
121 u32 arg5;
122 } __packed;
123
124 /*
125 * Struct that's used for all methods called via AGFN. Naming is
126 * identically to the AML code.
127 */
128 struct agfn_args {
129 u16 mfun; /* probably "Multi-function" to be called */
130 u16 sfun; /* probably "Sub-function" to be called */
131 u16 len; /* size of the hole struct, including subfunction fields */
132 u8 stas; /* not used by now */
133 u8 err; /* zero on success */
134 } __packed;
135
136 /* struct used for calling fan read and write methods */
137 struct agfn_fan_args {
138 struct agfn_args agfn; /* common fields */
139 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
140 u32 speed; /* read: RPM/100 - write: 0-255 */
141 } __packed;
142
143 /*
144 * <platform>/ - debugfs root directory
145 * dev_id - current dev_id
146 * ctrl_param - current ctrl_param
147 * method_id - current method_id
148 * devs - call DEVS(dev_id, ctrl_param) and print result
149 * dsts - call DSTS(dev_id) and print result
150 * call - call method_id(dev_id, ctrl_param) and print result
151 */
152 struct asus_wmi_debug {
153 struct dentry *root;
154 u32 method_id;
155 u32 dev_id;
156 u32 ctrl_param;
157 };
158
159 struct asus_rfkill {
160 struct asus_wmi *asus;
161 struct rfkill *rfkill;
162 u32 dev_id;
163 };
164
165 enum fan_type {
166 FAN_TYPE_NONE = 0,
167 FAN_TYPE_AGFN, /* deprecated on newer platforms */
168 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
169 };
170
171 struct asus_wmi {
172 int dsts_id;
173 int spec;
174 int sfun;
175 bool wmi_event_queue;
176
177 struct input_dev *inputdev;
178 struct backlight_device *backlight_device;
179 struct platform_device *platform_device;
180
181 struct led_classdev wlan_led;
182 int wlan_led_wk;
183 struct led_classdev tpd_led;
184 int tpd_led_wk;
185 struct led_classdev kbd_led;
186 int kbd_led_wk;
187 struct led_classdev lightbar_led;
188 int lightbar_led_wk;
189 struct workqueue_struct *led_workqueue;
190 struct work_struct tpd_led_work;
191 struct work_struct wlan_led_work;
192 struct work_struct lightbar_led_work;
193
194 struct asus_rfkill wlan;
195 struct asus_rfkill bluetooth;
196 struct asus_rfkill wimax;
197 struct asus_rfkill wwan3g;
198 struct asus_rfkill gps;
199 struct asus_rfkill uwb;
200
201 enum fan_type fan_type;
202 int fan_pwm_mode;
203 int agfn_pwm;
204
205 bool fan_boost_mode_available;
206 u8 fan_boost_mode_mask;
207 u8 fan_boost_mode;
208
209 bool throttle_thermal_policy_available;
210 u8 throttle_thermal_policy_mode;
211
212 // The RSOC controls the maximum charging percentage.
213 bool battery_rsoc_available;
214
215 struct hotplug_slot hotplug_slot;
216 struct mutex hotplug_lock;
217 struct mutex wmi_lock;
218 struct workqueue_struct *hotplug_workqueue;
219 struct work_struct hotplug_work;
220
221 bool fnlock_locked;
222
223 struct asus_wmi_debug debug;
224
225 struct asus_wmi_driver *driver;
226 };
227
228 /* WMI ************************************************************************/
229
asus_wmi_evaluate_method3(u32 method_id,u32 arg0,u32 arg1,u32 arg2,u32 * retval)230 static int asus_wmi_evaluate_method3(u32 method_id,
231 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
232 {
233 struct bios_args args = {
234 .arg0 = arg0,
235 .arg1 = arg1,
236 .arg2 = arg2,
237 };
238 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
239 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
240 acpi_status status;
241 union acpi_object *obj;
242 u32 tmp = 0;
243
244 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
245 &input, &output);
246
247 if (ACPI_FAILURE(status))
248 return -EIO;
249
250 obj = (union acpi_object *)output.pointer;
251 if (obj && obj->type == ACPI_TYPE_INTEGER)
252 tmp = (u32) obj->integer.value;
253
254 if (retval)
255 *retval = tmp;
256
257 kfree(obj);
258
259 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
260 return -ENODEV;
261
262 return 0;
263 }
264
asus_wmi_evaluate_method(u32 method_id,u32 arg0,u32 arg1,u32 * retval)265 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
266 {
267 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
268 }
269 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
270
asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)271 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
272 {
273 struct acpi_buffer input;
274 u64 phys_addr;
275 u32 retval;
276 u32 status;
277
278 /*
279 * Copy to dma capable address otherwise memory corruption occurs as
280 * bios has to be able to access it.
281 */
282 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
283 input.length = args.length;
284 if (!input.pointer)
285 return -ENOMEM;
286 phys_addr = virt_to_phys(input.pointer);
287
288 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
289 phys_addr, 0, &retval);
290 if (!status)
291 memcpy(args.pointer, input.pointer, args.length);
292
293 kfree(input.pointer);
294 if (status)
295 return -ENXIO;
296
297 return retval;
298 }
299
asus_wmi_get_devstate(struct asus_wmi * asus,u32 dev_id,u32 * retval)300 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
301 {
302 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
303 }
304
asus_wmi_set_devstate(u32 dev_id,u32 ctrl_param,u32 * retval)305 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
306 u32 *retval)
307 {
308 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
309 ctrl_param, retval);
310 }
311
312 /* Helper for special devices with magic return codes */
asus_wmi_get_devstate_bits(struct asus_wmi * asus,u32 dev_id,u32 mask)313 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
314 u32 dev_id, u32 mask)
315 {
316 u32 retval = 0;
317 int err;
318
319 err = asus_wmi_get_devstate(asus, dev_id, &retval);
320 if (err < 0)
321 return err;
322
323 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
324 return -ENODEV;
325
326 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
327 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
328 return -ENODEV;
329 }
330
331 return retval & mask;
332 }
333
asus_wmi_get_devstate_simple(struct asus_wmi * asus,u32 dev_id)334 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
335 {
336 return asus_wmi_get_devstate_bits(asus, dev_id,
337 ASUS_WMI_DSTS_STATUS_BIT);
338 }
339
asus_wmi_dev_is_present(struct asus_wmi * asus,u32 dev_id)340 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
341 {
342 u32 retval;
343 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
344
345 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
346 }
347
348 /* Input **********************************************************************/
349
asus_wmi_input_init(struct asus_wmi * asus)350 static int asus_wmi_input_init(struct asus_wmi *asus)
351 {
352 int err, result;
353
354 asus->inputdev = input_allocate_device();
355 if (!asus->inputdev)
356 return -ENOMEM;
357
358 asus->inputdev->name = asus->driver->input_name;
359 asus->inputdev->phys = asus->driver->input_phys;
360 asus->inputdev->id.bustype = BUS_HOST;
361 asus->inputdev->dev.parent = &asus->platform_device->dev;
362 set_bit(EV_REP, asus->inputdev->evbit);
363
364 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
365 if (err)
366 goto err_free_dev;
367
368 if (asus->driver->quirks->use_kbd_dock_devid) {
369 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
370 if (result >= 0) {
371 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
372 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
373 } else if (result != -ENODEV) {
374 pr_err("Error checking for keyboard-dock: %d\n", result);
375 }
376 }
377
378 err = input_register_device(asus->inputdev);
379 if (err)
380 goto err_free_dev;
381
382 return 0;
383
384 err_free_dev:
385 input_free_device(asus->inputdev);
386 return err;
387 }
388
asus_wmi_input_exit(struct asus_wmi * asus)389 static void asus_wmi_input_exit(struct asus_wmi *asus)
390 {
391 if (asus->inputdev)
392 input_unregister_device(asus->inputdev);
393
394 asus->inputdev = NULL;
395 }
396
397 /* Battery ********************************************************************/
398
399 /* The battery maximum charging percentage */
400 static int charge_end_threshold;
401
charge_control_end_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)402 static ssize_t charge_control_end_threshold_store(struct device *dev,
403 struct device_attribute *attr,
404 const char *buf, size_t count)
405 {
406 int value, ret, rv;
407
408 ret = kstrtouint(buf, 10, &value);
409 if (ret)
410 return ret;
411
412 if (value < 0 || value > 100)
413 return -EINVAL;
414
415 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
416 if (ret)
417 return ret;
418
419 if (rv != 1)
420 return -EIO;
421
422 /* There isn't any method in the DSDT to read the threshold, so we
423 * save the threshold.
424 */
425 charge_end_threshold = value;
426 return count;
427 }
428
charge_control_end_threshold_show(struct device * device,struct device_attribute * attr,char * buf)429 static ssize_t charge_control_end_threshold_show(struct device *device,
430 struct device_attribute *attr,
431 char *buf)
432 {
433 return sprintf(buf, "%d\n", charge_end_threshold);
434 }
435
436 static DEVICE_ATTR_RW(charge_control_end_threshold);
437
asus_wmi_battery_add(struct power_supply * battery)438 static int asus_wmi_battery_add(struct power_supply *battery)
439 {
440 /* The WMI method does not provide a way to specific a battery, so we
441 * just assume it is the first battery.
442 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
443 * battery is named BATT.
444 */
445 if (strcmp(battery->desc->name, "BAT0") != 0 &&
446 strcmp(battery->desc->name, "BAT1") != 0 &&
447 strcmp(battery->desc->name, "BATC") != 0 &&
448 strcmp(battery->desc->name, "BATT") != 0)
449 return -ENODEV;
450
451 if (device_create_file(&battery->dev,
452 &dev_attr_charge_control_end_threshold))
453 return -ENODEV;
454
455 /* The charge threshold is only reset when the system is power cycled,
456 * and we can't get the current threshold so let set it to 100% when
457 * a battery is added.
458 */
459 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
460 charge_end_threshold = 100;
461
462 return 0;
463 }
464
asus_wmi_battery_remove(struct power_supply * battery)465 static int asus_wmi_battery_remove(struct power_supply *battery)
466 {
467 device_remove_file(&battery->dev,
468 &dev_attr_charge_control_end_threshold);
469 return 0;
470 }
471
472 static struct acpi_battery_hook battery_hook = {
473 .add_battery = asus_wmi_battery_add,
474 .remove_battery = asus_wmi_battery_remove,
475 .name = "ASUS Battery Extension",
476 };
477
asus_wmi_battery_init(struct asus_wmi * asus)478 static void asus_wmi_battery_init(struct asus_wmi *asus)
479 {
480 asus->battery_rsoc_available = false;
481 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
482 asus->battery_rsoc_available = true;
483 battery_hook_register(&battery_hook);
484 }
485 }
486
asus_wmi_battery_exit(struct asus_wmi * asus)487 static void asus_wmi_battery_exit(struct asus_wmi *asus)
488 {
489 if (asus->battery_rsoc_available)
490 battery_hook_unregister(&battery_hook);
491 }
492
493 /* LEDs ***********************************************************************/
494
495 /*
496 * These functions actually update the LED's, and are called from a
497 * workqueue. By doing this as separate work rather than when the LED
498 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
499 * potentially bad time, such as a timer interrupt.
500 */
tpd_led_update(struct work_struct * work)501 static void tpd_led_update(struct work_struct *work)
502 {
503 int ctrl_param;
504 struct asus_wmi *asus;
505
506 asus = container_of(work, struct asus_wmi, tpd_led_work);
507
508 ctrl_param = asus->tpd_led_wk;
509 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
510 }
511
tpd_led_set(struct led_classdev * led_cdev,enum led_brightness value)512 static void tpd_led_set(struct led_classdev *led_cdev,
513 enum led_brightness value)
514 {
515 struct asus_wmi *asus;
516
517 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
518
519 asus->tpd_led_wk = !!value;
520 queue_work(asus->led_workqueue, &asus->tpd_led_work);
521 }
522
read_tpd_led_state(struct asus_wmi * asus)523 static int read_tpd_led_state(struct asus_wmi *asus)
524 {
525 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
526 }
527
tpd_led_get(struct led_classdev * led_cdev)528 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
529 {
530 struct asus_wmi *asus;
531
532 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
533
534 return read_tpd_led_state(asus);
535 }
536
kbd_led_update(struct asus_wmi * asus)537 static void kbd_led_update(struct asus_wmi *asus)
538 {
539 int ctrl_param = 0;
540
541 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
542 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
543 }
544
kbd_led_read(struct asus_wmi * asus,int * level,int * env)545 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
546 {
547 int retval;
548
549 /*
550 * bits 0-2: level
551 * bit 7: light on/off
552 * bit 8-10: environment (0: dark, 1: normal, 2: light)
553 * bit 17: status unknown
554 */
555 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
556 0xFFFF);
557
558 /* Unknown status is considered as off */
559 if (retval == 0x8000)
560 retval = 0;
561
562 if (retval < 0)
563 return retval;
564
565 if (level)
566 *level = retval & 0x7F;
567 if (env)
568 *env = (retval >> 8) & 0x7F;
569 return 0;
570 }
571
do_kbd_led_set(struct led_classdev * led_cdev,int value)572 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
573 {
574 struct asus_wmi *asus;
575 int max_level;
576
577 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
578 max_level = asus->kbd_led.max_brightness;
579
580 asus->kbd_led_wk = clamp_val(value, 0, max_level);
581 kbd_led_update(asus);
582 }
583
kbd_led_set(struct led_classdev * led_cdev,enum led_brightness value)584 static void kbd_led_set(struct led_classdev *led_cdev,
585 enum led_brightness value)
586 {
587 /* Prevent disabling keyboard backlight on module unregister */
588 if (led_cdev->flags & LED_UNREGISTERING)
589 return;
590
591 do_kbd_led_set(led_cdev, value);
592 }
593
kbd_led_set_by_kbd(struct asus_wmi * asus,enum led_brightness value)594 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
595 {
596 struct led_classdev *led_cdev = &asus->kbd_led;
597
598 do_kbd_led_set(led_cdev, value);
599 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
600 }
601
kbd_led_get(struct led_classdev * led_cdev)602 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
603 {
604 struct asus_wmi *asus;
605 int retval, value;
606
607 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
608
609 retval = kbd_led_read(asus, &value, NULL);
610 if (retval < 0)
611 return retval;
612
613 return value;
614 }
615
wlan_led_unknown_state(struct asus_wmi * asus)616 static int wlan_led_unknown_state(struct asus_wmi *asus)
617 {
618 u32 result;
619
620 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
621
622 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
623 }
624
wlan_led_update(struct work_struct * work)625 static void wlan_led_update(struct work_struct *work)
626 {
627 int ctrl_param;
628 struct asus_wmi *asus;
629
630 asus = container_of(work, struct asus_wmi, wlan_led_work);
631
632 ctrl_param = asus->wlan_led_wk;
633 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
634 }
635
wlan_led_set(struct led_classdev * led_cdev,enum led_brightness value)636 static void wlan_led_set(struct led_classdev *led_cdev,
637 enum led_brightness value)
638 {
639 struct asus_wmi *asus;
640
641 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
642
643 asus->wlan_led_wk = !!value;
644 queue_work(asus->led_workqueue, &asus->wlan_led_work);
645 }
646
wlan_led_get(struct led_classdev * led_cdev)647 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
648 {
649 struct asus_wmi *asus;
650 u32 result;
651
652 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
653 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
654
655 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
656 }
657
lightbar_led_update(struct work_struct * work)658 static void lightbar_led_update(struct work_struct *work)
659 {
660 struct asus_wmi *asus;
661 int ctrl_param;
662
663 asus = container_of(work, struct asus_wmi, lightbar_led_work);
664
665 ctrl_param = asus->lightbar_led_wk;
666 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
667 }
668
lightbar_led_set(struct led_classdev * led_cdev,enum led_brightness value)669 static void lightbar_led_set(struct led_classdev *led_cdev,
670 enum led_brightness value)
671 {
672 struct asus_wmi *asus;
673
674 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
675
676 asus->lightbar_led_wk = !!value;
677 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
678 }
679
lightbar_led_get(struct led_classdev * led_cdev)680 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
681 {
682 struct asus_wmi *asus;
683 u32 result;
684
685 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
686 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
687
688 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
689 }
690
asus_wmi_led_exit(struct asus_wmi * asus)691 static void asus_wmi_led_exit(struct asus_wmi *asus)
692 {
693 led_classdev_unregister(&asus->kbd_led);
694 led_classdev_unregister(&asus->tpd_led);
695 led_classdev_unregister(&asus->wlan_led);
696 led_classdev_unregister(&asus->lightbar_led);
697
698 if (asus->led_workqueue)
699 destroy_workqueue(asus->led_workqueue);
700 }
701
asus_wmi_led_init(struct asus_wmi * asus)702 static int asus_wmi_led_init(struct asus_wmi *asus)
703 {
704 int rv = 0, led_val;
705
706 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
707 if (!asus->led_workqueue)
708 return -ENOMEM;
709
710 if (read_tpd_led_state(asus) >= 0) {
711 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
712
713 asus->tpd_led.name = "asus::touchpad";
714 asus->tpd_led.brightness_set = tpd_led_set;
715 asus->tpd_led.brightness_get = tpd_led_get;
716 asus->tpd_led.max_brightness = 1;
717
718 rv = led_classdev_register(&asus->platform_device->dev,
719 &asus->tpd_led);
720 if (rv)
721 goto error;
722 }
723
724 if (!kbd_led_read(asus, &led_val, NULL)) {
725 asus->kbd_led_wk = led_val;
726 asus->kbd_led.name = "asus::kbd_backlight";
727 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
728 asus->kbd_led.brightness_set = kbd_led_set;
729 asus->kbd_led.brightness_get = kbd_led_get;
730 asus->kbd_led.max_brightness = 3;
731
732 rv = led_classdev_register(&asus->platform_device->dev,
733 &asus->kbd_led);
734 if (rv)
735 goto error;
736 }
737
738 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
739 && (asus->driver->quirks->wapf > 0)) {
740 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
741
742 asus->wlan_led.name = "asus::wlan";
743 asus->wlan_led.brightness_set = wlan_led_set;
744 if (!wlan_led_unknown_state(asus))
745 asus->wlan_led.brightness_get = wlan_led_get;
746 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
747 asus->wlan_led.max_brightness = 1;
748 asus->wlan_led.default_trigger = "asus-wlan";
749
750 rv = led_classdev_register(&asus->platform_device->dev,
751 &asus->wlan_led);
752 if (rv)
753 goto error;
754 }
755
756 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
757 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
758
759 asus->lightbar_led.name = "asus::lightbar";
760 asus->lightbar_led.brightness_set = lightbar_led_set;
761 asus->lightbar_led.brightness_get = lightbar_led_get;
762 asus->lightbar_led.max_brightness = 1;
763
764 rv = led_classdev_register(&asus->platform_device->dev,
765 &asus->lightbar_led);
766 }
767
768 error:
769 if (rv)
770 asus_wmi_led_exit(asus);
771
772 return rv;
773 }
774
775 /* RF *************************************************************************/
776
777 /*
778 * PCI hotplug (for wlan rfkill)
779 */
asus_wlan_rfkill_blocked(struct asus_wmi * asus)780 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
781 {
782 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
783
784 if (result < 0)
785 return false;
786 return !result;
787 }
788
asus_rfkill_hotplug(struct asus_wmi * asus)789 static void asus_rfkill_hotplug(struct asus_wmi *asus)
790 {
791 struct pci_dev *dev;
792 struct pci_bus *bus;
793 bool blocked;
794 bool absent;
795 u32 l;
796
797 mutex_lock(&asus->wmi_lock);
798 blocked = asus_wlan_rfkill_blocked(asus);
799 mutex_unlock(&asus->wmi_lock);
800
801 mutex_lock(&asus->hotplug_lock);
802 pci_lock_rescan_remove();
803
804 if (asus->wlan.rfkill)
805 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
806
807 if (asus->hotplug_slot.ops) {
808 bus = pci_find_bus(0, 1);
809 if (!bus) {
810 pr_warn("Unable to find PCI bus 1?\n");
811 goto out_unlock;
812 }
813
814 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
815 pr_err("Unable to read PCI config space?\n");
816 goto out_unlock;
817 }
818 absent = (l == 0xffffffff);
819
820 if (blocked != absent) {
821 pr_warn("BIOS says wireless lan is %s, "
822 "but the pci device is %s\n",
823 blocked ? "blocked" : "unblocked",
824 absent ? "absent" : "present");
825 pr_warn("skipped wireless hotplug as probably "
826 "inappropriate for this model\n");
827 goto out_unlock;
828 }
829
830 if (!blocked) {
831 dev = pci_get_slot(bus, 0);
832 if (dev) {
833 /* Device already present */
834 pci_dev_put(dev);
835 goto out_unlock;
836 }
837 dev = pci_scan_single_device(bus, 0);
838 if (dev) {
839 pci_bus_assign_resources(bus);
840 pci_bus_add_device(dev);
841 }
842 } else {
843 dev = pci_get_slot(bus, 0);
844 if (dev) {
845 pci_stop_and_remove_bus_device(dev);
846 pci_dev_put(dev);
847 }
848 }
849 }
850
851 out_unlock:
852 pci_unlock_rescan_remove();
853 mutex_unlock(&asus->hotplug_lock);
854 }
855
asus_rfkill_notify(acpi_handle handle,u32 event,void * data)856 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
857 {
858 struct asus_wmi *asus = data;
859
860 if (event != ACPI_NOTIFY_BUS_CHECK)
861 return;
862
863 /*
864 * We can't call directly asus_rfkill_hotplug because most
865 * of the time WMBC is still being executed and not reetrant.
866 * There is currently no way to tell ACPICA that we want this
867 * method to be serialized, we schedule a asus_rfkill_hotplug
868 * call later, in a safer context.
869 */
870 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
871 }
872
asus_register_rfkill_notifier(struct asus_wmi * asus,char * node)873 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
874 {
875 acpi_status status;
876 acpi_handle handle;
877
878 status = acpi_get_handle(NULL, node, &handle);
879 if (ACPI_FAILURE(status))
880 return -ENODEV;
881
882 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
883 asus_rfkill_notify, asus);
884 if (ACPI_FAILURE(status))
885 pr_warn("Failed to register notify on %s\n", node);
886
887 return 0;
888 }
889
asus_unregister_rfkill_notifier(struct asus_wmi * asus,char * node)890 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
891 {
892 acpi_status status = AE_OK;
893 acpi_handle handle;
894
895 status = acpi_get_handle(NULL, node, &handle);
896 if (ACPI_FAILURE(status))
897 return;
898
899 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
900 asus_rfkill_notify);
901 if (ACPI_FAILURE(status))
902 pr_err("Error removing rfkill notify handler %s\n", node);
903 }
904
asus_get_adapter_status(struct hotplug_slot * hotplug_slot,u8 * value)905 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
906 u8 *value)
907 {
908 struct asus_wmi *asus = container_of(hotplug_slot,
909 struct asus_wmi, hotplug_slot);
910 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
911
912 if (result < 0)
913 return result;
914
915 *value = !!result;
916 return 0;
917 }
918
919 static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
920 .get_adapter_status = asus_get_adapter_status,
921 .get_power_status = asus_get_adapter_status,
922 };
923
asus_hotplug_work(struct work_struct * work)924 static void asus_hotplug_work(struct work_struct *work)
925 {
926 struct asus_wmi *asus;
927
928 asus = container_of(work, struct asus_wmi, hotplug_work);
929 asus_rfkill_hotplug(asus);
930 }
931
asus_setup_pci_hotplug(struct asus_wmi * asus)932 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
933 {
934 int ret = -ENOMEM;
935 struct pci_bus *bus = pci_find_bus(0, 1);
936
937 if (!bus) {
938 pr_err("Unable to find wifi PCI bus\n");
939 return -ENODEV;
940 }
941
942 asus->hotplug_workqueue =
943 create_singlethread_workqueue("hotplug_workqueue");
944 if (!asus->hotplug_workqueue)
945 goto error_workqueue;
946
947 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
948
949 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
950
951 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
952 if (ret) {
953 pr_err("Unable to register hotplug slot - %d\n", ret);
954 goto error_register;
955 }
956
957 return 0;
958
959 error_register:
960 asus->hotplug_slot.ops = NULL;
961 destroy_workqueue(asus->hotplug_workqueue);
962 error_workqueue:
963 return ret;
964 }
965
966 /*
967 * Rfkill devices
968 */
asus_rfkill_set(void * data,bool blocked)969 static int asus_rfkill_set(void *data, bool blocked)
970 {
971 struct asus_rfkill *priv = data;
972 u32 ctrl_param = !blocked;
973 u32 dev_id = priv->dev_id;
974
975 /*
976 * If the user bit is set, BIOS can't set and record the wlan status,
977 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
978 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
979 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
980 * while setting the wlan status through WMI.
981 * This is also the behavior that windows app will do.
982 */
983 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
984 priv->asus->driver->wlan_ctrl_by_user)
985 dev_id = ASUS_WMI_DEVID_WLAN_LED;
986
987 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
988 }
989
asus_rfkill_query(struct rfkill * rfkill,void * data)990 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
991 {
992 struct asus_rfkill *priv = data;
993 int result;
994
995 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
996
997 if (result < 0)
998 return;
999
1000 rfkill_set_sw_state(priv->rfkill, !result);
1001 }
1002
asus_rfkill_wlan_set(void * data,bool blocked)1003 static int asus_rfkill_wlan_set(void *data, bool blocked)
1004 {
1005 struct asus_rfkill *priv = data;
1006 struct asus_wmi *asus = priv->asus;
1007 int ret;
1008
1009 /*
1010 * This handler is enabled only if hotplug is enabled.
1011 * In this case, the asus_wmi_set_devstate() will
1012 * trigger a wmi notification and we need to wait
1013 * this call to finish before being able to call
1014 * any wmi method
1015 */
1016 mutex_lock(&asus->wmi_lock);
1017 ret = asus_rfkill_set(data, blocked);
1018 mutex_unlock(&asus->wmi_lock);
1019 return ret;
1020 }
1021
1022 static const struct rfkill_ops asus_rfkill_wlan_ops = {
1023 .set_block = asus_rfkill_wlan_set,
1024 .query = asus_rfkill_query,
1025 };
1026
1027 static const struct rfkill_ops asus_rfkill_ops = {
1028 .set_block = asus_rfkill_set,
1029 .query = asus_rfkill_query,
1030 };
1031
asus_new_rfkill(struct asus_wmi * asus,struct asus_rfkill * arfkill,const char * name,enum rfkill_type type,int dev_id)1032 static int asus_new_rfkill(struct asus_wmi *asus,
1033 struct asus_rfkill *arfkill,
1034 const char *name, enum rfkill_type type, int dev_id)
1035 {
1036 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1037 struct rfkill **rfkill = &arfkill->rfkill;
1038
1039 if (result < 0)
1040 return result;
1041
1042 arfkill->dev_id = dev_id;
1043 arfkill->asus = asus;
1044
1045 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1046 asus->driver->quirks->hotplug_wireless)
1047 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1048 &asus_rfkill_wlan_ops, arfkill);
1049 else
1050 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1051 &asus_rfkill_ops, arfkill);
1052
1053 if (!*rfkill)
1054 return -EINVAL;
1055
1056 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1057 (asus->driver->quirks->wapf > 0))
1058 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1059
1060 rfkill_init_sw_state(*rfkill, !result);
1061 result = rfkill_register(*rfkill);
1062 if (result) {
1063 rfkill_destroy(*rfkill);
1064 *rfkill = NULL;
1065 return result;
1066 }
1067 return 0;
1068 }
1069
asus_wmi_rfkill_exit(struct asus_wmi * asus)1070 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1071 {
1072 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1073 return;
1074
1075 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1076 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1077 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1078 if (asus->wlan.rfkill) {
1079 rfkill_unregister(asus->wlan.rfkill);
1080 rfkill_destroy(asus->wlan.rfkill);
1081 asus->wlan.rfkill = NULL;
1082 }
1083 /*
1084 * Refresh pci hotplug in case the rfkill state was changed after
1085 * asus_unregister_rfkill_notifier()
1086 */
1087 asus_rfkill_hotplug(asus);
1088 if (asus->hotplug_slot.ops)
1089 pci_hp_deregister(&asus->hotplug_slot);
1090 if (asus->hotplug_workqueue)
1091 destroy_workqueue(asus->hotplug_workqueue);
1092
1093 if (asus->bluetooth.rfkill) {
1094 rfkill_unregister(asus->bluetooth.rfkill);
1095 rfkill_destroy(asus->bluetooth.rfkill);
1096 asus->bluetooth.rfkill = NULL;
1097 }
1098 if (asus->wimax.rfkill) {
1099 rfkill_unregister(asus->wimax.rfkill);
1100 rfkill_destroy(asus->wimax.rfkill);
1101 asus->wimax.rfkill = NULL;
1102 }
1103 if (asus->wwan3g.rfkill) {
1104 rfkill_unregister(asus->wwan3g.rfkill);
1105 rfkill_destroy(asus->wwan3g.rfkill);
1106 asus->wwan3g.rfkill = NULL;
1107 }
1108 if (asus->gps.rfkill) {
1109 rfkill_unregister(asus->gps.rfkill);
1110 rfkill_destroy(asus->gps.rfkill);
1111 asus->gps.rfkill = NULL;
1112 }
1113 if (asus->uwb.rfkill) {
1114 rfkill_unregister(asus->uwb.rfkill);
1115 rfkill_destroy(asus->uwb.rfkill);
1116 asus->uwb.rfkill = NULL;
1117 }
1118 }
1119
asus_wmi_rfkill_init(struct asus_wmi * asus)1120 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1121 {
1122 int result = 0;
1123
1124 mutex_init(&asus->hotplug_lock);
1125 mutex_init(&asus->wmi_lock);
1126
1127 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1128 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1129
1130 if (result && result != -ENODEV)
1131 goto exit;
1132
1133 result = asus_new_rfkill(asus, &asus->bluetooth,
1134 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1135 ASUS_WMI_DEVID_BLUETOOTH);
1136
1137 if (result && result != -ENODEV)
1138 goto exit;
1139
1140 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1141 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1142
1143 if (result && result != -ENODEV)
1144 goto exit;
1145
1146 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1147 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1148
1149 if (result && result != -ENODEV)
1150 goto exit;
1151
1152 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1153 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1154
1155 if (result && result != -ENODEV)
1156 goto exit;
1157
1158 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1159 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1160
1161 if (result && result != -ENODEV)
1162 goto exit;
1163
1164 if (!asus->driver->quirks->hotplug_wireless)
1165 goto exit;
1166
1167 result = asus_setup_pci_hotplug(asus);
1168 /*
1169 * If we get -EBUSY then something else is handling the PCI hotplug -
1170 * don't fail in this case
1171 */
1172 if (result == -EBUSY)
1173 result = 0;
1174
1175 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1176 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1177 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1178 /*
1179 * Refresh pci hotplug in case the rfkill state was changed during
1180 * setup.
1181 */
1182 asus_rfkill_hotplug(asus);
1183
1184 exit:
1185 if (result && result != -ENODEV)
1186 asus_wmi_rfkill_exit(asus);
1187
1188 if (result == -ENODEV)
1189 result = 0;
1190
1191 return result;
1192 }
1193
1194 /* Quirks *********************************************************************/
1195
asus_wmi_set_xusb2pr(struct asus_wmi * asus)1196 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1197 {
1198 struct pci_dev *xhci_pdev;
1199 u32 orig_ports_available;
1200 u32 ports_available = asus->driver->quirks->xusb2pr;
1201
1202 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1203 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1204 NULL);
1205
1206 if (!xhci_pdev)
1207 return;
1208
1209 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1210 &orig_ports_available);
1211
1212 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1213 cpu_to_le32(ports_available));
1214
1215 pci_dev_put(xhci_pdev);
1216
1217 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1218 orig_ports_available, ports_available);
1219 }
1220
1221 /*
1222 * Some devices dont support or have borcken get_als method
1223 * but still support set method.
1224 */
asus_wmi_set_als(void)1225 static void asus_wmi_set_als(void)
1226 {
1227 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1228 }
1229
1230 /* Hwmon device ***************************************************************/
1231
asus_agfn_fan_speed_read(struct asus_wmi * asus,int fan,int * speed)1232 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1233 int *speed)
1234 {
1235 struct agfn_fan_args args = {
1236 .agfn.len = sizeof(args),
1237 .agfn.mfun = ASUS_FAN_MFUN,
1238 .agfn.sfun = ASUS_FAN_SFUN_READ,
1239 .fan = fan,
1240 .speed = 0,
1241 };
1242 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1243 int status;
1244
1245 if (fan != 1)
1246 return -EINVAL;
1247
1248 status = asus_wmi_evaluate_method_agfn(input);
1249
1250 if (status || args.agfn.err)
1251 return -ENXIO;
1252
1253 if (speed)
1254 *speed = args.speed;
1255
1256 return 0;
1257 }
1258
asus_agfn_fan_speed_write(struct asus_wmi * asus,int fan,int * speed)1259 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1260 int *speed)
1261 {
1262 struct agfn_fan_args args = {
1263 .agfn.len = sizeof(args),
1264 .agfn.mfun = ASUS_FAN_MFUN,
1265 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1266 .fan = fan,
1267 .speed = speed ? *speed : 0,
1268 };
1269 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1270 int status;
1271
1272 /* 1: for setting 1st fan's speed 0: setting auto mode */
1273 if (fan != 1 && fan != 0)
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 && fan == 1)
1282 asus->agfn_pwm = *speed;
1283
1284 return 0;
1285 }
1286
1287 /*
1288 * Check if we can read the speed of one fan. If true we assume we can also
1289 * control it.
1290 */
asus_wmi_has_agfn_fan(struct asus_wmi * asus)1291 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1292 {
1293 int status;
1294 int speed;
1295 u32 value;
1296
1297 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1298 if (status != 0)
1299 return false;
1300
1301 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1302 if (status != 0)
1303 return false;
1304
1305 /*
1306 * We need to find a better way, probably using sfun,
1307 * bits or spec ...
1308 * Currently we disable it if:
1309 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1310 * - reverved bits are non-zero
1311 * - sfun and presence bit are not set
1312 */
1313 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1314 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1315 }
1316
asus_fan_set_auto(struct asus_wmi * asus)1317 static int asus_fan_set_auto(struct asus_wmi *asus)
1318 {
1319 int status;
1320 u32 retval;
1321
1322 switch (asus->fan_type) {
1323 case FAN_TYPE_SPEC83:
1324 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1325 0, &retval);
1326 if (status)
1327 return status;
1328
1329 if (retval != 1)
1330 return -EIO;
1331 break;
1332
1333 case FAN_TYPE_AGFN:
1334 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1335 if (status)
1336 return -ENXIO;
1337 break;
1338
1339 default:
1340 return -ENXIO;
1341 }
1342
1343
1344 return 0;
1345 }
1346
pwm1_show(struct device * dev,struct device_attribute * attr,char * buf)1347 static ssize_t pwm1_show(struct device *dev,
1348 struct device_attribute *attr,
1349 char *buf)
1350 {
1351 struct asus_wmi *asus = dev_get_drvdata(dev);
1352 int err;
1353 int value;
1354
1355 /* If we already set a value then just return it */
1356 if (asus->agfn_pwm >= 0)
1357 return sprintf(buf, "%d\n", asus->agfn_pwm);
1358
1359 /*
1360 * If we haven't set already set a value through the AGFN interface,
1361 * we read a current value through the (now-deprecated) FAN_CTRL device.
1362 */
1363 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1364 if (err < 0)
1365 return err;
1366
1367 value &= 0xFF;
1368
1369 if (value == 1) /* Low Speed */
1370 value = 85;
1371 else if (value == 2)
1372 value = 170;
1373 else if (value == 3)
1374 value = 255;
1375 else if (value) {
1376 pr_err("Unknown fan speed %#x\n", value);
1377 value = -1;
1378 }
1379
1380 return sprintf(buf, "%d\n", value);
1381 }
1382
pwm1_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1383 static ssize_t pwm1_store(struct device *dev,
1384 struct device_attribute *attr,
1385 const char *buf, size_t count) {
1386 struct asus_wmi *asus = dev_get_drvdata(dev);
1387 int value;
1388 int state;
1389 int ret;
1390
1391 ret = kstrtouint(buf, 10, &value);
1392 if (ret)
1393 return ret;
1394
1395 value = clamp(value, 0, 255);
1396
1397 state = asus_agfn_fan_speed_write(asus, 1, &value);
1398 if (state)
1399 pr_warn("Setting fan speed failed: %d\n", state);
1400 else
1401 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1402
1403 return count;
1404 }
1405
fan1_input_show(struct device * dev,struct device_attribute * attr,char * buf)1406 static ssize_t fan1_input_show(struct device *dev,
1407 struct device_attribute *attr,
1408 char *buf)
1409 {
1410 struct asus_wmi *asus = dev_get_drvdata(dev);
1411 int value;
1412 int ret;
1413
1414 switch (asus->fan_type) {
1415 case FAN_TYPE_SPEC83:
1416 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1417 &value);
1418 if (ret < 0)
1419 return ret;
1420
1421 value &= 0xffff;
1422 break;
1423
1424 case FAN_TYPE_AGFN:
1425 /* no speed readable on manual mode */
1426 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1427 return -ENXIO;
1428
1429 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1430 if (ret) {
1431 pr_warn("reading fan speed failed: %d\n", ret);
1432 return -ENXIO;
1433 }
1434 break;
1435
1436 default:
1437 return -ENXIO;
1438 }
1439
1440 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1441 }
1442
pwm1_enable_show(struct device * dev,struct device_attribute * attr,char * buf)1443 static ssize_t pwm1_enable_show(struct device *dev,
1444 struct device_attribute *attr,
1445 char *buf)
1446 {
1447 struct asus_wmi *asus = dev_get_drvdata(dev);
1448
1449 /*
1450 * Just read back the cached pwm mode.
1451 *
1452 * For the CPU_FAN device, the spec indicates that we should be
1453 * able to read the device status and consult bit 19 to see if we
1454 * are in Full On or Automatic mode. However, this does not work
1455 * in practice on X532FL at least (the bit is always 0) and there's
1456 * also nothing in the DSDT to indicate that this behaviour exists.
1457 */
1458 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1459 }
1460
pwm1_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1461 static ssize_t pwm1_enable_store(struct device *dev,
1462 struct device_attribute *attr,
1463 const char *buf, size_t count)
1464 {
1465 struct asus_wmi *asus = dev_get_drvdata(dev);
1466 int status = 0;
1467 int state;
1468 int value;
1469 int ret;
1470 u32 retval;
1471
1472 ret = kstrtouint(buf, 10, &state);
1473 if (ret)
1474 return ret;
1475
1476 if (asus->fan_type == FAN_TYPE_SPEC83) {
1477 switch (state) { /* standard documented hwmon values */
1478 case ASUS_FAN_CTRL_FULLSPEED:
1479 value = 1;
1480 break;
1481 case ASUS_FAN_CTRL_AUTO:
1482 value = 0;
1483 break;
1484 default:
1485 return -EINVAL;
1486 }
1487
1488 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1489 value, &retval);
1490 if (ret)
1491 return ret;
1492
1493 if (retval != 1)
1494 return -EIO;
1495 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1496 switch (state) {
1497 case ASUS_FAN_CTRL_MANUAL:
1498 break;
1499
1500 case ASUS_FAN_CTRL_AUTO:
1501 status = asus_fan_set_auto(asus);
1502 if (status)
1503 return status;
1504 break;
1505
1506 default:
1507 return -EINVAL;
1508 }
1509 }
1510
1511 asus->fan_pwm_mode = state;
1512 return count;
1513 }
1514
fan1_label_show(struct device * dev,struct device_attribute * attr,char * buf)1515 static ssize_t fan1_label_show(struct device *dev,
1516 struct device_attribute *attr,
1517 char *buf)
1518 {
1519 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1520 }
1521
asus_hwmon_temp1(struct device * dev,struct device_attribute * attr,char * buf)1522 static ssize_t asus_hwmon_temp1(struct device *dev,
1523 struct device_attribute *attr,
1524 char *buf)
1525 {
1526 struct asus_wmi *asus = dev_get_drvdata(dev);
1527 u32 value;
1528 int err;
1529
1530 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1531 if (err < 0)
1532 return err;
1533
1534 return sprintf(buf, "%ld\n",
1535 deci_kelvin_to_millicelsius(value & 0xFFFF));
1536 }
1537
1538 /* Fan1 */
1539 static DEVICE_ATTR_RW(pwm1);
1540 static DEVICE_ATTR_RW(pwm1_enable);
1541 static DEVICE_ATTR_RO(fan1_input);
1542 static DEVICE_ATTR_RO(fan1_label);
1543
1544 /* Temperature */
1545 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1546
1547 static struct attribute *hwmon_attributes[] = {
1548 &dev_attr_pwm1.attr,
1549 &dev_attr_pwm1_enable.attr,
1550 &dev_attr_fan1_input.attr,
1551 &dev_attr_fan1_label.attr,
1552
1553 &dev_attr_temp1_input.attr,
1554 NULL
1555 };
1556
asus_hwmon_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)1557 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1558 struct attribute *attr, int idx)
1559 {
1560 struct device *dev = container_of(kobj, struct device, kobj);
1561 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1562 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1563
1564 if (attr == &dev_attr_pwm1.attr) {
1565 if (asus->fan_type != FAN_TYPE_AGFN)
1566 return 0;
1567 } else if (attr == &dev_attr_fan1_input.attr
1568 || attr == &dev_attr_fan1_label.attr
1569 || attr == &dev_attr_pwm1_enable.attr) {
1570 if (asus->fan_type == FAN_TYPE_NONE)
1571 return 0;
1572 } else if (attr == &dev_attr_temp1_input.attr) {
1573 int err = asus_wmi_get_devstate(asus,
1574 ASUS_WMI_DEVID_THERMAL_CTRL,
1575 &value);
1576
1577 if (err < 0)
1578 return 0; /* can't return negative here */
1579
1580 /*
1581 * If the temperature value in deci-Kelvin is near the absolute
1582 * zero temperature, something is clearly wrong
1583 */
1584 if (value == 0 || value == 1)
1585 return 0;
1586 }
1587
1588 return attr->mode;
1589 }
1590
1591 static const struct attribute_group hwmon_attribute_group = {
1592 .is_visible = asus_hwmon_sysfs_is_visible,
1593 .attrs = hwmon_attributes
1594 };
1595 __ATTRIBUTE_GROUPS(hwmon_attribute);
1596
asus_wmi_hwmon_init(struct asus_wmi * asus)1597 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1598 {
1599 struct device *dev = &asus->platform_device->dev;
1600 struct device *hwmon;
1601
1602 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1603 hwmon_attribute_groups);
1604
1605 if (IS_ERR(hwmon)) {
1606 pr_err("Could not register asus hwmon device\n");
1607 return PTR_ERR(hwmon);
1608 }
1609 return 0;
1610 }
1611
asus_wmi_fan_init(struct asus_wmi * asus)1612 static int asus_wmi_fan_init(struct asus_wmi *asus)
1613 {
1614 asus->fan_type = FAN_TYPE_NONE;
1615 asus->agfn_pwm = -1;
1616
1617 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1618 asus->fan_type = FAN_TYPE_SPEC83;
1619 else if (asus_wmi_has_agfn_fan(asus))
1620 asus->fan_type = FAN_TYPE_AGFN;
1621
1622 if (asus->fan_type == FAN_TYPE_NONE)
1623 return -ENODEV;
1624
1625 asus_fan_set_auto(asus);
1626 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1627 return 0;
1628 }
1629
1630 /* Fan mode *******************************************************************/
1631
fan_boost_mode_check_present(struct asus_wmi * asus)1632 static int fan_boost_mode_check_present(struct asus_wmi *asus)
1633 {
1634 u32 result;
1635 int err;
1636
1637 asus->fan_boost_mode_available = false;
1638
1639 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1640 &result);
1641 if (err) {
1642 if (err == -ENODEV)
1643 return 0;
1644 else
1645 return err;
1646 }
1647
1648 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1649 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1650 asus->fan_boost_mode_available = true;
1651 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1652 }
1653
1654 return 0;
1655 }
1656
fan_boost_mode_write(struct asus_wmi * asus)1657 static int fan_boost_mode_write(struct asus_wmi *asus)
1658 {
1659 int err;
1660 u8 value;
1661 u32 retval;
1662
1663 value = asus->fan_boost_mode;
1664
1665 pr_info("Set fan boost mode: %u\n", value);
1666 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1667 &retval);
1668 if (err) {
1669 pr_warn("Failed to set fan boost mode: %d\n", err);
1670 return err;
1671 }
1672
1673 if (retval != 1) {
1674 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1675 retval);
1676 return -EIO;
1677 }
1678
1679 return 0;
1680 }
1681
fan_boost_mode_switch_next(struct asus_wmi * asus)1682 static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1683 {
1684 u8 mask = asus->fan_boost_mode_mask;
1685
1686 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1687 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1688 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1689 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1690 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1691 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1692 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1693 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1694 else
1695 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1696 } else {
1697 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1698 }
1699
1700 return fan_boost_mode_write(asus);
1701 }
1702
fan_boost_mode_show(struct device * dev,struct device_attribute * attr,char * buf)1703 static ssize_t fan_boost_mode_show(struct device *dev,
1704 struct device_attribute *attr, char *buf)
1705 {
1706 struct asus_wmi *asus = dev_get_drvdata(dev);
1707
1708 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1709 }
1710
fan_boost_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1711 static ssize_t fan_boost_mode_store(struct device *dev,
1712 struct device_attribute *attr,
1713 const char *buf, size_t count)
1714 {
1715 int result;
1716 u8 new_mode;
1717 struct asus_wmi *asus = dev_get_drvdata(dev);
1718 u8 mask = asus->fan_boost_mode_mask;
1719
1720 result = kstrtou8(buf, 10, &new_mode);
1721 if (result < 0) {
1722 pr_warn("Trying to store invalid value\n");
1723 return result;
1724 }
1725
1726 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1727 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1728 return -EINVAL;
1729 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1730 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1731 return -EINVAL;
1732 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1733 return -EINVAL;
1734 }
1735
1736 asus->fan_boost_mode = new_mode;
1737 fan_boost_mode_write(asus);
1738
1739 return count;
1740 }
1741
1742 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1743 static DEVICE_ATTR_RW(fan_boost_mode);
1744
1745 /* Throttle thermal policy ****************************************************/
1746
throttle_thermal_policy_check_present(struct asus_wmi * asus)1747 static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
1748 {
1749 u32 result;
1750 int err;
1751
1752 asus->throttle_thermal_policy_available = false;
1753
1754 err = asus_wmi_get_devstate(asus,
1755 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1756 &result);
1757 if (err) {
1758 if (err == -ENODEV)
1759 return 0;
1760 return err;
1761 }
1762
1763 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
1764 asus->throttle_thermal_policy_available = true;
1765
1766 return 0;
1767 }
1768
throttle_thermal_policy_write(struct asus_wmi * asus)1769 static int throttle_thermal_policy_write(struct asus_wmi *asus)
1770 {
1771 int err;
1772 u8 value;
1773 u32 retval;
1774
1775 value = asus->throttle_thermal_policy_mode;
1776
1777 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1778 value, &retval);
1779 if (err) {
1780 pr_warn("Failed to set throttle thermal policy: %d\n", err);
1781 return err;
1782 }
1783
1784 if (retval != 1) {
1785 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
1786 retval);
1787 return -EIO;
1788 }
1789
1790 return 0;
1791 }
1792
throttle_thermal_policy_set_default(struct asus_wmi * asus)1793 static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
1794 {
1795 if (!asus->throttle_thermal_policy_available)
1796 return 0;
1797
1798 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1799 return throttle_thermal_policy_write(asus);
1800 }
1801
throttle_thermal_policy_switch_next(struct asus_wmi * asus)1802 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
1803 {
1804 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
1805
1806 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1807 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1808
1809 asus->throttle_thermal_policy_mode = new_mode;
1810 return throttle_thermal_policy_write(asus);
1811 }
1812
throttle_thermal_policy_show(struct device * dev,struct device_attribute * attr,char * buf)1813 static ssize_t throttle_thermal_policy_show(struct device *dev,
1814 struct device_attribute *attr, char *buf)
1815 {
1816 struct asus_wmi *asus = dev_get_drvdata(dev);
1817 u8 mode = asus->throttle_thermal_policy_mode;
1818
1819 return scnprintf(buf, PAGE_SIZE, "%d\n", mode);
1820 }
1821
throttle_thermal_policy_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1822 static ssize_t throttle_thermal_policy_store(struct device *dev,
1823 struct device_attribute *attr,
1824 const char *buf, size_t count)
1825 {
1826 int result;
1827 u8 new_mode;
1828 struct asus_wmi *asus = dev_get_drvdata(dev);
1829
1830 result = kstrtou8(buf, 10, &new_mode);
1831 if (result < 0)
1832 return result;
1833
1834 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1835 return -EINVAL;
1836
1837 asus->throttle_thermal_policy_mode = new_mode;
1838 throttle_thermal_policy_write(asus);
1839
1840 return count;
1841 }
1842
1843 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
1844 static DEVICE_ATTR_RW(throttle_thermal_policy);
1845
1846 /* Backlight ******************************************************************/
1847
read_backlight_power(struct asus_wmi * asus)1848 static int read_backlight_power(struct asus_wmi *asus)
1849 {
1850 int ret;
1851
1852 if (asus->driver->quirks->store_backlight_power)
1853 ret = !asus->driver->panel_power;
1854 else
1855 ret = asus_wmi_get_devstate_simple(asus,
1856 ASUS_WMI_DEVID_BACKLIGHT);
1857
1858 if (ret < 0)
1859 return ret;
1860
1861 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1862 }
1863
read_brightness_max(struct asus_wmi * asus)1864 static int read_brightness_max(struct asus_wmi *asus)
1865 {
1866 u32 retval;
1867 int err;
1868
1869 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1870 if (err < 0)
1871 return err;
1872
1873 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1874 retval >>= 8;
1875
1876 if (!retval)
1877 return -ENODEV;
1878
1879 return retval;
1880 }
1881
read_brightness(struct backlight_device * bd)1882 static int read_brightness(struct backlight_device *bd)
1883 {
1884 struct asus_wmi *asus = bl_get_data(bd);
1885 u32 retval;
1886 int err;
1887
1888 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1889 if (err < 0)
1890 return err;
1891
1892 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1893 }
1894
get_scalar_command(struct backlight_device * bd)1895 static u32 get_scalar_command(struct backlight_device *bd)
1896 {
1897 struct asus_wmi *asus = bl_get_data(bd);
1898 u32 ctrl_param = 0;
1899
1900 if ((asus->driver->brightness < bd->props.brightness) ||
1901 bd->props.brightness == bd->props.max_brightness)
1902 ctrl_param = 0x00008001;
1903 else if ((asus->driver->brightness > bd->props.brightness) ||
1904 bd->props.brightness == 0)
1905 ctrl_param = 0x00008000;
1906
1907 asus->driver->brightness = bd->props.brightness;
1908
1909 return ctrl_param;
1910 }
1911
update_bl_status(struct backlight_device * bd)1912 static int update_bl_status(struct backlight_device *bd)
1913 {
1914 struct asus_wmi *asus = bl_get_data(bd);
1915 u32 ctrl_param;
1916 int power, err = 0;
1917
1918 power = read_backlight_power(asus);
1919 if (power != -ENODEV && bd->props.power != power) {
1920 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1921 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1922 ctrl_param, NULL);
1923 if (asus->driver->quirks->store_backlight_power)
1924 asus->driver->panel_power = bd->props.power;
1925
1926 /* When using scalar brightness, updating the brightness
1927 * will mess with the backlight power */
1928 if (asus->driver->quirks->scalar_panel_brightness)
1929 return err;
1930 }
1931
1932 if (asus->driver->quirks->scalar_panel_brightness)
1933 ctrl_param = get_scalar_command(bd);
1934 else
1935 ctrl_param = bd->props.brightness;
1936
1937 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1938 ctrl_param, NULL);
1939
1940 return err;
1941 }
1942
1943 static const struct backlight_ops asus_wmi_bl_ops = {
1944 .get_brightness = read_brightness,
1945 .update_status = update_bl_status,
1946 };
1947
asus_wmi_backlight_notify(struct asus_wmi * asus,int code)1948 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1949 {
1950 struct backlight_device *bd = asus->backlight_device;
1951 int old = bd->props.brightness;
1952 int new = old;
1953
1954 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1955 new = code - NOTIFY_BRNUP_MIN + 1;
1956 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1957 new = code - NOTIFY_BRNDOWN_MIN;
1958
1959 bd->props.brightness = new;
1960 backlight_update_status(bd);
1961 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1962
1963 return old;
1964 }
1965
asus_wmi_backlight_init(struct asus_wmi * asus)1966 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1967 {
1968 struct backlight_device *bd;
1969 struct backlight_properties props;
1970 int max;
1971 int power;
1972
1973 max = read_brightness_max(asus);
1974 if (max < 0)
1975 return max;
1976
1977 power = read_backlight_power(asus);
1978 if (power == -ENODEV)
1979 power = FB_BLANK_UNBLANK;
1980 else if (power < 0)
1981 return power;
1982
1983 memset(&props, 0, sizeof(struct backlight_properties));
1984 props.type = BACKLIGHT_PLATFORM;
1985 props.max_brightness = max;
1986 bd = backlight_device_register(asus->driver->name,
1987 &asus->platform_device->dev, asus,
1988 &asus_wmi_bl_ops, &props);
1989 if (IS_ERR(bd)) {
1990 pr_err("Could not register backlight device\n");
1991 return PTR_ERR(bd);
1992 }
1993
1994 asus->backlight_device = bd;
1995
1996 if (asus->driver->quirks->store_backlight_power)
1997 asus->driver->panel_power = power;
1998
1999 bd->props.brightness = read_brightness(bd);
2000 bd->props.power = power;
2001 backlight_update_status(bd);
2002
2003 asus->driver->brightness = bd->props.brightness;
2004
2005 return 0;
2006 }
2007
asus_wmi_backlight_exit(struct asus_wmi * asus)2008 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
2009 {
2010 backlight_device_unregister(asus->backlight_device);
2011
2012 asus->backlight_device = NULL;
2013 }
2014
is_display_toggle(int code)2015 static int is_display_toggle(int code)
2016 {
2017 /* display toggle keys */
2018 if ((code >= 0x61 && code <= 0x67) ||
2019 (code >= 0x8c && code <= 0x93) ||
2020 (code >= 0xa0 && code <= 0xa7) ||
2021 (code >= 0xd0 && code <= 0xd5))
2022 return 1;
2023
2024 return 0;
2025 }
2026
2027 /* Fn-lock ********************************************************************/
2028
asus_wmi_has_fnlock_key(struct asus_wmi * asus)2029 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
2030 {
2031 u32 result;
2032
2033 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
2034
2035 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2036 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
2037 }
2038
asus_wmi_fnlock_update(struct asus_wmi * asus)2039 static void asus_wmi_fnlock_update(struct asus_wmi *asus)
2040 {
2041 int mode = asus->fnlock_locked;
2042
2043 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
2044 }
2045
2046 /* WMI events *****************************************************************/
2047
asus_wmi_get_event_code(u32 value)2048 static int asus_wmi_get_event_code(u32 value)
2049 {
2050 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
2051 union acpi_object *obj;
2052 acpi_status status;
2053 int code;
2054
2055 status = wmi_get_event_data(value, &response);
2056 if (ACPI_FAILURE(status)) {
2057 pr_warn("Failed to get WMI notify code: %s\n",
2058 acpi_format_exception(status));
2059 return -EIO;
2060 }
2061
2062 obj = (union acpi_object *)response.pointer;
2063
2064 if (obj && obj->type == ACPI_TYPE_INTEGER)
2065 code = (int)(obj->integer.value & WMI_EVENT_MASK);
2066 else
2067 code = -EIO;
2068
2069 kfree(obj);
2070 return code;
2071 }
2072
asus_wmi_handle_event_code(int code,struct asus_wmi * asus)2073 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
2074 {
2075 unsigned int key_value = 1;
2076 bool autorelease = 1;
2077 int result, orig_code;
2078
2079 orig_code = code;
2080
2081 if (asus->driver->key_filter) {
2082 asus->driver->key_filter(asus->driver, &code, &key_value,
2083 &autorelease);
2084 if (code == ASUS_WMI_KEY_IGNORE)
2085 return;
2086 }
2087
2088 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
2089 code = ASUS_WMI_BRN_UP;
2090 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
2091 code = ASUS_WMI_BRN_DOWN;
2092
2093 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
2094 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2095 asus_wmi_backlight_notify(asus, orig_code);
2096 return;
2097 }
2098 }
2099
2100 if (code == NOTIFY_KBD_BRTUP) {
2101 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2102 return;
2103 }
2104 if (code == NOTIFY_KBD_BRTDWN) {
2105 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
2106 return;
2107 }
2108 if (code == NOTIFY_KBD_BRTTOGGLE) {
2109 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
2110 kbd_led_set_by_kbd(asus, 0);
2111 else
2112 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2113 return;
2114 }
2115
2116 if (code == NOTIFY_FNLOCK_TOGGLE) {
2117 asus->fnlock_locked = !asus->fnlock_locked;
2118 asus_wmi_fnlock_update(asus);
2119 return;
2120 }
2121
2122 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
2123 result = asus_wmi_get_devstate_simple(asus,
2124 ASUS_WMI_DEVID_KBD_DOCK);
2125 if (result >= 0) {
2126 input_report_switch(asus->inputdev, SW_TABLET_MODE,
2127 !result);
2128 input_sync(asus->inputdev);
2129 }
2130 return;
2131 }
2132
2133 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2134 fan_boost_mode_switch_next(asus);
2135 return;
2136 }
2137
2138 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) {
2139 throttle_thermal_policy_switch_next(asus);
2140 return;
2141 }
2142
2143 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2144 return;
2145
2146 if (!sparse_keymap_report_event(asus->inputdev, code,
2147 key_value, autorelease))
2148 pr_info("Unknown key %x pressed\n", code);
2149 }
2150
asus_wmi_notify(u32 value,void * context)2151 static void asus_wmi_notify(u32 value, void *context)
2152 {
2153 struct asus_wmi *asus = context;
2154 int code;
2155 int i;
2156
2157 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2158 code = asus_wmi_get_event_code(value);
2159 if (code < 0) {
2160 pr_warn("Failed to get notify code: %d\n", code);
2161 return;
2162 }
2163
2164 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2165 return;
2166
2167 asus_wmi_handle_event_code(code, asus);
2168
2169 /*
2170 * Double check that queue is present:
2171 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2172 */
2173 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2174 return;
2175 }
2176
2177 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2178 }
2179
asus_wmi_notify_queue_flush(struct asus_wmi * asus)2180 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2181 {
2182 int code;
2183 int i;
2184
2185 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2186 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2187 if (code < 0) {
2188 pr_warn("Failed to get event during flush: %d\n", code);
2189 return code;
2190 }
2191
2192 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2193 return 0;
2194 }
2195
2196 pr_warn("Failed to flush event queue\n");
2197 return -EIO;
2198 }
2199
2200 /* Sysfs **********************************************************************/
2201
store_sys_wmi(struct asus_wmi * asus,int devid,const char * buf,size_t count)2202 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2203 const char *buf, size_t count)
2204 {
2205 u32 retval;
2206 int err, value;
2207
2208 value = asus_wmi_get_devstate_simple(asus, devid);
2209 if (value < 0)
2210 return value;
2211
2212 err = kstrtoint(buf, 0, &value);
2213 if (err)
2214 return err;
2215
2216 err = asus_wmi_set_devstate(devid, value, &retval);
2217 if (err < 0)
2218 return err;
2219
2220 return count;
2221 }
2222
show_sys_wmi(struct asus_wmi * asus,int devid,char * buf)2223 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2224 {
2225 int value = asus_wmi_get_devstate_simple(asus, devid);
2226
2227 if (value < 0)
2228 return value;
2229
2230 return sprintf(buf, "%d\n", value);
2231 }
2232
2233 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2234 static ssize_t show_##_name(struct device *dev, \
2235 struct device_attribute *attr, \
2236 char *buf) \
2237 { \
2238 struct asus_wmi *asus = dev_get_drvdata(dev); \
2239 \
2240 return show_sys_wmi(asus, _cm, buf); \
2241 } \
2242 static ssize_t store_##_name(struct device *dev, \
2243 struct device_attribute *attr, \
2244 const char *buf, size_t count) \
2245 { \
2246 struct asus_wmi *asus = dev_get_drvdata(dev); \
2247 \
2248 return store_sys_wmi(asus, _cm, buf, count); \
2249 } \
2250 static struct device_attribute dev_attr_##_name = { \
2251 .attr = { \
2252 .name = __stringify(_name), \
2253 .mode = _mode }, \
2254 .show = show_##_name, \
2255 .store = store_##_name, \
2256 }
2257
2258 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2259 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2260 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2261 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2262 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2263
cpufv_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2264 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2265 const char *buf, size_t count)
2266 {
2267 int value, rv;
2268
2269 rv = kstrtoint(buf, 0, &value);
2270 if (rv)
2271 return rv;
2272
2273 if (value < 0 || value > 2)
2274 return -EINVAL;
2275
2276 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2277 if (rv < 0)
2278 return rv;
2279
2280 return count;
2281 }
2282
2283 static DEVICE_ATTR_WO(cpufv);
2284
2285 static struct attribute *platform_attributes[] = {
2286 &dev_attr_cpufv.attr,
2287 &dev_attr_camera.attr,
2288 &dev_attr_cardr.attr,
2289 &dev_attr_touchpad.attr,
2290 &dev_attr_lid_resume.attr,
2291 &dev_attr_als_enable.attr,
2292 &dev_attr_fan_boost_mode.attr,
2293 &dev_attr_throttle_thermal_policy.attr,
2294 NULL
2295 };
2296
asus_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)2297 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2298 struct attribute *attr, int idx)
2299 {
2300 struct device *dev = container_of(kobj, struct device, kobj);
2301 struct asus_wmi *asus = dev_get_drvdata(dev);
2302 bool ok = true;
2303 int devid = -1;
2304
2305 if (attr == &dev_attr_camera.attr)
2306 devid = ASUS_WMI_DEVID_CAMERA;
2307 else if (attr == &dev_attr_cardr.attr)
2308 devid = ASUS_WMI_DEVID_CARDREADER;
2309 else if (attr == &dev_attr_touchpad.attr)
2310 devid = ASUS_WMI_DEVID_TOUCHPAD;
2311 else if (attr == &dev_attr_lid_resume.attr)
2312 devid = ASUS_WMI_DEVID_LID_RESUME;
2313 else if (attr == &dev_attr_als_enable.attr)
2314 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2315 else if (attr == &dev_attr_fan_boost_mode.attr)
2316 ok = asus->fan_boost_mode_available;
2317 else if (attr == &dev_attr_throttle_thermal_policy.attr)
2318 ok = asus->throttle_thermal_policy_available;
2319
2320 if (devid != -1)
2321 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2322
2323 return ok ? attr->mode : 0;
2324 }
2325
2326 static const struct attribute_group platform_attribute_group = {
2327 .is_visible = asus_sysfs_is_visible,
2328 .attrs = platform_attributes
2329 };
2330
asus_wmi_sysfs_exit(struct platform_device * device)2331 static void asus_wmi_sysfs_exit(struct platform_device *device)
2332 {
2333 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2334 }
2335
asus_wmi_sysfs_init(struct platform_device * device)2336 static int asus_wmi_sysfs_init(struct platform_device *device)
2337 {
2338 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2339 }
2340
2341 /* Platform device ************************************************************/
2342
asus_wmi_platform_init(struct asus_wmi * asus)2343 static int asus_wmi_platform_init(struct asus_wmi *asus)
2344 {
2345 struct device *dev = &asus->platform_device->dev;
2346 char *wmi_uid;
2347 int rv;
2348
2349 /* INIT enable hotkeys on some models */
2350 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2351 pr_info("Initialization: %#x\n", rv);
2352
2353 /* We don't know yet what to do with this version... */
2354 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2355 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2356 asus->spec = rv;
2357 }
2358
2359 /*
2360 * The SFUN method probably allows the original driver to get the list
2361 * of features supported by a given model. For now, 0x0100 or 0x0800
2362 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2363 * The significance of others is yet to be found.
2364 */
2365 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2366 pr_info("SFUN value: %#x\n", rv);
2367 asus->sfun = rv;
2368 }
2369
2370 /*
2371 * Eee PC and Notebooks seems to have different method_id for DSTS,
2372 * but it may also be related to the BIOS's SPEC.
2373 * Note, on most Eeepc, there is no way to check if a method exist
2374 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2375 * but once again, SPEC may probably be used for that kind of things.
2376 *
2377 * Additionally at least TUF Gaming series laptops return nothing for
2378 * unknown methods, so the detection in this way is not possible.
2379 *
2380 * There is strong indication that only ACPI WMI devices that have _UID
2381 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2382 */
2383 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2384 if (!wmi_uid)
2385 return -ENODEV;
2386
2387 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2388 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2389 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2390 } else {
2391 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2392 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2393 }
2394
2395 /*
2396 * Some devices can have multiple event codes stored in a queue before
2397 * the module load if it was unloaded intermittently after calling
2398 * the INIT method (enables event handling). The WMI notify handler is
2399 * expected to retrieve all event codes until a retrieved code equals
2400 * queue end marker (One or Ones). Old codes are flushed from the queue
2401 * upon module load. Not enabling this when it should be has minimal
2402 * visible impact so fall back if anything goes wrong.
2403 */
2404 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2405 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2406 dev_info(dev, "Detected ATK, enable event queue\n");
2407
2408 if (!asus_wmi_notify_queue_flush(asus))
2409 asus->wmi_event_queue = true;
2410 }
2411
2412 /* CWAP allow to define the behavior of the Fn+F2 key,
2413 * this method doesn't seems to be present on Eee PCs */
2414 if (asus->driver->quirks->wapf >= 0)
2415 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2416 asus->driver->quirks->wapf, NULL);
2417
2418 return 0;
2419 }
2420
2421 /* debugfs ********************************************************************/
2422
2423 struct asus_wmi_debugfs_node {
2424 struct asus_wmi *asus;
2425 char *name;
2426 int (*show) (struct seq_file *m, void *data);
2427 };
2428
show_dsts(struct seq_file * m,void * data)2429 static int show_dsts(struct seq_file *m, void *data)
2430 {
2431 struct asus_wmi *asus = m->private;
2432 int err;
2433 u32 retval = -1;
2434
2435 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2436 if (err < 0)
2437 return err;
2438
2439 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2440
2441 return 0;
2442 }
2443
show_devs(struct seq_file * m,void * data)2444 static int show_devs(struct seq_file *m, void *data)
2445 {
2446 struct asus_wmi *asus = m->private;
2447 int err;
2448 u32 retval = -1;
2449
2450 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2451 &retval);
2452 if (err < 0)
2453 return err;
2454
2455 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2456 asus->debug.ctrl_param, retval);
2457
2458 return 0;
2459 }
2460
show_call(struct seq_file * m,void * data)2461 static int show_call(struct seq_file *m, void *data)
2462 {
2463 struct asus_wmi *asus = m->private;
2464 struct bios_args args = {
2465 .arg0 = asus->debug.dev_id,
2466 .arg1 = asus->debug.ctrl_param,
2467 };
2468 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2469 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2470 union acpi_object *obj;
2471 acpi_status status;
2472
2473 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2474 0, asus->debug.method_id,
2475 &input, &output);
2476
2477 if (ACPI_FAILURE(status))
2478 return -EIO;
2479
2480 obj = (union acpi_object *)output.pointer;
2481 if (obj && obj->type == ACPI_TYPE_INTEGER)
2482 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2483 asus->debug.dev_id, asus->debug.ctrl_param,
2484 (u32) obj->integer.value);
2485 else
2486 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2487 asus->debug.dev_id, asus->debug.ctrl_param,
2488 obj ? obj->type : -1);
2489
2490 kfree(obj);
2491
2492 return 0;
2493 }
2494
2495 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2496 {NULL, "devs", show_devs},
2497 {NULL, "dsts", show_dsts},
2498 {NULL, "call", show_call},
2499 };
2500
asus_wmi_debugfs_open(struct inode * inode,struct file * file)2501 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2502 {
2503 struct asus_wmi_debugfs_node *node = inode->i_private;
2504
2505 return single_open(file, node->show, node->asus);
2506 }
2507
2508 static const struct file_operations asus_wmi_debugfs_io_ops = {
2509 .owner = THIS_MODULE,
2510 .open = asus_wmi_debugfs_open,
2511 .read = seq_read,
2512 .llseek = seq_lseek,
2513 .release = single_release,
2514 };
2515
asus_wmi_debugfs_exit(struct asus_wmi * asus)2516 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2517 {
2518 debugfs_remove_recursive(asus->debug.root);
2519 }
2520
asus_wmi_debugfs_init(struct asus_wmi * asus)2521 static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2522 {
2523 int i;
2524
2525 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2526
2527 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2528 &asus->debug.method_id);
2529
2530 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2531 &asus->debug.dev_id);
2532
2533 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2534 &asus->debug.ctrl_param);
2535
2536 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2537 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2538
2539 node->asus = asus;
2540 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2541 asus->debug.root, node,
2542 &asus_wmi_debugfs_io_ops);
2543 }
2544 }
2545
2546 /* Init / exit ****************************************************************/
2547
asus_wmi_add(struct platform_device * pdev)2548 static int asus_wmi_add(struct platform_device *pdev)
2549 {
2550 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2551 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2552 struct asus_wmi *asus;
2553 const char *chassis_type;
2554 acpi_status status;
2555 int err;
2556 u32 result;
2557
2558 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2559 if (!asus)
2560 return -ENOMEM;
2561
2562 asus->driver = wdrv;
2563 asus->platform_device = pdev;
2564 wdrv->platform_device = pdev;
2565 platform_set_drvdata(asus->platform_device, asus);
2566
2567 if (wdrv->detect_quirks)
2568 wdrv->detect_quirks(asus->driver);
2569
2570 err = asus_wmi_platform_init(asus);
2571 if (err)
2572 goto fail_platform;
2573
2574 err = fan_boost_mode_check_present(asus);
2575 if (err)
2576 goto fail_fan_boost_mode;
2577
2578 err = throttle_thermal_policy_check_present(asus);
2579 if (err)
2580 goto fail_throttle_thermal_policy;
2581 else
2582 throttle_thermal_policy_set_default(asus);
2583
2584 err = asus_wmi_sysfs_init(asus->platform_device);
2585 if (err)
2586 goto fail_sysfs;
2587
2588 err = asus_wmi_input_init(asus);
2589 if (err)
2590 goto fail_input;
2591
2592 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2593
2594 err = asus_wmi_hwmon_init(asus);
2595 if (err)
2596 goto fail_hwmon;
2597
2598 err = asus_wmi_led_init(asus);
2599 if (err)
2600 goto fail_leds;
2601
2602 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2603 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2604 asus->driver->wlan_ctrl_by_user = 1;
2605
2606 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2607 err = asus_wmi_rfkill_init(asus);
2608 if (err)
2609 goto fail_rfkill;
2610 }
2611
2612 if (asus->driver->quirks->wmi_force_als_set)
2613 asus_wmi_set_als();
2614
2615 /* Some Asus desktop boards export an acpi-video backlight interface,
2616 stop this from showing up */
2617 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2618 if (chassis_type && !strcmp(chassis_type, "3"))
2619 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2620
2621 if (asus->driver->quirks->wmi_backlight_power)
2622 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2623
2624 if (asus->driver->quirks->wmi_backlight_native)
2625 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2626
2627 if (asus->driver->quirks->xusb2pr)
2628 asus_wmi_set_xusb2pr(asus);
2629
2630 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2631 err = asus_wmi_backlight_init(asus);
2632 if (err && err != -ENODEV)
2633 goto fail_backlight;
2634 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2635 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2636
2637 if (asus_wmi_has_fnlock_key(asus)) {
2638 asus->fnlock_locked = true;
2639 asus_wmi_fnlock_update(asus);
2640 }
2641
2642 status = wmi_install_notify_handler(asus->driver->event_guid,
2643 asus_wmi_notify, asus);
2644 if (ACPI_FAILURE(status)) {
2645 pr_err("Unable to register notify handler - %d\n", status);
2646 err = -ENODEV;
2647 goto fail_wmi_handler;
2648 }
2649
2650 asus_wmi_battery_init(asus);
2651
2652 asus_wmi_debugfs_init(asus);
2653
2654 return 0;
2655
2656 fail_wmi_handler:
2657 asus_wmi_backlight_exit(asus);
2658 fail_backlight:
2659 asus_wmi_rfkill_exit(asus);
2660 fail_rfkill:
2661 asus_wmi_led_exit(asus);
2662 fail_leds:
2663 fail_hwmon:
2664 asus_wmi_input_exit(asus);
2665 fail_input:
2666 asus_wmi_sysfs_exit(asus->platform_device);
2667 fail_sysfs:
2668 fail_throttle_thermal_policy:
2669 fail_fan_boost_mode:
2670 fail_platform:
2671 kfree(asus);
2672 return err;
2673 }
2674
asus_wmi_remove(struct platform_device * device)2675 static int asus_wmi_remove(struct platform_device *device)
2676 {
2677 struct asus_wmi *asus;
2678
2679 asus = platform_get_drvdata(device);
2680 wmi_remove_notify_handler(asus->driver->event_guid);
2681 asus_wmi_backlight_exit(asus);
2682 asus_wmi_input_exit(asus);
2683 asus_wmi_led_exit(asus);
2684 asus_wmi_rfkill_exit(asus);
2685 asus_wmi_debugfs_exit(asus);
2686 asus_wmi_sysfs_exit(asus->platform_device);
2687 asus_fan_set_auto(asus);
2688 asus_wmi_battery_exit(asus);
2689
2690 kfree(asus);
2691 return 0;
2692 }
2693
2694 /* Platform driver - hibernate/resume callbacks *******************************/
2695
asus_hotk_thaw(struct device * device)2696 static int asus_hotk_thaw(struct device *device)
2697 {
2698 struct asus_wmi *asus = dev_get_drvdata(device);
2699
2700 if (asus->wlan.rfkill) {
2701 bool wlan;
2702
2703 /*
2704 * Work around bios bug - acpi _PTS turns off the wireless led
2705 * during suspend. Normally it restores it on resume, but
2706 * we should kick it ourselves in case hibernation is aborted.
2707 */
2708 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2709 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2710 }
2711
2712 return 0;
2713 }
2714
asus_hotk_resume(struct device * device)2715 static int asus_hotk_resume(struct device *device)
2716 {
2717 struct asus_wmi *asus = dev_get_drvdata(device);
2718
2719 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2720 kbd_led_update(asus);
2721
2722 if (asus_wmi_has_fnlock_key(asus))
2723 asus_wmi_fnlock_update(asus);
2724 return 0;
2725 }
2726
asus_hotk_restore(struct device * device)2727 static int asus_hotk_restore(struct device *device)
2728 {
2729 struct asus_wmi *asus = dev_get_drvdata(device);
2730 int bl;
2731
2732 /* Refresh both wlan rfkill state and pci hotplug */
2733 if (asus->wlan.rfkill)
2734 asus_rfkill_hotplug(asus);
2735
2736 if (asus->bluetooth.rfkill) {
2737 bl = !asus_wmi_get_devstate_simple(asus,
2738 ASUS_WMI_DEVID_BLUETOOTH);
2739 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2740 }
2741 if (asus->wimax.rfkill) {
2742 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2743 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2744 }
2745 if (asus->wwan3g.rfkill) {
2746 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2747 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2748 }
2749 if (asus->gps.rfkill) {
2750 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2751 rfkill_set_sw_state(asus->gps.rfkill, bl);
2752 }
2753 if (asus->uwb.rfkill) {
2754 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2755 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2756 }
2757 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2758 kbd_led_update(asus);
2759
2760 if (asus_wmi_has_fnlock_key(asus))
2761 asus_wmi_fnlock_update(asus);
2762 return 0;
2763 }
2764
2765 static const struct dev_pm_ops asus_pm_ops = {
2766 .thaw = asus_hotk_thaw,
2767 .restore = asus_hotk_restore,
2768 .resume = asus_hotk_resume,
2769 };
2770
2771 /* Registration ***************************************************************/
2772
asus_wmi_probe(struct platform_device * pdev)2773 static int asus_wmi_probe(struct platform_device *pdev)
2774 {
2775 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2776 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2777 int ret;
2778
2779 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2780 pr_warn("ASUS Management GUID not found\n");
2781 return -ENODEV;
2782 }
2783
2784 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2785 pr_warn("ASUS Event GUID not found\n");
2786 return -ENODEV;
2787 }
2788
2789 if (wdrv->probe) {
2790 ret = wdrv->probe(pdev);
2791 if (ret)
2792 return ret;
2793 }
2794
2795 return asus_wmi_add(pdev);
2796 }
2797
2798 static bool used;
2799
asus_wmi_register_driver(struct asus_wmi_driver * driver)2800 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2801 {
2802 struct platform_driver *platform_driver;
2803 struct platform_device *platform_device;
2804
2805 if (used)
2806 return -EBUSY;
2807
2808 platform_driver = &driver->platform_driver;
2809 platform_driver->remove = asus_wmi_remove;
2810 platform_driver->driver.owner = driver->owner;
2811 platform_driver->driver.name = driver->name;
2812 platform_driver->driver.pm = &asus_pm_ops;
2813
2814 platform_device = platform_create_bundle(platform_driver,
2815 asus_wmi_probe,
2816 NULL, 0, NULL, 0);
2817 if (IS_ERR(platform_device))
2818 return PTR_ERR(platform_device);
2819
2820 used = true;
2821 return 0;
2822 }
2823 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2824
asus_wmi_unregister_driver(struct asus_wmi_driver * driver)2825 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2826 {
2827 platform_device_unregister(driver->platform_device);
2828 platform_driver_unregister(&driver->platform_driver);
2829 used = false;
2830 }
2831 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2832
asus_wmi_init(void)2833 static int __init asus_wmi_init(void)
2834 {
2835 pr_info("ASUS WMI generic driver loaded\n");
2836 return 0;
2837 }
2838
asus_wmi_exit(void)2839 static void __exit asus_wmi_exit(void)
2840 {
2841 pr_info("ASUS WMI generic driver unloaded\n");
2842 }
2843
2844 module_init(asus_wmi_init);
2845 module_exit(asus_wmi_exit);
2846