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 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1216 orig_ports_available, ports_available);
1217 }
1218
1219 /*
1220 * Some devices dont support or have borcken get_als method
1221 * but still support set method.
1222 */
asus_wmi_set_als(void)1223 static void asus_wmi_set_als(void)
1224 {
1225 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1226 }
1227
1228 /* Hwmon device ***************************************************************/
1229
asus_agfn_fan_speed_read(struct asus_wmi * asus,int fan,int * speed)1230 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1231 int *speed)
1232 {
1233 struct agfn_fan_args args = {
1234 .agfn.len = sizeof(args),
1235 .agfn.mfun = ASUS_FAN_MFUN,
1236 .agfn.sfun = ASUS_FAN_SFUN_READ,
1237 .fan = fan,
1238 .speed = 0,
1239 };
1240 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1241 int status;
1242
1243 if (fan != 1)
1244 return -EINVAL;
1245
1246 status = asus_wmi_evaluate_method_agfn(input);
1247
1248 if (status || args.agfn.err)
1249 return -ENXIO;
1250
1251 if (speed)
1252 *speed = args.speed;
1253
1254 return 0;
1255 }
1256
asus_agfn_fan_speed_write(struct asus_wmi * asus,int fan,int * speed)1257 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1258 int *speed)
1259 {
1260 struct agfn_fan_args args = {
1261 .agfn.len = sizeof(args),
1262 .agfn.mfun = ASUS_FAN_MFUN,
1263 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1264 .fan = fan,
1265 .speed = speed ? *speed : 0,
1266 };
1267 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1268 int status;
1269
1270 /* 1: for setting 1st fan's speed 0: setting auto mode */
1271 if (fan != 1 && fan != 0)
1272 return -EINVAL;
1273
1274 status = asus_wmi_evaluate_method_agfn(input);
1275
1276 if (status || args.agfn.err)
1277 return -ENXIO;
1278
1279 if (speed && fan == 1)
1280 asus->agfn_pwm = *speed;
1281
1282 return 0;
1283 }
1284
1285 /*
1286 * Check if we can read the speed of one fan. If true we assume we can also
1287 * control it.
1288 */
asus_wmi_has_agfn_fan(struct asus_wmi * asus)1289 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1290 {
1291 int status;
1292 int speed;
1293 u32 value;
1294
1295 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1296 if (status != 0)
1297 return false;
1298
1299 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1300 if (status != 0)
1301 return false;
1302
1303 /*
1304 * We need to find a better way, probably using sfun,
1305 * bits or spec ...
1306 * Currently we disable it if:
1307 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1308 * - reverved bits are non-zero
1309 * - sfun and presence bit are not set
1310 */
1311 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1312 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1313 }
1314
asus_fan_set_auto(struct asus_wmi * asus)1315 static int asus_fan_set_auto(struct asus_wmi *asus)
1316 {
1317 int status;
1318 u32 retval;
1319
1320 switch (asus->fan_type) {
1321 case FAN_TYPE_SPEC83:
1322 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1323 0, &retval);
1324 if (status)
1325 return status;
1326
1327 if (retval != 1)
1328 return -EIO;
1329 break;
1330
1331 case FAN_TYPE_AGFN:
1332 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1333 if (status)
1334 return -ENXIO;
1335 break;
1336
1337 default:
1338 return -ENXIO;
1339 }
1340
1341
1342 return 0;
1343 }
1344
pwm1_show(struct device * dev,struct device_attribute * attr,char * buf)1345 static ssize_t pwm1_show(struct device *dev,
1346 struct device_attribute *attr,
1347 char *buf)
1348 {
1349 struct asus_wmi *asus = dev_get_drvdata(dev);
1350 int err;
1351 int value;
1352
1353 /* If we already set a value then just return it */
1354 if (asus->agfn_pwm >= 0)
1355 return sprintf(buf, "%d\n", asus->agfn_pwm);
1356
1357 /*
1358 * If we haven't set already set a value through the AGFN interface,
1359 * we read a current value through the (now-deprecated) FAN_CTRL device.
1360 */
1361 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1362 if (err < 0)
1363 return err;
1364
1365 value &= 0xFF;
1366
1367 if (value == 1) /* Low Speed */
1368 value = 85;
1369 else if (value == 2)
1370 value = 170;
1371 else if (value == 3)
1372 value = 255;
1373 else if (value) {
1374 pr_err("Unknown fan speed %#x\n", value);
1375 value = -1;
1376 }
1377
1378 return sprintf(buf, "%d\n", value);
1379 }
1380
pwm1_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1381 static ssize_t pwm1_store(struct device *dev,
1382 struct device_attribute *attr,
1383 const char *buf, size_t count) {
1384 struct asus_wmi *asus = dev_get_drvdata(dev);
1385 int value;
1386 int state;
1387 int ret;
1388
1389 ret = kstrtouint(buf, 10, &value);
1390 if (ret)
1391 return ret;
1392
1393 value = clamp(value, 0, 255);
1394
1395 state = asus_agfn_fan_speed_write(asus, 1, &value);
1396 if (state)
1397 pr_warn("Setting fan speed failed: %d\n", state);
1398 else
1399 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1400
1401 return count;
1402 }
1403
fan1_input_show(struct device * dev,struct device_attribute * attr,char * buf)1404 static ssize_t fan1_input_show(struct device *dev,
1405 struct device_attribute *attr,
1406 char *buf)
1407 {
1408 struct asus_wmi *asus = dev_get_drvdata(dev);
1409 int value;
1410 int ret;
1411
1412 switch (asus->fan_type) {
1413 case FAN_TYPE_SPEC83:
1414 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1415 &value);
1416 if (ret < 0)
1417 return ret;
1418
1419 value &= 0xffff;
1420 break;
1421
1422 case FAN_TYPE_AGFN:
1423 /* no speed readable on manual mode */
1424 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1425 return -ENXIO;
1426
1427 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1428 if (ret) {
1429 pr_warn("reading fan speed failed: %d\n", ret);
1430 return -ENXIO;
1431 }
1432 break;
1433
1434 default:
1435 return -ENXIO;
1436 }
1437
1438 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1439 }
1440
pwm1_enable_show(struct device * dev,struct device_attribute * attr,char * buf)1441 static ssize_t pwm1_enable_show(struct device *dev,
1442 struct device_attribute *attr,
1443 char *buf)
1444 {
1445 struct asus_wmi *asus = dev_get_drvdata(dev);
1446
1447 /*
1448 * Just read back the cached pwm mode.
1449 *
1450 * For the CPU_FAN device, the spec indicates that we should be
1451 * able to read the device status and consult bit 19 to see if we
1452 * are in Full On or Automatic mode. However, this does not work
1453 * in practice on X532FL at least (the bit is always 0) and there's
1454 * also nothing in the DSDT to indicate that this behaviour exists.
1455 */
1456 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1457 }
1458
pwm1_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1459 static ssize_t pwm1_enable_store(struct device *dev,
1460 struct device_attribute *attr,
1461 const char *buf, size_t count)
1462 {
1463 struct asus_wmi *asus = dev_get_drvdata(dev);
1464 int status = 0;
1465 int state;
1466 int value;
1467 int ret;
1468 u32 retval;
1469
1470 ret = kstrtouint(buf, 10, &state);
1471 if (ret)
1472 return ret;
1473
1474 if (asus->fan_type == FAN_TYPE_SPEC83) {
1475 switch (state) { /* standard documented hwmon values */
1476 case ASUS_FAN_CTRL_FULLSPEED:
1477 value = 1;
1478 break;
1479 case ASUS_FAN_CTRL_AUTO:
1480 value = 0;
1481 break;
1482 default:
1483 return -EINVAL;
1484 }
1485
1486 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1487 value, &retval);
1488 if (ret)
1489 return ret;
1490
1491 if (retval != 1)
1492 return -EIO;
1493 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1494 switch (state) {
1495 case ASUS_FAN_CTRL_MANUAL:
1496 break;
1497
1498 case ASUS_FAN_CTRL_AUTO:
1499 status = asus_fan_set_auto(asus);
1500 if (status)
1501 return status;
1502 break;
1503
1504 default:
1505 return -EINVAL;
1506 }
1507 }
1508
1509 asus->fan_pwm_mode = state;
1510 return count;
1511 }
1512
fan1_label_show(struct device * dev,struct device_attribute * attr,char * buf)1513 static ssize_t fan1_label_show(struct device *dev,
1514 struct device_attribute *attr,
1515 char *buf)
1516 {
1517 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1518 }
1519
asus_hwmon_temp1(struct device * dev,struct device_attribute * attr,char * buf)1520 static ssize_t asus_hwmon_temp1(struct device *dev,
1521 struct device_attribute *attr,
1522 char *buf)
1523 {
1524 struct asus_wmi *asus = dev_get_drvdata(dev);
1525 u32 value;
1526 int err;
1527
1528 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1529 if (err < 0)
1530 return err;
1531
1532 return sprintf(buf, "%ld\n",
1533 deci_kelvin_to_millicelsius(value & 0xFFFF));
1534 }
1535
1536 /* Fan1 */
1537 static DEVICE_ATTR_RW(pwm1);
1538 static DEVICE_ATTR_RW(pwm1_enable);
1539 static DEVICE_ATTR_RO(fan1_input);
1540 static DEVICE_ATTR_RO(fan1_label);
1541
1542 /* Temperature */
1543 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1544
1545 static struct attribute *hwmon_attributes[] = {
1546 &dev_attr_pwm1.attr,
1547 &dev_attr_pwm1_enable.attr,
1548 &dev_attr_fan1_input.attr,
1549 &dev_attr_fan1_label.attr,
1550
1551 &dev_attr_temp1_input.attr,
1552 NULL
1553 };
1554
asus_hwmon_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)1555 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1556 struct attribute *attr, int idx)
1557 {
1558 struct device *dev = container_of(kobj, struct device, kobj);
1559 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1560 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1561
1562 if (attr == &dev_attr_pwm1.attr) {
1563 if (asus->fan_type != FAN_TYPE_AGFN)
1564 return 0;
1565 } else if (attr == &dev_attr_fan1_input.attr
1566 || attr == &dev_attr_fan1_label.attr
1567 || attr == &dev_attr_pwm1_enable.attr) {
1568 if (asus->fan_type == FAN_TYPE_NONE)
1569 return 0;
1570 } else if (attr == &dev_attr_temp1_input.attr) {
1571 int err = asus_wmi_get_devstate(asus,
1572 ASUS_WMI_DEVID_THERMAL_CTRL,
1573 &value);
1574
1575 if (err < 0)
1576 return 0; /* can't return negative here */
1577
1578 /*
1579 * If the temperature value in deci-Kelvin is near the absolute
1580 * zero temperature, something is clearly wrong
1581 */
1582 if (value == 0 || value == 1)
1583 return 0;
1584 }
1585
1586 return attr->mode;
1587 }
1588
1589 static const struct attribute_group hwmon_attribute_group = {
1590 .is_visible = asus_hwmon_sysfs_is_visible,
1591 .attrs = hwmon_attributes
1592 };
1593 __ATTRIBUTE_GROUPS(hwmon_attribute);
1594
asus_wmi_hwmon_init(struct asus_wmi * asus)1595 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1596 {
1597 struct device *dev = &asus->platform_device->dev;
1598 struct device *hwmon;
1599
1600 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1601 hwmon_attribute_groups);
1602
1603 if (IS_ERR(hwmon)) {
1604 pr_err("Could not register asus hwmon device\n");
1605 return PTR_ERR(hwmon);
1606 }
1607 return 0;
1608 }
1609
asus_wmi_fan_init(struct asus_wmi * asus)1610 static int asus_wmi_fan_init(struct asus_wmi *asus)
1611 {
1612 asus->fan_type = FAN_TYPE_NONE;
1613 asus->agfn_pwm = -1;
1614
1615 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1616 asus->fan_type = FAN_TYPE_SPEC83;
1617 else if (asus_wmi_has_agfn_fan(asus))
1618 asus->fan_type = FAN_TYPE_AGFN;
1619
1620 if (asus->fan_type == FAN_TYPE_NONE)
1621 return -ENODEV;
1622
1623 asus_fan_set_auto(asus);
1624 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1625 return 0;
1626 }
1627
1628 /* Fan mode *******************************************************************/
1629
fan_boost_mode_check_present(struct asus_wmi * asus)1630 static int fan_boost_mode_check_present(struct asus_wmi *asus)
1631 {
1632 u32 result;
1633 int err;
1634
1635 asus->fan_boost_mode_available = false;
1636
1637 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1638 &result);
1639 if (err) {
1640 if (err == -ENODEV)
1641 return 0;
1642 else
1643 return err;
1644 }
1645
1646 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1647 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1648 asus->fan_boost_mode_available = true;
1649 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1650 }
1651
1652 return 0;
1653 }
1654
fan_boost_mode_write(struct asus_wmi * asus)1655 static int fan_boost_mode_write(struct asus_wmi *asus)
1656 {
1657 int err;
1658 u8 value;
1659 u32 retval;
1660
1661 value = asus->fan_boost_mode;
1662
1663 pr_info("Set fan boost mode: %u\n", value);
1664 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1665 &retval);
1666 if (err) {
1667 pr_warn("Failed to set fan boost mode: %d\n", err);
1668 return err;
1669 }
1670
1671 if (retval != 1) {
1672 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1673 retval);
1674 return -EIO;
1675 }
1676
1677 return 0;
1678 }
1679
fan_boost_mode_switch_next(struct asus_wmi * asus)1680 static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1681 {
1682 u8 mask = asus->fan_boost_mode_mask;
1683
1684 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1685 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1686 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1687 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1688 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1689 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1690 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1691 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1692 else
1693 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1694 } else {
1695 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1696 }
1697
1698 return fan_boost_mode_write(asus);
1699 }
1700
fan_boost_mode_show(struct device * dev,struct device_attribute * attr,char * buf)1701 static ssize_t fan_boost_mode_show(struct device *dev,
1702 struct device_attribute *attr, char *buf)
1703 {
1704 struct asus_wmi *asus = dev_get_drvdata(dev);
1705
1706 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1707 }
1708
fan_boost_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1709 static ssize_t fan_boost_mode_store(struct device *dev,
1710 struct device_attribute *attr,
1711 const char *buf, size_t count)
1712 {
1713 int result;
1714 u8 new_mode;
1715 struct asus_wmi *asus = dev_get_drvdata(dev);
1716 u8 mask = asus->fan_boost_mode_mask;
1717
1718 result = kstrtou8(buf, 10, &new_mode);
1719 if (result < 0) {
1720 pr_warn("Trying to store invalid value\n");
1721 return result;
1722 }
1723
1724 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1725 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1726 return -EINVAL;
1727 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1728 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1729 return -EINVAL;
1730 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1731 return -EINVAL;
1732 }
1733
1734 asus->fan_boost_mode = new_mode;
1735 fan_boost_mode_write(asus);
1736
1737 return count;
1738 }
1739
1740 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1741 static DEVICE_ATTR_RW(fan_boost_mode);
1742
1743 /* Throttle thermal policy ****************************************************/
1744
throttle_thermal_policy_check_present(struct asus_wmi * asus)1745 static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
1746 {
1747 u32 result;
1748 int err;
1749
1750 asus->throttle_thermal_policy_available = false;
1751
1752 err = asus_wmi_get_devstate(asus,
1753 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1754 &result);
1755 if (err) {
1756 if (err == -ENODEV)
1757 return 0;
1758 return err;
1759 }
1760
1761 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
1762 asus->throttle_thermal_policy_available = true;
1763
1764 return 0;
1765 }
1766
throttle_thermal_policy_write(struct asus_wmi * asus)1767 static int throttle_thermal_policy_write(struct asus_wmi *asus)
1768 {
1769 int err;
1770 u8 value;
1771 u32 retval;
1772
1773 value = asus->throttle_thermal_policy_mode;
1774
1775 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1776 value, &retval);
1777 if (err) {
1778 pr_warn("Failed to set throttle thermal policy: %d\n", err);
1779 return err;
1780 }
1781
1782 if (retval != 1) {
1783 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
1784 retval);
1785 return -EIO;
1786 }
1787
1788 return 0;
1789 }
1790
throttle_thermal_policy_set_default(struct asus_wmi * asus)1791 static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
1792 {
1793 if (!asus->throttle_thermal_policy_available)
1794 return 0;
1795
1796 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1797 return throttle_thermal_policy_write(asus);
1798 }
1799
throttle_thermal_policy_switch_next(struct asus_wmi * asus)1800 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
1801 {
1802 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
1803
1804 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1805 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1806
1807 asus->throttle_thermal_policy_mode = new_mode;
1808 return throttle_thermal_policy_write(asus);
1809 }
1810
throttle_thermal_policy_show(struct device * dev,struct device_attribute * attr,char * buf)1811 static ssize_t throttle_thermal_policy_show(struct device *dev,
1812 struct device_attribute *attr, char *buf)
1813 {
1814 struct asus_wmi *asus = dev_get_drvdata(dev);
1815 u8 mode = asus->throttle_thermal_policy_mode;
1816
1817 return scnprintf(buf, PAGE_SIZE, "%d\n", mode);
1818 }
1819
throttle_thermal_policy_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1820 static ssize_t throttle_thermal_policy_store(struct device *dev,
1821 struct device_attribute *attr,
1822 const char *buf, size_t count)
1823 {
1824 int result;
1825 u8 new_mode;
1826 struct asus_wmi *asus = dev_get_drvdata(dev);
1827
1828 result = kstrtou8(buf, 10, &new_mode);
1829 if (result < 0)
1830 return result;
1831
1832 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1833 return -EINVAL;
1834
1835 asus->throttle_thermal_policy_mode = new_mode;
1836 throttle_thermal_policy_write(asus);
1837
1838 return count;
1839 }
1840
1841 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
1842 static DEVICE_ATTR_RW(throttle_thermal_policy);
1843
1844 /* Backlight ******************************************************************/
1845
read_backlight_power(struct asus_wmi * asus)1846 static int read_backlight_power(struct asus_wmi *asus)
1847 {
1848 int ret;
1849
1850 if (asus->driver->quirks->store_backlight_power)
1851 ret = !asus->driver->panel_power;
1852 else
1853 ret = asus_wmi_get_devstate_simple(asus,
1854 ASUS_WMI_DEVID_BACKLIGHT);
1855
1856 if (ret < 0)
1857 return ret;
1858
1859 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1860 }
1861
read_brightness_max(struct asus_wmi * asus)1862 static int read_brightness_max(struct asus_wmi *asus)
1863 {
1864 u32 retval;
1865 int err;
1866
1867 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1868 if (err < 0)
1869 return err;
1870
1871 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1872 retval >>= 8;
1873
1874 if (!retval)
1875 return -ENODEV;
1876
1877 return retval;
1878 }
1879
read_brightness(struct backlight_device * bd)1880 static int read_brightness(struct backlight_device *bd)
1881 {
1882 struct asus_wmi *asus = bl_get_data(bd);
1883 u32 retval;
1884 int err;
1885
1886 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1887 if (err < 0)
1888 return err;
1889
1890 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1891 }
1892
get_scalar_command(struct backlight_device * bd)1893 static u32 get_scalar_command(struct backlight_device *bd)
1894 {
1895 struct asus_wmi *asus = bl_get_data(bd);
1896 u32 ctrl_param = 0;
1897
1898 if ((asus->driver->brightness < bd->props.brightness) ||
1899 bd->props.brightness == bd->props.max_brightness)
1900 ctrl_param = 0x00008001;
1901 else if ((asus->driver->brightness > bd->props.brightness) ||
1902 bd->props.brightness == 0)
1903 ctrl_param = 0x00008000;
1904
1905 asus->driver->brightness = bd->props.brightness;
1906
1907 return ctrl_param;
1908 }
1909
update_bl_status(struct backlight_device * bd)1910 static int update_bl_status(struct backlight_device *bd)
1911 {
1912 struct asus_wmi *asus = bl_get_data(bd);
1913 u32 ctrl_param;
1914 int power, err = 0;
1915
1916 power = read_backlight_power(asus);
1917 if (power != -ENODEV && bd->props.power != power) {
1918 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1919 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1920 ctrl_param, NULL);
1921 if (asus->driver->quirks->store_backlight_power)
1922 asus->driver->panel_power = bd->props.power;
1923
1924 /* When using scalar brightness, updating the brightness
1925 * will mess with the backlight power */
1926 if (asus->driver->quirks->scalar_panel_brightness)
1927 return err;
1928 }
1929
1930 if (asus->driver->quirks->scalar_panel_brightness)
1931 ctrl_param = get_scalar_command(bd);
1932 else
1933 ctrl_param = bd->props.brightness;
1934
1935 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1936 ctrl_param, NULL);
1937
1938 return err;
1939 }
1940
1941 static const struct backlight_ops asus_wmi_bl_ops = {
1942 .get_brightness = read_brightness,
1943 .update_status = update_bl_status,
1944 };
1945
asus_wmi_backlight_notify(struct asus_wmi * asus,int code)1946 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1947 {
1948 struct backlight_device *bd = asus->backlight_device;
1949 int old = bd->props.brightness;
1950 int new = old;
1951
1952 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1953 new = code - NOTIFY_BRNUP_MIN + 1;
1954 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1955 new = code - NOTIFY_BRNDOWN_MIN;
1956
1957 bd->props.brightness = new;
1958 backlight_update_status(bd);
1959 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1960
1961 return old;
1962 }
1963
asus_wmi_backlight_init(struct asus_wmi * asus)1964 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1965 {
1966 struct backlight_device *bd;
1967 struct backlight_properties props;
1968 int max;
1969 int power;
1970
1971 max = read_brightness_max(asus);
1972 if (max < 0)
1973 return max;
1974
1975 power = read_backlight_power(asus);
1976 if (power == -ENODEV)
1977 power = FB_BLANK_UNBLANK;
1978 else if (power < 0)
1979 return power;
1980
1981 memset(&props, 0, sizeof(struct backlight_properties));
1982 props.type = BACKLIGHT_PLATFORM;
1983 props.max_brightness = max;
1984 bd = backlight_device_register(asus->driver->name,
1985 &asus->platform_device->dev, asus,
1986 &asus_wmi_bl_ops, &props);
1987 if (IS_ERR(bd)) {
1988 pr_err("Could not register backlight device\n");
1989 return PTR_ERR(bd);
1990 }
1991
1992 asus->backlight_device = bd;
1993
1994 if (asus->driver->quirks->store_backlight_power)
1995 asus->driver->panel_power = power;
1996
1997 bd->props.brightness = read_brightness(bd);
1998 bd->props.power = power;
1999 backlight_update_status(bd);
2000
2001 asus->driver->brightness = bd->props.brightness;
2002
2003 return 0;
2004 }
2005
asus_wmi_backlight_exit(struct asus_wmi * asus)2006 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
2007 {
2008 backlight_device_unregister(asus->backlight_device);
2009
2010 asus->backlight_device = NULL;
2011 }
2012
is_display_toggle(int code)2013 static int is_display_toggle(int code)
2014 {
2015 /* display toggle keys */
2016 if ((code >= 0x61 && code <= 0x67) ||
2017 (code >= 0x8c && code <= 0x93) ||
2018 (code >= 0xa0 && code <= 0xa7) ||
2019 (code >= 0xd0 && code <= 0xd5))
2020 return 1;
2021
2022 return 0;
2023 }
2024
2025 /* Fn-lock ********************************************************************/
2026
asus_wmi_has_fnlock_key(struct asus_wmi * asus)2027 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
2028 {
2029 u32 result;
2030
2031 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
2032
2033 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2034 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
2035 }
2036
asus_wmi_fnlock_update(struct asus_wmi * asus)2037 static void asus_wmi_fnlock_update(struct asus_wmi *asus)
2038 {
2039 int mode = asus->fnlock_locked;
2040
2041 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
2042 }
2043
2044 /* WMI events *****************************************************************/
2045
asus_wmi_get_event_code(u32 value)2046 static int asus_wmi_get_event_code(u32 value)
2047 {
2048 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
2049 union acpi_object *obj;
2050 acpi_status status;
2051 int code;
2052
2053 status = wmi_get_event_data(value, &response);
2054 if (ACPI_FAILURE(status)) {
2055 pr_warn("Failed to get WMI notify code: %s\n",
2056 acpi_format_exception(status));
2057 return -EIO;
2058 }
2059
2060 obj = (union acpi_object *)response.pointer;
2061
2062 if (obj && obj->type == ACPI_TYPE_INTEGER)
2063 code = (int)(obj->integer.value & WMI_EVENT_MASK);
2064 else
2065 code = -EIO;
2066
2067 kfree(obj);
2068 return code;
2069 }
2070
asus_wmi_handle_event_code(int code,struct asus_wmi * asus)2071 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
2072 {
2073 unsigned int key_value = 1;
2074 bool autorelease = 1;
2075 int result, orig_code;
2076
2077 orig_code = code;
2078
2079 if (asus->driver->key_filter) {
2080 asus->driver->key_filter(asus->driver, &code, &key_value,
2081 &autorelease);
2082 if (code == ASUS_WMI_KEY_IGNORE)
2083 return;
2084 }
2085
2086 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
2087 code = ASUS_WMI_BRN_UP;
2088 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
2089 code = ASUS_WMI_BRN_DOWN;
2090
2091 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
2092 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2093 asus_wmi_backlight_notify(asus, orig_code);
2094 return;
2095 }
2096 }
2097
2098 if (code == NOTIFY_KBD_BRTUP) {
2099 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2100 return;
2101 }
2102 if (code == NOTIFY_KBD_BRTDWN) {
2103 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
2104 return;
2105 }
2106 if (code == NOTIFY_KBD_BRTTOGGLE) {
2107 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
2108 kbd_led_set_by_kbd(asus, 0);
2109 else
2110 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2111 return;
2112 }
2113
2114 if (code == NOTIFY_FNLOCK_TOGGLE) {
2115 asus->fnlock_locked = !asus->fnlock_locked;
2116 asus_wmi_fnlock_update(asus);
2117 return;
2118 }
2119
2120 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
2121 result = asus_wmi_get_devstate_simple(asus,
2122 ASUS_WMI_DEVID_KBD_DOCK);
2123 if (result >= 0) {
2124 input_report_switch(asus->inputdev, SW_TABLET_MODE,
2125 !result);
2126 input_sync(asus->inputdev);
2127 }
2128 return;
2129 }
2130
2131 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2132 fan_boost_mode_switch_next(asus);
2133 return;
2134 }
2135
2136 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) {
2137 throttle_thermal_policy_switch_next(asus);
2138 return;
2139 }
2140
2141 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2142 return;
2143
2144 if (!sparse_keymap_report_event(asus->inputdev, code,
2145 key_value, autorelease))
2146 pr_info("Unknown key %x pressed\n", code);
2147 }
2148
asus_wmi_notify(u32 value,void * context)2149 static void asus_wmi_notify(u32 value, void *context)
2150 {
2151 struct asus_wmi *asus = context;
2152 int code;
2153 int i;
2154
2155 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2156 code = asus_wmi_get_event_code(value);
2157 if (code < 0) {
2158 pr_warn("Failed to get notify code: %d\n", code);
2159 return;
2160 }
2161
2162 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2163 return;
2164
2165 asus_wmi_handle_event_code(code, asus);
2166
2167 /*
2168 * Double check that queue is present:
2169 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2170 */
2171 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2172 return;
2173 }
2174
2175 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2176 }
2177
asus_wmi_notify_queue_flush(struct asus_wmi * asus)2178 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2179 {
2180 int code;
2181 int i;
2182
2183 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2184 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2185 if (code < 0) {
2186 pr_warn("Failed to get event during flush: %d\n", code);
2187 return code;
2188 }
2189
2190 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2191 return 0;
2192 }
2193
2194 pr_warn("Failed to flush event queue\n");
2195 return -EIO;
2196 }
2197
2198 /* Sysfs **********************************************************************/
2199
store_sys_wmi(struct asus_wmi * asus,int devid,const char * buf,size_t count)2200 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2201 const char *buf, size_t count)
2202 {
2203 u32 retval;
2204 int err, value;
2205
2206 value = asus_wmi_get_devstate_simple(asus, devid);
2207 if (value < 0)
2208 return value;
2209
2210 err = kstrtoint(buf, 0, &value);
2211 if (err)
2212 return err;
2213
2214 err = asus_wmi_set_devstate(devid, value, &retval);
2215 if (err < 0)
2216 return err;
2217
2218 return count;
2219 }
2220
show_sys_wmi(struct asus_wmi * asus,int devid,char * buf)2221 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2222 {
2223 int value = asus_wmi_get_devstate_simple(asus, devid);
2224
2225 if (value < 0)
2226 return value;
2227
2228 return sprintf(buf, "%d\n", value);
2229 }
2230
2231 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2232 static ssize_t show_##_name(struct device *dev, \
2233 struct device_attribute *attr, \
2234 char *buf) \
2235 { \
2236 struct asus_wmi *asus = dev_get_drvdata(dev); \
2237 \
2238 return show_sys_wmi(asus, _cm, buf); \
2239 } \
2240 static ssize_t store_##_name(struct device *dev, \
2241 struct device_attribute *attr, \
2242 const char *buf, size_t count) \
2243 { \
2244 struct asus_wmi *asus = dev_get_drvdata(dev); \
2245 \
2246 return store_sys_wmi(asus, _cm, buf, count); \
2247 } \
2248 static struct device_attribute dev_attr_##_name = { \
2249 .attr = { \
2250 .name = __stringify(_name), \
2251 .mode = _mode }, \
2252 .show = show_##_name, \
2253 .store = store_##_name, \
2254 }
2255
2256 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2257 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2258 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2259 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2260 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2261
cpufv_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2262 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2263 const char *buf, size_t count)
2264 {
2265 int value, rv;
2266
2267 rv = kstrtoint(buf, 0, &value);
2268 if (rv)
2269 return rv;
2270
2271 if (value < 0 || value > 2)
2272 return -EINVAL;
2273
2274 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2275 if (rv < 0)
2276 return rv;
2277
2278 return count;
2279 }
2280
2281 static DEVICE_ATTR_WO(cpufv);
2282
2283 static struct attribute *platform_attributes[] = {
2284 &dev_attr_cpufv.attr,
2285 &dev_attr_camera.attr,
2286 &dev_attr_cardr.attr,
2287 &dev_attr_touchpad.attr,
2288 &dev_attr_lid_resume.attr,
2289 &dev_attr_als_enable.attr,
2290 &dev_attr_fan_boost_mode.attr,
2291 &dev_attr_throttle_thermal_policy.attr,
2292 NULL
2293 };
2294
asus_sysfs_is_visible(struct kobject * kobj,struct attribute * attr,int idx)2295 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2296 struct attribute *attr, int idx)
2297 {
2298 struct device *dev = container_of(kobj, struct device, kobj);
2299 struct asus_wmi *asus = dev_get_drvdata(dev);
2300 bool ok = true;
2301 int devid = -1;
2302
2303 if (attr == &dev_attr_camera.attr)
2304 devid = ASUS_WMI_DEVID_CAMERA;
2305 else if (attr == &dev_attr_cardr.attr)
2306 devid = ASUS_WMI_DEVID_CARDREADER;
2307 else if (attr == &dev_attr_touchpad.attr)
2308 devid = ASUS_WMI_DEVID_TOUCHPAD;
2309 else if (attr == &dev_attr_lid_resume.attr)
2310 devid = ASUS_WMI_DEVID_LID_RESUME;
2311 else if (attr == &dev_attr_als_enable.attr)
2312 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2313 else if (attr == &dev_attr_fan_boost_mode.attr)
2314 ok = asus->fan_boost_mode_available;
2315 else if (attr == &dev_attr_throttle_thermal_policy.attr)
2316 ok = asus->throttle_thermal_policy_available;
2317
2318 if (devid != -1)
2319 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2320
2321 return ok ? attr->mode : 0;
2322 }
2323
2324 static const struct attribute_group platform_attribute_group = {
2325 .is_visible = asus_sysfs_is_visible,
2326 .attrs = platform_attributes
2327 };
2328
asus_wmi_sysfs_exit(struct platform_device * device)2329 static void asus_wmi_sysfs_exit(struct platform_device *device)
2330 {
2331 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2332 }
2333
asus_wmi_sysfs_init(struct platform_device * device)2334 static int asus_wmi_sysfs_init(struct platform_device *device)
2335 {
2336 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2337 }
2338
2339 /* Platform device ************************************************************/
2340
asus_wmi_platform_init(struct asus_wmi * asus)2341 static int asus_wmi_platform_init(struct asus_wmi *asus)
2342 {
2343 struct device *dev = &asus->platform_device->dev;
2344 char *wmi_uid;
2345 int rv;
2346
2347 /* INIT enable hotkeys on some models */
2348 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2349 pr_info("Initialization: %#x\n", rv);
2350
2351 /* We don't know yet what to do with this version... */
2352 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2353 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2354 asus->spec = rv;
2355 }
2356
2357 /*
2358 * The SFUN method probably allows the original driver to get the list
2359 * of features supported by a given model. For now, 0x0100 or 0x0800
2360 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2361 * The significance of others is yet to be found.
2362 */
2363 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2364 pr_info("SFUN value: %#x\n", rv);
2365 asus->sfun = rv;
2366 }
2367
2368 /*
2369 * Eee PC and Notebooks seems to have different method_id for DSTS,
2370 * but it may also be related to the BIOS's SPEC.
2371 * Note, on most Eeepc, there is no way to check if a method exist
2372 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2373 * but once again, SPEC may probably be used for that kind of things.
2374 *
2375 * Additionally at least TUF Gaming series laptops return nothing for
2376 * unknown methods, so the detection in this way is not possible.
2377 *
2378 * There is strong indication that only ACPI WMI devices that have _UID
2379 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2380 */
2381 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2382 if (!wmi_uid)
2383 return -ENODEV;
2384
2385 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2386 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2387 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2388 } else {
2389 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2390 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2391 }
2392
2393 /*
2394 * Some devices can have multiple event codes stored in a queue before
2395 * the module load if it was unloaded intermittently after calling
2396 * the INIT method (enables event handling). The WMI notify handler is
2397 * expected to retrieve all event codes until a retrieved code equals
2398 * queue end marker (One or Ones). Old codes are flushed from the queue
2399 * upon module load. Not enabling this when it should be has minimal
2400 * visible impact so fall back if anything goes wrong.
2401 */
2402 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2403 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2404 dev_info(dev, "Detected ATK, enable event queue\n");
2405
2406 if (!asus_wmi_notify_queue_flush(asus))
2407 asus->wmi_event_queue = true;
2408 }
2409
2410 /* CWAP allow to define the behavior of the Fn+F2 key,
2411 * this method doesn't seems to be present on Eee PCs */
2412 if (asus->driver->quirks->wapf >= 0)
2413 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2414 asus->driver->quirks->wapf, NULL);
2415
2416 return 0;
2417 }
2418
2419 /* debugfs ********************************************************************/
2420
2421 struct asus_wmi_debugfs_node {
2422 struct asus_wmi *asus;
2423 char *name;
2424 int (*show) (struct seq_file *m, void *data);
2425 };
2426
show_dsts(struct seq_file * m,void * data)2427 static int show_dsts(struct seq_file *m, void *data)
2428 {
2429 struct asus_wmi *asus = m->private;
2430 int err;
2431 u32 retval = -1;
2432
2433 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2434 if (err < 0)
2435 return err;
2436
2437 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2438
2439 return 0;
2440 }
2441
show_devs(struct seq_file * m,void * data)2442 static int show_devs(struct seq_file *m, void *data)
2443 {
2444 struct asus_wmi *asus = m->private;
2445 int err;
2446 u32 retval = -1;
2447
2448 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2449 &retval);
2450 if (err < 0)
2451 return err;
2452
2453 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2454 asus->debug.ctrl_param, retval);
2455
2456 return 0;
2457 }
2458
show_call(struct seq_file * m,void * data)2459 static int show_call(struct seq_file *m, void *data)
2460 {
2461 struct asus_wmi *asus = m->private;
2462 struct bios_args args = {
2463 .arg0 = asus->debug.dev_id,
2464 .arg1 = asus->debug.ctrl_param,
2465 };
2466 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2467 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2468 union acpi_object *obj;
2469 acpi_status status;
2470
2471 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2472 0, asus->debug.method_id,
2473 &input, &output);
2474
2475 if (ACPI_FAILURE(status))
2476 return -EIO;
2477
2478 obj = (union acpi_object *)output.pointer;
2479 if (obj && obj->type == ACPI_TYPE_INTEGER)
2480 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2481 asus->debug.dev_id, asus->debug.ctrl_param,
2482 (u32) obj->integer.value);
2483 else
2484 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2485 asus->debug.dev_id, asus->debug.ctrl_param,
2486 obj ? obj->type : -1);
2487
2488 kfree(obj);
2489
2490 return 0;
2491 }
2492
2493 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2494 {NULL, "devs", show_devs},
2495 {NULL, "dsts", show_dsts},
2496 {NULL, "call", show_call},
2497 };
2498
asus_wmi_debugfs_open(struct inode * inode,struct file * file)2499 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2500 {
2501 struct asus_wmi_debugfs_node *node = inode->i_private;
2502
2503 return single_open(file, node->show, node->asus);
2504 }
2505
2506 static const struct file_operations asus_wmi_debugfs_io_ops = {
2507 .owner = THIS_MODULE,
2508 .open = asus_wmi_debugfs_open,
2509 .read = seq_read,
2510 .llseek = seq_lseek,
2511 .release = single_release,
2512 };
2513
asus_wmi_debugfs_exit(struct asus_wmi * asus)2514 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2515 {
2516 debugfs_remove_recursive(asus->debug.root);
2517 }
2518
asus_wmi_debugfs_init(struct asus_wmi * asus)2519 static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2520 {
2521 int i;
2522
2523 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2524
2525 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2526 &asus->debug.method_id);
2527
2528 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2529 &asus->debug.dev_id);
2530
2531 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2532 &asus->debug.ctrl_param);
2533
2534 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2535 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2536
2537 node->asus = asus;
2538 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2539 asus->debug.root, node,
2540 &asus_wmi_debugfs_io_ops);
2541 }
2542 }
2543
2544 /* Init / exit ****************************************************************/
2545
asus_wmi_add(struct platform_device * pdev)2546 static int asus_wmi_add(struct platform_device *pdev)
2547 {
2548 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2549 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2550 struct asus_wmi *asus;
2551 const char *chassis_type;
2552 acpi_status status;
2553 int err;
2554 u32 result;
2555
2556 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2557 if (!asus)
2558 return -ENOMEM;
2559
2560 asus->driver = wdrv;
2561 asus->platform_device = pdev;
2562 wdrv->platform_device = pdev;
2563 platform_set_drvdata(asus->platform_device, asus);
2564
2565 if (wdrv->detect_quirks)
2566 wdrv->detect_quirks(asus->driver);
2567
2568 err = asus_wmi_platform_init(asus);
2569 if (err)
2570 goto fail_platform;
2571
2572 err = fan_boost_mode_check_present(asus);
2573 if (err)
2574 goto fail_fan_boost_mode;
2575
2576 err = throttle_thermal_policy_check_present(asus);
2577 if (err)
2578 goto fail_throttle_thermal_policy;
2579 else
2580 throttle_thermal_policy_set_default(asus);
2581
2582 err = asus_wmi_sysfs_init(asus->platform_device);
2583 if (err)
2584 goto fail_sysfs;
2585
2586 err = asus_wmi_input_init(asus);
2587 if (err)
2588 goto fail_input;
2589
2590 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2591
2592 err = asus_wmi_hwmon_init(asus);
2593 if (err)
2594 goto fail_hwmon;
2595
2596 err = asus_wmi_led_init(asus);
2597 if (err)
2598 goto fail_leds;
2599
2600 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2601 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2602 asus->driver->wlan_ctrl_by_user = 1;
2603
2604 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2605 err = asus_wmi_rfkill_init(asus);
2606 if (err)
2607 goto fail_rfkill;
2608 }
2609
2610 if (asus->driver->quirks->wmi_force_als_set)
2611 asus_wmi_set_als();
2612
2613 /* Some Asus desktop boards export an acpi-video backlight interface,
2614 stop this from showing up */
2615 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2616 if (chassis_type && !strcmp(chassis_type, "3"))
2617 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2618
2619 if (asus->driver->quirks->wmi_backlight_power)
2620 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2621
2622 if (asus->driver->quirks->wmi_backlight_native)
2623 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2624
2625 if (asus->driver->quirks->xusb2pr)
2626 asus_wmi_set_xusb2pr(asus);
2627
2628 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2629 err = asus_wmi_backlight_init(asus);
2630 if (err && err != -ENODEV)
2631 goto fail_backlight;
2632 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2633 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2634
2635 if (asus_wmi_has_fnlock_key(asus)) {
2636 asus->fnlock_locked = true;
2637 asus_wmi_fnlock_update(asus);
2638 }
2639
2640 status = wmi_install_notify_handler(asus->driver->event_guid,
2641 asus_wmi_notify, asus);
2642 if (ACPI_FAILURE(status)) {
2643 pr_err("Unable to register notify handler - %d\n", status);
2644 err = -ENODEV;
2645 goto fail_wmi_handler;
2646 }
2647
2648 asus_wmi_battery_init(asus);
2649
2650 asus_wmi_debugfs_init(asus);
2651
2652 return 0;
2653
2654 fail_wmi_handler:
2655 asus_wmi_backlight_exit(asus);
2656 fail_backlight:
2657 asus_wmi_rfkill_exit(asus);
2658 fail_rfkill:
2659 asus_wmi_led_exit(asus);
2660 fail_leds:
2661 fail_hwmon:
2662 asus_wmi_input_exit(asus);
2663 fail_input:
2664 asus_wmi_sysfs_exit(asus->platform_device);
2665 fail_sysfs:
2666 fail_throttle_thermal_policy:
2667 fail_fan_boost_mode:
2668 fail_platform:
2669 kfree(asus);
2670 return err;
2671 }
2672
asus_wmi_remove(struct platform_device * device)2673 static int asus_wmi_remove(struct platform_device *device)
2674 {
2675 struct asus_wmi *asus;
2676
2677 asus = platform_get_drvdata(device);
2678 wmi_remove_notify_handler(asus->driver->event_guid);
2679 asus_wmi_backlight_exit(asus);
2680 asus_wmi_input_exit(asus);
2681 asus_wmi_led_exit(asus);
2682 asus_wmi_rfkill_exit(asus);
2683 asus_wmi_debugfs_exit(asus);
2684 asus_wmi_sysfs_exit(asus->platform_device);
2685 asus_fan_set_auto(asus);
2686 asus_wmi_battery_exit(asus);
2687
2688 kfree(asus);
2689 return 0;
2690 }
2691
2692 /* Platform driver - hibernate/resume callbacks *******************************/
2693
asus_hotk_thaw(struct device * device)2694 static int asus_hotk_thaw(struct device *device)
2695 {
2696 struct asus_wmi *asus = dev_get_drvdata(device);
2697
2698 if (asus->wlan.rfkill) {
2699 bool wlan;
2700
2701 /*
2702 * Work around bios bug - acpi _PTS turns off the wireless led
2703 * during suspend. Normally it restores it on resume, but
2704 * we should kick it ourselves in case hibernation is aborted.
2705 */
2706 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2707 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2708 }
2709
2710 return 0;
2711 }
2712
asus_hotk_resume(struct device * device)2713 static int asus_hotk_resume(struct device *device)
2714 {
2715 struct asus_wmi *asus = dev_get_drvdata(device);
2716
2717 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2718 kbd_led_update(asus);
2719
2720 if (asus_wmi_has_fnlock_key(asus))
2721 asus_wmi_fnlock_update(asus);
2722 return 0;
2723 }
2724
asus_hotk_restore(struct device * device)2725 static int asus_hotk_restore(struct device *device)
2726 {
2727 struct asus_wmi *asus = dev_get_drvdata(device);
2728 int bl;
2729
2730 /* Refresh both wlan rfkill state and pci hotplug */
2731 if (asus->wlan.rfkill)
2732 asus_rfkill_hotplug(asus);
2733
2734 if (asus->bluetooth.rfkill) {
2735 bl = !asus_wmi_get_devstate_simple(asus,
2736 ASUS_WMI_DEVID_BLUETOOTH);
2737 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2738 }
2739 if (asus->wimax.rfkill) {
2740 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2741 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2742 }
2743 if (asus->wwan3g.rfkill) {
2744 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2745 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2746 }
2747 if (asus->gps.rfkill) {
2748 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2749 rfkill_set_sw_state(asus->gps.rfkill, bl);
2750 }
2751 if (asus->uwb.rfkill) {
2752 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2753 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2754 }
2755 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2756 kbd_led_update(asus);
2757
2758 if (asus_wmi_has_fnlock_key(asus))
2759 asus_wmi_fnlock_update(asus);
2760 return 0;
2761 }
2762
2763 static const struct dev_pm_ops asus_pm_ops = {
2764 .thaw = asus_hotk_thaw,
2765 .restore = asus_hotk_restore,
2766 .resume = asus_hotk_resume,
2767 };
2768
2769 /* Registration ***************************************************************/
2770
asus_wmi_probe(struct platform_device * pdev)2771 static int asus_wmi_probe(struct platform_device *pdev)
2772 {
2773 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2774 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2775 int ret;
2776
2777 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2778 pr_warn("ASUS Management GUID not found\n");
2779 return -ENODEV;
2780 }
2781
2782 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2783 pr_warn("ASUS Event GUID not found\n");
2784 return -ENODEV;
2785 }
2786
2787 if (wdrv->probe) {
2788 ret = wdrv->probe(pdev);
2789 if (ret)
2790 return ret;
2791 }
2792
2793 return asus_wmi_add(pdev);
2794 }
2795
2796 static bool used;
2797
asus_wmi_register_driver(struct asus_wmi_driver * driver)2798 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2799 {
2800 struct platform_driver *platform_driver;
2801 struct platform_device *platform_device;
2802
2803 if (used)
2804 return -EBUSY;
2805
2806 platform_driver = &driver->platform_driver;
2807 platform_driver->remove = asus_wmi_remove;
2808 platform_driver->driver.owner = driver->owner;
2809 platform_driver->driver.name = driver->name;
2810 platform_driver->driver.pm = &asus_pm_ops;
2811
2812 platform_device = platform_create_bundle(platform_driver,
2813 asus_wmi_probe,
2814 NULL, 0, NULL, 0);
2815 if (IS_ERR(platform_device))
2816 return PTR_ERR(platform_device);
2817
2818 used = true;
2819 return 0;
2820 }
2821 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2822
asus_wmi_unregister_driver(struct asus_wmi_driver * driver)2823 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2824 {
2825 platform_device_unregister(driver->platform_device);
2826 platform_driver_unregister(&driver->platform_driver);
2827 used = false;
2828 }
2829 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2830
asus_wmi_init(void)2831 static int __init asus_wmi_init(void)
2832 {
2833 pr_info("ASUS WMI generic driver loaded\n");
2834 return 0;
2835 }
2836
asus_wmi_exit(void)2837 static void __exit asus_wmi_exit(void)
2838 {
2839 pr_info("ASUS WMI generic driver unloaded\n");
2840 }
2841
2842 module_init(asus_wmi_init);
2843 module_exit(asus_wmi_exit);
2844