1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * HWMON driver for ASUS motherboards that provides sensor readouts via WMI
6  * Copyright (C) 2018-2019 Ed Brindley <kernel@maidavale.org>
9  * - CPU Core Voltage,
10  * - CPU SOC Voltage,
11  * - DRAM Voltage,
12  * - VDDP Voltage,
13  * - 1.8V PLL Voltage,
14  * - +12V Voltage,
15  * - +5V Voltage,
16  * - 3VSB Voltage,
17  * - VBAT Voltage,
18  * - AVCC3 Voltage,
19  * - SB 1.05V Voltage,
20  * - CPU Core Voltage,
21  * - CPU SOC Voltage,
22  * - DRAM Voltage,
23  * - CPU Fan RPM,
24  * - Chassis Fan 1 RPM,
25  * - Chassis Fan 2 RPM,
26  * - Chassis Fan 3 RPM,
27  * - HAMP Fan RPM,
28  * - Water Pump RPM,
29  * - CPU OPT RPM,
30  * - Water Flow RPM,
31  * - AIO Pump RPM,
32  * - CPU Temperature,
33  * - CPU Socket Temperature,
34  * - Motherboard Temperature,
35  * - Chipset Temperature,
36  * - Tsensor 1 Temperature,
37  * - CPU VRM Temperature,
38  * - Water In,
39  * - Water Out,
40  * - CPU VRM Output Current.
54 #define ASUSWMI_MONITORING_GUID		"466747A0-70EC-11DE-8A39-0800200C9A66"
71 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X399-A"),
72 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X470-PRO"),
75 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VI HERO (WI-FI AC)"),
77 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VII HERO (WI-FI)"),
78 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-E GAMING"),
79 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-F GAMING"),
80 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-F GAMING II"),
81 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-I GAMING"),
82 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X399-E GAMING"),
83 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X470-F GAMING"),
84 	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X470-I GAMING"),
138  * struct asus_wmi_sensor_info - sensor info.
139  * @id: sensor id.
140  * @data_type: sensor class e.g. voltage, temp etc.
141  * @location: sensor location.
142  * @name: sensor name.
143  * @source: sensor source.
144  * @type: sensor type signed, unsigned etc.
145  * @cached_value: cached sensor value.
182 		return -EIO;  in asus_wmi_call_method()
203 		return -EIO;  in asus_wmi_get_version()
205 	if (obj->type != ACPI_TYPE_INTEGER) {  in asus_wmi_get_version()
206 		err = -EIO;  in asus_wmi_get_version()
211 	*version = obj->integer.value;  in asus_wmi_get_version()
219  * Gets the number of sensor items
234 		return -EIO;  in asus_wmi_get_item_count()
236 	if (obj->type != ACPI_TYPE_INTEGER) {  in asus_wmi_get_item_count()
237 		err = -EIO;  in asus_wmi_get_item_count()
242 	*count = obj->integer.value;  in asus_wmi_get_item_count()
257 		return -ENOMEM;  in asus_wmi_hwmon_add_chan_info()
259 	asus_wmi_hwmon_chan->type = type;  in asus_wmi_hwmon_add_chan_info()
260 	asus_wmi_hwmon_chan->config = cfg;  in asus_wmi_hwmon_add_chan_info()
267  * For a given sensor item returns details e.g. type (voltage/temperature/fan speed etc), bank etc
281 	s->id = index;  in asus_wmi_sensor_info()
285 		return -EIO;  in asus_wmi_sensor_info()
287 	if (obj->type != ACPI_TYPE_PACKAGE) {  in asus_wmi_sensor_info()
288 		err = -EIO;  in asus_wmi_sensor_info()
292 	if (obj->package.count != 5) {  in asus_wmi_sensor_info()
293 		err = -EIO;  in asus_wmi_sensor_info()
297 	name_obj = obj->package.elements[0];  in asus_wmi_sensor_info()
299 		err = -EIO;  in asus_wmi_sensor_info()
303 	strscpy(s->name, name_obj.string.pointer, sizeof(s->name));  in asus_wmi_sensor_info()
305 	data_type_obj = obj->package.elements[1];  in asus_wmi_sensor_info()
307 		err = -EIO;  in asus_wmi_sensor_info()
311 	s->data_type = data_type_obj.integer.value;  in asus_wmi_sensor_info()
313 	location_obj = obj->package.elements[2];  in asus_wmi_sensor_info()
315 		err = -EIO;  in asus_wmi_sensor_info()
319 	s->location = location_obj.integer.value;  in asus_wmi_sensor_info()
321 	source_obj = obj->package.elements[3];  in asus_wmi_sensor_info()
323 		err = -EIO;  in asus_wmi_sensor_info()
327 	s->source = source_obj.integer.value;  in asus_wmi_sensor_info()
329 	type_obj = obj->package.elements[4];  in asus_wmi_sensor_info()
331 		err = -EIO;  in asus_wmi_sensor_info()
336 	s->type = type_obj.integer.value;  in asus_wmi_sensor_info()
364 		return -EIO;  in asus_wmi_get_sensor_value()
366 	if (obj->type != ACPI_TYPE_INTEGER) {  in asus_wmi_get_sensor_value()
367 		err = -EIO;  in asus_wmi_get_sensor_value()
372 	*value = obj->integer.value;  in asus_wmi_get_sensor_value()
381 	struct asus_wmi_sensor_info *sensor;  in asus_wmi_update_values_for_source()  local
386 	for (i = 0; i < sensor_data->wmi.sensor_count; i++) {  in asus_wmi_update_values_for_source()
387 		sensor = sensor_data->wmi.info_by_id[i];  in asus_wmi_update_values_for_source()
388 		if (sensor && sensor->source == source) {  in asus_wmi_update_values_for_source()
389 			ret = asus_wmi_get_sensor_value(sensor->id, &value);  in asus_wmi_update_values_for_source()
393 			sensor->cached_value = value;  in asus_wmi_update_values_for_source()
417 static int asus_wmi_get_cached_value_or_update(const struct asus_wmi_sensor_info *sensor,  in asus_wmi_get_cached_value_or_update()  argument
423 	mutex_lock(&sensor_data->lock);  in asus_wmi_get_cached_value_or_update()
425 	if (time_after(jiffies, sensor_data->wmi.source_last_updated[sensor->source] + HZ)) {  in asus_wmi_get_cached_value_or_update()
426 		ret = asus_wmi_update_buffer(sensor->source);  in asus_wmi_get_cached_value_or_update()
430 		ret = asus_wmi_update_values_for_source(sensor->source, sensor_data);  in asus_wmi_get_cached_value_or_update()
434 		sensor_data->wmi.source_last_updated[sensor->source] = jiffies;  in asus_wmi_get_cached_value_or_update()
437 	*value = sensor->cached_value;  in asus_wmi_get_cached_value_or_update()
440 	mutex_unlock(&sensor_data->lock);  in asus_wmi_get_cached_value_or_update()
447 			       u32 attr, int channel, long *val)  in asus_wmi_hwmon_read()  argument
449 	const struct asus_wmi_sensor_info *sensor;  in asus_wmi_hwmon_read()  local
455 	sensor = *(sensor_data->wmi.info[type] + channel);  in asus_wmi_hwmon_read()
457 	ret = asus_wmi_get_cached_value_or_update(sensor, sensor_data, &value);  in asus_wmi_hwmon_read()
461 	*val = asus_wmi_scale_sensor_value(value, sensor->data_type);  in asus_wmi_hwmon_read()
468 				      int channel, const char **str)  in asus_wmi_hwmon_read_string()  argument
471 	const struct asus_wmi_sensor_info *sensor;  in asus_wmi_hwmon_read_string()  local
473 	sensor = *(sensor_data->wmi.info[type] + channel);  in asus_wmi_hwmon_read_string()
474 	*str = sensor->name;  in asus_wmi_hwmon_read_string()
481 					 int channel)  in asus_wmi_hwmon_is_visible()  argument
484 	const struct asus_wmi_sensor_info *sensor;  in asus_wmi_hwmon_is_visible()  local
486 	sensor = *(sensor_data->wmi.info[type] + channel);  in asus_wmi_hwmon_is_visible()
487 	if (sensor)  in asus_wmi_hwmon_is_visible()
517 	for (i = 0; i < sensor_data->wmi.sensor_count; i++) {  in asus_wmi_configure_sensor_setup()
518 		struct asus_wmi_sensor_info sensor;  in asus_wmi_configure_sensor_setup()  local
520 		err = asus_wmi_sensor_info(i, &sensor);  in asus_wmi_configure_sensor_setup()
524 		switch (sensor.data_type) {  in asus_wmi_configure_sensor_setup()
530 			type = asus_data_types[sensor.data_type];  in asus_wmi_configure_sensor_setup()
545 		return -ENOMEM;  in asus_wmi_configure_sensor_setup()
550 		return -ENOMEM;  in asus_wmi_configure_sensor_setup()
555 	sensor_data->wmi.info_by_id = devm_kcalloc(dev, sensor_data->wmi.sensor_count,  in asus_wmi_configure_sensor_setup()
556 						   sizeof(*sensor_data->wmi.info_by_id),  in asus_wmi_configure_sensor_setup()
559 	if (!sensor_data->wmi.info_by_id)  in asus_wmi_configure_sensor_setup()
560 		return -ENOMEM;  in asus_wmi_configure_sensor_setup()
574 		sensor_data->wmi.info[type] = devm_kcalloc(dev,  in asus_wmi_configure_sensor_setup()
576 							   sizeof(*sensor_data->wmi.info),  in asus_wmi_configure_sensor_setup()
578 		if (!sensor_data->wmi.info[type])  in asus_wmi_configure_sensor_setup()
579 			return -ENOMEM;  in asus_wmi_configure_sensor_setup()
582 	for (i = sensor_data->wmi.sensor_count - 1; i >= 0; i--) {  in asus_wmi_configure_sensor_setup()
585 			return -ENOMEM;  in asus_wmi_configure_sensor_setup()
591 		switch (temp_sensor->data_type) {  in asus_wmi_configure_sensor_setup()
597 			type = asus_data_types[temp_sensor->data_type];  in asus_wmi_configure_sensor_setup()
598 			idx = --nr_count[type];  in asus_wmi_configure_sensor_setup()
599 			*(sensor_data->wmi.info[type] + idx) = temp_sensor;  in asus_wmi_configure_sensor_setup()
600 			sensor_data->wmi.info_by_id[i] = temp_sensor;  in asus_wmi_configure_sensor_setup()
606 		sensor_data->wmi.sensor_count);  in asus_wmi_configure_sensor_setup()
617 	struct device *dev = &wdev->dev;  in asus_wmi_probe()
621 		return -ENODEV;  in asus_wmi_probe()
625 		return -ENOMEM;  in asus_wmi_probe()
628 		return -ENODEV;  in asus_wmi_probe()
630 	if (asus_wmi_get_item_count(&sensor_data->wmi.sensor_count))  in asus_wmi_probe()
631 		return -ENODEV;  in asus_wmi_probe()
633 	if (sensor_data->wmi.sensor_count  <= 0 || version < 2) {  in asus_wmi_probe()
635 			 version, sensor_data->wmi.sensor_count);  in asus_wmi_probe()
637 		return -ENODEV;  in asus_wmi_probe()
640 	mutex_init(&sensor_data->lock);  in asus_wmi_probe()