59 #define ACPI_THERMAL_TRIPS_EXCEPTION(tz, str) \  argument
61 	acpi_handle_info(tz->device->handle, \
128 static int acpi_thermal_get_temperature(struct acpi_thermal *tz)  in acpi_thermal_get_temperature()  argument
133 	if (!tz)  in acpi_thermal_get_temperature()
136 	tz->last_temp_dk = tz->temp_dk;  in acpi_thermal_get_temperature()
138 	status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp);  in acpi_thermal_get_temperature()
142 	tz->temp_dk = tmp;  in acpi_thermal_get_temperature()
144 	acpi_handle_debug(tz->device->handle, "Temperature is %lu dK\n",  in acpi_thermal_get_temperature()
145 			  tz->temp_dk);  in acpi_thermal_get_temperature()
150 static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)  in acpi_thermal_get_polling_frequency()  argument
155 	if (!tz)  in acpi_thermal_get_polling_frequency()
158 	status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp);  in acpi_thermal_get_polling_frequency()
162 	tz->polling_frequency = tmp;  in acpi_thermal_get_polling_frequency()
163 	acpi_handle_debug(tz->device->handle, "Polling frequency is %lu dS\n",  in acpi_thermal_get_polling_frequency()
164 			  tz->polling_frequency);  in acpi_thermal_get_polling_frequency()
169 static int acpi_thermal_temp(struct acpi_thermal *tz, int temp_deci_k)  in acpi_thermal_temp()  argument
177 						       tz->kelvin_offset);  in acpi_thermal_temp()
189 static int active_trip_index(struct acpi_thermal *tz,  in active_trip_index()  argument
195 	return active - tz->trips.active;  in active_trip_index()
198 static long get_passive_temp(struct acpi_thermal *tz)  in get_passive_temp()  argument
202 	if (acpi_passive_trip_temp(tz->device, &temp))  in get_passive_temp()
208 static long get_active_temp(struct acpi_thermal *tz, int index)  in get_active_temp()  argument
212 	if (acpi_active_trip_temp(tz->device, index, &temp))  in get_active_temp()
228 static void acpi_thermal_update_trip(struct acpi_thermal *tz,  in acpi_thermal_update_trip()  argument
237 		acpi_trip->temp_dk = get_passive_temp(tz);  in acpi_thermal_update_trip()
239 		int index = active_trip_index(tz, acpi_trip);  in acpi_thermal_update_trip()
241 		acpi_trip->temp_dk = get_active_temp(tz, index);  in acpi_thermal_update_trip()
245 		ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state");  in acpi_thermal_update_trip()
248 static bool update_trip_devices(struct acpi_thermal *tz,  in update_trip_devices()  argument
261 	if (!acpi_evaluate_reference(tz->device->handle, method, NULL, &devices)) {  in update_trip_devices()
262 		acpi_handle_info(tz->device->handle, "%s evaluation failure\n", method);  in update_trip_devices()
272 		ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device");  in update_trip_devices()
278 static void acpi_thermal_update_trip_devices(struct acpi_thermal *tz,  in acpi_thermal_update_trip_devices()  argument
283 			ACPI_THERMAL_TRIP_PASSIVE : active_trip_index(tz, acpi_trip);  in acpi_thermal_update_trip_devices()
285 	if (update_trip_devices(tz, acpi_trip, index, true))  in acpi_thermal_update_trip_devices()
289 	ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state");  in acpi_thermal_update_trip_devices()
293 	struct acpi_thermal *tz;  member
301 	struct acpi_thermal *tz = atd->tz;  in acpi_thermal_adjust_trip()  local
308 		acpi_thermal_update_trip(tz, trip);  in acpi_thermal_adjust_trip()
310 		acpi_thermal_update_trip_devices(tz, trip);  in acpi_thermal_adjust_trip()
313 		temp = acpi_thermal_temp(tz, acpi_trip->temp_dk);  in acpi_thermal_adjust_trip()
317 	thermal_zone_set_trip_temp(tz->thermal_zone, trip, temp);  in acpi_thermal_adjust_trip()
322 static void acpi_queue_thermal_check(struct acpi_thermal *tz)  in acpi_queue_thermal_check()  argument
324 	if (!work_pending(&tz->thermal_check_work))  in acpi_queue_thermal_check()
325 		queue_work(acpi_thermal_pm_queue, &tz->thermal_check_work);  in acpi_queue_thermal_check()
328 static void acpi_thermal_trips_update(struct acpi_thermal *tz, u32 event)  in acpi_thermal_trips_update()  argument
330 	struct adjust_trip_data atd = { .tz = tz, .event = event };  in acpi_thermal_trips_update()
331 	struct acpi_device *adev = tz->device;  in acpi_thermal_trips_update()
340 	thermal_zone_for_each_trip(tz->thermal_zone,  in acpi_thermal_trips_update()
342 	acpi_queue_thermal_check(tz);  in acpi_thermal_trips_update()
347 static int acpi_thermal_get_critical_trip(struct acpi_thermal *tz)  in acpi_thermal_get_critical_trip()  argument
356 		acpi_handle_debug(tz->device->handle, "Critical threshold disabled\n");  in acpi_thermal_get_critical_trip()
360 	if (acpi_critical_trip_temp(tz->device, &temp))  in acpi_thermal_get_critical_trip()
373 	acpi_handle_debug(tz->device->handle, "Critical threshold [%d]\n", temp);  in acpi_thermal_get_critical_trip()
377 static int acpi_thermal_get_hot_trip(struct acpi_thermal *tz)  in acpi_thermal_get_hot_trip()  argument
381 	if (acpi_hot_trip_temp(tz->device, &temp) || temp == THERMAL_TEMP_INVALID) {  in acpi_thermal_get_hot_trip()
382 		acpi_handle_debug(tz->device->handle, "No hot threshold\n");  in acpi_thermal_get_hot_trip()
386 	acpi_handle_debug(tz->device->handle, "Hot threshold [%d]\n", temp);  in acpi_thermal_get_hot_trip()
390 static bool passive_trip_params_init(struct acpi_thermal *tz)  in passive_trip_params_init()  argument
395 	status = acpi_evaluate_integer(tz->device->handle, "_TC1", NULL, &tmp);  in passive_trip_params_init()
399 	tz->trips.passive.tc1 = tmp;  in passive_trip_params_init()
401 	status = acpi_evaluate_integer(tz->device->handle, "_TC2", NULL, &tmp);  in passive_trip_params_init()
405 	tz->trips.passive.tc2 = tmp;  in passive_trip_params_init()
407 	status = acpi_evaluate_integer(tz->device->handle, "_TFP", NULL, &tmp);  in passive_trip_params_init()
409 		tz->trips.passive.delay = tmp;  in passive_trip_params_init()
413 	status = acpi_evaluate_integer(tz->device->handle, "_TSP", NULL, &tmp);  in passive_trip_params_init()
417 	tz->trips.passive.delay = tmp * 100;  in passive_trip_params_init()
422 static bool acpi_thermal_init_trip(struct acpi_thermal *tz, int index)  in acpi_thermal_init_trip()  argument
428 		acpi_trip = &tz->trips.passive.trip;  in acpi_thermal_init_trip()
433 		if (!passive_trip_params_init(tz))  in acpi_thermal_init_trip()
437 				 get_passive_temp(tz);  in acpi_thermal_init_trip()
439 		acpi_trip = &tz->trips.active[index].trip;  in acpi_thermal_init_trip()
444 		temp = get_active_temp(tz, index);  in acpi_thermal_init_trip()
450 	if (!update_trip_devices(tz, acpi_trip, index, false))  in acpi_thermal_init_trip()
461 static void acpi_thermal_get_trip_points(struct acpi_thermal *tz)  in acpi_thermal_get_trip_points()  argument
465 	acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE);  in acpi_thermal_get_trip_points()
468 		if (!acpi_thermal_init_trip(tz, i))  in acpi_thermal_get_trip_points()
473 		tz->trips.active[i].trip.temp_dk = THERMAL_TEMP_INVALID;  in acpi_thermal_get_trip_points()
480 	struct acpi_thermal *tz = thermal_zone_device_priv(thermal);  in thermal_get_temp()  local
483 	if (!tz)  in thermal_get_temp()
486 	result = acpi_thermal_get_temperature(tz);  in thermal_get_temp()
490 	*temp = deci_kelvin_to_millicelsius_with_offset(tz->temp_dk,  in thermal_get_temp()
491 							tz->kelvin_offset);  in thermal_get_temp()
499 	struct acpi_thermal *tz = thermal_zone_device_priv(thermal);  in thermal_get_trend()  local
503 	if (!tz || !trip)  in thermal_get_trend()
512 		t = tz->trips.passive.tc1 * (tz->temp_dk -  in thermal_get_trend()
513 						tz->last_temp_dk) +  in thermal_get_trend()
514 			tz->trips.passive.tc2 * (tz->temp_dk -  in thermal_get_trend()
526 		t = acpi_thermal_temp(tz, tz->temp_dk);  in thermal_get_trend()
543 	struct acpi_thermal *tz = thermal_zone_device_priv(thermal);  in acpi_thermal_zone_device_hot()  local
545 	acpi_bus_generate_netlink_event(tz->device->pnp.device_class,  in acpi_thermal_zone_device_hot()
546 					dev_name(&tz->device->dev),  in acpi_thermal_zone_device_hot()
552 	struct acpi_thermal *tz = thermal_zone_device_priv(thermal);  in acpi_thermal_zone_device_critical()  local
554 	acpi_bus_generate_netlink_event(tz->device->pnp.device_class,  in acpi_thermal_zone_device_critical()
555 					dev_name(&tz->device->dev),  in acpi_thermal_zone_device_critical()
592 static int acpi_thermal_zone_sysfs_add(struct acpi_thermal *tz)  in acpi_thermal_zone_sysfs_add()  argument
594 	struct device *tzdev = thermal_zone_device(tz->thermal_zone);  in acpi_thermal_zone_sysfs_add()
597 	ret = sysfs_create_link(&tz->device->dev.kobj,  in acpi_thermal_zone_sysfs_add()
603 				   &tz->device->dev.kobj, "device");  in acpi_thermal_zone_sysfs_add()
605 		sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");  in acpi_thermal_zone_sysfs_add()
610 static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz)  in acpi_thermal_zone_sysfs_remove()  argument
612 	struct device *tzdev = thermal_zone_device(tz->thermal_zone);  in acpi_thermal_zone_sysfs_remove()
614 	sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");  in acpi_thermal_zone_sysfs_remove()
618 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz,  in acpi_thermal_register_thermal_zone()  argument
626 		tz->thermal_zone = thermal_zone_device_register_with_trips(  in acpi_thermal_register_thermal_zone()
627 					"acpitz", trip_table, trip_count, tz,  in acpi_thermal_register_thermal_zone()
629 					tz->polling_frequency * 100);  in acpi_thermal_register_thermal_zone()
631 		tz->thermal_zone = thermal_tripless_zone_device_register(  in acpi_thermal_register_thermal_zone()
632 					"acpitz", tz, &acpi_thermal_zone_ops, NULL);  in acpi_thermal_register_thermal_zone()
634 	if (IS_ERR(tz->thermal_zone))  in acpi_thermal_register_thermal_zone()
635 		return PTR_ERR(tz->thermal_zone);  in acpi_thermal_register_thermal_zone()
637 	result = acpi_thermal_zone_sysfs_add(tz);  in acpi_thermal_register_thermal_zone()
641 	result = thermal_zone_device_enable(tz->thermal_zone);  in acpi_thermal_register_thermal_zone()
645 	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",  in acpi_thermal_register_thermal_zone()
646 		 thermal_zone_device_id(tz->thermal_zone));  in acpi_thermal_register_thermal_zone()
651 	acpi_thermal_zone_sysfs_remove(tz);  in acpi_thermal_register_thermal_zone()
653 	thermal_zone_device_unregister(tz->thermal_zone);  in acpi_thermal_register_thermal_zone()
658 static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)  in acpi_thermal_unregister_thermal_zone()  argument
660 	thermal_zone_device_disable(tz->thermal_zone);  in acpi_thermal_unregister_thermal_zone()
661 	acpi_thermal_zone_sysfs_remove(tz);  in acpi_thermal_unregister_thermal_zone()
662 	thermal_zone_device_unregister(tz->thermal_zone);  in acpi_thermal_unregister_thermal_zone()
663 	tz->thermal_zone = NULL;  in acpi_thermal_unregister_thermal_zone()
674 	struct acpi_thermal *tz = acpi_driver_data(device);  in acpi_thermal_notify()  local
676 	if (!tz)  in acpi_thermal_notify()
681 		acpi_queue_thermal_check(tz);  in acpi_thermal_notify()
685 		acpi_thermal_trips_update(tz, event);  in acpi_thermal_notify()
706 static void acpi_thermal_aml_dependency_fix(struct acpi_thermal *tz)  in acpi_thermal_aml_dependency_fix()  argument
708 	acpi_handle handle = tz->device->handle;  in acpi_thermal_aml_dependency_fix()
736 static void acpi_thermal_guess_offset(struct acpi_thermal *tz, long crit_temp)  in acpi_thermal_guess_offset()  argument
739 		tz->kelvin_offset = 273100;  in acpi_thermal_guess_offset()
741 		tz->kelvin_offset = 273200;  in acpi_thermal_guess_offset()
746 	struct acpi_thermal *tz = container_of(work, struct acpi_thermal,  in acpi_thermal_check_fn()  local
757 	if (!refcount_dec_not_one(&tz->thermal_check_count))  in acpi_thermal_check_fn()
760 	mutex_lock(&tz->thermal_check_lock);  in acpi_thermal_check_fn()
762 	thermal_zone_device_update(tz->thermal_zone, THERMAL_EVENT_UNSPECIFIED);  in acpi_thermal_check_fn()
764 	refcount_inc(&tz->thermal_check_count);  in acpi_thermal_check_fn()
766 	mutex_unlock(&tz->thermal_check_lock);  in acpi_thermal_check_fn()
769 static void acpi_thermal_free_thermal_zone(struct acpi_thermal *tz)  in acpi_thermal_free_thermal_zone()  argument
773 	acpi_handle_list_free(&tz->trips.passive.trip.devices);  in acpi_thermal_free_thermal_zone()
775 		acpi_handle_list_free(&tz->trips.active[i].trip.devices);  in acpi_thermal_free_thermal_zone()
777 	kfree(tz);  in acpi_thermal_free_thermal_zone()
785 	struct acpi_thermal *tz;  in acpi_thermal_add()  local
794 	tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL);  in acpi_thermal_add()
795 	if (!tz)  in acpi_thermal_add()
798 	tz->device = device;  in acpi_thermal_add()
799 	strscpy(tz->name, device->pnp.bus_id);  in acpi_thermal_add()
802 	device->driver_data = tz;  in acpi_thermal_add()
804 	acpi_thermal_aml_dependency_fix(tz);  in acpi_thermal_add()
807 	acpi_thermal_get_trip_points(tz);  in acpi_thermal_add()
809 	crit_temp = acpi_thermal_get_critical_trip(tz);  in acpi_thermal_add()
810 	hot_temp = acpi_thermal_get_hot_trip(tz);  in acpi_thermal_add()
813 	result = acpi_thermal_get_temperature(tz);  in acpi_thermal_add()
818 	acpi_execute_simple_method(tz->device->handle, "_SCP",  in acpi_thermal_add()
823 		tz->polling_frequency = tzp;  in acpi_thermal_add()
825 		acpi_thermal_get_polling_frequency(tz);  in acpi_thermal_add()
827 	acpi_thermal_guess_offset(tz, crit_temp);  in acpi_thermal_add()
833 		trip->temperature = acpi_thermal_temp(tz, crit_temp);  in acpi_thermal_add()
839 		trip->temperature = acpi_thermal_temp(tz, hot_temp);  in acpi_thermal_add()
843 	acpi_trip = &tz->trips.passive.trip;  in acpi_thermal_add()
845 		passive_delay = tz->trips.passive.delay;  in acpi_thermal_add()
848 		trip->temperature = acpi_thermal_temp(tz, acpi_trip->temp_dk);  in acpi_thermal_add()
854 		acpi_trip =  &tz->trips.active[i].trip;  in acpi_thermal_add()
860 		trip->temperature = acpi_thermal_temp(tz, acpi_trip->temp_dk);  in acpi_thermal_add()
868 	result = acpi_thermal_register_thermal_zone(tz, trip_table,  in acpi_thermal_add()
874 	refcount_set(&tz->thermal_check_count, 3);  in acpi_thermal_add()
875 	mutex_init(&tz->thermal_check_lock);  in acpi_thermal_add()
876 	INIT_WORK(&tz->thermal_check_work, acpi_thermal_check_fn);  in acpi_thermal_add()
879 		acpi_device_bid(device), deci_kelvin_to_celsius(tz->temp_dk));  in acpi_thermal_add()
890 	acpi_thermal_unregister_thermal_zone(tz);  in acpi_thermal_add()
892 	acpi_thermal_free_thermal_zone(tz);  in acpi_thermal_add()
899 	struct acpi_thermal *tz;  in acpi_thermal_remove()  local
904 	tz = acpi_driver_data(device);  in acpi_thermal_remove()
910 	acpi_thermal_unregister_thermal_zone(tz);  in acpi_thermal_remove()
911 	acpi_thermal_free_thermal_zone(tz);  in acpi_thermal_remove()
924 	struct acpi_thermal *tz;  in acpi_thermal_resume()  local
930 	tz = acpi_driver_data(to_acpi_device(dev));  in acpi_thermal_resume()
931 	if (!tz)  in acpi_thermal_resume()
935 		struct acpi_thermal_trip *acpi_trip = &tz->trips.active[i].trip;  in acpi_thermal_resume()
946 	acpi_queue_thermal_check(tz);  in acpi_thermal_resume()