drivers/thermal/thermal_acpi.c

1 // SPDX-License-Identifier: GPL-2.0
6  * Library routines for populating a generic thermal trip point structure
15  * Minimum temperature for full military grade is 218°K (-55°C) and
19  * bogus and we can assume the firmware has no data to provide.
30 	status = acpi_evaluate_integer(adev->handle, obj_name, NULL, &temp);  in thermal_acpi_trip_temp()
32 		acpi_handle_debug(adev->handle, "%s evaluation failed\n", obj_name);  in thermal_acpi_trip_temp()
33 		return -ENODATA;  in thermal_acpi_trip_temp()
39 		acpi_handle_debug(adev->handle, "%s result %llu out of range\n",  in thermal_acpi_trip_temp()
48  * thermal_acpi_active_trip_temp - Retrieve active trip point temperature
50  * @id: Active cooling level (0 - 9).
51  * @ret_temp: Address to store the retrieved temperature value on success.
53  * Evaluate the _ACx object for the thermal zone represented by @adev to obtain
54  * the temperature of the active cooling trip point corresponding to the active
64 		return -EINVAL;  in thermal_acpi_active_trip_temp()
71  * thermal_acpi_passive_trip_temp - Retrieve passive trip point temperature
73  * @ret_temp: Address to store the retrieved temperature value on success.
75  * Evaluate the _PSV object for the thermal zone represented by @adev to obtain
76  * the temperature of the passive cooling trip point.
78  * Return 0 on success or -ENODATA on failure.
87  * thermal_acpi_hot_trip_temp - Retrieve hot trip point temperature
89  * @ret_temp: Address to store the retrieved temperature value on success.
91  * Evaluate the _HOT object for the thermal zone represented by @adev to obtain
92  * the temperature of the trip point at which the system is expected to be put
95  * Return 0 on success or -ENODATA on failure.
104  * thermal_acpi_critical_trip_temp - Retrieve critical trip point temperature
106  * @ret_temp: Address to store the retrieved temperature value on success.
108  * Evaluate the _CRT object for the thermal zone represented by @adev to obtain
109  * the temperature of the critical cooling trip point.
111  * Return 0 on success or -ENODATA on failure.