diff options
| author | Jeff Brasen <jbrasen@nvidia.com> | 2023-11-10 00:03:21 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-11-22 14:33:17 +0100 |
| commit | a2ee7581afd59015b8f9ae01fad131aed9f26f01 (patch) | |
| tree | c6ae0e01235164e53b68d9e04125a4697a1edf5c /drivers/acpi | |
| parent | 9c8647224e9fabb765019193aa43c054a638f808 (diff) | |
| download | linux-a2ee7581afd59015b8f9ae01fad131aed9f26f01.tar.gz | |
ACPI: thermal: Add Thermal fast Sampling Period (_TFP) support
Add support of "Thermal fast Sampling Period (_TFP)" for passive
cooling.
As per the ACPI specification (ACPI 6.5, Section 11.4.17 "_TFP (Thermal
fast Sampling Period)", _TFP overrides _TSP ("Thermal Sampling Period"
if both are present in a Thermal zone.
Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
Co-developed-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/thermal.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 6c29a266dbd0b3..ee28ca93d98345 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -92,7 +92,7 @@ struct acpi_thermal_passive { struct acpi_thermal_trip trip; unsigned long tc1; unsigned long tc2; - unsigned long tsp; + unsigned long delay; }; struct acpi_thermal_active { @@ -396,11 +396,17 @@ static bool passive_trip_params_init(struct acpi_thermal *tz) tz->trips.passive.tc2 = tmp; + status = acpi_evaluate_integer(tz->device->handle, "_TFP", NULL, &tmp); + if (ACPI_SUCCESS(status)) { + tz->trips.passive.delay = tmp; + return true; + } + status = acpi_evaluate_integer(tz->device->handle, "_TSP", NULL, &tmp); if (ACPI_FAILURE(status)) return false; - tz->trips.passive.tsp = tmp; + tz->trips.passive.delay = tmp * 100; return true; } @@ -896,7 +902,7 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_trip = &tz->trips.passive.trip; if (acpi_thermal_trip_valid(acpi_trip)) { - passive_delay = tz->trips.passive.tsp * 100; + passive_delay = tz->trips.passive.delay; trip->type = THERMAL_TRIP_PASSIVE; trip->temperature = acpi_thermal_temp(tz, acpi_trip->temp_dk); |