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Commit 76b1ae86 authored by Wei Ni's avatar Wei Ni Committed by Eduardo Valentin
Browse files

thermal: tegra: add get_trend ops 



Add support for get_trend ops that allows soctherm
sensors to be used with the step-wise governor.

Signed-off-by: default avatarWei Ni <wni@nvidia.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 3d88adf3

drivers/thermal/tegra/soctherm.c

+32 −0
Original line number Diff line number Diff line
@@ -488,9 +488,41 @@ static int tegra_thermctl_set_trip_temp(void *data, int trip, int temp) 
	return 0;

}



static int tegra_thermctl_get_trend(void *data, int trip,

				    enum thermal_trend *trend)

{

	struct tegra_thermctl_zone *zone = data;

	struct thermal_zone_device *tz = zone->tz;

	int trip_temp, temp, last_temp, ret;



	if (!tz)

		return -EINVAL;



	ret = tz->ops->get_trip_temp(zone->tz, trip, &trip_temp);

	if (ret)

		return ret;



	temp = READ_ONCE(tz->temperature);

	last_temp = READ_ONCE(tz->last_temperature);



	if (temp > trip_temp) {

		if (temp >= last_temp)

			*trend = THERMAL_TREND_RAISING;

		else

			*trend = THERMAL_TREND_STABLE;

	} else if (temp < trip_temp) {

		*trend = THERMAL_TREND_DROPPING;

	} else {

		*trend = THERMAL_TREND_STABLE;

	}



	return 0;

}



static const struct thermal_zone_of_device_ops tegra_of_thermal_ops = {

	.get_temp = tegra_thermctl_get_temp,

	.set_trip_temp = tegra_thermctl_set_trip_temp,

	.get_trend = tegra_thermctl_get_trend,

};



static int get_hot_temp(struct thermal_zone_device *tz, int *trip, int *temp)