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authorWei Ni <wni@nvidia.com>2019-02-19 12:27:04 +0800
committerEduardo Valentin <edubezval@gmail.com>2019-02-20 17:23:38 -0800
commit76b1ae8698d63a15000068057ccae38ec763baaa (patch)
treef49bb8b448fd0d00f858a2e1727f53c67fcaef14 /drivers/thermal
parent3d88adf3ef17bbeb3799f3f64eb3f7a66416cdf4 (diff)
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: Wei Ni <wni@nvidia.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/tegra/soctherm.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
index b1ead6ea4c73..70043a28eb7a 100644
--- a/drivers/thermal/tegra/soctherm.c
+++ b/drivers/thermal/tegra/soctherm.c
@@ -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)