[RFC,3/4] thermal:core:Add genetlink notifications for monitoring falling temperature

Message ID 20200710135154.181454-4-thara.gopinath@linaro.org
State New
Headers show
Series
  • [RFC,1/4] dt-bindings:thermal:Add cold trip point type
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Commit Message

Thara Gopinath July 10, 2020, 1:51 p.m.
Add notification calls for trip type THERMAL_TRIP_COLD when temperature
crosses the trip point in either direction.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>

---
 drivers/thermal/thermal_core.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

-- 
2.25.1

Patch

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 750a89f0c20a..e2302ca1cd3b 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -429,12 +429,21 @@  static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
 		tz->ops->get_trip_hyst(tz, trip, &hyst);
 
 	if (tz->last_temperature != THERMAL_TEMP_INVALID) {
-		if (tz->last_temperature < trip_temp &&
-		    tz->temperature >= trip_temp)
-			thermal_notify_tz_trip_up(tz->id, trip);
-		if (tz->last_temperature >= trip_temp &&
-		    tz->temperature < (trip_temp - hyst))
-			thermal_notify_tz_trip_down(tz->id, trip);
+		if (type == THERMAL_TRIP_COLD) {
+			if (tz->last_temperature > trip_temp &&
+			    tz->temperature <= trip_temp)
+				thermal_notify_tz_trip_down(tz->id, trip);
+			if (tz->last_temperature <= trip_temp &&
+			    tz->temperature > (trip_temp + hyst))
+				thermal_notify_tz_trip_up(tz->id, trip);
+		} else {
+			if (tz->last_temperature < trip_temp &&
+			    tz->temperature >= trip_temp)
+				thermal_notify_tz_trip_up(tz->id, trip);
+			if (tz->last_temperature >= trip_temp &&
+			    tz->temperature < (trip_temp - hyst))
+				thermal_notify_tz_trip_down(tz->id, trip);
+		}
 	}
 
 	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)