[PATCH RFC 4/8] thermal:core:Add genetlink notifications for monitoring falling temperature

[Thara Gopinath]

Add notification calls for trip points that are being monitored for
falling temperatures.

Signed-off-by: Thara Gopinath <thara.gopinath@xxxxxxxxxx>
---
 drivers/thermal/thermal_core.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 72bf159bcecc..bfd436379408 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -417,6 +417,7 @@ static void handle_critical_trips(struct thermal_zone_device *tz,
 static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
 {
 	enum thermal_trip_type type;
+	enum thermal_trip_monitor_type mon_type;
 	int trip_temp, hyst = 0;
 
 	/* Ignore disabled trip points */
@@ -428,13 +429,25 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
 	if (tz->ops->get_trip_hyst)
 		tz->ops->get_trip_hyst(tz, trip, &hyst);
 
+	if (tz->ops->get_trip_mon_type)
+		tz->ops->get_trip_mon_type(tz, trip, &mon_type);
+
 	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 (mon_type == THERMAL_TRIP_MONITOR_FALLING) {
+			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)
-- 
2.25.1