tools/thermal/thermal-engine: Take into account the thresholds API

Enhance the thermal-engine skeleton with the thresholds added in the
kernel and use the API exported by the thermal library.

Signed-off-by: Daniel Lezcano <[e-mail]>
Reviewed-by: Lukasz Luba <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

tools/thermal/thermal-engine/thermal-engine.c

···
 	struct thermal_handler *th;
 };
 
+static int show_threshold(struct thermal_threshold *th, __maybe_unused void *arg)
+{
+	INFO("threshold temp=%d, direction=%d\n",
+	     th->temperature, th->direction);
+
+	return 0;
+}
+
 static int show_trip(struct thermal_trip *tt, __maybe_unused void *arg)
 {
 	INFO("trip id=%d, type=%d, temp=%d, hyst=%d\n",
···
 
 	for_each_thermal_trip(tz->trip, show_trip, NULL);
 
+	for_each_thermal_threshold(tz->thresholds, show_threshold, NULL);
+
 	show_temp(tz, arg);
 
 	show_governor(tz, arg);
+
+	return 0;
+}
+
+static int set_threshold(struct thermal_zone *tz, __maybe_unused void *arg)
+{
+	struct thermal_handler *th = arg;
+	int thresholds[] = { 43000, 65000, 49000, 55000, 57000 };
+	size_t i;
+
+	INFO("Setting threshold for thermal zone '%s', id=%d\n", tz->name, tz->id);
+
+	if (thermal_cmd_threshold_flush(th, tz)) {
+		ERROR("Failed to flush all previous thresholds\n");
+		return -1;
+	}
+
+	for (i = 0; i < sizeof(thresholds) / sizeof(thresholds[0]); i++)
+		if (thermal_cmd_threshold_add(th, tz, thresholds[i],
+					      THERMAL_THRESHOLD_WAY_UP |
+					      THERMAL_THRESHOLD_WAY_DOWN)) {
+			ERROR("Failed to set threshold\n");
+			return -1;
+		}
 
 	return 0;
 }
···
 	return 0;
 }
 
+static int threshold_add(int tz_id, int temp, int direction, __maybe_unused void *arg)
+{
+	INFO("Threshold added tz_id=%d: temp=%d, direction=%d\n", tz_id, temp, direction);
+
+	return 0;
+}
+
+static int threshold_delete(int tz_id, int temp, int direction, __maybe_unused void *arg)
+{
+	INFO("Threshold deleted tz_id=%d: temp=%d, direction=%d\n", tz_id, temp, direction);
+
+	return 0;
+}
+
+static int threshold_flush(int tz_id, __maybe_unused void *arg)
+{
+	INFO("Thresholds flushed tz_id=%d\n", tz_id);
+
+	return 0;
+}
+
+static int threshold_up(int tz_id, int temp, int prev_temp, __maybe_unused void *arg)
+{
+	INFO("Threshold crossed way up tz_id=%d: temp=%d, prev_temp=%d\n",
+	     tz_id, temp, prev_temp);
+
+	return 0;
+}
+
+static int threshold_down(int tz_id, int temp, int prev_temp, __maybe_unused void *arg)
+{
+	INFO("Threshold crossed way down tz_id=%d: temp=%d, prev_temp=%d\n",
+	     tz_id, temp, prev_temp);
+
+	return 0;
+}
+
 static struct thermal_ops ops = {
-	.events.tz_create	= tz_create,
-	.events.tz_delete	= tz_delete,
-	.events.tz_disable	= tz_disable,
-	.events.tz_enable	= tz_enable,
-	.events.trip_high	= trip_high,
-	.events.trip_low	= trip_low,
-	.events.trip_add	= trip_add,
-	.events.trip_delete	= trip_delete,
-	.events.trip_change	= trip_change,
-	.events.cdev_add	= cdev_add,
-	.events.cdev_delete	= cdev_delete,
-	.events.cdev_update	= cdev_update,
-	.events.gov_change	= gov_change
+	.events.tz_create		= tz_create,
+	.events.tz_delete		= tz_delete,
+	.events.tz_disable		= tz_disable,
+	.events.tz_enable		= tz_enable,
+	.events.trip_high		= trip_high,
+	.events.trip_low		= trip_low,
+	.events.trip_add		= trip_add,
+	.events.trip_delete		= trip_delete,
+	.events.trip_change		= trip_change,
+	.events.cdev_add		= cdev_add,
+	.events.cdev_delete		= cdev_delete,
+	.events.cdev_update		= cdev_update,
+	.events.gov_change		= gov_change,
+	.events.threshold_add		= threshold_add,
+	.events.threshold_delete	= threshold_delete,
+	.events.threshold_flush		= threshold_flush,
+	.events.threshold_up		= threshold_up,
+	.events.threshold_down		= threshold_down,
 };
 
 static int thermal_event(__maybe_unused int fd, __maybe_unused void *arg)
···
 	THERMAL_ENGINE_DAEMON_ERROR,
 	THERMAL_ENGINE_LOG_ERROR,
 	THERMAL_ENGINE_THERMAL_ERROR,
+	THERMAL_ENGINE_THRESHOLD_ERROR,
 	THERMAL_ENGINE_MAINLOOP_ERROR,
 };
 
···
 		ERROR("No thermal zone available\n");
 		return THERMAL_ENGINE_THERMAL_ERROR;
 	}
+
+	for_each_thermal_zone(td.tz, set_threshold, td.th);
 
 	for_each_thermal_zone(td.tz, show_tz, td.th);