thermal/drivers/rcar: Use generic thermal_zone_get_trip() function

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert ops content logic into generic trip points and register them with the
thermal zone.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20221003092602.1323944-23-daniel.lezcano@linaro.org

drivers/thermal/rcar_thermal.c

@@ -278,52 +278,12 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 	return rcar_thermal_get_current_temp(priv, temp);
 }
 
-static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
-				      int trip, enum thermal_trip_type *type)
-{
-	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
-	struct device *dev = rcar_priv_to_dev(priv);
-
-	/* see rcar_thermal_get_temp() */
-	switch (trip) {
-	case 0: /* +90 <= temp */
-		*type = THERMAL_TRIP_CRITICAL;
-		break;
-	default:
-		dev_err(dev, "rcar driver trip error\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone,
-				      int trip, int *temp)
-{
-	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
-	struct device *dev = rcar_priv_to_dev(priv);
-
-	/* see rcar_thermal_get_temp() */
-	switch (trip) {
-	case 0: /* +90 <= temp */
-		*temp = MCELSIUS(90);
-		break;
-	default:
-		dev_err(dev, "rcar driver trip error\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static const struct thermal_zone_device_ops rcar_thermal_zone_of_ops = {
+static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 };
 
-static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
-	.get_temp	= rcar_thermal_get_temp,
-	.get_trip_type	= rcar_thermal_get_trip_type,
-	.get_trip_temp	= rcar_thermal_get_trip_temp,
+static struct thermal_trip trips[] = {
+	{ .type = THERMAL_TRIP_CRITICAL, .temperature = 90000 }
 };
 
 /*
@@ -529,11 +489,10 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 		if (chip->use_of_thermal) {
 			priv->zone = devm_thermal_of_zone_register(
 						dev, i, priv,
-						&rcar_thermal_zone_of_ops);
+						&rcar_thermal_zone_ops);
 		} else {
-			priv->zone = thermal_zone_device_register(
-						"rcar_thermal",
-						1, 0, priv,
+			priv->zone = thermal_zone_device_register_with_trips(
+				"rcar_thermal", trips, ARRAY_SIZE(trips), 0, priv,
 						&rcar_thermal_zone_ops, NULL, 0,
 						idle);