From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed, 20 May 2015 13:20:43 +0000 (+0200)
Subject: thermal: of: implement .set_trips for device tree thermal zones
X-Git-Tag: firefly_0821_release~2728
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d464660f056ca2f3a8beb4fd181b3eb08478884f;p=firefly-linux-kernel-4.4.55.git

thermal: of: implement .set_trips for device tree thermal zones

Change-Id: I566c468165c35e54a17663888539817246d0f0ed
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
---

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 57828841b6e6..27f078ce137f 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -101,6 +101,17 @@ static int of_thermal_get_temp(struct thermal_zone_device *tz,
 	return data->ops->get_temp(data->sensor_data, temp);
 }
 
+static int of_thermal_set_trips(struct thermal_zone_device *tz,
+			        int low, int high)
+{
+	struct __thermal_zone *data = tz->devdata;
+
+	if (!data->ops || !data->ops->set_trips)
+		return -ENOSYS;
+
+	return data->ops->set_trips(data->sensor_data, low, high);
+}
+
 /**
  * of_thermal_get_ntrips - function to export number of available trip
  *			   points.
@@ -427,6 +438,7 @@ thermal_zone_of_add_sensor(struct device_node *zone,
 
 	tzd->ops->get_temp = of_thermal_get_temp;
 	tzd->ops->get_trend = of_thermal_get_trend;
+	tzd->ops->set_trips = of_thermal_set_trips;
 	tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
 	mutex_unlock(&tzd->lock);
 
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 784a1d219f10..f4327e4b8097 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -334,12 +334,16 @@ struct thermal_genl_event {
  *
  * Optional:
  * @get_trend: a pointer to a function that reads the sensor temperature trend.
+ * @@set_trips: a pointer to a function that sets a temperature window. When this
+ *              window is left the driver must inform the thermal core via
+ *              thermal_zone_device_update.
  * @set_emul_temp: a pointer to a function that sets sensor emulated
  *		   temperature.
  */
 struct thermal_zone_of_device_ops {
 	int (*get_temp)(void *, int *);
 	int (*get_trend)(void *, long *);
+	int (*set_trips)(void *, int, int);
 	int (*set_emul_temp)(void *, int);
 	int (*set_trip_temp)(void *, int, int);
 };