1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 14d3b1b94c4f..f02c57c986f0 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -459,6 +459,59 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
 	thermal_zone_device_init(tz);
 }
 
+static int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+					enum thermal_device_mode mode)
+{
+	int ret = 0;
+
+	mutex_lock(&tz->lock);
+
+	/* do nothing if mode isn't changing */
+	if (mode == tz->mode) {
+		mutex_unlock(&tz->lock);
+
+		return ret;
+	}
+
+	if (tz->ops->set_mode)
+		ret = tz->ops->set_mode(tz, mode);
+
+	if (!ret)
+		tz->mode = mode;
+
+	mutex_unlock(&tz->lock);
+
+	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+
+	return ret;
+}
+
+int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_enable);
+
+int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_disable);
+
+int thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
+{
+	enum thermal_device_mode mode;
+
+	mutex_lock(&tz->lock);
+
+	mode = tz->mode;
+
+	mutex_unlock(&tz->lock);
+
+	return mode == THERMAL_DEVICE_ENABLED;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_is_enabled);
+
 void thermal_zone_device_update(struct thermal_zone_device *tz,
 				enum thermal_notify_event event)
 {