thermal/drivers/thermal_of: Add change_mode ops support for thermal_of sensor

The sensor driver which register through thermal_of interface doesn't
have an option to get thermal zone mode change notification from
thermal core.

Add support for change_mode ops in thermal_of interface so that sensor
driver can use this ops for mode change notification.

Signed-off-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
Link: https://lore.kernel.org/r/1646767586-31908-1-git-send-email-quic_manafm@quicinc.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 9233f7e..da48480 100644 (file)
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -203,6 +203,14 @@ static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
        return data->ops->get_trend(data->sensor_data, trip, trend);
 }
 
+static int of_thermal_change_mode(struct thermal_zone_device *tz,
+                               enum thermal_device_mode mode)
+{
+       struct __thermal_zone *data = tz->devdata;
+
+       return data->ops->change_mode(data->sensor_data, mode);
+}
+
 static int of_thermal_bind(struct thermal_zone_device *thermal,
                           struct thermal_cooling_device *cdev)
 {
@@ -408,6 +416,9 @@ thermal_zone_of_add_sensor(struct device_node *zone,
        if (ops->set_emul_temp)
                tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
 
+       if (ops->change_mode)
+               tzd->ops->change_mode = of_thermal_change_mode;
+
        mutex_unlock(&tzd->lock);
 
        return tzd;
@@ -569,6 +580,7 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
        tzd->ops->get_temp = NULL;
        tzd->ops->get_trend = NULL;
        tzd->ops->set_emul_temp = NULL;
+       tzd->ops->change_mode = NULL;
 
        tz->ops = NULL;
        tz->sensor_data = NULL;

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index c314893..365733b 100644 (file)
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -299,6 +299,8 @@ struct thermal_zone_params {
  *                temperature.
  * @set_trip_temp: a pointer to a function that sets the trip temperature on
  *                hardware.
+ * @change_mode: a pointer to a function that notifies the thermal zone
+ *                mode change.
  */
 struct thermal_zone_of_device_ops {
        int (*get_temp)(void *, int *);
@@ -306,6 +308,7 @@ struct thermal_zone_of_device_ops {
        int (*set_trips)(void *, int, int);
        int (*set_emul_temp)(void *, int);
        int (*set_trip_temp)(void *, int, int);
+       int (*change_mode) (void *, enum thermal_device_mode);
 };
 
 /* Function declarations */