thermal: core: Encapsulate tz->device field

There are still some drivers needing to play with the thermal zone device internals. That is not the best but until we can figure out if the information is really needed, let's encapsulate the field used in the thermal zone device structure, so we can move forward relocating the thermal zone device structure definition in the thermal framework private headers. Some drivers are accessing tz->device, that implies they need to have the knowledge of the thermal_zone_device structure but we want to self-encapsulate this structure and reduce the scope of the structure to the thermal core only. By adding this wrapper, these drivers won't need the thermal zone device structure definition and are no longer an obstacle to its relocation to the private thermal core headers. Signed-off-by: Daniel Lezcano <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
dlitz · Apr 27, 2023 · 7cefbaf · 7cefbaf
1 parent e4006bf
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diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
@@ -1398,6 +1398,12 @@ int thermal_zone_device_id(struct thermal_zone_device *tzd)
 }
 EXPORT_SYMBOL_GPL(thermal_zone_device_id);
 
+struct device *thermal_zone_device(struct thermal_zone_device *tzd)
+{
+	return &tzd->device;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device);
+
 /**
  * thermal_zone_device_unregister - removes the registered thermal zone device
  * @tz: the thermal zone device to remove

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
@@ -313,6 +313,7 @@ thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
 const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
 int thermal_zone_device_id(struct thermal_zone_device *tzd);
+struct device *thermal_zone_device(struct thermal_zone_device *tzd);
 
 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
 				     struct thermal_cooling_device *,