int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
				       void *data, struct drm_file *file_priv)
{
	struct drm_mode_connector_set_property *out_resp = data;
	struct drm_mode_object *obj;
	struct drm_property *property;
	struct drm_connector *connector;
	int ret = -EINVAL;
	int i;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EINVAL;

	mutex_lock(&dev->mode_config.mutex);

	obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
	if (!obj) {
		goto out;
	}
	connector = obj_to_connector(obj);

	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		if (connector->property_ids[i] == out_resp->prop_id)
			break;
	}

	if (i == DRM_CONNECTOR_MAX_PROPERTY) {
		goto out;
	}

	obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
	if (!obj) {
		goto out;
	}
	property = obj_to_property(obj);

	if (property->flags & DRM_MODE_PROP_IMMUTABLE)
		goto out;

	if (property->flags & DRM_MODE_PROP_RANGE) {
		if (out_resp->value < property->values[0])
			goto out;

		if (out_resp->value > property->values[1])
			goto out;
	} else {
		int found = 0;
		for (i = 0; i < property->num_values; i++) {
			if (property->values[i] == out_resp->value) {
				found = 1;
				break;
			}
		}
		if (!found) {
			goto out;
		}
	}

	/* Do DPMS ourselves */
	if (property == connector->dev->mode_config.dpms_property) {
		if (connector->funcs->dpms)
			(*connector->funcs->dpms)(connector, (int) out_resp->value);
		ret = 0;
	} else if (connector->funcs->set_property)
		ret = connector->funcs->set_property(connector, property, out_resp->value);

	/* store the property value if successful */
	if (!ret)
		drm_connector_property_set_value(connector, property, out_resp->value);
out:
	mutex_unlock(&dev->mode_config.mutex);
	return ret;
}
int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
				       void *data, struct drm_file *file_priv)
{
	struct drm_mode_connector_set_property *out_resp = data;
	struct drm_mode_object *obj;
	struct drm_property *property;
	struct drm_connector *connector;
	int ret = -EINVAL;
	int i;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EINVAL;

	mutex_lock(&dev->mode_config.mutex);

	obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
	if (!obj) {
		goto out;
	}
	connector = obj_to_connector(obj);

	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		if (connector->property_ids[i] == out_resp->prop_id)
			break;
	}

	if (i == DRM_CONNECTOR_MAX_PROPERTY) {
		goto out;
	}

	obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
	if (!obj) {
		goto out;
	}
	property = obj_to_property(obj);

	if (property->flags & DRM_MODE_PROP_IMMUTABLE)
		goto out;

	if (property->flags & DRM_MODE_PROP_RANGE) {
		if (out_resp->value < property->values[0])
			goto out;

		if (out_resp->value > property->values[1])
			goto out;
	} else {
		int found = 0;
		for (i = 0; i < property->num_values; i++) {
			if (property->values[i] == out_resp->value) {
				found = 1;
				break;
			}
		}
		if (!found) {
			goto out;
		}
	}

	 
	if (property == connector->dev->mode_config.dpms_property) {
		if (connector->funcs->dpms)
			(*connector->funcs->dpms)(connector, (int) out_resp->value);
		ret = 0;
	} else if (connector->funcs->set_property)
		ret = connector->funcs->set_property(connector, property, out_resp->value);

	 
	if (!ret)
		drm_connector_property_set_value(connector, property, out_resp->value);
out:
	mutex_unlock(&dev->mode_config.mutex);
	return ret;
}