struct swnode *parent;
unsigned int allocated:1;
+ unsigned int managed:1;
};
static DEFINE_IDA(swnode_root_ids);
}
EXPORT_SYMBOL_GPL(device_remove_software_node);
+/**
+ * device_create_managed_software_node - Create a software node for a device
+ * @dev: The device the software node is assigned to.
+ * @properties: Device properties for the software node.
+ * @parent: Parent of the software node.
+ *
+ * Creates a software node as a managed resource for @dev, which means the
+ * lifetime of the newly created software node is tied to the lifetime of @dev.
+ * Software nodes created with this function should not be reused or shared
+ * because of that. The function takes a deep copy of @properties for the
+ * software node.
+ *
+ * Since the new software node is assigned directly to @dev, and since it should
+ * not be shared, it is not returned to the caller. The function returns 0 on
+ * success, and errno in case of an error.
+ */
+int device_create_managed_software_node(struct device *dev,
+ const struct property_entry *properties,
+ const struct software_node *parent)
+{
+ struct fwnode_handle *p = software_node_fwnode(parent);
+ struct fwnode_handle *fwnode;
+
+ if (parent && !p)
+ return -EINVAL;
+
+ fwnode = fwnode_create_software_node(properties, p);
+ if (IS_ERR(fwnode))
+ return PTR_ERR(fwnode);
+
+ to_swnode(fwnode)->managed = true;
+ set_secondary_fwnode(dev, fwnode);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(device_create_managed_software_node);
+
int software_node_notify(struct device *dev, unsigned long action)
{
struct swnode *swnode;
sysfs_remove_link(&swnode->kobj, dev_name(dev));
sysfs_remove_link(&dev->kobj, "software_node");
kobject_put(&swnode->kobj);
+
+ if (swnode->managed) {
+ set_secondary_fwnode(dev, NULL);
+ kobject_put(&swnode->kobj);
+ }
break;
default:
break;
int device_add_software_node(struct device *dev, const struct software_node *swnode);
void device_remove_software_node(struct device *dev);
+int device_create_managed_software_node(struct device *dev,
+ const struct property_entry *properties,
+ const struct software_node *parent);
+
#endif /* _LINUX_PROPERTY_H_ */