Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 34479820 authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Rafael J. Wysocki
Browse files

software node: Implement get_named_child_node fwnode callback 



This makes it possible to support drivers that use
fwnode_get_named_child_node() and device_get_named_child_node()
functions.

The node name is for now taken from a device property named
"name". That mimics the old style of naming of the nodes in
devicetree (though with modern flattened DT, the name is
matched against the actual node-name, it used to be done
with a property "name"). In Open Firmware DT the "name"
property is also still being used.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 2b6e4924

drivers/base/swnode.c

+23 −0
Original line number Diff line number Diff line
@@ -499,6 +499,28 @@ software_node_get_next_child(const struct fwnode_handle *fwnode, 
	return &c->fwnode;

}



static struct fwnode_handle *

software_node_get_named_child_node(const struct fwnode_handle *fwnode,

				   const char *childname)

{

	struct software_node *swnode = to_software_node(fwnode);

	const struct property_entry *prop;

	struct software_node *child;



	if (!swnode || list_empty(&swnode->children))

		return NULL;



	list_for_each_entry(child, &swnode->children, entry) {

		prop = property_entry_get(child->properties, "name");

		if (!prop)

			continue;

		if (!strcmp(childname, prop->value.str)) {

			kobject_get(&child->kobj);

			return &child->fwnode;

		}

	}

	return NULL;

}



static const struct fwnode_operations software_node_ops = {

	.get = software_node_get,
@@ -508,6 +530,7 @@ static const struct fwnode_operations software_node_ops = { 
	.property_read_string_array = software_node_read_string_array,

	.get_parent = software_node_get_parent,

	.get_next_child_node = software_node_get_next_child,

	.get_named_child_node = software_node_get_named_child_node,

};



/* -------------------------------------------------------------------------- */