@@ -540,6 +540,115 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
return 0;
}
+static struct fwnode_handle *
+swnode_graph_find_next_port(const struct fwnode_handle *parent,
+ struct fwnode_handle *port)
+{
+ struct fwnode_handle *old = port;
+
+ while ((port = software_node_get_next_child(parent, old))) {
+ /*
+ * fwnode ports have naming style "port@", so we search for any
+ * children that follow that convention.
+ */
+ if (!strncmp(to_swnode(port)->node->name, "port@",
+ strlen("port@")))
+ return port;
+ old = port;
+ }
+
+ return NULL;
+}
+
+static struct fwnode_handle *
+software_node_graph_get_next_endpoint(const struct fwnode_handle *fwnode,
+ struct fwnode_handle *endpoint)
+{
+ struct swnode *swnode = to_swnode(fwnode);
+ struct fwnode_handle *parent;
+ struct fwnode_handle *port;
+
+ if (!swnode)
+ return NULL;
+
+ if (endpoint) {
+ port = software_node_get_parent(endpoint);
+ parent = software_node_get_parent(port);
+ } else {
+ parent = software_node_get_named_child_node(fwnode, "ports");
+ if (!parent)
+ parent = software_node_get(&swnode->fwnode);
+
+ port = swnode_graph_find_next_port(parent, NULL);
+ }
+
+ for (; port; port = swnode_graph_find_next_port(parent, port)) {
+ endpoint = software_node_get_next_child(port, endpoint);
+ if (endpoint) {
+ fwnode_handle_put(port);
+ break;
+ }
+ }
+
+ fwnode_handle_put(parent);
+
+ return endpoint;
+}
+
+static struct fwnode_handle *
+software_node_graph_get_remote_endpoint(const struct fwnode_handle *fwnode)
+{
+ struct swnode *swnode = to_swnode(fwnode);
+ const struct software_node_ref_args *ref;
+ const struct property_entry *prop;
+
+ if (!swnode)
+ return NULL;
+
+ prop = property_entry_get(swnode->node->properties, "remote-endpoint");
+ if (!prop || prop->type != DEV_PROP_REF || prop->is_inline)
+ return NULL;
+
+ ref = prop->pointer;
+
+ return software_node_get(software_node_fwnode(ref[0].node));
+}
+
+static struct fwnode_handle *
+software_node_graph_get_port_parent(struct fwnode_handle *fwnode)
+{
+ struct swnode *swnode = to_swnode(fwnode);
+
+ swnode = swnode->parent;
+ if (swnode && !strcmp(swnode->node->name, "ports"))
+ swnode = swnode->parent;
+
+ return swnode ? software_node_get(&swnode->fwnode) : NULL;
+}
+
+static int
+software_node_graph_parse_endpoint(const struct fwnode_handle *fwnode,
+ struct fwnode_endpoint *endpoint)
+{
+ struct swnode *swnode = to_swnode(fwnode);
+ const char *parent_name = swnode->parent->node->name;
+ int ret;
+
+ if (strlen("port@") >= strlen(parent_name) ||
+ strncmp(parent_name, "port@", strlen("port@")))
+ return -EINVAL;
+
+ /* Ports have naming style "port@n", we need to select the n */
+ ret = kstrtou32(parent_name + strlen("port@"), 10, &endpoint->port);
+ if (ret)
+ return ret;
+
+ endpoint->id = swnode->id;
+ endpoint->local_fwnode = fwnode;
+
+ return 0;
+}
+
static const struct fwnode_operations software_node_ops = {
.get = software_node_get,
.put = software_node_put,
@@ -551,7 +660,11 @@ static const struct fwnode_operations software_node_ops = {
.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,
- .get_reference_args = software_node_get_reference_args
+ .get_reference_args = software_node_get_reference_args,
+ .graph_get_next_endpoint = software_node_graph_get_next_endpoint,
+ .graph_get_remote_endpoint = software_node_graph_get_remote_endpoint,
+ .graph_get_port_parent = software_node_graph_get_port_parent,
+ .graph_parse_endpoint = software_node_graph_parse_endpoint,
};
/* -------------------------------------------------------------------------- */