drivers/core/ofnode.c

63 	oftree tree;
72 			log_err("Failed to create live tree: err=%d\n", ret);
75 		tree = oftree_from_np(root);
77 		return tree;
87 				log_err("Invalid device tree blob header\n");
91 			/* register the new tree */
94 			log_debug("oftree: registered tree %d: %p\n", i, fdt);
103 	tree.fdt = fdt;
105 	return tree;
110 	oftree tree = oftree_null();
119 		tree = oftree_from_np(root);
128 		/* register the new tree with a small size */
136 		tree.fdt = fdt;
138 	*treep = tree;
143 void oftree_dispose(oftree tree)
146 		of_live_free(tree.np);
155 			log_debug("Invalid tree ID %x\n", i);
200 	oftree tree;
209 	tree.fdt = fdt;
211 	return tree;
217  * @other_node: Node in the same tree to use as a reference
251 int oftree_to_fdt(oftree tree, struct abuf *buf)
256 		ret = of_live_flatten(ofnode_to_np(oftree_root(tree)), buf);
260 		void *fdt = oftree_lookup_fdt(tree);
270  * ofnode_from_tree_offset() - get an ofnode from a tree offset (flat tree)
272  * Looks up the tree and returns an ofnode with the correct of_offset (i.e.
273  * containing the tree ID).
275  * If @offset is < 0 then this returns an ofnode with that offset and no tree
278  * @tree: tree to check
279  * @offset: offset within that tree (can be < 0)
282 static ofnode ofnode_from_tree_offset(oftree tree, int offset)
287 		int tree_id = oftree_find(tree.fdt);
721 ofnode oftree_get_by_phandle(oftree tree, uint phandle)
726 		node = np_to_ofnode(of_find_node_by_phandle(tree.np, phandle));
728 		node = ofnode_from_tree_offset(tree,
729 			fdt_node_offset_by_phandle(oftree_lookup_fdt(tree),
951 ofnode oftree_root(oftree tree)
954 		return np_to_ofnode(tree.np);
956 		return ofnode_from_tree_offset(tree, 0);
960 ofnode oftree_path(oftree tree, const char *path)
963 		return np_to_ofnode(of_find_node_opts_by_path(tree.np, path,
965 	} else if (*path != '/' && tree.fdt != gd->fdt_blob) {
968 		int offset = fdt_path_offset(tree.fdt, path);
970 		return ofnode_from_tree_offset(tree, offset);