From e2d5997ffdf5cbf4f7d53584dab2ffc673f50987 Mon Sep 17 00:00:00 2001 From: Philipp Tomsich Date: Fri, 23 Feb 2018 17:38:49 +0100 Subject: [PATCH] core: ofnode: add ofnode_get_parent function The Rockchip video drivers need to walk the ofnode-parrents to find an enclosing device that has a UCLASS_DISPLAY driver bound. This adds a ofnode_get_parent()-function that returns the parent-node. Signed-off-by: Philipp Tomsich Tested-by: Klaus Goger Reviewed-by: Anatolij Gustschin --- drivers/core/ofnode.c | 14 ++++++++++++++ include/dm/ofnode.h | 8 ++++++++ 2 files changed, 22 insertions(+) diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 98f4b539ea..dd6d57c49b 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -165,6 +165,20 @@ ofnode ofnode_next_subnode(ofnode node) fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node))); } +ofnode ofnode_get_parent(ofnode node) +{ + ofnode parent; + + assert(ofnode_valid(node)); + if (ofnode_is_np(node)) + parent = np_to_ofnode(of_get_parent(ofnode_to_np(node))); + else + parent.of_offset = fdt_parent_offset(gd->fdt_blob, + ofnode_to_offset(node)); + + return parent; +} + const char *ofnode_get_name(ofnode node) { assert(ofnode_valid(node)); diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index c359a60f95..6938e62993 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -301,6 +301,14 @@ ofnode ofnode_first_subnode(ofnode node); */ ofnode ofnode_next_subnode(ofnode node); +/** + * ofnode_get_parent() - get the ofnode's parent (enclosing ofnode) + * + * @node: valid node to look up + * @return ofnode reference of the parent node + */ +ofnode ofnode_get_parent(ofnode node); + /** * ofnode_get_name() - get the name of a node * -- 2.39.5