eaw/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

dm: core: Allow obtaining a node offset in the same tree

Browse Source 
In some cases we want to obtain an ofnode in the same tree as a different
ofnode, such as when looking up a subnode. At present this is trivial,
since there is only one tree. When there are multiple trees, this
implementation will change.

Also move the ofnode_to_offset() function up higher in the header file,
since we will need to provide a different implementation with multiple
trees.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-09-06 20:27:23 -06:00
committed by Tom Rini
parent 928d267aee
commit 2187cb7e4a
2 changed files with 42 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
include/dm/ofnode.h
View File

@@ -54,6 +54,23 @@ static inline void *ofnode_to_fdt(ofnode node)
return (void *)gd->fdt_blob;
}
/**
* ofnode_to_offset() - convert an ofnode to a flat DT offset
*
* This cannot be called if the reference contains a node pointer.
*
* @node: Reference containing offset (possibly invalid)
* Return: DT offset (can be -1)
*/
static inline int ofnode_to_offset(ofnode node)
{
#ifdef OF_CHECKS
if (of_live_active())
return -1;
#endif
return node.of_offset;
}
/**
* ofnode_to_np() - convert an ofnode to a live DT node pointer
*
@@ -72,20 +89,22 @@ static inline struct device_node *ofnode_to_np(ofnode node)
}
/**
* ofnode_to_offset() - convert an ofnode to a flat DT offset
* noffset_to_ofnode() - convert a DT offset to an ofnode
*
* This cannot be called if the reference contains a node pointer.
*
* @node: Reference containing offset (possibly invalid)
* Return: DT offset (can be -1)
* @other_node: Node in the same tree to use as a reference
* @of_offset: DT offset (either valid, or -1)
* Return: reference to the associated DT offset
*/
static inline int ofnode_to_offset(ofnode node)
static inline ofnode noffset_to_ofnode(ofnode other_node, int of_offset)
{
#ifdef OF_CHECKS
ofnode node;
if (of_live_active())
return -1;
#endif
return node.of_offset;
node.np = NULL;
else
node.of_offset = of_offset;
return node;
}
/**
@@ -1175,8 +1194,9 @@ ofnode ofnode_by_compatible(ofnode from, const char *compat);
* Find the next node after @from that has a @propname with a value
* @propval and a length @proplen.
*
* @from: ofnode to start from (use ofnode_null() to start at the
* beginning)
* @from: ofnode to start from. Use ofnode_null() to start at the
* beginning, or the return value from oftree_root() to start at the first
* child of the root
* @propname: property name to check
* @propval: property value to search for
* @proplen: length of the value in propval