[PATCH 06/17] pylibfdt: Add FdtRo.get_path()

[Alexey Charkov]

From: Luca Weiss <l...@z3ntu.xyz>

Add a new Python method wrapping fdt_get_path() from the C API.

This is a backport of dtc commit ed310803ea89 ("pylibfdt: add
FdtRo.get_path()"), without the dtc-side test, which has no counterpart
in U-Boot's test suite.

Signed-off-by: Luca Weiss <l...@z3ntu.xyz>
Reviewed-by: Simon Glass <s...@chromium.org>
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
[adapted to U-Boot]
Signed-off-by: Alexey Charkov <alch...@flipper.net>
---
 scripts/dtc/pylibfdt/libfdt.i_shipped | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/scripts/dtc/pylibfdt/libfdt.i_shipped 
b/scripts/dtc/pylibfdt/libfdt.i_shipped
index 735a3bab6d9f..634ccd2a829a 100644
--- a/scripts/dtc/pylibfdt/libfdt.i_shipped
+++ b/scripts/dtc/pylibfdt/libfdt.i_shipped
@@ -447,6 +447,29 @@ class FdtRo(object):
         """
         return fdt_get_alias(self._fdt, name)
 
+    def get_path(self, nodeoffset, quiet=()):
+        """Get the full path of a node
+
+        Args:
+            nodeoffset: Node offset to check
+
+        Returns:
+            Full path to the node
+
+        Raises:
+            FdtException if an error occurs
+        """
+        size = 1024
+        while True:
+            ret, path = fdt_get_path(self._fdt, nodeoffset, size)
+            if ret == -NOSPACE:
+                size = size * 2
+                continue
+            err = check_err(ret, quiet)
+            if err:
+                return err
+            return path
+
     def parent_offset(self, nodeoffset, quiet=()):
         """Get the offset of a node's parent
 
@@ -1120,6 +1143,11 @@ typedef uint32_t fdt32_t;
         }
 }
 
+%include "cstring.i"
+
+%cstring_output_maxsize(char *buf, int buflen);
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
+
 /* We have both struct fdt_property and a function fdt_property() */
 %warnfilter(302) fdt_property;
 

-- 
2.54.0