Add this into the class to simplify use of this function.
Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
---
pylibfdt/libfdt.i | 17 +++++++++++++++++
tests/pylibfdt_tests.py | 12 ++++++++++++
2 files changed, 29 insertions(+)
diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
index 1f6809e..47d34ae 100644
--- a/pylibfdt/libfdt.i
+++ b/pylibfdt/libfdt.i
@@ -185,6 +185,23 @@ class Fdt:
"""
return self._fdt
+ def subnode_offset(self, parentoffset, name, quiet=()):
+ """Get the offset of a named subnode
+
+ Args:
+ parentoffset: Offset of the parent node to check
+ name: Name of the required subnode, e.g. 'subnode@1'
+ quiet: Errors to ignore (empty to raise on all errors)
+
+ Returns:
+ The node offset of the found node, if any
+
+ Raises
+ FdtException if there is no node with that name, or other error
+ """
+ return check_err(fdt_subnode_offset(self._fdt, parentoffset, name),
+ quiet)
+
def path_offset(self, path, quiet=()):
"""Get the offset for a given path
diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
index a775d37..a6e3354 100644
--- a/tests/pylibfdt_tests.py
+++ b/tests/pylibfdt_tests.py
@@ -118,6 +118,18 @@ class PyLibfdtTests(unittest.TestCase):
fdt = libfdt.Fdt('a string')
self.assertEquals(e.exception.err, -libfdt.BADMAGIC)
+ def testSubnodeOffset(self):
+ """check that we can locate a subnode by name"""
+ node1 = self.fdt.path_offset('/subnode@1')
+ self.assertEquals(self.fdt.subnode_offset(0, 'subnode@1'), node1)
+
+ with self.assertRaises(FdtException) as e:
+ self.fdt.subnode_offset(0, 'missing')
+ self.assertEquals(e.exception.err, -libfdt.NOTFOUND)
+
+ node2 = self.fdt.path_offset('/subnode@1/subsubnode')
+ self.assertEquals(self.fdt.subnode_offset(node1, 'subsubnode'), node2)
+
def testPathOffset(self):
"""Check that we can find the offset of a node"""
self.assertEquals(self.fdt.path_offset('/'), 0)
--
2.14.1.480.gb18f417b89-goog
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