Add this into the class to simplify use of this function.
Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
---
pylibfdt/libfdt.i | 15 +++++++++++++++
tests/pylibfdt_tests.py | 13 +++++++++++++
2 files changed, 28 insertions(+)
diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
index 0731202..5a1eba5 100644
--- a/pylibfdt/libfdt.i
+++ b/pylibfdt/libfdt.i
@@ -360,6 +360,21 @@ class Fdt:
"""
return fdt_get_phandle(self._fdt, nodeoffset)
+ def parent_offset(self, nodeoffset, quiet=()):
+ """Get the offset of a node's parent
+
+ Args:
+ nodeoffset: Node offset to check
+ quiet: Errors to ignore (empty to raise on all errors)
+
+ Returns:
+ The offset of the parent node, if any
+
+ Raises:
+ FdtException if no parent found or other error occurs
+ """
+ return check_err(fdt_parent_offset(self._fdt, nodeoffset), quiet)
+
class Property:
"""Holds a device tree property name and value.
diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
index 14820d5..6b024d4 100644
--- a/tests/pylibfdt_tests.py
+++ b/tests/pylibfdt_tests.py
@@ -295,5 +295,18 @@ class PyLibfdtTests(unittest.TestCase):
node2 = self.fdt.path_offset('/subnode@2')
self.assertEquals(0x2000, self.fdt.get_phandle(node2))
+ def testParentOffset(self):
+ """Test for the parent_offset() method"""
+ self.assertEquals(-libfdt.NOTFOUND,
+ self.fdt.parent_offset(0, QUIET_NOTFOUND))
+ with self.assertRaises(FdtException) as e:
+ self.fdt.parent_offset(0)
+ self.assertEquals(e.exception.err, -libfdt.NOTFOUND)
+
+ node1 = self.fdt.path_offset('/subnode@2')
+ self.assertEquals(0, self.fdt.parent_offset(node1))
+ node2 = self.fdt.path_offset('/subnode@2/subsubnode@0')
+ self.assertEquals(node1, self.fdt.parent_offset(node2))
+
if __name__ == "__main__":
unittest.main()
--
2.14.1.480.gb18f417b89-goog
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