[PATCH] pylibfdt: Add support for fdt_get_alias()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



Add this into the class to simplify use of this function.

Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xxxxxxxxxx>
---
 pylibfdt/libfdt.i       | 12 ++++++++++++
 tests/pylibfdt_tests.py |  7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
index 643f95d..afed659 100644
--- a/pylibfdt/libfdt.i
+++ b/pylibfdt/libfdt.i
@@ -431,6 +431,18 @@ class FdtRo(object):
         """
         return fdt_get_phandle(self._fdt, nodeoffset)
 
+    def get_alias(self, name):
+        """Get the full path referenced by a given alias
+
+        Args:
+            name: name of the alias to lookup
+
+        Returns:
+            A pointer to the expansion of the alias named 'name', if it exists
+            NULL, if the given alias or the /aliases node does not exist
+        """
+        return fdt_get_alias(self._fdt, name)
+
     def parent_offset(self, nodeoffset, quiet=()):
         """Get the offset of a node's parent
 
diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
index c055f01..42f31ba 100644
--- a/tests/pylibfdt_tests.py
+++ b/tests/pylibfdt_tests.py
@@ -77,6 +77,7 @@ class PyLibfdtBasicTests(unittest.TestCase):
         """Read in the device tree we use for testing"""
         self.fdt = _ReadFdt('test_tree1.dtb')
         self.fdt2 = _ReadFdt('test_props.dtb')
+        self.fdt3 = _ReadFdt('aliases.dtb')
 
     def GetPropList(self, node_path):
         """Read a list of properties from a node
@@ -340,6 +341,12 @@ class PyLibfdtBasicTests(unittest.TestCase):
         node2 = self.fdt.path_offset('/subnode@2')
         self.assertEquals(0x2000, self.fdt.get_phandle(node2))
 
+    def testGetAlias(self):
+        """Test for the get_alias() method"""
+        self.assertEquals("/subnode@1", self.fdt3.get_alias('s1'))
+        self.assertEquals("/subnode@1/subsubnode", self.fdt3.get_alias('ss1'))
+        self.assertEquals("/subnode@1/subsubnode/subsubsubnode", self.fdt3.get_alias('sss1'))
+
     def testParentOffset(self):
         """Test for the parent_offset() method"""
         self.assertEquals(-libfdt.NOTFOUND,
-- 
2.7.4




[Index of Archives]     [Device Tree]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]

  Powered by Linux