@@ -1802,3 +1802,23 @@ int ofnode_copy_props(ofnode dst, ofnode src)
return 0;
}
+
+int ofnode_copy_node(ofnode dst_parent, const char *name, ofnode src,
+ ofnode *nodep)
+{
+ ofnode node;
+ int ret;
+
+ ret = ofnode_add_subnode(dst_parent, name, &node);
+ if (ret) {
+ if (ret == -EEXIST)
+ *nodep = node;
+ return log_msg_ret("add", ret);
+ }
+ ret = ofnode_copy_props(node, src);
+ if (ret)
+ return log_msg_ret("cpy", ret);
+ *nodep = node;
+
+ return 0;
+}
@@ -1620,4 +1620,19 @@ int ofnode_add_subnode(ofnode parent, const char *name, ofnode *nodep);
*/
int ofnode_copy_props(ofnode dst, ofnode src);
+/**
+ * ofnode_copy_node() - Copy a node to another place
+ *
+ * If a node with this name already exists in dst_parent, this returns an
+ * .error
+ *
+ * @dst_parent: Parent of the newly copied node
+ * @name: Name to give the new node
+ * @src: Source node to copy
+ * @nodep: Returns the new node, or the existing node if there is one
+ * Return: 0 if OK, -EEXIST if dst_parent already has a node with this parent
+ */
+int ofnode_copy_node(ofnode dst_parent, const char *name, ofnode src,
+ ofnode *nodep);
+
#endif
@@ -1362,3 +1362,66 @@ static int dm_test_oftree_new(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_oftree_new, UT_TESTF_SCAN_FDT);
+
+static int check_copy_node(struct unit_test_state *uts, ofnode dst, ofnode src,
+ ofnode *nodep)
+{
+ u32 reg[2], val;
+ ofnode node;
+
+ ut_assertok(ofnode_copy_node(dst, "copy-test", src, &node));
+
+ ut_assertok(ofnode_read_u32(node, "ping-expect", &val));
+ ut_asserteq(3, val);
+
+ ut_asserteq_str("denx,u-boot-fdt-test",
+ ofnode_read_string(node, "compatible"));
+
+ /* check that a property with the same name is overwritten */
+ ut_assertok(ofnode_read_u32_array(node, "reg", reg, ARRAY_SIZE(reg)));
+ ut_asserteq(3, reg[0]);
+ ut_asserteq(1, reg[1]);
+
+ /* reset the compatible so the live tree does not change */
+ ut_assertok(ofnode_write_string(node, "compatible", "nothing"));
+ *nodep = node;
+
+ return 0;
+}
+
+static int dm_test_ofnode_copy_node(struct unit_test_state *uts)
+{
+ ofnode src, dst, node, try;
+
+ /*
+ * These nodes are chosen so that the src node is before the destination
+ * node in the tree. This doesn't matter with livetree, but with
+ * flattree any attempt to insert a property earlier in the tree will
+ * mess up the offsets after it.
+ */
+ src = ofnode_path("/b-test");
+ dst = ofnode_path("/some-bus");
+
+ ut_assertok(check_copy_node(uts, dst, src, &node));
+
+ /* check trying to copy over an existing node */
+ ut_asserteq(-EEXIST, ofnode_copy_node(dst, "copy-test", src, &try));
+ ut_asserteq(try.of_offset, node.of_offset);
+
+ return 0;
+}
+DM_TEST(dm_test_ofnode_copy_node, UT_TESTF_SCAN_FDT);
+
+/* test ofnode_copy_node() with the 'other' tree */
+static int dm_test_ofnode_copy_node_ot(struct unit_test_state *uts)
+{
+ oftree otree = get_other_oftree(uts);
+ ofnode src, dst, node;
+
+ src = ofnode_path("/b-test");
+ dst = oftree_path(otree, "/node/subnode2");
+ ut_assertok(check_copy_node(uts, dst, src, &node));
+
+ return 0;
+}
+DM_TEST(dm_test_ofnode_copy_node_ot, UT_TESTF_SCAN_FDT | UT_TESTF_OTHER_FDT);
Add a function to copy a node to another place under a new name. This is useful at least for testing, since copying a test node with existing properties is easier than writing the code to generate it all afresh. Signed-off-by: Simon Glass <sjg@chromium.org> --- (no changes since v1) drivers/core/ofnode.c | 20 ++++++++++++++ include/dm/ofnode.h | 15 +++++++++++ test/dm/ofnode.c | 63 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 98 insertions(+)