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(+)
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index d2bdb8b9af1c..403ee06ad94b 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -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; +} diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index 0b96ab34ede0..7eb04accd62c 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -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 diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c index 594116e3c045..5459a9afbb99 100644 --- a/test/dm/ofnode.c +++ b/test/dm/ofnode.c @@ -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);