From f4cdead24a1a0c39c29c04e107c2f98ba61c5da8 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 23 Jul 2014 06:55:14 -0600 Subject: dm: Allow a device to be found by its FDT offset Each device that was bound from a device tree has an node that caused it to be bound. Add functions that find and return a device based on a device tree offset. Signed-off-by: Simon Glass --- test/dm/test-fdt.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'test/dm') diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c index d8e94d8..7980a68 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -215,3 +215,33 @@ static int dm_test_fdt_uclass_seq(struct dm_test_state *dms) return 0; } DM_TEST(dm_test_fdt_uclass_seq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test that we can find a device by device tree offset */ +static int dm_test_fdt_offset(struct dm_test_state *dms) +{ + const void *blob = gd->fdt_blob; + struct udevice *dev; + int node; + + node = fdt_path_offset(blob, "/e-test"); + ut_assert(node > 0); + ut_assertok(uclass_get_device_by_of_offset(UCLASS_TEST_FDT, node, + &dev)); + ut_asserteq_str("e-test", dev->name); + + /* This node should not be bound */ + node = fdt_path_offset(blob, "/junk"); + ut_assert(node > 0); + ut_asserteq(-ENODEV, uclass_get_device_by_of_offset(UCLASS_TEST_FDT, + node, &dev)); + + /* This is not a top level node so should not be probed */ + node = fdt_path_offset(blob, "/some-bus/c-test"); + ut_assert(node > 0); + ut_asserteq(-ENODEV, uclass_get_device_by_of_offset(UCLASS_TEST_FDT, + node, &dev)); + + return 0; +} + +DM_TEST(dm_test_fdt_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); -- cgit v1.1