diff options
| author | Simon Glass <sjg@chromium.org> | 2014-10-13 23:41:49 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-10-22 10:36:45 -0600 |
| commit | a8981d4f80b010666ad754d20a4f389f94d6726d (patch) | |
| tree | 48bf392bb2e0f00248ac4949fdceefa4b7509cb6 /test/dm | |
| parent | 0b304a2494eed170562a9fdd64e31332ad5ae73a (diff) | |
dm: core: Add functions for iterating through device children
Buses need to iterate through their children in some situations. Add a few
functions to make this easy.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'test/dm')
| -rw-r--r-- | test/dm/bus.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/dm/bus.c b/test/dm/bus.c index 873d64e42a..abbaccff50 100644 --- a/test/dm/bus.c +++ b/test/dm/bus.c @@ -140,6 +140,37 @@ static int dm_test_bus_children_funcs(struct dm_test_state *dms) } DM_TEST(dm_test_bus_children_funcs, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); +/* Test that we can iterate through children */ +static int dm_test_bus_children_iterators(struct dm_test_state *dms) +{ + struct udevice *bus, *dev, *child; + + /* Walk through the children one by one */ + ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus)); + ut_assertok(device_find_first_child(bus, &dev)); + ut_asserteq_str("c-test@5", dev->name); + ut_assertok(device_find_next_child(&dev)); + ut_asserteq_str("c-test@0", dev->name); + ut_assertok(device_find_next_child(&dev)); + ut_asserteq_str("c-test@1", dev->name); + ut_assertok(device_find_next_child(&dev)); + ut_asserteq_ptr(dev, NULL); + + /* Move to the next child without using device_find_first_child() */ + ut_assertok(device_find_child_by_seq(bus, 5, true, &dev)); + ut_asserteq_str("c-test@5", dev->name); + ut_assertok(device_find_next_child(&dev)); + ut_asserteq_str("c-test@0", dev->name); + + /* Try a device with no children */ + ut_assertok(device_find_first_child(dev, &child)); + ut_asserteq_ptr(child, NULL); + + return 0; +} +DM_TEST(dm_test_bus_children_iterators, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + /* Test that the bus can store data about each child */ static int dm_test_bus_parent_data(struct dm_test_state *dms) { |