diff options
| author | Simon Glass <sjg@chromium.org> | 2020-02-06 09:54:50 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-02-07 22:41:24 +0800 |
| commit | 50162348f0d3b915004733131acd81805e202c76 (patch) | |
| tree | 56db3ef185e028253871f7f0ecd7d3c7a80e366a /test/dm | |
| parent | 3cf0fba4ff862d833545f82fb2209ff3c79d17b5 (diff) | |
dm: core: Add a function to find a device by drvdata
It is sometimes useful to find a device in a uclass using only its driver
data. The driver data often indicates the 'subtype' of the device, e,g,
via its compatible string.
Add a function to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'test/dm')
| -rw-r--r-- | test/dm/test-fdt.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c index 8ea536c309..698ca0e7cf 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -893,3 +893,24 @@ static int dm_test_read_int(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_read_int, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test iteration through devices by drvdata */ +static int dm_test_uclass_drvdata(struct unit_test_state *uts) +{ + struct udevice *dev; + + ut_assertok(uclass_first_device_drvdata(UCLASS_TEST_FDT, + DM_TEST_TYPE_FIRST, &dev)); + ut_asserteq_str("a-test", dev->name); + + ut_assertok(uclass_first_device_drvdata(UCLASS_TEST_FDT, + DM_TEST_TYPE_SECOND, &dev)); + ut_asserteq_str("d-test", dev->name); + + ut_asserteq(-ENODEV, uclass_first_device_drvdata(UCLASS_TEST_FDT, + DM_TEST_TYPE_COUNT, + &dev)); + + return 0; +} +DM_TEST(dm_test_uclass_drvdata, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |