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authorSimon Glass <sjg@chromium.org>2020-02-06 09:54:50 -0700
committerBin Meng <bmeng.cn@gmail.com>2020-02-07 22:41:24 +0800
commit50162348f0d3b915004733131acd81805e202c76 (patch)
tree56db3ef185e028253871f7f0ecd7d3c7a80e366a /test
parent3cf0fba4ff862d833545f82fb2209ff3c79d17b5 (diff)
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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')
-rw-r--r--test/dm/test-fdt.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index 8ea536c..698ca0e 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);