dm: core: support reading a single indexed u32 value
The patch adds helper functions to allow reading a single indexed u32
value from a device-tree property containing multiple u32 values, that
is an array of integers.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index b39777f..7c9472a 100644
--- a/test/dm/test-fdt.c
+++ b/test/dm/test-fdt.c
@@ -905,6 +905,35 @@
}
DM_TEST(dm_test_read_int, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+static int dm_test_read_int_index(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+ u32 val32;
+
+ ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev));
+ ut_asserteq_str("a-test", dev->name);
+
+ ut_asserteq(-EINVAL, dev_read_u32_index(dev, "missing", 0, &val32));
+ ut_asserteq(19, dev_read_u32_index_default(dev, "missing", 0, 19));
+
+ ut_assertok(dev_read_u32_index(dev, "int-array", 0, &val32));
+ ut_asserteq(5678, val32);
+ ut_assertok(dev_read_u32_index(dev, "int-array", 1, &val32));
+ ut_asserteq(9123, val32);
+ ut_assertok(dev_read_u32_index(dev, "int-array", 2, &val32));
+ ut_asserteq(4567, val32);
+ ut_asserteq(-EOVERFLOW, dev_read_u32_index(dev, "int-array", 3,
+ &val32));
+
+ ut_asserteq(5678, dev_read_u32_index_default(dev, "int-array", 0, 2));
+ ut_asserteq(9123, dev_read_u32_index_default(dev, "int-array", 1, 2));
+ ut_asserteq(4567, dev_read_u32_index_default(dev, "int-array", 2, 2));
+ ut_asserteq(2, dev_read_u32_index_default(dev, "int-array", 3, 2));
+
+ return 0;
+}
+DM_TEST(dm_test_read_int_index, 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)
{