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dm: core: support reading a single indexed u32 value

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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>
This commit is contained in:
Dario Binacchi
2020-03-29 18:04:41 +02:00
committed by Simon Glass
parent 70573c6c46
commit 4bb7075c83
8 changed files with 189 additions and 0 deletions
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29
test/dm/test-fdt.c
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@@ -905,6 +905,35 @@ static int dm_test_read_int(struct unit_test_state *uts)
}
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)
{