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| author | Simon Glass <sjg@chromium.org> | 2017-05-27 11:37:17 -0600 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2017-06-09 20:25:16 +0900 |
| commit | 9f103b9cb5f8de4f196b5ef8f6ddb4749cd732ba (patch) | |
| tree | a4f8dd89d5ec45049c7bc0c389ce59835e1bcb23 /test/dm/blk.c | |
| parent | fc69d472621b5c7513bcb8b4e1fe58ca8f5e035a (diff) | |
| download | u-boot-9f103b9cb5f8de4f196b5ef8f6ddb4749cd732ba.tar.gz u-boot-9f103b9cb5f8de4f196b5ef8f6ddb4749cd732ba.tar.bz2 u-boot-9f103b9cb5f8de4f196b5ef8f6ddb4749cd732ba.zip | |
dm: blk: Add a way to obtain a block device from its parent
Many devices support a child block device (e.g. MMC, USB). Add a
convenient way to get this device given the parent device.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'test/dm/blk.c')
| -rw-r--r-- | test/dm/blk.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/dm/blk.c b/test/dm/blk.c index 5c5eb829a0..923e8d95f0 100644 --- a/test/dm/blk.c +++ b/test/dm/blk.c @@ -150,3 +150,21 @@ static int dm_test_blk_devnum(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_blk_devnum, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test that we can get a block from its parent */ +static int dm_test_blk_get_from_parent(struct unit_test_state *uts) +{ + struct udevice *dev, *blk; + + ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev)); + ut_assertok(blk_get_from_parent(dev, &blk)); + + ut_assertok(uclass_get_device(UCLASS_I2C, 0, &dev)); + ut_asserteq(-ENOTBLK, blk_get_from_parent(dev, &blk)); + + ut_assertok(uclass_get_device(UCLASS_GPIO, 0, &dev)); + ut_asserteq(-ENODEV, blk_get_from_parent(dev, &blk)); + + return 0; +} +DM_TEST(dm_test_blk_get_from_parent, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |