diff options
| 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 /include/blk.h | |
| parent | fc69d472621b5c7513bcb8b4e1fe58ca8f5e035a (diff) | |
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 'include/blk.h')
| -rw-r--r-- | include/blk.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/blk.h b/include/blk.h index a128ee4841..4d60987f61 100644 --- a/include/blk.h +++ b/include/blk.h @@ -616,4 +616,11 @@ ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, */ int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart); +/** + * blk_get_from_parent() - obtain a block device by looking up its parent + * + * All devices with + */ +int blk_get_from_parent(struct udevice *parent, struct udevice **devp); + #endif |