diff options
-rw-r--r-- | drivers/block/blk-uclass.c | 23 | ||||
-rw-r--r-- | include/blk.h | 9 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 9e0c823969..facf52711c 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -132,6 +132,29 @@ struct blk_desc *blk_get_devnum_by_typename(const char *if_typename, int devnum) } /** + * blk_get_by_device() - Get the block device descriptor for the given device + * @dev: Instance of a storage device + * + * Return: With block device descriptor on success , NULL if there is no such + * block device. + */ +struct blk_desc *blk_get_by_device(struct udevice *dev) +{ + struct udevice *child_dev, *next; + + device_foreach_child_safe(child_dev, next, dev) { + if (device_get_uclass_id(child_dev) != UCLASS_BLK) + continue; + + return dev_get_uclass_platdata(child_dev); + } + + debug("%s: No block device found\n", __func__); + + return NULL; +} + +/** * get_desc() - Get the block device descriptor for the given device number * * @if_type: Interface type diff --git a/include/blk.h b/include/blk.h index 86f6d5057f..6af219681c 100644 --- a/include/blk.h +++ b/include/blk.h @@ -406,6 +406,15 @@ int blk_select_hwpart(struct udevice *dev, int hwpart); */ int blk_get_from_parent(struct udevice *parent, struct udevice **devp); +/** + * blk_get_by_device() - Get the block device descriptor for the given device + * @dev: Instance of a storage device + * + * Return: With block device descriptor on success , NULL if there is no such + * block device. + */ +struct blk_desc *blk_get_by_device(struct udevice *dev); + #else #include <errno.h> /* |