dm: blk: Add a function to find an interface-type name

Add a function to find the name of an interface type (e.g. "sata", "scsi")
from the interface type enum.

This is useful for generic code (not specific to SATA or SCSI, for
example) that wants to display the type of interface it is dealing with.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index a3737badec..3adb92b58e 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -57,6 +57,11 @@ static enum uclass_id if_type_to_uclass_id(enum if_type if_type)
 	return if_type_uclass_id[if_type];
 }
 
+const char *blk_get_if_type_name(enum if_type if_type)
+{
+	return if_typename_str[if_type];
+}
+
 struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum)
 {
 	struct blk_desc *desc;
diff --git a/drivers/block/blk_legacy.c b/drivers/block/blk_legacy.c
index 7b90a8a6e1..981872ecb3 100644
--- a/drivers/block/blk_legacy.c
+++ b/drivers/block/blk_legacy.c
@@ -38,6 +38,13 @@ static struct blk_driver *blk_driver_lookup_typename(const char *if_typename)
 	return NULL;
 }
 
+const char *blk_get_if_type_name(enum if_type if_type)
+{
+	struct blk_driver *drv = blk_driver_lookup_type(if_type);
+
+	return drv ? drv->if_typename : NULL;
+}
+
 /**
  * get_desc() - Get the block device descriptor for the given device number
  *