dm: blk: Add functions to select a hardware partition
The block device uclass does not currently support selecting a particular
hardware partition but this is needed for MMC. Add it so that the blk API
can support MMC properly.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index a37239e..6ba1026 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -165,6 +165,18 @@
return found_more ? -ENOENT : -ENODEV;
}
+int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = blk_get_device(if_type, devnum, &dev);
+ if (ret)
+ return ret;
+
+ return blk_select_hwpart(dev, hwpart);
+}
+
int blk_list_part(enum if_type if_type)
{
struct blk_desc *desc;
@@ -291,6 +303,23 @@
return blk_dwrite(desc, start, blkcnt, buffer);
}
+int blk_select_hwpart(struct udevice *dev, int hwpart)
+{
+ const struct blk_ops *ops = blk_get_ops(dev);
+
+ if (!ops)
+ return -ENOSYS;
+ if (!ops->select_hwpart)
+ return 0;
+
+ return ops->select_hwpart(dev, hwpart);
+}
+
+int blk_dselect_hwpart(struct blk_desc *desc, int hwpart)
+{
+ return blk_select_hwpart(desc->bdev, hwpart);
+}
+
int blk_first_device(int if_type, struct udevice **devp)
{
struct blk_desc *desc;