[PATCH v4 10/33] dm: blk: Add a function to return the device type

Simon Glass
2022-03-06T13:00:41Z

Use the uclass name to get the device type for a block device.

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

Changes in v4:
- Use new sphynx Return style

drivers/block/blk-uclass.c | 7 +++++++
include/blk.h | 8 ++++++++
2 files changed, 15 insertions(+)

diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index bee1cd6f0d..75b6664983 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -509,6 +509,13 @@ int blk_get_from_parent(struct udevice *parent, struct udevice **devp)
return 0;
}

+const char *blk_get_devtype(struct udevice *dev)
+{
+ struct udevice *parent = dev_get_parent(dev);
+
+ return uclass_get_name(device_get_uclass_id(parent));
+};
+
int blk_find_max_devnum(enum if_type if_type)
{
struct udevice *dev;
diff --git a/include/blk.h b/include/blk.h
index d06098bc13..a4a13bdf1b 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -433,6 +433,14 @@ int blk_select_hwpart(struct udevice *dev, int hwpart);
*/
int blk_get_from_parent(struct udevice *parent, struct udevice **devp);

+/**
+ * blk_get_devtype() - Get the device type of a block device
+ *
+ * @dev: Block device to check
+ * Return: device tree, i.e. the uclass name of its parent, e.g. "mmc"
+ */
+const char *blk_get_devtype(struct udevice *dev);
+
/**
* blk_get_by_device() - Get the block device descriptor for the given device
* @dev: Instance of a storage device
--
2.35.1.616.g0bdcbb4464-goog