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dm: blk: Add a function to return the device type

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

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-04-24 23:31:03 -06:00 • committed by Tom Rini
parent 026e2136f8
commit 87571b7f20
2 changed files with 15 additions and 0 deletions
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7
drivers/block/blk-uclass.c
View file

@ -509,6 +509,13 @@ int blk_get_from_parent(struct udevice *parent, struct udevice **devp)
return 0; 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) int blk_find_max_devnum(enum if_type if_type)
{ {
struct udevice *dev; struct udevice *dev;

8
include/blk.h
View file

@ -433,6 +433,14 @@ int blk_select_hwpart(struct udevice *dev, int hwpart);
*/ */
int blk_get_from_parent(struct udevice *parent, struct udevice **devp); 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 * blk_get_by_device() - Get the block device descriptor for the given device
* @dev: Instance of a storage device * @dev: Instance of a storage device