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authorSimon Glass <sjg@chromium.org>2014-07-23 06:55:14 -0600
committerSimon Glass <sjg@chromium.org>2014-07-23 14:07:25 +0100
commitf4cdead24a1a0c39c29c04e107c2f98ba61c5da8 (patch)
treecbabf26d3f1df2d80529543f5a4bcfeeef4a34f3 /include/dm
parentb7d665705ebb29f06616b7f365ab8732e9779bf6 (diff)
dm: Allow a device to be found by its FDT offset
Each device that was bound from a device tree has an node that caused it to be bound. Add functions that find and return a device based on a device tree offset. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
-rw-r--r--include/dm/uclass.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dm/uclass.h b/include/dm/uclass.h
index 48ae2420df4..0b5ade6d68c 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -122,6 +122,22 @@ int uclass_get_device(enum uclass_id id, int index, struct udevice **devp);
int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp);
/**
+ * uclass_get_device_by_of_offset() - Get a uclass device by device tree node
+ *
+ * This searches the devices in the uclass for one attached to the given
+ * device tree node.
+ *
+ * The device is probed to activate it ready for use.
+ *
+ * @id: ID to look up
+ * @node: Device tree offset to search for (if -ve then -ENODEV is returned)
+ * @devp: Returns pointer to device (there is only one for each node)
+ * @return 0 if OK, -ve on error
+ */
+int uclass_get_device_by_of_offset(enum uclass_id id, int node,
+ struct udevice **devp);
+
+/**
* uclass_first_device() - Get the first device in a uclass
*
* @id: Uclass ID to look up