dm: core: Add device children and sibling functions

[karo-tx-uboot.git] / include / dm / device.h

diff --git a/include/dm/device.h b/include/dm/device.h
index ec22885b34ffabdf7663851ed130cd7764afac11..c11342c33b288f2a2033a9f2178caa26306122fc 100644 (file)
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -380,4 +380,34 @@ int device_find_next_child(struct udevice **devp);
  */
 fdt_addr_t dev_get_addr(struct udevice *dev);
 
+/**
+ * device_has_children() - check if a device has any children
+ *
+ * @dev:       Device to check
+ * @return true if the device has one or more children
+ */
+bool device_has_children(struct udevice *dev);
+
+/**
+ * device_has_active_children() - check if a device has any active children
+ *
+ * @dev:       Device to check
+ * @return true if the device has one or more children and at least one of
+ * them is active (probed).
+ */
+bool device_has_active_children(struct udevice *dev);
+
+/**
+ * device_is_last_sibling() - check if a device is the last sibling
+ *
+ * This function can be useful for display purposes, when special action needs
+ * to be taken when displaying the last sibling. This can happen when a tree
+ * view of devices is being displayed.
+ *
+ * @dev:       Device to check
+ * @return true if there are no more siblings after this one - i.e. is it
+ * last in the list.
+ */
+bool device_is_last_sibling(struct udevice *dev);
+
 #endif