[U-Boot] [RFC PATCH 02/12] dm: core: Add functions to find parent and OF data

[Simon Glass]

Add dev_get_parent() as a convenience to obtain the parent of a device.

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

 drivers/core/device.c | 5 +++++
 include/dm/device.h   | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/core/device.c b/drivers/core/device.c
index 0d84776..76b29fd 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -549,6 +549,11 @@ int device_find_next_child(struct udevice **devp)
 	return 0;
 }
 
+struct udevice *dev_get_parent(struct udevice *child)
+{
+	return child->parent;
+}
+
 ulong dev_get_of_data(struct udevice *dev)
 {
 	return dev->of_id->data;
diff --git a/include/dm/device.h b/include/dm/device.h
index a712156..e8b7fcf 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -202,6 +202,14 @@ void *dev_get_parentdata(struct udevice *dev);
 void *dev_get_priv(struct udevice *dev);
 
 /**
+ * struct dev_get_parent() - Get the parent of a device
+ *
+ * @child:	Child to check
+ * @return parent of child, or NULL if this is the root device
+ */
+struct udevice *dev_get_parent(struct udevice *child);
+
+/**
  * dev_get_of_data() - get the device tree data used to bind a device
  *
  * When a device is bound using a device tree node, it matches a
-- 
2.1.0.rc2.206.gedb03e5