dm: core: Split out the declaration of ofnode

[platform/kernel/u-boot.git] / include / dm / ofnode.h

diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index bb60433..346b09c 100644 (file)
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -19,41 +19,7 @@
 
 struct resource;
 
-/**
- * typedef union ofnode_union ofnode - reference to a device tree node
- *
- * This union can hold either a straightforward pointer to a struct device_node
- * in the live device tree, or an offset within the flat device tree. In the
- * latter case, the pointer value is just the integer offset within the flat DT.
- *
- * Thus we can reference nodes in both the live tree (once available) and the
- * flat tree (until then). Functions are available to translate between an
- * ofnode and either an offset or a `struct device_node *`.
- *
- * The reference can also hold a null offset, in which case the pointer value
- * here is NULL. This corresponds to a struct device_node * value of
- * NULL, or an offset of -1.
- *
- * There is no ambiguity as to whether ofnode holds an offset or a node
- * pointer: when the live tree is active it holds a node pointer, otherwise it
- * holds an offset. The value itself does not need to be unique and in theory
- * the same value could point to a valid device node or a valid offset. We
- * could arrange for a unique value to be used (e.g. by making the pointer
- * point to an offset within the flat device tree in the case of an offset) but
- * this increases code size slightly due to the subtraction. Since it offers no
- * real benefit, the approach described here seems best.
- *
- * For now these points use constant types, since we don't allow writing
- * the DT.
- *
- * @np: Pointer to device node, used for live tree
- * @of_offset: Pointer into flat device tree, used for flat tree. Note that this
- *     is not a really a pointer to a node: it is an offset value. See above.
- */
-typedef union ofnode_union {
-       const struct device_node *np;
-       long of_offset;
-} ofnode;
+#include <dm/ofnode_decl.h>
 
 struct ofnode_phandle_args {
        ofnode node;
@@ -62,31 +28,6 @@ struct ofnode_phandle_args {
 };
 
 /**
- * struct ofprop - reference to a property of a device tree node
- *
- * This struct hold the reference on one property of one node,
- * using struct ofnode and an offset within the flat device tree or either
- * a pointer to a struct property in the live device tree.
- *
- * Thus we can reference arguments in both the live tree and the flat tree.
- *
- * The property reference can also hold a null reference. This corresponds to
- * a struct property NULL pointer or an offset of -1.
- *
- * @node: Pointer to device node
- * @offset: Pointer into flat device tree, used for flat tree.
- * @prop: Pointer to property, used for live treee.
- */
-
-struct ofprop {
-       ofnode node;
-       union {
-               int offset;
-               const struct property *prop;
-       };
-};
-
-/**
  * ofnode_to_np() - convert an ofnode to a live DT node pointer
  *
  * This cannot be called if the reference contains an offset.