gen_defines: add helpers for iterating over the entire tree
Add two helper macros:
- DT_FOREACH_HELPER
- DT_FOREACH_OKAY_HELPER
These are internal generated macros which will be used to define
devicetree.h APIs for iterating over every node in the tree, and every
node in the tree with status "okay", respectively.
We can use these new APIs to implement the functionality in
device_extern.h natively from device.h without requiring a generated
header. It will also be useful for other purposes later on.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
diff --git a/scripts/dts/gen_defines.py b/scripts/dts/gen_defines.py
index 68fc100..7c8db72 100755
--- a/scripts/dts/gen_defines.py
+++ b/scripts/dts/gen_defines.py
@@ -858,6 +858,14 @@
# Global or tree-wide information, such as number of instances
# with status "okay" for each compatible, is printed here.
+
+ out_comment("Macros for iterating over all nodes and enabled nodes")
+ out_dt_define("FOREACH_HELPER(fn)",
+ " ".join(f"fn(DT_{node.z_path_id})" for node in edt.nodes))
+ out_dt_define("FOREACH_OKAY_HELPER(fn)",
+ " ".join(f"fn(DT_{node.z_path_id})" for node in edt.nodes
+ if node.status == "okay"))
+
n_okay_macros = {}
for_each_macros = {}
compat2buses = defaultdict(list) # just for "okay" nodes
