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scripts: dts: Add generation of *_PARENT_LABEL macros #13905

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scripts: dts: Add generation of *_PARENT_LABEL macros #13905

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20 changes: 13 additions & 7 deletions scripts/dts/extract_dts_includes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,17 +29,17 @@
from extract.default import default


def extract_bus_name(node_path, def_label):
label = def_label + '_BUS_NAME'
def extract_parent_label(node_path, def_label, def_label_postfix):
label = def_label + '_' + def_label_postfix
prop_alias = {}

add_compat_alias(node_path, 'BUS_NAME', label, prop_alias)
add_compat_alias(node_path, def_label_postfix, label, prop_alias)

# Generate defines for node aliases
if node_path in aliases:
add_prop_aliases(
node_path,
lambda alias: str_to_label(alias) + '_BUS_NAME',
lambda alias: str_to_label(alias) + '_' + def_label_postfix,
label,
prop_alias)

Expand All @@ -61,16 +61,21 @@ def generate_prop_defines(node_path, prop):
# Generates #defines (and .conf file values) from the prop
# named 'prop' on the device tree node at 'node_path'

parent_path = get_parent_path(node_path)
binding = get_binding(node_path)
if 'parent' in binding and 'bus' in binding['parent']:
# If the binding specifies a parent for the node, then include the
# parent in the #define's generated for the properties
parent_path = get_parent_path(node_path)
def_label = 'DT_' + node_label(parent_path) + '_' \
+ node_label(node_path)
else:
def_label = 'DT_' + node_label(node_path)

if prop == 'label' and 'label' in reduced[parent_path]['props']:
# If both the node and its parent have the 'label' property,
# generate *_PARENT_LABEL #define
extract_parent_label(node_path, def_label, 'PARENT_LABEL')

names = prop_names(reduced[node_path], prop)

if prop == 'reg':
Expand Down Expand Up @@ -172,9 +177,10 @@ def generate_bus_defines(node_path):
aliases[node_path].append(node_alias)

# Generate *_BUS_NAME #define
extract_bus_name(
extract_parent_label(
node_path,
'DT_' + node_label(parent_path) + '_' + node_label(node_path))
'DT_' + node_label(parent_path) + '_' + node_label(node_path),
'BUS_NAME')


def prop_names(node, prop_name):
Expand Down