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dts: gen_defines: emit more for-each helpers

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Add some helper macros that work similarly to the
'DT_FOREACH_OKAY_INST_<compat>(fn)' macros, except they give 'fn'
node identifiers in their expansion instead of instance numbers.

This makes it possible to add for-each APIs to devicetree.h that work
on an arbitrary compatible, not just DT_DRV_COMPAT.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This commit is contained in:
Martí Bolívar 2021-08-05 15:24:50 -07:00 committed by Kumar Gala
parent 1c4aa60229
commit e7d42ff879
1 changed files with 15 additions and 1 deletions
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16
scripts/dts/gen_defines.py
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@ -771,10 +771,24 @@ def write_global_compat_info(edt):
ident = str2ident(compat)
n_okay_macros[f"DT_N_INST_{ident}_NUM_OKAY"] = len(okay_nodes)
# Helpers for non-INST for-each macros that take node
# identifiers as arguments.
for_each_macros[f"DT_FOREACH_OKAY_{ident}(fn)"] = \
" ".join(f"fn(DT_{node.z_path_id})"
for node in okay_nodes)
for_each_macros[f"DT_FOREACH_OKAY_VARGS_{ident}(fn, ...)"] = \
" ".join(f"fn(DT_{node.z_path_id}, __VA_ARGS__)"
for node in okay_nodes)
# Helpers for INST versions of for-each macros, which take
# instance numbers. We emit separate helpers for these because
# avoiding an intermediate node_id --> instance number
# conversion in the preprocessor helps to keep the macro
# expansions simpler. That hopefully eases debugging.
for_each_macros[f"DT_FOREACH_OKAY_INST_{ident}(fn)"] = \
" ".join(f"fn({edt.compat2nodes[compat].index(node)})"
for node in okay_nodes)
for_each_macros[f"DT_FOREACH_OKAY_INST_VARGS_{ident}(fn, ...)"] = \
" ".join(f"fn({edt.compat2nodes[compat].index(node)}, __VA_ARGS__)"
for node in okay_nodes)