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dt: dt-extract-compatibles: Extract compatibles from function parameters

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Various DT and fwnode functions take a compatible string as a parameter.
These are often used in cases which don't have a driver, so they've been
missed.

The additional checks add about 400 more undocumented compatible
strings.

Link: https://lore.kernel.org/all/20240903200753.2097911-1-robh@kernel.org/
Acked-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
This commit is contained in:
Rob Herring (Arm) 2024-07-17 08:39:55 -06:00
parent 000f6d588a
commit 4c727150a6
1 changed files with 13 additions and 0 deletions
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13
scripts/dtc/dt-extract-compatibles
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@ -46,6 +46,15 @@ def parse_of_match_table(data):
return match_table_list
def parse_of_functions(data, func_name):
""" Find all compatibles in the last argument of a given function """
compat_list = []
for m in re.finditer(rf'{func_name}\(([a-zA-Z0-9_>\(\)"\-]+,\s)*"([a-zA-Z0-9_,-]+)"\)', data):
compat_list.append(m[2])
return compat_list
def parse_compatibles(file, compat_ignore_list):
with open(file, 'r', encoding='utf-8') as f:
data = f.read().replace('\n', '')
@ -60,6 +69,10 @@ def parse_compatibles(file, compat_ignore_list):
else:
compat_list = parse_of_declare_macros(data)
compat_list += parse_of_device_id(data)
compat_list += parse_of_functions(data, "_is_compatible")
compat_list += parse_of_functions(data, "of_find_compatible_node")
compat_list += parse_of_functions(data, "for_each_compatible_node")
compat_list += parse_of_functions(data, "of_get_compatible_child")
return compat_list