Commit 4c727150 authored by Rob Herring (Arm)'s avatar Rob Herring (Arm)
Browse files

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

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: default avatarSaravana Kannan <saravanak@google.com>
Reviewed-by: default avatarNícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: default avatarRob Herring (Arm) <robh@kernel.org>
parent 000f6d58

scripts/dtc/dt-extract-compatibles

+13 −0
Original line number Diff line number Diff line
@@ -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