1#!/usr/bin/env python3
 2# SPDX-License-Identifier: GPL-2.0-only
 3
 4import os
 5import glob
 6import re
 7import argparse
 8
 9
10def parse_of_declare_macros(data):
11	""" Find all compatible strings in OF_DECLARE() style macros """
12	compat_list = []
13	# CPU_METHOD_OF_DECLARE does not have a compatible string
14	for m in re.finditer(r'(?<!CPU_METHOD_)(IRQCHIP|OF)_(DECLARE|MATCH)(_DRIVER)?\(.*?\)', data):
15		try:
16			compat = re.search(r'"(.*?)"', m[0])[1]
17		except:
18			# Fails on compatible strings in #define, so just skip
19			continue
20		compat_list += [compat]
21
22	return compat_list
23
24
25def parse_of_device_id(data):
26	""" Find all compatible strings in of_device_id structs """
27	compat_list = []
28	for m in re.finditer(r'of_device_id\s+[a-zA-Z0-9_]+\[\]\s*=\s*({.*?);', data):
29		compat_list += re.findall(r'\.compatible\s+=\s+"([a-zA-Z0-9_\-,]+)"', m[1])
30
31	return compat_list
32
33
34def parse_compatibles(file):
35	with open(file, 'r', encoding='utf-8') as f:
36		data = f.read().replace('\n', '')
37
38	compat_list = parse_of_declare_macros(data)
39	compat_list += parse_of_device_id(data)
40
41	return compat_list
42
43def print_compat(filename, compatibles):
44	if not compatibles:
45		return
46	if show_filename:
47		compat_str = ' '.join(compatibles)
48		print(filename + ": compatible(s): " + compat_str)
49	else:
50		print(*compatibles, sep='\n')
51
52show_filename = False
53
54if __name__ == "__main__":
55	ap = argparse.ArgumentParser()
56	ap.add_argument("cfile", type=str, nargs='*', help="C source files or directories to parse")
57	ap.add_argument('-H', '--with-filename', help="Print filename with compatibles", action="store_true")
58	args = ap.parse_args()
59
60	show_filename = args.with_filename
61
62	for f in args.cfile:
63		if os.path.isdir(f):
64			for filename in glob.iglob(f + "/**/*.c", recursive=True):
65				compat_list = parse_compatibles(filename)
66				print_compat(filename, compat_list)
67		else:
68			compat_list = parse_compatibles(f)
69			print_compat(f, compat_list)