import fnmatch
import os
import re
import argparse
def parse_of_declare_macros(data, include_driver_macros=True): """ Find all compatible strings in OF_DECLARE() style macros """
compat_list = [] # CPU_METHOD_OF_DECLARE does not have a compatible string if include_driver_macros:
re_macros = r'(?<!CPU_METHOD_)(IRQCHIP|OF)_(DECLARE|MATCH)(_DRIVER)?\(.*?\)' else:
re_macros = r'(?<!CPU_METHOD_)(IRQCHIP|OF)_(DECLARE|MATCH)\(.*?\)' for m in re.finditer(re_macros, data): try:
compat = re.search(r'"(.*?)"', m[0])[1]
except: # Fails on compatible strings in #define, so just skip continue
compat_list += [compat]
return compat_list
def parse_of_device_id(data, match_table_list=None): """ Find all compatible strings in of_device_id structs """
compat_list = [] for m in re.finditer(r'of_device_id(\s+\S+)?\s+(\S+)\[\](\s+\S+)?\s*=\s*({.*?);', data): if match_table_list is not None and m[2] not in match_table_list: continue
compat_list += re.findall(r'\.compatible\s+=\s+"(\S+)"', m[4])
return compat_list
def parse_of_match_table(data): """ Find all driver's of_match_table """
match_table_list = [] for m in re.finditer(r'\.of_match_table\s+=\s+(of_match_ptr\()?([a-zA-Z0-9_-]+)', data):
match_table_list.append(m[2])
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', '')
if compat_ignore_list is not None: # For a compatible in the DT to be matched to a driver it needs to show # up in a driver's of_match_table
match_table_list = parse_of_match_table(data)
compat_list = parse_of_device_id(data, match_table_list)
compat_list = [compat for compat in compat_list if compat not in 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
def parse_compatibles_to_ignore(file):
with open(file, 'r', encoding='utf-8') as f:
data = f.read().replace('\n', '')
# Compatibles that show up in OF_DECLARE macros can't be expected to # match a driver, except for the _DRIVER ones. return parse_of_declare_macros(data, include_driver_macros=False)
def glob_without_symlinks(root, glob): for path, dirs, files in os.walk(root): # Ignore hidden directories for d in dirs: if fnmatch.fnmatch(d, ".*"):
dirs.remove(d) for f in files: if fnmatch.fnmatch(f, glob):
yield os.path.join(path, f)
def files_to_parse(path_args): for f in path_args: if os.path.isdir(f): for filename in glob_without_symlinks(f, "*.c"):
yield filename else:
yield f
show_filename = False
if __name__ == "__main__":
ap = argparse.ArgumentParser()
ap.add_argument("cfile", type=str, nargs='*', help="C source files or directories to parse")
ap.add_argument('-H', '--with-filename', help="Print filename with compatibles", action="store_true")
ap.add_argument('-d', '--driver-match', help="Only print compatibles that should match to a driver", action="store_true")
args = ap.parse_args()
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