Add a script to extract all the supported acpi device ids from kernel sources.
The list of IDs returned by the script can be used as a reference to determine if a device declared in the ACPI namespace with certain _HID/_CID is supported by the kernel or not.
Signed-off-by: Laura Nao laura.nao@collabora.com --- MAINTAINERS | 1 + scripts/acpi/acpi-extract-ids | 60 +++++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100755 scripts/acpi/acpi-extract-ids
diff --git a/MAINTAINERS b/MAINTAINERS index 27751573e314..7540316d82f5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -294,6 +294,7 @@ F: drivers/pnp/pnpacpi/ F: include/acpi/ F: include/linux/acpi.h F: include/linux/fwnode.h +F: scripts/acpi/acpi-extract-ids F: tools/power/acpi/
ACPI APEI diff --git a/scripts/acpi/acpi-extract-ids b/scripts/acpi/acpi-extract-ids new file mode 100755 index 000000000000..12c8e09281dd --- /dev/null +++ b/scripts/acpi/acpi-extract-ids @@ -0,0 +1,60 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0-only +# +# Heavily inspired by the scripts/dtc/dt-extract-compatibles script, +# adapted for the ACPI use case. +# + +import os +import glob +import re +import argparse + + +def parse_acpi_device_ids(file): + """ Find all device ID strings in acpi_device_id struct """ + id_list = [] + + with open(file, 'r', encoding='utf-8') as f: + data = f.read().replace('\n', '') + + for m in re.finditer(r'acpi_device_id(\s+\S+)?\s+(\S+)[](\s+\S+)?\s*=\s*({.*?);', data): + id_list += re.findall(r'"(\S+)"', m[4]) + + return id_list + + +def print_acpi_device_ids(filename, id_list): + if not id_list: + return + if show_filename: + compat_str = ' '.join(id_list) + print(filename + ": ID(s): " + compat_str) + else: + print(*id_list, sep='\n') + + +def files_to_parse(path_args): + for f in path_args: + if os.path.isdir(f): + for filename in glob.iglob(f + "/**/*.c", recursive=True): + 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 device ids", action="store_true") + args = ap.parse_args() + + show_filename = args.with_filename + + for f in files_to_parse(args.cfile): + id_list = parse_acpi_device_ids(f) + print_acpi_device_ids(f, id_list)