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#!/usr/bin/env python
import argparse
import datetime
import json
import os
import pathlib
import sys
import typing
class ThinkfanConfig(typing.TypedDict):
sensors: list[dict[str, str]]
fans: list[dict[str, str]]
levels: list[dict[str, int | list[int]]]
def main(sysargs=sys.argv[:]) -> int:
parser = argparse.ArgumentParser()
parser.add_argument(
"-l",
"--lower-bound",
default=int(os.environ.get("THINKFAN_LOWER_BOUND", "30")),
type=int,
help="lower bound of sensor value for min fan speed (THINKFAN_LOWER_BOUND)",
)
parser.add_argument(
"-u",
"--upper-bound",
default=int(os.environ.get("THINKFAN_UPPER_BOUND", "32767")),
type=int,
help="upper bound of sensor value for max fan speed (THINKFAN_UPPER_BOUND)",
)
parser.add_argument(
"-s",
"--step",
default=int(os.environ.get("THINKFAN_STEP", "4")),
type=int,
help="step size between fan speed levels (THINKFAN_STEP)",
)
args = parser.parse_args(sysargs[1:])
cfg: ThinkfanConfig = {
"sensors": [],
"fans": [],
"levels": [],
}
acpi_fan = pathlib.Path("/proc/acpi/ibm/fan")
if acpi_fan.exists():
cfg["fans"].append({"tpacpi": str(acpi_fan)})
acpi_thermal = pathlib.Path("/proc/acpi/ibm/thermal")
n_sensors: int = 0
if acpi_thermal.exists():
cfg["sensors"].append({"tpacpi": str(acpi_thermal)})
n_sensors = len(
[
l
for l in acpi_thermal.read_text().splitlines()
if l.startswith("temperatures:")
][0]
.split(":")[1]
.strip()
.split()
)
else:
for dirpath, dirnames, filenames in pathlib.Path("/sys/devices").walk(
on_error=print, follow_symlinks=False
):
if "thinkpad_hwmon" in dirnames:
dirnames.remove("thinkpad_hwmon")
for filename in filenames:
if filename.startswith("temp") and filename.endswith("_input"):
cfg["sensors"].append({"hwmon": str(dirpath.joinpath(filename))})
n_sensors += 1
cur: int = args.lower_bound
step: int = args.step
halfstep = step // 2
for level in range(8):
if level == 0:
cfg["levels"].append(
{
"speed": 0,
"lower_limit": [0] * n_sensors,
"upper_limit": [cur] * n_sensors,
}
)
continue
if level == 7:
cfg["levels"].append(
{
"speed": 7,
"upper_limit": [args.upper_bound] * n_sensors,
"lower_limit": [cur - halfstep] * n_sensors,
}
)
continue
cfg["levels"].append(
{
"speed": level,
"lower_limit": [cur - halfstep] * n_sensors,
"upper_limit": [cur + step] * n_sensors,
},
)
cur += step
print(f"# thinkfan_confgen.py created {datetime.datetime.now(datetime.UTC)}")
print(json.dumps(cfg))
return 0
if __name__ == "__main__":
sys.exit(main())