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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.hardware.fancontrol;
configFile = pkgs.writeText "fancontrol.conf" cfg.config;
in
{
options.hardware.fancontrol = {
enable = mkEnableOption "software fan control (requires fancontrol.config)";
config = mkOption {
type = types.lines;
description = "Required fancontrol configuration file content. See {manpage}`pwmconfig(8)` from the lm_sensors package.";
example = ''
# Configuration file generated by pwmconfig
INTERVAL=10
DEVPATH=hwmon3=devices/virtual/thermal/thermal_zone2 hwmon4=devices/platform/f71882fg.656
DEVNAME=hwmon3=soc_dts1 hwmon4=f71869a
FCTEMPS=hwmon4/device/pwm1=hwmon3/temp1_input
FCFANS=hwmon4/device/pwm1=hwmon4/device/fan1_input
MINTEMP=hwmon4/device/pwm1=35
MAXTEMP=hwmon4/device/pwm1=65
MINSTART=hwmon4/device/pwm1=150
MINSTOP=hwmon4/device/pwm1=0
'';
};
};
config = mkIf cfg.enable {
systemd.services.fancontrol = {
documentation = [ "man:fancontrol(8)" ];
description = "software fan control";
wantedBy = [ "multi-user.target" ];
after = [ "lm_sensors.service" ];
serviceConfig = {
Restart = "on-failure";
ExecStart = "${pkgs.lm_sensors}/sbin/fancontrol ${configFile}";
};
};
# On some systems, the fancontrol service does not resume properly after sleep because the pwm status of the fans
# is not reset properly. Restarting the service fixes this, in accordance with https://github.com/lm-sensors/lm-sensors/issues/172.
powerManagement.resumeCommands = ''
systemctl restart fancontrol.service
'';
};
meta.maintainers = [ maintainers.evils ];
}
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