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91 lines
3 KiB
Nix
91 lines
3 KiB
Nix
{pkgs, ...}: {
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systemd.services.fanSetup = let
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# https://github.com/arcnmx/home/blob/9eb1cd4dd43883e1a0c6a2a55c00d7c3bede1776/hw/x370gpc/default.nix#L80 <3
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nct = "/sys/devices/platform/nct6775.656/hwmon/hwmon*/";
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# https://www.kernel.org/doc/html/next/hwmon/nct6775.html
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#nct = ".//.//.sys.devices.platform.nct6775/656.hwmon.hwmon0";
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# take in celcius, turn it into millicelcius
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tempIn = x: toString (x * 1000);
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# take in a percentage, turn it into a number between 0 and 255
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pwmIn = x: toString (x * 255 / 100);
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pwmEnable = {
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maximum = 0;
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manual = 1;
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thermalCruise = 2;
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speedCruise = 3;
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# smart_fan_3 = 4;
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smart_fan = 5;
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};
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cpu_sensor = 2;
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mobo_sensor = 3;
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cpu_temp = "temp${toString cpu_sensor}";
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mobo_temp = "temp${toString mobo_sensor}";
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exhaust = "pwm1";
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intake = "pwm3";
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temps = {
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cpu = {
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max = 80;
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max_hyst = 75;
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};
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mobo = {
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max = 50;
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max_hyst = 45;
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};
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};
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fanScript = pkgs.writeShellScriptBin "fan" ''
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cd ${nct}
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echo "${toString temps.cpu.max}" > ${cpu_temp}_max
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echo "${toString temps.cpu.max_hyst}" > ${cpu_temp}_max_hyst
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echo "${toString temps.mobo.max}" > ${mobo_temp}_max
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echo "${toString temps.mobo.max_hyst}" > ${mobo_temp}_max_hyst
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# Rear and Top Exhaust
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echo "${toString pwmEnable.smart_fan}" > ${exhaust}_enable
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echo "${toString mobo_sensor}" > ${exhaust}_temp_sel
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echo "${tempIn 35}" > ${exhaust}_auto_point1_temp
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echo "${pwmIn 10}" > ${exhaust}_auto_point1_pwm
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echo "${tempIn 40}" > ${exhaust}_auto_point2_temp
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echo "${pwmIn 20}" > ${exhaust}_auto_point2_pwm
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echo "${tempIn 45}" > ${exhaust}_auto_point3_temp
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echo "${pwmIn 50}" > ${exhaust}_auto_point3_pwm
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echo "${tempIn 50}" > ${exhaust}_auto_point4_temp
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echo "${pwmIn 75}" > ${exhaust}_auto_point4_pwm
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echo "${tempIn 55}" > ${exhaust}_auto_point5_temp
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echo "${pwmIn 100}" > ${exhaust}_auto_point5_pwm
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# Bottom Intake
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echo "${toString pwmEnable.smart_fan}" > ${intake}_enable
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echo "${toString mobo_sensor}" > ${intake}_temp_sel
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echo "${tempIn 35}" > ${intake}_auto_point1_temp
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echo "${pwmIn 10}" > ${intake}_auto_point1_pwm
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echo "${tempIn 40}" > ${intake}_auto_point2_temp
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echo "${pwmIn 20}" > ${intake}_auto_point2_pwm
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echo "${tempIn 45}" > ${intake}_auto_point3_temp
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echo "${pwmIn 50}" > ${intake}_auto_point3_pwm
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echo "${tempIn 50}" > ${intake}_auto_point4_temp
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echo "${pwmIn 75}" > ${intake}_auto_point4_pwm
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echo "${tempIn 55}" > ${intake}_auto_point5_temp
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echo "${pwmIn 100}" > ${intake}_auto_point5_pwm
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# CLC
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${pkgs.liquidctl}/bin/liquidctl --match clc set fan speed 20 0 30 0 40 10 50 50 60 75 70 100
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'';
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in {
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wantedBy = ["multi-user.target"];
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description = "Set up the fan speeds for the system";
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after = ["systemd-modules-load.service"];
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serviceConfig = {
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Type = "oneshot";
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ExecStart = "${fanScript}/bin/fan";
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};
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};
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}
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