diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/hardware/thinkfan.nix')
| -rw-r--r-- | nixpkgs/nixos/modules/services/hardware/thinkfan.nix | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/hardware/thinkfan.nix b/nixpkgs/nixos/modules/services/hardware/thinkfan.nix new file mode 100644 index 000000000000..7c105e99ca54 --- /dev/null +++ b/nixpkgs/nixos/modules/services/hardware/thinkfan.nix @@ -0,0 +1,152 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfg = config.services.thinkfan; + configFile = pkgs.writeText "thinkfan.conf" '' + # ATTENTION: There is only very basic sanity checking on the configuration. + # That means you can set your temperature limits as insane as you like. You + # can do anything stupid, e.g. turn off your fan when your CPU reaches 70°C. + # + # That's why this program is called THINKfan: You gotta think for yourself. + # + ###################################################################### + # + # IBM/Lenovo Thinkpads (thinkpad_acpi, /proc/acpi/ibm) + # ==================================================== + # + # IMPORTANT: + # + # To keep your HD from overheating, you have to specify a correction value for + # the sensor that has the HD's temperature. You need to do this because + # thinkfan uses only the highest temperature it can find in the system, and + # that'll most likely never be your HD, as most HDs are already out of spec + # when they reach 55 °C. + # Correction values are applied from left to right in the same order as the + # temperatures are read from the file. + # + # For example: + # tp_thermal /proc/acpi/ibm/thermal (0, 0, 10) + # will add a fixed value of 10 °C the 3rd value read from that file. Check out + # http://www.thinkwiki.org/wiki/Thermal_Sensors to find out how much you may + # want to add to certain temperatures. + + ${cfg.fan} + ${cfg.sensors} + + # Syntax: + # (LEVEL, LOW, HIGH) + # LEVEL is the fan level to use (0-7 with thinkpad_acpi) + # LOW is the temperature at which to step down to the previous level + # HIGH is the temperature at which to step up to the next level + # All numbers are integers. + # + + ${cfg.levels} + ''; + + thinkfan = pkgs.thinkfan.override { smartSupport = cfg.smartSupport; }; + +in { + + options = { + + services.thinkfan = { + + enable = mkOption { + type = types.bool; + default = false; + description = '' + Whether to enable thinkfan, fan controller for IBM/Lenovo ThinkPads. + ''; + }; + + smartSupport = mkOption { + type = types.bool; + default = false; + description = '' + Whether to build thinkfan with SMART support to read temperatures + directly from hard disks. + ''; + }; + + sensors = mkOption { + type = types.lines; + default = '' + tp_thermal /proc/acpi/ibm/thermal (0,0,10) + ''; + description ='' + thinkfan can read temperatures from three possible sources: + + /proc/acpi/ibm/thermal + Which is provided by the thinkpad_acpi kernel + module (keyword tp_thermal) + + /sys/class/hwmon/*/temp*_input + Which may be provided by any hwmon drivers (keyword + hwmon) + + S.M.A.R.T. (requires smartSupport to be enabled) + Which reads the temperature directly from the hard + disk using libatasmart (keyword atasmart) + + Multiple sensors may be added, in which case they will be + numbered in their order of appearance. + ''; + }; + + fan = mkOption { + type = types.str; + default = "tp_fan /proc/acpi/ibm/fan"; + description ='' + Specifies the fan we want to use. + On anything other than a Thinkpad you'll probably + use some PWM control file in /sys/class/hwmon. + A sysfs fan would be specified like this: + pwm_fan /sys/class/hwmon/hwmon2/device/pwm1 + ''; + }; + + levels = mkOption { + type = types.lines; + default = '' + (0, 0, 55) + (1, 48, 60) + (2, 50, 61) + (3, 52, 63) + (6, 56, 65) + (7, 60, 85) + (127, 80, 32767) + ''; + description = '' + (LEVEL, LOW, HIGH) + LEVEL is the fan level to use (0-7 with thinkpad_acpi). + LOW is the temperature at which to step down to the previous level. + HIGH is the temperature at which to step up to the next level. + All numbers are integers. + ''; + }; + + + }; + + }; + + config = mkIf cfg.enable { + + environment.systemPackages = [ thinkfan ]; + + systemd.services.thinkfan = { + description = "Thinkfan"; + after = [ "basic.target" ]; + wantedBy = [ "multi-user.target" ]; + path = [ thinkfan ]; + serviceConfig.ExecStart = "${thinkfan}/bin/thinkfan -n -c ${configFile}"; + }; + + boot.extraModprobeConfig = "options thinkpad_acpi experimental=1 fan_control=1"; + + }; +} |