nixos/modules/services/hardware/auto-epp.nix

   1 { config, lib, pkgs, ... }:
   2
   3 let
   4   cfg = config.services.auto-epp;
   5   format = pkgs.formats.ini {};
   6
   7   inherit (lib) mkOption types;
   8 in {
   9   options = {
  10     services.auto-epp = {
  11       enable = lib.mkEnableOption "auto-epp for amd active pstate";
  12
  13       package = lib.mkPackageOption pkgs "auto-epp" {};
  14
  15       settings = mkOption {
  16         type = types.submodule {
  17           freeformType = format.type;
  18           options = {
  19             Settings = {
  20               epp_state_for_AC = mkOption {
  21                 type = types.str;
  22                 default = "balance_performance";
  23                 description = ''
  24                   energy_performance_preference when on plugged in
  25
  26                   ::: {.note}
  27                   See available epp states by running:
  28                   {command}`cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences`
  29                   :::
  30                 '';
  31               };
  32
  33               epp_state_for_BAT = mkOption {
  34                 type = types.str;
  35                 default = "power";
  36                 description = ''
  37                   `energy_performance_preference` when on battery
  38
  39                   ::: {.note}
  40                   See available epp states by running:
  41                   {command}`cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences`
  42                   :::
  43                 '';
  44               };
  45             };
  46           };
  47         };
  48         default = {};
  49         description = ''
  50           Settings for the auto-epp application.
  51           See upstream example: <https://github.com/jothi-prasath/auto-epp/blob/master/sample-auto-epp.conf>
  52         '';
  53       };
  54     };
  55   };
  56
  57   config = lib.mkIf cfg.enable {
  58
  59     boot.kernelParams = [
  60       "amd_pstate=active"
  61     ];
  62
  63     environment.etc."auto-epp.conf".source = format.generate "auto-epp.conf" cfg.settings;
  64     systemd.packages = [ cfg.package ];
  65
  66     systemd.services.auto-epp = {
  67       after = [ "multi-user.target" ];
  68       wantedBy  = [ "multi-user.target" ];
  69       description = "auto-epp - Automatic EPP Changer for amd-pstate-epp";
  70       serviceConfig = {
  71         Type = "simple";
  72         User = "root";
  73         ExecStart = lib.getExe cfg.package;
  74         Restart = "on-failure";
  75       };
  76     };
  77   };
  78
  79   meta.maintainers = with lib.maintainers; [ lamarios ];
  80 }