hardware/power.nix: init

modules/system/hardware/module.nix

@@ -1,5 +1,10 @@
 _: {
-  imports = [./bluetooth.nix ./keyboard ./graphics.nix];
+  imports = [
+    ./bluetooth.nix
+    ./keyboard
+    ./graphics.nix
+    ./power.nix
+  ];
 
   services.irqbalance.enable = true;
 }

modules/system/hardware/power.nix

@@ -0,0 +1,70 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib.modules) mkDefault;
+in {
+  config = {
+    environment.systemPackages = builtins.attrValues {
+      inherit
+        (pkgs)
+        acpi
+        powertop
+        ;
+    };
+
+    boot = {
+      kernelModules = ["acpi_call"];
+      extraModulePackages = with config.boot.kernelPackages; [
+        acpi_call
+        cpupower
+      ];
+    };
+
+    hardware.acpilight.enable = false;
+
+    services = {
+      upower = {
+        enable = true;
+        percentageLow = 15;
+        percentageCritical = 5;
+      };
+
+      acpid = {
+        enable = true;
+        logEvents = true;
+      };
+
+      # INFO: Only works on Intel
+      undervolt = {
+        enable = true;
+
+        tempBat = 65;
+        package = pkgs.undervolt;
+      };
+
+      auto-cpufreq = {
+        enable = true;
+        settings = {
+          charger = {
+            governor = "performance";
+            energy_performance_preference = "performance";
+            scaling_min_freq = mkDefault 1800000;
+            scaling_max_freq = mkDefault 3800000;
+            turbo = "auto";
+          };
+
+          battery = {
+            governor = "powersave";
+            energy_performance_preference = "power";
+            scaling_min_freq = mkDefault 1200000;
+            scaling_max_freq = mkDefault 1800000;
+            turbo = "never";
+          };
+        };
+      };
+    };
+  };
+}