feat: enhanced power saving options in specialisation

.gitignore

@@ -1 +1,2 @@
 .direnv
+result

flake.nix

@@ -64,7 +64,8 @@
     in {
       nixosConfigurations = mkHostConfigs (readHosts "nixos");
 
-      devShell.x86_64-linux = let pkgs = nixpkgs.legacyPackages.x86_64-linux;
+      devShell.x86_64-linux = let
+        pkgs = nixpkgs.legacyPackages.x86_64-linux;
       in pkgs.mkShell {
         buildInputs = with pkgs; [ nil lua-language-server ];
       };

hosts/common/specialisations/powersave.nix

@@ -2,6 +2,37 @@
 
 {
   specialisation.powersave.configuration = {
-    powerManagement.cpuFreqGovernor = "powersave";
+    services.power-profiles-daemon.enable = false;
+
+    services.tlp = {
+      enable = true;
+
+      settings = {
+        CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
+        CPU_SCALING_GOVERNOR_ON_AC = "powersave";
+        CPU_ENERGY_PREF_ON_BAT = "power";
+        CPU_ENERGY_PREF_ON_AC = "power";
+
+        CPU_BOOST_ON_AC = 1;
+        CPU_BOOST_ON_BAT = 0;
+
+        CPU_HWP_DYN_BOOST_ON_AC=1;
+        CPU_HWP_DYN_BOOST_ON_BAT=0;
+
+        CPU_MIN_PERF_ON_BAT = 0;
+        CPU_MIN_PERF_ON_AC = 0;
+        CPU_MAX_PERF_ON_BAT = 20;
+        CPU_MAX_PERF_ON_AC = 100;
+
+        AMDGPU_ABM_LEVEL_ON_AC=0;
+        AMDGPU_ABM_LEVEL_ON_BAT=3;
+
+        PLATFORM_PROFILE_ON_AC="performance";
+        PLATFORM_PROFILE_ON_BAT="low-power";
+
+        START_CHARGE_THRESH_BAT0 = 20;
+        STOP_CHARGE_THRESH_BAT0 = 80;
+      };
+    };
   };
 }