From 470a70148a22406aeb248405858ff4fc6f39dbce Mon Sep 17 00:00:00 2001
From: coolneng <akasroua@gmail.com>
Date: Tue, 9 Jan 2024 13:55:49 +0100
Subject: [PATCH] Couple power-profiles-daemon and AMD P-State EPP

---
 flake.lock        | 23 ++++++++++++++++++++++-
 flake.nix         | 16 ++++++++++------
 modules/power.nix |  3 +++
 3 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/flake.lock b/flake.lock
index 78bbf8b..042d0d1 100644
--- a/flake.lock
+++ b/flake.lock
@@ -397,6 +397,26 @@
         "type": "github"
       }
     },
+    "pp-to-amd-epp": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1700307756,
+        "narHash": "sha256-PlinfzkBIWJMO9y2kb1b/1CArG6pMJZ6wyolNMdKSJM=",
+        "owner": "marcinx64",
+        "repo": "pp-to-amd-epp",
+        "rev": "0fbac782cd32313864b4e5a0ff975673d6ceda6e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "marcinx64",
+        "repo": "pp-to-amd-epp",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks-nix": {
       "inputs": {
         "flake-compat": [
@@ -437,7 +457,8 @@
         "nix-index-database": "nix-index-database",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
-        "openconnect-sso": "openconnect-sso"
+        "openconnect-sso": "openconnect-sso",
+        "pp-to-amd-epp": "pp-to-amd-epp"
       }
     },
     "rust-overlay": {
diff --git a/flake.nix b/flake.nix
index 4d52fd6..fd95b6e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -32,14 +32,17 @@
       url = "github:nix-community/lanzaboote/v0.3.0";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    pp-to-amd-epp = {
+      url = "github:marcinx64/pp-to-amd-epp";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     local-bitwig = {
       url = "path:/home/coolneng/Projects/panacea/assets/bitwig";
       flake = false;
     };
   };
 
-  outputs = { self, nixpkgs, nixos-hardware, agenix, nix-index-database
-    , lanzaboote, ... }@inputs:
+  outputs = { self, nixpkgs, ... }@inputs:
     let
       system = "x86_64-linux";
 
@@ -62,10 +65,11 @@
         inherit system;
         modules = [
           (import ./configuration.nix)
-          nixos-hardware.nixosModules.lenovo-thinkpad-e14-amd
-          agenix.nixosModules.age
-          nix-index-database.nixosModules.nix-index
-          lanzaboote.nixosModules.lanzaboote
+          inputs.nixos-hardware.nixosModules.lenovo-thinkpad-e14-amd
+          inputs.agenix.nixosModules.age
+          inputs.nix-index-database.nixosModules.nix-index
+          inputs.lanzaboote.nixosModules.lanzaboote
+          inputs.pp-to-amd-epp.nixosModules.pp-to-amd-epp
         ];
         specialArgs = {
           inherit inputs;
diff --git a/modules/power.nix b/modules/power.nix
index c8326b7..b0c1fe9 100644
--- a/modules/power.nix
+++ b/modules/power.nix
@@ -4,6 +4,9 @@
   # Enable power-profiles-daemon
   services.power-profiles-daemon.enable = true;
 
+  # Integration of AMD P-State EPP with power-profiles-daemon
+  services.pp-to-amd-epp.enable = true;
+
   # Suspend when the battery is critical and autosuspend USB and PCI
   services.udev.extraRules = ''
     SUBSYSTEM=="power_supply", ATTR{status}=="Discharging", ATTR{model_name}=="01AV405", ATTR{capacity}=="[0-5]", RUN+="${config.systemd.package}/bin/systemctl suspend -i"