From 9a9d0ba266f3d78f8edf816d4944d5ec8bd450b0 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Thu, 13 May 2021 15:05:57 +0200
Subject: [PATCH] services: add TLP

---
 services/default.nix |  1 +
 services/tlp.nix     | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 services/tlp.nix

diff --git a/services/default.nix b/services/default.nix
index fc377d9..6096454 100644
--- a/services/default.nix
+++ b/services/default.nix
@@ -22,6 +22,7 @@
     ./rss-bridge.nix
     ./sabnzbd.nix
     ./ssh-server.nix
+    ./tlp.nix
     ./transmission.nix
     ./wireguard.nix
   ];
diff --git a/services/tlp.nix b/services/tlp.nix
new file mode 100644
index 0000000..a560319
--- /dev/null
+++ b/services/tlp.nix
@@ -0,0 +1,22 @@
+# TLP power management
+{ config, lib, ... }:
+let
+  cfg = config.my.services.tlp;
+in
+{
+  options.my.services.tlp = {
+    enable = lib.mkEnableOption "TLP power management configuration";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.tlp = {
+      enable = true;
+
+      settings = {
+        # Keep charge between 60% and 80% to preserve battery life
+        START_CHARGE_THRESH_BAT0 = 60;
+        STOP_CHARGE_THRESH_BAT0 = 80;
+      };
+    };
+  };
+}