From 17fc78ea58790e0f6616145149de74d171c10641 Mon Sep 17 00:00:00 2001
From: Gabriel Fontes <eu@misterio.me>
Date: Fri, 8 Apr 2022 15:00:27 -0300
Subject: [PATCH] nixos/argonone: init

---
 .../from_md/release-notes/rl-2205.section.xml |  8 +++
 .../manual/release-notes/rl-2205.section.md   |  2 +
 nixos/modules/module-list.nix                 |  1 +
 nixos/modules/services/hardware/argonone.nix  | 58 +++++++++++++++++++
 4 files changed, 69 insertions(+)
 create mode 100644 nixos/modules/services/hardware/argonone.nix

diff --git a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
index 5208671e4dab..8ef398e25fd0 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
@@ -146,6 +146,14 @@
           a kernel module for mounting the Apple File System (APFS).
         </para>
       </listitem>
+      <listitem>
+        <para>
+          <link xlink:href="https://gitlab.com/DarkElvenAngel/argononed">argonone</link>,
+          a replacement daemon for the Raspberry Pi Argon One power
+          button and cooler. Available at
+          <link xlink:href="options.html#opt-services.hardware.argonone.enable">services.hardware.argonone</link>.
+        </para>
+      </listitem>
       <listitem>
         <para>
           <link xlink:href="https://github.com/JustArchiNET/ArchiSteamFarm">ArchiSteamFarm</link>,
diff --git a/nixos/doc/manual/release-notes/rl-2205.section.md b/nixos/doc/manual/release-notes/rl-2205.section.md
index faf941f56996..d83eb18f5141 100644
--- a/nixos/doc/manual/release-notes/rl-2205.section.md
+++ b/nixos/doc/manual/release-notes/rl-2205.section.md
@@ -61,6 +61,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - [apfs](https://github.com/linux-apfs/linux-apfs-rw), a kernel module for mounting the Apple File System (APFS).
 
+- [argonone](https://gitlab.com/DarkElvenAngel/argononed), a replacement daemon for the Raspberry Pi Argon One power button and cooler. Available at [services.hardware.argonone](options.html#opt-services.hardware.argonone.enable).
+
 - [ArchiSteamFarm](https://github.com/JustArchiNET/ArchiSteamFarm), a C# application with primary purpose of idling Steam cards from multiple accounts simultaneously. Available as [services.archisteamfarm](#opt-services.archisteamfarm.enable).
 
 - [BaGet](https://loic-sharma.github.io/BaGet/), a lightweight NuGet and symbol server. Available at [services.baget](#opt-services.baget.enable).
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index d59d7bfe40d9..a6e5e3054d48 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -428,6 +428,7 @@
   ./services/games/terraria.nix
   ./services/hardware/acpid.nix
   ./services/hardware/actkbd.nix
+  ./services/hardware/argonone.nix
   ./services/hardware/auto-cpufreq.nix
   ./services/hardware/bluetooth.nix
   ./services/hardware/bolt.nix
diff --git a/nixos/modules/services/hardware/argonone.nix b/nixos/modules/services/hardware/argonone.nix
new file mode 100644
index 000000000000..638181b1b12e
--- /dev/null
+++ b/nixos/modules/services/hardware/argonone.nix
@@ -0,0 +1,58 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.services.hardware.argonone;
+in
+{
+  options.services.hardware.argonone = {
+    enable = lib.mkEnableOption "the driver for Argon One Raspberry Pi case fan and power button";
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.argononed;
+      defaultText = "pkgs.argononed";
+      description = ''
+        The package implementing the Argon One driver
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware.i2c.enable = true;
+    hardware.deviceTree.overlays = [
+      {
+        name = "argononed";
+        dtboFile = "${cfg.package}/boot/overlays/argonone.dtbo";
+      }
+      {
+        name = "i2c1-okay-overlay";
+        dtsText = ''
+          /dts-v1/;
+          /plugin/;
+          / {
+            compatible = "brcm,bcm2711";
+            fragment@0 {
+              target = <&i2c1>;
+              __overlay__ {
+                status = "okay";
+              };
+            };
+          };
+        '';
+      }
+    ];
+    environment.systemPackages = [ cfg.package ];
+    systemd.services.argononed = {
+      description = "Argon One Raspberry Pi case Daemon Service";
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type = "forking";
+        ExecStart = "${cfg.package}/bin/argononed";
+        PIDFile = "/run/argononed.pid";
+        Restart = "on-failure";
+      };
+    };
+  };
+
+  meta.maintainers = with lib.maintainers; [ misterio77 ];
+
+}