feat: integrate system config

modules/nixos/hid-fanatecff/default.nix

@@ -0,0 +1,29 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+with lib; let
+  cfg = config.hardware.hid-fanatecff;
+  kernel = config.boot.kernelPackages.kernel;
+  fanatecKernelModule = pkgs.callPackage (import ./hid-fanatecff-module.nix) {kernel = kernel;};
+in {
+  options.hardware.hid-fanatecff = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = lib.mkDoc ''
+        Enables the Linux module drivers for Fanatec wheel bases.
+        Works with the CSL Elite, and has experimental support
+        for the ClubSport V2/V2.5, Podium DD1/DD2, CSR Elite and the CSL DD.
+      '';
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    boot = {
+      extraModulePackages = [fanatecKernelModule];
+      kernelModules = ["hid-fanatecff"];
+    };
+  };
+}

modules/nixos/hid-fanatecff/hid-fanatec-fix.patch

@@ -0,0 +1,26 @@
+From 83e8196515ed420bbbb619e015a49a504c56d6bf Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Thea=20Sch=C3=B6bl?= <dev@theaninova.de>
+Date: Mon, 18 Sep 2023 17:18:35 +0200
+Subject: [PATCH 1/1] workaround: led compile error
+
+---
+ hid-ftec.h | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/hid-ftec.h b/hid-ftec.h
+index afce2c3..3ddd514 100644
+--- a/hid-ftec.h
++++ b/hid-ftec.h
+@@ -1,6 +1,9 @@
+ #ifndef __HID_FTEC_H
+ #define __HID_FTEC_H
+ 
++// TODO: remove
++#define CONFIG_LEDS_CLASS
++
+ #define FANATEC_VENDOR_ID 0x0eb7
+ 
+ #define CLUBSPORT_V2_WHEELBASE_DEVICE_ID 0x0001
+-- 
+2.41.0
+

modules/nixos/hid-fanatecff/hid-fanatec-makefile.patch

@@ -0,0 +1,38 @@
+From 4a1395857cc00fd287926bc281ecd36fde9f45fc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Thea=20Sch=C3=B6bl?= <dev@theaninova.de>
+Date: Mon, 18 Sep 2023 17:30:11 +0200
+Subject: [PATCH 1/1] fix: nix makefile adjustments
+
+---
+ Makefile | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 0165e72..74b113c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,5 @@
+ KVERSION ?= `uname -r`
+ KDIR ?= /lib/modules/${KVERSION}/build
+-MODULEDIR ?= /lib/modules/${KVERSION}/kernel/drivers/hid
+ 
+ default:
+ 	@echo -e "\n::\033[32m Compiling Fanatec kernel module\033[0m"
+@@ -12,12 +11,10 @@ clean:
+ 	@echo "========================================"
+ 	$(MAKE) -C $(KDIR) M=$$PWD clean
+ 
+-install:
++install: default
+ 	@echo -e "\n::\033[34m Installing Fanatec kernel module/udev rule\033[0m"
+ 	@echo "====================================================="
+-	@cp -v hid-fanatec.ko ${MODULEDIR}
+-	@cp -v fanatec.rules /etc/udev/rules.d/99-fanatec.rules
+-	depmod
++	$(MAKE) -C $(KDIR) M=$$PWD INSTALL_MOD_PATH=$$out modules_install
+ 
+ uninstall:
+ 	@echo -e "\n::\033[34m Uninstalling Fanatec kernel module/udev rule\033[0m"
+-- 
+2.41.0
+

modules/nixos/hid-fanatecff/hid-fanatecff-module.nix

@@ -0,0 +1,37 @@
+{
+  lib,
+  stdenv,
+  kernel,
+  fetchFromGitHub,
+}:
+stdenv.mkDerivation rec {
+  pname = "hid-fanatecff";
+  version = "0.1.0";
+
+  src = fetchFromGitHub {
+    owner = "gotzl";
+    repo = "hid-fanatecff";
+    rev = "9c186b51ab7c6da9abef15c73b1d9eababc302a5";
+    sha256 = "14rsj4qx8vim0hx8b7a823gqbmzfginq6kpkxjfay0n1693p2895";
+  };
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+
+  makeFlags = [
+    "KVERSION=${kernel.modDirVersion}"
+    "KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+  ];
+
+  patches = [
+    ./hid-fanatec-fix.patch
+    ./hid-fanatec-makefile.patch
+  ];
+
+  meta = with lib; {
+    description = "Linux kernel driver that aims to add support for FANATEC devices";
+    homepage = "https://github.com/gotzl/hid-fanatecff";
+    license = licenses.gpl2Only;
+    platforms = platforms.linux;
+    broken = stdenv.isAarch64;
+  };
+}