feat: amd stuff

modules/nixos/hardware/amdgpu.nix

@@ -0,0 +1,32 @@
+{ pkgs, lib, config, ... }:
+with lib;
+
+let cfg = config.hardware.amdgpu.preset.default;
+
+in {
+  options.hardware.amdgpu.preset.default = {
+    enable =
+      mkEnableOption "Enable ADM GPU driver support with some sane defaults";
+  };
+
+  config = mkIf cfg.enable {
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      extraPackages = with pkgs; [ rocmPackages.clr.icd ];
+    };
+
+    boot = {
+      # https://docs.kernel.org/gpu/amdgpu/module-parameters.html
+      kernelParams = [ "amdgpu.seamless=1" "amdgpu.freesync_video=1" ];
+      initrd.kernelModules = [ "amdgpu" ];
+    };
+
+    environment.systemPackages = with pkgs; [
+      amdgpu_top
+      glxinfo
+      libva-utils
+      vulkan-tools
+    ];
+  };
+}