diff options
Diffstat (limited to 'nixos/modules/hardware/corectrl.nix')
-rw-r--r-- | nixos/modules/hardware/corectrl.nix | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/nixos/modules/hardware/corectrl.nix b/nixos/modules/hardware/corectrl.nix new file mode 100644 index 00000000000..3185f6486c7 --- /dev/null +++ b/nixos/modules/hardware/corectrl.nix @@ -0,0 +1,62 @@ +{ config, pkgs, lib, ... }: + +with lib; + +let + cfg = config.programs.corectrl; +in +{ + options.programs.corectrl = { + enable = mkEnableOption '' + A tool to overclock amd graphics cards and processors. + Add your user to the corectrl group to run corectrl without needing to enter your password + ''; + + gpuOverclock = { + enable = mkEnableOption '' + true + ''; + ppfeaturemask = mkOption { + type = types.str; + default = "0xfffd7fff"; + example = "0xffffffff"; + description = '' + Sets the `amdgpu.ppfeaturemask` kernel option. + In particular, it is used here to set the overdrive bit. + Default is `0xfffd7fff` as it is less likely to cause flicker issues. + Setting it to `0xffffffff` enables all features. + ''; + }; + }; + }; + + config = mkIf cfg.enable (lib.mkMerge [ + { + environment.systemPackages = [ pkgs.corectrl ]; + + services.dbus.packages = [ pkgs.corectrl ]; + + users.groups.corectrl = { }; + + security.polkit.extraConfig = '' + polkit.addRule(function(action, subject) { + if ((action.id == "org.corectrl.helper.init" || + action.id == "org.corectrl.helperkiller.init") && + subject.local == true && + subject.active == true && + subject.isInGroup("corectrl")) { + return polkit.Result.YES; + } + }); + ''; + } + + (lib.mkIf cfg.gpuOverclock.enable { + # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/amd/include/amd_shared.h#n169 + # The overdrive bit + boot.kernelParams = [ "amdgpu.ppfeaturemask=${cfg.gpuOverclock.ppfeaturemask}" ]; + }) + ]); + + meta.maintainers = with lib.maintainers; [ artturin ]; +} |