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authorPeter Hoeg <peter@hoeg.com>2020-05-28 19:14:51 +0800
committerGitHub <noreply@github.com>2020-05-28 19:14:51 +0800
commitad0df8414e35ffbc73fdb884f546c472b02ea7c8 (patch)
tree67ac5c60e17546e3d192672c2d2d38f6a2362d25 /nixos
parenteb2a77adc3ff0130efb6ad851c51d2a6c16243a2 (diff)
parenta3aec35383b5a4bfd89035b6d2501e03d647772e (diff)
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Merge pull request #88942 from peterhoeg/m/kde_ddc
powerdevil: add DDC support
Diffstat (limited to 'nixos')
-rw-r--r--nixos/modules/services/x11/desktop-managers/plasma5.nix19
1 files changed, 19 insertions, 0 deletions
diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index 60ef0159ff1a..6d48b899d231 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -158,6 +158,19 @@ in
         example = "vlc";
         description = "Phonon audio backend to install.";
       };
+
+      supportDDC = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Support setting monitor brightness via DDC.
+          </para>
+          <para>
+          This is not needed for controlling brightness of the internal monitor
+          of a laptop and as it is considered experimental by upstream, it is
+          disabled by default.
+        '';
+      };
     };
 
   };
@@ -184,6 +197,12 @@ in
         };
       };
 
+      # DDC support
+      boot.kernelModules = lib.optional cfg.supportDDC "i2c_dev";
+      services.udev.extraRules = lib.optionalString cfg.supportDDC ''
+        KERNEL=="i2c-[0-9]*", TAG+="uaccess"
+      '';
+
       environment.systemPackages = with pkgs; with qt5; with libsForQt5; with plasma5; with kdeApplications;
         [
           frameworkintegration