feat: musicpi

nixos-modules/hardware/hifiberry-dac.nix

@@ -0,0 +1,53 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.ragon.hardware.hifiberry-dac;
+in
+{
+  options.ragon.hardware.hifiberry-dac.enable = lib.mkEnableOption "Enables hifiberry dac";
+  config = lib.mkIf cfg.enable {
+    hardware.deviceTree = {
+      overlays = [
+        # Equivalent to: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
+        {
+          name = "hifiberry-dac-overlay";
+          dtsText = ''
+            // Definitions for HiFiBerry DAC
+            /dts-v1/;
+            /plugin/;
+
+            / {
+              compatible = "brcm,bcm2835";
+
+              fragment@0 {
+                target = <&i2s>;
+                __overlay__ {
+                  status = "okay";
+                };
+              };
+
+              fragment@1 {
+                target-path = "/";
+                __overlay__ {
+                  pcm5102a-codec {
+                    #sound-dai-cells = <0>;
+                    compatible = "ti,pcm5102a";
+                    status = "okay";
+                  };
+                };
+              };
+
+              fragment@2 {
+                target = <&sound>;
+                __overlay__ {
+                  compatible = "hifiberry,hifiberry-dac";
+                  i2s-controller = <&i2s>;
+                  status = "okay";
+                };
+              };
+            };
+          '';
+        }
+      ];
+    };
+  };
+}