47 lines
1.1 KiB
Nix
47 lines
1.1 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
let
|
|
cfg = config.hardware.raspberry-pi."4".audio;
|
|
in
|
|
{
|
|
options.hardware = {
|
|
raspberry-pi."4".audio = {
|
|
enable = lib.mkEnableOption ''
|
|
configuration for audio
|
|
'';
|
|
};
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
hardware.deviceTree = {
|
|
overlays = [
|
|
# Equivalent to dtparam=audio=on
|
|
{
|
|
name = "audio-on-overlay";
|
|
dtsText = ''
|
|
/dts-v1/;
|
|
/plugin/;
|
|
/ {
|
|
compatible = "brcm,bcm2711";
|
|
fragment@0 {
|
|
target = <&audio>;
|
|
|
|
__overlay__ {
|
|
status = "okay";
|
|
};
|
|
};
|
|
};
|
|
'';
|
|
}
|
|
];
|
|
};
|
|
|
|
# set tsched=0 in pulseaudio config to avoid audio glitches
|
|
# see https://wiki.archlinux.org/title/PulseAudio/Troubleshooting#Glitches,_skips_or_crackling
|
|
hardware.pulseaudio.configFile = lib.mkOverride 990 (pkgs.runCommand "default.pa" {} ''
|
|
sed 's/module-udev-detect$/module-udev-detect tsched=0/' ${config.hardware.pulseaudio.package}/etc/pulse/default.pa > $out
|
|
'');
|
|
};
|
|
}
|
|
|