nixos-config/modules/power.nix

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2020-02-17 17:00:59 +04:00
{ config, pkgs, lib, ... }:
with rec {
inherit (config) device devices deviceSpecific;
};
with deviceSpecific; {
services.udev.extraRules = if isLaptop then
''
ACTION=="add|change", KERNEL=="sd*[!0-9]|sr*", ATTR{queue/scheduler}="bfq"
ACTION=="change", SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${
pkgs.systemd
}/bin/systemctl start battery"
ACTION=="change", SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="${
pkgs.systemd
}/bin/systemctl start ac"
ACTION=="add|change", SUBSYSTEM=="backlight", MODE:="0777"
'' + (if device == "ASUS-Laptop" then ''
ACTION=="add|change", SUBSYSTEM=="net", KERNEL=="wlan*" RUN+="${
pkgs.iw
}/bin/iw dev %k set power_save off"
'' else
"")
else
"";
systemd.services.battery = {
enable = isLaptop;
description = "Executes commands needed on battery power";
script = ''
${
pkgs.linuxPackages_latest.cpupower
}/bin/cpupower frequency-set -g powersave
${pkgs.hdparm}/bin/hdparm -B 1 /dev/sda
echo "500" > /sys/class/backlight/*/brightness
'';
};
systemd.services.ac = {
enable = isLaptop;
description = "Executes commands needed on ac power";
script = ''
${
pkgs.linuxPackages_latest.cpupower
}/bin/cpupower frequency-set -g performance
${pkgs.hdparm}/bin/hdparm -B 255 /dev/sda
echo "900" > /sys/class/backlight/*/brightness
'';
};
}