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nixos-hardware/dell/xps/sleep-resume/i2c-designware/default.nix

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Nix

{ config, lib, pkgs, ... }:
let
inherit (lib) mkIf mkOption types;
reloadDesignware = pkgs.writeShellApplication {
name = "reload-i2c-designware.sh";
runtimeInputs = [ pkgs.kmod ];
text = ''
# Reload the i2c Designware driver after resuming from sleep.
# Wait up-to 0.5 second for each module to be unloaded:
# (It should never take this long)
modprobe -r --wait 500 i2c_designware_platform
modprobe -r --wait 500 i2c_designware_core
modprobe -r --wait 500 i2c_hid_acpi
modprobe -r --wait 500 i2c_hid
# Should reload the module dependencies automatically:
modprobe i2c_designware_platform
'';
};
cfg = config.services.sleep-resume.i2c-designware;
in {
options = {
services.sleep-resume.i2c-designware = {
enable = mkOption {
default = false;
type = types.bool;
description = "Reload the i2c_designware driver after resuming from sleep.";
};
};
};
config = mkIf cfg.enable {
powerManagement.resumeCommands = "${reloadDesignware}/bin/reload-i2c-designware.sh";
};
}