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path: root/sys/hardware/thinkpad.nix
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{
  config,
  lib,
  pkgs,
  ...
}:
with lib; let
  cfg = config.local.hardware.thinkpad;
in {
  options.local.hardware.thinkpad = {
    enable = mkEnableOption "Thinkpad hardware support";
  };

  config = mkIf cfg.enable {
    # For suspending to RAM to work, set Config -> Power -> Sleep State to "Linux" in EFI.
    # See https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Suspend_issues
    # Fingerprint sensor requires a firmware-update to work.

    boot = {
      extraModulePackages = with config.boot.kernelPackages; [acpi_call];
      extraModprobeConfig = "options iwlwifi 11n_disable=1 wd_disable=1";

      # acpi_call makes tlp work for newer thinkpads
      kernelModules = ["acpi_call"];

      # Force use of the thinkpad_acpi driver for backlight control.
      # This allows the backlight save/load systemd service to work.
      kernelParams = ["acpi_backlight=native"];
    };

    hardware.firmware = [pkgs.sof-firmware];

    local.hardware.laptop.enable = true;

    services = {
      fprintd.enable = true;
      thinkfan.enable = true;
      tlp.enable = true;
      tp-auto-kbbl.enable = true;
    };
  };
}