2 files changed, 51 insertions, 0 deletions
diff --git a/nixos/modules/hardware/onlykey/default.nix b/nixos/modules/hardware/onlykey/default.nix
new file mode 100644
index 00000000000..07358c8a878
--- /dev/null
+++ b/nixos/modules/hardware/onlykey/default.nix
@@ -0,0 +1,33 @@
+{ config, lib, ... }:
+
+with lib;
+
+{
+
+  ####### interface
+
+  options = {
+
+    hardware.onlykey = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Enable OnlyKey device (https://crp.to/p/) support.
+        '';
+      };
+    };
+
+  };
+
+  ## As per OnlyKey's documentation piece (hhttps://docs.google.com/document/d/1Go_Rs218fKUx-j_JKhddbSVTqY6P0vQO831t2MKCJC8),
+  ## it is important to add udev rule for OnlyKey for it to work on Linux
+
+  ####### implementation
+
+  config = mkIf config.hardware.onlykey.enable {
+    services.udev.extraRules = builtins.readFile ./onlykey.udev;
+  };
+
+
+}
diff --git a/nixos/modules/hardware/onlykey/onlykey.udev b/nixos/modules/hardware/onlykey/onlykey.udev
new file mode 100644
index 00000000000..9c8873aafc9
--- /dev/null
+++ b/nixos/modules/hardware/onlykey/onlykey.udev
@@ -0,0 +1,18 @@
+# UDEV Rules for OnlyKey, https://docs.crp.to/linux.html
+ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60fc", ENV{ID_MM_DEVICE_IGNORE}="1"
+ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60fc", ENV{MTP_NO_PROBE}="1"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60fc", MODE:="0666"
+KERNEL=="ttyACM*", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60fc", MODE:="0666"
+
+
+# The udev rules were updated upstream without an explanation as you can
+# see in [this comment][commit]. Assuming that hey have changed the
+# idVendor/idProduct, I've kept the old values.
+# TODO: Contact them upstream.
+#
+# [commit]: https://github.com/trustcrypto/trustcrypto.github.io/commit/0bcf928adaea559e75efa02ebd1040f0a15f611d
+#
+ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789B]?", ENV{ID_MM_DEVICE_IGNORE}="1"
+ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789A]?", ENV{MTP_NO_PROBE}="1"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789ABCD]?", GROUP="plugdev"
+KERNEL=="ttyACM*", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789B]?", GROUP="plugdev"