The
stuirda driver provides support for SigmaTels USB-IrDA bridges that nearly follow the bridge specification:
Access to the IrDA device is through the
irframe(4) driver. Before accessing it, a firmware patch must be downloaded. At the time of writing this, it can be found at:
http://www.sigmatel.com/documents/stir4210_4220_4116_patch_files.tar.gz
Unpack the archive with
tar -C /libdata/firmware/stuirda/ -xzf stir4210_4220_4116_patch_files.tar.gz