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+.\" $NetBSD: stuirda.4,v 1.8 2012/03/17 11:11:00 wiz Exp $
+.\"
+.\" Copyright (c) 2007 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Lennart Augustsson.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd October 13, 2008
+.Dt STUIRDA 4
+.Os
+.Sh NAME
+.Nm stuirda
+.Nd Sigmaltel 4116/4220 USB-IrDA bridge support
+.Sh SYNOPSIS
+.Cd "stuirda*   at uhub?"
+.Cd "irframe* at uirda?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for SigmaTels USB-IrDA bridges that nearly follow
+the bridge specification:
+.Pp
+.Bl -tag -width Dv -offset indent -compact
+.It Tn SigmaTel ST4116
+.It Tn SigmaTel ST4210
+.It Tn SigmaTel ST4220
+.El
+.Pp
+Access to the IrDA device is through the
+.Xr irframe 4
+driver.
+Before accessing it, a firmware patch must be downloaded.
+At the time of writing this, it can be found at:
+.Lk http://www.sigmatel.com/documents/stir4210_4220_4116_patch_files.tar.gz
+.Pp
+Unpack the archive with
+.Pp
+.Nm tar
+.Fl C
+.Pa /libdata/firmware/stuirda/
+.Fl xzf
+.Ar stir4210_4220_4116_patch_files.tar.gz
+.Sh SEE ALSO
+.Xr irframe 4 ,
+.Xr usb 4
+.Sh HISTORY
+The
+.Nm
+driver
+appeared in
+.Nx 5.0 .
+.Sh BUGS
+.Nm stuirda
+needs the firmware for configuration, so it can't be loaded at kernel
+startup time.
+As a workaround, you can plug in the USB-IrDA-bridge after booting.