79 lines
2.6 KiB
Groff
79 lines
2.6 KiB
Groff
.\" $NetBSD: gtp.4,v 1.4 2014/03/18 18:20:39 riastradh Exp $
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.\" $OpenBSD: gtp.4,v 1.9 2007/05/31 19:19:50 jmc Exp $
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.\"
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.\" Copyright (c) 2002 Vladimir Popov <jumbo@narod.ru>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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.\" ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" .Dd $Mdocdate$
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.Dd March 26, 2011
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.Dt GTP 4
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.Os
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.Sh NAME
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.Nm gtp
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.Nd Gemtek PCI FM radio device
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.Sh SYNOPSIS
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.Cd "gtp* at pci? flags 0x00"
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.Cd "radio* at gtp?"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the Gemtek PCI and Guillemot MaxiRadio FM2000
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FM radio tuners.
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.Pp
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The Gemtek PCI cards are stereo FM tuners that can tune in the range
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87.5 \- 108.0 MHz, report signal status and stereo/mono on the current
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frequency, force audio output to mono, perform hardware signal search,
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and have an internal AFC.
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.Pp
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The card is based on the TEA5757 chip; see
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.Xr radio 4
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for details.
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.Pp
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The flags control the driver behavior.
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For example, with flags 0x01 the driver
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will assume that a TEA5759 chip is used.
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.Sh SEE ALSO
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.Xr intro 4 ,
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.Xr pci 4 ,
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.Xr radio 4 ,
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.Xr radio 9
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.Sh HISTORY
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The
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.Nm
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device driver appeared in
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.Ox 3.2
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and subsequently in
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.Nx 1.6
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wherein it replaced the
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.Xr mr 4
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driver.
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.Sh AUTHORS
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The
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.Nm
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driver and the man page was written by
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.An Vladimir Popov Aq Mt jumbo@narod.ru .
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.Sh BUGS
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It is impossible to determine which frequency the card is tuned to.
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Thus, the driver will report an internally stored value even if it is not
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correct (changed by some program that uses direct port access).
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