1.\" $OpenBSD: isagpio.4,v 1.5 2013/07/16 16:05:49 schwarze Exp $ 2.\" 3.\" Copyright (c) 2006 Oleg Safiullin <form@pdp-11.org.ru> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice unmodified, this list of conditions, and the following 11.\" disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd $Mdocdate: July 16 2013 $ 29.Dt ISAGPIO 4 30.Os 31.Sh NAME 32.Nm isagpio 33.Nd ISA I/O mapped as GPIO 34.Sh SYNOPSIS 35.Cd "isagpio0 at isa? port 0x78" 36.Cd "isagpio1 at isa? port 0x80" 37.Cd "gpio* at isagpio?" 38.Sh DESCRIPTION 39The 40.Nm 41driver allows access to the 8-bit ISA I/O space through the 42.Xr gpio 4 43framework, thus making use of the simple GPIO devices connected directly 44to the ISA bus. 45.Sh SEE ALSO 46.Xr gpio 4 , 47.Xr intro 4 , 48.Xr isa 4 , 49.Xr gpioctl 8 50.Sh HISTORY 51The 52.Nm 53driver first appeared in 54.Ox 4.0 . 55.Sh AUTHORS 56The 57.Nm 58driver was written by 59.An Oleg Safiullin Aq Mt form@pdp-11.org.ru . 60