1.\" $OpenBSD: macgpio.4,v 1.8 2011/05/25 18:14:55 jmc Exp $ 2.\" 3.\" Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: May 25 2011 $ 18.Dt MACGPIO 4 macppc 19.Os 20.Sh NAME 21.Nm macgpio 22.Nd support for on-board GPIO controllers 23.Sh SYNOPSIS 24.Cd "macgpio* at macobio?" 25.Cd "macgpio* at macgpio?" 26.Sh DESCRIPTION 27The 28.Nm 29device provides support for GPIO controllers found on many 30Apple machines. 31.Pp 32.Ox 33provides support for the following devices: 34.Pp 35.Bl -tag -width 14n -offset indent -compact 36.It Xr dfs 4 37Dynamic Frequency Switching 38.It Xr pgs 4 39programmer's switch 40.It Xr sysbutton 4 41Xserve G4 and G5 front system identifier button 42.El 43.Sh SEE ALSO 44.Xr intro 4 , 45.Xr macobio 4 46