1.\" $OpenBSD: pcagpio.4,v 1.9 2008/09/10 17:20:53 jmc Exp $ 2.\" 3.\" Copyright (c) 2005 Theo de Raadt <deraadt@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: September 10 2008 $ 18.Dt PCAGPIO 4 19.Os 20.Sh NAME 21.Nm pcagpio 22.Nd Philips PCA955[4567] GPIO controller 23.Sh SYNOPSIS 24.Cd "pcagpio* at iic?" 25.Cd "gpio* at pcagpio?" 26.Sh DESCRIPTION 27The 28.Nm 29driver provides support for the Philips PCA955[4567] GPIO controllers. 30The PCA955[467] devices have 8 pins and the PCA9555 device has 16 pins 31which can be configured as either inputs or outputs, and accessed 32using 33.Xr gpioctl 8 . 34.\" Both values are made available through the 35.\" .Xr sysctl 8 36.\" interface. 37.Sh SEE ALSO 38.Xr gpio 4 , 39.Xr iic 4 , 40.Xr intro 4 , 41.Xr gpioctl 8 42.Sh AUTHORS 43.An -nosplit 44The 45.Nm 46driver was written by 47.An Theo de Raadt Aq deraadt@openbsd.org . 48