Adds gpioiic.4 and gpioled.4 man pages. Moves some of the information that

was previously available on gpio.4 to their respectives pages.  Add the
cross references on gpioctl.8.

Approved by:	adrian (mentor)

1 files changed, 83 insertions, 0 deletions

diff --git a/share/man/man4/gpioled.4 b/share/man/man4/gpioled.4
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+.\" Copyright (c) 2013, Luiz Otavio O Souza <loos@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" 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 AUTHOR 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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd November 5, 2013
+.Dt GPIOLED 4
+.Os
+.Sh NAME
+.Nm gpioled
+.Nd GPIO led generic device driver
+.Sh SYNOPSIS
+.Cd "device gpio"
+.Cd "device gpioled"
+.Pp
+This driver attaches a
+.Xr led 4
+device to a GPIO pin.
+.Sh DESCRIPTION
+The
+.Em gpioled
+driver provides a glue to attach a
+.Xr led 4
+compatible device to a GPIO pin.
+Each led on the system has a
+.Pa name
+which is used to export a device in
+.Pa /dev/led/<name> .
+The GPIO pin can then be controlled by writing to this device as described
+on
+.Xr led 4 .
+.Pp
+On a hint based system, like
+.Li MIPS , these values are configureable for
+.Nm :
+.Bl -tag -width ".Va hint.gpioiic.%d.atXXX"
+.It Va hint.gpioled.%d.at
+The gpiobus you are attaching to.
+Normally assigned to gpiobus0.
+.It Va hint.gpioled.%d.name
+Arbitrary name of device in
+.Pa /dev/led/
+to create for
+.Xr led 4 .
+.It Va hint.gpioled.%d.pins
+Which pin on the GPIO interface to map to this instance.
+Please note that this mask should only ever have one bit set
+(any others bits - i.e., pins - will be ignored).
+.El
+.Sh SEE ALSO
+.Xr gpio 4 ,
+.Xr led 4 ,
+.Xr gpioiic 4
+.Sh HISTORY
+The
+.Nm
+manual page first appeared in
+.Fx 11.0 .
+.Sh AUTHORS
+This
+manual page was written by
+.An Luiz Otavio O Souza .