.\"	$OpenBSD: tda.4,v 1.4 2008/03/17 11:01:14 robert Exp $
.\"
.\" Copyright (c) 2008 Robert Nagy <robert@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: March 17 2008 $
.Dt TDA 4 sparc64
.Os
.Sh NAME
.Nm tda
.Nd Philips TDA8444 fan controller
.Sh SYNOPSIS
.Cd "tda* at iic?"
.Sh DESCRIPTION
The
.Nm
driver supports the TDA8444 DAC to adjust the output voltage to the fans
on Sun Blade 1000/2000 machines.
.Pp
The driver watches the internal and external temperature provided by the
sensors framework and adjusts the fan speeds accordingly.
.Sh SEE ALSO
.Xr iic 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.3 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Robert Nagy Aq robert@openbsd.org
and
.An Mark Kettenis Aq kettenis@openbsd.org .