1.\" Copyright (c) 2002 Nicolas Souchu 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.Dd April 20, 2002 26.Dt VIAPM 4 27.Os 28.Sh NAME 29.Nm viapm 30.Nd VIA chipsets Power Management controller driver 31.Sh SYNOPSIS 32.Cd device iicbb 33.Cd device iicbus 34.Cd device iicsmb 35.Cd device smbus 36.Cd device smb 37.Cd device viapm 38.Sh DESCRIPTION 39This driver provides access to the 40.Tn "VIA chipset Power Management Unit" 41family. 42They are 43VT82C586B, VT82C596A, VT82C596B, VT82C686A and VT8233. 44.Pp 45The embedded controller of the VIA chipset may give you access 46to the monitoring facilities of your mainboard. 47.Pp 48The 586B support is made by software whereas other controllers support 49the SMBus protocol by hardware. 50See 51.Xr smb 4 52for writing user code to fetch voltages, temperature and so on from the 53monitoring chip of your mainboard. 54.Sh SEE ALSO 55.Xr iicbb 4 , 56.Xr iicbus 4 , 57.Xr iicsmb 4 , 58.Xr smb 4 , 59.Xr smbus 4 60.Sh HISTORY 61The 62.Nm 63manual page first appeared in 64.Fx 4.5 . 65.Sh AUTHORS 66This 67manual page was written by 68.An Nicolas Souchu Aq Mt nsouch@FreeBSD.org . 69.Sh BUGS 70Only polling mode is supported. 71