67 lines
2.1 KiB
Groff
67 lines
2.1 KiB
Groff
.\" $NetBSD: acpipmtr.4,v 1.1 2011/01/05 20:08:13 jruoho Exp $
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.\"
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.\" Copyright (c) 2010 Jukka Ruohonen <jruohonen@iki.fi>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Neither the name of the author nor the names of any
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 22, 2010
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.Dt ACPIPMTR 4
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.Os
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.Sh NAME
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.Nm acpipmtr
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.Nd ACPI Power Meter
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.Sh SYNOPSIS
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.Cd "acpipmtr* at acpi?"
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.Sh DESCRIPTION
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The
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.Nm
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device driver provides support for
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.Dq power meters .
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These are sensors that approximate the current
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power consumption of the system.
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Alternatively, a power meter may measure also the power gain
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when the system is connected to an external power supply.
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.Pp
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The available information (namely, the power consumption)
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is made available through the
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.Xr envsys 4
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.Tn API
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and the
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.Xr envstat 8
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command.
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr acpibat 4
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.Sh HISTORY
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The
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.Nm
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device driver appeared in
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.Nx 6.0 .
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.Sh AUTHORS
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.An Jukka Ruohonen
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.Aq jruohonen@iki.fi
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.Sh CAVEATS
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The
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.Nm
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driver is experimental.
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