117 lines
3.6 KiB
Groff
117 lines
3.6 KiB
Groff
.\"-
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.\" Copyright (c) 2008 Nathan Whitehorn <nwhitehorn@FreeBSD.org>
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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. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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.\" 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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.\" $FreeBSD$
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.\"
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.Dd December 6, 2008
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.Dt PMU 4
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.Os
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.Sh NAME
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.Nm pmu
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.Nd Apple PMU99 Power Management Driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device adb"
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.Cd "device pmu"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the Power Management Unit (PMU) found in Apple
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Core99 hardware.
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This includes late G3 laptops, all G4 machines, early G5
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desktops and all G5 XServes.
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.Pp
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The Apple PMU controller is a multi-purpose ASIC that provides power
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management and thermal control, as well as an ADB bus for the internal
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keyboard and mouse on laptops.
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.Sh HARDWARE
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Chips supported by the
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.Nm
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driver include:
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.Pp
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.Bl -bullet -compact
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.It
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Apple KeyLargo PMU
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.It
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Apple K2-KeyLargo PMU
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.El
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.Sh SYSCTL VARIABLES
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The
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.Nm
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driver provides power management services in addition to an
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.Xr adb 4
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interface.
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The following sysctls can be used to control the
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power management behavior and to examine current system power and
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thermal conditions.
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.Bl -tag -width indent
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.It Va dev.pmu.%d.server_mode
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Restart after power failure behavior (1 causes system to reboot after power
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cut, 0 causes system to remain off).
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.It Va dev.pmu.%d.batteries.%d.present
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Indicates whether the relevant battery is inserted.
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.It Va dev.pmu.%d.batteries.%d.charging
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Indicates whether the battery is currently charging.
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.It Va dev.pmu.%d.batteries.%d.charge
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The current battery charge, in milliamp hours.
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.It Va dev.pmu.%d.batteries.%d.maxcharge
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The battery's self-reported maximum charge, in milliamp hours.
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.It Va dev.pmu.%d.batteries.%d.rate
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The current into the battery, in milliamps.
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While the battery is discharging,
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this will be negative.
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.It Va dev.pmu.%d.batteries.%d.voltage
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Battery voltage, in millivolts.
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.It Va dev.pmu.%d.batteries.%d.time
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Estimated time until full battery charge (or discharge), in minutes.
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.It Va dev.pmu.%d.batteries.%d.life
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Current fraction of the battery's maximum charge, in percent.
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.El
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr adb 4 ,
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.Xr led 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 4.0 ,
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and then in
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.Fx 8.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Michael Lorenz Aq Mt macallan@NetBSD.org
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and ported to
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.Fx
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by
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.An Nathan Whitehorn Aq Mt nwhitehorn@FreeBSD.org .
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