2011-03-30 13:49:47 +00:00
|
|
|
.TH APM 8
|
|
|
|
|
.SH NAME
|
|
|
|
|
apm \- Advanced Power Management 1.2 BIOS interface
|
|
|
|
|
.SH SYNOPSIS
|
|
|
|
|
.I (in plan9.ini)
|
|
|
|
|
.B apm0=
|
|
|
|
|
.PP
|
|
|
|
|
bind -a '#P' /dev
|
|
|
|
|
.PP
|
|
|
|
|
.B aux/apm
|
|
|
|
|
[
|
|
|
|
|
.B -d
|
|
|
|
|
.I device
|
|
|
|
|
]
|
|
|
|
|
[
|
|
|
|
|
.B -m
|
|
|
|
|
.I mountpoint
|
|
|
|
|
]
|
|
|
|
|
[
|
|
|
|
|
.B -s
|
|
|
|
|
.I service
|
|
|
|
|
]
|
|
|
|
|
.SH DESCRIPTION
|
|
|
|
|
.I Aux/apm
|
|
|
|
|
presents at
|
|
|
|
|
.I mountpoint
|
|
|
|
|
(default
|
|
|
|
|
.BR /mnt/apm )
|
|
|
|
|
an interface to the APM 1.2 BIOS
|
|
|
|
|
(see
|
|
|
|
|
.IR apm (3))
|
|
|
|
|
.I device
|
|
|
|
|
(the default is to try
|
|
|
|
|
.BR /dev/apm ,
|
|
|
|
|
followed by
|
|
|
|
|
.BR #P/apm ).
|
|
|
|
|
If a
|
|
|
|
|
.I service
|
|
|
|
|
is specified, the interface will be
|
|
|
|
|
posted at
|
|
|
|
|
.BI /srv/ service
|
|
|
|
|
as well.
|
|
|
|
|
.PP
|
|
|
|
|
The directory contains the following files.
|
|
|
|
|
.TP
|
|
|
|
|
.B battery
|
|
|
|
|
Contains one line for each battery in the system.
|
|
|
|
|
Each line lists three fields: the status (a string, one of
|
|
|
|
|
.BR unknown ,
|
|
|
|
|
.BR high ,
|
|
|
|
|
.BR low ,
|
|
|
|
|
.BR critical ,
|
|
|
|
|
or
|
|
|
|
|
.BR charging ),
|
|
|
|
|
the percent charge remaining, and
|
|
|
|
|
an estimate of the amount of time left in seconds.
|
|
|
|
|
If either or both of the last two are unknown,
|
|
|
|
|
the corresponding field will be zero.
|
|
|
|
|
.TP
|
|
|
|
|
.B ctl
|
|
|
|
|
The
|
|
|
|
|
.B ctl
|
|
|
|
|
file is used to set power management modes for
|
|
|
|
|
various parts of the system.
|
|
|
|
|
Control messages are of the form
|
|
|
|
|
.RI `` device " " verb ,''
|
|
|
|
|
where
|
|
|
|
|
.I device
|
|
|
|
|
is one of
|
|
|
|
|
.BR system ,
|
|
|
|
|
.BR display ,
|
|
|
|
|
.BR storage ,
|
|
|
|
|
.BR lpt ,
|
|
|
|
|
.BR eia ,
|
|
|
|
|
.BR network ,
|
|
|
|
|
and
|
|
|
|
|
.BR pcmcia ,
|
|
|
|
|
and
|
|
|
|
|
.I verb is one of
|
|
|
|
|
.BR enable ,
|
|
|
|
|
.BR disable ,
|
|
|
|
|
.BR standby ,
|
2011-08-23 05:53:55 +00:00
|
|
|
.BR off
|
2011-03-30 13:49:47 +00:00
|
|
|
and
|
|
|
|
|
.BR on .
|
|
|
|
|
.B Enable
|
|
|
|
|
and
|
|
|
|
|
.B disable
|
|
|
|
|
control whether power management is active
|
|
|
|
|
for the device, while
|
|
|
|
|
.B standby
|
|
|
|
|
puts the device into standby mode
|
|
|
|
|
and
|
|
|
|
|
.B on
|
|
|
|
|
brings it back to full power.
|
|
|
|
|
.TP
|
|
|
|
|
.B event
|
|
|
|
|
Reads from this file will block until an APM event
|
|
|
|
|
has occurred.
|
|
|
|
|
A large enough read is guaranteed to return
|
|
|
|
|
an integral number of textual event descriptions, one per line.
|
|
|
|
|
.SH SOURCE
|
|
|
|
|
.B /sys/src/cmd/aux/apm.c
|
|
|
|
|
.br
|
|
|
|
|
.B /acme/bin/Battery
|
|
|
|
|
.SH BUGS
|
|
|
|
|
The verbs
|
|
|
|
|
.B suspend
|
|
|
|
|
and
|
|
|
|
|
.B off
|
|
|
|
|
should be supported but doing so requires
|
|
|
|
|
nontrivial help from the kernel.
|
2020-07-30 09:25:14 +00:00
|
|
|
.SH "SEE ALSO"
|
|
|
|
|
.IR acpi (8)
|
