swsensor.4 revision 1.2
$NetBSD: swsensor.4,v 1.2 2010/10/19 12:53:23 wiz Exp $
Copyright (c) 2010 The NetBSD Foundation
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd October 19, 2010 .Dt SWSENSOR 4 .Os .Sh NAME .Nm swsensor .Nd software environmental sensor .Sh SYNOPSIS .Cd "pseudo-device swsensor" .Sh DESCRIPTION The .Nm driver provides a software environmental sensor that works with .Xr sysctl 8 and .Xr envstat 8 . The driver creates a single sensor which is intended to be loaded as a kernel module. By default, the sensor is of type .Dv ENVSYS_UNITS_INTEGER . This can be overridden when the module is loaded by passing the desired sensor type in the property list with .Xr modload 8 . For example, .Dl Ic modload -i type=1 swsensor will create a sensor of type .Dv ENVSYS_UNITS_SFANRPM .
Copyright (c) 2010 The NetBSD Foundation
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd October 19, 2010 .Dt SWSENSOR 4 .Os .Sh NAME .Nm swsensor .Nd software environmental sensor .Sh SYNOPSIS .Cd "pseudo-device swsensor" .Sh DESCRIPTION The .Nm driver provides a software environmental sensor that works with .Xr sysctl 8 and .Xr envstat 8 . The driver creates a single sensor which is intended to be loaded as a kernel module. By default, the sensor is of type .Dv ENVSYS_UNITS_INTEGER . This can be overridden when the module is loaded by passing the desired sensor type in the property list with .Xr modload 8 . For example, .Dl Ic modload -i type=1 swsensor will create a sensor of type .Dv ENVSYS_UNITS_SFANRPM .
p The sensor's raw value can be manually updated by modifying the .Xr sysctl 8 variable .Dq hw.swsensor.cur_value . .Sh SEE ALSO .Xr modctl 2 , .Xr envstat 8 , .Xr sysctl 8 .Sh HISTORY The .Nm driver was written by .An Paul Goyette and first appeared in .Nx 6.0 .