131 lines
3.8 KiB
Groff
131 lines
3.8 KiB
Groff
.\" $NetBSD: lm.4,v 1.32 2010/02/21 05:16:29 cnst Exp $
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.\"
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.\" Copyright (c) 2000 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Bill Squier.
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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 NETBSD FOUNDATION, INC. 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 February 16, 2010
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.Dt LM 4
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.Os
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.Sh NAME
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.Nm lm
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.Nd National Semiconductor LM78, LM79 and compatible hardware monitors
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.Sh SYNOPSIS
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.Cd "lm0 at isa? port 0x280 flags 0x00"
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.Cd "lm1 at isa? port 0x290 flags 0x00"
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.Cd "lm2 at isa? port 0x310 flags 0x00"
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.Cd "lm3 at isa? port 0xa00 flags 0x00"
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.Cd "lm0 at pnpbios0 index ? flags 0x00"
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.Cd "lm0 at iic? addr 0x2e flags 0x00"
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.Cd "lm* at wbsio?"
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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
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.Tn National Semiconductor
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LM series hardware monitors and register compatible chips to be used with
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the
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.Xr envsys 4
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API.
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.Pp
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Most supported devices possess 11 sensors:
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.Bl -column "Sensor" "Units" "Typical" -offset indent
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.It Sy "Sensor" Ta Sy "Units" Ta Sy "Typical Use"
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.It Li "IN0" Ta "uV DC" Ta "Core voltage"
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.It Li "IN1" Ta "uV DC" Ta "unknown"
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.It Li "IN2" Ta "uV DC" Ta "+3.3V"
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.It Li "IN3" Ta "uV DC" Ta "+5V"
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.It Li "IN4" Ta "uV DC" Ta "+12V"
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.It Li "IN5" Ta "uV DC" Ta "-12V"
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.It Li "IN6" Ta "uV DC" Ta "-5V"
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.It Li "Temp" Ta "uK" Ta "Motherboard Temperature"
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.It Li "Fan0" Ta "RPM" Ta "Fan"
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.It Li "Fan1" Ta "RPM" Ta "Chassis Fan"
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.It Li "Fan2" Ta "RPM" Ta "Fan"
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.El
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for some devices (most Winbond devices) sensor names and numbers will be
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different.
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.Pp
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Due to hardware limitations, fresh sensor data is only available every
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2 seconds.
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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 -item -offset indent
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.It
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.Tn National Semiconductor
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.Em LM78 ,
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.Em LM78-J ,
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.Em LM79
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and
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.Em LM81 .
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.It
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.Tn Winbond
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.Em W83627HF* ,
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.Em W83627THF* ,
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.Em W83627EHF* ,
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.Em W83627DHG* ,
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.Em W83637HF* ,
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.Em W83697HF* ,
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.Em W83781D ,
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.Em W83782D* ,
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.Em W83783S* ,
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.Em W83791D* ,
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.Em W83791SD
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and
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.Em W83792D .
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.It
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.Tn ASUS
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.Em AS99127F .
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.El
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.Pp
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For most of the Winbond chips (identified with a * above), the
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.Em flags
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configuration option can be specified to select the type of temperature
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sensor:
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.Bl -column "flags" "Sensor Type" -offset indent
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.It Sy "flags" Ta Sy "Sensor Type"
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.It Li "0" Ta "Thermistor diode (Power-On default)"
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.It Li "1" Ta "Pentium-II diode"
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.It Li "2" Ta "2N3904 Bipolar"
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.It Li "4" Ta "Thermistor diode"
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.El
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.Sh SEE ALSO
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.Xr envsys 4 ,
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.Xr wbsio 4 ,
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.Xr envstat 8
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.Sh HISTORY
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The
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.Nm
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device appeared in
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.Nx 1.5 .
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.Sh BUGS
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Interrupt support is unimplemented.
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.Pp
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There are currently no known pnpbios IDs assigned to LM chips.
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