80 lines
2.7 KiB
Groff
80 lines
2.7 KiB
Groff
|
.\" Copyright (c) 2015 Michael Gmelin <freebsd@grem.de>
|
||
|
|
.\" All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" 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 AUTHOR 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 AUTHOR 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.
|
||
|
|
.\"
|
||
|
|
.\" $FreeBSD$
|
||
|
|
.\"
|
||
|
|
.Dd May 30, 2015
|
||
|
|
.Dt IG4 4
|
||
|
|
.Os
|
||
|
|
.Sh NAME
|
||
|
|
.Nm ig4
|
||
|
|
.Nd Intel(R) fourth generation mobile CPU integrated I2C SMBus driver
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
To compile this driver into the kernel, place the following lines into
|
||
|
|
the kernel configuration file:
|
||
|
|
.Bd -ragged -offset indent
|
||
|
|
.Cd "device ig4"
|
||
|
|
.Cd "device smbus"
|
||
|
|
.Ed
|
||
|
|
.Pp
|
||
|
|
Alternatively, to load the driver as a module at boot time, place the following line in
|
||
|
|
.Xr loader.conf 5 :
|
||
|
|
.Bd -literal -offset indent
|
||
|
|
ig4_load="YES"
|
||
|
|
.Ed
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
driver provides access to peripherals attached to an I2C SMB controller.
|
||
|
|
.Nm
|
||
|
|
supports the SMBus controller found in fourth generation Intel(R) Core(TM)
|
||
|
|
processors based on the mobile U-processor line for intelligent systems.
|
||
|
|
This includes the i7-4650U, i5-4300U, i3-4010U, and 2980U.
|
||
|
|
.Sh SYSCTL VARIABLES
|
||
|
|
These
|
||
|
|
.Xr sysctl 8
|
||
|
|
variables are available:
|
||
|
|
.Bl -tag -width "debug.ig4_dump"
|
||
|
|
.It Va debug.ig4_dump
|
||
|
|
Setting this to a non-zero value dumps controller registers to console and
|
||
|
|
syslog once.
|
||
|
|
The sysctl resets to zero immediately.
|
||
|
|
.El
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr smb 4 ,
|
||
|
|
.Xr smbus 4
|
||
|
|
.Sh AUTHORS
|
||
|
|
.An -nosplit
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
driver was written for DragonFly BSD by
|
||
|
|
.An Matthew Dillon
|
||
|
|
and subsequently ported to
|
||
|
|
.Fx
|
||
|
|
by
|
||
|
|
.An Michael Gmelin Aq Mt freebsd@grem.de .
|
||
|
|
.Pp
|
||
|
|
This manual page was written by
|
||
|
|
.An Michael Gmelin Aq Mt freebsd@grem.de .
|