Re: Q re /proc/bus/i2c

[J. Ryan Earl]

Martin Schlemmer wrote:

> On Sat, 2004-01-10 at 13:58, J. Ryan Earl wrote:
>  
>
> > > A couple questions:
> > >
> > > 1) Have you installed the lm-sensors package?
> > > 2) What kernel version?
> > >
> > > Even with 2.6, you need to install the lm-sensors package, but not the 
> > > i2c package as the kernel already has everything needed in it.  The 
> > > lm-sensors packages contains drivers for all the sensor chips.  After 
> > > you get lm-sensors installed on your current kernel, run sensors-detect 
> > > to get the proper modules loaded for your hardware.
> > >
> > >      
>
> Uhm, AFIAK, you should _NOT_ install the drivers from the lm-sensors
> package, but use those in the kernel.  Check the docs, they explicitly
> say that you should only do:
>
>  # make user user_install
>
> if you have 2.6 kernel.  Further, you do not _need_ lm-sensors package,
> as if you only want to check/monitor one setting, you can get it from
> /sys, and if you use gkrellm, it do not even use libsensors anymore
> (and thus works without, as it have since 2.6 support, before even
> libsensors was ported to understand sysfs) ...
>  
It still uses devfs I think.  Or you can just run the mkdev.sh command 
to create the proper devices.

This is from installing lm-sensors:

* *****************************************************************
*
* This ebuild assumes your /usr/src/linux kernel is the one you
* used to build i2c-2.8.2.
*
* For 2.5+ series kernels, use the support already in the kernel
* under 'Character devices' -> 'I2C support' and then merge this
* ebuild.
*
* To cross-compile, 'export LINUX="/lib/modules/<version>/build"'
* or symlink /usr/src/linux to another kernel.
*
* *****************************************************************

You always need the lm-sensors package, period--it has all the user land 
utilities plus drivers for most of the chips/sensors.  You only need the 
i2c package on earlier kernels, use built in for 2.6.  On my Asus 
boards, I use the asb100 module which is not in the kernel.  `find 
/usr/src/linux -name asb100* -print`  Not there.  Remember, you'll have 
to recompile the lm-sensors package everytime you upgrade you change 
your kernel.

-ryan

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/