From mboxrd@z Thu Jan  1 00:00:00 1970
From: r.marek@sh.cvut.cz (Rudolf Marek)
Date: Thu, 19 May 2005 06:25:56 +0000
Subject: userspace  dev-interface linux-2.6.7
Message-Id: <4278AE99.7050506@sh.cvut.cz>
List-Id: <lm-sensors.vger.kernel.org>
References: <42775670.5070709@inf.ed.ac.uk>
In-Reply-To: <42775670.5070709@inf.ed.ac.uk>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: lm-sensors@vger.kernel.org

Nils Roeder wrote:
> hi
> 
> i use a userspace program to access /dev/i2c-0 which
> uses (/doc/dev-interface)
> #include <linux/i2c.h>
> #include <linux/i2c-dev.h>
> which works fine in linux-2.4.x
> 
> 'porting' this to linux-2.6.7 causes too many errors.
> can anyone point me to the right direction so solve these ?
> (i realised in 2.6.7 the smbus macros are missing in i2c-dev.h
> so i am basically a bit lost...)

Yes plz read further.

> a more interesting question (for me at least) is -
> do i actually need to do that.
> just today (i must admit) i tried lmsensors for the first time,
> crosscompiled 'i2cdetect' and realised it can find all my devices
> attached to /dev/i2c-0.
> so, can i read and write to the devices found by i2cdetect
> (e.g 0x4b on /dev/i2c-0)
> using kernel drivers rather than my userspace program,
> if so how (or where can i read about it) 

Have you read linux-2.6.XXXX/Documentation/i2c ?

There is file called dev-interface, that should help you.
If you have any more questions, just write again.

Regards

Rudolf