IOCTL implementation in i2c Hostt/master controllers

IOCTL implementation in i2c Hostt/master controllers

[vidhumouli hunsigida]

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Hi all,

I am a new joinee in this group. I am trying to understand how the ioctl call flow happens in the i2c driver in Linux.

I mean the flow from ioctl in application to lowerlest level of driver call?

Thanks alot in advace.

-Vidhumouli


      

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Re: IOCTL implementation in i2c Hostt/master controllers

[vidhumouli hunsigida]

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I forgot to ask the question.....

Can any one give me a poointer to any link/document from where I can understand the flow correctly?

Thanks.

 


----- Original Message ----
From: vidhumouli hunsigida <hv_mouli-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>
To: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
Sent: Tuesday, September 2, 2008 10:51:51 AM
Subject: [i2c] IOCTL implementation in i2c Hostt/master controllers


Hi all,

I am a new joinee in this group. I am trying to understand how the ioctl call flow happens in the i2c driver in Linux.

I mean the flow from ioctl in application to lowerlest level of driver call?

Thanks alot in advace.

-Vidhumouli



      

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Re: IOCTL implementation in i2c Hostt/master controllers

[Jean Delvare]

Hi Vidhumouli,

On Mon, 1 Sep 2008 22:30:10 -0700 (PDT), vidhumouli hunsigida wrote:
> I forgot to ask the question.....
> 
> Can any one give me a poointer to any link/document from where
> I can understand the flow correctly?

The only document we have is Documentation/i2c/dev-interface in the
kernel source tree:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=Documentation/i2c/dev-interface

However it describes the API to /dev/i2c-N, not the flow from your
application to the I2C bus driver. For that, maybe the best we have is
this picture:
http://www.lm-sensors.org/attachment/wiki/Documentation/layers.gif
But it's not necessarily very clear.

(And it shouldn't be on the lm-sensors.org wiki, but that's another
story.)

-- 
Jean Delvare

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