From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: Re: [i2c] [PATCH] Convert i2c-mpc from a platform driver to an
	of_platform one
Date: Sun, 29 Jun 2008 19:51:14 -0700
Message-ID: <200806291951.14465.david-b@pacbell.net>
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	<20080629065812.GO13876@secretlab.ca>
	<20080629091725.291974e9@hyperion.delvare>
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To: Jean Delvare <khali@linux-fr.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>, linuxppc-dev list <Linuxppc-dev@ozlabs.org>, Timur Tabi <timur@freescale.com>, Linux I2C <i2c@lm-sensors.org>
List-Id: linux-i2c@vger.kernel.org

On Sunday 29 June 2008, Jean Delvare wrote:
> =

> > After the i2c adapter registers itself, of_register_i2c_devices() is ca=
lled
> > which walks through the child nodes of the i2c adapter node in the devi=
ce
> > tree. =A0Each child node is an i2c device, and it immediately get
> > registered with the adapter. =A0Because this ensures that i2c device
> > registration always happens after adapter registration, and since the
> > pointer to the i2c_adapter is known, then i2c_new_device() can be used
> > directly without ever needing to know the bus number.
> =

> Ah, OK. If you use i2c_new_device() then it's alright.

Right.  Conceptually the way that the i2c core uses "numbered"
adapters and registered board_info could be viewed as a way to
let platforms avoid tracking that stuff themselves.  Since
the of_* framework is already tracking that, there's no big win
in trying to have i2c-core track that too, on its behalf.

- Dave