linux-kernel - Re: i2c: introduce i2c helper i2c_find_client_by

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Date:	Fri, 12 Jul 2013 13:02:56 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	Andy Shevchenko <andy.shevchenko@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Bin Gao <bin.gao@...ux.intel.com>, linux-i2c@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: i2c: introduce i2c helper i2c_find_client_by_name()

On Friday 12 July 2013 12:00:47 Wolfram Sang wrote:
> > Briefly looking into ACPI tables we have and mechanisms that we can
> > use in ACPI case, I doubt we may apply all the ideas, probably some of
> > them, though I didn't get yet where to read about in details. What I
> > could say now is that the patch provided by Bin Gao is definitely no
> > go.
> 
> Laurent explained to me what V4L did and now does. It used to be the way
> tha V4L drivers did register I2C slaves according to platform_data. Now,
> with DT the slaves get instanciated earlier, so they now use notifiers
> to know when the slaves are in place. Something like this should
> probably be done here, too, instead of unregistering and re-registering.

This will be available in v3.11 in drivers/media/v4l2-core/v4l2-async.c.

-- 
Regards,

Laurent Pinchart

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