linux-kernel - Re: [RFC][PATCH 1/4] lcd: platform-lcd: Eliminate need for platform data

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Message-ID: <CAJuYYwSAsPYibZsgdHQzMba-wCymRxqqcmtZSZi7A_AzTJv5tg@mail.gmail.com>
Date:	Tue, 3 Jan 2012 13:56:58 +0530
From:	Thomas Abraham <thomas.abraham@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	rpurdie@...ys.net, linux-samsung-soc@...r.kernel.org,
	grant.likely@...retlab.ca, rob.herring@...xeda.com,
	kgene.kim@...sung.com, jg1.han@...sung.com,
	kyungmin.park@...sung.com, cbou@...l.ru, kwangwoo.lee@...il.com,
	augulis.darius@...il.com, ben-linux@...ff.org, patches@...aro.org
Subject: Re: [RFC][PATCH 1/4] lcd: platform-lcd: Eliminate need for platform data

On 2 January 2012 23:43, Mark Brown <broonie@...nsource.wolfsonmicro.com> wrote:
> On Mon, Jan 02, 2012 at 11:21:46PM +0530, Thomas Abraham wrote:
>
>> Your point on maintaining support for both old and new formats is
>> helpful. But I am not sure if maintaining support for both formats is
>> the right thing to do. As most of the ARM platforms will switch to
>> using dt, maybe converting all of them to new format would be better.
>> I will try doing this and prepare a patch.
>
> There's more architectures than ARM supported in Linux and only a
> minority of them are using device tree at the minute.  Unless every
> architecture switches over platform data based users will still need to
> be supported.

I will try to retain the old platform data style also since there are
support for lcd panels in mainline that use 2 or more gpios in a panel
specific way. And it would be difficult to fold them into a generic
lcd type for lcd power control.

Thanks,
Thomas.
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