linux-kernel - Re: [PATCH 04/16] ARM: imx: move platform

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Message-ID: <Pine.LNX.4.64.1209111624240.22084@axis700.grange>
Date:	Tue, 11 Sep 2012 16:31:35 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Arnd Bergmann <arnd@...db.de>
cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	Sascha Hauer <kernel@...gutronix.de>,
	Vinod Koul <vinod.koul@...el.com>, Dan Williams <djbw@...com>,
	"Ben Dooks (embedded platforms)" <ben-linux@...ff.org>,
	"Wolfram Sang (embedded platforms)" <w.sang@...gutronix.de>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Chris Ball <cjb@...top.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Alan Cox <alan@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <balbi@...com>,
	Alan Stern <stern@...land.harvard.edu>,
	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Javier Martin <javier.martin@...ta-silicon.com>,
	Shawn Guo <shawn.guo@...aro.org>
Subject: Re: [PATCH 04/16] ARM: imx: move platform_data definitions

On Tue, 11 Sep 2012, Arnd Bergmann wrote:

> On Tuesday 11 September 2012, Guennadi Liakhovetski wrote:
> > Hi Arnd
> > 
> > It probably wouldn't be very difficult to also include 
> > arch/arm/plat-mxc/include/mach/ipu.h in this your patch, but you can also 
> > leave it for later. Just to make sure it's not something that would make 
> > your future patching more complicated.
> > 
> 
> For now, I've done only the straight renames but left the ones that looked
> like they need more complex changes of any sort. Looking at ipu.h, it seems
> that this header file defines data that is used inside of the driver but not
> in the platform device definition, so we'd need to split it up and move
> the part that is only used inside of the driver into a different place.
> 
> Of course, I could alo be mistaken and not have realized that actually all
> of this file is platform data.

ipu.h is used by the dmaengine and IRQ driver under drivers/dma/ipu/, and 
by its users drivers/media/platform/soc_camera/mx3_camera.c and 
drivers/video/mx3fb.c. It has been placed under arch/arm/... because it's 
arch-specific, but in principle I don't see any reason why it cannot 
happily live anywhere under include/...

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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