linux-kernel - RE: [PATCH v3 0/9] Convert OMAP GPMC to driver

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Date:	Thu, 26 Apr 2012 05:18:15 +0000
From:	"Mohammed, Afzal" <afzal@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	"Hilman, Kevin" <khilman@...com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"grinberg@...pulab.co.il" <grinberg@...pulab.co.il>,
	"mike@...pulab.co.il" <mike@...pulab.co.il>,
	"Menon, Nishanth" <nm@...com>,
	"artem.bityutskiy@...ux.intel.com" <artem.bityutskiy@...ux.intel.com>,
	"vimal.newwork@...il.com" <vimal.newwork@...il.com>,
	"dbaryshkov@...il.com" <dbaryshkov@...il.com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>
Subject: RE: [PATCH v3 0/9] Convert OMAP GPMC to driver

Hi Tony,

On Wed, Apr 25, 2012 at 22:14:25, Tony Lindgren wrote:
> > Once driver is acceptable, platform code for other peripherals
> > connected via GPMC would be adapted to make use of GPMC driver. And
> > then the board modifications. But before that HWMOD entry has to be
> > populated for respective SoC(s ?).
>  
> No, we can't do it this way, it breaks things. We need to first
> convert everything to use the new GPMC driver, then move it. 

Sorry, my statements were not clear, I meant once driver is
acceptable & still living in mach-omap2, platform code dealing
with peripherals on gpmc would be adapted to make use of gpmc
driver. Moving driver to new location is only planned as a
separate commit after, before mentioned changes. Hope with this
clarification we are on same track. 

>  
> > Now DESTINATION FOR THIS DRIVER has to be decided. Original plan was
> > to consider GPMC as MFD. The peripheral(s) connected to GPMC being
> > considered childs of MFD.
> 
> Let's not put it into MFD. This is a bus driver. But that
> decision can wait as we cleary have quite a few things to convert
> first under arch/arm/mach-omap2.
>  
> > Various options that could be seen so far on where this driver can go,
> > 1. mfd
> > 2. misc
> > 3. drivers/platform/arm/ (create an new one?)
> > 4. memory (create a new one ?)
> 
> It's a parallel bus driver, not memory not misc, not MFD.

Greg suggested to send gpmc driver to new memory folder.

In the next version, gpmc driver would still be in mach-omap2,
moving to new location can be done later.

Regards
Afzal
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