linux-kernel - Re: [PATCH] Driver/IFC: Move Freescale IFC driver to a common driver

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Message-ID: <1389648261.24905.82.camel@snotra.buserror.net>
Date:	Mon, 13 Jan 2014 15:24:21 -0600
From:	Scott Wood <scottwood@...escale.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Prabhakar Kushwaha <prabhakar@...escale.com>,
	<gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Driver/IFC: Move Freescale IFC driver to a common driver

On Mon, 2014-01-13 at 22:22 +0100, Arnd Bergmann wrote:
> On Monday 13 January 2014, Scott Wood wrote:
> > On Mon, 2014-01-13 at 20:45 +0100, Arnd Bergmann wrote:
> > > On Monday 13 January 2014, Scott Wood wrote:
> > > > On Mon, 2014-01-13 at 14:32 +0100, Arnd Bergmann wrote:
> > > > > On Monday 13 January 2014, Prabhakar Kushwaha wrote:
> > > > > > Freescale IFC controller has been used for mpc8xxx. It will be used
> > > > > > for ARM-based SoC as well. This patch moves the driver to driver/misc
> > > > > > and fix the header file includes.
> > > > > > 
> > > > > > Signed-off-by: Prabhakar Kushwaha <prabhakar@...escale.com>
> > > > > 
> > > > > No objections to the driver, but drivers/misc doesn't seem like the
> > > > > right place. Why not drivers/mfd or drivers/memory?
> > > > 
> > > > It's not a memory controller in the sense that I think most people would
> > > > interpret the phrase, but I guess it's similar in function to
> > > > mvebu-devbus.  If drivers/memory is broad enough to cover such things,
> > > > and doesn't have a memory controller subsystem that drivers are supposed
> > > > to register with, then that could work.
> > > > 
> > > > Are things in drivers/mfd expected to interact with mfd-core.c?  It's
> > > > not clear to me what that does or how it would be useful to the IFC
> > > > code.
> > > 
> > > Sorry, I meant mtd not mfd. mtd would make sense if the only devices
> > > behind it are things like flash or sram memory.
> > 
> > Some of the things behind it are flash, but those portions of the driver
> > are already in drivers/mtd.  This is just the common code.
> > 
> 
> What are the things that are not flash then?

FPGAs or any other random things that might get connected to it on a
custom board.

-Scott


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