linux-kernel - Re: Ang: Re: [PATCH 0/2] Setting GPIOs simultaneously

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Date:	Wed, 15 Jul 2009 02:09:31 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Cc:	dbrownell@...rs.sourceforge.net, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: Ang: Re: [PATCH 0/2] Setting GPIOs simultaneously

On Tue, Jul 14, 2009 at 11:20:13PM +0200, Joakim Tjernlund wrote:
[...]
> >But any users of the legacy bindings should be in-tree.
> 
> ehh, it was working until you made it OF only. Why do call the native
> way legacy?  It is the method all non OF arch uses.

It's legacy because there are no in-tree users anymore. Nowadays
we're trying to pass all needed information via OF, and we're
trying to avoid ugly platform-dependant hacks. Your SPI scheme
can be easily described via OF, but sure, it's hard to implement
it with the current SPI/OF subsystem.

[...]
> >http://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg34738.html
> >^^^ I'm dreaming about this framework. I.e. true addressing
> >    for chip-selects. :-)
> 
> This is probably needed to support most SPI users out there, but until
> such framework is in place I think the native methods need to stay, right?

I'm not the right person to ask. I can only express my opinions.
The maintainer make final decision.

But if you ask for my opinion, I don't think that they should stay
unless we'll see a user in the mainline.

> As is now, SPI has regressed w.r.t earlier releases.

Yes and no. Yes, it has "regressed" for out-of-tree code, and no,
I don't feel sorry about that. :-)

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
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