linux-kernel - Re: [PATCH 1/2] ARM: OMAP2+: move mailbox.h out of plat-omap headers

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Message-ID: <5090E515.9050407@st.com>
Date:	Wed, 31 Oct 2012 09:45:09 +0100
From:	Loic PALLARDY <loic.pallardy@...com>
To:	Omar Ramirez Luna <omar.luna@...aro.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Tony Lindgren <tony@...mide.com>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Juan Gutierrez <jgutierrez@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Felipe Contreras <felipe.contreras@...ia.com>,
	Suman Anna <s-anna@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 1/2] ARM: OMAP2+: move mailbox.h out of plat-omap headers


Hi Omar,

On 10/31/2012 08:22 AM, Omar Ramirez Luna wrote:
>
> As part of plat-omap code cleanup, I was planning to move omap-mailbox
> framework to a newly drivers/mailbox folder, right now this code is
> specific to OMAP platforms, but with some clean up it could be the
> base for a generic framework. And living under drivers/mailbox could
> give it some exposure for interested developers to give feedback and
> propose changes.
>
> In the past there was a mailbox-like driver in mach-ux500, I was
> hoping both could live under the same folder, however the platform
> using it, was dropped a couple of kernel releases back and with it the
> other similar mailbox implementation.

On STE side, we are working on a mailbox driver which will rely on 
mailbox framework.
However some modifications in current Omap mailbox framework are needed 
to fit STE HW specificities.
- API naming should be generic (replace omap prefix by mailbox)
- message type should be enhanced
- fifo mechanism is linked to Omap maibox, not needed in STE case since 
it relies on cross interrupt + shared memory
I already have modifications I'll send you to see how we can create a 
common and generic mailbox framework.

Regards
Loic--
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