linux-kernel - Re: Could I (ab)use bus (struct bus

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Date:	Thu, 14 Apr 2011 15:07:41 +0200
From:	Rafał Miłecki <zajec5@...il.com>
To:	Hauke Mehrtens <hauke@...ke-m.de>,
	Russell King <rmk@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>
Cc:	George Kashperko <george@...u.edu.ua>,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Arend van Spriel <arend@...adcom.com>,
	Jonas Gorski <jonas.gorski@...il.com>,
	b43-dev@...ts.infradead.org, Greg KH <greg@...ah.com>,
	Andy Botting <andy@...ybotting.com>,
	Larry Finger <Larry.Finger@...inger.net>
Subject: Re: Could I (ab)use bus (struct bus_type) for virtual Broadcom bus?

W dniu 14 kwietnia 2011 14:34 użytkownik Hauke Mehrtens
<hauke@...ke-m.de> napisał:
> On 04/14/2011 02:04 PM, Rafał Miłecki wrote:
>> Hauke: you were proposing integrating with drivers/amba. I really
>> expect you to comment on this, please tell us how do you see this now,
>> when we have better overview. I took your proposal seriously, you can
>> see the results above.
>
> I had no closer look at drivers/amba and this bus driver, I just saw
> that there was a discussion about drivers/amba and this implementation
> with no result. When the Bradcom cores are not directly connected to
> AMBA, but are using some sort of wrapper and there are no benefits in
> using drivers/amba, just leave it.
>
> As the implementation of the Braodcom AIX Bus contains some Broadcom
> extensions and there seams to be no normal AMBA device being connected
> to some Broadcom devices with this special interface number 3) "Broadcom
> specific bus (bcmai)" seams to the the best approach in my opinion.

Thanks for commenting.

Russell: you were asking:
> What does this do which the 'amba' bus support doesn't?
I believe I explained it well in this thread. Do you still think about
using amba/driver? Do you think we should use it?

Arnd: I found you saying:
> I believe the one thing we really want from this driver is the bus
> scan code, which is not present in the amba bus implementation,
I explained how it works, I believe scanning (EPROM in this case) it
Broadcom specific, not really AMBA standard. How do you see it?

-- 
Rafał
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