linux-kernel - Re: [PATCH][Fix] New Unified AVR32/AT91 MCI Driver that supports both MCI slots used at the same time

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Date:	Mon, 15 Jun 2009 16:51:18 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
CC:	Rob Emanuele <poorarm@...reis.com>,
	Andrew Victor <avictor.za@...il.com>,
	Joey Oravec <joravec@...wtech.com>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org, drzeus-mmc@...eus.cx
Subject: Re: [PATCH][Fix] New Unified AVR32/AT91 MCI Driver that supports
 both 	MCI slots used at the same time

Haavard Skinnemoen :
> Nicolas Ferre wrote:
>>> Well, what is the best way to differentiate it from the at91_mci
>>> driver and keep users from trying to use both drivers?  
>> I propose that we setup a kind of choice sub menu in the Kconfig for
>> those two drivers when they are both supported.
> 
> Shouldn't it be enough to simply add
> 
> 	depends on !THE_OTHER_DRIVER
> 
> to both of them?

It does not seems to work...

> Btw, what are the long-term plans for this? Should the at91_mci driver
> be phased out once the atmel-mci driver supports all at91 and avr32
> devices?

In my opinion, it is a bit early to tell. My thoughts were that I
suspect we should keep at91_mci for at91rm9200 and at91sam9261/9261s as
they contain an older revision of the MCI IP. In the meantime, Rob tend
to integrate also code to manage those chips (without RDPROOF/WRPROOF
switch).

So, lets see how far we can go with the atmel-mci on at91 chips and
then, consider a phase out.

Regards,
-- 
Nicolas Ferre

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