linux-kernel - Re: [PATCH 0/6 v10] gpio: Add block GPIO

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Date:	Fri, 07 Dec 2012 13:16:33 +0100
From:	Roland Stigge <stigge@...com.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	gregkh@...uxfoundation.org, grant.likely@...retlab.ca,
	linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, w.sang@...gutronix.de,
	jbe@...gutronix.de, plagnioj@...osoft.com, highguy@...il.com,
	broonie@...nsource.wolfsonmicro.com, daniel-gl@....net,
	rmallon@...il.com, tru@...k-microwave.de, sr@...x.de,
	wg@...ndegger.com
Subject: Re: [PATCH 0/6 v10] gpio: Add block GPIO

On 12/07/2012 01:06 PM, Roland Stigge wrote:
> On 12/07/2012 11:36 AM, Alan Cox wrote:
>>> * Device interface for userland access (alternative to sysfs)
>>
>> Currently we can set different permissions on different GPIO lines. Your
>> driver change drives a truck through this facility.

What I maybe misread in your concern: The dev interface is actually an
"alternative to sysfs for block GPIO", not considered as a replacement
for the current sysfs interface for _single_ GPIOs.

The fate of the latter one can be discussed separately.

Also, the sysfs interface for block GPIO can be left out of my patch
series, if necessary.

Roland
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