linux-kernel - Re: [PATCH] drivers: create a pin control subsystem v8

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Message-ID: <CACRpkdZxxLdJQEkG--5Uf8DX+-00yOecb_NMpf0QSpP8u5hR4w@mail.gmail.com>
Date:	Fri, 30 Sep 2011 19:20:56 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	Linus Walleij <linus.walleij@...ricsson.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dia.com>,
	Barry Song <21cnbao@...il.com>,
	Lee Jones <lee.jones@...aro.org>,
	Joe Perches <joe@...ches.com>,
	Russell King <linux@....linux.org.uk>,
	Linaro Dev <linaro-dev@...ts.linaro.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	David Brown <davidb@...eaurora.org>,
	Stijn Devriendt <highguy@...il.com>
Subject: Re: [PATCH] drivers: create a pin control subsystem v8

On Fri, Sep 30, 2011 at 7:07 PM, Grant Likely <grant.likely@...retlab.ca> wrote:

> [Me]
>> That is not the reason it's there actually, what we have
>> discussed on the mailing list is getting sysfs entries for the same
>> reason gpiolib registers a class: handle pin control from userspace,
>>(...)
>
> Sure, but you don't need the bus yet.  It can be added when it is
> actually needed.  I'm not convinced that the sysfs approach is
> actually the right interface here (I'm certainly not a fan of the gpio
> sysfs i/f), and I'd rather not be putting in unneeded stuff until the
> userspace i/f is hammered out.

OK I buy that, I will post a v9 without bus...

Thanks!
Linus Walleij
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