From: David Brownell <david-b@pacbell.net>
To: Mike Frysinger <vapier.adi@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] gpio sysfs: add a "toggle" value
Date: Thu, 4 Jun 2009 02:48:07 -0700 [thread overview]
Message-ID: <200906040248.07922.david-b@pacbell.net> (raw)
In-Reply-To: <8bd0f97a0906040220k6f56b944n733a2b3469faaccb@mail.gmail.com>
On Thursday 04 June 2009, Mike Frysinger wrote:
> > I don't like the idea of embedding any kind of interpreter
> > in the sysfs interface, but that's the direction you seem
> > to be heading ...
>
> i dont view the userspace GPIO interface as a simple "i want to wiggle
> pins for fun and testing". i see it as a dynamic method for building
> userspace drivers for simple devices.
I don't. I see it as an adjunct to real drivers. Or maybe
we just differ on what "simple" means here.
> as such, having a very simple
> "command language" for optimizing the interaction provides a pretty
> good trade off between kernel complexity and lowering overhead imo.
If that's what you want, why don't you write a custom driver
that provides the kind of command interpreter you want?
next prev parent reply other threads:[~2009-06-04 9:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-03 8:16 [PATCH] gpio sysfs: add a "toggle" value Mike Frysinger
2009-06-04 7:54 ` Andrew Morton
2009-06-04 8:16 ` Mike Frysinger
2009-06-04 8:27 ` David Brownell
2009-06-04 8:52 ` Mike Frysinger
2009-06-04 9:05 ` Andrew Morton
2009-06-04 9:06 ` David Brownell
2009-06-04 9:09 ` Mike Frysinger
2009-06-04 9:15 ` David Brownell
2009-06-04 9:20 ` Mike Frysinger
2009-06-04 9:48 ` David Brownell [this message]
2009-06-04 10:06 ` Mike Frysinger
2009-06-04 8:36 ` Andrew Morton
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