linux-kernel - Re: [PATCH v3 7/7] ARM: sunxi: update the default ARCH_NR

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Date:	Wed, 23 Apr 2014 15:54:35 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>, Alexandre Courbot <gnurou@...il.com>
Cc:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Emilio López <emilio@...pez.com.ar>,
	Mike Turquette <mturquette@...aro.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Shuge <shuge@...winnertech.com>, kevin@...winnertech.com,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	dev@...ux-sunxi.org, "arm@...nel.org" <arm@...nel.org>
Subject: Re: [PATCH v3 7/7] ARM: sunxi: update the default ARCH_NR_GPIO for
 sunxi arch

On Tue, Apr 22, 2014 at 4:20 PM, Arnd Bergmann <arnd@...db.de> wrote:

>> Patch applied, and grrrr we need to get rid of these static #gpios defines
>> in the long run.
>
> Yes, that would be nice. I guess the gpio-descriptor framework should
> have solved this, but we can't move everything over to that soon, right?

Not really, it has to happen platform by platform.

I did consider putting all the GPIO descriptors into a radix and
use that internally in gpiolib, but that wasn't easy to do
when I tried it, maybe I just thought backwards.

I would appreciate if drivers for new archs like arm64 would
use only GPIO descriptors from day one. Also if new drivers
only apply a an entirely new machine even. They should just
use descriptors.

Yours,
Linus Walleij
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