linux-kernel - Re: [PATCH 2/4] pinctrl: sunxi: Add external interrupts support

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Message-ID: <CACRpkdbDNSGSH-Y9_P4Bfpt3HhW0JBE7OWZt7of83=oLv_op7g@mail.gmail.com>
Date:	Mon, 10 Jun 2013 15:54:20 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Emilio Lopez <emilio@...pez.com.ar>, kevin@...winnertech.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	linux-sunxi@...glegroups.com
Subject: Re: [PATCH 2/4] pinctrl: sunxi: Add external interrupts support

On Sat, Jun 8, 2013 at 12:05 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:

> The port controller IP found in the Allwinner A10 and A13 can use few of
> the pins it manage as an interrupt source, called external interrupts in
> the datasheet.
>
> The number of these external interrupts are SoCs specific, but the
> current upper limit is 32. In order to work, the external interrupts'
> pins have to be muxed to a specific function to generate an interrupt.
>
> This patch adds the irqchip and the needed logic to use the PIO
> controller as an interrupt controller.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Pretty complicated but I think I understand it at last...

Patch applied.

Yours,
Linus Walleij
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