linux-kernel - Re: [PATCH v4 4/5] ARM: mediatek: Add EINT support to MTK pinctrl driver.

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Message-ID: <CACRpkda4dqY4uMmCz_uFB_n50A3OpSBr4p1g0sZ8Kty5Ou+gkg@mail.gmail.com>
Date:	Mon, 19 Jan 2015 11:35:47 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Grant Likely <grant.likely@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Vladimir Murzin <vladimir.murzin@....com>,
	maoguang.meng@...iatek.com, Russell King <linux@....linux.org.uk>,
	srv_heupstream@...iatek.com, Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Hongzhou Yang <hongzhou.yang@...iatek.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	alan.cheng@...iatek.com, toby.liu@...iatek.com,
	Sascha Hauer <kernel@...gutronix.de>,
	Kumar Gala <galak@...eaurora.org>, dandan.he@...iatek.com,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 4/5] ARM: mediatek: Add EINT support to MTK pinctrl driver.

On Fri, Jan 16, 2015 at 3:50 AM, Yingjoe Chen <yingjoe.chen@...iatek.com> wrote:
> On Thu, 2015-01-15 at 18:30 +0100, Linus Walleij wrote:

>> But the EINT is not a hardware number is it?
>
> It is a hardware number. eg, to mask irq for the gpio 0 above, we have
> to set bit49 in EINT mask_set register. When this irq triggered, it is
> reported using EINT status register bit49.

OK I get it (finally) then you should indeed use the irqdomain for it...
It's just a bit confusing that it begins at offset 49...

Yours,
Linus Walleij
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