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Message-ID: <1418807365.6443.17.camel@mtksdaap41>
Date: Wed, 17 Dec 2014 17:09:25 +0800
From: Yingjoe Chen <yingjoe.chen@...iatek.com>
To: Linus Walleij <linus.walleij@...aro.org>
CC: Rob Herring <robh+dt@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Mark Rutland <mark.rutland@....com>,
<devicetree@...r.kernel.org>,
Vladimir Murzin <vladimir.murzin@....com>,
Russell King <linux@....linux.org.uk>,
<srv_heupstream@...iatek.com>, Pawel Moll <pawel.moll@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Catalin Marinas <catalin.marinas@....com>,
<linux-kernel@...r.kernel.org>, <alan.cheng@...iatek.com>,
<maoguang.meng@...iatek.com>,
Ashwin Chaugule <ashwin.chaugule@...aro.org>,
<toby.liu@...iatek.com>, Sascha Hauer <kernel@...gutronix.de>,
Kumar Gala <galak@...eaurora.org>,
Grant Likely <grant.likely@...aro.org>,
<dandan.he@...iatek.com>, <linux-arm-kernel@...ts.infradead.org>,
Hongzhou Yang <hongzhou.yang@...iatek.com>
Subject: Re: [PATCH v4 4/5] ARM: mediatek: Add EINT support to MTK pinctrl
driver.
On Wed, 2014-12-17 at 07:34 +0800, Hongzhou Yang wrote:
> From: Maoguang Meng <maoguang.meng@...iatek.com>
>
> MTK SoC support external interrupt(EINT) from most SoC pins.
> Add EINT support to pinctrl driver.
>
> Signed-off-by: Maoguang Meng <maoguang.meng@...iatek.com>
> Signed-off-by: Hongzhou Yang <hongzhou.yang@...iatek.com>
Hi Linus,
This patch add EINT support to the pinctrl driver. We've surveyed
GPIOLIB_IRQCHIP, but we didn't use it because:
- Not every GPIO pin support interrupt.
- EINT use a different numbering to GPIO. eg, from the mt8135 table,
GPIO29 is EINT158. It is more nature & efficient to use EINT number as
hwirq.
+ MTK_EINT_FUNCTION(2, 158),
+ MTK_FUNCTION(0, "GPIO29"),
Joe.C
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