Messages in this thread | | | Subject | Re: [PATCH v4 4/5] ARM: mediatek: Add EINT support to MTK pinctrl driver. | From | Yingjoe Chen <> | Date | Wed, 17 Dec 2014 17:09:25 +0800 |
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On Wed, 2014-12-17 at 07:34 +0800, Hongzhou Yang wrote: > From: Maoguang Meng <maoguang.meng@mediatek.com> > > MTK SoC support external interrupt(EINT) from most SoC pins. > Add EINT support to pinctrl driver. > > Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com> > Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.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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