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The Moxa Art interrupt controller is very very likely just an instance
of the Faraday FTINTC010 interrupt controller from Faraday Technology.
An indication would be its close association with the FA526 ARM core
and the fact that the register layout is the same.
The implementation in irq-moxart.c can probably be right off replaced
with the irq-ftintc010.c driver by adding a compatible string, selecting
this irqchip from the machine and run.
As a bonus we have an irqchip driver supporting high/low and
rising/falling edges for the Moxa Art, and shared code with the Gemini
platform.
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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The triggers in the driver were right for high level triggered
IRQs but the edge detection on edge triggered IRQs was wrong.
After studying a proper driver from Po-Yu Chuang I now know how
to handle these right, and we can properly implement low level
IRQs as well.
The device trees for the Gemini had polarity switched around
so these have been fixed to conform to the right polarity as
well.
Cc: Greentime Hu <green.hu@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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The Gemini irqchip turns out to be a standard IP component from
Faraday Technology named FTINTC010 after some research and new
information.
- Rename the driver and all symbols to reflect the new information.
- Add the new compatible string "faraday,ftintc010"
- Create a Kconfig symbol CONFIG_FARADAY_FTINTC010 so that SoCs
using this interrupt controller can easily select and reuse it
instead of hardwiring it to ARCH_GEMINI
I have created a separate patch to select the new Kconfig symbol
from the Gemini machine, which will be merged through the ARM
SoC tree.
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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