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gpio: etraxfs: add interrupt support

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On ETRAX FS, all pins on the first port (and only the first port) have
interrupt support.

On ARTPEC-3, all pins on all ports have interrupt support.  However,
there are only eight interrupts.  Each of the interrupts is associated
with a group of pins and for each interrupt the one pin from the group
which will trigger it can be selected.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Rabin Vincent
2015-07-31 14:48:57 +02:00
committed by Linus Walleij
parent 8b67a1f0ad
commit 29b5357d25
2 changed files with 253 additions and 7 deletions
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drivers/gpio/Kconfig
+1
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@@ -171,6 +171,7 @@ config GPIO_ETRAXFS
depends on CRIS || COMPILE_TEST
depends on OF
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.