pinctrl: bcm2835: Fix ints for GPIOs 28-31 & 46-53

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Contrary to the documentation, the BCM2835 GPIO controller actually
has four interrupt lines - one each for the three IRQ groups and one
common. Confusingly, the GPIO interrupt groups don't correspond
directly with the GPIO control banks. Instead, GPIOs 0-27 generate IRQ
GPIO0, 28-45 IRQ GPIO1 and 46-53 IRQ GPIO2.

Awkwardly, the GPIOs for IRQ GPIO1 straddle two 32-entry GPIO banks,
so split out a function to process the interrupts for a single GPIO
bank.

Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

...

This commit is contained in:

Phil Elwell 2015-02-24 13:40:50 +00:00 • committed by Linus Walleij

parent dd68a526c7

commit 00445b5d58

1 changed files with 38 additions and 12 deletions

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drivers/pinctrl/bcm/pinctrl-bcm2835.c

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