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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> |
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.. | ||
Kconfig | ||
Makefile | ||
pinctrl-bcm281xx.c | ||
pinctrl-bcm2835.c | ||
pinctrl-cygnus-mux.c | ||
pinctrl-iproc-gpio.c | ||
pinctrl-ns2-mux.c | ||
pinctrl-nsp-gpio.c | ||
pinctrl-nsp-mux.c |