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gpio: Add IRQ support to ACCES 104-IDIO-16 driver

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The ACCES 104-IDIO-16 series offers Change-of-State detection interrupt
functionality; if Change-of-State detection is enabled, an interrupt is
fired off if any input line changes state (i.e. goes from low to high,
or from high to low). This patch adds support to handle these interrupts
and allows the user to mask which GPIO lines are affected. The interrupt
line number for the device may be set via the idio_16_irq module
parameter.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
William Breathitt Gray
2015-11-03 07:54:23 -05:00
committed by Linus Walleij
parent 58383c7842
commit a11841477a
2 changed files with 116 additions and 2 deletions
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6
drivers/gpio/Kconfig
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@@ -496,8 +496,12 @@ menu "Port-mapped I/O GPIO drivers"
config GPIO_104_IDIO_16
tristate "ACCES 104-IDIO-16 GPIO support"
select GPIOLIB_IRQCHIP
help
Enables GPIO support for the ACCES 104-IDIO-16 family.
Enables GPIO support for the ACCES 104-IDIO-16 family. The base port
address for the device may be set via the idio_16_base module
parameter. The interrupt line number for the device may be set via the
idio_16_irq module parameter.
config GPIO_F7188X
tristate "F71869, F71869A, F71882FG and F71889F GPIO support"