gpio: Add GPIO support for the ACCES 104-DIO-48E

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The ACCES 104-DIO-48E device provides 48 lines digital I/O via two
Programmable Peripheral Interface (PPI) chips of type 82C55. Bit C3 at
each 24-bit Group can be used as an external interrupt, triggered by a
rising edge.

This driver provides GPIO and IRQ support for these 48 channels of
digital I/O. The base port address for the device may be configured via
the dio_48e_base module parameter. The interrupt line number for the
device may be configured via the dio_48e_irq module parameter.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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William Breathitt Gray 2016-01-20 13:50:11 -05:00 • committed by Linus Walleij

parent 9c26df9b27

commit 1b06d64f73

4 changed files with 455 additions and 0 deletions

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6

MAINTAINERS

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9

drivers/gpio/Kconfig

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1

drivers/gpio/Makefile

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439

drivers/gpio/gpio-104-dio-48e.c

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