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

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>

1 files changed, 6 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 0ba80b692723..f043e957698d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -240,6 +240,12 @@ L:	lm-sensors@lm-sensors.org
 S:      Maintained
 F:      drivers/hwmon/abituguru3.c
 
+ACCES 104-DIO-48E GPIO DRIVER
+M:      William Breathitt Gray <vilhelm.gray@gmail.com>
+L:      linux-gpio@vger.kernel.org
+S:      Maintained
+F:      drivers/gpio/gpio-104-dio-48e.c
+
 ACCES 104-IDI-48 GPIO DRIVER
 M:      "William Breathitt Gray" <vilhelm.gray@gmail.com>
 L:      linux-gpio@vger.kernel.org