gpio: Add GPIO support for the Diamond Systems GPIO-MM

The Diamond Systems GPIO-MM device features 48 lines of digital I/O via
the emulation of dual 82C55A PPI chips. This driver provides GPIO
support for these 48 channels of digital I/O. The base port addresses
for the devices may be configured via the base array module parameter.

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

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 591f692dae63..825cf3c3d579 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -558,6 +558,19 @@ config GPIO_F7188X
           To compile this driver as a module, choose M here: the module will
           be called f7188x-gpio.
 
+config GPIO_GPIO_MM
+        tristate "Diamond Systems GPIO-MM GPIO support"
+        depends on ISA_BUS_API
+        help
+          Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
+
+          The Diamond Systems GPIO-MM device features 48 lines of digital I/O
+          via the emulation of dual 82C55A PPI chips. This driver provides GPIO
+          support for these 48 channels of digital I/O.
+
+          The base port addresses for the devices may be configured via the base
+          array module parameter.
+
 config GPIO_IT87
         tristate "IT87xx GPIO support"
         help