Input: add PCF8574 I2C keypad input device driver

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 23140a3..54a9c2d 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -277,6 +277,16 @@
 	 Say Y to include support for delivering  PMU events via  input
 	 layer on NXP PCF50633.
 
+config INPUT_PCF8574
+	tristate "PCF8574 Keypad input device"
+	depends on I2C && EXPERIMENTAL
+	help
+	  Say Y here if you want to support a keypad connetced via I2C
+	  with a PCF8574.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pcf8574_keypad.
+
 config INPUT_GPIO_ROTARY_ENCODER
 	tristate "Rotary encoders connected to GPIO pins"
 	depends on GPIOLIB && GENERIC_GPIO