staging: fieldbus: anybus-s: support the Arcx anybus controller

Add a driver for the Arcx anybus controller.

This device implements two Anybus-S hosts (buses),
and connects to the SoC via a parallel memory bus.
There is also a CAN power readout, unrelated to the Anybus,
modelled as a regulator.
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fieldbus/Makefile

@@ -5,4 +5,3 @@
 
 obj-$(CONFIG_FIELDBUS_DEV)	+= fieldbus_dev.o anybuss/
 fieldbus_dev-y			:= dev_core.o
-

drivers/staging/fieldbus/anybuss/Kconfig

@@ -7,3 +7,17 @@ config HMS_ANYBUSS_BUS
 	  You can attach a single Anybus-S compatible card to it, which
 	  typically provides fieldbus and industrial ethernet
 	  functionality.
+
+if HMS_ANYBUSS_BUS
+
+config ARCX_ANYBUS_CONTROLLER
+	tristate "Arcx Anybus-S Controller"
+	depends on OF && GPIOLIB && HAS_IOMEM && REGULATOR
+	help
+	  Select this to get support for the Arcx Anybus controller.
+	  It connects to the SoC via a parallel memory bus, and
+	  embeds up to two Anybus-S buses (slots).
+	  There is also a CAN power readout, unrelated to the Anybus,
+	  modelled as a regulator.
+
+endif

drivers/staging/fieldbus/anybuss/Makefile

@@ -5,3 +5,5 @@
 
 obj-$(CONFIG_HMS_ANYBUSS_BUS)	+= anybuss_core.o
 anybuss_core-y			+= host.o
+
+obj-$(CONFIG_ARCX_ANYBUS_CONTROLLER) += arcx-anybus.o