pinctrl: actions: Add Actions S900 pinctrl driver

Add pinctrl driver for Actions Semi S900 SoC. The driver supports
pinctrl, pinmux and pinconf functionalities through a range of registers
common to both gpio driver and pinctrl driver.

Pinmux functionality is available only for the pin groups while the
pinconf functionality is available for both pin groups and individual
pins.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -337,6 +337,7 @@ config PINCTRL_OCELOT
 	select GENERIC_PINMUX_FUNCTIONS
 	select REGMAP_MMIO
 
+source "drivers/pinctrl/actions/Kconfig"
 source "drivers/pinctrl/aspeed/Kconfig"
 source "drivers/pinctrl/bcm/Kconfig"
 source "drivers/pinctrl/berlin/Kconfig"

drivers/pinctrl/Makefile

@@ -43,6 +43,7 @@ obj-$(CONFIG_PINCTRL_INGENIC)	+= pinctrl-ingenic.o
 obj-$(CONFIG_PINCTRL_RK805)	+= pinctrl-rk805.o
 obj-$(CONFIG_PINCTRL_OCELOT)	+= pinctrl-ocelot.o
 
+obj-y				+= actions/
 obj-$(CONFIG_ARCH_ASPEED)	+= aspeed/
 obj-y				+= bcm/
 obj-$(CONFIG_PINCTRL_BERLIN)	+= berlin/

drivers/pinctrl/actions/Kconfig

@@ -0,0 +1,12 @@
+config PINCTRL_OWL
+	bool
+	depends on (ARCH_ACTIONS || COMPILE_TEST) && OF
+	select PINMUX
+	select PINCONF
+	select GENERIC_PINCONF
+
+config PINCTRL_S900
+	bool "Actions Semi S900 pinctrl driver"
+	select PINCTRL_OWL
+	help
+	  Say Y here to enable Actions Semi S900 pinctrl driver

drivers/pinctrl/actions/Makefile

@@ -0,0 +1,2 @@
+obj-$(CONFIG_PINCTRL_OWL)	+= pinctrl-owl.o
+obj-$(CONFIG_PINCTRL_S900) 	+= pinctrl-s900.o