pinctrl: sunxi: Add common sun5i pinctrl driver

The sun5i SoCs (A10s, A13, GR8) are all based on the same die fit in
different packages. Hence, the pins and functions available are just the
based on the same set, each SoC having a different subset.

Introduce a common pinctrl driver that supports multiple variants to allow
to put as much as we can in common.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sunxi/Kconfig

@@ -9,6 +9,9 @@ config PINCTRL_SUN4I_A10
 	def_bool MACH_SUN4I
 	select PINCTRL_SUNXI
 
+config PINCTRL_SUN5I
+	select PINCTRL_SUNXI
+
 config PINCTRL_SUN5I_A10S
 	def_bool MACH_SUN5I
 	select PINCTRL_SUNXI

drivers/pinctrl/sunxi/Makefile

@@ -3,6 +3,7 @@ obj-y					+= pinctrl-sunxi.o
 
 # SoC Drivers
 obj-$(CONFIG_PINCTRL_SUN4I_A10)		+= pinctrl-sun4i-a10.o
+obj-$(CONFIG_PINCTRL_SUN5I)		+= pinctrl-sun5i.o
 obj-$(CONFIG_PINCTRL_SUN5I_A10S)	+= pinctrl-sun5i-a10s.o
 obj-$(CONFIG_PINCTRL_SUN5I_A13)		+= pinctrl-sun5i-a13.o
 obj-$(CONFIG_PINCTRL_GR8)		+= pinctrl-gr8.o

drivers/pinctrl/sunxi/pinctrl-sunxi.h

@@ -82,6 +82,10 @@
 #define SUN4I_FUNC_INPUT	0
 #define SUN4I_FUNC_IRQ		6
 
+#define PINCTRL_SUN5I_A10S	BIT(1)
+#define PINCTRL_SUN5I_A13	BIT(2)
+#define PINCTRL_SUN5I_GR8	BIT(3)
+
 struct sunxi_desc_function {
 	unsigned long	variant;
 	const char	*name;