pinctrl/abx500: add AB8500 sub-driver

This adds a subdriver for the AB8500 pinctrl portions.
As the pin controller (also the ABx500 controllers) is an
inherent part of the SoC and will prevent boot if not
available, select this from the Ux500 SoC Kconfig.
Acked-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-ux500/Kconfig

@@ -20,6 +20,7 @@ config UX500_SOC_DB8500
 	select MFD_DB8500_PRCMU
 	select PINCTRL_DB8500
 	select PINCTRL_DB8540
+	select PINCTRL_AB8500
 	select REGULATOR
 	select REGULATOR_DB8500_PRCMU
 

drivers/pinctrl/Kconfig

@@ -33,6 +33,10 @@ config PINCTRL_ABX500
 	help
 	  Select this to enable the ABx500 family IC GPIO driver
 
+config PINCTRL_AB8500
+	bool "AB8500 pin controller driver"
+	depends on PINCTRL_ABX500 && ARCH_U8500
+
 config PINCTRL_AT91
 	bool "AT91 pinctrl driver"
 	depends on OF

drivers/pinctrl/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_PINCTRL)		+= devicetree.o
 endif
 obj-$(CONFIG_GENERIC_PINCONF)	+= pinconf-generic.o
 obj-$(CONFIG_PINCTRL_ABX500)	+= pinctrl-abx500.o
+obj-$(CONFIG_PINCTRL_AB8500)	+= pinctrl-ab8500.o
 obj-$(CONFIG_PINCTRL_AT91)	+= pinctrl-at91.o
 obj-$(CONFIG_PINCTRL_BCM2835)	+= pinctrl-bcm2835.o
 obj-$(CONFIG_PINCTRL_IMX)	+= pinctrl-imx.o

drivers/pinctrl/pinctrl-abx500.c

@@ -1116,6 +1116,9 @@ static int abx500_gpio_probe(struct platform_device *pdev)
 
 	/* Poke in other ASIC variants here */
 	switch (platid->driver_data) {
+	case PINCTRL_AB8500:
+		abx500_pinctrl_ab8500_init(&pct->soc);
+		break;
 	default:
 		dev_err(&pdev->dev, "Unsupported pinctrl sub driver (%d)\n",
 				(int) platid->driver_data);

drivers/pinctrl/pinctrl-abx500.h

@@ -177,4 +177,17 @@ struct abx500_pinctrl_soc_data {
 	int irq_gpio_factor;
 };
 
+#ifdef CONFIG_PINCTRL_AB8500
+
+void abx500_pinctrl_ab8500_init(struct abx500_pinctrl_soc_data **soc);
+
+#else
+
+static inline void
+abx500_pinctrl_ab8500_init(struct abx500_pinctrl_soc_data **soc)
+{
+}
+
+#endif
+
 #endif /* PINCTRL_PINCTRL_ABx500_H */