2 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
index 1c6b92947c5..5b43b95da68 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
@@ -169,4 +169,22 @@ extern s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin);
 */
 extern int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr);
 
+/**
+ * s5p_register_gpio_interrupt() - register interrupt support for a gpio group
+ * @pin: The pin number from the group to be registered
+ *
+ * This function registers gpio interrupt support for the group that the
+ * specified pin belongs to.
+ *
+ * The total number of gpio pins is quite large ob s5p series. Registering
+ * irq support for all of them would be a resource waste. Because of that the
+ * interrupt support for standard gpio pins is registered dynamically.
+ *
+ * It will return the irq number of the interrupt that has been registered
+ * or -ENOMEM if no more gpio interrupts can be registered. It is allowed
+ * to call this function more than once for the same gpio group (the group
+ * will be registered only once).
+ */
+extern int s5p_register_gpio_interrupt(int pin);
+
 #endif /* __PLAT_GPIO_CFG_H */
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
index e358c7da848..c22c27ca675 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-core.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
@@ -43,6 +43,8 @@ struct s3c_gpio_cfg;
  * struct s3c_gpio_chip - wrapper for specific implementation of gpio
  * @chip: The chip structure to be exported via gpiolib.
  * @base: The base pointer to the gpio configuration registers.
+ * @group: The group register number for gpio interrupt support.
+ * @irq_base: The base irq number.
  * @config: special function and pull-resistor control information.
  * @lock: Lock for exclusive access to this gpio bank.
  * @pm_save: Save information for suspend/resume support.
@@ -63,6 +65,8 @@ struct s3c_gpio_chip {
 	struct s3c_gpio_cfg	*config;
 	struct s3c_gpio_pm	*pm;
 	void __iomem		*base;
+	int			irq_base;
+	int			group;
 	spinlock_t		 lock;
 #ifdef CONFIG_PM
 	u32			pm_save[4];