Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

[net-next-2.6.git] / arch / arm / plat-samsung / include / plat / gpio-cfg.h

diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
index f684901b4b7679f16cdbf366a9905057557299f7..e4b5cf126fa9bb96ce1a765be6d3d639528de217 100644 (file)
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
@@ -207,4 +207,22 @@ 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 */