{
writel(value ? 3 : 2, CONFIG_SYS_GPIO_BASE + (gpio << 2));
}
+
+static inline int gpio_is_valid(int number)
+{
+ return ((unsigned)number) < CONFIG_SYS_GPIO_WIDTH;
+}
#else
extern int gpio_request(unsigned gpio, const char *label);
extern int gpio_free(unsigned gpio);
extern int gpio_direction_output(unsigned gpio, int value);
extern int gpio_get_value(unsigned gpio);
extern void gpio_set_value(unsigned gpio, int value);
+extern int gpio_is_valid(int number);
#endif /* CONFIG_SYS_GPIO_BASE */
#endif /* _ASM_NIOS2_GPIO_H_ */