diff --git a/include/linux/platform_data/gpio-rcar.h b/include/linux/platform_data/gpio-rcar.h
index 6c0027a3c370c6b38837395a6656af118774caad..2d8d6943281376a72195f5363cc1126560764e43 100644
--- a/include/linux/platform_data/gpio-rcar.h
+++ b/include/linux/platform_data/gpio-rcar.h
@@ -24,4 +24,6 @@ struct gpio_rcar_config {
 	unsigned has_both_edge_trigger:1;
 };
 
+#define RCAR_GP_PIN(bank, pin)		(((bank) * 32) + (pin))
+
 #endif /* __GPIO_RCAR_H__ */