gpio: uniphier: import dt-binginds header from Linux

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/gpio/gpio-uniphier.c

@@ -13,8 +13,7 @@
 #include <linux/errno.h>
 #include <asm/global_data.h>
 #include <asm/gpio.h>
-
-#define UNIPHIER_GPIO_LINES_PER_BANK	8
+#include <dt-bindings/gpio/uniphier-gpio.h>
 
 #define UNIPHIER_GPIO_PORT_DATA		0x0	/* data */
 #define UNIPHIER_GPIO_PORT_DIR		0x4	/* direction (1:in, 0:out) */

include/dt-bindings/gpio/uniphier-gpio.h

@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#ifndef _DT_BINDINGS_GPIO_UNIPHIER_H
+#define _DT_BINDINGS_GPIO_UNIPHIER_H
+
+#define UNIPHIER_GPIO_LINES_PER_BANK	8
+
+#define UNIPHIER_GPIO_IRQ_OFFSET	((UNIPHIER_GPIO_LINES_PER_BANK) * 15)
+
+#define UNIPHIER_GPIO_PORT(bank, line)	\
+			((UNIPHIER_GPIO_LINES_PER_BANK) * (bank) + (line))
+
+#define UNIPHIER_GPIO_IRQ(n)		((UNIPHIER_GPIO_IRQ_OFFSET) + (n))
+
+#endif /* _DT_BINDINGS_GPIO_UNIPHIER_H */