ARM: S5PV210: Add support for GPIO Interrupt

S5PV210/S5PC110 can use common S5P GPIO interrupt code.
This patch adds required defines and code to make use of it.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: minor title fixes]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s5pv210/gpiolib.c

@@ -150,6 +150,7 @@ static struct s3c_gpio_chip s5pv210_gpio_4bit[] = {
 			.label	= "GPG3",
 		},
 	}, {
+		.config	= &gpio_cfg_noint,
 		.chip	= {
 			.base	= S5PV210_GPI(0),
 			.ngpio	= S5PV210_GPIO_I_NR,
@@ -259,11 +260,14 @@ static __init int s5pv210_gpiolib_init(void)
 {
 	struct s3c_gpio_chip *chip = s5pv210_gpio_4bit;
 	int nr_chips = ARRAY_SIZE(s5pv210_gpio_4bit);
+	int gpioint_group = 0;
 	int i = 0;
 
 	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL)
+		if (chip->config == NULL) {
 			chip->config = &gpio_cfg;
+			chip->group = gpioint_group++;
+		}
 		if (chip->base == NULL)
 			chip->base = S5PV210_BANK_BASE(i);
 	}

arch/arm/mach-s5pv210/include/mach/irqs.h

@@ -121,8 +121,12 @@
 #define S5P_EINT_BASE1		(S5P_IRQ_VIC0(0))
 #define S5P_EINT_BASE2		(IRQ_VIC_END + 1)
 
+/* GPIO interrupt */
+#define S5P_GPIOINT_BASE	(IRQ_EINT(31) + 1)
+#define S5P_GPIOINT_GROUP_MAXNR	22
+
 /* Set the default NR_IRQS */
-#define NR_IRQS			(IRQ_EINT(31) + 1)
+#define NR_IRQS			(IRQ_EINT(31) + S5P_GPIOINT_COUNT + 1)
 
 /* Compatibility */
 #define IRQ_LCD_FIFO		IRQ_LCD0