pinctrl/abx500: align GPIO cluster boundaries

Not quite sure how this ever worked. In ab8500_gpio_to_irq() the
GPIO for conversion is passed through as the second argument. If
GPIO13, which is a valid GPIO for IRQ functionality, was received;
it would be rejected by the following guard:

    GPIO_IRQ_CLUSTER(5, 12, 0); /* GPIO numbers start from 1 */

    if (offset >= cluster->start && offset <= cluster->end)
        /* Valid GPIO for IRQ use */

Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Augmented to account for off-by-one problem]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-ab8500.c

@@ -456,9 +456,9 @@ struct alternate_functions ab8500_alternate_functions[AB8500_GPIO_MAX_NUMBER + 1
  *	GPIO36 to GPIO41
  */
 struct abx500_gpio_irq_cluster ab8500_gpio_irq_cluster[] = {
-	GPIO_IRQ_CLUSTER(5, 12, 0), /* GPIO numbers start from 1 */
-	GPIO_IRQ_CLUSTER(23, 24, 0),
-	GPIO_IRQ_CLUSTER(35, 40, 0),
+	GPIO_IRQ_CLUSTER(6, 13, 0),
+	GPIO_IRQ_CLUSTER(24, 25, 0),
+	GPIO_IRQ_CLUSTER(36, 41, 0),
 };
 
 static struct abx500_pinctrl_soc_data ab8500_soc = {

drivers/pinctrl/pinctrl-ab8505.c

@@ -349,11 +349,11 @@ struct alternate_functions ab8505_alternate_functions[AB8505_GPIO_MAX_NUMBER + 1
  *	GPIO52 to GPIO53
  */
 struct abx500_gpio_irq_cluster ab8505_gpio_irq_cluster[] = {
-	GPIO_IRQ_CLUSTER(9, 10, 0), /* GPIO numbers start from 1 */
-	GPIO_IRQ_CLUSTER(12, 12, 0),
-	GPIO_IRQ_CLUSTER(39, 40, 0),
-	GPIO_IRQ_CLUSTER(49, 49, 0),
-	GPIO_IRQ_CLUSTER(51, 52, 0),
+	GPIO_IRQ_CLUSTER(10, 11, 0),
+	GPIO_IRQ_CLUSTER(13, 13, 0),
+	GPIO_IRQ_CLUSTER(40, 41, 0),
+	GPIO_IRQ_CLUSTER(50, 50, 0),
+	GPIO_IRQ_CLUSTER(52, 53, 0),
 };
 
 static struct abx500_pinctrl_soc_data ab8505_soc = {

drivers/pinctrl/pinctrl-ab8540.c

@@ -377,8 +377,8 @@ static struct pullud ab8540_pullud = {
  *	GPIO51 to GPIO54
  */
 struct abx500_gpio_irq_cluster ab8540_gpio_irq_cluster[] = {
-	GPIO_IRQ_CLUSTER(42, 43, 2), /* GPIO numbers start from 1 */
-	GPIO_IRQ_CLUSTER(50, 53, 0),
+	GPIO_IRQ_CLUSTER(43, 44, 2),
+	GPIO_IRQ_CLUSTER(51, 54, 0),
 };
 
 static struct abx500_pinctrl_soc_data ab8540_soc = {

drivers/pinctrl/pinctrl-ab9540.c

@@ -455,10 +455,10 @@ struct alternate_functions ab9540alternate_functions[AB9540_GPIO_MAX_NUMBER + 1]
 };
 
 struct abx500_gpio_irq_cluster ab9540_gpio_irq_cluster[] = {
-	GPIO_IRQ_CLUSTER(9, 12, 0), /* GPIO numbers start from 1 */
-	GPIO_IRQ_CLUSTER(23, 24, 0),
-	GPIO_IRQ_CLUSTER(39, 40, 0),
-	GPIO_IRQ_CLUSTER(49, 53, 0),
+	GPIO_IRQ_CLUSTER(10, 13, 0),
+	GPIO_IRQ_CLUSTER(24, 25, 0),
+	GPIO_IRQ_CLUSTER(40, 41, 0),
+	GPIO_IRQ_CLUSTER(50, 54, 0),
 };
 
 static struct abx500_pinctrl_soc_data ab9540_soc = {

drivers/pinctrl/pinctrl-abx500.c

@@ -272,15 +272,17 @@ static int abx500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 static int abx500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 {
 	struct abx500_pinctrl *pct = to_abx500_pinctrl(chip);
+	/* The AB8500 GPIO numbers are off by one */
+	int gpio = offset + 1;
 	int base = pct->irq_base;
 	int i;
 
 	for (i = 0; i < pct->irq_cluster_size; i++) {
 		struct abx500_gpio_irq_cluster *cluster =
 			&pct->irq_cluster[i];
 
-		if (offset >= cluster->start && offset <= cluster->end)
-			return base + offset - cluster->start;
+		if (gpio >= cluster->start && gpio <= cluster->end)
+			return base + gpio - cluster->start;
 
 		/* Advance by the number of gpios in this cluster */
 		base += cluster->end + cluster->offset - cluster->start + 1;