1 files changed, 22 insertions, 6 deletions

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index b4ca450..d173d56 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -49,6 +49,7 @@ struct gpio_rcar_priv {
 #define POSNEG 0x20
 #define EDGLEVEL 0x24
 #define FILONOFF 0x28
+#define BOTHEDGE 0x4c
 
 static inline u32 gpio_rcar_read(struct gpio_rcar_priv *p, int offs)
 {
@@ -91,7 +92,8 @@ static void gpio_rcar_irq_enable(struct irq_data *d)
 static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
 						  unsigned int hwirq,
 						  bool active_high_rising_edge,
-						  bool level_trigger)
+						  bool level_trigger,
+						  bool both)
 {
 	unsigned long flags;
 
@@ -108,6 +110,10 @@ static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
 	/* Configure edge or level trigger in EDGLEVEL */
 	gpio_rcar_modify_bit(p, EDGLEVEL, hwirq, !level_trigger);
 
+	/* Select one edge or both edges in BOTHEDGE */
+	if (p->config.has_both_edge_trigger)
+		gpio_rcar_modify_bit(p, BOTHEDGE, hwirq, both);
+
 	/* Select "Interrupt Input Mode" in IOINTSEL */
 	gpio_rcar_modify_bit(p, IOINTSEL, hwirq, true);
 
@@ -127,16 +133,26 @@ static int gpio_rcar_irq_set_type(struct irq_data *d, unsigned int type)
 
 	switch (type & IRQ_TYPE_SENSE_MASK) {
 	case IRQ_TYPE_LEVEL_HIGH:
-		gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true);
+		gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true,
+						      false);
 		break;
 	case IRQ_TYPE_LEVEL_LOW:
-		gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true);
+		gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true,
+						      false);
 		break;
 	case IRQ_TYPE_EDGE_RISING:
-		gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false);
+		gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false,
+						      false);
 		break;
 	case IRQ_TYPE_EDGE_FALLING:
-		gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false);
+		gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false,
+						      false);
+		break;
+	case IRQ_TYPE_EDGE_BOTH:
+		if (!p->config.has_both_edge_trigger)
+			return -EINVAL;
+		gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false,
+						      true);
 		break;
 	default:
 		return -EINVAL;
@@ -333,7 +349,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 	}
 
 	if (devm_request_irq(&pdev->dev, irq->start,
-			     gpio_rcar_irq_handler, 0, name, p)) {
+			     gpio_rcar_irq_handler, IRQF_SHARED, name, p)) {
 		dev_err(&pdev->dev, "failed to request IRQ\n");
 		ret = -ENOENT;
 		goto err1;