1 files changed, 21 insertions, 5 deletions

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 0f3d6473bf89..d173d56dbb8c 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;