irqchip: s3c24xx: add irq_set_type callback for basic interrupt types

Enables post-init setting of the desired typehandler for the interrupt.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/irqchip/irq-s3c24xx.c b/drivers/irqchip/irq-s3c24xx.c
index a565eb8def30..7cba4f0090f2 100644
--- a/drivers/irqchip/irq-s3c24xx.c
+++ b/drivers/irqchip/irq-s3c24xx.c
@@ -123,6 +123,28 @@ static inline void s3c_irq_ack(struct irq_data *data)
                 __raw_writel(bitval, intc->reg_intpnd);
 }
 
+static int s3c_irq_type(struct irq_data *data, unsigned int type)
+{
+        switch (type) {
+        case IRQ_TYPE_NONE:
+                break;
+        case IRQ_TYPE_EDGE_RISING:
+        case IRQ_TYPE_EDGE_FALLING:
+        case IRQ_TYPE_EDGE_BOTH:
+                irq_set_handler(data->irq, handle_edge_irq);
+                break;
+        case IRQ_TYPE_LEVEL_LOW:
+        case IRQ_TYPE_LEVEL_HIGH:
+                irq_set_handler(data->irq, handle_level_irq);
+                break;
+        default:
+                pr_err("No such irq type %d", type);
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
 static int s3c_irqext_type_set(void __iomem *gpcon_reg,
                                void __iomem *extint_reg,
                                unsigned long gpcon_offset,
@@ -228,6 +250,7 @@ static struct irq_chip s3c_irq_chip = {
         .irq_ack        = s3c_irq_ack,
         .irq_mask       = s3c_irq_mask,
         .irq_unmask     = s3c_irq_unmask,
+        .irq_set_type   = s3c_irq_type,
         .irq_set_wake   = s3c_irq_wake
 };
 
@@ -236,6 +259,7 @@ static struct irq_chip s3c_irq_level_chip = {
         .irq_mask       = s3c_irq_mask,
         .irq_unmask     = s3c_irq_unmask,
         .irq_ack        = s3c_irq_ack,
+        .irq_set_type   = s3c_irq_type,
 };
 
 static struct irq_chip s3c_irqext_chip = {