[PATCH 08/12] MIPS: GIC: Implement generic irq_ack/irq_eoi callbacks

[Andrew Bresticker <abrestic@chromium.org>]

Implement a default gic_irq_ack() and gic_finish_irq().  These are
suitable for handling IPIs on Malta and the upcoming Danube board.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
---
 arch/mips/kernel/irq-gic.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c
index 01fcc28..1764b01 100644
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -242,6 +242,20 @@ static void gic_unmask_irq(struct irq_data *d)
 	GIC_SET_INTR_MASK(d->irq - gic_irq_base);
 }
 
+void __weak gic_irq_ack(struct irq_data *d)
+{
+	GIC_CLR_INTR_MASK(d->irq - gic_irq_base);
+
+	/* Clear edge detector */
+	if (gic_irq_flags[d->irq - gic_irq_base] & GIC_TRIG_EDGE)
+		GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), d->irq - gic_irq_base);
+}
+
+void __weak gic_finish_irq(struct irq_data *d)
+{
+	GIC_SET_INTR_MASK(d->irq - gic_irq_base);
+}
+
 static int gic_set_type(struct irq_data *d, unsigned int type)
 {
 	unsigned int irq = d->irq - gic_irq_base;
-- 
2.1.0.rc2.206.gedb03e5