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

Andrew Bresticker
2014-08-29T22:14:35Z

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