[PATCH 2/4] mfd: arizona: Propagate irq_wake through to parent IRQ

[Charles Keepax <ckeepax@opensource.wolfsonmicro.com>]

If one of the internal Arizona IRQs is set as a wake source this needs
to be propogated back to the actual IRQ line that the Arizona device is
attached to.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 drivers/mfd/arizona-irq.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/arizona-irq.c b/drivers/mfd/arizona-irq.c
index 71e8f06..fac00b2 100644
--- a/drivers/mfd/arizona-irq.c
+++ b/drivers/mfd/arizona-irq.c
@@ -148,6 +148,13 @@ static void arizona_irq_dummy(struct irq_data *data)
 {
 }
 
+static int arizona_irq_set_wake(struct irq_data *data, unsigned int on)
+{
+	struct arizona *arizona = irq_data_get_irq_chip_data(data);
+
+	return irq_set_irq_wake(arizona->irq, on);
+}
+
 static struct irq_chip arizona_irq_chip = {
 	.name			= "arizona",
 	.irq_disable		= arizona_irq_dummy,
@@ -155,6 +162,7 @@ static struct irq_chip arizona_irq_chip = {
 	.irq_ack		= arizona_irq_dummy,
 	.irq_mask		= arizona_irq_dummy,
 	.irq_unmask		= arizona_irq_dummy,
+	.irq_set_wake		= arizona_irq_set_wake,
 };
 
 static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
-- 
1.7.2.5