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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-05-06 11:26:30 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-05-06 11:26:30 +0100
commit19ca5d27e15c10d8529984ecd98dcba2637edcd2 (patch)
treeb4ad4055362306c184a12cdf040b0ce515de25e9
parent5528e568a760442e0ec8fd2dea1f0791875a066b (diff)
downloadop-kernel-dev-19ca5d27e15c10d8529984ecd98dcba2637edcd2.zip
op-kernel-dev-19ca5d27e15c10d8529984ecd98dcba2637edcd2.tar.gz
[ARM] Allow SA1100 RTC alarm to be configured for wakeup
The SA1100 RTC alarm can be configured to wake up the CPU from sleep mode, and the RTC driver has been using the API to configure this mode. Unfortunately, the code was which sets the required bit in the hardware was missing. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/mach-sa1100/irq.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index c131a52..b3a5602 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -199,10 +199,26 @@ static void sa1100_unmask_irq(unsigned int irq)
ICMR |= (1 << irq);
}
+/*
+ * Apart form GPIOs, only the RTC alarm can be a wakeup event.
+ */
+static int sa1100_set_wake(unsigned int irq, unsigned int on)
+{
+ if (irq == IRQ_RTCAlrm) {
+ if (on)
+ PWER |= PWER_RTC;
+ else
+ PWER &= ~PWER_RTC;
+ return 0;
+ }
+ return -EINVAL;
+}
+
static struct irqchip sa1100_normal_chip = {
.ack = sa1100_mask_irq,
.mask = sa1100_mask_irq,
.unmask = sa1100_unmask_irq,
+ .set_wake = sa1100_set_wake,
};
static struct resource irq_resource = {
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