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authorThomas Gleixner <tglx@linutronix.de>2006-06-29 02:24:55 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-29 10:26:24 -0700
commitba9a2331bae5da8f65be3722b9e2d210f1987857 (patch)
treeca7cf6a1cfcab2fc4423eb38832236cfb627eaf2 /kernel/irq
parent7a55713ab456d267815fd5ca3c3d0fd14301f306 (diff)
[PATCH] genirq: add irq-wake (power-management) support
Enable platforms to set the irq-wake (power-management) properties of an IRQ. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/manage.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index b61784ee78b..3ed7aee8486 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -133,6 +133,27 @@ void enable_irq(unsigned int irq)
}
EXPORT_SYMBOL(enable_irq);
+/**
+ * set_irq_wake - control irq power management wakeup
+ * @irq: interrupt to control
+ * @on: enable/disable power management wakeup
+ *
+ * Enable/disable power management wakeup mode
+ */
+int set_irq_wake(unsigned int irq, unsigned int on)
+{
+ struct irq_desc *desc = irq_desc + irq;
+ unsigned long flags;
+ int ret = -ENXIO;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ if (desc->chip->set_wake)
+ ret = desc->chip->set_wake(irq, on);
+ spin_unlock_irqrestore(&desc->lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(set_irq_wake);
+
/*
* Internal function that tells the architecture code whether a
* particular irq has been exclusively allocated or is available