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authorDongsheng.wang@freescale.com <Dongsheng.wang@freescale.com>2013-04-09 10:22:29 +0800
committerScott Wood <scottwood@freescale.com>2013-07-01 18:38:41 -0500
commit5ff04b7287d87c1db74f47360365905ed9a97ff7 (patch)
treea1a01beb55cf349f09cbd9e6f6d145fb861d693c
parent9837b43c5f3514e5d28f65f1513f4dc6759d2810 (diff)
downloadblackbird-op-linux-5ff04b7287d87c1db74f47360365905ed9a97ff7.tar.gz
blackbird-op-linux-5ff04b7287d87c1db74f47360365905ed9a97ff7.zip
powerpc/mpic: add irq_set_wake support
Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag. So the wake up interrupt will not be disable in suspend_device_irqs. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
-rw-r--r--arch/powerpc/sysdev/mpic.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 1a4e19c6a688..4635d11f2dc2 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -920,6 +920,22 @@ int mpic_set_irq_type(struct irq_data *d, unsigned int flow_type)
return IRQ_SET_MASK_OK_NOCOPY;
}
+static int mpic_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+ struct irq_desc *desc = container_of(d, struct irq_desc, irq_data);
+ struct mpic *mpic = mpic_from_irq_data(d);
+
+ if (!(mpic->flags & MPIC_FSL))
+ return -ENXIO;
+
+ if (on)
+ desc->action->flags |= IRQF_NO_SUSPEND;
+ else
+ desc->action->flags &= ~IRQF_NO_SUSPEND;
+
+ return 0;
+}
+
void mpic_set_vector(unsigned int virq, unsigned int vector)
{
struct mpic *mpic = mpic_from_irq(virq);
@@ -957,6 +973,7 @@ static struct irq_chip mpic_irq_chip = {
.irq_unmask = mpic_unmask_irq,
.irq_eoi = mpic_end_irq,
.irq_set_type = mpic_set_irq_type,
+ .irq_set_wake = mpic_irq_set_wake,
};
#ifdef CONFIG_SMP
@@ -971,6 +988,7 @@ static struct irq_chip mpic_tm_chip = {
.irq_mask = mpic_mask_tm,
.irq_unmask = mpic_unmask_tm,
.irq_eoi = mpic_end_irq,
+ .irq_set_wake = mpic_irq_set_wake,
};
#ifdef CONFIG_MPIC_U3_HT_IRQS
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