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authorChanghwan Youn <chaos.youn@samsung.com>2010-11-29 17:05:16 +0900
committerKukjin Kim <kgene.kim@samsung.com>2010-12-08 18:11:37 +0900
commit85140ad591e696bc88b0ad7c978256f91099e6c9 (patch)
tree89c04eacc38d85a550417e3bea17725dc36afff2 /arch/arm
parent1f2d6c49f087c84ed54ad3e0801faeca3e2ccfdd (diff)
downloadop-kernel-dev-85140ad591e696bc88b0ad7c978256f91099e6c9.zip
op-kernel-dev-85140ad591e696bc88b0ad7c978256f91099e6c9.tar.gz
ARM: S5PV310: Add irq_mask to handle combiner irqs properly
The 4 combiner groups use same registers to handle the interrupt. In previous implementation, the whole registers are checked to find which interupt is occurred and thus interrupt in other groups can be detected. This patch adds irq_mask to solve this problem. Signed-off-by: Changhwan Youn <chaos.youn@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-s5pv310/irq-combiner.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/mach-s5pv310/irq-combiner.c b/arch/arm/mach-s5pv310/irq-combiner.c
index c3f88c3..aad5c3d 100644
--- a/arch/arm/mach-s5pv310/irq-combiner.c
+++ b/arch/arm/mach-s5pv310/irq-combiner.c
@@ -24,6 +24,7 @@ static DEFINE_SPINLOCK(irq_controller_lock);
struct combiner_chip_data {
unsigned int irq_offset;
+ unsigned int irq_mask;
void __iomem *base;
};
@@ -62,6 +63,7 @@ static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
spin_lock(&irq_controller_lock);
status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
spin_unlock(&irq_controller_lock);
+ status &= chip_data->irq_mask;
if (status == 0)
goto out;
@@ -104,10 +106,12 @@ void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
combiner_data[combiner_nr].base = base;
combiner_data[combiner_nr].irq_offset = irq_start;
+ combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
/* Disable all interrupts */
- __raw_writel(0xffffffff, base + COMBINER_ENABLE_CLEAR);
+ __raw_writel(combiner_data[combiner_nr].irq_mask,
+ base + COMBINER_ENABLE_CLEAR);
/* Setup the Linux IRQ subsystem */
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