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Diffstat (limited to 'arch/arm/common/vic.c')
-rw-r--r--arch/arm/common/vic.c107
1 files changed, 52 insertions, 55 deletions
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 1cf999ade4bc..ba65f6eedca6 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -266,13 +266,53 @@ static int vic_set_wake(unsigned int irq, unsigned int on)
#endif /* CONFIG_PM */
static struct irq_chip vic_chip = {
- .name = "VIC",
- .ack = vic_ack_irq,
- .mask = vic_mask_irq,
- .unmask = vic_unmask_irq,
- .set_wake = vic_set_wake,
+ .name = "VIC",
+ .ack = vic_ack_irq,
+ .mask = vic_mask_irq,
+ .unmask = vic_unmask_irq,
+ .set_wake = vic_set_wake,
};
+static void __init vic_disable(void __iomem *base)
+{
+ writel(0, base + VIC_INT_SELECT);
+ writel(0, base + VIC_INT_ENABLE);
+ writel(~0, base + VIC_INT_ENABLE_CLEAR);
+ writel(0, base + VIC_IRQ_STATUS);
+ writel(0, base + VIC_ITCR);
+ writel(~0, base + VIC_INT_SOFT_CLEAR);
+}
+
+static void __init vic_clear_interrupts(void __iomem *base)
+{
+ unsigned int i;
+
+ writel(0, base + VIC_PL190_VECT_ADDR);
+ for (i = 0; i < 19; i++) {
+ unsigned int value;
+
+ value = readl(base + VIC_PL190_VECT_ADDR);
+ writel(value, base + VIC_PL190_VECT_ADDR);
+ }
+}
+
+static void __init vic_set_irq_sources(void __iomem *base,
+ unsigned int irq_start, u32 vic_sources)
+{
+ unsigned int i;
+
+ for (i = 0; i < 32; i++) {
+ if (vic_sources & (1 << i)) {
+ unsigned int irq = irq_start + i;
+
+ set_irq_chip(irq, &vic_chip);
+ set_irq_chip_data(irq, base);
+ set_irq_handler(irq, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+ }
+}
+
/*
* The PL190 cell from ARM has been modified by ST to handle 64 interrupts.
* The original cell has 32 interrupts, while the modified one has 64,
@@ -287,13 +327,7 @@ static void __init vic_init_st(void __iomem *base, unsigned int irq_start,
int vic_2nd_block = ((unsigned long)base & ~PAGE_MASK) != 0;
/* Disable all interrupts initially. */
-
- writel(0, base + VIC_INT_SELECT);
- writel(0, base + VIC_INT_ENABLE);
- writel(~0, base + VIC_INT_ENABLE_CLEAR);
- writel(0, base + VIC_IRQ_STATUS);
- writel(0, base + VIC_ITCR);
- writel(~0, base + VIC_INT_SOFT_CLEAR);
+ vic_disable(base);
/*
* Make sure we clear all existing interrupts. The vector registers
@@ -302,13 +336,8 @@ static void __init vic_init_st(void __iomem *base, unsigned int irq_start,
* the second base address, which is 0x20 in the page
*/
if (vic_2nd_block) {
- writel(0, base + VIC_PL190_VECT_ADDR);
- for (i = 0; i < 19; i++) {
- unsigned int value;
+ vic_clear_interrupts(base);
- value = readl(base + VIC_PL190_VECT_ADDR);
- writel(value, base + VIC_PL190_VECT_ADDR);
- }
/* ST has 16 vectors as well, but we don't enable them by now */
for (i = 0; i < 16; i++) {
void __iomem *reg = base + VIC_VECT_CNTL0 + (i * 4);
@@ -318,16 +347,7 @@ static void __init vic_init_st(void __iomem *base, unsigned int irq_start,
writel(32, base + VIC_PL190_DEF_VECT_ADDR);
}
- for (i = 0; i < 32; i++) {
- if (vic_sources & (1 << i)) {
- unsigned int irq = irq_start + i;
-
- set_irq_chip(irq, &vic_chip);
- set_irq_chip_data(irq, base);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
- }
+ vic_set_irq_sources(base, irq_start, vic_sources);
}
/**
@@ -365,37 +385,14 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
}
/* Disable all interrupts initially. */
+ vic_disable(base);
- writel(0, base + VIC_INT_SELECT);
- writel(0, base + VIC_INT_ENABLE);
- writel(~0, base + VIC_INT_ENABLE_CLEAR);
- writel(0, base + VIC_IRQ_STATUS);
- writel(0, base + VIC_ITCR);
- writel(~0, base + VIC_INT_SOFT_CLEAR);
-
- /*
- * Make sure we clear all existing interrupts
- */
- writel(0, base + VIC_PL190_VECT_ADDR);
- for (i = 0; i < 19; i++) {
- unsigned int value;
-
- value = readl(base + VIC_PL190_VECT_ADDR);
- writel(value, base + VIC_PL190_VECT_ADDR);
- }
+ /* Make sure we clear all existing interrupts */
+ vic_clear_interrupts(base);
vic_init2(base);
- for (i = 0; i < 32; i++) {
- if (vic_sources & (1 << i)) {
- unsigned int irq = irq_start + i;
-
- set_irq_chip(irq, &vic_chip);
- set_irq_chip_data(irq, base);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
- }
+ vic_set_irq_sources(base, irq_start, vic_sources);
vic_pm_register(base, irq_start, resume_sources);
}