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@@ -50,6 +50,8 @@
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void __iomem *avic_base;
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+static u32 avic_saved_mask_reg[2];
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+
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#ifdef CONFIG_MXC_IRQ_PRIOR
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static int avic_irq_set_priority(unsigned char irq, unsigned char prio)
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{
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@@ -90,24 +92,8 @@ static int avic_set_irq_fiq(unsigned int irq, unsigned int type)
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}
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#endif /* CONFIG_FIQ */
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-/* Disable interrupt number "irq" in the AVIC */
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-static void mxc_mask_irq(struct irq_data *d)
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-{
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- __raw_writel(d->irq, avic_base + AVIC_INTDISNUM);
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-}
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-/* Enable interrupt number "irq" in the AVIC */
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-static void mxc_unmask_irq(struct irq_data *d)
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-{
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- __raw_writel(d->irq, avic_base + AVIC_INTENNUM);
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-}
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-
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-static struct mxc_irq_chip mxc_avic_chip = {
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- .base = {
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- .irq_ack = mxc_mask_irq,
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- .irq_mask = mxc_mask_irq,
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- .irq_unmask = mxc_unmask_irq,
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- },
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+static struct mxc_extra_irq avic_extra_irq = {
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#ifdef CONFIG_MXC_IRQ_PRIOR
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.set_priority = avic_irq_set_priority,
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#endif
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@@ -116,6 +102,68 @@ static struct mxc_irq_chip mxc_avic_chip = {
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#endif
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};
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+#ifdef CONFIG_PM
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+static void avic_irq_suspend(struct irq_data *d)
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+{
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+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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+ struct irq_chip_type *ct = gc->chip_types;
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+ int idx = gc->irq_base >> 5;
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+
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+ avic_saved_mask_reg[idx] = __raw_readl(avic_base + ct->regs.mask);
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+ __raw_writel(gc->wake_active, avic_base + ct->regs.mask);
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+}
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+
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+static void avic_irq_resume(struct irq_data *d)
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+{
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+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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+ struct irq_chip_type *ct = gc->chip_types;
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+ int idx = gc->irq_base >> 5;
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+
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+ __raw_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask);
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+}
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+
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+#else
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+#define avic_irq_suspend NULL
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+#define avic_irq_resume NULL
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+#endif
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+
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+static __init void avic_init_gc(unsigned int irq_start)
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+{
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+ struct irq_chip_generic *gc;
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+ struct irq_chip_type *ct;
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+ int idx = irq_start >> 5;
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+
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+ gc = irq_alloc_generic_chip("mxc-avic", 1, irq_start, avic_base,
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+ handle_level_irq);
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+ gc->private = &avic_extra_irq;
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+ gc->wake_enabled = IRQ_MSK(32);
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+
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+ ct = gc->chip_types;
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+ ct->chip.irq_mask = irq_gc_mask_clr_bit;
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+ ct->chip.irq_unmask = irq_gc_mask_set_bit;
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+ ct->chip.irq_ack = irq_gc_mask_clr_bit;
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+ ct->chip.irq_set_wake = irq_gc_set_wake;
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+ ct->chip.irq_suspend = avic_irq_suspend;
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+ ct->chip.irq_resume = avic_irq_resume;
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+ ct->regs.mask = !idx ? AVIC_INTENABLEL : AVIC_INTENABLEH;
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+ ct->regs.ack = ct->regs.mask;
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+
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+ irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
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+}
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+
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+asmlinkage void __exception_irq_entry avic_handle_irq(struct pt_regs *regs)
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+{
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+ u32 nivector;
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+
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+ do {
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+ nivector = __raw_readl(avic_base + AVIC_NIVECSR) >> 16;
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+ if (nivector == 0xffff)
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+ break;
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+
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+ handle_IRQ(nivector, regs);
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+ } while (1);
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+}
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+
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/*
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* This function initializes the AVIC hardware and disables all the
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* interrupts. It registers the interrupt enable and disable functions
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@@ -140,11 +188,9 @@ void __init mxc_init_irq(void __iomem *irqbase)
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/* all IRQ no FIQ */
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__raw_writel(0, avic_base + AVIC_INTTYPEH);
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__raw_writel(0, avic_base + AVIC_INTTYPEL);
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- for (i = 0; i < AVIC_NUM_IRQS; i++) {
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- irq_set_chip_and_handler(i, &mxc_avic_chip.base,
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- handle_level_irq);
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- set_irq_flags(i, IRQF_VALID);
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- }
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+
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+ for (i = 0; i < AVIC_NUM_IRQS; i += 32)
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+ avic_init_gc(i);
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/* Set default priority value (0) for all IRQ's */
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for (i = 0; i < 8; i++)
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@@ -157,4 +203,3 @@ void __init mxc_init_irq(void __iomem *irqbase)
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printk(KERN_INFO "MXC IRQ initialized\n");
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}
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-
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