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11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/irq.h>
14#include <linux/irqdomain.h>
15#include <linux/io.h>
16#include <linux/of_address.h>
17#include <linux/of_irq.h>
18#include <plat/irq.h>
19#include <plat/orion-gpio.h>
20
21void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr)
22{
23 struct irq_chip_generic *gc;
24 struct irq_chip_type *ct;
25
26
27
28
29 writel(0, maskaddr);
30
31 gc = irq_alloc_generic_chip("orion_irq", 1, irq_start, maskaddr,
32 handle_level_irq);
33 ct = gc->chip_types;
34 ct->chip.irq_mask = irq_gc_mask_clr_bit;
35 ct->chip.irq_unmask = irq_gc_mask_set_bit;
36 irq_setup_generic_chip(gc, IRQ_MSK(32), IRQ_GC_INIT_MASK_CACHE,
37 IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE);
38}
39
40#ifdef CONFIG_OF
41static int __init orion_add_irq_domain(struct device_node *np,
42 struct device_node *interrupt_parent)
43{
44 int i = 0;
45 void __iomem *base;
46
47 do {
48 base = of_iomap(np, i);
49 if (base) {
50 orion_irq_init(i * 32, base + 0x04);
51 i++;
52 }
53 } while (base);
54
55 irq_domain_add_legacy(np, i * 32, 0, 0,
56 &irq_domain_simple_ops, NULL);
57 return 0;
58}
59
60static const struct of_device_id orion_irq_match[] = {
61 { .compatible = "marvell,orion-intc",
62 .data = orion_add_irq_domain, },
63 {},
64};
65
66void __init orion_dt_init_irq(void)
67{
68 of_irq_init(orion_irq_match);
69}
70#endif
71