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irqchip: loongarch-cpu: add DT support 

LoongArch is coming to support booting with FDT, so DT
support of this driver is desired.

Signed-off-by: Liu Peibao <liupeibao@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221114113824.1880-2-liupeibao@loongson.cn
This commit is contained in:
Liu Peibao 2022-11-14 19:38:23 +08:00 committed by Marc Zyngier
parent 247f34f7b8
commit 855d4ca4bd
1 changed files with 19 additions and 0 deletions
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19
drivers/irqchip/irq-loongarch-cpu.c
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@ -92,6 +92,25 @@ static const struct irq_domain_ops loongarch_cpu_intc_irq_domain_ops = {
.xlate = irq_domain_xlate_onecell,
};
#ifdef CONFIG_OF
int __init loongarch_cpu_irq_of_init(struct device_node *of_node,
struct device_node *parent)
{
cpuintc_handle = of_node_to_fwnode(of_node);
irq_domain = irq_domain_create_linear(cpuintc_handle, EXCCODE_INT_NUM,
&loongarch_cpu_intc_irq_domain_ops, NULL);
if (!irq_domain)
panic("Failed to add irqdomain for loongarch CPU");
set_handle_irq(&handle_cpu_irq);
return 0;
}
IRQCHIP_DECLARE(cpu_intc, "loongson,cpu-interrupt-controller",
loongarch_cpu_irq_of_init);
#endif
static int __init
liointc_parse_madt(union acpi_subtable_headers *header,
const unsigned long end)