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MIPS: lantiq: irq: register the interrupt controllers with irqchip_init

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Add support for more interrupt controllers by switching from
of_irq_init() to irqchip_init() in Lantiq's arch_init_irq(). This
requires switching the ICU interrupt controller to use
IRQCHIP_DECLARE(), like a real irqchip driver would do.

This is needed for future changes when new irqchip drivers are
implemented:
- a dedicated driver for the EIU interrupt controller
- a driver for the MSI PIC (Programmable Interrupt Controller) found on
  VRX200 and newer SoCs
- ..or any other driver which uses IRQCHIP_DECLARE

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Martin Blumenstingl 2021-01-09 20:53:51 +01:00 committed by Thomas Bogendoerfer
parent 6b5ea5b7a7
commit e91fd6ddb7
1 changed files with 3 additions and 5 deletions
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8
arch/mips/lantiq/irq.c
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@ -8,6 +8,7 @@
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
@ -422,12 +423,9 @@ unsigned int get_c0_compare_int(void)
return CP0_LEGACY_COMPARE_IRQ;
}
static const struct of_device_id of_irq_ids[] __initconst = {
{ .compatible = "lantiq,icu", .data = icu_of_init },
{},
};
IRQCHIP_DECLARE(lantiq_icu, "lantiq,icu", icu_of_init);
void __init arch_init_irq(void)
{
of_irq_init(of_irq_ids);
irqchip_init();
}