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Interrupt Controller (interrupt)

Interrupt controller.

Device Type​

DEVICE_TYPE_IRQCHIP

Struct​

struct irqchip_t {
    char * name;
    int base, nirq;
    void * handler;
    void (*enable)(struct irqchip_t * chip, int offset);
    void (*disable)(struct irqchip_t * chip, int offset);
    void (*settype)(struct irqchip_t * chip, int offset, int type);
    void (*dispatch)(struct irqchip_t * chip);
    void * priv;
};

Key API​

FunctionDescription
register/unregister_irqchip(chip, drv)Register/unregister interrupt controller
irq_is_valid(irq)Check if IRQ is valid
request_irq(irq, handler, data)Request IRQ
free_irq(irq)Free IRQ
enable_irq/disable_irq(irq)Enable/disable IRQ

Description​

Interrupt controller interface. Manages hardware interrupt lines, supports level/edge trigger types. Supports hierarchical interrupt controllers, provides request_irq()/free_irq() for registering interrupt handlers.