#include <linux/module.h>   /* Needed by all modules */
#include <linux/kernel.h>   /* Needed for KERN_INFO */
#include <linux/interrupt.h>

unsigned int irq = 20;
//exported by linux/arch/arm/mach-imx/tzic.c
unsigned long tzic_domain_irq(unsigned long const hwirq);
void          tzic_end_sw_irq(unsigned long const irq);

static irqreturn_t handler(int irq, void *dev_id)
{
    printk(KERN_INFO "handler!\n");
    /* end software interrupt */
    tzic_end_sw_irq(irq);
    return IRQ_HANDLED;
}


int init_module(void)
{
    int err;

    irq = tzic_domain_irq(irq);
    printk(KERN_INFO "irq: %d",irq);
    if( ( err = request_irq(irq, handler, 0, "trapps", NULL) ) )
    {
        printk(KERN_ERR "error: %d!",err);
    } else {
        printk(KERN_INFO "successfully requested irq %d\n",irq);
    }

    return err;
}

void cleanup_module(void)
{
    printk(KERN_INFO "Goodbye world 1.\n");
    free_irq(irq, NULL);
}

MODULE_LICENSE("GPL");