jz2400向内核申请中断

/iqr_test irq_traditional/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <linux/device.h>
#include <linux/sched.h>
#include <mach/regs-gpio.h>
#include <plat/gpio-fns.h>


int irq_num;

irqreturn_t irq_handler(int irq, void *args){
	printk(KERN_INFO "I am a irq_handler function\n");

	return IRQ_RETVAL(IRQ_HANDLED);
}
static int __init hello_init(void){
	int ret;

	irq_num = gpio_to_irq(S3C2410_GPF(0));
		printk(KERN_INFO "irq_num = %d\n", irq_num);
	ret = request_irq(irq_num, irq_handler, IRQF_TRIGGER_RISING, "irq_test", NULL);
	if(ret < 0){
		printk(KERN_INFO "request_irq failed\n");
	}
	return 0;

}

static void __exit hello_exit(void){

	free_irq(irq_num, NULL);

	printk(KERN_INFO "irq_exit\n");

	return;

}



module_init(hello_init);
module_exit(hello_exit);

MODULE_LICENSE("GPL");