Driver code

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/kdev_t.h>
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/ipu.h>
#include <mach/io.h>
#include <asm/uaccess.h>
#include <mach/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

MODULE_LICENSE("Dual BSD/GPL");

void xxx_do_tasklet(unsigned long);

DECLARE_TASKLET(xxx_tasklet,xxx_do_tasklet, 0);

void xxx_do_tasklet(unsigned long i){
	printk("I2\n");
}

irqreturn_t xxx_interrupt(int irq, void *dev_id){
	printk("I1\n");
	tasklet_schedule(&xxx_tasklet);
	return 0;
} 

static int hello_init(void){
	int result;
	int *PAD16_MUX,*GPIO3_ICR2,*GPIO3_IMR;
	printk("T1\n");	
	PAD16_MUX  = ioremap_nocache(0x020e00a0,4);
	GPIO3_ICR2 = ioremap_nocache(0x020a4010,4);
	GPIO3_IMR  = ioremap_nocache(0x020a4014,4);
	writel(0x00000005,PAD16_MUX );
	writel(0x00000300,GPIO3_ICR2);
	writel(0x00100000,GPIO3_IMR );
	result = request_irq(103,xxx_interrupt,IRQF_DISABLED,"xxx","NULL");
	printk("T2 = %x\n",result);
	return 0;
}

static void hello_exit(void) {
	printk(KERN_ALERT"Goodbye, Hello world\n");
}

module_init(hello_init);
module_exit(hello_exit);