Question about Timer interrupt

[kingseft at samsung.co.kr]

Hi all,

I have one problem about timer interrupt in MPC860.
I got simple timer interrupt routine. I think it prints out the messages when mpc8xx accept timer2 interrupt.
But It didn't work. Is there any error or missing??

Any comments will help me.

Thanks,

Jason Lee
kingseft at samsung.co.kr


[mytimer.c]
-------------------------------------------------------------------
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/poll.h>
#include <linux/miscdevice.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/mpc8xx.h>
#include <asm/io.h>
#include <asm/delay.h>
#include "commproc.h"

/*
 * Timer commands
 */
#define TIMER_TGCR_EN1  0x0001
#define TIMER_TGCR_STP1 0x0002
#define TIMER_TGCR_EN2  0x0010
#define TIMER_TGCR_STP2 0x0020

static void my_isr(void *dev_id)
{
	volatile immap_t	*immap;
	volatile cpmtimer8xx_t 	*timers;

	immap = (immap_t *)IMAP_ADDR;
	timers = (cpmtimer8xx_t *)&(immap->im_cpmtimer);

	timers->cpmt_ter2 = 0xffff;
	timers->cpmt_tcn2 = 0;

	printk("catch...\n");

}

int __init mytimer_init(void)
{
	volatile immap_t	*immap;
	volatile cpmtimer8xx_t 	*timers;

	immap = (immap_t *)IMAP_ADDR;
	timers = (cpmtimer8xx_t *)&(immap->im_cpmtimer);

	timers->cpmt_tgcr = 0x0000;
	timers->cpmt_tmr2 = 0x0018;
	timers->cpmt_tcn2 = 0;
	timers->cpmt_trr2 = 62;
	timers->cpmt_ter2 = 0xffff;

	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr |= 0x00040000;	// enable timer 2 interrupts in the CPIC
	timers->cpmt_tgcr |= TIMER_TGCR_EN2;


	cpm_install_handler(CPMVEC_TIMER2, my_isr,NULL);
	return 0;
}

#ifdef MODULE
int init_module(void)
{
	printk("Installing Timer module by kingseft\n");
	return mytimer_init();
}

void cleanup_module(void)
{

	cpm_free_handler(CPMVEC_TIMER2);

	printk("Timer Module cleanup\n");
}
#endif


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