static int __init init_watchdog(void)
{
if (enable) {
tcsr_base = ioremap_nocache(TCSR_BASE, SZ_4K);
if (tcsr_base == NULL)
return -ENOMEM;
writel(3, tcsr_base + TCSR_WDT_CFG);
delay_time = msecs_to_jiffies(PET_DELAY);
start_watchdog_timer();
printk(KERN_INFO "MSM Watchdog Initialized\n");
} else {
printk(KERN_INFO "MSM Watchdog Not Initialized\n");
}
return 0;
}
static int wd_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
int pair_no;
int value;
if( copy_from_user(&value, arg, sizeof(value)))
return -EFAULT;
switch(cmd)
{
case IOCTL_SYSTEM_OFF_BYPASS_STATE:
pair_no = value;
pair_no &= 0xff0;
switch(value & 0x0f)
{
case SYSTEM_OFF_BYPASS_STATE_ENABLE:
set_bypass_enable_when_system_off(pair_no);
break;
case SYSTEM_OFF_BYPASS_STATE_DISABLE:
set_bypass_disable_when_system_off(pair_no);
break;
default:
return -EOPNOTSUPP;
}
break;
case IOCTL_RUNTIME_BYPASS_STATE:
pair_no = value;
pair_no &= 0xff0;
switch(value & 0x0f)
{
case RUNTIME_BYPASS_STATE_ENABLE:
set_runtime_bypass_enable(pair_no);
break;
case RUNTIME_BYPASS_STATE_DISABLE:
set_runtime_bypass_disable(pair_no);
break;
default:
return -EOPNOTSUPP;
}
break;
/* Set system behavior once watchdog timer expired */
case IOCTL_SET_WDTO_STATE:
switch(value)
{
case SET_WDTO_STATE_SYSTEM_RESET:
set_wdto_state_system_reset();
break;
case SET_WDTO_STATE_LAN_BYPASS:
set_wdto_state_system_bypass();
break;
default:
return -EOPNOTSUPP;
}
break;
/* Set the watchdog timer */
case IOCTL_SET_WDTO_TIMER:
watchdog_time=value;
if ( (watchdog_time < 0 ) || (watchdog_time > 255))
{
printk(KERN_ERR "wd_drv error: Invalid time value\n");
watchdog_time=0;
return -EOPNOTSUPP;
}
break;
/* Start/Stop watchdog timer */
case IOCTL_START_STOP_WDT:
switch (value)
{
case START_WDT:
start_watchdog_timer(watchdog_time);
break;
case STOP_WDT:
stop_watchdog_timer();
break;
default:
return -EOPNOTSUPP;
}
break;
default:
return -EOPNOTSUPP;
}
return 0;
}