static int __devinit bcm63xx_wdt_probe(struct platform_device *pdev)
{
int ret;
struct resource *r;
setup_timer(&bcm63xx_wdt_device.timer, bcm63xx_timer_tick, 0L);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(&pdev->dev, "failed to get resources\n");
return -ENODEV;
}
bcm63xx_wdt_device.regs = ioremap_nocache(r->start, resource_size(r));
if (!bcm63xx_wdt_device.regs) {
dev_err(&pdev->dev, "failed to remap I/O resources\n");
return -ENXIO;
}
ret = bcm63xx_timer_register(TIMER_WDT_ID, bcm63xx_wdt_isr, NULL);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register wdt timer isr\n");
goto unmap;
}
if (bcm63xx_wdt_settimeout(wdt_time)) {
bcm63xx_wdt_settimeout(WDT_DEFAULT_TIME);
dev_info(&pdev->dev,
": wdt_time value must be 1 <= wdt_time <= 256, using %d\n",
wdt_time);
}
ret = misc_register(&bcm63xx_wdt_miscdev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register watchdog device\n");
goto unregister_timer;
}
dev_info(&pdev->dev, " started, timer margin: %d sec\n",
WDT_DEFAULT_TIME);
return 0;
unregister_timer:
bcm63xx_timer_unregister(TIMER_WDT_ID);
unmap:
iounmap(bcm63xx_wdt_device.regs);
return ret;
}
static long bcm63xx_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_value, retval = -EINVAL;
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &bcm63xx_wdt_info,
sizeof(bcm63xx_wdt_info)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
if (get_user(new_value, p))
return -EFAULT;
if (new_value & WDIOS_DISABLECARD) {
bcm63xx_wdt_pause();
retval = 0;
}
if (new_value & WDIOS_ENABLECARD) {
bcm63xx_wdt_start();
retval = 0;
}
return retval;
case WDIOC_KEEPALIVE:
bcm63xx_wdt_pet();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_value, p))
return -EFAULT;
if (bcm63xx_wdt_settimeout(new_value))
return -EINVAL;
bcm63xx_wdt_pet();
case WDIOC_GETTIMEOUT:
return put_user(wdt_time, p);
default:
return -ENOTTY;
}
}