static int __devinit orion_wdt_probe(struct platform_device *pdev)
{
struct orion_wdt_platform_data *pdata = pdev->dev.platform_data;
int ret;
if (pdata) {
wdt_tclk = pdata->tclk;
} else {
printk(KERN_ERR "Orion Watchdog misses platform data\n");
return -ENODEV;
}
if (orion_wdt_miscdev.parent)
return -EBUSY;
orion_wdt_miscdev.parent = &pdev->dev;
wdt_max_duration = WDT_MAX_CYCLE_COUNT / wdt_tclk;
if (orion_wdt_settimeout(heartbeat))
heartbeat = wdt_max_duration;
ret = misc_register(&orion_wdt_miscdev);
if (ret)
return ret;
printk(KERN_INFO "Orion Watchdog Timer: Initial timeout %d sec%s\n",
heartbeat, nowayout ? ", nowayout" : "");
return 0;
}
static int __devinit orion_wdt_probe(struct platform_device *pdev)
{
struct orion_wdt_platform_data *pdata = pdev->dev.platform_data;
struct resource *res;
int ret;
if (pdata) {
wdt_tclk = pdata->tclk;
} else {
pr_err("misses platform data\n");
return -ENODEV;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
wdt_reg = ioremap(res->start, resource_size(res));
if (orion_wdt_miscdev.parent)
return -EBUSY;
orion_wdt_miscdev.parent = &pdev->dev;
wdt_max_duration = WDT_MAX_CYCLE_COUNT / wdt_tclk;
if (orion_wdt_settimeout(heartbeat))
heartbeat = wdt_max_duration;
ret = misc_register(&orion_wdt_miscdev);
if (ret)
return ret;
pr_info("Initial timeout %d sec%s\n",
heartbeat, nowayout ? ", nowayout" : "");
return 0;
}
static long orion_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int ret = -ENOTTY;
int time;
switch (cmd) {
case WDIOC_GETSUPPORT:
ret = copy_to_user((struct watchdog_info *)arg, &ident,
sizeof(ident)) ? -EFAULT : 0;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
ret = put_user(0, (int *)arg);
break;
case WDIOC_KEEPALIVE:
orion_wdt_ping();
ret = 0;
break;
case WDIOC_SETTIMEOUT:
ret = get_user(time, (int *)arg);
if (ret)
break;
if (orion_wdt_settimeout(time)) {
ret = -EINVAL;
break;
}
orion_wdt_ping();
case WDIOC_GETTIMEOUT:
ret = put_user(heartbeat, (int *)arg);
break;
case WDIOC_GETTIMELEFT:
if (orion_wdt_get_timeleft(&time)) {
ret = -EINVAL;
break;
}
ret = put_user(time, (int *)arg);
break;
}
return ret;
}
