static int __init bfin_wdt_init(void)
{
int ret;
stampit();
/* Check that the timeout value is within range */
if (bfin_wdt_set_timeout(timeout))
return -EINVAL;
/* Since this is an on-chip device and needs no board-specific
* resources, we'll handle all the platform device stuff here.
*/
ret = platform_driver_register(&bfin_wdt_driver);
if (ret) {
pr_init(KERN_ERR PFX "unable to register driver\n");
return ret;
}
bfin_wdt_device = platform_device_register_simple(WATCHDOG_NAME,
-1, NULL, 0);
if (IS_ERR(bfin_wdt_device)) {
pr_init(KERN_ERR PFX "unable to register device\n");
platform_driver_unregister(&bfin_wdt_driver);
return PTR_ERR(bfin_wdt_device);
}
return 0;
}
static int __init bfin_wdt_init(void)
{
int ret;
stampit();
/* */
if (bfin_wdt_set_timeout(timeout))
return -EINVAL;
/*
*/
ret = platform_driver_register(&bfin_wdt_driver);
if (ret) {
pr_err("unable to register driver\n");
return ret;
}
bfin_wdt_device = platform_device_register_simple(WATCHDOG_NAME,
-1, NULL, 0);
if (IS_ERR(bfin_wdt_device)) {
pr_err("unable to register device\n");
platform_driver_unregister(&bfin_wdt_driver);
return PTR_ERR(bfin_wdt_device);
}
return 0;
}
static int bfin_wdt_resume(struct platform_device *pdev)
{
stampit();
if (state_before_suspend) {
bfin_wdt_set_timeout(timeout);
bfin_wdt_start();
}
return 0;
}
static long bfin_wdt_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
stampit();
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &bfin_wdt_info, sizeof(bfin_wdt_info)))
return -EFAULT;
else
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(!!(_bfin_swrst & SWRST_RESET_WDOG), p);
case WDIOC_SETOPTIONS: {
unsigned long flags;
int options, ret = -EINVAL;
if (get_user(options, p))
return -EFAULT;
spin_lock_irqsave(&bfin_wdt_spinlock, flags);
if (options & WDIOS_DISABLECARD) {
bfin_wdt_stop();
ret = 0;
}
if (options & WDIOS_ENABLECARD) {
bfin_wdt_start();
ret = 0;
}
spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
return ret;
}
case WDIOC_KEEPALIVE:
bfin_wdt_keepalive();
return 0;
case WDIOC_SETTIMEOUT: {
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
if (bfin_wdt_set_timeout(new_timeout))
return -EINVAL;
}
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
}
