drivers/watchdog/renesas_wdt.c

51 	struct watchdog_device wdev;
67 static int rwdt_init_timeout(struct watchdog_device *wdev)
69 	struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
71 	rwdt_write(priv, 65536 - MUL_BY_CLKS_PER_SEC(priv, wdev->timeout), RWTCNT);
85 static int rwdt_start(struct watchdog_device *wdev)
87 	struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
90 	pm_runtime_get_sync(wdev->parent);
98 	rwdt_init_timeout(wdev);
110 static int rwdt_stop(struct watchdog_device *wdev)
112 	struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
117 	pm_runtime_put(wdev->parent);
122 static unsigned int rwdt_get_timeleft(struct watchdog_device *wdev)
124 	struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
131 static int rwdt_restart(struct watchdog_device *wdev, unsigned long action,
134 	struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
239 	priv->wdev.bootstatus = csra & RWTCSRA_WOVF ? WDIOF_CARDRESET : 0;
261 	priv->wdev.info = &rwdt_ident;
262 	priv->wdev.ops = &rwdt_ops;
263 	priv->wdev.parent = dev;
264 	priv->wdev.min_timeout = 1;
265 	priv->wdev.max_timeout = DIV_BY_CLKS_PER_SEC(priv, 65536);
266 	priv->wdev.timeout = min(priv->wdev.max_timeout, RWDT_DEFAULT_TIMEOUT);
269 	watchdog_set_drvdata(&priv->wdev, priv);
270 	watchdog_set_nowayout(&priv->wdev, nowayout);
271 	watchdog_set_restart_priority(&priv->wdev, 0);
272 	watchdog_stop_on_unregister(&priv->wdev);
275 	watchdog_init_timeout(&priv->wdev, 0, dev);
280 		rwdt_start(&priv->wdev);
281 		set_bit(WDOG_HW_RUNNING, &priv->wdev.status);
284 	ret = watchdog_register_device(&priv->wdev);
299 	watchdog_unregister_device(&priv->wdev);
307 	if (watchdog_active(&priv->wdev))
308 		rwdt_stop(&priv->wdev);
317 	if (watchdog_active(&priv->wdev))
318 		rwdt_start(&priv->wdev);