68 	struct watchdog_device wdt_dev;  member
184 static int mtk_wdt_restart(struct watchdog_device *wdt_dev,  in mtk_wdt_restart()  argument
187 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_restart()
200 static int mtk_wdt_ping(struct watchdog_device *wdt_dev)  in mtk_wdt_ping()  argument
202 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_ping()
210 static int mtk_wdt_set_timeout(struct watchdog_device *wdt_dev,  in mtk_wdt_set_timeout()  argument
213 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_set_timeout()
217 	wdt_dev->timeout = timeout;  in mtk_wdt_set_timeout()
222 	if (wdt_dev->pretimeout)  in mtk_wdt_set_timeout()
223 		wdt_dev->pretimeout = timeout / 2;  in mtk_wdt_set_timeout()
229 	reg = WDT_LENGTH_TIMEOUT((timeout - wdt_dev->pretimeout) << 6)  in mtk_wdt_set_timeout()
233 	mtk_wdt_ping(wdt_dev);  in mtk_wdt_set_timeout()
238 static void mtk_wdt_init(struct watchdog_device *wdt_dev)  in mtk_wdt_init()  argument
240 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_init()
246 		set_bit(WDOG_HW_RUNNING, &wdt_dev->status);  in mtk_wdt_init()
247 		mtk_wdt_set_timeout(wdt_dev, wdt_dev->timeout);  in mtk_wdt_init()
251 static int mtk_wdt_stop(struct watchdog_device *wdt_dev)  in mtk_wdt_stop()  argument
253 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_stop()
265 static int mtk_wdt_start(struct watchdog_device *wdt_dev)  in mtk_wdt_start()  argument
268 	struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);  in mtk_wdt_start()
272 	ret = mtk_wdt_set_timeout(wdt_dev, wdt_dev->timeout);  in mtk_wdt_start()
277 	if (wdt_dev->pretimeout)  in mtk_wdt_start()
368 				       &mtk_wdt->wdt_dev);  in mtk_wdt_probe()
372 		mtk_wdt->wdt_dev.info = &mtk_wdt_pt_info;  in mtk_wdt_probe()
373 		mtk_wdt->wdt_dev.pretimeout = WDT_MAX_TIMEOUT / 2;  in mtk_wdt_probe()
378 		mtk_wdt->wdt_dev.info = &mtk_wdt_info;  in mtk_wdt_probe()
381 	mtk_wdt->wdt_dev.ops = &mtk_wdt_ops;  in mtk_wdt_probe()
382 	mtk_wdt->wdt_dev.timeout = WDT_MAX_TIMEOUT;  in mtk_wdt_probe()
383 	mtk_wdt->wdt_dev.max_hw_heartbeat_ms = WDT_MAX_TIMEOUT * 1000;  in mtk_wdt_probe()
384 	mtk_wdt->wdt_dev.min_timeout = WDT_MIN_TIMEOUT;  in mtk_wdt_probe()
385 	mtk_wdt->wdt_dev.parent = dev;  in mtk_wdt_probe()
387 	watchdog_init_timeout(&mtk_wdt->wdt_dev, timeout, dev);  in mtk_wdt_probe()
388 	watchdog_set_nowayout(&mtk_wdt->wdt_dev, nowayout);  in mtk_wdt_probe()
389 	watchdog_set_restart_priority(&mtk_wdt->wdt_dev, 128);  in mtk_wdt_probe()
391 	watchdog_set_drvdata(&mtk_wdt->wdt_dev, mtk_wdt);  in mtk_wdt_probe()
393 	mtk_wdt_init(&mtk_wdt->wdt_dev);  in mtk_wdt_probe()
395 	watchdog_stop_on_reboot(&mtk_wdt->wdt_dev);  in mtk_wdt_probe()
396 	err = devm_watchdog_register_device(dev, &mtk_wdt->wdt_dev);  in mtk_wdt_probe()
401 		 mtk_wdt->wdt_dev.timeout, nowayout);  in mtk_wdt_probe()
424 	if (watchdog_active(&mtk_wdt->wdt_dev))  in mtk_wdt_suspend()
425 		mtk_wdt_stop(&mtk_wdt->wdt_dev);  in mtk_wdt_suspend()
434 	if (watchdog_active(&mtk_wdt->wdt_dev)) {  in mtk_wdt_resume()
435 		mtk_wdt_start(&mtk_wdt->wdt_dev);  in mtk_wdt_resume()
436 		mtk_wdt_ping(&mtk_wdt->wdt_dev);  in mtk_wdt_resume()