1 // SPDX-License-Identifier: GPL-2.0-or-later
36 #define DRVNAME	"lenovo-se10-wdt"
38 /*The timeout range is 1-255 seconds*/
43 #define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
47 static int timeout; /* in seconds */  variable
48 module_param(timeout, int, 0);
49 MODULE_PARM_DESC(timeout,
50 		 "Watchdog timeout in seconds. 1 <= timeout <= 255, default="
66 		return -EBUSY;  in set_bram()
109 static int wdt_set_timeout(struct watchdog_device *wdog, unsigned int timeout)  in wdt_set_timeout()  argument
111 	wdog->timeout = timeout;  in wdt_set_timeout()
112 	return set_bram(CUS_WDT_CFG, wdog->timeout);  in wdt_set_timeout()
125 		return -EBUSY;  in wdt_get_time()
136 		return -EBUSY;  in wdt_ping()
172 	struct device *dev = &pdev->dev;  in se10_wdt_probe()
178 		return -EBUSY;  in se10_wdt_probe()
183 		return -ENODEV;  in se10_wdt_probe()
194 		return -ENOMEM;  in se10_wdt_probe()
196 	watchdog_set_drvdata(&priv->wdd, priv);  in se10_wdt_probe()
198 	priv->wdd.parent = dev;  in se10_wdt_probe()
199 	priv->wdd.info = &wdt_info;  in se10_wdt_probe()
200 	priv->wdd.ops = &se10_wdt_ops;  in se10_wdt_probe()
201 	priv->wdd.timeout = WATCHDOG_TIMEOUT; /* Set default timeout */  in se10_wdt_probe()
202 	priv->wdd.min_timeout = MIN_TIMEOUT;  in se10_wdt_probe()
203 	priv->wdd.max_timeout = MAX_TIMEOUT;  in se10_wdt_probe()
207 	watchdog_init_timeout(&priv->wdd, timeout, dev);  in se10_wdt_probe()
208 	watchdog_set_nowayout(&priv->wdd, nowayout);  in se10_wdt_probe()
209 	watchdog_stop_on_reboot(&priv->wdd);  in se10_wdt_probe()
210 	watchdog_stop_on_unregister(&priv->wdd);  in se10_wdt_probe()
212 	ret = devm_watchdog_register_device(dev, &priv->wdd);  in se10_wdt_probe()
214 	dev_dbg(&pdev->dev, "initialized. timeout=%d sec (nowayout=%d)\n",  in se10_wdt_probe()
215 		priv->wdd.timeout, nowayout);  in se10_wdt_probe()
231 	se10_pdev = platform_device_alloc("lenovo-se10-wdt", -1);  in se10_create_platform_device()
233 		return -ENOMEM;  in se10_create_platform_device()
244 		.ident = "LENOVO-SE10",
252 		.ident = "LENOVO-SE10",
260 		.ident = "LENOVO-SE10",
268 		.ident = "LENOVO-SE10",
276 		.ident = "LENOVO-SE10",
290 		return -ENODEV;  in se10_wdt_init()
307 MODULE_AUTHOR("Mark Pearson <mpearson-[email protected]>");