1 // SPDX-License-Identifier: GPL-2.0+
19 /* default timeout (secs) */
22 static unsigned int timeout;  variable
23 module_param(timeout, uint, 0);
24 MODULE_PARM_DESC(timeout,
25 	"Watchdog timeout in seconds. (1<=timeout<=4096, default="
39 	iowrite8(0x81, priv->io_base + TQMX86_WDCS);  in tqmx86_wdt_start()
52 	iowrite8(val, priv->io_base + TQMX86_WDCFG);  in tqmx86_wdt_set_timeout()
54 	wdd->timeout = t;  in tqmx86_wdt_set_timeout()
73 	struct device *dev = &pdev->dev;  in tqmx86_wdt_probe()
80 		return -ENOMEM;  in tqmx86_wdt_probe()
84 		return -ENODEV;  in tqmx86_wdt_probe()
86 	priv->io_base = devm_ioport_map(dev, res->start, resource_size(res));  in tqmx86_wdt_probe()
87 	if (!priv->io_base)  in tqmx86_wdt_probe()
88 		return -ENOMEM;  in tqmx86_wdt_probe()
90 	watchdog_set_drvdata(&priv->wdd, priv);  in tqmx86_wdt_probe()
92 	priv->wdd.parent = dev;  in tqmx86_wdt_probe()
93 	priv->wdd.info = &tqmx86_wdt_info;  in tqmx86_wdt_probe()
94 	priv->wdd.ops = &tqmx86_wdt_ops;  in tqmx86_wdt_probe()
95 	priv->wdd.min_timeout = 1;  in tqmx86_wdt_probe()
96 	priv->wdd.max_timeout = 4096;  in tqmx86_wdt_probe()
97 	priv->wdd.max_hw_heartbeat_ms = 4096*1000;  in tqmx86_wdt_probe()
98 	priv->wdd.timeout = WDT_TIMEOUT;  in tqmx86_wdt_probe()
100 	watchdog_init_timeout(&priv->wdd, timeout, dev);  in tqmx86_wdt_probe()
101 	watchdog_set_nowayout(&priv->wdd, WATCHDOG_NOWAYOUT);  in tqmx86_wdt_probe()
103 	tqmx86_wdt_set_timeout(&priv->wdd, priv->wdd.timeout);  in tqmx86_wdt_probe()
105 	err = devm_watchdog_register_device(dev, &priv->wdd);  in tqmx86_wdt_probe()
116 		.name	= "tqmx86-wdt",
125 MODULE_ALIAS("platform:tqmx86-wdt");