1 // SPDX-License-Identifier: GPL-2.0+
7  *  Copyright (C) 2012-2013 Hauke Mehrtens <hauke@hauke-m.de>
52 	wdt->timer_set_ms(wdt, wdd->timeout * 1000);  in bcm47xx_wdt_hard_keepalive()
66 	wdt->timer_set(wdt, 0);  in bcm47xx_wdt_hard_stop()
75 	u32 max_timer = wdt->max_timer_ms;  in bcm47xx_wdt_hard_set_timeout()
80 		return -EINVAL;  in bcm47xx_wdt_hard_set_timeout()
83 	wdd->timeout = new_time;  in bcm47xx_wdt_hard_set_timeout()
92 	wdt->timer_set(wdt, 1);  in bcm47xx_wdt_restart()
99 	.start		= bcm47xx_wdt_hard_start,
109 	u32 next_tick = min(wdt->wdd.timeout * 1000, wdt->max_timer_ms);  in bcm47xx_wdt_soft_timer_tick()
111 	if (!atomic_dec_and_test(&wdt->soft_ticks)) {  in bcm47xx_wdt_soft_timer_tick()
112 		wdt->timer_set_ms(wdt, next_tick);  in bcm47xx_wdt_soft_timer_tick()
113 		mod_timer(&wdt->soft_timer, jiffies + HZ);  in bcm47xx_wdt_soft_timer_tick()
123 	atomic_set(&wdt->soft_ticks, wdd->timeout);  in bcm47xx_wdt_soft_keepalive()
133 	bcm47xx_wdt_soft_timer_tick(&wdt->soft_timer);  in bcm47xx_wdt_soft_start()
142 	timer_delete_sync(&wdt->soft_timer);  in bcm47xx_wdt_soft_stop()
143 	wdt->timer_set(wdt, 0);  in bcm47xx_wdt_soft_stop()
154 		return -EINVAL;  in bcm47xx_wdt_soft_set_timeout()
157 	wdd->timeout = new_time;  in bcm47xx_wdt_soft_set_timeout()
170 	.start		= bcm47xx_wdt_soft_start,
180 	bool soft;  in bcm47xx_wdt_probe()  local
181 	struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);  in bcm47xx_wdt_probe()
184 		return -ENXIO;  in bcm47xx_wdt_probe()
186 	soft = wdt->max_timer_ms < WDT_SOFTTIMER_THRESHOLD * 1000;  in bcm47xx_wdt_probe()
188 	if (soft) {  in bcm47xx_wdt_probe()
189 		wdt->wdd.ops = &bcm47xx_wdt_soft_ops;  in bcm47xx_wdt_probe()
190 		timer_setup(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick, 0);  in bcm47xx_wdt_probe()
192 		wdt->wdd.ops = &bcm47xx_wdt_hard_ops;  in bcm47xx_wdt_probe()
195 	wdt->wdd.info = &bcm47xx_wdt_info;  in bcm47xx_wdt_probe()
196 	wdt->wdd.timeout = WDT_DEFAULT_TIME;  in bcm47xx_wdt_probe()
197 	wdt->wdd.parent = &pdev->dev;  in bcm47xx_wdt_probe()
198 	ret = wdt->wdd.ops->set_timeout(&wdt->wdd, timeout);  in bcm47xx_wdt_probe()
201 	watchdog_set_nowayout(&wdt->wdd, nowayout);  in bcm47xx_wdt_probe()
202 	watchdog_set_restart_priority(&wdt->wdd, 64);  in bcm47xx_wdt_probe()
203 	watchdog_stop_on_reboot(&wdt->wdd);  in bcm47xx_wdt_probe()
205 	ret = devm_watchdog_register_device(&pdev->dev, &wdt->wdd);  in bcm47xx_wdt_probe()
209 	dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",  in bcm47xx_wdt_probe()
211 		soft ? ", Software Timer" : "");  in bcm47xx_wdt_probe()
215 	if (soft)  in bcm47xx_wdt_probe()
216 		timer_delete_sync(&wdt->soft_timer);  in bcm47xx_wdt_probe()
223 		.name	= "bcm47xx-wdt",
231 MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");