87 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_start()  local
91 	pm_runtime_get_sync(wdt->dev);  in sh_wdt_start()
92 	clk_enable(wdt->clk);  in sh_wdt_start()
94 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_start()
97 	mod_timer(&wdt->timer, next_ping_period(clock_division_ratio));  in sh_wdt_start()
123 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_start()
130 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_stop()  local
134 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_stop()
136 	del_timer(&wdt->timer);  in sh_wdt_stop()
142 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_stop()
144 	clk_disable(wdt->clk);  in sh_wdt_stop()
145 	pm_runtime_put_sync(wdt->dev);  in sh_wdt_stop()
152 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_keepalive()  local
155 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_keepalive()
157 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_keepalive()
164 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_set_heartbeat()  local
170 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_set_heartbeat()
173 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_set_heartbeat()
180 	struct sh_wdt *wdt = (struct sh_wdt *)data;  in sh_wdt_ping()  local
183 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_ping()
193 		mod_timer(&wdt->timer, next_ping_period(clock_division_ratio));  in sh_wdt_ping()
195 		dev_warn(wdt->dev, "Heartbeat lost! Will not ping "  in sh_wdt_ping()
197 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_ping()
222 	struct sh_wdt *wdt;  in sh_wdt_probe()  local
233 	wdt = devm_kzalloc(&pdev->dev, sizeof(struct sh_wdt), GFP_KERNEL);  in sh_wdt_probe()
234 	if (unlikely(!wdt))  in sh_wdt_probe()
237 	wdt->dev = &pdev->dev;  in sh_wdt_probe()
239 	wdt->clk = devm_clk_get(&pdev->dev, NULL);  in sh_wdt_probe()
240 	if (IS_ERR(wdt->clk)) {  in sh_wdt_probe()
245 		wdt->clk = NULL;  in sh_wdt_probe()
249 	wdt->base = devm_ioremap_resource(wdt->dev, res);  in sh_wdt_probe()
250 	if (IS_ERR(wdt->base))  in sh_wdt_probe()
251 		return PTR_ERR(wdt->base);  in sh_wdt_probe()
254 	watchdog_set_drvdata(&sh_wdt_dev, wdt);  in sh_wdt_probe()
256 	spin_lock_init(&wdt->lock);  in sh_wdt_probe()
277 	init_timer(&wdt->timer);  in sh_wdt_probe()
278 	wdt->timer.function	= sh_wdt_ping;  in sh_wdt_probe()
279 	wdt->timer.data		= (unsigned long)wdt;  in sh_wdt_probe()
280 	wdt->timer.expires	= next_ping_period(clock_division_ratio);  in sh_wdt_probe()