83 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_start()  local
87 	pm_runtime_get_sync(wdt->dev);  in sh_wdt_start()
88 	clk_enable(wdt->clk);  in sh_wdt_start()
90 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_start()
93 	mod_timer(&wdt->timer, next_ping_period(clock_division_ratio));  in sh_wdt_start()
119 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_start()
126 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_stop()  local
130 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_stop()
132 	del_timer(&wdt->timer);  in sh_wdt_stop()
138 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_stop()
140 	clk_disable(wdt->clk);  in sh_wdt_stop()
141 	pm_runtime_put_sync(wdt->dev);  in sh_wdt_stop()
148 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_keepalive()  local
151 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_keepalive()
153 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_keepalive()
160 	struct sh_wdt *wdt = watchdog_get_drvdata(wdt_dev);  in sh_wdt_set_heartbeat()  local
166 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_set_heartbeat()
169 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_set_heartbeat()
176 	struct sh_wdt *wdt = from_timer(wdt, t, timer);  in sh_wdt_ping()  local
179 	spin_lock_irqsave(&wdt->lock, flags);  in sh_wdt_ping()
189 		mod_timer(&wdt->timer, next_ping_period(clock_division_ratio));  in sh_wdt_ping()
191 		dev_warn(wdt->dev, "Heartbeat lost! Will not ping "  in sh_wdt_ping()
193 	spin_unlock_irqrestore(&wdt->lock, flags);  in sh_wdt_ping()
218 	struct sh_wdt *wdt;  in sh_wdt_probe()  local
228 	wdt = devm_kzalloc(&pdev->dev, sizeof(struct sh_wdt), GFP_KERNEL);  in sh_wdt_probe()
229 	if (unlikely(!wdt))  in sh_wdt_probe()
232 	wdt->dev = &pdev->dev;  in sh_wdt_probe()
234 	wdt->clk = devm_clk_get(&pdev->dev, NULL);  in sh_wdt_probe()
235 	if (IS_ERR(wdt->clk)) {  in sh_wdt_probe()
240 		wdt->clk = NULL;  in sh_wdt_probe()
243 	wdt->base = devm_platform_ioremap_resource(pdev, 0);  in sh_wdt_probe()
244 	if (IS_ERR(wdt->base))  in sh_wdt_probe()
245 		return PTR_ERR(wdt->base);  in sh_wdt_probe()
248 	watchdog_set_drvdata(&sh_wdt_dev, wdt);  in sh_wdt_probe()
251 	spin_lock_init(&wdt->lock);  in sh_wdt_probe()
272 	timer_setup(&wdt->timer, sh_wdt_ping, 0);  in sh_wdt_probe()
273 	wdt->timer.expires	= next_ping_period(clock_division_ratio);  in sh_wdt_probe()