62 struct nuc900_wdt {  struct
73 static struct nuc900_wdt *nuc900_wdt;  argument
79 	spin_lock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_keepalive()
81 	val = __raw_readl(nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_keepalive()
83 	__raw_writel(val, nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_keepalive()
85 	spin_unlock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_keepalive()
92 	spin_lock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_start()
94 	val = __raw_readl(nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_start()
98 	__raw_writel(val, nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_start()
100 	spin_unlock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_start()
102 	nuc900_wdt->next_heartbeat = jiffies + heartbeat * HZ;  in nuc900_wdt_start()
103 	mod_timer(&nuc900_wdt->timer, jiffies + WDT_TIMEOUT);  in nuc900_wdt_start()
110 	del_timer(&nuc900_wdt->timer);  in nuc900_wdt_stop()
112 	spin_lock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_stop()
114 	val = __raw_readl(nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_stop()
116 	__raw_writel(val, nuc900_wdt->wdt_base + REG_WTCR);  in nuc900_wdt_stop()
118 	spin_unlock(&nuc900_wdt->wdt_lock);  in nuc900_wdt_stop()
123 	nuc900_wdt->next_heartbeat = jiffies + heartbeat * HZ;  in nuc900_wdt_ping()
139 	if (nuc900_wdt->expect_close == 42)  in nuc900_wdt_close()
142 		dev_crit(&nuc900_wdt->pdev->dev,  in nuc900_wdt_close()
147 	nuc900_wdt->expect_close = 0;  in nuc900_wdt_close()
202 		nuc900_wdt->expect_close = 0;  in nuc900_wdt_write()
209 				nuc900_wdt->expect_close = 42;  in nuc900_wdt_write()
221 	if (time_before(jiffies, nuc900_wdt->next_heartbeat)) {  in nuc900_wdt_timer_ping()
223 		mod_timer(&nuc900_wdt->timer, jiffies + WDT_TIMEOUT);  in nuc900_wdt_timer_ping()
225 		dev_warn(&nuc900_wdt->pdev->dev, "Will reset the machine !\n");  in nuc900_wdt_timer_ping()
248 	nuc900_wdt = devm_kzalloc(&pdev->dev, sizeof(*nuc900_wdt),  in nuc900wdt_probe()
250 	if (!nuc900_wdt)  in nuc900wdt_probe()
253 	nuc900_wdt->pdev = pdev;  in nuc900wdt_probe()
255 	spin_lock_init(&nuc900_wdt->wdt_lock);  in nuc900wdt_probe()
258 	nuc900_wdt->wdt_base = devm_ioremap_resource(&pdev->dev, res);  in nuc900wdt_probe()
259 	if (IS_ERR(nuc900_wdt->wdt_base))  in nuc900wdt_probe()
260 		return PTR_ERR(nuc900_wdt->wdt_base);  in nuc900wdt_probe()
262 	nuc900_wdt->wdt_clock = devm_clk_get(&pdev->dev, NULL);  in nuc900wdt_probe()
263 	if (IS_ERR(nuc900_wdt->wdt_clock)) {  in nuc900wdt_probe()
265 		return PTR_ERR(nuc900_wdt->wdt_clock);  in nuc900wdt_probe()
268 	clk_enable(nuc900_wdt->wdt_clock);  in nuc900wdt_probe()
270 	setup_timer(&nuc900_wdt->timer, nuc900_wdt_timer_ping, 0);  in nuc900wdt_probe()
282 	clk_disable(nuc900_wdt->wdt_clock);  in nuc900wdt_probe()
290 	clk_disable(nuc900_wdt->wdt_clock);  in nuc900wdt_remove()