83 	struct sprd_wdt *wdt = (struct sprd_wdt *)dev_id;  in sprd_wdt_isr()  local
85 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_isr()
86 	writel_relaxed(SPRD_WDT_INT_CLEAR_BIT, wdt->base + SPRD_WDT_INT_CLR);  in sprd_wdt_isr()
87 	sprd_wdt_lock(wdt->base);  in sprd_wdt_isr()
88 	watchdog_notify_pretimeout(&wdt->wdd);  in sprd_wdt_isr()
92 static u32 sprd_wdt_get_cnt_value(struct sprd_wdt *wdt)  in sprd_wdt_get_cnt_value()  argument
96 	val = readl_relaxed(wdt->base + SPRD_WDT_CNT_HIGH) <<  in sprd_wdt_get_cnt_value()
98 	val |= readl_relaxed(wdt->base + SPRD_WDT_CNT_LOW) &  in sprd_wdt_get_cnt_value()
104 static int sprd_wdt_load_value(struct sprd_wdt *wdt, u32 timeout,  in sprd_wdt_load_value()  argument
111 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_load_value()
113 		      SPRD_WDT_LOW_VALUE_MASK, wdt->base + SPRD_WDT_LOAD_HIGH);  in sprd_wdt_load_value()
115 		       wdt->base + SPRD_WDT_LOAD_LOW);  in sprd_wdt_load_value()
118 		       wdt->base + SPRD_WDT_IRQ_LOAD_HIGH);  in sprd_wdt_load_value()
120 		       wdt->base + SPRD_WDT_IRQ_LOAD_LOW);  in sprd_wdt_load_value()
121 	sprd_wdt_lock(wdt->base);  in sprd_wdt_load_value()
128 		val = readl_relaxed(wdt->base + SPRD_WDT_INT_RAW);  in sprd_wdt_load_value()
140 static int sprd_wdt_enable(struct sprd_wdt *wdt)  in sprd_wdt_enable()  argument
145 	ret = clk_prepare_enable(wdt->enable);  in sprd_wdt_enable()
148 	ret = clk_prepare_enable(wdt->rtc_enable);  in sprd_wdt_enable()
150 		clk_disable_unprepare(wdt->enable);  in sprd_wdt_enable()
154 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_enable()
155 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_enable()
157 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_enable()
158 	sprd_wdt_lock(wdt->base);  in sprd_wdt_enable()
164 	struct sprd_wdt *wdt = _data;  in sprd_wdt_disable()  local
166 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_disable()
167 	writel_relaxed(0x0, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_disable()
168 	sprd_wdt_lock(wdt->base);  in sprd_wdt_disable()
170 	clk_disable_unprepare(wdt->rtc_enable);  in sprd_wdt_disable()
171 	clk_disable_unprepare(wdt->enable);  in sprd_wdt_disable()
176 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_start()  local
180 	ret = sprd_wdt_load_value(wdt, wdd->timeout, wdd->pretimeout);  in sprd_wdt_start()
184 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_start()
185 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_start()
187 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_start()
188 	sprd_wdt_lock(wdt->base);  in sprd_wdt_start()
196 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_stop()  local
199 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_stop()
200 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_stop()
203 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_stop()
204 	sprd_wdt_lock(wdt->base);  in sprd_wdt_stop()
211 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_set_timeout()  local
218 	return sprd_wdt_load_value(wdt, timeout, wdd->pretimeout);  in sprd_wdt_set_timeout()
224 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_set_pretimeout()  local
231 	return sprd_wdt_load_value(wdt, wdd->timeout, new_pretimeout);  in sprd_wdt_set_pretimeout()
236 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_get_timeleft()  local
239 	val = sprd_wdt_get_cnt_value(wdt);  in sprd_wdt_get_timeleft()
263 	struct sprd_wdt *wdt;  in sprd_wdt_probe()  local
266 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);  in sprd_wdt_probe()
267 	if (!wdt)  in sprd_wdt_probe()
270 	wdt->base = devm_platform_ioremap_resource(pdev, 0);  in sprd_wdt_probe()
271 	if (IS_ERR(wdt->base))  in sprd_wdt_probe()
272 		return PTR_ERR(wdt->base);  in sprd_wdt_probe()
274 	wdt->enable = devm_clk_get(dev, "enable");  in sprd_wdt_probe()
275 	if (IS_ERR(wdt->enable)) {  in sprd_wdt_probe()
277 		return PTR_ERR(wdt->enable);  in sprd_wdt_probe()
280 	wdt->rtc_enable = devm_clk_get(dev, "rtc_enable");  in sprd_wdt_probe()
281 	if (IS_ERR(wdt->rtc_enable)) {  in sprd_wdt_probe()
283 		return PTR_ERR(wdt->rtc_enable);  in sprd_wdt_probe()
286 	wdt->irq = platform_get_irq(pdev, 0);  in sprd_wdt_probe()
287 	if (wdt->irq < 0)  in sprd_wdt_probe()
288 		return wdt->irq;  in sprd_wdt_probe()
290 	ret = devm_request_irq(dev, wdt->irq, sprd_wdt_isr, IRQF_NO_SUSPEND,  in sprd_wdt_probe()
291 			       "sprd-wdt", (void *)wdt);  in sprd_wdt_probe()
297 	wdt->wdd.info = &sprd_wdt_info;  in sprd_wdt_probe()
298 	wdt->wdd.ops = &sprd_wdt_ops;  in sprd_wdt_probe()
299 	wdt->wdd.parent = dev;  in sprd_wdt_probe()
300 	wdt->wdd.min_timeout = SPRD_WDT_MIN_TIMEOUT;  in sprd_wdt_probe()
301 	wdt->wdd.max_timeout = SPRD_WDT_MAX_TIMEOUT;  in sprd_wdt_probe()
302 	wdt->wdd.timeout = SPRD_WDT_MAX_TIMEOUT;  in sprd_wdt_probe()
304 	ret = sprd_wdt_enable(wdt);  in sprd_wdt_probe()
306 		dev_err(dev, "failed to enable wdt\n");  in sprd_wdt_probe()
309 	ret = devm_add_action_or_reset(dev, sprd_wdt_disable, wdt);  in sprd_wdt_probe()
311 		dev_err(dev, "Failed to add wdt disable action\n");  in sprd_wdt_probe()
315 	watchdog_set_nowayout(&wdt->wdd, WATCHDOG_NOWAYOUT);  in sprd_wdt_probe()
316 	watchdog_init_timeout(&wdt->wdd, 0, dev);  in sprd_wdt_probe()
318 	ret = devm_watchdog_register_device(dev, &wdt->wdd);  in sprd_wdt_probe()
320 		sprd_wdt_disable(wdt);  in sprd_wdt_probe()
323 	platform_set_drvdata(pdev, wdt);  in sprd_wdt_probe()
330 	struct sprd_wdt *wdt = dev_get_drvdata(dev);  in sprd_wdt_pm_suspend()  local
332 	if (watchdog_active(&wdt->wdd))  in sprd_wdt_pm_suspend()
333 		sprd_wdt_stop(&wdt->wdd);  in sprd_wdt_pm_suspend()
334 	sprd_wdt_disable(wdt);  in sprd_wdt_pm_suspend()
341 	struct sprd_wdt *wdt = dev_get_drvdata(dev);  in sprd_wdt_pm_resume()  local
344 	ret = sprd_wdt_enable(wdt);  in sprd_wdt_pm_resume()
348 	if (watchdog_active(&wdt->wdd)) {  in sprd_wdt_pm_resume()
349 		ret = sprd_wdt_start(&wdt->wdd);  in sprd_wdt_pm_resume()
351 			sprd_wdt_disable(wdt);  in sprd_wdt_pm_resume()
365 	{ .compatible = "sprd,sp9860-wdt", },
373 		.name = "sprd-wdt",