84 	struct sprd_wdt *wdt = (struct sprd_wdt *)dev_id;  in sprd_wdt_isr()  local
86 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_isr()
87 	writel_relaxed(SPRD_WDT_INT_CLEAR_BIT, wdt->base + SPRD_WDT_INT_CLR);  in sprd_wdt_isr()
88 	sprd_wdt_lock(wdt->base);  in sprd_wdt_isr()
89 	watchdog_notify_pretimeout(&wdt->wdd);  in sprd_wdt_isr()
93 static u32 sprd_wdt_get_cnt_value(struct sprd_wdt *wdt)  in sprd_wdt_get_cnt_value()  argument
97 	val = readl_relaxed(wdt->base + SPRD_WDT_CNT_HIGH) <<  in sprd_wdt_get_cnt_value()
99 	val |= readl_relaxed(wdt->base + SPRD_WDT_CNT_LOW) &  in sprd_wdt_get_cnt_value()
105 static int sprd_wdt_load_value(struct sprd_wdt *wdt, u32 timeout,  in sprd_wdt_load_value()  argument
119 		val = readl_relaxed(wdt->base + SPRD_WDT_INT_RAW);  in sprd_wdt_load_value()
129 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_load_value()
131 		      SPRD_WDT_LOW_VALUE_MASK, wdt->base + SPRD_WDT_LOAD_HIGH);  in sprd_wdt_load_value()
133 		       wdt->base + SPRD_WDT_LOAD_LOW);  in sprd_wdt_load_value()
136 		       wdt->base + SPRD_WDT_IRQ_LOAD_HIGH);  in sprd_wdt_load_value()
138 		       wdt->base + SPRD_WDT_IRQ_LOAD_LOW);  in sprd_wdt_load_value()
139 	sprd_wdt_lock(wdt->base);  in sprd_wdt_load_value()
144 static int sprd_wdt_enable(struct sprd_wdt *wdt)  in sprd_wdt_enable()  argument
149 	ret = clk_prepare_enable(wdt->enable);  in sprd_wdt_enable()
152 	ret = clk_prepare_enable(wdt->rtc_enable);  in sprd_wdt_enable()
154 		clk_disable_unprepare(wdt->enable);  in sprd_wdt_enable()
158 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_enable()
159 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_enable()
161 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_enable()
162 	sprd_wdt_lock(wdt->base);  in sprd_wdt_enable()
168 	struct sprd_wdt *wdt = _data;  in sprd_wdt_disable()  local
170 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_disable()
171 	writel_relaxed(0x0, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_disable()
172 	sprd_wdt_lock(wdt->base);  in sprd_wdt_disable()
174 	clk_disable_unprepare(wdt->rtc_enable);  in sprd_wdt_disable()
175 	clk_disable_unprepare(wdt->enable);  in sprd_wdt_disable()
180 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_start()  local
184 	ret = sprd_wdt_load_value(wdt, wdd->timeout, wdd->pretimeout);  in sprd_wdt_start()
188 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_start()
189 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_start()
191 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_start()
192 	sprd_wdt_lock(wdt->base);  in sprd_wdt_start()
200 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_stop()  local
203 	sprd_wdt_unlock(wdt->base);  in sprd_wdt_stop()
204 	val = readl_relaxed(wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_stop()
207 	writel_relaxed(val, wdt->base + SPRD_WDT_CTRL);  in sprd_wdt_stop()
208 	sprd_wdt_lock(wdt->base);  in sprd_wdt_stop()
215 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_set_timeout()  local
222 	return sprd_wdt_load_value(wdt, timeout, wdd->pretimeout);  in sprd_wdt_set_timeout()
228 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_set_pretimeout()  local
235 	return sprd_wdt_load_value(wdt, wdd->timeout, new_pretimeout);  in sprd_wdt_set_pretimeout()
240 	struct sprd_wdt *wdt = to_sprd_wdt(wdd);  in sprd_wdt_get_timeleft()  local
243 	val = sprd_wdt_get_cnt_value(wdt);  in sprd_wdt_get_timeleft()
267 	struct sprd_wdt *wdt;  in sprd_wdt_probe()  local
270 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);  in sprd_wdt_probe()
271 	if (!wdt)  in sprd_wdt_probe()
274 	wdt->base = devm_platform_ioremap_resource(pdev, 0);  in sprd_wdt_probe()
275 	if (IS_ERR(wdt->base))  in sprd_wdt_probe()
276 		return PTR_ERR(wdt->base);  in sprd_wdt_probe()
278 	wdt->enable = devm_clk_get(dev, "enable");  in sprd_wdt_probe()
279 	if (IS_ERR(wdt->enable)) {  in sprd_wdt_probe()
281 		return PTR_ERR(wdt->enable);  in sprd_wdt_probe()
284 	wdt->rtc_enable = devm_clk_get(dev, "rtc_enable");  in sprd_wdt_probe()
285 	if (IS_ERR(wdt->rtc_enable)) {  in sprd_wdt_probe()
287 		return PTR_ERR(wdt->rtc_enable);  in sprd_wdt_probe()
290 	wdt->irq = platform_get_irq(pdev, 0);  in sprd_wdt_probe()
291 	if (wdt->irq < 0)  in sprd_wdt_probe()
292 		return wdt->irq;  in sprd_wdt_probe()
294 	ret = devm_request_irq(dev, wdt->irq, sprd_wdt_isr, IRQF_NO_SUSPEND,  in sprd_wdt_probe()
295 			       "sprd-wdt", (void *)wdt);  in sprd_wdt_probe()
301 	wdt->wdd.info = &sprd_wdt_info;  in sprd_wdt_probe()
302 	wdt->wdd.ops = &sprd_wdt_ops;  in sprd_wdt_probe()
303 	wdt->wdd.parent = dev;  in sprd_wdt_probe()
304 	wdt->wdd.min_timeout = SPRD_WDT_MIN_TIMEOUT;  in sprd_wdt_probe()
305 	wdt->wdd.max_timeout = SPRD_WDT_MAX_TIMEOUT;  in sprd_wdt_probe()
306 	wdt->wdd.timeout = SPRD_WDT_MAX_TIMEOUT;  in sprd_wdt_probe()
308 	ret = sprd_wdt_enable(wdt);  in sprd_wdt_probe()
310 		dev_err(dev, "failed to enable wdt\n");  in sprd_wdt_probe()
313 	ret = devm_add_action_or_reset(dev, sprd_wdt_disable, wdt);  in sprd_wdt_probe()
315 		dev_err(dev, "Failed to add wdt disable action\n");  in sprd_wdt_probe()
319 	watchdog_set_nowayout(&wdt->wdd, WATCHDOG_NOWAYOUT);  in sprd_wdt_probe()
320 	watchdog_init_timeout(&wdt->wdd, 0, dev);  in sprd_wdt_probe()
322 	ret = devm_watchdog_register_device(dev, &wdt->wdd);  in sprd_wdt_probe()
324 		sprd_wdt_disable(wdt);  in sprd_wdt_probe()
327 	platform_set_drvdata(pdev, wdt);  in sprd_wdt_probe()
334 	struct sprd_wdt *wdt = dev_get_drvdata(dev);  in sprd_wdt_pm_suspend()  local
336 	if (watchdog_active(&wdt->wdd))  in sprd_wdt_pm_suspend()
337 		sprd_wdt_stop(&wdt->wdd);  in sprd_wdt_pm_suspend()
338 	sprd_wdt_disable(wdt);  in sprd_wdt_pm_suspend()
345 	struct sprd_wdt *wdt = dev_get_drvdata(dev);  in sprd_wdt_pm_resume()  local
348 	ret = sprd_wdt_enable(wdt);  in sprd_wdt_pm_resume()
352 	if (watchdog_active(&wdt->wdd))  in sprd_wdt_pm_resume()
353 		ret = sprd_wdt_start(&wdt->wdd);  in sprd_wdt_pm_resume()
364 	{ .compatible = "sprd,sp9860-wdt", },
372 		.name = "sprd-wdt",