64 static void omap_wdt_reload(struct omap_wdt_dev *wdev)  in omap_wdt_reload()  argument
66 	void __iomem    *base = wdev->base;  in omap_wdt_reload()
72 	wdev->wdt_trgr_pattern = ~wdev->wdt_trgr_pattern;  in omap_wdt_reload()
73 	writel_relaxed(wdev->wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR));  in omap_wdt_reload()
81 static void omap_wdt_enable(struct omap_wdt_dev *wdev)  in omap_wdt_enable()  argument
83 	void __iomem *base = wdev->base;  in omap_wdt_enable()
95 static void omap_wdt_disable(struct omap_wdt_dev *wdev)  in omap_wdt_disable()  argument
97 	void __iomem *base = wdev->base;  in omap_wdt_disable()
109 static void omap_wdt_set_timer(struct omap_wdt_dev *wdev,  in omap_wdt_set_timer()  argument
113 	void __iomem *base = wdev->base;  in omap_wdt_set_timer()
126 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_start()  local
127 	void __iomem *base = wdev->base;  in omap_wdt_start()
129 	mutex_lock(&wdev->lock);  in omap_wdt_start()
131 	wdev->omap_wdt_users = true;  in omap_wdt_start()
133 	pm_runtime_get_sync(wdev->dev);  in omap_wdt_start()
140 	omap_wdt_disable(wdev);  in omap_wdt_start()
150 	omap_wdt_set_timer(wdev, wdog->timeout);  in omap_wdt_start()
151 	omap_wdt_reload(wdev); /* trigger loading of new timeout value */  in omap_wdt_start()
152 	omap_wdt_enable(wdev);  in omap_wdt_start()
154 	mutex_unlock(&wdev->lock);  in omap_wdt_start()
161 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_stop()  local
163 	mutex_lock(&wdev->lock);  in omap_wdt_stop()
164 	omap_wdt_disable(wdev);  in omap_wdt_stop()
165 	pm_runtime_put_sync(wdev->dev);  in omap_wdt_stop()
166 	wdev->omap_wdt_users = false;  in omap_wdt_stop()
167 	mutex_unlock(&wdev->lock);  in omap_wdt_stop()
173 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_ping()  local
175 	mutex_lock(&wdev->lock);  in omap_wdt_ping()
176 	omap_wdt_reload(wdev);  in omap_wdt_ping()
177 	mutex_unlock(&wdev->lock);  in omap_wdt_ping()
185 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_set_timeout()  local
187 	mutex_lock(&wdev->lock);  in omap_wdt_set_timeout()
188 	omap_wdt_disable(wdev);  in omap_wdt_set_timeout()
189 	omap_wdt_set_timer(wdev, timeout);  in omap_wdt_set_timeout()
190 	omap_wdt_enable(wdev);  in omap_wdt_set_timeout()
191 	omap_wdt_reload(wdev);  in omap_wdt_set_timeout()
193 	mutex_unlock(&wdev->lock);  in omap_wdt_set_timeout()
216 	struct omap_wdt_dev *wdev;  in omap_wdt_probe()  local
224 	wdev = devm_kzalloc(&pdev->dev, sizeof(*wdev), GFP_KERNEL);  in omap_wdt_probe()
225 	if (!wdev)  in omap_wdt_probe()
228 	wdev->omap_wdt_users	= false;  in omap_wdt_probe()
229 	wdev->dev		= &pdev->dev;  in omap_wdt_probe()
230 	wdev->wdt_trgr_pattern	= 0x1234;  in omap_wdt_probe()
231 	mutex_init(&wdev->lock);  in omap_wdt_probe()
235 	wdev->base = devm_ioremap_resource(&pdev->dev, res);  in omap_wdt_probe()
236 	if (IS_ERR(wdev->base))  in omap_wdt_probe()
237 		return PTR_ERR(wdev->base);  in omap_wdt_probe()
250 	watchdog_set_drvdata(omap_wdt, wdev);  in omap_wdt_probe()
255 	pm_runtime_enable(wdev->dev);  in omap_wdt_probe()
256 	pm_runtime_get_sync(wdev->dev);  in omap_wdt_probe()
265 	omap_wdt_disable(wdev);  in omap_wdt_probe()
269 		pm_runtime_disable(wdev->dev);  in omap_wdt_probe()
274 		readl_relaxed(wdev->base + OMAP_WATCHDOG_REV) & 0xFF,  in omap_wdt_probe()
277 	pm_runtime_put_sync(wdev->dev);  in omap_wdt_probe()
285 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_shutdown()  local
287 	mutex_lock(&wdev->lock);  in omap_wdt_shutdown()
288 	if (wdev->omap_wdt_users) {  in omap_wdt_shutdown()
289 		omap_wdt_disable(wdev);  in omap_wdt_shutdown()
290 		pm_runtime_put_sync(wdev->dev);  in omap_wdt_shutdown()
292 	mutex_unlock(&wdev->lock);  in omap_wdt_shutdown()
298 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_remove()  local
300 	pm_runtime_disable(wdev->dev);  in omap_wdt_remove()
317 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_suspend()  local
319 	mutex_lock(&wdev->lock);  in omap_wdt_suspend()
320 	if (wdev->omap_wdt_users) {  in omap_wdt_suspend()
321 		omap_wdt_disable(wdev);  in omap_wdt_suspend()
322 		pm_runtime_put_sync(wdev->dev);  in omap_wdt_suspend()
324 	mutex_unlock(&wdev->lock);  in omap_wdt_suspend()
332 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);  in omap_wdt_resume()  local
334 	mutex_lock(&wdev->lock);  in omap_wdt_resume()
335 	if (wdev->omap_wdt_users) {  in omap_wdt_resume()
336 		pm_runtime_get_sync(wdev->dev);  in omap_wdt_resume()
337 		omap_wdt_enable(wdev);  in omap_wdt_resume()
338 		omap_wdt_reload(wdev);  in omap_wdt_resume()
340 	mutex_unlock(&wdev->lock);  in omap_wdt_resume()