103 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_restart()  local
107 	if (wdev->ext_reset)  in imx2_wdt_restart()
113 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
121 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
122 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
132 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_setup()  local
135 	regmap_read(wdev->regmap, IMX2_WDT_WCR, &val);  in imx2_wdt_setup()
140 	if (wdev->sleep_wait)  in imx2_wdt_setup()
145 	if (!wdev->ext_reset)  in imx2_wdt_setup()
155 	regmap_write(wdev->regmap, IMX2_WDT_WCR, val);  in imx2_wdt_setup()
159 	regmap_write(wdev->regmap, IMX2_WDT_WCR, val);  in imx2_wdt_setup()
162 static inline bool imx2_wdt_is_running(struct imx2_wdt_device *wdev)  in imx2_wdt_is_running()  argument
166 	regmap_read(wdev->regmap, IMX2_WDT_WCR, &val);  in imx2_wdt_is_running()
173 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_ping()  local
175 	if (!wdev->clk_is_on)  in imx2_wdt_ping()
178 	regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ1);  in imx2_wdt_ping()
179 	regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ2);  in imx2_wdt_ping()
186 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in __imx2_wdt_set_timeout()  local
188 	regmap_update_bits(wdev->regmap, IMX2_WDT_WCR, IMX2_WDT_WCR_WT,  in __imx2_wdt_set_timeout()
206 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_set_pretimeout()  local
213 	regmap_update_bits(wdev->regmap, IMX2_WDT_WICR,  in imx2_wdt_set_pretimeout()
222 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_isr()  local
224 	regmap_write_bits(wdev->regmap, IMX2_WDT_WICR,  in imx2_wdt_isr()
234 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_start()  local
236 	if (imx2_wdt_is_running(wdev))  in imx2_wdt_start()
270 	struct imx2_wdt_device *wdev;  in imx2_wdt_probe()  local
276 	wdev = devm_kzalloc(dev, sizeof(*wdev), GFP_KERNEL);  in imx2_wdt_probe()
277 	if (!wdev)  in imx2_wdt_probe()
284 	wdev->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,  in imx2_wdt_probe()
286 	if (IS_ERR(wdev->regmap)) {  in imx2_wdt_probe()
288 		return PTR_ERR(wdev->regmap);  in imx2_wdt_probe()
291 	wdev->clk = devm_clk_get(dev, NULL);  in imx2_wdt_probe()
292 	if (IS_ERR(wdev->clk)) {  in imx2_wdt_probe()
294 		return PTR_ERR(wdev->clk);  in imx2_wdt_probe()
297 	wdog			= &wdev->wdog;  in imx2_wdt_probe()
305 	wdev->data = of_device_get_match_data(dev);  in imx2_wdt_probe()
313 	ret = clk_prepare_enable(wdev->clk);  in imx2_wdt_probe()
317 	ret = devm_add_action_or_reset(dev, imx2_wdt_action, wdev->clk);  in imx2_wdt_probe()
321 	wdev->clk_is_on = true;  in imx2_wdt_probe()
323 	regmap_read(wdev->regmap, IMX2_WDT_WRSR, &val);  in imx2_wdt_probe()
326 	wdev->ext_reset = of_property_read_bool(dev->of_node,  in imx2_wdt_probe()
330 		if (!wdev->data->wdw_supported) {  in imx2_wdt_probe()
334 		wdev->sleep_wait = true;  in imx2_wdt_probe()
341 	wdev->no_ping = !of_device_is_compatible(dev->of_node, "fsl,imx7d-wdt");  in imx2_wdt_probe()
343 	watchdog_set_drvdata(wdog, wdev);  in imx2_wdt_probe()
347 	if (wdev->no_ping)  in imx2_wdt_probe()
350 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_probe()
360 	regmap_write(wdev->regmap, IMX2_WDT_WMCR, 0);  in imx2_wdt_probe()
368 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_shutdown()  local
370 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_shutdown()
385 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_suspend()  local
388 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_suspend()
397 	if (wdev->no_ping) {  in imx2_wdt_suspend()
398 		clk_disable_unprepare(wdev->clk);  in imx2_wdt_suspend()
400 		wdev->clk_is_on = false;  in imx2_wdt_suspend()
410 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_resume()  local
413 	if (wdev->no_ping) {  in imx2_wdt_resume()
414 		ret = clk_prepare_enable(wdev->clk);  in imx2_wdt_resume()
419 		wdev->clk_is_on = true;  in imx2_wdt_resume()
422 	if (watchdog_active(wdog) && !imx2_wdt_is_running(wdev)) {  in imx2_wdt_resume()
430 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_resume()