94 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_restart()  local
98 	if (wdev->ext_reset)  in imx2_wdt_restart()
104 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
112 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
113 	regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);  in imx2_wdt_restart()
123 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_setup()  local
126 	regmap_read(wdev->regmap, IMX2_WDT_WCR, &val);  in imx2_wdt_setup()
133 	if (!wdev->ext_reset)  in imx2_wdt_setup()
143 	regmap_write(wdev->regmap, IMX2_WDT_WCR, val);  in imx2_wdt_setup()
147 	regmap_write(wdev->regmap, IMX2_WDT_WCR, val);  in imx2_wdt_setup()
150 static inline bool imx2_wdt_is_running(struct imx2_wdt_device *wdev)  in imx2_wdt_is_running()  argument
154 	regmap_read(wdev->regmap, IMX2_WDT_WCR, &val);  in imx2_wdt_is_running()
161 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_ping()  local
163 	regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ1);  in imx2_wdt_ping()
164 	regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ2);  in imx2_wdt_ping()
171 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in __imx2_wdt_set_timeout()  local
173 	regmap_update_bits(wdev->regmap, IMX2_WDT_WCR, IMX2_WDT_WCR_WT,  in __imx2_wdt_set_timeout()
191 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_set_pretimeout()  local
198 	regmap_update_bits(wdev->regmap, IMX2_WDT_WICR,  in imx2_wdt_set_pretimeout()
207 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_isr()  local
209 	regmap_write_bits(wdev->regmap, IMX2_WDT_WICR,  in imx2_wdt_isr()
219 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_start()  local
221 	if (imx2_wdt_is_running(wdev))  in imx2_wdt_start()
255 	struct imx2_wdt_device *wdev;  in imx2_wdt_probe()  local
261 	wdev = devm_kzalloc(dev, sizeof(*wdev), GFP_KERNEL);  in imx2_wdt_probe()
262 	if (!wdev)  in imx2_wdt_probe()
269 	wdev->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,  in imx2_wdt_probe()
271 	if (IS_ERR(wdev->regmap)) {  in imx2_wdt_probe()
273 		return PTR_ERR(wdev->regmap);  in imx2_wdt_probe()
276 	wdev->clk = devm_clk_get(dev, NULL);  in imx2_wdt_probe()
277 	if (IS_ERR(wdev->clk)) {  in imx2_wdt_probe()
279 		return PTR_ERR(wdev->clk);  in imx2_wdt_probe()
282 	wdog			= &wdev->wdog;  in imx2_wdt_probe()
296 	ret = clk_prepare_enable(wdev->clk);  in imx2_wdt_probe()
300 	ret = devm_add_action_or_reset(dev, imx2_wdt_action, wdev->clk);  in imx2_wdt_probe()
304 	regmap_read(wdev->regmap, IMX2_WDT_WRSR, &val);  in imx2_wdt_probe()
307 	wdev->ext_reset = of_property_read_bool(dev->of_node,  in imx2_wdt_probe()
310 	watchdog_set_drvdata(wdog, wdev);  in imx2_wdt_probe()
315 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_probe()
325 	regmap_write(wdev->regmap, IMX2_WDT_WMCR, 0);  in imx2_wdt_probe()
333 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_shutdown()  local
335 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_shutdown()
350 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_suspend()  local
353 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_suspend()
362 	clk_disable_unprepare(wdev->clk);  in imx2_wdt_suspend()
371 	struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);  in imx2_wdt_resume()  local
374 	ret = clk_prepare_enable(wdev->clk);  in imx2_wdt_resume()
378 	if (watchdog_active(wdog) && !imx2_wdt_is_running(wdev)) {  in imx2_wdt_resume()
386 	if (imx2_wdt_is_running(wdev)) {  in imx2_wdt_resume()