79 	struct watchdog_device	wdd;  member
97 static int stm32_iwdg_start(struct watchdog_device *wdd)  in stm32_iwdg_start()  argument
99 	struct stm32_iwdg *wdt = watchdog_get_drvdata(wdd);  in stm32_iwdg_start()
103 	dev_dbg(wdd->parent, "%s\n", __func__);  in stm32_iwdg_start()
105 	if (!wdd->pretimeout)  in stm32_iwdg_start()
106 		wdd->pretimeout = 3 * wdd->timeout / 4;  in stm32_iwdg_start()
108 	tout = clamp_t(unsigned int, wdd->timeout,  in stm32_iwdg_start()
109 		       wdd->min_timeout, wdd->max_hw_heartbeat_ms / 1000);  in stm32_iwdg_start()
110 	ptot = clamp_t(unsigned int, tout - wdd->pretimeout,  in stm32_iwdg_start()
111 		       wdd->min_timeout, tout);  in stm32_iwdg_start()
136 		dev_err(wdd->parent, "Fail to set prescaler, reload regs\n");  in stm32_iwdg_start()
146 static int stm32_iwdg_ping(struct watchdog_device *wdd)  in stm32_iwdg_ping()  argument
148 	struct stm32_iwdg *wdt = watchdog_get_drvdata(wdd);  in stm32_iwdg_ping()
150 	dev_dbg(wdd->parent, "%s\n", __func__);  in stm32_iwdg_ping()
158 static int stm32_iwdg_set_timeout(struct watchdog_device *wdd,  in stm32_iwdg_set_timeout()  argument
161 	dev_dbg(wdd->parent, "%s timeout: %d sec\n", __func__, timeout);  in stm32_iwdg_set_timeout()
163 	wdd->timeout = timeout;  in stm32_iwdg_set_timeout()
165 	if (watchdog_active(wdd))  in stm32_iwdg_set_timeout()
166 		return stm32_iwdg_start(wdd);  in stm32_iwdg_set_timeout()
171 static int stm32_iwdg_set_pretimeout(struct watchdog_device *wdd,  in stm32_iwdg_set_pretimeout()  argument
174 	dev_dbg(wdd->parent, "%s pretimeout: %d sec\n", __func__, pretimeout);  in stm32_iwdg_set_pretimeout()
176 	wdd->pretimeout = pretimeout;  in stm32_iwdg_set_pretimeout()
178 	if (watchdog_active(wdd))  in stm32_iwdg_set_pretimeout()
179 		return stm32_iwdg_start(wdd);  in stm32_iwdg_set_pretimeout()
186 	struct watchdog_device *wdd = wdog_arg;  in stm32_iwdg_isr()  local
187 	struct stm32_iwdg *wdt = watchdog_get_drvdata(wdd);  in stm32_iwdg_isr()
194 	watchdog_notify_pretimeout(wdd);  in stm32_iwdg_isr()
282 	struct watchdog_device *wdd = &wdt->wdd;  in stm32_iwdg_irq_init()  local
304 			       dev_name(dev), wdd);  in stm32_iwdg_irq_init()
308 	wdd->info = &stm32_iwdg_preinfo;  in stm32_iwdg_irq_init()
315 	struct watchdog_device *wdd;  in stm32_iwdg_probe()  local
337 	wdd = &wdt->wdd;  in stm32_iwdg_probe()
338 	wdd->parent = dev;  in stm32_iwdg_probe()
339 	wdd->info = &stm32_iwdg_info;  in stm32_iwdg_probe()
340 	wdd->ops = &stm32_iwdg_ops;  in stm32_iwdg_probe()
341 	wdd->timeout = DEFAULT_TIMEOUT;  in stm32_iwdg_probe()
342 	wdd->min_timeout = DIV_ROUND_UP((RLR_MIN + 1) * PR_MIN, wdt->rate);  in stm32_iwdg_probe()
343 	wdd->max_hw_heartbeat_ms = ((RLR_MAX + 1) * wdt->data->max_prescaler *  in stm32_iwdg_probe()
346 	/* Initialize IRQ, this might override wdd->info, hence it is here. */  in stm32_iwdg_probe()
351 	watchdog_set_drvdata(wdd, wdt);  in stm32_iwdg_probe()
352 	watchdog_set_nowayout(wdd, WATCHDOG_NOWAYOUT);  in stm32_iwdg_probe()
353 	watchdog_init_timeout(wdd, 0, dev);  in stm32_iwdg_probe()
365 		ret = stm32_iwdg_start(wdd);  in stm32_iwdg_probe()
370 		set_bit(WDOG_HW_RUNNING, &wdd->status);  in stm32_iwdg_probe()
373 	ret = devm_watchdog_register_device(dev, wdd);  in stm32_iwdg_probe()