45 struct st_wdog {  struct
102 static void st_wdog_setup(struct st_wdog *st_wdog, bool enable)  in st_wdog_setup()  argument
105 	if (st_wdog->syscfg->reset_type_reg)  in st_wdog_setup()
106 		regmap_update_bits(st_wdog->regmap,  in st_wdog_setup()
107 				   st_wdog->syscfg->reset_type_reg,  in st_wdog_setup()
108 				   st_wdog->syscfg->reset_type_mask,  in st_wdog_setup()
109 				   st_wdog->warm_reset);  in st_wdog_setup()
112 	regmap_update_bits(st_wdog->regmap,  in st_wdog_setup()
113 			   st_wdog->syscfg->enable_reg,  in st_wdog_setup()
114 			   st_wdog->syscfg->enable_mask,  in st_wdog_setup()
115 			   enable ? 0 : st_wdog->syscfg->enable_mask);  in st_wdog_setup()
118 static void st_wdog_load_timer(struct st_wdog *st_wdog, unsigned int timeout)  in st_wdog_load_timer()  argument
120 	unsigned long clkrate = st_wdog->clkrate;  in st_wdog_load_timer()
122 	writel_relaxed(timeout * clkrate, st_wdog->base + LPC_LPA_LSB_OFF);  in st_wdog_load_timer()
123 	writel_relaxed(1, st_wdog->base + LPC_LPA_START_OFF);  in st_wdog_load_timer()
128 	struct st_wdog *st_wdog = watchdog_get_drvdata(wdd);  in st_wdog_start()  local
130 	writel_relaxed(1, st_wdog->base + LPC_WDT_OFF);  in st_wdog_start()
137 	struct st_wdog *st_wdog = watchdog_get_drvdata(wdd);  in st_wdog_stop()  local
139 	writel_relaxed(0, st_wdog->base + LPC_WDT_OFF);  in st_wdog_stop()
147 	struct st_wdog *st_wdog = watchdog_get_drvdata(wdd);  in st_wdog_set_timeout()  local
150 	st_wdog_load_timer(st_wdog, timeout);  in st_wdog_set_timeout()
157 	struct st_wdog *st_wdog = watchdog_get_drvdata(wdd);  in st_wdog_keepalive()  local
159 	st_wdog_load_timer(st_wdog, wdd->timeout);  in st_wdog_keepalive()
186 	struct st_wdog *st_wdog;  in st_wdog_probe()  local
204 	st_wdog = devm_kzalloc(&pdev->dev, sizeof(*st_wdog), GFP_KERNEL);  in st_wdog_probe()
205 	if (!st_wdog)  in st_wdog_probe()
213 	st_wdog->syscfg	= (struct st_wdog_syscfg *)match->data;  in st_wdog_probe()
232 	st_wdog->dev		= &pdev->dev;  in st_wdog_probe()
233 	st_wdog->base		= base;  in st_wdog_probe()
234 	st_wdog->clk		= clk;  in st_wdog_probe()
235 	st_wdog->regmap		= regmap;  in st_wdog_probe()
236 	st_wdog->warm_reset	= of_property_read_bool(np, "st,warm_reset");  in st_wdog_probe()
237 	st_wdog->clkrate	= clk_get_rate(st_wdog->clk);  in st_wdog_probe()
239 	if (!st_wdog->clkrate) {  in st_wdog_probe()
243 	st_wdog_dev.max_timeout = 0xFFFFFFFF / st_wdog->clkrate;  in st_wdog_probe()
252 	watchdog_set_drvdata(&st_wdog_dev, st_wdog);  in st_wdog_probe()
270 	st_wdog_setup(st_wdog, true);  in st_wdog_probe()
273 		 st_wdog->warm_reset ? "warm" : "cold");  in st_wdog_probe()
280 	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);  in st_wdog_remove()  local
282 	st_wdog_setup(st_wdog, false);  in st_wdog_remove()
284 	clk_disable_unprepare(st_wdog->clk);  in st_wdog_remove()
292 	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);  in st_wdog_suspend()  local
297 	st_wdog_setup(st_wdog, false);  in st_wdog_suspend()
299 	clk_disable(st_wdog->clk);  in st_wdog_suspend()
306 	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);  in st_wdog_resume()  local
309 	ret = clk_enable(st_wdog->clk);  in st_wdog_resume()
313 		clk_unprepare(st_wdog->clk);  in st_wdog_resume()
317 	st_wdog_setup(st_wdog, true);  in st_wdog_resume()
320 		st_wdog_load_timer(st_wdog, st_wdog_dev.timeout);  in st_wdog_resume()