drivers/watchdog/bcm7038_wdt.c

59 	struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
62 	timeout = wdt->rate * wdog->timeout;
64 	bcm7038_wdt_write(timeout, wdt->base + WDT_TIMEOUT_REG);
69 	struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
71 	bcm7038_wdt_write(WDT_START_1, wdt->base + WDT_CMD_REG);
72 	bcm7038_wdt_write(WDT_START_2, wdt->base + WDT_CMD_REG);
87 	struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
89 	bcm7038_wdt_write(WDT_STOP_1, wdt->base + WDT_CMD_REG);
90 	bcm7038_wdt_write(WDT_STOP_2, wdt->base + WDT_CMD_REG);
108 	struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
111 	time_left = bcm7038_wdt_read(wdt->base + WDT_CMD_REG);
113 	return time_left / wdt->rate;
134 	struct bcm7038_watchdog *wdt;
138 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
139 	if (!wdt)
142 	platform_set_drvdata(pdev, wdt);
144 	wdt->base = devm_platform_ioremap_resource(pdev, 0);
145 	if (IS_ERR(wdt->base))
146 		return PTR_ERR(wdt->base);
151 	wdt->clk = devm_clk_get_enabled(dev, clk_name);
153 	if (!IS_ERR(wdt->clk)) {
154 		wdt->rate = clk_get_rate(wdt->clk);
156 		if (!wdt->rate)
157 			wdt->rate = WDT_DEFAULT_RATE;
159 		wdt->rate = WDT_DEFAULT_RATE;
160 		wdt->clk = NULL;
163 	wdt->wdd.info		= &bcm7038_wdt_info;
164 	wdt->wdd.ops		= &bcm7038_wdt_ops;
165 	wdt->wdd.min_timeout	= WDT_MIN_TIMEOUT;
166 	wdt->wdd.timeout	= WDT_DEFAULT_TIMEOUT;
167 	wdt->wdd.max_timeout	= 0xffffffff / wdt->rate;
168 	wdt->wdd.parent		= dev;
169 	watchdog_set_drvdata(&wdt->wdd, wdt);
171 	watchdog_stop_on_reboot(&wdt->wdd);
172 	watchdog_stop_on_unregister(&wdt->wdd);
173 	err = devm_watchdog_register_device(dev, &wdt->wdd);
184 	struct bcm7038_watchdog *wdt = dev_get_drvdata(dev);
186 	if (watchdog_active(&wdt->wdd))
187 		return bcm7038_wdt_stop(&wdt->wdd);
194 	struct bcm7038_watchdog *wdt = dev_get_drvdata(dev);
196 	if (watchdog_active(&wdt->wdd))
197 		return bcm7038_wdt_start(&wdt->wdd);
206 	{ .compatible = "brcm,bcm6345-wdt" },
207 	{ .compatible = "brcm,bcm7038-wdt" },
213 	{ .name = "bcm63xx-wdt" },
222 		.name		= "bcm7038-wdt",