drivers/watchdog/rtd119x_wdt.c

35 	struct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);
38 	val = readl_relaxed(data->base + RTD119X_TCWCR);
41 	writel(val, data->base + RTD119X_TCWCR);
48 	struct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);
51 	val = readl_relaxed(data->base + RTD119X_TCWCR);
54 	writel(val, data->base + RTD119X_TCWCR);
61 	struct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);
63 	writel_relaxed(RTD119X_TCWTR_WDCLR, data->base + RTD119X_TCWTR);
70 	struct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);
72 	writel(val * clk_get_rate(data->clk), data->base + RTD119X_TCWOV);
74 	data->wdt_dev.timeout = val;
100 	struct rtd119x_watchdog_device *data;
102 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
103 	if (!data)
106 	data->base = devm_platform_ioremap_resource(pdev, 0);
107 	if (IS_ERR(data->base))
108 		return PTR_ERR(data->base);
110 	data->clk = devm_clk_get_enabled(dev, NULL);
111 	if (IS_ERR(data->clk))
112 		return PTR_ERR(data->clk);
114 	data->wdt_dev.info = &rtd119x_wdt_info;
115 	data->wdt_dev.ops = &rtd119x_wdt_ops;
116 	data->wdt_dev.timeout = 120;
117 	data->wdt_dev.max_timeout = 0xffffffff / clk_get_rate(data->clk);
118 	data->wdt_dev.min_timeout = 1;
119 	data->wdt_dev.parent = dev;
121 	watchdog_stop_on_reboot(&data->wdt_dev);
122 	watchdog_set_drvdata(&data->wdt_dev, data);
123 	platform_set_drvdata(pdev, data);
125 	writel_relaxed(RTD119X_TCWTR_WDCLR, data->base + RTD119X_TCWTR);
126 	rtd119x_wdt_set_timeout(&data->wdt_dev, data->wdt_dev.timeout);
127 	rtd119x_wdt_stop(&data->wdt_dev);
129 	return devm_watchdog_register_device(dev, &data->wdt_dev);