55 static void __iomem *wdt_addr(struct qcom_wdt *wdt, enum wdt_reg reg)  in wdt_addr()  argument
57 	return wdt->base + wdt->layout[reg];  in wdt_addr()
68 	struct qcom_wdt *wdt = to_qcom_wdt(wdd);  in qcom_wdt_start()  local
70 	writel(0, wdt_addr(wdt, WDT_EN));  in qcom_wdt_start()
71 	writel(1, wdt_addr(wdt, WDT_RST));  in qcom_wdt_start()
72 	writel(wdd->timeout * wdt->rate, wdt_addr(wdt, WDT_BARK_TIME));  in qcom_wdt_start()
73 	writel(wdd->timeout * wdt->rate, wdt_addr(wdt, WDT_BITE_TIME));  in qcom_wdt_start()
74 	writel(1, wdt_addr(wdt, WDT_EN));  in qcom_wdt_start()
80 	struct qcom_wdt *wdt = to_qcom_wdt(wdd);  in qcom_wdt_stop()  local
82 	writel(0, wdt_addr(wdt, WDT_EN));  in qcom_wdt_stop()
88 	struct qcom_wdt *wdt = to_qcom_wdt(wdd);  in qcom_wdt_ping()  local
90 	writel(1, wdt_addr(wdt, WDT_RST));  in qcom_wdt_ping()
104 	struct qcom_wdt *wdt = to_qcom_wdt(wdd);  in qcom_wdt_restart()  local
109 	 *    Setup BITE_TIME to be 128ms, and enable WDT.  in qcom_wdt_restart()
111 	timeout = 128 * wdt->rate / 1000;  in qcom_wdt_restart()
113 	writel(0, wdt_addr(wdt, WDT_EN));  in qcom_wdt_restart()
114 	writel(1, wdt_addr(wdt, WDT_RST));  in qcom_wdt_restart()
115 	writel(timeout, wdt_addr(wdt, WDT_BARK_TIME));  in qcom_wdt_restart()
116 	writel(timeout, wdt_addr(wdt, WDT_BITE_TIME));  in qcom_wdt_restart()
117 	writel(1, wdt_addr(wdt, WDT_EN));  in qcom_wdt_restart()
147 	struct qcom_wdt *wdt;  in qcom_wdt_probe()  local
156 		dev_err(&pdev->dev, "Unsupported QCOM WDT module\n");  in qcom_wdt_probe()
160 	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);  in qcom_wdt_probe()
161 	if (!wdt)  in qcom_wdt_probe()
175 	wdt->base = devm_ioremap_resource(&pdev->dev, res);  in qcom_wdt_probe()
176 	if (IS_ERR(wdt->base))  in qcom_wdt_probe()
177 		return PTR_ERR(wdt->base);  in qcom_wdt_probe()
179 	wdt->clk = devm_clk_get(&pdev->dev, NULL);  in qcom_wdt_probe()
180 	if (IS_ERR(wdt->clk)) {  in qcom_wdt_probe()
182 		return PTR_ERR(wdt->clk);  in qcom_wdt_probe()
185 	ret = clk_prepare_enable(wdt->clk);  in qcom_wdt_probe()
195 	 * WATCHDOG_CORE assumes units of seconds, if the WDT is clocked such  in qcom_wdt_probe()
199 	wdt->rate = clk_get_rate(wdt->clk);  in qcom_wdt_probe()
200 	if (wdt->rate == 0 ||  in qcom_wdt_probe()
201 	    wdt->rate > 0x10000000U) {  in qcom_wdt_probe()
207 	wdt->wdd.info = &qcom_wdt_info;  in qcom_wdt_probe()
208 	wdt->wdd.ops = &qcom_wdt_ops;  in qcom_wdt_probe()
209 	wdt->wdd.min_timeout = 1;  in qcom_wdt_probe()
210 	wdt->wdd.max_timeout = 0x10000000U / wdt->rate;  in qcom_wdt_probe()
211 	wdt->wdd.parent = &pdev->dev;  in qcom_wdt_probe()
212 	wdt->layout = regs;  in qcom_wdt_probe()
214 	if (readl(wdt_addr(wdt, WDT_STS)) & 1)  in qcom_wdt_probe()
215 		wdt->wdd.bootstatus = WDIOF_CARDRESET;  in qcom_wdt_probe()
222 	wdt->wdd.timeout = min(wdt->wdd.max_timeout, 30U);  in qcom_wdt_probe()
223 	watchdog_init_timeout(&wdt->wdd, 0, &pdev->dev);  in qcom_wdt_probe()
225 	ret = watchdog_register_device(&wdt->wdd);  in qcom_wdt_probe()
231 	platform_set_drvdata(pdev, wdt);  in qcom_wdt_probe()
235 	clk_disable_unprepare(wdt->clk);  in qcom_wdt_probe()
241 	struct qcom_wdt *wdt = platform_get_drvdata(pdev);  in qcom_wdt_remove()  local
243 	watchdog_unregister_device(&wdt->wdd);  in qcom_wdt_remove()
244 	clk_disable_unprepare(wdt->clk);  in qcom_wdt_remove()
251 	{ .compatible = "qcom,kpss-wdt", .data = reg_offset_data_kpss },