47 #define wdt_read(wdt, field) \  argument
48 	readl_relaxed((wdt)->reg_base + (field))
51 	writel_relaxed((val), (wdt)->reg_base + (field))
55 	struct sama5d4_wdt *wdt = watchdog_get_drvdata(wdd);  in sama5d4_wdt_start()  local
58 	reg = wdt_read(wdt, AT91_WDT_MR);  in sama5d4_wdt_start()
60 	wdt_write(wdt, AT91_WDT_MR, reg);  in sama5d4_wdt_start()
67 	struct sama5d4_wdt *wdt = watchdog_get_drvdata(wdd);  in sama5d4_wdt_stop()  local
70 	reg = wdt_read(wdt, AT91_WDT_MR);  in sama5d4_wdt_stop()
72 	wdt_write(wdt, AT91_WDT_MR, reg);  in sama5d4_wdt_stop()
79 	struct sama5d4_wdt *wdt = watchdog_get_drvdata(wdd);  in sama5d4_wdt_ping()  local
81 	wdt_write(wdt, AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT);  in sama5d4_wdt_ping()
89 	struct sama5d4_wdt *wdt = watchdog_get_drvdata(wdd);  in sama5d4_wdt_set_timeout()  local
93 	reg = wdt_read(wdt, AT91_WDT_MR);  in sama5d4_wdt_set_timeout()
98 	wdt_write(wdt, AT91_WDT_MR, reg);  in sama5d4_wdt_set_timeout()
120 	struct sama5d4_wdt *wdt = platform_get_drvdata(dev_id);  in sama5d4_wdt_irq_handler()  local
122 	if (wdt_read(wdt, AT91_WDT_SR)) {  in sama5d4_wdt_irq_handler()
131 static int of_sama5d4_wdt_init(struct device_node *np, struct sama5d4_wdt *wdt)  in of_sama5d4_wdt_init()  argument
135 	wdt->config = AT91_WDT_WDDIS;  in of_sama5d4_wdt_init()
139 		wdt->config |= AT91_WDT_WDFIEN;  in of_sama5d4_wdt_init()
141 		wdt->config |= AT91_WDT_WDRSTEN;  in of_sama5d4_wdt_init()
144 		wdt->config |= AT91_WDT_WDIDLEHLT;  in of_sama5d4_wdt_init()
147 		wdt->config |= AT91_WDT_WDDBGHLT;  in of_sama5d4_wdt_init()
152 static int sama5d4_wdt_init(struct sama5d4_wdt *wdt)  in sama5d4_wdt_init()  argument
154 	struct watchdog_device *wdd = &wdt->wdd;  in sama5d4_wdt_init()
162 	reg = wdt_read(wdt, AT91_WDT_MR);  in sama5d4_wdt_init()
164 	wdt_write(wdt, AT91_WDT_MR, reg);  in sama5d4_wdt_init()
166 	reg = wdt->config;  in sama5d4_wdt_init()
170 	wdt_write(wdt, AT91_WDT_MR, reg);  in sama5d4_wdt_init()
178 	struct sama5d4_wdt *wdt;  in sama5d4_wdt_probe()  local
184 	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);  in sama5d4_wdt_probe()
185 	if (!wdt)  in sama5d4_wdt_probe()
188 	wdd = &wdt->wdd;  in sama5d4_wdt_probe()
195 	watchdog_set_drvdata(wdd, wdt);  in sama5d4_wdt_probe()
202 	wdt->reg_base = regs;  in sama5d4_wdt_probe()
209 		ret = of_sama5d4_wdt_init(pdev->dev.of_node, wdt);  in sama5d4_wdt_probe()
214 	if ((wdt->config & AT91_WDT_WDFIEN) && irq) {  in sama5d4_wdt_probe()
231 	ret = sama5d4_wdt_init(wdt);  in sama5d4_wdt_probe()
243 	platform_set_drvdata(pdev, wdt);  in sama5d4_wdt_probe()
253 	struct sama5d4_wdt *wdt = platform_get_drvdata(pdev);  in sama5d4_wdt_remove()  local
255 	sama5d4_wdt_stop(&wdt->wdd);  in sama5d4_wdt_remove()
257 	watchdog_unregister_device(&wdt->wdd);  in sama5d4_wdt_remove()