85 static struct wdt_at32ap700x *wdt;  variable
95 	spin_lock(&wdt->io_lock);  in at32_wdt_stop()
96 	psel = wdt_readl(wdt, CTRL) & WDT_BF(CTRL_PSEL, 0x0f);  in at32_wdt_stop()
97 	wdt_writel(wdt, CTRL, psel | WDT_BF(CTRL_KEY, 0x55));  in at32_wdt_stop()
98 	wdt_writel(wdt, CTRL, psel | WDT_BF(CTRL_KEY, 0xaa));  in at32_wdt_stop()
99 	spin_unlock(&wdt->io_lock);  in at32_wdt_stop()
108 	unsigned long psel = (wdt->timeout > 1) ? 0xf : 0xe;  in at32_wdt_start()
110 	spin_lock(&wdt->io_lock);  in at32_wdt_start()
111 	wdt_writel(wdt, CTRL, WDT_BIT(CTRL_EN)  in at32_wdt_start()
114 	wdt_writel(wdt, CTRL, WDT_BIT(CTRL_EN)  in at32_wdt_start()
117 	spin_unlock(&wdt->io_lock);  in at32_wdt_start()
125 	spin_lock(&wdt->io_lock);  in at32_wdt_pat()
126 	wdt_writel(wdt, CLR, 0x42);  in at32_wdt_pat()
127 	spin_unlock(&wdt->io_lock);  in at32_wdt_pat()
135 	if (test_and_set_bit(1, &wdt->users))  in at32_wdt_open()
150 		dev_dbg(wdt->miscdev.parent,  in at32_wdt_close()
154 	clear_bit(1, &wdt->users);  in at32_wdt_close()
175 	wdt->timeout = time;  in at32_wdt_settimeout()
187 	rcause = wdt_readl(wdt, RCAUSE);  in at32_wdt_get_status()
233 		ret = put_user(wdt->boot_status, p);  in at32_wdt_ioctl()
260 		ret = put_user(wdt->timeout, p);  in at32_wdt_ioctl()
313 	if (wdt) {  in at32_wdt_probe()
324 	wdt = devm_kzalloc(&pdev->dev, sizeof(struct wdt_at32ap700x),  in at32_wdt_probe()
326 	if (!wdt)  in at32_wdt_probe()
329 	wdt->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));  in at32_wdt_probe()
330 	if (!wdt->regs) {  in at32_wdt_probe()
336 	spin_lock_init(&wdt->io_lock);  in at32_wdt_probe()
337 	wdt->boot_status = at32_wdt_get_status();  in at32_wdt_probe()
340 	if (wdt->boot_status & WDIOF_CARDRESET) {  in at32_wdt_probe()
346 		wdt->users = 0;  in at32_wdt_probe()
349 	wdt->miscdev.minor	= WATCHDOG_MINOR;  in at32_wdt_probe()
350 	wdt->miscdev.name	= "watchdog";  in at32_wdt_probe()
351 	wdt->miscdev.fops	= &at32_wdt_fops;  in at32_wdt_probe()
352 	wdt->miscdev.parent	= &pdev->dev;  in at32_wdt_probe()
354 	platform_set_drvdata(pdev, wdt);  in at32_wdt_probe()
363 	ret = misc_register(&wdt->miscdev);  in at32_wdt_probe()
371 		wdt->regs, wdt->timeout, nowayout);  in at32_wdt_probe()
376 	wdt = NULL;  in at32_wdt_probe()
382 	if (wdt && platform_get_drvdata(pdev) == wdt) {  in at32_wdt_remove()
387 		misc_deregister(&wdt->miscdev);  in at32_wdt_remove()
388 		wdt = NULL;  in at32_wdt_remove()
407 	if (wdt->users)  in at32_wdt_resume()