drivers/watchdog/it87_wdt.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
4  *	   for ITE IT87xx Environment Control - Low Pin Count Input / Output
12  *	Data-sheets: Publicly available at the ITE website
91 static unsigned int timeout = DEFAULT_TIMEOUT;  variable
95 module_param(timeout, int, 0);
96 MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds, default="
113 		return -EBUSY;  in superio_enter()
198 	t -= t % 60;  in wdt_round_time()
206 	return wdt_update_timeout(wdd->timeout);  in wdt_start()
215  *	wdt_set_timeout - set a new timeout value with watchdog ioctl
216  *	@t: timeout value in seconds
231 	wdd->timeout = t;  in wdt_set_timeout()
304 		return -ENODEV;  in it87_wdt_init()
307 		return -ENODEV;  in it87_wdt_init()
311 		return -ENODEV;  in it87_wdt_init()
334 	if (timeout < 1 || timeout > max_units * 60) {  in it87_wdt_init()
335 		timeout = DEFAULT_TIMEOUT;  in it87_wdt_init()
336 		pr_warn("Timeout value out of range, use default %d sec\n",  in it87_wdt_init()
340 	if (timeout > max_units)  in it87_wdt_init()
341 		timeout = wdt_round_time(timeout);  in it87_wdt_init()
343 	wdt_dev.timeout = timeout;  in it87_wdt_init()
353 	pr_info("Chip IT%04x revision %d initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",  in it87_wdt_init()
354 		chip_type, chip_rev, timeout, nowayout, testmode);  in it87_wdt_init()
368 MODULE_DESCRIPTION("Hardware Watchdog Device Driver for IT87xx EC-LPC I/O");