drivers/watchdog/wdrtas.c

7  * RTAS watchdog driver
10  * device driver to exploit watchdog RTAS functions
37 #include <linux/watchdog.h>
47 MODULE_DESCRIPTION("RTAS watchdog driver");
72 /*** watchdog access functions */
75  * wdrtas_set_interval - sets the watchdog interval
80  * wdrtas_set_interval sets the watchdog keepalive interval by calling the
96 		printk(KERN_ERR "wdrtas: setting the watchdog to %i "  in wdrtas_set_interval()
107  * wdrtas_get_interval - returns the current watchdog interval
112  * wdrtas_get_interval returns the current watchdog keepalive interval
131 		printk(KERN_WARNING "wdrtas: could not get sp_spi watchdog "  in wdrtas_get_interval()
141  * wdrtas_timer_start - starts watchdog
143  * wdrtas_timer_start starts the watchdog by calling the RTAS function
152  * wdrtas_timer_stop - stops watchdog
154  * wdrtas_timer_stop stops the watchdog timer by calling the RTAS function
188  * wdrtas_timer_keepalive - resets watchdog timer to keep system alive
190  * wdrtas_timer_keepalive restarts the watchdog timer by calling the
236  * wdrtas_get_status - returns the status of the watchdog
239  * include/linux/watchdog.h
250  * include/linux/watchdog.h, indicating why the watchdog rebooted the system
257 /*** watchdog API and operations stuff */
259 /* wdrtas_write - called when watchdog device is written to
269  * character 'V'. This character allows the watchdog device to be closed
300  * wdrtas_ioctl - ioctl function for the watchdog device
307  * wdrtas_ioctl implements the watchdog API ioctls
384  * wdrtas_open - open function of watchdog device
391  * function called when watchdog device is opened
408  * wdrtas_close - close function of watchdog device
418 	/* only stop watchdog, if this was announced using 'V' before */  in wdrtas_close()
422 		printk(KERN_WARNING "wdrtas: got unexpected close. Watchdog "  in wdrtas_close()
496  * wdrtas_reboot stops the watchdog in case of a reboot
520 	.name =		"watchdog",
548  * this watchdog driver. It tolerates, if "get-sensor-state" and
571 		       "set-indicator. Terminating watchdog code.\n");  in wdrtas_get_tokens()
578 		       "Terminating watchdog code.\n");  in wdrtas_get_tokens()
588  * wdrtas_register_devs unregisters the watchdog and temperature watchdog
603  * wdrtas_register_devs registers the watchdog and temperature watchdog
612 		printk(KERN_ERR "wdrtas: couldn't register watchdog misc "  in wdrtas_register_devs()
613 		       "device. Terminating watchdog code.\n");  in wdrtas_register_devs()
621 			       "watchdog temperature misc device. Continuing "  in wdrtas_register_devs()
631  * wdrtas_init - init function of the watchdog driver
647 		       "Terminating watchdog code.\n");  in wdrtas_init()
661  * wdrtas_exit - exit function of the watchdog driver