1 #ifndef _LINUX_ALARMTIMER_H 2 #define _LINUX_ALARMTIMER_H 3 4 #include <linux/time.h> 5 #include <linux/hrtimer.h> 6 #include <linux/timerqueue.h> 7 #include <linux/rtc.h> 8 9 enum alarmtimer_type { 10 ALARM_REALTIME, 11 ALARM_BOOTTIME, 12 13 ALARM_NUMTYPE, 14 }; 15 16 /** 17 * struct alarm - Alarm timer structure 18 * @node: timerqueue node for adding to the event list this value 19 * also includes the expiration time. 20 * @period: Period for recuring alarms 21 * @function: Function pointer to be executed when the timer fires. 22 * @type: Alarm type (BOOTTIME/REALTIME) 23 * @enabled: Flag that represents if the alarm is set to fire or not 24 * @data: Internal data value. 25 */ 26 struct alarm { 27 struct timerqueue_node node; 28 ktime_t period; 29 void (*function)(struct alarm *); 30 enum alarmtimer_type type; 31 bool enabled; 32 void *data; 33 }; 34 35 void alarm_init(struct alarm *alarm, enum alarmtimer_type type, 36 void (*function)(struct alarm *)); 37 void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period); 38 void alarm_cancel(struct alarm *alarm); 39 40 #endif 41