include/linux/alarmtimer.h

   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