187 static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in rtc_read_alarm_internal()  argument
200 		alarm->enabled = 0;  in rtc_read_alarm_internal()
201 		alarm->pending = 0;  in rtc_read_alarm_internal()
202 		alarm->time.tm_sec = -1;  in rtc_read_alarm_internal()
203 		alarm->time.tm_min = -1;  in rtc_read_alarm_internal()
204 		alarm->time.tm_hour = -1;  in rtc_read_alarm_internal()
205 		alarm->time.tm_mday = -1;  in rtc_read_alarm_internal()
206 		alarm->time.tm_mon = -1;  in rtc_read_alarm_internal()
207 		alarm->time.tm_year = -1;  in rtc_read_alarm_internal()
208 		alarm->time.tm_wday = -1;  in rtc_read_alarm_internal()
209 		alarm->time.tm_yday = -1;  in rtc_read_alarm_internal()
210 		alarm->time.tm_isdst = -1;  in rtc_read_alarm_internal()
211 		err = rtc->ops->read_alarm(rtc->dev.parent, alarm);  in rtc_read_alarm_internal()
216 	trace_rtc_read_alarm(rtc_tm_to_time64(&alarm->time), err);  in rtc_read_alarm_internal()
220 int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in __rtc_read_alarm()  argument
230 	 * creating invalid alarm->time values, for reasons like:  in __rtc_read_alarm()
238 	 *     to set up as e.g. "alarm 15 minutes after each hour".  in __rtc_read_alarm()
243 	 * RTC driver prevents "periodic alarm" modes.  in __rtc_read_alarm()
246 	 * may have wrapped in the interval since we read the RTC alarm,  in __rtc_read_alarm()
250 	 * Reading the alarm and timestamp in the reverse sequence  in __rtc_read_alarm()
254 	 * then read the RTC alarm value,  in __rtc_read_alarm()
279 		/* get the RTC alarm values, which may be incomplete */  in __rtc_read_alarm()
280 		err = rtc_read_alarm_internal(rtc, alarm);  in __rtc_read_alarm()
285 		if (rtc_valid_tm(&alarm->time) == 0) {  in __rtc_read_alarm()
286 			rtc_add_offset(rtc, &alarm->time);  in __rtc_read_alarm()
301 	/* Fill in the missing alarm fields using the timestamp; we  in __rtc_read_alarm()
302 	 * know there's at least one since alarm->time is invalid.  in __rtc_read_alarm()
304 	if (alarm->time.tm_sec == -1)  in __rtc_read_alarm()
305 		alarm->time.tm_sec = now.tm_sec;  in __rtc_read_alarm()
306 	if (alarm->time.tm_min == -1)  in __rtc_read_alarm()
307 		alarm->time.tm_min = now.tm_min;  in __rtc_read_alarm()
308 	if (alarm->time.tm_hour == -1)  in __rtc_read_alarm()
309 		alarm->time.tm_hour = now.tm_hour;  in __rtc_read_alarm()
312 	if (alarm->time.tm_mday < 1 || alarm->time.tm_mday > 31) {  in __rtc_read_alarm()
313 		alarm->time.tm_mday = now.tm_mday;  in __rtc_read_alarm()
316 	if ((unsigned)alarm->time.tm_mon >= 12) {  in __rtc_read_alarm()
317 		alarm->time.tm_mon = now.tm_mon;  in __rtc_read_alarm()
321 	if (alarm->time.tm_year == -1) {  in __rtc_read_alarm()
322 		alarm->time.tm_year = now.tm_year;  in __rtc_read_alarm()
327 	/* Can't proceed if alarm is still invalid after replacing  in __rtc_read_alarm()
330 	err = rtc_valid_tm(&alarm->time);  in __rtc_read_alarm()
336 	t_alm = rtc_tm_to_time64(&alarm->time);  in __rtc_read_alarm()
342 	/* 24 hour rollover ... if it's now 10am Monday, an alarm that  in __rtc_read_alarm()
348 		dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day");  in __rtc_read_alarm()
350 		rtc_time64_to_tm(t_alm, &alarm->time);  in __rtc_read_alarm()
353 	/* Month rollover ... if it's the 31th, an alarm on the 3rd will  in __rtc_read_alarm()
354 	 * be next month.  An alarm matching on the 30th, 29th, or 28th  in __rtc_read_alarm()
356 	 * this type of alarm.  in __rtc_read_alarm()
359 		dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month");  in __rtc_read_alarm()
361 			if (alarm->time.tm_mon < 11)  in __rtc_read_alarm()
362 				alarm->time.tm_mon++;  in __rtc_read_alarm()
364 				alarm->time.tm_mon = 0;  in __rtc_read_alarm()
365 				alarm->time.tm_year++;  in __rtc_read_alarm()
367 			days = rtc_month_days(alarm->time.tm_mon,  in __rtc_read_alarm()
368 					alarm->time.tm_year);  in __rtc_read_alarm()
369 		} while (days < alarm->time.tm_mday);  in __rtc_read_alarm()
374 		dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year");  in __rtc_read_alarm()
376 			alarm->time.tm_year++;  in __rtc_read_alarm()
377 		} while (!is_leap_year(alarm->time.tm_year + 1900)  in __rtc_read_alarm()
378 			&& rtc_valid_tm(&alarm->time) != 0);  in __rtc_read_alarm()
382 		dev_warn(&rtc->dev, "alarm rollover not handled\n");  in __rtc_read_alarm()
385 	err = rtc_valid_tm(&alarm->time);  in __rtc_read_alarm()
389 		dev_warn(&rtc->dev, "invalid alarm value: %d-%d-%d %d:%d:%d\n",  in __rtc_read_alarm()
390 			alarm->time.tm_year + 1900, alarm->time.tm_mon + 1,  in __rtc_read_alarm()
391 			alarm->time.tm_mday, alarm->time.tm_hour, alarm->time.tm_min,  in __rtc_read_alarm()
392 			alarm->time.tm_sec);  in __rtc_read_alarm()
398 int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in rtc_read_alarm()  argument
410 		memset(alarm, 0, sizeof(struct rtc_wkalrm));  in rtc_read_alarm()
411 		alarm->enabled = rtc->aie_timer.enabled;  in rtc_read_alarm()
412 		alarm->time = rtc_ktime_to_tm(rtc->aie_timer.node.expires);  in rtc_read_alarm()
416 	trace_rtc_read_alarm(rtc_tm_to_time64(&alarm->time), err);  in rtc_read_alarm()
421 static int __rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in __rtc_set_alarm()  argument
427 	err = rtc_valid_tm(&alarm->time);  in __rtc_set_alarm()
431 	scheduled = rtc_tm_to_time64(&alarm->time);  in __rtc_set_alarm()
441 	 * XXX - We just checked to make sure the alarm time is not  in __rtc_set_alarm()
443 	 * the is alarm set for the next second and the second ticks  in __rtc_set_alarm()
444 	 * over right here, before we set the alarm.  in __rtc_set_alarm()
447 	rtc_subtract_offset(rtc, &alarm->time);  in __rtc_set_alarm()
454 		err = rtc->ops->set_alarm(rtc->dev.parent, alarm);  in __rtc_set_alarm()
456 	trace_rtc_set_alarm(rtc_tm_to_time64(&alarm->time), err);  in __rtc_set_alarm()
460 int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in rtc_set_alarm()  argument
469 	err = rtc_valid_tm(&alarm->time);  in rtc_set_alarm()
473 	err = rtc_valid_range(rtc, &alarm->time);  in rtc_set_alarm()
483 	rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time);  in rtc_set_alarm()
485 	if (alarm->enabled)  in rtc_set_alarm()
495 int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)  in rtc_initialize_alarm()  argument
500 	err = rtc_valid_tm(&alarm->time);  in rtc_initialize_alarm()
512 	rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time);  in rtc_initialize_alarm()
515 	/* Alarm has to be enabled & in the future for us to enqueue it */  in rtc_initialize_alarm()
516 	if (alarm->enabled && (rtc_tm_to_ktime(now) <  in rtc_initialize_alarm()
812  * the next alarm event appropriately.
838 		struct rtc_wkalrm alarm;  in rtc_timer_enqueue()  local
840 		alarm.time = rtc_ktime_to_tm(timer->node.expires);  in rtc_timer_enqueue()
841 		alarm.enabled = 1;  in rtc_timer_enqueue()
842 		err = __rtc_set_alarm(rtc, &alarm);  in rtc_timer_enqueue()
871  * the next alarm event appropriately.
884 		struct rtc_wkalrm alarm;  in rtc_timer_remove()  local
891 		alarm.time = rtc_ktime_to_tm(next->expires);  in rtc_timer_remove()
892 		alarm.enabled = 1;  in rtc_timer_remove()
893 		err = __rtc_set_alarm(rtc, &alarm);  in rtc_timer_remove()
906  * Expires rtc timers. Reprograms next alarm event if needed.
948 	/* Set next alarm */  in rtc_timer_do_work()
950 		struct rtc_wkalrm alarm;  in rtc_timer_do_work()  local
954 		alarm.time = rtc_ktime_to_tm(next->expires);  in rtc_timer_do_work()
955 		alarm.enabled = 1;  in rtc_timer_do_work()
957 		err = __rtc_set_alarm(rtc, &alarm);  in rtc_timer_do_work()