Lines Matching +full:timer +full:- +full:1
1 // SPDX-License-Identifier: GPL-2.0
20 static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer);
21 static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer);
27 if (!rtc->offset_secs) in rtc_add_offset()
38 if ((rtc->start_secs > rtc->range_min && secs >= rtc->start_secs) || in rtc_add_offset()
39 (rtc->start_secs < rtc->range_min && in rtc_add_offset()
40 secs <= (rtc->start_secs + rtc->range_max - rtc->range_min))) in rtc_add_offset()
43 rtc_time64_to_tm(secs + rtc->offset_secs, tm); in rtc_add_offset()
50 if (!rtc->offset_secs) in rtc_subtract_offset()
61 if (secs >= rtc->range_min && secs <= rtc->range_max) in rtc_subtract_offset()
64 rtc_time64_to_tm(secs - rtc->offset_secs, tm); in rtc_subtract_offset()
69 if (rtc->range_min != rtc->range_max) { in rtc_valid_range()
71 time64_t range_min = rtc->set_start_time ? rtc->start_secs : in rtc_valid_range()
72 rtc->range_min; in rtc_valid_range()
73 timeu64_t range_max = rtc->set_start_time ? in rtc_valid_range()
74 (rtc->start_secs + rtc->range_max - rtc->range_min) : in rtc_valid_range()
75 rtc->range_max; in rtc_valid_range()
78 return -ERANGE; in rtc_valid_range()
88 if (!rtc->ops) { in __rtc_read_time()
89 err = -ENODEV; in __rtc_read_time()
90 } else if (!rtc->ops->read_time) { in __rtc_read_time()
91 err = -EINVAL; in __rtc_read_time()
94 err = rtc->ops->read_time(rtc->dev.parent, tm); in __rtc_read_time()
96 dev_dbg(&rtc->dev, "read_time: fail to read: %d\n", in __rtc_read_time()
105 dev_dbg(&rtc->dev, "read_time: rtc_time isn't valid\n"); in __rtc_read_time()
114 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_read_time()
119 mutex_unlock(&rtc->ops_lock); in rtc_read_time()
141 uie = rtc->uie_rtctimer.enabled || rtc->uie_irq_active; in rtc_set_time()
143 uie = rtc->uie_rtctimer.enabled; in rtc_set_time()
151 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_set_time()
155 if (!rtc->ops) in rtc_set_time()
156 err = -ENODEV; in rtc_set_time()
157 else if (rtc->ops->set_time) in rtc_set_time()
158 err = rtc->ops->set_time(rtc->dev.parent, tm); in rtc_set_time()
160 err = -EINVAL; in rtc_set_time()
162 pm_stay_awake(rtc->dev.parent); in rtc_set_time()
163 mutex_unlock(&rtc->ops_lock); in rtc_set_time()
164 /* A timer might have just expired */ in rtc_set_time()
165 schedule_work(&rtc->irqwork); in rtc_set_time()
168 err = rtc_update_irq_enable(rtc, 1); in rtc_set_time()
183 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_read_alarm_internal()
187 if (!rtc->ops) { in rtc_read_alarm_internal()
188 err = -ENODEV; in rtc_read_alarm_internal()
189 } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->read_alarm) { in rtc_read_alarm_internal()
190 err = -EINVAL; in rtc_read_alarm_internal()
192 alarm->enabled = 0; in rtc_read_alarm_internal()
193 alarm->pending = 0; in rtc_read_alarm_internal()
194 alarm->time.tm_sec = -1; in rtc_read_alarm_internal()
195 alarm->time.tm_min = -1; in rtc_read_alarm_internal()
196 alarm->time.tm_hour = -1; in rtc_read_alarm_internal()
197 alarm->time.tm_mday = -1; in rtc_read_alarm_internal()
198 alarm->time.tm_mon = -1; in rtc_read_alarm_internal()
199 alarm->time.tm_year = -1; in rtc_read_alarm_internal()
200 alarm->time.tm_wday = -1; in rtc_read_alarm_internal()
201 alarm->time.tm_yday = -1; in rtc_read_alarm_internal()
202 alarm->time.tm_isdst = -1; in rtc_read_alarm_internal()
203 err = rtc->ops->read_alarm(rtc->dev.parent, alarm); in rtc_read_alarm_internal()
206 mutex_unlock(&rtc->ops_lock); in rtc_read_alarm_internal()
208 trace_rtc_read_alarm(err?0:rtc_tm_to_time64(&alarm->time), err); in rtc_read_alarm_internal()
216 int first_time = 1; in __rtc_read_alarm()
221 /* The lower level RTC driver may return -1 in some fields, in __rtc_read_alarm()
222 * creating invalid alarm->time values, for reasons like: in __rtc_read_alarm()
224 * - The hardware may not be capable of filling them in; in __rtc_read_alarm()
225 * many alarms match only on time-of-day fields, not in __rtc_read_alarm()
228 * - Some hardware uses illegal values as "wildcard" match in __rtc_read_alarm()
229 * values, which non-Linux firmware (like a BIOS) may try in __rtc_read_alarm()
234 * a current RTC timestamp for any missing (-1) values. The in __rtc_read_alarm()
240 * of the -1 fields. in __rtc_read_alarm()
252 * the low-level rtc_read_alarm_internal() function. in __rtc_read_alarm()
276 /* full-function RTCs won't have such missing fields */ in __rtc_read_alarm()
277 err = rtc_valid_tm(&alarm->time); in __rtc_read_alarm()
293 * know there's at least one since alarm->time is invalid. in __rtc_read_alarm()
295 if (alarm->time.tm_sec == -1) in __rtc_read_alarm()
296 alarm->time.tm_sec = now.tm_sec; in __rtc_read_alarm()
297 if (alarm->time.tm_min == -1) in __rtc_read_alarm()
298 alarm->time.tm_min = now.tm_min; in __rtc_read_alarm()
299 if (alarm->time.tm_hour == -1) in __rtc_read_alarm()
300 alarm->time.tm_hour = now.tm_hour; in __rtc_read_alarm()
303 if (alarm->time.tm_mday < 1 || alarm->time.tm_mday > 31) { in __rtc_read_alarm()
304 alarm->time.tm_mday = now.tm_mday; in __rtc_read_alarm()
307 if ((unsigned int)alarm->time.tm_mon >= 12) { in __rtc_read_alarm()
308 alarm->time.tm_mon = now.tm_mon; in __rtc_read_alarm()
312 if (alarm->time.tm_year == -1) { in __rtc_read_alarm()
313 alarm->time.tm_year = now.tm_year; in __rtc_read_alarm()
321 err = rtc_valid_tm(&alarm->time); in __rtc_read_alarm()
327 t_alm = rtc_tm_to_time64(&alarm->time); in __rtc_read_alarm()
338 dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day"); in __rtc_read_alarm()
340 rtc_time64_to_tm(t_alm, &alarm->time); in __rtc_read_alarm()
349 dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month"); in __rtc_read_alarm()
351 if (alarm->time.tm_mon < 11) { in __rtc_read_alarm()
352 alarm->time.tm_mon++; in __rtc_read_alarm()
354 alarm->time.tm_mon = 0; in __rtc_read_alarm()
355 alarm->time.tm_year++; in __rtc_read_alarm()
357 days = rtc_month_days(alarm->time.tm_mon, in __rtc_read_alarm()
358 alarm->time.tm_year); in __rtc_read_alarm()
359 } while (days < alarm->time.tm_mday); in __rtc_read_alarm()
364 dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year"); in __rtc_read_alarm()
366 alarm->time.tm_year++; in __rtc_read_alarm()
367 } while (!is_leap_year(alarm->time.tm_year + 1900) && in __rtc_read_alarm()
368 rtc_valid_tm(&alarm->time) != 0); in __rtc_read_alarm()
372 dev_warn(&rtc->dev, "alarm rollover not handled\n"); in __rtc_read_alarm()
375 err = rtc_valid_tm(&alarm->time); in __rtc_read_alarm()
378 if (err && alarm->enabled) in __rtc_read_alarm()
379 dev_warn(&rtc->dev, "invalid alarm value: %ptR\n", in __rtc_read_alarm()
380 &alarm->time); in __rtc_read_alarm()
382 rtc_add_offset(rtc, &alarm->time); in __rtc_read_alarm()
388 * rtc_read_next_alarm - read the next expiring alarm
397 * Returns: 0 on success, -ENOENT if no alarm is pending, or other error.
405 return -EINVAL; in rtc_read_next_alarm()
407 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_read_next_alarm()
411 next = timerqueue_getnext(&rtc->timerqueue); in rtc_read_next_alarm()
413 err = -ENOENT; in rtc_read_next_alarm()
418 alarm->time = rtc_ktime_to_tm(next->expires); in rtc_read_next_alarm()
419 alarm->enabled = 1; in rtc_read_next_alarm()
422 mutex_unlock(&rtc->ops_lock); in rtc_read_next_alarm()
431 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_read_alarm()
434 if (!rtc->ops) { in rtc_read_alarm()
435 err = -ENODEV; in rtc_read_alarm()
436 } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) { in rtc_read_alarm()
437 err = -EINVAL; in rtc_read_alarm()
440 alarm->enabled = rtc->aie_timer.enabled; in rtc_read_alarm()
441 alarm->time = rtc_ktime_to_tm(rtc->aie_timer.node.expires); in rtc_read_alarm()
443 mutex_unlock(&rtc->ops_lock); in rtc_read_alarm()
445 trace_rtc_read_alarm(rtc_tm_to_time64(&alarm->time), err); in rtc_read_alarm()
456 err = rtc_valid_tm(&alarm->time); in __rtc_set_alarm()
460 scheduled = rtc_tm_to_time64(&alarm->time); in __rtc_set_alarm()
469 return -ETIME; in __rtc_set_alarm()
471 * XXX - We just checked to make sure the alarm time is not in __rtc_set_alarm()
477 rtc_subtract_offset(rtc, &alarm->time); in __rtc_set_alarm()
479 if (!rtc->ops) in __rtc_set_alarm()
480 err = -ENODEV; in __rtc_set_alarm()
481 else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) in __rtc_set_alarm()
482 err = -EINVAL; in __rtc_set_alarm()
484 err = rtc->ops->set_alarm(rtc->dev.parent, alarm); in __rtc_set_alarm()
490 * 1) It ticked after the alarm was set, and an alarm irq should be in __rtc_set_alarm()
497 * are in, we can return -ETIME to signal that the timer has already in __rtc_set_alarm()
500 if (!err && (scheduled - now) <= 1) { in __rtc_set_alarm()
506 return -ETIME; in __rtc_set_alarm()
509 trace_rtc_set_alarm(rtc_tm_to_time64(&alarm->time), err); in __rtc_set_alarm()
518 if (!rtc->ops) in rtc_set_alarm()
519 return -ENODEV; in rtc_set_alarm()
520 else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) in rtc_set_alarm()
521 return -EINVAL; in rtc_set_alarm()
523 err = rtc_valid_tm(&alarm->time); in rtc_set_alarm()
527 err = rtc_valid_range(rtc, &alarm->time); in rtc_set_alarm()
531 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_set_alarm()
534 if (rtc->aie_timer.enabled) in rtc_set_alarm()
535 rtc_timer_remove(rtc, &rtc->aie_timer); in rtc_set_alarm()
537 alarm_time = rtc_tm_to_ktime(alarm->time); in rtc_set_alarm()
542 if (test_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->features)) in rtc_set_alarm()
543 alarm_time = ktime_sub_ns(alarm_time, (u64)alarm->time.tm_sec * NSEC_PER_SEC); in rtc_set_alarm()
545 rtc->aie_timer.node.expires = alarm_time; in rtc_set_alarm()
546 rtc->aie_timer.period = 0; in rtc_set_alarm()
547 if (alarm->enabled) in rtc_set_alarm()
548 err = rtc_timer_enqueue(rtc, &rtc->aie_timer); in rtc_set_alarm()
550 mutex_unlock(&rtc->ops_lock); in rtc_set_alarm()
562 err = rtc_valid_tm(&alarm->time); in rtc_initialize_alarm()
570 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_initialize_alarm()
574 rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time); in rtc_initialize_alarm()
575 rtc->aie_timer.period = 0; in rtc_initialize_alarm()
578 if (alarm->enabled && (rtc_tm_to_ktime(now) < in rtc_initialize_alarm()
579 rtc->aie_timer.node.expires)) { in rtc_initialize_alarm()
580 rtc->aie_timer.enabled = 1; in rtc_initialize_alarm()
581 timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node); in rtc_initialize_alarm()
582 trace_rtc_timer_enqueue(&rtc->aie_timer); in rtc_initialize_alarm()
584 mutex_unlock(&rtc->ops_lock); in rtc_initialize_alarm()
593 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_alarm_irq_enable()
597 if (rtc->aie_timer.enabled != enabled) { in rtc_alarm_irq_enable()
599 err = rtc_timer_enqueue(rtc, &rtc->aie_timer); in rtc_alarm_irq_enable()
601 rtc_timer_remove(rtc, &rtc->aie_timer); in rtc_alarm_irq_enable()
606 else if (!rtc->ops) in rtc_alarm_irq_enable()
607 err = -ENODEV; in rtc_alarm_irq_enable()
608 else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->alarm_irq_enable) in rtc_alarm_irq_enable()
609 err = -EINVAL; in rtc_alarm_irq_enable()
611 err = rtc->ops->alarm_irq_enable(rtc->dev.parent, enabled); in rtc_alarm_irq_enable()
613 mutex_unlock(&rtc->ops_lock); in rtc_alarm_irq_enable()
624 err = mutex_lock_interruptible(&rtc->ops_lock); in rtc_update_irq_enable()
629 if (enabled == 0 && rtc->uie_irq_active) { in rtc_update_irq_enable()
630 mutex_unlock(&rtc->ops_lock); in rtc_update_irq_enable()
635 if (rtc->uie_rtctimer.enabled == enabled) in rtc_update_irq_enable()
638 if (!test_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features) || in rtc_update_irq_enable()
639 !test_bit(RTC_FEATURE_ALARM, rtc->features)) { in rtc_update_irq_enable()
640 mutex_unlock(&rtc->ops_lock); in rtc_update_irq_enable()
644 return -EINVAL; in rtc_update_irq_enable()
655 onesec = ktime_set(1, 0); in rtc_update_irq_enable()
657 rtc->uie_rtctimer.node.expires = ktime_add(now, onesec); in rtc_update_irq_enable()
658 rtc->uie_rtctimer.period = ktime_set(1, 0); in rtc_update_irq_enable()
659 err = rtc_timer_enqueue(rtc, &rtc->uie_rtctimer); in rtc_update_irq_enable()
660 if (!err && rtc->ops && rtc->ops->alarm_irq_enable) in rtc_update_irq_enable()
661 err = rtc->ops->alarm_irq_enable(rtc->dev.parent, 1); in rtc_update_irq_enable()
665 rtc_timer_remove(rtc, &rtc->uie_rtctimer); in rtc_update_irq_enable()
669 mutex_unlock(&rtc->ops_lock); in rtc_update_irq_enable()
676 * rtc_handle_legacy_irq - AIE, UIE and PIE event hook
690 spin_lock_irqsave(&rtc->irq_lock, flags); in rtc_handle_legacy_irq()
691 rtc->irq_data = (rtc->irq_data + (num << 8)) | (RTC_IRQF | mode); in rtc_handle_legacy_irq()
692 spin_unlock_irqrestore(&rtc->irq_lock, flags); in rtc_handle_legacy_irq()
694 wake_up_interruptible(&rtc->irq_queue); in rtc_handle_legacy_irq()
695 kill_fasync(&rtc->async_queue, SIGIO, POLL_IN); in rtc_handle_legacy_irq()
699 * rtc_aie_update_irq - AIE mode rtctimer hook
706 rtc_handle_legacy_irq(rtc, 1, RTC_AF); in rtc_aie_update_irq()
710 * rtc_uie_update_irq - UIE mode rtctimer hook
717 rtc_handle_legacy_irq(rtc, 1, RTC_UF); in rtc_uie_update_irq()
721 * rtc_pie_update_irq - PIE mode hrtimer hook
722 * @timer: pointer to the pie mode hrtimer
728 enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer) in rtc_pie_update_irq() argument
734 rtc = container_of(timer, struct rtc_device, pie_timer); in rtc_pie_update_irq()
736 period = NSEC_PER_SEC / rtc->irq_freq; in rtc_pie_update_irq()
737 count = hrtimer_forward_now(timer, period); in rtc_pie_update_irq()
745 * rtc_update_irq - Triggered when a RTC interrupt occurs.
757 pm_stay_awake(rtc->dev.parent); in rtc_update_irq()
758 schedule_work(&rtc->irqwork); in rtc_update_irq()
772 if (!try_module_get(rtc->owner)) { in rtc_class_open()
784 module_put(rtc->owner); in rtc_class_close()
785 put_device(&rtc->dev); in rtc_class_close()
792 * We always cancel the timer here first, because otherwise in rtc_update_hrtimer()
793 * we could run into BUG_ON(timer->state != HRTIMER_STATE_CALLBACK); in rtc_update_hrtimer()
794 * when we manage to start the timer before the callback in rtc_update_hrtimer()
798 * could be blocked on rtc->irq_task_lock and hrtimer_cancel() in rtc_update_hrtimer()
801 if (hrtimer_try_to_cancel(&rtc->pie_timer) < 0) in rtc_update_hrtimer()
802 return -1; in rtc_update_hrtimer()
805 ktime_t period = NSEC_PER_SEC / rtc->irq_freq; in rtc_update_hrtimer()
807 hrtimer_start(&rtc->pie_timer, period, HRTIMER_MODE_REL); in rtc_update_hrtimer()
813 * rtc_irq_set_state - enable/disable 2^N Hz periodic IRQs
828 rtc->pie_enabled = enabled; in rtc_irq_set_state()
835 * rtc_irq_set_freq - set 2^N Hz periodic IRQ frequency for IRQ
848 return -EINVAL; in rtc_irq_set_freq()
850 rtc->irq_freq = freq; in rtc_irq_set_freq()
851 while (rtc->pie_enabled && rtc_update_hrtimer(rtc, 1) < 0) in rtc_irq_set_freq()
859 * rtc_timer_enqueue - Adds a rtc_timer to the rtc_device timerqueue
861 * @timer: timer being added.
863 * Enqueues a timer onto the rtc devices timerqueue and sets
866 * Sets the enabled bit on the added timer.
870 static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) in rtc_timer_enqueue() argument
872 struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue); in rtc_timer_enqueue()
881 timer->enabled = 1; in rtc_timer_enqueue()
886 if (next->expires >= now) in rtc_timer_enqueue()
891 timerqueue_add(&rtc->timerqueue, &timer->node); in rtc_timer_enqueue()
892 trace_rtc_timer_enqueue(timer); in rtc_timer_enqueue()
893 if (!next || ktime_before(timer->node.expires, next->expires)) { in rtc_timer_enqueue()
896 alarm.time = rtc_ktime_to_tm(timer->node.expires); in rtc_timer_enqueue()
897 alarm.enabled = 1; in rtc_timer_enqueue()
899 if (err == -ETIME) { in rtc_timer_enqueue()
900 pm_stay_awake(rtc->dev.parent); in rtc_timer_enqueue()
901 schedule_work(&rtc->irqwork); in rtc_timer_enqueue()
903 timerqueue_del(&rtc->timerqueue, &timer->node); in rtc_timer_enqueue()
904 trace_rtc_timer_dequeue(timer); in rtc_timer_enqueue()
905 timer->enabled = 0; in rtc_timer_enqueue()
914 if (!rtc->ops || !test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->alarm_irq_enable) in rtc_alarm_disable()
917 rtc->ops->alarm_irq_enable(rtc->dev.parent, false); in rtc_alarm_disable()
922 * rtc_timer_remove - Removes a rtc_timer from the rtc_device timerqueue
924 * @timer: timer being removed.
926 * Removes a timer onto the rtc devices timerqueue and sets
929 * Clears the enabled bit on the removed timer.
933 static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer) in rtc_timer_remove() argument
935 struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue); in rtc_timer_remove()
937 timerqueue_del(&rtc->timerqueue, &timer->node); in rtc_timer_remove()
938 trace_rtc_timer_dequeue(timer); in rtc_timer_remove()
939 timer->enabled = 0; in rtc_timer_remove()
940 if (next == &timer->node) { in rtc_timer_remove()
944 next = timerqueue_getnext(&rtc->timerqueue); in rtc_timer_remove()
949 alarm.time = rtc_ktime_to_tm(next->expires); in rtc_timer_remove()
950 alarm.enabled = 1; in rtc_timer_remove()
952 if (err == -ETIME) { in rtc_timer_remove()
953 pm_stay_awake(rtc->dev.parent); in rtc_timer_remove()
954 schedule_work(&rtc->irqwork); in rtc_timer_remove()
960 * rtc_timer_do_work - Expires rtc timers
970 struct rtc_timer *timer; in rtc_timer_do_work() local
979 mutex_lock(&rtc->ops_lock); in rtc_timer_do_work()
983 mutex_unlock(&rtc->ops_lock); in rtc_timer_do_work()
987 while ((next = timerqueue_getnext(&rtc->timerqueue))) { in rtc_timer_do_work()
988 if (next->expires > now) in rtc_timer_do_work()
991 /* expire timer */ in rtc_timer_do_work()
992 timer = container_of(next, struct rtc_timer, node); in rtc_timer_do_work()
993 timerqueue_del(&rtc->timerqueue, &timer->node); in rtc_timer_do_work()
994 trace_rtc_timer_dequeue(timer); in rtc_timer_do_work()
995 timer->enabled = 0; in rtc_timer_do_work()
996 if (timer->func) in rtc_timer_do_work()
997 timer->func(timer->rtc); in rtc_timer_do_work()
999 trace_rtc_timer_fired(timer); in rtc_timer_do_work()
1000 /* Re-add/fwd periodic timers */ in rtc_timer_do_work()
1001 if (ktime_to_ns(timer->period)) { in rtc_timer_do_work()
1002 timer->node.expires = ktime_add(timer->node.expires, in rtc_timer_do_work()
1003 timer->period); in rtc_timer_do_work()
1004 timer->enabled = 1; in rtc_timer_do_work()
1005 timerqueue_add(&rtc->timerqueue, &timer->node); in rtc_timer_do_work()
1006 trace_rtc_timer_enqueue(timer); in rtc_timer_do_work()
1016 alarm.time = rtc_ktime_to_tm(next->expires); in rtc_timer_do_work()
1017 alarm.enabled = 1; in rtc_timer_do_work()
1020 if (err == -ETIME) { in rtc_timer_do_work()
1023 if (retry-- > 0) in rtc_timer_do_work()
1026 timer = container_of(next, struct rtc_timer, node); in rtc_timer_do_work()
1027 timerqueue_del(&rtc->timerqueue, &timer->node); in rtc_timer_do_work()
1028 trace_rtc_timer_dequeue(timer); in rtc_timer_do_work()
1029 timer->enabled = 0; in rtc_timer_do_work()
1030 dev_err(&rtc->dev, "__rtc_set_alarm: err=%d\n", err); in rtc_timer_do_work()
1037 pm_relax(rtc->dev.parent); in rtc_timer_do_work()
1038 mutex_unlock(&rtc->ops_lock); in rtc_timer_do_work()
1041 /* rtc_timer_init - Initializes an rtc_timer
1042 * @timer: timer to be intiialized
1043 * @f: function pointer to be called when timer fires
1048 void rtc_timer_init(struct rtc_timer *timer, void (*f)(struct rtc_device *r), in rtc_timer_init() argument
1051 timerqueue_init(&timer->node); in rtc_timer_init()
1052 timer->enabled = 0; in rtc_timer_init()
1053 timer->func = f; in rtc_timer_init()
1054 timer->rtc = rtc; in rtc_timer_init()
1057 /* rtc_timer_start - Sets an rtc_timer to fire in the future
1059 * @ timer: timer being set
1060 * @ expires: time at which to expire the timer
1061 * @ period: period that the timer will recur
1065 int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer *timer, in rtc_timer_start() argument
1070 mutex_lock(&rtc->ops_lock); in rtc_timer_start()
1071 if (timer->enabled) in rtc_timer_start()
1072 rtc_timer_remove(rtc, timer); in rtc_timer_start()
1074 timer->node.expires = expires; in rtc_timer_start()
1075 timer->period = period; in rtc_timer_start()
1077 ret = rtc_timer_enqueue(rtc, timer); in rtc_timer_start()
1079 mutex_unlock(&rtc->ops_lock); in rtc_timer_start()
1083 /* rtc_timer_cancel - Stops an rtc_timer
1085 * @ timer: timer being set
1089 void rtc_timer_cancel(struct rtc_device *rtc, struct rtc_timer *timer) in rtc_timer_cancel() argument
1091 mutex_lock(&rtc->ops_lock); in rtc_timer_cancel()
1092 if (timer->enabled) in rtc_timer_cancel()
1093 rtc_timer_remove(rtc, timer); in rtc_timer_cancel()
1094 mutex_unlock(&rtc->ops_lock); in rtc_timer_cancel()
1098 * rtc_read_offset - Read the amount of rtc offset in parts per billion
1106 * If read_offset() is not implemented for the rtc, return -EINVAL
1112 if (!rtc->ops) in rtc_read_offset()
1113 return -ENODEV; in rtc_read_offset()
1115 if (!rtc->ops->read_offset) in rtc_read_offset()
1116 return -EINVAL; in rtc_read_offset()
1118 mutex_lock(&rtc->ops_lock); in rtc_read_offset()
1119 ret = rtc->ops->read_offset(rtc->dev.parent, offset); in rtc_read_offset()
1120 mutex_unlock(&rtc->ops_lock); in rtc_read_offset()
1127 * rtc_set_offset - Adjusts the duration of the average second
1136 * t = t0 * (1 + offset * 1e-9)
1137 * where t0 is the measured length of 1 RTC second with offset = 0
1141 * If the rtc offset is not setable (or not implemented), return -EINVAL
1147 if (!rtc->ops) in rtc_set_offset()
1148 return -ENODEV; in rtc_set_offset()
1150 if (!rtc->ops->set_offset) in rtc_set_offset()
1151 return -EINVAL; in rtc_set_offset()
1153 mutex_lock(&rtc->ops_lock); in rtc_set_offset()
1154 ret = rtc->ops->set_offset(rtc->dev.parent, offset); in rtc_set_offset()
1155 mutex_unlock(&rtc->ops_lock); in rtc_set_offset()