2  * Copyright (c) 2016-2021 Nordic Semiconductor ASA
5  * SPDX-License-Identifier: Apache-2.0
29 #define CHAN_COUNT_MAX (RTC1_CC_NUM - (RTC_PRETICK ? 1 : 0))
38 #define COUNTER_MAX (COUNTER_SPAN - 1U)
42 #define MAX_TICKS ((COUNTER_HALF_SPAN - CYC_PER_TICK) / CYC_PER_TICK)
70 	return (a - b) & COUNTER_MAX;  in counter_sub()
214 			-EINVAL : (curr_time + t.ticks);  in z_nrf_rtc_timer_get_ticks()
218 	result = abs_ticks - curr_tick;  in z_nrf_rtc_timer_get_ticks()
221 		return -EINVAL;  in z_nrf_rtc_timer_get_ticks()
242  *                  fail with -EINVAL result if @p req_cc is too close to the
246  * @retval -EINVAL The requested CC value could not be reliably set.
261 	 * occurs in the second half of the RTC clock cycle (such situation can  in set_alarm()
303 		    (COUNTER_HALF_SPAN - MIN_CYCLES_FROM_NOW)) {  in set_alarm()
319 						ret = -EINVAL;  in set_alarm()
326 				ret = -EINVAL;  in set_alarm()
349 		if (target_time - curr_time > COUNTER_HALF_SPAN) {  in compare_set_nolocks()
351 			return -EINVAL;  in compare_set_nolocks()
364 		ret = -EINVAL;  in compare_set_nolocks()
438 		 * of incorrect `anchor` value caused by non-atomic read of 64-bit `anchor`.  in z_nrf_rtc_timer_read()
463 		 * Write of 64-bit `anchor` is non atomic. However it happens  in anchor_update()
476 	uint32_t dticks = (uint32_t)(expire_time - last_count) / CYC_PER_TICK;  in sys_clock_timeout_handler()
584 		chan = alloc_mask ? 31 - __builtin_clz(alloc_mask) : -1;  in z_nrf_rtc_timer_chan_alloc()
586 			return -ENOMEM;  in z_nrf_rtc_timer_chan_alloc()
609 		return -ENOTSUP;  in z_nrf_rtc_timer_trigger_overflow()
614 		err = -EBUSY;  in z_nrf_rtc_timer_trigger_overflow()
618 	if (counter() >= (COUNTER_SPAN - 100)) {  in z_nrf_rtc_timer_trigger_overflow()
619 		err = -EAGAIN;  in z_nrf_rtc_timer_trigger_overflow()
658 	uint32_t unannounced = z_nrf_rtc_timer_read() - last_count;  in sys_clock_set_timeout()
660 	/* If we haven't announced for more than half the 24-bit wrap  in sys_clock_set_timeout()
695 	return (z_nrf_rtc_timer_read() - last_count) / CYC_PER_TICK;  in sys_clock_elapsed()