/*
 * Copyright (c) 2018-2019 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#define EVENT_OVERHEAD_XTAL_US        1500
#define EVENT_OVERHEAD_PREEMPT_US     0    /* if <= min, then dynamic preempt */
#define EVENT_OVERHEAD_PREEMPT_MIN_US 0
#define EVENT_OVERHEAD_PREEMPT_MAX_US EVENT_OVERHEAD_XTAL_US
#define EVENT_OVERHEAD_START_US       300
/* Worst-case time margin needed after event end-time in the air
 * (done/preempt race margin + power-down/chain delay)
 */
#define EVENT_OVERHEAD_END_US         100
#define EVENT_JITTER_US               16
/* Inter-Event Space (IES) */
#define EVENT_TIES_US                 625
/* Ticker resolution margin
 * Needed due to the lack of fine timing resolution in ticker_start
 * and ticker_update. Set to 32 us, which is ~1 tick with 32768 Hz
 * clock.
 */
#define EVENT_TICKER_RES_MARGIN_US    32

#define EVENT_RX_JITTER_US(phy) 16    /* Radio Rx timing uncertainty */
#define EVENT_RX_TO_US(phy) ((((((phy)&0x03) + 4)<<3)/BIT((((phy)&0x3)>>1))) + \
				  EVENT_RX_JITTER_US(phy))

/* Turnaround time between RX and TX is based on CPU execution speed. It also
 * includes radio ramp up time. The value must meet hard deadline of `150 us`
 * imposed by BT Core spec for inter frame spacing (IFS). To include CPUs with
 * slow clock, the conservative approach was taken to use IFS value for all
 * cases.
 */
#define EVENT_RX_TX_TURNAROUND(phy)   150