15 #include <zephyr/drivers/timer/system_timer.h>
22 /* Maximum time interval between timer interrupts (in hw_cycles) */
36 /* Global timer state */
42 	bool initialized;           /* Set to true when timer is initialized */
43 	sl_sleeptimer_timer_handle_t handle; /* Timer handle for system timer */
50 	struct sleeptimer_timer_data *timer = data;  in sleeptimer_cb()  local
53 	uint32_t prev = atomic_get(&timer->last_count);  in sleeptimer_cb()
57 	uint32_t unannounced = pending / timer->cyc_per_tick;  in sleeptimer_cb()
59 	atomic_set(&timer->last_count, prev + unannounced * timer->cyc_per_tick);  in sleeptimer_cb()
64 static void sleeptimer_clock_set_timeout(int32_t ticks, struct sleeptimer_timer_data *timer)  in sleeptimer_clock_set_timeout()  argument
70 	ticks = (ticks == K_TICKS_FOREVER) ? timer->max_timeout_ticks : ticks;  in sleeptimer_clock_set_timeout()
71 	ticks = CLAMP(ticks, 0, timer->max_timeout_ticks);  in sleeptimer_clock_set_timeout()
73 	k_spinlock_key_t key = k_spin_lock(&timer->lock);  in sleeptimer_clock_set_timeout()
76 	uint32_t prev = atomic_get(&timer->last_count);  in sleeptimer_clock_set_timeout()
78 	uint32_t next = ticks * timer->cyc_per_tick;  in sleeptimer_clock_set_timeout()
85 		next += timer->cyc_per_tick;  in sleeptimer_clock_set_timeout()
89 	sl_sleeptimer_restart_timer(&timer->handle, next, sleeptimer_cb, timer, 0, 0);  in sleeptimer_clock_set_timeout()
90 	k_spin_unlock(&timer->lock, key);  in sleeptimer_clock_set_timeout()
93 static uint32_t sleeptimer_clock_elapsed(struct sleeptimer_timer_data *timer)  in sleeptimer_clock_elapsed()  argument
95 	if (!IS_ENABLED(CONFIG_TICKLESS_KERNEL) || !timer->initialized) {  in sleeptimer_clock_elapsed()
99 		return (sl_sleeptimer_get_tick_count() - atomic_get(&timer->last_count)) /  in sleeptimer_clock_elapsed()
100 		       timer->cyc_per_tick;  in sleeptimer_clock_elapsed()
124 	struct sleeptimer_timer_data *timer = &g_sleeptimer_timer_data;  in sleeptimer_init()  local
137 	timer->cyc_per_tick = z_clock_hw_cycles_per_sec / CONFIG_SYS_CLOCK_TICKS_PER_SEC;  in sleeptimer_init()
139 	__ASSERT(timer->cyc_per_tick >= MIN_DELAY_CYC,  in sleeptimer_init()
142 		 "%d and timer frequency is %u",  in sleeptimer_init()
143 		 timer->cyc_per_tick, MIN_DELAY_CYC, CONFIG_SYS_CLOCK_TICKS_PER_SEC,  in sleeptimer_init()
146 	timer->max_timeout_ticks = MAX_TIMEOUT_CYC / timer->cyc_per_tick;  in sleeptimer_init()
147 	timer->initialized = true;  in sleeptimer_init()
149 	atomic_set(&timer->last_count, sl_sleeptimer_get_tick_count());  in sleeptimer_init()
151 	/* Start the timer and announce 1 kernel tick */  in sleeptimer_init()
153 		status = sl_sleeptimer_start_timer(&timer->handle, timer->cyc_per_tick,  in sleeptimer_init()
154 						   sleeptimer_cb, timer, 0, 0);  in sleeptimer_init()
156 		status = sl_sleeptimer_start_periodic_timer(&timer->handle, timer->cyc_per_tick,  in sleeptimer_init()
157 							    sleeptimer_cb, timer, 0, 0);  in sleeptimer_init()