15 #include <zephyr/drivers/timer/system_timer.h>
22 /* Maximum time interval between timer interrupts (in hw_cycles) */
35 /* Global timer state */
41 	bool initialized;           /* Set to true when timer is initialized */
42 	sl_sleeptimer_timer_handle_t handle; /* Timer handle for system timer */
49 	struct sleeptimer_timer_data *timer = data;  in sleeptimer_cb()  local
52 	uint32_t prev = atomic_get(&timer->last_count);  in sleeptimer_cb()
56 	uint32_t unannounced = pending / timer->cyc_per_tick;  in sleeptimer_cb()
58 	atomic_set(&timer->last_count, prev + unannounced * timer->cyc_per_tick);  in sleeptimer_cb()
63 static void sleeptimer_clock_set_timeout(int32_t ticks, struct sleeptimer_timer_data *timer)  in sleeptimer_clock_set_timeout()  argument
69 	ticks = (ticks == K_TICKS_FOREVER) ? timer->max_timeout_ticks : ticks;  in sleeptimer_clock_set_timeout()
70 	ticks = CLAMP(ticks, 0, timer->max_timeout_ticks);  in sleeptimer_clock_set_timeout()
72 	k_spinlock_key_t key = k_spin_lock(&timer->lock);  in sleeptimer_clock_set_timeout()
75 	uint32_t pending = curr % timer->cyc_per_tick;  in sleeptimer_clock_set_timeout()
76 	uint32_t next = ticks * timer->cyc_per_tick;  in sleeptimer_clock_set_timeout()
83 		next = timer->cyc_per_tick;  in sleeptimer_clock_set_timeout()
87 	sl_sleeptimer_restart_timer(&timer->handle, next, sleeptimer_cb, timer, 0, 0);  in sleeptimer_clock_set_timeout()
88 	k_spin_unlock(&timer->lock, key);  in sleeptimer_clock_set_timeout()
91 static uint32_t sleeptimer_clock_elapsed(struct sleeptimer_timer_data *timer)  in sleeptimer_clock_elapsed()  argument
93 	if (!IS_ENABLED(CONFIG_TICKLESS_KERNEL) || !timer->initialized) {  in sleeptimer_clock_elapsed()
97 		return (sl_sleeptimer_get_tick_count() - atomic_get(&timer->last_count)) /  in sleeptimer_clock_elapsed()
98 		       timer->cyc_per_tick;  in sleeptimer_clock_elapsed()
122 	struct sleeptimer_timer_data *timer = &g_sleeptimer_timer_data;  in sleeptimer_init()  local
135 	timer->cyc_per_tick = z_clock_hw_cycles_per_sec / CONFIG_SYS_CLOCK_TICKS_PER_SEC;  in sleeptimer_init()
137 	timer->max_timeout_ticks = MAX_TIMEOUT_CYC / timer->cyc_per_tick;  in sleeptimer_init()
138 	timer->initialized = true;  in sleeptimer_init()
140 	atomic_set(&timer->last_count,  in sleeptimer_init()
141 		   ROUND_DOWN(sl_sleeptimer_get_tick_count(), timer->cyc_per_tick));  in sleeptimer_init()
143 	/* Start the timer and announce 1 kernel tick */  in sleeptimer_init()
145 		status = sl_sleeptimer_start_timer(&timer->handle, timer->cyc_per_tick,  in sleeptimer_init()
146 						   sleeptimer_cb, timer, 0, 0);  in sleeptimer_init()
148 		status = sl_sleeptimer_start_periodic_timer(&timer->handle, timer->cyc_per_tick,  in sleeptimer_init()
149 							    sleeptimer_cb, timer, 0, 0);  in sleeptimer_init()