2  * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
4  * SPDX-License-Identifier: Apache-2.0
18 #define CC_TO_ID(cc_num) (cc_num - 2)
50 	NRF_TIMER_Type *timer;  member
62 	const struct counter_nrfx_config *config = dev->config;  in start()
64 	nrf_timer_task_trigger(config->timer, NRF_TIMER_TASK_START);  in start()
71 	const struct counter_nrfx_config *config = dev->config;  in stop()
73 	nrf_timer_task_trigger(config->timer, NRF_TIMER_TASK_STOP);  in stop()
80 	const struct counter_nrfx_config *config = dev->config;  in get_top_value()
82 	return nrf_timer_cc_get(config->timer, TOP_CH);  in get_top_value()
87 	const struct counter_nrfx_config *config = dev->config;  in read()
88 	NRF_TIMER_Type *timer = config->timer;  in read()  local
90 	nrf_timer_task_trigger(timer,  in read()
94 	return nrf_timer_cc_get(timer, COUNTER_READ_CC);  in read()
111 	to_top = top - val1;  in ticks_add()
113 	return (val2 <= to_top) ? val1 + val2 : val2 - to_top;  in ticks_add()
119 		return (val - old) & top;  in ticks_sub()
122 	/* if top is not 2^n-1 */  in ticks_sub()
123 	return (val >= old) ? (val - old) : val + top + 1 - old;  in ticks_sub()
128 	const struct counter_nrfx_config *config = dev->config;  in set_cc_int_pending()
129 	struct counter_nrfx_data *data = dev->data;  in set_cc_int_pending()
131 	atomic_or(&data->cc_int_pending, BIT(chan));  in set_cc_int_pending()
132 	NRFX_IRQ_PENDING_SET(NRFX_IRQ_NUMBER_GET(config->timer));  in set_cc_int_pending()
138 	const struct counter_nrfx_config *config = dev->config;  in set_cc()
139 	struct counter_nrfx_data *data = dev->data;  in set_cc()
141 	__ASSERT_NO_MSG(data->guard_period < get_top_value(dev));  in set_cc()
144 	NRF_TIMER_Type  *reg = config->timer;  in set_cc()
169 		max_rel_val = top - data->guard_period;  in set_cc()
175 		 * setting is detected, interrupt shall be triggered for  in set_cc()
176 		 * immediate expiration of the timer. Detection is performed  in set_cc()
192 	diff = ticks_sub(val - 1, read(dev), top);  in set_cc()
195 			err = -ETIME;  in set_cc()
198 		/* Interrupt is triggered always for relative alarm and  in set_cc()
204 			config->ch_data[id].callback = NULL;  in set_cc()
216 	const struct counter_nrfx_config *nrfx_config = dev->config;  in set_alarm()
217 	struct counter_nrfx_ch_data *chdata = &nrfx_config->ch_data[chan];  in set_alarm()
219 	if (alarm_cfg->ticks >  get_top_value(dev)) {  in set_alarm()
220 		return -EINVAL;  in set_alarm()
223 	if (chdata->callback) {  in set_alarm()
224 		return -EBUSY;  in set_alarm()
227 	chdata->callback = alarm_cfg->callback;  in set_alarm()
228 	chdata->user_data = alarm_cfg->user_data;  in set_alarm()
230 	return set_cc(dev, chan, alarm_cfg->ticks, alarm_cfg->flags);  in set_alarm()
235 	const struct counter_nrfx_config *config = dev->config;  in cancel_alarm()
238 	nrf_timer_int_disable(config->timer, int_mask);  in cancel_alarm()
239 	config->ch_data[chan_id].callback = NULL;  in cancel_alarm()
247 	const struct counter_nrfx_config *nrfx_config = dev->config;  in set_top_value()
248 	NRF_TIMER_Type *timer = nrfx_config->timer;  in set_top_value()  local
249 	struct counter_nrfx_data *data = dev->data;  in set_top_value()
255 		if (nrfx_config->ch_data[i].callback) {  in set_top_value()
256 			return -EBUSY;  in set_top_value()
260 	nrf_timer_int_disable(timer, COUNTER_TOP_INT_MASK);  in set_top_value()
261 	nrf_timer_cc_set(timer, TOP_CH, cfg->ticks);  in set_top_value()
262 	nrf_timer_event_clear(timer, COUNTER_TOP_EVT);  in set_top_value()
263 	nrf_timer_shorts_enable(timer, COUNTER_OVERFLOW_SHORT);  in set_top_value()
265 	data->top_cb = cfg->callback;  in set_top_value()
266 	data->top_user_data = cfg->user_data;  in set_top_value()
268 	if (!(cfg->flags & COUNTER_TOP_CFG_DONT_RESET)) {  in set_top_value()
269 		nrf_timer_task_trigger(timer, NRF_TIMER_TASK_CLEAR);  in set_top_value()
270 	} else if (read(dev) >= cfg->ticks) {  in set_top_value()
271 		err = -ETIME;  in set_top_value()
272 		if (cfg->flags & COUNTER_TOP_CFG_RESET_WHEN_LATE) {  in set_top_value()
273 			nrf_timer_task_trigger(timer, NRF_TIMER_TASK_CLEAR);  in set_top_value()
277 	if (cfg->callback) {  in set_top_value()
278 		nrf_timer_int_enable(timer, COUNTER_TOP_INT_MASK);  in set_top_value()
293 			(MAYBE_CONST_CONFIG struct counter_nrfx_config *)dev->config;  in init_timer()
299 	nrfx_config->timer = nhw_convert_periph_base_addr(nrfx_config->timer);  in init_timer()
302 	NRF_TIMER_Type *reg = nrfx_config->timer;  in init_timer()
304 	nrf_timer_bit_width_set(reg, config->bit_width);  in init_timer()
305 	nrf_timer_mode_set(reg, config->mode);  in init_timer()
306 	nrf_timer_prescaler_set(reg, config->prescaler);  in init_timer()
317 	struct counter_nrfx_data *data = dev->data;  in get_guard_period()
319 	return data->guard_period;  in get_guard_period()
325 	struct counter_nrfx_data *data = dev->data;  in set_guard_period()
329 	data->guard_period = guard;  in set_guard_period()
335 	const struct counter_nrfx_config *config = dev->config;  in top_irq_handle()
336 	struct counter_nrfx_data *data = dev->data;  in top_irq_handle()
338 	NRF_TIMER_Type *reg = config->timer;  in top_irq_handle()
339 	counter_top_callback_t cb = data->top_cb;  in top_irq_handle()
344 		__ASSERT(cb != NULL, "top event enabled - expecting callback");  in top_irq_handle()
345 		cb(dev, data->top_user_data);  in top_irq_handle()
351 	const struct counter_nrfx_config *config = dev->config;  in alarm_irq_handle()
352 	struct counter_nrfx_data *data = dev->data;  in alarm_irq_handle()
355 	NRF_TIMER_Type *reg = config->timer;  in alarm_irq_handle()
360 	bool sw_irq_pending = data->cc_int_pending & BIT(cc);  in alarm_irq_handle()
367 		atomic_and(&data->cc_int_pending, ~BIT(cc));  in alarm_irq_handle()
370 		chdata = &config->ch_data[id];  in alarm_irq_handle()
371 		cb = chdata->callback;  in alarm_irq_handle()
372 		chdata->callback = NULL;  in alarm_irq_handle()
377 			cb(dev, id, cc_val, chdata->user_data);  in alarm_irq_handle()
433 		     "TIMER prescaler out of range");						\
465 		.timer = (NRF_TIMER_Type *)DT_INST_REG_ADDR(idx),				\