4  * SPDX-License-Identifier: Apache-2.0
20 /* DW APB timer register offsets */
30 /* DW APB timer control flags */
35 /* DW APB timer modes */
39 #define DEV_CFG(_dev) ((const struct counter_dw_timer_config *)(_dev)->config)
40 #define DEV_DATA(_dev) ((struct counter_dw_timer_drv_data *const)(_dev)->data)
48 	/* clock frequency of timer */
53 	/* identifier for timer to get clock freq from clk manager */
71 	/* clock frequency of timer */
90 	counter_alarm_callback_t alarm_cb = data->alarm_cb;  in counter_dw_timer_irq_handler()
97 	key = k_spin_lock(&data->lock);  in counter_dw_timer_irq_handler()
102 	if (data->alarm_cb) {  in counter_dw_timer_irq_handler()
105 		data->alarm_cb = NULL;  in counter_dw_timer_irq_handler()
106 		alarm_cb(timer_dev, 0, ticks, data->prv_data);  in counter_dw_timer_irq_handler()
108 	} else if (data->top_cb) {  in counter_dw_timer_irq_handler()
109 		data->top_cb(timer_dev, data->prv_data);  in counter_dw_timer_irq_handler()
112 	k_spin_unlock(&data->lock, key);  in counter_dw_timer_irq_handler()
119 	/* disable timer before starting in free-running mode */  in counter_dw_timer_start()
122 	/* starting timer in free running mode */  in counter_dw_timer_start()
127 	/* enable timer */  in counter_dw_timer_start()
136 	/* stop timer */  in counter_dw_timer_disable()
171 		return -EINVAL;  in counter_dw_timer_set_top_value()
175 	if (top_cfg->flags & COUNTER_TOP_CFG_DONT_RESET) {  in counter_dw_timer_set_top_value()
177 		return -ENOTSUP;  in counter_dw_timer_set_top_value()
180 	key = k_spin_lock(&data->lock);  in counter_dw_timer_set_top_value()
183 	if (data->alarm_cb) {  in counter_dw_timer_set_top_value()
184 		k_spin_unlock(&data->lock, key);  in counter_dw_timer_set_top_value()
186 		return -EBUSY;  in counter_dw_timer_set_top_value()
189 	if (!top_cfg->callback) {  in counter_dw_timer_set_top_value()
197 	data->top_cb = top_cfg->callback;  in counter_dw_timer_set_top_value()
198 	data->prv_data = top_cfg->user_data;  in counter_dw_timer_set_top_value()
200 	/* top value can be loaded only when timer is stopped and re-enabled */  in counter_dw_timer_set_top_value()
203 	/* configuring timer in user-defined mode */  in counter_dw_timer_set_top_value()
207 	sys_write32(top_cfg->ticks, reg_base + LOADCOUNT_OFST);  in counter_dw_timer_set_top_value()
210 	k_spin_unlock(&data->lock, key);  in counter_dw_timer_set_top_value()
225 		return -EINVAL;  in counter_dw_timer_set_alarm()
229 	if (!alarm_cfg->callback) {  in counter_dw_timer_set_alarm()
231 		return -EINVAL;  in counter_dw_timer_set_alarm()
234 	/* absolute alarm is not supported as interrupts are triggered  in counter_dw_timer_set_alarm()
237 	if (alarm_cfg->flags & COUNTER_ALARM_CFG_ABSOLUTE) {  in counter_dw_timer_set_alarm()
239 		return -ENOTSUP;  in counter_dw_timer_set_alarm()
242 	key = k_spin_lock(&data->lock);  in counter_dw_timer_set_alarm()
245 	if (data->alarm_cb != NULL) {  in counter_dw_timer_set_alarm()
247 		k_spin_unlock(&data->lock, key);  in counter_dw_timer_set_alarm()
248 		return -EBUSY;  in counter_dw_timer_set_alarm()
251 	data->alarm_cb = alarm_cfg->callback;  in counter_dw_timer_set_alarm()
252 	data->prv_data = alarm_cfg->user_data;  in counter_dw_timer_set_alarm()
256 	/* start timer in user-defined mode */  in counter_dw_timer_set_alarm()
260 	sys_write32(alarm_cfg->ticks, reg_base + LOADCOUNT_OFST);  in counter_dw_timer_set_alarm()
263 	k_spin_unlock(&data->lock, key);  in counter_dw_timer_set_alarm()
275 	key = k_spin_lock(&data->lock);  in counter_dw_timer_cancel_alarm()
279 	data->alarm_cb = NULL;  in counter_dw_timer_cancel_alarm()
280 	data->prv_data = NULL;  in counter_dw_timer_cancel_alarm()
282 	k_spin_unlock(&data->lock, key);  in counter_dw_timer_cancel_alarm()
292 	return data->freq;  in counter_dw_timer_get_freq()
296 	return config->freq;  in counter_dw_timer_get_freq()
326 	if (!device_is_ready(timer_config->clk_dev)) {  in counter_dw_timer_init()
328 		return -ENODEV;  in counter_dw_timer_init()
330 	ret = clock_control_get_rate(timer_config->clk_dev,  in counter_dw_timer_init()
331 					timer_config->clkid, &data->freq);  in counter_dw_timer_init()
338 	/* Reset timer only if reset controller driver is supported */  in counter_dw_timer_init()
340 	if (timer_config->reset.dev != NULL) {  in counter_dw_timer_init()
341 		if (!device_is_ready(timer_config->reset.dev)) {  in counter_dw_timer_init()
343 			return -ENODEV;  in counter_dw_timer_init()
346 		ret = reset_line_toggle(timer_config->reset.dev, timer_config->reset.id);  in counter_dw_timer_init()
348 			LOG_ERR("Timer reset failed");  in counter_dw_timer_init()
354 	timer_config->irq_config();  in counter_dw_timer_init()