11  * @brief Microchip XEC Counter driver
17  * - Interrupts are triggered (if enabled) when the counter
21  *   the counter values are changed so that interrupts are triggered
29 #include <zephyr/drivers/counter.h>
63 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_start()  local
65 	if (counter->CTRL & MCHP_BTMR_CTRL_ENABLE) {  in counter_xec_start()
69 	counter->CTRL |= (MCHP_BTMR_CTRL_ENABLE | MCHP_BTMR_CTRL_START);  in counter_xec_start()
71 	LOG_DBG("%p Counter started", dev);  in counter_xec_start()
78 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_stop()  local
81 	if (!(counter->CTRL & MCHP_BTMR_CTRL_ENABLE)) {  in counter_xec_stop()
86 	reg = counter->CTRL;  in counter_xec_stop()
92 	counter->CTRL = reg;  in counter_xec_stop()
94 	counter->IEN = MCHP_BTMR_INTDIS;  in counter_xec_stop()
95 	counter->CNT = counter->PRLD;  in counter_xec_stop()
97 	LOG_DBG("%p Counter stopped", dev);  in counter_xec_stop()
104 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_get_value()  local
106 	*ticks = counter->CNT;  in counter_xec_get_value()
113 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_set_alarm()  local
121 	/* Interrupts are only triggered when the counter reaches 0.  in counter_xec_set_alarm()
136 	if (alarm_cfg->ticks > counter->PRLD) {  in counter_xec_set_alarm()
140 	counter->CNT = alarm_cfg->ticks;  in counter_xec_set_alarm()
145 	counter->IEN = MCHP_BTMR_INTEN;  in counter_xec_set_alarm()
147 	LOG_DBG("%p Counter alarm set to %u ticks", dev, alarm_cfg->ticks);  in counter_xec_set_alarm()
149 	counter->CTRL |= MCHP_BTMR_CTRL_START;  in counter_xec_set_alarm()
157 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_cancel_alarm()  local
165 	counter->CTRL &= ~MCHP_BTMR_CTRL_START;  in counter_xec_cancel_alarm()
166 	counter->IEN = MCHP_BTMR_INTDIS;  in counter_xec_cancel_alarm()
171 	LOG_DBG("%p Counter alarm canceled", dev);  in counter_xec_cancel_alarm()
178 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_get_pending_int()  local
180 	return counter->STS;  in counter_xec_get_pending_int()
185 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_get_top_value()  local
187 	return counter->PRLD;  in counter_xec_get_top_value()
193 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_set_top_value()  local
207 	restart = ((counter->CTRL & MCHP_BTMR_CTRL_START) != 0U);  in counter_xec_set_top_value()
209 	counter->CTRL &= ~MCHP_BTMR_CTRL_START;  in counter_xec_set_top_value()
212 		if (counter->CNT > cfg->ticks) {  in counter_xec_set_top_value()
216 				counter->CNT = cfg->ticks;  in counter_xec_set_top_value()
220 		counter->CNT = cfg->ticks;  in counter_xec_set_top_value()
223 	counter->PRLD = cfg->ticks;  in counter_xec_set_top_value()
229 		counter->IEN = MCHP_BTMR_INTEN;  in counter_xec_set_top_value()
230 		counter->CTRL |= MCHP_BTMR_CTRL_AUTO_RESTART;  in counter_xec_set_top_value()
232 		counter->IEN = MCHP_BTMR_INTDIS;  in counter_xec_set_top_value()
233 		counter->CTRL &= ~MCHP_BTMR_CTRL_AUTO_RESTART;  in counter_xec_set_top_value()
236 	LOG_DBG("%p Counter top value was set to %u", dev, cfg->ticks);  in counter_xec_set_top_value()
239 		counter->CTRL |= MCHP_BTMR_CTRL_START;  in counter_xec_set_top_value()
247 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_isr()  local
253 	counter->STS = MCHP_BTMR_STS_ACTIVE;  in counter_xec_isr()
261 	LOG_DBG("%p Counter ISR", dev);  in counter_xec_isr()
265 		counter->IEN = MCHP_BTMR_INTDIS;  in counter_xec_isr()
271 		alarm_cb(dev, 0, counter->CNT, user_data);  in counter_xec_isr()
290 	struct btmr_regs *counter = COUNTER_XEC_REG_BASE(dev);  in counter_xec_init()  local
295 	counter->CTRL &= ~MCHP_BTMR_CTRL_COUNT_UP;  in counter_xec_init()
296 	counter->CTRL |= (counter_cfg->prescaler << MCHP_BTMR_CTRL_PRESCALE_POS) &  in counter_xec_init()
299 	/* Set preload and actually pre-load the counter */  in counter_xec_init()
300 	counter->PRLD = counter_cfg->info.max_top_value;  in counter_xec_init()
301 	counter->CNT = counter_cfg->info.max_top_value;  in counter_xec_init()