11  * @brief USART driver for Atmel SAM MCU family.
26 	Usart *regs;
50 	Usart * const usart = config->regs;  in usart_sam_poll_in()  local
52 	if (!(usart->US_CSR & US_CSR_RXRDY)) {  in usart_sam_poll_in()
57 	*c = (unsigned char)usart->US_RHR;  in usart_sam_poll_in()
66 	Usart * const usart = config->regs;  in usart_sam_poll_out()  local
69 	while (!(usart->US_CSR & US_CSR_TXRDY)) {  in usart_sam_poll_out()
73 	usart->US_THR = (uint32_t)c;  in usart_sam_poll_out()
80 	volatile Usart * const usart = config->regs;  in usart_sam_err_check()  local
83 	if (usart->US_CSR & US_CSR_OVRE) {  in usart_sam_err_check()
87 	if (usart->US_CSR & US_CSR_PARE) {  in usart_sam_err_check()
91 	if (usart->US_CSR & US_CSR_FRAME) {  in usart_sam_err_check()
104 	volatile Usart * const usart = config->regs;  in usart_sam_baudrate_set()  local
119 	usart->US_BRGR = US_BRGR_CD(divisor);  in usart_sam_baudrate_set()
146 	volatile Usart * const usart = config->regs;  in usart_sam_get_parity()  local
148 	switch (usart->US_MR & US_MR_PAR_Msk) {  in usart_sam_get_parity()
180 	volatile Usart * const usart = config->regs;  in usart_sam_get_stop_bits()  local
182 	switch (usart->US_MR & US_MR_NBSTOP_Msk) {  in usart_sam_get_stop_bits()
212 	volatile Usart * const usart = config->regs;  in usart_sam_get_data_bits()  local
214 	switch (usart->US_MR & US_MR_CHRL_Msk) {  in usart_sam_get_data_bits()
242 	volatile Usart * const usart = config->regs;  in usart_sam_get_flow_ctrl()  local
244 	switch (usart->US_MR & US_MR_USART_MODE_Msk) {  in usart_sam_get_flow_ctrl()
260 	volatile Usart * const usart = config->regs;  in usart_sam_configure()  local
269 	/* Reset and disable USART */  in usart_sam_configure()
270 	usart->US_CR = US_CR_RSTRX | US_CR_RSTTX  in usart_sam_configure()
277 	usart->US_MR = US_MR_CHMODE_NORMAL  in usart_sam_configure()
291 	usart->US_CR = US_CR_RXEN | US_CR_TXEN;  in usart_sam_configure()
318 	volatile Usart * const usart = config->regs;  in usart_sam_fifo_fill()  local
321 	while ((usart->US_CSR & US_CSR_TXRDY) == 0) {  in usart_sam_fifo_fill()
324 	usart->US_THR = *tx_data;  in usart_sam_fifo_fill()
334 	volatile Usart * const usart = config->regs;  in usart_sam_fifo_read()  local
340 		if (usart->US_CSR & US_CSR_RXRDY) {  in usart_sam_fifo_read()
341 			rx_data[bytes_read] = usart->US_RHR;  in usart_sam_fifo_read()
355 	volatile Usart * const usart = config->regs;  in usart_sam_irq_tx_enable()  local
357 	usart->US_IER = US_IER_TXRDY;  in usart_sam_irq_tx_enable()
364 	volatile Usart * const usart = config->regs;  in usart_sam_irq_tx_disable()  local
366 	usart->US_IDR = US_IDR_TXRDY;  in usart_sam_irq_tx_disable()
373 	volatile Usart * const usart = config->regs;  in usart_sam_irq_tx_ready()  local
378 	return (usart->US_CSR & US_CSR_TXRDY &&  in usart_sam_irq_tx_ready()
379 		usart->US_IMR & US_IMR_TXRDY);  in usart_sam_irq_tx_ready()
386 	volatile Usart * const usart = config->regs;  in usart_sam_irq_rx_enable()  local
388 	usart->US_IER = US_IER_RXRDY;  in usart_sam_irq_rx_enable()
395 	volatile Usart * const usart = config->regs;  in usart_sam_irq_rx_disable()  local
397 	usart->US_IDR = US_IDR_RXRDY;  in usart_sam_irq_rx_disable()
404 	volatile Usart * const usart = config->regs;  in usart_sam_irq_tx_complete()  local
406 	return (usart->US_CSR & US_CSR_TXRDY &&  in usart_sam_irq_tx_complete()
407 		usart->US_CSR & US_CSR_TXEMPTY);  in usart_sam_irq_tx_complete()
414 	volatile Usart * const usart = config->regs;  in usart_sam_irq_rx_ready()  local
416 	return (usart->US_CSR & US_CSR_RXRDY);  in usart_sam_irq_rx_ready()
423 	volatile Usart * const usart = config->regs;  in usart_sam_irq_err_enable()  local
425 	usart->US_IER = US_IER_OVRE | US_IER_FRAME | US_IER_PARE;  in usart_sam_irq_err_enable()
432 	volatile Usart * const usart = config->regs;  in usart_sam_irq_err_disable()  local
434 	usart->US_IDR = US_IDR_OVRE | US_IDR_FRAME | US_IDR_PARE;  in usart_sam_irq_err_disable()
441 	volatile Usart * const usart = config->regs;  in usart_sam_irq_is_pending()  local
443 	return (usart->US_IMR & (US_IMR_TXRDY | US_IMR_RXRDY)) &  in usart_sam_irq_is_pending()
444 		(usart->US_CSR & (US_CSR_TXRDY | US_CSR_RXRDY));  in usart_sam_irq_is_pending()
483 	Usart * const usart = cfg->regs;  in usart_sam_init()  local
485 	/* Enable USART clock in PMC */  in usart_sam_init()
496 	usart->US_IDR = 0xFFFFFFFF;  in usart_sam_init()
542 	static const struct usart_sam_dev_cfg usart##n##_sam_config = {	\
543 		.regs = (Usart *)DT_INST_REG_ADDR(n),			\
554 	static void usart##n##_sam_irq_config_func(const struct device *port)	\
563 	.irq_config_func = usart##n##_sam_irq_config_func
575 	static struct usart_sam_dev_data usart##n##_sam_data = {	\
579 	static const struct usart_sam_dev_cfg usart##n##_sam_config;	\
583 			    &usart##n##_sam_data,			\
584 			    &usart##n##_sam_config, PRE_KERNEL_1,	\