92 static void wait_synchronization(SercomUsart *const usart)  in wait_synchronization()  argument
96 	while ((usart->SYNCBUSY.reg & SERCOM_USART_SYNCBUSY_MASK) != 0) {  in wait_synchronization()
100 	while ((usart->STATUS.reg & SERCOM_USART_STATUS_SYNCBUSY) != 0) {  in wait_synchronization()
107 static int uart_sam0_set_baudrate(SercomUsart *const usart, uint32_t baudrate,  in uart_sam0_set_baudrate()  argument
122 	usart->BAUD.reg = baud;  in uart_sam0_set_baudrate()
123 	wait_synchronization(usart);  in uart_sam0_set_baudrate()
397 	SercomUsart * const usart = cfg->regs;  in uart_sam0_configure()  local
399 	wait_synchronization(usart);  in uart_sam0_configure()
401 	usart->CTRLA.bit.ENABLE = 0;  in uart_sam0_configure()
402 	wait_synchronization(usart);  in uart_sam0_configure()
413 	SERCOM_USART_CTRLA_Type CTRLA_temp = usart->CTRLA;  in uart_sam0_configure()
414 	SERCOM_USART_CTRLB_Type CTRLB_temp = usart->CTRLB;  in uart_sam0_configure()
473 	usart->CTRLA = CTRLA_temp;  in uart_sam0_configure()
474 	wait_synchronization(usart);  in uart_sam0_configure()
476 	usart->CTRLB = CTRLB_temp;  in uart_sam0_configure()
477 	wait_synchronization(usart);  in uart_sam0_configure()
479 	retval = uart_sam0_set_baudrate(usart, new_cfg->baudrate,  in uart_sam0_configure()
487 	usart->CTRLA.bit.ENABLE = 1;  in uart_sam0_configure()
488 	wait_synchronization(usart);  in uart_sam0_configure()
511 	SercomUsart * const usart = cfg->regs;  in uart_sam0_init()  local
529 	/* Disable all USART interrupts */  in uart_sam0_init()
530 	usart->INTENCLR.reg = SERCOM_USART_INTENCLR_MASK;  in uart_sam0_init()
531 	wait_synchronization(usart);  in uart_sam0_init()
534 	usart->CTRLA.reg =  in uart_sam0_init()
544 	wait_synchronization(usart);  in uart_sam0_init()
558 	usart->CTRLB.reg = SERCOM_USART_CTRLB_CHSIZE(0) |  in uart_sam0_init()
560 	wait_synchronization(usart);  in uart_sam0_init()
562 	retval = uart_sam0_set_baudrate(usart, cfg->baudrate,  in uart_sam0_init()
597 		dma_blk.dest_address = (uint32_t)(&(usart->DATA.reg));  in uart_sam0_init()
621 		dma_blk.source_address = (uint32_t)(&(usart->DATA.reg));  in uart_sam0_init()
633 	usart->CTRLA.bit.ENABLE = 1;  in uart_sam0_init()
634 	wait_synchronization(usart);  in uart_sam0_init()
643 	SercomUsart * const usart = config->regs;  in uart_sam0_poll_in()  local
645 	if (!usart->INTFLAG.bit.RXC) {  in uart_sam0_poll_in()
649 	*c = (unsigned char)usart->DATA.reg;  in uart_sam0_poll_in()
657 	SercomUsart * const usart = config->regs;  in uart_sam0_poll_out()  local
659 	while (!usart->INTFLAG.bit.DRE) {  in uart_sam0_poll_out()
663 	usart->DATA.reg = c;  in uart_sam0_poll_out()