96 static unsigned long uart_get_clock_freq(struct stm32_uart_handle_s *huart)  in uart_get_clock_freq()  argument
98 	return fdt_get_uart_clock_freq((uintptr_t)huart->base);  in uart_get_clock_freq()
106 static int uart_set_config(struct stm32_uart_handle_s *huart,  in uart_set_config()  argument
116 	clockfreq = uart_get_clock_freq(huart);  in uart_set_config()
137 	mmio_write_32(huart->base + USART_BRR, brrtemp);  in uart_set_config()
153 	mmio_clrsetbits_32(huart->base + USART_CR1, STM32_UART_CR1_FIELDS, tmpreg);  in uart_set_config()
160 	mmio_clrsetbits_32(huart->base + USART_CR2, STM32_UART_CR2_FIELDS,  in uart_set_config()
181 	mmio_clrsetbits_32(huart->base + USART_CR3, STM32_UART_CR3_FIELDS, tmpreg);  in uart_set_config()
189 	mmio_clrsetbits_32(huart->base + USART_PRESC, USART_PRESC_PRESCALER,  in uart_set_config()
201 static int stm32_uart_wait_flag(struct stm32_uart_handle_s *huart, uint32_t flag)  in stm32_uart_wait_flag()  argument
205 	while ((mmio_read_32(huart->base + USART_ISR) & flag) == 0U) {  in stm32_uart_wait_flag()
219 static int stm32_uart_check_idle(struct stm32_uart_handle_s *huart)  in stm32_uart_check_idle()  argument
224 	if ((mmio_read_32(huart->base + USART_CR1) & USART_CR1_TE) == USART_CR1_TE) {  in stm32_uart_check_idle()
225 		ret = stm32_uart_wait_flag(huart, USART_ISR_TEACK);  in stm32_uart_check_idle()
232 	if ((mmio_read_32(huart->base + USART_CR1) & USART_CR1_RE) == USART_CR1_RE) {  in stm32_uart_check_idle()
233 		ret = stm32_uart_wait_flag(huart, USART_ISR_REACK);  in stm32_uart_check_idle()
276 static bool stm32_uart_error_detected(struct stm32_uart_handle_s *huart)  in stm32_uart_error_detected()  argument
278 	return (mmio_read_32(huart->base + USART_ISR) & STM32_UART_ISR_ERRORS) != 0U;  in stm32_uart_error_detected()
284 static void stm32_uart_error_clear(struct stm32_uart_handle_s *huart)  in stm32_uart_error_clear()  argument
286 	mmio_write_32(huart->base + USART_ICR, STM32_UART_ISR_ERRORS);  in stm32_uart_error_clear()
305 int stm32_uart_init(struct stm32_uart_handle_s *huart,  in stm32_uart_init()  argument
314 	if (huart == NULL || init == NULL || base_addr == 0U) {  in stm32_uart_init()
318 	huart->base = base_addr;  in stm32_uart_init()
347 	stm32_uart_stop(huart->base);  in stm32_uart_init()
350 	huart->rdr_mask = stm32_uart_rdr_mask(init);  in stm32_uart_init()
353 	ret = uart_set_config(huart, init);  in stm32_uart_init()
359 	mmio_setbits_32(huart->base + USART_CR1, USART_CR1_UE);  in stm32_uart_init()
362 	return stm32_uart_check_idle(huart);  in stm32_uart_init()
371 int stm32_uart_putc(struct stm32_uart_handle_s *huart, int c)  in stm32_uart_putc()  argument
375 	if (huart == NULL) {  in stm32_uart_putc()
379 	ret = stm32_uart_wait_flag(huart, USART_ISR_TXE);  in stm32_uart_putc()
384 	mmio_write_32(huart->base + USART_TDR, c);  in stm32_uart_putc()
385 	if (stm32_uart_error_detected(huart)) {  in stm32_uart_putc()
386 		stm32_uart_error_clear(huart);  in stm32_uart_putc()
398 int stm32_uart_flush(struct stm32_uart_handle_s *huart)  in stm32_uart_flush()  argument
402 	if (huart == NULL) {  in stm32_uart_flush()
406 	ret = stm32_uart_wait_flag(huart, USART_ISR_TXE);  in stm32_uart_flush()
411 	return stm32_uart_wait_flag(huart, USART_ISR_TC);  in stm32_uart_flush()
418 int stm32_uart_getc(struct stm32_uart_handle_s *huart)  in stm32_uart_getc()  argument
422 	if (huart == NULL) {  in stm32_uart_getc()
427 	if ((mmio_read_32(huart->base + USART_ISR) & USART_ISR_RXNE) == 0U) {  in stm32_uart_getc()
431 	data = mmio_read_32(huart->base + USART_RDR) & huart->rdr_mask;  in stm32_uart_getc()
433 	if (stm32_uart_error_detected(huart)) {  in stm32_uart_getc()
434 		stm32_uart_error_clear(huart);  in stm32_uart_getc()