53 static int32_t sy1xx_uart_read(const struct device *dev, sy1xx_uartTransfer_t *request);
54 static int32_t sy1xx_uart_write(const struct device *dev, sy1xx_uartTransfer_t *request);
108 int32_t sy1xx_uart_read(const struct device *dev, sy1xx_uartTransfer_t *request)  in sy1xx_uart_read()  argument
113 	if (request == 0) {  in sy1xx_uart_read()
117 	uint32_t max_read_size = request->data_len;  in sy1xx_uart_read()
119 	request->data_len = 0;  in sy1xx_uart_read()
136 			request->data[i] = data->read[i];  in sy1xx_uart_read()
140 		request->data_len = bytes_transferred;  in sy1xx_uart_read()
165 int32_t sy1xx_uart_write(const struct device *dev, sy1xx_uartTransfer_t *request)  in sy1xx_uart_write()  argument
170 	if (request == 0) {  in sy1xx_uart_write()
174 	if (request->data_len == 0) {  in sy1xx_uart_write()
178 	if (request->data_len > DEVICE_MAX_BUFFER_SIZE) {  in sy1xx_uart_write()
196 	for (uint32_t i = 0; i < request->data_len; i++) {  in sy1xx_uart_write()
197 		data->write[i] = request->data[i];  in sy1xx_uart_write()
201 	SY1XX_UDMA_START_TX(config->base, (uint32_t)data->write, request->data_len, 0);  in sy1xx_uart_write()
212 	sy1xx_uartTransfer_t request = {  in sy1xx_uart_poll_in()  local
217 	if (0 == sy1xx_uart_read(dev, &request)) {  in sy1xx_uart_poll_in()
229 	sy1xx_uartTransfer_t request = {  in sy1xx_uart_poll_out()  local
235 		if (0 == sy1xx_uart_write(dev, &request)) {  in sy1xx_uart_poll_out()