drivers/serial/uart_mcux.c - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright (c) 2017, NXP
  * Copyright (c) 2020 PHYTEC Messtechnik GmbH
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 #define DT_DRV_COMPAT nxp_kinetis_uart

 #include <errno.h>
 #include <device.h>
 #include <drivers/uart.h>
 #include <drivers/clock_control.h>
 #include <fsl_uart.h>
 #include <soc.h>

 struct uart_mcux_config {
 	UART_Type *base;
 	const struct device *clock_dev;
 	clock_control_subsys_t clock_subsys;
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	void (*irq_config_func)(const struct device *dev);
 #endif
 };

 struct uart_mcux_data {
 	struct uart_config uart_cfg;
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	uart_irq_callback_user_data_t callback;
 	void *cb_data;
 #endif
 };

 static int uart_mcux_configure(const struct device *dev,
 			       const struct uart_config *cfg)
 {
 	const struct uart_mcux_config *config = dev->config;
 	struct uart_mcux_data *data = dev->data;
 	uart_config_t uart_config;
 	uint32_t clock_freq;
 	status_t retval;

 	if (clock_control_get_rate(config->clock_dev, config->clock_subsys,
 				   &clock_freq)) {
 		return -EINVAL;
 	}

 	UART_GetDefaultConfig(&uart_config);

 	uart_config.enableTx = true;
 	uart_config.enableRx = true;
 	uart_config.baudRate_Bps = cfg->baudrate;

 	switch (cfg->stop_bits) {
 	case UART_CFG_STOP_BITS_1:
 #if defined(FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT) && \
 FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
 		uart_config.stopBitCount = kUART_OneStopBit;
 		break;
 	case UART_CFG_STOP_BITS_2:
 		uart_config.stopBitCount = kUART_TwoStopBit;
 #endif
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	switch (cfg->flow_ctrl) {
 	case UART_CFG_FLOW_CTRL_NONE:
 		uart_config.enableRxRTS = false;
 		uart_config.enableTxCTS = false;
 		break;
 	case UART_CFG_FLOW_CTRL_RTS_CTS:
 		uart_config.enableRxRTS = true;
 		uart_config.enableTxCTS = true;
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	switch (cfg->parity) {
 	case UART_CFG_PARITY_NONE:
 		uart_config.parityMode = kUART_ParityDisabled;
 		break;
 	case UART_CFG_PARITY_EVEN:
 		uart_config.parityMode = kUART_ParityEven;
 		break;
 	case UART_CFG_PARITY_ODD:
 		uart_config.parityMode = kUART_ParityOdd;
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	retval = UART_Init(config->base, &uart_config, clock_freq);
 	if (retval != kStatus_Success) {
 		return -EINVAL;
 	}

 	data->uart_cfg = *cfg;

 	return 0;
 }

 static int uart_mcux_config_get(const struct device *dev,
 				struct uart_config *cfg)
 {
 	struct uart_mcux_data *data = dev->data;

 	*cfg = data->uart_cfg;

 	return 0;
 }

 static int uart_mcux_poll_in(const struct device *dev, unsigned char *c)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t flags = UART_GetStatusFlags(config->base);
 	int ret = -1;

 	if (flags & kUART_RxDataRegFullFlag) {
 		*c = UART_ReadByte(config->base);
 		ret = 0;
 	}

 	return ret;
 }

 static void uart_mcux_poll_out(const struct device *dev, unsigned char c)
 {
 	const struct uart_mcux_config *config = dev->config;

 	while (!(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {
 	}

 	UART_WriteByte(config->base, c);
 }

 static int uart_mcux_err_check(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t flags = UART_GetStatusFlags(config->base);
 	int err = 0;

 	if (flags & kUART_RxOverrunFlag) {
 		err |= UART_ERROR_OVERRUN;
 	}

 	if (flags & kUART_ParityErrorFlag) {
 		err |= UART_ERROR_PARITY;
 	}

 	if (flags & kUART_FramingErrorFlag) {
 		err |= UART_ERROR_FRAMING;
 	}

 	UART_ClearStatusFlags(config->base, kUART_RxOverrunFlag |
 					    kUART_ParityErrorFlag |
 					    kUART_FramingErrorFlag);

 	return err;
 }

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static int uart_mcux_fifo_fill(const struct device *dev,
 			       const uint8_t *tx_data,
 			       int len)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint8_t num_tx = 0U;

 	while ((len - num_tx > 0) &&
 	       (UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {

 		UART_WriteByte(config->base, tx_data[num_tx++]);
 	}

 	return num_tx;
 }

 static int uart_mcux_fifo_read(const struct device *dev, uint8_t *rx_data,
 			       const int len)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint8_t num_rx = 0U;

 	while ((len - num_rx > 0) &&
 	       (UART_GetStatusFlags(config->base) & kUART_RxDataRegFullFlag)) {

 		rx_data[num_rx++] = UART_ReadByte(config->base);
 	}

 	return num_rx;
 }

 static void uart_mcux_irq_tx_enable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;

 	UART_EnableInterrupts(config->base, mask);
 }

 static void uart_mcux_irq_tx_disable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;

 	UART_DisableInterrupts(config->base, mask);
 }

 static int uart_mcux_irq_tx_complete(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t flags = UART_GetStatusFlags(config->base);

 	return (flags & kUART_TransmissionCompleteFlag) != 0U;
 }

 static int uart_mcux_irq_tx_ready(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;
 	uint32_t flags = UART_GetStatusFlags(config->base);

 	return (UART_GetEnabledInterrupts(config->base) & mask)
 		&& (flags & kUART_TxDataRegEmptyFlag);
 }

 static void uart_mcux_irq_rx_enable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

 	UART_EnableInterrupts(config->base, mask);
 }

 static void uart_mcux_irq_rx_disable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

 	UART_DisableInterrupts(config->base, mask);
 }

 static int uart_mcux_irq_rx_full(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t flags = UART_GetStatusFlags(config->base);

 	return (flags & kUART_RxDataRegFullFlag) != 0U;
 }

 static int uart_mcux_irq_rx_pending(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

 	return (UART_GetEnabledInterrupts(config->base) & mask)
 		&& uart_mcux_irq_rx_full(dev);
 }

 static void uart_mcux_irq_err_enable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_NoiseErrorInterruptEnable |
 			kUART_FramingErrorInterruptEnable |
 			kUART_ParityErrorInterruptEnable;

 	UART_EnableInterrupts(config->base, mask);
 }

 static void uart_mcux_irq_err_disable(const struct device *dev)
 {
 	const struct uart_mcux_config *config = dev->config;
 	uint32_t mask = kUART_NoiseErrorInterruptEnable |
 			kUART_FramingErrorInterruptEnable |
 			kUART_ParityErrorInterruptEnable;

 	UART_DisableInterrupts(config->base, mask);
 }

 static int uart_mcux_irq_is_pending(const struct device *dev)
 {
 	return uart_mcux_irq_tx_ready(dev) || uart_mcux_irq_rx_pending(dev);
 }

 static int uart_mcux_irq_update(const struct device *dev)
 {
 	return 1;
 }

 static void uart_mcux_irq_callback_set(const struct device *dev,
 				       uart_irq_callback_user_data_t cb,
 				       void *cb_data)
 {
 	struct uart_mcux_data *data = dev->data;

 	data->callback = cb;
 	data->cb_data = cb_data;
 }

 static void uart_mcux_isr(const struct device *dev)
 {
 	struct uart_mcux_data *data = dev->data;

 	if (data->callback) {
 		data->callback(dev, data->cb_data);
 	}
 }
 #endif /* CONFIG_UART_INTERRUPT_DRIVEN */

 static int uart_mcux_init(const struct device *dev)
 {
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	const struct uart_mcux_config *config = dev->config;
 #endif
 	struct uart_mcux_data *data = dev->data;
 	int err;

 	err = uart_mcux_configure(dev, &data->uart_cfg);
 	if (err != 0) {
 		return err;
 	}

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	config->irq_config_func(dev);
 #endif

 	return 0;
 }

 static const struct uart_driver_api uart_mcux_driver_api = {
 	.poll_in = uart_mcux_poll_in,
 	.poll_out = uart_mcux_poll_out,
 	.err_check = uart_mcux_err_check,
 	.configure = uart_mcux_configure,
 	.config_get = uart_mcux_config_get,
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	.fifo_fill = uart_mcux_fifo_fill,
 	.fifo_read = uart_mcux_fifo_read,
 	.irq_tx_enable = uart_mcux_irq_tx_enable,
 	.irq_tx_disable = uart_mcux_irq_tx_disable,
 	.irq_tx_complete = uart_mcux_irq_tx_complete,
 	.irq_tx_ready = uart_mcux_irq_tx_ready,
 	.irq_rx_enable = uart_mcux_irq_rx_enable,
 	.irq_rx_disable = uart_mcux_irq_rx_disable,
 	.irq_rx_ready = uart_mcux_irq_rx_full,
 	.irq_err_enable = uart_mcux_irq_err_enable,
 	.irq_err_disable = uart_mcux_irq_err_disable,
 	.irq_is_pending = uart_mcux_irq_is_pending,
 	.irq_update = uart_mcux_irq_update,
 	.irq_callback_set = uart_mcux_irq_callback_set,
 #endif
 };

 #define UART_MCUX_DECLARE_CFG(n, IRQ_FUNC_INIT)				\
 static const struct uart_mcux_config uart_mcux_##n##_config = {		\
 	.base = (UART_Type *)DT_INST_REG_ADDR(n),			\
 	.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)),		\
 	.clock_subsys = (clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name),\
 	IRQ_FUNC_INIT							\
 }

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 #define UART_MCUX_CONFIG_FUNC(n)					\
 	static void uart_mcux_config_func_##n(const struct device *dev)	\
 	{								\
 		IRQ_CONNECT(DT_INST_IRQ_BY_NAME(n, status, irq),	\
 			    DT_INST_IRQ_BY_NAME(n, status, priority),	\
 			    uart_mcux_isr, DEVICE_DT_INST_GET(n), 0);	\
 									\
 		irq_enable(DT_INST_IRQ_BY_NAME(n, status, irq));	\
 									\
 		IRQ_CONNECT(DT_INST_IRQ_BY_NAME(n, error, irq),		\
 			    DT_INST_IRQ_BY_NAME(n, error, priority),	\
 			    uart_mcux_isr, DEVICE_DT_INST_GET(n), 0);	\
 									\
 		irq_enable(DT_INST_IRQ_BY_NAME(n, error, irq));		\
 	}
 #define UART_MCUX_IRQ_CFG_FUNC_INIT(n)					\
 	.irq_config_func = uart_mcux_config_func_##n
 #define UART_MCUX_INIT_CFG(n)						\
 	UART_MCUX_DECLARE_CFG(n, UART_MCUX_IRQ_CFG_FUNC_INIT(n))
 #else
 #define UART_MCUX_CONFIG_FUNC(n)
 #define UART_MCUX_IRQ_CFG_FUNC_INIT
 #define UART_MCUX_INIT_CFG(n)						\
 	UART_MCUX_DECLARE_CFG(n, UART_MCUX_IRQ_CFG_FUNC_INIT)
 #endif

 #define UART_MCUX_INIT(n)						\
 									\
 	static struct uart_mcux_data uart_mcux_##n##_data = {		\
 		.uart_cfg = {						\
 			.stop_bits = UART_CFG_STOP_BITS_1,		\
 			.data_bits = UART_CFG_DATA_BITS_8,		\
 			.baudrate  = DT_INST_PROP(n, current_speed),	\
 			.parity    = UART_CFG_PARITY_NONE,		\
 			.flow_ctrl = DT_INST_PROP(n, hw_flow_control) ?	\
 				UART_CFG_FLOW_CTRL_RTS_CTS : UART_CFG_FLOW_CTRL_NONE,\
 		},							\
 	};								\
 									\
 	static const struct uart_mcux_config uart_mcux_##n##_config;	\
 									\
 	DEVICE_DT_INST_DEFINE(n,					\
 			    &uart_mcux_init,				\
 			    NULL,					\
 			    &uart_mcux_##n##_data,			\
 			    &uart_mcux_##n##_config,			\
 			    PRE_KERNEL_1,				\
 			    CONFIG_KERNEL_INIT_PRIORITY_DEVICE,		\
 			    &uart_mcux_driver_api);			\
 									\
 	UART_MCUX_CONFIG_FUNC(n)					\
 									\
 	UART_MCUX_INIT_CFG(n);

 DT_INST_FOREACH_STATUS_OKAY(UART_MCUX_INIT)
	/*
	* Copyright (c) 2017, NXP
	* Copyright (c) 2020 PHYTEC Messtechnik GmbH
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	#define DT_DRV_COMPAT nxp_kinetis_uart

	#include <errno.h>
	#include <device.h>
	#include <drivers/uart.h>
	#include <drivers/clock_control.h>
	#include <fsl_uart.h>
	#include <soc.h>

	struct uart_mcux_config {
	UART_Type *base;
	const struct device *clock_dev;
	clock_control_subsys_t clock_subsys;
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	void (irq_config_func)(const struct device dev);
	#endif
	};

	struct uart_mcux_data {
	struct uart_config uart_cfg;
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	uart_irq_callback_user_data_t callback;
	void *cb_data;
	#endif
	};

	static int uart_mcux_configure(const struct device *dev,
	const struct uart_config *cfg)
	{
	const struct uart_mcux_config *config = dev->config;
	struct uart_mcux_data *data = dev->data;
	uart_config_t uart_config;
	uint32_t clock_freq;
	status_t retval;

	if (clock_control_get_rate(config->clock_dev, config->clock_subsys,
	&clock_freq)) {
	return -EINVAL;
	}

	UART_GetDefaultConfig(&uart_config);

	uart_config.enableTx = true;
	uart_config.enableRx = true;
	uart_config.baudRate_Bps = cfg->baudrate;

	switch (cfg->stop_bits) {
	case UART_CFG_STOP_BITS_1:
	#if defined(FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT) && \
	FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
	uart_config.stopBitCount = kUART_OneStopBit;
	break;
	case UART_CFG_STOP_BITS_2:
	uart_config.stopBitCount = kUART_TwoStopBit;
	#endif
	break;
	default:
	return -ENOTSUP;
	}

	switch (cfg->flow_ctrl) {
	case UART_CFG_FLOW_CTRL_NONE:
	uart_config.enableRxRTS = false;
	uart_config.enableTxCTS = false;
	break;
	case UART_CFG_FLOW_CTRL_RTS_CTS:
	uart_config.enableRxRTS = true;
	uart_config.enableTxCTS = true;
	break;
	default:
	return -ENOTSUP;
	}

	switch (cfg->parity) {
	case UART_CFG_PARITY_NONE:
	uart_config.parityMode = kUART_ParityDisabled;
	break;
	case UART_CFG_PARITY_EVEN:
	uart_config.parityMode = kUART_ParityEven;
	break;
	case UART_CFG_PARITY_ODD:
	uart_config.parityMode = kUART_ParityOdd;
	break;
	default:
	return -ENOTSUP;
	}

	retval = UART_Init(config->base, &uart_config, clock_freq);
	if (retval != kStatus_Success) {
	return -EINVAL;
	}

	data->uart_cfg = *cfg;

	return 0;
	}

	static int uart_mcux_config_get(const struct device *dev,
	struct uart_config *cfg)
	{
	struct uart_mcux_data *data = dev->data;

	*cfg = data->uart_cfg;

	return 0;
	}

	static int uart_mcux_poll_in(const struct device dev, unsigned char c)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t flags = UART_GetStatusFlags(config->base);
	int ret = -1;

	if (flags & kUART_RxDataRegFullFlag) {
	*c = UART_ReadByte(config->base);
	ret = 0;
	}

	return ret;
	}

	static void uart_mcux_poll_out(const struct device *dev, unsigned char c)
	{
	const struct uart_mcux_config *config = dev->config;

	while (!(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {
	}

	UART_WriteByte(config->base, c);
	}

	static int uart_mcux_err_check(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t flags = UART_GetStatusFlags(config->base);
	int err = 0;

	if (flags & kUART_RxOverrunFlag) {
	err \|= UART_ERROR_OVERRUN;
	}

	if (flags & kUART_ParityErrorFlag) {
	err \|= UART_ERROR_PARITY;
	}

	if (flags & kUART_FramingErrorFlag) {
	err \|= UART_ERROR_FRAMING;
	}

	UART_ClearStatusFlags(config->base, kUART_RxOverrunFlag \|
	kUART_ParityErrorFlag \|
	kUART_FramingErrorFlag);

	return err;
	}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static int uart_mcux_fifo_fill(const struct device *dev,
	const uint8_t *tx_data,
	int len)
	{
	const struct uart_mcux_config *config = dev->config;
	uint8_t num_tx = 0U;

	while ((len - num_tx > 0) &&
	(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {

	UART_WriteByte(config->base, tx_data[num_tx++]);
	}

	return num_tx;
	}

	static int uart_mcux_fifo_read(const struct device dev, uint8_t rx_data,
	const int len)
	{
	const struct uart_mcux_config *config = dev->config;
	uint8_t num_rx = 0U;

	while ((len - num_rx > 0) &&
	(UART_GetStatusFlags(config->base) & kUART_RxDataRegFullFlag)) {

	rx_data[num_rx++] = UART_ReadByte(config->base);
	}

	return num_rx;
	}

	static void uart_mcux_irq_tx_enable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;

	UART_EnableInterrupts(config->base, mask);
	}

	static void uart_mcux_irq_tx_disable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;

	UART_DisableInterrupts(config->base, mask);
	}

	static int uart_mcux_irq_tx_complete(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t flags = UART_GetStatusFlags(config->base);

	return (flags & kUART_TransmissionCompleteFlag) != 0U;
	}

	static int uart_mcux_irq_tx_ready(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_TxDataRegEmptyInterruptEnable;
	uint32_t flags = UART_GetStatusFlags(config->base);

	return (UART_GetEnabledInterrupts(config->base) & mask)
	&& (flags & kUART_TxDataRegEmptyFlag);
	}

	static void uart_mcux_irq_rx_enable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

	UART_EnableInterrupts(config->base, mask);
	}

	static void uart_mcux_irq_rx_disable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

	UART_DisableInterrupts(config->base, mask);
	}

	static int uart_mcux_irq_rx_full(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t flags = UART_GetStatusFlags(config->base);

	return (flags & kUART_RxDataRegFullFlag) != 0U;
	}

	static int uart_mcux_irq_rx_pending(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_RxDataRegFullInterruptEnable;

	return (UART_GetEnabledInterrupts(config->base) & mask)
	&& uart_mcux_irq_rx_full(dev);
	}

	static void uart_mcux_irq_err_enable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_NoiseErrorInterruptEnable \|
	kUART_FramingErrorInterruptEnable \|
	kUART_ParityErrorInterruptEnable;

	UART_EnableInterrupts(config->base, mask);
	}

	static void uart_mcux_irq_err_disable(const struct device *dev)
	{
	const struct uart_mcux_config *config = dev->config;
	uint32_t mask = kUART_NoiseErrorInterruptEnable \|
	kUART_FramingErrorInterruptEnable \|
	kUART_ParityErrorInterruptEnable;

	UART_DisableInterrupts(config->base, mask);
	}

	static int uart_mcux_irq_is_pending(const struct device *dev)
	{
	return uart_mcux_irq_tx_ready(dev) \|\| uart_mcux_irq_rx_pending(dev);
	}

	static int uart_mcux_irq_update(const struct device *dev)
	{
	return 1;
	}

	static void uart_mcux_irq_callback_set(const struct device *dev,
	uart_irq_callback_user_data_t cb,
	void *cb_data)
	{
	struct uart_mcux_data *data = dev->data;

	data->callback = cb;
	data->cb_data = cb_data;
	}

	static void uart_mcux_isr(const struct device *dev)
	{
	struct uart_mcux_data *data = dev->data;

	if (data->callback) {
	data->callback(dev, data->cb_data);
	}
	}
	#endif /* CONFIG_UART_INTERRUPT_DRIVEN */

	static int uart_mcux_init(const struct device *dev)
	{
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	const struct uart_mcux_config *config = dev->config;
	#endif
	struct uart_mcux_data *data = dev->data;
	int err;

	err = uart_mcux_configure(dev, &data->uart_cfg);
	if (err != 0) {
	return err;
	}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	config->irq_config_func(dev);
	#endif

	return 0;
	}

	static const struct uart_driver_api uart_mcux_driver_api = {
	.poll_in = uart_mcux_poll_in,
	.poll_out = uart_mcux_poll_out,
	.err_check = uart_mcux_err_check,
	.configure = uart_mcux_configure,
	.config_get = uart_mcux_config_get,
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	.fifo_fill = uart_mcux_fifo_fill,
	.fifo_read = uart_mcux_fifo_read,
	.irq_tx_enable = uart_mcux_irq_tx_enable,
	.irq_tx_disable = uart_mcux_irq_tx_disable,
	.irq_tx_complete = uart_mcux_irq_tx_complete,
	.irq_tx_ready = uart_mcux_irq_tx_ready,
	.irq_rx_enable = uart_mcux_irq_rx_enable,
	.irq_rx_disable = uart_mcux_irq_rx_disable,
	.irq_rx_ready = uart_mcux_irq_rx_full,
	.irq_err_enable = uart_mcux_irq_err_enable,
	.irq_err_disable = uart_mcux_irq_err_disable,
	.irq_is_pending = uart_mcux_irq_is_pending,
	.irq_update = uart_mcux_irq_update,
	.irq_callback_set = uart_mcux_irq_callback_set,
	#endif
	};

	#define UART_MCUX_DECLARE_CFG(n, IRQ_FUNC_INIT) \
	static const struct uart_mcux_config uart_mcux_##n##_config = { \
	.base = (UART_Type *)DT_INST_REG_ADDR(n), \
	.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \
	.clock_subsys = (clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name),\
	IRQ_FUNC_INIT \
	}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	#define UART_MCUX_CONFIG_FUNC(n) \
	static void uart_mcux_config_func_##n(const struct device *dev) \
	{ \
	IRQ_CONNECT(DT_INST_IRQ_BY_NAME(n, status, irq), \
	DT_INST_IRQ_BY_NAME(n, status, priority), \
	uart_mcux_isr, DEVICE_DT_INST_GET(n), 0); \
	\
	irq_enable(DT_INST_IRQ_BY_NAME(n, status, irq)); \
	\
	IRQ_CONNECT(DT_INST_IRQ_BY_NAME(n, error, irq), \
	DT_INST_IRQ_BY_NAME(n, error, priority), \
	uart_mcux_isr, DEVICE_DT_INST_GET(n), 0); \
	\
	irq_enable(DT_INST_IRQ_BY_NAME(n, error, irq)); \
	}
	#define UART_MCUX_IRQ_CFG_FUNC_INIT(n) \
	.irq_config_func = uart_mcux_config_func_##n
	#define UART_MCUX_INIT_CFG(n) \
	UART_MCUX_DECLARE_CFG(n, UART_MCUX_IRQ_CFG_FUNC_INIT(n))
	#else
	#define UART_MCUX_CONFIG_FUNC(n)
	#define UART_MCUX_IRQ_CFG_FUNC_INIT
	#define UART_MCUX_INIT_CFG(n) \
	UART_MCUX_DECLARE_CFG(n, UART_MCUX_IRQ_CFG_FUNC_INIT)
	#endif

	#define UART_MCUX_INIT(n) \
	\
	static struct uart_mcux_data uart_mcux_##n##_data = { \
	.uart_cfg = { \
	.stop_bits = UART_CFG_STOP_BITS_1, \
	.data_bits = UART_CFG_DATA_BITS_8, \
	.baudrate = DT_INST_PROP(n, current_speed), \
	.parity = UART_CFG_PARITY_NONE, \
	.flow_ctrl = DT_INST_PROP(n, hw_flow_control) ? \
	UART_CFG_FLOW_CTRL_RTS_CTS : UART_CFG_FLOW_CTRL_NONE,\
	}, \
	}; \
	\
	static const struct uart_mcux_config uart_mcux_##n##_config; \
	\
	DEVICE_DT_INST_DEFINE(n, \
	&uart_mcux_init, \
	NULL, \
	&uart_mcux_##n##_data, \
	&uart_mcux_##n##_config, \
	PRE_KERNEL_1, \
	CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
	&uart_mcux_driver_api); \
	\
	UART_MCUX_CONFIG_FUNC(n) \
	\
	UART_MCUX_INIT_CFG(n);

	DT_INST_FOREACH_STATUS_OKAY(UART_MCUX_INIT)