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

 /*
  * Copyright (c) 2018, Christian Taedcke, Diego Sueiro
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 #define DT_DRV_COMPAT silabs_gecko_leuart

 #include <errno.h>
 #include <zephyr/drivers/uart.h>
 #include <em_leuart.h>
 #include <em_gpio.h>
 #include <em_cmu.h>
 #include <soc.h>

 #define LEUART_PREFIX cmuClock_LEUART
 #define CLOCK_ID_PRFX2(prefix, suffix) prefix##suffix
 #define CLOCK_ID_PRFX(prefix, suffix) CLOCK_ID_PRFX2(prefix, suffix)
 #define CLOCK_LEUART(id) CLOCK_ID_PRFX(LEUART_PREFIX, id)

 #define DEV_BASE(dev) \
 	((LEUART_TypeDef *) \
 	 ((const struct leuart_gecko_config * const)(dev)->config)->base)

 struct leuart_gecko_config {
 	LEUART_TypeDef *base;
 	CMU_Clock_TypeDef clock;
 	uint32_t baud_rate;
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	void (*irq_config_func)(const struct device *dev);
 #endif
 	struct soc_gpio_pin pin_rx;
 	struct soc_gpio_pin pin_tx;
 #ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
 	uint8_t loc_rx;
 	uint8_t loc_tx;
 #else
 	uint8_t loc;
 #endif
 };

 struct leuart_gecko_data {
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	uart_irq_callback_user_data_t callback;
 	void *cb_data;
 #endif
 };

 static int leuart_gecko_poll_in(const struct device *dev, unsigned char *c)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t flags = LEUART_StatusGet(base);

 	if (flags & LEUART_STATUS_RXDATAV) {
 		*c = LEUART_Rx(base);
 		return 0;
 	}

 	return -1;
 }

 static void leuart_gecko_poll_out(const struct device *dev, unsigned char c)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);

 	/* LEUART_Tx function already waits for the transmit buffer being empty
 	 * and and waits for the bus to be free to transmit.
 	 */
 	LEUART_Tx(base, c);
 }

 static int leuart_gecko_err_check(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t flags = LEUART_IntGet(base);
 	int err = 0;

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

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

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

 	LEUART_IntClear(base, LEUART_IF_RXOF |
 		       LEUART_IF_PERR |
 		       LEUART_IF_FERR);

 	return err;
 }

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static int leuart_gecko_fifo_fill(const struct device *dev,
 				  const uint8_t *tx_data,
 				  int len)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint8_t num_tx = 0U;

 	while ((len - num_tx > 0) &&
 	       (base->STATUS & LEUART_STATUS_TXBL)) {

 		base->TXDATA = (uint32_t)tx_data[num_tx++];
 	}

 	return num_tx;
 }

 static int leuart_gecko_fifo_read(const struct device *dev, uint8_t *rx_data,
 				  const int len)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint8_t num_rx = 0U;

 	while ((len - num_rx > 0) &&
 	       (base->STATUS & LEUART_STATUS_RXDATAV)) {

 		rx_data[num_rx++] = (uint8_t)base->RXDATA;
 	}

 	return num_rx;
 }

 static void leuart_gecko_irq_tx_enable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t mask = LEUART_IEN_TXBL | LEUART_IEN_TXC;

 	LEUART_IntEnable(base, mask);
 }

 static void leuart_gecko_irq_tx_disable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t mask = LEUART_IEN_TXBL | LEUART_IEN_TXC;

 	LEUART_IntDisable(base, mask);
 }

 static int leuart_gecko_irq_tx_complete(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t flags = LEUART_IntGet(base);

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

 static int leuart_gecko_irq_tx_ready(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t flags = LEUART_IntGet(base);

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

 static void leuart_gecko_irq_rx_enable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t mask = LEUART_IEN_RXDATAV;

 	LEUART_IntEnable(base, mask);
 }

 static void leuart_gecko_irq_rx_disable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t mask = LEUART_IEN_RXDATAV;

 	LEUART_IntDisable(base, mask);
 }

 static int leuart_gecko_irq_rx_full(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t flags = LEUART_IntGet(base);

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

 static int leuart_gecko_irq_rx_ready(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	uint32_t mask = LEUART_IEN_RXDATAV;

 	return (base->IEN & mask)
 		&& leuart_gecko_irq_rx_full(dev);
 }

 static void leuart_gecko_irq_err_enable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);

 	LEUART_IntEnable(base, LEUART_IF_RXOF |
 			 LEUART_IF_PERR |
 			 LEUART_IF_FERR);
 }

 static void leuart_gecko_irq_err_disable(const struct device *dev)
 {
 	LEUART_TypeDef *base = DEV_BASE(dev);

 	LEUART_IntDisable(base, LEUART_IF_RXOF |
 			 LEUART_IF_PERR |
 			 LEUART_IF_FERR);
 }

 static int leuart_gecko_irq_is_pending(const struct device *dev)
 {
 	return leuart_gecko_irq_tx_ready(dev) || leuart_gecko_irq_rx_ready(dev);
 }

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

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

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

 static void leuart_gecko_isr(const struct device *dev)
 {
 	struct leuart_gecko_data *data = dev->data;

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

 static void leuart_gecko_init_pins(const struct device *dev)
 {
 	const struct leuart_gecko_config *config = dev->config;
 	LEUART_TypeDef *base = DEV_BASE(dev);

 	soc_gpio_configure(&config->pin_rx);
 	soc_gpio_configure(&config->pin_tx);

 #ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
 	base->ROUTEPEN = LEUART_ROUTEPEN_RXPEN | LEUART_ROUTEPEN_TXPEN;
 	base->ROUTELOC0 =
 		(config->loc_tx << _LEUART_ROUTELOC0_TXLOC_SHIFT) |
 		(config->loc_rx << _LEUART_ROUTELOC0_RXLOC_SHIFT);
 #else
 	base->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN
 		| (config->loc << 8);
 #endif
 }

 static int leuart_gecko_init(const struct device *dev)
 {
 	const struct leuart_gecko_config *config = dev->config;
 	LEUART_TypeDef *base = DEV_BASE(dev);
 	LEUART_Init_TypeDef leuartInit = LEUART_INIT_DEFAULT;

 	/* The peripheral and gpio clock are already enabled from soc and gpio
 	 * driver
 	 */

 	leuartInit.baudrate = config->baud_rate;

 	/* Enable CORE LE clock in order to access LE modules */
 	CMU_ClockEnable(cmuClock_CORELE, true);

 	/* Select LFXO for LEUARTs (and wait for it to stabilize) */
 	CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFXO);

 	/* Enable LEUART clock */
 	CMU_ClockEnable(config->clock, true);

 	/* Init LEUART */
 	LEUART_Init(base, &leuartInit);

 	/* Initialize LEUART pins */
 	leuart_gecko_init_pins(dev);

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

 	return 0;
 }

 static const struct uart_driver_api leuart_gecko_driver_api = {
 	.poll_in = leuart_gecko_poll_in,
 	.poll_out = leuart_gecko_poll_out,
 	.err_check = leuart_gecko_err_check,
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	.fifo_fill = leuart_gecko_fifo_fill,
 	.fifo_read = leuart_gecko_fifo_read,
 	.irq_tx_enable = leuart_gecko_irq_tx_enable,
 	.irq_tx_disable = leuart_gecko_irq_tx_disable,
 	.irq_tx_complete = leuart_gecko_irq_tx_complete,
 	.irq_tx_ready = leuart_gecko_irq_tx_ready,
 	.irq_rx_enable = leuart_gecko_irq_rx_enable,
 	.irq_rx_disable = leuart_gecko_irq_rx_disable,
 	.irq_rx_ready = leuart_gecko_irq_rx_ready,
 	.irq_err_enable = leuart_gecko_irq_err_enable,
 	.irq_err_disable = leuart_gecko_irq_err_disable,
 	.irq_is_pending = leuart_gecko_irq_is_pending,
 	.irq_update = leuart_gecko_irq_update,
 	.irq_callback_set = leuart_gecko_irq_callback_set,
 #endif
 };

 #if DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay)

 #define PIN_LEUART_0_RXD {DT_INST_PROP_BY_IDX(0, location_rx, 1), \
 		DT_INST_PROP_BY_IDX(0, location_rx, 2), gpioModeInput, 1}
 #define PIN_LEUART_0_TXD {DT_INST_PROP_BY_IDX(0, location_tx, 1), \
 		DT_INST_PROP_BY_IDX(0, location_tx, 2), gpioModePushPull, 1}

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static void leuart_gecko_config_func_0(const struct device *dev);
 #endif

 static const struct leuart_gecko_config leuart_gecko_0_config = {
 	.base = (LEUART_TypeDef *)DT_INST_REG_ADDR(0),
 	.clock = CLOCK_LEUART(DT_INST_PROP(0, peripheral_id)),
 	.baud_rate = DT_INST_PROP(0, current_speed),
 	.pin_rx = PIN_LEUART_0_RXD,
 	.pin_tx = PIN_LEUART_0_TXD,
 #ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
 	.loc_rx = DT_INST_PROP_BY_IDX(0, location_rx, 0),
 	.loc_tx = DT_INST_PROP_BY_IDX(0, location_tx, 0),
 #else
 #if DT_INST_PROP_BY_IDX(0, location_rx, 0) \
 	!= DT_INST_PROP_BY_IDX(0, location_tx, 0)
 #error LEUART_0 DTS location-* properties must have identical value
 #endif
 	.loc = DT_INST_PROP_BY_IDX(0, location_rx, 0),
 #endif
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	.irq_config_func = leuart_gecko_config_func_0,
 #endif
 };

 static struct leuart_gecko_data leuart_gecko_0_data;

 DEVICE_DT_INST_DEFINE(0, &leuart_gecko_init,
 		    NULL, &leuart_gecko_0_data,
 		    &leuart_gecko_0_config, PRE_KERNEL_1,
 		    CONFIG_SERIAL_INIT_PRIORITY,
 		    &leuart_gecko_driver_api);

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static void leuart_gecko_config_func_0(const struct device *dev)
 {
 	IRQ_CONNECT(DT_INST_IRQN(0),
 		    DT_INST_IRQ(0, priority),
 		    leuart_gecko_isr, DEVICE_DT_INST_GET(0), 0);

 	irq_enable(DT_INST_IRQN(0));
 }
 #endif

 #endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay) */

 #if DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay)

 #define PIN_LEUART_1_RXD {DT_INST_PROP_BY_IDX(1, location_rx, 1), \
 		DT_INST_PROP_BY_IDX(1, location_rx, 2), gpioModeInput, 1}
 #define PIN_LEUART_1_TXD {DT_INST_PROP_BY_IDX(1, location_tx, 1), \
 		DT_INST_PROP_BY_IDX(1, location_tx, 2), gpioModePushPull, 1}

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static void leuart_gecko_config_func_1(const struct device *dev);
 #endif

 static const struct leuart_gecko_config leuart_gecko_1_config = {
 	.base = (LEUART_TypeDef *)DT_INST_REG_ADDR(1),
 	.clock = CLOCK_LEUART(DT_INST_PROP(1, peripheral_id)),
 	.baud_rate = DT_INST_PROP(1, current_speed),
 	.pin_rx = PIN_LEUART_1_RXD,
 	.pin_tx = PIN_LEUART_1_TXD,
 #ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
 	.loc_rx = DT_INST_PROP_BY_IDX(1, location_rx, 0),
 	.loc_tx = DT_INST_PROP_BY_IDX(1, location_tx, 0),
 #else
 #if DT_INST_PROP_BY_IDX(1, location_rx, 0) \
 	!= DT_INST_PROP_BY_IDX(1, location_tx, 0)
 #error LEUART_1 DTS location-* properties must have identical value
 #endif
 	.loc = DT_INST_PROP_BY_IDX(1, location_rx, 0),
 #endif
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	.irq_config_func = leuart_gecko_config_func_1,
 #endif
 };

 static struct leuart_gecko_data leuart_gecko_1_data;

 DEVICE_DT_INST_DEFINE(1, &leuart_gecko_init,
 		    NULL, &leuart_gecko_1_data,
 		    &leuart_gecko_1_config, PRE_KERNEL_1,
 		    CONFIG_SERIAL_INIT_PRIORITY,
 		    &leuart_gecko_driver_api);

 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 static void leuart_gecko_config_func_1(const struct device *dev)
 {
 	IRQ_CONNECT(DT_INST_IRQN(1),
 		    DT_INST_IRQ(1, priority),
 		    leuart_gecko_isr, DEVICE_DT_INST_GET(1), 0);

 	irq_enable(DT_INST_IRQN(1));
 }
 #endif

 #endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay) */
	/*
	* Copyright (c) 2018, Christian Taedcke, Diego Sueiro
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	#define DT_DRV_COMPAT silabs_gecko_leuart

	#include <errno.h>
	#include <zephyr/drivers/uart.h>
	#include <em_leuart.h>
	#include <em_gpio.h>
	#include <em_cmu.h>
	#include <soc.h>

	#define LEUART_PREFIX cmuClock_LEUART
	#define CLOCK_ID_PRFX2(prefix, suffix) prefix##suffix
	#define CLOCK_ID_PRFX(prefix, suffix) CLOCK_ID_PRFX2(prefix, suffix)
	#define CLOCK_LEUART(id) CLOCK_ID_PRFX(LEUART_PREFIX, id)

	#define DEV_BASE(dev) \
	((LEUART_TypeDef *) \
	((const struct leuart_gecko_config * const)(dev)->config)->base)

	struct leuart_gecko_config {
	LEUART_TypeDef *base;
	CMU_Clock_TypeDef clock;
	uint32_t baud_rate;
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	void (irq_config_func)(const struct device dev);
	#endif
	struct soc_gpio_pin pin_rx;
	struct soc_gpio_pin pin_tx;
	#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
	uint8_t loc_rx;
	uint8_t loc_tx;
	#else
	uint8_t loc;
	#endif
	};

	struct leuart_gecko_data {
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	uart_irq_callback_user_data_t callback;
	void *cb_data;
	#endif
	};

	static int leuart_gecko_poll_in(const struct device dev, unsigned char c)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t flags = LEUART_StatusGet(base);

	if (flags & LEUART_STATUS_RXDATAV) {
	*c = LEUART_Rx(base);
	return 0;
	}

	return -1;
	}

	static void leuart_gecko_poll_out(const struct device *dev, unsigned char c)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);

	/* LEUART_Tx function already waits for the transmit buffer being empty
	* and and waits for the bus to be free to transmit.
	*/
	LEUART_Tx(base, c);
	}

	static int leuart_gecko_err_check(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t flags = LEUART_IntGet(base);
	int err = 0;

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

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

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

	LEUART_IntClear(base, LEUART_IF_RXOF \|
	LEUART_IF_PERR \|
	LEUART_IF_FERR);

	return err;
	}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static int leuart_gecko_fifo_fill(const struct device *dev,
	const uint8_t *tx_data,
	int len)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint8_t num_tx = 0U;

	while ((len - num_tx > 0) &&
	(base->STATUS & LEUART_STATUS_TXBL)) {

	base->TXDATA = (uint32_t)tx_data[num_tx++];
	}

	return num_tx;
	}

	static int leuart_gecko_fifo_read(const struct device dev, uint8_t rx_data,
	const int len)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint8_t num_rx = 0U;

	while ((len - num_rx > 0) &&
	(base->STATUS & LEUART_STATUS_RXDATAV)) {

	rx_data[num_rx++] = (uint8_t)base->RXDATA;
	}

	return num_rx;
	}

	static void leuart_gecko_irq_tx_enable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t mask = LEUART_IEN_TXBL \| LEUART_IEN_TXC;

	LEUART_IntEnable(base, mask);
	}

	static void leuart_gecko_irq_tx_disable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t mask = LEUART_IEN_TXBL \| LEUART_IEN_TXC;

	LEUART_IntDisable(base, mask);
	}

	static int leuart_gecko_irq_tx_complete(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t flags = LEUART_IntGet(base);

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

	static int leuart_gecko_irq_tx_ready(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t flags = LEUART_IntGet(base);

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

	static void leuart_gecko_irq_rx_enable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t mask = LEUART_IEN_RXDATAV;

	LEUART_IntEnable(base, mask);
	}

	static void leuart_gecko_irq_rx_disable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t mask = LEUART_IEN_RXDATAV;

	LEUART_IntDisable(base, mask);
	}

	static int leuart_gecko_irq_rx_full(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t flags = LEUART_IntGet(base);

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

	static int leuart_gecko_irq_rx_ready(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);
	uint32_t mask = LEUART_IEN_RXDATAV;

	return (base->IEN & mask)
	&& leuart_gecko_irq_rx_full(dev);
	}

	static void leuart_gecko_irq_err_enable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);

	LEUART_IntEnable(base, LEUART_IF_RXOF \|
	LEUART_IF_PERR \|
	LEUART_IF_FERR);
	}

	static void leuart_gecko_irq_err_disable(const struct device *dev)
	{
	LEUART_TypeDef *base = DEV_BASE(dev);

	LEUART_IntDisable(base, LEUART_IF_RXOF \|
	LEUART_IF_PERR \|
	LEUART_IF_FERR);
	}

	static int leuart_gecko_irq_is_pending(const struct device *dev)
	{
	return leuart_gecko_irq_tx_ready(dev) \|\| leuart_gecko_irq_rx_ready(dev);
	}

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

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

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

	static void leuart_gecko_isr(const struct device *dev)
	{
	struct leuart_gecko_data *data = dev->data;

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

	static void leuart_gecko_init_pins(const struct device *dev)
	{
	const struct leuart_gecko_config *config = dev->config;
	LEUART_TypeDef *base = DEV_BASE(dev);

	soc_gpio_configure(&config->pin_rx);
	soc_gpio_configure(&config->pin_tx);

	#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
	base->ROUTEPEN = LEUART_ROUTEPEN_RXPEN \| LEUART_ROUTEPEN_TXPEN;
	base->ROUTELOC0 =
	(config->loc_tx << _LEUART_ROUTELOC0_TXLOC_SHIFT) \|
	(config->loc_rx << _LEUART_ROUTELOC0_RXLOC_SHIFT);
	#else
	base->ROUTE = LEUART_ROUTE_RXPEN \| LEUART_ROUTE_TXPEN
	\| (config->loc << 8);
	#endif
	}

	static int leuart_gecko_init(const struct device *dev)
	{
	const struct leuart_gecko_config *config = dev->config;
	LEUART_TypeDef *base = DEV_BASE(dev);
	LEUART_Init_TypeDef leuartInit = LEUART_INIT_DEFAULT;

	/* The peripheral and gpio clock are already enabled from soc and gpio
	* driver
	*/

	leuartInit.baudrate = config->baud_rate;

	/* Enable CORE LE clock in order to access LE modules */
	CMU_ClockEnable(cmuClock_CORELE, true);

	/* Select LFXO for LEUARTs (and wait for it to stabilize) */
	CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFXO);

	/* Enable LEUART clock */
	CMU_ClockEnable(config->clock, true);

	/* Init LEUART */
	LEUART_Init(base, &leuartInit);

	/* Initialize LEUART pins */
	leuart_gecko_init_pins(dev);

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

	return 0;
	}

	static const struct uart_driver_api leuart_gecko_driver_api = {
	.poll_in = leuart_gecko_poll_in,
	.poll_out = leuart_gecko_poll_out,
	.err_check = leuart_gecko_err_check,
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	.fifo_fill = leuart_gecko_fifo_fill,
	.fifo_read = leuart_gecko_fifo_read,
	.irq_tx_enable = leuart_gecko_irq_tx_enable,
	.irq_tx_disable = leuart_gecko_irq_tx_disable,
	.irq_tx_complete = leuart_gecko_irq_tx_complete,
	.irq_tx_ready = leuart_gecko_irq_tx_ready,
	.irq_rx_enable = leuart_gecko_irq_rx_enable,
	.irq_rx_disable = leuart_gecko_irq_rx_disable,
	.irq_rx_ready = leuart_gecko_irq_rx_ready,
	.irq_err_enable = leuart_gecko_irq_err_enable,
	.irq_err_disable = leuart_gecko_irq_err_disable,
	.irq_is_pending = leuart_gecko_irq_is_pending,
	.irq_update = leuart_gecko_irq_update,
	.irq_callback_set = leuart_gecko_irq_callback_set,
	#endif
	};

	#if DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay)

	#define PIN_LEUART_0_RXD {DT_INST_PROP_BY_IDX(0, location_rx, 1), \
	DT_INST_PROP_BY_IDX(0, location_rx, 2), gpioModeInput, 1}
	#define PIN_LEUART_0_TXD {DT_INST_PROP_BY_IDX(0, location_tx, 1), \
	DT_INST_PROP_BY_IDX(0, location_tx, 2), gpioModePushPull, 1}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static void leuart_gecko_config_func_0(const struct device *dev);
	#endif

	static const struct leuart_gecko_config leuart_gecko_0_config = {
	.base = (LEUART_TypeDef *)DT_INST_REG_ADDR(0),
	.clock = CLOCK_LEUART(DT_INST_PROP(0, peripheral_id)),
	.baud_rate = DT_INST_PROP(0, current_speed),
	.pin_rx = PIN_LEUART_0_RXD,
	.pin_tx = PIN_LEUART_0_TXD,
	#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
	.loc_rx = DT_INST_PROP_BY_IDX(0, location_rx, 0),
	.loc_tx = DT_INST_PROP_BY_IDX(0, location_tx, 0),
	#else
	#if DT_INST_PROP_BY_IDX(0, location_rx, 0) \
	!= DT_INST_PROP_BY_IDX(0, location_tx, 0)
	#error LEUART_0 DTS location-* properties must have identical value
	#endif
	.loc = DT_INST_PROP_BY_IDX(0, location_rx, 0),
	#endif
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	.irq_config_func = leuart_gecko_config_func_0,
	#endif
	};

	static struct leuart_gecko_data leuart_gecko_0_data;

	DEVICE_DT_INST_DEFINE(0, &leuart_gecko_init,
	NULL, &leuart_gecko_0_data,
	&leuart_gecko_0_config, PRE_KERNEL_1,
	CONFIG_SERIAL_INIT_PRIORITY,
	&leuart_gecko_driver_api);

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static void leuart_gecko_config_func_0(const struct device *dev)
	{
	IRQ_CONNECT(DT_INST_IRQN(0),
	DT_INST_IRQ(0, priority),
	leuart_gecko_isr, DEVICE_DT_INST_GET(0), 0);

	irq_enable(DT_INST_IRQN(0));
	}
	#endif

	#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay) */

	#if DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay)

	#define PIN_LEUART_1_RXD {DT_INST_PROP_BY_IDX(1, location_rx, 1), \
	DT_INST_PROP_BY_IDX(1, location_rx, 2), gpioModeInput, 1}
	#define PIN_LEUART_1_TXD {DT_INST_PROP_BY_IDX(1, location_tx, 1), \
	DT_INST_PROP_BY_IDX(1, location_tx, 2), gpioModePushPull, 1}

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static void leuart_gecko_config_func_1(const struct device *dev);
	#endif

	static const struct leuart_gecko_config leuart_gecko_1_config = {
	.base = (LEUART_TypeDef *)DT_INST_REG_ADDR(1),
	.clock = CLOCK_LEUART(DT_INST_PROP(1, peripheral_id)),
	.baud_rate = DT_INST_PROP(1, current_speed),
	.pin_rx = PIN_LEUART_1_RXD,
	.pin_tx = PIN_LEUART_1_TXD,
	#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
	.loc_rx = DT_INST_PROP_BY_IDX(1, location_rx, 0),
	.loc_tx = DT_INST_PROP_BY_IDX(1, location_tx, 0),
	#else
	#if DT_INST_PROP_BY_IDX(1, location_rx, 0) \
	!= DT_INST_PROP_BY_IDX(1, location_tx, 0)
	#error LEUART_1 DTS location-* properties must have identical value
	#endif
	.loc = DT_INST_PROP_BY_IDX(1, location_rx, 0),
	#endif
	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	.irq_config_func = leuart_gecko_config_func_1,
	#endif
	};

	static struct leuart_gecko_data leuart_gecko_1_data;

	DEVICE_DT_INST_DEFINE(1, &leuart_gecko_init,
	NULL, &leuart_gecko_1_data,
	&leuart_gecko_1_config, PRE_KERNEL_1,
	CONFIG_SERIAL_INIT_PRIORITY,
	&leuart_gecko_driver_api);

	#ifdef CONFIG_UART_INTERRUPT_DRIVEN
	static void leuart_gecko_config_func_1(const struct device *dev)
	{
	IRQ_CONNECT(DT_INST_IRQN(1),
	DT_INST_IRQ(1, priority),
	leuart_gecko_isr, DEVICE_DT_INST_GET(1), 0);

	irq_enable(DT_INST_IRQN(1));
	}
	#endif

	#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay) */