549 lines
14 KiB
C
549 lines
14 KiB
C
/*
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* Copyright (c) 2017, NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <device.h>
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#include <uart.h>
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#include <clock_control.h>
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#include <fsl_uart.h>
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#include <soc.h>
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struct uart_mcux_config {
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UART_Type *base;
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char *clock_name;
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clock_control_subsys_t clock_subsys;
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u32_t baud_rate;
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u8_t hw_flow_control;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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void (*irq_config_func)(struct device *dev);
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#endif
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};
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struct uart_mcux_data {
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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uart_irq_callback_user_data_t callback;
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void *cb_data;
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#endif
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};
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static int uart_mcux_poll_in(struct device *dev, unsigned char *c)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t flags = UART_GetStatusFlags(config->base);
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int ret = -1;
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if (flags & kUART_RxDataRegFullFlag) {
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*c = UART_ReadByte(config->base);
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ret = 0;
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}
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return ret;
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}
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static void uart_mcux_poll_out(struct device *dev, unsigned char c)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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while (!(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag))
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;
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UART_WriteByte(config->base, c);
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}
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static int uart_mcux_err_check(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t flags = UART_GetStatusFlags(config->base);
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int err = 0;
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if (flags & kUART_RxOverrunFlag) {
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err |= UART_ERROR_OVERRUN;
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}
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if (flags & kUART_ParityErrorFlag) {
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err |= UART_ERROR_PARITY;
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}
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if (flags & kUART_FramingErrorFlag) {
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err |= UART_ERROR_FRAMING;
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}
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UART_ClearStatusFlags(config->base, kUART_RxOverrunFlag |
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kUART_ParityErrorFlag |
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kUART_FramingErrorFlag);
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return err;
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}
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static int uart_mcux_fifo_fill(struct device *dev, const u8_t *tx_data,
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int len)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u8_t num_tx = 0U;
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while ((len - num_tx > 0) &&
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(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {
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UART_WriteByte(config->base, tx_data[num_tx++]);
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}
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return num_tx;
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}
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static int uart_mcux_fifo_read(struct device *dev, u8_t *rx_data,
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const int len)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u8_t num_rx = 0U;
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while ((len - num_rx > 0) &&
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(UART_GetStatusFlags(config->base) & kUART_RxDataRegFullFlag)) {
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rx_data[num_rx++] = UART_ReadByte(config->base);
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}
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return num_rx;
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}
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static void uart_mcux_irq_tx_enable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
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UART_EnableInterrupts(config->base, mask);
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}
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static void uart_mcux_irq_tx_disable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
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UART_DisableInterrupts(config->base, mask);
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}
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static int uart_mcux_irq_tx_complete(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t flags = UART_GetStatusFlags(config->base);
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return (flags & kUART_TxDataRegEmptyFlag) != 0;
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}
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static int uart_mcux_irq_tx_ready(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
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return (UART_GetEnabledInterrupts(config->base) & mask)
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&& uart_mcux_irq_tx_complete(dev);
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}
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static void uart_mcux_irq_rx_enable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_RxDataRegFullInterruptEnable;
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UART_EnableInterrupts(config->base, mask);
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}
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static void uart_mcux_irq_rx_disable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_RxDataRegFullInterruptEnable;
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UART_DisableInterrupts(config->base, mask);
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}
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static int uart_mcux_irq_rx_full(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t flags = UART_GetStatusFlags(config->base);
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return (flags & kUART_RxDataRegFullFlag) != 0;
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}
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static int uart_mcux_irq_rx_ready(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_RxDataRegFullInterruptEnable;
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return (UART_GetEnabledInterrupts(config->base) & mask)
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&& uart_mcux_irq_rx_full(dev);
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}
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static void uart_mcux_irq_err_enable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_NoiseErrorInterruptEnable |
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kUART_FramingErrorInterruptEnable |
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kUART_ParityErrorInterruptEnable;
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UART_EnableInterrupts(config->base, mask);
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}
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static void uart_mcux_irq_err_disable(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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u32_t mask = kUART_NoiseErrorInterruptEnable |
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kUART_FramingErrorInterruptEnable |
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kUART_ParityErrorInterruptEnable;
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UART_DisableInterrupts(config->base, mask);
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}
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static int uart_mcux_irq_is_pending(struct device *dev)
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{
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return uart_mcux_irq_tx_ready(dev) || uart_mcux_irq_rx_ready(dev);
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}
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static int uart_mcux_irq_update(struct device *dev)
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{
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return 1;
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}
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static void uart_mcux_irq_callback_set(struct device *dev,
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uart_irq_callback_user_data_t cb,
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void *cb_data)
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{
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struct uart_mcux_data *data = dev->driver_data;
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data->callback = cb;
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data->cb_data = cb_data;
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}
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static void uart_mcux_isr(void *arg)
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{
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struct device *dev = arg;
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struct uart_mcux_data *data = dev->driver_data;
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if (data->callback) {
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data->callback(data->cb_data);
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}
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}
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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static int uart_mcux_init(struct device *dev)
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{
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const struct uart_mcux_config *config = dev->config->config_info;
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uart_config_t uart_config;
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struct device *clock_dev;
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u32_t clock_freq;
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clock_dev = device_get_binding(config->clock_name);
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if (clock_dev == NULL) {
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return -EINVAL;
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}
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if (clock_control_get_rate(clock_dev, config->clock_subsys,
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&clock_freq)) {
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return -EINVAL;
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}
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UART_GetDefaultConfig(&uart_config);
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uart_config.enableTx = true;
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uart_config.enableRx = true;
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if (config->hw_flow_control) {
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uart_config.enableRxRTS = true;
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uart_config.enableTxCTS = true;
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}
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uart_config.baudRate_Bps = config->baud_rate;
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UART_Init(config->base, &uart_config, clock_freq);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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config->irq_config_func(dev);
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#endif
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return 0;
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}
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static const struct uart_driver_api uart_mcux_driver_api = {
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.poll_in = uart_mcux_poll_in,
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.poll_out = uart_mcux_poll_out,
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.err_check = uart_mcux_err_check,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.fifo_fill = uart_mcux_fifo_fill,
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.fifo_read = uart_mcux_fifo_read,
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.irq_tx_enable = uart_mcux_irq_tx_enable,
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.irq_tx_disable = uart_mcux_irq_tx_disable,
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.irq_tx_complete = uart_mcux_irq_tx_complete,
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.irq_tx_ready = uart_mcux_irq_tx_ready,
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.irq_rx_enable = uart_mcux_irq_rx_enable,
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.irq_rx_disable = uart_mcux_irq_rx_disable,
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.irq_rx_ready = uart_mcux_irq_rx_ready,
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.irq_err_enable = uart_mcux_irq_err_enable,
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.irq_err_disable = uart_mcux_irq_err_disable,
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.irq_is_pending = uart_mcux_irq_is_pending,
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.irq_update = uart_mcux_irq_update,
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.irq_callback_set = uart_mcux_irq_callback_set,
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#endif
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};
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#ifdef CONFIG_UART_MCUX_0
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_0(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_0_config = {
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.base = UART0,
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.clock_name = DT_UART_MCUX_0_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_0_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_0_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_0_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_0,
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#endif
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};
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static struct uart_mcux_data uart_mcux_0_data;
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DEVICE_AND_API_INIT(uart_0, DT_UART_MCUX_0_NAME,
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&uart_mcux_init,
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&uart_mcux_0_data, &uart_mcux_0_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_0(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_0_IRQ_STATUS,
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DT_UART_MCUX_0_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_0), 0);
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irq_enable(DT_UART_MCUX_0_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_0_IRQ_ERROR,
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DT_UART_MCUX_0_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_0), 0);
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irq_enable(DT_UART_MCUX_0_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_0 */
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#ifdef CONFIG_UART_MCUX_1
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_1(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_1_config = {
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.base = UART1,
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.clock_name = DT_UART_MCUX_1_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_1_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_1_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_1_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_1,
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#endif
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};
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static struct uart_mcux_data uart_mcux_1_data;
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DEVICE_AND_API_INIT(uart_1, DT_UART_MCUX_1_NAME,
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&uart_mcux_init,
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&uart_mcux_1_data, &uart_mcux_1_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_1(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_1_IRQ_STATUS,
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DT_UART_MCUX_1_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_1), 0);
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irq_enable(DT_UART_MCUX_1_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_1_IRQ_ERROR,
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DT_UART_MCUX_1_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_1), 0);
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irq_enable(DT_UART_MCUX_1_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_1 */
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#ifdef CONFIG_UART_MCUX_2
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_2(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_2_config = {
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.base = UART2,
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.clock_name = DT_UART_MCUX_2_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_2_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_2_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_2_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_2,
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#endif
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};
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static struct uart_mcux_data uart_mcux_2_data;
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DEVICE_AND_API_INIT(uart_2, DT_UART_MCUX_2_NAME,
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&uart_mcux_init,
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&uart_mcux_2_data, &uart_mcux_2_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_2(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_2_IRQ_STATUS,
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DT_UART_MCUX_2_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_2), 0);
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irq_enable(DT_UART_MCUX_2_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_2_IRQ_ERROR,
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DT_UART_MCUX_2_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_2), 0);
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irq_enable(DT_UART_MCUX_2_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_2 */
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#ifdef CONFIG_UART_MCUX_3
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_3(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_3_config = {
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.base = UART3,
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.clock_name = DT_UART_MCUX_3_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_3_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_3_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_3_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_3,
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#endif
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};
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static struct uart_mcux_data uart_mcux_3_data;
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DEVICE_AND_API_INIT(uart_3, DT_UART_MCUX_3_NAME,
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&uart_mcux_init,
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&uart_mcux_3_data, &uart_mcux_3_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_3(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_3_IRQ_STATUS,
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DT_UART_MCUX_3_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_3), 0);
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irq_enable(DT_UART_MCUX_3_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_3_IRQ_ERROR,
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DT_UART_MCUX_3_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_3), 0);
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irq_enable(DT_UART_MCUX_3_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_3 */
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#ifdef CONFIG_UART_MCUX_4
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_4(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_4_config = {
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.base = UART4,
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.clock_name = DT_UART_MCUX_4_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_4_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_4_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_4_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_4,
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#endif
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};
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static struct uart_mcux_data uart_mcux_4_data;
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DEVICE_AND_API_INIT(uart_4, DT_UART_MCUX_4_NAME,
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&uart_mcux_init,
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&uart_mcux_4_data, &uart_mcux_4_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_4(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_4_IRQ_STATUS,
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DT_UART_MCUX_4_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_4), 0);
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irq_enable(DT_UART_MCUX_4_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_4_IRQ_ERROR,
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DT_UART_MCUX_4_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_4), 0);
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irq_enable(DT_UART_MCUX_4_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_4 */
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#ifdef CONFIG_UART_MCUX_5
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_5(struct device *dev);
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#endif
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static const struct uart_mcux_config uart_mcux_5_config = {
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.base = UART5,
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.clock_name = DT_UART_MCUX_5_CLOCK_NAME,
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.clock_subsys = (clock_control_subsys_t)DT_UART_MCUX_5_CLOCK_SUBSYS,
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.baud_rate = DT_UART_MCUX_5_BAUD_RATE,
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.hw_flow_control = DT_UART_MCUX_5_HW_FLOW_CONTROL,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = uart_mcux_config_func_5,
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#endif
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};
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static struct uart_mcux_data uart_mcux_5_data;
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DEVICE_AND_API_INIT(uart_5, DT_UART_MCUX_5_NAME,
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&uart_mcux_init,
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&uart_mcux_5_data, &uart_mcux_5_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&uart_mcux_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void uart_mcux_config_func_5(struct device *dev)
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{
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IRQ_CONNECT(DT_UART_MCUX_5_IRQ_STATUS,
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DT_UART_MCUX_5_IRQ_STATUS_PRI,
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uart_mcux_isr, DEVICE_GET(uart_5), 0);
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irq_enable(DT_UART_MCUX_5_IRQ_STATUS);
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IRQ_CONNECT(DT_UART_MCUX_5_IRQ_ERROR,
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DT_UART_MCUX_5_IRQ_ERROR_PRI,
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uart_mcux_isr, DEVICE_GET(uart_5), 0);
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irq_enable(DT_UART_MCUX_5_IRQ_ERROR);
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}
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#endif
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#endif /* CONFIG_UART_MCUX_5 */
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