a2082303b8
Refactors the mcux lpuart driver to use generated device tree macros directly. Removes now unused dts fixup macros from i.mx rt and kinetis socs. Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
514 lines
14 KiB
C
514 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 <soc.h>
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#include <fsl_lpuart.h>
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#include <device.h>
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#include <drivers/uart.h>
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#include <drivers/clock_control.h>
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struct mcux_lpuart_config {
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LPUART_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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#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 mcux_lpuart_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 mcux_lpuart_poll_in(struct device *dev, unsigned char *c)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t flags = LPUART_GetStatusFlags(config->base);
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int ret = -1;
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if (flags & kLPUART_RxDataRegFullFlag) {
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*c = LPUART_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 mcux_lpuart_poll_out(struct device *dev, unsigned char c)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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while (!(LPUART_GetStatusFlags(config->base)
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& kLPUART_TxDataRegEmptyFlag)) {
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}
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LPUART_WriteByte(config->base, c);
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}
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static int mcux_lpuart_err_check(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t flags = LPUART_GetStatusFlags(config->base);
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int err = 0;
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if (flags & kLPUART_RxOverrunFlag) {
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err |= UART_ERROR_OVERRUN;
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}
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if (flags & kLPUART_ParityErrorFlag) {
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err |= UART_ERROR_PARITY;
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}
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if (flags & kLPUART_FramingErrorFlag) {
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err |= UART_ERROR_FRAMING;
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}
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LPUART_ClearStatusFlags(config->base, kLPUART_RxOverrunFlag |
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kLPUART_ParityErrorFlag |
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kLPUART_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 mcux_lpuart_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 mcux_lpuart_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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(LPUART_GetStatusFlags(config->base)
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& kLPUART_TxDataRegEmptyFlag)) {
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LPUART_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 mcux_lpuart_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 mcux_lpuart_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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(LPUART_GetStatusFlags(config->base)
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& kLPUART_RxDataRegFullFlag)) {
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rx_data[num_rx++] = LPUART_ReadByte(config->base);
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}
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return num_rx;
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}
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static void mcux_lpuart_irq_tx_enable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_TxDataRegEmptyInterruptEnable;
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LPUART_EnableInterrupts(config->base, mask);
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}
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static void mcux_lpuart_irq_tx_disable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_TxDataRegEmptyInterruptEnable;
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LPUART_DisableInterrupts(config->base, mask);
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}
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static int mcux_lpuart_irq_tx_complete(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t flags = LPUART_GetStatusFlags(config->base);
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return (flags & kLPUART_TxDataRegEmptyFlag) != 0U;
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}
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static int mcux_lpuart_irq_tx_ready(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_TxDataRegEmptyInterruptEnable;
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return (LPUART_GetEnabledInterrupts(config->base) & mask)
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&& mcux_lpuart_irq_tx_complete(dev);
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}
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static void mcux_lpuart_irq_rx_enable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_RxDataRegFullInterruptEnable;
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LPUART_EnableInterrupts(config->base, mask);
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}
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static void mcux_lpuart_irq_rx_disable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_RxDataRegFullInterruptEnable;
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LPUART_DisableInterrupts(config->base, mask);
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}
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static int mcux_lpuart_irq_rx_full(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t flags = LPUART_GetStatusFlags(config->base);
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return (flags & kLPUART_RxDataRegFullFlag) != 0U;
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}
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static int mcux_lpuart_irq_rx_ready(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_RxDataRegFullInterruptEnable;
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return (LPUART_GetEnabledInterrupts(config->base) & mask)
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&& mcux_lpuart_irq_rx_full(dev);
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}
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static void mcux_lpuart_irq_err_enable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_NoiseErrorInterruptEnable |
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kLPUART_FramingErrorInterruptEnable |
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kLPUART_ParityErrorInterruptEnable;
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LPUART_EnableInterrupts(config->base, mask);
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}
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static void mcux_lpuart_irq_err_disable(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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u32_t mask = kLPUART_NoiseErrorInterruptEnable |
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kLPUART_FramingErrorInterruptEnable |
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kLPUART_ParityErrorInterruptEnable;
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LPUART_DisableInterrupts(config->base, mask);
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}
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static int mcux_lpuart_irq_is_pending(struct device *dev)
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{
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return (mcux_lpuart_irq_tx_ready(dev)
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|| mcux_lpuart_irq_rx_ready(dev));
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}
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static int mcux_lpuart_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 mcux_lpuart_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 mcux_lpuart_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 mcux_lpuart_isr(void *arg)
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{
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struct device *dev = arg;
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struct mcux_lpuart_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 mcux_lpuart_init(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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lpuart_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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LPUART_GetDefaultConfig(&uart_config);
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uart_config.enableTx = true;
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uart_config.enableRx = true;
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uart_config.baudRate_Bps = config->baud_rate;
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LPUART_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 mcux_lpuart_driver_api = {
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.poll_in = mcux_lpuart_poll_in,
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.poll_out = mcux_lpuart_poll_out,
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.err_check = mcux_lpuart_err_check,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.fifo_fill = mcux_lpuart_fifo_fill,
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.fifo_read = mcux_lpuart_fifo_read,
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.irq_tx_enable = mcux_lpuart_irq_tx_enable,
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.irq_tx_disable = mcux_lpuart_irq_tx_disable,
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.irq_tx_complete = mcux_lpuart_irq_tx_complete,
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.irq_tx_ready = mcux_lpuart_irq_tx_ready,
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.irq_rx_enable = mcux_lpuart_irq_rx_enable,
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.irq_rx_disable = mcux_lpuart_irq_rx_disable,
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.irq_rx_ready = mcux_lpuart_irq_rx_ready,
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.irq_err_enable = mcux_lpuart_irq_err_enable,
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.irq_err_disable = mcux_lpuart_irq_err_disable,
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.irq_is_pending = mcux_lpuart_irq_is_pending,
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.irq_update = mcux_lpuart_irq_update,
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.irq_callback_set = mcux_lpuart_irq_callback_set,
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#endif
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};
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#ifdef CONFIG_UART_MCUX_LPUART_0
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_0(struct device *dev);
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#endif
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static const struct mcux_lpuart_config mcux_lpuart_0_config = {
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.base = (LPUART_Type *) DT_NXP_KINETIS_LPUART_UART_0_BASE_ADDRESS,
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.clock_name = DT_NXP_KINETIS_LPUART_UART_0_CLOCK_CONTROLLER,
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.clock_subsys =
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(clock_control_subsys_t)DT_NXP_KINETIS_LPUART_UART_0_CLOCK_NAME,
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.baud_rate = DT_NXP_KINETIS_LPUART_UART_0_CURRENT_SPEED,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = mcux_lpuart_config_func_0,
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#endif
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};
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static struct mcux_lpuart_data mcux_lpuart_0_data;
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DEVICE_AND_API_INIT(uart_0, DT_NXP_KINETIS_LPUART_UART_0_LABEL,
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&mcux_lpuart_init,
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&mcux_lpuart_0_data, &mcux_lpuart_0_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&mcux_lpuart_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_0(struct device *dev)
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{
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_0_IRQ_0,
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DT_NXP_KINETIS_LPUART_UART_0_IRQ_0_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_0), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_0_IRQ_0);
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#ifdef DT_NXP_KINETIS_LPUART_UART_0_IRQ_1
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_0_IRQ_1,
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DT_NXP_KINETIS_LPUART_UART_0_IRQ_1_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_0), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_0_IRQ_1);
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#endif /* DT_NXP_KINETIS_LPUART_UART_0_IRQ_1 */
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}
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#endif
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#endif /* CONFIG_UART_MCUX_LPUART_0 */
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#ifdef CONFIG_UART_MCUX_LPUART_1
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_1(struct device *dev);
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#endif
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static const struct mcux_lpuart_config mcux_lpuart_1_config = {
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.base = (LPUART_Type *) DT_NXP_KINETIS_LPUART_UART_1_BASE_ADDRESS,
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.clock_name = DT_NXP_KINETIS_LPUART_UART_1_CLOCK_CONTROLLER,
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.clock_subsys =
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(clock_control_subsys_t)DT_NXP_KINETIS_LPUART_UART_1_CLOCK_NAME,
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.baud_rate = DT_NXP_KINETIS_LPUART_UART_1_CURRENT_SPEED,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = mcux_lpuart_config_func_1,
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#endif
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};
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static struct mcux_lpuart_data mcux_lpuart_1_data;
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DEVICE_AND_API_INIT(uart_1, DT_NXP_KINETIS_LPUART_UART_1_LABEL,
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&mcux_lpuart_init,
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&mcux_lpuart_1_data, &mcux_lpuart_1_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&mcux_lpuart_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_1(struct device *dev)
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{
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_1_IRQ_0,
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DT_NXP_KINETIS_LPUART_UART_1_IRQ_0_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_1), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_1_IRQ_0);
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#ifdef DT_NXP_KINETIS_LPUART_UART_1_IRQ_1
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_1_IRQ_1,
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DT_NXP_KINETIS_LPUART_UART_1_IRQ_1_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_1), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_1_IRQ_1);
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#endif /* DT_NXP_KINETIS_LPUART_UART_1_IRQ_1 */
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}
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#endif
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#endif /* CONFIG_UART_MCUX_LPUART_1 */
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#ifdef CONFIG_UART_MCUX_LPUART_2
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_2(struct device *dev);
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#endif
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static const struct mcux_lpuart_config mcux_lpuart_2_config = {
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.base = (LPUART_Type *) DT_NXP_KINETIS_LPUART_UART_2_BASE_ADDRESS,
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.clock_name = DT_NXP_KINETIS_LPUART_UART_2_CLOCK_CONTROLLER,
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.clock_subsys =
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(clock_control_subsys_t)DT_NXP_KINETIS_LPUART_UART_2_CLOCK_NAME,
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.baud_rate = DT_NXP_KINETIS_LPUART_UART_2_CURRENT_SPEED,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = mcux_lpuart_config_func_2,
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#endif
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};
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static struct mcux_lpuart_data mcux_lpuart_2_data;
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DEVICE_AND_API_INIT(uart_2, DT_NXP_KINETIS_LPUART_UART_2_LABEL,
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&mcux_lpuart_init,
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&mcux_lpuart_2_data, &mcux_lpuart_2_config,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
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&mcux_lpuart_driver_api);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_2(struct device *dev)
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{
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_2_IRQ_0,
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DT_NXP_KINETIS_LPUART_UART_2_IRQ_0_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_2), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_2_IRQ_0);
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#ifdef DT_NXP_KINETIS_LPUART_UART_2_IRQ_1
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IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_2_IRQ_1,
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DT_NXP_KINETIS_LPUART_UART_2_IRQ_1_PRIORITY,
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mcux_lpuart_isr, DEVICE_GET(uart_2), 0);
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irq_enable(DT_NXP_KINETIS_LPUART_UART_2_IRQ_1);
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#endif /* DT_NXP_KINETIS_LPUART_UART_2_IRQ_1 */
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}
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#endif
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#endif /* CONFIG_UART_MCUX_LPUART_2 */
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#ifdef CONFIG_UART_MCUX_LPUART_3
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static void mcux_lpuart_config_func_3(struct device *dev);
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#endif
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static const struct mcux_lpuart_config mcux_lpuart_3_config = {
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.base = (LPUART_Type *) DT_NXP_KINETIS_LPUART_UART_3_BASE_ADDRESS,
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.clock_name = DT_NXP_KINETIS_LPUART_UART_3_CLOCK_CONTROLLER,
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.clock_subsys =
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(clock_control_subsys_t)DT_NXP_KINETIS_LPUART_UART_3_CLOCK_NAME,
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.baud_rate = DT_NXP_KINETIS_LPUART_UART_3_CURRENT_SPEED,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = mcux_lpuart_config_func_3,
|
|
#endif
|
|
};
|
|
|
|
static struct mcux_lpuart_data mcux_lpuart_3_data;
|
|
|
|
DEVICE_AND_API_INIT(uart_3, DT_NXP_KINETIS_LPUART_UART_3_LABEL,
|
|
&mcux_lpuart_init,
|
|
&mcux_lpuart_3_data, &mcux_lpuart_3_config,
|
|
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
|
|
&mcux_lpuart_driver_api);
|
|
|
|
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
|
|
static void mcux_lpuart_config_func_3(struct device *dev)
|
|
{
|
|
IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_3_IRQ_0,
|
|
DT_NXP_KINETIS_LPUART_UART_3_IRQ_0_PRIORITY,
|
|
mcux_lpuart_isr, DEVICE_GET(uart_3), 0);
|
|
|
|
irq_enable(DT_NXP_KINETIS_LPUART_UART_3_IRQ_0);
|
|
|
|
#ifdef DT_NXP_KINETIS_LPUART_UART_3_IRQ_1
|
|
IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_3_IRQ_1,
|
|
DT_NXP_KINETIS_LPUART_UART_3_IRQ_1_PRIORITY,
|
|
mcux_lpuart_isr, DEVICE_GET(uart_3), 0);
|
|
|
|
irq_enable(DT_NXP_KINETIS_LPUART_UART_3_IRQ_1);
|
|
#endif /* DT_NXP_KINETIS_LPUART_UART_3_IRQ_1 */
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_UART_MCUX_LPUART_3 */
|
|
|
|
#ifdef CONFIG_UART_MCUX_LPUART_4
|
|
|
|
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
|
|
static void mcux_lpuart_config_func_4(struct device *dev);
|
|
#endif
|
|
|
|
static const struct mcux_lpuart_config mcux_lpuart_4_config = {
|
|
.base = (LPUART_Type *) DT_NXP_KINETIS_LPUART_UART_4_BASE_ADDRESS,
|
|
.clock_name = DT_NXP_KINETIS_LPUART_UART_4_CLOCK_CONTROLLER,
|
|
.clock_subsys =
|
|
(clock_control_subsys_t)DT_NXP_KINETIS_LPUART_UART_4_CLOCK_NAME,
|
|
.baud_rate = DT_NXP_KINETIS_LPUART_UART_4_CURRENT_SPEED,
|
|
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
|
|
.irq_config_func = mcux_lpuart_config_func_4,
|
|
#endif
|
|
};
|
|
|
|
static struct mcux_lpuart_data mcux_lpuart_4_data;
|
|
|
|
DEVICE_AND_API_INIT(uart_4, DT_NXP_KINETIS_LPUART_UART_4_LABEL,
|
|
&mcux_lpuart_init,
|
|
&mcux_lpuart_4_data, &mcux_lpuart_4_config,
|
|
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
|
|
&mcux_lpuart_driver_api);
|
|
|
|
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
|
|
static void mcux_lpuart_config_func_4(struct device *dev)
|
|
{
|
|
IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_4_IRQ_0,
|
|
DT_NXP_KINETIS_LPUART_UART_4_IRQ_0_PRIORITY,
|
|
mcux_lpuart_isr, DEVICE_GET(uart_4), 0);
|
|
|
|
irq_enable(DT_NXP_KINETIS_LPUART_UART_4_IRQ_0);
|
|
|
|
#ifdef DT_NXP_KINETIS_LPUART_UART_4_IRQ_1
|
|
IRQ_CONNECT(DT_NXP_KINETIS_LPUART_UART_4_IRQ_1,
|
|
DT_NXP_KINETIS_LPUART_UART_4_IRQ_1_PRIORITY,
|
|
mcux_lpuart_isr, DEVICE_GET(uart_4), 0);
|
|
|
|
irq_enable(DT_NXP_KINETIS_LPUART_UART_4_IRQ_1);
|
|
#endif /* DT_NXP_KINETIS_LPUART_UART_4_IRQ_1 */
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_UART_MCUX_LPUART_4 */
|