zephyr/drivers/serial/uart_mcux.c
Maureen Helm 5df8b5d63e drivers: serial: Refactor mcux uart driver to use generated dts macros
Refactors the mcux uart driver to use generated device tree macros
directly. Removes now unused dts fixup macros from kinetis socs.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
2020-01-15 18:02:19 -05:00

549 lines
15 KiB
C

/*
* Copyright (c) 2017, NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#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;
char *clock_name;
clock_control_subsys_t clock_subsys;
u32_t baud_rate;
u8_t hw_flow_control;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
void (*irq_config_func)(struct device *dev);
#endif
};
struct uart_mcux_data {
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
uart_irq_callback_user_data_t callback;
void *cb_data;
#endif
};
static int uart_mcux_poll_in(struct device *dev, unsigned char *c)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_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(struct device *dev, unsigned char c)
{
const struct uart_mcux_config *config = dev->config->config_info;
while (!(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {
}
UART_WriteByte(config->base, c);
}
static int uart_mcux_err_check(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_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(struct device *dev, const u8_t *tx_data,
int len)
{
const struct uart_mcux_config *config = dev->config->config_info;
u8_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(struct device *dev, u8_t *rx_data,
const int len)
{
const struct uart_mcux_config *config = dev->config->config_info;
u8_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(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
UART_EnableInterrupts(config->base, mask);
}
static void uart_mcux_irq_tx_disable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
UART_DisableInterrupts(config->base, mask);
}
static int uart_mcux_irq_tx_complete(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t flags = UART_GetStatusFlags(config->base);
return (flags & kUART_TxDataRegEmptyFlag) != 0U;
}
static int uart_mcux_irq_tx_ready(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_TxDataRegEmptyInterruptEnable;
return (UART_GetEnabledInterrupts(config->base) & mask)
&& uart_mcux_irq_tx_complete(dev);
}
static void uart_mcux_irq_rx_enable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_RxDataRegFullInterruptEnable;
UART_EnableInterrupts(config->base, mask);
}
static void uart_mcux_irq_rx_disable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_RxDataRegFullInterruptEnable;
UART_DisableInterrupts(config->base, mask);
}
static int uart_mcux_irq_rx_full(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t flags = UART_GetStatusFlags(config->base);
return (flags & kUART_RxDataRegFullFlag) != 0U;
}
static int uart_mcux_irq_rx_ready(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_RxDataRegFullInterruptEnable;
return (UART_GetEnabledInterrupts(config->base) & mask)
&& uart_mcux_irq_rx_full(dev);
}
static void uart_mcux_irq_err_enable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_NoiseErrorInterruptEnable |
kUART_FramingErrorInterruptEnable |
kUART_ParityErrorInterruptEnable;
UART_EnableInterrupts(config->base, mask);
}
static void uart_mcux_irq_err_disable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_NoiseErrorInterruptEnable |
kUART_FramingErrorInterruptEnable |
kUART_ParityErrorInterruptEnable;
UART_DisableInterrupts(config->base, mask);
}
static int uart_mcux_irq_is_pending(struct device *dev)
{
return uart_mcux_irq_tx_ready(dev) || uart_mcux_irq_rx_ready(dev);
}
static int uart_mcux_irq_update(struct device *dev)
{
return 1;
}
static void uart_mcux_irq_callback_set(struct device *dev,
uart_irq_callback_user_data_t cb,
void *cb_data)
{
struct uart_mcux_data *data = dev->driver_data;
data->callback = cb;
data->cb_data = cb_data;
}
static void uart_mcux_isr(void *arg)
{
struct device *dev = arg;
struct uart_mcux_data *data = dev->driver_data;
if (data->callback) {
data->callback(data->cb_data);
}
}
#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
static int uart_mcux_init(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
uart_config_t uart_config;
struct device *clock_dev;
u32_t clock_freq;
clock_dev = device_get_binding(config->clock_name);
if (clock_dev == NULL) {
return -EINVAL;
}
if (clock_control_get_rate(clock_dev, config->clock_subsys,
&clock_freq)) {
return -EINVAL;
}
UART_GetDefaultConfig(&uart_config);
uart_config.enableTx = true;
uart_config.enableRx = true;
if (config->hw_flow_control) {
uart_config.enableRxRTS = true;
uart_config.enableTxCTS = true;
}
uart_config.baudRate_Bps = config->baud_rate;
UART_Init(config->base, &uart_config, clock_freq);
#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,
#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_ready,
.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
};
#ifdef CONFIG_UART_MCUX_0
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_0(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_0_config = {
.base = UART0,
.clock_name = DT_NXP_KINETIS_UART_UART_0_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_0_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_0_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_0_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_0,
#endif
};
static struct uart_mcux_data uart_mcux_0_data;
DEVICE_AND_API_INIT(uart_0, DT_NXP_KINETIS_UART_UART_0_LABEL,
&uart_mcux_init,
&uart_mcux_0_data, &uart_mcux_0_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_0(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_0_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_0_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_0), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_0_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_0_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_0_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_0), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_0_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_0 */
#ifdef CONFIG_UART_MCUX_1
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_1(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_1_config = {
.base = UART1,
.clock_name = DT_NXP_KINETIS_UART_UART_1_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_1_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_1_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_1_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_1,
#endif
};
static struct uart_mcux_data uart_mcux_1_data;
DEVICE_AND_API_INIT(uart_1, DT_NXP_KINETIS_UART_UART_1_LABEL,
&uart_mcux_init,
&uart_mcux_1_data, &uart_mcux_1_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_1(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_1_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_1_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_1), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_1_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_1_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_1_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_1), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_1_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_1 */
#ifdef CONFIG_UART_MCUX_2
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_2(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_2_config = {
.base = UART2,
.clock_name = DT_NXP_KINETIS_UART_UART_2_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_2_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_2_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_2_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_2,
#endif
};
static struct uart_mcux_data uart_mcux_2_data;
DEVICE_AND_API_INIT(uart_2, DT_NXP_KINETIS_UART_UART_2_LABEL,
&uart_mcux_init,
&uart_mcux_2_data, &uart_mcux_2_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_2(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_2_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_2_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_2), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_2_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_2_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_2_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_2), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_2_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_2 */
#ifdef CONFIG_UART_MCUX_3
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_3(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_3_config = {
.base = UART3,
.clock_name = DT_NXP_KINETIS_UART_UART_3_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_3_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_3_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_3_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_3,
#endif
};
static struct uart_mcux_data uart_mcux_3_data;
DEVICE_AND_API_INIT(uart_3, DT_NXP_KINETIS_UART_UART_3_LABEL,
&uart_mcux_init,
&uart_mcux_3_data, &uart_mcux_3_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_3(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_3_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_3_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_3), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_3_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_3_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_3_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_3), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_3_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_3 */
#ifdef CONFIG_UART_MCUX_4
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_4(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_4_config = {
.base = UART4,
.clock_name = DT_NXP_KINETIS_UART_UART_4_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_4_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_4_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_4_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_4,
#endif
};
static struct uart_mcux_data uart_mcux_4_data;
DEVICE_AND_API_INIT(uart_4, DT_NXP_KINETIS_UART_UART_4_LABEL,
&uart_mcux_init,
&uart_mcux_4_data, &uart_mcux_4_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_4(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_4_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_4_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_4), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_4_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_4_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_4_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_4), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_4_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_4 */
#ifdef CONFIG_UART_MCUX_5
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_5(struct device *dev);
#endif
static const struct uart_mcux_config uart_mcux_5_config = {
.base = UART5,
.clock_name = DT_NXP_KINETIS_UART_UART_5_CLOCK_CONTROLLER,
.clock_subsys = (clock_control_subsys_t)DT_NXP_KINETIS_UART_UART_5_CLOCK_NAME,
.baud_rate = DT_NXP_KINETIS_UART_UART_5_CURRENT_SPEED,
.hw_flow_control = DT_NXP_KINETIS_UART_UART_5_HW_FLOW_CONTROL,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_mcux_config_func_5,
#endif
};
static struct uart_mcux_data uart_mcux_5_data;
DEVICE_AND_API_INIT(uart_5, DT_NXP_KINETIS_UART_UART_5_LABEL,
&uart_mcux_init,
&uart_mcux_5_data, &uart_mcux_5_config,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_mcux_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_mcux_config_func_5(struct device *dev)
{
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_5_IRQ_STATUS,
DT_NXP_KINETIS_UART_UART_5_IRQ_STATUS_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_5), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_5_IRQ_STATUS);
IRQ_CONNECT(DT_NXP_KINETIS_UART_UART_5_IRQ_ERROR,
DT_NXP_KINETIS_UART_UART_5_IRQ_ERROR_PRIORITY,
uart_mcux_isr, DEVICE_GET(uart_5), 0);
irq_enable(DT_NXP_KINETIS_UART_UART_5_IRQ_ERROR);
}
#endif
#endif /* CONFIG_UART_MCUX_5 */