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zephyr/drivers/serial/uart_cmsdk_apb.c

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/*
* Copyright (c) 2016 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT arm_cmsdk_uart
/**
* @brief Driver for UART on ARM CMSDK APB UART.
*
* UART has two wires for RX and TX, and does not provide CTS or RTS.
*/
#include <kernel.h>
#include <arch/cpu.h>
#include <drivers/clock_control/arm_clock_control.h>
#include <sys/__assert.h>
#include <init.h>
#include <drivers/uart.h>
#include <linker/sections.h>
/* UART registers struct */
struct uart_cmsdk_apb {
/* offset: 0x000 (r/w) data register */
volatile uint32_t data;
/* offset: 0x004 (r/w) status register */
volatile uint32_t state;
/* offset: 0x008 (r/w) control register */
volatile uint32_t ctrl;
union {
/* offset: 0x00c (r/ ) interrupt status register */
volatile uint32_t intstatus;
/* offset: 0x00c ( /w) interrupt clear register */
volatile uint32_t intclear;
};
/* offset: 0x010 (r/w) baudrate divider register */
volatile uint32_t bauddiv;
};
/* UART Bits */
/* CTRL Register */
#define UART_TX_EN (1 << 0)
#define UART_RX_EN (1 << 1)
#define UART_TX_IN_EN (1 << 2)
#define UART_RX_IN_EN (1 << 3)
#define UART_TX_OV_EN (1 << 4)
#define UART_RX_OV_EN (1 << 5)
#define UART_HS_TM_TX (1 << 6)
/* STATE Register */
#define UART_TX_BF (1 << 0)
#define UART_RX_BF (1 << 1)
#define UART_TX_B_OV (1 << 2)
#define UART_RX_B_OV (1 << 3)
/* INTSTATUS Register */
#define UART_TX_IN (1 << 0)
#define UART_RX_IN (1 << 1)
#define UART_TX_OV_IN (1 << 2)
#define UART_RX_OV_IN (1 << 3)
/* Device data structure */
struct uart_cmsdk_apb_dev_data {
uint32_t baud_rate; /* Baud rate */
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
uart_irq_callback_user_data_t irq_cb;
void *irq_cb_data;
#endif
/* UART Clock control in Active State */
const struct arm_clock_control_t uart_cc_as;
/* UART Clock control in Sleep State */
const struct arm_clock_control_t uart_cc_ss;
/* UART Clock control in Deep Sleep State */
const struct arm_clock_control_t uart_cc_dss;
};
/* convenience defines */
#define DEV_CFG(dev) \
((const struct uart_device_config * const)(dev)->config_info)
#define DEV_DATA(dev) \
((struct uart_cmsdk_apb_dev_data * const)(dev)->driver_data)
#define UART_STRUCT(dev) \
((volatile struct uart_cmsdk_apb *)(DEV_CFG(dev))->base)
static const struct uart_driver_api uart_cmsdk_apb_driver_api;
static void uart_cmsdk_apb_isr(void *arg);
/**
* @brief Set the baud rate
*
* This routine set the given baud rate for the UART.
*
* @param dev UART device struct
*
* @return N/A
*/
static void baudrate_set(struct device *dev)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
const struct uart_device_config * const dev_cfg = DEV_CFG(dev);
struct uart_cmsdk_apb_dev_data *const dev_data = DEV_DATA(dev);
/*
* If baudrate and/or sys_clk_freq are 0 the configuration remains
* unchanged. It can be useful in case that Zephyr it is run via
* a bootloader that brings up the serial and sets the baudrate.
*/
if ((dev_data->baud_rate != 0U) && (dev_cfg->sys_clk_freq != 0U)) {
/* calculate baud rate divisor */
uart->bauddiv = (dev_cfg->sys_clk_freq / dev_data->baud_rate);
}
}
/**
* @brief Initialize UART channel
*
* This routine is called to reset the chip in a quiescent state.
* It is assumed that this function is called only once per UART.
*
* @param dev UART device struct
*
* @return 0
*/
static int uart_cmsdk_apb_init(struct device *dev)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
const struct uart_device_config * const dev_cfg = DEV_CFG(dev);
#endif
#ifdef CONFIG_CLOCK_CONTROL
/* Enable clock for subsystem */
struct device *clk =
device_get_binding(CONFIG_ARM_CLOCK_CONTROL_DEV_NAME);
struct uart_cmsdk_apb_dev_data * const data = DEV_DATA(dev);
#ifdef CONFIG_SOC_SERIES_BEETLE
clock_control_on(clk, (clock_control_subsys_t *) &data->uart_cc_as);
clock_control_on(clk, (clock_control_subsys_t *) &data->uart_cc_ss);
clock_control_on(clk, (clock_control_subsys_t *) &data->uart_cc_dss);
#endif /* CONFIG_SOC_SERIES_BEETLE */
#endif /* CONFIG_CLOCK_CONTROL */
/* Set baud rate */
baudrate_set(dev);
/* Enable receiver and transmitter */
uart->ctrl = UART_RX_EN | UART_TX_EN;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
dev_cfg->irq_config_func(dev);
#endif
return 0;
}
/**
* @brief Poll the device for input.
*
* @param dev UART device struct
* @param c Pointer to character
*
* @return 0 if a character arrived, -1 if the input buffer if empty.
*/
static int uart_cmsdk_apb_poll_in(struct device *dev, unsigned char *c)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
/* If the receiver is not ready returns -1 */
if (!(uart->state & UART_RX_BF)) {
return -1;
}
/* got a character */
*c = (unsigned char)uart->data;
return 0;
}
/**
* @brief Output a character in polled mode.
*
* Checks if the transmitter is empty. If empty, a character is written to
* the data register.
*
* @param dev UART device struct
* @param c Character to send
*/
static void uart_cmsdk_apb_poll_out(struct device *dev,
unsigned char c)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
/* Wait for transmitter to be ready */
while (uart->state & UART_TX_BF) {
; /* Wait */
}
/* Send a character */
uart->data = (uint32_t)c;
}
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
/**
* @brief Fill FIFO with data
*
* @param dev UART device struct
* @param tx_data Data to transmit
* @param len Number of bytes to send
*
* @return the number of characters that have been read
*/
static int uart_cmsdk_apb_fifo_fill(struct device *dev,
const uint8_t *tx_data, int len)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
/* No hardware FIFO present */
if (len && !(uart->state & UART_TX_BF)) {
uart->data = *tx_data;
return 1;
}
return 0;
}
/**
* @brief Read data from FIFO
*
* @param dev UART device struct
* @param rx_data Pointer to data container
* @param size Container size in bytes
*
* @return the number of characters that have been read
*/
static int uart_cmsdk_apb_fifo_read(struct device *dev,
uint8_t *rx_data, const int size)
{
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
/* No hardware FIFO present */
if (size && uart->state & UART_RX_BF) {
*rx_data = (unsigned char)uart->data;
return 1;
}
return 0;
}
/**
* @brief Enable TX interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_tx_enable(struct device *dev)
{
unsigned int key;
UART_STRUCT(dev)->ctrl |= UART_TX_IN_EN;
/* The expectation is that TX is a level interrupt, active for as
* long as TX buffer is empty. But in CMSDK UART, it appears to be
* edge interrupt, firing on a state change of TX buffer. So, we
* need to "prime" it here by calling ISR directly, to get interrupt
* processing going.
*/
key = irq_lock();
uart_cmsdk_apb_isr(dev);
irq_unlock(key);
}
/**
* @brief Disable TX interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_tx_disable(struct device *dev)
{
UART_STRUCT(dev)->ctrl &= ~UART_TX_IN_EN;
}
/**
* @brief Verify if Tx interrupt has been raised
*
* @param dev UART device struct
*
* @return 1 if an interrupt is ready, 0 otherwise
*/
static int uart_cmsdk_apb_irq_tx_ready(struct device *dev)
{
return !(UART_STRUCT(dev)->state & UART_TX_BF);
}
/**
* @brief Enable RX interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_rx_enable(struct device *dev)
{
UART_STRUCT(dev)->ctrl |= UART_RX_IN_EN;
}
/**
* @brief Disable RX interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_rx_disable(struct device *dev)
{
UART_STRUCT(dev)->ctrl &= ~UART_RX_IN_EN;
}
/**
* @brief Verify if Tx complete interrupt has been raised
*
* @param dev UART device struct
*
* @return 1 if an interrupt is ready, 0 otherwise
*/
static int uart_cmsdk_apb_irq_tx_complete(struct device *dev)
{
return uart_cmsdk_apb_irq_tx_ready(dev);
}
/**
* @brief Verify if Rx interrupt has been raised
*
* @param dev UART device struct
*
* @return 1 if an interrupt is ready, 0 otherwise
*/
static int uart_cmsdk_apb_irq_rx_ready(struct device *dev)
{
return UART_STRUCT(dev)->state & UART_RX_BF;
}
/**
* @brief Enable error interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_err_enable(struct device *dev)
{
ARG_UNUSED(dev);
}
/**
* @brief Disable error interrupt
*
* @param dev UART device struct
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_err_disable(struct device *dev)
{
ARG_UNUSED(dev);
}
/**
* @brief Verify if Tx or Rx interrupt is pending
*
* @param dev UART device struct
*
* @return 1 if Tx or Rx interrupt is pending, 0 otherwise
*/
static int uart_cmsdk_apb_irq_is_pending(struct device *dev)
{
/* Return true if rx buffer full or tx buffer empty */
return (UART_STRUCT(dev)->state & (UART_RX_BF | UART_TX_BF))
!= UART_TX_BF;
}
/**
* @brief Update the interrupt status
*
* @param dev UART device struct
*
* @return always 1
*/
static int uart_cmsdk_apb_irq_update(struct device *dev)
{
return 1;
}
/**
* @brief Set the callback function pointer for an Interrupt.
*
* @param dev UART device structure
* @param cb Callback function pointer.
*
* @return N/A
*/
static void uart_cmsdk_apb_irq_callback_set(struct device *dev,
uart_irq_callback_user_data_t cb,
void *cb_data)
{
DEV_DATA(dev)->irq_cb = cb;
DEV_DATA(dev)->irq_cb_data = cb_data;
}
/**
* @brief Interrupt service routine.
*
* Calls the callback function, if exists.
*
* @param arg argument to interrupt service routine.
*
* @return N/A
*/
void uart_cmsdk_apb_isr(void *arg)
{
struct device *dev = arg;
volatile struct uart_cmsdk_apb *uart = UART_STRUCT(dev);
struct uart_cmsdk_apb_dev_data *data = DEV_DATA(dev);
/* Clear pending interrupts */
uart->intclear = UART_RX_IN | UART_TX_IN;
/* Verify if the callback has been registered */
if (data->irq_cb) {
data->irq_cb(data->irq_cb_data);
}
}
#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
static const struct uart_driver_api uart_cmsdk_apb_driver_api = {
.poll_in = uart_cmsdk_apb_poll_in,
.poll_out = uart_cmsdk_apb_poll_out,
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.fifo_fill = uart_cmsdk_apb_fifo_fill,
.fifo_read = uart_cmsdk_apb_fifo_read,
.irq_tx_enable = uart_cmsdk_apb_irq_tx_enable,
.irq_tx_disable = uart_cmsdk_apb_irq_tx_disable,
.irq_tx_ready = uart_cmsdk_apb_irq_tx_ready,
.irq_rx_enable = uart_cmsdk_apb_irq_rx_enable,
.irq_rx_disable = uart_cmsdk_apb_irq_rx_disable,
.irq_tx_complete = uart_cmsdk_apb_irq_tx_complete,
.irq_rx_ready = uart_cmsdk_apb_irq_rx_ready,
.irq_err_enable = uart_cmsdk_apb_irq_err_enable,
.irq_err_disable = uart_cmsdk_apb_irq_err_disable,
.irq_is_pending = uart_cmsdk_apb_irq_is_pending,
.irq_update = uart_cmsdk_apb_irq_update,
.irq_callback_set = uart_cmsdk_apb_irq_callback_set,
#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
};
#if DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay)
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_cmsdk_apb_irq_config_func_0(struct device *dev);
#endif
static const struct uart_device_config uart_cmsdk_apb_dev_cfg_0 = {
.base = (uint8_t *)DT_INST_REG_ADDR(0),
.sys_clk_freq = DT_INST_PROP_BY_PHANDLE(0, clocks, clock_frequency),
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_cmsdk_apb_irq_config_func_0,
#endif
};
static struct uart_cmsdk_apb_dev_data uart_cmsdk_apb_dev_data_0 = {
.baud_rate = DT_INST_PROP(0, current_speed),
.uart_cc_as = {.bus = CMSDK_APB, .state = SOC_ACTIVE,
.device = DT_INST_REG_ADDR(0),},
.uart_cc_ss = {.bus = CMSDK_APB, .state = SOC_SLEEP,
.device = DT_INST_REG_ADDR(0),},
.uart_cc_dss = {.bus = CMSDK_APB, .state = SOC_DEEPSLEEP,
.device = DT_INST_REG_ADDR(0),},
};
DEVICE_AND_API_INIT(uart_cmsdk_apb_0,
DT_INST_LABEL(0),
&uart_cmsdk_apb_init,
&uart_cmsdk_apb_dev_data_0,
&uart_cmsdk_apb_dev_cfg_0, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_cmsdk_apb_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
#if DT_INST_IRQ_HAS_CELL(0, irq)
static void uart_cmsdk_apb_irq_config_func_0(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQN(0),
DT_INST_IRQ(0, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_0),
0);
irq_enable(DT_INST_IRQN(0));
}
#else
static void uart_cmsdk_apb_irq_config_func_0(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, tx, irq),
DT_INST_IRQ_BY_NAME(0, tx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_0),
0);
irq_enable(DT_INST_IRQ_BY_NAME(0, tx, irq));
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, rx, irq),
DT_INST_IRQ_BY_NAME(0, rx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_0),
0);
irq_enable(DT_INST_IRQ_BY_NAME(0, rx, irq));
}
#endif
#endif
#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay) */
#if DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay)
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_cmsdk_apb_irq_config_func_1(struct device *dev);
#endif
static const struct uart_device_config uart_cmsdk_apb_dev_cfg_1 = {
.base = (uint8_t *)DT_INST_REG_ADDR(1),
.sys_clk_freq = DT_INST_PROP_BY_PHANDLE(1, clocks, clock_frequency),
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_cmsdk_apb_irq_config_func_1,
#endif
};
static struct uart_cmsdk_apb_dev_data uart_cmsdk_apb_dev_data_1 = {
.baud_rate = DT_INST_PROP(1, current_speed),
.uart_cc_as = {.bus = CMSDK_APB, .state = SOC_ACTIVE,
.device = DT_INST_REG_ADDR(1),},
.uart_cc_ss = {.bus = CMSDK_APB, .state = SOC_SLEEP,
.device = DT_INST_REG_ADDR(1),},
.uart_cc_dss = {.bus = CMSDK_APB, .state = SOC_DEEPSLEEP,
.device = DT_INST_REG_ADDR(1),},
};
DEVICE_AND_API_INIT(uart_cmsdk_apb_1,
DT_INST_LABEL(1),
&uart_cmsdk_apb_init,
&uart_cmsdk_apb_dev_data_1,
&uart_cmsdk_apb_dev_cfg_1, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_cmsdk_apb_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
#if DT_INST_IRQ_HAS_CELL(1, irq)
static void uart_cmsdk_apb_irq_config_func_1(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQN(1),
DT_INST_IRQ(1, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_1),
0);
irq_enable(DT_INST_IRQN(1));
}
#else
static void uart_cmsdk_apb_irq_config_func_1(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(1, tx, irq),
DT_INST_IRQ_BY_NAME(1, tx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_1),
0);
irq_enable(DT_INST_IRQ_BY_NAME(1, tx, irq));
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(1, rx, irq),
DT_INST_IRQ_BY_NAME(1, rx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_1),
0);
irq_enable(DT_INST_IRQ_BY_NAME(1, rx, irq));
}
#endif
#endif
#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(1), okay) */
#if DT_NODE_HAS_STATUS(DT_DRV_INST(2), okay)
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_cmsdk_apb_irq_config_func_2(struct device *dev);
#endif
static const struct uart_device_config uart_cmsdk_apb_dev_cfg_2 = {
.base = (uint8_t *)DT_INST_REG_ADDR(2),
.sys_clk_freq = DT_INST_PROP_BY_PHANDLE(2, clocks, clock_frequency),
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_cmsdk_apb_irq_config_func_2,
#endif
};
static struct uart_cmsdk_apb_dev_data uart_cmsdk_apb_dev_data_2 = {
.baud_rate = DT_INST_PROP(2, current_speed),
.uart_cc_as = {.bus = CMSDK_APB, .state = SOC_ACTIVE,
.device = DT_INST_REG_ADDR(2),},
.uart_cc_ss = {.bus = CMSDK_APB, .state = SOC_SLEEP,
.device = DT_INST_REG_ADDR(2),},
.uart_cc_dss = {.bus = CMSDK_APB, .state = SOC_DEEPSLEEP,
.device = DT_INST_REG_ADDR(2),},
};
DEVICE_AND_API_INIT(uart_cmsdk_apb_2,
DT_INST_LABEL(2),
&uart_cmsdk_apb_init,
&uart_cmsdk_apb_dev_data_2,
&uart_cmsdk_apb_dev_cfg_2, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_cmsdk_apb_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
#ifdef CMSDK_APB_UART_2_IRQ
static void uart_cmsdk_apb_irq_config_func_2(struct device *dev)
{
IRQ_CONNECT(CMSDK_APB_UART_2_IRQ,
DT_INST_IRQ_BY_NAME(2, priority, irq),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_2),
0);
irq_enable(CMSDK_APB_UART_2_IRQ);
}
#else
static void uart_cmsdk_apb_irq_config_func_2(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(2, tx, irq),
DT_INST_IRQ_BY_NAME(2, tx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_2),
0);
irq_enable(DT_INST_IRQ_BY_NAME(2, tx, irq));
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(2, rx, irq),
DT_INST_IRQ_BY_NAME(2, rx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_2),
0);
irq_enable(DT_INST_IRQ_BY_NAME(2, rx, irq));
}
#endif
#endif
#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(2), okay) */
#if DT_NODE_HAS_STATUS(DT_DRV_INST(3), okay)
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_cmsdk_apb_irq_config_func_3(struct device *dev);
#endif
static const struct uart_device_config uart_cmsdk_apb_dev_cfg_3 = {
.base = (uint8_t *)DT_INST_REG_ADDR(3),
.sys_clk_freq = DT_INST_PROP_BY_PHANDLE(3, clocks, clock_frequency),
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_cmsdk_apb_irq_config_func_3,
#endif
};
static struct uart_cmsdk_apb_dev_data uart_cmsdk_apb_dev_data_3 = {
.baud_rate = DT_INST_PROP(3, current_speed),
.uart_cc_as = {.bus = CMSDK_APB, .state = SOC_ACTIVE,
.device = DT_INST_REG_ADDR(3),},
.uart_cc_ss = {.bus = CMSDK_APB, .state = SOC_SLEEP,
.device = DT_INST_REG_ADDR(3),},
.uart_cc_dss = {.bus = CMSDK_APB, .state = SOC_DEEPSLEEP,
.device = DT_INST_REG_ADDR(3),},
};
DEVICE_AND_API_INIT(uart_cmsdk_apb_3,
DT_INST_LABEL(3),
&uart_cmsdk_apb_init,
&uart_cmsdk_apb_dev_data_3,
&uart_cmsdk_apb_dev_cfg_3, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_cmsdk_apb_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
#ifdef CMSDK_APB_UART_3_IRQ
static void uart_cmsdk_apb_irq_config_func_3(struct device *dev)
{
IRQ_CONNECT(CMSDK_APB_UART_3_IRQ,
DT_INST_IRQ_BY_NAME(3, priority, irq),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_3),
0);
irq_enable(CMSDK_APB_UART_3_IRQ);
}
#else
static void uart_cmsdk_apb_irq_config_func_3(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(3, tx, irq),
DT_INST_IRQ_BY_NAME(3, tx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_3),
0);
irq_enable(DT_INST_IRQ_BY_NAME(3, tx, irq));
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(3, rx, irq),
DT_INST_IRQ_BY_NAME(3, rx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_3),
0);
irq_enable(DT_INST_IRQ_BY_NAME(3, rx, irq));
}
#endif
#endif
#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(3), okay) */
#if DT_NODE_HAS_STATUS(DT_DRV_INST(4), okay)
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
static void uart_cmsdk_apb_irq_config_func_4(struct device *dev);
#endif
static const struct uart_device_config uart_cmsdk_apb_dev_cfg_4 = {
.base = (uint8_t *)DT_INST_REG_ADDR(4),
.sys_clk_freq = DT_INST_PROP_BY_PHANDLE(4, clocks, clock_frequency),
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
.irq_config_func = uart_cmsdk_apb_irq_config_func_4,
#endif
};
static struct uart_cmsdk_apb_dev_data uart_cmsdk_apb_dev_data_4 = {
.baud_rate = DT_INST_PROP(4, current_speed),
.uart_cc_as = {.bus = CMSDK_APB, .state = SOC_ACTIVE,
.device = DT_INST_REG_ADDR(4),},
.uart_cc_ss = {.bus = CMSDK_APB, .state = SOC_SLEEP,
.device = DT_INST_REG_ADDR(4),},
.uart_cc_dss = {.bus = CMSDK_APB, .state = SOC_DEEPSLEEP,
.device = DT_INST_REG_ADDR(4),},
};
DEVICE_AND_API_INIT(uart_cmsdk_apb_4,
DT_INST_LABEL(4),
&uart_cmsdk_apb_init,
&uart_cmsdk_apb_dev_data_4,
&uart_cmsdk_apb_dev_cfg_4, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_cmsdk_apb_driver_api);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
#ifdef CMSDK_APB_UART_4_IRQ
static void uart_cmsdk_apb_irq_config_func_4(struct device *dev)
{
IRQ_CONNECT(CMSDK_APB_UART_4_IRQ,
DT_INST_IRQ_BY_NAME(4, priority, irq),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_4),
0);
irq_enable(CMSDK_APB_UART_4_IRQ);
}
#else
static void uart_cmsdk_apb_irq_config_func_4(struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(4, tx, irq),
DT_INST_IRQ_BY_NAME(4, tx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_4),
0);
irq_enable(DT_INST_IRQ_BY_NAME(4, tx, irq));
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(4, rx, irq),
DT_INST_IRQ_BY_NAME(4, rx, priority),
uart_cmsdk_apb_isr,
DEVICE_GET(uart_cmsdk_apb_4),
0);
irq_enable(DT_INST_IRQ_BY_NAME(4, rx, irq));
}
#endif
#endif
#endif /* DT_NODE_HAS_STATUS(DT_DRV_INST(4), okay) */
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