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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-11-16 GuEe-GUI first version
*/
#ifndef __SERIAL_8250_H__
#define __SERIAL_8250_H__
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <drivers/serial_dm.h>
#include <ioremap.h>
#include "regs.h"
enum
{
PORT_UNKNOWN,
PORT_IO,
PORT_MMIO,
PORT_MMIO16,
PORT_MMIO32,
PORT_MMIO32BE,
};
struct serial8250
{
struct rt_serial_device parent;
struct rt_clk *clk;
int irq;
void *base;
rt_size_t size;
rt_uint32_t freq; /* frequency */
rt_uint32_t regshift; /* reg offset shift */
rt_uint8_t iotype; /* io access style */
struct rt_spinlock spinlock;
rt_err_t (*serial_ios)(struct serial8250 *, struct serial_configure *ios);
rt_uint32_t (*serial_in)(struct serial8250 *, int offset);
void (*serial_out)(struct serial8250 *, int offset, int value);
rt_err_t (*serial_dma_enable)(struct serial8250 *, rt_bool_t enabled);
rt_ssize_t (*serial_dma_tx)(struct serial8250 *, const rt_uint8_t *buf, rt_size_t size);
rt_ssize_t (*serial_dma_rx)(struct serial8250 *, rt_uint8_t *buf, rt_size_t size);
rt_err_t (*handle_irq)(struct serial8250 *, int irq);
/* Free all resource (and parent) by child */
void (*remove)(struct serial8250 *);
void *data;
};
#define serial8250_alloc(obj) rt_calloc(1, sizeof(typeof(*obj)))
#define raw_to_serial8250(raw_serial) rt_container_of(raw_serial, struct serial8250, parent)
rt_err_t serial8250_config(struct serial8250 *serial, const char *options);
rt_err_t serial8250_setup(struct serial8250 *serial);
rt_err_t serial8250_remove(struct serial8250 *serial);
rt_uint32_t serial8250_in(struct serial8250 *serial, int offset);
void serial8250_out(struct serial8250 *serial, int offset, int value);
void serial8250_dma_tx_done(struct serial8250 *serial);
void serial8250_dma_rx_done(struct serial8250 *serial, int recv_len);
rt_err_t serial8250_ios(struct serial8250 *serial, struct serial_configure *cfg);
rt_err_t serial8250_uart_configure(struct rt_serial_device *raw_serial, struct serial_configure *cfg);
rt_err_t serial8250_uart_control(struct rt_serial_device *raw_serial, int cmd, void *arg);
int serial8250_uart_putc(struct rt_serial_device *raw_serial, char c);
int serial8250_uart_getc(struct rt_serial_device *raw_serial);
rt_ssize_t serial8250_uart_dma_transmit(struct rt_serial_device *raw_serial,
rt_uint8_t *buf, rt_size_t size, int direction);
int serial8250_early_putc(struct rt_serial_device *raw_serial, char c);
rt_err_t serial8250_early_fdt_setup(struct serial8250 *serial, struct rt_fdt_earlycon *con, const char *options);
extern struct serial8250 early_serial8250;
extern const struct rt_uart_ops serial8250_uart_ops;
#endif /* __SERIAL_8250_H__ */
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