75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
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/*
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* Copyright (c) 2006-2024 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-11-16 GuEe-GUI first version
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*/
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#ifndef __SERIAL_8250_H__
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#define __SERIAL_8250_H__
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <ioremap.h>
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#include "regs.h"
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#include "serial_dm.h"
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enum
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{
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PORT_IO,
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PORT_MMIO,
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PORT_MMIO16,
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PORT_MMIO32,
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PORT_MMIO32BE,
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};
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struct serial8250
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{
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struct rt_serial_device parent;
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struct rt_clk *clk;
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int irq;
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void *base;
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rt_size_t size;
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rt_uint32_t freq; /* frequency */
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rt_uint32_t regshift; /* reg offset shift */
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rt_uint8_t iotype; /* io access style */
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struct rt_spinlock spinlock;
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rt_uint32_t (*serial_in)(struct serial8250 *, int offset);
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void (*serial_out)(struct serial8250 *, int offset, int value);
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rt_err_t (*handle_irq)(struct serial8250 *, int irq);
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/* Free all resource (and parent) by child */
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void (*remove)(struct serial8250 *);
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void *data;
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};
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#define serial8250_alloc(obj) rt_calloc(1, sizeof(typeof(*obj)))
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#define raw_to_serial8250(raw_serial) rt_container_of(raw_serial, struct serial8250, parent)
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rt_err_t serial8250_config(struct serial8250 *serial, const char *options);
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rt_err_t serial8250_setup(struct serial8250 *serial);
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rt_err_t serial8250_remove(struct serial8250 *serial);
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rt_uint32_t serial8250_in(struct serial8250 *serial, int offset);
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void serial8250_out(struct serial8250 *serial, int offset, int value);
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rt_err_t serial8250_uart_configure(struct rt_serial_device *raw_serial, struct serial_configure *cfg);
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rt_err_t serial8250_uart_control(struct rt_serial_device *raw_serial, int cmd, void *arg);
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int serial8250_uart_putc(struct rt_serial_device *raw_serial, char c);
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int serial8250_uart_getc(struct rt_serial_device *raw_serial);
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int serial8250_early_putc(struct rt_serial_device *raw_serial, char c);
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rt_err_t serial8250_early_fdt_setup(struct serial8250 *serial, struct rt_fdt_earlycon *con, const char *options);
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extern struct serial8250 early_serial8250;
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extern const struct rt_uart_ops serial8250_uart_ops;
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#endif /* __SERIAL_8250_H__ */
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