57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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/*
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* Copyright (c) 2006-2021, 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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* 2021.12.07 linzhenxing first version
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*/
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#ifndef __TTY_LDISC_
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#define __TTY_LDISC_
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#include <rtthread.h>
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#include <dfs.h>
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#include <dfs_fs.h>
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#include <tty.h>
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#if defined(RT_USING_POSIX_TERMIOS)
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#include <termios.h>
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#endif
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struct tty_struct;
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struct tty_ldisc_ops
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{
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char *name;
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int num;
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int (*open) (struct dfs_fd *fd);
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int (*close) (struct tty_struct *tty);
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int (*ioctl) (struct dfs_fd *fd, int cmd, void *args);
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int (*read) (struct dfs_fd *fd, void *buf, size_t count);
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int (*write) (struct dfs_fd *fd, const void *buf, size_t count);
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int (*flush) (struct dfs_fd *fd);
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int (*lseek) (struct dfs_fd *fd, off_t offset);
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int (*getdents) (struct dfs_fd *fd, struct dirent *dirp, uint32_t count);
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int (*poll) (struct dfs_fd *fd, struct rt_pollreq *req);
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void (*set_termios) (struct tty_struct *tty, struct termios *old);
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int (*receive_buf) (struct tty_struct *tty,char *cp, int count);
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int refcount;
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};
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struct tty_ldisc
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{
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struct tty_ldisc_ops *ops;
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struct tty_struct *tty;
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};
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#define TTY_LDISC_MAGIC 0x5403
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int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
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void tty_ldisc_kill(struct tty_struct *tty);
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void tty_ldisc_init(struct tty_struct *tty);
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void tty_ldisc_release(struct tty_struct *tty);
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void n_tty_init(void);
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#endif // __TTY_LDISC_
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