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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2000
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
*/
#ifndef _STDIO_DEV_H_
#define _STDIO_DEV_H_
#include <stdio.h>
#include <linux/list.h>
/*
* STDIO DEVICES
*/
#define DEV_FLAGS_INPUT 0x00000001 /* Device can be used as input console */
#define DEV_FLAGS_OUTPUT 0x00000002 /* Device can be used as output console */
#define DEV_FLAGS_DM 0x00000004 /* Device priv is a struct udevice * */
#define STDIO_NAME_LEN 32
int stdio_file_to_flags(const int file);
/* Device information */
struct stdio_dev {
int flags; /* Device flags: input/output/system */
int ext; /* Supported extensions */
char name[STDIO_NAME_LEN]; /* Device name */
/* GENERAL functions */
int (*start)(struct stdio_dev *dev); /* To start the device */
int (*stop)(struct stdio_dev *dev); /* To stop the device */
/* OUTPUT functions */
/* To put a char */
void (*putc)(struct stdio_dev *dev, const char c);
/* To put a string (accelerator) */
void (*puts)(struct stdio_dev *dev, const char *s);
#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
/* To flush output queue */
void (*flush)(struct stdio_dev *dev);
#define STDIO_DEV_ASSIGN_FLUSH(dev, flush_func) ((dev)->flush = (flush_func))
#else
#define STDIO_DEV_ASSIGN_FLUSH(dev, flush_func)
#endif
/* INPUT functions */
/* To test if a char is ready... */
int (*tstc)(struct stdio_dev *dev);
int (*getc)(struct stdio_dev *dev); /* To get that char */
/* Other functions */
void *priv; /* Private extensions */
struct list_head list;
};
/*
* VARIABLES
*/
extern struct stdio_dev *stdio_devices[];
extern char *stdio_names[MAX_FILES];
/*
* PROTOTYPES
*/
int stdio_register(struct stdio_dev *dev);
int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
/**
* stdio_init_tables() - set up stdio tables ready for devices
*
* This does not add any devices, but just prepares stdio for use.
*/
int stdio_init_tables(void);
/**
* stdio_add_devices() - Add stdio devices to the table
*
* This makes calls to all the various subsystems that use stdio, to make
* them register with stdio.
*/
int stdio_add_devices(void);
/**
* stdio_deregister_dev() - deregister the device "devname".
*
* @dev: Stdio device to deregister
* @force: true to force deregistration even if in use
*
* returns 0 on success, -EBUSY if device is assigned
*/
int stdio_deregister_dev(struct stdio_dev *dev, int force);
struct list_head *stdio_get_list(void);
struct stdio_dev *stdio_get_by_name(const char *name);
struct stdio_dev *stdio_clone(struct stdio_dev *dev);
int drv_lcd_init(void);
int drv_video_init(void);
int drv_keyboard_init(void);
int drv_usbtty_init(void);
int drv_usbacm_init(void);
int drv_nc_init(void);
int drv_jtag_console_init(void);
int cbmemc_init(void);
#endif
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