/*
   * (C) Copyright 2000
   * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #ifndef _STDIO_DEV_H_
  #define _STDIO_DEV_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_SYSTEM 0x80000000	/* Device is a system device		*/
  #define DEV_EXT_VIDEO	 0x00000001	/* Video extensions supported		*/
  
  /* Device information */
  struct stdio_dev {
  	int	flags;			/* Device flags: input/output/system	*/
  	int	ext;			/* Supported extensions			*/
  	char	name[32];		/* 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);
  
  /* 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;
  };
  
  /*
   * VIDEO EXTENSIONS
   */
  #define VIDEO_FORMAT_RGB_INDEXED	0x0000
  #define VIDEO_FORMAT_RGB_DIRECTCOLOR	0x0001
  #define VIDEO_FORMAT_YUYV_4_4_4		0x0010
  #define VIDEO_FORMAT_YUYV_4_2_2		0x0011
  
  typedef struct {
  	void *address;			/* Address of framebuffer		*/
  	ushort	width;			/* Horizontal resolution		*/
  	ushort	height;			/* Vertical resolution			*/
  	uchar	format;			/* Format				*/
  	uchar	colors;			/* Colors number or color depth		*/
  	void (*setcolreg) (int, int, int, int);
  	void (*getcolreg) (int, void *);
  } video_ext_t;
  
  /*
   * 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_init() - Sets up stdio ready for use
   *
   * This calls stdio_init_tables() and stdio_add_devices()
   */
  int stdio_init(void);
  
  void	stdio_print_current_devices(void);
  #ifdef CONFIG_SYS_STDIO_DEREGISTER
  int stdio_deregister(const char *devname, int force);
  int stdio_deregister_dev(struct stdio_dev *dev, int force);
  #endif
  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);
  
  #ifdef CONFIG_LCD
  int	drv_lcd_init (void);
  #endif
  #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
  int	drv_video_init (void);
  #endif
  #ifdef CONFIG_KEYBOARD
  int	drv_keyboard_init (void);
  #endif
  #ifdef CONFIG_USB_TTY
  int	drv_usbtty_init (void);
  #endif
  #ifdef CONFIG_NETCONSOLE
  int	drv_nc_init (void);
  #endif
  #ifdef CONFIG_JTAG_CONSOLE
  int drv_jtag_console_init (void);
  #endif
  #ifdef CONFIG_CBMEM_CONSOLE
  int cbmemc_init(void);
  #endif
  
  #endif