stdio_dev.h 3.15 KB
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/*
 * (C) Copyright 2000
 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
 *
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 * SPDX-License-Identifier:	GPL-2.0+
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 */

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#ifndef _STDIO_DEV_H_
#define _STDIO_DEV_H_
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#include <linux/list.h>
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/*
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 * STDIO DEVICES
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 */

#define DEV_FLAGS_INPUT	 0x00000001	/* Device can be used as input	console */
#define DEV_FLAGS_OUTPUT 0x00000002	/* Device can be used as output console */

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/* Device information */
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struct stdio_dev {
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	int	flags;			/* Device flags: input/output/system	*/
	int	ext;			/* Supported extensions			*/
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	char	name[32];		/* Device name				*/
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/* GENERAL functions */

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	int (*start)(struct stdio_dev *dev);	/* To start the device */
	int (*stop)(struct stdio_dev *dev);	/* To stop the device */
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/* OUTPUT functions */

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	/* 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);
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/* INPUT functions */

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	/* To test if a char is ready... */
	int (*tstc)(struct stdio_dev *dev);
	int (*getc)(struct stdio_dev *dev);	/* To get that char */
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/* Other functions */

	void *priv;			/* Private extensions			*/
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	struct list_head list;
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};
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/*
 * 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
 */
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extern struct stdio_dev *stdio_devices[];
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extern char *stdio_names[MAX_FILES];

/*
 * PROTOTYPES
 */
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int	stdio_register (struct stdio_dev * dev);
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int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
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/**
 * 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);

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void	stdio_print_current_devices(void);
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#ifdef CONFIG_SYS_STDIO_DEREGISTER
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int stdio_deregister(const char *devname, int force);
int stdio_deregister_dev(struct stdio_dev *dev, int force);
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#endif
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struct list_head* stdio_get_list(void);
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struct stdio_dev* stdio_get_by_name(const char* name);
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struct stdio_dev* stdio_clone(struct stdio_dev *dev);
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#ifdef CONFIG_LCD
int	drv_lcd_init (void);
#endif
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#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
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int	drv_video_init (void);
#endif
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#ifdef CONFIG_KEYBOARD
int	drv_keyboard_init (void);
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#endif
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#ifdef CONFIG_USB_TTY
int	drv_usbtty_init (void);
#endif
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#ifdef CONFIG_NETCONSOLE
int	drv_nc_init (void);
#endif
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#ifdef CONFIG_JTAG_CONSOLE
int drv_jtag_console_init (void);
#endif
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#ifdef CONFIG_CBMEM_CONSOLE
int cbmemc_init(void);
#endif
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#endif