include/devices.h

/*
 * (C) Copyright 2000
 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <linux/list.h>

#ifndef _DEVICES_H_
#define _DEVICES_H_

/*
 * CONSOLE 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 */
typedef struct {
	int	flags;			/* Device flags: input/output/system	*/
	int	ext;			/* Supported extensions			*/
	char	name[16];		/* Device name				*/

/* GENERAL functions */

	int (*start) (void);		/* To start the device			*/
	int (*stop) (void);		/* To stop the device			*/

/* OUTPUT functions */

	void (*putc) (const char c);	/* To put a char			*/
	void (*puts) (const char *s);	/* To put a string (accelerator)	*/

/* INPUT functions */

	int (*tstc) (void);		/* To test if a char is ready...	*/
	int (*getc) (void);		/* To get that char			*/

/* Other functions */

	void *priv;			/* Private extensions			*/
	struct list_head list;
} device_t;

/*
 * 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 device_t *stdio_devices[];
extern char *stdio_names[MAX_FILES];

/*
 * PROTOTYPES
 */
int	device_register (device_t * dev);
int	devices_init (void);
int	device_deregister(char *devname);
struct list_head* device_get_list(void);
device_t* device_get_by_name(char* name);
device_t* device_clone(device_t *dev);

#ifdef CONFIG_LCD
int	drv_lcd_init (void);
#endif
#ifdef CONFIG_VFD
int	drv_vfd_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

#endif	/* _DEVICES_H_ */