2  *  linux/include/linux/console.h
43  *		Invoked by csi_M and printing to the console.
44  * @con_set_palette: sets the palette of the console to @table (optional)
45  * @con_scrolldelta: the contents of the console should be scrolled by @lines.
84 	 * Flush the video console driver's scrollback buffer
88 	 * Prepare the console for the debugger.  This includes, but is not
89 	 * limited to, unblanking the console, loading an appropriate
94 	 * Restore the console to its pre-debug state as closely as possible.
101 extern const struct consw dummy_con;	/* dummy console buffer */
102 extern const struct consw vga_con;	/* VGA text console */
103 extern const struct consw newport_con;	/* SGI Newport console  */
104 extern const struct consw prom_con;	/* SPARC PROM console */
130  * The interface for a console, or any other device that wants to capture
131  * console messages (printer driver?)
133  * If a console driver is marked CON_BOOT then it will be auto-unregistered
134  * when the first real console is registered.  This is for early-printk drivers.
145 struct console {  struct
147 	void	(*write)(struct console *, const char *, unsigned);  argument
148 	int	(*read)(struct console *, char *, unsigned);  argument
149 	struct tty_driver *(*device)(struct console *, int *);  argument
151 	int	(*setup)(struct console *, char *);  argument
152 	int	(*match)(struct console *, char *name, int idx, char *options);  argument
157 	struct	 console *next;  argument
161  * for_each_console() allows you to iterate on each console
167 extern struct console *early_console;
175 extern void register_console(struct console *);
176 extern int unregister_console(struct console *);
177 extern struct console *console_drivers;
185 extern void console_stop(struct console *);
186 extern void console_start(struct console *);
188 extern int braille_register_console(struct console *, int index,
190 extern int braille_unregister_console(struct console *);
199 /* Suspend and resume console messages over PM events */
233 /* For deferred console takeover */