Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / console.h
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1da177e4
LT
1/*
2 * linux/include/linux/console.h
3 *
4 * Copyright (C) 1993 Hamish Macdonald
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 *
10 * Changed:
11 * 10-Mar-94: Arno Griffioen: Conversion for vt100 emulator port from PC LINUX
12 */
13
14#ifndef _LINUX_CONSOLE_H_
15#define _LINUX_CONSOLE_H_ 1
16
17#include <linux/types.h>
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18
19struct vc_data;
20struct console_font_op;
21struct console_font;
22struct module;
1b135431 23struct tty_struct;
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24
25/*
26 * this is what the terminal answers to a ESC-Z or csi0c query.
27 */
28#define VT100ID "\033[?1;2c"
29#define VT102ID "\033[?6c"
30
31struct consw {
32 struct module *owner;
33 const char *(*con_startup)(void);
34 void (*con_init)(struct vc_data *, int);
35 void (*con_deinit)(struct vc_data *);
36 void (*con_clear)(struct vc_data *, int, int, int, int);
37 void (*con_putc)(struct vc_data *, int, int, int);
38 void (*con_putcs)(struct vc_data *, const unsigned short *, int, int, int);
39 void (*con_cursor)(struct vc_data *, int);
40 int (*con_scroll)(struct vc_data *, int, int, int, int);
41 void (*con_bmove)(struct vc_data *, int, int, int, int, int, int);
42 int (*con_switch)(struct vc_data *);
43 int (*con_blank)(struct vc_data *, int, int);
44 int (*con_font_set)(struct vc_data *, struct console_font *, unsigned);
45 int (*con_font_get)(struct vc_data *, struct console_font *);
46 int (*con_font_default)(struct vc_data *, struct console_font *, char *);
47 int (*con_font_copy)(struct vc_data *, int);
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48 int (*con_resize)(struct vc_data *, unsigned int, unsigned int,
49 unsigned int);
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50 int (*con_set_palette)(struct vc_data *, unsigned char *);
51 int (*con_scrolldelta)(struct vc_data *, int);
52 int (*con_set_origin)(struct vc_data *);
53 void (*con_save_screen)(struct vc_data *);
fa6ce9ab 54 u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8, u8);
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55 void (*con_invert_region)(struct vc_data *, u16 *, int);
56 u16 *(*con_screen_pos)(struct vc_data *, int);
57 unsigned long (*con_getxy)(struct vc_data *, unsigned long, int *, int *);
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58 /*
59 * Prepare the console for the debugger. This includes, but is not
60 * limited to, unblanking the console, loading an appropriate
61 * palette, and allowing debugger generated output.
62 */
63 int (*con_debug_enter)(struct vc_data *);
64 /*
65 * Restore the console to its pre-debug state as closely as possible.
66 */
67 int (*con_debug_leave)(struct vc_data *);
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68};
69
70extern const struct consw *conswitchp;
71
72extern const struct consw dummy_con; /* dummy console buffer */
73extern const struct consw vga_con; /* VGA text console */
74extern const struct consw newport_con; /* SGI Newport console */
75extern const struct consw prom_con; /* SPARC PROM console */
76
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AD
77int con_is_bound(const struct consw *csw);
78int register_con_driver(const struct consw *csw, int first, int last);
79int unregister_con_driver(const struct consw *csw);
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80int take_over_console(const struct consw *sw, int first, int last, int deflt);
81void give_up_console(const struct consw *sw);
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82int con_debug_enter(struct vc_data *vc);
83int con_debug_leave(void);
84
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85/* scroll */
86#define SM_UP (1)
87#define SM_DOWN (2)
88
89/* cursor */
90#define CM_DRAW (1)
91#define CM_ERASE (2)
92#define CM_MOVE (3)
93
94/*
95 * The interface for a console, or any other device that wants to capture
96 * console messages (printer driver?)
97 *
98 * If a console driver is marked CON_BOOT then it will be auto-unregistered
99 * when the first real console is registered. This is for early-printk drivers.
100 */
101
102#define CON_PRINTBUFFER (1)
103#define CON_CONSDEV (2) /* Last on the command line */
104#define CON_ENABLED (4)
105#define CON_BOOT (8)
76a8ad29 106#define CON_ANYTIME (16) /* Safe to call when cpu is offline */
f7511d5f 107#define CON_BRL (32) /* Used for a braille device */
1da177e4 108
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109struct console {
110 char name[16];
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111 void (*write)(struct console *, const char *, unsigned);
112 int (*read)(struct console *, char *, unsigned);
113 struct tty_driver *(*device)(struct console *, int *);
114 void (*unblank)(void);
115 int (*setup)(struct console *, char *);
18a8bd94 116 int (*early_setup)(void);
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117 short flags;
118 short index;
119 int cflag;
120 void *data;
121 struct console *next;
122};
123
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MA
124extern int console_set_on_cmdline;
125
1da177e4 126extern int add_preferred_console(char *name, int idx, char *options);
18a8bd94 127extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options);
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128extern void register_console(struct console *);
129extern int unregister_console(struct console *);
130extern struct console *console_drivers;
131extern void acquire_console_sem(void);
132extern int try_acquire_console_sem(void);
133extern void release_console_sem(void);
134extern void console_conditional_schedule(void);
135extern void console_unblank(void);
136extern struct tty_driver *console_device(int *);
137extern void console_stop(struct console *);
138extern void console_start(struct console *);
139extern int is_console_locked(void);
f7511d5f
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140extern int braille_register_console(struct console *, int index,
141 char *console_options, char *braille_options);
142extern int braille_unregister_console(struct console *);
1da177e4 143
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144extern int console_suspend_enabled;
145
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146/* Suspend and resume console messages over PM events */
147extern void suspend_console(void);
148extern void resume_console(void);
149
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AB
150int mda_console_init(void);
151void prom_con_init(void);
152
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153void vcs_make_sysfs(int index);
154void vcs_remove_sysfs(int index);
1b135431 155
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156/* Some debug stub to catch some of the obvious races in the VT code */
157#if 1
158#define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress)
159#else
160#define WARN_CONSOLE_UNLOCKED()
161#endif
162
163/* VESA Blanking Levels */
164#define VESA_NO_BLANKING 0
165#define VESA_VSYNC_SUSPEND 1
166#define VESA_HSYNC_SUSPEND 2
167#define VESA_POWERDOWN 3
168
f453ba04
DA
169#ifdef CONFIG_VGA_CONSOLE
170extern bool vgacon_text_force(void);
171#endif
172
1da177e4 173#endif /* _LINUX_CONSOLE_H */