summaryrefslogtreecommitdiffstats
path: root/include/stdio_dev.h
blob: 95d6246f59ee7be3d6a9ea2eca1066f7adcba5d0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*
 * (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
OpenPOWER on IntegriCloud