path: root/include/stdio_dev.h (plain)
blob: 24da23fe501196d650ff71d5062d3528ce362160

1	/*
2	* (C) Copyright 2000
3	* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
4	*
5	* SPDX-License-Identifier: GPL-2.0+
6	*/
7
8	#ifndef _STDIO_DEV_H_
9	#define _STDIO_DEV_H_
10
11	#include <linux/list.h>
12
13	/*
14	* STDIO DEVICES
15	*/
16
17	#define DEV_FLAGS_INPUT 0x00000001 /* Device can be used as input console */
18	#define DEV_FLAGS_OUTPUT 0x00000002 /* Device can be used as output console */
19	#define DEV_FLAGS_SYSTEM 0x80000000 /* Device is a system device */
20	#define DEV_EXT_VIDEO 0x00000001 /* Video extensions supported */
21
22	/* Device information */
23	struct stdio_dev {
24	int flags; /* Device flags: input/output/system */
25	int ext; /* Supported extensions */
26	char name[16]; /* Device name */
27
28	/* GENERAL functions */
29
30	int (*start)(struct stdio_dev *dev); /* To start the device */
31	int (*stop)(struct stdio_dev *dev); /* To stop the device */
32
33	/* OUTPUT functions */
34
35	/* To put a char */
36	void (*putc)(struct stdio_dev *dev, const char c);
37	/* To put a string (accelerator) */
38	void (*puts)(struct stdio_dev *dev, const char *s);
39
40	/* INPUT functions */
41
42	/* To test if a char is ready... */
43	int (*tstc)(struct stdio_dev *dev);
44	int (*getc)(struct stdio_dev *dev); /* To get that char */
45
46	/* Other functions */
47
48	void *priv; /* Private extensions */
49	struct list_head list;
50	};
51
52	/*
53	* VIDEO EXTENSIONS
54	*/
55	#define VIDEO_FORMAT_RGB_INDEXED 0x0000
56	#define VIDEO_FORMAT_RGB_DIRECTCOLOR 0x0001
57	#define VIDEO_FORMAT_YUYV_4_4_4 0x0010
58	#define VIDEO_FORMAT_YUYV_4_2_2 0x0011
59
60	typedef struct {
61	void *address; /* Address of framebuffer */
62	ushort width; /* Horizontal resolution */
63	ushort height; /* Vertical resolution */
64	uchar format; /* Format */
65	uchar colors; /* Colors number or color depth */
66	void (*setcolreg) (int, int, int, int);
67	void (*getcolreg) (int, void *);
68	} video_ext_t;
69
70	/*
71	* VARIABLES
72	*/
73	extern struct stdio_dev *stdio_devices[];
74	extern char *stdio_names[MAX_FILES];
75
76	/*
77	* PROTOTYPES
78	*/
79	int stdio_register (struct stdio_dev * dev);
80	int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
81
82	/**
83	* stdio_init_tables() - set up stdio tables ready for devices
84	*
85	* This does not add any devices, but just prepares stdio for use.
86	*/
87	int stdio_init_tables(void);
88
89	/**
90	* stdio_add_devices() - Add stdio devices to the table
91	*
92	* This makes calls to all the various subsystems that use stdio, to make
93	* them register with stdio.
94	*/
95	int stdio_add_devices(void);
96
97	/**
98	* stdio_init() - Sets up stdio ready for use
99	*
100	* This calls stdio_init_tables() and stdio_add_devices()
101	*/
102	int stdio_init(void);
103
104	void stdio_print_current_devices(void);
105	#ifdef CONFIG_SYS_STDIO_DEREGISTER
106	int stdio_deregister(const char *devname, int force);
107	int stdio_deregister_dev(struct stdio_dev *dev, int force);
108	#endif
109	struct list_head* stdio_get_list(void);
110	struct stdio_dev* stdio_get_by_name(const char* name);
111	struct stdio_dev* stdio_clone(struct stdio_dev *dev);
112
113	#ifdef CONFIG_LCD
114	int drv_lcd_init (void);
115	#endif
116	#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
117	int drv_video_init (void);
118	#endif
119	#ifdef CONFIG_KEYBOARD
120	int drv_keyboard_init (void);
121	#endif
122	#ifdef CONFIG_USB_TTY
123	int drv_usbtty_init (void);
124	#endif
125	#ifdef CONFIG_NETCONSOLE
126	int drv_nc_init (void);
127	#endif
128	#ifdef CONFIG_JTAG_CONSOLE
129	int drv_jtag_console_init (void);
130	#endif
131	#ifdef CONFIG_CBMEM_CONSOLE
132	int cbmemc_init(void);
133	#endif
134
135	#endif
136