include/stdio_dev.h

   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[32];               /* 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