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