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_DM     0x00000004     /* Device priv is a struct udevice * */
  20
  21 /* Device information */
  22 struct stdio_dev {
  23         int     flags;                  /* Device flags: input/output/system    */
  24         int     ext;                    /* Supported extensions                 */
  25         char    name[32];               /* Device name                          */
  26
  27 /* GENERAL functions */
  28
  29         int (*start)(struct stdio_dev *dev);    /* To start the device */
  30         int (*stop)(struct stdio_dev *dev);     /* To stop the device */
  31
  32 /* OUTPUT functions */
  33
  34         /* To put a char */
  35         void (*putc)(struct stdio_dev *dev, const char c);
  36         /* To put a string (accelerator) */
  37         void (*puts)(struct stdio_dev *dev, const char *s);
  38
  39 /* INPUT functions */
  40
  41         /* To test if a char is ready... */
  42         int (*tstc)(struct stdio_dev *dev);
  43         int (*getc)(struct stdio_dev *dev);     /* To get that char */
  44
  45 /* Other functions */
  46
  47         void *priv;                     /* Private extensions                   */
  48         struct list_head list;
  49 };
  50
  51 /*
  52  * VIDEO EXTENSIONS
  53  */
  54 #define VIDEO_FORMAT_RGB_INDEXED        0x0000
  55 #define VIDEO_FORMAT_RGB_DIRECTCOLOR    0x0001
  56 #define VIDEO_FORMAT_YUYV_4_4_4         0x0010
  57 #define VIDEO_FORMAT_YUYV_4_2_2         0x0011
  58
  59 typedef struct {
  60         void *address;                  /* Address of framebuffer               */
  61         ushort  width;                  /* Horizontal resolution                */
  62         ushort  height;                 /* Vertical resolution                  */
  63         uchar   format;                 /* Format                               */
  64         uchar   colors;                 /* Colors number or color depth         */
  65         void (*setcolreg) (int, int, int, int);
  66         void (*getcolreg) (int, void *);
  67 } video_ext_t;
  68
  69 /*
  70  * VARIABLES
  71  */
  72 extern struct stdio_dev *stdio_devices[];
  73 extern char *stdio_names[MAX_FILES];
  74
  75 /*
  76  * PROTOTYPES
  77  */
  78 int     stdio_register (struct stdio_dev * dev);
  79 int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
  80
  81 /**
  82  * stdio_init_tables() - set up stdio tables ready for devices
  83  *
  84  * This does not add any devices, but just prepares stdio for use.
  85  */
  86 int stdio_init_tables(void);
  87
  88 /**
  89  * stdio_add_devices() - Add stdio devices to the table
  90  *
  91  * This makes calls to all the various subsystems that use stdio, to make
  92  * them register with stdio.
  93  */
  94 int stdio_add_devices(void);
  95
  96 /**
  97  * stdio_init() - Sets up stdio ready for use
  98  *
  99  * This calls stdio_init_tables() and stdio_add_devices()
 100  */
 101 int stdio_init(void);
 102
 103 void    stdio_print_current_devices(void);
 104 #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
 105 int stdio_deregister(const char *devname, int force);
 106 int stdio_deregister_dev(struct stdio_dev *dev, int force);
 107 #endif
 108 struct list_head* stdio_get_list(void);
 109 struct stdio_dev* stdio_get_by_name(const char* name);
 110 struct stdio_dev* stdio_clone(struct stdio_dev *dev);
 111
 112 #ifdef CONFIG_LCD
 113 int     drv_lcd_init (void);
 114 #endif
 115 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
 116 int     drv_video_init (void);
 117 #endif
 118 #ifdef CONFIG_KEYBOARD
 119 int     drv_keyboard_init (void);
 120 #endif
 121 #ifdef CONFIG_USB_TTY
 122 int     drv_usbtty_init (void);
 123 #endif
 124 #ifdef CONFIG_NETCONSOLE
 125 int     drv_nc_init (void);
 126 #endif
 127 #ifdef CONFIG_JTAG_CONSOLE
 128 int drv_jtag_console_init (void);
 129 #endif
 130 #ifdef CONFIG_CBMEM_CONSOLE
 131 int cbmemc_init(void);
 132 #endif
 133
 134 #endif