include/devices.h

   1 /*
   2  * (C) Copyright 2000
   3  * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <lists.h>
  25
  26 #ifndef _DEVICES_H_
  27 #define _DEVICES_H_
  28
  29 /*
  30  * CONSOLE DEVICES
  31  */
  32
  33 #define DEV_FLAGS_INPUT  0x00000001     /* Device can be used as input  console */
  34 #define DEV_FLAGS_OUTPUT 0x00000002     /* Device can be used as output console */
  35 #define DEV_FLAGS_SYSTEM 0x80000000     /* Device is a system device            */
  36 #define DEV_EXT_VIDEO    0x00000001     /* Video extensions supported           */
  37
  38 /* Device information */
  39 typedef struct {
  40         int     flags;                  /* Device flags: input/output/system    */
  41         int     ext;                    /* Supported extensions                 */
  42         char    name[16];               /* Device name                          */
  43
  44 /* GENERAL functions */
  45
  46         int (*start) (void);            /* To start the device                  */
  47         int (*stop) (void);             /* To stop the device                   */
  48
  49 /* OUTPUT functions */
  50
  51         void (*putc) (const char c);    /* To put a char                        */
  52         void (*puts) (const char *s);   /* To put a string (accelerator)        */
  53
  54 /* INPUT functions */
  55
  56         int (*tstc) (void);             /* To test if a char is ready...        */
  57         int (*getc) (void);             /* To get that char                     */
  58
  59 /* Other functions */
  60
  61         void *priv;                     /* Private extensions                   */
  62 } device_t;
  63
  64 /*
  65  * VIDEO EXTENSIONS
  66  */
  67 #define VIDEO_FORMAT_RGB_INDEXED        0x0000
  68 #define VIDEO_FORMAT_RGB_DIRECTCOLOR    0x0001
  69 #define VIDEO_FORMAT_YUYV_4_4_4         0x0010
  70 #define VIDEO_FORMAT_YUYV_4_2_2         0x0011
  71
  72 typedef struct {
  73         void *address;                  /* Address of framebuffer               */
  74         ushort  width;                  /* Horizontal resolution                */
  75         ushort  height;                 /* Vertical resolution                  */
  76         uchar   format;                 /* Format                               */
  77         uchar   colors;                 /* Colors number or color depth         */
  78         void (*setcolreg) (int, int, int, int);
  79         void (*getcolreg) (int, void *);
  80 } video_ext_t;
  81
  82 /*
  83  * VARIABLES
  84  */
  85 extern list_t devlist;
  86 extern device_t *stdio_devices[];
  87 extern char *stdio_names[MAX_FILES];
  88
  89 /*
  90  * PROTOTYPES
  91  */
  92 int     device_register (device_t * dev);
  93 int     devices_init (void);
  94 int     devices_done (void);
  95 int     device_deregister(char *devname);
  96 #ifdef CONFIG_LCD
  97 int     drv_lcd_init (void);
  98 #endif
  99 #ifdef CONFIG_VFD
 100 int     drv_vfd_init (void);
 101 #endif
 102 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
 103 int     drv_video_init (void);
 104 #endif
 105 #ifdef CONFIG_KEYBOARD
 106 int     drv_keyboard_init (void);
 107 #endif
 108 #ifdef CONFIG_USB_TTY
 109 int     drv_usbtty_init (void);
 110 #endif
 111 #ifdef CONFIG_NETCONSOLE
 112 int     drv_nc_init (void);
 113 #endif
 114
 115 #endif  /* _DEVICES_H_ */