source: rtems/cpukit/libmisc/mw-fb/mw_fb.h @ 7895090

/*
 * Copyright (c) 2000 - Rosimildo da Silva
 *
 * MODULE DESCRIPTION:
 * Micro FrameBuffer interface for Embedded Systems.
 *
 * $Id$
 */

#ifndef _MW_FB_H
#define _MW_FB_H

#include <stdint.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* ioctls
   0x46 is 'F'                                */
#define FBIOGET_VSCREENINFO     0x4600
#define FBIOPUT_VSCREENINFO     0x4601
#define FBIOGET_FSCREENINFO     0x4602
#define FBIOGETCMAP             0x4604
#define FBIOPUTCMAP             0x4605
#define FB_EXEC_FUNCTION        0x4606


#define FB_TYPE_PACKED_PIXELS          0    /* Packed Pixels    */
#define FB_TYPE_PLANES                 1    /* Non interleaved planes */
#define FB_TYPE_INTERLEAVED_PLANES     2    /* Interleaved planes    */
#define FB_TYPE_TEXT                   3    /* Text/attributes    */
#define FB_TYPE_VGA_PLANES             4    /* EGA/VGA planes    */
#define FB_TYPE_VIRTUAL_BUFFER         5    /* Virtual Buffer */


#define FB_VISUAL_MONO01               0    /* Monochr. 1=Black 0=White */
#define FB_VISUAL_MONO10               1    /* Monochr. 1=White 0=Black */
#define FB_VISUAL_TRUECOLOR            2    /* True color    */
#define FB_VISUAL_PSEUDOCOLOR          3    /* Pseudo color (like atari) */
#define FB_VISUAL_DIRECTCOLOR          4    /* Direct color */
#define FB_VISUAL_STATIC_PSEUDOCOLOR   5    /* Pseudo color readonly */

#define FB_ACCEL_NONE                  0    /* no hardware accelerator    */

struct fb_bitfield {
        uint32_t offset;                /* beginning of bitfield        */
        uint32_t length;                /* length of bitfield           */
        uint32_t msb_right;             /* != 0 : Most significant bit is */ 
                                        /* right */ 
};

struct fb_var_screeninfo {
    uint32_t xres;                  /* visible resolution        */
    uint32_t yres;
    uint32_t bits_per_pixel;        /* guess what            */
    struct fb_bitfield red;         /* bitfield in fb mem if true color, */
    struct fb_bitfield green;       /* else only length is significant */
    struct fb_bitfield blue;
    struct fb_bitfield transp;      /* transparency                     */
};

struct fb_fix_screeninfo {
    volatile char *smem_start;  /* Start of frame buffer mem  */
                                /* (physical address)         */
    uint32_t smem_len;          /* Length of frame buffer mem */
    uint32_t type;              /* see FB_TYPE_*              */
    uint32_t visual;            /* see FB_VISUAL_*            */
    uint32_t line_length;       /* number of chars per line */
};

struct fb_cmap {
    uint32_t start;                /* First entry    */
    uint32_t len;                  /* Number of entries */
    uint16_t *red;                 /* Red values    */
    uint16_t *green;
    uint16_t *blue;
    uint16_t *transp;              /* transparency, can be NULL */
};



#ifdef  __cplusplus
}
#endif

#endif /* _MW_FB_H */