sys/arch/atari/dev/grfabs_fal.h

   1 /*      $NetBSD: grfabs_fal.h,v 1.4 2009/03/14 14:45:56 dsl Exp $       */
   2
   3 /*
   4  * Copyright (c) 1995 Thomas Gerner.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef _GRFABS_FAL_H
  29 #define _GRFABS_FAL_H
  30 /*
  31  * Struct to hold the values for the different video modes
  32  */
  33 struct videl {
  34     u_short video_mode;         /* video mode                       */
  35     u_char  vd_syncmode;        /* Syncronisation                   */
  36     u_short vd_line_wide;       /* Falcon line word distance        */
  37     u_short vd_vert_wrap;       /* Falcon line length               */
  38     u_char  vd_st_res;          /* ST resolution                    */
  39     u_short vd_fal_res;         /* Falcon resolution                */
  40     u_short vd_h_hold_tim;      /* Falcon horizontal hold timer     */
  41     u_short vd_h_bord_beg;      /* Falcon horizontal border begin   */
  42     u_short vd_h_bord_end;      /* Falcon horizontal border end     */
  43     u_short vd_h_dis_beg;       /* Falcon horizontal display begin  */
  44     u_short vd_h_dis_end;       /* Falcon horizontal display end    */
  45     u_short vd_h_ss;            /* Falcon horizontal SS             */
  46     u_short vd_h_fs;            /* Falcon horizontal FS             */
  47     u_short vd_h_hh;            /* Falcon horizontal HH             */
  48     u_short vd_v_freq_tim;      /* Falcon vertical frequency timer  */
  49     u_short vd_v_bord_beg;      /* Falcon vertical border begin     */
  50     u_short vd_v_bord_end;      /* Falcon vertical border end       */
  51     u_short vd_v_dis_beg;       /* Falcon vertical display begin    */
  52     u_short vd_v_dis_end;       /* Falcon vertical display end      */
  53     u_short vd_v_ss;            /* Falcon vertical SS               */
  54     u_short vd_fal_ctrl;        /* Falcon video control             */
  55     u_short vd_fal_mode;        /* Falcon video mode                */
  56 };
  57
  58
  59 /*
  60  * Colormap related macro's
  61  */
  62 #define CM_L2FAL(v) \
  63     (((0x003f0000 & (v)) << 10) | ((0x00003f00 & (v)) << 10) |\
  64       (0x0000003f & (v)) << 2)
  65 #define CM_FAL2L(v) \
  66     (((((0xfc000000 & (v)) >> 10) * 0xff / 0x3f) & 0x00ff0000) |\
  67      ((((0x00fc0000 & (v)) >> 10) * 0xff / 0x3f) & 0x0000ff00) |\
  68        ((0x000000fc & (v)) >>  2) * 0xff / 0x3f)
  69 #define CM_L2ST(v) \
  70     (((0x000e0000 & (v)) >> 9) | ((0x00000e00 & (v)) >> 5) |\
  71       (0x0000000e & (v)) >> 1)
  72 #define CM_ST2L(v) \
  73     (((((0x00000700 & (v)) * 0xff / 0x7) << 8) & 0x00ff0000) |\
  74      ((((0x00000070 & (v)) * 0xff / 0x7) << 4) & 0x0000ff00) |\
  75         (0x00000007 & (v)) * 0xff / 0x7)
  76
  77 void falcon_probe_video(MODES *);
  78 #endif /*  _GRFABS_FAL_H */