drivers/video/valkyriefb.h

   1 /*
   2  * valkyriefb.h: Constants of all sorts for valkyriefb
   3  *
   4  *  Created 8 August 1998 by
   5  *  Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel
   6  *
   7  * Vmode-switching changes and vmode 15/17 modifications created 29 August
   8  * 1998 by Barry K. Nathan <barryn@pobox.com>.
   9  *
  10  * vmode 10 changed by Steven Borley <sjb@salix.demon.co.uk>, 14 mai 2000
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version
  15  * 2 of the License, or (at your option) any later version.
  16  *
  17  * Based directly on:
  18  *
  19  *  controlfb.h: Constants of all sorts for controlfb
  20  *  Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
  21  *
  22  *  pmc-valkyrie.h: Console support for PowerMac "control" display adaptor.
  23  *  Copyright (C) 1997 Paul Mackerras.
  24  *
  25  *  pmc-valkyrie.c: Console support for PowerMac "control" display adaptor.
  26  *  Copyright (C) 1997 Paul Mackerras.
  27  *
  28  * and indirectly from:
  29  *
  30  *  pmc-control.h: Console support for PowerMac "control" display adaptor.
  31  *  Copyright (C) 1997 Paul Mackerras.
  32  *
  33  *  pmc-control.c: Console support for PowerMac "control" display adaptor.
  34  *  Copyright (C) 1996 Paul Mackerras.
  35  *
  36  *  platinumfb.c: Console support for PowerMac "platinum" display adaptor.
  37  *  Copyright (C) 1998 Jon Howell
  38  */
  39
  40 /*
  41  * Structure of the registers for the Valkyrie colormap registers.
  42  */
  43 struct cmap_regs {
  44         unsigned char addr;
  45         char pad1[7];
  46         unsigned char lut;
  47 };
  48
  49 /*
  50  * Structure of the registers for the "valkyrie" display adaptor.
  51  */
  52
  53 struct vpreg {                  /* padded register */
  54         unsigned char r;
  55         char pad[7];
  56 };
  57
  58
  59 struct valkyrie_regs {
  60         struct vpreg mode;
  61         struct vpreg depth;
  62         struct vpreg status;
  63         struct vpreg reg3;
  64         struct vpreg intr;
  65         struct vpreg reg5;
  66         struct vpreg intr_enb;
  67         struct vpreg msense;
  68 };
  69
  70 /*
  71  * Register initialization tables for the valkyrie display.
  72  *
  73  * Dot clock rate is
  74  * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
  75  */
  76 struct valkyrie_regvals {
  77         unsigned char mode;
  78         unsigned char clock_params[3];
  79         int     pitch[2];               /* bytes/line, indexed by color_mode */
  80         int     hres;
  81         int     vres;
  82 };
  83
  84 /* Register values for 1024x768, 75Hz mode (17) */
  85 /* I'm not sure which mode this is (16 or 17), so I'm defining it as 17,
  86  * since the equivalent mode in controlfb (which I adapted this from) is
  87  * also 17. Just because MacOS can't do this on Valkyrie doesn't mean we
  88  * can't! :)
  89  *
  90  * I was going to use 12, 31, 3, which I found by myself, but instead I'm
  91  * using 11, 28, 3 like controlfb, for consistency's sake.
  92  */
  93
  94 static struct valkyrie_regvals valkyrie_reg_init_17 = {
  95     15,
  96     { 11, 28, 3 },  /* pixel clock = 79.55MHz for V=74.50Hz */
  97     { 1024, 0 },
  98         1024, 768
  99 };
 100
 101 /* Register values for 1024x768, 72Hz mode (15) */
 102 /* This used to be 12, 30, 3 for pixel clock = 78.12MHz for V=72.12Hz, but
 103  * that didn't match MacOS in the same video mode on this chip, and it also
 104  * caused the 15" Apple Studio Display to not work in this mode. While this
 105  * mode still doesn't match MacOS exactly (as far as I can tell), it's a lot
 106  * closer now, and it works with the Apple Studio Display.
 107  *
 108  * Yes, even though MacOS calls it "72Hz", in reality it's about 70Hz.
 109  */
 110 static struct valkyrie_regvals valkyrie_reg_init_15 = {
 111     15,
 112     { 12, 29, 3 },  /* pixel clock = 75.52MHz for V=69.71Hz? */
 113                     /* I interpolated the V=69.71 from the vmode 14 and old 15
 114                      * numbers. Is this result correct?
 115                      */
 116     { 1024, 0 },
 117         1024, 768
 118 };
 119
 120 /* Register values for 1024x768, 60Hz mode (14) */
 121 static struct valkyrie_regvals valkyrie_reg_init_14 = {
 122     14,
 123     { 15, 31, 3 },  /* pixel clock = 64.58MHz for V=59.62Hz */
 124     { 1024, 0 },
 125         1024, 768
 126 };
 127
 128 /* Register values for 832x624, 75Hz mode (13) */
 129 static struct valkyrie_regvals valkyrie_reg_init_13 = {
 130     9,
 131     { 23, 42, 3 },  /* pixel clock = 57.07MHz for V=74.27Hz */
 132     { 832, 0 },
 133         832, 624
 134 };
 135
 136 /* Register values for 800x600, 72Hz mode (11) */
 137 static struct valkyrie_regvals valkyrie_reg_init_11 = {
 138     13,
 139     { 17, 27, 3 },  /* pixel clock = 49.63MHz for V=71.66Hz */
 140     { 800, 0 },
 141         800, 600
 142 };
 143
 144 /* Register values for 800x600, 60Hz mode (10) */
 145 static struct valkyrie_regvals valkyrie_reg_init_10 = {
 146     12,
 147     { 25, 32, 3 },  /* pixel clock = 40.0015MHz,
 148                      used to be 20,53,2, pixel clock 41.41MHz for V=59.78Hz */
 149     { 800, 1600 },
 150         800, 600
 151 };
 152
 153 /* Register values for 640x480, 67Hz mode (6) */
 154 static struct valkyrie_regvals valkyrie_reg_init_6 = {
 155     6,
 156     { 14, 27, 2 },  /* pixel clock = 30.13MHz for V=66.43Hz */
 157     { 640, 1280 },
 158         640, 480
 159 };
 160
 161 /* Register values for 640x480, 60Hz mode (5) */
 162 static struct valkyrie_regvals valkyrie_reg_init_5 = {
 163     11,
 164     { 23, 37, 2 },  /* pixel clock = 25.14MHz for V=59.85Hz */
 165     { 640, 1280 },
 166         640, 480
 167 };
 168
 169 static struct valkyrie_regvals *valkyrie_reg_init[VMODE_MAX] = {
 170         NULL,
 171         NULL,
 172         NULL,
 173         NULL,
 174         &valkyrie_reg_init_5,
 175         &valkyrie_reg_init_6,
 176         NULL,
 177         NULL,
 178         NULL,
 179         &valkyrie_reg_init_10,
 180         &valkyrie_reg_init_11,
 181         NULL,
 182         &valkyrie_reg_init_13,
 183         &valkyrie_reg_init_14,
 184         &valkyrie_reg_init_15,
 185         NULL,
 186         &valkyrie_reg_init_17,
 187         NULL,
 188         NULL,
 189         NULL
 190 };