linux/drivers/video/valkyriefb.h
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   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 * Ported to 68k Macintosh by David Huggins-Daines <dhd@debian.org>
  13 *
  14 * This program is free software; you can redistribute it and/or
  15 * modify it under the terms of the GNU General Public License
  16 * as published by the Free Software Foundation; either version
  17 * 2 of the License, or (at your option) any later version.
  18 *
  19 * Based directly on:
  20 *
  21 *  controlfb.h: Constants of all sorts for controlfb
  22 *  Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
  23 *
  24 *  pmc-valkyrie.h: Console support for PowerMac "control" display adaptor.
  25 *  Copyright (C) 1997 Paul Mackerras.
  26 *
  27 *  pmc-valkyrie.c: Console support for PowerMac "control" display adaptor.
  28 *  Copyright (C) 1997 Paul Mackerras.
  29 *
  30 * and indirectly from:
  31 *
  32 *  pmc-control.h: Console support for PowerMac "control" display adaptor.
  33 *  Copyright (C) 1997 Paul Mackerras.
  34 *
  35 *  pmc-control.c: Console support for PowerMac "control" display adaptor.
  36 *  Copyright (C) 1996 Paul Mackerras.
  37 *
  38 *  platinumfb.c: Console support for PowerMac "platinum" display adaptor.
  39 *  Copyright (C) 1998 Jon Howell
  40 */
  41
  42#ifdef CONFIG_MAC
  43/* Valkyrie registers are word-aligned on m68k */
  44#define VALKYRIE_REG_PADSIZE    3
  45#else
  46#define VALKYRIE_REG_PADSIZE    7
  47#endif
  48
  49/*
  50 * Structure of the registers for the Valkyrie colormap registers.
  51 */
  52struct cmap_regs {
  53        unsigned char addr;
  54        char pad1[VALKYRIE_REG_PADSIZE];
  55        unsigned char lut;
  56};
  57
  58/*
  59 * Structure of the registers for the "valkyrie" display adaptor.
  60 */
  61
  62struct vpreg {                  /* padded register */
  63        unsigned char r;
  64        char pad[VALKYRIE_REG_PADSIZE];
  65};
  66
  67
  68struct valkyrie_regs {
  69        struct vpreg mode;
  70        struct vpreg depth;
  71        struct vpreg status;
  72        struct vpreg reg3;
  73        struct vpreg intr;
  74        struct vpreg reg5;
  75        struct vpreg intr_enb;
  76        struct vpreg msense;
  77};
  78
  79/*
  80 * Register initialization tables for the valkyrie display.
  81 *
  82 * Dot clock rate is
  83 * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
  84 */
  85struct valkyrie_regvals {
  86        unsigned char mode;
  87        unsigned char clock_params[3];
  88        int     pitch[2];               /* bytes/line, indexed by color_mode */
  89        int     hres;
  90        int     vres;
  91};
  92
  93#ifndef CONFIG_MAC
  94/* Register values for 1024x768, 75Hz mode (17) */
  95/* I'm not sure which mode this is (16 or 17), so I'm defining it as 17,
  96 * since the equivalent mode in controlfb (which I adapted this from) is
  97 * also 17. Just because MacOS can't do this on Valkyrie doesn't mean we
  98 * can't! :)
  99 *
 100 * I was going to use 12, 31, 3, which I found by myself, but instead I'm
 101 * using 11, 28, 3 like controlfb, for consistency's sake.
 102 */
 103
 104static struct valkyrie_regvals valkyrie_reg_init_17 = {
 105    15, 
 106    { 11, 28, 3 },  /* pixel clock = 79.55MHz for V=74.50Hz */
 107    { 1024, 0 },
 108        1024, 768
 109};
 110
 111/* Register values for 1024x768, 72Hz mode (15) */
 112/* This used to be 12, 30, 3 for pixel clock = 78.12MHz for V=72.12Hz, but
 113 * that didn't match MacOS in the same video mode on this chip, and it also
 114 * caused the 15" Apple Studio Display to not work in this mode. While this
 115 * mode still doesn't match MacOS exactly (as far as I can tell), it's a lot
 116 * closer now, and it works with the Apple Studio Display.
 117 *
 118 * Yes, even though MacOS calls it "72Hz", in reality it's about 70Hz.
 119 */
 120static struct valkyrie_regvals valkyrie_reg_init_15 = {
 121    15,
 122    { 12, 29, 3 },  /* pixel clock = 75.52MHz for V=69.71Hz? */
 123                    /* I interpolated the V=69.71 from the vmode 14 and old 15
 124                     * numbers. Is this result correct?
 125                     */
 126    { 1024, 0 },
 127        1024, 768
 128};
 129
 130/* Register values for 1024x768, 60Hz mode (14) */
 131static struct valkyrie_regvals valkyrie_reg_init_14 = {
 132    14,
 133    { 15, 31, 3 },  /* pixel clock = 64.58MHz for V=59.62Hz */
 134    { 1024, 0 },
 135        1024, 768
 136};
 137#endif /* !defined CONFIG_MAC */
 138
 139/* Register values for 832x624, 75Hz mode (13) */
 140static struct valkyrie_regvals valkyrie_reg_init_13 = {
 141    9,
 142    { 23, 42, 3 },  /* pixel clock = 57.07MHz for V=74.27Hz */
 143    { 832, 0 },
 144        832, 624
 145};
 146
 147/* Register values for 800x600, 72Hz mode (11) */
 148static struct valkyrie_regvals valkyrie_reg_init_11 = {
 149    13,
 150    { 17, 27, 3 },  /* pixel clock = 49.63MHz for V=71.66Hz */
 151    { 800, 0 },
 152        800, 600
 153};
 154
 155/* Register values for 800x600, 60Hz mode (10) */
 156static struct valkyrie_regvals valkyrie_reg_init_10 = {
 157    12,
 158    { 25, 32, 3 },  /* pixel clock = 40.0015MHz,
 159                     used to be 20,53,2, pixel clock 41.41MHz for V=59.78Hz */
 160    { 800, 1600 },
 161        800, 600
 162};
 163
 164/* Register values for 640x480, 67Hz mode (6) */
 165static struct valkyrie_regvals valkyrie_reg_init_6 = {
 166    6,
 167    { 14, 27, 2 },  /* pixel clock = 30.13MHz for V=66.43Hz */
 168    { 640, 1280 },
 169        640, 480
 170};
 171
 172/* Register values for 640x480, 60Hz mode (5) */
 173static struct valkyrie_regvals valkyrie_reg_init_5 = {
 174    11,
 175    { 23, 37, 2 },  /* pixel clock = 25.14MHz for V=59.85Hz */
 176    { 640, 1280 },
 177        640, 480
 178};
 179
 180static struct valkyrie_regvals *valkyrie_reg_init[VMODE_MAX] = {
 181        NULL,
 182        NULL,
 183        NULL,
 184        NULL,
 185        &valkyrie_reg_init_5,
 186        &valkyrie_reg_init_6,
 187        NULL,
 188        NULL,
 189        NULL,
 190        &valkyrie_reg_init_10,
 191        &valkyrie_reg_init_11,
 192        NULL,
 193        &valkyrie_reg_init_13,
 194#ifndef CONFIG_MAC
 195        &valkyrie_reg_init_14,
 196        &valkyrie_reg_init_15,
 197        NULL,
 198        &valkyrie_reg_init_17,
 199#endif
 200};
 201
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