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/*

 * valkyriefb.h: Constants of all sorts for valkyriefb

 *

 *  Created 8 August 1998 by

 *  Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel

 *

 * Vmode-switching changes and vmode 15/17 modifications created 29 August

 * 1998 by Barry K. Nathan <barryn@pobox.com>.

 *

 * vmode 10 changed by Steven Borley <sjb@salix.demon.co.uk>, 14 mai 2000

 *

 * Ported to 68k Macintosh by David Huggins-Daines <dhd@debian.org>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 *

 * Based directly on:

 *

 *  controlfb.h: Constants of all sorts for controlfb

 *  Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>

 *

 *  pmc-valkyrie.h: Console support for PowerMac "control" display adaptor.

 *  Copyright (C) 1997 Paul Mackerras.

 *

 *  pmc-valkyrie.c: Console support for PowerMac "control" display adaptor.

 *  Copyright (C) 1997 Paul Mackerras.

 *

 * and indirectly from:

 *

 *  pmc-control.h: Console support for PowerMac "control" display adaptor.

 *  Copyright (C) 1997 Paul Mackerras.

 *

 *  pmc-control.c: Console support for PowerMac "control" display adaptor.

 *  Copyright (C) 1996 Paul Mackerras.

 *

 *  platinumfb.c: Console support for PowerMac "platinum" display adaptor.

 *  Copyright (C) 1998 Jon Howell

 */

#ifdef CONFIG_MAC

/* Valkyrie registers are word-aligned on m68k */

#define VALKYRIE_REG_PADSIZE    3

#else

#define VALKYRIE_REG_PADSIZE    7

#endif

/*

 * Structure of the registers for the Valkyrie colormap registers.

 */

struct cmap_regs {

        unsigned char addr;

        char pad1[VALKYRIE_REG_PADSIZE];

        unsigned char lut;

};

/*

 * Structure of the registers for the "valkyrie" display adaptor.

 */

struct vpreg {                  /* padded register */

        unsigned char r;

        char pad[VALKYRIE_REG_PADSIZE];

};

struct valkyrie_regs {

        struct vpreg mode;

        struct vpreg depth;

        struct vpreg status;

        struct vpreg reg3;

        struct vpreg intr;

        struct vpreg reg5;

        struct vpreg intr_enb;

        struct vpreg msense;

};

/*

 * Register initialization tables for the valkyrie display.

 *

 * Dot clock rate is

 * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].

 */

struct valkyrie_regvals {

        unsigned char mode;

        unsigned char clock_params[3];

        int     pitch[2];               /* bytes/line, indexed by color_mode */

        int     hres;

        int     vres;

};

#ifndef CONFIG_MAC

/* Register values for 1024x768, 75Hz mode (17) */

/* I'm not sure which mode this is (16 or 17), so I'm defining it as 17,

 * since the equivalent mode in controlfb (which I adapted this from) is

 * also 17. Just because MacOS can't do this on Valkyrie doesn't mean we

 * can't! :)

 *

 * I was going to use 12, 31, 3, which I found by myself, but instead I'm

 * using 11, 28, 3 like controlfb, for consistency's sake.

 */

static struct valkyrie_regvals valkyrie_reg_init_17 = {

    15,

    { 11, 28, 3 },  /* pixel clock = 79.55MHz for V=74.50Hz */

    { 1024, 0 },

        1024, 768

};

/* Register values for 1024x768, 72Hz mode (15) */

/* This used to be 12, 30, 3 for pixel clock = 78.12MHz for V=72.12Hz, but

 * that didn't match MacOS in the same video mode on this chip, and it also

 * caused the 15" Apple Studio Display to not work in this mode. While this

 * mode still doesn't match MacOS exactly (as far as I can tell), it's a lot

 * closer now, and it works with the Apple Studio Display.

 *

 * Yes, even though MacOS calls it "72Hz", in reality it's about 70Hz.

 */

static struct valkyrie_regvals valkyrie_reg_init_15 = {

    15,

    { 12, 29, 3 },  /* pixel clock = 75.52MHz for V=69.71Hz? */

                    /* I interpolated the V=69.71 from the vmode 14 and old 15

                     * numbers. Is this result correct?

                     */

    { 1024, 0 },

        1024, 768

};

/* Register values for 1024x768, 60Hz mode (14) */

static struct valkyrie_regvals valkyrie_reg_init_14 = {

    14,

    { 15, 31, 3 },  /* pixel clock = 64.58MHz for V=59.62Hz */

    { 1024, 0 },

        1024, 768

};

/* Register values for 800x600, 72Hz mode (11) */

static struct valkyrie_regvals valkyrie_reg_init_11 = {

    13,

    { 17, 27, 3 },  /* pixel clock = 49.63MHz for V=71.66Hz */

    { 800, 0 },

        800, 600

};

#endif /* CONFIG_MAC */

/* Register values for 832x624, 75Hz mode (13) */

static struct valkyrie_regvals valkyrie_reg_init_13 = {

    9,

    { 23, 42, 3 },  /* pixel clock = 57.07MHz for V=74.27Hz */

    { 832, 0 },

        832, 624

};

/* Register values for 800x600, 60Hz mode (10) */

static struct valkyrie_regvals valkyrie_reg_init_10 = {

    12,

    { 25, 32, 3 },  /* pixel clock = 40.0015MHz,

                     used to be 20,53,2, pixel clock 41.41MHz for V=59.78Hz */

    { 800, 1600 },

        800, 600

};

/* Register values for 640x480, 67Hz mode (6) */

static struct valkyrie_regvals valkyrie_reg_init_6 = {

    6,

    { 14, 27, 2 },  /* pixel clock = 30.13MHz for V=66.43Hz */

    { 640, 1280 },

        640, 480

};

/* Register values for 640x480, 60Hz mode (5) */

static struct valkyrie_regvals valkyrie_reg_init_5 = {

    11,

    { 23, 37, 2 },  /* pixel clock = 25.14MHz for V=59.85Hz */

    { 640, 1280 },

        640, 480

};

static struct valkyrie_regvals *valkyrie_reg_init[VMODE_MAX] = {

        NULL,

        NULL,

        NULL,

        NULL,

        &valkyrie_reg_init_5,

        &valkyrie_reg_init_6,

        NULL,

        NULL,

        NULL,

        &valkyrie_reg_init_10,

#ifdef CONFIG_MAC

        NULL,

        NULL,

        &valkyrie_reg_init_13,

        NULL,

        NULL,

        NULL,

        NULL,

#else

        &valkyrie_reg_init_11,

        NULL,

        &valkyrie_reg_init_13,

        &valkyrie_reg_init_14,

        &valkyrie_reg_init_15,

        NULL,

        &valkyrie_reg_init_17,

#endif

        NULL,

        NULL,

        NULL

};