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/*

 * controlfb_hw.h: Constants of all sorts for controlfb

 *

 * Copyright (C) 1998 Daniel Jacobowitz <dan@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 on an awful lot of code, including:

 *

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

 * Copyright (C) 1996 Paul Mackerras.

 *

 * The so far unpublished platinumfb.c

 * Copyright (C) 1998 Jon Howell

 */

/*

 * Structure of the registers for the RADACAL colormap device.

 */

struct cmap_regs {

        unsigned char addr;     /* index for both cmap and misc registers */

        char pad1[15];

        unsigned char crsr;     /* cursor palette */

        char pad2[15];

        unsigned char dat;      /* RADACAL misc register data */

        char pad3[15];

        unsigned char lut;      /* cmap data */

        char pad4[15];

};

/*

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

 */

#define PAD(x)  char x[12]

struct preg {                   /* padded register */

        unsigned r;

        char pad[12];

};

struct control_regs {

        struct preg vcount;     /* vertical counter */

        /* Vertical parameters are in units of 1/2 scan line */

        struct preg vswin;      /* between vsblank and vssync */

        struct preg vsblank;    /* vert start blank */

        struct preg veblank;    /* vert end blank (display start) */

        struct preg vewin;      /* between vesync and veblank */

        struct preg vesync;     /* vert end sync */

        struct preg vssync;     /* vert start sync */

        struct preg vperiod;    /* vert period */

        struct preg piped;      /* pipe delay hardware cursor */

        /* Horizontal params are in units of 2 pixels */

        struct preg hperiod;    /* horiz period - 2 */

        struct preg hsblank;    /* horiz start blank */

        struct preg heblank;    /* horiz end blank */

        struct preg hesync;     /* horiz end sync */

        struct preg hssync;     /* horiz start sync */

        struct preg heq;        /* half horiz sync len */

        struct preg hlfln;      /* half horiz period */

        struct preg hserr;      /* horiz period - horiz sync len */

        struct preg cnttst;

        struct preg ctrl;       /* display control */

        struct preg start_addr; /* start address: 5 lsbs zero */

        struct preg pitch;      /* addrs diff between scan lines */

        struct preg mon_sense;  /* monitor sense bits */

        struct preg vram_attr;  /* enable vram banks */

        struct preg mode;

        struct preg rfrcnt;     /* refresh count */

        struct preg intr_ena;   /* interrupt enable */

        struct preg intr_stat;  /* interrupt status */

        struct preg res[5];

};

struct control_regints {

        /* Vertical parameters are in units of 1/2 scan line */

        unsigned vswin; /* between vsblank and vssync */

        unsigned vsblank;       /* vert start blank */

        unsigned veblank;       /* vert end blank (display start) */

        unsigned vewin; /* between vesync and veblank */

        unsigned vesync;        /* vert end sync */

        unsigned vssync;        /* vert start sync */

        unsigned vperiod;       /* vert period */

        unsigned piped;         /* pipe delay hardware cursor */

        /* Horizontal params are in units of 2 pixels */

        /* Except, apparently, for hres > 1024 (or == 1280?) */

        unsigned hperiod;       /* horiz period - 2 */

        unsigned hsblank;       /* horiz start blank */

        unsigned heblank;       /* horiz end blank */

        unsigned hesync;        /* horiz end sync */

        unsigned hssync;        /* horiz start sync */

        unsigned heq;           /* half horiz sync len */

        unsigned hlfln;         /* half horiz period */

        unsigned hserr;         /* horiz period - horiz sync len */

};

/*

 * Dot clock rate is

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

 */

struct control_regvals {

        unsigned regs[16];              /* for vswin .. hserr */

        unsigned char mode;

        unsigned char radacal_ctrl;

        unsigned char clock_params[3];

};

#define CTRLFB_OFF 16   /* position of pixel 0 in frame buffer */

/*

 * Best cmode supported by control

 */

struct max_cmodes {

        int m[2];       /* 0: 2MB vram, 1: 4MB vram */

};

/*

 * Video modes supported by macmodes.c

 */

static struct max_cmodes control_mac_modes[] = {

        {{-1,-1}},      /* 512x384, 60Hz interlaced (NTSC) */

        {{-1,-1}},      /* 512x384, 60Hz */

        {{-1,-1}},      /* 640x480, 50Hz interlaced (PAL) */

        {{-1,-1}},      /* 640x480, 60Hz interlaced (NTSC) */

        {{ 2, 2}},      /* 640x480, 60Hz (VGA) */

        {{ 2, 2}},      /* 640x480, 67Hz */

        {{-1,-1}},      /* 640x870, 75Hz (portrait) */

        {{-1,-1}},      /* 768x576, 50Hz (PAL full frame) */

        {{ 2, 2}},      /* 800x600, 56Hz */

        {{ 2, 2}},      /* 800x600, 60Hz */

        {{ 2, 2}},      /* 800x600, 72Hz */

        {{ 2, 2}},      /* 800x600, 75Hz */

        {{ 1, 2}},      /* 832x624, 75Hz */

        {{ 1, 2}},      /* 1024x768, 60Hz */

        {{ 1, 2}},      /* 1024x768, 70Hz (or 72Hz?) */

        {{ 1, 2}},      /* 1024x768, 75Hz (VESA) */

        {{ 1, 2}},      /* 1024x768, 75Hz */

        {{ 1, 2}},      /* 1152x870, 75Hz */

        {{ 0, 1}},       /* 1280x960, 75Hz */

        {{ 0, 1}},       /* 1280x1024, 75Hz */

};