drivers/video/fbdev/controlfb.h

   1 /*
   2  * controlfb_hw.h: Constants of all sorts for controlfb
   3  *
   4  * Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  *
  11  * Based on an awful lot of code, including:
  12  *
  13  * control.c: Console support for PowerMac "control" display adaptor.
  14  * Copyright (C) 1996 Paul Mackerras.
  15  *
  16  * The so far unpublished platinumfb.c
  17  * Copyright (C) 1998 Jon Howell
  18  */
  19
  20 /*
  21  * Structure of the registers for the RADACAL colormap device.
  22  */
  23 struct cmap_regs {
  24         unsigned char addr;     /* index for both cmap and misc registers */
  25         char pad1[15];
  26         unsigned char crsr;     /* cursor palette */
  27         char pad2[15];
  28         unsigned char dat;      /* RADACAL misc register data */
  29         char pad3[15];
  30         unsigned char lut;      /* cmap data */
  31         char pad4[15];
  32 };
  33
  34 /*
  35  * Structure of the registers for the "control" display adaptor.
  36  */
  37 #define PAD(x)  char x[12]
  38
  39 struct preg {                   /* padded register */
  40         unsigned r;
  41         char pad[12];
  42 };
  43
  44 struct control_regs {
  45         struct preg vcount;     /* vertical counter */
  46         /* Vertical parameters are in units of 1/2 scan line */
  47         struct preg vswin;      /* between vsblank and vssync */
  48         struct preg vsblank;    /* vert start blank */
  49         struct preg veblank;    /* vert end blank (display start) */
  50         struct preg vewin;      /* between vesync and veblank */
  51         struct preg vesync;     /* vert end sync */
  52         struct preg vssync;     /* vert start sync */
  53         struct preg vperiod;    /* vert period */
  54         struct preg piped;      /* pipe delay hardware cursor */
  55         /* Horizontal params are in units of 2 pixels */
  56         struct preg hperiod;    /* horiz period - 2 */
  57         struct preg hsblank;    /* horiz start blank */
  58         struct preg heblank;    /* horiz end blank */
  59         struct preg hesync;     /* horiz end sync */
  60         struct preg hssync;     /* horiz start sync */
  61         struct preg heq;        /* half horiz sync len */
  62         struct preg hlfln;      /* half horiz period */
  63         struct preg hserr;      /* horiz period - horiz sync len */
  64         struct preg cnttst;
  65         struct preg ctrl;       /* display control */
  66         struct preg start_addr; /* start address: 5 lsbs zero */
  67         struct preg pitch;      /* addrs diff between scan lines */
  68         struct preg mon_sense;  /* monitor sense bits */
  69         struct preg vram_attr;  /* enable vram banks */
  70         struct preg mode;
  71         struct preg rfrcnt;     /* refresh count */
  72         struct preg intr_ena;   /* interrupt enable */
  73         struct preg intr_stat;  /* interrupt status */
  74         struct preg res[5];
  75 };
  76
  77 struct control_regints {
  78         /* Vertical parameters are in units of 1/2 scan line */
  79         unsigned vswin; /* between vsblank and vssync */
  80         unsigned vsblank;       /* vert start blank */
  81         unsigned veblank;       /* vert end blank (display start) */
  82         unsigned vewin; /* between vesync and veblank */
  83         unsigned vesync;        /* vert end sync */
  84         unsigned vssync;        /* vert start sync */
  85         unsigned vperiod;       /* vert period */
  86         unsigned piped;         /* pipe delay hardware cursor */
  87         /* Horizontal params are in units of 2 pixels */
  88         /* Except, apparently, for hres > 1024 (or == 1280?) */
  89         unsigned hperiod;       /* horiz period - 2 */
  90         unsigned hsblank;       /* horiz start blank */
  91         unsigned heblank;       /* horiz end blank */
  92         unsigned hesync;        /* horiz end sync */
  93         unsigned hssync;        /* horiz start sync */
  94         unsigned heq;           /* half horiz sync len */
  95         unsigned hlfln;         /* half horiz period */
  96         unsigned hserr;         /* horiz period - horiz sync len */
  97 };
  98
  99 /*
 100  * Dot clock rate is
 101  * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
 102  */
 103 struct control_regvals {
 104         unsigned regs[16];              /* for vswin .. hserr */
 105         unsigned char mode;
 106         unsigned char radacal_ctrl;
 107         unsigned char clock_params[3];
 108 };
 109
 110 #define CTRLFB_OFF 16   /* position of pixel 0 in frame buffer */
 111
 112
 113 /*
 114  * Best cmode supported by control
 115  */
 116 struct max_cmodes {
 117         int m[2];       /* 0: 2MB vram, 1: 4MB vram */
 118 };
 119
 120 /*
 121  * Video modes supported by macmodes.c
 122  */
 123 static struct max_cmodes control_mac_modes[] = {
 124         {{-1,-1}},      /* 512x384, 60Hz interlaced (NTSC) */
 125         {{-1,-1}},      /* 512x384, 60Hz */
 126         {{-1,-1}},      /* 640x480, 50Hz interlaced (PAL) */
 127         {{-1,-1}},      /* 640x480, 60Hz interlaced (NTSC) */
 128         {{ 2, 2}},      /* 640x480, 60Hz (VGA) */
 129         {{ 2, 2}},      /* 640x480, 67Hz */
 130         {{-1,-1}},      /* 640x870, 75Hz (portrait) */
 131         {{-1,-1}},      /* 768x576, 50Hz (PAL full frame) */
 132         {{ 2, 2}},      /* 800x600, 56Hz */
 133         {{ 2, 2}},      /* 800x600, 60Hz */
 134         {{ 2, 2}},      /* 800x600, 72Hz */
 135         {{ 2, 2}},      /* 800x600, 75Hz */
 136         {{ 1, 2}},      /* 832x624, 75Hz */
 137         {{ 1, 2}},      /* 1024x768, 60Hz */
 138         {{ 1, 2}},      /* 1024x768, 70Hz (or 72Hz?) */
 139         {{ 1, 2}},      /* 1024x768, 75Hz (VESA) */
 140         {{ 1, 2}},      /* 1024x768, 75Hz */
 141         {{ 1, 2}},      /* 1152x870, 75Hz */
 142         {{ 0, 1}},      /* 1280x960, 75Hz */
 143         {{ 0, 1}},      /* 1280x1024, 75Hz */
 144         {{ 1, 2}},      /* 1152x768, 60Hz */
 145         {{ 0, 1}},      /* 1600x1024, 60Hz */
 146 };
 147