144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* controlfb_hw.h: Constants of all sorts for controlfb
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*
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* Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
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*
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* Based on an awful lot of code, including:
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*
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* control.c: Console support for PowerMac "control" display adaptor.
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* Copyright (C) 1996 Paul Mackerras.
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*
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* The so far unpublished platinumfb.c
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* Copyright (C) 1998 Jon Howell
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*/
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/*
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* Structure of the registers for the RADACAL colormap device.
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*/
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struct cmap_regs {
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unsigned char addr; /* index for both cmap and misc registers */
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char pad1[15];
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unsigned char crsr; /* cursor palette */
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char pad2[15];
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unsigned char dat; /* RADACAL misc register data */
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char pad3[15];
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unsigned char lut; /* cmap data */
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char pad4[15];
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};
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/*
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* Structure of the registers for the "control" display adaptor.
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*/
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#define PAD(x) char x[12]
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struct preg { /* padded register */
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unsigned r;
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char pad[12];
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};
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struct control_regs {
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struct preg vcount; /* vertical counter */
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/* Vertical parameters are in units of 1/2 scan line */
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struct preg vswin; /* between vsblank and vssync */
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struct preg vsblank; /* vert start blank */
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struct preg veblank; /* vert end blank (display start) */
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struct preg vewin; /* between vesync and veblank */
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struct preg vesync; /* vert end sync */
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struct preg vssync; /* vert start sync */
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struct preg vperiod; /* vert period */
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struct preg piped; /* pipe delay hardware cursor */
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/* Horizontal params are in units of 2 pixels */
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struct preg hperiod; /* horiz period - 2 */
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struct preg hsblank; /* horiz start blank */
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struct preg heblank; /* horiz end blank */
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struct preg hesync; /* horiz end sync */
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struct preg hssync; /* horiz start sync */
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struct preg heq; /* half horiz sync len */
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struct preg hlfln; /* half horiz period */
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struct preg hserr; /* horiz period - horiz sync len */
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struct preg cnttst;
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struct preg ctrl; /* display control */
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struct preg start_addr; /* start address: 5 lsbs zero */
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struct preg pitch; /* addrs diff between scan lines */
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struct preg mon_sense; /* monitor sense bits */
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struct preg vram_attr; /* enable vram banks */
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struct preg mode;
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struct preg rfrcnt; /* refresh count */
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struct preg intr_ena; /* interrupt enable */
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struct preg intr_stat; /* interrupt status */
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struct preg res[5];
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};
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struct control_regints {
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/* Vertical parameters are in units of 1/2 scan line */
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unsigned vswin; /* between vsblank and vssync */
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unsigned vsblank; /* vert start blank */
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unsigned veblank; /* vert end blank (display start) */
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unsigned vewin; /* between vesync and veblank */
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unsigned vesync; /* vert end sync */
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unsigned vssync; /* vert start sync */
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unsigned vperiod; /* vert period */
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unsigned piped; /* pipe delay hardware cursor */
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/* Horizontal params are in units of 2 pixels */
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/* Except, apparently, for hres > 1024 (or == 1280?) */
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unsigned hperiod; /* horiz period - 2 */
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unsigned hsblank; /* horiz start blank */
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unsigned heblank; /* horiz end blank */
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unsigned hesync; /* horiz end sync */
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unsigned hssync; /* horiz start sync */
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unsigned heq; /* half horiz sync len */
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unsigned hlfln; /* half horiz period */
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unsigned hserr; /* horiz period - horiz sync len */
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};
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/*
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* Dot clock rate is
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* 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
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*/
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struct control_regvals {
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unsigned regs[16]; /* for vswin .. hserr */
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unsigned char mode;
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unsigned char radacal_ctrl;
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unsigned char clock_params[3];
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};
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#define CTRLFB_OFF 16 /* position of pixel 0 in frame buffer */
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/*
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* Best cmode supported by control
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*/
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struct max_cmodes {
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int m[2]; /* 0: 2MB vram, 1: 4MB vram */
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};
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/*
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* Video modes supported by macmodes.c
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*/
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static struct max_cmodes control_mac_modes[] = {
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{{-1,-1}}, /* 512x384, 60Hz interlaced (NTSC) */
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{{-1,-1}}, /* 512x384, 60Hz */
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{{-1,-1}}, /* 640x480, 50Hz interlaced (PAL) */
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{{-1,-1}}, /* 640x480, 60Hz interlaced (NTSC) */
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{{ 2, 2}}, /* 640x480, 60Hz (VGA) */
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{{ 2, 2}}, /* 640x480, 67Hz */
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{{-1,-1}}, /* 640x870, 75Hz (portrait) */
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{{-1,-1}}, /* 768x576, 50Hz (PAL full frame) */
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{{ 2, 2}}, /* 800x600, 56Hz */
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{{ 2, 2}}, /* 800x600, 60Hz */
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{{ 2, 2}}, /* 800x600, 72Hz */
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{{ 2, 2}}, /* 800x600, 75Hz */
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{{ 1, 2}}, /* 832x624, 75Hz */
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{{ 1, 2}}, /* 1024x768, 60Hz */
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{{ 1, 2}}, /* 1024x768, 70Hz (or 72Hz?) */
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{{ 1, 2}}, /* 1024x768, 75Hz (VESA) */
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{{ 1, 2}}, /* 1024x768, 75Hz */
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{{ 1, 2}}, /* 1152x870, 75Hz */
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{{ 0, 1}}, /* 1280x960, 75Hz */
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{{ 0, 1}}, /* 1280x1024, 75Hz */
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{{ 1, 2}}, /* 1152x768, 60Hz */
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{{ 0, 1}}, /* 1600x1024, 60Hz */
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};
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