/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* controlfb_hw.h: Constants of all sorts for controlfb
*
* Copyright (C) 1998 Daniel Jacobowitz <[email protected]>
*
* 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* The so far unpublished platinumfb.c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 */
{{ 1, 2}}, /* 1152x768, 60Hz */
{{ 0, 1}}, /* 1600x1024, 60Hz */
};
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