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1/*
2 * valkyriefb.h: Constants of all sorts for valkyriefb
3 *
4 * Created 8 August 1998 by
5 * Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel
6 *
7 * Vmode-switching changes and vmode 15/17 modifications created 29 August
8 * 1998 by Barry K. Nathan <barryn@pobox.com>.
9 *
10 * vmode 10 changed by Steven Borley <sjb@salix.demon.co.uk>, 14 mai 2000
11 *
12 * Ported to 68k Macintosh by David Huggins-Daines <dhd@debian.org>
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 *
19 * Based directly on:
20 *
21 * controlfb.h: Constants of all sorts for controlfb
22 * Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
23 *
24 * pmc-valkyrie.h: Console support for PowerMac "control" display adaptor.
25 * Copyright (C) 1997 Paul Mackerras.
26 *
27 * pmc-valkyrie.c: Console support for PowerMac "control" display adaptor.
28 * Copyright (C) 1997 Paul Mackerras.
29 *
30 * and indirectly from:
31 *
32 * pmc-control.h: Console support for PowerMac "control" display adaptor.
33 * Copyright (C) 1997 Paul Mackerras.
34 *
35 * pmc-control.c: Console support for PowerMac "control" display adaptor.
36 * Copyright (C) 1996 Paul Mackerras.
37 *
38 * platinumfb.c: Console support for PowerMac "platinum" display adaptor.
39 * Copyright (C) 1998 Jon Howell
40 */
41
42#ifdef CONFIG_MAC
43/* Valkyrie registers are word-aligned on m68k */
44#define VALKYRIE_REG_PADSIZE 3
45#else
46#define VALKYRIE_REG_PADSIZE 7
47#endif
48
49/*
50 * Structure of the registers for the Valkyrie colormap registers.
51 */
52struct cmap_regs {
53 unsigned char addr;
54 char pad1[VALKYRIE_REG_PADSIZE];
55 unsigned char lut;
56};
57
58/*
59 * Structure of the registers for the "valkyrie" display adaptor.
60 */
61
62struct vpreg { /* padded register */
63 unsigned char r;
64 char pad[VALKYRIE_REG_PADSIZE];
65};
66
67
68struct valkyrie_regs {
69 struct vpreg mode;
70 struct vpreg depth;
71 struct vpreg status;
72 struct vpreg reg3;
73 struct vpreg intr;
74 struct vpreg reg5;
75 struct vpreg intr_enb;
76 struct vpreg msense;
77};
78
79/*
80 * Register initialization tables for the valkyrie display.
81 *
82 * Dot clock rate is
83 * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
84 */
85struct valkyrie_regvals {
86 unsigned char mode;
87 unsigned char clock_params[3];
88 int pitch[2]; /* bytes/line, indexed by color_mode */
89 int hres;
90 int vres;
91};
92
93#ifndef CONFIG_MAC
94/* Register values for 1024x768, 75Hz mode (17) */
95/* I'm not sure which mode this is (16 or 17), so I'm defining it as 17,
96 * since the equivalent mode in controlfb (which I adapted this from) is
97 * also 17. Just because MacOS can't do this on Valkyrie doesn't mean we
98 * can't! :)
99 *
100 * I was going to use 12, 31, 3, which I found by myself, but instead I'm
101 * using 11, 28, 3 like controlfb, for consistency's sake.
102 */
103
104static struct valkyrie_regvals valkyrie_reg_init_17 = {
105 15,
106 { 11, 28, 3 }, /* pixel clock = 79.55MHz for V=74.50Hz */
107 { 1024, 0 },
108 1024, 768
109};
110
111/* Register values for 1024x768, 72Hz mode (15) */
112/* This used to be 12, 30, 3 for pixel clock = 78.12MHz for V=72.12Hz, but
113 * that didn't match MacOS in the same video mode on this chip, and it also
114 * caused the 15" Apple Studio Display to not work in this mode. While this
115 * mode still doesn't match MacOS exactly (as far as I can tell), it's a lot
116 * closer now, and it works with the Apple Studio Display.
117 *
118 * Yes, even though MacOS calls it "72Hz", in reality it's about 70Hz.
119 */
120static struct valkyrie_regvals valkyrie_reg_init_15 = {
121 15,
122 { 12, 29, 3 }, /* pixel clock = 75.52MHz for V=69.71Hz? */
123 /* I interpolated the V=69.71 from the vmode 14 and old 15
124 * numbers. Is this result correct?
125 */
126 { 1024, 0 },
127 1024, 768
128};
129
130/* Register values for 1024x768, 60Hz mode (14) */
131static struct valkyrie_regvals valkyrie_reg_init_14 = {
132 14,
133 { 15, 31, 3 }, /* pixel clock = 64.58MHz for V=59.62Hz */
134 { 1024, 0 },
135 1024, 768
136};
137
138/* Register values for 800x600, 72Hz mode (11) */
139static struct valkyrie_regvals valkyrie_reg_init_11 = {
140 13,
141 { 17, 27, 3 }, /* pixel clock = 49.63MHz for V=71.66Hz */
142 { 800, 0 },
143 800, 600
144};
145#endif /* CONFIG_MAC */
146
147/* Register values for 832x624, 75Hz mode (13) */
148static struct valkyrie_regvals valkyrie_reg_init_13 = {
149 9,
150 { 23, 42, 3 }, /* pixel clock = 57.07MHz for V=74.27Hz */
151 { 832, 0 },
152 832, 624
153};
154
155/* Register values for 800x600, 60Hz mode (10) */
156static struct valkyrie_regvals valkyrie_reg_init_10 = {
157 12,
158 { 25, 32, 3 }, /* pixel clock = 40.0015MHz,
159 used to be 20,53,2, pixel clock 41.41MHz for V=59.78Hz */
160 { 800, 1600 },
161 800, 600
162};
163
164/* Register values for 640x480, 67Hz mode (6) */
165static struct valkyrie_regvals valkyrie_reg_init_6 = {
166 6,
167 { 14, 27, 2 }, /* pixel clock = 30.13MHz for V=66.43Hz */
168 { 640, 1280 },
169 640, 480
170};
171
172/* Register values for 640x480, 60Hz mode (5) */
173static struct valkyrie_regvals valkyrie_reg_init_5 = {
174 11,
175 { 23, 37, 2 }, /* pixel clock = 25.14MHz for V=59.85Hz */
176 { 640, 1280 },
177 640, 480
178};
179
180static struct valkyrie_regvals *valkyrie_reg_init[VMODE_MAX] = {
181 NULL,
182 NULL,
183 NULL,
184 NULL,
185 &valkyrie_reg_init_5,
186 &valkyrie_reg_init_6,
187 NULL,
188 NULL,
189 NULL,
190 &valkyrie_reg_init_10,
191#ifdef CONFIG_MAC
192 NULL,
193 NULL,
194 &valkyrie_reg_init_13,
195 NULL,
196 NULL,
197 NULL,
198 NULL,
199#else
200 &valkyrie_reg_init_11,
201 NULL,
202 &valkyrie_reg_init_13,
203 &valkyrie_reg_init_14,
204 &valkyrie_reg_init_15,
205 NULL,
206 &valkyrie_reg_init_17,
207#endif
208 NULL,
209 NULL,
210 NULL
211};
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 17:38:22 -0500