1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * valkyriefb.h: Constants of all sorts for valkyriefb
4 *
5 * Created 8 August 1998 by
6 * Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel
7 *
8 * Vmode-switching changes and vmode 15/17 modifications created 29 August
9 * 1998 by Barry K. Nathan <barryn@pobox.com>.
10 *
11 * vmode 10 changed by Steven Borley <sjb@salix.demon.co.uk>, 14 mai 2000
12 *
13 * Ported to 68k Macintosh by David Huggins-Daines <dhd@debian.org>
14 *
15 * Based directly on:
16 *
17 * controlfb.h: Constants of all sorts for controlfb
18 * Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org>
19 *
20 * pmc-valkyrie.h: Console support for PowerMac "control" display adaptor.
21 * Copyright (C) 1997 Paul Mackerras.
22 *
23 * pmc-valkyrie.c: Console support for PowerMac "control" display adaptor.
24 * Copyright (C) 1997 Paul Mackerras.
25 *
26 * and indirectly from:
27 *
28 * pmc-control.h: Console support for PowerMac "control" display adaptor.
29 * Copyright (C) 1997 Paul Mackerras.
30 *
31 * pmc-control.c: Console support for PowerMac "control" display adaptor.
32 * Copyright (C) 1996 Paul Mackerras.
33 *
34 * platinumfb.c: Console support for PowerMac "platinum" display adaptor.
35 * Copyright (C) 1998 Jon Howell
36 */
37
38 #ifdef CONFIG_MAC
39 /* Valkyrie registers are word-aligned on m68k */
40 #define VALKYRIE_REG_PADSIZE 3
41 #else
42 #define VALKYRIE_REG_PADSIZE 7
43 #endif
44
45 /*
46 * Structure of the registers for the Valkyrie colormap registers.
47 */
48 struct cmap_regs {
49 unsigned char addr;
50 char pad1[VALKYRIE_REG_PADSIZE];
51 unsigned char lut;
52 };
53
54 /*
55 * Structure of the registers for the "valkyrie" display adaptor.
56 */
57
58 struct vpreg { /* padded register */
59 unsigned char r;
60 char pad[VALKYRIE_REG_PADSIZE];
61 };
62
63
64 struct valkyrie_regs {
65 struct vpreg mode;
66 struct vpreg depth;
67 struct vpreg status;
68 struct vpreg reg3;
69 struct vpreg intr;
70 struct vpreg reg5;
71 struct vpreg intr_enb;
72 struct vpreg msense;
73 };
74
75 /*
76 * Register initialization tables for the valkyrie display.
77 *
78 * Dot clock rate is
79 * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0].
80 */
81 struct valkyrie_regvals {
82 unsigned char mode;
83 unsigned char clock_params[3];
84 int pitch[2]; /* bytes/line, indexed by color_mode */
85 int hres;
86 int vres;
87 };
88
89 #ifndef CONFIG_MAC
90 /* Register values for 1024x768, 75Hz mode (17) */
91 /* I'm not sure which mode this is (16 or 17), so I'm defining it as 17,
92 * since the equivalent mode in controlfb (which I adapted this from) is
93 * also 17. Just because MacOS can't do this on Valkyrie doesn't mean we
94 * can't! :)
95 *
96 * I was going to use 12, 31, 3, which I found by myself, but instead I'm
97 * using 11, 28, 3 like controlfb, for consistency's sake.
98 */
99
100 static struct valkyrie_regvals valkyrie_reg_init_17 = {
101 15,
102 { 11, 28, 3 }, /* pixel clock = 79.55MHz for V=74.50Hz */
103 { 1024, 0 },
104 1024, 768
105 };
106
107 /* Register values for 1024x768, 72Hz mode (15) */
108 /* This used to be 12, 30, 3 for pixel clock = 78.12MHz for V=72.12Hz, but
109 * that didn't match MacOS in the same video mode on this chip, and it also
110 * caused the 15" Apple Studio Display to not work in this mode. While this
111 * mode still doesn't match MacOS exactly (as far as I can tell), it's a lot
112 * closer now, and it works with the Apple Studio Display.
113 *
114 * Yes, even though MacOS calls it "72Hz", in reality it's about 70Hz.
115 */
116 static struct valkyrie_regvals valkyrie_reg_init_15 = {
117 15,
118 { 12, 29, 3 }, /* pixel clock = 75.52MHz for V=69.71Hz? */
119 /* I interpolated the V=69.71 from the vmode 14 and old 15
120 * numbers. Is this result correct?
121 */
122 { 1024, 0 },
123 1024, 768
124 };
125
126 /* Register values for 1024x768, 60Hz mode (14) */
127 static struct valkyrie_regvals valkyrie_reg_init_14 = {
128 14,
129 { 15, 31, 3 }, /* pixel clock = 64.58MHz for V=59.62Hz */
130 { 1024, 0 },
131 1024, 768
132 };
133 #endif /* !defined CONFIG_MAC */
134
135 /* Register values for 832x624, 75Hz mode (13) */
136 static struct valkyrie_regvals valkyrie_reg_init_13 = {
137 9,
138 { 23, 42, 3 }, /* pixel clock = 57.07MHz for V=74.27Hz */
139 { 832, 0 },
140 832, 624
141 };
142
143 /* Register values for 800x600, 72Hz mode (11) */
144 static struct valkyrie_regvals valkyrie_reg_init_11 = {
145 13,
146 { 17, 27, 3 }, /* pixel clock = 49.63MHz for V=71.66Hz */
147 { 800, 0 },
148 800, 600
149 };
150
151 /* Register values for 800x600, 60Hz mode (10) */
152 static struct valkyrie_regvals valkyrie_reg_init_10 = {
153 12,
154 { 25, 32, 3 }, /* pixel clock = 40.0015MHz,
155 used to be 20,53,2, pixel clock 41.41MHz for V=59.78Hz */
156 { 800, 1600 },
157 800, 600
158 };
159
160 /* Register values for 640x480, 67Hz mode (6) */
161 static struct valkyrie_regvals valkyrie_reg_init_6 = {
162 6,
163 { 14, 27, 2 }, /* pixel clock = 30.13MHz for V=66.43Hz */
164 { 640, 1280 },
165 640, 480
166 };
167
168 /* Register values for 640x480, 60Hz mode (5) */
169 static struct valkyrie_regvals valkyrie_reg_init_5 = {
170 11,
171 { 23, 37, 2 }, /* pixel clock = 25.14MHz for V=59.85Hz */
172 { 640, 1280 },
173 640, 480
174 };
175
176 static struct valkyrie_regvals *valkyrie_reg_init[VMODE_MAX] = {
177 NULL,
178 NULL,
179 NULL,
180 NULL,
181 &valkyrie_reg_init_5,
182 &valkyrie_reg_init_6,
183 NULL,
184 NULL,
185 NULL,
186 &valkyrie_reg_init_10,
187 &valkyrie_reg_init_11,
188 NULL,
189 &valkyrie_reg_init_13,
190 #ifndef CONFIG_MAC
191 &valkyrie_reg_init_14,
192 &valkyrie_reg_init_15,
193 NULL,
194 &valkyrie_reg_init_17,
195 #endif
196 };