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 | }; |
197 | |