1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * controlfb_hw.h: Constants of all sorts for controlfb |
4 | * |
5 | * Copyright (C) 1998 Daniel Jacobowitz <dan@debian.org> |
6 | * |
7 | * Based on an awful lot of code, including: |
8 | * |
9 | * control.c: Console support for PowerMac "control" display adaptor. |
10 | * Copyright (C) 1996 Paul Mackerras. |
11 | * |
12 | * The so far unpublished platinumfb.c |
13 | * Copyright (C) 1998 Jon Howell |
14 | */ |
15 | |
16 | /* |
17 | * Structure of the registers for the RADACAL colormap device. |
18 | */ |
19 | struct cmap_regs { |
20 | unsigned char addr; /* index for both cmap and misc registers */ |
21 | char pad1[15]; |
22 | unsigned char crsr; /* cursor palette */ |
23 | char pad2[15]; |
24 | unsigned char dat; /* RADACAL misc register data */ |
25 | char pad3[15]; |
26 | unsigned char lut; /* cmap data */ |
27 | char pad4[15]; |
28 | }; |
29 | |
30 | /* |
31 | * Structure of the registers for the "control" display adaptor. |
32 | */ |
33 | #define PAD(x) char x[12] |
34 | |
35 | struct preg { /* padded register */ |
36 | unsigned r; |
37 | char pad[12]; |
38 | }; |
39 | |
40 | struct control_regs { |
41 | struct preg vcount; /* vertical counter */ |
42 | /* Vertical parameters are in units of 1/2 scan line */ |
43 | struct preg vswin; /* between vsblank and vssync */ |
44 | struct preg vsblank; /* vert start blank */ |
45 | struct preg veblank; /* vert end blank (display start) */ |
46 | struct preg vewin; /* between vesync and veblank */ |
47 | struct preg vesync; /* vert end sync */ |
48 | struct preg vssync; /* vert start sync */ |
49 | struct preg vperiod; /* vert period */ |
50 | struct preg piped; /* pipe delay hardware cursor */ |
51 | /* Horizontal params are in units of 2 pixels */ |
52 | struct preg hperiod; /* horiz period - 2 */ |
53 | struct preg hsblank; /* horiz start blank */ |
54 | struct preg heblank; /* horiz end blank */ |
55 | struct preg hesync; /* horiz end sync */ |
56 | struct preg hssync; /* horiz start sync */ |
57 | struct preg heq; /* half horiz sync len */ |
58 | struct preg hlfln; /* half horiz period */ |
59 | struct preg hserr; /* horiz period - horiz sync len */ |
60 | struct preg cnttst; |
61 | struct preg ctrl; /* display control */ |
62 | struct preg start_addr; /* start address: 5 lsbs zero */ |
63 | struct preg pitch; /* addrs diff between scan lines */ |
64 | struct preg mon_sense; /* monitor sense bits */ |
65 | struct preg vram_attr; /* enable vram banks */ |
66 | struct preg mode; |
67 | struct preg rfrcnt; /* refresh count */ |
68 | struct preg intr_ena; /* interrupt enable */ |
69 | struct preg intr_stat; /* interrupt status */ |
70 | struct preg res[5]; |
71 | }; |
72 | |
73 | struct control_regints { |
74 | /* Vertical parameters are in units of 1/2 scan line */ |
75 | unsigned vswin; /* between vsblank and vssync */ |
76 | unsigned vsblank; /* vert start blank */ |
77 | unsigned veblank; /* vert end blank (display start) */ |
78 | unsigned vewin; /* between vesync and veblank */ |
79 | unsigned vesync; /* vert end sync */ |
80 | unsigned vssync; /* vert start sync */ |
81 | unsigned vperiod; /* vert period */ |
82 | unsigned piped; /* pipe delay hardware cursor */ |
83 | /* Horizontal params are in units of 2 pixels */ |
84 | /* Except, apparently, for hres > 1024 (or == 1280?) */ |
85 | unsigned hperiod; /* horiz period - 2 */ |
86 | unsigned hsblank; /* horiz start blank */ |
87 | unsigned heblank; /* horiz end blank */ |
88 | unsigned hesync; /* horiz end sync */ |
89 | unsigned hssync; /* horiz start sync */ |
90 | unsigned heq; /* half horiz sync len */ |
91 | unsigned hlfln; /* half horiz period */ |
92 | unsigned hserr; /* horiz period - horiz sync len */ |
93 | }; |
94 | |
95 | /* |
96 | * Dot clock rate is |
97 | * 3.9064MHz * 2**clock_params[2] * clock_params[1] / clock_params[0]. |
98 | */ |
99 | struct control_regvals { |
100 | unsigned regs[16]; /* for vswin .. hserr */ |
101 | unsigned char mode; |
102 | unsigned char radacal_ctrl; |
103 | unsigned char clock_params[3]; |
104 | }; |
105 | |
106 | #define CTRLFB_OFF 16 /* position of pixel 0 in frame buffer */ |
107 | |
108 | |
109 | /* |
110 | * Best cmode supported by control |
111 | */ |
112 | struct max_cmodes { |
113 | int m[2]; /* 0: 2MB vram, 1: 4MB vram */ |
114 | }; |
115 | |
116 | /* |
117 | * Video modes supported by macmodes.c |
118 | */ |
119 | static struct max_cmodes control_mac_modes[] = { |
120 | {{-1,-1}}, /* 512x384, 60Hz interlaced (NTSC) */ |
121 | {{-1,-1}}, /* 512x384, 60Hz */ |
122 | {{-1,-1}}, /* 640x480, 50Hz interlaced (PAL) */ |
123 | {{-1,-1}}, /* 640x480, 60Hz interlaced (NTSC) */ |
124 | {{ 2, 2}}, /* 640x480, 60Hz (VGA) */ |
125 | {{ 2, 2}}, /* 640x480, 67Hz */ |
126 | {{-1,-1}}, /* 640x870, 75Hz (portrait) */ |
127 | {{-1,-1}}, /* 768x576, 50Hz (PAL full frame) */ |
128 | {{ 2, 2}}, /* 800x600, 56Hz */ |
129 | {{ 2, 2}}, /* 800x600, 60Hz */ |
130 | {{ 2, 2}}, /* 800x600, 72Hz */ |
131 | {{ 2, 2}}, /* 800x600, 75Hz */ |
132 | {{ 1, 2}}, /* 832x624, 75Hz */ |
133 | {{ 1, 2}}, /* 1024x768, 60Hz */ |
134 | {{ 1, 2}}, /* 1024x768, 70Hz (or 72Hz?) */ |
135 | {{ 1, 2}}, /* 1024x768, 75Hz (VESA) */ |
136 | {{ 1, 2}}, /* 1024x768, 75Hz */ |
137 | {{ 1, 2}}, /* 1152x870, 75Hz */ |
138 | {{ 0, 1}}, /* 1280x960, 75Hz */ |
139 | {{ 0, 1}}, /* 1280x1024, 75Hz */ |
140 | {{ 1, 2}}, /* 1152x768, 60Hz */ |
141 | {{ 0, 1}}, /* 1600x1024, 60Hz */ |
142 | }; |
143 | |
144 | |