1/*
2 * linux/drivers/video/platinumfb-hw.c -- Frame buffer device for the
3 * Platinum on-board video in PowerMac 7200s (and some clones based
4 * on the same motherboard.)
5 *
6 *  Created 09 Feb 1998 by Jon Howell <jonh@cs.dartmouth.edu>
7 *
8 * Copyright (C) 1998 Jon Howell
9 *
10 *  based on drivers/macintosh/platinum.c: Console support
11 * 	for PowerMac "platinum" display adaptor.
12 *  Copyright (C) 1996 Paul Mackerras and Mark Abene.
13 *
14 *  based on skeletonfb.c:
15 *  Created 28 Dec 1997 by Geert Uytterhoeven
16 *
17 * This file is subject to the terms and conditions of the GNU General Public
18 * License.  See the file COPYING in the main directory of this archive
19 * for more details.
20 */
21
22/*
23 * Structure of the registers for the DACula colormap device.
24 */
25struct cmap_regs {
26	unsigned char addr;
27	char pad1[15];
28	unsigned char d1;
29	char pad2[15];
30	unsigned char d2;
31	char pad3[15];
32	unsigned char lut;
33	char pad4[15];
34};
35
36/*
37 * Structure of the registers for the "platinum" display adaptor".
38 */
39struct preg {			/* padded register */
40	unsigned r;			/* notice this is 32 bits. */
41	char pad[12];
42};
43
44struct platinum_regs {
45	struct preg reg[128];
46};
47
48/*
49 * Register initialization tables for the platinum display.
50 *
51 * It seems that there are two different types of platinum display
52 * out there.  Older ones use the values in clocksel[1], for which
53 * the formula for the clock frequency seems to be
54 *	F = 14.3MHz * c0 / (c1 & 0x1f) / (1 << (c1 >> 5))
55 * Newer ones use the values in clocksel[0], for which the formula
56 * seems to be
57 *	F = 15MHz * c0 / ((c1 & 0x1f) + 2) / (1 << (c1 >> 5))
58 */
59struct platinum_regvals {
60	int	fb_offset;
61	int	pitch[3];
62	unsigned regs[26];
63	unsigned char offset[3];
64	unsigned char mode[3];
65	unsigned char dacula_ctrl[3];
66	unsigned char clock_params[2][2];
67};
68
69#define DIV2	0x20
70#define DIV4	0x40
71#define DIV8	0x60
72#define DIV16	0x80
73
74/* 1280x1024, 75Hz (20) */
75static struct platinum_regvals platinum_reg_init_20 = {
76	0x5c00,
77	{ 1312, 2592, 2592 },
78	{ 0xffc, 4, 0, 0, 0, 0, 0x428, 0,
79	  0, 0xb3, 0xd3, 0x12, 0x1a5, 0x23, 0x28, 0x2d,
80	  0x5e, 0x19e, 0x1a4, 0x854, 0x852, 4, 9, 0x50,
81	  0x850, 0x851 }, { 0x58, 0x5d, 0x5d },
82	{ 0, 0xff, 0xff }, { 0x51, 0x55, 0x55 },
83	{{ 45, 3 }, { 66, 7 }}
84};
85
86/* 1280x960, 75Hz (19) */
87static struct platinum_regvals platinum_reg_init_19 = {
88	0x5c00,
89	{ 1312, 2592, 2592 },
90	{ 0xffc, 4, 0, 0, 0, 0, 0x428, 0,
91	  0, 0xb2, 0xd2, 0x12, 0x1a3, 0x23, 0x28, 0x2d,
92	  0x5c, 0x19c, 0x1a2, 0x7d0, 0x7ce, 4, 9, 0x4c,
93	  0x7cc, 0x7cd }, { 0x56, 0x5b, 0x5b },
94	{ 0, 0xff, 0xff }, { 0x51, 0x55, 0x55 },
95	{{ 42, 3 }, { 44, 5 }}
96};
97
98/* 1152x870, 75Hz (18) */
99static struct platinum_regvals platinum_reg_init_18 = {
100	0x11b0,
101	{ 1184, 2336, 4640 },
102	{ 0xff0, 4, 0, 0, 0, 0, 0x38f, 0,
103	  0, 0x294, 0x16c, 0x20, 0x2d7, 0x3f, 0x49, 0x53,
104	  0x82, 0x2c2, 0x2d6, 0x726, 0x724, 4, 9, 0x52,
105	  0x71e, 0x722 }, { 0x74, 0x7c, 0x81 },
106	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
107	{{ 26, 0 + DIV2 }, { 42, 6 }}
108};
109
110/* 1024x768, 75Hz (17) */
111static struct platinum_regvals platinum_reg_init_17 = {
112	0x10b0,
113	{ 1056, 2080, 4128 },
114	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
115	  0, 0x254, 0x14b, 0x18, 0x295, 0x2f, 0x32, 0x3b,
116	  0x80, 0x280, 0x296, 0x648, 0x646, 4, 9, 0x40,
117	  0x640, 0x644 }, { 0x72, 0x7a, 0x7f },
118	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
119	{{ 54, 3 + DIV2 }, { 67, 12 }}
120};
121
122/* 1024x768, 75Hz (16) */
123static struct platinum_regvals platinum_reg_init_16 = {
124	0x10b0,
125	{ 1056, 2080, 4128 },
126	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
127	  0, 0x250, 0x147, 0x17, 0x28f, 0x2f, 0x35, 0x47,
128	  0x82, 0x282, 0x28e, 0x640, 0x63e, 4, 9, 0x3c,
129	  0x63c, 0x63d }, { 0x74, 0x7c, 0x81 },
130	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
131	{{ 20, 0 + DIV2 }, { 11, 2 }}
132};
133
134/* 1024x768, 70Hz (15) */
135static struct platinum_regvals platinum_reg_init_15 = {
136	0x10b0,
137	{ 1056, 2080, 4128 },
138	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
139	  0, 0x254, 0x14b, 0x22, 0x297, 0x43, 0x49, 0x5b,
140	  0x86, 0x286, 0x296, 0x64c, 0x64a, 0xa, 0xf, 0x44,
141	  0x644, 0x646 }, { 0x78, 0x80, 0x85 },
142	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
143	{{ 19, 0 + DIV2 }, { 110, 21 }}
144};
145
146/* 1024x768, 60Hz (14) */
147static struct platinum_regvals platinum_reg_init_14 = {
148	0x10b0,
149	{ 1056, 2080, 4128 },
150	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
151	  0, 0x25a, 0x14f, 0x22, 0x29f, 0x43, 0x49, 0x5b,
152	  0x8e, 0x28e, 0x29e, 0x64c, 0x64a, 0xa, 0xf, 0x44,
153	  0x644, 0x646 }, { 0x80, 0x88, 0x8d },
154	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
155	{{ 71, 6 + DIV2 }, { 118, 13 + DIV2 }}
156};
157
158/* 832x624, 75Hz (13) */
159static struct platinum_regvals platinum_reg_init_13 = {
160	0x70,
161	{ 864, 1680, 3344 },	/* MacOS does 1680 instead of 1696 to fit 16bpp in 1MB,
162				 * and we use 3344 instead of 3360 to fit in 2Mb
163				 */
164	{ 0xff0, 4, 0, 0, 0, 0, 0x299, 0,
165	  0, 0x21e, 0x120, 0x10, 0x23f, 0x1f, 0x25, 0x37,
166	  0x8a, 0x22a, 0x23e, 0x536, 0x534, 4, 9, 0x52,
167	  0x532, 0x533 }, { 0x7c, 0x84, 0x89 },
168	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
169	{{ 30, 0 + DIV4 }, { 56, 7 + DIV2 }}
170};
171
172/* 800x600, 75Hz (12) */
173static struct platinum_regvals platinum_reg_init_12 = {
174	0x1010,
175	{ 832, 1632, 3232 },
176	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
177	  0, 0x1ce, 0x108, 0x14, 0x20f, 0x27, 0x30, 0x39,
178	  0x72, 0x202, 0x20e, 0x4e2, 0x4e0, 4, 9, 0x2e,
179	  0x4de, 0x4df }, { 0x64, 0x6c, 0x71 },
180	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
181	{{ 122, 7 + DIV4 }, { 62, 9 + DIV2 }}
182};
183
184/* 800x600, 72Hz (11) */
185static struct platinum_regvals platinum_reg_init_11 = {
186	0x1010,
187	{ 832, 1632, 3232 },
188	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
189	  0, 0x1ca, 0x104, 0x1e, 0x207, 0x3b, 0x44, 0x4d,
190	  0x56, 0x1e6, 0x206, 0x534, 0x532, 0xa, 0xe, 0x38,
191	  0x4e8, 0x4ec }, { 0x48, 0x50, 0x55 },
192	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
193	{{ 26, 0 + DIV4 }, { 42, 6 + DIV2 }}
194};
195
196/* 800x600, 60Hz (10) */
197static struct platinum_regvals platinum_reg_init_10 = {
198	0x1010,
199	{ 832, 1632, 3232 },
200	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
201	  0, 0x1ce, 0x108, 0x20, 0x20f, 0x3f, 0x45, 0x5d,
202	  0x66, 0x1f6, 0x20e, 0x4e8, 0x4e6, 6, 0xa, 0x34,
203	  0x4e4, 0x4e5 }, { 0x58, 0x60, 0x65 },
204	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
205	{{ 54, 3 + DIV4 }, { 95, 1 + DIV8 }}
206};
207
208/* 800x600, 56Hz (9) --unsupported? copy of mode 10 for now... */
209static struct platinum_regvals platinum_reg_init_9 = {
210	0x1010,
211	{ 832, 1632, 3232 },
212	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
213	  0, 0x1ce, 0x108, 0x20, 0x20f, 0x3f, 0x45, 0x5d,
214	  0x66, 0x1f6, 0x20e, 0x4e8, 0x4e6, 6, 0xa, 0x34,
215	  0x4e4, 0x4e5 }, { 0x58, 0x60, 0x65 },
216	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
217	{{ 54, 3 + DIV4 }, { 88, 1 + DIV8 }}
218};
219
220/* 768x576, 50Hz Interlaced-PAL (8) */
221static struct platinum_regvals platinum_reg_init_8 = {
222	0x1010,
223	{ 800, 1568, 3104 },
224	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
225	  0, 0xc8, 0xec, 0x11, 0x1d7, 0x22, 0x25, 0x36,
226	  0x47, 0x1c7, 0x1d6, 0x271, 0x270, 4, 9, 0x27,
227	  0x267, 0x26b }, { 0x39, 0x41, 0x46 },
228	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
229	{{ 31, 0 + DIV16 }, { 74, 9 + DIV8 }}
230};
231
232/* 640x870, 75Hz Portrait (7) */
233static struct platinum_regvals platinum_reg_init_7 = {
234	0xb10,
235	{ 672, 1312, 2592 },
236	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
237	  0, 0x176, 0xd0, 0x14, 0x19f, 0x27, 0x2d, 0x3f,
238	  0x4a, 0x18a, 0x19e, 0x72c, 0x72a, 4, 9, 0x58,
239	  0x724, 0x72a }, { 0x3c, 0x44, 0x49 },
240	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
241	{{ 30, 0 + DIV4 }, { 56, 7 + DIV2 }}
242};
243
244/* 640x480, 67Hz (6) */
245static struct platinum_regvals platinum_reg_init_6 = {
246	0x1010,
247	{ 672, 1312, 2592 },
248	{ 0xff0, 4, 0, 0, 0, 0, 0x209, 0,
249	  0, 0x18e, 0xd8, 0x10, 0x1af, 0x1f, 0x25, 0x37,
250	  0x4a, 0x18a, 0x1ae, 0x41a, 0x418, 4, 9, 0x52,
251	  0x412, 0x416 }, { 0x3c, 0x44, 0x49 },
252	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
253	{{ 99, 4 + DIV8 }, { 42, 5 + DIV4 }}
254};
255
256/* 640x480, 60Hz (5) */
257static struct platinum_regvals platinum_reg_init_5 = {
258	0x1010,
259	{ 672, 1312, 2592 },
260	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
261	  0, 0x15e, 0xc8, 0x18, 0x18f, 0x2f, 0x35, 0x3e,
262	  0x42, 0x182, 0x18e, 0x41a, 0x418, 2, 7, 0x44,
263	  0x404, 0x408 }, { 0x34, 0x3c, 0x41 },
264	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
265	{{ 26, 0 + DIV8 }, { 14, 2 + DIV4 }}
266};
267
268/* 640x480, 60Hz Interlaced-NTSC (4) */
269static struct platinum_regvals platinum_reg_init_4 = {
270	0x1010,
271	{ 672, 1312, 2592 },
272	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
273	  0, 0xa5, 0xc3, 0xe, 0x185, 0x1c, 0x1f, 0x30,
274	  0x37, 0x177, 0x184, 0x20d, 0x20c, 5, 0xb, 0x23,
275	  0x203, 0x206 }, { 0x29, 0x31, 0x36 },
276	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
277	{{ 94, 5 + DIV16 }, { 48, 7 + DIV8 }}
278};
279
280/* 640x480, 50Hz Interlaced-PAL (3) */
281static struct platinum_regvals platinum_reg_init_3 = {
282	0x1010,
283	{ 672, 1312, 2592 },
284	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
285	  0, 0xc8, 0xec, 0x11, 0x1d7, 0x22, 0x25, 0x36,
286	  0x67, 0x1a7, 0x1d6, 0x271, 0x270, 4, 9, 0x57,
287	  0x237, 0x26b }, { 0x59, 0x61, 0x66 },
288	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
289	{{ 31, 0 + DIV16 }, { 74, 9 + DIV8 }}
290};
291
292/* 512x384, 60Hz (2) */
293static struct platinum_regvals platinum_reg_init_2 = {
294	0x1010,
295	{ 544, 1056, 2080 },
296	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
297	  0, 0x25c, 0x140, 0x10, 0x27f, 0x1f, 0x2b, 0x4f,
298	  0x68, 0x268, 0x27e, 0x32e, 0x32c, 4, 9, 0x2a,
299	  0x32a, 0x32b }, { 0x5a, 0x62, 0x67 },
300	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
301	{{ 33, 2 + DIV8 }, { 79, 9 + DIV8 }}
302};
303
304/* 512x384, 60Hz Interlaced-NTSC (1) */
305static struct platinum_regvals platinum_reg_init_1 = {
306	0x1010,
307	{ 544, 1056, 2080 },
308	{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
309	  0, 0xa5, 0xc3, 0xe, 0x185, 0x1c, 0x1f, 0x30,
310	  0x57, 0x157, 0x184, 0x20d, 0x20c, 5, 0xb, 0x53,
311	  0x1d3, 0x206 }, { 0x49, 0x51, 0x56 },
312	{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
313	{{ 94, 5 + DIV16 }, { 48, 7 + DIV8 }}
314};
315
316static struct platinum_regvals *platinum_reg_init[VMODE_MAX] = {
317	&platinum_reg_init_1,
318	&platinum_reg_init_2,
319	&platinum_reg_init_3,
320	&platinum_reg_init_4,
321	&platinum_reg_init_5,
322	&platinum_reg_init_6,
323	&platinum_reg_init_7,
324	&platinum_reg_init_8,
325	&platinum_reg_init_9,
326	&platinum_reg_init_10,
327	&platinum_reg_init_11,
328	&platinum_reg_init_12,
329	&platinum_reg_init_13,
330	&platinum_reg_init_14,
331	&platinum_reg_init_15,
332	&platinum_reg_init_16,
333	&platinum_reg_init_17,
334	&platinum_reg_init_18,
335	&platinum_reg_init_19,
336	&platinum_reg_init_20
337};
338
339struct vmode_attr {
340	int hres;
341	int vres;
342	int vfreq;
343	int interlaced;
344};
345
346struct vmode_attr vmode_attrs[VMODE_MAX] = {
347	{512, 384, 60, 1},
348	{512, 384, 60},
349	{640, 480, 50, 1},
350	{640, 480, 60, 1},
351	{640, 480, 60},
352	{640, 480, 67},
353	{640, 870, 75},
354	{768, 576, 50, 1},
355	{800, 600, 56},
356	{800, 600, 60},
357	{800, 600, 72},
358	{800, 600, 75},
359	{832, 624, 75},
360	{1024, 768, 60},
361	{1024, 768, 72},
362	{1024, 768, 75},
363	{1024, 768, 75},
364	{1152, 870, 75},
365	{1280, 960, 75},
366	{1280, 1024, 75}
367};
368
369