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-rw-r--r--drivers/video/fbdev/via/hw.c2134
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diff --git a/drivers/video/fbdev/via/hw.c b/drivers/video/fbdev/via/hw.c
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1/*
2 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
3 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
4
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public
7 * License as published by the Free Software Foundation;
8 * either version 2, or (at your option) any later version.
9
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
12 * the implied warranty of MERCHANTABILITY or FITNESS FOR
13 * A PARTICULAR PURPOSE.See the GNU General Public License
14 * for more details.
15
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc.,
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21
22#include <linux/via-core.h>
23#include <asm/olpc.h>
24#include "global.h"
25#include "via_clock.h"
26
27static struct pll_limit cle266_pll_limits[] = {
28 {19, 19, 4, 0},
29 {26, 102, 5, 0},
30 {53, 112, 6, 0},
31 {41, 100, 7, 0},
32 {83, 108, 8, 0},
33 {87, 118, 9, 0},
34 {95, 115, 12, 0},
35 {108, 108, 13, 0},
36 {83, 83, 17, 0},
37 {67, 98, 20, 0},
38 {121, 121, 24, 0},
39 {99, 99, 29, 0},
40 {33, 33, 3, 1},
41 {15, 23, 4, 1},
42 {37, 121, 5, 1},
43 {82, 82, 6, 1},
44 {31, 84, 7, 1},
45 {83, 83, 8, 1},
46 {76, 127, 9, 1},
47 {33, 121, 4, 2},
48 {91, 118, 5, 2},
49 {83, 109, 6, 2},
50 {90, 90, 7, 2},
51 {93, 93, 2, 3},
52 {53, 53, 3, 3},
53 {73, 117, 4, 3},
54 {101, 127, 5, 3},
55 {99, 99, 7, 3}
56};
57
58static struct pll_limit k800_pll_limits[] = {
59 {22, 22, 2, 0},
60 {28, 28, 3, 0},
61 {81, 112, 3, 1},
62 {86, 166, 4, 1},
63 {109, 153, 5, 1},
64 {66, 116, 3, 2},
65 {93, 137, 4, 2},
66 {117, 208, 5, 2},
67 {30, 30, 2, 3},
68 {69, 125, 3, 3},
69 {89, 161, 4, 3},
70 {121, 208, 5, 3},
71 {66, 66, 2, 4},
72 {85, 85, 3, 4},
73 {141, 161, 4, 4},
74 {177, 177, 5, 4}
75};
76
77static struct pll_limit cx700_pll_limits[] = {
78 {98, 98, 3, 1},
79 {86, 86, 4, 1},
80 {109, 208, 5, 1},
81 {68, 68, 2, 2},
82 {95, 116, 3, 2},
83 {93, 166, 4, 2},
84 {110, 206, 5, 2},
85 {174, 174, 7, 2},
86 {82, 109, 3, 3},
87 {117, 161, 4, 3},
88 {112, 208, 5, 3},
89 {141, 202, 5, 4}
90};
91
92static struct pll_limit vx855_pll_limits[] = {
93 {86, 86, 4, 1},
94 {108, 208, 5, 1},
95 {110, 208, 5, 2},
96 {83, 112, 3, 3},
97 {103, 161, 4, 3},
98 {112, 209, 5, 3},
99 {142, 161, 4, 4},
100 {141, 176, 5, 4}
101};
102
103/* according to VIA Technologies these values are based on experiment */
104static struct io_reg scaling_parameters[] = {
105 {VIACR, CR7A, 0xFF, 0x01}, /* LCD Scaling Parameter 1 */
106 {VIACR, CR7B, 0xFF, 0x02}, /* LCD Scaling Parameter 2 */
107 {VIACR, CR7C, 0xFF, 0x03}, /* LCD Scaling Parameter 3 */
108 {VIACR, CR7D, 0xFF, 0x04}, /* LCD Scaling Parameter 4 */
109 {VIACR, CR7E, 0xFF, 0x07}, /* LCD Scaling Parameter 5 */
110 {VIACR, CR7F, 0xFF, 0x0A}, /* LCD Scaling Parameter 6 */
111 {VIACR, CR80, 0xFF, 0x0D}, /* LCD Scaling Parameter 7 */
112 {VIACR, CR81, 0xFF, 0x13}, /* LCD Scaling Parameter 8 */
113 {VIACR, CR82, 0xFF, 0x16}, /* LCD Scaling Parameter 9 */
114 {VIACR, CR83, 0xFF, 0x19}, /* LCD Scaling Parameter 10 */
115 {VIACR, CR84, 0xFF, 0x1C}, /* LCD Scaling Parameter 11 */
116 {VIACR, CR85, 0xFF, 0x1D}, /* LCD Scaling Parameter 12 */
117 {VIACR, CR86, 0xFF, 0x1E}, /* LCD Scaling Parameter 13 */
118 {VIACR, CR87, 0xFF, 0x1F}, /* LCD Scaling Parameter 14 */
119};
120
121static struct io_reg common_vga[] = {
122 {VIACR, CR07, 0x10, 0x10}, /* [0] vertical total (bit 8)
123 [1] vertical display end (bit 8)
124 [2] vertical retrace start (bit 8)
125 [3] start vertical blanking (bit 8)
126 [4] line compare (bit 8)
127 [5] vertical total (bit 9)
128 [6] vertical display end (bit 9)
129 [7] vertical retrace start (bit 9) */
130 {VIACR, CR08, 0xFF, 0x00}, /* [0-4] preset row scan
131 [5-6] byte panning */
132 {VIACR, CR09, 0xDF, 0x40}, /* [0-4] max scan line
133 [5] start vertical blanking (bit 9)
134 [6] line compare (bit 9)
135 [7] scan doubling */
136 {VIACR, CR0A, 0xFF, 0x1E}, /* [0-4] cursor start
137 [5] cursor disable */
138 {VIACR, CR0B, 0xFF, 0x00}, /* [0-4] cursor end
139 [5-6] cursor skew */
140 {VIACR, CR0E, 0xFF, 0x00}, /* [0-7] cursor location (high) */
141 {VIACR, CR0F, 0xFF, 0x00}, /* [0-7] cursor location (low) */
142 {VIACR, CR11, 0xF0, 0x80}, /* [0-3] vertical retrace end
143 [6] memory refresh bandwidth
144 [7] CRTC register protect enable */
145 {VIACR, CR14, 0xFF, 0x00}, /* [0-4] underline location
146 [5] divide memory address clock by 4
147 [6] double word addressing */
148 {VIACR, CR17, 0xFF, 0x63}, /* [0-1] mapping of display address 13-14
149 [2] divide scan line clock by 2
150 [3] divide memory address clock by 2
151 [5] address wrap
152 [6] byte mode select
153 [7] sync enable */
154 {VIACR, CR18, 0xFF, 0xFF}, /* [0-7] line compare */
155};
156
157static struct fifo_depth_select display_fifo_depth_reg = {
158 /* IGA1 FIFO Depth_Select */
159 {IGA1_FIFO_DEPTH_SELECT_REG_NUM, {{SR17, 0, 7} } },
160 /* IGA2 FIFO Depth_Select */
161 {IGA2_FIFO_DEPTH_SELECT_REG_NUM,
162 {{CR68, 4, 7}, {CR94, 7, 7}, {CR95, 7, 7} } }
163};
164
165static struct fifo_threshold_select fifo_threshold_select_reg = {
166 /* IGA1 FIFO Threshold Select */
167 {IGA1_FIFO_THRESHOLD_REG_NUM, {{SR16, 0, 5}, {SR16, 7, 7} } },
168 /* IGA2 FIFO Threshold Select */
169 {IGA2_FIFO_THRESHOLD_REG_NUM, {{CR68, 0, 3}, {CR95, 4, 6} } }
170};
171
172static struct fifo_high_threshold_select fifo_high_threshold_select_reg = {
173 /* IGA1 FIFO High Threshold Select */
174 {IGA1_FIFO_HIGH_THRESHOLD_REG_NUM, {{SR18, 0, 5}, {SR18, 7, 7} } },
175 /* IGA2 FIFO High Threshold Select */
176 {IGA2_FIFO_HIGH_THRESHOLD_REG_NUM, {{CR92, 0, 3}, {CR95, 0, 2} } }
177};
178
179static struct display_queue_expire_num display_queue_expire_num_reg = {
180 /* IGA1 Display Queue Expire Num */
181 {IGA1_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{SR22, 0, 4} } },
182 /* IGA2 Display Queue Expire Num */
183 {IGA2_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{CR94, 0, 6} } }
184};
185
186/* Definition Fetch Count Registers*/
187static struct fetch_count fetch_count_reg = {
188 /* IGA1 Fetch Count Register */
189 {IGA1_FETCH_COUNT_REG_NUM, {{SR1C, 0, 7}, {SR1D, 0, 1} } },
190 /* IGA2 Fetch Count Register */
191 {IGA2_FETCH_COUNT_REG_NUM, {{CR65, 0, 7}, {CR67, 2, 3} } }
192};
193
194static struct rgbLUT palLUT_table[] = {
195 /* {R,G,B} */
196 /* Index 0x00~0x03 */
197 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x2A}, {0x00, 0x2A, 0x00}, {0x00,
198 0x2A,
199 0x2A},
200 /* Index 0x04~0x07 */
201 {0x2A, 0x00, 0x00}, {0x2A, 0x00, 0x2A}, {0x2A, 0x15, 0x00}, {0x2A,
202 0x2A,
203 0x2A},
204 /* Index 0x08~0x0B */
205 {0x15, 0x15, 0x15}, {0x15, 0x15, 0x3F}, {0x15, 0x3F, 0x15}, {0x15,
206 0x3F,
207 0x3F},
208 /* Index 0x0C~0x0F */
209 {0x3F, 0x15, 0x15}, {0x3F, 0x15, 0x3F}, {0x3F, 0x3F, 0x15}, {0x3F,
210 0x3F,
211 0x3F},
212 /* Index 0x10~0x13 */
213 {0x00, 0x00, 0x00}, {0x05, 0x05, 0x05}, {0x08, 0x08, 0x08}, {0x0B,
214 0x0B,
215 0x0B},
216 /* Index 0x14~0x17 */
217 {0x0E, 0x0E, 0x0E}, {0x11, 0x11, 0x11}, {0x14, 0x14, 0x14}, {0x18,
218 0x18,
219 0x18},
220 /* Index 0x18~0x1B */
221 {0x1C, 0x1C, 0x1C}, {0x20, 0x20, 0x20}, {0x24, 0x24, 0x24}, {0x28,
222 0x28,
223 0x28},
224 /* Index 0x1C~0x1F */
225 {0x2D, 0x2D, 0x2D}, {0x32, 0x32, 0x32}, {0x38, 0x38, 0x38}, {0x3F,
226 0x3F,
227 0x3F},
228 /* Index 0x20~0x23 */
229 {0x00, 0x00, 0x3F}, {0x10, 0x00, 0x3F}, {0x1F, 0x00, 0x3F}, {0x2F,
230 0x00,
231 0x3F},
232 /* Index 0x24~0x27 */
233 {0x3F, 0x00, 0x3F}, {0x3F, 0x00, 0x2F}, {0x3F, 0x00, 0x1F}, {0x3F,
234 0x00,
235 0x10},
236 /* Index 0x28~0x2B */
237 {0x3F, 0x00, 0x00}, {0x3F, 0x10, 0x00}, {0x3F, 0x1F, 0x00}, {0x3F,
238 0x2F,
239 0x00},
240 /* Index 0x2C~0x2F */
241 {0x3F, 0x3F, 0x00}, {0x2F, 0x3F, 0x00}, {0x1F, 0x3F, 0x00}, {0x10,
242 0x3F,
243 0x00},
244 /* Index 0x30~0x33 */
245 {0x00, 0x3F, 0x00}, {0x00, 0x3F, 0x10}, {0x00, 0x3F, 0x1F}, {0x00,
246 0x3F,
247 0x2F},
248 /* Index 0x34~0x37 */
249 {0x00, 0x3F, 0x3F}, {0x00, 0x2F, 0x3F}, {0x00, 0x1F, 0x3F}, {0x00,
250 0x10,
251 0x3F},
252 /* Index 0x38~0x3B */
253 {0x1F, 0x1F, 0x3F}, {0x27, 0x1F, 0x3F}, {0x2F, 0x1F, 0x3F}, {0x37,
254 0x1F,
255 0x3F},
256 /* Index 0x3C~0x3F */
257 {0x3F, 0x1F, 0x3F}, {0x3F, 0x1F, 0x37}, {0x3F, 0x1F, 0x2F}, {0x3F,
258 0x1F,
259 0x27},
260 /* Index 0x40~0x43 */
261 {0x3F, 0x1F, 0x1F}, {0x3F, 0x27, 0x1F}, {0x3F, 0x2F, 0x1F}, {0x3F,
262 0x3F,
263 0x1F},
264 /* Index 0x44~0x47 */
265 {0x3F, 0x3F, 0x1F}, {0x37, 0x3F, 0x1F}, {0x2F, 0x3F, 0x1F}, {0x27,
266 0x3F,
267 0x1F},
268 /* Index 0x48~0x4B */
269 {0x1F, 0x3F, 0x1F}, {0x1F, 0x3F, 0x27}, {0x1F, 0x3F, 0x2F}, {0x1F,
270 0x3F,
271 0x37},
272 /* Index 0x4C~0x4F */
273 {0x1F, 0x3F, 0x3F}, {0x1F, 0x37, 0x3F}, {0x1F, 0x2F, 0x3F}, {0x1F,
274 0x27,
275 0x3F},
276 /* Index 0x50~0x53 */
277 {0x2D, 0x2D, 0x3F}, {0x31, 0x2D, 0x3F}, {0x36, 0x2D, 0x3F}, {0x3A,
278 0x2D,
279 0x3F},
280 /* Index 0x54~0x57 */
281 {0x3F, 0x2D, 0x3F}, {0x3F, 0x2D, 0x3A}, {0x3F, 0x2D, 0x36}, {0x3F,
282 0x2D,
283 0x31},
284 /* Index 0x58~0x5B */
285 {0x3F, 0x2D, 0x2D}, {0x3F, 0x31, 0x2D}, {0x3F, 0x36, 0x2D}, {0x3F,
286 0x3A,
287 0x2D},
288 /* Index 0x5C~0x5F */
289 {0x3F, 0x3F, 0x2D}, {0x3A, 0x3F, 0x2D}, {0x36, 0x3F, 0x2D}, {0x31,
290 0x3F,
291 0x2D},
292 /* Index 0x60~0x63 */
293 {0x2D, 0x3F, 0x2D}, {0x2D, 0x3F, 0x31}, {0x2D, 0x3F, 0x36}, {0x2D,
294 0x3F,
295 0x3A},
296 /* Index 0x64~0x67 */
297 {0x2D, 0x3F, 0x3F}, {0x2D, 0x3A, 0x3F}, {0x2D, 0x36, 0x3F}, {0x2D,
298 0x31,
299 0x3F},
300 /* Index 0x68~0x6B */
301 {0x00, 0x00, 0x1C}, {0x07, 0x00, 0x1C}, {0x0E, 0x00, 0x1C}, {0x15,
302 0x00,
303 0x1C},
304 /* Index 0x6C~0x6F */
305 {0x1C, 0x00, 0x1C}, {0x1C, 0x00, 0x15}, {0x1C, 0x00, 0x0E}, {0x1C,
306 0x00,
307 0x07},
308 /* Index 0x70~0x73 */
309 {0x1C, 0x00, 0x00}, {0x1C, 0x07, 0x00}, {0x1C, 0x0E, 0x00}, {0x1C,
310 0x15,
311 0x00},
312 /* Index 0x74~0x77 */
313 {0x1C, 0x1C, 0x00}, {0x15, 0x1C, 0x00}, {0x0E, 0x1C, 0x00}, {0x07,
314 0x1C,
315 0x00},
316 /* Index 0x78~0x7B */
317 {0x00, 0x1C, 0x00}, {0x00, 0x1C, 0x07}, {0x00, 0x1C, 0x0E}, {0x00,
318 0x1C,
319 0x15},
320 /* Index 0x7C~0x7F */
321 {0x00, 0x1C, 0x1C}, {0x00, 0x15, 0x1C}, {0x00, 0x0E, 0x1C}, {0x00,
322 0x07,
323 0x1C},
324 /* Index 0x80~0x83 */
325 {0x0E, 0x0E, 0x1C}, {0x11, 0x0E, 0x1C}, {0x15, 0x0E, 0x1C}, {0x18,
326 0x0E,
327 0x1C},
328 /* Index 0x84~0x87 */
329 {0x1C, 0x0E, 0x1C}, {0x1C, 0x0E, 0x18}, {0x1C, 0x0E, 0x15}, {0x1C,
330 0x0E,
331 0x11},
332 /* Index 0x88~0x8B */
333 {0x1C, 0x0E, 0x0E}, {0x1C, 0x11, 0x0E}, {0x1C, 0x15, 0x0E}, {0x1C,
334 0x18,
335 0x0E},
336 /* Index 0x8C~0x8F */
337 {0x1C, 0x1C, 0x0E}, {0x18, 0x1C, 0x0E}, {0x15, 0x1C, 0x0E}, {0x11,
338 0x1C,
339 0x0E},
340 /* Index 0x90~0x93 */
341 {0x0E, 0x1C, 0x0E}, {0x0E, 0x1C, 0x11}, {0x0E, 0x1C, 0x15}, {0x0E,
342 0x1C,
343 0x18},
344 /* Index 0x94~0x97 */
345 {0x0E, 0x1C, 0x1C}, {0x0E, 0x18, 0x1C}, {0x0E, 0x15, 0x1C}, {0x0E,
346 0x11,
347 0x1C},
348 /* Index 0x98~0x9B */
349 {0x14, 0x14, 0x1C}, {0x16, 0x14, 0x1C}, {0x18, 0x14, 0x1C}, {0x1A,
350 0x14,
351 0x1C},
352 /* Index 0x9C~0x9F */
353 {0x1C, 0x14, 0x1C}, {0x1C, 0x14, 0x1A}, {0x1C, 0x14, 0x18}, {0x1C,
354 0x14,
355 0x16},
356 /* Index 0xA0~0xA3 */
357 {0x1C, 0x14, 0x14}, {0x1C, 0x16, 0x14}, {0x1C, 0x18, 0x14}, {0x1C,
358 0x1A,
359 0x14},
360 /* Index 0xA4~0xA7 */
361 {0x1C, 0x1C, 0x14}, {0x1A, 0x1C, 0x14}, {0x18, 0x1C, 0x14}, {0x16,
362 0x1C,
363 0x14},
364 /* Index 0xA8~0xAB */
365 {0x14, 0x1C, 0x14}, {0x14, 0x1C, 0x16}, {0x14, 0x1C, 0x18}, {0x14,
366 0x1C,
367 0x1A},
368 /* Index 0xAC~0xAF */
369 {0x14, 0x1C, 0x1C}, {0x14, 0x1A, 0x1C}, {0x14, 0x18, 0x1C}, {0x14,
370 0x16,
371 0x1C},
372 /* Index 0xB0~0xB3 */
373 {0x00, 0x00, 0x10}, {0x04, 0x00, 0x10}, {0x08, 0x00, 0x10}, {0x0C,
374 0x00,
375 0x10},
376 /* Index 0xB4~0xB7 */
377 {0x10, 0x00, 0x10}, {0x10, 0x00, 0x0C}, {0x10, 0x00, 0x08}, {0x10,
378 0x00,
379 0x04},
380 /* Index 0xB8~0xBB */
381 {0x10, 0x00, 0x00}, {0x10, 0x04, 0x00}, {0x10, 0x08, 0x00}, {0x10,
382 0x0C,
383 0x00},
384 /* Index 0xBC~0xBF */
385 {0x10, 0x10, 0x00}, {0x0C, 0x10, 0x00}, {0x08, 0x10, 0x00}, {0x04,
386 0x10,
387 0x00},
388 /* Index 0xC0~0xC3 */
389 {0x00, 0x10, 0x00}, {0x00, 0x10, 0x04}, {0x00, 0x10, 0x08}, {0x00,
390 0x10,
391 0x0C},
392 /* Index 0xC4~0xC7 */
393 {0x00, 0x10, 0x10}, {0x00, 0x0C, 0x10}, {0x00, 0x08, 0x10}, {0x00,
394 0x04,
395 0x10},
396 /* Index 0xC8~0xCB */
397 {0x08, 0x08, 0x10}, {0x0A, 0x08, 0x10}, {0x0C, 0x08, 0x10}, {0x0E,
398 0x08,
399 0x10},
400 /* Index 0xCC~0xCF */
401 {0x10, 0x08, 0x10}, {0x10, 0x08, 0x0E}, {0x10, 0x08, 0x0C}, {0x10,
402 0x08,
403 0x0A},
404 /* Index 0xD0~0xD3 */
405 {0x10, 0x08, 0x08}, {0x10, 0x0A, 0x08}, {0x10, 0x0C, 0x08}, {0x10,
406 0x0E,
407 0x08},
408 /* Index 0xD4~0xD7 */
409 {0x10, 0x10, 0x08}, {0x0E, 0x10, 0x08}, {0x0C, 0x10, 0x08}, {0x0A,
410 0x10,
411 0x08},
412 /* Index 0xD8~0xDB */
413 {0x08, 0x10, 0x08}, {0x08, 0x10, 0x0A}, {0x08, 0x10, 0x0C}, {0x08,
414 0x10,
415 0x0E},
416 /* Index 0xDC~0xDF */
417 {0x08, 0x10, 0x10}, {0x08, 0x0E, 0x10}, {0x08, 0x0C, 0x10}, {0x08,
418 0x0A,
419 0x10},
420 /* Index 0xE0~0xE3 */
421 {0x0B, 0x0B, 0x10}, {0x0C, 0x0B, 0x10}, {0x0D, 0x0B, 0x10}, {0x0F,
422 0x0B,
423 0x10},
424 /* Index 0xE4~0xE7 */
425 {0x10, 0x0B, 0x10}, {0x10, 0x0B, 0x0F}, {0x10, 0x0B, 0x0D}, {0x10,
426 0x0B,
427 0x0C},
428 /* Index 0xE8~0xEB */
429 {0x10, 0x0B, 0x0B}, {0x10, 0x0C, 0x0B}, {0x10, 0x0D, 0x0B}, {0x10,
430 0x0F,
431 0x0B},
432 /* Index 0xEC~0xEF */
433 {0x10, 0x10, 0x0B}, {0x0F, 0x10, 0x0B}, {0x0D, 0x10, 0x0B}, {0x0C,
434 0x10,
435 0x0B},
436 /* Index 0xF0~0xF3 */
437 {0x0B, 0x10, 0x0B}, {0x0B, 0x10, 0x0C}, {0x0B, 0x10, 0x0D}, {0x0B,
438 0x10,
439 0x0F},
440 /* Index 0xF4~0xF7 */
441 {0x0B, 0x10, 0x10}, {0x0B, 0x0F, 0x10}, {0x0B, 0x0D, 0x10}, {0x0B,
442 0x0C,
443 0x10},
444 /* Index 0xF8~0xFB */
445 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
446 0x00,
447 0x00},
448 /* Index 0xFC~0xFF */
449 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
450 0x00,
451 0x00}
452};
453
454static struct via_device_mapping device_mapping[] = {
455 {VIA_LDVP0, "LDVP0"},
456 {VIA_LDVP1, "LDVP1"},
457 {VIA_DVP0, "DVP0"},
458 {VIA_CRT, "CRT"},
459 {VIA_DVP1, "DVP1"},
460 {VIA_LVDS1, "LVDS1"},
461 {VIA_LVDS2, "LVDS2"}
462};
463
464/* structure with function pointers to support clock control */
465static struct via_clock clock;
466
467static void load_fix_bit_crtc_reg(void);
468static void init_gfx_chip_info(int chip_type);
469static void init_tmds_chip_info(void);
470static void init_lvds_chip_info(void);
471static void device_screen_off(void);
472static void device_screen_on(void);
473static void set_display_channel(void);
474static void device_off(void);
475static void device_on(void);
476static void enable_second_display_channel(void);
477static void disable_second_display_channel(void);
478
479void viafb_lock_crt(void)
480{
481 viafb_write_reg_mask(CR11, VIACR, BIT7, BIT7);
482}
483
484void viafb_unlock_crt(void)
485{
486 viafb_write_reg_mask(CR11, VIACR, 0, BIT7);
487 viafb_write_reg_mask(CR47, VIACR, 0, BIT0);
488}
489
490static void write_dac_reg(u8 index, u8 r, u8 g, u8 b)
491{
492 outb(index, LUT_INDEX_WRITE);
493 outb(r, LUT_DATA);
494 outb(g, LUT_DATA);
495 outb(b, LUT_DATA);
496}
497
498static u32 get_dvi_devices(int output_interface)
499{
500 switch (output_interface) {
501 case INTERFACE_DVP0:
502 return VIA_DVP0 | VIA_LDVP0;
503
504 case INTERFACE_DVP1:
505 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
506 return VIA_LDVP1;
507 else
508 return VIA_DVP1;
509
510 case INTERFACE_DFP_HIGH:
511 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
512 return 0;
513 else
514 return VIA_LVDS2 | VIA_DVP0;
515
516 case INTERFACE_DFP_LOW:
517 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
518 return 0;
519 else
520 return VIA_DVP1 | VIA_LVDS1;
521
522 case INTERFACE_TMDS:
523 return VIA_LVDS1;
524 }
525
526 return 0;
527}
528
529static u32 get_lcd_devices(int output_interface)
530{
531 switch (output_interface) {
532 case INTERFACE_DVP0:
533 return VIA_DVP0;
534
535 case INTERFACE_DVP1:
536 return VIA_DVP1;
537
538 case INTERFACE_DFP_HIGH:
539 return VIA_LVDS2 | VIA_DVP0;
540
541 case INTERFACE_DFP_LOW:
542 return VIA_LVDS1 | VIA_DVP1;
543
544 case INTERFACE_DFP:
545 return VIA_LVDS1 | VIA_LVDS2;
546
547 case INTERFACE_LVDS0:
548 case INTERFACE_LVDS0LVDS1:
549 return VIA_LVDS1;
550
551 case INTERFACE_LVDS1:
552 return VIA_LVDS2;
553 }
554
555 return 0;
556}
557
558/*Set IGA path for each device*/
559void viafb_set_iga_path(void)
560{
561 int crt_iga_path = 0;
562
563 if (viafb_SAMM_ON == 1) {
564 if (viafb_CRT_ON) {
565 if (viafb_primary_dev == CRT_Device)
566 crt_iga_path = IGA1;
567 else
568 crt_iga_path = IGA2;
569 }
570
571 if (viafb_DVI_ON) {
572 if (viafb_primary_dev == DVI_Device)
573 viaparinfo->tmds_setting_info->iga_path = IGA1;
574 else
575 viaparinfo->tmds_setting_info->iga_path = IGA2;
576 }
577
578 if (viafb_LCD_ON) {
579 if (viafb_primary_dev == LCD_Device) {
580 if (viafb_dual_fb &&
581 (viaparinfo->chip_info->gfx_chip_name ==
582 UNICHROME_CLE266)) {
583 viaparinfo->
584 lvds_setting_info->iga_path = IGA2;
585 crt_iga_path = IGA1;
586 viaparinfo->
587 tmds_setting_info->iga_path = IGA1;
588 } else
589 viaparinfo->
590 lvds_setting_info->iga_path = IGA1;
591 } else {
592 viaparinfo->lvds_setting_info->iga_path = IGA2;
593 }
594 }
595 if (viafb_LCD2_ON) {
596 if (LCD2_Device == viafb_primary_dev)
597 viaparinfo->lvds_setting_info2->iga_path = IGA1;
598 else
599 viaparinfo->lvds_setting_info2->iga_path = IGA2;
600 }
601 } else {
602 viafb_SAMM_ON = 0;
603
604 if (viafb_CRT_ON && viafb_LCD_ON) {
605 crt_iga_path = IGA1;
606 viaparinfo->lvds_setting_info->iga_path = IGA2;
607 } else if (viafb_CRT_ON && viafb_DVI_ON) {
608 crt_iga_path = IGA1;
609 viaparinfo->tmds_setting_info->iga_path = IGA2;
610 } else if (viafb_LCD_ON && viafb_DVI_ON) {
611 viaparinfo->tmds_setting_info->iga_path = IGA1;
612 viaparinfo->lvds_setting_info->iga_path = IGA2;
613 } else if (viafb_LCD_ON && viafb_LCD2_ON) {
614 viaparinfo->lvds_setting_info->iga_path = IGA2;
615 viaparinfo->lvds_setting_info2->iga_path = IGA2;
616 } else if (viafb_CRT_ON) {
617 crt_iga_path = IGA1;
618 } else if (viafb_LCD_ON) {
619 viaparinfo->lvds_setting_info->iga_path = IGA2;
620 } else if (viafb_DVI_ON) {
621 viaparinfo->tmds_setting_info->iga_path = IGA1;
622 }
623 }
624
625 viaparinfo->shared->iga1_devices = 0;
626 viaparinfo->shared->iga2_devices = 0;
627 if (viafb_CRT_ON) {
628 if (crt_iga_path == IGA1)
629 viaparinfo->shared->iga1_devices |= VIA_CRT;
630 else
631 viaparinfo->shared->iga2_devices |= VIA_CRT;
632 }
633
634 if (viafb_DVI_ON) {
635 if (viaparinfo->tmds_setting_info->iga_path == IGA1)
636 viaparinfo->shared->iga1_devices |= get_dvi_devices(
637 viaparinfo->chip_info->
638 tmds_chip_info.output_interface);
639 else
640 viaparinfo->shared->iga2_devices |= get_dvi_devices(
641 viaparinfo->chip_info->
642 tmds_chip_info.output_interface);
643 }
644
645 if (viafb_LCD_ON) {
646 if (viaparinfo->lvds_setting_info->iga_path == IGA1)
647 viaparinfo->shared->iga1_devices |= get_lcd_devices(
648 viaparinfo->chip_info->
649 lvds_chip_info.output_interface);
650 else
651 viaparinfo->shared->iga2_devices |= get_lcd_devices(
652 viaparinfo->chip_info->
653 lvds_chip_info.output_interface);
654 }
655
656 if (viafb_LCD2_ON) {
657 if (viaparinfo->lvds_setting_info2->iga_path == IGA1)
658 viaparinfo->shared->iga1_devices |= get_lcd_devices(
659 viaparinfo->chip_info->
660 lvds_chip_info2.output_interface);
661 else
662 viaparinfo->shared->iga2_devices |= get_lcd_devices(
663 viaparinfo->chip_info->
664 lvds_chip_info2.output_interface);
665 }
666
667 /* looks like the OLPC has its display wired to DVP1 and LVDS2 */
668 if (machine_is_olpc())
669 viaparinfo->shared->iga2_devices = VIA_DVP1 | VIA_LVDS2;
670}
671
672static void set_color_register(u8 index, u8 red, u8 green, u8 blue)
673{
674 outb(0xFF, 0x3C6); /* bit mask of palette */
675 outb(index, 0x3C8);
676 outb(red, 0x3C9);
677 outb(green, 0x3C9);
678 outb(blue, 0x3C9);
679}
680
681void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue)
682{
683 viafb_write_reg_mask(0x1A, VIASR, 0x00, 0x01);
684 set_color_register(index, red, green, blue);
685}
686
687void viafb_set_secondary_color_register(u8 index, u8 red, u8 green, u8 blue)
688{
689 viafb_write_reg_mask(0x1A, VIASR, 0x01, 0x01);
690 set_color_register(index, red, green, blue);
691}
692
693static void set_source_common(u8 index, u8 offset, u8 iga)
694{
695 u8 value, mask = 1 << offset;
696
697 switch (iga) {
698 case IGA1:
699 value = 0x00;
700 break;
701 case IGA2:
702 value = mask;
703 break;
704 default:
705 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
706 return;
707 }
708
709 via_write_reg_mask(VIACR, index, value, mask);
710}
711
712static void set_crt_source(u8 iga)
713{
714 u8 value;
715
716 switch (iga) {
717 case IGA1:
718 value = 0x00;
719 break;
720 case IGA2:
721 value = 0x40;
722 break;
723 default:
724 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
725 return;
726 }
727
728 via_write_reg_mask(VIASR, 0x16, value, 0x40);
729}
730
731static inline void set_ldvp0_source(u8 iga)
732{
733 set_source_common(0x6C, 7, iga);
734}
735
736static inline void set_ldvp1_source(u8 iga)
737{
738 set_source_common(0x93, 7, iga);
739}
740
741static inline void set_dvp0_source(u8 iga)
742{
743 set_source_common(0x96, 4, iga);
744}
745
746static inline void set_dvp1_source(u8 iga)
747{
748 set_source_common(0x9B, 4, iga);
749}
750
751static inline void set_lvds1_source(u8 iga)
752{
753 set_source_common(0x99, 4, iga);
754}
755
756static inline void set_lvds2_source(u8 iga)
757{
758 set_source_common(0x97, 4, iga);
759}
760
761void via_set_source(u32 devices, u8 iga)
762{
763 if (devices & VIA_LDVP0)
764 set_ldvp0_source(iga);
765 if (devices & VIA_LDVP1)
766 set_ldvp1_source(iga);
767 if (devices & VIA_DVP0)
768 set_dvp0_source(iga);
769 if (devices & VIA_CRT)
770 set_crt_source(iga);
771 if (devices & VIA_DVP1)
772 set_dvp1_source(iga);
773 if (devices & VIA_LVDS1)
774 set_lvds1_source(iga);
775 if (devices & VIA_LVDS2)
776 set_lvds2_source(iga);
777}
778
779static void set_crt_state(u8 state)
780{
781 u8 value;
782
783 switch (state) {
784 case VIA_STATE_ON:
785 value = 0x00;
786 break;
787 case VIA_STATE_STANDBY:
788 value = 0x10;
789 break;
790 case VIA_STATE_SUSPEND:
791 value = 0x20;
792 break;
793 case VIA_STATE_OFF:
794 value = 0x30;
795 break;
796 default:
797 return;
798 }
799
800 via_write_reg_mask(VIACR, 0x36, value, 0x30);
801}
802
803static void set_dvp0_state(u8 state)
804{
805 u8 value;
806
807 switch (state) {
808 case VIA_STATE_ON:
809 value = 0xC0;
810 break;
811 case VIA_STATE_OFF:
812 value = 0x00;
813 break;
814 default:
815 return;
816 }
817
818 via_write_reg_mask(VIASR, 0x1E, value, 0xC0);
819}
820
821static void set_dvp1_state(u8 state)
822{
823 u8 value;
824
825 switch (state) {
826 case VIA_STATE_ON:
827 value = 0x30;
828 break;
829 case VIA_STATE_OFF:
830 value = 0x00;
831 break;
832 default:
833 return;
834 }
835
836 via_write_reg_mask(VIASR, 0x1E, value, 0x30);
837}
838
839static void set_lvds1_state(u8 state)
840{
841 u8 value;
842
843 switch (state) {
844 case VIA_STATE_ON:
845 value = 0x03;
846 break;
847 case VIA_STATE_OFF:
848 value = 0x00;
849 break;
850 default:
851 return;
852 }
853
854 via_write_reg_mask(VIASR, 0x2A, value, 0x03);
855}
856
857static void set_lvds2_state(u8 state)
858{
859 u8 value;
860
861 switch (state) {
862 case VIA_STATE_ON:
863 value = 0x0C;
864 break;
865 case VIA_STATE_OFF:
866 value = 0x00;
867 break;
868 default:
869 return;
870 }
871
872 via_write_reg_mask(VIASR, 0x2A, value, 0x0C);
873}
874
875void via_set_state(u32 devices, u8 state)
876{
877 /*
878 TODO: Can we enable/disable these devices? How?
879 if (devices & VIA_LDVP0)
880 if (devices & VIA_LDVP1)
881 */
882 if (devices & VIA_DVP0)
883 set_dvp0_state(state);
884 if (devices & VIA_CRT)
885 set_crt_state(state);
886 if (devices & VIA_DVP1)
887 set_dvp1_state(state);
888 if (devices & VIA_LVDS1)
889 set_lvds1_state(state);
890 if (devices & VIA_LVDS2)
891 set_lvds2_state(state);
892}
893
894void via_set_sync_polarity(u32 devices, u8 polarity)
895{
896 if (polarity & ~(VIA_HSYNC_NEGATIVE | VIA_VSYNC_NEGATIVE)) {
897 printk(KERN_WARNING "viafb: Unsupported polarity: %d\n",
898 polarity);
899 return;
900 }
901
902 if (devices & VIA_CRT)
903 via_write_misc_reg_mask(polarity << 6, 0xC0);
904 if (devices & VIA_DVP1)
905 via_write_reg_mask(VIACR, 0x9B, polarity << 5, 0x60);
906 if (devices & VIA_LVDS1)
907 via_write_reg_mask(VIACR, 0x99, polarity << 5, 0x60);
908 if (devices & VIA_LVDS2)
909 via_write_reg_mask(VIACR, 0x97, polarity << 5, 0x60);
910}
911
912u32 via_parse_odev(char *input, char **end)
913{
914 char *ptr = input;
915 u32 odev = 0;
916 bool next = true;
917 int i, len;
918
919 while (next) {
920 next = false;
921 for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
922 len = strlen(device_mapping[i].name);
923 if (!strncmp(ptr, device_mapping[i].name, len)) {
924 odev |= device_mapping[i].device;
925 ptr += len;
926 if (*ptr == ',') {
927 ptr++;
928 next = true;
929 }
930 }
931 }
932 }
933
934 *end = ptr;
935 return odev;
936}
937
938void via_odev_to_seq(struct seq_file *m, u32 odev)
939{
940 int i, count = 0;
941
942 for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
943 if (odev & device_mapping[i].device) {
944 if (count > 0)
945 seq_putc(m, ',');
946
947 seq_puts(m, device_mapping[i].name);
948 count++;
949 }
950 }
951
952 seq_putc(m, '\n');
953}
954
955static void load_fix_bit_crtc_reg(void)
956{
957 viafb_unlock_crt();
958
959 /* always set to 1 */
960 viafb_write_reg_mask(CR03, VIACR, 0x80, BIT7);
961 /* line compare should set all bits = 1 (extend modes) */
962 viafb_write_reg_mask(CR35, VIACR, 0x10, BIT4);
963 /* line compare should set all bits = 1 (extend modes) */
964 viafb_write_reg_mask(CR33, VIACR, 0x06, BIT0 + BIT1 + BIT2);
965 /*viafb_write_reg_mask(CR32, VIACR, 0x01, BIT0); */
966
967 viafb_lock_crt();
968
969 /* If K8M800, enable Prefetch Mode. */
970 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
971 || (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890))
972 viafb_write_reg_mask(CR33, VIACR, 0x08, BIT3);
973 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
974 && (viaparinfo->chip_info->gfx_chip_revision == CLE266_REVISION_AX))
975 viafb_write_reg_mask(SR1A, VIASR, 0x02, BIT1);
976
977}
978
979void viafb_load_reg(int timing_value, int viafb_load_reg_num,
980 struct io_register *reg,
981 int io_type)
982{
983 int reg_mask;
984 int bit_num = 0;
985 int data;
986 int i, j;
987 int shift_next_reg;
988 int start_index, end_index, cr_index;
989 u16 get_bit;
990
991 for (i = 0; i < viafb_load_reg_num; i++) {
992 reg_mask = 0;
993 data = 0;
994 start_index = reg[i].start_bit;
995 end_index = reg[i].end_bit;
996 cr_index = reg[i].io_addr;
997
998 shift_next_reg = bit_num;
999 for (j = start_index; j <= end_index; j++) {
1000 /*if (bit_num==8) timing_value = timing_value >>8; */
1001 reg_mask = reg_mask | (BIT0 << j);
1002 get_bit = (timing_value & (BIT0 << bit_num));
1003 data =
1004 data | ((get_bit >> shift_next_reg) << start_index);
1005 bit_num++;
1006 }
1007 if (io_type == VIACR)
1008 viafb_write_reg_mask(cr_index, VIACR, data, reg_mask);
1009 else
1010 viafb_write_reg_mask(cr_index, VIASR, data, reg_mask);
1011 }
1012
1013}
1014
1015/* Write Registers */
1016void viafb_write_regx(struct io_reg RegTable[], int ItemNum)
1017{
1018 int i;
1019
1020 /*DEBUG_MSG(KERN_INFO "Table Size : %x!!\n",ItemNum ); */
1021
1022 for (i = 0; i < ItemNum; i++)
1023 via_write_reg_mask(RegTable[i].port, RegTable[i].index,
1024 RegTable[i].value, RegTable[i].mask);
1025}
1026
1027void viafb_load_fetch_count_reg(int h_addr, int bpp_byte, int set_iga)
1028{
1029 int reg_value;
1030 int viafb_load_reg_num;
1031 struct io_register *reg = NULL;
1032
1033 switch (set_iga) {
1034 case IGA1:
1035 reg_value = IGA1_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1036 viafb_load_reg_num = fetch_count_reg.
1037 iga1_fetch_count_reg.reg_num;
1038 reg = fetch_count_reg.iga1_fetch_count_reg.reg;
1039 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1040 break;
1041 case IGA2:
1042 reg_value = IGA2_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1043 viafb_load_reg_num = fetch_count_reg.
1044 iga2_fetch_count_reg.reg_num;
1045 reg = fetch_count_reg.iga2_fetch_count_reg.reg;
1046 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1047 break;
1048 }
1049
1050}
1051
1052void viafb_load_FIFO_reg(int set_iga, int hor_active, int ver_active)
1053{
1054 int reg_value;
1055 int viafb_load_reg_num;
1056 struct io_register *reg = NULL;
1057 int iga1_fifo_max_depth = 0, iga1_fifo_threshold =
1058 0, iga1_fifo_high_threshold = 0, iga1_display_queue_expire_num = 0;
1059 int iga2_fifo_max_depth = 0, iga2_fifo_threshold =
1060 0, iga2_fifo_high_threshold = 0, iga2_display_queue_expire_num = 0;
1061
1062 if (set_iga == IGA1) {
1063 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1064 iga1_fifo_max_depth = K800_IGA1_FIFO_MAX_DEPTH;
1065 iga1_fifo_threshold = K800_IGA1_FIFO_THRESHOLD;
1066 iga1_fifo_high_threshold =
1067 K800_IGA1_FIFO_HIGH_THRESHOLD;
1068 /* If resolution > 1280x1024, expire length = 64, else
1069 expire length = 128 */
1070 if ((hor_active > 1280) && (ver_active > 1024))
1071 iga1_display_queue_expire_num = 16;
1072 else
1073 iga1_display_queue_expire_num =
1074 K800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1075
1076 }
1077
1078 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1079 iga1_fifo_max_depth = P880_IGA1_FIFO_MAX_DEPTH;
1080 iga1_fifo_threshold = P880_IGA1_FIFO_THRESHOLD;
1081 iga1_fifo_high_threshold =
1082 P880_IGA1_FIFO_HIGH_THRESHOLD;
1083 iga1_display_queue_expire_num =
1084 P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1085
1086 /* If resolution > 1280x1024, expire length = 64, else
1087 expire length = 128 */
1088 if ((hor_active > 1280) && (ver_active > 1024))
1089 iga1_display_queue_expire_num = 16;
1090 else
1091 iga1_display_queue_expire_num =
1092 P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1093 }
1094
1095 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1096 iga1_fifo_max_depth = CN700_IGA1_FIFO_MAX_DEPTH;
1097 iga1_fifo_threshold = CN700_IGA1_FIFO_THRESHOLD;
1098 iga1_fifo_high_threshold =
1099 CN700_IGA1_FIFO_HIGH_THRESHOLD;
1100
1101 /* If resolution > 1280x1024, expire length = 64,
1102 else expire length = 128 */
1103 if ((hor_active > 1280) && (ver_active > 1024))
1104 iga1_display_queue_expire_num = 16;
1105 else
1106 iga1_display_queue_expire_num =
1107 CN700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1108 }
1109
1110 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1111 iga1_fifo_max_depth = CX700_IGA1_FIFO_MAX_DEPTH;
1112 iga1_fifo_threshold = CX700_IGA1_FIFO_THRESHOLD;
1113 iga1_fifo_high_threshold =
1114 CX700_IGA1_FIFO_HIGH_THRESHOLD;
1115 iga1_display_queue_expire_num =
1116 CX700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1117 }
1118
1119 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1120 iga1_fifo_max_depth = K8M890_IGA1_FIFO_MAX_DEPTH;
1121 iga1_fifo_threshold = K8M890_IGA1_FIFO_THRESHOLD;
1122 iga1_fifo_high_threshold =
1123 K8M890_IGA1_FIFO_HIGH_THRESHOLD;
1124 iga1_display_queue_expire_num =
1125 K8M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1126 }
1127
1128 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1129 iga1_fifo_max_depth = P4M890_IGA1_FIFO_MAX_DEPTH;
1130 iga1_fifo_threshold = P4M890_IGA1_FIFO_THRESHOLD;
1131 iga1_fifo_high_threshold =
1132 P4M890_IGA1_FIFO_HIGH_THRESHOLD;
1133 iga1_display_queue_expire_num =
1134 P4M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1135 }
1136
1137 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1138 iga1_fifo_max_depth = P4M900_IGA1_FIFO_MAX_DEPTH;
1139 iga1_fifo_threshold = P4M900_IGA1_FIFO_THRESHOLD;
1140 iga1_fifo_high_threshold =
1141 P4M900_IGA1_FIFO_HIGH_THRESHOLD;
1142 iga1_display_queue_expire_num =
1143 P4M900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1144 }
1145
1146 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1147 iga1_fifo_max_depth = VX800_IGA1_FIFO_MAX_DEPTH;
1148 iga1_fifo_threshold = VX800_IGA1_FIFO_THRESHOLD;
1149 iga1_fifo_high_threshold =
1150 VX800_IGA1_FIFO_HIGH_THRESHOLD;
1151 iga1_display_queue_expire_num =
1152 VX800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1153 }
1154
1155 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1156 iga1_fifo_max_depth = VX855_IGA1_FIFO_MAX_DEPTH;
1157 iga1_fifo_threshold = VX855_IGA1_FIFO_THRESHOLD;
1158 iga1_fifo_high_threshold =
1159 VX855_IGA1_FIFO_HIGH_THRESHOLD;
1160 iga1_display_queue_expire_num =
1161 VX855_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1162 }
1163
1164 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1165 iga1_fifo_max_depth = VX900_IGA1_FIFO_MAX_DEPTH;
1166 iga1_fifo_threshold = VX900_IGA1_FIFO_THRESHOLD;
1167 iga1_fifo_high_threshold =
1168 VX900_IGA1_FIFO_HIGH_THRESHOLD;
1169 iga1_display_queue_expire_num =
1170 VX900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1171 }
1172
1173 /* Set Display FIFO Depath Select */
1174 reg_value = IGA1_FIFO_DEPTH_SELECT_FORMULA(iga1_fifo_max_depth);
1175 viafb_load_reg_num =
1176 display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg_num;
1177 reg = display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg;
1178 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1179
1180 /* Set Display FIFO Threshold Select */
1181 reg_value = IGA1_FIFO_THRESHOLD_FORMULA(iga1_fifo_threshold);
1182 viafb_load_reg_num =
1183 fifo_threshold_select_reg.
1184 iga1_fifo_threshold_select_reg.reg_num;
1185 reg =
1186 fifo_threshold_select_reg.
1187 iga1_fifo_threshold_select_reg.reg;
1188 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1189
1190 /* Set FIFO High Threshold Select */
1191 reg_value =
1192 IGA1_FIFO_HIGH_THRESHOLD_FORMULA(iga1_fifo_high_threshold);
1193 viafb_load_reg_num =
1194 fifo_high_threshold_select_reg.
1195 iga1_fifo_high_threshold_select_reg.reg_num;
1196 reg =
1197 fifo_high_threshold_select_reg.
1198 iga1_fifo_high_threshold_select_reg.reg;
1199 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1200
1201 /* Set Display Queue Expire Num */
1202 reg_value =
1203 IGA1_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1204 (iga1_display_queue_expire_num);
1205 viafb_load_reg_num =
1206 display_queue_expire_num_reg.
1207 iga1_display_queue_expire_num_reg.reg_num;
1208 reg =
1209 display_queue_expire_num_reg.
1210 iga1_display_queue_expire_num_reg.reg;
1211 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1212
1213 } else {
1214 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1215 iga2_fifo_max_depth = K800_IGA2_FIFO_MAX_DEPTH;
1216 iga2_fifo_threshold = K800_IGA2_FIFO_THRESHOLD;
1217 iga2_fifo_high_threshold =
1218 K800_IGA2_FIFO_HIGH_THRESHOLD;
1219
1220 /* If resolution > 1280x1024, expire length = 64,
1221 else expire length = 128 */
1222 if ((hor_active > 1280) && (ver_active > 1024))
1223 iga2_display_queue_expire_num = 16;
1224 else
1225 iga2_display_queue_expire_num =
1226 K800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1227 }
1228
1229 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1230 iga2_fifo_max_depth = P880_IGA2_FIFO_MAX_DEPTH;
1231 iga2_fifo_threshold = P880_IGA2_FIFO_THRESHOLD;
1232 iga2_fifo_high_threshold =
1233 P880_IGA2_FIFO_HIGH_THRESHOLD;
1234
1235 /* If resolution > 1280x1024, expire length = 64,
1236 else expire length = 128 */
1237 if ((hor_active > 1280) && (ver_active > 1024))
1238 iga2_display_queue_expire_num = 16;
1239 else
1240 iga2_display_queue_expire_num =
1241 P880_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1242 }
1243
1244 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1245 iga2_fifo_max_depth = CN700_IGA2_FIFO_MAX_DEPTH;
1246 iga2_fifo_threshold = CN700_IGA2_FIFO_THRESHOLD;
1247 iga2_fifo_high_threshold =
1248 CN700_IGA2_FIFO_HIGH_THRESHOLD;
1249
1250 /* If resolution > 1280x1024, expire length = 64,
1251 else expire length = 128 */
1252 if ((hor_active > 1280) && (ver_active > 1024))
1253 iga2_display_queue_expire_num = 16;
1254 else
1255 iga2_display_queue_expire_num =
1256 CN700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1257 }
1258
1259 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1260 iga2_fifo_max_depth = CX700_IGA2_FIFO_MAX_DEPTH;
1261 iga2_fifo_threshold = CX700_IGA2_FIFO_THRESHOLD;
1262 iga2_fifo_high_threshold =
1263 CX700_IGA2_FIFO_HIGH_THRESHOLD;
1264 iga2_display_queue_expire_num =
1265 CX700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1266 }
1267
1268 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1269 iga2_fifo_max_depth = K8M890_IGA2_FIFO_MAX_DEPTH;
1270 iga2_fifo_threshold = K8M890_IGA2_FIFO_THRESHOLD;
1271 iga2_fifo_high_threshold =
1272 K8M890_IGA2_FIFO_HIGH_THRESHOLD;
1273 iga2_display_queue_expire_num =
1274 K8M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1275 }
1276
1277 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1278 iga2_fifo_max_depth = P4M890_IGA2_FIFO_MAX_DEPTH;
1279 iga2_fifo_threshold = P4M890_IGA2_FIFO_THRESHOLD;
1280 iga2_fifo_high_threshold =
1281 P4M890_IGA2_FIFO_HIGH_THRESHOLD;
1282 iga2_display_queue_expire_num =
1283 P4M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1284 }
1285
1286 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1287 iga2_fifo_max_depth = P4M900_IGA2_FIFO_MAX_DEPTH;
1288 iga2_fifo_threshold = P4M900_IGA2_FIFO_THRESHOLD;
1289 iga2_fifo_high_threshold =
1290 P4M900_IGA2_FIFO_HIGH_THRESHOLD;
1291 iga2_display_queue_expire_num =
1292 P4M900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1293 }
1294
1295 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1296 iga2_fifo_max_depth = VX800_IGA2_FIFO_MAX_DEPTH;
1297 iga2_fifo_threshold = VX800_IGA2_FIFO_THRESHOLD;
1298 iga2_fifo_high_threshold =
1299 VX800_IGA2_FIFO_HIGH_THRESHOLD;
1300 iga2_display_queue_expire_num =
1301 VX800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1302 }
1303
1304 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1305 iga2_fifo_max_depth = VX855_IGA2_FIFO_MAX_DEPTH;
1306 iga2_fifo_threshold = VX855_IGA2_FIFO_THRESHOLD;
1307 iga2_fifo_high_threshold =
1308 VX855_IGA2_FIFO_HIGH_THRESHOLD;
1309 iga2_display_queue_expire_num =
1310 VX855_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1311 }
1312
1313 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1314 iga2_fifo_max_depth = VX900_IGA2_FIFO_MAX_DEPTH;
1315 iga2_fifo_threshold = VX900_IGA2_FIFO_THRESHOLD;
1316 iga2_fifo_high_threshold =
1317 VX900_IGA2_FIFO_HIGH_THRESHOLD;
1318 iga2_display_queue_expire_num =
1319 VX900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1320 }
1321
1322 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1323 /* Set Display FIFO Depath Select */
1324 reg_value =
1325 IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth)
1326 - 1;
1327 /* Patch LCD in IGA2 case */
1328 viafb_load_reg_num =
1329 display_fifo_depth_reg.
1330 iga2_fifo_depth_select_reg.reg_num;
1331 reg =
1332 display_fifo_depth_reg.
1333 iga2_fifo_depth_select_reg.reg;
1334 viafb_load_reg(reg_value,
1335 viafb_load_reg_num, reg, VIACR);
1336 } else {
1337
1338 /* Set Display FIFO Depath Select */
1339 reg_value =
1340 IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth);
1341 viafb_load_reg_num =
1342 display_fifo_depth_reg.
1343 iga2_fifo_depth_select_reg.reg_num;
1344 reg =
1345 display_fifo_depth_reg.
1346 iga2_fifo_depth_select_reg.reg;
1347 viafb_load_reg(reg_value,
1348 viafb_load_reg_num, reg, VIACR);
1349 }
1350
1351 /* Set Display FIFO Threshold Select */
1352 reg_value = IGA2_FIFO_THRESHOLD_FORMULA(iga2_fifo_threshold);
1353 viafb_load_reg_num =
1354 fifo_threshold_select_reg.
1355 iga2_fifo_threshold_select_reg.reg_num;
1356 reg =
1357 fifo_threshold_select_reg.
1358 iga2_fifo_threshold_select_reg.reg;
1359 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1360
1361 /* Set FIFO High Threshold Select */
1362 reg_value =
1363 IGA2_FIFO_HIGH_THRESHOLD_FORMULA(iga2_fifo_high_threshold);
1364 viafb_load_reg_num =
1365 fifo_high_threshold_select_reg.
1366 iga2_fifo_high_threshold_select_reg.reg_num;
1367 reg =
1368 fifo_high_threshold_select_reg.
1369 iga2_fifo_high_threshold_select_reg.reg;
1370 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1371
1372 /* Set Display Queue Expire Num */
1373 reg_value =
1374 IGA2_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1375 (iga2_display_queue_expire_num);
1376 viafb_load_reg_num =
1377 display_queue_expire_num_reg.
1378 iga2_display_queue_expire_num_reg.reg_num;
1379 reg =
1380 display_queue_expire_num_reg.
1381 iga2_display_queue_expire_num_reg.reg;
1382 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1383
1384 }
1385
1386}
1387
1388static struct via_pll_config get_pll_config(struct pll_limit *limits, int size,
1389 int clk)
1390{
1391 struct via_pll_config cur, up, down, best = {0, 1, 0};
1392 const u32 f0 = 14318180; /* X1 frequency */
1393 int i, f;
1394
1395 for (i = 0; i < size; i++) {
1396 cur.rshift = limits[i].rshift;
1397 cur.divisor = limits[i].divisor;
1398 cur.multiplier = clk / ((f0 / cur.divisor)>>cur.rshift);
1399 f = abs(get_pll_output_frequency(f0, cur) - clk);
1400 up = down = cur;
1401 up.multiplier++;
1402 down.multiplier--;
1403 if (abs(get_pll_output_frequency(f0, up) - clk) < f)
1404 cur = up;
1405 else if (abs(get_pll_output_frequency(f0, down) - clk) < f)
1406 cur = down;
1407
1408 if (cur.multiplier < limits[i].multiplier_min)
1409 cur.multiplier = limits[i].multiplier_min;
1410 else if (cur.multiplier > limits[i].multiplier_max)
1411 cur.multiplier = limits[i].multiplier_max;
1412
1413 f = abs(get_pll_output_frequency(f0, cur) - clk);
1414 if (f < abs(get_pll_output_frequency(f0, best) - clk))
1415 best = cur;
1416 }
1417
1418 return best;
1419}
1420
1421static struct via_pll_config get_best_pll_config(int clk)
1422{
1423 struct via_pll_config config;
1424
1425 switch (viaparinfo->chip_info->gfx_chip_name) {
1426 case UNICHROME_CLE266:
1427 case UNICHROME_K400:
1428 config = get_pll_config(cle266_pll_limits,
1429 ARRAY_SIZE(cle266_pll_limits), clk);
1430 break;
1431 case UNICHROME_K800:
1432 case UNICHROME_PM800:
1433 case UNICHROME_CN700:
1434 config = get_pll_config(k800_pll_limits,
1435 ARRAY_SIZE(k800_pll_limits), clk);
1436 break;
1437 case UNICHROME_CX700:
1438 case UNICHROME_CN750:
1439 case UNICHROME_K8M890:
1440 case UNICHROME_P4M890:
1441 case UNICHROME_P4M900:
1442 case UNICHROME_VX800:
1443 config = get_pll_config(cx700_pll_limits,
1444 ARRAY_SIZE(cx700_pll_limits), clk);
1445 break;
1446 case UNICHROME_VX855:
1447 case UNICHROME_VX900:
1448 config = get_pll_config(vx855_pll_limits,
1449 ARRAY_SIZE(vx855_pll_limits), clk);
1450 break;
1451 }
1452
1453 return config;
1454}
1455
1456/* Set VCLK*/
1457void viafb_set_vclock(u32 clk, int set_iga)
1458{
1459 struct via_pll_config config = get_best_pll_config(clk);
1460
1461 if (set_iga == IGA1)
1462 clock.set_primary_pll(config);
1463 if (set_iga == IGA2)
1464 clock.set_secondary_pll(config);
1465
1466 /* Fire! */
1467 via_write_misc_reg_mask(0x0C, 0x0C); /* select external clock */
1468}
1469
1470struct via_display_timing var_to_timing(const struct fb_var_screeninfo *var,
1471 u16 cxres, u16 cyres)
1472{
1473 struct via_display_timing timing;
1474 u16 dx = (var->xres - cxres) / 2, dy = (var->yres - cyres) / 2;
1475
1476 timing.hor_addr = cxres;
1477 timing.hor_sync_start = timing.hor_addr + var->right_margin + dx;
1478 timing.hor_sync_end = timing.hor_sync_start + var->hsync_len;
1479 timing.hor_total = timing.hor_sync_end + var->left_margin + dx;
1480 timing.hor_blank_start = timing.hor_addr + dx;
1481 timing.hor_blank_end = timing.hor_total - dx;
1482 timing.ver_addr = cyres;
1483 timing.ver_sync_start = timing.ver_addr + var->lower_margin + dy;
1484 timing.ver_sync_end = timing.ver_sync_start + var->vsync_len;
1485 timing.ver_total = timing.ver_sync_end + var->upper_margin + dy;
1486 timing.ver_blank_start = timing.ver_addr + dy;
1487 timing.ver_blank_end = timing.ver_total - dy;
1488 return timing;
1489}
1490
1491void viafb_fill_crtc_timing(const struct fb_var_screeninfo *var,
1492 u16 cxres, u16 cyres, int iga)
1493{
1494 struct via_display_timing crt_reg = var_to_timing(var,
1495 cxres ? cxres : var->xres, cyres ? cyres : var->yres);
1496
1497 if (iga == IGA1)
1498 via_set_primary_timing(&crt_reg);
1499 else if (iga == IGA2)
1500 via_set_secondary_timing(&crt_reg);
1501
1502 viafb_load_fetch_count_reg(var->xres, var->bits_per_pixel / 8, iga);
1503 if (viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266
1504 && viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400)
1505 viafb_load_FIFO_reg(iga, var->xres, var->yres);
1506
1507 viafb_set_vclock(PICOS2KHZ(var->pixclock) * 1000, iga);
1508}
1509
1510void viafb_init_chip_info(int chip_type)
1511{
1512 via_clock_init(&clock, chip_type);
1513 init_gfx_chip_info(chip_type);
1514 init_tmds_chip_info();
1515 init_lvds_chip_info();
1516
1517 /*Set IGA path for each device */
1518 viafb_set_iga_path();
1519
1520 viaparinfo->lvds_setting_info->display_method = viafb_lcd_dsp_method;
1521 viaparinfo->lvds_setting_info->lcd_mode = viafb_lcd_mode;
1522 viaparinfo->lvds_setting_info2->display_method =
1523 viaparinfo->lvds_setting_info->display_method;
1524 viaparinfo->lvds_setting_info2->lcd_mode =
1525 viaparinfo->lvds_setting_info->lcd_mode;
1526}
1527
1528void viafb_update_device_setting(int hres, int vres, int bpp, int flag)
1529{
1530 if (flag == 0) {
1531 viaparinfo->tmds_setting_info->h_active = hres;
1532 viaparinfo->tmds_setting_info->v_active = vres;
1533 } else {
1534
1535 if (viaparinfo->tmds_setting_info->iga_path == IGA2) {
1536 viaparinfo->tmds_setting_info->h_active = hres;
1537 viaparinfo->tmds_setting_info->v_active = vres;
1538 }
1539
1540 }
1541}
1542
1543static void init_gfx_chip_info(int chip_type)
1544{
1545 u8 tmp;
1546
1547 viaparinfo->chip_info->gfx_chip_name = chip_type;
1548
1549 /* Check revision of CLE266 Chip */
1550 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
1551 /* CR4F only define in CLE266.CX chip */
1552 tmp = viafb_read_reg(VIACR, CR4F);
1553 viafb_write_reg(CR4F, VIACR, 0x55);
1554 if (viafb_read_reg(VIACR, CR4F) != 0x55)
1555 viaparinfo->chip_info->gfx_chip_revision =
1556 CLE266_REVISION_AX;
1557 else
1558 viaparinfo->chip_info->gfx_chip_revision =
1559 CLE266_REVISION_CX;
1560 /* restore orignal CR4F value */
1561 viafb_write_reg(CR4F, VIACR, tmp);
1562 }
1563
1564 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1565 tmp = viafb_read_reg(VIASR, SR43);
1566 DEBUG_MSG(KERN_INFO "SR43:%X\n", tmp);
1567 if (tmp & 0x02) {
1568 viaparinfo->chip_info->gfx_chip_revision =
1569 CX700_REVISION_700M2;
1570 } else if (tmp & 0x40) {
1571 viaparinfo->chip_info->gfx_chip_revision =
1572 CX700_REVISION_700M;
1573 } else {
1574 viaparinfo->chip_info->gfx_chip_revision =
1575 CX700_REVISION_700;
1576 }
1577 }
1578
1579 /* Determine which 2D engine we have */
1580 switch (viaparinfo->chip_info->gfx_chip_name) {
1581 case UNICHROME_VX800:
1582 case UNICHROME_VX855:
1583 case UNICHROME_VX900:
1584 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_M1;
1585 break;
1586 case UNICHROME_K8M890:
1587 case UNICHROME_P4M900:
1588 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H5;
1589 break;
1590 default:
1591 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H2;
1592 break;
1593 }
1594}
1595
1596static void init_tmds_chip_info(void)
1597{
1598 viafb_tmds_trasmitter_identify();
1599
1600 if (INTERFACE_NONE == viaparinfo->chip_info->tmds_chip_info.
1601 output_interface) {
1602 switch (viaparinfo->chip_info->gfx_chip_name) {
1603 case UNICHROME_CX700:
1604 {
1605 /* we should check support by hardware layout.*/
1606 if ((viafb_display_hardware_layout ==
1607 HW_LAYOUT_DVI_ONLY)
1608 || (viafb_display_hardware_layout ==
1609 HW_LAYOUT_LCD_DVI)) {
1610 viaparinfo->chip_info->tmds_chip_info.
1611 output_interface = INTERFACE_TMDS;
1612 } else {
1613 viaparinfo->chip_info->tmds_chip_info.
1614 output_interface =
1615 INTERFACE_NONE;
1616 }
1617 break;
1618 }
1619 case UNICHROME_K8M890:
1620 case UNICHROME_P4M900:
1621 case UNICHROME_P4M890:
1622 /* TMDS on PCIE, we set DFPLOW as default. */
1623 viaparinfo->chip_info->tmds_chip_info.output_interface =
1624 INTERFACE_DFP_LOW;
1625 break;
1626 default:
1627 {
1628 /* set DVP1 default for DVI */
1629 viaparinfo->chip_info->tmds_chip_info
1630 .output_interface = INTERFACE_DVP1;
1631 }
1632 }
1633 }
1634
1635 DEBUG_MSG(KERN_INFO "TMDS Chip = %d\n",
1636 viaparinfo->chip_info->tmds_chip_info.tmds_chip_name);
1637 viafb_init_dvi_size(&viaparinfo->shared->chip_info.tmds_chip_info,
1638 &viaparinfo->shared->tmds_setting_info);
1639}
1640
1641static void init_lvds_chip_info(void)
1642{
1643 viafb_lvds_trasmitter_identify();
1644 viafb_init_lcd_size();
1645 viafb_init_lvds_output_interface(&viaparinfo->chip_info->lvds_chip_info,
1646 viaparinfo->lvds_setting_info);
1647 if (viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name) {
1648 viafb_init_lvds_output_interface(&viaparinfo->chip_info->
1649 lvds_chip_info2, viaparinfo->lvds_setting_info2);
1650 }
1651 /*If CX700,two singel LCD, we need to reassign
1652 LCD interface to different LVDS port */
1653 if ((UNICHROME_CX700 == viaparinfo->chip_info->gfx_chip_name)
1654 && (HW_LAYOUT_LCD1_LCD2 == viafb_display_hardware_layout)) {
1655 if ((INTEGRATED_LVDS == viaparinfo->chip_info->lvds_chip_info.
1656 lvds_chip_name) && (INTEGRATED_LVDS ==
1657 viaparinfo->chip_info->
1658 lvds_chip_info2.lvds_chip_name)) {
1659 viaparinfo->chip_info->lvds_chip_info.output_interface =
1660 INTERFACE_LVDS0;
1661 viaparinfo->chip_info->lvds_chip_info2.
1662 output_interface =
1663 INTERFACE_LVDS1;
1664 }
1665 }
1666
1667 DEBUG_MSG(KERN_INFO "LVDS Chip = %d\n",
1668 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
1669 DEBUG_MSG(KERN_INFO "LVDS1 output_interface = %d\n",
1670 viaparinfo->chip_info->lvds_chip_info.output_interface);
1671 DEBUG_MSG(KERN_INFO "LVDS2 output_interface = %d\n",
1672 viaparinfo->chip_info->lvds_chip_info.output_interface);
1673}
1674
1675void viafb_init_dac(int set_iga)
1676{
1677 int i;
1678 u8 tmp;
1679
1680 if (set_iga == IGA1) {
1681 /* access Primary Display's LUT */
1682 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
1683 /* turn off LCK */
1684 viafb_write_reg_mask(SR1B, VIASR, 0x00, BIT7 + BIT6);
1685 for (i = 0; i < 256; i++) {
1686 write_dac_reg(i, palLUT_table[i].red,
1687 palLUT_table[i].green,
1688 palLUT_table[i].blue);
1689 }
1690 /* turn on LCK */
1691 viafb_write_reg_mask(SR1B, VIASR, 0xC0, BIT7 + BIT6);
1692 } else {
1693 tmp = viafb_read_reg(VIACR, CR6A);
1694 /* access Secondary Display's LUT */
1695 viafb_write_reg_mask(CR6A, VIACR, 0x40, BIT6);
1696 viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
1697 for (i = 0; i < 256; i++) {
1698 write_dac_reg(i, palLUT_table[i].red,
1699 palLUT_table[i].green,
1700 palLUT_table[i].blue);
1701 }
1702 /* set IGA1 DAC for default */
1703 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
1704 viafb_write_reg(CR6A, VIACR, tmp);
1705 }
1706}
1707
1708static void device_screen_off(void)
1709{
1710 /* turn off CRT screen (IGA1) */
1711 viafb_write_reg_mask(SR01, VIASR, 0x20, BIT5);
1712}
1713
1714static void device_screen_on(void)
1715{
1716 /* turn on CRT screen (IGA1) */
1717 viafb_write_reg_mask(SR01, VIASR, 0x00, BIT5);
1718}
1719
1720static void set_display_channel(void)
1721{
1722 /*If viafb_LCD2_ON, on cx700, internal lvds's information
1723 is keeped on lvds_setting_info2 */
1724 if (viafb_LCD2_ON &&
1725 viaparinfo->lvds_setting_info2->device_lcd_dualedge) {
1726 /* For dual channel LCD: */
1727 /* Set to Dual LVDS channel. */
1728 viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
1729 } else if (viafb_LCD_ON && viafb_DVI_ON) {
1730 /* For LCD+DFP: */
1731 /* Set to LVDS1 + TMDS channel. */
1732 viafb_write_reg_mask(CRD2, VIACR, 0x10, BIT4 + BIT5);
1733 } else if (viafb_DVI_ON) {
1734 /* Set to single TMDS channel. */
1735 viafb_write_reg_mask(CRD2, VIACR, 0x30, BIT4 + BIT5);
1736 } else if (viafb_LCD_ON) {
1737 if (viaparinfo->lvds_setting_info->device_lcd_dualedge) {
1738 /* For dual channel LCD: */
1739 /* Set to Dual LVDS channel. */
1740 viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
1741 } else {
1742 /* Set to LVDS0 + LVDS1 channel. */
1743 viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT4 + BIT5);
1744 }
1745 }
1746}
1747
1748static u8 get_sync(struct fb_var_screeninfo *var)
1749{
1750 u8 polarity = 0;
1751
1752 if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
1753 polarity |= VIA_HSYNC_NEGATIVE;
1754 if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
1755 polarity |= VIA_VSYNC_NEGATIVE;
1756 return polarity;
1757}
1758
1759static void hw_init(void)
1760{
1761 int i;
1762
1763 inb(VIAStatus);
1764 outb(0x00, VIAAR);
1765
1766 /* Write Common Setting for Video Mode */
1767 viafb_write_regx(common_vga, ARRAY_SIZE(common_vga));
1768 switch (viaparinfo->chip_info->gfx_chip_name) {
1769 case UNICHROME_CLE266:
1770 viafb_write_regx(CLE266_ModeXregs, NUM_TOTAL_CLE266_ModeXregs);
1771 break;
1772
1773 case UNICHROME_K400:
1774 viafb_write_regx(KM400_ModeXregs, NUM_TOTAL_KM400_ModeXregs);
1775 break;
1776
1777 case UNICHROME_K800:
1778 case UNICHROME_PM800:
1779 viafb_write_regx(CN400_ModeXregs, NUM_TOTAL_CN400_ModeXregs);
1780 break;
1781
1782 case UNICHROME_CN700:
1783 case UNICHROME_K8M890:
1784 case UNICHROME_P4M890:
1785 case UNICHROME_P4M900:
1786 viafb_write_regx(CN700_ModeXregs, NUM_TOTAL_CN700_ModeXregs);
1787 break;
1788
1789 case UNICHROME_CX700:
1790 case UNICHROME_VX800:
1791 viafb_write_regx(CX700_ModeXregs, NUM_TOTAL_CX700_ModeXregs);
1792 break;
1793
1794 case UNICHROME_VX855:
1795 case UNICHROME_VX900:
1796 viafb_write_regx(VX855_ModeXregs, NUM_TOTAL_VX855_ModeXregs);
1797 break;
1798 }
1799
1800 /* magic required on VX900 for correct modesetting on IGA1 */
1801 via_write_reg_mask(VIACR, 0x45, 0x00, 0x01);
1802
1803 /* probably this should go to the scaling code one day */
1804 via_write_reg_mask(VIACR, 0xFD, 0, 0x80); /* VX900 hw scale on IGA2 */
1805 viafb_write_regx(scaling_parameters, ARRAY_SIZE(scaling_parameters));
1806
1807 /* Fill VPIT Parameters */
1808 /* Write Misc Register */
1809 outb(VPIT.Misc, VIA_MISC_REG_WRITE);
1810
1811 /* Write Sequencer */
1812 for (i = 1; i <= StdSR; i++)
1813 via_write_reg(VIASR, i, VPIT.SR[i - 1]);
1814
1815 viafb_write_reg_mask(0x15, VIASR, 0xA2, 0xA2);
1816
1817 /* Write Graphic Controller */
1818 for (i = 0; i < StdGR; i++)
1819 via_write_reg(VIAGR, i, VPIT.GR[i]);
1820
1821 /* Write Attribute Controller */
1822 for (i = 0; i < StdAR; i++) {
1823 inb(VIAStatus);
1824 outb(i, VIAAR);
1825 outb(VPIT.AR[i], VIAAR);
1826 }
1827
1828 inb(VIAStatus);
1829 outb(0x20, VIAAR);
1830
1831 load_fix_bit_crtc_reg();
1832}
1833
1834int viafb_setmode(void)
1835{
1836 int j, cxres = 0, cyres = 0;
1837 int port;
1838 u32 devices = viaparinfo->shared->iga1_devices
1839 | viaparinfo->shared->iga2_devices;
1840 u8 value, index, mask;
1841 struct fb_var_screeninfo var2;
1842
1843 device_screen_off();
1844 device_off();
1845 via_set_state(devices, VIA_STATE_OFF);
1846
1847 hw_init();
1848
1849 /* Update Patch Register */
1850
1851 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266
1852 || viaparinfo->chip_info->gfx_chip_name == UNICHROME_K400)
1853 && viafbinfo->var.xres == 1024 && viafbinfo->var.yres == 768) {
1854 for (j = 0; j < res_patch_table[0].table_length; j++) {
1855 index = res_patch_table[0].io_reg_table[j].index;
1856 port = res_patch_table[0].io_reg_table[j].port;
1857 value = res_patch_table[0].io_reg_table[j].value;
1858 mask = res_patch_table[0].io_reg_table[j].mask;
1859 viafb_write_reg_mask(index, port, value, mask);
1860 }
1861 }
1862
1863 via_set_primary_pitch(viafbinfo->fix.line_length);
1864 via_set_secondary_pitch(viafb_dual_fb ? viafbinfo1->fix.line_length
1865 : viafbinfo->fix.line_length);
1866 via_set_primary_color_depth(viaparinfo->depth);
1867 via_set_secondary_color_depth(viafb_dual_fb ? viaparinfo1->depth
1868 : viaparinfo->depth);
1869 via_set_source(viaparinfo->shared->iga1_devices, IGA1);
1870 via_set_source(viaparinfo->shared->iga2_devices, IGA2);
1871 if (viaparinfo->shared->iga2_devices)
1872 enable_second_display_channel();
1873 else
1874 disable_second_display_channel();
1875
1876 /* Update Refresh Rate Setting */
1877
1878 /* Clear On Screen */
1879
1880 if (viafb_dual_fb) {
1881 var2 = viafbinfo1->var;
1882 } else if (viafb_SAMM_ON) {
1883 viafb_fill_var_timing_info(&var2, viafb_get_best_mode(
1884 viafb_second_xres, viafb_second_yres, viafb_refresh1));
1885 cxres = viafbinfo->var.xres;
1886 cyres = viafbinfo->var.yres;
1887 var2.bits_per_pixel = viafbinfo->var.bits_per_pixel;
1888 }
1889
1890 /* CRT set mode */
1891 if (viafb_CRT_ON) {
1892 if (viaparinfo->shared->iga2_devices & VIA_CRT
1893 && viafb_SAMM_ON)
1894 viafb_fill_crtc_timing(&var2, cxres, cyres, IGA2);
1895 else
1896 viafb_fill_crtc_timing(&viafbinfo->var, 0, 0,
1897 (viaparinfo->shared->iga1_devices & VIA_CRT)
1898 ? IGA1 : IGA2);
1899
1900 /* Patch if set_hres is not 8 alignment (1366) to viafb_setmode
1901 to 8 alignment (1368),there is several pixels (2 pixels)
1902 on right side of screen. */
1903 if (viafbinfo->var.xres % 8) {
1904 viafb_unlock_crt();
1905 viafb_write_reg(CR02, VIACR,
1906 viafb_read_reg(VIACR, CR02) - 1);
1907 viafb_lock_crt();
1908 }
1909 }
1910
1911 if (viafb_DVI_ON) {
1912 if (viaparinfo->shared->tmds_setting_info.iga_path == IGA2
1913 && viafb_SAMM_ON)
1914 viafb_dvi_set_mode(&var2, cxres, cyres, IGA2);
1915 else
1916 viafb_dvi_set_mode(&viafbinfo->var, 0, 0,
1917 viaparinfo->tmds_setting_info->iga_path);
1918 }
1919
1920 if (viafb_LCD_ON) {
1921 if (viafb_SAMM_ON &&
1922 (viaparinfo->lvds_setting_info->iga_path == IGA2)) {
1923 viafb_lcd_set_mode(&var2, cxres, cyres,
1924 viaparinfo->lvds_setting_info,
1925 &viaparinfo->chip_info->lvds_chip_info);
1926 } else {
1927 /* IGA1 doesn't have LCD scaling, so set it center. */
1928 if (viaparinfo->lvds_setting_info->iga_path == IGA1) {
1929 viaparinfo->lvds_setting_info->display_method =
1930 LCD_CENTERING;
1931 }
1932 viafb_lcd_set_mode(&viafbinfo->var, 0, 0,
1933 viaparinfo->lvds_setting_info,
1934 &viaparinfo->chip_info->lvds_chip_info);
1935 }
1936 }
1937 if (viafb_LCD2_ON) {
1938 if (viafb_SAMM_ON &&
1939 (viaparinfo->lvds_setting_info2->iga_path == IGA2)) {
1940 viafb_lcd_set_mode(&var2, cxres, cyres,
1941 viaparinfo->lvds_setting_info2,
1942 &viaparinfo->chip_info->lvds_chip_info2);
1943 } else {
1944 /* IGA1 doesn't have LCD scaling, so set it center. */
1945 if (viaparinfo->lvds_setting_info2->iga_path == IGA1) {
1946 viaparinfo->lvds_setting_info2->display_method =
1947 LCD_CENTERING;
1948 }
1949 viafb_lcd_set_mode(&viafbinfo->var, 0, 0,
1950 viaparinfo->lvds_setting_info2,
1951 &viaparinfo->chip_info->lvds_chip_info2);
1952 }
1953 }
1954
1955 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
1956 && (viafb_LCD_ON || viafb_DVI_ON))
1957 set_display_channel();
1958
1959 /* If set mode normally, save resolution information for hot-plug . */
1960 if (!viafb_hotplug) {
1961 viafb_hotplug_Xres = viafbinfo->var.xres;
1962 viafb_hotplug_Yres = viafbinfo->var.yres;
1963 viafb_hotplug_bpp = viafbinfo->var.bits_per_pixel;
1964 viafb_hotplug_refresh = viafb_refresh;
1965
1966 if (viafb_DVI_ON)
1967 viafb_DeviceStatus = DVI_Device;
1968 else
1969 viafb_DeviceStatus = CRT_Device;
1970 }
1971 device_on();
1972 if (!viafb_SAMM_ON)
1973 via_set_sync_polarity(devices, get_sync(&viafbinfo->var));
1974 else {
1975 via_set_sync_polarity(viaparinfo->shared->iga1_devices,
1976 get_sync(&viafbinfo->var));
1977 via_set_sync_polarity(viaparinfo->shared->iga2_devices,
1978 get_sync(&var2));
1979 }
1980
1981 clock.set_engine_pll_state(VIA_STATE_ON);
1982 clock.set_primary_clock_source(VIA_CLKSRC_X1, true);
1983 clock.set_secondary_clock_source(VIA_CLKSRC_X1, true);
1984
1985#ifdef CONFIG_FB_VIA_X_COMPATIBILITY
1986 clock.set_primary_pll_state(VIA_STATE_ON);
1987 clock.set_primary_clock_state(VIA_STATE_ON);
1988 clock.set_secondary_pll_state(VIA_STATE_ON);
1989 clock.set_secondary_clock_state(VIA_STATE_ON);
1990#else
1991 if (viaparinfo->shared->iga1_devices) {
1992 clock.set_primary_pll_state(VIA_STATE_ON);
1993 clock.set_primary_clock_state(VIA_STATE_ON);
1994 } else {
1995 clock.set_primary_pll_state(VIA_STATE_OFF);
1996 clock.set_primary_clock_state(VIA_STATE_OFF);
1997 }
1998
1999 if (viaparinfo->shared->iga2_devices) {
2000 clock.set_secondary_pll_state(VIA_STATE_ON);
2001 clock.set_secondary_clock_state(VIA_STATE_ON);
2002 } else {
2003 clock.set_secondary_pll_state(VIA_STATE_OFF);
2004 clock.set_secondary_clock_state(VIA_STATE_OFF);
2005 }
2006#endif /*CONFIG_FB_VIA_X_COMPATIBILITY*/
2007
2008 via_set_state(devices, VIA_STATE_ON);
2009 device_screen_on();
2010 return 1;
2011}
2012
2013int viafb_get_refresh(int hres, int vres, u32 long_refresh)
2014{
2015 const struct fb_videomode *best;
2016
2017 best = viafb_get_best_mode(hres, vres, long_refresh);
2018 if (!best)
2019 return 60;
2020
2021 if (abs(best->refresh - long_refresh) > 3) {
2022 if (hres == 1200 && vres == 900)
2023 return 49; /* OLPC DCON only supports 50 Hz */
2024 else
2025 return 60;
2026 }
2027
2028 return best->refresh;
2029}
2030
2031static void device_off(void)
2032{
2033 viafb_dvi_disable();
2034 viafb_lcd_disable();
2035}
2036
2037static void device_on(void)
2038{
2039 if (viafb_DVI_ON == 1)
2040 viafb_dvi_enable();
2041 if (viafb_LCD_ON == 1)
2042 viafb_lcd_enable();
2043}
2044
2045static void enable_second_display_channel(void)
2046{
2047 /* to enable second display channel. */
2048 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2049 viafb_write_reg_mask(CR6A, VIACR, BIT7, BIT7);
2050 viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2051}
2052
2053static void disable_second_display_channel(void)
2054{
2055 /* to disable second display channel. */
2056 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2057 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT7);
2058 viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2059}
2060
2061void viafb_set_dpa_gfx(int output_interface, struct GFX_DPA_SETTING\
2062 *p_gfx_dpa_setting)
2063{
2064 switch (output_interface) {
2065 case INTERFACE_DVP0:
2066 {
2067 /* DVP0 Clock Polarity and Adjust: */
2068 viafb_write_reg_mask(CR96, VIACR,
2069 p_gfx_dpa_setting->DVP0, 0x0F);
2070
2071 /* DVP0 Clock and Data Pads Driving: */
2072 viafb_write_reg_mask(SR1E, VIASR,
2073 p_gfx_dpa_setting->DVP0ClockDri_S, BIT2);
2074 viafb_write_reg_mask(SR2A, VIASR,
2075 p_gfx_dpa_setting->DVP0ClockDri_S1,
2076 BIT4);
2077 viafb_write_reg_mask(SR1B, VIASR,
2078 p_gfx_dpa_setting->DVP0DataDri_S, BIT1);
2079 viafb_write_reg_mask(SR2A, VIASR,
2080 p_gfx_dpa_setting->DVP0DataDri_S1, BIT5);
2081 break;
2082 }
2083
2084 case INTERFACE_DVP1:
2085 {
2086 /* DVP1 Clock Polarity and Adjust: */
2087 viafb_write_reg_mask(CR9B, VIACR,
2088 p_gfx_dpa_setting->DVP1, 0x0F);
2089
2090 /* DVP1 Clock and Data Pads Driving: */
2091 viafb_write_reg_mask(SR65, VIASR,
2092 p_gfx_dpa_setting->DVP1Driving, 0x0F);
2093 break;
2094 }
2095
2096 case INTERFACE_DFP_HIGH:
2097 {
2098 viafb_write_reg_mask(CR97, VIACR,
2099 p_gfx_dpa_setting->DFPHigh, 0x0F);
2100 break;
2101 }
2102
2103 case INTERFACE_DFP_LOW:
2104 {
2105 viafb_write_reg_mask(CR99, VIACR,
2106 p_gfx_dpa_setting->DFPLow, 0x0F);
2107 break;
2108 }
2109
2110 case INTERFACE_DFP:
2111 {
2112 viafb_write_reg_mask(CR97, VIACR,
2113 p_gfx_dpa_setting->DFPHigh, 0x0F);
2114 viafb_write_reg_mask(CR99, VIACR,
2115 p_gfx_dpa_setting->DFPLow, 0x0F);
2116 break;
2117 }
2118 }
2119}
2120
2121void viafb_fill_var_timing_info(struct fb_var_screeninfo *var,
2122 const struct fb_videomode *mode)
2123{
2124 var->pixclock = mode->pixclock;
2125 var->xres = mode->xres;
2126 var->yres = mode->yres;
2127 var->left_margin = mode->left_margin;
2128 var->right_margin = mode->right_margin;
2129 var->hsync_len = mode->hsync_len;
2130 var->upper_margin = mode->upper_margin;
2131 var->lower_margin = mode->lower_margin;
2132 var->vsync_len = mode->vsync_len;
2133 var->sync = mode->sync;
2134}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 17:55:30 -0500