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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / video / fbdev / via / hw.c
blob66afd7be00cc7466685c5def2482f29b0f62dfaa
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
4 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
5
6 */
7
8 #include <linux/via-core.h>
9 #include "global.h"
10 #include "via_clock.h"
11
12 static struct pll_limit cle266_pll_limits[] = {
13 {19, 19, 4, 0},
14 {26, 102, 5, 0},
15 {53, 112, 6, 0},
16 {41, 100, 7, 0},
17 {83, 108, 8, 0},
18 {87, 118, 9, 0},
19 {95, 115, 12, 0},
20 {108, 108, 13, 0},
21 {83, 83, 17, 0},
22 {67, 98, 20, 0},
23 {121, 121, 24, 0},
24 {99, 99, 29, 0},
25 {33, 33, 3, 1},
26 {15, 23, 4, 1},
27 {37, 121, 5, 1},
28 {82, 82, 6, 1},
29 {31, 84, 7, 1},
30 {83, 83, 8, 1},
31 {76, 127, 9, 1},
32 {33, 121, 4, 2},
33 {91, 118, 5, 2},
34 {83, 109, 6, 2},
35 {90, 90, 7, 2},
36 {93, 93, 2, 3},
37 {53, 53, 3, 3},
38 {73, 117, 4, 3},
39 {101, 127, 5, 3},
40 {99, 99, 7, 3}
41 };
42
43 static struct pll_limit k800_pll_limits[] = {
44 {22, 22, 2, 0},
45 {28, 28, 3, 0},
46 {81, 112, 3, 1},
47 {86, 166, 4, 1},
48 {109, 153, 5, 1},
49 {66, 116, 3, 2},
50 {93, 137, 4, 2},
51 {117, 208, 5, 2},
52 {30, 30, 2, 3},
53 {69, 125, 3, 3},
54 {89, 161, 4, 3},
55 {121, 208, 5, 3},
56 {66, 66, 2, 4},
57 {85, 85, 3, 4},
58 {141, 161, 4, 4},
59 {177, 177, 5, 4}
60 };
61
62 static struct pll_limit cx700_pll_limits[] = {
63 {98, 98, 3, 1},
64 {86, 86, 4, 1},
65 {109, 208, 5, 1},
66 {68, 68, 2, 2},
67 {95, 116, 3, 2},
68 {93, 166, 4, 2},
69 {110, 206, 5, 2},
70 {174, 174, 7, 2},
71 {82, 109, 3, 3},
72 {117, 161, 4, 3},
73 {112, 208, 5, 3},
74 {141, 202, 5, 4}
75 };
76
77 static struct pll_limit vx855_pll_limits[] = {
78 {86, 86, 4, 1},
79 {108, 208, 5, 1},
80 {110, 208, 5, 2},
81 {83, 112, 3, 3},
82 {103, 161, 4, 3},
83 {112, 209, 5, 3},
84 {142, 161, 4, 4},
85 {141, 176, 5, 4}
86 };
87
88 /* according to VIA Technologies these values are based on experiment */
89 static struct io_reg scaling_parameters[] = {
90 {VIACR, CR7A, 0xFF, 0x01}, /* LCD Scaling Parameter 1 */
91 {VIACR, CR7B, 0xFF, 0x02}, /* LCD Scaling Parameter 2 */
92 {VIACR, CR7C, 0xFF, 0x03}, /* LCD Scaling Parameter 3 */
93 {VIACR, CR7D, 0xFF, 0x04}, /* LCD Scaling Parameter 4 */
94 {VIACR, CR7E, 0xFF, 0x07}, /* LCD Scaling Parameter 5 */
95 {VIACR, CR7F, 0xFF, 0x0A}, /* LCD Scaling Parameter 6 */
96 {VIACR, CR80, 0xFF, 0x0D}, /* LCD Scaling Parameter 7 */
97 {VIACR, CR81, 0xFF, 0x13}, /* LCD Scaling Parameter 8 */
98 {VIACR, CR82, 0xFF, 0x16}, /* LCD Scaling Parameter 9 */
99 {VIACR, CR83, 0xFF, 0x19}, /* LCD Scaling Parameter 10 */
100 {VIACR, CR84, 0xFF, 0x1C}, /* LCD Scaling Parameter 11 */
101 {VIACR, CR85, 0xFF, 0x1D}, /* LCD Scaling Parameter 12 */
102 {VIACR, CR86, 0xFF, 0x1E}, /* LCD Scaling Parameter 13 */
103 {VIACR, CR87, 0xFF, 0x1F}, /* LCD Scaling Parameter 14 */
104 };
105
106 static struct io_reg common_vga[] = {
107 {VIACR, CR07, 0x10, 0x10}, /* [0] vertical total (bit 8)
108 [1] vertical display end (bit 8)
109 [2] vertical retrace start (bit 8)
110 [3] start vertical blanking (bit 8)
111 [4] line compare (bit 8)
112 [5] vertical total (bit 9)
113 [6] vertical display end (bit 9)
114 [7] vertical retrace start (bit 9) */
115 {VIACR, CR08, 0xFF, 0x00}, /* [0-4] preset row scan
116 [5-6] byte panning */
117 {VIACR, CR09, 0xDF, 0x40}, /* [0-4] max scan line
118 [5] start vertical blanking (bit 9)
119 [6] line compare (bit 9)
120 [7] scan doubling */
121 {VIACR, CR0A, 0xFF, 0x1E}, /* [0-4] cursor start
122 [5] cursor disable */
123 {VIACR, CR0B, 0xFF, 0x00}, /* [0-4] cursor end
124 [5-6] cursor skew */
125 {VIACR, CR0E, 0xFF, 0x00}, /* [0-7] cursor location (high) */
126 {VIACR, CR0F, 0xFF, 0x00}, /* [0-7] cursor location (low) */
127 {VIACR, CR11, 0xF0, 0x80}, /* [0-3] vertical retrace end
128 [6] memory refresh bandwidth
129 [7] CRTC register protect enable */
130 {VIACR, CR14, 0xFF, 0x00}, /* [0-4] underline location
131 [5] divide memory address clock by 4
132 [6] double word addressing */
133 {VIACR, CR17, 0xFF, 0x63}, /* [0-1] mapping of display address 13-14
134 [2] divide scan line clock by 2
135 [3] divide memory address clock by 2
136 [5] address wrap
137 [6] byte mode select
138 [7] sync enable */
139 {VIACR, CR18, 0xFF, 0xFF}, /* [0-7] line compare */
140 };
141
142 static struct fifo_depth_select display_fifo_depth_reg = {
143 /* IGA1 FIFO Depth_Select */
144 {IGA1_FIFO_DEPTH_SELECT_REG_NUM, {{SR17, 0, 7} } },
145 /* IGA2 FIFO Depth_Select */
146 {IGA2_FIFO_DEPTH_SELECT_REG_NUM,
147 {{CR68, 4, 7}, {CR94, 7, 7}, {CR95, 7, 7} } }
148 };
149
150 static struct fifo_threshold_select fifo_threshold_select_reg = {
151 /* IGA1 FIFO Threshold Select */
152 {IGA1_FIFO_THRESHOLD_REG_NUM, {{SR16, 0, 5}, {SR16, 7, 7} } },
153 /* IGA2 FIFO Threshold Select */
154 {IGA2_FIFO_THRESHOLD_REG_NUM, {{CR68, 0, 3}, {CR95, 4, 6} } }
155 };
156
157 static struct fifo_high_threshold_select fifo_high_threshold_select_reg = {
158 /* IGA1 FIFO High Threshold Select */
159 {IGA1_FIFO_HIGH_THRESHOLD_REG_NUM, {{SR18, 0, 5}, {SR18, 7, 7} } },
160 /* IGA2 FIFO High Threshold Select */
161 {IGA2_FIFO_HIGH_THRESHOLD_REG_NUM, {{CR92, 0, 3}, {CR95, 0, 2} } }
162 };
163
164 static struct display_queue_expire_num display_queue_expire_num_reg = {
165 /* IGA1 Display Queue Expire Num */
166 {IGA1_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{SR22, 0, 4} } },
167 /* IGA2 Display Queue Expire Num */
168 {IGA2_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{CR94, 0, 6} } }
169 };
170
171 /* Definition Fetch Count Registers*/
172 static struct fetch_count fetch_count_reg = {
173 /* IGA1 Fetch Count Register */
174 {IGA1_FETCH_COUNT_REG_NUM, {{SR1C, 0, 7}, {SR1D, 0, 1} } },
175 /* IGA2 Fetch Count Register */
176 {IGA2_FETCH_COUNT_REG_NUM, {{CR65, 0, 7}, {CR67, 2, 3} } }
177 };
178
179 static struct rgbLUT palLUT_table[] = {
180 /* {R,G,B} */
181 /* Index 0x00~0x03 */
182 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x2A}, {0x00, 0x2A, 0x00}, {0x00,
183 0x2A,
184 0x2A},
185 /* Index 0x04~0x07 */
186 {0x2A, 0x00, 0x00}, {0x2A, 0x00, 0x2A}, {0x2A, 0x15, 0x00}, {0x2A,
187 0x2A,
188 0x2A},
189 /* Index 0x08~0x0B */
190 {0x15, 0x15, 0x15}, {0x15, 0x15, 0x3F}, {0x15, 0x3F, 0x15}, {0x15,
191 0x3F,
192 0x3F},
193 /* Index 0x0C~0x0F */
194 {0x3F, 0x15, 0x15}, {0x3F, 0x15, 0x3F}, {0x3F, 0x3F, 0x15}, {0x3F,
195 0x3F,
196 0x3F},
197 /* Index 0x10~0x13 */
198 {0x00, 0x00, 0x00}, {0x05, 0x05, 0x05}, {0x08, 0x08, 0x08}, {0x0B,
199 0x0B,
200 0x0B},
201 /* Index 0x14~0x17 */
202 {0x0E, 0x0E, 0x0E}, {0x11, 0x11, 0x11}, {0x14, 0x14, 0x14}, {0x18,
203 0x18,
204 0x18},
205 /* Index 0x18~0x1B */
206 {0x1C, 0x1C, 0x1C}, {0x20, 0x20, 0x20}, {0x24, 0x24, 0x24}, {0x28,
207 0x28,
208 0x28},
209 /* Index 0x1C~0x1F */
210 {0x2D, 0x2D, 0x2D}, {0x32, 0x32, 0x32}, {0x38, 0x38, 0x38}, {0x3F,
211 0x3F,
212 0x3F},
213 /* Index 0x20~0x23 */
214 {0x00, 0x00, 0x3F}, {0x10, 0x00, 0x3F}, {0x1F, 0x00, 0x3F}, {0x2F,
215 0x00,
216 0x3F},
217 /* Index 0x24~0x27 */
218 {0x3F, 0x00, 0x3F}, {0x3F, 0x00, 0x2F}, {0x3F, 0x00, 0x1F}, {0x3F,
219 0x00,
220 0x10},
221 /* Index 0x28~0x2B */
222 {0x3F, 0x00, 0x00}, {0x3F, 0x10, 0x00}, {0x3F, 0x1F, 0x00}, {0x3F,
223 0x2F,
224 0x00},
225 /* Index 0x2C~0x2F */
226 {0x3F, 0x3F, 0x00}, {0x2F, 0x3F, 0x00}, {0x1F, 0x3F, 0x00}, {0x10,
227 0x3F,
228 0x00},
229 /* Index 0x30~0x33 */
230 {0x00, 0x3F, 0x00}, {0x00, 0x3F, 0x10}, {0x00, 0x3F, 0x1F}, {0x00,
231 0x3F,
232 0x2F},
233 /* Index 0x34~0x37 */
234 {0x00, 0x3F, 0x3F}, {0x00, 0x2F, 0x3F}, {0x00, 0x1F, 0x3F}, {0x00,
235 0x10,
236 0x3F},
237 /* Index 0x38~0x3B */
238 {0x1F, 0x1F, 0x3F}, {0x27, 0x1F, 0x3F}, {0x2F, 0x1F, 0x3F}, {0x37,
239 0x1F,
240 0x3F},
241 /* Index 0x3C~0x3F */
242 {0x3F, 0x1F, 0x3F}, {0x3F, 0x1F, 0x37}, {0x3F, 0x1F, 0x2F}, {0x3F,
243 0x1F,
244 0x27},
245 /* Index 0x40~0x43 */
246 {0x3F, 0x1F, 0x1F}, {0x3F, 0x27, 0x1F}, {0x3F, 0x2F, 0x1F}, {0x3F,
247 0x3F,
248 0x1F},
249 /* Index 0x44~0x47 */
250 {0x3F, 0x3F, 0x1F}, {0x37, 0x3F, 0x1F}, {0x2F, 0x3F, 0x1F}, {0x27,
251 0x3F,
252 0x1F},
253 /* Index 0x48~0x4B */
254 {0x1F, 0x3F, 0x1F}, {0x1F, 0x3F, 0x27}, {0x1F, 0x3F, 0x2F}, {0x1F,
255 0x3F,
256 0x37},
257 /* Index 0x4C~0x4F */
258 {0x1F, 0x3F, 0x3F}, {0x1F, 0x37, 0x3F}, {0x1F, 0x2F, 0x3F}, {0x1F,
259 0x27,
260 0x3F},
261 /* Index 0x50~0x53 */
262 {0x2D, 0x2D, 0x3F}, {0x31, 0x2D, 0x3F}, {0x36, 0x2D, 0x3F}, {0x3A,
263 0x2D,
264 0x3F},
265 /* Index 0x54~0x57 */
266 {0x3F, 0x2D, 0x3F}, {0x3F, 0x2D, 0x3A}, {0x3F, 0x2D, 0x36}, {0x3F,
267 0x2D,
268 0x31},
269 /* Index 0x58~0x5B */
270 {0x3F, 0x2D, 0x2D}, {0x3F, 0x31, 0x2D}, {0x3F, 0x36, 0x2D}, {0x3F,
271 0x3A,
272 0x2D},
273 /* Index 0x5C~0x5F */
274 {0x3F, 0x3F, 0x2D}, {0x3A, 0x3F, 0x2D}, {0x36, 0x3F, 0x2D}, {0x31,
275 0x3F,
276 0x2D},
277 /* Index 0x60~0x63 */
278 {0x2D, 0x3F, 0x2D}, {0x2D, 0x3F, 0x31}, {0x2D, 0x3F, 0x36}, {0x2D,
279 0x3F,
280 0x3A},
281 /* Index 0x64~0x67 */
282 {0x2D, 0x3F, 0x3F}, {0x2D, 0x3A, 0x3F}, {0x2D, 0x36, 0x3F}, {0x2D,
283 0x31,
284 0x3F},
285 /* Index 0x68~0x6B */
286 {0x00, 0x00, 0x1C}, {0x07, 0x00, 0x1C}, {0x0E, 0x00, 0x1C}, {0x15,
287 0x00,
288 0x1C},
289 /* Index 0x6C~0x6F */
290 {0x1C, 0x00, 0x1C}, {0x1C, 0x00, 0x15}, {0x1C, 0x00, 0x0E}, {0x1C,
291 0x00,
292 0x07},
293 /* Index 0x70~0x73 */
294 {0x1C, 0x00, 0x00}, {0x1C, 0x07, 0x00}, {0x1C, 0x0E, 0x00}, {0x1C,
295 0x15,
296 0x00},
297 /* Index 0x74~0x77 */
298 {0x1C, 0x1C, 0x00}, {0x15, 0x1C, 0x00}, {0x0E, 0x1C, 0x00}, {0x07,
299 0x1C,
300 0x00},
301 /* Index 0x78~0x7B */
302 {0x00, 0x1C, 0x00}, {0x00, 0x1C, 0x07}, {0x00, 0x1C, 0x0E}, {0x00,
303 0x1C,
304 0x15},
305 /* Index 0x7C~0x7F */
306 {0x00, 0x1C, 0x1C}, {0x00, 0x15, 0x1C}, {0x00, 0x0E, 0x1C}, {0x00,
307 0x07,
308 0x1C},
309 /* Index 0x80~0x83 */
310 {0x0E, 0x0E, 0x1C}, {0x11, 0x0E, 0x1C}, {0x15, 0x0E, 0x1C}, {0x18,
311 0x0E,
312 0x1C},
313 /* Index 0x84~0x87 */
314 {0x1C, 0x0E, 0x1C}, {0x1C, 0x0E, 0x18}, {0x1C, 0x0E, 0x15}, {0x1C,
315 0x0E,
316 0x11},
317 /* Index 0x88~0x8B */
318 {0x1C, 0x0E, 0x0E}, {0x1C, 0x11, 0x0E}, {0x1C, 0x15, 0x0E}, {0x1C,
319 0x18,
320 0x0E},
321 /* Index 0x8C~0x8F */
322 {0x1C, 0x1C, 0x0E}, {0x18, 0x1C, 0x0E}, {0x15, 0x1C, 0x0E}, {0x11,
323 0x1C,
324 0x0E},
325 /* Index 0x90~0x93 */
326 {0x0E, 0x1C, 0x0E}, {0x0E, 0x1C, 0x11}, {0x0E, 0x1C, 0x15}, {0x0E,
327 0x1C,
328 0x18},
329 /* Index 0x94~0x97 */
330 {0x0E, 0x1C, 0x1C}, {0x0E, 0x18, 0x1C}, {0x0E, 0x15, 0x1C}, {0x0E,
331 0x11,
332 0x1C},
333 /* Index 0x98~0x9B */
334 {0x14, 0x14, 0x1C}, {0x16, 0x14, 0x1C}, {0x18, 0x14, 0x1C}, {0x1A,
335 0x14,
336 0x1C},
337 /* Index 0x9C~0x9F */
338 {0x1C, 0x14, 0x1C}, {0x1C, 0x14, 0x1A}, {0x1C, 0x14, 0x18}, {0x1C,
339 0x14,
340 0x16},
341 /* Index 0xA0~0xA3 */
342 {0x1C, 0x14, 0x14}, {0x1C, 0x16, 0x14}, {0x1C, 0x18, 0x14}, {0x1C,
343 0x1A,
344 0x14},
345 /* Index 0xA4~0xA7 */
346 {0x1C, 0x1C, 0x14}, {0x1A, 0x1C, 0x14}, {0x18, 0x1C, 0x14}, {0x16,
347 0x1C,
348 0x14},
349 /* Index 0xA8~0xAB */
350 {0x14, 0x1C, 0x14}, {0x14, 0x1C, 0x16}, {0x14, 0x1C, 0x18}, {0x14,
351 0x1C,
352 0x1A},
353 /* Index 0xAC~0xAF */
354 {0x14, 0x1C, 0x1C}, {0x14, 0x1A, 0x1C}, {0x14, 0x18, 0x1C}, {0x14,
355 0x16,
356 0x1C},
357 /* Index 0xB0~0xB3 */
358 {0x00, 0x00, 0x10}, {0x04, 0x00, 0x10}, {0x08, 0x00, 0x10}, {0x0C,
359 0x00,
360 0x10},
361 /* Index 0xB4~0xB7 */
362 {0x10, 0x00, 0x10}, {0x10, 0x00, 0x0C}, {0x10, 0x00, 0x08}, {0x10,
363 0x00,
364 0x04},
365 /* Index 0xB8~0xBB */
366 {0x10, 0x00, 0x00}, {0x10, 0x04, 0x00}, {0x10, 0x08, 0x00}, {0x10,
367 0x0C,
368 0x00},
369 /* Index 0xBC~0xBF */
370 {0x10, 0x10, 0x00}, {0x0C, 0x10, 0x00}, {0x08, 0x10, 0x00}, {0x04,
371 0x10,
372 0x00},
373 /* Index 0xC0~0xC3 */
374 {0x00, 0x10, 0x00}, {0x00, 0x10, 0x04}, {0x00, 0x10, 0x08}, {0x00,
375 0x10,
376 0x0C},
377 /* Index 0xC4~0xC7 */
378 {0x00, 0x10, 0x10}, {0x00, 0x0C, 0x10}, {0x00, 0x08, 0x10}, {0x00,
379 0x04,
380 0x10},
381 /* Index 0xC8~0xCB */
382 {0x08, 0x08, 0x10}, {0x0A, 0x08, 0x10}, {0x0C, 0x08, 0x10}, {0x0E,
383 0x08,
384 0x10},
385 /* Index 0xCC~0xCF */
386 {0x10, 0x08, 0x10}, {0x10, 0x08, 0x0E}, {0x10, 0x08, 0x0C}, {0x10,
387 0x08,
388 0x0A},
389 /* Index 0xD0~0xD3 */
390 {0x10, 0x08, 0x08}, {0x10, 0x0A, 0x08}, {0x10, 0x0C, 0x08}, {0x10,
391 0x0E,
392 0x08},
393 /* Index 0xD4~0xD7 */
394 {0x10, 0x10, 0x08}, {0x0E, 0x10, 0x08}, {0x0C, 0x10, 0x08}, {0x0A,
395 0x10,
396 0x08},
397 /* Index 0xD8~0xDB */
398 {0x08, 0x10, 0x08}, {0x08, 0x10, 0x0A}, {0x08, 0x10, 0x0C}, {0x08,
399 0x10,
400 0x0E},
401 /* Index 0xDC~0xDF */
402 {0x08, 0x10, 0x10}, {0x08, 0x0E, 0x10}, {0x08, 0x0C, 0x10}, {0x08,
403 0x0A,
404 0x10},
405 /* Index 0xE0~0xE3 */
406 {0x0B, 0x0B, 0x10}, {0x0C, 0x0B, 0x10}, {0x0D, 0x0B, 0x10}, {0x0F,
407 0x0B,
408 0x10},
409 /* Index 0xE4~0xE7 */
410 {0x10, 0x0B, 0x10}, {0x10, 0x0B, 0x0F}, {0x10, 0x0B, 0x0D}, {0x10,
411 0x0B,
412 0x0C},
413 /* Index 0xE8~0xEB */
414 {0x10, 0x0B, 0x0B}, {0x10, 0x0C, 0x0B}, {0x10, 0x0D, 0x0B}, {0x10,
415 0x0F,
416 0x0B},
417 /* Index 0xEC~0xEF */
418 {0x10, 0x10, 0x0B}, {0x0F, 0x10, 0x0B}, {0x0D, 0x10, 0x0B}, {0x0C,
419 0x10,
420 0x0B},
421 /* Index 0xF0~0xF3 */
422 {0x0B, 0x10, 0x0B}, {0x0B, 0x10, 0x0C}, {0x0B, 0x10, 0x0D}, {0x0B,
423 0x10,
424 0x0F},
425 /* Index 0xF4~0xF7 */
426 {0x0B, 0x10, 0x10}, {0x0B, 0x0F, 0x10}, {0x0B, 0x0D, 0x10}, {0x0B,
427 0x0C,
428 0x10},
429 /* Index 0xF8~0xFB */
430 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
431 0x00,
432 0x00},
433 /* Index 0xFC~0xFF */
434 {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
435 0x00,
436 0x00}
437 };
438
439 static struct via_device_mapping device_mapping[] = {
440 {VIA_LDVP0, "LDVP0"},
441 {VIA_LDVP1, "LDVP1"},
442 {VIA_DVP0, "DVP0"},
443 {VIA_CRT, "CRT"},
444 {VIA_DVP1, "DVP1"},
445 {VIA_LVDS1, "LVDS1"},
446 {VIA_LVDS2, "LVDS2"}
447 };
448
449 /* structure with function pointers to support clock control */
450 static struct via_clock clock;
451
452 static void load_fix_bit_crtc_reg(void);
453 static void init_gfx_chip_info(int chip_type);
454 static void init_tmds_chip_info(void);
455 static void init_lvds_chip_info(void);
456 static void device_screen_off(void);
457 static void device_screen_on(void);
458 static void set_display_channel(void);
459 static void device_off(void);
460 static void device_on(void);
461 static void enable_second_display_channel(void);
462 static void disable_second_display_channel(void);
463
464 void viafb_lock_crt(void)
465 {
466 viafb_write_reg_mask(CR11, VIACR, BIT7, BIT7);
467 }
468
469 void viafb_unlock_crt(void)
470 {
471 viafb_write_reg_mask(CR11, VIACR, 0, BIT7);
472 viafb_write_reg_mask(CR47, VIACR, 0, BIT0);
473 }
474
475 static void write_dac_reg(u8 index, u8 r, u8 g, u8 b)
476 {
477 outb(index, LUT_INDEX_WRITE);
478 outb(r, LUT_DATA);
479 outb(g, LUT_DATA);
480 outb(b, LUT_DATA);
481 }
482
483 static u32 get_dvi_devices(int output_interface)
484 {
485 switch (output_interface) {
486 case INTERFACE_DVP0:
487 return VIA_DVP0 | VIA_LDVP0;
488
489 case INTERFACE_DVP1:
490 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
491 return VIA_LDVP1;
492 else
493 return VIA_DVP1;
494
495 case INTERFACE_DFP_HIGH:
496 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
497 return 0;
498 else
499 return VIA_LVDS2 | VIA_DVP0;
500
501 case INTERFACE_DFP_LOW:
502 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
503 return 0;
504 else
505 return VIA_DVP1 | VIA_LVDS1;
506
507 case INTERFACE_TMDS:
508 return VIA_LVDS1;
509 }
510
511 return 0;
512 }
513
514 static u32 get_lcd_devices(int output_interface)
515 {
516 switch (output_interface) {
517 case INTERFACE_DVP0:
518 return VIA_DVP0;
519
520 case INTERFACE_DVP1:
521 return VIA_DVP1;
522
523 case INTERFACE_DFP_HIGH:
524 return VIA_LVDS2 | VIA_DVP0;
525
526 case INTERFACE_DFP_LOW:
527 return VIA_LVDS1 | VIA_DVP1;
528
529 case INTERFACE_DFP:
530 return VIA_LVDS1 | VIA_LVDS2;
531
532 case INTERFACE_LVDS0:
533 case INTERFACE_LVDS0LVDS1:
534 return VIA_LVDS1;
535
536 case INTERFACE_LVDS1:
537 return VIA_LVDS2;
538 }
539
540 return 0;
541 }
542
543 /*Set IGA path for each device*/
544 void viafb_set_iga_path(void)
545 {
546 int crt_iga_path = 0;
547
548 if (viafb_SAMM_ON == 1) {
549 if (viafb_CRT_ON) {
550 if (viafb_primary_dev == CRT_Device)
551 crt_iga_path = IGA1;
552 else
553 crt_iga_path = IGA2;
554 }
555
556 if (viafb_DVI_ON) {
557 if (viafb_primary_dev == DVI_Device)
558 viaparinfo->tmds_setting_info->iga_path = IGA1;
559 else
560 viaparinfo->tmds_setting_info->iga_path = IGA2;
561 }
562
563 if (viafb_LCD_ON) {
564 if (viafb_primary_dev == LCD_Device) {
565 if (viafb_dual_fb &&
566 (viaparinfo->chip_info->gfx_chip_name ==
567 UNICHROME_CLE266)) {
568 viaparinfo->
569 lvds_setting_info->iga_path = IGA2;
570 crt_iga_path = IGA1;
571 viaparinfo->
572 tmds_setting_info->iga_path = IGA1;
573 } else
574 viaparinfo->
575 lvds_setting_info->iga_path = IGA1;
576 } else {
577 viaparinfo->lvds_setting_info->iga_path = IGA2;
578 }
579 }
580 if (viafb_LCD2_ON) {
581 if (LCD2_Device == viafb_primary_dev)
582 viaparinfo->lvds_setting_info2->iga_path = IGA1;
583 else
584 viaparinfo->lvds_setting_info2->iga_path = IGA2;
585 }
586 } else {
587 viafb_SAMM_ON = 0;
588
589 if (viafb_CRT_ON && viafb_LCD_ON) {
590 crt_iga_path = IGA1;
591 viaparinfo->lvds_setting_info->iga_path = IGA2;
592 } else if (viafb_CRT_ON && viafb_DVI_ON) {
593 crt_iga_path = IGA1;
594 viaparinfo->tmds_setting_info->iga_path = IGA2;
595 } else if (viafb_LCD_ON && viafb_DVI_ON) {
596 viaparinfo->tmds_setting_info->iga_path = IGA1;
597 viaparinfo->lvds_setting_info->iga_path = IGA2;
598 } else if (viafb_LCD_ON && viafb_LCD2_ON) {
599 viaparinfo->lvds_setting_info->iga_path = IGA2;
600 viaparinfo->lvds_setting_info2->iga_path = IGA2;
601 } else if (viafb_CRT_ON) {
602 crt_iga_path = IGA1;
603 } else if (viafb_LCD_ON) {
604 viaparinfo->lvds_setting_info->iga_path = IGA2;
605 } else if (viafb_DVI_ON) {
606 viaparinfo->tmds_setting_info->iga_path = IGA1;
607 }
608 }
609
610 viaparinfo->shared->iga1_devices = 0;
611 viaparinfo->shared->iga2_devices = 0;
612 if (viafb_CRT_ON) {
613 if (crt_iga_path == IGA1)
614 viaparinfo->shared->iga1_devices |= VIA_CRT;
615 else
616 viaparinfo->shared->iga2_devices |= VIA_CRT;
617 }
618
619 if (viafb_DVI_ON) {
620 if (viaparinfo->tmds_setting_info->iga_path == IGA1)
621 viaparinfo->shared->iga1_devices |= get_dvi_devices(
622 viaparinfo->chip_info->
623 tmds_chip_info.output_interface);
624 else
625 viaparinfo->shared->iga2_devices |= get_dvi_devices(
626 viaparinfo->chip_info->
627 tmds_chip_info.output_interface);
628 }
629
630 if (viafb_LCD_ON) {
631 if (viaparinfo->lvds_setting_info->iga_path == IGA1)
632 viaparinfo->shared->iga1_devices |= get_lcd_devices(
633 viaparinfo->chip_info->
634 lvds_chip_info.output_interface);
635 else
636 viaparinfo->shared->iga2_devices |= get_lcd_devices(
637 viaparinfo->chip_info->
638 lvds_chip_info.output_interface);
639 }
640
641 if (viafb_LCD2_ON) {
642 if (viaparinfo->lvds_setting_info2->iga_path == IGA1)
643 viaparinfo->shared->iga1_devices |= get_lcd_devices(
644 viaparinfo->chip_info->
645 lvds_chip_info2.output_interface);
646 else
647 viaparinfo->shared->iga2_devices |= get_lcd_devices(
648 viaparinfo->chip_info->
649 lvds_chip_info2.output_interface);
650 }
651
652 /* looks like the OLPC has its display wired to DVP1 and LVDS2 */
653 if (machine_is_olpc())
654 viaparinfo->shared->iga2_devices = VIA_DVP1 | VIA_LVDS2;
655 }
656
657 static void set_color_register(u8 index, u8 red, u8 green, u8 blue)
658 {
659 outb(0xFF, 0x3C6); /* bit mask of palette */
660 outb(index, 0x3C8);
661 outb(red, 0x3C9);
662 outb(green, 0x3C9);
663 outb(blue, 0x3C9);
664 }
665
666 void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue)
667 {
668 viafb_write_reg_mask(0x1A, VIASR, 0x00, 0x01);
669 set_color_register(index, red, green, blue);
670 }
671
672 void viafb_set_secondary_color_register(u8 index, u8 red, u8 green, u8 blue)
673 {
674 viafb_write_reg_mask(0x1A, VIASR, 0x01, 0x01);
675 set_color_register(index, red, green, blue);
676 }
677
678 static void set_source_common(u8 index, u8 offset, u8 iga)
679 {
680 u8 value, mask = 1 << offset;
681
682 switch (iga) {
683 case IGA1:
684 value = 0x00;
685 break;
686 case IGA2:
687 value = mask;
688 break;
689 default:
690 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
691 return;
692 }
693
694 via_write_reg_mask(VIACR, index, value, mask);
695 }
696
697 static void set_crt_source(u8 iga)
698 {
699 u8 value;
700
701 switch (iga) {
702 case IGA1:
703 value = 0x00;
704 break;
705 case IGA2:
706 value = 0x40;
707 break;
708 default:
709 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
710 return;
711 }
712
713 via_write_reg_mask(VIASR, 0x16, value, 0x40);
714 }
715
716 static inline void set_ldvp0_source(u8 iga)
717 {
718 set_source_common(0x6C, 7, iga);
719 }
720
721 static inline void set_ldvp1_source(u8 iga)
722 {
723 set_source_common(0x93, 7, iga);
724 }
725
726 static inline void set_dvp0_source(u8 iga)
727 {
728 set_source_common(0x96, 4, iga);
729 }
730
731 static inline void set_dvp1_source(u8 iga)
732 {
733 set_source_common(0x9B, 4, iga);
734 }
735
736 static inline void set_lvds1_source(u8 iga)
737 {
738 set_source_common(0x99, 4, iga);
739 }
740
741 static inline void set_lvds2_source(u8 iga)
742 {
743 set_source_common(0x97, 4, iga);
744 }
745
746 void via_set_source(u32 devices, u8 iga)
747 {
748 if (devices & VIA_LDVP0)
749 set_ldvp0_source(iga);
750 if (devices & VIA_LDVP1)
751 set_ldvp1_source(iga);
752 if (devices & VIA_DVP0)
753 set_dvp0_source(iga);
754 if (devices & VIA_CRT)
755 set_crt_source(iga);
756 if (devices & VIA_DVP1)
757 set_dvp1_source(iga);
758 if (devices & VIA_LVDS1)
759 set_lvds1_source(iga);
760 if (devices & VIA_LVDS2)
761 set_lvds2_source(iga);
762 }
763
764 static void set_crt_state(u8 state)
765 {
766 u8 value;
767
768 switch (state) {
769 case VIA_STATE_ON:
770 value = 0x00;
771 break;
772 case VIA_STATE_STANDBY:
773 value = 0x10;
774 break;
775 case VIA_STATE_SUSPEND:
776 value = 0x20;
777 break;
778 case VIA_STATE_OFF:
779 value = 0x30;
780 break;
781 default:
782 return;
783 }
784
785 via_write_reg_mask(VIACR, 0x36, value, 0x30);
786 }
787
788 static void set_dvp0_state(u8 state)
789 {
790 u8 value;
791
792 switch (state) {
793 case VIA_STATE_ON:
794 value = 0xC0;
795 break;
796 case VIA_STATE_OFF:
797 value = 0x00;
798 break;
799 default:
800 return;
801 }
802
803 via_write_reg_mask(VIASR, 0x1E, value, 0xC0);
804 }
805
806 static void set_dvp1_state(u8 state)
807 {
808 u8 value;
809
810 switch (state) {
811 case VIA_STATE_ON:
812 value = 0x30;
813 break;
814 case VIA_STATE_OFF:
815 value = 0x00;
816 break;
817 default:
818 return;
819 }
820
821 via_write_reg_mask(VIASR, 0x1E, value, 0x30);
822 }
823
824 static void set_lvds1_state(u8 state)
825 {
826 u8 value;
827
828 switch (state) {
829 case VIA_STATE_ON:
830 value = 0x03;
831 break;
832 case VIA_STATE_OFF:
833 value = 0x00;
834 break;
835 default:
836 return;
837 }
838
839 via_write_reg_mask(VIASR, 0x2A, value, 0x03);
840 }
841
842 static void set_lvds2_state(u8 state)
843 {
844 u8 value;
845
846 switch (state) {
847 case VIA_STATE_ON:
848 value = 0x0C;
849 break;
850 case VIA_STATE_OFF:
851 value = 0x00;
852 break;
853 default:
854 return;
855 }
856
857 via_write_reg_mask(VIASR, 0x2A, value, 0x0C);
858 }
859
860 void via_set_state(u32 devices, u8 state)
861 {
862 /*
863 TODO: Can we enable/disable these devices? How?
864 if (devices & VIA_LDVP0)
865 if (devices & VIA_LDVP1)
866 */
867 if (devices & VIA_DVP0)
868 set_dvp0_state(state);
869 if (devices & VIA_CRT)
870 set_crt_state(state);
871 if (devices & VIA_DVP1)
872 set_dvp1_state(state);
873 if (devices & VIA_LVDS1)
874 set_lvds1_state(state);
875 if (devices & VIA_LVDS2)
876 set_lvds2_state(state);
877 }
878
879 void via_set_sync_polarity(u32 devices, u8 polarity)
880 {
881 if (polarity & ~(VIA_HSYNC_NEGATIVE | VIA_VSYNC_NEGATIVE)) {
882 printk(KERN_WARNING "viafb: Unsupported polarity: %d\n",
883 polarity);
884 return;
885 }
886
887 if (devices & VIA_CRT)
888 via_write_misc_reg_mask(polarity << 6, 0xC0);
889 if (devices & VIA_DVP1)
890 via_write_reg_mask(VIACR, 0x9B, polarity << 5, 0x60);
891 if (devices & VIA_LVDS1)
892 via_write_reg_mask(VIACR, 0x99, polarity << 5, 0x60);
893 if (devices & VIA_LVDS2)
894 via_write_reg_mask(VIACR, 0x97, polarity << 5, 0x60);
895 }
896
897 u32 via_parse_odev(char *input, char **end)
898 {
899 char *ptr = input;
900 u32 odev = 0;
901 bool next = true;
902 int i, len;
903
904 while (next) {
905 next = false;
906 for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
907 len = strlen(device_mapping[i].name);
908 if (!strncmp(ptr, device_mapping[i].name, len)) {
909 odev |= device_mapping[i].device;
910 ptr += len;
911 if (*ptr == ',') {
912 ptr++;
913 next = true;
914 }
915 }
916 }
917 }
918
919 *end = ptr;
920 return odev;
921 }
922
923 void via_odev_to_seq(struct seq_file *m, u32 odev)
924 {
925 int i, count = 0;
926
927 for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
928 if (odev & device_mapping[i].device) {
929 if (count > 0)
930 seq_putc(m, ',');
931
932 seq_puts(m, device_mapping[i].name);
933 count++;
934 }
935 }
936
937 seq_putc(m, '\n');
938 }
939
940 static void load_fix_bit_crtc_reg(void)
941 {
942 viafb_unlock_crt();
943
944 /* always set to 1 */
945 viafb_write_reg_mask(CR03, VIACR, 0x80, BIT7);
946 /* line compare should set all bits = 1 (extend modes) */
947 viafb_write_reg_mask(CR35, VIACR, 0x10, BIT4);
948 /* line compare should set all bits = 1 (extend modes) */
949 viafb_write_reg_mask(CR33, VIACR, 0x06, BIT0 + BIT1 + BIT2);
950 /*viafb_write_reg_mask(CR32, VIACR, 0x01, BIT0); */
951
952 viafb_lock_crt();
953
954 /* If K8M800, enable Prefetch Mode. */
955 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
956 || (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890))
957 viafb_write_reg_mask(CR33, VIACR, 0x08, BIT3);
958 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
959 && (viaparinfo->chip_info->gfx_chip_revision == CLE266_REVISION_AX))
960 viafb_write_reg_mask(SR1A, VIASR, 0x02, BIT1);
961
962 }
963
964 void viafb_load_reg(int timing_value, int viafb_load_reg_num,
965 struct io_register *reg,
966 int io_type)
967 {
968 int reg_mask;
969 int bit_num = 0;
970 int data;
971 int i, j;
972 int shift_next_reg;
973 int start_index, end_index, cr_index;
974 u16 get_bit;
975
976 for (i = 0; i < viafb_load_reg_num; i++) {
977 reg_mask = 0;
978 data = 0;
979 start_index = reg[i].start_bit;
980 end_index = reg[i].end_bit;
981 cr_index = reg[i].io_addr;
982
983 shift_next_reg = bit_num;
984 for (j = start_index; j <= end_index; j++) {
985 /*if (bit_num==8) timing_value = timing_value >>8; */
986 reg_mask = reg_mask | (BIT0 << j);
987 get_bit = (timing_value & (BIT0 << bit_num));
988 data =
989 data | ((get_bit >> shift_next_reg) << start_index);
990 bit_num++;
991 }
992 if (io_type == VIACR)
993 viafb_write_reg_mask(cr_index, VIACR, data, reg_mask);
994 else
995 viafb_write_reg_mask(cr_index, VIASR, data, reg_mask);
996 }
997
998 }
999
1000 /* Write Registers */
1001 void viafb_write_regx(struct io_reg RegTable[], int ItemNum)
1002 {
1003 int i;
1004
1005 /*DEBUG_MSG(KERN_INFO "Table Size : %x!!\n",ItemNum ); */
1006
1007 for (i = 0; i < ItemNum; i++)
1008 via_write_reg_mask(RegTable[i].port, RegTable[i].index,
1009 RegTable[i].value, RegTable[i].mask);
1010 }
1011
1012 void viafb_load_fetch_count_reg(int h_addr, int bpp_byte, int set_iga)
1013 {
1014 int reg_value;
1015 int viafb_load_reg_num;
1016 struct io_register *reg = NULL;
1017
1018 switch (set_iga) {
1019 case IGA1:
1020 reg_value = IGA1_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1021 viafb_load_reg_num = fetch_count_reg.
1022 iga1_fetch_count_reg.reg_num;
1023 reg = fetch_count_reg.iga1_fetch_count_reg.reg;
1024 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1025 break;
1026 case IGA2:
1027 reg_value = IGA2_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1028 viafb_load_reg_num = fetch_count_reg.
1029 iga2_fetch_count_reg.reg_num;
1030 reg = fetch_count_reg.iga2_fetch_count_reg.reg;
1031 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1032 break;
1033 }
1034
1035 }
1036
1037 void viafb_load_FIFO_reg(int set_iga, int hor_active, int ver_active)
1038 {
1039 int reg_value;
1040 int viafb_load_reg_num;
1041 struct io_register *reg = NULL;
1042 int iga1_fifo_max_depth = 0, iga1_fifo_threshold =
1043 0, iga1_fifo_high_threshold = 0, iga1_display_queue_expire_num = 0;
1044 int iga2_fifo_max_depth = 0, iga2_fifo_threshold =
1045 0, iga2_fifo_high_threshold = 0, iga2_display_queue_expire_num = 0;
1046
1047 if (set_iga == IGA1) {
1048 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1049 iga1_fifo_max_depth = K800_IGA1_FIFO_MAX_DEPTH;
1050 iga1_fifo_threshold = K800_IGA1_FIFO_THRESHOLD;
1051 iga1_fifo_high_threshold =
1052 K800_IGA1_FIFO_HIGH_THRESHOLD;
1053 /* If resolution > 1280x1024, expire length = 64, else
1054 expire length = 128 */
1055 if ((hor_active > 1280) && (ver_active > 1024))
1056 iga1_display_queue_expire_num = 16;
1057 else
1058 iga1_display_queue_expire_num =
1059 K800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1060
1061 }
1062
1063 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1064 iga1_fifo_max_depth = P880_IGA1_FIFO_MAX_DEPTH;
1065 iga1_fifo_threshold = P880_IGA1_FIFO_THRESHOLD;
1066 iga1_fifo_high_threshold =
1067 P880_IGA1_FIFO_HIGH_THRESHOLD;
1068 iga1_display_queue_expire_num =
1069 P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1070
1071 /* If resolution > 1280x1024, expire length = 64, else
1072 expire length = 128 */
1073 if ((hor_active > 1280) && (ver_active > 1024))
1074 iga1_display_queue_expire_num = 16;
1075 else
1076 iga1_display_queue_expire_num =
1077 P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1078 }
1079
1080 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1081 iga1_fifo_max_depth = CN700_IGA1_FIFO_MAX_DEPTH;
1082 iga1_fifo_threshold = CN700_IGA1_FIFO_THRESHOLD;
1083 iga1_fifo_high_threshold =
1084 CN700_IGA1_FIFO_HIGH_THRESHOLD;
1085
1086 /* If resolution > 1280x1024, expire length = 64,
1087 else 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 CN700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1093 }
1094
1095 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1096 iga1_fifo_max_depth = CX700_IGA1_FIFO_MAX_DEPTH;
1097 iga1_fifo_threshold = CX700_IGA1_FIFO_THRESHOLD;
1098 iga1_fifo_high_threshold =
1099 CX700_IGA1_FIFO_HIGH_THRESHOLD;
1100 iga1_display_queue_expire_num =
1101 CX700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1102 }
1103
1104 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1105 iga1_fifo_max_depth = K8M890_IGA1_FIFO_MAX_DEPTH;
1106 iga1_fifo_threshold = K8M890_IGA1_FIFO_THRESHOLD;
1107 iga1_fifo_high_threshold =
1108 K8M890_IGA1_FIFO_HIGH_THRESHOLD;
1109 iga1_display_queue_expire_num =
1110 K8M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1111 }
1112
1113 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1114 iga1_fifo_max_depth = P4M890_IGA1_FIFO_MAX_DEPTH;
1115 iga1_fifo_threshold = P4M890_IGA1_FIFO_THRESHOLD;
1116 iga1_fifo_high_threshold =
1117 P4M890_IGA1_FIFO_HIGH_THRESHOLD;
1118 iga1_display_queue_expire_num =
1119 P4M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1120 }
1121
1122 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1123 iga1_fifo_max_depth = P4M900_IGA1_FIFO_MAX_DEPTH;
1124 iga1_fifo_threshold = P4M900_IGA1_FIFO_THRESHOLD;
1125 iga1_fifo_high_threshold =
1126 P4M900_IGA1_FIFO_HIGH_THRESHOLD;
1127 iga1_display_queue_expire_num =
1128 P4M900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1129 }
1130
1131 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1132 iga1_fifo_max_depth = VX800_IGA1_FIFO_MAX_DEPTH;
1133 iga1_fifo_threshold = VX800_IGA1_FIFO_THRESHOLD;
1134 iga1_fifo_high_threshold =
1135 VX800_IGA1_FIFO_HIGH_THRESHOLD;
1136 iga1_display_queue_expire_num =
1137 VX800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1138 }
1139
1140 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1141 iga1_fifo_max_depth = VX855_IGA1_FIFO_MAX_DEPTH;
1142 iga1_fifo_threshold = VX855_IGA1_FIFO_THRESHOLD;
1143 iga1_fifo_high_threshold =
1144 VX855_IGA1_FIFO_HIGH_THRESHOLD;
1145 iga1_display_queue_expire_num =
1146 VX855_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1147 }
1148
1149 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1150 iga1_fifo_max_depth = VX900_IGA1_FIFO_MAX_DEPTH;
1151 iga1_fifo_threshold = VX900_IGA1_FIFO_THRESHOLD;
1152 iga1_fifo_high_threshold =
1153 VX900_IGA1_FIFO_HIGH_THRESHOLD;
1154 iga1_display_queue_expire_num =
1155 VX900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1156 }
1157
1158 /* Set Display FIFO Depath Select */
1159 reg_value = IGA1_FIFO_DEPTH_SELECT_FORMULA(iga1_fifo_max_depth);
1160 viafb_load_reg_num =
1161 display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg_num;
1162 reg = display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg;
1163 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1164
1165 /* Set Display FIFO Threshold Select */
1166 reg_value = IGA1_FIFO_THRESHOLD_FORMULA(iga1_fifo_threshold);
1167 viafb_load_reg_num =
1168 fifo_threshold_select_reg.
1169 iga1_fifo_threshold_select_reg.reg_num;
1170 reg =
1171 fifo_threshold_select_reg.
1172 iga1_fifo_threshold_select_reg.reg;
1173 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1174
1175 /* Set FIFO High Threshold Select */
1176 reg_value =
1177 IGA1_FIFO_HIGH_THRESHOLD_FORMULA(iga1_fifo_high_threshold);
1178 viafb_load_reg_num =
1179 fifo_high_threshold_select_reg.
1180 iga1_fifo_high_threshold_select_reg.reg_num;
1181 reg =
1182 fifo_high_threshold_select_reg.
1183 iga1_fifo_high_threshold_select_reg.reg;
1184 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1185
1186 /* Set Display Queue Expire Num */
1187 reg_value =
1188 IGA1_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1189 (iga1_display_queue_expire_num);
1190 viafb_load_reg_num =
1191 display_queue_expire_num_reg.
1192 iga1_display_queue_expire_num_reg.reg_num;
1193 reg =
1194 display_queue_expire_num_reg.
1195 iga1_display_queue_expire_num_reg.reg;
1196 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1197
1198 } else {
1199 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1200 iga2_fifo_max_depth = K800_IGA2_FIFO_MAX_DEPTH;
1201 iga2_fifo_threshold = K800_IGA2_FIFO_THRESHOLD;
1202 iga2_fifo_high_threshold =
1203 K800_IGA2_FIFO_HIGH_THRESHOLD;
1204
1205 /* If resolution > 1280x1024, expire length = 64,
1206 else expire length = 128 */
1207 if ((hor_active > 1280) && (ver_active > 1024))
1208 iga2_display_queue_expire_num = 16;
1209 else
1210 iga2_display_queue_expire_num =
1211 K800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1212 }
1213
1214 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1215 iga2_fifo_max_depth = P880_IGA2_FIFO_MAX_DEPTH;
1216 iga2_fifo_threshold = P880_IGA2_FIFO_THRESHOLD;
1217 iga2_fifo_high_threshold =
1218 P880_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 P880_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1227 }
1228
1229 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1230 iga2_fifo_max_depth = CN700_IGA2_FIFO_MAX_DEPTH;
1231 iga2_fifo_threshold = CN700_IGA2_FIFO_THRESHOLD;
1232 iga2_fifo_high_threshold =
1233 CN700_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 CN700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1242 }
1243
1244 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1245 iga2_fifo_max_depth = CX700_IGA2_FIFO_MAX_DEPTH;
1246 iga2_fifo_threshold = CX700_IGA2_FIFO_THRESHOLD;
1247 iga2_fifo_high_threshold =
1248 CX700_IGA2_FIFO_HIGH_THRESHOLD;
1249 iga2_display_queue_expire_num =
1250 CX700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1251 }
1252
1253 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1254 iga2_fifo_max_depth = K8M890_IGA2_FIFO_MAX_DEPTH;
1255 iga2_fifo_threshold = K8M890_IGA2_FIFO_THRESHOLD;
1256 iga2_fifo_high_threshold =
1257 K8M890_IGA2_FIFO_HIGH_THRESHOLD;
1258 iga2_display_queue_expire_num =
1259 K8M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1260 }
1261
1262 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1263 iga2_fifo_max_depth = P4M890_IGA2_FIFO_MAX_DEPTH;
1264 iga2_fifo_threshold = P4M890_IGA2_FIFO_THRESHOLD;
1265 iga2_fifo_high_threshold =
1266 P4M890_IGA2_FIFO_HIGH_THRESHOLD;
1267 iga2_display_queue_expire_num =
1268 P4M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1269 }
1270
1271 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1272 iga2_fifo_max_depth = P4M900_IGA2_FIFO_MAX_DEPTH;
1273 iga2_fifo_threshold = P4M900_IGA2_FIFO_THRESHOLD;
1274 iga2_fifo_high_threshold =
1275 P4M900_IGA2_FIFO_HIGH_THRESHOLD;
1276 iga2_display_queue_expire_num =
1277 P4M900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1278 }
1279
1280 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1281 iga2_fifo_max_depth = VX800_IGA2_FIFO_MAX_DEPTH;
1282 iga2_fifo_threshold = VX800_IGA2_FIFO_THRESHOLD;
1283 iga2_fifo_high_threshold =
1284 VX800_IGA2_FIFO_HIGH_THRESHOLD;
1285 iga2_display_queue_expire_num =
1286 VX800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1287 }
1288
1289 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1290 iga2_fifo_max_depth = VX855_IGA2_FIFO_MAX_DEPTH;
1291 iga2_fifo_threshold = VX855_IGA2_FIFO_THRESHOLD;
1292 iga2_fifo_high_threshold =
1293 VX855_IGA2_FIFO_HIGH_THRESHOLD;
1294 iga2_display_queue_expire_num =
1295 VX855_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1296 }
1297
1298 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1299 iga2_fifo_max_depth = VX900_IGA2_FIFO_MAX_DEPTH;
1300 iga2_fifo_threshold = VX900_IGA2_FIFO_THRESHOLD;
1301 iga2_fifo_high_threshold =
1302 VX900_IGA2_FIFO_HIGH_THRESHOLD;
1303 iga2_display_queue_expire_num =
1304 VX900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1305 }
1306
1307 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1308 /* Set Display FIFO Depath Select */
1309 reg_value =
1310 IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth)
1311 - 1;
1312 /* Patch LCD in IGA2 case */
1313 viafb_load_reg_num =
1314 display_fifo_depth_reg.
1315 iga2_fifo_depth_select_reg.reg_num;
1316 reg =
1317 display_fifo_depth_reg.
1318 iga2_fifo_depth_select_reg.reg;
1319 viafb_load_reg(reg_value,
1320 viafb_load_reg_num, reg, VIACR);
1321 } else {
1322
1323 /* Set Display FIFO Depath Select */
1324 reg_value =
1325 IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth);
1326 viafb_load_reg_num =
1327 display_fifo_depth_reg.
1328 iga2_fifo_depth_select_reg.reg_num;
1329 reg =
1330 display_fifo_depth_reg.
1331 iga2_fifo_depth_select_reg.reg;
1332 viafb_load_reg(reg_value,
1333 viafb_load_reg_num, reg, VIACR);
1334 }
1335
1336 /* Set Display FIFO Threshold Select */
1337 reg_value = IGA2_FIFO_THRESHOLD_FORMULA(iga2_fifo_threshold);
1338 viafb_load_reg_num =
1339 fifo_threshold_select_reg.
1340 iga2_fifo_threshold_select_reg.reg_num;
1341 reg =
1342 fifo_threshold_select_reg.
1343 iga2_fifo_threshold_select_reg.reg;
1344 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1345
1346 /* Set FIFO High Threshold Select */
1347 reg_value =
1348 IGA2_FIFO_HIGH_THRESHOLD_FORMULA(iga2_fifo_high_threshold);
1349 viafb_load_reg_num =
1350 fifo_high_threshold_select_reg.
1351 iga2_fifo_high_threshold_select_reg.reg_num;
1352 reg =
1353 fifo_high_threshold_select_reg.
1354 iga2_fifo_high_threshold_select_reg.reg;
1355 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1356
1357 /* Set Display Queue Expire Num */
1358 reg_value =
1359 IGA2_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1360 (iga2_display_queue_expire_num);
1361 viafb_load_reg_num =
1362 display_queue_expire_num_reg.
1363 iga2_display_queue_expire_num_reg.reg_num;
1364 reg =
1365 display_queue_expire_num_reg.
1366 iga2_display_queue_expire_num_reg.reg;
1367 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1368
1369 }
1370
1371 }
1372
1373 static struct via_pll_config get_pll_config(struct pll_limit *limits, int size,
1374 int clk)
1375 {
1376 struct via_pll_config cur, up, down, best = {0, 1, 0};
1377 const u32 f0 = 14318180; /* X1 frequency */
1378 int i, f;
1379
1380 for (i = 0; i < size; i++) {
1381 cur.rshift = limits[i].rshift;
1382 cur.divisor = limits[i].divisor;
1383 cur.multiplier = clk / ((f0 / cur.divisor)>>cur.rshift);
1384 f = abs(get_pll_output_frequency(f0, cur) - clk);
1385 up = down = cur;
1386 up.multiplier++;
1387 down.multiplier--;
1388 if (abs(get_pll_output_frequency(f0, up) - clk) < f)
1389 cur = up;
1390 else if (abs(get_pll_output_frequency(f0, down) - clk) < f)
1391 cur = down;
1392
1393 if (cur.multiplier < limits[i].multiplier_min)
1394 cur.multiplier = limits[i].multiplier_min;
1395 else if (cur.multiplier > limits[i].multiplier_max)
1396 cur.multiplier = limits[i].multiplier_max;
1397
1398 f = abs(get_pll_output_frequency(f0, cur) - clk);
1399 if (f < abs(get_pll_output_frequency(f0, best) - clk))
1400 best = cur;
1401 }
1402
1403 return best;
1404 }
1405
1406 static struct via_pll_config get_best_pll_config(int clk)
1407 {
1408 struct via_pll_config config;
1409
1410 switch (viaparinfo->chip_info->gfx_chip_name) {
1411 case UNICHROME_CLE266:
1412 case UNICHROME_K400:
1413 config = get_pll_config(cle266_pll_limits,
1414 ARRAY_SIZE(cle266_pll_limits), clk);
1415 break;
1416 case UNICHROME_K800:
1417 case UNICHROME_PM800:
1418 case UNICHROME_CN700:
1419 config = get_pll_config(k800_pll_limits,
1420 ARRAY_SIZE(k800_pll_limits), clk);
1421 break;
1422 case UNICHROME_CX700:
1423 case UNICHROME_CN750:
1424 case UNICHROME_K8M890:
1425 case UNICHROME_P4M890:
1426 case UNICHROME_P4M900:
1427 case UNICHROME_VX800:
1428 config = get_pll_config(cx700_pll_limits,
1429 ARRAY_SIZE(cx700_pll_limits), clk);
1430 break;
1431 case UNICHROME_VX855:
1432 case UNICHROME_VX900:
1433 config = get_pll_config(vx855_pll_limits,
1434 ARRAY_SIZE(vx855_pll_limits), clk);
1435 break;
1436 }
1437
1438 return config;
1439 }
1440
1441 /* Set VCLK*/
1442 void viafb_set_vclock(u32 clk, int set_iga)
1443 {
1444 struct via_pll_config config = get_best_pll_config(clk);
1445
1446 if (set_iga == IGA1)
1447 clock.set_primary_pll(config);
1448 if (set_iga == IGA2)
1449 clock.set_secondary_pll(config);
1450
1451 /* Fire! */
1452 via_write_misc_reg_mask(0x0C, 0x0C); /* select external clock */
1453 }
1454
1455 struct via_display_timing var_to_timing(const struct fb_var_screeninfo *var,
1456 u16 cxres, u16 cyres)
1457 {
1458 struct via_display_timing timing;
1459 u16 dx = (var->xres - cxres) / 2, dy = (var->yres - cyres) / 2;
1460
1461 timing.hor_addr = cxres;
1462 timing.hor_sync_start = timing.hor_addr + var->right_margin + dx;
1463 timing.hor_sync_end = timing.hor_sync_start + var->hsync_len;
1464 timing.hor_total = timing.hor_sync_end + var->left_margin + dx;
1465 timing.hor_blank_start = timing.hor_addr + dx;
1466 timing.hor_blank_end = timing.hor_total - dx;
1467 timing.ver_addr = cyres;
1468 timing.ver_sync_start = timing.ver_addr + var->lower_margin + dy;
1469 timing.ver_sync_end = timing.ver_sync_start + var->vsync_len;
1470 timing.ver_total = timing.ver_sync_end + var->upper_margin + dy;
1471 timing.ver_blank_start = timing.ver_addr + dy;
1472 timing.ver_blank_end = timing.ver_total - dy;
1473 return timing;
1474 }
1475
1476 void viafb_fill_crtc_timing(const struct fb_var_screeninfo *var,
1477 u16 cxres, u16 cyres, int iga)
1478 {
1479 struct via_display_timing crt_reg = var_to_timing(var,
1480 cxres ? cxres : var->xres, cyres ? cyres : var->yres);
1481
1482 if (iga == IGA1)
1483 via_set_primary_timing(&crt_reg);
1484 else if (iga == IGA2)
1485 via_set_secondary_timing(&crt_reg);
1486
1487 viafb_load_fetch_count_reg(var->xres, var->bits_per_pixel / 8, iga);
1488 if (viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266
1489 && viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400)
1490 viafb_load_FIFO_reg(iga, var->xres, var->yres);
1491
1492 viafb_set_vclock(PICOS2KHZ(var->pixclock) * 1000, iga);
1493 }
1494
1495 void viafb_init_chip_info(int chip_type)
1496 {
1497 via_clock_init(&clock, chip_type);
1498 init_gfx_chip_info(chip_type);
1499 init_tmds_chip_info();
1500 init_lvds_chip_info();
1501
1502 /*Set IGA path for each device */
1503 viafb_set_iga_path();
1504
1505 viaparinfo->lvds_setting_info->display_method = viafb_lcd_dsp_method;
1506 viaparinfo->lvds_setting_info->lcd_mode = viafb_lcd_mode;
1507 viaparinfo->lvds_setting_info2->display_method =
1508 viaparinfo->lvds_setting_info->display_method;
1509 viaparinfo->lvds_setting_info2->lcd_mode =
1510 viaparinfo->lvds_setting_info->lcd_mode;
1511 }
1512
1513 void viafb_update_device_setting(int hres, int vres, int bpp, int flag)
1514 {
1515 if (flag == 0) {
1516 viaparinfo->tmds_setting_info->h_active = hres;
1517 viaparinfo->tmds_setting_info->v_active = vres;
1518 } else {
1519
1520 if (viaparinfo->tmds_setting_info->iga_path == IGA2) {
1521 viaparinfo->tmds_setting_info->h_active = hres;
1522 viaparinfo->tmds_setting_info->v_active = vres;
1523 }
1524
1525 }
1526 }
1527
1528 static void init_gfx_chip_info(int chip_type)
1529 {
1530 u8 tmp;
1531
1532 viaparinfo->chip_info->gfx_chip_name = chip_type;
1533
1534 /* Check revision of CLE266 Chip */
1535 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
1536 /* CR4F only define in CLE266.CX chip */
1537 tmp = viafb_read_reg(VIACR, CR4F);
1538 viafb_write_reg(CR4F, VIACR, 0x55);
1539 if (viafb_read_reg(VIACR, CR4F) != 0x55)
1540 viaparinfo->chip_info->gfx_chip_revision =
1541 CLE266_REVISION_AX;
1542 else
1543 viaparinfo->chip_info->gfx_chip_revision =
1544 CLE266_REVISION_CX;
1545 /* restore orignal CR4F value */
1546 viafb_write_reg(CR4F, VIACR, tmp);
1547 }
1548
1549 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1550 tmp = viafb_read_reg(VIASR, SR43);
1551 DEBUG_MSG(KERN_INFO "SR43:%X\n", tmp);
1552 if (tmp & 0x02) {
1553 viaparinfo->chip_info->gfx_chip_revision =
1554 CX700_REVISION_700M2;
1555 } else if (tmp & 0x40) {
1556 viaparinfo->chip_info->gfx_chip_revision =
1557 CX700_REVISION_700M;
1558 } else {
1559 viaparinfo->chip_info->gfx_chip_revision =
1560 CX700_REVISION_700;
1561 }
1562 }
1563
1564 /* Determine which 2D engine we have */
1565 switch (viaparinfo->chip_info->gfx_chip_name) {
1566 case UNICHROME_VX800:
1567 case UNICHROME_VX855:
1568 case UNICHROME_VX900:
1569 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_M1;
1570 break;
1571 case UNICHROME_K8M890:
1572 case UNICHROME_P4M900:
1573 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H5;
1574 break;
1575 default:
1576 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H2;
1577 break;
1578 }
1579 }
1580
1581 static void init_tmds_chip_info(void)
1582 {
1583 viafb_tmds_trasmitter_identify();
1584
1585 if (INTERFACE_NONE == viaparinfo->chip_info->tmds_chip_info.
1586 output_interface) {
1587 switch (viaparinfo->chip_info->gfx_chip_name) {
1588 case UNICHROME_CX700:
1589 {
1590 /* we should check support by hardware layout.*/
1591 if ((viafb_display_hardware_layout ==
1592 HW_LAYOUT_DVI_ONLY)
1593 || (viafb_display_hardware_layout ==
1594 HW_LAYOUT_LCD_DVI)) {
1595 viaparinfo->chip_info->tmds_chip_info.
1596 output_interface = INTERFACE_TMDS;
1597 } else {
1598 viaparinfo->chip_info->tmds_chip_info.
1599 output_interface =
1600 INTERFACE_NONE;
1601 }
1602 break;
1603 }
1604 case UNICHROME_K8M890:
1605 case UNICHROME_P4M900:
1606 case UNICHROME_P4M890:
1607 /* TMDS on PCIE, we set DFPLOW as default. */
1608 viaparinfo->chip_info->tmds_chip_info.output_interface =
1609 INTERFACE_DFP_LOW;
1610 break;
1611 default:
1612 {
1613 /* set DVP1 default for DVI */
1614 viaparinfo->chip_info->tmds_chip_info
1615 .output_interface = INTERFACE_DVP1;
1616 }
1617 }
1618 }
1619
1620 DEBUG_MSG(KERN_INFO "TMDS Chip = %d\n",
1621 viaparinfo->chip_info->tmds_chip_info.tmds_chip_name);
1622 viafb_init_dvi_size(&viaparinfo->shared->chip_info.tmds_chip_info,
1623 &viaparinfo->shared->tmds_setting_info);
1624 }
1625
1626 static void init_lvds_chip_info(void)
1627 {
1628 viafb_lvds_trasmitter_identify();
1629 viafb_init_lcd_size();
1630 viafb_init_lvds_output_interface(&viaparinfo->chip_info->lvds_chip_info,
1631 viaparinfo->lvds_setting_info);
1632 if (viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name) {
1633 viafb_init_lvds_output_interface(&viaparinfo->chip_info->
1634 lvds_chip_info2, viaparinfo->lvds_setting_info2);
1635 }
1636 /*If CX700,two singel LCD, we need to reassign
1637 LCD interface to different LVDS port */
1638 if ((UNICHROME_CX700 == viaparinfo->chip_info->gfx_chip_name)
1639 && (HW_LAYOUT_LCD1_LCD2 == viafb_display_hardware_layout)) {
1640 if ((INTEGRATED_LVDS == viaparinfo->chip_info->lvds_chip_info.
1641 lvds_chip_name) && (INTEGRATED_LVDS ==
1642 viaparinfo->chip_info->
1643 lvds_chip_info2.lvds_chip_name)) {
1644 viaparinfo->chip_info->lvds_chip_info.output_interface =
1645 INTERFACE_LVDS0;
1646 viaparinfo->chip_info->lvds_chip_info2.
1647 output_interface =
1648 INTERFACE_LVDS1;
1649 }
1650 }
1651
1652 DEBUG_MSG(KERN_INFO "LVDS Chip = %d\n",
1653 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
1654 DEBUG_MSG(KERN_INFO "LVDS1 output_interface = %d\n",
1655 viaparinfo->chip_info->lvds_chip_info.output_interface);
1656 DEBUG_MSG(KERN_INFO "LVDS2 output_interface = %d\n",
1657 viaparinfo->chip_info->lvds_chip_info.output_interface);
1658 }
1659
1660 void viafb_init_dac(int set_iga)
1661 {
1662 int i;
1663 u8 tmp;
1664
1665 if (set_iga == IGA1) {
1666 /* access Primary Display's LUT */
1667 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
1668 /* turn off LCK */
1669 viafb_write_reg_mask(SR1B, VIASR, 0x00, BIT7 + BIT6);
1670 for (i = 0; i < 256; i++) {
1671 write_dac_reg(i, palLUT_table[i].red,
1672 palLUT_table[i].green,
1673 palLUT_table[i].blue);
1674 }
1675 /* turn on LCK */
1676 viafb_write_reg_mask(SR1B, VIASR, 0xC0, BIT7 + BIT6);
1677 } else {
1678 tmp = viafb_read_reg(VIACR, CR6A);
1679 /* access Secondary Display's LUT */
1680 viafb_write_reg_mask(CR6A, VIACR, 0x40, BIT6);
1681 viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
1682 for (i = 0; i < 256; i++) {
1683 write_dac_reg(i, palLUT_table[i].red,
1684 palLUT_table[i].green,
1685 palLUT_table[i].blue);
1686 }
1687 /* set IGA1 DAC for default */
1688 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
1689 viafb_write_reg(CR6A, VIACR, tmp);
1690 }
1691 }
1692
1693 static void device_screen_off(void)
1694 {
1695 /* turn off CRT screen (IGA1) */
1696 viafb_write_reg_mask(SR01, VIASR, 0x20, BIT5);
1697 }
1698
1699 static void device_screen_on(void)
1700 {
1701 /* turn on CRT screen (IGA1) */
1702 viafb_write_reg_mask(SR01, VIASR, 0x00, BIT5);
1703 }
1704
1705 static void set_display_channel(void)
1706 {
1707 /*If viafb_LCD2_ON, on cx700, internal lvds's information
1708 is keeped on lvds_setting_info2 */
1709 if (viafb_LCD2_ON &&
1710 viaparinfo->lvds_setting_info2->device_lcd_dualedge) {
1711 /* For dual channel LCD: */
1712 /* Set to Dual LVDS channel. */
1713 viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
1714 } else if (viafb_LCD_ON && viafb_DVI_ON) {
1715 /* For LCD+DFP: */
1716 /* Set to LVDS1 + TMDS channel. */
1717 viafb_write_reg_mask(CRD2, VIACR, 0x10, BIT4 + BIT5);
1718 } else if (viafb_DVI_ON) {
1719 /* Set to single TMDS channel. */
1720 viafb_write_reg_mask(CRD2, VIACR, 0x30, BIT4 + BIT5);
1721 } else if (viafb_LCD_ON) {
1722 if (viaparinfo->lvds_setting_info->device_lcd_dualedge) {
1723 /* For dual channel LCD: */
1724 /* Set to Dual LVDS channel. */
1725 viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
1726 } else {
1727 /* Set to LVDS0 + LVDS1 channel. */
1728 viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT4 + BIT5);
1729 }
1730 }
1731 }
1732
1733 static u8 get_sync(struct fb_var_screeninfo *var)
1734 {
1735 u8 polarity = 0;
1736
1737 if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
1738 polarity |= VIA_HSYNC_NEGATIVE;
1739 if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
1740 polarity |= VIA_VSYNC_NEGATIVE;
1741 return polarity;
1742 }
1743
1744 static void hw_init(void)
1745 {
1746 int i;
1747
1748 inb(VIAStatus);
1749 outb(0x00, VIAAR);
1750
1751 /* Write Common Setting for Video Mode */
1752 viafb_write_regx(common_vga, ARRAY_SIZE(common_vga));
1753 switch (viaparinfo->chip_info->gfx_chip_name) {
1754 case UNICHROME_CLE266:
1755 viafb_write_regx(CLE266_ModeXregs, NUM_TOTAL_CLE266_ModeXregs);
1756 break;
1757
1758 case UNICHROME_K400:
1759 viafb_write_regx(KM400_ModeXregs, NUM_TOTAL_KM400_ModeXregs);
1760 break;
1761
1762 case UNICHROME_K800:
1763 case UNICHROME_PM800:
1764 viafb_write_regx(CN400_ModeXregs, NUM_TOTAL_CN400_ModeXregs);
1765 break;
1766
1767 case UNICHROME_CN700:
1768 case UNICHROME_K8M890:
1769 case UNICHROME_P4M890:
1770 case UNICHROME_P4M900:
1771 viafb_write_regx(CN700_ModeXregs, NUM_TOTAL_CN700_ModeXregs);
1772 break;
1773
1774 case UNICHROME_CX700:
1775 case UNICHROME_VX800:
1776 viafb_write_regx(CX700_ModeXregs, NUM_TOTAL_CX700_ModeXregs);
1777 break;
1778
1779 case UNICHROME_VX855:
1780 case UNICHROME_VX900:
1781 viafb_write_regx(VX855_ModeXregs, NUM_TOTAL_VX855_ModeXregs);
1782 break;
1783 }
1784
1785 /* magic required on VX900 for correct modesetting on IGA1 */
1786 via_write_reg_mask(VIACR, 0x45, 0x00, 0x01);
1787
1788 /* probably this should go to the scaling code one day */
1789 via_write_reg_mask(VIACR, 0xFD, 0, 0x80); /* VX900 hw scale on IGA2 */
1790 viafb_write_regx(scaling_parameters, ARRAY_SIZE(scaling_parameters));
1791
1792 /* Fill VPIT Parameters */
1793 /* Write Misc Register */
1794 outb(VPIT.Misc, VIA_MISC_REG_WRITE);
1795
1796 /* Write Sequencer */
1797 for (i = 1; i <= StdSR; i++)
1798 via_write_reg(VIASR, i, VPIT.SR[i - 1]);
1799
1800 viafb_write_reg_mask(0x15, VIASR, 0xA2, 0xA2);
1801
1802 /* Write Graphic Controller */
1803 for (i = 0; i < StdGR; i++)
1804 via_write_reg(VIAGR, i, VPIT.GR[i]);
1805
1806 /* Write Attribute Controller */
1807 for (i = 0; i < StdAR; i++) {
1808 inb(VIAStatus);
1809 outb(i, VIAAR);
1810 outb(VPIT.AR[i], VIAAR);
1811 }
1812
1813 inb(VIAStatus);
1814 outb(0x20, VIAAR);
1815
1816 load_fix_bit_crtc_reg();
1817 }
1818
1819 int viafb_setmode(void)
1820 {
1821 int j, cxres = 0, cyres = 0;
1822 int port;
1823 u32 devices = viaparinfo->shared->iga1_devices
1824 | viaparinfo->shared->iga2_devices;
1825 u8 value, index, mask;
1826 struct fb_var_screeninfo var2;
1827
1828 device_screen_off();
1829 device_off();
1830 via_set_state(devices, VIA_STATE_OFF);
1831
1832 hw_init();
1833
1834 /* Update Patch Register */
1835
1836 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266
1837 || viaparinfo->chip_info->gfx_chip_name == UNICHROME_K400)
1838 && viafbinfo->var.xres == 1024 && viafbinfo->var.yres == 768) {
1839 for (j = 0; j < res_patch_table[0].table_length; j++) {
1840 index = res_patch_table[0].io_reg_table[j].index;
1841 port = res_patch_table[0].io_reg_table[j].port;
1842 value = res_patch_table[0].io_reg_table[j].value;
1843 mask = res_patch_table[0].io_reg_table[j].mask;
1844 viafb_write_reg_mask(index, port, value, mask);
1845 }
1846 }
1847
1848 via_set_primary_pitch(viafbinfo->fix.line_length);
1849 via_set_secondary_pitch(viafb_dual_fb ? viafbinfo1->fix.line_length
1850 : viafbinfo->fix.line_length);
1851 via_set_primary_color_depth(viaparinfo->depth);
1852 via_set_secondary_color_depth(viafb_dual_fb ? viaparinfo1->depth
1853 : viaparinfo->depth);
1854 via_set_source(viaparinfo->shared->iga1_devices, IGA1);
1855 via_set_source(viaparinfo->shared->iga2_devices, IGA2);
1856 if (viaparinfo->shared->iga2_devices)
1857 enable_second_display_channel();
1858 else
1859 disable_second_display_channel();
1860
1861 /* Update Refresh Rate Setting */
1862
1863 /* Clear On Screen */
1864
1865 if (viafb_dual_fb) {
1866 var2 = viafbinfo1->var;
1867 } else if (viafb_SAMM_ON) {
1868 viafb_fill_var_timing_info(&var2, viafb_get_best_mode(
1869 viafb_second_xres, viafb_second_yres, viafb_refresh1));
1870 cxres = viafbinfo->var.xres;
1871 cyres = viafbinfo->var.yres;
1872 var2.bits_per_pixel = viafbinfo->var.bits_per_pixel;
1873 }
1874
1875 /* CRT set mode */
1876 if (viafb_CRT_ON) {
1877 if (viaparinfo->shared->iga2_devices & VIA_CRT
1878 && viafb_SAMM_ON)
1879 viafb_fill_crtc_timing(&var2, cxres, cyres, IGA2);
1880 else
1881 viafb_fill_crtc_timing(&viafbinfo->var, 0, 0,
1882 (viaparinfo->shared->iga1_devices & VIA_CRT)
1883 ? IGA1 : IGA2);
1884
1885 /* Patch if set_hres is not 8 alignment (1366) to viafb_setmode
1886 to 8 alignment (1368),there is several pixels (2 pixels)
1887 on right side of screen. */
1888 if (viafbinfo->var.xres % 8) {
1889 viafb_unlock_crt();
1890 viafb_write_reg(CR02, VIACR,
1891 viafb_read_reg(VIACR, CR02) - 1);
1892 viafb_lock_crt();
1893 }
1894 }
1895
1896 if (viafb_DVI_ON) {
1897 if (viaparinfo->shared->tmds_setting_info.iga_path == IGA2
1898 && viafb_SAMM_ON)
1899 viafb_dvi_set_mode(&var2, cxres, cyres, IGA2);
1900 else
1901 viafb_dvi_set_mode(&viafbinfo->var, 0, 0,
1902 viaparinfo->tmds_setting_info->iga_path);
1903 }
1904
1905 if (viafb_LCD_ON) {
1906 if (viafb_SAMM_ON &&
1907 (viaparinfo->lvds_setting_info->iga_path == IGA2)) {
1908 viafb_lcd_set_mode(&var2, cxres, cyres,
1909 viaparinfo->lvds_setting_info,
1910 &viaparinfo->chip_info->lvds_chip_info);
1911 } else {
1912 /* IGA1 doesn't have LCD scaling, so set it center. */
1913 if (viaparinfo->lvds_setting_info->iga_path == IGA1) {
1914 viaparinfo->lvds_setting_info->display_method =
1915 LCD_CENTERING;
1916 }
1917 viafb_lcd_set_mode(&viafbinfo->var, 0, 0,
1918 viaparinfo->lvds_setting_info,
1919 &viaparinfo->chip_info->lvds_chip_info);
1920 }
1921 }
1922 if (viafb_LCD2_ON) {
1923 if (viafb_SAMM_ON &&
1924 (viaparinfo->lvds_setting_info2->iga_path == IGA2)) {
1925 viafb_lcd_set_mode(&var2, cxres, cyres,
1926 viaparinfo->lvds_setting_info2,
1927 &viaparinfo->chip_info->lvds_chip_info2);
1928 } else {
1929 /* IGA1 doesn't have LCD scaling, so set it center. */
1930 if (viaparinfo->lvds_setting_info2->iga_path == IGA1) {
1931 viaparinfo->lvds_setting_info2->display_method =
1932 LCD_CENTERING;
1933 }
1934 viafb_lcd_set_mode(&viafbinfo->var, 0, 0,
1935 viaparinfo->lvds_setting_info2,
1936 &viaparinfo->chip_info->lvds_chip_info2);
1937 }
1938 }
1939
1940 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
1941 && (viafb_LCD_ON || viafb_DVI_ON))
1942 set_display_channel();
1943
1944 /* If set mode normally, save resolution information for hot-plug . */
1945 if (!viafb_hotplug) {
1946 viafb_hotplug_Xres = viafbinfo->var.xres;
1947 viafb_hotplug_Yres = viafbinfo->var.yres;
1948 viafb_hotplug_bpp = viafbinfo->var.bits_per_pixel;
1949 viafb_hotplug_refresh = viafb_refresh;
1950
1951 if (viafb_DVI_ON)
1952 viafb_DeviceStatus = DVI_Device;
1953 else
1954 viafb_DeviceStatus = CRT_Device;
1955 }
1956 device_on();
1957 if (!viafb_SAMM_ON)
1958 via_set_sync_polarity(devices, get_sync(&viafbinfo->var));
1959 else {
1960 via_set_sync_polarity(viaparinfo->shared->iga1_devices,
1961 get_sync(&viafbinfo->var));
1962 via_set_sync_polarity(viaparinfo->shared->iga2_devices,
1963 get_sync(&var2));
1964 }
1965
1966 clock.set_engine_pll_state(VIA_STATE_ON);
1967 clock.set_primary_clock_source(VIA_CLKSRC_X1, true);
1968 clock.set_secondary_clock_source(VIA_CLKSRC_X1, true);
1969
1970 #ifdef CONFIG_FB_VIA_X_COMPATIBILITY
1971 clock.set_primary_pll_state(VIA_STATE_ON);
1972 clock.set_primary_clock_state(VIA_STATE_ON);
1973 clock.set_secondary_pll_state(VIA_STATE_ON);
1974 clock.set_secondary_clock_state(VIA_STATE_ON);
1975 #else
1976 if (viaparinfo->shared->iga1_devices) {
1977 clock.set_primary_pll_state(VIA_STATE_ON);
1978 clock.set_primary_clock_state(VIA_STATE_ON);
1979 } else {
1980 clock.set_primary_pll_state(VIA_STATE_OFF);
1981 clock.set_primary_clock_state(VIA_STATE_OFF);
1982 }
1983
1984 if (viaparinfo->shared->iga2_devices) {
1985 clock.set_secondary_pll_state(VIA_STATE_ON);
1986 clock.set_secondary_clock_state(VIA_STATE_ON);
1987 } else {
1988 clock.set_secondary_pll_state(VIA_STATE_OFF);
1989 clock.set_secondary_clock_state(VIA_STATE_OFF);
1990 }
1991 #endif /*CONFIG_FB_VIA_X_COMPATIBILITY*/
1992
1993 via_set_state(devices, VIA_STATE_ON);
1994 device_screen_on();
1995 return 1;
1996 }
1997
1998 int viafb_get_refresh(int hres, int vres, u32 long_refresh)
1999 {
2000 const struct fb_videomode *best;
2001
2002 best = viafb_get_best_mode(hres, vres, long_refresh);
2003 if (!best)
2004 return 60;
2005
2006 if (abs(best->refresh - long_refresh) > 3) {
2007 if (hres == 1200 && vres == 900)
2008 return 49; /* OLPC DCON only supports 50 Hz */
2009 else
2010 return 60;
2011 }
2012
2013 return best->refresh;
2014 }
2015
2016 static void device_off(void)
2017 {
2018 viafb_dvi_disable();
2019 viafb_lcd_disable();
2020 }
2021
2022 static void device_on(void)
2023 {
2024 if (viafb_DVI_ON == 1)
2025 viafb_dvi_enable();
2026 if (viafb_LCD_ON == 1)
2027 viafb_lcd_enable();
2028 }
2029
2030 static void enable_second_display_channel(void)
2031 {
2032 /* to enable second display channel. */
2033 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2034 viafb_write_reg_mask(CR6A, VIACR, BIT7, BIT7);
2035 viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2036 }
2037
2038 static void disable_second_display_channel(void)
2039 {
2040 /* to disable second display channel. */
2041 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2042 viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT7);
2043 viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2044 }
2045
2046 void viafb_set_dpa_gfx(int output_interface, struct GFX_DPA_SETTING\
2047 *p_gfx_dpa_setting)
2048 {
2049 switch (output_interface) {
2050 case INTERFACE_DVP0:
2051 {
2052 /* DVP0 Clock Polarity and Adjust: */
2053 viafb_write_reg_mask(CR96, VIACR,
2054 p_gfx_dpa_setting->DVP0, 0x0F);
2055
2056 /* DVP0 Clock and Data Pads Driving: */
2057 viafb_write_reg_mask(SR1E, VIASR,
2058 p_gfx_dpa_setting->DVP0ClockDri_S, BIT2);
2059 viafb_write_reg_mask(SR2A, VIASR,
2060 p_gfx_dpa_setting->DVP0ClockDri_S1,
2061 BIT4);
2062 viafb_write_reg_mask(SR1B, VIASR,
2063 p_gfx_dpa_setting->DVP0DataDri_S, BIT1);
2064 viafb_write_reg_mask(SR2A, VIASR,
2065 p_gfx_dpa_setting->DVP0DataDri_S1, BIT5);
2066 break;
2067 }
2068
2069 case INTERFACE_DVP1:
2070 {
2071 /* DVP1 Clock Polarity and Adjust: */
2072 viafb_write_reg_mask(CR9B, VIACR,
2073 p_gfx_dpa_setting->DVP1, 0x0F);
2074
2075 /* DVP1 Clock and Data Pads Driving: */
2076 viafb_write_reg_mask(SR65, VIASR,
2077 p_gfx_dpa_setting->DVP1Driving, 0x0F);
2078 break;
2079 }
2080
2081 case INTERFACE_DFP_HIGH:
2082 {
2083 viafb_write_reg_mask(CR97, VIACR,
2084 p_gfx_dpa_setting->DFPHigh, 0x0F);
2085 break;
2086 }
2087
2088 case INTERFACE_DFP_LOW:
2089 {
2090 viafb_write_reg_mask(CR99, VIACR,
2091 p_gfx_dpa_setting->DFPLow, 0x0F);
2092 break;
2093 }
2094
2095 case INTERFACE_DFP:
2096 {
2097 viafb_write_reg_mask(CR97, VIACR,
2098 p_gfx_dpa_setting->DFPHigh, 0x0F);
2099 viafb_write_reg_mask(CR99, VIACR,
2100 p_gfx_dpa_setting->DFPLow, 0x0F);
2101 break;
2102 }
2103 }
2104 }
2105
2106 void viafb_fill_var_timing_info(struct fb_var_screeninfo *var,
2107 const struct fb_videomode *mode)
2108 {
2109 var->pixclock = mode->pixclock;
2110 var->xres = mode->xres;
2111 var->yres = mode->yres;
2112 var->left_margin = mode->left_margin;
2113 var->right_margin = mode->right_margin;
2114 var->hsync_len = mode->hsync_len;
2115 var->upper_margin = mode->upper_margin;
2116 var->lower_margin = mode->lower_margin;
2117 var->vsync_len = mode->vsync_len;
2118 var->sync = mode->sync;
2119 }
Linux with added FPC-III support