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[PATCH] g_file_storage: fix obscure race condition
[linux/fpc-iii.git] / drivers / video / matrox / matroxfb_maven.c
blobad60bbb16cdf0dedd14d69333c025dd19718f2a3
1 /*
2 *
3 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
4 *
5 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
6 *
7 * Portions Copyright (c) 2001 Matrox Graphics Inc.
8 *
9 * Version: 1.65 2002/08/14
10 *
11 * See matroxfb_base.c for contributors.
12 *
13 */
14
15 #include "matroxfb_maven.h"
16 #include "matroxfb_misc.h"
17 #include "matroxfb_DAC1064.h"
18 #include <linux/i2c.h>
19 #include <linux/matroxfb.h>
20 #include <asm/div64.h>
21 #include <asm/uaccess.h>
22
23 #define MAVEN_I2CID (0x1B)
24
25 #define MGATVO_B 1
26 #define MGATVO_C 2
27
28 static const struct maven_gamma {
29 unsigned char reg83;
30 unsigned char reg84;
31 unsigned char reg85;
32 unsigned char reg86;
33 unsigned char reg87;
34 unsigned char reg88;
35 unsigned char reg89;
36 unsigned char reg8a;
37 unsigned char reg8b;
38 } maven_gamma[] = {
39 { 131, 57, 223, 15, 117, 212, 251, 91, 156},
40 { 133, 61, 128, 63, 180, 147, 195, 100, 180},
41 { 131, 19, 63, 31, 50, 66, 171, 64, 176},
42 { 0, 0, 0, 31, 16, 16, 16, 100, 200},
43 { 8, 23, 47, 73, 147, 244, 220, 80, 195},
44 { 22, 43, 64, 80, 147, 115, 58, 85, 168},
45 { 34, 60, 80, 214, 147, 212, 188, 85, 167},
46 { 45, 77, 96, 216, 147, 99, 91, 85, 159},
47 { 56, 76, 112, 107, 147, 212, 148, 64, 144},
48 { 65, 91, 128, 137, 147, 196, 17, 69, 148},
49 { 72, 104, 136, 138, 147, 180, 245, 73, 147},
50 { 87, 116, 143, 126, 16, 83, 229, 77, 144},
51 { 95, 119, 152, 254, 244, 83, 221, 77, 151},
52 { 100, 129, 159, 156, 244, 148, 197, 77, 160},
53 { 105, 141, 167, 247, 244, 132, 181, 84, 166},
54 { 105, 147, 168, 247, 244, 245, 181, 90, 170},
55 { 120, 153, 175, 248, 212, 229, 165, 90, 180},
56 { 119, 156, 176, 248, 244, 229, 84, 74, 160},
57 { 119, 158, 183, 248, 244, 229, 149, 78, 165}
58 };
59
60 /* Definition of the various controls */
61 struct mctl {
62 struct v4l2_queryctrl desc;
63 size_t control;
64 };
65
66 #define BLMIN 0x0FF
67 #define WLMAX 0x3FF
68
69 static const struct mctl maven_controls[] =
70 { { { V4L2_CID_BRIGHTNESS, V4L2_CTRL_TYPE_INTEGER,
71 "brightness",
72 0, WLMAX - BLMIN, 1, 379 - BLMIN,
73 0,
74 }, offsetof(struct matrox_fb_info, altout.tvo_params.brightness) },
75 { { V4L2_CID_CONTRAST, V4L2_CTRL_TYPE_INTEGER,
76 "contrast",
77 0, 1023, 1, 127,
78 0,
79 }, offsetof(struct matrox_fb_info, altout.tvo_params.contrast) },
80 { { V4L2_CID_SATURATION, V4L2_CTRL_TYPE_INTEGER,
81 "saturation",
82 0, 255, 1, 155,
83 0,
84 }, offsetof(struct matrox_fb_info, altout.tvo_params.saturation) },
85 { { V4L2_CID_HUE, V4L2_CTRL_TYPE_INTEGER,
86 "hue",
87 0, 255, 1, 0,
88 0,
89 }, offsetof(struct matrox_fb_info, altout.tvo_params.hue) },
90 { { V4L2_CID_GAMMA, V4L2_CTRL_TYPE_INTEGER,
91 "gamma",
92 0, sizeof(maven_gamma)/sizeof(maven_gamma[0])-1, 1, 3,
93 0,
94 }, offsetof(struct matrox_fb_info, altout.tvo_params.gamma) },
95 { { MATROXFB_CID_TESTOUT, V4L2_CTRL_TYPE_BOOLEAN,
96 "test output",
97 0, 1, 1, 0,
98 0,
99 }, offsetof(struct matrox_fb_info, altout.tvo_params.testout) },
100 { { MATROXFB_CID_DEFLICKER, V4L2_CTRL_TYPE_INTEGER,
101 "deflicker mode",
102 0, 2, 1, 0,
103 0,
104 }, offsetof(struct matrox_fb_info, altout.tvo_params.deflicker) },
105
106 };
107
108 #define MAVCTRLS (sizeof(maven_controls)/sizeof(maven_controls[0]))
109
110 /* Return: positive number: id found
111 -EINVAL: id not found, return failure
112 -ENOENT: id not found, create fake disabled control */
113 static int get_ctrl_id(__u32 v4l2_id) {
114 int i;
115
116 for (i = 0; i < MAVCTRLS; i++) {
117 if (v4l2_id < maven_controls[i].desc.id) {
118 if (maven_controls[i].desc.id == 0x08000000) {
119 return -EINVAL;
120 }
121 return -ENOENT;
122 }
123 if (v4l2_id == maven_controls[i].desc.id) {
124 return i;
125 }
126 }
127 return -EINVAL;
128 }
129
130 struct maven_data {
131 struct matrox_fb_info* primary_head;
132 struct i2c_client* client;
133 int version;
134 };
135
136 static int* get_ctrl_ptr(struct maven_data* md, int idx) {
137 return (int*)((char*)(md->primary_head) + maven_controls[idx].control);
138 }
139
140 static int maven_get_reg(struct i2c_client* c, char reg) {
141 char dst;
142 struct i2c_msg msgs[] = {{ c->addr, I2C_M_REV_DIR_ADDR, sizeof(reg), &reg },
143 { c->addr, I2C_M_RD | I2C_M_NOSTART, sizeof(dst), &dst }};
144 s32 err;
145
146 err = i2c_transfer(c->adapter, msgs, 2);
147 if (err < 0)
148 printk(KERN_INFO "ReadReg(%d) failed\n", reg);
149 return dst & 0xFF;
150 }
151
152 static int maven_set_reg(struct i2c_client* c, int reg, int val) {
153 s32 err;
154
155 err = i2c_smbus_write_byte_data(c, reg, val);
156 if (err)
157 printk(KERN_INFO "WriteReg(%d) failed\n", reg);
158 return err;
159 }
160
161 static int maven_set_reg_pair(struct i2c_client* c, int reg, int val) {
162 s32 err;
163
164 err = i2c_smbus_write_word_data(c, reg, val);
165 if (err)
166 printk(KERN_INFO "WriteRegPair(%d) failed\n", reg);
167 return err;
168 }
169
170 static const struct matrox_pll_features maven_pll = {
171 50000,
172 27000,
173 4, 127,
174 2, 31,
175 3
176 };
177
178 struct matrox_pll_features2 {
179 unsigned int vco_freq_min;
180 unsigned int vco_freq_max;
181 unsigned int feed_div_min;
182 unsigned int feed_div_max;
183 unsigned int in_div_min;
184 unsigned int in_div_max;
185 unsigned int post_shift_max;
186 };
187
188 struct matrox_pll_ctl {
189 unsigned int ref_freq;
190 unsigned int den;
191 };
192
193 static const struct matrox_pll_features2 maven1000_pll = {
194 50000000,
195 300000000,
196 5, 128,
197 3, 32,
198 3
199 };
200
201 static const struct matrox_pll_ctl maven_PAL = {
202 540000,
203 50
204 };
205
206 static const struct matrox_pll_ctl maven_NTSC = {
207 450450, /* 27027000/60 == 27000000/59.94005994 */
208 60
209 };
210
211 static int matroxfb_PLL_mavenclock(const struct matrox_pll_features2* pll,
212 const struct matrox_pll_ctl* ctl,
213 unsigned int htotal, unsigned int vtotal,
214 unsigned int* in, unsigned int* feed, unsigned int* post,
215 unsigned int* h2) {
216 unsigned int besth2 = 0;
217 unsigned int fxtal = ctl->ref_freq;
218 unsigned int fmin = pll->vco_freq_min / ctl->den;
219 unsigned int fwant;
220 unsigned int p;
221 unsigned int scrlen;
222 unsigned int fmax;
223
224 DBG(__FUNCTION__)
225
226 scrlen = htotal * (vtotal - 1);
227 fwant = htotal * vtotal;
228 fmax = pll->vco_freq_max / ctl->den;
229
230 dprintk(KERN_DEBUG "want: %u, xtal: %u, h: %u, v: %u, fmax: %u\n",
231 fwant, fxtal, htotal, vtotal, fmax);
232 for (p = 1; p <= pll->post_shift_max; p++) {
233 if (fwant * 2 > fmax)
234 break;
235 fwant *= 2;
236 }
237 if (fwant > fmax)
238 return 0;
239 for (; p-- > 0; fwant >>= 1) {
240 unsigned int m;
241
242 if (fwant < fmin) break;
243 for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
244 unsigned int n;
245 unsigned int dvd;
246 unsigned int ln;
247
248 n = (fwant * m) / fxtal;
249 if (n < pll->feed_div_min)
250 continue;
251 if (n > pll->feed_div_max)
252 break;
253
254 ln = fxtal * n;
255 dvd = m << p;
256
257 if (ln % dvd)
258 continue;
259 ln = ln / dvd;
260
261 if (ln < scrlen + 2)
262 continue;
263 ln = ln - scrlen;
264 if (ln > htotal)
265 continue;
266 dprintk(KERN_DEBUG "Match: %u / %u / %u / %u\n", n, m, p, ln);
267 if (ln > besth2) {
268 dprintk(KERN_DEBUG "Better...\n");
269 *h2 = besth2 = ln;
270 *post = p;
271 *in = m;
272 *feed = n;
273 }
274 }
275 }
276 if (besth2 < 2)
277 return 0;
278 dprintk(KERN_ERR "clk: %02X %02X %02X %d %d\n", *in, *feed, *post, fxtal, fwant);
279 return fxtal * (*feed) / (*in) * ctl->den;
280 }
281
282 static unsigned int matroxfb_mavenclock(const struct matrox_pll_ctl* ctl,
283 unsigned int htotal, unsigned int vtotal,
284 unsigned int* in, unsigned int* feed, unsigned int* post,
285 unsigned int* htotal2) {
286 unsigned int fvco;
287 unsigned int p;
288
289 fvco = matroxfb_PLL_mavenclock(&maven1000_pll, ctl, htotal, vtotal, in, feed, &p, htotal2);
290 if (!fvco)
291 return -EINVAL;
292 p = (1 << p) - 1;
293 if (fvco <= 100000000)
294 ;
295 else if (fvco <= 140000000)
296 p |= 0x08;
297 else if (fvco <= 180000000)
298 p |= 0x10;
299 else
300 p |= 0x18;
301 *post = p;
302 return 0;
303 }
304
305 static void DAC1064_calcclock(unsigned int freq, unsigned int fmax,
306 unsigned int* in, unsigned int* feed, unsigned int* post) {
307 unsigned int fvco;
308 unsigned int p;
309
310 fvco = matroxfb_PLL_calcclock(&maven_pll, freq, fmax, in, feed, &p);
311 p = (1 << p) - 1;
312 if (fvco <= 100000)
313 ;
314 else if (fvco <= 140000)
315 p |= 0x08;
316 else if (fvco <= 180000)
317 p |= 0x10;
318 else
319 p |= 0x18;
320 *post = p;
321 return;
322 }
323
324 static unsigned char maven_compute_deflicker (const struct maven_data* md) {
325 unsigned char df;
326
327 df = (md->version == MGATVO_B?0x40:0x00);
328 switch (md->primary_head->altout.tvo_params.deflicker) {
329 case 0:
330 /* df |= 0x00; */
331 break;
332 case 1:
333 df |= 0xB1;
334 break;
335 case 2:
336 df |= 0xA2;
337 break;
338 }
339 return df;
340 }
341
342 static void maven_compute_bwlevel (const struct maven_data* md,
343 int *bl, int *wl) {
344 const int b = md->primary_head->altout.tvo_params.brightness + BLMIN;
345 const int c = md->primary_head->altout.tvo_params.contrast;
346
347 *bl = max(b - c, BLMIN);
348 *wl = min(b + c, WLMAX);
349 }
350
351 static const struct maven_gamma* maven_compute_gamma (const struct maven_data* md) {
352 return maven_gamma + md->primary_head->altout.tvo_params.gamma;
353 }
354
355
356 static void maven_init_TVdata(const struct maven_data* md, struct mavenregs* data) {
357 static struct mavenregs palregs = { {
358 0x2A, 0x09, 0x8A, 0xCB, /* 00: chroma subcarrier */
359 0x00,
360 0x00, /* ? not written */
361 0x00, /* modified by code (F9 written...) */
362 0x00, /* ? not written */
363 0x7E, /* 08 */
364 0x44, /* 09 */
365 0x9C, /* 0A */
366 0x2E, /* 0B */
367 0x21, /* 0C */
368 0x00, /* ? not written */
369 0x3F, 0x03, /* 0E-0F */
370 0x3F, 0x03, /* 10-11 */
371 0x1A, /* 12 */
372 0x2A, /* 13 */
373 0x1C, 0x3D, 0x14, /* 14-16 */
374 0x9C, 0x01, /* 17-18 */
375 0x00, /* 19 */
376 0xFE, /* 1A */
377 0x7E, /* 1B */
378 0x60, /* 1C */
379 0x05, /* 1D */
380 0x89, 0x03, /* 1E-1F */
381 0x72, /* 20 */
382 0x07, /* 21 */
383 0x72, /* 22 */
384 0x00, /* 23 */
385 0x00, /* 24 */
386 0x00, /* 25 */
387 0x08, /* 26 */
388 0x04, /* 27 */
389 0x00, /* 28 */
390 0x1A, /* 29 */
391 0x55, 0x01, /* 2A-2B */
392 0x26, /* 2C */
393 0x07, 0x7E, /* 2D-2E */
394 0x02, 0x54, /* 2F-30 */
395 0xB0, 0x00, /* 31-32 */
396 0x14, /* 33 */
397 0x49, /* 34 */
398 0x00, /* 35 written multiple times */
399 0x00, /* 36 not written */
400 0xA3, /* 37 */
401 0xC8, /* 38 */
402 0x22, /* 39 */
403 0x02, /* 3A */
404 0x22, /* 3B */
405 0x3F, 0x03, /* 3C-3D */
406 0x00, /* 3E written multiple times */
407 0x00, /* 3F not written */
408 }, MATROXFB_OUTPUT_MODE_PAL, 625, 50 };
409 static struct mavenregs ntscregs = { {
410 0x21, 0xF0, 0x7C, 0x1F, /* 00: chroma subcarrier */
411 0x00,
412 0x00, /* ? not written */
413 0x00, /* modified by code (F9 written...) */
414 0x00, /* ? not written */
415 0x7E, /* 08 */
416 0x43, /* 09 */
417 0x7E, /* 0A */
418 0x3D, /* 0B */
419 0x00, /* 0C */
420 0x00, /* ? not written */
421 0x41, 0x00, /* 0E-0F */
422 0x3C, 0x00, /* 10-11 */
423 0x17, /* 12 */
424 0x21, /* 13 */
425 0x1B, 0x1B, 0x24, /* 14-16 */
426 0x83, 0x01, /* 17-18 */
427 0x00, /* 19 */
428 0x0F, /* 1A */
429 0x0F, /* 1B */
430 0x60, /* 1C */
431 0x05, /* 1D */
432 0x89, 0x02, /* 1E-1F */
433 0x5F, /* 20 */
434 0x04, /* 21 */
435 0x5F, /* 22 */
436 0x01, /* 23 */
437 0x02, /* 24 */
438 0x00, /* 25 */
439 0x0A, /* 26 */
440 0x05, /* 27 */
441 0x00, /* 28 */
442 0x10, /* 29 */
443 0xFF, 0x03, /* 2A-2B */
444 0x24, /* 2C */
445 0x0F, 0x78, /* 2D-2E */
446 0x00, 0x00, /* 2F-30 */
447 0xB2, 0x04, /* 31-32 */
448 0x14, /* 33 */
449 0x02, /* 34 */
450 0x00, /* 35 written multiple times */
451 0x00, /* 36 not written */
452 0xA3, /* 37 */
453 0xC8, /* 38 */
454 0x15, /* 39 */
455 0x05, /* 3A */
456 0x3B, /* 3B */
457 0x3C, 0x00, /* 3C-3D */
458 0x00, /* 3E written multiple times */
459 0x00, /* never written */
460 }, MATROXFB_OUTPUT_MODE_NTSC, 525, 60 };
461 MINFO_FROM(md->primary_head);
462
463 if (ACCESS_FBINFO(outputs[1]).mode == MATROXFB_OUTPUT_MODE_PAL)
464 *data = palregs;
465 else
466 *data = ntscregs;
467
468 /* Set deflicker */
469 data->regs[0x93] = maven_compute_deflicker(md);
470
471 /* set gamma */
472 {
473 const struct maven_gamma* g;
474 g = maven_compute_gamma(md);
475 data->regs[0x83] = g->reg83;
476 data->regs[0x84] = g->reg84;
477 data->regs[0x85] = g->reg85;
478 data->regs[0x86] = g->reg86;
479 data->regs[0x87] = g->reg87;
480 data->regs[0x88] = g->reg88;
481 data->regs[0x89] = g->reg89;
482 data->regs[0x8A] = g->reg8a;
483 data->regs[0x8B] = g->reg8b;
484 }
485
486 /* Set contrast / brightness */
487 {
488 int bl, wl;
489 maven_compute_bwlevel (md, &bl, &wl);
490 data->regs[0x0e] = bl >> 2;
491 data->regs[0x0f] = bl & 3;
492 data->regs[0x1e] = wl >> 2;
493 data->regs[0x1f] = wl & 3;
494 }
495
496 /* Set saturation */
497 {
498 data->regs[0x20] =
499 data->regs[0x22] = ACCESS_FBINFO(altout.tvo_params.saturation);
500 }
501
502 /* Set HUE */
503 data->regs[0x25] = ACCESS_FBINFO(altout.tvo_params.hue);
504 return;
505 }
506
507 #define LR(x) maven_set_reg(c, (x), m->regs[(x)])
508 #define LRP(x) maven_set_reg_pair(c, (x), m->regs[(x)] | (m->regs[(x)+1] << 8))
509 static void maven_init_TV(struct i2c_client* c, const struct mavenregs* m) {
510 int val;
511
512
513 maven_set_reg(c, 0x3E, 0x01);
514 maven_get_reg(c, 0x82); /* fetch oscillator state? */
515 maven_set_reg(c, 0x8C, 0x00);
516 maven_get_reg(c, 0x94); /* get 0x82 */
517 maven_set_reg(c, 0x94, 0xA2);
518 /* xmiscctrl */
519
520 maven_set_reg_pair(c, 0x8E, 0x1EFF);
521 maven_set_reg(c, 0xC6, 0x01);
522
523 /* removed code... */
524
525 maven_get_reg(c, 0x06);
526 maven_set_reg(c, 0x06, 0xF9); /* or read |= 0xF0 ? */
527
528 /* removed code here... */
529
530 /* real code begins here? */
531 /* chroma subcarrier */
532 LR(0x00); LR(0x01); LR(0x02); LR(0x03);
533
534 LR(0x04);
535
536 LR(0x2C);
537 LR(0x08);
538 LR(0x0A);
539 LR(0x09);
540 LR(0x29);
541 LRP(0x31);
542 LRP(0x17);
543 LR(0x0B);
544 LR(0x0C);
545 if (m->mode == MATROXFB_OUTPUT_MODE_PAL) {
546 maven_set_reg(c, 0x35, 0x10); /* ... */
547 } else {
548 maven_set_reg(c, 0x35, 0x0F); /* ... */
549 }
550
551 LRP(0x10);
552
553 LRP(0x0E);
554 LRP(0x1E);
555
556 LR(0x20); /* saturation #1 */
557 LR(0x22); /* saturation #2 */
558 LR(0x25); /* hue */
559 LR(0x34);
560 LR(0x33);
561 LR(0x19);
562 LR(0x12);
563 LR(0x3B);
564 LR(0x13);
565 LR(0x39);
566 LR(0x1D);
567 LR(0x3A);
568 LR(0x24);
569 LR(0x14);
570 LR(0x15);
571 LR(0x16);
572 LRP(0x2D);
573 LRP(0x2F);
574 LR(0x1A);
575 LR(0x1B);
576 LR(0x1C);
577 LR(0x23);
578 LR(0x26);
579 LR(0x28);
580 LR(0x27);
581 LR(0x21);
582 LRP(0x2A);
583 if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
584 maven_set_reg(c, 0x35, 0x1D); /* ... */
585 else
586 maven_set_reg(c, 0x35, 0x1C);
587
588 LRP(0x3C);
589 LR(0x37);
590 LR(0x38);
591 maven_set_reg(c, 0xB3, 0x01);
592
593 maven_get_reg(c, 0xB0); /* read 0x80 */
594 maven_set_reg(c, 0xB0, 0x08); /* ugh... */
595 maven_get_reg(c, 0xB9); /* read 0x7C */
596 maven_set_reg(c, 0xB9, 0x78);
597 maven_get_reg(c, 0xBF); /* read 0x00 */
598 maven_set_reg(c, 0xBF, 0x02);
599 maven_get_reg(c, 0x94); /* read 0x82 */
600 maven_set_reg(c, 0x94, 0xB3);
601
602 LR(0x80); /* 04 1A 91 or 05 21 91 */
603 LR(0x81);
604 LR(0x82);
605
606 maven_set_reg(c, 0x8C, 0x20);
607 maven_get_reg(c, 0x8D);
608 maven_set_reg(c, 0x8D, 0x10);
609
610 LR(0x90); /* 4D 50 52 or 4E 05 45 */
611 LR(0x91);
612 LR(0x92);
613
614 LRP(0x9A); /* 0049 or 004F */
615 LRP(0x9C); /* 0004 or 0004 */
616 LRP(0x9E); /* 0458 or 045E */
617 LRP(0xA0); /* 05DA or 051B */
618 LRP(0xA2); /* 00CC or 00CF */
619 LRP(0xA4); /* 007D or 007F */
620 LRP(0xA6); /* 007C or 007E */
621 LRP(0xA8); /* 03CB or 03CE */
622 LRP(0x98); /* 0000 or 0000 */
623 LRP(0xAE); /* 0044 or 003A */
624 LRP(0x96); /* 05DA or 051B */
625 LRP(0xAA); /* 04BC or 046A */
626 LRP(0xAC); /* 004D or 004E */
627
628 LR(0xBE);
629 LR(0xC2);
630
631 maven_get_reg(c, 0x8D);
632 maven_set_reg(c, 0x8D, 0x04);
633
634 LR(0x20); /* saturation #1 */
635 LR(0x22); /* saturation #2 */
636 LR(0x93); /* whoops */
637 LR(0x20); /* oh, saturation #1 again */
638 LR(0x22); /* oh, saturation #2 again */
639 LR(0x25); /* hue */
640 LRP(0x0E);
641 LRP(0x1E);
642 LRP(0x0E); /* problems with memory? */
643 LRP(0x1E); /* yes, matrox must have problems in memory area... */
644
645 /* load gamma correction stuff */
646 LR(0x83);
647 LR(0x84);
648 LR(0x85);
649 LR(0x86);
650 LR(0x87);
651 LR(0x88);
652 LR(0x89);
653 LR(0x8A);
654 LR(0x8B);
655
656 val = maven_get_reg(c, 0x8D);
657 val &= 0x14; /* 0x10 or anything ored with it */
658 maven_set_reg(c, 0x8D, val);
659
660 LR(0x33);
661 LR(0x19);
662 LR(0x12);
663 LR(0x3B);
664 LR(0x13);
665 LR(0x39);
666 LR(0x1D);
667 LR(0x3A);
668 LR(0x24);
669 LR(0x14);
670 LR(0x15);
671 LR(0x16);
672 LRP(0x2D);
673 LRP(0x2F);
674 LR(0x1A);
675 LR(0x1B);
676 LR(0x1C);
677 LR(0x23);
678 LR(0x26);
679 LR(0x28);
680 LR(0x27);
681 LR(0x21);
682 LRP(0x2A);
683 if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
684 maven_set_reg(c, 0x35, 0x1D);
685 else
686 maven_set_reg(c, 0x35, 0x1C);
687 LRP(0x3C);
688 LR(0x37);
689 LR(0x38);
690
691 maven_get_reg(c, 0xB0);
692 LR(0xB0); /* output mode */
693 LR(0x90);
694 LR(0xBE);
695 LR(0xC2);
696
697 LRP(0x9A);
698 LRP(0xA2);
699 LRP(0x9E);
700 LRP(0xA6);
701 LRP(0xAA);
702 LRP(0xAC);
703 maven_set_reg(c, 0x3E, 0x00);
704 maven_set_reg(c, 0x95, 0x20);
705 }
706
707 static int maven_find_exact_clocks(unsigned int ht, unsigned int vt,
708 struct mavenregs* m) {
709 unsigned int x;
710 unsigned int err = ~0;
711
712 /* 1:1 */
713 m->regs[0x80] = 0x0F;
714 m->regs[0x81] = 0x07;
715 m->regs[0x82] = 0x81;
716
717 for (x = 0; x < 8; x++) {
718 unsigned int a, b, c, h2;
719 unsigned int h = ht + 2 + x;
720
721 if (!matroxfb_mavenclock((m->mode == MATROXFB_OUTPUT_MODE_PAL) ? &maven_PAL : &maven_NTSC, h, vt, &a, &b, &c, &h2)) {
722 unsigned int diff = h - h2;
723
724 if (diff < err) {
725 err = diff;
726 m->regs[0x80] = a - 1;
727 m->regs[0x81] = b - 1;
728 m->regs[0x82] = c | 0x80;
729 m->hcorr = h2 - 2;
730 m->htotal = h - 2;
731 }
732 }
733 }
734 return err != ~0U;
735 }
736
737 static inline int maven_compute_timming(struct maven_data* md,
738 struct my_timming* mt,
739 struct mavenregs* m) {
740 unsigned int tmpi;
741 unsigned int a, bv, c;
742 MINFO_FROM(md->primary_head);
743
744 m->mode = ACCESS_FBINFO(outputs[1]).mode;
745 if (m->mode != MATROXFB_OUTPUT_MODE_MONITOR) {
746 unsigned int lmargin;
747 unsigned int umargin;
748 unsigned int vslen;
749 unsigned int hcrt;
750 unsigned int slen;
751
752 maven_init_TVdata(md, m);
753
754 if (maven_find_exact_clocks(mt->HTotal, mt->VTotal, m) == 0)
755 return -EINVAL;
756
757 lmargin = mt->HTotal - mt->HSyncEnd;
758 slen = mt->HSyncEnd - mt->HSyncStart;
759 hcrt = mt->HTotal - slen - mt->delay;
760 umargin = mt->VTotal - mt->VSyncEnd;
761 vslen = mt->VSyncEnd - mt->VSyncStart;
762
763 if (m->hcorr < mt->HTotal)
764 hcrt += m->hcorr;
765 if (hcrt > mt->HTotal)
766 hcrt -= mt->HTotal;
767 if (hcrt + 2 > mt->HTotal)
768 hcrt = 0; /* or issue warning? */
769
770 /* last (first? middle?) line in picture can have different length */
771 /* hlen - 2 */
772 m->regs[0x96] = m->hcorr;
773 m->regs[0x97] = m->hcorr >> 8;
774 /* ... */
775 m->regs[0x98] = 0x00; m->regs[0x99] = 0x00;
776 /* hblanking end */
777 m->regs[0x9A] = lmargin; /* 100% */
778 m->regs[0x9B] = lmargin >> 8; /* 100% */
779 /* who knows */
780 m->regs[0x9C] = 0x04;
781 m->regs[0x9D] = 0x00;
782 /* htotal - 2 */
783 m->regs[0xA0] = m->htotal;
784 m->regs[0xA1] = m->htotal >> 8;
785 /* vblanking end */
786 m->regs[0xA2] = mt->VTotal - mt->VSyncStart - 1; /* stop vblanking */
787 m->regs[0xA3] = (mt->VTotal - mt->VSyncStart - 1) >> 8;
788 /* something end... [A6]+1..[A8] */
789 if (md->version == MGATVO_B) {
790 m->regs[0xA4] = 0x04;
791 m->regs[0xA5] = 0x00;
792 } else {
793 m->regs[0xA4] = 0x01;
794 m->regs[0xA5] = 0x00;
795 }
796 /* something start... 0..[A4]-1 */
797 m->regs[0xA6] = 0x00;
798 m->regs[0xA7] = 0x00;
799 /* vertical line count - 1 */
800 m->regs[0xA8] = mt->VTotal - 1;
801 m->regs[0xA9] = (mt->VTotal - 1) >> 8;
802 /* horizontal vidrst pos */
803 m->regs[0xAA] = hcrt; /* 0 <= hcrt <= htotal - 2 */
804 m->regs[0xAB] = hcrt >> 8;
805 /* vertical vidrst pos */
806 m->regs[0xAC] = mt->VTotal - 2;
807 m->regs[0xAD] = (mt->VTotal - 2) >> 8;
808 /* moves picture up/down and so on... */
809 m->regs[0xAE] = 0x01; /* Fix this... 0..VTotal */
810 m->regs[0xAF] = 0x00;
811 {
812 int hdec;
813 int hlen;
814 unsigned int ibmin = 4 + lmargin + mt->HDisplay;
815 unsigned int ib;
816 int i;
817
818 /* Verify! */
819 /* Where 94208 came from? */
820 if (mt->HTotal)
821 hdec = 94208 / (mt->HTotal);
822 else
823 hdec = 0x81;
824 if (hdec > 0x81)
825 hdec = 0x81;
826 if (hdec < 0x41)
827 hdec = 0x41;
828 hdec--;
829 hlen = 98304 - 128 - ((lmargin + mt->HDisplay - 8) * hdec);
830 if (hlen < 0)
831 hlen = 0;
832 hlen = hlen >> 8;
833 if (hlen > 0xFF)
834 hlen = 0xFF;
835 /* Now we have to compute input buffer length.
836 If you want any picture, it must be between
837 4 + lmargin + xres
838 and
839 94208 / hdec
840 If you want perfect picture even on the top
841 of screen, it must be also
842 0x3C0000 * i / hdec + Q - R / hdec
843 where
844 R Qmin Qmax
845 0x07000 0x5AE 0x5BF
846 0x08000 0x5CF 0x5FF
847 0x0C000 0x653 0x67F
848 0x10000 0x6F8 0x6FF
849 */
850 i = 1;
851 do {
852 ib = ((0x3C0000 * i - 0x8000)/ hdec + 0x05E7) >> 8;
853 i++;
854 } while (ib < ibmin);
855 if (ib >= m->htotal + 2) {
856 ib = ibmin;
857 }
858
859 m->regs[0x90] = hdec; /* < 0x40 || > 0x80 is bad... 0x80 is questionable */
860 m->regs[0xC2] = hlen;
861 /* 'valid' input line length */
862 m->regs[0x9E] = ib;
863 m->regs[0x9F] = ib >> 8;
864 }
865 {
866 int vdec;
867 int vlen;
868
869 #define MATROX_USE64BIT_DIVIDE
870 if (mt->VTotal) {
871 #ifdef MATROX_USE64BIT_DIVIDE
872 u64 f1;
873 u32 a;
874 u32 b;
875
876 a = m->vlines * (m->htotal + 2);
877 b = (mt->VTotal - 1) * (m->htotal + 2) + m->hcorr + 2;
878
879 f1 = ((u64)a) << 15; /* *32768 */
880 do_div(f1, b);
881 vdec = f1;
882 #else
883 vdec = m->vlines * 32768 / mt->VTotal;
884 #endif
885 } else
886 vdec = 0x8000;
887 if (vdec > 0x8000)
888 vdec = 0x8000;
889 vlen = (vslen + umargin + mt->VDisplay) * vdec;
890 vlen = (vlen >> 16) - 146; /* FIXME: 146?! */
891 if (vlen < 0)
892 vlen = 0;
893 if (vlen > 0xFF)
894 vlen = 0xFF;
895 vdec--;
896 m->regs[0x91] = vdec;
897 m->regs[0x92] = vdec >> 8;
898 m->regs[0xBE] = vlen;
899 }
900 m->regs[0xB0] = 0x08; /* output: SVideo/Composite */
901 return 0;
902 }
903
904 DAC1064_calcclock(mt->pixclock, 450000, &a, &bv, &c);
905 m->regs[0x80] = a;
906 m->regs[0x81] = bv;
907 m->regs[0x82] = c | 0x80;
908
909 m->regs[0xB3] = 0x01;
910 m->regs[0x94] = 0xB2;
911
912 /* htotal... */
913 m->regs[0x96] = mt->HTotal;
914 m->regs[0x97] = mt->HTotal >> 8;
915 /* ?? */
916 m->regs[0x98] = 0x00;
917 m->regs[0x99] = 0x00;
918 /* hsync len */
919 tmpi = mt->HSyncEnd - mt->HSyncStart;
920 m->regs[0x9A] = tmpi;
921 m->regs[0x9B] = tmpi >> 8;
922 /* hblank end */
923 tmpi = mt->HTotal - mt->HSyncStart;
924 m->regs[0x9C] = tmpi;
925 m->regs[0x9D] = tmpi >> 8;
926 /* hblank start */
927 tmpi += mt->HDisplay;
928 m->regs[0x9E] = tmpi;
929 m->regs[0x9F] = tmpi >> 8;
930 /* htotal + 1 */
931 tmpi = mt->HTotal + 1;
932 m->regs[0xA0] = tmpi;
933 m->regs[0xA1] = tmpi >> 8;
934 /* vsync?! */
935 tmpi = mt->VSyncEnd - mt->VSyncStart - 1;
936 m->regs[0xA2] = tmpi;
937 m->regs[0xA3] = tmpi >> 8;
938 /* ignored? */
939 tmpi = mt->VTotal - mt->VSyncStart;
940 m->regs[0xA4] = tmpi;
941 m->regs[0xA5] = tmpi >> 8;
942 /* ignored? */
943 tmpi = mt->VTotal - 1;
944 m->regs[0xA6] = tmpi;
945 m->regs[0xA7] = tmpi >> 8;
946 /* vtotal - 1 */
947 m->regs[0xA8] = tmpi;
948 m->regs[0xA9] = tmpi >> 8;
949 /* hor vidrst */
950 tmpi = mt->HTotal - mt->delay;
951 m->regs[0xAA] = tmpi;
952 m->regs[0xAB] = tmpi >> 8;
953 /* vert vidrst */
954 tmpi = mt->VTotal - 2;
955 m->regs[0xAC] = tmpi;
956 m->regs[0xAD] = tmpi >> 8;
957 /* ignored? */
958 m->regs[0xAE] = 0x00;
959 m->regs[0xAF] = 0x00;
960
961 m->regs[0xB0] = 0x03; /* output: monitor */
962 m->regs[0xB1] = 0xA0; /* ??? */
963 m->regs[0x8C] = 0x20; /* must be set... */
964 m->regs[0x8D] = 0x04; /* defaults to 0x10: test signal */
965 m->regs[0xB9] = 0x1A; /* defaults to 0x2C: too bright */
966 m->regs[0xBF] = 0x22; /* makes picture stable */
967
968 return 0;
969 }
970
971 static inline int maven_program_timming(struct maven_data* md,
972 const struct mavenregs* m) {
973 struct i2c_client* c = md->client;
974
975 if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) {
976 LR(0x80);
977 LR(0x81);
978 LR(0x82);
979
980 LR(0xB3);
981 LR(0x94);
982
983 LRP(0x96);
984 LRP(0x98);
985 LRP(0x9A);
986 LRP(0x9C);
987 LRP(0x9E);
988 LRP(0xA0);
989 LRP(0xA2);
990 LRP(0xA4);
991 LRP(0xA6);
992 LRP(0xA8);
993 LRP(0xAA);
994 LRP(0xAC);
995 LRP(0xAE);
996
997 LR(0xB0); /* output: monitor */
998 LR(0xB1); /* ??? */
999 LR(0x8C); /* must be set... */
1000 LR(0x8D); /* defaults to 0x10: test signal */
1001 LR(0xB9); /* defaults to 0x2C: too bright */
1002 LR(0xBF); /* makes picture stable */
1003 } else {
1004 maven_init_TV(c, m);
1005 }
1006 return 0;
1007 }
1008
1009 static inline int maven_resync(struct maven_data* md) {
1010 struct i2c_client* c = md->client;
1011 maven_set_reg(c, 0x95, 0x20); /* start whole thing */
1012 return 0;
1013 }
1014
1015 static int maven_get_queryctrl (struct maven_data* md,
1016 struct v4l2_queryctrl *p) {
1017 int i;
1018
1019 i = get_ctrl_id(p->id);
1020 if (i >= 0) {
1021 *p = maven_controls[i].desc;
1022 return 0;
1023 }
1024 if (i == -ENOENT) {
1025 static const struct v4l2_queryctrl disctrl =
1026 { .flags = V4L2_CTRL_FLAG_DISABLED };
1027
1028 i = p->id;
1029 *p = disctrl;
1030 p->id = i;
1031 sprintf(p->name, "Ctrl #%08X", i);
1032 return 0;
1033 }
1034 return -EINVAL;
1035 }
1036
1037 static int maven_set_control (struct maven_data* md,
1038 struct v4l2_control *p) {
1039 int i;
1040
1041 i = get_ctrl_id(p->id);
1042 if (i < 0) return -EINVAL;
1043
1044 /*
1045 * Check if changed.
1046 */
1047 if (p->value == *get_ctrl_ptr(md, i)) return 0;
1048
1049 /*
1050 * Check limits.
1051 */
1052 if (p->value > maven_controls[i].desc.maximum) return -EINVAL;
1053 if (p->value < maven_controls[i].desc.minimum) return -EINVAL;
1054
1055 /*
1056 * Store new value.
1057 */
1058 *get_ctrl_ptr(md, i) = p->value;
1059
1060 switch (p->id) {
1061 case V4L2_CID_BRIGHTNESS:
1062 case V4L2_CID_CONTRAST:
1063 {
1064 int blacklevel, whitelevel;
1065 maven_compute_bwlevel(md, &blacklevel, &whitelevel);
1066 blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8);
1067 whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8);
1068 maven_set_reg_pair(md->client, 0x0e, blacklevel);
1069 maven_set_reg_pair(md->client, 0x1e, whitelevel);
1070 }
1071 break;
1072 case V4L2_CID_SATURATION:
1073 {
1074 maven_set_reg(md->client, 0x20, p->value);
1075 maven_set_reg(md->client, 0x22, p->value);
1076 }
1077 break;
1078 case V4L2_CID_HUE:
1079 {
1080 maven_set_reg(md->client, 0x25, p->value);
1081 }
1082 break;
1083 case V4L2_CID_GAMMA:
1084 {
1085 const struct maven_gamma* g;
1086 g = maven_compute_gamma(md);
1087 maven_set_reg(md->client, 0x83, g->reg83);
1088 maven_set_reg(md->client, 0x84, g->reg84);
1089 maven_set_reg(md->client, 0x85, g->reg85);
1090 maven_set_reg(md->client, 0x86, g->reg86);
1091 maven_set_reg(md->client, 0x87, g->reg87);
1092 maven_set_reg(md->client, 0x88, g->reg88);
1093 maven_set_reg(md->client, 0x89, g->reg89);
1094 maven_set_reg(md->client, 0x8a, g->reg8a);
1095 maven_set_reg(md->client, 0x8b, g->reg8b);
1096 }
1097 break;
1098 case MATROXFB_CID_TESTOUT:
1099 {
1100 unsigned char val
1101 = maven_get_reg (md->client,0x8d);
1102 if (p->value) val |= 0x10;
1103 else val &= ~0x10;
1104 maven_set_reg (md->client, 0x8d, val);
1105 }
1106 break;
1107 case MATROXFB_CID_DEFLICKER:
1108 {
1109 maven_set_reg(md->client, 0x93, maven_compute_deflicker(md));
1110 }
1111 break;
1112 }
1113
1114
1115 return 0;
1116 }
1117
1118 static int maven_get_control (struct maven_data* md,
1119 struct v4l2_control *p) {
1120 int i;
1121
1122 i = get_ctrl_id(p->id);
1123 if (i < 0) return -EINVAL;
1124 p->value = *get_ctrl_ptr(md, i);
1125 return 0;
1126 }
1127
1128 /******************************************************/
1129
1130 static int maven_out_compute(void* md, struct my_timming* mt) {
1131 #define mdinfo ((struct maven_data*)md)
1132 #define minfo (mdinfo->primary_head)
1133 return maven_compute_timming(md, mt, &ACCESS_FBINFO(hw).maven);
1134 #undef minfo
1135 #undef mdinfo
1136 }
1137
1138 static int maven_out_program(void* md) {
1139 #define mdinfo ((struct maven_data*)md)
1140 #define minfo (mdinfo->primary_head)
1141 return maven_program_timming(md, &ACCESS_FBINFO(hw).maven);
1142 #undef minfo
1143 #undef mdinfo
1144 }
1145
1146 static int maven_out_start(void* md) {
1147 return maven_resync(md);
1148 }
1149
1150 static int maven_out_verify_mode(void* md, u_int32_t arg) {
1151 switch (arg) {
1152 case MATROXFB_OUTPUT_MODE_PAL:
1153 case MATROXFB_OUTPUT_MODE_NTSC:
1154 case MATROXFB_OUTPUT_MODE_MONITOR:
1155 return 0;
1156 }
1157 return -EINVAL;
1158 }
1159
1160 static int maven_out_get_queryctrl(void* md, struct v4l2_queryctrl* p) {
1161 return maven_get_queryctrl(md, p);
1162 }
1163
1164 static int maven_out_get_ctrl(void* md, struct v4l2_control* p) {
1165 return maven_get_control(md, p);
1166 }
1167
1168 static int maven_out_set_ctrl(void* md, struct v4l2_control* p) {
1169 return maven_set_control(md, p);
1170 }
1171
1172 static struct matrox_altout maven_altout = {
1173 .name = "Secondary output",
1174 .compute = maven_out_compute,
1175 .program = maven_out_program,
1176 .start = maven_out_start,
1177 .verifymode = maven_out_verify_mode,
1178 .getqueryctrl = maven_out_get_queryctrl,
1179 .getctrl = maven_out_get_ctrl,
1180 .setctrl = maven_out_set_ctrl,
1181 };
1182
1183 static int maven_init_client(struct i2c_client* clnt) {
1184 struct maven_data* md = i2c_get_clientdata(clnt);
1185 MINFO_FROM(container_of(clnt->adapter, struct i2c_bit_adapter, adapter)->minfo);
1186
1187 md->primary_head = MINFO;
1188 md->client = clnt;
1189 down_write(&ACCESS_FBINFO(altout.lock));
1190 ACCESS_FBINFO(outputs[1]).output = &maven_altout;
1191 ACCESS_FBINFO(outputs[1]).src = ACCESS_FBINFO(outputs[1]).default_src;
1192 ACCESS_FBINFO(outputs[1]).data = md;
1193 ACCESS_FBINFO(outputs[1]).mode = MATROXFB_OUTPUT_MODE_MONITOR;
1194 up_write(&ACCESS_FBINFO(altout.lock));
1195 if (maven_get_reg(clnt, 0xB2) < 0x14) {
1196 md->version = MGATVO_B;
1197 /* Tweak some things for this old chip */
1198 } else {
1199 md->version = MGATVO_C;
1200 }
1201 /*
1202 * Set all parameters to its initial values.
1203 */
1204 {
1205 unsigned int i;
1206
1207 for (i = 0; i < MAVCTRLS; ++i) {
1208 *get_ctrl_ptr(md, i) = maven_controls[i].desc.default_value;
1209 }
1210 }
1211
1212 return 0;
1213 }
1214
1215 static int maven_shutdown_client(struct i2c_client* clnt) {
1216 struct maven_data* md = i2c_get_clientdata(clnt);
1217
1218 if (md->primary_head) {
1219 MINFO_FROM(md->primary_head);
1220
1221 down_write(&ACCESS_FBINFO(altout.lock));
1222 ACCESS_FBINFO(outputs[1]).src = MATROXFB_SRC_NONE;
1223 ACCESS_FBINFO(outputs[1]).output = NULL;
1224 ACCESS_FBINFO(outputs[1]).data = NULL;
1225 ACCESS_FBINFO(outputs[1]).mode = MATROXFB_OUTPUT_MODE_MONITOR;
1226 up_write(&ACCESS_FBINFO(altout.lock));
1227 md->primary_head = NULL;
1228 }
1229 return 0;
1230 }
1231
1232 static unsigned short normal_i2c[] = { MAVEN_I2CID, I2C_CLIENT_END };
1233 I2C_CLIENT_INSMOD;
1234
1235 static struct i2c_driver maven_driver;
1236
1237 static int maven_detect_client(struct i2c_adapter* adapter, int address, int kind) {
1238 int err = 0;
1239 struct i2c_client* new_client;
1240 struct maven_data* data;
1241
1242 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_WORD_DATA |
1243 I2C_FUNC_SMBUS_BYTE_DATA |
1244 I2C_FUNC_PROTOCOL_MANGLING))
1245 goto ERROR0;
1246 if (!(new_client = (struct i2c_client*)kmalloc(sizeof(*new_client) + sizeof(*data),
1247 GFP_KERNEL))) {
1248 err = -ENOMEM;
1249 goto ERROR0;
1250 }
1251 memset(new_client, 0, sizeof(*new_client) + sizeof(*data));
1252 data = (struct maven_data*)(new_client + 1);
1253 i2c_set_clientdata(new_client, data);
1254 new_client->addr = address;
1255 new_client->adapter = adapter;
1256 new_client->driver = &maven_driver;
1257 new_client->flags = 0;
1258 strcpy(new_client->name, "maven client");
1259 if ((err = i2c_attach_client(new_client)))
1260 goto ERROR3;
1261 err = maven_init_client(new_client);
1262 if (err)
1263 goto ERROR4;
1264 return 0;
1265 ERROR4:;
1266 i2c_detach_client(new_client);
1267 ERROR3:;
1268 kfree(new_client);
1269 ERROR0:;
1270 return err;
1271 }
1272
1273 static int maven_attach_adapter(struct i2c_adapter* adapter) {
1274 if (adapter->id == I2C_HW_B_G400)
1275 return i2c_probe(adapter, &addr_data, &maven_detect_client);
1276 return 0;
1277 }
1278
1279 static int maven_detach_client(struct i2c_client* client) {
1280 int err;
1281
1282 if ((err = i2c_detach_client(client))) {
1283 printk(KERN_ERR "maven: Cannot deregister client\n");
1284 return err;
1285 }
1286 maven_shutdown_client(client);
1287 kfree(client);
1288 return 0;
1289 }
1290
1291 static int maven_command(struct i2c_client* client, unsigned int cmd, void* arg) {
1292 return -ENOIOCTLCMD; /* or -EINVAL, depends on who will call this */
1293 }
1294
1295 static struct i2c_driver maven_driver={
1296 .owner = THIS_MODULE,
1297 .name = "maven",
1298 .id = I2C_DRIVERID_MGATVO,
1299 .flags = I2C_DF_NOTIFY,
1300 .attach_adapter = maven_attach_adapter,
1301 .detach_client = maven_detach_client,
1302 .command = maven_command,
1303 };
1304
1305 /* ************************** */
1306
1307 static int matroxfb_maven_init(void) {
1308 int err;
1309
1310 err = i2c_add_driver(&maven_driver);
1311 if (err) {
1312 printk(KERN_ERR "maven: Maven driver failed to register (%d).\n", err);
1313 return err;
1314 }
1315 return 0;
1316 }
1317
1318 static void matroxfb_maven_exit(void) {
1319 i2c_del_driver(&maven_driver);
1320 }
1321
1322 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
1323 MODULE_DESCRIPTION("Matrox G200/G400 Matrox MGA-TVO driver");
1324 MODULE_LICENSE("GPL");
1325 module_init(matroxfb_maven_init);
1326 module_exit(matroxfb_maven_exit);
1327 /* we do not have __setup() yet */
Linux with added FPC-III support