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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / video / matrox / matroxfb_maven.c
blob31b8f67477b7957b8e193f757c4821e810b685a3
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 <linux/slab.h>
21 #include <asm/div64.h>
22
23 #define MGATVO_B 1
24 #define MGATVO_C 2
25
26 static const struct maven_gamma {
27 unsigned char reg83;
28 unsigned char reg84;
29 unsigned char reg85;
30 unsigned char reg86;
31 unsigned char reg87;
32 unsigned char reg88;
33 unsigned char reg89;
34 unsigned char reg8a;
35 unsigned char reg8b;
36 } maven_gamma[] = {
37 { 131, 57, 223, 15, 117, 212, 251, 91, 156},
38 { 133, 61, 128, 63, 180, 147, 195, 100, 180},
39 { 131, 19, 63, 31, 50, 66, 171, 64, 176},
40 { 0, 0, 0, 31, 16, 16, 16, 100, 200},
41 { 8, 23, 47, 73, 147, 244, 220, 80, 195},
42 { 22, 43, 64, 80, 147, 115, 58, 85, 168},
43 { 34, 60, 80, 214, 147, 212, 188, 85, 167},
44 { 45, 77, 96, 216, 147, 99, 91, 85, 159},
45 { 56, 76, 112, 107, 147, 212, 148, 64, 144},
46 { 65, 91, 128, 137, 147, 196, 17, 69, 148},
47 { 72, 104, 136, 138, 147, 180, 245, 73, 147},
48 { 87, 116, 143, 126, 16, 83, 229, 77, 144},
49 { 95, 119, 152, 254, 244, 83, 221, 77, 151},
50 { 100, 129, 159, 156, 244, 148, 197, 77, 160},
51 { 105, 141, 167, 247, 244, 132, 181, 84, 166},
52 { 105, 147, 168, 247, 244, 245, 181, 90, 170},
53 { 120, 153, 175, 248, 212, 229, 165, 90, 180},
54 { 119, 156, 176, 248, 244, 229, 84, 74, 160},
55 { 119, 158, 183, 248, 244, 229, 149, 78, 165}
56 };
57
58 /* Definition of the various controls */
59 struct mctl {
60 struct v4l2_queryctrl desc;
61 size_t control;
62 };
63
64 #define BLMIN 0x0FF
65 #define WLMAX 0x3FF
66
67 static const struct mctl maven_controls[] =
68 { { { V4L2_CID_BRIGHTNESS, V4L2_CTRL_TYPE_INTEGER,
69 "brightness",
70 0, WLMAX - BLMIN, 1, 379 - BLMIN,
71 0,
72 }, offsetof(struct matrox_fb_info, altout.tvo_params.brightness) },
73 { { V4L2_CID_CONTRAST, V4L2_CTRL_TYPE_INTEGER,
74 "contrast",
75 0, 1023, 1, 127,
76 0,
77 }, offsetof(struct matrox_fb_info, altout.tvo_params.contrast) },
78 { { V4L2_CID_SATURATION, V4L2_CTRL_TYPE_INTEGER,
79 "saturation",
80 0, 255, 1, 155,
81 0,
82 }, offsetof(struct matrox_fb_info, altout.tvo_params.saturation) },
83 { { V4L2_CID_HUE, V4L2_CTRL_TYPE_INTEGER,
84 "hue",
85 0, 255, 1, 0,
86 0,
87 }, offsetof(struct matrox_fb_info, altout.tvo_params.hue) },
88 { { V4L2_CID_GAMMA, V4L2_CTRL_TYPE_INTEGER,
89 "gamma",
90 0, ARRAY_SIZE(maven_gamma) - 1, 1, 3,
91 0,
92 }, offsetof(struct matrox_fb_info, altout.tvo_params.gamma) },
93 { { MATROXFB_CID_TESTOUT, V4L2_CTRL_TYPE_BOOLEAN,
94 "test output",
95 0, 1, 1, 0,
96 0,
97 }, offsetof(struct matrox_fb_info, altout.tvo_params.testout) },
98 { { MATROXFB_CID_DEFLICKER, V4L2_CTRL_TYPE_INTEGER,
99 "deflicker mode",
100 0, 2, 1, 0,
101 0,
102 }, offsetof(struct matrox_fb_info, altout.tvo_params.deflicker) },
103
104 };
105
106 #define MAVCTRLS ARRAY_SIZE(maven_controls)
107
108 /* Return: positive number: id found
109 -EINVAL: id not found, return failure
110 -ENOENT: id not found, create fake disabled control */
111 static int get_ctrl_id(__u32 v4l2_id) {
112 int i;
113
114 for (i = 0; i < MAVCTRLS; i++) {
115 if (v4l2_id < maven_controls[i].desc.id) {
116 if (maven_controls[i].desc.id == 0x08000000) {
117 return -EINVAL;
118 }
119 return -ENOENT;
120 }
121 if (v4l2_id == maven_controls[i].desc.id) {
122 return i;
123 }
124 }
125 return -EINVAL;
126 }
127
128 struct maven_data {
129 struct matrox_fb_info* primary_head;
130 struct i2c_client *client;
131 int version;
132 };
133
134 static int* get_ctrl_ptr(struct maven_data* md, int idx) {
135 return (int*)((char*)(md->primary_head) + maven_controls[idx].control);
136 }
137
138 static int maven_get_reg(struct i2c_client* c, char reg) {
139 char dst;
140 struct i2c_msg msgs[] = {{ c->addr, I2C_M_REV_DIR_ADDR, sizeof(reg), &reg },
141 { c->addr, I2C_M_RD | I2C_M_NOSTART, sizeof(dst), &dst }};
142 s32 err;
143
144 err = i2c_transfer(c->adapter, msgs, 2);
145 if (err < 0)
146 printk(KERN_INFO "ReadReg(%d) failed\n", reg);
147 return dst & 0xFF;
148 }
149
150 static int maven_set_reg(struct i2c_client* c, int reg, int val) {
151 s32 err;
152
153 err = i2c_smbus_write_byte_data(c, reg, val);
154 if (err)
155 printk(KERN_INFO "WriteReg(%d) failed\n", reg);
156 return err;
157 }
158
159 static int maven_set_reg_pair(struct i2c_client* c, int reg, int val) {
160 s32 err;
161
162 err = i2c_smbus_write_word_data(c, reg, val);
163 if (err)
164 printk(KERN_INFO "WriteRegPair(%d) failed\n", reg);
165 return err;
166 }
167
168 static const struct matrox_pll_features maven_pll = {
169 50000,
170 27000,
171 4, 127,
172 2, 31,
173 3
174 };
175
176 struct matrox_pll_features2 {
177 unsigned int vco_freq_min;
178 unsigned int vco_freq_max;
179 unsigned int feed_div_min;
180 unsigned int feed_div_max;
181 unsigned int in_div_min;
182 unsigned int in_div_max;
183 unsigned int post_shift_max;
184 };
185
186 struct matrox_pll_ctl {
187 unsigned int ref_freq;
188 unsigned int den;
189 };
190
191 static const struct matrox_pll_features2 maven1000_pll = {
192 50000000,
193 300000000,
194 5, 128,
195 3, 32,
196 3
197 };
198
199 static const struct matrox_pll_ctl maven_PAL = {
200 540000,
201 50
202 };
203
204 static const struct matrox_pll_ctl maven_NTSC = {
205 450450, /* 27027000/60 == 27000000/59.94005994 */
206 60
207 };
208
209 static int matroxfb_PLL_mavenclock(const struct matrox_pll_features2* pll,
210 const struct matrox_pll_ctl* ctl,
211 unsigned int htotal, unsigned int vtotal,
212 unsigned int* in, unsigned int* feed, unsigned int* post,
213 unsigned int* h2) {
214 unsigned int besth2 = 0;
215 unsigned int fxtal = ctl->ref_freq;
216 unsigned int fmin = pll->vco_freq_min / ctl->den;
217 unsigned int fwant;
218 unsigned int p;
219 unsigned int scrlen;
220 unsigned int fmax;
221
222 DBG(__func__)
223
224 scrlen = htotal * (vtotal - 1);
225 fwant = htotal * vtotal;
226 fmax = pll->vco_freq_max / ctl->den;
227
228 dprintk(KERN_DEBUG "want: %u, xtal: %u, h: %u, v: %u, fmax: %u\n",
229 fwant, fxtal, htotal, vtotal, fmax);
230 for (p = 1; p <= pll->post_shift_max; p++) {
231 if (fwant * 2 > fmax)
232 break;
233 fwant *= 2;
234 }
235 if (fwant > fmax)
236 return 0;
237 for (; p-- > 0; fwant >>= 1) {
238 unsigned int m;
239
240 if (fwant < fmin) break;
241 for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
242 unsigned int n;
243 unsigned int dvd;
244 unsigned int ln;
245
246 n = (fwant * m) / fxtal;
247 if (n < pll->feed_div_min)
248 continue;
249 if (n > pll->feed_div_max)
250 break;
251
252 ln = fxtal * n;
253 dvd = m << p;
254
255 if (ln % dvd)
256 continue;
257 ln = ln / dvd;
258
259 if (ln < scrlen + 2)
260 continue;
261 ln = ln - scrlen;
262 if (ln > htotal)
263 continue;
264 dprintk(KERN_DEBUG "Match: %u / %u / %u / %u\n", n, m, p, ln);
265 if (ln > besth2) {
266 dprintk(KERN_DEBUG "Better...\n");
267 *h2 = besth2 = ln;
268 *post = p;
269 *in = m;
270 *feed = n;
271 }
272 }
273 }
274
275 /* if h2/post/in/feed have not been assigned, return zero (error) */
276 if (besth2 < 2)
277 return 0;
278
279 dprintk(KERN_ERR "clk: %02X %02X %02X %d %d\n", *in, *feed, *post, fxtal, fwant);
280 return fxtal * (*feed) / (*in) * ctl->den;
281 }
282
283 static int matroxfb_mavenclock(const struct matrox_pll_ctl *ctl,
284 unsigned int htotal, unsigned int vtotal,
285 unsigned int* in, unsigned int* feed, unsigned int* post,
286 unsigned int* htotal2) {
287 unsigned int fvco;
288 unsigned int uninitialized_var(p);
289
290 fvco = matroxfb_PLL_mavenclock(&maven1000_pll, ctl, htotal, vtotal, in, feed, &p, htotal2);
291 if (!fvco)
292 return -EINVAL;
293 p = (1 << p) - 1;
294 if (fvco <= 100000000)
295 ;
296 else if (fvco <= 140000000)
297 p |= 0x08;
298 else if (fvco <= 180000000)
299 p |= 0x10;
300 else
301 p |= 0x18;
302 *post = p;
303 return 0;
304 }
305
306 static void DAC1064_calcclock(unsigned int freq, unsigned int fmax,
307 unsigned int* in, unsigned int* feed, unsigned int* post) {
308 unsigned int fvco;
309 unsigned int p;
310
311 fvco = matroxfb_PLL_calcclock(&maven_pll, freq, fmax, in, feed, &p);
312 p = (1 << p) - 1;
313 if (fvco <= 100000)
314 ;
315 else if (fvco <= 140000)
316 p |= 0x08;
317 else if (fvco <= 180000)
318 p |= 0x10;
319 else
320 p |= 0x18;
321 *post = p;
322 return;
323 }
324
325 static unsigned char maven_compute_deflicker (const struct maven_data* md) {
326 unsigned char df;
327
328 df = (md->version == MGATVO_B?0x40:0x00);
329 switch (md->primary_head->altout.tvo_params.deflicker) {
330 case 0:
331 /* df |= 0x00; */
332 break;
333 case 1:
334 df |= 0xB1;
335 break;
336 case 2:
337 df |= 0xA2;
338 break;
339 }
340 return df;
341 }
342
343 static void maven_compute_bwlevel (const struct maven_data* md,
344 int *bl, int *wl) {
345 const int b = md->primary_head->altout.tvo_params.brightness + BLMIN;
346 const int c = md->primary_head->altout.tvo_params.contrast;
347
348 *bl = max(b - c, BLMIN);
349 *wl = min(b + c, WLMAX);
350 }
351
352 static const struct maven_gamma* maven_compute_gamma (const struct maven_data* md) {
353 return maven_gamma + md->primary_head->altout.tvo_params.gamma;
354 }
355
356
357 static void maven_init_TVdata(const struct maven_data* md, struct mavenregs* data) {
358 static struct mavenregs palregs = { {
359 0x2A, 0x09, 0x8A, 0xCB, /* 00: chroma subcarrier */
360 0x00,
361 0x00, /* ? not written */
362 0x00, /* modified by code (F9 written...) */
363 0x00, /* ? not written */
364 0x7E, /* 08 */
365 0x44, /* 09 */
366 0x9C, /* 0A */
367 0x2E, /* 0B */
368 0x21, /* 0C */
369 0x00, /* ? not written */
370 0x3F, 0x03, /* 0E-0F */
371 0x3F, 0x03, /* 10-11 */
372 0x1A, /* 12 */
373 0x2A, /* 13 */
374 0x1C, 0x3D, 0x14, /* 14-16 */
375 0x9C, 0x01, /* 17-18 */
376 0x00, /* 19 */
377 0xFE, /* 1A */
378 0x7E, /* 1B */
379 0x60, /* 1C */
380 0x05, /* 1D */
381 0x89, 0x03, /* 1E-1F */
382 0x72, /* 20 */
383 0x07, /* 21 */
384 0x72, /* 22 */
385 0x00, /* 23 */
386 0x00, /* 24 */
387 0x00, /* 25 */
388 0x08, /* 26 */
389 0x04, /* 27 */
390 0x00, /* 28 */
391 0x1A, /* 29 */
392 0x55, 0x01, /* 2A-2B */
393 0x26, /* 2C */
394 0x07, 0x7E, /* 2D-2E */
395 0x02, 0x54, /* 2F-30 */
396 0xB0, 0x00, /* 31-32 */
397 0x14, /* 33 */
398 0x49, /* 34 */
399 0x00, /* 35 written multiple times */
400 0x00, /* 36 not written */
401 0xA3, /* 37 */
402 0xC8, /* 38 */
403 0x22, /* 39 */
404 0x02, /* 3A */
405 0x22, /* 3B */
406 0x3F, 0x03, /* 3C-3D */
407 0x00, /* 3E written multiple times */
408 0x00, /* 3F not written */
409 }, MATROXFB_OUTPUT_MODE_PAL, 625, 50 };
410 static struct mavenregs ntscregs = { {
411 0x21, 0xF0, 0x7C, 0x1F, /* 00: chroma subcarrier */
412 0x00,
413 0x00, /* ? not written */
414 0x00, /* modified by code (F9 written...) */
415 0x00, /* ? not written */
416 0x7E, /* 08 */
417 0x43, /* 09 */
418 0x7E, /* 0A */
419 0x3D, /* 0B */
420 0x00, /* 0C */
421 0x00, /* ? not written */
422 0x41, 0x00, /* 0E-0F */
423 0x3C, 0x00, /* 10-11 */
424 0x17, /* 12 */
425 0x21, /* 13 */
426 0x1B, 0x1B, 0x24, /* 14-16 */
427 0x83, 0x01, /* 17-18 */
428 0x00, /* 19 */
429 0x0F, /* 1A */
430 0x0F, /* 1B */
431 0x60, /* 1C */
432 0x05, /* 1D */
433 0x89, 0x02, /* 1E-1F */
434 0x5F, /* 20 */
435 0x04, /* 21 */
436 0x5F, /* 22 */
437 0x01, /* 23 */
438 0x02, /* 24 */
439 0x00, /* 25 */
440 0x0A, /* 26 */
441 0x05, /* 27 */
442 0x00, /* 28 */
443 0x10, /* 29 */
444 0xFF, 0x03, /* 2A-2B */
445 0x24, /* 2C */
446 0x0F, 0x78, /* 2D-2E */
447 0x00, 0x00, /* 2F-30 */
448 0xB2, 0x04, /* 31-32 */
449 0x14, /* 33 */
450 0x02, /* 34 */
451 0x00, /* 35 written multiple times */
452 0x00, /* 36 not written */
453 0xA3, /* 37 */
454 0xC8, /* 38 */
455 0x15, /* 39 */
456 0x05, /* 3A */
457 0x3B, /* 3B */
458 0x3C, 0x00, /* 3C-3D */
459 0x00, /* 3E written multiple times */
460 0x00, /* never written */
461 }, MATROXFB_OUTPUT_MODE_NTSC, 525, 60 };
462 struct matrox_fb_info *minfo = md->primary_head;
463
464 if (minfo->outputs[1].mode == MATROXFB_OUTPUT_MODE_PAL)
465 *data = palregs;
466 else
467 *data = ntscregs;
468
469 /* Set deflicker */
470 data->regs[0x93] = maven_compute_deflicker(md);
471
472 /* set gamma */
473 {
474 const struct maven_gamma* g;
475 g = maven_compute_gamma(md);
476 data->regs[0x83] = g->reg83;
477 data->regs[0x84] = g->reg84;
478 data->regs[0x85] = g->reg85;
479 data->regs[0x86] = g->reg86;
480 data->regs[0x87] = g->reg87;
481 data->regs[0x88] = g->reg88;
482 data->regs[0x89] = g->reg89;
483 data->regs[0x8A] = g->reg8a;
484 data->regs[0x8B] = g->reg8b;
485 }
486
487 /* Set contrast / brightness */
488 {
489 int bl, wl;
490 maven_compute_bwlevel (md, &bl, &wl);
491 data->regs[0x0e] = bl >> 2;
492 data->regs[0x0f] = bl & 3;
493 data->regs[0x1e] = wl >> 2;
494 data->regs[0x1f] = wl & 3;
495 }
496
497 /* Set saturation */
498 {
499 data->regs[0x20] =
500 data->regs[0x22] = minfo->altout.tvo_params.saturation;
501 }
502
503 /* Set HUE */
504 data->regs[0x25] = minfo->altout.tvo_params.hue;
505 return;
506 }
507
508 #define LR(x) maven_set_reg(c, (x), m->regs[(x)])
509 #define LRP(x) maven_set_reg_pair(c, (x), m->regs[(x)] | (m->regs[(x)+1] << 8))
510 static void maven_init_TV(struct i2c_client* c, const struct mavenregs* m) {
511 int val;
512
513
514 maven_set_reg(c, 0x3E, 0x01);
515 maven_get_reg(c, 0x82); /* fetch oscillator state? */
516 maven_set_reg(c, 0x8C, 0x00);
517 maven_get_reg(c, 0x94); /* get 0x82 */
518 maven_set_reg(c, 0x94, 0xA2);
519 /* xmiscctrl */
520
521 maven_set_reg_pair(c, 0x8E, 0x1EFF);
522 maven_set_reg(c, 0xC6, 0x01);
523
524 /* removed code... */
525
526 maven_get_reg(c, 0x06);
527 maven_set_reg(c, 0x06, 0xF9); /* or read |= 0xF0 ? */
528
529 /* removed code here... */
530
531 /* real code begins here? */
532 /* chroma subcarrier */
533 LR(0x00); LR(0x01); LR(0x02); LR(0x03);
534
535 LR(0x04);
536
537 LR(0x2C);
538 LR(0x08);
539 LR(0x0A);
540 LR(0x09);
541 LR(0x29);
542 LRP(0x31);
543 LRP(0x17);
544 LR(0x0B);
545 LR(0x0C);
546 if (m->mode == MATROXFB_OUTPUT_MODE_PAL) {
547 maven_set_reg(c, 0x35, 0x10); /* ... */
548 } else {
549 maven_set_reg(c, 0x35, 0x0F); /* ... */
550 }
551
552 LRP(0x10);
553
554 LRP(0x0E);
555 LRP(0x1E);
556
557 LR(0x20); /* saturation #1 */
558 LR(0x22); /* saturation #2 */
559 LR(0x25); /* hue */
560 LR(0x34);
561 LR(0x33);
562 LR(0x19);
563 LR(0x12);
564 LR(0x3B);
565 LR(0x13);
566 LR(0x39);
567 LR(0x1D);
568 LR(0x3A);
569 LR(0x24);
570 LR(0x14);
571 LR(0x15);
572 LR(0x16);
573 LRP(0x2D);
574 LRP(0x2F);
575 LR(0x1A);
576 LR(0x1B);
577 LR(0x1C);
578 LR(0x23);
579 LR(0x26);
580 LR(0x28);
581 LR(0x27);
582 LR(0x21);
583 LRP(0x2A);
584 if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
585 maven_set_reg(c, 0x35, 0x1D); /* ... */
586 else
587 maven_set_reg(c, 0x35, 0x1C);
588
589 LRP(0x3C);
590 LR(0x37);
591 LR(0x38);
592 maven_set_reg(c, 0xB3, 0x01);
593
594 maven_get_reg(c, 0xB0); /* read 0x80 */
595 maven_set_reg(c, 0xB0, 0x08); /* ugh... */
596 maven_get_reg(c, 0xB9); /* read 0x7C */
597 maven_set_reg(c, 0xB9, 0x78);
598 maven_get_reg(c, 0xBF); /* read 0x00 */
599 maven_set_reg(c, 0xBF, 0x02);
600 maven_get_reg(c, 0x94); /* read 0x82 */
601 maven_set_reg(c, 0x94, 0xB3);
602
603 LR(0x80); /* 04 1A 91 or 05 21 91 */
604 LR(0x81);
605 LR(0x82);
606
607 maven_set_reg(c, 0x8C, 0x20);
608 maven_get_reg(c, 0x8D);
609 maven_set_reg(c, 0x8D, 0x10);
610
611 LR(0x90); /* 4D 50 52 or 4E 05 45 */
612 LR(0x91);
613 LR(0x92);
614
615 LRP(0x9A); /* 0049 or 004F */
616 LRP(0x9C); /* 0004 or 0004 */
617 LRP(0x9E); /* 0458 or 045E */
618 LRP(0xA0); /* 05DA or 051B */
619 LRP(0xA2); /* 00CC or 00CF */
620 LRP(0xA4); /* 007D or 007F */
621 LRP(0xA6); /* 007C or 007E */
622 LRP(0xA8); /* 03CB or 03CE */
623 LRP(0x98); /* 0000 or 0000 */
624 LRP(0xAE); /* 0044 or 003A */
625 LRP(0x96); /* 05DA or 051B */
626 LRP(0xAA); /* 04BC or 046A */
627 LRP(0xAC); /* 004D or 004E */
628
629 LR(0xBE);
630 LR(0xC2);
631
632 maven_get_reg(c, 0x8D);
633 maven_set_reg(c, 0x8D, 0x04);
634
635 LR(0x20); /* saturation #1 */
636 LR(0x22); /* saturation #2 */
637 LR(0x93); /* whoops */
638 LR(0x20); /* oh, saturation #1 again */
639 LR(0x22); /* oh, saturation #2 again */
640 LR(0x25); /* hue */
641 LRP(0x0E);
642 LRP(0x1E);
643 LRP(0x0E); /* problems with memory? */
644 LRP(0x1E); /* yes, matrox must have problems in memory area... */
645
646 /* load gamma correction stuff */
647 LR(0x83);
648 LR(0x84);
649 LR(0x85);
650 LR(0x86);
651 LR(0x87);
652 LR(0x88);
653 LR(0x89);
654 LR(0x8A);
655 LR(0x8B);
656
657 val = maven_get_reg(c, 0x8D);
658 val &= 0x14; /* 0x10 or anything ored with it */
659 maven_set_reg(c, 0x8D, val);
660
661 LR(0x33);
662 LR(0x19);
663 LR(0x12);
664 LR(0x3B);
665 LR(0x13);
666 LR(0x39);
667 LR(0x1D);
668 LR(0x3A);
669 LR(0x24);
670 LR(0x14);
671 LR(0x15);
672 LR(0x16);
673 LRP(0x2D);
674 LRP(0x2F);
675 LR(0x1A);
676 LR(0x1B);
677 LR(0x1C);
678 LR(0x23);
679 LR(0x26);
680 LR(0x28);
681 LR(0x27);
682 LR(0x21);
683 LRP(0x2A);
684 if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
685 maven_set_reg(c, 0x35, 0x1D);
686 else
687 maven_set_reg(c, 0x35, 0x1C);
688 LRP(0x3C);
689 LR(0x37);
690 LR(0x38);
691
692 maven_get_reg(c, 0xB0);
693 LR(0xB0); /* output mode */
694 LR(0x90);
695 LR(0xBE);
696 LR(0xC2);
697
698 LRP(0x9A);
699 LRP(0xA2);
700 LRP(0x9E);
701 LRP(0xA6);
702 LRP(0xAA);
703 LRP(0xAC);
704 maven_set_reg(c, 0x3E, 0x00);
705 maven_set_reg(c, 0x95, 0x20);
706 }
707
708 static int maven_find_exact_clocks(unsigned int ht, unsigned int vt,
709 struct mavenregs* m) {
710 unsigned int x;
711 unsigned int err = ~0;
712
713 /* 1:1 */
714 m->regs[0x80] = 0x0F;
715 m->regs[0x81] = 0x07;
716 m->regs[0x82] = 0x81;
717
718 for (x = 0; x < 8; x++) {
719 unsigned int c;
720 unsigned int uninitialized_var(a), uninitialized_var(b),
721 uninitialized_var(h2);
722 unsigned int h = ht + 2 + x;
723
724 if (!matroxfb_mavenclock((m->mode == MATROXFB_OUTPUT_MODE_PAL) ? &maven_PAL : &maven_NTSC, h, vt, &a, &b, &c, &h2)) {
725 unsigned int diff = h - h2;
726
727 if (diff < err) {
728 err = diff;
729 m->regs[0x80] = a - 1;
730 m->regs[0x81] = b - 1;
731 m->regs[0x82] = c | 0x80;
732 m->hcorr = h2 - 2;
733 m->htotal = h - 2;
734 }
735 }
736 }
737 return err != ~0U;
738 }
739
740 static inline int maven_compute_timming(struct maven_data* md,
741 struct my_timming* mt,
742 struct mavenregs* m) {
743 unsigned int tmpi;
744 unsigned int a, bv, c;
745 struct matrox_fb_info *minfo = md->primary_head;
746
747 m->mode = minfo->outputs[1].mode;
748 if (m->mode != MATROXFB_OUTPUT_MODE_MONITOR) {
749 unsigned int lmargin;
750 unsigned int umargin;
751 unsigned int vslen;
752 unsigned int hcrt;
753 unsigned int slen;
754
755 maven_init_TVdata(md, m);
756
757 if (maven_find_exact_clocks(mt->HTotal, mt->VTotal, m) == 0)
758 return -EINVAL;
759
760 lmargin = mt->HTotal - mt->HSyncEnd;
761 slen = mt->HSyncEnd - mt->HSyncStart;
762 hcrt = mt->HTotal - slen - mt->delay;
763 umargin = mt->VTotal - mt->VSyncEnd;
764 vslen = mt->VSyncEnd - mt->VSyncStart;
765
766 if (m->hcorr < mt->HTotal)
767 hcrt += m->hcorr;
768 if (hcrt > mt->HTotal)
769 hcrt -= mt->HTotal;
770 if (hcrt + 2 > mt->HTotal)
771 hcrt = 0; /* or issue warning? */
772
773 /* last (first? middle?) line in picture can have different length */
774 /* hlen - 2 */
775 m->regs[0x96] = m->hcorr;
776 m->regs[0x97] = m->hcorr >> 8;
777 /* ... */
778 m->regs[0x98] = 0x00; m->regs[0x99] = 0x00;
779 /* hblanking end */
780 m->regs[0x9A] = lmargin; /* 100% */
781 m->regs[0x9B] = lmargin >> 8; /* 100% */
782 /* who knows */
783 m->regs[0x9C] = 0x04;
784 m->regs[0x9D] = 0x00;
785 /* htotal - 2 */
786 m->regs[0xA0] = m->htotal;
787 m->regs[0xA1] = m->htotal >> 8;
788 /* vblanking end */
789 m->regs[0xA2] = mt->VTotal - mt->VSyncStart - 1; /* stop vblanking */
790 m->regs[0xA3] = (mt->VTotal - mt->VSyncStart - 1) >> 8;
791 /* something end... [A6]+1..[A8] */
792 if (md->version == MGATVO_B) {
793 m->regs[0xA4] = 0x04;
794 m->regs[0xA5] = 0x00;
795 } else {
796 m->regs[0xA4] = 0x01;
797 m->regs[0xA5] = 0x00;
798 }
799 /* something start... 0..[A4]-1 */
800 m->regs[0xA6] = 0x00;
801 m->regs[0xA7] = 0x00;
802 /* vertical line count - 1 */
803 m->regs[0xA8] = mt->VTotal - 1;
804 m->regs[0xA9] = (mt->VTotal - 1) >> 8;
805 /* horizontal vidrst pos */
806 m->regs[0xAA] = hcrt; /* 0 <= hcrt <= htotal - 2 */
807 m->regs[0xAB] = hcrt >> 8;
808 /* vertical vidrst pos */
809 m->regs[0xAC] = mt->VTotal - 2;
810 m->regs[0xAD] = (mt->VTotal - 2) >> 8;
811 /* moves picture up/down and so on... */
812 m->regs[0xAE] = 0x01; /* Fix this... 0..VTotal */
813 m->regs[0xAF] = 0x00;
814 {
815 int hdec;
816 int hlen;
817 unsigned int ibmin = 4 + lmargin + mt->HDisplay;
818 unsigned int ib;
819 int i;
820
821 /* Verify! */
822 /* Where 94208 came from? */
823 if (mt->HTotal)
824 hdec = 94208 / (mt->HTotal);
825 else
826 hdec = 0x81;
827 if (hdec > 0x81)
828 hdec = 0x81;
829 if (hdec < 0x41)
830 hdec = 0x41;
831 hdec--;
832 hlen = 98304 - 128 - ((lmargin + mt->HDisplay - 8) * hdec);
833 if (hlen < 0)
834 hlen = 0;
835 hlen = hlen >> 8;
836 if (hlen > 0xFF)
837 hlen = 0xFF;
838 /* Now we have to compute input buffer length.
839 If you want any picture, it must be between
840 4 + lmargin + xres
841 and
842 94208 / hdec
843 If you want perfect picture even on the top
844 of screen, it must be also
845 0x3C0000 * i / hdec + Q - R / hdec
846 where
847 R Qmin Qmax
848 0x07000 0x5AE 0x5BF
849 0x08000 0x5CF 0x5FF
850 0x0C000 0x653 0x67F
851 0x10000 0x6F8 0x6FF
852 */
853 i = 1;
854 do {
855 ib = ((0x3C0000 * i - 0x8000)/ hdec + 0x05E7) >> 8;
856 i++;
857 } while (ib < ibmin);
858 if (ib >= m->htotal + 2) {
859 ib = ibmin;
860 }
861
862 m->regs[0x90] = hdec; /* < 0x40 || > 0x80 is bad... 0x80 is questionable */
863 m->regs[0xC2] = hlen;
864 /* 'valid' input line length */
865 m->regs[0x9E] = ib;
866 m->regs[0x9F] = ib >> 8;
867 }
868 {
869 int vdec;
870 int vlen;
871
872 #define MATROX_USE64BIT_DIVIDE
873 if (mt->VTotal) {
874 #ifdef MATROX_USE64BIT_DIVIDE
875 u64 f1;
876 u32 a;
877 u32 b;
878
879 a = m->vlines * (m->htotal + 2);
880 b = (mt->VTotal - 1) * (m->htotal + 2) + m->hcorr + 2;
881
882 f1 = ((u64)a) << 15; /* *32768 */
883 do_div(f1, b);
884 vdec = f1;
885 #else
886 vdec = m->vlines * 32768 / mt->VTotal;
887 #endif
888 } else
889 vdec = 0x8000;
890 if (vdec > 0x8000)
891 vdec = 0x8000;
892 vlen = (vslen + umargin + mt->VDisplay) * vdec;
893 vlen = (vlen >> 16) - 146; /* FIXME: 146?! */
894 if (vlen < 0)
895 vlen = 0;
896 if (vlen > 0xFF)
897 vlen = 0xFF;
898 vdec--;
899 m->regs[0x91] = vdec;
900 m->regs[0x92] = vdec >> 8;
901 m->regs[0xBE] = vlen;
902 }
903 m->regs[0xB0] = 0x08; /* output: SVideo/Composite */
904 return 0;
905 }
906
907 DAC1064_calcclock(mt->pixclock, 450000, &a, &bv, &c);
908 m->regs[0x80] = a;
909 m->regs[0x81] = bv;
910 m->regs[0x82] = c | 0x80;
911
912 m->regs[0xB3] = 0x01;
913 m->regs[0x94] = 0xB2;
914
915 /* htotal... */
916 m->regs[0x96] = mt->HTotal;
917 m->regs[0x97] = mt->HTotal >> 8;
918 /* ?? */
919 m->regs[0x98] = 0x00;
920 m->regs[0x99] = 0x00;
921 /* hsync len */
922 tmpi = mt->HSyncEnd - mt->HSyncStart;
923 m->regs[0x9A] = tmpi;
924 m->regs[0x9B] = tmpi >> 8;
925 /* hblank end */
926 tmpi = mt->HTotal - mt->HSyncStart;
927 m->regs[0x9C] = tmpi;
928 m->regs[0x9D] = tmpi >> 8;
929 /* hblank start */
930 tmpi += mt->HDisplay;
931 m->regs[0x9E] = tmpi;
932 m->regs[0x9F] = tmpi >> 8;
933 /* htotal + 1 */
934 tmpi = mt->HTotal + 1;
935 m->regs[0xA0] = tmpi;
936 m->regs[0xA1] = tmpi >> 8;
937 /* vsync?! */
938 tmpi = mt->VSyncEnd - mt->VSyncStart - 1;
939 m->regs[0xA2] = tmpi;
940 m->regs[0xA3] = tmpi >> 8;
941 /* ignored? */
942 tmpi = mt->VTotal - mt->VSyncStart;
943 m->regs[0xA4] = tmpi;
944 m->regs[0xA5] = tmpi >> 8;
945 /* ignored? */
946 tmpi = mt->VTotal - 1;
947 m->regs[0xA6] = tmpi;
948 m->regs[0xA7] = tmpi >> 8;
949 /* vtotal - 1 */
950 m->regs[0xA8] = tmpi;
951 m->regs[0xA9] = tmpi >> 8;
952 /* hor vidrst */
953 tmpi = mt->HTotal - mt->delay;
954 m->regs[0xAA] = tmpi;
955 m->regs[0xAB] = tmpi >> 8;
956 /* vert vidrst */
957 tmpi = mt->VTotal - 2;
958 m->regs[0xAC] = tmpi;
959 m->regs[0xAD] = tmpi >> 8;
960 /* ignored? */
961 m->regs[0xAE] = 0x00;
962 m->regs[0xAF] = 0x00;
963
964 m->regs[0xB0] = 0x03; /* output: monitor */
965 m->regs[0xB1] = 0xA0; /* ??? */
966 m->regs[0x8C] = 0x20; /* must be set... */
967 m->regs[0x8D] = 0x04; /* defaults to 0x10: test signal */
968 m->regs[0xB9] = 0x1A; /* defaults to 0x2C: too bright */
969 m->regs[0xBF] = 0x22; /* makes picture stable */
970
971 return 0;
972 }
973
974 static int maven_program_timming(struct maven_data* md,
975 const struct mavenregs* m) {
976 struct i2c_client *c = md->client;
977
978 if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) {
979 LR(0x80);
980 LR(0x81);
981 LR(0x82);
982
983 LR(0xB3);
984 LR(0x94);
985
986 LRP(0x96);
987 LRP(0x98);
988 LRP(0x9A);
989 LRP(0x9C);
990 LRP(0x9E);
991 LRP(0xA0);
992 LRP(0xA2);
993 LRP(0xA4);
994 LRP(0xA6);
995 LRP(0xA8);
996 LRP(0xAA);
997 LRP(0xAC);
998 LRP(0xAE);
999
1000 LR(0xB0); /* output: monitor */
1001 LR(0xB1); /* ??? */
1002 LR(0x8C); /* must be set... */
1003 LR(0x8D); /* defaults to 0x10: test signal */
1004 LR(0xB9); /* defaults to 0x2C: too bright */
1005 LR(0xBF); /* makes picture stable */
1006 } else {
1007 maven_init_TV(c, m);
1008 }
1009 return 0;
1010 }
1011
1012 static inline int maven_resync(struct maven_data* md) {
1013 struct i2c_client *c = md->client;
1014 maven_set_reg(c, 0x95, 0x20); /* start whole thing */
1015 return 0;
1016 }
1017
1018 static int maven_get_queryctrl (struct maven_data* md,
1019 struct v4l2_queryctrl *p) {
1020 int i;
1021
1022 i = get_ctrl_id(p->id);
1023 if (i >= 0) {
1024 *p = maven_controls[i].desc;
1025 return 0;
1026 }
1027 if (i == -ENOENT) {
1028 static const struct v4l2_queryctrl disctrl =
1029 { .flags = V4L2_CTRL_FLAG_DISABLED };
1030
1031 i = p->id;
1032 *p = disctrl;
1033 p->id = i;
1034 sprintf(p->name, "Ctrl #%08X", i);
1035 return 0;
1036 }
1037 return -EINVAL;
1038 }
1039
1040 static int maven_set_control (struct maven_data* md,
1041 struct v4l2_control *p) {
1042 int i;
1043
1044 i = get_ctrl_id(p->id);
1045 if (i < 0) return -EINVAL;
1046
1047 /*
1048 * Check if changed.
1049 */
1050 if (p->value == *get_ctrl_ptr(md, i)) return 0;
1051
1052 /*
1053 * Check limits.
1054 */
1055 if (p->value > maven_controls[i].desc.maximum) return -EINVAL;
1056 if (p->value < maven_controls[i].desc.minimum) return -EINVAL;
1057
1058 /*
1059 * Store new value.
1060 */
1061 *get_ctrl_ptr(md, i) = p->value;
1062
1063 switch (p->id) {
1064 case V4L2_CID_BRIGHTNESS:
1065 case V4L2_CID_CONTRAST:
1066 {
1067 int blacklevel, whitelevel;
1068 maven_compute_bwlevel(md, &blacklevel, &whitelevel);
1069 blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8);
1070 whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8);
1071 maven_set_reg_pair(md->client, 0x0e, blacklevel);
1072 maven_set_reg_pair(md->client, 0x1e, whitelevel);
1073 }
1074 break;
1075 case V4L2_CID_SATURATION:
1076 {
1077 maven_set_reg(md->client, 0x20, p->value);
1078 maven_set_reg(md->client, 0x22, p->value);
1079 }
1080 break;
1081 case V4L2_CID_HUE:
1082 {
1083 maven_set_reg(md->client, 0x25, p->value);
1084 }
1085 break;
1086 case V4L2_CID_GAMMA:
1087 {
1088 const struct maven_gamma* g;
1089 g = maven_compute_gamma(md);
1090 maven_set_reg(md->client, 0x83, g->reg83);
1091 maven_set_reg(md->client, 0x84, g->reg84);
1092 maven_set_reg(md->client, 0x85, g->reg85);
1093 maven_set_reg(md->client, 0x86, g->reg86);
1094 maven_set_reg(md->client, 0x87, g->reg87);
1095 maven_set_reg(md->client, 0x88, g->reg88);
1096 maven_set_reg(md->client, 0x89, g->reg89);
1097 maven_set_reg(md->client, 0x8a, g->reg8a);
1098 maven_set_reg(md->client, 0x8b, g->reg8b);
1099 }
1100 break;
1101 case MATROXFB_CID_TESTOUT:
1102 {
1103 unsigned char val
1104 = maven_get_reg(md->client, 0x8d);
1105 if (p->value) val |= 0x10;
1106 else val &= ~0x10;
1107 maven_set_reg(md->client, 0x8d, val);
1108 }
1109 break;
1110 case MATROXFB_CID_DEFLICKER:
1111 {
1112 maven_set_reg(md->client, 0x93, maven_compute_deflicker(md));
1113 }
1114 break;
1115 }
1116
1117
1118 return 0;
1119 }
1120
1121 static int maven_get_control (struct maven_data* md,
1122 struct v4l2_control *p) {
1123 int i;
1124
1125 i = get_ctrl_id(p->id);
1126 if (i < 0) return -EINVAL;
1127 p->value = *get_ctrl_ptr(md, i);
1128 return 0;
1129 }
1130
1131 /******************************************************/
1132
1133 static int maven_out_compute(void* md, struct my_timming* mt) {
1134 #define mdinfo ((struct maven_data*)md)
1135 #define minfo (mdinfo->primary_head)
1136 return maven_compute_timming(md, mt, &minfo->hw.maven);
1137 #undef minfo
1138 #undef mdinfo
1139 }
1140
1141 static int maven_out_program(void* md) {
1142 #define mdinfo ((struct maven_data*)md)
1143 #define minfo (mdinfo->primary_head)
1144 return maven_program_timming(md, &minfo->hw.maven);
1145 #undef minfo
1146 #undef mdinfo
1147 }
1148
1149 static int maven_out_start(void* md) {
1150 return maven_resync(md);
1151 }
1152
1153 static int maven_out_verify_mode(void* md, u_int32_t arg) {
1154 switch (arg) {
1155 case MATROXFB_OUTPUT_MODE_PAL:
1156 case MATROXFB_OUTPUT_MODE_NTSC:
1157 case MATROXFB_OUTPUT_MODE_MONITOR:
1158 return 0;
1159 }
1160 return -EINVAL;
1161 }
1162
1163 static int maven_out_get_queryctrl(void* md, struct v4l2_queryctrl* p) {
1164 return maven_get_queryctrl(md, p);
1165 }
1166
1167 static int maven_out_get_ctrl(void* md, struct v4l2_control* p) {
1168 return maven_get_control(md, p);
1169 }
1170
1171 static int maven_out_set_ctrl(void* md, struct v4l2_control* p) {
1172 return maven_set_control(md, p);
1173 }
1174
1175 static struct matrox_altout maven_altout = {
1176 .name = "Secondary output",
1177 .compute = maven_out_compute,
1178 .program = maven_out_program,
1179 .start = maven_out_start,
1180 .verifymode = maven_out_verify_mode,
1181 .getqueryctrl = maven_out_get_queryctrl,
1182 .getctrl = maven_out_get_ctrl,
1183 .setctrl = maven_out_set_ctrl,
1184 };
1185
1186 static int maven_init_client(struct i2c_client* clnt) {
1187 struct maven_data* md = i2c_get_clientdata(clnt);
1188 struct matrox_fb_info *minfo = container_of(clnt->adapter,
1189 struct i2c_bit_adapter,
1190 adapter)->minfo;
1191
1192 md->primary_head = minfo;
1193 md->client = clnt;
1194 down_write(&minfo->altout.lock);
1195 minfo->outputs[1].output = &maven_altout;
1196 minfo->outputs[1].src = minfo->outputs[1].default_src;
1197 minfo->outputs[1].data = md;
1198 minfo->outputs[1].mode = MATROXFB_OUTPUT_MODE_MONITOR;
1199 up_write(&minfo->altout.lock);
1200 if (maven_get_reg(clnt, 0xB2) < 0x14) {
1201 md->version = MGATVO_B;
1202 /* Tweak some things for this old chip */
1203 } else {
1204 md->version = MGATVO_C;
1205 }
1206 /*
1207 * Set all parameters to its initial values.
1208 */
1209 {
1210 unsigned int i;
1211
1212 for (i = 0; i < MAVCTRLS; ++i) {
1213 *get_ctrl_ptr(md, i) = maven_controls[i].desc.default_value;
1214 }
1215 }
1216
1217 return 0;
1218 }
1219
1220 static int maven_shutdown_client(struct i2c_client* clnt) {
1221 struct maven_data* md = i2c_get_clientdata(clnt);
1222
1223 if (md->primary_head) {
1224 struct matrox_fb_info *minfo = md->primary_head;
1225
1226 down_write(&minfo->altout.lock);
1227 minfo->outputs[1].src = MATROXFB_SRC_NONE;
1228 minfo->outputs[1].output = NULL;
1229 minfo->outputs[1].data = NULL;
1230 minfo->outputs[1].mode = MATROXFB_OUTPUT_MODE_MONITOR;
1231 up_write(&minfo->altout.lock);
1232 md->primary_head = NULL;
1233 }
1234 return 0;
1235 }
1236
1237 static int maven_probe(struct i2c_client *client,
1238 const struct i2c_device_id *id)
1239 {
1240 struct i2c_adapter *adapter = client->adapter;
1241 int err = -ENODEV;
1242 struct maven_data* data;
1243
1244 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_WORD_DATA |
1245 I2C_FUNC_SMBUS_BYTE_DATA |
1246 I2C_FUNC_PROTOCOL_MANGLING))
1247 goto ERROR0;
1248 if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
1249 err = -ENOMEM;
1250 goto ERROR0;
1251 }
1252 i2c_set_clientdata(client, data);
1253 err = maven_init_client(client);
1254 if (err)
1255 goto ERROR4;
1256 return 0;
1257 ERROR4:;
1258 kfree(data);
1259 ERROR0:;
1260 return err;
1261 }
1262
1263 static int maven_remove(struct i2c_client *client)
1264 {
1265 maven_shutdown_client(client);
1266 kfree(i2c_get_clientdata(client));
1267 return 0;
1268 }
1269
1270 static const struct i2c_device_id maven_id[] = {
1271 { "maven", 0 },
1272 { }
1273 };
1274 MODULE_DEVICE_TABLE(i2c, maven_id);
1275
1276 static struct i2c_driver maven_driver={
1277 .driver = {
1278 .name = "maven",
1279 },
1280 .probe = maven_probe,
1281 .remove = maven_remove,
1282 .id_table = maven_id,
1283 };
1284
1285 static int __init matroxfb_maven_init(void)
1286 {
1287 return i2c_add_driver(&maven_driver);
1288 }
1289
1290 static void __exit matroxfb_maven_exit(void)
1291 {
1292 i2c_del_driver(&maven_driver);
1293 }
1294
1295 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
1296 MODULE_DESCRIPTION("Matrox G200/G400 Matrox MGA-TVO driver");
1297 MODULE_LICENSE("GPL");
1298 module_init(matroxfb_maven_init);
1299 module_exit(matroxfb_maven_exit);
1300 /* we do not have __setup() yet */