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8#include <linux/delay.h>
9#include <linux/i2c.h>
10#include <linux/slab.h>
11#include <linux/videodev2.h>
12#include "tuner-i2c.h"
13#include "mt20xx.h"
14
15static int debug;
16module_param(debug, int, 0644);
17MODULE_PARM_DESC(debug, "enable verbose debug messages");
18
19
20
21static unsigned int optimize_vco = 1;
22module_param(optimize_vco, int, 0644);
23
24static unsigned int tv_antenna = 1;
25module_param(tv_antenna, int, 0644);
26
27static unsigned int radio_antenna;
28module_param(radio_antenna, int, 0644);
29
30
31
32#define MT2032 0x04
33#define MT2030 0x06
34#define MT2040 0x07
35#define MT2050 0x42
36
37static char *microtune_part[] = {
38 [ MT2030 ] = "MT2030",
39 [ MT2032 ] = "MT2032",
40 [ MT2040 ] = "MT2040",
41 [ MT2050 ] = "MT2050",
42};
43
44struct microtune_priv {
45 struct tuner_i2c_props i2c_props;
46
47 unsigned int xogc;
48
49
50 u32 frequency;
51};
52
53static void microtune_release(struct dvb_frontend *fe)
54{
55 kfree(fe->tuner_priv);
56 fe->tuner_priv = NULL;
57}
58
59static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency)
60{
61 struct microtune_priv *priv = fe->tuner_priv;
62 *frequency = priv->frequency;
63 return 0;
64}
65
66
67static int mt2032_spurcheck(struct dvb_frontend *fe,
68 int f1, int f2, int spectrum_from,int spectrum_to)
69{
70 struct microtune_priv *priv = fe->tuner_priv;
71 int n1=1,n2,f;
72
73 f1=f1/1000;
74 f2=f2/1000;
75 spectrum_from/=1000;
76 spectrum_to/=1000;
77
78 tuner_dbg("spurcheck f1=%d f2=%d from=%d to=%d\n",
79 f1,f2,spectrum_from,spectrum_to);
80
81 do {
82 n2=-n1;
83 f=n1*(f1-f2);
84 do {
85 n2--;
86 f=f-f2;
87 tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f);
88
89 if( (f>spectrum_from) && (f<spectrum_to))
90 tuner_dbg("mt2032 spurcheck triggered: %d\n",n1);
91 } while ( (f>(f2-spectrum_to)) || (n2>-5));
92 n1++;
93 } while (n1<5);
94
95 return 1;
96}
97
98static int mt2032_compute_freq(struct dvb_frontend *fe,
99 unsigned int rfin,
100 unsigned int if1, unsigned int if2,
101 unsigned int spectrum_from,
102 unsigned int spectrum_to,
103 unsigned char *buf,
104 int *ret_sel,
105 unsigned int xogc)
106{
107 struct microtune_priv *priv = fe->tuner_priv;
108 unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1,
109 desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq;
110
111 fref= 5250 *1000;
112 desired_lo1=rfin+if1;
113
114 lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000);
115 lo1n=lo1/8;
116 lo1a=lo1-(lo1n*8);
117
118 s=rfin/1000/1000+1090;
119
120 if(optimize_vco) {
121 if(s>1890) sel=0;
122 else if(s>1720) sel=1;
123 else if(s>1530) sel=2;
124 else if(s>1370) sel=3;
125 else sel=4;
126 }
127 else {
128 if(s>1790) sel=0;
129 else if(s>1617) sel=1;
130 else if(s>1449) sel=2;
131 else if(s>1291) sel=3;
132 else sel=4;
133 }
134 *ret_sel=sel;
135
136 lo1freq=(lo1a+8*lo1n)*fref;
137
138 tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n",
139 rfin,lo1,lo1n,lo1a,sel,lo1freq);
140
141 desired_lo2=lo1freq-rfin-if2;
142 lo2=(desired_lo2)/fref;
143 lo2n=lo2/8;
144 lo2a=lo2-(lo2n*8);
145 lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000);
146 lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000;
147
148 tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n",
149 rfin,lo2,lo2n,lo2a,lo2num,lo2freq);
150
151 if (lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a > 7 || lo2n < 17 ||
152 lo2n > 30) {
153 tuner_info("mt2032: frequency parameters out of range: %d %d %d %d\n",
154 lo1a, lo1n, lo2a,lo2n);
155 return(-1);
156 }
157
158 mt2032_spurcheck(fe, lo1freq, desired_lo2, spectrum_from, spectrum_to);
159
160
161
162 buf[0]=lo1n-1;
163 buf[1]=lo1a | (sel<<4);
164 buf[2]=0x86;
165 buf[3]=0x0f;
166 buf[4]=0x1f;
167 buf[5]=(lo2n-1) | (lo2a<<5);
168 if(rfin >400*1000*1000)
169 buf[6]=0xe4;
170 else
171 buf[6]=0xf4;
172 buf[7]=8+xogc;
173 buf[8]=0xc3;
174 buf[9]=0x4e;
175 buf[10]=0xec;
176 buf[11]=(lo2num&0xff);
177 buf[12]=(lo2num>>8) |0x80;
178
179 return 0;
180}
181
182static int mt2032_check_lo_lock(struct dvb_frontend *fe)
183{
184 struct microtune_priv *priv = fe->tuner_priv;
185 int try,lock=0;
186 unsigned char buf[2];
187
188 for(try=0;try<10;try++) {
189 buf[0]=0x0e;
190 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
191 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
192 tuner_dbg("mt2032 Reg.E=0x%02x\n",buf[0]);
193 lock=buf[0] &0x06;
194
195 if (lock==6)
196 break;
197
198 tuner_dbg("mt2032: pll wait 1ms for lock (0x%2x)\n",buf[0]);
199 udelay(1000);
200 }
201 return lock;
202}
203
204static int mt2032_optimize_vco(struct dvb_frontend *fe,int sel,int lock)
205{
206 struct microtune_priv *priv = fe->tuner_priv;
207 unsigned char buf[2];
208 int tad1;
209
210 buf[0]=0x0f;
211 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
212 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
213 tuner_dbg("mt2032 Reg.F=0x%02x\n",buf[0]);
214 tad1=buf[0]&0x07;
215
216 if(tad1 ==0) return lock;
217 if(tad1 ==1) return lock;
218
219 if(tad1==2) {
220 if(sel==0)
221 return lock;
222 else sel--;
223 }
224 else {
225 if(sel<4)
226 sel++;
227 else
228 return lock;
229 }
230
231 tuner_dbg("mt2032 optimize_vco: sel=%d\n",sel);
232
233 buf[0]=0x0f;
234 buf[1]=sel;
235 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
236 lock=mt2032_check_lo_lock(fe);
237 return lock;
238}
239
240
241static void mt2032_set_if_freq(struct dvb_frontend *fe, unsigned int rfin,
242 unsigned int if1, unsigned int if2,
243 unsigned int from, unsigned int to)
244{
245 unsigned char buf[21];
246 int lint_try,ret,sel,lock=0;
247 struct microtune_priv *priv = fe->tuner_priv;
248
249 tuner_dbg("mt2032_set_if_freq rfin=%d if1=%d if2=%d from=%d to=%d\n",
250 rfin,if1,if2,from,to);
251
252 buf[0]=0;
253 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
254 tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
255
256 buf[0]=0;
257 ret=mt2032_compute_freq(fe,rfin,if1,if2,from,to,&buf[1],&sel,priv->xogc);
258 if (ret<0)
259 return;
260
261
262 buf[0]=0;
263 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,4);
264 buf[5]=5;
265 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,4);
266 buf[11]=11;
267 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+11,3);
268 if(ret!=3)
269 tuner_warn("i2c i/o error: rc == %d (should be 3)\n",ret);
270
271
272 for(lint_try=0; lint_try<2; lint_try++) {
273 lock=mt2032_check_lo_lock(fe);
274
275 if(optimize_vco)
276 lock=mt2032_optimize_vco(fe,sel,lock);
277 if(lock==6) break;
278
279 tuner_dbg("mt2032: re-init PLLs by LINT\n");
280 buf[0]=7;
281 buf[1]=0x80 +8+priv->xogc;
282 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
283 mdelay(10);
284 buf[1]=8+priv->xogc;
285 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
286 }
287
288 if (lock!=6)
289 tuner_warn("MT2032 Fatal Error: PLLs didn't lock.\n");
290
291 buf[0]=2;
292 buf[1]=0x20;
293 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
294 if (ret!=2)
295 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
296}
297
298
299static int mt2032_set_tv_freq(struct dvb_frontend *fe,
300 struct analog_parameters *params)
301{
302 int if2,from,to;
303
304
305 if (params->std & V4L2_STD_525_60) {
306
307 from = 40750*1000;
308 to = 46750*1000;
309 if2 = 45750*1000;
310 } else {
311
312 from = 32900*1000;
313 to = 39900*1000;
314 if2 = 38900*1000;
315 }
316
317 mt2032_set_if_freq(fe, params->frequency*62500,
318 1090*1000*1000, if2, from, to);
319
320 return 0;
321}
322
323static int mt2032_set_radio_freq(struct dvb_frontend *fe,
324 struct analog_parameters *params)
325{
326 struct microtune_priv *priv = fe->tuner_priv;
327 int if2;
328
329 if (params->std & V4L2_STD_525_60) {
330 tuner_dbg("pinnacle ntsc\n");
331 if2 = 41300 * 1000;
332 } else {
333 tuner_dbg("pinnacle pal\n");
334 if2 = 33300 * 1000;
335 }
336
337
338 mt2032_set_if_freq(fe, params->frequency * 125 / 2,
339 1085*1000*1000,if2,if2,if2);
340
341 return 0;
342}
343
344static int mt2032_set_params(struct dvb_frontend *fe,
345 struct analog_parameters *params)
346{
347 struct microtune_priv *priv = fe->tuner_priv;
348 int ret = -EINVAL;
349
350 switch (params->mode) {
351 case V4L2_TUNER_RADIO:
352 ret = mt2032_set_radio_freq(fe, params);
353 priv->frequency = params->frequency * 125 / 2;
354 break;
355 case V4L2_TUNER_ANALOG_TV:
356 case V4L2_TUNER_DIGITAL_TV:
357 ret = mt2032_set_tv_freq(fe, params);
358 priv->frequency = params->frequency * 62500;
359 break;
360 }
361
362 return ret;
363}
364
365static const struct dvb_tuner_ops mt2032_tuner_ops = {
366 .set_analog_params = mt2032_set_params,
367 .release = microtune_release,
368 .get_frequency = microtune_get_frequency,
369};
370
371
372static int mt2032_init(struct dvb_frontend *fe)
373{
374 struct microtune_priv *priv = fe->tuner_priv;
375 unsigned char buf[21];
376 int ret,xogc,xok=0;
377
378
379 buf[1]=2;
380 buf[2]=0xff;
381 buf[3]=0x0f;
382 buf[4]=0x1f;
383 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+1,4);
384
385 buf[5]=6;
386 buf[6]=0xe4;
387 buf[7]=0x8f;
388 buf[8]=0xc3;
389 buf[9]=0x4e;
390 buf[10]=0xec;
391 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,6);
392
393 buf[12]=13;
394 buf[13]=0x32;
395 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2);
396
397
398 xogc=7;
399 do {
400 tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
401 mdelay(10);
402 buf[0]=0x0e;
403 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
404 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
405 xok=buf[0]&0x01;
406 tuner_dbg("mt2032: xok = 0x%02x\n",xok);
407 if (xok == 1) break;
408
409 xogc--;
410 tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
411 if (xogc == 3) {
412 xogc=4;
413 break;
414 }
415 buf[0]=0x07;
416 buf[1]=0x88 + xogc;
417 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
418 if (ret!=2)
419 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
420 } while (xok != 1 );
421 priv->xogc=xogc;
422
423 memcpy(&fe->ops.tuner_ops, &mt2032_tuner_ops, sizeof(struct dvb_tuner_ops));
424
425 return(1);
426}
427
428static void mt2050_set_antenna(struct dvb_frontend *fe, unsigned char antenna)
429{
430 struct microtune_priv *priv = fe->tuner_priv;
431 unsigned char buf[2];
432
433 buf[0] = 6;
434 buf[1] = antenna ? 0x11 : 0x10;
435 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
436 tuner_dbg("mt2050: enabled antenna connector %d\n", antenna);
437}
438
439static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2)
440{
441 struct microtune_priv *priv = fe->tuner_priv;
442 unsigned int if1=1218*1000*1000;
443 unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b;
444 int ret;
445 unsigned char buf[6];
446
447 tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n",
448 freq,if1,if2);
449
450 f_lo1=freq+if1;
451 f_lo1=(f_lo1/1000000)*1000000;
452
453 f_lo2=f_lo1-freq-if2;
454 f_lo2=(f_lo2/50000)*50000;
455
456 lo1=f_lo1/4000000;
457 lo2=f_lo2/4000000;
458
459 f_lo1_modulo= f_lo1-(lo1*4000000);
460 f_lo2_modulo= f_lo2-(lo2*4000000);
461
462 num1=4*f_lo1_modulo/4000000;
463 num2=4096*(f_lo2_modulo/1000)/4000;
464
465
466
467 div1a=(lo1/12)-1;
468 div1b=lo1-(div1a+1)*12;
469
470 div2a=(lo2/8)-1;
471 div2b=lo2-(div2a+1)*8;
472
473 if (debug > 1) {
474 tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2);
475 tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n",
476 num1,num2,div1a,div1b,div2a,div2b);
477 }
478
479 buf[0]=1;
480 buf[1]= 4*div1b + num1;
481 if(freq<275*1000*1000) buf[1] = buf[1]|0x80;
482
483 buf[2]=div1a;
484 buf[3]=32*div2b + num2/256;
485 buf[4]=num2-(num2/256)*256;
486 buf[5]=div2a;
487 if(num2!=0) buf[5]=buf[5]|0x40;
488
489 if (debug > 1)
490 tuner_dbg("bufs is: %*ph\n", 6, buf);
491
492 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6);
493 if (ret!=6)
494 tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret);
495}
496
497static int mt2050_set_tv_freq(struct dvb_frontend *fe,
498 struct analog_parameters *params)
499{
500 unsigned int if2;
501
502 if (params->std & V4L2_STD_525_60) {
503
504 if2 = 45750*1000;
505 } else {
506
507 if2 = 38900*1000;
508 }
509 if (V4L2_TUNER_DIGITAL_TV == params->mode) {
510
511 if2 = 36150*1000;
512 }
513 mt2050_set_if_freq(fe, params->frequency*62500, if2);
514 mt2050_set_antenna(fe, tv_antenna);
515
516 return 0;
517}
518
519static int mt2050_set_radio_freq(struct dvb_frontend *fe,
520 struct analog_parameters *params)
521{
522 struct microtune_priv *priv = fe->tuner_priv;
523 int if2;
524
525 if (params->std & V4L2_STD_525_60) {
526 tuner_dbg("pinnacle ntsc\n");
527 if2 = 41300 * 1000;
528 } else {
529 tuner_dbg("pinnacle pal\n");
530 if2 = 33300 * 1000;
531 }
532
533 mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2);
534 mt2050_set_antenna(fe, radio_antenna);
535
536 return 0;
537}
538
539static int mt2050_set_params(struct dvb_frontend *fe,
540 struct analog_parameters *params)
541{
542 struct microtune_priv *priv = fe->tuner_priv;
543 int ret = -EINVAL;
544
545 switch (params->mode) {
546 case V4L2_TUNER_RADIO:
547 ret = mt2050_set_radio_freq(fe, params);
548 priv->frequency = params->frequency * 125 / 2;
549 break;
550 case V4L2_TUNER_ANALOG_TV:
551 case V4L2_TUNER_DIGITAL_TV:
552 ret = mt2050_set_tv_freq(fe, params);
553 priv->frequency = params->frequency * 62500;
554 break;
555 }
556
557 return ret;
558}
559
560static const struct dvb_tuner_ops mt2050_tuner_ops = {
561 .set_analog_params = mt2050_set_params,
562 .release = microtune_release,
563 .get_frequency = microtune_get_frequency,
564};
565
566static int mt2050_init(struct dvb_frontend *fe)
567{
568 struct microtune_priv *priv = fe->tuner_priv;
569 unsigned char buf[2];
570
571 buf[0] = 6;
572 buf[1] = 0x10;
573 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
574
575 buf[0] = 0x0f;
576 buf[1] = 0x0f;
577 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
578
579 buf[0] = 0x0d;
580 tuner_i2c_xfer_send(&priv->i2c_props, buf, 1);
581 tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1);
582
583 tuner_dbg("mt2050: sro is %x\n", buf[0]);
584
585 memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops));
586
587 return 0;
588}
589
590struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
591 struct i2c_adapter* i2c_adap,
592 u8 i2c_addr)
593{
594 struct microtune_priv *priv = NULL;
595 char *name;
596 unsigned char buf[21];
597 int company_code;
598
599 priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL);
600 if (priv == NULL)
601 return NULL;
602 fe->tuner_priv = priv;
603
604 priv->i2c_props.addr = i2c_addr;
605 priv->i2c_props.adap = i2c_adap;
606 priv->i2c_props.name = "mt20xx";
607
608
609
610 memset(buf,0,sizeof(buf));
611
612 name = "unknown";
613
614 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
615 tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
616 if (debug)
617 tuner_dbg("MT20xx hexdump: %*ph\n", 21, buf);
618
619 company_code = buf[0x11] << 8 | buf[0x12];
620 tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n",
621 company_code,buf[0x13],buf[0x14]);
622
623
624 if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
625 NULL != microtune_part[buf[0x13]])
626 name = microtune_part[buf[0x13]];
627 switch (buf[0x13]) {
628 case MT2032:
629 mt2032_init(fe);
630 break;
631 case MT2050:
632 mt2050_init(fe);
633 break;
634 default:
635 tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
636 name);
637 return NULL;
638 }
639
640 strscpy(fe->ops.tuner_ops.info.name, name,
641 sizeof(fe->ops.tuner_ops.info.name));
642 tuner_info("microtune %s found, OK\n",name);
643 return fe;
644}
645
646EXPORT_SYMBOL_GPL(microtune_attach);
647
648MODULE_DESCRIPTION("Microtune tuner driver");
649MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
650MODULE_LICENSE("GPL");
651
