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7#include <linux/delay.h>
8#include <linux/i2c.h>
9#include <linux/slab.h>
10#include <linux/videodev2.h>
11#include "tuner-i2c.h"
12#include "mt20xx.h"
13
14static int debug;
15module_param(debug, int, 0644);
16MODULE_PARM_DESC(debug, "enable verbose debug messages");
17
18
19
20static unsigned int optimize_vco = 1;
21module_param(optimize_vco, int, 0644);
22
23static unsigned int tv_antenna = 1;
24module_param(tv_antenna, int, 0644);
25
26static unsigned int radio_antenna;
27module_param(radio_antenna, int, 0644);
28
29
30
31#define MT2032 0x04
32#define MT2030 0x06
33#define MT2040 0x07
34#define MT2050 0x42
35
36static char *microtune_part[] = {
37 [ MT2030 ] = "MT2030",
38 [ MT2032 ] = "MT2032",
39 [ MT2040 ] = "MT2040",
40 [ MT2050 ] = "MT2050",
41};
42
43struct microtune_priv {
44 struct tuner_i2c_props i2c_props;
45
46 unsigned int xogc;
47
48
49 u32 frequency;
50};
51
52static int microtune_release(struct dvb_frontend *fe)
53{
54 kfree(fe->tuner_priv);
55 fe->tuner_priv = NULL;
56
57 return 0;
58}
59
60static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency)
61{
62 struct microtune_priv *priv = fe->tuner_priv;
63 *frequency = priv->frequency;
64 return 0;
65}
66
67
68static int mt2032_spurcheck(struct dvb_frontend *fe,
69 int f1, int f2, int spectrum_from,int spectrum_to)
70{
71 struct microtune_priv *priv = fe->tuner_priv;
72 int n1=1,n2,f;
73
74 f1=f1/1000;
75 f2=f2/1000;
76 spectrum_from/=1000;
77 spectrum_to/=1000;
78
79 tuner_dbg("spurcheck f1=%d f2=%d from=%d to=%d\n",
80 f1,f2,spectrum_from,spectrum_to);
81
82 do {
83 n2=-n1;
84 f=n1*(f1-f2);
85 do {
86 n2--;
87 f=f-f2;
88 tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f);
89
90 if( (f>spectrum_from) && (f<spectrum_to))
91 tuner_dbg("mt2032 spurcheck triggered: %d\n",n1);
92 } while ( (f>(f2-spectrum_to)) || (n2>-5));
93 n1++;
94 } while (n1<5);
95
96 return 1;
97}
98
99static int mt2032_compute_freq(struct dvb_frontend *fe,
100 unsigned int rfin,
101 unsigned int if1, unsigned int if2,
102 unsigned int spectrum_from,
103 unsigned int spectrum_to,
104 unsigned char *buf,
105 int *ret_sel,
106 unsigned int xogc)
107{
108 struct microtune_priv *priv = fe->tuner_priv;
109 unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1,
110 desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq;
111
112 fref= 5250 *1000;
113 desired_lo1=rfin+if1;
114
115 lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000);
116 lo1n=lo1/8;
117 lo1a=lo1-(lo1n*8);
118
119 s=rfin/1000/1000+1090;
120
121 if(optimize_vco) {
122 if(s>1890) sel=0;
123 else if(s>1720) sel=1;
124 else if(s>1530) sel=2;
125 else if(s>1370) sel=3;
126 else sel=4;
127 }
128 else {
129 if(s>1790) sel=0;
130 else if(s>1617) sel=1;
131 else if(s>1449) sel=2;
132 else if(s>1291) sel=3;
133 else sel=4;
134 }
135 *ret_sel=sel;
136
137 lo1freq=(lo1a+8*lo1n)*fref;
138
139 tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n",
140 rfin,lo1,lo1n,lo1a,sel,lo1freq);
141
142 desired_lo2=lo1freq-rfin-if2;
143 lo2=(desired_lo2)/fref;
144 lo2n=lo2/8;
145 lo2a=lo2-(lo2n*8);
146 lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000);
147 lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000;
148
149 tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n",
150 rfin,lo2,lo2n,lo2a,lo2num,lo2freq);
151
152 if (lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a > 7 || lo2n < 17 ||
153 lo2n > 30) {
154 tuner_info("mt2032: frequency parameters out of range: %d %d %d %d\n",
155 lo1a, lo1n, lo2a,lo2n);
156 return(-1);
157 }
158
159 mt2032_spurcheck(fe, lo1freq, desired_lo2, spectrum_from, spectrum_to);
160
161
162
163 buf[0]=lo1n-1;
164 buf[1]=lo1a | (sel<<4);
165 buf[2]=0x86;
166 buf[3]=0x0f;
167 buf[4]=0x1f;
168 buf[5]=(lo2n-1) | (lo2a<<5);
169 if(rfin >400*1000*1000)
170 buf[6]=0xe4;
171 else
172 buf[6]=0xf4;
173 buf[7]=8+xogc;
174 buf[8]=0xc3;
175 buf[9]=0x4e;
176 buf[10]=0xec;
177 buf[11]=(lo2num&0xff);
178 buf[12]=(lo2num>>8) |0x80;
179
180 return 0;
181}
182
183static int mt2032_check_lo_lock(struct dvb_frontend *fe)
184{
185 struct microtune_priv *priv = fe->tuner_priv;
186 int try,lock=0;
187 unsigned char buf[2];
188
189 for(try=0;try<10;try++) {
190 buf[0]=0x0e;
191 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
192 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
193 tuner_dbg("mt2032 Reg.E=0x%02x\n",buf[0]);
194 lock=buf[0] &0x06;
195
196 if (lock==6)
197 break;
198
199 tuner_dbg("mt2032: pll wait 1ms for lock (0x%2x)\n",buf[0]);
200 udelay(1000);
201 }
202 return lock;
203}
204
205static int mt2032_optimize_vco(struct dvb_frontend *fe,int sel,int lock)
206{
207 struct microtune_priv *priv = fe->tuner_priv;
208 unsigned char buf[2];
209 int tad1;
210
211 buf[0]=0x0f;
212 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
213 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
214 tuner_dbg("mt2032 Reg.F=0x%02x\n",buf[0]);
215 tad1=buf[0]&0x07;
216
217 if(tad1 ==0) return lock;
218 if(tad1 ==1) return lock;
219
220 if(tad1==2) {
221 if(sel==0)
222 return lock;
223 else sel--;
224 }
225 else {
226 if(sel<4)
227 sel++;
228 else
229 return lock;
230 }
231
232 tuner_dbg("mt2032 optimize_vco: sel=%d\n",sel);
233
234 buf[0]=0x0f;
235 buf[1]=sel;
236 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
237 lock=mt2032_check_lo_lock(fe);
238 return lock;
239}
240
241
242static void mt2032_set_if_freq(struct dvb_frontend *fe, unsigned int rfin,
243 unsigned int if1, unsigned int if2,
244 unsigned int from, unsigned int to)
245{
246 unsigned char buf[21];
247 int lint_try,ret,sel,lock=0;
248 struct microtune_priv *priv = fe->tuner_priv;
249
250 tuner_dbg("mt2032_set_if_freq rfin=%d if1=%d if2=%d from=%d to=%d\n",
251 rfin,if1,if2,from,to);
252
253 buf[0]=0;
254 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
255 tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
256
257 buf[0]=0;
258 ret=mt2032_compute_freq(fe,rfin,if1,if2,from,to,&buf[1],&sel,priv->xogc);
259 if (ret<0)
260 return;
261
262
263 buf[0]=0;
264 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,4);
265 buf[5]=5;
266 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,4);
267 buf[11]=11;
268 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+11,3);
269 if(ret!=3)
270 tuner_warn("i2c i/o error: rc == %d (should be 3)\n",ret);
271
272
273 for(lint_try=0; lint_try<2; lint_try++) {
274 lock=mt2032_check_lo_lock(fe);
275
276 if(optimize_vco)
277 lock=mt2032_optimize_vco(fe,sel,lock);
278 if(lock==6) break;
279
280 tuner_dbg("mt2032: re-init PLLs by LINT\n");
281 buf[0]=7;
282 buf[1]=0x80 +8+priv->xogc;
283 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
284 mdelay(10);
285 buf[1]=8+priv->xogc;
286 tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
287 }
288
289 if (lock!=6)
290 tuner_warn("MT2032 Fatal Error: PLLs didn't lock.\n");
291
292 buf[0]=2;
293 buf[1]=0x20;
294 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
295 if (ret!=2)
296 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
297}
298
299
300static int mt2032_set_tv_freq(struct dvb_frontend *fe,
301 struct analog_parameters *params)
302{
303 int if2,from,to;
304
305
306 if (params->std & V4L2_STD_525_60) {
307
308 from = 40750*1000;
309 to = 46750*1000;
310 if2 = 45750*1000;
311 } else {
312
313 from = 32900*1000;
314 to = 39900*1000;
315 if2 = 38900*1000;
316 }
317
318 mt2032_set_if_freq(fe, params->frequency*62500,
319 1090*1000*1000, if2, from, to);
320
321 return 0;
322}
323
324static int mt2032_set_radio_freq(struct dvb_frontend *fe,
325 struct analog_parameters *params)
326{
327 struct microtune_priv *priv = fe->tuner_priv;
328 int if2;
329
330 if (params->std & V4L2_STD_525_60) {
331 tuner_dbg("pinnacle ntsc\n");
332 if2 = 41300 * 1000;
333 } else {
334 tuner_dbg("pinnacle pal\n");
335 if2 = 33300 * 1000;
336 }
337
338
339 mt2032_set_if_freq(fe, params->frequency * 125 / 2,
340 1085*1000*1000,if2,if2,if2);
341
342 return 0;
343}
344
345static int mt2032_set_params(struct dvb_frontend *fe,
346 struct analog_parameters *params)
347{
348 struct microtune_priv *priv = fe->tuner_priv;
349 int ret = -EINVAL;
350
351 switch (params->mode) {
352 case V4L2_TUNER_RADIO:
353 ret = mt2032_set_radio_freq(fe, params);
354 priv->frequency = params->frequency * 125 / 2;
355 break;
356 case V4L2_TUNER_ANALOG_TV:
357 case V4L2_TUNER_DIGITAL_TV:
358 ret = mt2032_set_tv_freq(fe, params);
359 priv->frequency = params->frequency * 62500;
360 break;
361 }
362
363 return ret;
364}
365
366static const struct dvb_tuner_ops mt2032_tuner_ops = {
367 .set_analog_params = mt2032_set_params,
368 .release = microtune_release,
369 .get_frequency = microtune_get_frequency,
370};
371
372
373static int mt2032_init(struct dvb_frontend *fe)
374{
375 struct microtune_priv *priv = fe->tuner_priv;
376 unsigned char buf[21];
377 int ret,xogc,xok=0;
378
379
380 buf[1]=2;
381 buf[2]=0xff;
382 buf[3]=0x0f;
383 buf[4]=0x1f;
384 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+1,4);
385
386 buf[5]=6;
387 buf[6]=0xe4;
388 buf[7]=0x8f;
389 buf[8]=0xc3;
390 buf[9]=0x4e;
391 buf[10]=0xec;
392 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,6);
393
394 buf[12]=13;
395 buf[13]=0x32;
396 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2);
397
398
399 xogc=7;
400 do {
401 tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
402 mdelay(10);
403 buf[0]=0x0e;
404 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
405 tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
406 xok=buf[0]&0x01;
407 tuner_dbg("mt2032: xok = 0x%02x\n",xok);
408 if (xok == 1) break;
409
410 xogc--;
411 tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
412 if (xogc == 3) {
413 xogc=4;
414 break;
415 }
416 buf[0]=0x07;
417 buf[1]=0x88 + xogc;
418 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
419 if (ret!=2)
420 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
421 } while (xok != 1 );
422 priv->xogc=xogc;
423
424 memcpy(&fe->ops.tuner_ops, &mt2032_tuner_ops, sizeof(struct dvb_tuner_ops));
425
426 return(1);
427}
428
429static void mt2050_set_antenna(struct dvb_frontend *fe, unsigned char antenna)
430{
431 struct microtune_priv *priv = fe->tuner_priv;
432 unsigned char buf[2];
433
434 buf[0] = 6;
435 buf[1] = antenna ? 0x11 : 0x10;
436 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
437 tuner_dbg("mt2050: enabled antenna connector %d\n", antenna);
438}
439
440static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2)
441{
442 struct microtune_priv *priv = fe->tuner_priv;
443 unsigned int if1=1218*1000*1000;
444 unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b;
445 int ret;
446 unsigned char buf[6];
447
448 tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n",
449 freq,if1,if2);
450
451 f_lo1=freq+if1;
452 f_lo1=(f_lo1/1000000)*1000000;
453
454 f_lo2=f_lo1-freq-if2;
455 f_lo2=(f_lo2/50000)*50000;
456
457 lo1=f_lo1/4000000;
458 lo2=f_lo2/4000000;
459
460 f_lo1_modulo= f_lo1-(lo1*4000000);
461 f_lo2_modulo= f_lo2-(lo2*4000000);
462
463 num1=4*f_lo1_modulo/4000000;
464 num2=4096*(f_lo2_modulo/1000)/4000;
465
466
467
468 div1a=(lo1/12)-1;
469 div1b=lo1-(div1a+1)*12;
470
471 div2a=(lo2/8)-1;
472 div2b=lo2-(div2a+1)*8;
473
474 if (debug > 1) {
475 tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2);
476 tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n",
477 num1,num2,div1a,div1b,div2a,div2b);
478 }
479
480 buf[0]=1;
481 buf[1]= 4*div1b + num1;
482 if(freq<275*1000*1000) buf[1] = buf[1]|0x80;
483
484 buf[2]=div1a;
485 buf[3]=32*div2b + num2/256;
486 buf[4]=num2-(num2/256)*256;
487 buf[5]=div2a;
488 if(num2!=0) buf[5]=buf[5]|0x40;
489
490 if (debug > 1) {
491 int i;
492 tuner_dbg("bufs is: ");
493 for(i=0;i<6;i++)
494 printk("%x ",buf[i]);
495 printk("\n");
496 }
497
498 ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6);
499 if (ret!=6)
500 tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret);
501}
502
503static int mt2050_set_tv_freq(struct dvb_frontend *fe,
504 struct analog_parameters *params)
505{
506 unsigned int if2;
507
508 if (params->std & V4L2_STD_525_60) {
509
510 if2 = 45750*1000;
511 } else {
512
513 if2 = 38900*1000;
514 }
515 if (V4L2_TUNER_DIGITAL_TV == params->mode) {
516
517 if2 = 36150*1000;
518 }
519 mt2050_set_if_freq(fe, params->frequency*62500, if2);
520 mt2050_set_antenna(fe, tv_antenna);
521
522 return 0;
523}
524
525static int mt2050_set_radio_freq(struct dvb_frontend *fe,
526 struct analog_parameters *params)
527{
528 struct microtune_priv *priv = fe->tuner_priv;
529 int if2;
530
531 if (params->std & V4L2_STD_525_60) {
532 tuner_dbg("pinnacle ntsc\n");
533 if2 = 41300 * 1000;
534 } else {
535 tuner_dbg("pinnacle pal\n");
536 if2 = 33300 * 1000;
537 }
538
539 mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2);
540 mt2050_set_antenna(fe, radio_antenna);
541
542 return 0;
543}
544
545static int mt2050_set_params(struct dvb_frontend *fe,
546 struct analog_parameters *params)
547{
548 struct microtune_priv *priv = fe->tuner_priv;
549 int ret = -EINVAL;
550
551 switch (params->mode) {
552 case V4L2_TUNER_RADIO:
553 ret = mt2050_set_radio_freq(fe, params);
554 priv->frequency = params->frequency * 125 / 2;
555 break;
556 case V4L2_TUNER_ANALOG_TV:
557 case V4L2_TUNER_DIGITAL_TV:
558 ret = mt2050_set_tv_freq(fe, params);
559 priv->frequency = params->frequency * 62500;
560 break;
561 }
562
563 return ret;
564}
565
566static const struct dvb_tuner_ops mt2050_tuner_ops = {
567 .set_analog_params = mt2050_set_params,
568 .release = microtune_release,
569 .get_frequency = microtune_get_frequency,
570};
571
572static int mt2050_init(struct dvb_frontend *fe)
573{
574 struct microtune_priv *priv = fe->tuner_priv;
575 unsigned char buf[2];
576
577 buf[0] = 6;
578 buf[1] = 0x10;
579 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
580
581 buf[0] = 0x0f;
582 buf[1] = 0x0f;
583 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
584
585 buf[0] = 0x0d;
586 tuner_i2c_xfer_send(&priv->i2c_props, buf, 1);
587 tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1);
588
589 tuner_dbg("mt2050: sro is %x\n", buf[0]);
590
591 memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops));
592
593 return 0;
594}
595
596struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
597 struct i2c_adapter* i2c_adap,
598 u8 i2c_addr)
599{
600 struct microtune_priv *priv = NULL;
601 char *name;
602 unsigned char buf[21];
603 int company_code;
604
605 priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL);
606 if (priv == NULL)
607 return NULL;
608 fe->tuner_priv = priv;
609
610 priv->i2c_props.addr = i2c_addr;
611 priv->i2c_props.adap = i2c_adap;
612 priv->i2c_props.name = "mt20xx";
613
614
615
616 memset(buf,0,sizeof(buf));
617
618 name = "unknown";
619
620 tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
621 tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
622 if (debug) {
623 int i;
624 tuner_dbg("MT20xx hexdump:");
625 for(i=0;i<21;i++) {
626 printk(" %02x",buf[i]);
627 if(((i+1)%8)==0) printk(" ");
628 }
629 printk("\n");
630 }
631 company_code = buf[0x11] << 8 | buf[0x12];
632 tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n",
633 company_code,buf[0x13],buf[0x14]);
634
635
636 if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
637 NULL != microtune_part[buf[0x13]])
638 name = microtune_part[buf[0x13]];
639 switch (buf[0x13]) {
640 case MT2032:
641 mt2032_init(fe);
642 break;
643 case MT2050:
644 mt2050_init(fe);
645 break;
646 default:
647 tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
648 name);
649 return NULL;
650 }
651
652 strlcpy(fe->ops.tuner_ops.info.name, name,
653 sizeof(fe->ops.tuner_ops.info.name));
654 tuner_info("microtune %s found, OK\n",name);
655 return fe;
656}
657
658EXPORT_SYMBOL_GPL(microtune_attach);
659
660MODULE_DESCRIPTION("Microtune tuner driver");
661MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
662MODULE_LICENSE("GPL");
663
