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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 | // SPDX-License-Identifier: GPL-2.0-only /* * i2c tv tuner chip device driver * controls microtune tuners, mt2032 + mt2050 at the moment. * * This "mt20xx" module was split apart from the original "tuner" module. */ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/videodev2.h> #include "tuner-i2c.h" #include "mt20xx.h" static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable verbose debug messages"); /* ---------------------------------------------------------------------- */ static unsigned int optimize_vco = 1; module_param(optimize_vco, int, 0644); static unsigned int tv_antenna = 1; module_param(tv_antenna, int, 0644); static unsigned int radio_antenna; module_param(radio_antenna, int, 0644); /* ---------------------------------------------------------------------- */ #define MT2032 0x04 #define MT2030 0x06 #define MT2040 0x07 #define MT2050 0x42 static char *microtune_part[] = { [ MT2030 ] = "MT2030", [ MT2032 ] = "MT2032", [ MT2040 ] = "MT2040", [ MT2050 ] = "MT2050", }; struct microtune_priv { struct tuner_i2c_props i2c_props; unsigned int xogc; //unsigned int radio_if2; u32 frequency; }; static void microtune_release(struct dvb_frontend *fe) { kfree(fe->tuner_priv); fe->tuner_priv = NULL; } static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct microtune_priv *priv = fe->tuner_priv; *frequency = priv->frequency; return 0; } // IsSpurInBand()? static int mt2032_spurcheck(struct dvb_frontend *fe, int f1, int f2, int spectrum_from,int spectrum_to) { struct microtune_priv *priv = fe->tuner_priv; int n1=1,n2,f; f1=f1/1000; //scale to kHz to avoid 32bit overflows f2=f2/1000; spectrum_from/=1000; spectrum_to/=1000; tuner_dbg("spurcheck f1=%d f2=%d from=%d to=%d\n", f1,f2,spectrum_from,spectrum_to); do { n2=-n1; f=n1*(f1-f2); do { n2--; f=f-f2; tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f); if( (f>spectrum_from) && (f<spectrum_to)) tuner_dbg("mt2032 spurcheck triggered: %d\n",n1); } while ( (f>(f2-spectrum_to)) || (n2>-5)); n1++; } while (n1<5); return 1; } static int mt2032_compute_freq(struct dvb_frontend *fe, unsigned int rfin, unsigned int if1, unsigned int if2, unsigned int spectrum_from, unsigned int spectrum_to, unsigned char *buf, int *ret_sel, unsigned int xogc) //all in Hz { struct microtune_priv *priv = fe->tuner_priv; unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1, desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq; fref= 5250 *1000; //5.25MHz desired_lo1=rfin+if1; lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000); lo1n=lo1/8; lo1a=lo1-(lo1n*8); s=rfin/1000/1000+1090; if(optimize_vco) { if(s>1890) sel=0; else if(s>1720) sel=1; else if(s>1530) sel=2; else if(s>1370) sel=3; else sel=4; // >1090 } else { if(s>1790) sel=0; // <1958 else if(s>1617) sel=1; else if(s>1449) sel=2; else if(s>1291) sel=3; else sel=4; // >1090 } *ret_sel=sel; lo1freq=(lo1a+8*lo1n)*fref; tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n", rfin,lo1,lo1n,lo1a,sel,lo1freq); desired_lo2=lo1freq-rfin-if2; lo2=(desired_lo2)/fref; lo2n=lo2/8; lo2a=lo2-(lo2n*8); lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000); //scale to fit in 32bit arith lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000; tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n", rfin,lo2,lo2n,lo2a,lo2num,lo2freq); if (lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a > 7 || lo2n < 17 || lo2n > 30) { tuner_info("mt2032: frequency parameters out of range: %d %d %d %d\n", lo1a, lo1n, lo2a,lo2n); return(-1); } mt2032_spurcheck(fe, lo1freq, desired_lo2, spectrum_from, spectrum_to); // should recalculate lo1 (one step up/down) // set up MT2032 register map for transfer over i2c buf[0]=lo1n-1; buf[1]=lo1a | (sel<<4); buf[2]=0x86; // LOGC buf[3]=0x0f; //reserved buf[4]=0x1f; buf[5]=(lo2n-1) | (lo2a<<5); if(rfin >400*1000*1000) buf[6]=0xe4; else buf[6]=0xf4; // set PKEN per rev 1.2 buf[7]=8+xogc; buf[8]=0xc3; //reserved buf[9]=0x4e; //reserved buf[10]=0xec; //reserved buf[11]=(lo2num&0xff); buf[12]=(lo2num>>8) |0x80; // Lo2RST return 0; } static int mt2032_check_lo_lock(struct dvb_frontend *fe) { struct microtune_priv *priv = fe->tuner_priv; int try,lock=0; unsigned char buf[2]; for(try=0;try<10;try++) { buf[0]=0x0e; tuner_i2c_xfer_send(&priv->i2c_props,buf,1); tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); tuner_dbg("mt2032 Reg.E=0x%02x\n",buf[0]); lock=buf[0] &0x06; if (lock==6) break; tuner_dbg("mt2032: pll wait 1ms for lock (0x%2x)\n",buf[0]); udelay(1000); } return lock; } static int mt2032_optimize_vco(struct dvb_frontend *fe,int sel,int lock) { struct microtune_priv *priv = fe->tuner_priv; unsigned char buf[2]; int tad1; buf[0]=0x0f; tuner_i2c_xfer_send(&priv->i2c_props,buf,1); tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); tuner_dbg("mt2032 Reg.F=0x%02x\n",buf[0]); tad1=buf[0]&0x07; if(tad1 ==0) return lock; if(tad1 ==1) return lock; if(tad1==2) { if(sel==0) return lock; else sel--; } else { if(sel<4) sel++; else return lock; } tuner_dbg("mt2032 optimize_vco: sel=%d\n",sel); buf[0]=0x0f; buf[1]=sel; tuner_i2c_xfer_send(&priv->i2c_props,buf,2); lock=mt2032_check_lo_lock(fe); return lock; } static void mt2032_set_if_freq(struct dvb_frontend *fe, unsigned int rfin, unsigned int if1, unsigned int if2, unsigned int from, unsigned int to) { unsigned char buf[21]; int lint_try,ret,sel,lock=0; struct microtune_priv *priv = fe->tuner_priv; tuner_dbg("mt2032_set_if_freq rfin=%d if1=%d if2=%d from=%d to=%d\n", rfin,if1,if2,from,to); buf[0]=0; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1); tuner_i2c_xfer_recv(&priv->i2c_props,buf,21); buf[0]=0; ret=mt2032_compute_freq(fe,rfin,if1,if2,from,to,&buf[1],&sel,priv->xogc); if (ret<0) return; // send only the relevant registers per Rev. 1.2 buf[0]=0; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,4); buf[5]=5; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,4); buf[11]=11; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+11,3); if(ret!=3) tuner_warn("i2c i/o error: rc == %d (should be 3)\n",ret); // wait for PLLs to lock (per manual), retry LINT if not. for(lint_try=0; lint_try<2; lint_try++) { lock=mt2032_check_lo_lock(fe); if(optimize_vco) lock=mt2032_optimize_vco(fe,sel,lock); if(lock==6) break; tuner_dbg("mt2032: re-init PLLs by LINT\n"); buf[0]=7; buf[1]=0x80 +8+priv->xogc; // set LINT to re-init PLLs tuner_i2c_xfer_send(&priv->i2c_props,buf,2); mdelay(10); buf[1]=8+priv->xogc; tuner_i2c_xfer_send(&priv->i2c_props,buf,2); } if (lock!=6) tuner_warn("MT2032 Fatal Error: PLLs didn't lock.\n"); buf[0]=2; buf[1]=0x20; // LOGC for optimal phase noise ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); if (ret!=2) tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret); } static int mt2032_set_tv_freq(struct dvb_frontend *fe, struct analog_parameters *params) { int if2,from,to; // signal bandwidth and picture carrier if (params->std & V4L2_STD_525_60) { // NTSC from = 40750*1000; to = 46750*1000; if2 = 45750*1000; } else { // PAL from = 32900*1000; to = 39900*1000; if2 = 38900*1000; } mt2032_set_if_freq(fe, params->frequency*62500, 1090*1000*1000, if2, from, to); return 0; } static int mt2032_set_radio_freq(struct dvb_frontend *fe, struct analog_parameters *params) { struct microtune_priv *priv = fe->tuner_priv; int if2; if (params->std & V4L2_STD_525_60) { tuner_dbg("pinnacle ntsc\n"); if2 = 41300 * 1000; } else { tuner_dbg("pinnacle pal\n"); if2 = 33300 * 1000; } // per Manual for FM tuning: first if center freq. 1085 MHz mt2032_set_if_freq(fe, params->frequency * 125 / 2, 1085*1000*1000,if2,if2,if2); return 0; } static int mt2032_set_params(struct dvb_frontend *fe, struct analog_parameters *params) { struct microtune_priv *priv = fe->tuner_priv; int ret = -EINVAL; switch (params->mode) { case V4L2_TUNER_RADIO: ret = mt2032_set_radio_freq(fe, params); priv->frequency = params->frequency * 125 / 2; break; case V4L2_TUNER_ANALOG_TV: case V4L2_TUNER_DIGITAL_TV: ret = mt2032_set_tv_freq(fe, params); priv->frequency = params->frequency * 62500; break; } return ret; } static const struct dvb_tuner_ops mt2032_tuner_ops = { .set_analog_params = mt2032_set_params, .release = microtune_release, .get_frequency = microtune_get_frequency, }; // Initialization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001 static int mt2032_init(struct dvb_frontend *fe) { struct microtune_priv *priv = fe->tuner_priv; unsigned char buf[21]; int ret,xogc,xok=0; // Initialize Registers per spec. buf[1]=2; // Index to register 2 buf[2]=0xff; buf[3]=0x0f; buf[4]=0x1f; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+1,4); buf[5]=6; // Index register 6 buf[6]=0xe4; buf[7]=0x8f; buf[8]=0xc3; buf[9]=0x4e; buf[10]=0xec; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,6); buf[12]=13; // Index register 13 buf[13]=0x32; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2); // Adjust XOGC (register 7), wait for XOK xogc=7; do { tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07); mdelay(10); buf[0]=0x0e; tuner_i2c_xfer_send(&priv->i2c_props,buf,1); tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); xok=buf[0]&0x01; tuner_dbg("mt2032: xok = 0x%02x\n",xok); if (xok == 1) break; xogc--; tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07); if (xogc == 3) { xogc=4; // min. 4 per spec break; } buf[0]=0x07; buf[1]=0x88 + xogc; ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); if (ret!=2) tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret); } while (xok != 1 ); priv->xogc=xogc; memcpy(&fe->ops.tuner_ops, &mt2032_tuner_ops, sizeof(struct dvb_tuner_ops)); return(1); } static void mt2050_set_antenna(struct dvb_frontend *fe, unsigned char antenna) { struct microtune_priv *priv = fe->tuner_priv; unsigned char buf[2]; buf[0] = 6; buf[1] = antenna ? 0x11 : 0x10; tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); tuner_dbg("mt2050: enabled antenna connector %d\n", antenna); } static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2) { struct microtune_priv *priv = fe->tuner_priv; unsigned int if1=1218*1000*1000; unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b; int ret; unsigned char buf[6]; tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n", freq,if1,if2); f_lo1=freq+if1; f_lo1=(f_lo1/1000000)*1000000; f_lo2=f_lo1-freq-if2; f_lo2=(f_lo2/50000)*50000; lo1=f_lo1/4000000; lo2=f_lo2/4000000; f_lo1_modulo= f_lo1-(lo1*4000000); f_lo2_modulo= f_lo2-(lo2*4000000); num1=4*f_lo1_modulo/4000000; num2=4096*(f_lo2_modulo/1000)/4000; // todo spurchecks div1a=(lo1/12)-1; div1b=lo1-(div1a+1)*12; div2a=(lo2/8)-1; div2b=lo2-(div2a+1)*8; if (debug > 1) { tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2); tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n", num1,num2,div1a,div1b,div2a,div2b); } buf[0]=1; buf[1]= 4*div1b + num1; if(freq<275*1000*1000) buf[1] = buf[1]|0x80; buf[2]=div1a; buf[3]=32*div2b + num2/256; buf[4]=num2-(num2/256)*256; buf[5]=div2a; if(num2!=0) buf[5]=buf[5]|0x40; if (debug > 1) tuner_dbg("bufs is: %*ph\n", 6, buf); ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6); if (ret!=6) tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret); } static int mt2050_set_tv_freq(struct dvb_frontend *fe, struct analog_parameters *params) { unsigned int if2; if (params->std & V4L2_STD_525_60) { // NTSC if2 = 45750*1000; } else { // PAL if2 = 38900*1000; } if (V4L2_TUNER_DIGITAL_TV == params->mode) { // DVB (pinnacle 300i) if2 = 36150*1000; } mt2050_set_if_freq(fe, params->frequency*62500, if2); mt2050_set_antenna(fe, tv_antenna); return 0; } static int mt2050_set_radio_freq(struct dvb_frontend *fe, struct analog_parameters *params) { struct microtune_priv *priv = fe->tuner_priv; int if2; if (params->std & V4L2_STD_525_60) { tuner_dbg("pinnacle ntsc\n"); if2 = 41300 * 1000; } else { tuner_dbg("pinnacle pal\n"); if2 = 33300 * 1000; } mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2); mt2050_set_antenna(fe, radio_antenna); return 0; } static int mt2050_set_params(struct dvb_frontend *fe, struct analog_parameters *params) { struct microtune_priv *priv = fe->tuner_priv; int ret = -EINVAL; switch (params->mode) { case V4L2_TUNER_RADIO: ret = mt2050_set_radio_freq(fe, params); priv->frequency = params->frequency * 125 / 2; break; case V4L2_TUNER_ANALOG_TV: case V4L2_TUNER_DIGITAL_TV: ret = mt2050_set_tv_freq(fe, params); priv->frequency = params->frequency * 62500; break; } return ret; } static const struct dvb_tuner_ops mt2050_tuner_ops = { .set_analog_params = mt2050_set_params, .release = microtune_release, .get_frequency = microtune_get_frequency, }; static int mt2050_init(struct dvb_frontend *fe) { struct microtune_priv *priv = fe->tuner_priv; unsigned char buf[2]; buf[0] = 6; buf[1] = 0x10; tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* power */ buf[0] = 0x0f; buf[1] = 0x0f; tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* m1lo */ buf[0] = 0x0d; tuner_i2c_xfer_send(&priv->i2c_props, buf, 1); tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1); tuner_dbg("mt2050: sro is %x\n", buf[0]); memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops)); return 0; } struct dvb_frontend *microtune_attach(struct dvb_frontend *fe, struct i2c_adapter* i2c_adap, u8 i2c_addr) { struct microtune_priv *priv = NULL; char *name; unsigned char buf[21]; int company_code; priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL); if (priv == NULL) return NULL; fe->tuner_priv = priv; priv->i2c_props.addr = i2c_addr; priv->i2c_props.adap = i2c_adap; priv->i2c_props.name = "mt20xx"; //priv->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */ memset(buf,0,sizeof(buf)); name = "unknown"; tuner_i2c_xfer_send(&priv->i2c_props,buf,1); tuner_i2c_xfer_recv(&priv->i2c_props,buf,21); if (debug) tuner_dbg("MT20xx hexdump: %*ph\n", 21, buf); company_code = buf[0x11] << 8 | buf[0x12]; tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n", company_code,buf[0x13],buf[0x14]); if (buf[0x13] < ARRAY_SIZE(microtune_part) && NULL != microtune_part[buf[0x13]]) name = microtune_part[buf[0x13]]; switch (buf[0x13]) { case MT2032: mt2032_init(fe); break; case MT2050: mt2050_init(fe); break; default: tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n", name); return NULL; } strscpy(fe->ops.tuner_ops.info.name, name, sizeof(fe->ops.tuner_ops.info.name)); tuner_info("microtune %s found, OK\n",name); return fe; } EXPORT_SYMBOL_GPL(microtune_attach); MODULE_DESCRIPTION("Microtune tuner driver"); MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); MODULE_LICENSE("GPL"); |