drivers/media/tuners/mt20xx.c

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