git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/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/videodev.h>
  10 #include "tuner-i2c.h"
  11 #include "mt20xx.h"
  12
  13 static int debug = 0;
  14 module_param(debug, int, 0644);
  15 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  16
  17 #define PREFIX "mt20xx"
  18
  19 /* ---------------------------------------------------------------------- */
  20
  21 static unsigned int optimize_vco  = 1;
  22 module_param(optimize_vco,      int, 0644);
  23
  24 static unsigned int tv_antenna    = 1;
  25 module_param(tv_antenna,        int, 0644);
  26
  27 static unsigned int radio_antenna = 0;
  28 module_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
  37 static char *microtune_part[] = {
  38         [ MT2030 ] = "MT2030",
  39         [ MT2032 ] = "MT2032",
  40         [ MT2040 ] = "MT2040",
  41         [ MT2050 ] = "MT2050",
  42 };
  43
  44 struct microtune_priv {
  45         struct tuner_i2c_props i2c_props;
  46
  47         unsigned int xogc;
  48         //unsigned int radio_if2;
  49
  50         u32 frequency;
  51 };
  52
  53 static int microtune_release(struct dvb_frontend *fe)
  54 {
  55         kfree(fe->tuner_priv);
  56         fe->tuner_priv = NULL;
  57
  58         return 0;
  59 }
  60
  61 static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency)
  62 {
  63         struct microtune_priv *priv = fe->tuner_priv;
  64         *frequency = priv->frequency;
  65         return 0;
  66 }
  67
  68 // IsSpurInBand()?
  69 static int mt2032_spurcheck(struct dvb_frontend *fe,
  70                             int f1, int f2, int spectrum_from,int spectrum_to)
  71 {
  72         struct microtune_priv *priv = fe->tuner_priv;
  73         int n1=1,n2,f;
  74
  75         f1=f1/1000; //scale to kHz to avoid 32bit overflows
  76         f2=f2/1000;
  77         spectrum_from/=1000;
  78         spectrum_to/=1000;
  79
  80         tuner_dbg("spurcheck f1=%d f2=%d  from=%d to=%d\n",
  81                   f1,f2,spectrum_from,spectrum_to);
  82
  83         do {
  84             n2=-n1;
  85             f=n1*(f1-f2);
  86             do {
  87                 n2--;
  88                 f=f-f2;
  89                 tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f);
  90
  91                 if( (f>spectrum_from) && (f<spectrum_to))
  92                         tuner_dbg("mt2032 spurcheck triggered: %d\n",n1);
  93             } while ( (f>(f2-spectrum_to)) || (n2>-5));
  94             n1++;
  95         } while (n1<5);
  96
  97         return 1;
  98 }
  99
 100 static int mt2032_compute_freq(struct dvb_frontend *fe,
 101                                unsigned int rfin,
 102                                unsigned int if1, unsigned int if2,
 103                                unsigned int spectrum_from,
 104                                unsigned int spectrum_to,
 105                                unsigned char *buf,
 106                                int *ret_sel,
 107                                unsigned int xogc) //all in Hz
 108 {
 109         struct microtune_priv *priv = fe->tuner_priv;
 110         unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1,
 111                 desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq;
 112
 113         fref= 5250 *1000; //5.25MHz
 114         desired_lo1=rfin+if1;
 115
 116         lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000);
 117         lo1n=lo1/8;
 118         lo1a=lo1-(lo1n*8);
 119
 120         s=rfin/1000/1000+1090;
 121
 122         if(optimize_vco) {
 123                 if(s>1890) sel=0;
 124                 else if(s>1720) sel=1;
 125                 else if(s>1530) sel=2;
 126                 else if(s>1370) sel=3;
 127                 else sel=4; // >1090
 128         }
 129         else {
 130                 if(s>1790) sel=0; // <1958
 131                 else if(s>1617) sel=1;
 132                 else if(s>1449) sel=2;
 133                 else if(s>1291) sel=3;
 134                 else sel=4; // >1090
 135         }
 136         *ret_sel=sel;
 137
 138         lo1freq=(lo1a+8*lo1n)*fref;
 139
 140         tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n",
 141                   rfin,lo1,lo1n,lo1a,sel,lo1freq);
 142
 143         desired_lo2=lo1freq-rfin-if2;
 144         lo2=(desired_lo2)/fref;
 145         lo2n=lo2/8;
 146         lo2a=lo2-(lo2n*8);
 147         lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000); //scale to fit in 32bit arith
 148         lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000;
 149
 150         tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n",
 151                   rfin,lo2,lo2n,lo2a,lo2num,lo2freq);
 152
 153         if(lo1a<0 || lo1a>7 || lo1n<17 ||lo1n>48 || lo2a<0 ||lo2a >7 ||lo2n<17 || 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         // should recalculate lo1 (one step up/down)
 161
 162         // set up MT2032 register map for transfer over i2c
 163         buf[0]=lo1n-1;
 164         buf[1]=lo1a | (sel<<4);
 165         buf[2]=0x86; // LOGC
 166         buf[3]=0x0f; //reserved
 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; // set PKEN per rev 1.2
 173         buf[7]=8+xogc;
 174         buf[8]=0xc3; //reserved
 175         buf[9]=0x4e; //reserved
 176         buf[10]=0xec; //reserved
 177         buf[11]=(lo2num&0xff);
 178         buf[12]=(lo2num>>8) |0x80; // Lo2RST
 179
 180         return 0;
 181 }
 182
 183 static 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
 205 static 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
 242 static 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         // send only the relevant registers per Rev. 1.2
 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         // wait for PLLs to lock (per manual), retry LINT if not.
 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; // set LINT to re-init PLLs
 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; // LOGC for optimal phase noise
 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
 300 static int mt2032_set_tv_freq(struct dvb_frontend *fe,
 301                               struct analog_parameters *params)
 302 {
 303         int if2,from,to;
 304
 305         // signal bandwidth and picture carrier
 306         if (params->std & V4L2_STD_525_60) {
 307                 // NTSC
 308                 from = 40750*1000;
 309                 to   = 46750*1000;
 310                 if2  = 45750*1000;
 311         } else {
 312                 // PAL
 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
 324 static 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         // per Manual for FM tuning: first if center freq. 1085 MHz
 339         mt2032_set_if_freq(fe, params->frequency * 125 / 2,
 340                            1085*1000*1000,if2,if2,if2);
 341
 342         return 0;
 343 }
 344
 345 static 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
 366 static 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 // Initialization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
 373 static 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         // Initialize Registers per spec.
 380         buf[1]=2; // Index to register 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; // Index register 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;  // Index register 13
 395         buf[13]=0x32;
 396         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2);
 397
 398         // Adjust XOGC (register 7), wait for XOK
 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; // min. 4 per spec
 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
 429 static 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         int ret;
 434
 435         buf[0] = 6;
 436         buf[1] = antenna ? 0x11 : 0x10;
 437         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
 438         tuner_dbg("mt2050: enabled antenna connector %d\n", antenna);
 439 }
 440
 441 static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2)
 442 {
 443         struct microtune_priv *priv = fe->tuner_priv;
 444         unsigned int if1=1218*1000*1000;
 445         unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b;
 446         int ret;
 447         unsigned char buf[6];
 448
 449         tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n",
 450                   freq,if1,if2);
 451
 452         f_lo1=freq+if1;
 453         f_lo1=(f_lo1/1000000)*1000000;
 454
 455         f_lo2=f_lo1-freq-if2;
 456         f_lo2=(f_lo2/50000)*50000;
 457
 458         lo1=f_lo1/4000000;
 459         lo2=f_lo2/4000000;
 460
 461         f_lo1_modulo= f_lo1-(lo1*4000000);
 462         f_lo2_modulo= f_lo2-(lo2*4000000);
 463
 464         num1=4*f_lo1_modulo/4000000;
 465         num2=4096*(f_lo2_modulo/1000)/4000;
 466
 467         // todo spurchecks
 468
 469         div1a=(lo1/12)-1;
 470         div1b=lo1-(div1a+1)*12;
 471
 472         div2a=(lo2/8)-1;
 473         div2b=lo2-(div2a+1)*8;
 474
 475         if (debug > 1) {
 476                 tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2);
 477                 tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n",
 478                           num1,num2,div1a,div1b,div2a,div2b);
 479         }
 480
 481         buf[0]=1;
 482         buf[1]= 4*div1b + num1;
 483         if(freq<275*1000*1000) buf[1] = buf[1]|0x80;
 484
 485         buf[2]=div1a;
 486         buf[3]=32*div2b + num2/256;
 487         buf[4]=num2-(num2/256)*256;
 488         buf[5]=div2a;
 489         if(num2!=0) buf[5]=buf[5]|0x40;
 490
 491         if (debug > 1) {
 492                 int i;
 493                 tuner_dbg("bufs is: ");
 494                 for(i=0;i<6;i++)
 495                         printk("%x ",buf[i]);
 496                 printk("\n");
 497         }
 498
 499         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6);
 500         if (ret!=6)
 501                 tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret);
 502 }
 503
 504 static int mt2050_set_tv_freq(struct dvb_frontend *fe,
 505                               struct analog_parameters *params)
 506 {
 507         unsigned int if2;
 508
 509         if (params->std & V4L2_STD_525_60) {
 510                 // NTSC
 511                 if2 = 45750*1000;
 512         } else {
 513                 // PAL
 514                 if2 = 38900*1000;
 515         }
 516         if (V4L2_TUNER_DIGITAL_TV == params->mode) {
 517                 // DVB (pinnacle 300i)
 518                 if2 = 36150*1000;
 519         }
 520         mt2050_set_if_freq(fe, params->frequency*62500, if2);
 521         mt2050_set_antenna(fe, tv_antenna);
 522
 523         return 0;
 524 }
 525
 526 static int mt2050_set_radio_freq(struct dvb_frontend *fe,
 527                                  struct analog_parameters *params)
 528 {
 529         struct microtune_priv *priv = fe->tuner_priv;
 530         int if2;
 531
 532         if (params->std & V4L2_STD_525_60) {
 533                 tuner_dbg("pinnacle ntsc\n");
 534                 if2 = 41300 * 1000;
 535         } else {
 536                 tuner_dbg("pinnacle pal\n");
 537                 if2 = 33300 * 1000;
 538         }
 539
 540         mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2);
 541         mt2050_set_antenna(fe, radio_antenna);
 542
 543         return 0;
 544 }
 545
 546 static int mt2050_set_params(struct dvb_frontend *fe,
 547                              struct analog_parameters *params)
 548 {
 549         struct microtune_priv *priv = fe->tuner_priv;
 550         int ret = -EINVAL;
 551
 552         switch (params->mode) {
 553         case V4L2_TUNER_RADIO:
 554                 ret = mt2050_set_radio_freq(fe, params);
 555                 priv->frequency = params->frequency * 125 / 2;
 556                 break;
 557         case V4L2_TUNER_ANALOG_TV:
 558         case V4L2_TUNER_DIGITAL_TV:
 559                 ret = mt2050_set_tv_freq(fe, params);
 560                 priv->frequency = params->frequency * 62500;
 561                 break;
 562         }
 563
 564         return ret;
 565 }
 566
 567 static struct dvb_tuner_ops mt2050_tuner_ops = {
 568         .set_analog_params = mt2050_set_params,
 569         .release           = microtune_release,
 570         .get_frequency     = microtune_get_frequency,
 571 };
 572
 573 static int mt2050_init(struct dvb_frontend *fe)
 574 {
 575         struct microtune_priv *priv = fe->tuner_priv;
 576         unsigned char buf[2];
 577         int ret;
 578
 579         buf[0]=6;
 580         buf[1]=0x10;
 581         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); //  power
 582
 583         buf[0]=0x0f;
 584         buf[1]=0x0f;
 585         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); // m1lo
 586
 587         buf[0]=0x0d;
 588         ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
 589         tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
 590
 591         tuner_dbg("mt2050: sro is %x\n",buf[0]);
 592
 593         memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops));
 594
 595         return 0;
 596 }
 597
 598 struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
 599                                       struct i2c_adapter* i2c_adap,
 600                                       u8 i2c_addr)
 601 {
 602         struct microtune_priv *priv = NULL;
 603         char *name;
 604         unsigned char buf[21];
 605         int company_code;
 606
 607         priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL);
 608         if (priv == NULL)
 609                 return NULL;
 610         fe->tuner_priv = priv;
 611
 612         priv->i2c_props.addr = i2c_addr;
 613         priv->i2c_props.adap = i2c_adap;
 614
 615         //priv->radio_if2 = 10700 * 1000;       /* 10.7MHz - FM radio */
 616
 617         memset(buf,0,sizeof(buf));
 618
 619         name = "unknown";
 620
 621         tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
 622         tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
 623         if (debug) {
 624                 int i;
 625                 tuner_dbg("MT20xx hexdump:");
 626                 for(i=0;i<21;i++) {
 627                         printk(" %02x",buf[i]);
 628                         if(((i+1)%8)==0) printk(" ");
 629                 }
 630                 printk("\n");
 631         }
 632         company_code = buf[0x11] << 8 | buf[0x12];
 633         tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n",
 634                    company_code,buf[0x13],buf[0x14]);
 635
 636
 637         if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
 638             NULL != microtune_part[buf[0x13]])
 639                 name = microtune_part[buf[0x13]];
 640         switch (buf[0x13]) {
 641         case MT2032:
 642                 mt2032_init(fe);
 643                 break;
 644         case MT2050:
 645                 mt2050_init(fe);
 646                 break;
 647         default:
 648                 tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
 649                            name);
 650                 return 0;
 651         }
 652
 653         strlcpy(fe->ops.tuner_ops.info.name, name,
 654                 sizeof(fe->ops.tuner_ops.info.name));
 655         tuner_info("microtune %s found, OK\n",name);
 656         return fe;
 657 }
 658
 659 EXPORT_SYMBOL_GPL(microtune_attach);
 660
 661 MODULE_DESCRIPTION("Microtune tuner driver");
 662 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
 663 MODULE_LICENSE("GPL");
 664
 665 /*
 666  * Overrides for Emacs so that we follow Linus's tabbing style.
 667  * ---------------------------------------------------------------------------
 668  * Local variables:
 669  * c-basic-offset: 8
 670  * End:
 671  */