LXR linux/drivers/media/common/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/videodev2.h>
  10#include "tuner-i2c.h"
  11#include "mt20xx.h"
  12
  13static int debug;
  14module_param(debug, int, 0644);
  15MODULE_PARM_DESC(debug, "enable verbose debug messages");
  16
  17/* ---------------------------------------------------------------------- */
  18
  19static unsigned int optimize_vco  = 1;
  20module_param(optimize_vco,      int, 0644);
  21
  22static unsigned int tv_antenna    = 1;
  23module_param(tv_antenna,        int, 0644);
  24
  25static unsigned int radio_antenna;
  26module_param(radio_antenna,     int, 0644);
  27
  28/* ---------------------------------------------------------------------- */
  29
  30#define MT2032 0x04
  31#define MT2030 0x06
  32#define MT2040 0x07
  33#define MT2050 0x42
  34
  35static char *microtune_part[] = {
  36        [ MT2030 ] = "MT2030",
  37        [ MT2032 ] = "MT2032",
  38        [ MT2040 ] = "MT2040",
  39        [ MT2050 ] = "MT2050",
  40};
  41
  42struct microtune_priv {
  43        struct tuner_i2c_props i2c_props;
  44
  45        unsigned int xogc;
  46        //unsigned int radio_if2;
  47
  48        u32 frequency;
  49};
  50
  51static int microtune_release(struct dvb_frontend *fe)
  52{
  53        kfree(fe->tuner_priv);
  54        fe->tuner_priv = NULL;
  55
  56        return 0;
  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// IsSpurInBand()?
  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; //scale to kHz to avoid 32bit overflows
  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) //all in Hz
 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; //5.25MHz
 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; // >1090
 126        }
 127        else {
 128                if(s>1790) sel=0; // <1958
 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; // >1090
 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); //scale to fit in 32bit arith
 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        // should recalculate lo1 (one step up/down)
 160
 161        // set up MT2032 register map for transfer over i2c
 162        buf[0]=lo1n-1;
 163        buf[1]=lo1a | (sel<<4);
 164        buf[2]=0x86; // LOGC
 165        buf[3]=0x0f; //reserved
 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; // set PKEN per rev 1.2
 172        buf[7]=8+xogc;
 173        buf[8]=0xc3; //reserved
 174        buf[9]=0x4e; //reserved
 175        buf[10]=0xec; //reserved
 176        buf[11]=(lo2num&0xff);
 177        buf[12]=(lo2num>>8) |0x80; // Lo2RST
 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        // send only the relevant registers per Rev. 1.2
 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        // wait for PLLs to lock (per manual), retry LINT if not.
 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; // set LINT to re-init PLLs
 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; // LOGC for optimal phase noise
 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        // signal bandwidth and picture carrier
 305        if (params->std & V4L2_STD_525_60) {
 306                // NTSC
 307                from = 40750*1000;
 308                to   = 46750*1000;
 309                if2  = 45750*1000;
 310        } else {
 311                // PAL
 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        // per Manual for FM tuning: first if center freq. 1085 MHz
 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 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// Initialization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
 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        // Initialize Registers per spec.
 379        buf[1]=2; // Index to register 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; // Index register 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;  // Index register 13
 394        buf[13]=0x32;
 395        ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2);
 396
 397        // Adjust XOGC (register 7), wait for XOK
 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; // min. 4 per spec
 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        int ret;
 433
 434        buf[0] = 6;
 435        buf[1] = antenna ? 0x11 : 0x10;
 436        ret=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        // todo spurchecks
 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                // NTSC
 510                if2 = 45750*1000;
 511        } else {
 512                // PAL
 513                if2 = 38900*1000;
 514        }
 515        if (V4L2_TUNER_DIGITAL_TV == params->mode) {
 516                // DVB (pinnacle 300i)
 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 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        int ret;
 577
 578        buf[0]=6;
 579        buf[1]=0x10;
 580        ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); //  power
 581
 582        buf[0]=0x0f;
 583        buf[1]=0x0f;
 584        ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); // m1lo
 585
 586        buf[0]=0x0d;
 587        ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
 588        tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
 589
 590        tuner_dbg("mt2050: sro is %x\n",buf[0]);
 591
 592        memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops));
 593
 594        return 0;
 595}
 596
 597struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
 598                                      struct i2c_adapter* i2c_adap,
 599                                      u8 i2c_addr)
 600{
 601        struct microtune_priv *priv = NULL;
 602        char *name;
 603        unsigned char buf[21];
 604        int company_code;
 605
 606        priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL);
 607        if (priv == NULL)
 608                return NULL;
 609        fe->tuner_priv = priv;
 610
 611        priv->i2c_props.addr = i2c_addr;
 612        priv->i2c_props.adap = i2c_adap;
 613        priv->i2c_props.name = "mt20xx";
 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 NULL;
 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
 659EXPORT_SYMBOL_GPL(microtune_attach);
 660
 661MODULE_DESCRIPTION("Microtune tuner driver");
 662MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
 663MODULE_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 */
 672