linux/drivers/media/common/tuners/mt20xx.c
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   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
  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        //unsigned int radio_if2;
  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// IsSpurInBand()?
  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; //scale to kHz to avoid 32bit overflows
  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) //all in Hz
 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; //5.25MHz
 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; // >1090
 127        }
 128        else {
 129                if(s>1790) sel=0; // <1958
 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; // >1090
 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); //scale to fit in 32bit arith
 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        // 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
 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        // 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
 300static 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
 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        // 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
 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 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
 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        // 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
 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        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
 441static 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
 504static 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
 526static 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
 546static 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
 567static 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
 573static 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
 598struct 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        priv->i2c_props.name = "mt20xx";
 615
 616        //priv->radio_if2 = 10700 * 1000;       /* 10.7MHz - FM radio */
 617
 618        memset(buf,0,sizeof(buf));
 619
 620        name = "unknown";
 621
 622        tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
 623        tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
 624        if (debug) {
 625                int i;
 626                tuner_dbg("MT20xx hexdump:");
 627                for(i=0;i<21;i++) {
 628                        printk(" %02x",buf[i]);
 629                        if(((i+1)%8)==0) printk(" ");
 630                }
 631                printk("\n");
 632        }
 633        company_code = buf[0x11] << 8 | buf[0x12];
 634        tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n",
 635                   company_code,buf[0x13],buf[0x14]);
 636
 637
 638        if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
 639            NULL != microtune_part[buf[0x13]])
 640                name = microtune_part[buf[0x13]];
 641        switch (buf[0x13]) {
 642        case MT2032:
 643                mt2032_init(fe);
 644                break;
 645        case MT2050:
 646                mt2050_init(fe);
 647                break;
 648        default:
 649                tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
 650                           name);
 651                return NULL;
 652        }
 653
 654        strlcpy(fe->ops.tuner_ops.info.name, name,
 655                sizeof(fe->ops.tuner_ops.info.name));
 656        tuner_info("microtune %s found, OK\n",name);
 657        return fe;
 658}
 659
 660EXPORT_SYMBOL_GPL(microtune_attach);
 661
 662MODULE_DESCRIPTION("Microtune tuner driver");
 663MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
 664MODULE_LICENSE("GPL");
 665
 666/*
 667 * Overrides for Emacs so that we follow Linus's tabbing style.
 668 * ---------------------------------------------------------------------------
 669 * Local variables:
 670 * c-basic-offset: 8
 671 * End:
 672 */
 673