drivers/media/video/tuner-simple.c

   1 /*
   2  *
   3  * i2c tv tuner chip device driver
   4  * controls all those simple 4-control-bytes style tuners.
   5  */
   6 #include <linux/delay.h>
   7 #include <linux/i2c.h>
   8 #include <linux/videodev.h>
   9 #include <media/tuner.h>
  10
  11 /* ---------------------------------------------------------------------- */
  12
  13 /* tv standard selection for Temic 4046 FM5
  14    this value takes the low bits of control byte 2
  15    from datasheet Rev.01, Feb.00
  16      standard     BG      I       L       L2      D
  17      picture IF   38.9    38.9    38.9    33.95   38.9
  18      sound 1      33.4    32.9    32.4    40.45   32.4
  19      sound 2      33.16
  20      NICAM        33.05   32.348  33.05           33.05
  21  */
  22 #define TEMIC_SET_PAL_I         0x05
  23 #define TEMIC_SET_PAL_DK        0x09
  24 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
  25 #define TEMIC_SET_PAL_L2        0x0b // change IF !
  26 #define TEMIC_SET_PAL_BG        0x0c
  27
  28 /* tv tuner system standard selection for Philips FQ1216ME
  29    this value takes the low bits of control byte 2
  30    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
  31      standard           BG      DK      I       L       L`
  32      picture carrier    38.90   38.90   38.90   38.90   33.95
  33      colour             34.47   34.47   34.47   34.47   38.38
  34      sound 1            33.40   32.40   32.90   32.40   40.45
  35      sound 2            33.16   -       -       -       -
  36      NICAM              33.05   33.05   32.35   33.05   39.80
  37  */
  38 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
  39 #define PHILIPS_SET_PAL_BGDK    0x09
  40 #define PHILIPS_SET_PAL_L2      0x0a
  41 #define PHILIPS_SET_PAL_L       0x0b
  42
  43 /* system switching for Philips FI1216MF MK2
  44    from datasheet "1996 Jul 09",
  45     standard         BG     L      L'
  46     picture carrier  38.90  38.90  33.95
  47     colour           34.47  34.37  38.38
  48     sound 1          33.40  32.40  40.45
  49     sound 2          33.16  -      -
  50     NICAM            33.05  33.05  39.80
  51  */
  52 #define PHILIPS_MF_SET_BG       0x01 /* Bit 2 must be zero, Bit 3 is system output */
  53 #define PHILIPS_MF_SET_PAL_L    0x03 // France
  54 #define PHILIPS_MF_SET_PAL_L2   0x02 // L'
  55
  56 /* Control byte */
  57
  58 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
  59 #define TUNER_RATIO_SELECT_50   0x00
  60 #define TUNER_RATIO_SELECT_32   0x02
  61 #define TUNER_RATIO_SELECT_166  0x04
  62 #define TUNER_RATIO_SELECT_62   0x06
  63
  64 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
  65
  66 /* Status byte */
  67
  68 #define TUNER_POR         0x80
  69 #define TUNER_FL          0x40
  70 #define TUNER_MODE        0x38
  71 #define TUNER_AFC         0x07
  72 #define TUNER_SIGNAL      0x07
  73 #define TUNER_STEREO      0x10
  74
  75 #define TUNER_PLL_LOCKED   0x40
  76 #define TUNER_STEREO_MK3   0x04
  77
  78 /* ---------------------------------------------------------------------- */
  79
  80 struct tunertype
  81 {
  82         char *name;
  83         unsigned char Vendor;
  84         unsigned char Type;
  85
  86         unsigned short thresh1;  /*  band switch VHF_LO <=> VHF_HI  */
  87         unsigned short thresh2;  /*  band switch VHF_HI <=> UHF     */
  88         unsigned char VHF_L;
  89         unsigned char VHF_H;
  90         unsigned char UHF;
  91         unsigned char config;
  92         unsigned short IFPCoff; /* 622.4=16*38.90 MHz PAL,
  93                                    732  =16*45.75 NTSCi,
  94                                    940  =16*58.75 NTSC-Japan
  95                                    704  =16*44    ATSC */
  96 };
  97
  98 /*
  99  *      The floats in the tuner struct are computed at compile time
 100  *      by gcc and cast back to integers. Thus we don't violate the
 101  *      "no float in kernel" rule.
 102  */
 103 static struct tunertype tuners[] = {
 104         /* 0-9 */
 105         { "Temic PAL (4002 FH5)", TEMIC, PAL,
 106           16*140.25,16*463.25,0x02,0x04,0x01,0x8e,623},
 107         { "Philips PAL_I (FI1246 and compatibles)", Philips, PAL_I,
 108           16*140.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
 109         { "Philips NTSC (FI1236,FM1236 and compatibles)", Philips, NTSC,
 110           16*157.25,16*451.25,0xA0,0x90,0x30,0x8e,732},
 111         { "Philips (SECAM+PAL_BG) (FI1216MF, FM1216MF, FR1216MF)", Philips, SECAM,
 112           16*168.25,16*447.25,0xA7,0x97,0x37,0x8e,623},
 113         { "NoTuner", NoTuner, NOTUNER,
 114           0,0,0x00,0x00,0x00,0x00,0x00},
 115         { "Philips PAL_BG (FI1216 and compatibles)", Philips, PAL,
 116           16*168.25,16*447.25,0xA0,0x90,0x30,0x8e,623},
 117         { "Temic NTSC (4032 FY5)", TEMIC, NTSC,
 118           16*157.25,16*463.25,0x02,0x04,0x01,0x8e,732},
 119         { "Temic PAL_I (4062 FY5)", TEMIC, PAL_I,
 120           16*170.00,16*450.00,0x02,0x04,0x01,0x8e,623},
 121         { "Temic NTSC (4036 FY5)", TEMIC, NTSC,
 122           16*157.25,16*463.25,0xa0,0x90,0x30,0x8e,732},
 123         { "Alps HSBH1", TEMIC, NTSC,
 124           16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
 125
 126         /* 10-19 */
 127         { "Alps TSBE1", TEMIC, PAL,
 128           16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
 129         { "Alps TSBB5", Alps, PAL_I, /* tested (UK UHF) with Modulartech MM205 */
 130           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,632},
 131         { "Alps TSBE5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
 132           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,622},
 133         { "Alps TSBC5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
 134           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,608},
 135         { "Temic PAL_BG (4006FH5)", TEMIC, PAL,
 136           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 137         { "Alps TSCH6", Alps, NTSC,
 138           16*137.25,16*385.25,0x14,0x12,0x11,0x8e,732},
 139         { "Temic PAL_DK (4016 FY5)", TEMIC, PAL,
 140           16*168.25,16*456.25,0xa0,0x90,0x30,0x8e,623},
 141         { "Philips NTSC_M (MK2)", Philips, NTSC,
 142           16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
 143         { "Temic PAL_I (4066 FY5)", TEMIC, PAL_I,
 144           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
 145         { "Temic PAL* auto (4006 FN5)", TEMIC, PAL,
 146           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
 147
 148         /* 20-29 */
 149         { "Temic PAL_BG (4009 FR5) or PAL_I (4069 FR5)", TEMIC, PAL,
 150           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
 151         { "Temic NTSC (4039 FR5)", TEMIC, NTSC,
 152           16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
 153         { "Temic PAL/SECAM multi (4046 FM5)", TEMIC, PAL,
 154           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
 155         { "Philips PAL_DK (FI1256 and compatibles)", Philips, PAL,
 156           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 157         { "Philips PAL/SECAM multi (FQ1216ME)", Philips, PAL,
 158           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 159         { "LG PAL_I+FM (TAPC-I001D)", LGINNOTEK, PAL_I,
 160           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 161         { "LG PAL_I (TAPC-I701D)", LGINNOTEK, PAL_I,
 162           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 163         { "LG NTSC+FM (TPI8NSR01F)", LGINNOTEK, NTSC,
 164           16*210.00,16*497.00,0xa0,0x90,0x30,0x8e,732},
 165         { "LG PAL_BG+FM (TPI8PSB01D)", LGINNOTEK, PAL,
 166           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 167         { "LG PAL_BG (TPI8PSB11D)", LGINNOTEK, PAL,
 168           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
 169
 170         /* 30-39 */
 171         { "Temic PAL* auto + FM (4009 FN5)", TEMIC, PAL,
 172           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
 173         { "SHARP NTSC_JP (2U5JF5540)", SHARP, NTSC, /* 940=16*58.75 NTSC@Japan */
 174           16*137.25,16*317.25,0x01,0x02,0x08,0x8e,940 },
 175         { "Samsung PAL TCPM9091PD27", Samsung, PAL, /* from sourceforge v3tv */
 176           16*169,16*464,0xA0,0x90,0x30,0x8e,623},
 177         { "MT20xx universal", Microtune, PAL|NTSC,
 178           /* see mt20xx.c for details */ },
 179         { "Temic PAL_BG (4106 FH5)", TEMIC, PAL,
 180           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
 181         { "Temic PAL_DK/SECAM_L (4012 FY5)", TEMIC, PAL,
 182           16*140.25, 16*463.25, 0x02,0x04,0x01,0x8e,623},
 183         { "Temic NTSC (4136 FY5)", TEMIC, NTSC,
 184           16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
 185         { "LG PAL (newer TAPC series)", LGINNOTEK, PAL,
 186           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,623},
 187         { "Philips PAL/SECAM multi (FM1216ME MK3)", Philips, PAL,
 188           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
 189         { "LG NTSC (newer TAPC series)", LGINNOTEK, NTSC,
 190           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,732},
 191
 192         /* 40-49 */
 193         { "HITACHI V7-J180AT", HITACHI, NTSC,
 194           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,940 },
 195         { "Philips PAL_MK (FI1216 MK)", Philips, PAL,
 196           16*140.25,16*463.25,0x01,0xc2,0xcf,0x8e,623},
 197         { "Philips 1236D ATSC/NTSC daul in", Philips, ATSC,
 198           16*157.25,16*454.00,0xa0,0x90,0x30,0x8e,732},
 199         { "Philips NTSC MK3 (FM1236MK3 or FM1236/F)", Philips, NTSC,
 200           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
 201         { "Philips 4 in 1 (ATI TV Wonder Pro/Conexant)", Philips, NTSC,
 202           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
 203         { "Microtune 4049 FM5", Microtune, PAL,
 204           16*141.00,16*464.00,0xa0,0x90,0x30,0x8e,623},
 205         { "Panasonic VP27s/ENGE4324D", Panasonic, NTSC,
 206           16*160.00,16*454.00,0x01,0x02,0x08,0xce,940},
 207         { "LG NTSC (TAPE series)", LGINNOTEK, NTSC,
 208           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
 209         { "Tenna TNF 8831 BGFF)", Philips, PAL,
 210           16*161.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
 211         { "Microtune 4042 FI5 ATSC/NTSC dual in", Microtune, NTSC,
 212           16*162.00,16*457.00,0xa2,0x94,0x31,0x8e,732},
 213
 214         /* 50-59 */
 215         { "TCL 2002N", TCL, NTSC,
 216           16*172.00,16*448.00,0x01,0x02,0x08,0x8e,732},
 217         { "Philips PAL/SECAM_D (FM 1256 I-H3)", Philips, PAL,
 218           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
 219         { "Thomson DDT 7610 (ATSC/NTSC)", THOMSON, ATSC,
 220           16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
 221         { "Philips FQ1286", Philips, NTSC,
 222           16*160.00,16*454.00,0x41,0x42,0x04,0x8e,940}, /* UHF band untested */
 223         { "tda8290+75", Philips, PAL|NTSC,
 224           /* see tda8290.c for details */ },
 225         { "LG PAL (TAPE series)", LGINNOTEK, PAL,
 226           16*170.00, 16*450.00, 0x01,0x02,0x08,0xce,623},
 227         { "Philips PAL/SECAM multi (FQ1216AME MK4)", Philips, PAL,
 228           16*160.00,16*442.00,0x01,0x02,0x04,0xce,623 },
 229         { "Philips FQ1236A MK4", Philips, NTSC,
 230           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
 231         { "Ymec TVision TVF-8531MF/8831MF/8731MF", Philips, NTSC,
 232           16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
 233         { "Ymec TVision TVF-5533MF", Philips, NTSC,
 234           16*160.00,16*454.00,0x01,0x02,0x04,0x8e,732},
 235
 236         /* 60-66 */
 237         { "Thomson DDT 7611 (ATSC/NTSC)", THOMSON, ATSC,
 238           16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
 239         { "Tena TNF9533-D/IF/TNF9533-B/DF", Philips, PAL,
 240           16*160.25,16*464.25,0x01,0x02,0x04,0x8e,623},
 241         { "Philips TEA5767HN FM Radio", Philips, RADIO,
 242           /* see tea5767.c for details */},
 243         { "Philips FMD1216ME MK3 Hybrid Tuner", Philips, PAL,
 244           16*160.00,16*442.00,0x51,0x52,0x54,0x86,623 },
 245         { "LG TDVS-H062F/TUA6034", LGINNOTEK, ATSC,
 246           16*160.00,16*455.00,0x01,0x02,0x04,0x8e,732},
 247         { "Ymec TVF66T5-B/DFF", Philips, PAL,
 248           16*160.25,16*464.25,0x01,0x02,0x08,0x8e,623},
 249         { "LG NTSC (TALN mini series)", LGINNOTEK, NTSC,
 250           16*137.25,16*373.25,0x01,0x02,0x08,0x8e,732 },
 251 };
 252
 253 unsigned const int tuner_count = ARRAY_SIZE(tuners);
 254
 255 /* ---------------------------------------------------------------------- */
 256
 257 static int tuner_getstatus(struct i2c_client *c)
 258 {
 259         unsigned char byte;
 260
 261         if (1 != i2c_master_recv(c,&byte,1))
 262                 return 0;
 263
 264         return byte;
 265 }
 266
 267 static int tuner_signal(struct i2c_client *c)
 268 {
 269         return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
 270 }
 271
 272 static int tuner_stereo(struct i2c_client *c)
 273 {
 274         int stereo, status;
 275         struct tuner *t = i2c_get_clientdata(c);
 276
 277         status = tuner_getstatus (c);
 278
 279         switch (t->type) {
 280                 case TUNER_PHILIPS_FM1216ME_MK3:
 281                 case TUNER_PHILIPS_FM1236_MK3:
 282                 case TUNER_PHILIPS_FM1256_IH3:
 283                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 284                         break;
 285                 default:
 286                         stereo = status & TUNER_STEREO;
 287         }
 288
 289         return stereo;
 290 }
 291
 292
 293 /* ---------------------------------------------------------------------- */
 294
 295 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
 296 {
 297         struct tuner *t = i2c_get_clientdata(c);
 298         u8 config;
 299         u16 div;
 300         struct tunertype *tun;
 301         unsigned char buffer[4];
 302         int rc;
 303
 304         tun = &tuners[t->type];
 305         if (freq < tun->thresh1) {
 306                 config = tun->VHF_L;
 307                 tuner_dbg("tv: VHF lowrange\n");
 308         } else if (freq < tun->thresh2) {
 309                 config = tun->VHF_H;
 310                 tuner_dbg("tv: VHF high range\n");
 311         } else {
 312                 config = tun->UHF;
 313                 tuner_dbg("tv: UHF range\n");
 314         }
 315
 316
 317         /* tv norm specific stuff for multi-norm tuners */
 318         switch (t->type) {
 319         case TUNER_PHILIPS_SECAM: // FI1216MF
 320                 /* 0x01 -> ??? no change ??? */
 321                 /* 0x02 -> PAL BDGHI / SECAM L */
 322                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 323                 config &= ~0x02;
 324                 if (t->std & V4L2_STD_SECAM)
 325                         config |= 0x02;
 326                 break;
 327
 328         case TUNER_TEMIC_4046FM5:
 329                 config &= ~0x0f;
 330
 331                 if (t->std & V4L2_STD_PAL_BG) {
 332                         config |= TEMIC_SET_PAL_BG;
 333
 334                 } else if (t->std & V4L2_STD_PAL_I) {
 335                         config |= TEMIC_SET_PAL_I;
 336
 337                 } else if (t->std & V4L2_STD_PAL_DK) {
 338                         config |= TEMIC_SET_PAL_DK;
 339
 340                 } else if (t->std & V4L2_STD_SECAM_L) {
 341                         config |= TEMIC_SET_PAL_L;
 342
 343                 }
 344                 break;
 345
 346         case TUNER_PHILIPS_FQ1216ME:
 347                 config &= ~0x0f;
 348
 349                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 350                         config |= PHILIPS_SET_PAL_BGDK;
 351
 352                 } else if (t->std & V4L2_STD_PAL_I) {
 353                         config |= PHILIPS_SET_PAL_I;
 354
 355                 } else if (t->std & V4L2_STD_SECAM_L) {
 356                         config |= PHILIPS_SET_PAL_L;
 357
 358                 }
 359                 break;
 360
 361         case TUNER_PHILIPS_ATSC:
 362                 /* 0x00 -> ATSC antenna input 1 */
 363                 /* 0x01 -> ATSC antenna input 2 */
 364                 /* 0x02 -> NTSC antenna input 1 */
 365                 /* 0x03 -> NTSC antenna input 2 */
 366                 config &= ~0x03;
 367                 if (!(t->std & V4L2_STD_ATSC))
 368                         config |= 2;
 369                 /* FIXME: input */
 370                 break;
 371
 372         case TUNER_MICROTUNE_4042FI5:
 373                 /* Set the charge pump for fast tuning */
 374                 tun->config |= TUNER_CHARGE_PUMP;
 375                 break;
 376         }
 377
 378         /*
 379          * Philips FI1216MK2 remark from specification :
 380          * for channel selection involving band switching, and to ensure
 381          * smooth tuning to the desired channel without causing
 382          * unnecessary charge pump action, it is recommended to consider
 383          * the difference between wanted channel frequency and the
 384          * current channel frequency.  Unnecessary charge pump action
 385          * will result in very low tuning voltage which may drive the
 386          * oscillator to extreme conditions.
 387          *
 388          * Progfou: specification says to send config data before
 389          * frequency in case (wanted frequency < current frequency).
 390          */
 391
 392         div=freq + tun->IFPCoff;
 393         if (t->type == TUNER_PHILIPS_SECAM && freq < t->freq) {
 394                 buffer[0] = tun->config;
 395                 buffer[1] = config;
 396                 buffer[2] = (div>>8) & 0x7f;
 397                 buffer[3] = div      & 0xff;
 398         } else {
 399                 buffer[0] = (div>>8) & 0x7f;
 400                 buffer[1] = div      & 0xff;
 401                 buffer[2] = tun->config;
 402                 buffer[3] = config;
 403         }
 404         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 405                   buffer[0],buffer[1],buffer[2],buffer[3]);
 406
 407         if (4 != (rc = i2c_master_send(c,buffer,4)))
 408                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 409
 410         if (t->type == TUNER_MICROTUNE_4042FI5) {
 411                 // FIXME - this may also work for other tuners
 412                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 413                 u8 status_byte = 0;
 414
 415                 /* Wait until the PLL locks */
 416                 for (;;) {
 417                         if (time_after(jiffies,timeout))
 418                                 return;
 419                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
 420                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
 421                                 break;
 422                         }
 423                         if (status_byte & TUNER_PLL_LOCKED)
 424                                 break;
 425                         udelay(10);
 426                 }
 427
 428                 /* Set the charge pump for optimized phase noise figure */
 429                 tun->config &= ~TUNER_CHARGE_PUMP;
 430                 buffer[0] = (div>>8) & 0x7f;
 431                 buffer[1] = div      & 0xff;
 432                 buffer[2] = tun->config;
 433                 buffer[3] = config;
 434                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 435                        buffer[0],buffer[1],buffer[2],buffer[3]);
 436
 437                 if (4 != (rc = i2c_master_send(c,buffer,4)))
 438                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 439         }
 440 }
 441
 442 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
 443 {
 444         struct tunertype *tun;
 445         struct tuner *t = i2c_get_clientdata(c);
 446         unsigned char buffer[4];
 447         unsigned div;
 448         int rc;
 449
 450         tun = &tuners[t->type];
 451         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
 452         buffer[2] = (tun->config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
 453
 454         switch (t->type) {
 455         case TUNER_TENA_9533_DI:
 456         case TUNER_YMEC_TVF_5533MF:
 457                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
 458                 return;
 459         case TUNER_PHILIPS_FM1216ME_MK3:
 460         case TUNER_PHILIPS_FM1236_MK3:
 461         case TUNER_PHILIPS_FMD1216ME_MK3:
 462                 buffer[3] = 0x19;
 463                 break;
 464         case TUNER_PHILIPS_FM1256_IH3:
 465                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
 466                 buffer[3] = 0x19;
 467                 break;
 468         case TUNER_LG_PAL_FM:
 469                 buffer[3] = 0xa5;
 470                 break;
 471         case TUNER_MICROTUNE_4049FM5:
 472                 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
 473                 buffer[3] = 0xa4;
 474                 break;
 475         default:
 476                 buffer[3] = 0xa4;
 477                 break;
 478         }
 479         buffer[0] = (div>>8) & 0x7f;
 480         buffer[1] = div      & 0xff;
 481
 482         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 483                buffer[0],buffer[1],buffer[2],buffer[3]);
 484
 485         if (4 != (rc = i2c_master_send(c,buffer,4)))
 486                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 487 }
 488
 489 int default_tuner_init(struct i2c_client *c)
 490 {
 491         struct tuner *t = i2c_get_clientdata(c);
 492
 493         tuner_info("type set to %d (%s)\n",
 494                    t->type, tuners[t->type].name);
 495         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
 496
 497         t->tv_freq    = default_set_tv_freq;
 498         t->radio_freq = default_set_radio_freq;
 499         t->has_signal = tuner_signal;
 500         t->is_stereo  = tuner_stereo;
 501         t->standby = NULL;
 502
 503         return 0;
 504 }
 505
 506 /*
 507  * Overrides for Emacs so that we follow Linus's tabbing style.
 508  * ---------------------------------------------------------------------------
 509  * Local variables:
 510  * c-basic-offset: 8
 511  * End:
 512  */