git.oblomov.eu Git - linux-2.6/blob - 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 #include <media/v4l2-common.h>
  11
  12 static int offset = 0;
  13 module_param(offset, int, 0664);
  14 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
  15
  16 /* ---------------------------------------------------------------------- */
  17
  18 /* tv standard selection for Temic 4046 FM5
  19    this value takes the low bits of control byte 2
  20    from datasheet Rev.01, Feb.00
  21      standard     BG      I       L       L2      D
  22      picture IF   38.9    38.9    38.9    33.95   38.9
  23      sound 1      33.4    32.9    32.4    40.45   32.4
  24      sound 2      33.16
  25      NICAM        33.05   32.348  33.05           33.05
  26  */
  27 #define TEMIC_SET_PAL_I         0x05
  28 #define TEMIC_SET_PAL_DK        0x09
  29 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
  30 #define TEMIC_SET_PAL_L2        0x0b // change IF !
  31 #define TEMIC_SET_PAL_BG        0x0c
  32
  33 /* tv tuner system standard selection for Philips FQ1216ME
  34    this value takes the low bits of control byte 2
  35    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
  36      standard           BG      DK      I       L       L`
  37      picture carrier    38.90   38.90   38.90   38.90   33.95
  38      colour             34.47   34.47   34.47   34.47   38.38
  39      sound 1            33.40   32.40   32.90   32.40   40.45
  40      sound 2            33.16   -       -       -       -
  41      NICAM              33.05   33.05   32.35   33.05   39.80
  42  */
  43 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
  44 #define PHILIPS_SET_PAL_BGDK    0x09
  45 #define PHILIPS_SET_PAL_L2      0x0a
  46 #define PHILIPS_SET_PAL_L       0x0b
  47
  48 /* system switching for Philips FI1216MF MK2
  49    from datasheet "1996 Jul 09",
  50     standard         BG     L      L'
  51     picture carrier  38.90  38.90  33.95
  52     colour           34.47  34.37  38.38
  53     sound 1          33.40  32.40  40.45
  54     sound 2          33.16  -      -
  55     NICAM            33.05  33.05  39.80
  56  */
  57 #define PHILIPS_MF_SET_BG       0x01 /* Bit 2 must be zero, Bit 3 is system output */
  58 #define PHILIPS_MF_SET_PAL_L    0x03 // France
  59 #define PHILIPS_MF_SET_PAL_L2   0x02 // L'
  60
  61 /* Control byte */
  62
  63 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
  64 #define TUNER_RATIO_SELECT_50   0x00
  65 #define TUNER_RATIO_SELECT_32   0x02
  66 #define TUNER_RATIO_SELECT_166  0x04
  67 #define TUNER_RATIO_SELECT_62   0x06
  68
  69 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
  70
  71 /* Status byte */
  72
  73 #define TUNER_POR         0x80
  74 #define TUNER_FL          0x40
  75 #define TUNER_MODE        0x38
  76 #define TUNER_AFC         0x07
  77 #define TUNER_SIGNAL      0x07
  78 #define TUNER_STEREO      0x10
  79
  80 #define TUNER_PLL_LOCKED   0x40
  81 #define TUNER_STEREO_MK3   0x04
  82
  83 /* ---------------------------------------------------------------------- */
  84
  85 static int tuner_getstatus(struct i2c_client *c)
  86 {
  87         unsigned char byte;
  88
  89         if (1 != i2c_master_recv(c,&byte,1))
  90                 return 0;
  91
  92         return byte;
  93 }
  94
  95 static int tuner_signal(struct i2c_client *c)
  96 {
  97         return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
  98 }
  99
 100 static int tuner_stereo(struct i2c_client *c)
 101 {
 102         int stereo, status;
 103         struct tuner *t = i2c_get_clientdata(c);
 104
 105         status = tuner_getstatus (c);
 106
 107         switch (t->type) {
 108                 case TUNER_PHILIPS_FM1216ME_MK3:
 109                 case TUNER_PHILIPS_FM1236_MK3:
 110                 case TUNER_PHILIPS_FM1256_IH3:
 111                 case TUNER_LG_NTSC_TAPE:
 112                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 113                         break;
 114                 default:
 115                         stereo = status & TUNER_STEREO;
 116         }
 117
 118         return stereo;
 119 }
 120
 121
 122 /* ---------------------------------------------------------------------- */
 123
 124 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
 125 {
 126         struct tuner *t = i2c_get_clientdata(c);
 127         u8 config, cb, tuneraddr;
 128         u16 div;
 129         struct tunertype *tun;
 130         u8 buffer[4];
 131         int rc, IFPCoff, i, j;
 132         enum param_type desired_type;
 133         struct tuner_params *params;
 134
 135         tun = &tuners[t->type];
 136
 137         /* IFPCoff = Video Intermediate Frequency - Vif:
 138                 940  =16*58.75  NTSC/J (Japan)
 139                 732  =16*45.75  M/N STD
 140                 704  =16*44     ATSC (at DVB code)
 141                 632  =16*39.50  I U.K.
 142                 622.4=16*38.90  B/G D/K I, L STD
 143                 592  =16*37.00  D China
 144                 590  =16.36.875 B Australia
 145                 543.2=16*33.95  L' STD
 146                 171.2=16*10.70  FM Radio (at set_radio_freq)
 147         */
 148
 149         if (t->std == V4L2_STD_NTSC_M_JP) {
 150                 IFPCoff      = 940;
 151                 desired_type = TUNER_PARAM_TYPE_NTSC;
 152         } else if ((t->std & V4L2_STD_MN) &&
 153                   !(t->std & ~V4L2_STD_MN)) {
 154                 IFPCoff      = 732;
 155                 desired_type = TUNER_PARAM_TYPE_NTSC;
 156         } else if (t->std == V4L2_STD_SECAM_LC) {
 157                 IFPCoff      = 543;
 158                 desired_type = TUNER_PARAM_TYPE_SECAM;
 159         } else {
 160                 IFPCoff      = 623;
 161                 desired_type = TUNER_PARAM_TYPE_PAL;
 162         }
 163
 164         for (j = 0; j < tun->count-1; j++) {
 165                 if (desired_type != tun->params[j].type)
 166                         continue;
 167                 break;
 168         }
 169         /* use default tuner_params if desired_type not available */
 170         if (desired_type != tun->params[j].type) {
 171                 tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
 172                           IFPCoff,t->type);
 173                 j = 0;
 174         }
 175         params = &tun->params[j];
 176
 177         for (i = 0; i < params->count; i++) {
 178                 if (freq > params->ranges[i].limit)
 179                         continue;
 180                 break;
 181         }
 182         if (i == params->count) {
 183                 tuner_dbg("TV frequency out of range (%d > %d)",
 184                                 freq, params->ranges[i - 1].limit);
 185                 freq = params->ranges[--i].limit;
 186         }
 187         config = params->ranges[i].config;
 188         cb     = params->ranges[i].cb;
 189         /*  i == 0 -> VHF_LO
 190          *  i == 1 -> VHF_HI
 191          *  i == 2 -> UHF     */
 192         tuner_dbg("tv: param %d, range %d\n",j,i);
 193
 194         div=freq + IFPCoff + offset;
 195
 196         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
 197                                         freq / 16, freq % 16 * 100 / 16,
 198                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
 199                                         offset / 16, offset % 16 * 100 / 16,
 200                                         div);
 201
 202         /* tv norm specific stuff for multi-norm tuners */
 203         switch (t->type) {
 204         case TUNER_PHILIPS_SECAM: // FI1216MF
 205                 /* 0x01 -> ??? no change ??? */
 206                 /* 0x02 -> PAL BDGHI / SECAM L */
 207                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 208                 cb &= ~0x03;
 209                 if (t->std & V4L2_STD_SECAM_L) //also valid for V4L2_STD_SECAM
 210                         cb |= PHILIPS_MF_SET_PAL_L;
 211                 else if (t->std & V4L2_STD_SECAM_LC)
 212                         cb |= PHILIPS_MF_SET_PAL_L2;
 213                 else /* V4L2_STD_B|V4L2_STD_GH */
 214                         cb |= PHILIPS_MF_SET_BG;
 215                 break;
 216
 217         case TUNER_TEMIC_4046FM5:
 218                 cb &= ~0x0f;
 219
 220                 if (t->std & V4L2_STD_PAL_BG) {
 221                         cb |= TEMIC_SET_PAL_BG;
 222
 223                 } else if (t->std & V4L2_STD_PAL_I) {
 224                         cb |= TEMIC_SET_PAL_I;
 225
 226                 } else if (t->std & V4L2_STD_PAL_DK) {
 227                         cb |= TEMIC_SET_PAL_DK;
 228
 229                 } else if (t->std & V4L2_STD_SECAM_L) {
 230                         cb |= TEMIC_SET_PAL_L;
 231
 232                 }
 233                 break;
 234
 235         case TUNER_PHILIPS_FQ1216ME:
 236                 cb &= ~0x0f;
 237
 238                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 239                         cb |= PHILIPS_SET_PAL_BGDK;
 240
 241                 } else if (t->std & V4L2_STD_PAL_I) {
 242                         cb |= PHILIPS_SET_PAL_I;
 243
 244                 } else if (t->std & V4L2_STD_SECAM_L) {
 245                         cb |= PHILIPS_SET_PAL_L;
 246
 247                 }
 248                 break;
 249
 250         case TUNER_PHILIPS_ATSC:
 251                 /* 0x00 -> ATSC antenna input 1 */
 252                 /* 0x01 -> ATSC antenna input 2 */
 253                 /* 0x02 -> NTSC antenna input 1 */
 254                 /* 0x03 -> NTSC antenna input 2 */
 255                 cb &= ~0x03;
 256                 if (!(t->std & V4L2_STD_ATSC))
 257                         cb |= 2;
 258                 /* FIXME: input */
 259                 break;
 260
 261         case TUNER_MICROTUNE_4042FI5:
 262                 /* Set the charge pump for fast tuning */
 263                 config |= TUNER_CHARGE_PUMP;
 264                 break;
 265
 266         case TUNER_PHILIPS_TUV1236D:
 267                 /* 0x40 -> ATSC antenna input 1 */
 268                 /* 0x48 -> ATSC antenna input 2 */
 269                 /* 0x00 -> NTSC antenna input 1 */
 270                 /* 0x08 -> NTSC antenna input 2 */
 271                 buffer[0] = 0x14;
 272                 buffer[1] = 0x00;
 273                 buffer[2] = 0x17;
 274                 buffer[3] = 0x00;
 275                 cb &= ~0x40;
 276                 if (t->std & V4L2_STD_ATSC) {
 277                         cb |= 0x40;
 278                         buffer[1] = 0x04;
 279                 }
 280                 /* set to the correct mode (analog or digital) */
 281                 tuneraddr = c->addr;
 282                 c->addr = 0x0a;
 283                 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
 284                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 285                 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
 286                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 287                 c->addr = tuneraddr;
 288                 /* FIXME: input */
 289                 break;
 290         }
 291
 292         if (params->cb_first_if_lower_freq && div < t->last_div) {
 293                 buffer[0] = config;
 294                 buffer[1] = cb;
 295                 buffer[2] = (div>>8) & 0x7f;
 296                 buffer[3] = div      & 0xff;
 297         } else {
 298                 buffer[0] = (div>>8) & 0x7f;
 299                 buffer[1] = div      & 0xff;
 300                 buffer[2] = config;
 301                 buffer[3] = cb;
 302         }
 303         t->last_div = div;
 304         if (params->has_tda9887) {
 305                 int config = 0;
 306                 int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
 307                         !(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
 308
 309                 if (t->std == V4L2_STD_SECAM_LC) {
 310                         if (params->port1_active ^ params->port1_invert_for_secam_lc)
 311                                 config |= TDA9887_PORT1_ACTIVE;
 312                         if (params->port2_active ^ params->port2_invert_for_secam_lc)
 313                                 config |= TDA9887_PORT2_ACTIVE;
 314                 }
 315                 else {
 316                         if (params->port1_active)
 317                                 config |= TDA9887_PORT1_ACTIVE;
 318                         if (params->port2_active)
 319                                 config |= TDA9887_PORT2_ACTIVE;
 320                 }
 321                 if (params->intercarrier_mode)
 322                         config |= TDA9887_INTERCARRIER;
 323                 if (is_secam_l) {
 324                         if (i == 0 && params->default_top_secam_low)
 325                                 config |= TDA9887_TOP(params->default_top_secam_low);
 326                         else if (i == 1 && params->default_top_secam_mid)
 327                                 config |= TDA9887_TOP(params->default_top_secam_mid);
 328                         else if (params->default_top_secam_high)
 329                                 config |= TDA9887_TOP(params->default_top_secam_high);
 330                 }
 331                 else {
 332                         if (i == 0 && params->default_top_low)
 333                                 config |= TDA9887_TOP(params->default_top_low);
 334                         else if (i == 1 && params->default_top_mid)
 335                                 config |= TDA9887_TOP(params->default_top_mid);
 336                         else if (params->default_top_high)
 337                                 config |= TDA9887_TOP(params->default_top_high);
 338                 }
 339                 if (params->default_pll_gating_18)
 340                         config |= TDA9887_GATING_18;
 341                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 342         }
 343         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 344                   buffer[0],buffer[1],buffer[2],buffer[3]);
 345
 346         if (4 != (rc = i2c_master_send(c,buffer,4)))
 347                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 348
 349         switch (t->type) {
 350         case TUNER_LG_TDVS_H06XF:
 351                 /* Set the Auxiliary Byte. */
 352                 buffer[0] = buffer[2];
 353                 buffer[0] &= ~0x20;
 354                 buffer[0] |= 0x18;
 355                 buffer[1] = 0x20;
 356                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
 357
 358                 if (2 != (rc = i2c_master_send(c,buffer,2)))
 359                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 360                 break;
 361         case TUNER_MICROTUNE_4042FI5:
 362         {
 363                 // FIXME - this may also work for other tuners
 364                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 365                 u8 status_byte = 0;
 366
 367                 /* Wait until the PLL locks */
 368                 for (;;) {
 369                         if (time_after(jiffies,timeout))
 370                                 return;
 371                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
 372                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
 373                                 break;
 374                         }
 375                         if (status_byte & TUNER_PLL_LOCKED)
 376                                 break;
 377                         udelay(10);
 378                 }
 379
 380                 /* Set the charge pump for optimized phase noise figure */
 381                 config &= ~TUNER_CHARGE_PUMP;
 382                 buffer[0] = (div>>8) & 0x7f;
 383                 buffer[1] = div      & 0xff;
 384                 buffer[2] = config;
 385                 buffer[3] = cb;
 386                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 387                           buffer[0],buffer[1],buffer[2],buffer[3]);
 388
 389                 if (4 != (rc = i2c_master_send(c,buffer,4)))
 390                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 391                 break;
 392         }
 393         }
 394 }
 395
 396 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
 397 {
 398         struct tunertype *tun;
 399         struct tuner *t = i2c_get_clientdata(c);
 400         u8 buffer[4];
 401         u16 div;
 402         int rc, j;
 403         enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
 404         struct tuner_params *params;
 405
 406         tun = &tuners[t->type];
 407
 408         for (j = 0; j < tun->count-1; j++) {
 409                 if (desired_type != tun->params[j].type)
 410                         continue;
 411                 break;
 412         }
 413         /* use default tuner_params if desired_type not available */
 414         if (desired_type != tun->params[j].type)
 415                 j = 0;
 416
 417         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
 418         params = &tun->params[j];
 419         buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
 420
 421         switch (t->type) {
 422         case TUNER_TENA_9533_DI:
 423         case TUNER_YMEC_TVF_5533MF:
 424                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
 425                 return;
 426         case TUNER_PHILIPS_FM1216ME_MK3:
 427         case TUNER_PHILIPS_FM1236_MK3:
 428         case TUNER_PHILIPS_FMD1216ME_MK3:
 429         case TUNER_LG_NTSC_TAPE:
 430                 buffer[3] = 0x19;
 431                 break;
 432         case TUNER_TNF_5335MF:
 433                 buffer[3] = 0x11;
 434                 break;
 435         case TUNER_PHILIPS_FM1256_IH3:
 436                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
 437                 buffer[3] = 0x19;
 438                 break;
 439         case TUNER_LG_PAL_FM:
 440                 buffer[3] = 0xa5;
 441                 break;
 442         case TUNER_MICROTUNE_4049FM5:
 443                 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
 444                 buffer[3] = 0xa4;
 445                 break;
 446         default:
 447                 buffer[3] = 0xa4;
 448                 break;
 449         }
 450         if (params->cb_first_if_lower_freq && div < t->last_div) {
 451                 buffer[0] = buffer[2];
 452                 buffer[1] = buffer[3];
 453                 buffer[2] = (div>>8) & 0x7f;
 454                 buffer[3] = div      & 0xff;
 455         } else {
 456                 buffer[0] = (div>>8) & 0x7f;
 457                 buffer[1] = div      & 0xff;
 458         }
 459
 460         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 461                buffer[0],buffer[1],buffer[2],buffer[3]);
 462         t->last_div = div;
 463
 464         if (params->has_tda9887) {
 465                 int config = 0;
 466                 if (params->port1_active && !params->port1_fm_high_sensitivity)
 467                         config |= TDA9887_PORT1_ACTIVE;
 468                 if (params->port2_active && !params->port2_fm_high_sensitivity)
 469                         config |= TDA9887_PORT2_ACTIVE;
 470                 if (params->intercarrier_mode)
 471                         config |= TDA9887_INTERCARRIER;
 472 /*              if (params->port1_set_for_fm_mono)
 473                         config &= ~TDA9887_PORT1_ACTIVE;*/
 474                 if (params->fm_gain_normal)
 475                         config |= TDA9887_GAIN_NORMAL;
 476                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 477         }
 478         if (4 != (rc = i2c_master_send(c,buffer,4)))
 479                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 480 }
 481
 482 int default_tuner_init(struct i2c_client *c)
 483 {
 484         struct tuner *t = i2c_get_clientdata(c);
 485
 486         tuner_info("type set to %d (%s)\n",
 487                    t->type, tuners[t->type].name);
 488         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
 489
 490         t->set_tv_freq = default_set_tv_freq;
 491         t->set_radio_freq = default_set_radio_freq;
 492         t->has_signal = tuner_signal;
 493         t->is_stereo = tuner_stereo;
 494         t->standby = NULL;
 495
 496         return 0;
 497 }
 498
 499 /*
 500  * Overrides for Emacs so that we follow Linus's tabbing style.
 501  * ---------------------------------------------------------------------------
 502  * Local variables:
 503  * c-basic-offset: 8
 504  * End:
 505  */