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                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 112                         break;
 113                 default:
 114                         stereo = status & TUNER_STEREO;
 115         }
 116
 117         return stereo;
 118 }
 119
 120
 121 /* ---------------------------------------------------------------------- */
 122
 123 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
 124 {
 125         struct tuner *t = i2c_get_clientdata(c);
 126         u8 config, cb, tuneraddr;
 127         u16 div;
 128         struct tunertype *tun;
 129         u8 buffer[4];
 130         int rc, IFPCoff, i, j;
 131         enum param_type desired_type;
 132         struct tuner_params *params;
 133
 134         tun = &tuners[t->type];
 135
 136         /* IFPCoff = Video Intermediate Frequency - Vif:
 137                 940  =16*58.75  NTSC/J (Japan)
 138                 732  =16*45.75  M/N STD
 139                 704  =16*44     ATSC (at DVB code)
 140                 632  =16*39.50  I U.K.
 141                 622.4=16*38.90  B/G D/K I, L STD
 142                 592  =16*37.00  D China
 143                 590  =16.36.875 B Australia
 144                 543.2=16*33.95  L' STD
 145                 171.2=16*10.70  FM Radio (at set_radio_freq)
 146         */
 147
 148         if (t->std == V4L2_STD_NTSC_M_JP) {
 149                 IFPCoff      = 940;
 150                 desired_type = TUNER_PARAM_TYPE_NTSC;
 151         } else if ((t->std & V4L2_STD_MN) &&
 152                   !(t->std & ~V4L2_STD_MN)) {
 153                 IFPCoff      = 732;
 154                 desired_type = TUNER_PARAM_TYPE_NTSC;
 155         } else if (t->std == V4L2_STD_SECAM_LC) {
 156                 IFPCoff      = 543;
 157                 desired_type = TUNER_PARAM_TYPE_SECAM;
 158         } else {
 159                 IFPCoff      = 623;
 160                 desired_type = TUNER_PARAM_TYPE_PAL;
 161         }
 162
 163         for (j = 0; j < tun->count-1; j++) {
 164                 if (desired_type != tun->params[j].type)
 165                         continue;
 166                 break;
 167         }
 168         /* use default tuner_params if desired_type not available */
 169         if (desired_type != tun->params[j].type) {
 170                 tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
 171                           IFPCoff,t->type);
 172                 j = 0;
 173         }
 174         params = &tun->params[j];
 175
 176         for (i = 0; i < params->count; i++) {
 177                 if (freq > params->ranges[i].limit)
 178                         continue;
 179                 break;
 180         }
 181         if (i == params->count) {
 182                 tuner_dbg("TV frequency out of range (%d > %d)",
 183                                 freq, params->ranges[i - 1].limit);
 184                 freq = params->ranges[--i].limit;
 185         }
 186         config = params->ranges[i].config;
 187         cb     = params->ranges[i].cb;
 188         /*  i == 0 -> VHF_LO
 189          *  i == 1 -> VHF_HI
 190          *  i == 2 -> UHF     */
 191         tuner_dbg("tv: param %d, range %d\n",j,i);
 192
 193         div=freq + IFPCoff + offset;
 194
 195         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
 196                                         freq / 16, freq % 16 * 100 / 16,
 197                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
 198                                         offset / 16, offset % 16 * 100 / 16,
 199                                         div);
 200
 201         /* tv norm specific stuff for multi-norm tuners */
 202         switch (t->type) {
 203         case TUNER_PHILIPS_SECAM: // FI1216MF
 204                 /* 0x01 -> ??? no change ??? */
 205                 /* 0x02 -> PAL BDGHI / SECAM L */
 206                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 207                 cb &= ~0x02;
 208                 if (t->std & V4L2_STD_SECAM)
 209                         cb |= 0x02;
 210                 break;
 211
 212         case TUNER_TEMIC_4046FM5:
 213                 cb &= ~0x0f;
 214
 215                 if (t->std & V4L2_STD_PAL_BG) {
 216                         cb |= TEMIC_SET_PAL_BG;
 217
 218                 } else if (t->std & V4L2_STD_PAL_I) {
 219                         cb |= TEMIC_SET_PAL_I;
 220
 221                 } else if (t->std & V4L2_STD_PAL_DK) {
 222                         cb |= TEMIC_SET_PAL_DK;
 223
 224                 } else if (t->std & V4L2_STD_SECAM_L) {
 225                         cb |= TEMIC_SET_PAL_L;
 226
 227                 }
 228                 break;
 229
 230         case TUNER_PHILIPS_FQ1216ME:
 231                 cb &= ~0x0f;
 232
 233                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 234                         cb |= PHILIPS_SET_PAL_BGDK;
 235
 236                 } else if (t->std & V4L2_STD_PAL_I) {
 237                         cb |= PHILIPS_SET_PAL_I;
 238
 239                 } else if (t->std & V4L2_STD_SECAM_L) {
 240                         cb |= PHILIPS_SET_PAL_L;
 241
 242                 }
 243                 break;
 244
 245         case TUNER_PHILIPS_ATSC:
 246                 /* 0x00 -> ATSC antenna input 1 */
 247                 /* 0x01 -> ATSC antenna input 2 */
 248                 /* 0x02 -> NTSC antenna input 1 */
 249                 /* 0x03 -> NTSC antenna input 2 */
 250                 cb &= ~0x03;
 251                 if (!(t->std & V4L2_STD_ATSC))
 252                         cb |= 2;
 253                 /* FIXME: input */
 254                 break;
 255
 256         case TUNER_MICROTUNE_4042FI5:
 257                 /* Set the charge pump for fast tuning */
 258                 config |= TUNER_CHARGE_PUMP;
 259                 break;
 260
 261         case TUNER_PHILIPS_TUV1236D:
 262                 /* 0x40 -> ATSC antenna input 1 */
 263                 /* 0x48 -> ATSC antenna input 2 */
 264                 /* 0x00 -> NTSC antenna input 1 */
 265                 /* 0x08 -> NTSC antenna input 2 */
 266                 buffer[0] = 0x14;
 267                 buffer[1] = 0x00;
 268                 buffer[2] = 0x17;
 269                 buffer[3] = 0x00;
 270                 cb &= ~0x40;
 271                 if (t->std & V4L2_STD_ATSC) {
 272                         cb |= 0x40;
 273                         buffer[1] = 0x04;
 274                 }
 275                 /* set to the correct mode (analog or digital) */
 276                 tuneraddr = c->addr;
 277                 c->addr = 0x0a;
 278                 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
 279                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 280                 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
 281                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 282                 c->addr = tuneraddr;
 283                 /* FIXME: input */
 284                 break;
 285         }
 286
 287         if (params->cb_first_if_lower_freq && div < t->last_div) {
 288                 buffer[0] = config;
 289                 buffer[1] = cb;
 290                 buffer[2] = (div>>8) & 0x7f;
 291                 buffer[3] = div      & 0xff;
 292         } else {
 293                 buffer[0] = (div>>8) & 0x7f;
 294                 buffer[1] = div      & 0xff;
 295                 buffer[2] = config;
 296                 buffer[3] = cb;
 297         }
 298         t->last_div = div;
 299         if (params->has_tda9887) {
 300                 int config = 0;
 301                 int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
 302                         !(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
 303
 304                 if (t->std == V4L2_STD_SECAM_LC) {
 305                         if (params->port1_active ^ params->port1_invert_for_secam_lc)
 306                                 config |= TDA9887_PORT1_ACTIVE;
 307                         if (params->port2_active ^ params->port2_invert_for_secam_lc)
 308                                 config |= TDA9887_PORT2_ACTIVE;
 309                 }
 310                 else {
 311                         if (params->port1_active)
 312                                 config |= TDA9887_PORT1_ACTIVE;
 313                         if (params->port2_active)
 314                                 config |= TDA9887_PORT2_ACTIVE;
 315                 }
 316                 if (params->intercarrier_mode)
 317                         config |= TDA9887_INTERCARRIER;
 318                 if (is_secam_l) {
 319                         if (i == 0 && params->default_top_secam_low)
 320                                 config |= TDA9887_TOP(params->default_top_secam_low);
 321                         else if (i == 1 && params->default_top_secam_mid)
 322                                 config |= TDA9887_TOP(params->default_top_secam_mid);
 323                         else if (params->default_top_secam_high)
 324                                 config |= TDA9887_TOP(params->default_top_secam_high);
 325                 }
 326                 else {
 327                         if (i == 0 && params->default_top_low)
 328                                 config |= TDA9887_TOP(params->default_top_low);
 329                         else if (i == 1 && params->default_top_mid)
 330                                 config |= TDA9887_TOP(params->default_top_mid);
 331                         else if (params->default_top_high)
 332                                 config |= TDA9887_TOP(params->default_top_high);
 333                 }
 334                 if (params->default_pll_gating_18)
 335                         config |= TDA9887_GATING_18;
 336                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 337         }
 338         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 339                   buffer[0],buffer[1],buffer[2],buffer[3]);
 340
 341         if (4 != (rc = i2c_master_send(c,buffer,4)))
 342                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 343
 344         switch (t->type) {
 345         case TUNER_LG_TDVS_H06XF:
 346                 /* Set the Auxiliary Byte. */
 347                 buffer[0] = buffer[2];
 348                 buffer[0] &= ~0x20;
 349                 buffer[0] |= 0x18;
 350                 buffer[1] = 0x20;
 351                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
 352
 353                 if (2 != (rc = i2c_master_send(c,buffer,2)))
 354                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 355                 break;
 356         case TUNER_MICROTUNE_4042FI5:
 357         {
 358                 // FIXME - this may also work for other tuners
 359                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 360                 u8 status_byte = 0;
 361
 362                 /* Wait until the PLL locks */
 363                 for (;;) {
 364                         if (time_after(jiffies,timeout))
 365                                 return;
 366                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
 367                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
 368                                 break;
 369                         }
 370                         if (status_byte & TUNER_PLL_LOCKED)
 371                                 break;
 372                         udelay(10);
 373                 }
 374
 375                 /* Set the charge pump for optimized phase noise figure */
 376                 config &= ~TUNER_CHARGE_PUMP;
 377                 buffer[0] = (div>>8) & 0x7f;
 378                 buffer[1] = div      & 0xff;
 379                 buffer[2] = config;
 380                 buffer[3] = cb;
 381                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 382                           buffer[0],buffer[1],buffer[2],buffer[3]);
 383
 384                 if (4 != (rc = i2c_master_send(c,buffer,4)))
 385                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 386                 break;
 387         }
 388         }
 389 }
 390
 391 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
 392 {
 393         struct tunertype *tun;
 394         struct tuner *t = i2c_get_clientdata(c);
 395         u8 buffer[4];
 396         u16 div;
 397         int rc, j;
 398         enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
 399         struct tuner_params *params;
 400
 401         tun = &tuners[t->type];
 402
 403         for (j = 0; j < tun->count-1; j++) {
 404                 if (desired_type != tun->params[j].type)
 405                         continue;
 406                 break;
 407         }
 408         /* use default tuner_params if desired_type not available */
 409         if (desired_type != tun->params[j].type)
 410                 j = 0;
 411
 412         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
 413         params = &tun->params[j];
 414         buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
 415
 416         switch (t->type) {
 417         case TUNER_TENA_9533_DI:
 418         case TUNER_YMEC_TVF_5533MF:
 419                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
 420                 return;
 421         case TUNER_PHILIPS_FM1216ME_MK3:
 422         case TUNER_PHILIPS_FM1236_MK3:
 423         case TUNER_PHILIPS_FMD1216ME_MK3:
 424                 buffer[3] = 0x19;
 425                 break;
 426         case TUNER_TNF_5335MF:
 427                 buffer[3] = 0x11;
 428                 break;
 429         case TUNER_PHILIPS_FM1256_IH3:
 430                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
 431                 buffer[3] = 0x19;
 432                 break;
 433         case TUNER_LG_PAL_FM:
 434                 buffer[3] = 0xa5;
 435                 break;
 436         case TUNER_MICROTUNE_4049FM5:
 437                 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
 438                 buffer[3] = 0xa4;
 439                 break;
 440         default:
 441                 buffer[3] = 0xa4;
 442                 break;
 443         }
 444         if (params->cb_first_if_lower_freq && div < t->last_div) {
 445                 buffer[0] = buffer[2];
 446                 buffer[1] = buffer[3];
 447                 buffer[2] = (div>>8) & 0x7f;
 448                 buffer[3] = div      & 0xff;
 449         } else {
 450                 buffer[0] = (div>>8) & 0x7f;
 451                 buffer[1] = div      & 0xff;
 452         }
 453
 454         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 455                buffer[0],buffer[1],buffer[2],buffer[3]);
 456         t->last_div = div;
 457
 458         if (params->has_tda9887) {
 459                 int config = 0;
 460                 if (params->port1_active && !params->port1_fm_high_sensitivity)
 461                         config |= TDA9887_PORT1_ACTIVE;
 462                 if (params->port2_active && !params->port2_fm_high_sensitivity)
 463                         config |= TDA9887_PORT2_ACTIVE;
 464                 if (params->intercarrier_mode)
 465                         config |= TDA9887_INTERCARRIER;
 466 /*              if (params->port1_set_for_fm_mono)
 467                         config &= ~TDA9887_PORT1_ACTIVE;*/
 468                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 469         }
 470         if (4 != (rc = i2c_master_send(c,buffer,4)))
 471                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 472 }
 473
 474 int default_tuner_init(struct i2c_client *c)
 475 {
 476         struct tuner *t = i2c_get_clientdata(c);
 477
 478         tuner_info("type set to %d (%s)\n",
 479                    t->type, tuners[t->type].name);
 480         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
 481
 482         t->set_tv_freq = default_set_tv_freq;
 483         t->set_radio_freq = default_set_radio_freq;
 484         t->has_signal = tuner_signal;
 485         t->is_stereo = tuner_stereo;
 486         t->standby = NULL;
 487
 488         return 0;
 489 }
 490
 491 /*
 492  * Overrides for Emacs so that we follow Linus's tabbing style.
 493  * ---------------------------------------------------------------------------
 494  * Local variables:
 495  * c-basic-offset: 8
 496  * End:
 497  */