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 #include <media/tuner-types.h>
  12 #include "tuner-driver.h"
  13
  14 static int offset = 0;
  15 module_param(offset, int, 0664);
  16 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
  17
  18 /* ---------------------------------------------------------------------- */
  19
  20 /* tv standard selection for Temic 4046 FM5
  21    this value takes the low bits of control byte 2
  22    from datasheet Rev.01, Feb.00
  23      standard     BG      I       L       L2      D
  24      picture IF   38.9    38.9    38.9    33.95   38.9
  25      sound 1      33.4    32.9    32.4    40.45   32.4
  26      sound 2      33.16
  27      NICAM        33.05   32.348  33.05           33.05
  28  */
  29 #define TEMIC_SET_PAL_I         0x05
  30 #define TEMIC_SET_PAL_DK        0x09
  31 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
  32 #define TEMIC_SET_PAL_L2        0x0b // change IF !
  33 #define TEMIC_SET_PAL_BG        0x0c
  34
  35 /* tv tuner system standard selection for Philips FQ1216ME
  36    this value takes the low bits of control byte 2
  37    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
  38      standard           BG      DK      I       L       L`
  39      picture carrier    38.90   38.90   38.90   38.90   33.95
  40      colour             34.47   34.47   34.47   34.47   38.38
  41      sound 1            33.40   32.40   32.90   32.40   40.45
  42      sound 2            33.16   -       -       -       -
  43      NICAM              33.05   33.05   32.35   33.05   39.80
  44  */
  45 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
  46 #define PHILIPS_SET_PAL_BGDK    0x09
  47 #define PHILIPS_SET_PAL_L2      0x0a
  48 #define PHILIPS_SET_PAL_L       0x0b
  49
  50 /* system switching for Philips FI1216MF MK2
  51    from datasheet "1996 Jul 09",
  52     standard         BG     L      L'
  53     picture carrier  38.90  38.90  33.95
  54     colour           34.47  34.37  38.38
  55     sound 1          33.40  32.40  40.45
  56     sound 2          33.16  -      -
  57     NICAM            33.05  33.05  39.80
  58  */
  59 #define PHILIPS_MF_SET_STD_BG   0x01 /* Bit 2 must be zero, Bit 3 is system output */
  60 #define PHILIPS_MF_SET_STD_L    0x03 /* Used on Secam France */
  61 #define PHILIPS_MF_SET_STD_LC   0x02 /* Used on SECAM L' */
  62
  63 /* Control byte */
  64
  65 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
  66 #define TUNER_RATIO_SELECT_50   0x00
  67 #define TUNER_RATIO_SELECT_32   0x02
  68 #define TUNER_RATIO_SELECT_166  0x04
  69 #define TUNER_RATIO_SELECT_62   0x06
  70
  71 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
  72
  73 /* Status byte */
  74
  75 #define TUNER_POR         0x80
  76 #define TUNER_FL          0x40
  77 #define TUNER_MODE        0x38
  78 #define TUNER_AFC         0x07
  79 #define TUNER_SIGNAL      0x07
  80 #define TUNER_STEREO      0x10
  81
  82 #define TUNER_PLL_LOCKED   0x40
  83 #define TUNER_STEREO_MK3   0x04
  84
  85 struct tuner_simple_priv {
  86         u16 last_div;
  87         struct tuner_i2c_props i2c_props;
  88 };
  89
  90 /* ---------------------------------------------------------------------- */
  91
  92 static int tuner_getstatus(struct tuner *t)
  93 {
  94         struct tuner_simple_priv *priv = t->priv;
  95         unsigned char byte;
  96
  97         if (1 != tuner_i2c_xfer_recv(&priv->i2c_props,&byte,1))
  98                 return 0;
  99
 100         return byte;
 101 }
 102
 103 static int tuner_signal(struct tuner *t)
 104 {
 105         return (tuner_getstatus(t) & TUNER_SIGNAL) << 13;
 106 }
 107
 108 static int tuner_stereo(struct tuner *t)
 109 {
 110         int stereo, status;
 111
 112         status = tuner_getstatus(t);
 113
 114         switch (t->type) {
 115                 case TUNER_PHILIPS_FM1216ME_MK3:
 116                 case TUNER_PHILIPS_FM1236_MK3:
 117                 case TUNER_PHILIPS_FM1256_IH3:
 118                 case TUNER_LG_NTSC_TAPE:
 119                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 120                         break;
 121                 default:
 122                         stereo = status & TUNER_STEREO;
 123         }
 124
 125         return stereo;
 126 }
 127
 128
 129 /* ---------------------------------------------------------------------- */
 130
 131 static void default_set_tv_freq(struct tuner *t, unsigned int freq)
 132 {
 133         struct tuner_simple_priv *priv = t->priv;
 134         u8 config, cb, tuneraddr;
 135         u16 div;
 136         struct tunertype *tun;
 137         u8 buffer[4];
 138         int rc, IFPCoff, i, j;
 139         enum param_type desired_type;
 140         struct tuner_params *params;
 141
 142         tun = &tuners[t->type];
 143
 144         /* IFPCoff = Video Intermediate Frequency - Vif:
 145                 940  =16*58.75  NTSC/J (Japan)
 146                 732  =16*45.75  M/N STD
 147                 704  =16*44     ATSC (at DVB code)
 148                 632  =16*39.50  I U.K.
 149                 622.4=16*38.90  B/G D/K I, L STD
 150                 592  =16*37.00  D China
 151                 590  =16.36.875 B Australia
 152                 543.2=16*33.95  L' STD
 153                 171.2=16*10.70  FM Radio (at set_radio_freq)
 154         */
 155
 156         if (t->std == V4L2_STD_NTSC_M_JP) {
 157                 IFPCoff      = 940;
 158                 desired_type = TUNER_PARAM_TYPE_NTSC;
 159         } else if ((t->std & V4L2_STD_MN) &&
 160                   !(t->std & ~V4L2_STD_MN)) {
 161                 IFPCoff      = 732;
 162                 desired_type = TUNER_PARAM_TYPE_NTSC;
 163         } else if (t->std == V4L2_STD_SECAM_LC) {
 164                 IFPCoff      = 543;
 165                 desired_type = TUNER_PARAM_TYPE_SECAM;
 166         } else {
 167                 IFPCoff      = 623;
 168                 desired_type = TUNER_PARAM_TYPE_PAL;
 169         }
 170
 171         for (j = 0; j < tun->count-1; j++) {
 172                 if (desired_type != tun->params[j].type)
 173                         continue;
 174                 break;
 175         }
 176         /* use default tuner_params if desired_type not available */
 177         if (desired_type != tun->params[j].type) {
 178                 tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
 179                           IFPCoff,t->type);
 180                 j = 0;
 181         }
 182         params = &tun->params[j];
 183
 184         for (i = 0; i < params->count; i++) {
 185                 if (freq > params->ranges[i].limit)
 186                         continue;
 187                 break;
 188         }
 189         if (i == params->count) {
 190                 tuner_dbg("TV frequency out of range (%d > %d)",
 191                                 freq, params->ranges[i - 1].limit);
 192                 freq = params->ranges[--i].limit;
 193         }
 194         config = params->ranges[i].config;
 195         cb     = params->ranges[i].cb;
 196         /*  i == 0 -> VHF_LO
 197          *  i == 1 -> VHF_HI
 198          *  i == 2 -> UHF     */
 199         tuner_dbg("tv: param %d, range %d\n",j,i);
 200
 201         div=freq + IFPCoff + offset;
 202
 203         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
 204                                         freq / 16, freq % 16 * 100 / 16,
 205                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
 206                                         offset / 16, offset % 16 * 100 / 16,
 207                                         div);
 208
 209         /* tv norm specific stuff for multi-norm tuners */
 210         switch (t->type) {
 211         case TUNER_PHILIPS_SECAM: // FI1216MF
 212                 /* 0x01 -> ??? no change ??? */
 213                 /* 0x02 -> PAL BDGHI / SECAM L */
 214                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 215                 cb &= ~0x03;
 216                 if (t->std & V4L2_STD_SECAM_L) //also valid for V4L2_STD_SECAM
 217                         cb |= PHILIPS_MF_SET_STD_L;
 218                 else if (t->std & V4L2_STD_SECAM_LC)
 219                         cb |= PHILIPS_MF_SET_STD_LC;
 220                 else /* V4L2_STD_B|V4L2_STD_GH */
 221                         cb |= PHILIPS_MF_SET_STD_BG;
 222                 break;
 223
 224         case TUNER_TEMIC_4046FM5:
 225                 cb &= ~0x0f;
 226
 227                 if (t->std & V4L2_STD_PAL_BG) {
 228                         cb |= TEMIC_SET_PAL_BG;
 229
 230                 } else if (t->std & V4L2_STD_PAL_I) {
 231                         cb |= TEMIC_SET_PAL_I;
 232
 233                 } else if (t->std & V4L2_STD_PAL_DK) {
 234                         cb |= TEMIC_SET_PAL_DK;
 235
 236                 } else if (t->std & V4L2_STD_SECAM_L) {
 237                         cb |= TEMIC_SET_PAL_L;
 238
 239                 }
 240                 break;
 241
 242         case TUNER_PHILIPS_FQ1216ME:
 243                 cb &= ~0x0f;
 244
 245                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 246                         cb |= PHILIPS_SET_PAL_BGDK;
 247
 248                 } else if (t->std & V4L2_STD_PAL_I) {
 249                         cb |= PHILIPS_SET_PAL_I;
 250
 251                 } else if (t->std & V4L2_STD_SECAM_L) {
 252                         cb |= PHILIPS_SET_PAL_L;
 253
 254                 }
 255                 break;
 256
 257         case TUNER_PHILIPS_ATSC:
 258                 /* 0x00 -> ATSC antenna input 1 */
 259                 /* 0x01 -> ATSC antenna input 2 */
 260                 /* 0x02 -> NTSC antenna input 1 */
 261                 /* 0x03 -> NTSC antenna input 2 */
 262                 cb &= ~0x03;
 263                 if (!(t->std & V4L2_STD_ATSC))
 264                         cb |= 2;
 265                 /* FIXME: input */
 266                 break;
 267
 268         case TUNER_MICROTUNE_4042FI5:
 269                 /* Set the charge pump for fast tuning */
 270                 config |= TUNER_CHARGE_PUMP;
 271                 break;
 272
 273         case TUNER_PHILIPS_TUV1236D:
 274                 /* 0x40 -> ATSC antenna input 1 */
 275                 /* 0x48 -> ATSC antenna input 2 */
 276                 /* 0x00 -> NTSC antenna input 1 */
 277                 /* 0x08 -> NTSC antenna input 2 */
 278                 buffer[0] = 0x14;
 279                 buffer[1] = 0x00;
 280                 buffer[2] = 0x17;
 281                 buffer[3] = 0x00;
 282                 cb &= ~0x40;
 283                 if (t->std & V4L2_STD_ATSC) {
 284                         cb |= 0x40;
 285                         buffer[1] = 0x04;
 286                 }
 287                 /* set to the correct mode (analog or digital) */
 288                 tuneraddr = priv->i2c_props.addr;
 289                 priv->i2c_props.addr = 0x0a;
 290                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[0],2)))
 291                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 292                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[2],2)))
 293                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 294                 priv->i2c_props.addr = tuneraddr;
 295                 /* FIXME: input */
 296                 break;
 297         }
 298
 299         if (params->cb_first_if_lower_freq && div < priv->last_div) {
 300                 buffer[0] = config;
 301                 buffer[1] = cb;
 302                 buffer[2] = (div>>8) & 0x7f;
 303                 buffer[3] = div      & 0xff;
 304         } else {
 305                 buffer[0] = (div>>8) & 0x7f;
 306                 buffer[1] = div      & 0xff;
 307                 buffer[2] = config;
 308                 buffer[3] = cb;
 309         }
 310         priv->last_div = div;
 311         if (params->has_tda9887) {
 312                 int config = 0;
 313                 int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
 314                         !(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
 315
 316                 if (t->std == V4L2_STD_SECAM_LC) {
 317                         if (params->port1_active ^ params->port1_invert_for_secam_lc)
 318                                 config |= TDA9887_PORT1_ACTIVE;
 319                         if (params->port2_active ^ params->port2_invert_for_secam_lc)
 320                                 config |= TDA9887_PORT2_ACTIVE;
 321                 }
 322                 else {
 323                         if (params->port1_active)
 324                                 config |= TDA9887_PORT1_ACTIVE;
 325                         if (params->port2_active)
 326                                 config |= TDA9887_PORT2_ACTIVE;
 327                 }
 328                 if (params->intercarrier_mode)
 329                         config |= TDA9887_INTERCARRIER;
 330                 if (is_secam_l) {
 331                         if (i == 0 && params->default_top_secam_low)
 332                                 config |= TDA9887_TOP(params->default_top_secam_low);
 333                         else if (i == 1 && params->default_top_secam_mid)
 334                                 config |= TDA9887_TOP(params->default_top_secam_mid);
 335                         else if (params->default_top_secam_high)
 336                                 config |= TDA9887_TOP(params->default_top_secam_high);
 337                 }
 338                 else {
 339                         if (i == 0 && params->default_top_low)
 340                                 config |= TDA9887_TOP(params->default_top_low);
 341                         else if (i == 1 && params->default_top_mid)
 342                                 config |= TDA9887_TOP(params->default_top_mid);
 343                         else if (params->default_top_high)
 344                                 config |= TDA9887_TOP(params->default_top_high);
 345                 }
 346                 if (params->default_pll_gating_18)
 347                         config |= TDA9887_GATING_18;
 348                 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
 349         }
 350         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 351                   buffer[0],buffer[1],buffer[2],buffer[3]);
 352
 353         if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
 354                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 355
 356         switch (t->type) {
 357         case TUNER_LG_TDVS_H06XF:
 358                 /* Set the Auxiliary Byte. */
 359                 buffer[0] = buffer[2];
 360                 buffer[0] &= ~0x20;
 361                 buffer[0] |= 0x18;
 362                 buffer[1] = 0x20;
 363                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
 364
 365                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,2)))
 366                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 367                 break;
 368         case TUNER_MICROTUNE_4042FI5:
 369         {
 370                 // FIXME - this may also work for other tuners
 371                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 372                 u8 status_byte = 0;
 373
 374                 /* Wait until the PLL locks */
 375                 for (;;) {
 376                         if (time_after(jiffies,timeout))
 377                                 return;
 378                         if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,&status_byte,1))) {
 379                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
 380                                 break;
 381                         }
 382                         if (status_byte & TUNER_PLL_LOCKED)
 383                                 break;
 384                         udelay(10);
 385                 }
 386
 387                 /* Set the charge pump for optimized phase noise figure */
 388                 config &= ~TUNER_CHARGE_PUMP;
 389                 buffer[0] = (div>>8) & 0x7f;
 390                 buffer[1] = div      & 0xff;
 391                 buffer[2] = config;
 392                 buffer[3] = cb;
 393                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 394                           buffer[0],buffer[1],buffer[2],buffer[3]);
 395
 396                 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
 397                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 398                 break;
 399         }
 400         }
 401 }
 402
 403 static void default_set_radio_freq(struct tuner *t, unsigned int freq)
 404 {
 405         struct tunertype *tun;
 406         struct tuner_simple_priv *priv = t->priv;
 407         u8 buffer[4];
 408         u16 div;
 409         int rc, j;
 410         struct tuner_params *params;
 411
 412         tun = &tuners[t->type];
 413
 414         for (j = tun->count-1; j > 0; j--)
 415                 if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
 416                         break;
 417         /* default params (j=0) will be used if desired type wasn't found */
 418         params = &tun->params[j];
 419
 420         /* Select Radio 1st IF used */
 421         switch (params->radio_if) {
 422         case 0: /* 10.7 MHz */
 423                 freq += (unsigned int)(10.7*16000);
 424                 break;
 425         case 1: /* 33.3 MHz */
 426                 freq += (unsigned int)(33.3*16000);
 427                 break;
 428         case 2: /* 41.3 MHz */
 429                 freq += (unsigned int)(41.3*16000);
 430                 break;
 431         default:
 432                 tuner_warn("Unsupported radio_if value %d\n", params->radio_if);
 433                 return;
 434         }
 435
 436         /* Bandswitch byte */
 437         switch (t->type) {
 438         case TUNER_TENA_9533_DI:
 439         case TUNER_YMEC_TVF_5533MF:
 440                 tuner_dbg ("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
 441                 return;
 442         case TUNER_PHILIPS_FM1216ME_MK3:
 443         case TUNER_PHILIPS_FM1236_MK3:
 444         case TUNER_PHILIPS_FMD1216ME_MK3:
 445         case TUNER_LG_NTSC_TAPE:
 446         case TUNER_PHILIPS_FM1256_IH3:
 447                 buffer[3] = 0x19;
 448                 break;
 449         case TUNER_TNF_5335MF:
 450                 buffer[3] = 0x11;
 451                 break;
 452         case TUNER_LG_PAL_FM:
 453                 buffer[3] = 0xa5;
 454                 break;
 455         case TUNER_THOMSON_DTT761X:
 456                 buffer[3] = 0x39;
 457                 break;
 458         case TUNER_MICROTUNE_4049FM5:
 459         default:
 460                 buffer[3] = 0xa4;
 461                 break;
 462         }
 463
 464         buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) |
 465                     TUNER_RATIO_SELECT_50; /* 50 kHz step */
 466
 467         /* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
 468            freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
 469            freq * (1/800) */
 470         div = (freq + 400) / 800;
 471
 472         if (params->cb_first_if_lower_freq && div < priv->last_div) {
 473                 buffer[0] = buffer[2];
 474                 buffer[1] = buffer[3];
 475                 buffer[2] = (div>>8) & 0x7f;
 476                 buffer[3] = div      & 0xff;
 477         } else {
 478                 buffer[0] = (div>>8) & 0x7f;
 479                 buffer[1] = div      & 0xff;
 480         }
 481
 482         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 483                buffer[0],buffer[1],buffer[2],buffer[3]);
 484         priv->last_div = div;
 485
 486         if (params->has_tda9887) {
 487                 int config = 0;
 488                 if (params->port1_active && !params->port1_fm_high_sensitivity)
 489                         config |= TDA9887_PORT1_ACTIVE;
 490                 if (params->port2_active && !params->port2_fm_high_sensitivity)
 491                         config |= TDA9887_PORT2_ACTIVE;
 492                 if (params->intercarrier_mode)
 493                         config |= TDA9887_INTERCARRIER;
 494 /*              if (params->port1_set_for_fm_mono)
 495                         config &= ~TDA9887_PORT1_ACTIVE;*/
 496                 if (params->fm_gain_normal)
 497                         config |= TDA9887_GAIN_NORMAL;
 498                 if (params->radio_if == 2)
 499                         config |= TDA9887_RIF_41_3;
 500                 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
 501         }
 502         if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
 503                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 504 }
 505
 506 static void tuner_release(struct tuner *t)
 507 {
 508         kfree(t->priv);
 509         t->priv = NULL;
 510 }
 511
 512 static struct tuner_operations simple_tuner_ops = {
 513         .set_tv_freq    = default_set_tv_freq,
 514         .set_radio_freq = default_set_radio_freq,
 515         .has_signal     = tuner_signal,
 516         .is_stereo      = tuner_stereo,
 517         .release        = tuner_release,
 518 };
 519
 520 int default_tuner_init(struct tuner *t)
 521 {
 522         struct tuner_simple_priv *priv = NULL;
 523
 524         priv = kzalloc(sizeof(struct tuner_simple_priv), GFP_KERNEL);
 525         if (priv == NULL)
 526                 return -ENOMEM;
 527         t->priv = priv;
 528
 529         priv->i2c_props.addr = t->i2c.addr;
 530         priv->i2c_props.adap = t->i2c.adapter;
 531
 532         tuner_info("type set to %d (%s)\n",
 533                    t->type, tuners[t->type].name);
 534         strlcpy(t->i2c.name, tuners[t->type].name, sizeof(t->i2c.name));
 535
 536         memcpy(&t->ops, &simple_tuner_ops, sizeof(struct tuner_operations));
 537
 538         return 0;
 539 }
 540
 541 /*
 542  * Overrides for Emacs so that we follow Linus's tabbing style.
 543  * ---------------------------------------------------------------------------
 544  * Local variables:
 545  * c-basic-offset: 8
 546  * End:
 547  */