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 #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 /* ---------------------------------------------------------------------- */
  86
  87 static int tuner_getstatus(struct i2c_client *c)
  88 {
  89         unsigned char byte;
  90
  91         if (1 != i2c_master_recv(c,&byte,1))
  92                 return 0;
  93
  94         return byte;
  95 }
  96
  97 static int tuner_signal(struct i2c_client *c)
  98 {
  99         return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
 100 }
 101
 102 static int tuner_stereo(struct i2c_client *c)
 103 {
 104         int stereo, status;
 105         struct tuner *t = i2c_get_clientdata(c);
 106
 107         status = tuner_getstatus (c);
 108
 109         switch (t->type) {
 110                 case TUNER_PHILIPS_FM1216ME_MK3:
 111                 case TUNER_PHILIPS_FM1236_MK3:
 112                 case TUNER_PHILIPS_FM1256_IH3:
 113                 case TUNER_LG_NTSC_TAPE:
 114                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 115                         break;
 116                 default:
 117                         stereo = status & TUNER_STEREO;
 118         }
 119
 120         return stereo;
 121 }
 122
 123
 124 /* ---------------------------------------------------------------------- */
 125
 126 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
 127 {
 128         struct tuner *t = i2c_get_clientdata(c);
 129         u8 config, cb, tuneraddr;
 130         u16 div;
 131         struct tunertype *tun;
 132         u8 buffer[4];
 133         int rc, IFPCoff, i, j;
 134         enum param_type desired_type;
 135         struct tuner_params *params;
 136
 137         tun = &tuners[t->type];
 138
 139         /* IFPCoff = Video Intermediate Frequency - Vif:
 140                 940  =16*58.75  NTSC/J (Japan)
 141                 732  =16*45.75  M/N STD
 142                 704  =16*44     ATSC (at DVB code)
 143                 632  =16*39.50  I U.K.
 144                 622.4=16*38.90  B/G D/K I, L STD
 145                 592  =16*37.00  D China
 146                 590  =16.36.875 B Australia
 147                 543.2=16*33.95  L' STD
 148                 171.2=16*10.70  FM Radio (at set_radio_freq)
 149         */
 150
 151         if (t->std == V4L2_STD_NTSC_M_JP) {
 152                 IFPCoff      = 940;
 153                 desired_type = TUNER_PARAM_TYPE_NTSC;
 154         } else if ((t->std & V4L2_STD_MN) &&
 155                   !(t->std & ~V4L2_STD_MN)) {
 156                 IFPCoff      = 732;
 157                 desired_type = TUNER_PARAM_TYPE_NTSC;
 158         } else if (t->std == V4L2_STD_SECAM_LC) {
 159                 IFPCoff      = 543;
 160                 desired_type = TUNER_PARAM_TYPE_SECAM;
 161         } else {
 162                 IFPCoff      = 623;
 163                 desired_type = TUNER_PARAM_TYPE_PAL;
 164         }
 165
 166         for (j = 0; j < tun->count-1; j++) {
 167                 if (desired_type != tun->params[j].type)
 168                         continue;
 169                 break;
 170         }
 171         /* use default tuner_params if desired_type not available */
 172         if (desired_type != tun->params[j].type) {
 173                 tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
 174                           IFPCoff,t->type);
 175                 j = 0;
 176         }
 177         params = &tun->params[j];
 178
 179         for (i = 0; i < params->count; i++) {
 180                 if (freq > params->ranges[i].limit)
 181                         continue;
 182                 break;
 183         }
 184         if (i == params->count) {
 185                 tuner_dbg("TV frequency out of range (%d > %d)",
 186                                 freq, params->ranges[i - 1].limit);
 187                 freq = params->ranges[--i].limit;
 188         }
 189         config = params->ranges[i].config;
 190         cb     = params->ranges[i].cb;
 191         /*  i == 0 -> VHF_LO
 192          *  i == 1 -> VHF_HI
 193          *  i == 2 -> UHF     */
 194         tuner_dbg("tv: param %d, range %d\n",j,i);
 195
 196         div=freq + IFPCoff + offset;
 197
 198         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
 199                                         freq / 16, freq % 16 * 100 / 16,
 200                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
 201                                         offset / 16, offset % 16 * 100 / 16,
 202                                         div);
 203
 204         /* tv norm specific stuff for multi-norm tuners */
 205         switch (t->type) {
 206         case TUNER_PHILIPS_SECAM: // FI1216MF
 207                 /* 0x01 -> ??? no change ??? */
 208                 /* 0x02 -> PAL BDGHI / SECAM L */
 209                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 210                 cb &= ~0x03;
 211                 if (t->std & V4L2_STD_SECAM_L) //also valid for V4L2_STD_SECAM
 212                         cb |= PHILIPS_MF_SET_STD_L;
 213                 else if (t->std & V4L2_STD_SECAM_LC)
 214                         cb |= PHILIPS_MF_SET_STD_LC;
 215                 else /* V4L2_STD_B|V4L2_STD_GH */
 216                         cb |= PHILIPS_MF_SET_STD_BG;
 217                 break;
 218
 219         case TUNER_TEMIC_4046FM5:
 220                 cb &= ~0x0f;
 221
 222                 if (t->std & V4L2_STD_PAL_BG) {
 223                         cb |= TEMIC_SET_PAL_BG;
 224
 225                 } else if (t->std & V4L2_STD_PAL_I) {
 226                         cb |= TEMIC_SET_PAL_I;
 227
 228                 } else if (t->std & V4L2_STD_PAL_DK) {
 229                         cb |= TEMIC_SET_PAL_DK;
 230
 231                 } else if (t->std & V4L2_STD_SECAM_L) {
 232                         cb |= TEMIC_SET_PAL_L;
 233
 234                 }
 235                 break;
 236
 237         case TUNER_PHILIPS_FQ1216ME:
 238                 cb &= ~0x0f;
 239
 240                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 241                         cb |= PHILIPS_SET_PAL_BGDK;
 242
 243                 } else if (t->std & V4L2_STD_PAL_I) {
 244                         cb |= PHILIPS_SET_PAL_I;
 245
 246                 } else if (t->std & V4L2_STD_SECAM_L) {
 247                         cb |= PHILIPS_SET_PAL_L;
 248
 249                 }
 250                 break;
 251
 252         case TUNER_PHILIPS_ATSC:
 253                 /* 0x00 -> ATSC antenna input 1 */
 254                 /* 0x01 -> ATSC antenna input 2 */
 255                 /* 0x02 -> NTSC antenna input 1 */
 256                 /* 0x03 -> NTSC antenna input 2 */
 257                 cb &= ~0x03;
 258                 if (!(t->std & V4L2_STD_ATSC))
 259                         cb |= 2;
 260                 /* FIXME: input */
 261                 break;
 262
 263         case TUNER_MICROTUNE_4042FI5:
 264                 /* Set the charge pump for fast tuning */
 265                 config |= TUNER_CHARGE_PUMP;
 266                 break;
 267
 268         case TUNER_PHILIPS_TUV1236D:
 269                 /* 0x40 -> ATSC antenna input 1 */
 270                 /* 0x48 -> ATSC antenna input 2 */
 271                 /* 0x00 -> NTSC antenna input 1 */
 272                 /* 0x08 -> NTSC antenna input 2 */
 273                 buffer[0] = 0x14;
 274                 buffer[1] = 0x00;
 275                 buffer[2] = 0x17;
 276                 buffer[3] = 0x00;
 277                 cb &= ~0x40;
 278                 if (t->std & V4L2_STD_ATSC) {
 279                         cb |= 0x40;
 280                         buffer[1] = 0x04;
 281                 }
 282                 /* set to the correct mode (analog or digital) */
 283                 tuneraddr = c->addr;
 284                 c->addr = 0x0a;
 285                 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
 286                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 287                 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
 288                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 289                 c->addr = tuneraddr;
 290                 /* FIXME: input */
 291                 break;
 292         }
 293
 294         if (params->cb_first_if_lower_freq && div < t->last_div) {
 295                 buffer[0] = config;
 296                 buffer[1] = cb;
 297                 buffer[2] = (div>>8) & 0x7f;
 298                 buffer[3] = div      & 0xff;
 299         } else {
 300                 buffer[0] = (div>>8) & 0x7f;
 301                 buffer[1] = div      & 0xff;
 302                 buffer[2] = config;
 303                 buffer[3] = cb;
 304         }
 305         t->last_div = div;
 306         if (params->has_tda9887) {
 307                 int config = 0;
 308                 int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
 309                         !(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
 310
 311                 if (t->std == V4L2_STD_SECAM_LC) {
 312                         if (params->port1_active ^ params->port1_invert_for_secam_lc)
 313                                 config |= TDA9887_PORT1_ACTIVE;
 314                         if (params->port2_active ^ params->port2_invert_for_secam_lc)
 315                                 config |= TDA9887_PORT2_ACTIVE;
 316                 }
 317                 else {
 318                         if (params->port1_active)
 319                                 config |= TDA9887_PORT1_ACTIVE;
 320                         if (params->port2_active)
 321                                 config |= TDA9887_PORT2_ACTIVE;
 322                 }
 323                 if (params->intercarrier_mode)
 324                         config |= TDA9887_INTERCARRIER;
 325                 if (is_secam_l) {
 326                         if (i == 0 && params->default_top_secam_low)
 327                                 config |= TDA9887_TOP(params->default_top_secam_low);
 328                         else if (i == 1 && params->default_top_secam_mid)
 329                                 config |= TDA9887_TOP(params->default_top_secam_mid);
 330                         else if (params->default_top_secam_high)
 331                                 config |= TDA9887_TOP(params->default_top_secam_high);
 332                 }
 333                 else {
 334                         if (i == 0 && params->default_top_low)
 335                                 config |= TDA9887_TOP(params->default_top_low);
 336                         else if (i == 1 && params->default_top_mid)
 337                                 config |= TDA9887_TOP(params->default_top_mid);
 338                         else if (params->default_top_high)
 339                                 config |= TDA9887_TOP(params->default_top_high);
 340                 }
 341                 if (params->default_pll_gating_18)
 342                         config |= TDA9887_GATING_18;
 343                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 344         }
 345         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 346                   buffer[0],buffer[1],buffer[2],buffer[3]);
 347
 348         if (4 != (rc = i2c_master_send(c,buffer,4)))
 349                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 350
 351         switch (t->type) {
 352         case TUNER_LG_TDVS_H06XF:
 353                 /* Set the Auxiliary Byte. */
 354                 buffer[0] = buffer[2];
 355                 buffer[0] &= ~0x20;
 356                 buffer[0] |= 0x18;
 357                 buffer[1] = 0x20;
 358                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
 359
 360                 if (2 != (rc = i2c_master_send(c,buffer,2)))
 361                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
 362                 break;
 363         case TUNER_MICROTUNE_4042FI5:
 364         {
 365                 // FIXME - this may also work for other tuners
 366                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 367                 u8 status_byte = 0;
 368
 369                 /* Wait until the PLL locks */
 370                 for (;;) {
 371                         if (time_after(jiffies,timeout))
 372                                 return;
 373                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
 374                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
 375                                 break;
 376                         }
 377                         if (status_byte & TUNER_PLL_LOCKED)
 378                                 break;
 379                         udelay(10);
 380                 }
 381
 382                 /* Set the charge pump for optimized phase noise figure */
 383                 config &= ~TUNER_CHARGE_PUMP;
 384                 buffer[0] = (div>>8) & 0x7f;
 385                 buffer[1] = div      & 0xff;
 386                 buffer[2] = config;
 387                 buffer[3] = cb;
 388                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 389                           buffer[0],buffer[1],buffer[2],buffer[3]);
 390
 391                 if (4 != (rc = i2c_master_send(c,buffer,4)))
 392                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 393                 break;
 394         }
 395         }
 396 }
 397
 398 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
 399 {
 400         struct tunertype *tun;
 401         struct tuner *t = i2c_get_clientdata(c);
 402         u8 buffer[4];
 403         u16 div;
 404         int rc, j;
 405         enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
 406         struct tuner_params *params;
 407
 408         tun = &tuners[t->type];
 409
 410         for (j = 0; j < tun->count-1; j++) {
 411                 if (desired_type != tun->params[j].type)
 412                         continue;
 413                 break;
 414         }
 415         /* use default tuner_params if desired_type not available */
 416         if (desired_type != tun->params[j].type)
 417                 j = 0;
 418
 419         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
 420         params = &tun->params[j];
 421         buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
 422
 423         switch (t->type) {
 424         case TUNER_TENA_9533_DI:
 425         case TUNER_YMEC_TVF_5533MF:
 426                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
 427                 return;
 428         case TUNER_PHILIPS_FM1216ME_MK3:
 429         case TUNER_PHILIPS_FM1236_MK3:
 430         case TUNER_PHILIPS_FMD1216ME_MK3:
 431         case TUNER_LG_NTSC_TAPE:
 432                 buffer[3] = 0x19;
 433                 break;
 434         case TUNER_TNF_5335MF:
 435                 buffer[3] = 0x11;
 436                 break;
 437         case TUNER_PHILIPS_FM1256_IH3:
 438                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
 439                 buffer[3] = 0x19;
 440                 break;
 441         case TUNER_LG_PAL_FM:
 442                 buffer[3] = 0xa5;
 443                 break;
 444         case TUNER_MICROTUNE_4049FM5:
 445                 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
 446                 buffer[3] = 0xa4;
 447                 break;
 448         default:
 449                 buffer[3] = 0xa4;
 450                 break;
 451         }
 452         if (params->cb_first_if_lower_freq && div < t->last_div) {
 453                 buffer[0] = buffer[2];
 454                 buffer[1] = buffer[3];
 455                 buffer[2] = (div>>8) & 0x7f;
 456                 buffer[3] = div      & 0xff;
 457         } else {
 458                 buffer[0] = (div>>8) & 0x7f;
 459                 buffer[1] = div      & 0xff;
 460         }
 461
 462         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 463                buffer[0],buffer[1],buffer[2],buffer[3]);
 464         t->last_div = div;
 465
 466         if (params->has_tda9887) {
 467                 int config = 0;
 468                 if (params->port1_active && !params->port1_fm_high_sensitivity)
 469                         config |= TDA9887_PORT1_ACTIVE;
 470                 if (params->port2_active && !params->port2_fm_high_sensitivity)
 471                         config |= TDA9887_PORT2_ACTIVE;
 472                 if (params->intercarrier_mode)
 473                         config |= TDA9887_INTERCARRIER;
 474 /*              if (params->port1_set_for_fm_mono)
 475                         config &= ~TDA9887_PORT1_ACTIVE;*/
 476                 if (params->fm_gain_normal)
 477                         config |= TDA9887_GAIN_NORMAL;
 478                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 479         }
 480         if (4 != (rc = i2c_master_send(c,buffer,4)))
 481                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
 482 }
 483
 484 static struct tuner_operations simple_tuner_ops = {
 485         .set_tv_freq    = default_set_tv_freq,
 486         .set_radio_freq = default_set_radio_freq,
 487         .has_signal     = tuner_signal,
 488         .is_stereo      = tuner_stereo,
 489 };
 490
 491 int default_tuner_init(struct i2c_client *c)
 492 {
 493         struct tuner *t = i2c_get_clientdata(c);
 494
 495         tuner_info("type set to %d (%s)\n",
 496                    t->type, tuners[t->type].name);
 497         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
 498
 499         memcpy(&t->ops, &simple_tuner_ops, sizeof(struct tuner_operations));
 500
 501         return 0;
 502 }
 503
 504 /*
 505  * Overrides for Emacs so that we follow Linus's tabbing style.
 506  * ---------------------------------------------------------------------------
 507  * Local variables:
 508  * c-basic-offset: 8
 509  * End:
 510  */