git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/tuner-simple.c

   1 /*
   2  * i2c tv tuner chip device driver
   3  * controls all those simple 4-control-bytes style tuners.
   4  *
   5  * This "tuner-simple" module was split apart from the original "tuner" module.
   6  */
   7 #include <linux/delay.h>
   8 #include <linux/i2c.h>
   9 #include <linux/videodev.h>
  10 #include <media/tuner.h>
  11 #include <media/v4l2-common.h>
  12 #include <media/tuner-types.h>
  13 #include "tuner-i2c.h"
  14 #include "tuner-simple.h"
  15
  16 static int debug;
  17 module_param(debug, int, 0644);
  18 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  19
  20 static int offset;
  21 module_param(offset, int, 0664);
  22 MODULE_PARM_DESC(offset, "Allows to specify an offset for tuner");
  23
  24 /* ---------------------------------------------------------------------- */
  25
  26 /* tv standard selection for Temic 4046 FM5
  27    this value takes the low bits of control byte 2
  28    from datasheet Rev.01, Feb.00
  29      standard     BG      I       L       L2      D
  30      picture IF   38.9    38.9    38.9    33.95   38.9
  31      sound 1      33.4    32.9    32.4    40.45   32.4
  32      sound 2      33.16
  33      NICAM        33.05   32.348  33.05           33.05
  34  */
  35 #define TEMIC_SET_PAL_I         0x05
  36 #define TEMIC_SET_PAL_DK        0x09
  37 #define TEMIC_SET_PAL_L         0x0a /* SECAM ? */
  38 #define TEMIC_SET_PAL_L2        0x0b /* change IF ! */
  39 #define TEMIC_SET_PAL_BG        0x0c
  40
  41 /* tv tuner system standard selection for Philips FQ1216ME
  42    this value takes the low bits of control byte 2
  43    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
  44      standard           BG      DK      I       L       L`
  45      picture carrier    38.90   38.90   38.90   38.90   33.95
  46      colour             34.47   34.47   34.47   34.47   38.38
  47      sound 1            33.40   32.40   32.90   32.40   40.45
  48      sound 2            33.16   -       -       -       -
  49      NICAM              33.05   33.05   32.35   33.05   39.80
  50  */
  51 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
  52 #define PHILIPS_SET_PAL_BGDK    0x09
  53 #define PHILIPS_SET_PAL_L2      0x0a
  54 #define PHILIPS_SET_PAL_L       0x0b
  55
  56 /* system switching for Philips FI1216MF MK2
  57    from datasheet "1996 Jul 09",
  58     standard         BG     L      L'
  59     picture carrier  38.90  38.90  33.95
  60     colour           34.47  34.37  38.38
  61     sound 1          33.40  32.40  40.45
  62     sound 2          33.16  -      -
  63     NICAM            33.05  33.05  39.80
  64  */
  65 #define PHILIPS_MF_SET_STD_BG   0x01 /* Bit 2 must be zero, Bit 3 is system output */
  66 #define PHILIPS_MF_SET_STD_L    0x03 /* Used on Secam France */
  67 #define PHILIPS_MF_SET_STD_LC   0x02 /* Used on SECAM L' */
  68
  69 /* Control byte */
  70
  71 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
  72 #define TUNER_RATIO_SELECT_50   0x00
  73 #define TUNER_RATIO_SELECT_32   0x02
  74 #define TUNER_RATIO_SELECT_166  0x04
  75 #define TUNER_RATIO_SELECT_62   0x06
  76
  77 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
  78
  79 /* Status byte */
  80
  81 #define TUNER_POR         0x80
  82 #define TUNER_FL          0x40
  83 #define TUNER_MODE        0x38
  84 #define TUNER_AFC         0x07
  85 #define TUNER_SIGNAL      0x07
  86 #define TUNER_STEREO      0x10
  87
  88 #define TUNER_PLL_LOCKED   0x40
  89 #define TUNER_STEREO_MK3   0x04
  90
  91 struct tuner_simple_priv {
  92         u16 last_div;
  93         struct tuner_i2c_props i2c_props;
  94
  95         unsigned int type;
  96         struct tunertype *tun;
  97
  98         u32 frequency;
  99 };
 100
 101 /* ---------------------------------------------------------------------- */
 102
 103 static int tuner_read_status(struct dvb_frontend *fe)
 104 {
 105         struct tuner_simple_priv *priv = fe->tuner_priv;
 106         unsigned char byte;
 107
 108         if (1 != tuner_i2c_xfer_recv(&priv->i2c_props, &byte, 1))
 109                 return 0;
 110
 111         return byte;
 112 }
 113
 114 static inline int tuner_signal(const int status)
 115 {
 116         return (status & TUNER_SIGNAL) << 13;
 117 }
 118
 119 static inline int tuner_stereo(const int type, const int status)
 120 {
 121         switch (type) {
 122         case TUNER_PHILIPS_FM1216ME_MK3:
 123         case TUNER_PHILIPS_FM1236_MK3:
 124         case TUNER_PHILIPS_FM1256_IH3:
 125         case TUNER_LG_NTSC_TAPE:
 126                 return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
 127         default:
 128                 return status & TUNER_STEREO;
 129         }
 130 }
 131
 132 static inline int tuner_islocked(const int status)
 133 {
 134         return (status & TUNER_FL);
 135 }
 136
 137 static inline int tuner_afcstatus(const int status)
 138 {
 139         return (status & TUNER_AFC) - 2;
 140 }
 141
 142
 143 static int simple_get_status(struct dvb_frontend *fe, u32 *status)
 144 {
 145         struct tuner_simple_priv *priv = fe->tuner_priv;
 146         int tuner_status = tuner_read_status(fe);
 147
 148         *status = 0;
 149
 150         if (tuner_islocked(tuner_status))
 151                 *status = TUNER_STATUS_LOCKED;
 152         if (tuner_stereo(priv->type, tuner_status))
 153                 *status |= TUNER_STATUS_STEREO;
 154
 155         tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));
 156
 157         return 0;
 158 }
 159
 160 static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
 161 {
 162         struct tuner_simple_priv *priv = fe->tuner_priv;
 163         int signal = tuner_signal(tuner_read_status(fe));
 164
 165         *strength = signal;
 166
 167         tuner_dbg("Signal strength: %d\n", signal);
 168
 169         return 0;
 170 }
 171
 172 /* ---------------------------------------------------------------------- */
 173
 174 static inline char *tuner_param_name(enum param_type type)
 175 {
 176         char *name;
 177
 178         switch (type) {
 179         case TUNER_PARAM_TYPE_RADIO:
 180                 name = "radio";
 181                 break;
 182         case TUNER_PARAM_TYPE_PAL:
 183                 name = "pal";
 184                 break;
 185         case TUNER_PARAM_TYPE_SECAM:
 186                 name = "secam";
 187                 break;
 188         case TUNER_PARAM_TYPE_NTSC:
 189                 name = "ntsc";
 190                 break;
 191         default:
 192                 name = "unknown";
 193                 break;
 194         }
 195         return name;
 196 }
 197
 198 static struct tuner_params *simple_tuner_params(struct dvb_frontend *fe,
 199                                                 enum param_type desired_type)
 200 {
 201         struct tuner_simple_priv *priv = fe->tuner_priv;
 202         struct tunertype *tun = priv->tun;
 203         int i;
 204
 205         for (i = 0; i < tun->count; i++)
 206                 if (desired_type == tun->params[i].type)
 207                         break;
 208
 209         /* use default tuner params if desired_type not available */
 210         if (i == tun->count) {
 211                 tuner_dbg("desired params (%s) undefined for tuner %d\n",
 212                           tuner_param_name(desired_type), priv->type);
 213                 i = 0;
 214         }
 215
 216         tuner_dbg("using tuner params #%d (%s)\n", i,
 217                   tuner_param_name(tun->params[i].type));
 218
 219         return &tun->params[i];
 220 }
 221
 222 static int simple_config_lookup(struct dvb_frontend *fe,
 223                                 struct tuner_params *t_params,
 224                                 int *frequency, u8 *config, u8 *cb)
 225 {
 226         struct tuner_simple_priv *priv = fe->tuner_priv;
 227         int i;
 228
 229         for (i = 0; i < t_params->count; i++) {
 230                 if (*frequency > t_params->ranges[i].limit)
 231                         continue;
 232                 break;
 233         }
 234         if (i == t_params->count) {
 235                 tuner_dbg("frequency out of range (%d > %d)\n",
 236                           *frequency, t_params->ranges[i - 1].limit);
 237                 *frequency = t_params->ranges[--i].limit;
 238         }
 239         *config = t_params->ranges[i].config;
 240         *cb     = t_params->ranges[i].cb;
 241
 242         tuner_dbg("freq = %d.%02d (%d), range = %d, "
 243                   "config = 0x%02x, cb = 0x%02x\n",
 244                   *frequency / 16, *frequency % 16 * 100 / 16, *frequency,
 245                   i, *config, *cb);
 246
 247         return i;
 248 }
 249
 250 /* ---------------------------------------------------------------------- */
 251
 252 static int simple_std_setup(struct dvb_frontend *fe,
 253                             struct analog_parameters *params,
 254                             u8 *config, u8 *cb)
 255 {
 256         struct tuner_simple_priv *priv = fe->tuner_priv;
 257         u8 tuneraddr;
 258         int rc;
 259
 260         /* tv norm specific stuff for multi-norm tuners */
 261         switch (priv->type) {
 262         case TUNER_PHILIPS_SECAM: /* FI1216MF */
 263                 /* 0x01 -> ??? no change ??? */
 264                 /* 0x02 -> PAL BDGHI / SECAM L */
 265                 /* 0x04 -> ??? PAL others / SECAM others ??? */
 266                 *cb &= ~0x03;
 267                 if (params->std & V4L2_STD_SECAM_L)
 268                         /* also valid for V4L2_STD_SECAM */
 269                         *cb |= PHILIPS_MF_SET_STD_L;
 270                 else if (params->std & V4L2_STD_SECAM_LC)
 271                         *cb |= PHILIPS_MF_SET_STD_LC;
 272                 else /* V4L2_STD_B|V4L2_STD_GH */
 273                         *cb |= PHILIPS_MF_SET_STD_BG;
 274                 break;
 275
 276         case TUNER_TEMIC_4046FM5:
 277                 *cb &= ~0x0f;
 278
 279                 if (params->std & V4L2_STD_PAL_BG) {
 280                         *cb |= TEMIC_SET_PAL_BG;
 281
 282                 } else if (params->std & V4L2_STD_PAL_I) {
 283                         *cb |= TEMIC_SET_PAL_I;
 284
 285                 } else if (params->std & V4L2_STD_PAL_DK) {
 286                         *cb |= TEMIC_SET_PAL_DK;
 287
 288                 } else if (params->std & V4L2_STD_SECAM_L) {
 289                         *cb |= TEMIC_SET_PAL_L;
 290
 291                 }
 292                 break;
 293
 294         case TUNER_PHILIPS_FQ1216ME:
 295                 *cb &= ~0x0f;
 296
 297                 if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
 298                         *cb |= PHILIPS_SET_PAL_BGDK;
 299
 300                 } else if (params->std & V4L2_STD_PAL_I) {
 301                         *cb |= PHILIPS_SET_PAL_I;
 302
 303                 } else if (params->std & V4L2_STD_SECAM_L) {
 304                         *cb |= PHILIPS_SET_PAL_L;
 305
 306                 }
 307                 break;
 308
 309         case TUNER_PHILIPS_ATSC:
 310                 /* 0x00 -> ATSC antenna input 1 */
 311                 /* 0x01 -> ATSC antenna input 2 */
 312                 /* 0x02 -> NTSC antenna input 1 */
 313                 /* 0x03 -> NTSC antenna input 2 */
 314                 *cb &= ~0x03;
 315                 if (!(params->std & V4L2_STD_ATSC))
 316                         *cb |= 2;
 317                 /* FIXME: input */
 318                 break;
 319
 320         case TUNER_MICROTUNE_4042FI5:
 321                 /* Set the charge pump for fast tuning */
 322                 *config |= TUNER_CHARGE_PUMP;
 323                 break;
 324
 325         case TUNER_PHILIPS_TUV1236D:
 326         {
 327                 /* 0x40 -> ATSC antenna input 1 */
 328                 /* 0x48 -> ATSC antenna input 2 */
 329                 /* 0x00 -> NTSC antenna input 1 */
 330                 /* 0x08 -> NTSC antenna input 2 */
 331                 u8 buffer[4] = { 0x14, 0x00, 0x17, 0x00};
 332                 *cb &= ~0x40;
 333                 if (params->std & V4L2_STD_ATSC) {
 334                         *cb |= 0x40;
 335                         buffer[1] = 0x04;
 336                 }
 337                 /* set to the correct mode (analog or digital) */
 338                 tuneraddr = priv->i2c_props.addr;
 339                 priv->i2c_props.addr = 0x0a;
 340                 rc = tuner_i2c_xfer_send(&priv->i2c_props, &buffer[0], 2);
 341                 if (2 != rc)
 342                         tuner_warn("i2c i/o error: rc == %d "
 343                                    "(should be 2)\n", rc);
 344                 rc = tuner_i2c_xfer_send(&priv->i2c_props, &buffer[2], 2);
 345                 if (2 != rc)
 346                         tuner_warn("i2c i/o error: rc == %d "
 347                                    "(should be 2)\n", rc);
 348                 priv->i2c_props.addr = tuneraddr;
 349                 /* FIXME: input */
 350                 break;
 351         }
 352         }
 353
 354         return 0;
 355 }
 356
 357 static int simple_post_tune(struct dvb_frontend *fe, u8 *buffer,
 358                             u16 div, u8 config, u8 cb)
 359 {
 360         struct tuner_simple_priv *priv = fe->tuner_priv;
 361         int rc;
 362
 363         switch (priv->type) {
 364         case TUNER_LG_TDVS_H06XF:
 365                 /* Set the Auxiliary Byte. */
 366                 buffer[0] = buffer[2];
 367                 buffer[0] &= ~0x20;
 368                 buffer[0] |= 0x18;
 369                 buffer[1] = 0x20;
 370                 tuner_dbg("tv 0x%02x 0x%02x\n", buffer[0], buffer[1]);
 371
 372                 rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 2);
 373                 if (2 != rc)
 374                         tuner_warn("i2c i/o error: rc == %d "
 375                                    "(should be 2)\n", rc);
 376                 break;
 377         case TUNER_MICROTUNE_4042FI5:
 378         {
 379                 /* FIXME - this may also work for other tuners */
 380                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
 381                 u8 status_byte = 0;
 382
 383                 /* Wait until the PLL locks */
 384                 for (;;) {
 385                         if (time_after(jiffies, timeout))
 386                                 return 0;
 387                         rc = tuner_i2c_xfer_recv(&priv->i2c_props,
 388                                                  &status_byte, 1);
 389                         if (1 != rc) {
 390                                 tuner_warn("i2c i/o read error: rc == %d "
 391                                            "(should be 1)\n", rc);
 392                                 break;
 393                         }
 394                         if (status_byte & TUNER_PLL_LOCKED)
 395                                 break;
 396                         udelay(10);
 397                 }
 398
 399                 /* Set the charge pump for optimized phase noise figure */
 400                 config &= ~TUNER_CHARGE_PUMP;
 401                 buffer[0] = (div>>8) & 0x7f;
 402                 buffer[1] = div      & 0xff;
 403                 buffer[2] = config;
 404                 buffer[3] = cb;
 405                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 406                           buffer[0], buffer[1], buffer[2], buffer[3]);
 407
 408                 rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
 409                 if (4 != rc)
 410                         tuner_warn("i2c i/o error: rc == %d "
 411                                    "(should be 4)\n", rc);
 412                 break;
 413         }
 414         }
 415
 416         return 0;
 417 }
 418
 419 static int simple_radio_bandswitch(struct dvb_frontend *fe, u8 *buffer)
 420 {
 421         struct tuner_simple_priv *priv = fe->tuner_priv;
 422
 423         switch (priv->type) {
 424         case TUNER_TENA_9533_DI:
 425         case TUNER_YMEC_TVF_5533MF:
 426                 tuner_dbg("This tuner doesn't have FM. "
 427                           "Most cards have a TEA5767 for FM\n");
 428                 return 0;
 429         case TUNER_PHILIPS_FM1216ME_MK3:
 430         case TUNER_PHILIPS_FM1236_MK3:
 431         case TUNER_PHILIPS_FMD1216ME_MK3:
 432         case TUNER_LG_NTSC_TAPE:
 433         case TUNER_PHILIPS_FM1256_IH3:
 434                 buffer[3] = 0x19;
 435                 break;
 436         case TUNER_TNF_5335MF:
 437                 buffer[3] = 0x11;
 438                 break;
 439         case TUNER_LG_PAL_FM:
 440                 buffer[3] = 0xa5;
 441                 break;
 442         case TUNER_THOMSON_DTT761X:
 443                 buffer[3] = 0x39;
 444                 break;
 445         case TUNER_MICROTUNE_4049FM5:
 446         default:
 447                 buffer[3] = 0xa4;
 448                 break;
 449         }
 450
 451         return 0;
 452 }
 453
 454 /* ---------------------------------------------------------------------- */
 455
 456 static int simple_set_tv_freq(struct dvb_frontend *fe,
 457                               struct analog_parameters *params)
 458 {
 459         struct tuner_simple_priv *priv = fe->tuner_priv;
 460         u8 config, cb;
 461         u16 div;
 462         struct tunertype *tun;
 463         u8 buffer[4];
 464         int rc, IFPCoff, i;
 465         enum param_type desired_type;
 466         struct tuner_params *t_params;
 467
 468         tun = priv->tun;
 469
 470         /* IFPCoff = Video Intermediate Frequency - Vif:
 471                 940  =16*58.75  NTSC/J (Japan)
 472                 732  =16*45.75  M/N STD
 473                 704  =16*44     ATSC (at DVB code)
 474                 632  =16*39.50  I U.K.
 475                 622.4=16*38.90  B/G D/K I, L STD
 476                 592  =16*37.00  D China
 477                 590  =16.36.875 B Australia
 478                 543.2=16*33.95  L' STD
 479                 171.2=16*10.70  FM Radio (at set_radio_freq)
 480         */
 481
 482         if (params->std == V4L2_STD_NTSC_M_JP) {
 483                 IFPCoff      = 940;
 484                 desired_type = TUNER_PARAM_TYPE_NTSC;
 485         } else if ((params->std & V4L2_STD_MN) &&
 486                   !(params->std & ~V4L2_STD_MN)) {
 487                 IFPCoff      = 732;
 488                 desired_type = TUNER_PARAM_TYPE_NTSC;
 489         } else if (params->std == V4L2_STD_SECAM_LC) {
 490                 IFPCoff      = 543;
 491                 desired_type = TUNER_PARAM_TYPE_SECAM;
 492         } else {
 493                 IFPCoff      = 623;
 494                 desired_type = TUNER_PARAM_TYPE_PAL;
 495         }
 496
 497         t_params = simple_tuner_params(fe, desired_type);
 498
 499         i = simple_config_lookup(fe, t_params, &params->frequency,
 500                                  &config, &cb);
 501
 502         div = params->frequency + IFPCoff + offset;
 503
 504         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, "
 505                   "Offset=%d.%02d MHz, div=%0d\n",
 506                   params->frequency / 16, params->frequency % 16 * 100 / 16,
 507                   IFPCoff / 16, IFPCoff % 16 * 100 / 16,
 508                   offset / 16, offset % 16 * 100 / 16, div);
 509
 510         /* tv norm specific stuff for multi-norm tuners */
 511         simple_std_setup(fe, params, &config, &cb);
 512
 513         if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
 514                 buffer[0] = config;
 515                 buffer[1] = cb;
 516                 buffer[2] = (div>>8) & 0x7f;
 517                 buffer[3] = div      & 0xff;
 518         } else {
 519                 buffer[0] = (div>>8) & 0x7f;
 520                 buffer[1] = div      & 0xff;
 521                 buffer[2] = config;
 522                 buffer[3] = cb;
 523         }
 524         priv->last_div = div;
 525         if (t_params->has_tda9887) {
 526                 struct v4l2_priv_tun_config tda9887_cfg;
 527                 int config = 0;
 528                 int is_secam_l = (params->std & (V4L2_STD_SECAM_L |
 529                                                  V4L2_STD_SECAM_LC)) &&
 530                         !(params->std & ~(V4L2_STD_SECAM_L |
 531                                           V4L2_STD_SECAM_LC));
 532
 533                 tda9887_cfg.tuner = TUNER_TDA9887;
 534                 tda9887_cfg.priv  = &config;
 535
 536                 if (params->std == V4L2_STD_SECAM_LC) {
 537                         if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
 538                                 config |= TDA9887_PORT1_ACTIVE;
 539                         if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
 540                                 config |= TDA9887_PORT2_ACTIVE;
 541                 } else {
 542                         if (t_params->port1_active)
 543                                 config |= TDA9887_PORT1_ACTIVE;
 544                         if (t_params->port2_active)
 545                                 config |= TDA9887_PORT2_ACTIVE;
 546                 }
 547                 if (t_params->intercarrier_mode)
 548                         config |= TDA9887_INTERCARRIER;
 549                 if (is_secam_l) {
 550                         if (i == 0 && t_params->default_top_secam_low)
 551                                 config |= TDA9887_TOP(t_params->default_top_secam_low);
 552                         else if (i == 1 && t_params->default_top_secam_mid)
 553                                 config |= TDA9887_TOP(t_params->default_top_secam_mid);
 554                         else if (t_params->default_top_secam_high)
 555                                 config |= TDA9887_TOP(t_params->default_top_secam_high);
 556                 } else {
 557                         if (i == 0 && t_params->default_top_low)
 558                                 config |= TDA9887_TOP(t_params->default_top_low);
 559                         else if (i == 1 && t_params->default_top_mid)
 560                                 config |= TDA9887_TOP(t_params->default_top_mid);
 561                         else if (t_params->default_top_high)
 562                                 config |= TDA9887_TOP(t_params->default_top_high);
 563                 }
 564                 if (t_params->default_pll_gating_18)
 565                         config |= TDA9887_GATING_18;
 566                 i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
 567                                     &tda9887_cfg);
 568         }
 569         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
 570                   buffer[0], buffer[1], buffer[2], buffer[3]);
 571
 572         rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
 573         if (4 != rc)
 574                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
 575
 576         simple_post_tune(fe, &buffer[0], div, config, cb);
 577
 578         return 0;
 579 }
 580
 581 static int simple_set_radio_freq(struct dvb_frontend *fe,
 582                                  struct analog_parameters *params)
 583 {
 584         struct tunertype *tun;
 585         struct tuner_simple_priv *priv = fe->tuner_priv;
 586         u8 buffer[4];
 587         u16 div;
 588         int rc, j;
 589         struct tuner_params *t_params;
 590         unsigned int freq = params->frequency;
 591
 592         tun = priv->tun;
 593
 594         for (j = tun->count-1; j > 0; j--)
 595                 if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
 596                         break;
 597         /* default t_params (j=0) will be used if desired type wasn't found */
 598         t_params = &tun->params[j];
 599
 600         /* Select Radio 1st IF used */
 601         switch (t_params->radio_if) {
 602         case 0: /* 10.7 MHz */
 603                 freq += (unsigned int)(10.7*16000);
 604                 break;
 605         case 1: /* 33.3 MHz */
 606                 freq += (unsigned int)(33.3*16000);
 607                 break;
 608         case 2: /* 41.3 MHz */
 609                 freq += (unsigned int)(41.3*16000);
 610                 break;
 611         default:
 612                 tuner_warn("Unsupported radio_if value %d\n",
 613                            t_params->radio_if);
 614                 return 0;
 615         }
 616
 617         /* Bandswitch byte */
 618         simple_radio_bandswitch(fe, &buffer[0]);
 619
 620         buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
 621                     TUNER_RATIO_SELECT_50; /* 50 kHz step */
 622
 623         /* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
 624            freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
 625            freq * (1/800) */
 626         div = (freq + 400) / 800;
 627
 628         if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
 629                 buffer[0] = buffer[2];
 630                 buffer[1] = buffer[3];
 631                 buffer[2] = (div>>8) & 0x7f;
 632                 buffer[3] = div      & 0xff;
 633         } else {
 634                 buffer[0] = (div>>8) & 0x7f;
 635                 buffer[1] = div      & 0xff;
 636         }
 637
 638         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
 639                buffer[0], buffer[1], buffer[2], buffer[3]);
 640         priv->last_div = div;
 641
 642         if (t_params->has_tda9887) {
 643                 int config = 0;
 644                 struct v4l2_priv_tun_config tda9887_cfg;
 645
 646                 tda9887_cfg.tuner = TUNER_TDA9887;
 647                 tda9887_cfg.priv = &config;
 648
 649                 if (t_params->port1_active &&
 650                     !t_params->port1_fm_high_sensitivity)
 651                         config |= TDA9887_PORT1_ACTIVE;
 652                 if (t_params->port2_active &&
 653                     !t_params->port2_fm_high_sensitivity)
 654                         config |= TDA9887_PORT2_ACTIVE;
 655                 if (t_params->intercarrier_mode)
 656                         config |= TDA9887_INTERCARRIER;
 657 /*              if (t_params->port1_set_for_fm_mono)
 658                         config &= ~TDA9887_PORT1_ACTIVE;*/
 659                 if (t_params->fm_gain_normal)
 660                         config |= TDA9887_GAIN_NORMAL;
 661                 if (t_params->radio_if == 2)
 662                         config |= TDA9887_RIF_41_3;
 663                 i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
 664                                     &tda9887_cfg);
 665         }
 666         rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
 667         if (4 != rc)
 668                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
 669
 670         return 0;
 671 }
 672
 673 static int simple_set_params(struct dvb_frontend *fe,
 674                              struct analog_parameters *params)
 675 {
 676         struct tuner_simple_priv *priv = fe->tuner_priv;
 677         int ret = -EINVAL;
 678
 679         switch (params->mode) {
 680         case V4L2_TUNER_RADIO:
 681                 ret = simple_set_radio_freq(fe, params);
 682                 priv->frequency = params->frequency * 125 / 2;
 683                 break;
 684         case V4L2_TUNER_ANALOG_TV:
 685         case V4L2_TUNER_DIGITAL_TV:
 686                 ret = simple_set_tv_freq(fe, params);
 687                 priv->frequency = params->frequency * 62500;
 688                 break;
 689         }
 690
 691         return ret;
 692 }
 693
 694
 695 static int simple_release(struct dvb_frontend *fe)
 696 {
 697         kfree(fe->tuner_priv);
 698         fe->tuner_priv = NULL;
 699
 700         return 0;
 701 }
 702
 703 static int simple_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 704 {
 705         struct tuner_simple_priv *priv = fe->tuner_priv;
 706         *frequency = priv->frequency;
 707         return 0;
 708 }
 709
 710 static struct dvb_tuner_ops simple_tuner_ops = {
 711         .set_analog_params = simple_set_params,
 712         .release           = simple_release,
 713         .get_frequency     = simple_get_frequency,
 714         .get_status        = simple_get_status,
 715         .get_rf_strength   = simple_get_rf_strength,
 716 };
 717
 718 struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
 719                                          struct i2c_adapter *i2c_adap,
 720                                          u8 i2c_addr,
 721                                          unsigned int type)
 722 {
 723         struct tuner_simple_priv *priv = NULL;
 724
 725         if (type >= tuner_count) {
 726                 printk(KERN_WARNING "%s: invalid tuner type: %d (max: %d)\n",
 727                        __FUNCTION__, type, tuner_count-1);
 728                 return NULL;
 729         }
 730
 731         priv = kzalloc(sizeof(struct tuner_simple_priv), GFP_KERNEL);
 732         if (priv == NULL)
 733                 return NULL;
 734         fe->tuner_priv = priv;
 735
 736         priv->i2c_props.addr = i2c_addr;
 737         priv->i2c_props.adap = i2c_adap;
 738         priv->i2c_props.name = "tuner-simple";
 739
 740         priv->type = type;
 741         priv->tun  = &tuners[type];
 742
 743         memcpy(&fe->ops.tuner_ops, &simple_tuner_ops,
 744                sizeof(struct dvb_tuner_ops));
 745
 746         tuner_info("type set to %d (%s)\n", priv->type, priv->tun->name);
 747
 748         strlcpy(fe->ops.tuner_ops.info.name, priv->tun->name,
 749                 sizeof(fe->ops.tuner_ops.info.name));
 750
 751         return fe;
 752 }
 753 EXPORT_SYMBOL_GPL(simple_tuner_attach);
 754
 755 MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
 756 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
 757 MODULE_LICENSE("GPL");
 758
 759 /*
 760  * Overrides for Emacs so that we follow Linus's tabbing style.
 761  * ---------------------------------------------------------------------------
 762  * Local variables:
 763  * c-basic-offset: 8
 764  * End:
 765  */