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